1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52 * Number of sectors per IO command
53 * Will be set in megasas_init_mfi if user does not provide
54 */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58 "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102 "1 - iops: High iops queues are not allocated &\n\t\t"
103 "interrupt coalescing is enabled on all queues\n\t\t"
104 "2 - latency: High iops queues are not allocated &\n\t\t"
105 "interrupt coalescing is disabled on all queues\n\t\t"
106 "default mode is 'balanced'"
107 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int poll_queues;
118 module_param(poll_queues, int, 0444);
119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
120 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
121 "It is not applicable for MFI_SERIES. &\n\t\t"
122 "Driver will work in latency mode. &\n\t\t"
123 "High iops queues are not allocated &\n\t\t"
124 );
125
126 int host_tagset_enable = 1;
127 module_param(host_tagset_enable, int, 0444);
128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
129
130 MODULE_LICENSE("GPL");
131 MODULE_VERSION(MEGASAS_VERSION);
132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
134
135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
136 static int megasas_get_pd_list(struct megasas_instance *instance);
137 static int megasas_ld_list_query(struct megasas_instance *instance,
138 u8 query_type);
139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
140 static int megasas_register_aen(struct megasas_instance *instance,
141 u32 seq_num, u32 class_locale_word);
142 static void megasas_get_pd_info(struct megasas_instance *instance,
143 struct scsi_device *sdev);
144 static void
145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
146
147 /*
148 * PCI ID table for all supported controllers
149 */
150 static struct pci_device_id megasas_pci_table[] = {
151
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
155 /* ppc IOP */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
157 /* ppc IOP */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
159 /* gen2*/
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
161 /* gen2*/
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
163 /* skinny*/
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
165 /* skinny*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
167 /* xscale IOP, vega */
168 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
169 /* xscale IOP */
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
171 /* Fusion */
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
173 /* Plasma */
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
175 /* Invader */
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
177 /* Fury */
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
179 /* Intruder */
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
181 /* Intruder 24 port*/
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
184 /* VENTURA */
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
198 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
199 {}
200 };
201
202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
203
204 static int megasas_mgmt_majorno;
205 struct megasas_mgmt_info megasas_mgmt_info;
206 static struct fasync_struct *megasas_async_queue;
207 static DEFINE_MUTEX(megasas_async_queue_mutex);
208
209 static int megasas_poll_wait_aen;
210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
211 static u32 support_poll_for_event;
212 u32 megasas_dbg_lvl;
213 static u32 support_device_change;
214 static bool support_nvme_encapsulation;
215 static bool support_pci_lane_margining;
216
217 /* define lock for aen poll */
218 static DEFINE_SPINLOCK(poll_aen_lock);
219
220 extern struct dentry *megasas_debugfs_root;
221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
222
223 void
224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
225 u8 alt_status);
226 static u32
227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
228 static int
229 megasas_adp_reset_gen2(struct megasas_instance *instance,
230 struct megasas_register_set __iomem *reg_set);
231 static irqreturn_t megasas_isr(int irq, void *devp);
232 static u32
233 megasas_init_adapter_mfi(struct megasas_instance *instance);
234 u32
235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
236 struct scsi_cmnd *scmd);
237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
238 int
239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
240 int seconds);
241 void megasas_fusion_ocr_wq(struct work_struct *work);
242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
243 int initial);
244 static int
245 megasas_set_dma_mask(struct megasas_instance *instance);
246 static int
247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
248 static inline void
249 megasas_free_ctrl_mem(struct megasas_instance *instance);
250 static inline int
251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
252 static inline void
253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
254 static inline void
255 megasas_init_ctrl_params(struct megasas_instance *instance);
256
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)257 u32 megasas_readl(struct megasas_instance *instance,
258 const volatile void __iomem *addr)
259 {
260 u32 i = 0, ret_val;
261 /*
262 * Due to a HW errata in Aero controllers, reads to certain
263 * Fusion registers could intermittently return all zeroes.
264 * This behavior is transient in nature and subsequent reads will
265 * return valid value. As a workaround in driver, retry readl for
266 * up to thirty times until a non-zero value is read.
267 */
268 if (instance->adapter_type == AERO_SERIES) {
269 do {
270 ret_val = readl(addr);
271 i++;
272 } while (ret_val == 0 && i < 30);
273 return ret_val;
274 } else {
275 return readl(addr);
276 }
277 }
278
279 /**
280 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
281 * @instance: Adapter soft state
282 * @dcmd: DCMD frame inside MFI command
283 * @dma_addr: DMA address of buffer to be passed to FW
284 * @dma_len: Length of DMA buffer to be passed to FW
285 * @return: void
286 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)287 void megasas_set_dma_settings(struct megasas_instance *instance,
288 struct megasas_dcmd_frame *dcmd,
289 dma_addr_t dma_addr, u32 dma_len)
290 {
291 if (instance->consistent_mask_64bit) {
292 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
293 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
294 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
295
296 } else {
297 dcmd->sgl.sge32[0].phys_addr =
298 cpu_to_le32(lower_32_bits(dma_addr));
299 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
300 dcmd->flags = cpu_to_le16(dcmd->flags);
301 }
302 }
303
304 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
306 {
307 instance->instancet->fire_cmd(instance,
308 cmd->frame_phys_addr, 0, instance->reg_set);
309 return;
310 }
311
312 /**
313 * megasas_get_cmd - Get a command from the free pool
314 * @instance: Adapter soft state
315 *
316 * Returns a free command from the pool
317 */
megasas_get_cmd(struct megasas_instance * instance)318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
319 *instance)
320 {
321 unsigned long flags;
322 struct megasas_cmd *cmd = NULL;
323
324 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
325
326 if (!list_empty(&instance->cmd_pool)) {
327 cmd = list_entry((&instance->cmd_pool)->next,
328 struct megasas_cmd, list);
329 list_del_init(&cmd->list);
330 } else {
331 dev_err(&instance->pdev->dev, "Command pool empty!\n");
332 }
333
334 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
335 return cmd;
336 }
337
338 /**
339 * megasas_return_cmd - Return a cmd to free command pool
340 * @instance: Adapter soft state
341 * @cmd: Command packet to be returned to free command pool
342 */
343 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
345 {
346 unsigned long flags;
347 u32 blk_tags;
348 struct megasas_cmd_fusion *cmd_fusion;
349 struct fusion_context *fusion = instance->ctrl_context;
350
351 /* This flag is used only for fusion adapter.
352 * Wait for Interrupt for Polled mode DCMD
353 */
354 if (cmd->flags & DRV_DCMD_POLLED_MODE)
355 return;
356
357 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
358
359 if (fusion) {
360 blk_tags = instance->max_scsi_cmds + cmd->index;
361 cmd_fusion = fusion->cmd_list[blk_tags];
362 megasas_return_cmd_fusion(instance, cmd_fusion);
363 }
364 cmd->scmd = NULL;
365 cmd->frame_count = 0;
366 cmd->flags = 0;
367 memset(cmd->frame, 0, instance->mfi_frame_size);
368 cmd->frame->io.context = cpu_to_le32(cmd->index);
369 if (!fusion && reset_devices)
370 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
371 list_add(&cmd->list, (&instance->cmd_pool)->next);
372
373 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
374
375 }
376
377 static const char *
format_timestamp(uint32_t timestamp)378 format_timestamp(uint32_t timestamp)
379 {
380 static char buffer[32];
381
382 if ((timestamp & 0xff000000) == 0xff000000)
383 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
384 0x00ffffff);
385 else
386 snprintf(buffer, sizeof(buffer), "%us", timestamp);
387 return buffer;
388 }
389
390 static const char *
format_class(int8_t class)391 format_class(int8_t class)
392 {
393 static char buffer[6];
394
395 switch (class) {
396 case MFI_EVT_CLASS_DEBUG:
397 return "debug";
398 case MFI_EVT_CLASS_PROGRESS:
399 return "progress";
400 case MFI_EVT_CLASS_INFO:
401 return "info";
402 case MFI_EVT_CLASS_WARNING:
403 return "WARN";
404 case MFI_EVT_CLASS_CRITICAL:
405 return "CRIT";
406 case MFI_EVT_CLASS_FATAL:
407 return "FATAL";
408 case MFI_EVT_CLASS_DEAD:
409 return "DEAD";
410 default:
411 snprintf(buffer, sizeof(buffer), "%d", class);
412 return buffer;
413 }
414 }
415
416 /**
417 * megasas_decode_evt: Decode FW AEN event and print critical event
418 * for information.
419 * @instance: Adapter soft state
420 */
421 static void
megasas_decode_evt(struct megasas_instance * instance)422 megasas_decode_evt(struct megasas_instance *instance)
423 {
424 struct megasas_evt_detail *evt_detail = instance->evt_detail;
425 union megasas_evt_class_locale class_locale;
426 class_locale.word = le32_to_cpu(evt_detail->cl.word);
427
428 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
429 (event_log_level > MFI_EVT_CLASS_DEAD)) {
430 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
431 event_log_level = MFI_EVT_CLASS_CRITICAL;
432 }
433
434 if (class_locale.members.class >= event_log_level)
435 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
436 le32_to_cpu(evt_detail->seq_num),
437 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
438 (class_locale.members.locale),
439 format_class(class_locale.members.class),
440 evt_detail->description);
441
442 if (megasas_dbg_lvl & LD_PD_DEBUG)
443 dev_info(&instance->pdev->dev,
444 "evt_detail.args.ld.target_id/index %d/%d\n",
445 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
446
447 }
448
449 /*
450 * The following functions are defined for xscale
451 * (deviceid : 1064R, PERC5) controllers
452 */
453
454 /**
455 * megasas_enable_intr_xscale - Enables interrupts
456 * @instance: Adapter soft state
457 */
458 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)459 megasas_enable_intr_xscale(struct megasas_instance *instance)
460 {
461 struct megasas_register_set __iomem *regs;
462
463 regs = instance->reg_set;
464 writel(0, &(regs)->outbound_intr_mask);
465
466 /* Dummy readl to force pci flush */
467 readl(®s->outbound_intr_mask);
468 }
469
470 /**
471 * megasas_disable_intr_xscale -Disables interrupt
472 * @instance: Adapter soft state
473 */
474 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)475 megasas_disable_intr_xscale(struct megasas_instance *instance)
476 {
477 struct megasas_register_set __iomem *regs;
478 u32 mask = 0x1f;
479
480 regs = instance->reg_set;
481 writel(mask, ®s->outbound_intr_mask);
482 /* Dummy readl to force pci flush */
483 readl(®s->outbound_intr_mask);
484 }
485
486 /**
487 * megasas_read_fw_status_reg_xscale - returns the current FW status value
488 * @instance: Adapter soft state
489 */
490 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
492 {
493 return readl(&instance->reg_set->outbound_msg_0);
494 }
495 /**
496 * megasas_clear_intr_xscale - Check & clear interrupt
497 * @instance: Adapter soft state
498 */
499 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)500 megasas_clear_intr_xscale(struct megasas_instance *instance)
501 {
502 u32 status;
503 u32 mfiStatus = 0;
504 struct megasas_register_set __iomem *regs;
505 regs = instance->reg_set;
506
507 /*
508 * Check if it is our interrupt
509 */
510 status = readl(®s->outbound_intr_status);
511
512 if (status & MFI_OB_INTR_STATUS_MASK)
513 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
514 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
515 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
516
517 /*
518 * Clear the interrupt by writing back the same value
519 */
520 if (mfiStatus)
521 writel(status, ®s->outbound_intr_status);
522
523 /* Dummy readl to force pci flush */
524 readl(®s->outbound_intr_status);
525
526 return mfiStatus;
527 }
528
529 /**
530 * megasas_fire_cmd_xscale - Sends command to the FW
531 * @instance: Adapter soft state
532 * @frame_phys_addr : Physical address of cmd
533 * @frame_count : Number of frames for the command
534 * @regs : MFI register set
535 */
536 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
538 dma_addr_t frame_phys_addr,
539 u32 frame_count,
540 struct megasas_register_set __iomem *regs)
541 {
542 unsigned long flags;
543
544 spin_lock_irqsave(&instance->hba_lock, flags);
545 writel((frame_phys_addr >> 3)|(frame_count),
546 &(regs)->inbound_queue_port);
547 spin_unlock_irqrestore(&instance->hba_lock, flags);
548 }
549
550 /**
551 * megasas_adp_reset_xscale - For controller reset
552 * @instance: Adapter soft state
553 * @regs: MFI register set
554 */
555 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)556 megasas_adp_reset_xscale(struct megasas_instance *instance,
557 struct megasas_register_set __iomem *regs)
558 {
559 u32 i;
560 u32 pcidata;
561
562 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
563
564 for (i = 0; i < 3; i++)
565 msleep(1000); /* sleep for 3 secs */
566 pcidata = 0;
567 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
568 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
569 if (pcidata & 0x2) {
570 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
571 pcidata &= ~0x2;
572 pci_write_config_dword(instance->pdev,
573 MFI_1068_PCSR_OFFSET, pcidata);
574
575 for (i = 0; i < 2; i++)
576 msleep(1000); /* need to wait 2 secs again */
577
578 pcidata = 0;
579 pci_read_config_dword(instance->pdev,
580 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
581 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
582 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
583 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
584 pcidata = 0;
585 pci_write_config_dword(instance->pdev,
586 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
587 }
588 }
589 return 0;
590 }
591
592 /**
593 * megasas_check_reset_xscale - For controller reset check
594 * @instance: Adapter soft state
595 * @regs: MFI register set
596 */
597 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)598 megasas_check_reset_xscale(struct megasas_instance *instance,
599 struct megasas_register_set __iomem *regs)
600 {
601 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
602 (le32_to_cpu(*instance->consumer) ==
603 MEGASAS_ADPRESET_INPROG_SIGN))
604 return 1;
605 return 0;
606 }
607
608 static struct megasas_instance_template megasas_instance_template_xscale = {
609
610 .fire_cmd = megasas_fire_cmd_xscale,
611 .enable_intr = megasas_enable_intr_xscale,
612 .disable_intr = megasas_disable_intr_xscale,
613 .clear_intr = megasas_clear_intr_xscale,
614 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
615 .adp_reset = megasas_adp_reset_xscale,
616 .check_reset = megasas_check_reset_xscale,
617 .service_isr = megasas_isr,
618 .tasklet = megasas_complete_cmd_dpc,
619 .init_adapter = megasas_init_adapter_mfi,
620 .build_and_issue_cmd = megasas_build_and_issue_cmd,
621 .issue_dcmd = megasas_issue_dcmd,
622 };
623
624 /*
625 * This is the end of set of functions & definitions specific
626 * to xscale (deviceid : 1064R, PERC5) controllers
627 */
628
629 /*
630 * The following functions are defined for ppc (deviceid : 0x60)
631 * controllers
632 */
633
634 /**
635 * megasas_enable_intr_ppc - Enables interrupts
636 * @instance: Adapter soft state
637 */
638 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)639 megasas_enable_intr_ppc(struct megasas_instance *instance)
640 {
641 struct megasas_register_set __iomem *regs;
642
643 regs = instance->reg_set;
644 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
645
646 writel(~0x80000000, &(regs)->outbound_intr_mask);
647
648 /* Dummy readl to force pci flush */
649 readl(®s->outbound_intr_mask);
650 }
651
652 /**
653 * megasas_disable_intr_ppc - Disable interrupt
654 * @instance: Adapter soft state
655 */
656 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)657 megasas_disable_intr_ppc(struct megasas_instance *instance)
658 {
659 struct megasas_register_set __iomem *regs;
660 u32 mask = 0xFFFFFFFF;
661
662 regs = instance->reg_set;
663 writel(mask, ®s->outbound_intr_mask);
664 /* Dummy readl to force pci flush */
665 readl(®s->outbound_intr_mask);
666 }
667
668 /**
669 * megasas_read_fw_status_reg_ppc - returns the current FW status value
670 * @instance: Adapter soft state
671 */
672 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
674 {
675 return readl(&instance->reg_set->outbound_scratch_pad_0);
676 }
677
678 /**
679 * megasas_clear_intr_ppc - Check & clear interrupt
680 * @instance: Adapter soft state
681 */
682 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)683 megasas_clear_intr_ppc(struct megasas_instance *instance)
684 {
685 u32 status, mfiStatus = 0;
686 struct megasas_register_set __iomem *regs;
687 regs = instance->reg_set;
688
689 /*
690 * Check if it is our interrupt
691 */
692 status = readl(®s->outbound_intr_status);
693
694 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
695 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
696
697 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
698 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
699
700 /*
701 * Clear the interrupt by writing back the same value
702 */
703 writel(status, ®s->outbound_doorbell_clear);
704
705 /* Dummy readl to force pci flush */
706 readl(®s->outbound_doorbell_clear);
707
708 return mfiStatus;
709 }
710
711 /**
712 * megasas_fire_cmd_ppc - Sends command to the FW
713 * @instance: Adapter soft state
714 * @frame_phys_addr: Physical address of cmd
715 * @frame_count: Number of frames for the command
716 * @regs: MFI register set
717 */
718 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
720 dma_addr_t frame_phys_addr,
721 u32 frame_count,
722 struct megasas_register_set __iomem *regs)
723 {
724 unsigned long flags;
725
726 spin_lock_irqsave(&instance->hba_lock, flags);
727 writel((frame_phys_addr | (frame_count<<1))|1,
728 &(regs)->inbound_queue_port);
729 spin_unlock_irqrestore(&instance->hba_lock, flags);
730 }
731
732 /**
733 * megasas_check_reset_ppc - For controller reset check
734 * @instance: Adapter soft state
735 * @regs: MFI register set
736 */
737 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)738 megasas_check_reset_ppc(struct megasas_instance *instance,
739 struct megasas_register_set __iomem *regs)
740 {
741 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
742 return 1;
743
744 return 0;
745 }
746
747 static struct megasas_instance_template megasas_instance_template_ppc = {
748
749 .fire_cmd = megasas_fire_cmd_ppc,
750 .enable_intr = megasas_enable_intr_ppc,
751 .disable_intr = megasas_disable_intr_ppc,
752 .clear_intr = megasas_clear_intr_ppc,
753 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
754 .adp_reset = megasas_adp_reset_xscale,
755 .check_reset = megasas_check_reset_ppc,
756 .service_isr = megasas_isr,
757 .tasklet = megasas_complete_cmd_dpc,
758 .init_adapter = megasas_init_adapter_mfi,
759 .build_and_issue_cmd = megasas_build_and_issue_cmd,
760 .issue_dcmd = megasas_issue_dcmd,
761 };
762
763 /**
764 * megasas_enable_intr_skinny - Enables interrupts
765 * @instance: Adapter soft state
766 */
767 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)768 megasas_enable_intr_skinny(struct megasas_instance *instance)
769 {
770 struct megasas_register_set __iomem *regs;
771
772 regs = instance->reg_set;
773 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
774
775 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
776
777 /* Dummy readl to force pci flush */
778 readl(®s->outbound_intr_mask);
779 }
780
781 /**
782 * megasas_disable_intr_skinny - Disables interrupt
783 * @instance: Adapter soft state
784 */
785 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)786 megasas_disable_intr_skinny(struct megasas_instance *instance)
787 {
788 struct megasas_register_set __iomem *regs;
789 u32 mask = 0xFFFFFFFF;
790
791 regs = instance->reg_set;
792 writel(mask, ®s->outbound_intr_mask);
793 /* Dummy readl to force pci flush */
794 readl(®s->outbound_intr_mask);
795 }
796
797 /**
798 * megasas_read_fw_status_reg_skinny - returns the current FW status value
799 * @instance: Adapter soft state
800 */
801 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
803 {
804 return readl(&instance->reg_set->outbound_scratch_pad_0);
805 }
806
807 /**
808 * megasas_clear_intr_skinny - Check & clear interrupt
809 * @instance: Adapter soft state
810 */
811 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)812 megasas_clear_intr_skinny(struct megasas_instance *instance)
813 {
814 u32 status;
815 u32 mfiStatus = 0;
816 struct megasas_register_set __iomem *regs;
817 regs = instance->reg_set;
818
819 /*
820 * Check if it is our interrupt
821 */
822 status = readl(®s->outbound_intr_status);
823
824 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
825 return 0;
826 }
827
828 /*
829 * Check if it is our interrupt
830 */
831 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
832 MFI_STATE_FAULT) {
833 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
834 } else
835 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
836
837 /*
838 * Clear the interrupt by writing back the same value
839 */
840 writel(status, ®s->outbound_intr_status);
841
842 /*
843 * dummy read to flush PCI
844 */
845 readl(®s->outbound_intr_status);
846
847 return mfiStatus;
848 }
849
850 /**
851 * megasas_fire_cmd_skinny - Sends command to the FW
852 * @instance: Adapter soft state
853 * @frame_phys_addr: Physical address of cmd
854 * @frame_count: Number of frames for the command
855 * @regs: MFI register set
856 */
857 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
859 dma_addr_t frame_phys_addr,
860 u32 frame_count,
861 struct megasas_register_set __iomem *regs)
862 {
863 unsigned long flags;
864
865 spin_lock_irqsave(&instance->hba_lock, flags);
866 writel(upper_32_bits(frame_phys_addr),
867 &(regs)->inbound_high_queue_port);
868 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
869 &(regs)->inbound_low_queue_port);
870 spin_unlock_irqrestore(&instance->hba_lock, flags);
871 }
872
873 /**
874 * megasas_check_reset_skinny - For controller reset check
875 * @instance: Adapter soft state
876 * @regs: MFI register set
877 */
878 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)879 megasas_check_reset_skinny(struct megasas_instance *instance,
880 struct megasas_register_set __iomem *regs)
881 {
882 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
883 return 1;
884
885 return 0;
886 }
887
888 static struct megasas_instance_template megasas_instance_template_skinny = {
889
890 .fire_cmd = megasas_fire_cmd_skinny,
891 .enable_intr = megasas_enable_intr_skinny,
892 .disable_intr = megasas_disable_intr_skinny,
893 .clear_intr = megasas_clear_intr_skinny,
894 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
895 .adp_reset = megasas_adp_reset_gen2,
896 .check_reset = megasas_check_reset_skinny,
897 .service_isr = megasas_isr,
898 .tasklet = megasas_complete_cmd_dpc,
899 .init_adapter = megasas_init_adapter_mfi,
900 .build_and_issue_cmd = megasas_build_and_issue_cmd,
901 .issue_dcmd = megasas_issue_dcmd,
902 };
903
904
905 /*
906 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
907 * controllers
908 */
909
910 /**
911 * megasas_enable_intr_gen2 - Enables interrupts
912 * @instance: Adapter soft state
913 */
914 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)915 megasas_enable_intr_gen2(struct megasas_instance *instance)
916 {
917 struct megasas_register_set __iomem *regs;
918
919 regs = instance->reg_set;
920 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
921
922 /* write ~0x00000005 (4 & 1) to the intr mask*/
923 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
924
925 /* Dummy readl to force pci flush */
926 readl(®s->outbound_intr_mask);
927 }
928
929 /**
930 * megasas_disable_intr_gen2 - Disables interrupt
931 * @instance: Adapter soft state
932 */
933 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)934 megasas_disable_intr_gen2(struct megasas_instance *instance)
935 {
936 struct megasas_register_set __iomem *regs;
937 u32 mask = 0xFFFFFFFF;
938
939 regs = instance->reg_set;
940 writel(mask, ®s->outbound_intr_mask);
941 /* Dummy readl to force pci flush */
942 readl(®s->outbound_intr_mask);
943 }
944
945 /**
946 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
947 * @instance: Adapter soft state
948 */
949 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
951 {
952 return readl(&instance->reg_set->outbound_scratch_pad_0);
953 }
954
955 /**
956 * megasas_clear_intr_gen2 - Check & clear interrupt
957 * @instance: Adapter soft state
958 */
959 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)960 megasas_clear_intr_gen2(struct megasas_instance *instance)
961 {
962 u32 status;
963 u32 mfiStatus = 0;
964 struct megasas_register_set __iomem *regs;
965 regs = instance->reg_set;
966
967 /*
968 * Check if it is our interrupt
969 */
970 status = readl(®s->outbound_intr_status);
971
972 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
973 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
974 }
975 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
976 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
977 }
978
979 /*
980 * Clear the interrupt by writing back the same value
981 */
982 if (mfiStatus)
983 writel(status, ®s->outbound_doorbell_clear);
984
985 /* Dummy readl to force pci flush */
986 readl(®s->outbound_intr_status);
987
988 return mfiStatus;
989 }
990
991 /**
992 * megasas_fire_cmd_gen2 - Sends command to the FW
993 * @instance: Adapter soft state
994 * @frame_phys_addr: Physical address of cmd
995 * @frame_count: Number of frames for the command
996 * @regs: MFI register set
997 */
998 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000 dma_addr_t frame_phys_addr,
1001 u32 frame_count,
1002 struct megasas_register_set __iomem *regs)
1003 {
1004 unsigned long flags;
1005
1006 spin_lock_irqsave(&instance->hba_lock, flags);
1007 writel((frame_phys_addr | (frame_count<<1))|1,
1008 &(regs)->inbound_queue_port);
1009 spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013 * megasas_adp_reset_gen2 - For controller reset
1014 * @instance: Adapter soft state
1015 * @reg_set: MFI register set
1016 */
1017 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019 struct megasas_register_set __iomem *reg_set)
1020 {
1021 u32 retry = 0 ;
1022 u32 HostDiag;
1023 u32 __iomem *seq_offset = ®_set->seq_offset;
1024 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1025
1026 if (instance->instancet == &megasas_instance_template_skinny) {
1027 seq_offset = ®_set->fusion_seq_offset;
1028 hostdiag_offset = ®_set->fusion_host_diag;
1029 }
1030
1031 writel(0, seq_offset);
1032 writel(4, seq_offset);
1033 writel(0xb, seq_offset);
1034 writel(2, seq_offset);
1035 writel(7, seq_offset);
1036 writel(0xd, seq_offset);
1037
1038 msleep(1000);
1039
1040 HostDiag = (u32)readl(hostdiag_offset);
1041
1042 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043 msleep(100);
1044 HostDiag = (u32)readl(hostdiag_offset);
1045 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046 retry, HostDiag);
1047
1048 if (retry++ >= 100)
1049 return 1;
1050
1051 }
1052
1053 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057 ssleep(10);
1058
1059 HostDiag = (u32)readl(hostdiag_offset);
1060 while (HostDiag & DIAG_RESET_ADAPTER) {
1061 msleep(100);
1062 HostDiag = (u32)readl(hostdiag_offset);
1063 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064 retry, HostDiag);
1065
1066 if (retry++ >= 1000)
1067 return 1;
1068
1069 }
1070 return 0;
1071 }
1072
1073 /**
1074 * megasas_check_reset_gen2 - For controller reset check
1075 * @instance: Adapter soft state
1076 * @regs: MFI register set
1077 */
1078 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080 struct megasas_register_set __iomem *regs)
1081 {
1082 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083 return 1;
1084
1085 return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090 .fire_cmd = megasas_fire_cmd_gen2,
1091 .enable_intr = megasas_enable_intr_gen2,
1092 .disable_intr = megasas_disable_intr_gen2,
1093 .clear_intr = megasas_clear_intr_gen2,
1094 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095 .adp_reset = megasas_adp_reset_gen2,
1096 .check_reset = megasas_check_reset_gen2,
1097 .service_isr = megasas_isr,
1098 .tasklet = megasas_complete_cmd_dpc,
1099 .init_adapter = megasas_init_adapter_mfi,
1100 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101 .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105 * This is the end of set of functions & definitions
1106 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107 */
1108
1109 /*
1110 * Template added for TB (Fusion)
1111 */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115 * megasas_issue_polled - Issues a polling command
1116 * @instance: Adapter soft state
1117 * @cmd: Command packet to be issued
1118 *
1119 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120 */
1121 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131 __func__, __LINE__);
1132 return DCMD_INIT;
1133 }
1134
1135 instance->instancet->issue_dcmd(instance, cmd);
1136
1137 return wait_and_poll(instance, cmd, instance->requestorId ?
1138 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1143 * @instance: Adapter soft state
1144 * @cmd: Command to be issued
1145 * @timeout: Timeout in seconds
1146 *
1147 * This function waits on an event for the command to be returned from ISR.
1148 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149 * Used to issue ioctl commands.
1150 */
1151 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153 struct megasas_cmd *cmd, int timeout)
1154 {
1155 int ret = 0;
1156 cmd->cmd_status_drv = DCMD_INIT;
1157
1158 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160 __func__, __LINE__);
1161 return DCMD_INIT;
1162 }
1163
1164 instance->instancet->issue_dcmd(instance, cmd);
1165
1166 if (timeout) {
1167 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169 if (!ret) {
1170 dev_err(&instance->pdev->dev,
1171 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172 cmd->frame->dcmd.opcode, __func__);
1173 return DCMD_TIMEOUT;
1174 }
1175 } else
1176 wait_event(instance->int_cmd_wait_q,
1177 cmd->cmd_status_drv != DCMD_INIT);
1178
1179 return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1184 * @instance: Adapter soft state
1185 * @cmd_to_abort: Previously issued cmd to be aborted
1186 * @timeout: Timeout in seconds
1187 *
1188 * MFI firmware can abort previously issued AEN comamnd (automatic event
1189 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190 * cmd and waits for return status.
1191 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192 */
1193 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197 struct megasas_cmd *cmd;
1198 struct megasas_abort_frame *abort_fr;
1199 int ret = 0;
1200 u32 opcode;
1201
1202 cmd = megasas_get_cmd(instance);
1203
1204 if (!cmd)
1205 return -1;
1206
1207 abort_fr = &cmd->frame->abort;
1208
1209 /*
1210 * Prepare and issue the abort frame
1211 */
1212 abort_fr->cmd = MFI_CMD_ABORT;
1213 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214 abort_fr->flags = cpu_to_le16(0);
1215 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216 abort_fr->abort_mfi_phys_addr_lo =
1217 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218 abort_fr->abort_mfi_phys_addr_hi =
1219 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221 cmd->sync_cmd = 1;
1222 cmd->cmd_status_drv = DCMD_INIT;
1223
1224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226 __func__, __LINE__);
1227 return DCMD_INIT;
1228 }
1229
1230 instance->instancet->issue_dcmd(instance, cmd);
1231
1232 if (timeout) {
1233 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235 if (!ret) {
1236 opcode = cmd_to_abort->frame->dcmd.opcode;
1237 dev_err(&instance->pdev->dev,
1238 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239 opcode, __func__);
1240 return DCMD_TIMEOUT;
1241 }
1242 } else
1243 wait_event(instance->abort_cmd_wait_q,
1244 cmd->cmd_status_drv != DCMD_INIT);
1245
1246 cmd->sync_cmd = 0;
1247
1248 megasas_return_cmd(instance, cmd);
1249 return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253 * megasas_make_sgl32 - Prepares 32-bit SGL
1254 * @instance: Adapter soft state
1255 * @scp: SCSI command from the mid-layer
1256 * @mfi_sgl: SGL to be filled in
1257 *
1258 * If successful, this function returns the number of SG elements. Otherwise,
1259 * it returnes -1.
1260 */
1261 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263 union megasas_sgl *mfi_sgl)
1264 {
1265 int i;
1266 int sge_count;
1267 struct scatterlist *os_sgl;
1268
1269 sge_count = scsi_dma_map(scp);
1270 BUG_ON(sge_count < 0);
1271
1272 if (sge_count) {
1273 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276 }
1277 }
1278 return sge_count;
1279 }
1280
1281 /**
1282 * megasas_make_sgl64 - Prepares 64-bit SGL
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command from the mid-layer
1285 * @mfi_sgl: SGL to be filled in
1286 *
1287 * If successful, this function returns the number of SG elements. Otherwise,
1288 * it returnes -1.
1289 */
1290 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292 union megasas_sgl *mfi_sgl)
1293 {
1294 int i;
1295 int sge_count;
1296 struct scatterlist *os_sgl;
1297
1298 sge_count = scsi_dma_map(scp);
1299 BUG_ON(sge_count < 0);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305 }
1306 }
1307 return sge_count;
1308 }
1309
1310 /**
1311 * megasas_make_sgl_skinny - Prepares IEEE SGL
1312 * @instance: Adapter soft state
1313 * @scp: SCSI command from the mid-layer
1314 * @mfi_sgl: SGL to be filled in
1315 *
1316 * If successful, this function returns the number of SG elements. Otherwise,
1317 * it returnes -1.
1318 */
1319 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323 int i;
1324 int sge_count;
1325 struct scatterlist *os_sgl;
1326
1327 sge_count = scsi_dma_map(scp);
1328
1329 if (sge_count) {
1330 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331 mfi_sgl->sge_skinny[i].length =
1332 cpu_to_le32(sg_dma_len(os_sgl));
1333 mfi_sgl->sge_skinny[i].phys_addr =
1334 cpu_to_le64(sg_dma_address(os_sgl));
1335 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336 }
1337 }
1338 return sge_count;
1339 }
1340
1341 /**
1342 * megasas_get_frame_count - Computes the number of frames
1343 * @frame_type : type of frame- io or pthru frame
1344 * @sge_count : number of sg elements
1345 *
1346 * Returns the number of frames required for numnber of sge's (sge_count)
1347 */
1348
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350 u8 sge_count, u8 frame_type)
1351 {
1352 int num_cnt;
1353 int sge_bytes;
1354 u32 sge_sz;
1355 u32 frame_count = 0;
1356
1357 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358 sizeof(struct megasas_sge32);
1359
1360 if (instance->flag_ieee) {
1361 sge_sz = sizeof(struct megasas_sge_skinny);
1362 }
1363
1364 /*
1365 * Main frame can contain 2 SGEs for 64-bit SGLs and
1366 * 3 SGEs for 32-bit SGLs for ldio &
1367 * 1 SGEs for 64-bit SGLs and
1368 * 2 SGEs for 32-bit SGLs for pthru frame
1369 */
1370 if (unlikely(frame_type == PTHRU_FRAME)) {
1371 if (instance->flag_ieee == 1) {
1372 num_cnt = sge_count - 1;
1373 } else if (IS_DMA64)
1374 num_cnt = sge_count - 1;
1375 else
1376 num_cnt = sge_count - 2;
1377 } else {
1378 if (instance->flag_ieee == 1) {
1379 num_cnt = sge_count - 1;
1380 } else if (IS_DMA64)
1381 num_cnt = sge_count - 2;
1382 else
1383 num_cnt = sge_count - 3;
1384 }
1385
1386 if (num_cnt > 0) {
1387 sge_bytes = sge_sz * num_cnt;
1388
1389 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391 }
1392 /* Main frame */
1393 frame_count += 1;
1394
1395 if (frame_count > 7)
1396 frame_count = 8;
1397 return frame_count;
1398 }
1399
1400 /**
1401 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402 * @instance: Adapter soft state
1403 * @scp: SCSI command
1404 * @cmd: Command to be prepared in
1405 *
1406 * This function prepares CDB commands. These are typcially pass-through
1407 * commands to the devices.
1408 */
1409 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411 struct megasas_cmd *cmd)
1412 {
1413 u32 is_logical;
1414 u32 device_id;
1415 u16 flags = 0;
1416 struct megasas_pthru_frame *pthru;
1417
1418 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419 device_id = MEGASAS_DEV_INDEX(scp);
1420 pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422 if (scp->sc_data_direction == DMA_TO_DEVICE)
1423 flags = MFI_FRAME_DIR_WRITE;
1424 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425 flags = MFI_FRAME_DIR_READ;
1426 else if (scp->sc_data_direction == DMA_NONE)
1427 flags = MFI_FRAME_DIR_NONE;
1428
1429 if (instance->flag_ieee == 1) {
1430 flags |= MFI_FRAME_IEEE;
1431 }
1432
1433 /*
1434 * Prepare the DCDB frame
1435 */
1436 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437 pthru->cmd_status = 0x0;
1438 pthru->scsi_status = 0x0;
1439 pthru->target_id = device_id;
1440 pthru->lun = scp->device->lun;
1441 pthru->cdb_len = scp->cmd_len;
1442 pthru->timeout = 0;
1443 pthru->pad_0 = 0;
1444 pthru->flags = cpu_to_le16(flags);
1445 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449 /*
1450 * If the command is for the tape device, set the
1451 * pthru timeout to the os layer timeout value.
1452 */
1453 if (scp->device->type == TYPE_TAPE) {
1454 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455 pthru->timeout = cpu_to_le16(0xFFFF);
1456 else
1457 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458 }
1459
1460 /*
1461 * Construct SGL
1462 */
1463 if (instance->flag_ieee == 1) {
1464 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466 &pthru->sgl);
1467 } else if (IS_DMA64) {
1468 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470 &pthru->sgl);
1471 } else
1472 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473 &pthru->sgl);
1474
1475 if (pthru->sge_count > instance->max_num_sge) {
1476 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477 pthru->sge_count);
1478 return 0;
1479 }
1480
1481 /*
1482 * Sense info specific
1483 */
1484 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485 pthru->sense_buf_phys_addr_hi =
1486 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487 pthru->sense_buf_phys_addr_lo =
1488 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490 /*
1491 * Compute the total number of frames this command consumes. FW uses
1492 * this number to pull sufficient number of frames from host memory.
1493 */
1494 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495 PTHRU_FRAME);
1496
1497 return cmd->frame_count;
1498 }
1499
1500 /**
1501 * megasas_build_ldio - Prepares IOs to logical devices
1502 * @instance: Adapter soft state
1503 * @scp: SCSI command
1504 * @cmd: Command to be prepared
1505 *
1506 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507 */
1508 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510 struct megasas_cmd *cmd)
1511 {
1512 u32 device_id;
1513 u8 sc = scp->cmnd[0];
1514 u16 flags = 0;
1515 struct megasas_io_frame *ldio;
1516
1517 device_id = MEGASAS_DEV_INDEX(scp);
1518 ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520 if (scp->sc_data_direction == DMA_TO_DEVICE)
1521 flags = MFI_FRAME_DIR_WRITE;
1522 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523 flags = MFI_FRAME_DIR_READ;
1524
1525 if (instance->flag_ieee == 1) {
1526 flags |= MFI_FRAME_IEEE;
1527 }
1528
1529 /*
1530 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531 */
1532 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533 ldio->cmd_status = 0x0;
1534 ldio->scsi_status = 0x0;
1535 ldio->target_id = device_id;
1536 ldio->timeout = 0;
1537 ldio->reserved_0 = 0;
1538 ldio->pad_0 = 0;
1539 ldio->flags = cpu_to_le16(flags);
1540 ldio->start_lba_hi = 0;
1541 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543 /*
1544 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545 */
1546 if (scp->cmd_len == 6) {
1547 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549 ((u32) scp->cmnd[2] << 8) |
1550 (u32) scp->cmnd[3]);
1551
1552 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553 }
1554
1555 /*
1556 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557 */
1558 else if (scp->cmd_len == 10) {
1559 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560 ((u32) scp->cmnd[7] << 8));
1561 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562 ((u32) scp->cmnd[3] << 16) |
1563 ((u32) scp->cmnd[4] << 8) |
1564 (u32) scp->cmnd[5]);
1565 }
1566
1567 /*
1568 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569 */
1570 else if (scp->cmd_len == 12) {
1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572 ((u32) scp->cmnd[7] << 16) |
1573 ((u32) scp->cmnd[8] << 8) |
1574 (u32) scp->cmnd[9]);
1575
1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577 ((u32) scp->cmnd[3] << 16) |
1578 ((u32) scp->cmnd[4] << 8) |
1579 (u32) scp->cmnd[5]);
1580 }
1581
1582 /*
1583 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584 */
1585 else if (scp->cmd_len == 16) {
1586 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587 ((u32) scp->cmnd[11] << 16) |
1588 ((u32) scp->cmnd[12] << 8) |
1589 (u32) scp->cmnd[13]);
1590
1591 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592 ((u32) scp->cmnd[7] << 16) |
1593 ((u32) scp->cmnd[8] << 8) |
1594 (u32) scp->cmnd[9]);
1595
1596 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597 ((u32) scp->cmnd[3] << 16) |
1598 ((u32) scp->cmnd[4] << 8) |
1599 (u32) scp->cmnd[5]);
1600
1601 }
1602
1603 /*
1604 * Construct SGL
1605 */
1606 if (instance->flag_ieee) {
1607 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609 &ldio->sgl);
1610 } else if (IS_DMA64) {
1611 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613 } else
1614 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616 if (ldio->sge_count > instance->max_num_sge) {
1617 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618 ldio->sge_count);
1619 return 0;
1620 }
1621
1622 /*
1623 * Sense info specific
1624 */
1625 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626 ldio->sense_buf_phys_addr_hi = 0;
1627 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629 /*
1630 * Compute the total number of frames this command consumes. FW uses
1631 * this number to pull sufficient number of frames from host memory.
1632 */
1633 cmd->frame_count = megasas_get_frame_count(instance,
1634 ldio->sge_count, IO_FRAME);
1635
1636 return cmd->frame_count;
1637 }
1638
1639 /**
1640 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1641 * and whether it's RW or non RW
1642 * @cmd: SCSI command
1643 *
1644 */
megasas_cmd_type(struct scsi_cmnd * cmd)1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647 int ret;
1648
1649 switch (cmd->cmnd[0]) {
1650 case READ_10:
1651 case WRITE_10:
1652 case READ_12:
1653 case WRITE_12:
1654 case READ_6:
1655 case WRITE_6:
1656 case READ_16:
1657 case WRITE_16:
1658 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660 break;
1661 default:
1662 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664 }
1665 return ret;
1666 }
1667
1668 /**
1669 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1670 * in FW
1671 * @instance: Adapter soft state
1672 */
1673 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676 struct megasas_cmd *cmd;
1677 int i,n;
1678 union megasas_sgl *mfi_sgl;
1679 struct megasas_io_frame *ldio;
1680 struct megasas_pthru_frame *pthru;
1681 u32 sgcount;
1682 u16 max_cmd = instance->max_fw_cmds;
1683
1684 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686 if (IS_DMA64)
1687 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688 else
1689 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692 for (i = 0; i < max_cmd; i++) {
1693 cmd = instance->cmd_list[i];
1694 if (!cmd->scmd)
1695 continue;
1696 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698 ldio = (struct megasas_io_frame *)cmd->frame;
1699 mfi_sgl = &ldio->sgl;
1700 sgcount = ldio->sge_count;
1701 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706 } else {
1707 pthru = (struct megasas_pthru_frame *) cmd->frame;
1708 mfi_sgl = &pthru->sgl;
1709 sgcount = pthru->sge_count;
1710 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715 }
1716 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717 for (n = 0; n < sgcount; n++) {
1718 if (IS_DMA64)
1719 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720 le32_to_cpu(mfi_sgl->sge64[n].length),
1721 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722 else
1723 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724 le32_to_cpu(mfi_sgl->sge32[n].length),
1725 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726 }
1727 }
1728 } /*for max_cmd*/
1729 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730 for (i = 0; i < max_cmd; i++) {
1731
1732 cmd = instance->cmd_list[i];
1733
1734 if (cmd->sync_cmd == 1)
1735 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736 }
1737 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742 struct scsi_cmnd *scmd)
1743 {
1744 struct megasas_cmd *cmd;
1745 u32 frame_count;
1746
1747 cmd = megasas_get_cmd(instance);
1748 if (!cmd)
1749 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751 /*
1752 * Logical drive command
1753 */
1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756 else
1757 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759 if (!frame_count)
1760 goto out_return_cmd;
1761
1762 cmd->scmd = scmd;
1763 scmd->SCp.ptr = (char *)cmd;
1764
1765 /*
1766 * Issue the command to the FW
1767 */
1768 atomic_inc(&instance->fw_outstanding);
1769
1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771 cmd->frame_count-1, instance->reg_set);
1772
1773 return 0;
1774 out_return_cmd:
1775 megasas_return_cmd(instance, cmd);
1776 return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781 * megasas_queue_command - Queue entry point
1782 * @shost: adapter SCSI host
1783 * @scmd: SCSI command to be queued
1784 */
1785 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788 struct megasas_instance *instance;
1789 struct MR_PRIV_DEVICE *mr_device_priv_data;
1790 u32 ld_tgt_id;
1791
1792 instance = (struct megasas_instance *)
1793 scmd->device->host->hostdata;
1794
1795 if (instance->unload == 1) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scmd->scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (instance->issuepend_done == 0)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805 /* Check for an mpio path and adjust behavior */
1806 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807 if (megasas_check_mpio_paths(instance, scmd) ==
1808 (DID_REQUEUE << 16)) {
1809 return SCSI_MLQUEUE_HOST_BUSY;
1810 } else {
1811 scmd->result = DID_NO_CONNECT << 16;
1812 scmd->scsi_done(scmd);
1813 return 0;
1814 }
1815 }
1816
1817 mr_device_priv_data = scmd->device->hostdata;
1818 if (!mr_device_priv_data ||
1819 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820 scmd->result = DID_NO_CONNECT << 16;
1821 scmd->scsi_done(scmd);
1822 return 0;
1823 }
1824
1825 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828 scmd->result = DID_NO_CONNECT << 16;
1829 scmd->scsi_done(scmd);
1830 return 0;
1831 }
1832 }
1833
1834 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837 if (mr_device_priv_data->tm_busy)
1838 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841 scmd->result = 0;
1842
1843 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844 (scmd->device->id >= instance->fw_supported_vd_count ||
1845 scmd->device->lun)) {
1846 scmd->result = DID_BAD_TARGET << 16;
1847 goto out_done;
1848 }
1849
1850 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851 MEGASAS_IS_LOGICAL(scmd->device) &&
1852 (!instance->fw_sync_cache_support)) {
1853 scmd->result = DID_OK << 16;
1854 goto out_done;
1855 }
1856
1857 return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859 out_done:
1860 scmd->scsi_done(scmd);
1861 return 0;
1862 }
1863
megasas_lookup_instance(u16 host_no)1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866 int i;
1867
1868 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870 if ((megasas_mgmt_info.instance[i]) &&
1871 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872 return megasas_mgmt_info.instance[i];
1873 }
1874
1875 return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891 bool is_target_prop)
1892 {
1893 u16 pd_index = 0, ld;
1894 u32 device_id;
1895 struct megasas_instance *instance;
1896 struct fusion_context *fusion;
1897 struct MR_PRIV_DEVICE *mr_device_priv_data;
1898 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899 struct MR_LD_RAID *raid;
1900 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902 instance = megasas_lookup_instance(sdev->host->host_no);
1903 fusion = instance->ctrl_context;
1904 mr_device_priv_data = sdev->hostdata;
1905
1906 if (!fusion || !mr_device_priv_data)
1907 return;
1908
1909 if (MEGASAS_IS_LOGICAL(sdev)) {
1910 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911 + sdev->id;
1912 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914 if (ld >= instance->fw_supported_vd_count)
1915 return;
1916 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921 mr_device_priv_data->is_tm_capable =
1922 raid->capability.tmCapable;
1923
1924 if (!raid->flags.isEPD)
1925 sdev->no_write_same = 1;
1926
1927 } else if (instance->use_seqnum_jbod_fp) {
1928 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929 sdev->id;
1930 pd_sync = (void *)fusion->pd_seq_sync
1931 [(instance->pd_seq_map_id - 1) & 1];
1932 mr_device_priv_data->is_tm_capable =
1933 pd_sync->seq[pd_index].capability.tmCapable;
1934 }
1935
1936 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937 /*
1938 * If FW provides a target reset timeout value, driver will use
1939 * it. If not set, fallback to default values.
1940 */
1941 mr_device_priv_data->target_reset_tmo =
1942 min_t(u8, instance->max_reset_tmo,
1943 instance->tgt_prop->reset_tmo);
1944 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945 } else {
1946 mr_device_priv_data->target_reset_tmo =
1947 MEGASAS_DEFAULT_TM_TIMEOUT;
1948 mr_device_priv_data->task_abort_tmo =
1949 MEGASAS_DEFAULT_TM_TIMEOUT;
1950 }
1951 }
1952
1953 /*
1954 * megasas_set_nvme_device_properties -
1955 * set nomerges=2
1956 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958 *
1959 * MR firmware provides value in KB. Caller of this function converts
1960 * kb into bytes.
1961 *
1962 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963 * MR firmware provides value 128 as (32 * 4K) = 128K.
1964 *
1965 * @sdev: scsi device
1966 * @max_io_size: maximum io transfer size
1967 *
1968 */
1969 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972 struct megasas_instance *instance;
1973 u32 mr_nvme_pg_size;
1974
1975 instance = (struct megasas_instance *)sdev->host->hostdata;
1976 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
megasas_slave_configure(struct scsi_device * sdev)2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071 u16 pd_index = 0;
2072 struct megasas_instance *instance;
2073 int ret_target_prop = DCMD_FAILED;
2074 bool is_target_prop = false;
2075
2076 instance = megasas_lookup_instance(sdev->host->host_no);
2077 if (instance->pd_list_not_supported) {
2078 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080 sdev->id;
2081 if (instance->pd_list[pd_index].driveState !=
2082 MR_PD_STATE_SYSTEM)
2083 return -ENXIO;
2084 }
2085 }
2086
2087 mutex_lock(&instance->reset_mutex);
2088 /* Send DCMD to Firmware and cache the information */
2089 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090 megasas_get_pd_info(instance, sdev);
2091
2092 /* Some ventura firmware may not have instance->nvme_page_size set.
2093 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094 */
2095 if ((instance->tgt_prop) && (instance->nvme_page_size))
2096 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099 megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101 /* This sdev property may change post OCR */
2102 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104 mutex_unlock(&instance->reset_mutex);
2105
2106 return 0;
2107 }
2108
megasas_slave_alloc(struct scsi_device * sdev)2109 static int megasas_slave_alloc(struct scsi_device *sdev)
2110 {
2111 u16 pd_index = 0, ld_tgt_id;
2112 struct megasas_instance *instance ;
2113 struct MR_PRIV_DEVICE *mr_device_priv_data;
2114
2115 instance = megasas_lookup_instance(sdev->host->host_no);
2116 if (!MEGASAS_IS_LOGICAL(sdev)) {
2117 /*
2118 * Open the OS scan to the SYSTEM PD
2119 */
2120 pd_index =
2121 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2122 sdev->id;
2123 if ((instance->pd_list_not_supported ||
2124 instance->pd_list[pd_index].driveState ==
2125 MR_PD_STATE_SYSTEM)) {
2126 goto scan_target;
2127 }
2128 return -ENXIO;
2129 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2130 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2131 return -ENXIO;
2132 }
2133
2134 scan_target:
2135 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2136 GFP_KERNEL);
2137 if (!mr_device_priv_data)
2138 return -ENOMEM;
2139
2140 if (MEGASAS_IS_LOGICAL(sdev)) {
2141 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2142 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2143 if (megasas_dbg_lvl & LD_PD_DEBUG)
2144 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2145 }
2146
2147 sdev->hostdata = mr_device_priv_data;
2148
2149 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2150 instance->r1_ldio_hint_default);
2151 return 0;
2152 }
2153
megasas_slave_destroy(struct scsi_device * sdev)2154 static void megasas_slave_destroy(struct scsi_device *sdev)
2155 {
2156 u16 ld_tgt_id;
2157 struct megasas_instance *instance;
2158
2159 instance = megasas_lookup_instance(sdev->host->host_no);
2160
2161 if (MEGASAS_IS_LOGICAL(sdev)) {
2162 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2163 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2164 return;
2165 }
2166 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2167 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2168 if (megasas_dbg_lvl & LD_PD_DEBUG)
2169 sdev_printk(KERN_INFO, sdev,
2170 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2171 }
2172
2173 kfree(sdev->hostdata);
2174 sdev->hostdata = NULL;
2175 }
2176
2177 /*
2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2179 * kill adapter
2180 * @instance: Adapter soft state
2181 *
2182 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2184 {
2185 int i;
2186 struct megasas_cmd *cmd_mfi;
2187 struct megasas_cmd_fusion *cmd_fusion;
2188 struct fusion_context *fusion = instance->ctrl_context;
2189
2190 /* Find all outstanding ioctls */
2191 if (fusion) {
2192 for (i = 0; i < instance->max_fw_cmds; i++) {
2193 cmd_fusion = fusion->cmd_list[i];
2194 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2195 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2196 if (cmd_mfi->sync_cmd &&
2197 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2198 cmd_mfi->frame->hdr.cmd_status =
2199 MFI_STAT_WRONG_STATE;
2200 megasas_complete_cmd(instance,
2201 cmd_mfi, DID_OK);
2202 }
2203 }
2204 }
2205 } else {
2206 for (i = 0; i < instance->max_fw_cmds; i++) {
2207 cmd_mfi = instance->cmd_list[i];
2208 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2209 MFI_CMD_ABORT)
2210 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2211 }
2212 }
2213 }
2214
2215
megaraid_sas_kill_hba(struct megasas_instance * instance)2216 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2217 {
2218 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2219 dev_warn(&instance->pdev->dev,
2220 "Adapter already dead, skipping kill HBA\n");
2221 return;
2222 }
2223
2224 /* Set critical error to block I/O & ioctls in case caller didn't */
2225 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2226 /* Wait 1 second to ensure IO or ioctls in build have posted */
2227 msleep(1000);
2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2230 (instance->adapter_type != MFI_SERIES)) {
2231 if (!instance->requestorId) {
2232 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2233 /* Flush */
2234 readl(&instance->reg_set->doorbell);
2235 }
2236 if (instance->requestorId && instance->peerIsPresent)
2237 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2238 } else {
2239 writel(MFI_STOP_ADP,
2240 &instance->reg_set->inbound_doorbell);
2241 }
2242 /* Complete outstanding ioctls when adapter is killed */
2243 megasas_complete_outstanding_ioctls(instance);
2244 }
2245
2246 /**
2247 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2248 * restored to max value
2249 * @instance: Adapter soft state
2250 *
2251 */
2252 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2254 {
2255 unsigned long flags;
2256
2257 if (instance->flag & MEGASAS_FW_BUSY
2258 && time_after(jiffies, instance->last_time + 5 * HZ)
2259 && atomic_read(&instance->fw_outstanding) <
2260 instance->throttlequeuedepth + 1) {
2261
2262 spin_lock_irqsave(instance->host->host_lock, flags);
2263 instance->flag &= ~MEGASAS_FW_BUSY;
2264
2265 instance->host->can_queue = instance->cur_can_queue;
2266 spin_unlock_irqrestore(instance->host->host_lock, flags);
2267 }
2268 }
2269
2270 /**
2271 * megasas_complete_cmd_dpc - Returns FW's controller structure
2272 * @instance_addr: Address of adapter soft state
2273 *
2274 * Tasklet to complete cmds
2275 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2277 {
2278 u32 producer;
2279 u32 consumer;
2280 u32 context;
2281 struct megasas_cmd *cmd;
2282 struct megasas_instance *instance =
2283 (struct megasas_instance *)instance_addr;
2284 unsigned long flags;
2285
2286 /* If we have already declared adapter dead, donot complete cmds */
2287 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2288 return;
2289
2290 spin_lock_irqsave(&instance->completion_lock, flags);
2291
2292 producer = le32_to_cpu(*instance->producer);
2293 consumer = le32_to_cpu(*instance->consumer);
2294
2295 while (consumer != producer) {
2296 context = le32_to_cpu(instance->reply_queue[consumer]);
2297 if (context >= instance->max_fw_cmds) {
2298 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2299 context);
2300 BUG();
2301 }
2302
2303 cmd = instance->cmd_list[context];
2304
2305 megasas_complete_cmd(instance, cmd, DID_OK);
2306
2307 consumer++;
2308 if (consumer == (instance->max_fw_cmds + 1)) {
2309 consumer = 0;
2310 }
2311 }
2312
2313 *instance->consumer = cpu_to_le32(producer);
2314
2315 spin_unlock_irqrestore(&instance->completion_lock, flags);
2316
2317 /*
2318 * Check if we can restore can_queue
2319 */
2320 megasas_check_and_restore_queue_depth(instance);
2321 }
2322
2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2324
2325 /**
2326 * megasas_start_timer - Initializes sriov heartbeat timer object
2327 * @instance: Adapter soft state
2328 *
2329 */
megasas_start_timer(struct megasas_instance * instance)2330 void megasas_start_timer(struct megasas_instance *instance)
2331 {
2332 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2333
2334 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2335 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2336 add_timer(timer);
2337 }
2338
2339 static void
2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2341
2342 static void
2343 process_fw_state_change_wq(struct work_struct *work);
2344
megasas_do_ocr(struct megasas_instance * instance)2345 static void megasas_do_ocr(struct megasas_instance *instance)
2346 {
2347 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2348 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2349 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2350 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2351 }
2352 instance->instancet->disable_intr(instance);
2353 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2354 instance->issuepend_done = 0;
2355
2356 atomic_set(&instance->fw_outstanding, 0);
2357 megasas_internal_reset_defer_cmds(instance);
2358 process_fw_state_change_wq(&instance->work_init);
2359 }
2360
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2362 int initial)
2363 {
2364 struct megasas_cmd *cmd;
2365 struct megasas_dcmd_frame *dcmd;
2366 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2367 dma_addr_t new_affiliation_111_h;
2368 int ld, retval = 0;
2369 u8 thisVf;
2370
2371 cmd = megasas_get_cmd(instance);
2372
2373 if (!cmd) {
2374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2375 "Failed to get cmd for scsi%d\n",
2376 instance->host->host_no);
2377 return -ENOMEM;
2378 }
2379
2380 dcmd = &cmd->frame->dcmd;
2381
2382 if (!instance->vf_affiliation_111) {
2383 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2384 "affiliation for scsi%d\n", instance->host->host_no);
2385 megasas_return_cmd(instance, cmd);
2386 return -ENOMEM;
2387 }
2388
2389 if (initial)
2390 memset(instance->vf_affiliation_111, 0,
2391 sizeof(struct MR_LD_VF_AFFILIATION_111));
2392 else {
2393 new_affiliation_111 =
2394 dma_alloc_coherent(&instance->pdev->dev,
2395 sizeof(struct MR_LD_VF_AFFILIATION_111),
2396 &new_affiliation_111_h, GFP_KERNEL);
2397 if (!new_affiliation_111) {
2398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2399 "memory for new affiliation for scsi%d\n",
2400 instance->host->host_no);
2401 megasas_return_cmd(instance, cmd);
2402 return -ENOMEM;
2403 }
2404 }
2405
2406 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2407
2408 dcmd->cmd = MFI_CMD_DCMD;
2409 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2410 dcmd->sge_count = 1;
2411 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2412 dcmd->timeout = 0;
2413 dcmd->pad_0 = 0;
2414 dcmd->data_xfer_len =
2415 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2416 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2417
2418 if (initial)
2419 dcmd->sgl.sge32[0].phys_addr =
2420 cpu_to_le32(instance->vf_affiliation_111_h);
2421 else
2422 dcmd->sgl.sge32[0].phys_addr =
2423 cpu_to_le32(new_affiliation_111_h);
2424
2425 dcmd->sgl.sge32[0].length = cpu_to_le32(
2426 sizeof(struct MR_LD_VF_AFFILIATION_111));
2427
2428 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2429 "scsi%d\n", instance->host->host_no);
2430
2431 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2432 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2433 " failed with status 0x%x for scsi%d\n",
2434 dcmd->cmd_status, instance->host->host_no);
2435 retval = 1; /* Do a scan if we couldn't get affiliation */
2436 goto out;
2437 }
2438
2439 if (!initial) {
2440 thisVf = new_affiliation_111->thisVf;
2441 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2442 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2443 new_affiliation_111->map[ld].policy[thisVf]) {
2444 dev_warn(&instance->pdev->dev, "SR-IOV: "
2445 "Got new LD/VF affiliation for scsi%d\n",
2446 instance->host->host_no);
2447 memcpy(instance->vf_affiliation_111,
2448 new_affiliation_111,
2449 sizeof(struct MR_LD_VF_AFFILIATION_111));
2450 retval = 1;
2451 goto out;
2452 }
2453 }
2454 out:
2455 if (new_affiliation_111) {
2456 dma_free_coherent(&instance->pdev->dev,
2457 sizeof(struct MR_LD_VF_AFFILIATION_111),
2458 new_affiliation_111,
2459 new_affiliation_111_h);
2460 }
2461
2462 megasas_return_cmd(instance, cmd);
2463
2464 return retval;
2465 }
2466
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2468 int initial)
2469 {
2470 struct megasas_cmd *cmd;
2471 struct megasas_dcmd_frame *dcmd;
2472 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2473 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2474 dma_addr_t new_affiliation_h;
2475 int i, j, retval = 0, found = 0, doscan = 0;
2476 u8 thisVf;
2477
2478 cmd = megasas_get_cmd(instance);
2479
2480 if (!cmd) {
2481 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2482 "Failed to get cmd for scsi%d\n",
2483 instance->host->host_no);
2484 return -ENOMEM;
2485 }
2486
2487 dcmd = &cmd->frame->dcmd;
2488
2489 if (!instance->vf_affiliation) {
2490 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2491 "affiliation for scsi%d\n", instance->host->host_no);
2492 megasas_return_cmd(instance, cmd);
2493 return -ENOMEM;
2494 }
2495
2496 if (initial)
2497 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2498 sizeof(struct MR_LD_VF_AFFILIATION));
2499 else {
2500 new_affiliation =
2501 dma_alloc_coherent(&instance->pdev->dev,
2502 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2503 &new_affiliation_h, GFP_KERNEL);
2504 if (!new_affiliation) {
2505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2506 "memory for new affiliation for scsi%d\n",
2507 instance->host->host_no);
2508 megasas_return_cmd(instance, cmd);
2509 return -ENOMEM;
2510 }
2511 }
2512
2513 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2514
2515 dcmd->cmd = MFI_CMD_DCMD;
2516 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2517 dcmd->sge_count = 1;
2518 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2519 dcmd->timeout = 0;
2520 dcmd->pad_0 = 0;
2521 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2522 sizeof(struct MR_LD_VF_AFFILIATION));
2523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2524
2525 if (initial)
2526 dcmd->sgl.sge32[0].phys_addr =
2527 cpu_to_le32(instance->vf_affiliation_h);
2528 else
2529 dcmd->sgl.sge32[0].phys_addr =
2530 cpu_to_le32(new_affiliation_h);
2531
2532 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2533 sizeof(struct MR_LD_VF_AFFILIATION));
2534
2535 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2536 "scsi%d\n", instance->host->host_no);
2537
2538
2539 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2540 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2541 " failed with status 0x%x for scsi%d\n",
2542 dcmd->cmd_status, instance->host->host_no);
2543 retval = 1; /* Do a scan if we couldn't get affiliation */
2544 goto out;
2545 }
2546
2547 if (!initial) {
2548 if (!new_affiliation->ldCount) {
2549 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2550 "affiliation for passive path for scsi%d\n",
2551 instance->host->host_no);
2552 retval = 1;
2553 goto out;
2554 }
2555 newmap = new_affiliation->map;
2556 savedmap = instance->vf_affiliation->map;
2557 thisVf = new_affiliation->thisVf;
2558 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2559 found = 0;
2560 for (j = 0; j < instance->vf_affiliation->ldCount;
2561 j++) {
2562 if (newmap->ref.targetId ==
2563 savedmap->ref.targetId) {
2564 found = 1;
2565 if (newmap->policy[thisVf] !=
2566 savedmap->policy[thisVf]) {
2567 doscan = 1;
2568 goto out;
2569 }
2570 }
2571 savedmap = (struct MR_LD_VF_MAP *)
2572 ((unsigned char *)savedmap +
2573 savedmap->size);
2574 }
2575 if (!found && newmap->policy[thisVf] !=
2576 MR_LD_ACCESS_HIDDEN) {
2577 doscan = 1;
2578 goto out;
2579 }
2580 newmap = (struct MR_LD_VF_MAP *)
2581 ((unsigned char *)newmap + newmap->size);
2582 }
2583
2584 newmap = new_affiliation->map;
2585 savedmap = instance->vf_affiliation->map;
2586
2587 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2588 found = 0;
2589 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2590 if (savedmap->ref.targetId ==
2591 newmap->ref.targetId) {
2592 found = 1;
2593 if (savedmap->policy[thisVf] !=
2594 newmap->policy[thisVf]) {
2595 doscan = 1;
2596 goto out;
2597 }
2598 }
2599 newmap = (struct MR_LD_VF_MAP *)
2600 ((unsigned char *)newmap +
2601 newmap->size);
2602 }
2603 if (!found && savedmap->policy[thisVf] !=
2604 MR_LD_ACCESS_HIDDEN) {
2605 doscan = 1;
2606 goto out;
2607 }
2608 savedmap = (struct MR_LD_VF_MAP *)
2609 ((unsigned char *)savedmap +
2610 savedmap->size);
2611 }
2612 }
2613 out:
2614 if (doscan) {
2615 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2616 "affiliation for scsi%d\n", instance->host->host_no);
2617 memcpy(instance->vf_affiliation, new_affiliation,
2618 new_affiliation->size);
2619 retval = 1;
2620 }
2621
2622 if (new_affiliation)
2623 dma_free_coherent(&instance->pdev->dev,
2624 (MAX_LOGICAL_DRIVES + 1) *
2625 sizeof(struct MR_LD_VF_AFFILIATION),
2626 new_affiliation, new_affiliation_h);
2627 megasas_return_cmd(instance, cmd);
2628
2629 return retval;
2630 }
2631
2632 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2634 int initial)
2635 {
2636 int retval;
2637
2638 if (instance->PlasmaFW111)
2639 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2640 else
2641 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2642 return retval;
2643 }
2644
2645 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2647 int initial)
2648 {
2649 struct megasas_cmd *cmd;
2650 struct megasas_dcmd_frame *dcmd;
2651 int retval = 0;
2652
2653 cmd = megasas_get_cmd(instance);
2654
2655 if (!cmd) {
2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2657 "Failed to get cmd for scsi%d\n",
2658 instance->host->host_no);
2659 return -ENOMEM;
2660 }
2661
2662 dcmd = &cmd->frame->dcmd;
2663
2664 if (initial) {
2665 instance->hb_host_mem =
2666 dma_alloc_coherent(&instance->pdev->dev,
2667 sizeof(struct MR_CTRL_HB_HOST_MEM),
2668 &instance->hb_host_mem_h,
2669 GFP_KERNEL);
2670 if (!instance->hb_host_mem) {
2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2672 " memory for heartbeat host memory for scsi%d\n",
2673 instance->host->host_no);
2674 retval = -ENOMEM;
2675 goto out;
2676 }
2677 }
2678
2679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2680
2681 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2682 dcmd->cmd = MFI_CMD_DCMD;
2683 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2684 dcmd->sge_count = 1;
2685 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2686 dcmd->timeout = 0;
2687 dcmd->pad_0 = 0;
2688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2690
2691 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2692 sizeof(struct MR_CTRL_HB_HOST_MEM));
2693
2694 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2695 instance->host->host_no);
2696
2697 if ((instance->adapter_type != MFI_SERIES) &&
2698 !instance->mask_interrupts)
2699 retval = megasas_issue_blocked_cmd(instance, cmd,
2700 MEGASAS_ROUTINE_WAIT_TIME_VF);
2701 else
2702 retval = megasas_issue_polled(instance, cmd);
2703
2704 if (retval) {
2705 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2706 "_MEM_ALLOC DCMD %s for scsi%d\n",
2707 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2708 "timed out" : "failed", instance->host->host_no);
2709 retval = 1;
2710 }
2711
2712 out:
2713 megasas_return_cmd(instance, cmd);
2714
2715 return retval;
2716 }
2717
2718 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2720 {
2721 struct megasas_instance *instance =
2722 from_timer(instance, t, sriov_heartbeat_timer);
2723
2724 if (instance->hb_host_mem->HB.fwCounter !=
2725 instance->hb_host_mem->HB.driverCounter) {
2726 instance->hb_host_mem->HB.driverCounter =
2727 instance->hb_host_mem->HB.fwCounter;
2728 mod_timer(&instance->sriov_heartbeat_timer,
2729 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2730 } else {
2731 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2732 "completed for scsi%d\n", instance->host->host_no);
2733 schedule_work(&instance->work_init);
2734 }
2735 }
2736
2737 /**
2738 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2739 * @instance: Adapter soft state
2740 *
2741 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2742 * complete all its outstanding commands. Returns error if one or more IOs
2743 * are pending after this time period. It also marks the controller dead.
2744 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2746 {
2747 int i, sl, outstanding;
2748 u32 reset_index;
2749 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2750 unsigned long flags;
2751 struct list_head clist_local;
2752 struct megasas_cmd *reset_cmd;
2753 u32 fw_state;
2754
2755 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2756 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2757 __func__, __LINE__);
2758 return FAILED;
2759 }
2760
2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762
2763 INIT_LIST_HEAD(&clist_local);
2764 spin_lock_irqsave(&instance->hba_lock, flags);
2765 list_splice_init(&instance->internal_reset_pending_q,
2766 &clist_local);
2767 spin_unlock_irqrestore(&instance->hba_lock, flags);
2768
2769 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2770 for (i = 0; i < wait_time; i++) {
2771 msleep(1000);
2772 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2773 break;
2774 }
2775
2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2778 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2779 return FAILED;
2780 }
2781
2782 reset_index = 0;
2783 while (!list_empty(&clist_local)) {
2784 reset_cmd = list_entry((&clist_local)->next,
2785 struct megasas_cmd, list);
2786 list_del_init(&reset_cmd->list);
2787 if (reset_cmd->scmd) {
2788 reset_cmd->scmd->result = DID_REQUEUE << 16;
2789 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2790 reset_index, reset_cmd,
2791 reset_cmd->scmd->cmnd[0]);
2792
2793 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2794 megasas_return_cmd(instance, reset_cmd);
2795 } else if (reset_cmd->sync_cmd) {
2796 dev_notice(&instance->pdev->dev, "%p synch cmds"
2797 "reset queue\n",
2798 reset_cmd);
2799
2800 reset_cmd->cmd_status_drv = DCMD_INIT;
2801 instance->instancet->fire_cmd(instance,
2802 reset_cmd->frame_phys_addr,
2803 0, instance->reg_set);
2804 } else {
2805 dev_notice(&instance->pdev->dev, "%p unexpected"
2806 "cmds lst\n",
2807 reset_cmd);
2808 }
2809 reset_index++;
2810 }
2811
2812 return SUCCESS;
2813 }
2814
2815 for (i = 0; i < resetwaittime; i++) {
2816 outstanding = atomic_read(&instance->fw_outstanding);
2817
2818 if (!outstanding)
2819 break;
2820
2821 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2822 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2823 "commands to complete\n",i,outstanding);
2824 /*
2825 * Call cmd completion routine. Cmd to be
2826 * be completed directly without depending on isr.
2827 */
2828 megasas_complete_cmd_dpc((unsigned long)instance);
2829 }
2830
2831 msleep(1000);
2832 }
2833
2834 i = 0;
2835 outstanding = atomic_read(&instance->fw_outstanding);
2836 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2837
2838 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2839 goto no_outstanding;
2840
2841 if (instance->disableOnlineCtrlReset)
2842 goto kill_hba_and_failed;
2843 do {
2844 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2845 dev_info(&instance->pdev->dev,
2846 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2847 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2848 if (i == 3)
2849 goto kill_hba_and_failed;
2850 megasas_do_ocr(instance);
2851
2852 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2853 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2854 __func__, __LINE__);
2855 return FAILED;
2856 }
2857 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2858 __func__, __LINE__);
2859
2860 for (sl = 0; sl < 10; sl++)
2861 msleep(500);
2862
2863 outstanding = atomic_read(&instance->fw_outstanding);
2864
2865 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2866 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2867 goto no_outstanding;
2868 }
2869 i++;
2870 } while (i <= 3);
2871
2872 no_outstanding:
2873
2874 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2875 __func__, __LINE__);
2876 return SUCCESS;
2877
2878 kill_hba_and_failed:
2879
2880 /* Reset not supported, kill adapter */
2881 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2882 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2883 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2884 atomic_read(&instance->fw_outstanding));
2885 megasas_dump_pending_frames(instance);
2886 megaraid_sas_kill_hba(instance);
2887
2888 return FAILED;
2889 }
2890
2891 /**
2892 * megasas_generic_reset - Generic reset routine
2893 * @scmd: Mid-layer SCSI command
2894 *
2895 * This routine implements a generic reset handler for device, bus and host
2896 * reset requests. Device, bus and host specific reset handlers can use this
2897 * function after they do their specific tasks.
2898 */
megasas_generic_reset(struct scsi_cmnd * scmd)2899 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2900 {
2901 int ret_val;
2902 struct megasas_instance *instance;
2903
2904 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2905
2906 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2907 scmd->cmnd[0], scmd->retries);
2908
2909 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2910 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2911 return FAILED;
2912 }
2913
2914 ret_val = megasas_wait_for_outstanding(instance);
2915 if (ret_val == SUCCESS)
2916 dev_notice(&instance->pdev->dev, "reset successful\n");
2917 else
2918 dev_err(&instance->pdev->dev, "failed to do reset\n");
2919
2920 return ret_val;
2921 }
2922
2923 /**
2924 * megasas_reset_timer - quiesce the adapter if required
2925 * @scmd: scsi cmnd
2926 *
2927 * Sets the FW busy flag and reduces the host->can_queue if the
2928 * cmd has not been completed within the timeout period.
2929 */
2930 static enum
megasas_reset_timer(struct scsi_cmnd * scmd)2931 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2932 {
2933 struct megasas_instance *instance;
2934 unsigned long flags;
2935
2936 if (time_after(jiffies, scmd->jiffies_at_alloc +
2937 (scmd_timeout * 2) * HZ)) {
2938 return BLK_EH_DONE;
2939 }
2940
2941 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2942 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2943 /* FW is busy, throttle IO */
2944 spin_lock_irqsave(instance->host->host_lock, flags);
2945
2946 instance->host->can_queue = instance->throttlequeuedepth;
2947 instance->last_time = jiffies;
2948 instance->flag |= MEGASAS_FW_BUSY;
2949
2950 spin_unlock_irqrestore(instance->host->host_lock, flags);
2951 }
2952 return BLK_EH_RESET_TIMER;
2953 }
2954
2955 /**
2956 * megasas_dump - This function will print hexdump of provided buffer.
2957 * @buf: Buffer to be dumped
2958 * @sz: Size in bytes
2959 * @format: Different formats of dumping e.g. format=n will
2960 * cause only 'n' 32 bit words to be dumped in a single
2961 * line.
2962 */
2963 inline void
megasas_dump(void * buf,int sz,int format)2964 megasas_dump(void *buf, int sz, int format)
2965 {
2966 int i;
2967 __le32 *buf_loc = (__le32 *)buf;
2968
2969 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2970 if ((i % format) == 0) {
2971 if (i != 0)
2972 printk(KERN_CONT "\n");
2973 printk(KERN_CONT "%08x: ", (i * 4));
2974 }
2975 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2976 }
2977 printk(KERN_CONT "\n");
2978 }
2979
2980 /**
2981 * megasas_dump_reg_set - This function will print hexdump of register set
2982 * @reg_set: Register set to be dumped
2983 */
2984 inline void
megasas_dump_reg_set(void __iomem * reg_set)2985 megasas_dump_reg_set(void __iomem *reg_set)
2986 {
2987 unsigned int i, sz = 256;
2988 u32 __iomem *reg = (u32 __iomem *)reg_set;
2989
2990 for (i = 0; i < (sz / sizeof(u32)); i++)
2991 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2992 }
2993
2994 /**
2995 * megasas_dump_fusion_io - This function will print key details
2996 * of SCSI IO
2997 * @scmd: SCSI command pointer of SCSI IO
2998 */
2999 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3000 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3001 {
3002 struct megasas_cmd_fusion *cmd;
3003 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3004 struct megasas_instance *instance;
3005
3006 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
3007 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3008
3009 scmd_printk(KERN_INFO, scmd,
3010 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3011 scmd, scmd->retries, scmd->allowed);
3012 scsi_print_command(scmd);
3013
3014 if (cmd) {
3015 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3016 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3017 scmd_printk(KERN_INFO, scmd,
3018 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3019 req_desc->SCSIIO.RequestFlags,
3020 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3021 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3022
3023 printk(KERN_INFO "IO request frame:\n");
3024 megasas_dump(cmd->io_request,
3025 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3026 printk(KERN_INFO "Chain frame:\n");
3027 megasas_dump(cmd->sg_frame,
3028 instance->max_chain_frame_sz, 8);
3029 }
3030
3031 }
3032
3033 /*
3034 * megasas_dump_sys_regs - This function will dump system registers through
3035 * sysfs.
3036 * @reg_set: Pointer to System register set.
3037 * @buf: Buffer to which output is to be written.
3038 * @return: Number of bytes written to buffer.
3039 */
3040 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3041 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3042 {
3043 unsigned int i, sz = 256;
3044 int bytes_wrote = 0;
3045 char *loc = (char *)buf;
3046 u32 __iomem *reg = (u32 __iomem *)reg_set;
3047
3048 for (i = 0; i < sz / sizeof(u32); i++) {
3049 bytes_wrote += scnprintf(loc + bytes_wrote,
3050 PAGE_SIZE - bytes_wrote,
3051 "%08x: %08x\n", (i * 4),
3052 readl(®[i]));
3053 }
3054 return bytes_wrote;
3055 }
3056
3057 /**
3058 * megasas_reset_bus_host - Bus & host reset handler entry point
3059 * @scmd: Mid-layer SCSI command
3060 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3061 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3062 {
3063 int ret;
3064 struct megasas_instance *instance;
3065
3066 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3067
3068 scmd_printk(KERN_INFO, scmd,
3069 "OCR is requested due to IO timeout!!\n");
3070
3071 scmd_printk(KERN_INFO, scmd,
3072 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3073 scmd->device->host->shost_state,
3074 scsi_host_busy(scmd->device->host),
3075 atomic_read(&instance->fw_outstanding));
3076 /*
3077 * First wait for all commands to complete
3078 */
3079 if (instance->adapter_type == MFI_SERIES) {
3080 ret = megasas_generic_reset(scmd);
3081 } else {
3082 megasas_dump_fusion_io(scmd);
3083 ret = megasas_reset_fusion(scmd->device->host,
3084 SCSIIO_TIMEOUT_OCR);
3085 }
3086
3087 return ret;
3088 }
3089
3090 /**
3091 * megasas_task_abort - Issues task abort request to firmware
3092 * (supported only for fusion adapters)
3093 * @scmd: SCSI command pointer
3094 */
megasas_task_abort(struct scsi_cmnd * scmd)3095 static int megasas_task_abort(struct scsi_cmnd *scmd)
3096 {
3097 int ret;
3098 struct megasas_instance *instance;
3099
3100 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3101
3102 if (instance->adapter_type != MFI_SERIES)
3103 ret = megasas_task_abort_fusion(scmd);
3104 else {
3105 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3106 ret = FAILED;
3107 }
3108
3109 return ret;
3110 }
3111
3112 /**
3113 * megasas_reset_target: Issues target reset request to firmware
3114 * (supported only for fusion adapters)
3115 * @scmd: SCSI command pointer
3116 */
megasas_reset_target(struct scsi_cmnd * scmd)3117 static int megasas_reset_target(struct scsi_cmnd *scmd)
3118 {
3119 int ret;
3120 struct megasas_instance *instance;
3121
3122 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3123
3124 if (instance->adapter_type != MFI_SERIES)
3125 ret = megasas_reset_target_fusion(scmd);
3126 else {
3127 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3128 ret = FAILED;
3129 }
3130
3131 return ret;
3132 }
3133
3134 /**
3135 * megasas_bios_param - Returns disk geometry for a disk
3136 * @sdev: device handle
3137 * @bdev: block device
3138 * @capacity: drive capacity
3139 * @geom: geometry parameters
3140 */
3141 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3142 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3143 sector_t capacity, int geom[])
3144 {
3145 int heads;
3146 int sectors;
3147 sector_t cylinders;
3148 unsigned long tmp;
3149
3150 /* Default heads (64) & sectors (32) */
3151 heads = 64;
3152 sectors = 32;
3153
3154 tmp = heads * sectors;
3155 cylinders = capacity;
3156
3157 sector_div(cylinders, tmp);
3158
3159 /*
3160 * Handle extended translation size for logical drives > 1Gb
3161 */
3162
3163 if (capacity >= 0x200000) {
3164 heads = 255;
3165 sectors = 63;
3166 tmp = heads*sectors;
3167 cylinders = capacity;
3168 sector_div(cylinders, tmp);
3169 }
3170
3171 geom[0] = heads;
3172 geom[1] = sectors;
3173 geom[2] = cylinders;
3174
3175 return 0;
3176 }
3177
megasas_map_queues(struct Scsi_Host * shost)3178 static int megasas_map_queues(struct Scsi_Host *shost)
3179 {
3180 struct megasas_instance *instance;
3181 int qoff = 0, offset;
3182 struct blk_mq_queue_map *map;
3183
3184 instance = (struct megasas_instance *)shost->hostdata;
3185
3186 if (shost->nr_hw_queues == 1)
3187 return 0;
3188
3189 offset = instance->low_latency_index_start;
3190
3191 /* Setup Default hctx */
3192 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3193 map->nr_queues = instance->msix_vectors - offset;
3194 map->queue_offset = 0;
3195 blk_mq_pci_map_queues(map, instance->pdev, offset);
3196 qoff += map->nr_queues;
3197 offset += map->nr_queues;
3198
3199 /* we never use READ queue, so can't cheat blk-mq */
3200 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3201
3202 /* Setup Poll hctx */
3203 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3204 map->nr_queues = instance->iopoll_q_count;
3205 if (map->nr_queues) {
3206 /*
3207 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3208 * affinity), so use the regular blk-mq cpu mapping
3209 */
3210 map->queue_offset = qoff;
3211 blk_mq_map_queues(map);
3212 }
3213
3214 return 0;
3215 }
3216
3217 static void megasas_aen_polling(struct work_struct *work);
3218
3219 /**
3220 * megasas_service_aen - Processes an event notification
3221 * @instance: Adapter soft state
3222 * @cmd: AEN command completed by the ISR
3223 *
3224 * For AEN, driver sends a command down to FW that is held by the FW till an
3225 * event occurs. When an event of interest occurs, FW completes the command
3226 * that it was previously holding.
3227 *
3228 * This routines sends SIGIO signal to processes that have registered with the
3229 * driver for AEN.
3230 */
3231 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3232 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3233 {
3234 unsigned long flags;
3235
3236 /*
3237 * Don't signal app if it is just an aborted previously registered aen
3238 */
3239 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3240 spin_lock_irqsave(&poll_aen_lock, flags);
3241 megasas_poll_wait_aen = 1;
3242 spin_unlock_irqrestore(&poll_aen_lock, flags);
3243 wake_up(&megasas_poll_wait);
3244 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3245 }
3246 else
3247 cmd->abort_aen = 0;
3248
3249 instance->aen_cmd = NULL;
3250
3251 megasas_return_cmd(instance, cmd);
3252
3253 if ((instance->unload == 0) &&
3254 ((instance->issuepend_done == 1))) {
3255 struct megasas_aen_event *ev;
3256
3257 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3258 if (!ev) {
3259 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3260 } else {
3261 ev->instance = instance;
3262 instance->ev = ev;
3263 INIT_DELAYED_WORK(&ev->hotplug_work,
3264 megasas_aen_polling);
3265 schedule_delayed_work(&ev->hotplug_work, 0);
3266 }
3267 }
3268 }
3269
3270 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3271 fw_crash_buffer_store(struct device *cdev,
3272 struct device_attribute *attr, const char *buf, size_t count)
3273 {
3274 struct Scsi_Host *shost = class_to_shost(cdev);
3275 struct megasas_instance *instance =
3276 (struct megasas_instance *) shost->hostdata;
3277 int val = 0;
3278
3279 if (kstrtoint(buf, 0, &val) != 0)
3280 return -EINVAL;
3281
3282 mutex_lock(&instance->crashdump_lock);
3283 instance->fw_crash_buffer_offset = val;
3284 mutex_unlock(&instance->crashdump_lock);
3285 return strlen(buf);
3286 }
3287
3288 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3289 fw_crash_buffer_show(struct device *cdev,
3290 struct device_attribute *attr, char *buf)
3291 {
3292 struct Scsi_Host *shost = class_to_shost(cdev);
3293 struct megasas_instance *instance =
3294 (struct megasas_instance *) shost->hostdata;
3295 u32 size;
3296 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3297 unsigned long chunk_left_bytes;
3298 unsigned long src_addr;
3299 u32 buff_offset;
3300
3301 mutex_lock(&instance->crashdump_lock);
3302 buff_offset = instance->fw_crash_buffer_offset;
3303 if (!instance->crash_dump_buf ||
3304 !((instance->fw_crash_state == AVAILABLE) ||
3305 (instance->fw_crash_state == COPYING))) {
3306 dev_err(&instance->pdev->dev,
3307 "Firmware crash dump is not available\n");
3308 mutex_unlock(&instance->crashdump_lock);
3309 return -EINVAL;
3310 }
3311
3312 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3313 dev_err(&instance->pdev->dev,
3314 "Firmware crash dump offset is out of range\n");
3315 mutex_unlock(&instance->crashdump_lock);
3316 return 0;
3317 }
3318
3319 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3320 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3321 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3322 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3323
3324 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3325 (buff_offset % dmachunk);
3326 memcpy(buf, (void *)src_addr, size);
3327 mutex_unlock(&instance->crashdump_lock);
3328
3329 return size;
3330 }
3331
3332 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3333 fw_crash_buffer_size_show(struct device *cdev,
3334 struct device_attribute *attr, char *buf)
3335 {
3336 struct Scsi_Host *shost = class_to_shost(cdev);
3337 struct megasas_instance *instance =
3338 (struct megasas_instance *) shost->hostdata;
3339
3340 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3341 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3342 }
3343
3344 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3345 fw_crash_state_store(struct device *cdev,
3346 struct device_attribute *attr, const char *buf, size_t count)
3347 {
3348 struct Scsi_Host *shost = class_to_shost(cdev);
3349 struct megasas_instance *instance =
3350 (struct megasas_instance *) shost->hostdata;
3351 int val = 0;
3352
3353 if (kstrtoint(buf, 0, &val) != 0)
3354 return -EINVAL;
3355
3356 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3357 dev_err(&instance->pdev->dev, "application updates invalid "
3358 "firmware crash state\n");
3359 return -EINVAL;
3360 }
3361
3362 instance->fw_crash_state = val;
3363
3364 if ((val == COPIED) || (val == COPY_ERROR)) {
3365 mutex_lock(&instance->crashdump_lock);
3366 megasas_free_host_crash_buffer(instance);
3367 mutex_unlock(&instance->crashdump_lock);
3368 if (val == COPY_ERROR)
3369 dev_info(&instance->pdev->dev, "application failed to "
3370 "copy Firmware crash dump\n");
3371 else
3372 dev_info(&instance->pdev->dev, "Firmware crash dump "
3373 "copied successfully\n");
3374 }
3375 return strlen(buf);
3376 }
3377
3378 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3379 fw_crash_state_show(struct device *cdev,
3380 struct device_attribute *attr, char *buf)
3381 {
3382 struct Scsi_Host *shost = class_to_shost(cdev);
3383 struct megasas_instance *instance =
3384 (struct megasas_instance *) shost->hostdata;
3385
3386 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3387 }
3388
3389 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3390 page_size_show(struct device *cdev,
3391 struct device_attribute *attr, char *buf)
3392 {
3393 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3394 }
3395
3396 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3397 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3398 char *buf)
3399 {
3400 struct Scsi_Host *shost = class_to_shost(cdev);
3401 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3402
3403 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3404 }
3405
3406 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3407 fw_cmds_outstanding_show(struct device *cdev,
3408 struct device_attribute *attr, char *buf)
3409 {
3410 struct Scsi_Host *shost = class_to_shost(cdev);
3411 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3412
3413 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3414 }
3415
3416 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3417 enable_sdev_max_qd_show(struct device *cdev,
3418 struct device_attribute *attr, char *buf)
3419 {
3420 struct Scsi_Host *shost = class_to_shost(cdev);
3421 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3422
3423 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3424 }
3425
3426 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3427 enable_sdev_max_qd_store(struct device *cdev,
3428 struct device_attribute *attr, const char *buf, size_t count)
3429 {
3430 struct Scsi_Host *shost = class_to_shost(cdev);
3431 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3432 u32 val = 0;
3433 bool is_target_prop;
3434 int ret_target_prop = DCMD_FAILED;
3435 struct scsi_device *sdev;
3436
3437 if (kstrtou32(buf, 0, &val) != 0) {
3438 pr_err("megasas: could not set enable_sdev_max_qd\n");
3439 return -EINVAL;
3440 }
3441
3442 mutex_lock(&instance->reset_mutex);
3443 if (val)
3444 instance->enable_sdev_max_qd = true;
3445 else
3446 instance->enable_sdev_max_qd = false;
3447
3448 shost_for_each_device(sdev, shost) {
3449 ret_target_prop = megasas_get_target_prop(instance, sdev);
3450 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3451 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3452 }
3453 mutex_unlock(&instance->reset_mutex);
3454
3455 return strlen(buf);
3456 }
3457
3458 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3459 dump_system_regs_show(struct device *cdev,
3460 struct device_attribute *attr, char *buf)
3461 {
3462 struct Scsi_Host *shost = class_to_shost(cdev);
3463 struct megasas_instance *instance =
3464 (struct megasas_instance *)shost->hostdata;
3465
3466 return megasas_dump_sys_regs(instance->reg_set, buf);
3467 }
3468
3469 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3470 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3471 char *buf)
3472 {
3473 struct Scsi_Host *shost = class_to_shost(cdev);
3474 struct megasas_instance *instance =
3475 (struct megasas_instance *)shost->hostdata;
3476
3477 return snprintf(buf, PAGE_SIZE, "%ld\n",
3478 (unsigned long)instance->map_id);
3479 }
3480
3481 static DEVICE_ATTR_RW(fw_crash_buffer);
3482 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3483 static DEVICE_ATTR_RW(fw_crash_state);
3484 static DEVICE_ATTR_RO(page_size);
3485 static DEVICE_ATTR_RO(ldio_outstanding);
3486 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3487 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3488 static DEVICE_ATTR_RO(dump_system_regs);
3489 static DEVICE_ATTR_RO(raid_map_id);
3490
3491 static struct device_attribute *megaraid_host_attrs[] = {
3492 &dev_attr_fw_crash_buffer_size,
3493 &dev_attr_fw_crash_buffer,
3494 &dev_attr_fw_crash_state,
3495 &dev_attr_page_size,
3496 &dev_attr_ldio_outstanding,
3497 &dev_attr_fw_cmds_outstanding,
3498 &dev_attr_enable_sdev_max_qd,
3499 &dev_attr_dump_system_regs,
3500 &dev_attr_raid_map_id,
3501 NULL,
3502 };
3503
3504 /*
3505 * Scsi host template for megaraid_sas driver
3506 */
3507 static struct scsi_host_template megasas_template = {
3508
3509 .module = THIS_MODULE,
3510 .name = "Avago SAS based MegaRAID driver",
3511 .proc_name = "megaraid_sas",
3512 .slave_configure = megasas_slave_configure,
3513 .slave_alloc = megasas_slave_alloc,
3514 .slave_destroy = megasas_slave_destroy,
3515 .queuecommand = megasas_queue_command,
3516 .eh_target_reset_handler = megasas_reset_target,
3517 .eh_abort_handler = megasas_task_abort,
3518 .eh_host_reset_handler = megasas_reset_bus_host,
3519 .eh_timed_out = megasas_reset_timer,
3520 .shost_attrs = megaraid_host_attrs,
3521 .bios_param = megasas_bios_param,
3522 .map_queues = megasas_map_queues,
3523 .mq_poll = megasas_blk_mq_poll,
3524 .change_queue_depth = scsi_change_queue_depth,
3525 .max_segment_size = 0xffffffff,
3526 };
3527
3528 /**
3529 * megasas_complete_int_cmd - Completes an internal command
3530 * @instance: Adapter soft state
3531 * @cmd: Command to be completed
3532 *
3533 * The megasas_issue_blocked_cmd() function waits for a command to complete
3534 * after it issues a command. This function wakes up that waiting routine by
3535 * calling wake_up() on the wait queue.
3536 */
3537 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3538 megasas_complete_int_cmd(struct megasas_instance *instance,
3539 struct megasas_cmd *cmd)
3540 {
3541 if (cmd->cmd_status_drv == DCMD_INIT)
3542 cmd->cmd_status_drv =
3543 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3544 DCMD_SUCCESS : DCMD_FAILED;
3545
3546 wake_up(&instance->int_cmd_wait_q);
3547 }
3548
3549 /**
3550 * megasas_complete_abort - Completes aborting a command
3551 * @instance: Adapter soft state
3552 * @cmd: Cmd that was issued to abort another cmd
3553 *
3554 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3555 * after it issues an abort on a previously issued command. This function
3556 * wakes up all functions waiting on the same wait queue.
3557 */
3558 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3559 megasas_complete_abort(struct megasas_instance *instance,
3560 struct megasas_cmd *cmd)
3561 {
3562 if (cmd->sync_cmd) {
3563 cmd->sync_cmd = 0;
3564 cmd->cmd_status_drv = DCMD_SUCCESS;
3565 wake_up(&instance->abort_cmd_wait_q);
3566 }
3567 }
3568
3569 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3570 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3571 {
3572 uint i;
3573
3574 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3575 if (instance->ld_ids_prev[i] != 0xff &&
3576 instance->ld_ids_from_raidmap[i] == 0xff) {
3577 if (megasas_dbg_lvl & LD_PD_DEBUG)
3578 dev_info(&instance->pdev->dev,
3579 "LD target ID %d removed from RAID map\n", i);
3580 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3581 }
3582 }
3583 }
3584
3585 /**
3586 * megasas_complete_cmd - Completes a command
3587 * @instance: Adapter soft state
3588 * @cmd: Command to be completed
3589 * @alt_status: If non-zero, use this value as status to
3590 * SCSI mid-layer instead of the value returned
3591 * by the FW. This should be used if caller wants
3592 * an alternate status (as in the case of aborted
3593 * commands)
3594 */
3595 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3596 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3597 u8 alt_status)
3598 {
3599 int exception = 0;
3600 struct megasas_header *hdr = &cmd->frame->hdr;
3601 unsigned long flags;
3602 struct fusion_context *fusion = instance->ctrl_context;
3603 u32 opcode, status;
3604
3605 /* flag for the retry reset */
3606 cmd->retry_for_fw_reset = 0;
3607
3608 if (cmd->scmd)
3609 cmd->scmd->SCp.ptr = NULL;
3610
3611 switch (hdr->cmd) {
3612 case MFI_CMD_INVALID:
3613 /* Some older 1068 controller FW may keep a pended
3614 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3615 when booting the kdump kernel. Ignore this command to
3616 prevent a kernel panic on shutdown of the kdump kernel. */
3617 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3618 "completed\n");
3619 dev_warn(&instance->pdev->dev, "If you have a controller "
3620 "other than PERC5, please upgrade your firmware\n");
3621 break;
3622 case MFI_CMD_PD_SCSI_IO:
3623 case MFI_CMD_LD_SCSI_IO:
3624
3625 /*
3626 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3627 * issued either through an IO path or an IOCTL path. If it
3628 * was via IOCTL, we will send it to internal completion.
3629 */
3630 if (cmd->sync_cmd) {
3631 cmd->sync_cmd = 0;
3632 megasas_complete_int_cmd(instance, cmd);
3633 break;
3634 }
3635 fallthrough;
3636
3637 case MFI_CMD_LD_READ:
3638 case MFI_CMD_LD_WRITE:
3639
3640 if (alt_status) {
3641 cmd->scmd->result = alt_status << 16;
3642 exception = 1;
3643 }
3644
3645 if (exception) {
3646
3647 atomic_dec(&instance->fw_outstanding);
3648
3649 scsi_dma_unmap(cmd->scmd);
3650 cmd->scmd->scsi_done(cmd->scmd);
3651 megasas_return_cmd(instance, cmd);
3652
3653 break;
3654 }
3655
3656 switch (hdr->cmd_status) {
3657
3658 case MFI_STAT_OK:
3659 cmd->scmd->result = DID_OK << 16;
3660 break;
3661
3662 case MFI_STAT_SCSI_IO_FAILED:
3663 case MFI_STAT_LD_INIT_IN_PROGRESS:
3664 cmd->scmd->result =
3665 (DID_ERROR << 16) | hdr->scsi_status;
3666 break;
3667
3668 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3669
3670 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3671
3672 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3673 memset(cmd->scmd->sense_buffer, 0,
3674 SCSI_SENSE_BUFFERSIZE);
3675 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3676 hdr->sense_len);
3677 }
3678
3679 break;
3680
3681 case MFI_STAT_LD_OFFLINE:
3682 case MFI_STAT_DEVICE_NOT_FOUND:
3683 cmd->scmd->result = DID_BAD_TARGET << 16;
3684 break;
3685
3686 default:
3687 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3688 hdr->cmd_status);
3689 cmd->scmd->result = DID_ERROR << 16;
3690 break;
3691 }
3692
3693 atomic_dec(&instance->fw_outstanding);
3694
3695 scsi_dma_unmap(cmd->scmd);
3696 cmd->scmd->scsi_done(cmd->scmd);
3697 megasas_return_cmd(instance, cmd);
3698
3699 break;
3700
3701 case MFI_CMD_SMP:
3702 case MFI_CMD_STP:
3703 case MFI_CMD_NVME:
3704 case MFI_CMD_TOOLBOX:
3705 megasas_complete_int_cmd(instance, cmd);
3706 break;
3707
3708 case MFI_CMD_DCMD:
3709 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3710 /* Check for LD map update */
3711 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3712 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3713 fusion->fast_path_io = 0;
3714 spin_lock_irqsave(instance->host->host_lock, flags);
3715 status = cmd->frame->hdr.cmd_status;
3716 instance->map_update_cmd = NULL;
3717 if (status != MFI_STAT_OK) {
3718 if (status != MFI_STAT_NOT_FOUND)
3719 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3720 cmd->frame->hdr.cmd_status);
3721 else {
3722 megasas_return_cmd(instance, cmd);
3723 spin_unlock_irqrestore(
3724 instance->host->host_lock,
3725 flags);
3726 break;
3727 }
3728 }
3729
3730 megasas_return_cmd(instance, cmd);
3731
3732 /*
3733 * Set fast path IO to ZERO.
3734 * Validate Map will set proper value.
3735 * Meanwhile all IOs will go as LD IO.
3736 */
3737 if (status == MFI_STAT_OK &&
3738 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3739 instance->map_id++;
3740 fusion->fast_path_io = 1;
3741 } else {
3742 fusion->fast_path_io = 0;
3743 }
3744
3745 if (instance->adapter_type >= INVADER_SERIES)
3746 megasas_set_ld_removed_by_fw(instance);
3747
3748 megasas_sync_map_info(instance);
3749 spin_unlock_irqrestore(instance->host->host_lock,
3750 flags);
3751
3752 break;
3753 }
3754 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3755 opcode == MR_DCMD_CTRL_EVENT_GET) {
3756 spin_lock_irqsave(&poll_aen_lock, flags);
3757 megasas_poll_wait_aen = 0;
3758 spin_unlock_irqrestore(&poll_aen_lock, flags);
3759 }
3760
3761 /* FW has an updated PD sequence */
3762 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3763 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3764
3765 spin_lock_irqsave(instance->host->host_lock, flags);
3766 status = cmd->frame->hdr.cmd_status;
3767 instance->jbod_seq_cmd = NULL;
3768 megasas_return_cmd(instance, cmd);
3769
3770 if (status == MFI_STAT_OK) {
3771 instance->pd_seq_map_id++;
3772 /* Re-register a pd sync seq num cmd */
3773 if (megasas_sync_pd_seq_num(instance, true))
3774 instance->use_seqnum_jbod_fp = false;
3775 } else
3776 instance->use_seqnum_jbod_fp = false;
3777
3778 spin_unlock_irqrestore(instance->host->host_lock, flags);
3779 break;
3780 }
3781
3782 /*
3783 * See if got an event notification
3784 */
3785 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3786 megasas_service_aen(instance, cmd);
3787 else
3788 megasas_complete_int_cmd(instance, cmd);
3789
3790 break;
3791
3792 case MFI_CMD_ABORT:
3793 /*
3794 * Cmd issued to abort another cmd returned
3795 */
3796 megasas_complete_abort(instance, cmd);
3797 break;
3798
3799 default:
3800 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3801 hdr->cmd);
3802 megasas_complete_int_cmd(instance, cmd);
3803 break;
3804 }
3805 }
3806
3807 /**
3808 * megasas_issue_pending_cmds_again - issue all pending cmds
3809 * in FW again because of the fw reset
3810 * @instance: Adapter soft state
3811 */
3812 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3813 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3814 {
3815 struct megasas_cmd *cmd;
3816 struct list_head clist_local;
3817 union megasas_evt_class_locale class_locale;
3818 unsigned long flags;
3819 u32 seq_num;
3820
3821 INIT_LIST_HEAD(&clist_local);
3822 spin_lock_irqsave(&instance->hba_lock, flags);
3823 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3824 spin_unlock_irqrestore(&instance->hba_lock, flags);
3825
3826 while (!list_empty(&clist_local)) {
3827 cmd = list_entry((&clist_local)->next,
3828 struct megasas_cmd, list);
3829 list_del_init(&cmd->list);
3830
3831 if (cmd->sync_cmd || cmd->scmd) {
3832 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3833 "detected to be pending while HBA reset\n",
3834 cmd, cmd->scmd, cmd->sync_cmd);
3835
3836 cmd->retry_for_fw_reset++;
3837
3838 if (cmd->retry_for_fw_reset == 3) {
3839 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3840 "was tried multiple times during reset."
3841 "Shutting down the HBA\n",
3842 cmd, cmd->scmd, cmd->sync_cmd);
3843 instance->instancet->disable_intr(instance);
3844 atomic_set(&instance->fw_reset_no_pci_access, 1);
3845 megaraid_sas_kill_hba(instance);
3846 return;
3847 }
3848 }
3849
3850 if (cmd->sync_cmd == 1) {
3851 if (cmd->scmd) {
3852 dev_notice(&instance->pdev->dev, "unexpected"
3853 "cmd attached to internal command!\n");
3854 }
3855 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3856 "on the internal reset queue,"
3857 "issue it again.\n", cmd);
3858 cmd->cmd_status_drv = DCMD_INIT;
3859 instance->instancet->fire_cmd(instance,
3860 cmd->frame_phys_addr,
3861 0, instance->reg_set);
3862 } else if (cmd->scmd) {
3863 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3864 "detected on the internal queue, issue again.\n",
3865 cmd, cmd->scmd->cmnd[0]);
3866
3867 atomic_inc(&instance->fw_outstanding);
3868 instance->instancet->fire_cmd(instance,
3869 cmd->frame_phys_addr,
3870 cmd->frame_count-1, instance->reg_set);
3871 } else {
3872 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3873 "internal reset defer list while re-issue!!\n",
3874 cmd);
3875 }
3876 }
3877
3878 if (instance->aen_cmd) {
3879 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3880 megasas_return_cmd(instance, instance->aen_cmd);
3881
3882 instance->aen_cmd = NULL;
3883 }
3884
3885 /*
3886 * Initiate AEN (Asynchronous Event Notification)
3887 */
3888 seq_num = instance->last_seq_num;
3889 class_locale.members.reserved = 0;
3890 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3891 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3892
3893 megasas_register_aen(instance, seq_num, class_locale.word);
3894 }
3895
3896 /*
3897 * Move the internal reset pending commands to a deferred queue.
3898 *
3899 * We move the commands pending at internal reset time to a
3900 * pending queue. This queue would be flushed after successful
3901 * completion of the internal reset sequence. if the internal reset
3902 * did not complete in time, the kernel reset handler would flush
3903 * these commands.
3904 */
3905 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3906 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3907 {
3908 struct megasas_cmd *cmd;
3909 int i;
3910 u16 max_cmd = instance->max_fw_cmds;
3911 u32 defer_index;
3912 unsigned long flags;
3913
3914 defer_index = 0;
3915 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3916 for (i = 0; i < max_cmd; i++) {
3917 cmd = instance->cmd_list[i];
3918 if (cmd->sync_cmd == 1 || cmd->scmd) {
3919 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3920 "on the defer queue as internal\n",
3921 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3922
3923 if (!list_empty(&cmd->list)) {
3924 dev_notice(&instance->pdev->dev, "ERROR while"
3925 " moving this cmd:%p, %d %p, it was"
3926 "discovered on some list?\n",
3927 cmd, cmd->sync_cmd, cmd->scmd);
3928
3929 list_del_init(&cmd->list);
3930 }
3931 defer_index++;
3932 list_add_tail(&cmd->list,
3933 &instance->internal_reset_pending_q);
3934 }
3935 }
3936 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3937 }
3938
3939
3940 static void
process_fw_state_change_wq(struct work_struct * work)3941 process_fw_state_change_wq(struct work_struct *work)
3942 {
3943 struct megasas_instance *instance =
3944 container_of(work, struct megasas_instance, work_init);
3945 u32 wait;
3946 unsigned long flags;
3947
3948 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3949 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3950 atomic_read(&instance->adprecovery));
3951 return ;
3952 }
3953
3954 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3955 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3956 "state, restarting it...\n");
3957
3958 instance->instancet->disable_intr(instance);
3959 atomic_set(&instance->fw_outstanding, 0);
3960
3961 atomic_set(&instance->fw_reset_no_pci_access, 1);
3962 instance->instancet->adp_reset(instance, instance->reg_set);
3963 atomic_set(&instance->fw_reset_no_pci_access, 0);
3964
3965 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3966 "initiating next stage...\n");
3967
3968 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3969 "state 2 starting...\n");
3970
3971 /* waiting for about 20 second before start the second init */
3972 for (wait = 0; wait < 30; wait++) {
3973 msleep(1000);
3974 }
3975
3976 if (megasas_transition_to_ready(instance, 1)) {
3977 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3978
3979 atomic_set(&instance->fw_reset_no_pci_access, 1);
3980 megaraid_sas_kill_hba(instance);
3981 return ;
3982 }
3983
3984 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3985 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3986 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3987 ) {
3988 *instance->consumer = *instance->producer;
3989 } else {
3990 *instance->consumer = 0;
3991 *instance->producer = 0;
3992 }
3993
3994 megasas_issue_init_mfi(instance);
3995
3996 spin_lock_irqsave(&instance->hba_lock, flags);
3997 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3998 spin_unlock_irqrestore(&instance->hba_lock, flags);
3999 instance->instancet->enable_intr(instance);
4000
4001 megasas_issue_pending_cmds_again(instance);
4002 instance->issuepend_done = 1;
4003 }
4004 }
4005
4006 /**
4007 * megasas_deplete_reply_queue - Processes all completed commands
4008 * @instance: Adapter soft state
4009 * @alt_status: Alternate status to be returned to
4010 * SCSI mid-layer instead of the status
4011 * returned by the FW
4012 * Note: this must be called with hba lock held
4013 */
4014 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4015 megasas_deplete_reply_queue(struct megasas_instance *instance,
4016 u8 alt_status)
4017 {
4018 u32 mfiStatus;
4019 u32 fw_state;
4020
4021 if ((mfiStatus = instance->instancet->check_reset(instance,
4022 instance->reg_set)) == 1) {
4023 return IRQ_HANDLED;
4024 }
4025
4026 mfiStatus = instance->instancet->clear_intr(instance);
4027 if (mfiStatus == 0) {
4028 /* Hardware may not set outbound_intr_status in MSI-X mode */
4029 if (!instance->msix_vectors)
4030 return IRQ_NONE;
4031 }
4032
4033 instance->mfiStatus = mfiStatus;
4034
4035 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4036 fw_state = instance->instancet->read_fw_status_reg(
4037 instance) & MFI_STATE_MASK;
4038
4039 if (fw_state != MFI_STATE_FAULT) {
4040 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4041 fw_state);
4042 }
4043
4044 if ((fw_state == MFI_STATE_FAULT) &&
4045 (instance->disableOnlineCtrlReset == 0)) {
4046 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4047
4048 if ((instance->pdev->device ==
4049 PCI_DEVICE_ID_LSI_SAS1064R) ||
4050 (instance->pdev->device ==
4051 PCI_DEVICE_ID_DELL_PERC5) ||
4052 (instance->pdev->device ==
4053 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4054
4055 *instance->consumer =
4056 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4057 }
4058
4059
4060 instance->instancet->disable_intr(instance);
4061 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4062 instance->issuepend_done = 0;
4063
4064 atomic_set(&instance->fw_outstanding, 0);
4065 megasas_internal_reset_defer_cmds(instance);
4066
4067 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4068 fw_state, atomic_read(&instance->adprecovery));
4069
4070 schedule_work(&instance->work_init);
4071 return IRQ_HANDLED;
4072
4073 } else {
4074 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4075 fw_state, instance->disableOnlineCtrlReset);
4076 }
4077 }
4078
4079 tasklet_schedule(&instance->isr_tasklet);
4080 return IRQ_HANDLED;
4081 }
4082
4083 /**
4084 * megasas_isr - isr entry point
4085 * @irq: IRQ number
4086 * @devp: IRQ context address
4087 */
megasas_isr(int irq,void * devp)4088 static irqreturn_t megasas_isr(int irq, void *devp)
4089 {
4090 struct megasas_irq_context *irq_context = devp;
4091 struct megasas_instance *instance = irq_context->instance;
4092 unsigned long flags;
4093 irqreturn_t rc;
4094
4095 if (atomic_read(&instance->fw_reset_no_pci_access))
4096 return IRQ_HANDLED;
4097
4098 spin_lock_irqsave(&instance->hba_lock, flags);
4099 rc = megasas_deplete_reply_queue(instance, DID_OK);
4100 spin_unlock_irqrestore(&instance->hba_lock, flags);
4101
4102 return rc;
4103 }
4104
4105 /**
4106 * megasas_transition_to_ready - Move the FW to READY state
4107 * @instance: Adapter soft state
4108 * @ocr: Adapter reset state
4109 *
4110 * During the initialization, FW passes can potentially be in any one of
4111 * several possible states. If the FW in operational, waiting-for-handshake
4112 * states, driver must take steps to bring it to ready state. Otherwise, it
4113 * has to wait for the ready state.
4114 */
4115 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4116 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4117 {
4118 int i;
4119 u8 max_wait;
4120 u32 fw_state;
4121 u32 abs_state, curr_abs_state;
4122
4123 abs_state = instance->instancet->read_fw_status_reg(instance);
4124 fw_state = abs_state & MFI_STATE_MASK;
4125
4126 if (fw_state != MFI_STATE_READY)
4127 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4128 " state\n");
4129
4130 while (fw_state != MFI_STATE_READY) {
4131
4132 switch (fw_state) {
4133
4134 case MFI_STATE_FAULT:
4135 dev_printk(KERN_ERR, &instance->pdev->dev,
4136 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4137 abs_state & MFI_STATE_FAULT_CODE,
4138 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4139 if (ocr) {
4140 max_wait = MEGASAS_RESET_WAIT_TIME;
4141 break;
4142 } else {
4143 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4144 megasas_dump_reg_set(instance->reg_set);
4145 return -ENODEV;
4146 }
4147
4148 case MFI_STATE_WAIT_HANDSHAKE:
4149 /*
4150 * Set the CLR bit in inbound doorbell
4151 */
4152 if ((instance->pdev->device ==
4153 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4154 (instance->pdev->device ==
4155 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4156 (instance->adapter_type != MFI_SERIES))
4157 writel(
4158 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4159 &instance->reg_set->doorbell);
4160 else
4161 writel(
4162 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4163 &instance->reg_set->inbound_doorbell);
4164
4165 max_wait = MEGASAS_RESET_WAIT_TIME;
4166 break;
4167
4168 case MFI_STATE_BOOT_MESSAGE_PENDING:
4169 if ((instance->pdev->device ==
4170 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4171 (instance->pdev->device ==
4172 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4173 (instance->adapter_type != MFI_SERIES))
4174 writel(MFI_INIT_HOTPLUG,
4175 &instance->reg_set->doorbell);
4176 else
4177 writel(MFI_INIT_HOTPLUG,
4178 &instance->reg_set->inbound_doorbell);
4179
4180 max_wait = MEGASAS_RESET_WAIT_TIME;
4181 break;
4182
4183 case MFI_STATE_OPERATIONAL:
4184 /*
4185 * Bring it to READY state; assuming max wait 10 secs
4186 */
4187 instance->instancet->disable_intr(instance);
4188 if ((instance->pdev->device ==
4189 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4190 (instance->pdev->device ==
4191 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4192 (instance->adapter_type != MFI_SERIES)) {
4193 writel(MFI_RESET_FLAGS,
4194 &instance->reg_set->doorbell);
4195
4196 if (instance->adapter_type != MFI_SERIES) {
4197 for (i = 0; i < (10 * 1000); i += 20) {
4198 if (megasas_readl(
4199 instance,
4200 &instance->
4201 reg_set->
4202 doorbell) & 1)
4203 msleep(20);
4204 else
4205 break;
4206 }
4207 }
4208 } else
4209 writel(MFI_RESET_FLAGS,
4210 &instance->reg_set->inbound_doorbell);
4211
4212 max_wait = MEGASAS_RESET_WAIT_TIME;
4213 break;
4214
4215 case MFI_STATE_UNDEFINED:
4216 /*
4217 * This state should not last for more than 2 seconds
4218 */
4219 max_wait = MEGASAS_RESET_WAIT_TIME;
4220 break;
4221
4222 case MFI_STATE_BB_INIT:
4223 max_wait = MEGASAS_RESET_WAIT_TIME;
4224 break;
4225
4226 case MFI_STATE_FW_INIT:
4227 max_wait = MEGASAS_RESET_WAIT_TIME;
4228 break;
4229
4230 case MFI_STATE_FW_INIT_2:
4231 max_wait = MEGASAS_RESET_WAIT_TIME;
4232 break;
4233
4234 case MFI_STATE_DEVICE_SCAN:
4235 max_wait = MEGASAS_RESET_WAIT_TIME;
4236 break;
4237
4238 case MFI_STATE_FLUSH_CACHE:
4239 max_wait = MEGASAS_RESET_WAIT_TIME;
4240 break;
4241
4242 default:
4243 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4244 fw_state);
4245 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4246 megasas_dump_reg_set(instance->reg_set);
4247 return -ENODEV;
4248 }
4249
4250 /*
4251 * The cur_state should not last for more than max_wait secs
4252 */
4253 for (i = 0; i < max_wait * 50; i++) {
4254 curr_abs_state = instance->instancet->
4255 read_fw_status_reg(instance);
4256
4257 if (abs_state == curr_abs_state) {
4258 msleep(20);
4259 } else
4260 break;
4261 }
4262
4263 /*
4264 * Return error if fw_state hasn't changed after max_wait
4265 */
4266 if (curr_abs_state == abs_state) {
4267 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4268 "in %d secs\n", fw_state, max_wait);
4269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4270 megasas_dump_reg_set(instance->reg_set);
4271 return -ENODEV;
4272 }
4273
4274 abs_state = curr_abs_state;
4275 fw_state = curr_abs_state & MFI_STATE_MASK;
4276 }
4277 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4278
4279 return 0;
4280 }
4281
4282 /**
4283 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4284 * @instance: Adapter soft state
4285 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4286 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4287 {
4288 int i;
4289 u16 max_cmd = instance->max_mfi_cmds;
4290 struct megasas_cmd *cmd;
4291
4292 if (!instance->frame_dma_pool)
4293 return;
4294
4295 /*
4296 * Return all frames to pool
4297 */
4298 for (i = 0; i < max_cmd; i++) {
4299
4300 cmd = instance->cmd_list[i];
4301
4302 if (cmd->frame)
4303 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4304 cmd->frame_phys_addr);
4305
4306 if (cmd->sense)
4307 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4308 cmd->sense_phys_addr);
4309 }
4310
4311 /*
4312 * Now destroy the pool itself
4313 */
4314 dma_pool_destroy(instance->frame_dma_pool);
4315 dma_pool_destroy(instance->sense_dma_pool);
4316
4317 instance->frame_dma_pool = NULL;
4318 instance->sense_dma_pool = NULL;
4319 }
4320
4321 /**
4322 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4323 * @instance: Adapter soft state
4324 *
4325 * Each command packet has an embedded DMA memory buffer that is used for
4326 * filling MFI frame and the SG list that immediately follows the frame. This
4327 * function creates those DMA memory buffers for each command packet by using
4328 * PCI pool facility.
4329 */
megasas_create_frame_pool(struct megasas_instance * instance)4330 static int megasas_create_frame_pool(struct megasas_instance *instance)
4331 {
4332 int i;
4333 u16 max_cmd;
4334 u32 frame_count;
4335 struct megasas_cmd *cmd;
4336
4337 max_cmd = instance->max_mfi_cmds;
4338
4339 /*
4340 * For MFI controllers.
4341 * max_num_sge = 60
4342 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4343 * Total 960 byte (15 MFI frame of 64 byte)
4344 *
4345 * Fusion adapter require only 3 extra frame.
4346 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4347 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4348 * Total 192 byte (3 MFI frame of 64 byte)
4349 */
4350 frame_count = (instance->adapter_type == MFI_SERIES) ?
4351 (15 + 1) : (3 + 1);
4352 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4353 /*
4354 * Use DMA pool facility provided by PCI layer
4355 */
4356 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4357 &instance->pdev->dev,
4358 instance->mfi_frame_size, 256, 0);
4359
4360 if (!instance->frame_dma_pool) {
4361 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4362 return -ENOMEM;
4363 }
4364
4365 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4366 &instance->pdev->dev, 128,
4367 4, 0);
4368
4369 if (!instance->sense_dma_pool) {
4370 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4371
4372 dma_pool_destroy(instance->frame_dma_pool);
4373 instance->frame_dma_pool = NULL;
4374
4375 return -ENOMEM;
4376 }
4377
4378 /*
4379 * Allocate and attach a frame to each of the commands in cmd_list.
4380 * By making cmd->index as the context instead of the &cmd, we can
4381 * always use 32bit context regardless of the architecture
4382 */
4383 for (i = 0; i < max_cmd; i++) {
4384
4385 cmd = instance->cmd_list[i];
4386
4387 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4388 GFP_KERNEL, &cmd->frame_phys_addr);
4389
4390 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4391 GFP_KERNEL, &cmd->sense_phys_addr);
4392
4393 /*
4394 * megasas_teardown_frame_pool() takes care of freeing
4395 * whatever has been allocated
4396 */
4397 if (!cmd->frame || !cmd->sense) {
4398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4399 megasas_teardown_frame_pool(instance);
4400 return -ENOMEM;
4401 }
4402
4403 cmd->frame->io.context = cpu_to_le32(cmd->index);
4404 cmd->frame->io.pad_0 = 0;
4405 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4406 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4407 }
4408
4409 return 0;
4410 }
4411
4412 /**
4413 * megasas_free_cmds - Free all the cmds in the free cmd pool
4414 * @instance: Adapter soft state
4415 */
megasas_free_cmds(struct megasas_instance * instance)4416 void megasas_free_cmds(struct megasas_instance *instance)
4417 {
4418 int i;
4419
4420 /* First free the MFI frame pool */
4421 megasas_teardown_frame_pool(instance);
4422
4423 /* Free all the commands in the cmd_list */
4424 for (i = 0; i < instance->max_mfi_cmds; i++)
4425
4426 kfree(instance->cmd_list[i]);
4427
4428 /* Free the cmd_list buffer itself */
4429 kfree(instance->cmd_list);
4430 instance->cmd_list = NULL;
4431
4432 INIT_LIST_HEAD(&instance->cmd_pool);
4433 }
4434
4435 /**
4436 * megasas_alloc_cmds - Allocates the command packets
4437 * @instance: Adapter soft state
4438 *
4439 * Each command that is issued to the FW, whether IO commands from the OS or
4440 * internal commands like IOCTLs, are wrapped in local data structure called
4441 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4442 * the FW.
4443 *
4444 * Each frame has a 32-bit field called context (tag). This context is used
4445 * to get back the megasas_cmd from the frame when a frame gets completed in
4446 * the ISR. Typically the address of the megasas_cmd itself would be used as
4447 * the context. But we wanted to keep the differences between 32 and 64 bit
4448 * systems to the mininum. We always use 32 bit integers for the context. In
4449 * this driver, the 32 bit values are the indices into an array cmd_list.
4450 * This array is used only to look up the megasas_cmd given the context. The
4451 * free commands themselves are maintained in a linked list called cmd_pool.
4452 */
megasas_alloc_cmds(struct megasas_instance * instance)4453 int megasas_alloc_cmds(struct megasas_instance *instance)
4454 {
4455 int i;
4456 int j;
4457 u16 max_cmd;
4458 struct megasas_cmd *cmd;
4459
4460 max_cmd = instance->max_mfi_cmds;
4461
4462 /*
4463 * instance->cmd_list is an array of struct megasas_cmd pointers.
4464 * Allocate the dynamic array first and then allocate individual
4465 * commands.
4466 */
4467 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4468
4469 if (!instance->cmd_list) {
4470 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4471 return -ENOMEM;
4472 }
4473
4474 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4475
4476 for (i = 0; i < max_cmd; i++) {
4477 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4478 GFP_KERNEL);
4479
4480 if (!instance->cmd_list[i]) {
4481
4482 for (j = 0; j < i; j++)
4483 kfree(instance->cmd_list[j]);
4484
4485 kfree(instance->cmd_list);
4486 instance->cmd_list = NULL;
4487
4488 return -ENOMEM;
4489 }
4490 }
4491
4492 for (i = 0; i < max_cmd; i++) {
4493 cmd = instance->cmd_list[i];
4494 memset(cmd, 0, sizeof(struct megasas_cmd));
4495 cmd->index = i;
4496 cmd->scmd = NULL;
4497 cmd->instance = instance;
4498
4499 list_add_tail(&cmd->list, &instance->cmd_pool);
4500 }
4501
4502 /*
4503 * Create a frame pool and assign one frame to each cmd
4504 */
4505 if (megasas_create_frame_pool(instance)) {
4506 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4507 megasas_free_cmds(instance);
4508 return -ENOMEM;
4509 }
4510
4511 return 0;
4512 }
4513
4514 /*
4515 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4516 * @instance: Adapter soft state
4517 *
4518 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4519 * or FW is not under OCR.
4520 */
4521 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4522 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4523
4524 if (instance->adapter_type == MFI_SERIES)
4525 return KILL_ADAPTER;
4526 else if (instance->unload ||
4527 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4528 &instance->reset_flags))
4529 return IGNORE_TIMEOUT;
4530 else
4531 return INITIATE_OCR;
4532 }
4533
4534 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4535 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4536 {
4537 int ret;
4538 struct megasas_cmd *cmd;
4539 struct megasas_dcmd_frame *dcmd;
4540
4541 struct MR_PRIV_DEVICE *mr_device_priv_data;
4542 u16 device_id = 0;
4543
4544 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4545 cmd = megasas_get_cmd(instance);
4546
4547 if (!cmd) {
4548 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4549 return;
4550 }
4551
4552 dcmd = &cmd->frame->dcmd;
4553
4554 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4555 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4556
4557 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4558 dcmd->cmd = MFI_CMD_DCMD;
4559 dcmd->cmd_status = 0xFF;
4560 dcmd->sge_count = 1;
4561 dcmd->flags = MFI_FRAME_DIR_READ;
4562 dcmd->timeout = 0;
4563 dcmd->pad_0 = 0;
4564 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4565 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4566
4567 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4568 sizeof(struct MR_PD_INFO));
4569
4570 if ((instance->adapter_type != MFI_SERIES) &&
4571 !instance->mask_interrupts)
4572 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4573 else
4574 ret = megasas_issue_polled(instance, cmd);
4575
4576 switch (ret) {
4577 case DCMD_SUCCESS:
4578 mr_device_priv_data = sdev->hostdata;
4579 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4580 mr_device_priv_data->interface_type =
4581 instance->pd_info->state.ddf.pdType.intf;
4582 break;
4583
4584 case DCMD_TIMEOUT:
4585
4586 switch (dcmd_timeout_ocr_possible(instance)) {
4587 case INITIATE_OCR:
4588 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4589 mutex_unlock(&instance->reset_mutex);
4590 megasas_reset_fusion(instance->host,
4591 MFI_IO_TIMEOUT_OCR);
4592 mutex_lock(&instance->reset_mutex);
4593 break;
4594 case KILL_ADAPTER:
4595 megaraid_sas_kill_hba(instance);
4596 break;
4597 case IGNORE_TIMEOUT:
4598 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4599 __func__, __LINE__);
4600 break;
4601 }
4602
4603 break;
4604 }
4605
4606 if (ret != DCMD_TIMEOUT)
4607 megasas_return_cmd(instance, cmd);
4608
4609 return;
4610 }
4611 /*
4612 * megasas_get_pd_list_info - Returns FW's pd_list structure
4613 * @instance: Adapter soft state
4614 * @pd_list: pd_list structure
4615 *
4616 * Issues an internal command (DCMD) to get the FW's controller PD
4617 * list structure. This information is mainly used to find out SYSTEM
4618 * supported by the FW.
4619 */
4620 static int
megasas_get_pd_list(struct megasas_instance * instance)4621 megasas_get_pd_list(struct megasas_instance *instance)
4622 {
4623 int ret = 0, pd_index = 0;
4624 struct megasas_cmd *cmd;
4625 struct megasas_dcmd_frame *dcmd;
4626 struct MR_PD_LIST *ci;
4627 struct MR_PD_ADDRESS *pd_addr;
4628
4629 if (instance->pd_list_not_supported) {
4630 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4631 "not supported by firmware\n");
4632 return ret;
4633 }
4634
4635 ci = instance->pd_list_buf;
4636
4637 cmd = megasas_get_cmd(instance);
4638
4639 if (!cmd) {
4640 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4641 return -ENOMEM;
4642 }
4643
4644 dcmd = &cmd->frame->dcmd;
4645
4646 memset(ci, 0, sizeof(*ci));
4647 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4648
4649 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4650 dcmd->mbox.b[1] = 0;
4651 dcmd->cmd = MFI_CMD_DCMD;
4652 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4653 dcmd->sge_count = 1;
4654 dcmd->flags = MFI_FRAME_DIR_READ;
4655 dcmd->timeout = 0;
4656 dcmd->pad_0 = 0;
4657 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4658 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4659
4660 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4661 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4662
4663 if ((instance->adapter_type != MFI_SERIES) &&
4664 !instance->mask_interrupts)
4665 ret = megasas_issue_blocked_cmd(instance, cmd,
4666 MFI_IO_TIMEOUT_SECS);
4667 else
4668 ret = megasas_issue_polled(instance, cmd);
4669
4670 switch (ret) {
4671 case DCMD_FAILED:
4672 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4673 "failed/not supported by firmware\n");
4674
4675 if (instance->adapter_type != MFI_SERIES)
4676 megaraid_sas_kill_hba(instance);
4677 else
4678 instance->pd_list_not_supported = 1;
4679 break;
4680 case DCMD_TIMEOUT:
4681
4682 switch (dcmd_timeout_ocr_possible(instance)) {
4683 case INITIATE_OCR:
4684 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4685 /*
4686 * DCMD failed from AEN path.
4687 * AEN path already hold reset_mutex to avoid PCI access
4688 * while OCR is in progress.
4689 */
4690 mutex_unlock(&instance->reset_mutex);
4691 megasas_reset_fusion(instance->host,
4692 MFI_IO_TIMEOUT_OCR);
4693 mutex_lock(&instance->reset_mutex);
4694 break;
4695 case KILL_ADAPTER:
4696 megaraid_sas_kill_hba(instance);
4697 break;
4698 case IGNORE_TIMEOUT:
4699 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4700 __func__, __LINE__);
4701 break;
4702 }
4703
4704 break;
4705
4706 case DCMD_SUCCESS:
4707 pd_addr = ci->addr;
4708 if (megasas_dbg_lvl & LD_PD_DEBUG)
4709 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4710 __func__, le32_to_cpu(ci->count));
4711
4712 if ((le32_to_cpu(ci->count) >
4713 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4714 break;
4715
4716 memset(instance->local_pd_list, 0,
4717 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4718
4719 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4720 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4721 le16_to_cpu(pd_addr->deviceId);
4722 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4723 pd_addr->scsiDevType;
4724 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4725 MR_PD_STATE_SYSTEM;
4726 if (megasas_dbg_lvl & LD_PD_DEBUG)
4727 dev_info(&instance->pdev->dev,
4728 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4729 pd_index, le16_to_cpu(pd_addr->deviceId),
4730 pd_addr->scsiDevType);
4731 pd_addr++;
4732 }
4733
4734 memcpy(instance->pd_list, instance->local_pd_list,
4735 sizeof(instance->pd_list));
4736 break;
4737
4738 }
4739
4740 if (ret != DCMD_TIMEOUT)
4741 megasas_return_cmd(instance, cmd);
4742
4743 return ret;
4744 }
4745
4746 /*
4747 * megasas_get_ld_list_info - Returns FW's ld_list structure
4748 * @instance: Adapter soft state
4749 * @ld_list: ld_list structure
4750 *
4751 * Issues an internal command (DCMD) to get the FW's controller PD
4752 * list structure. This information is mainly used to find out SYSTEM
4753 * supported by the FW.
4754 */
4755 static int
megasas_get_ld_list(struct megasas_instance * instance)4756 megasas_get_ld_list(struct megasas_instance *instance)
4757 {
4758 int ret = 0, ld_index = 0, ids = 0;
4759 struct megasas_cmd *cmd;
4760 struct megasas_dcmd_frame *dcmd;
4761 struct MR_LD_LIST *ci;
4762 dma_addr_t ci_h = 0;
4763 u32 ld_count;
4764
4765 ci = instance->ld_list_buf;
4766 ci_h = instance->ld_list_buf_h;
4767
4768 cmd = megasas_get_cmd(instance);
4769
4770 if (!cmd) {
4771 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4772 return -ENOMEM;
4773 }
4774
4775 dcmd = &cmd->frame->dcmd;
4776
4777 memset(ci, 0, sizeof(*ci));
4778 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4779
4780 if (instance->supportmax256vd)
4781 dcmd->mbox.b[0] = 1;
4782 dcmd->cmd = MFI_CMD_DCMD;
4783 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4784 dcmd->sge_count = 1;
4785 dcmd->flags = MFI_FRAME_DIR_READ;
4786 dcmd->timeout = 0;
4787 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4788 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4789 dcmd->pad_0 = 0;
4790
4791 megasas_set_dma_settings(instance, dcmd, ci_h,
4792 sizeof(struct MR_LD_LIST));
4793
4794 if ((instance->adapter_type != MFI_SERIES) &&
4795 !instance->mask_interrupts)
4796 ret = megasas_issue_blocked_cmd(instance, cmd,
4797 MFI_IO_TIMEOUT_SECS);
4798 else
4799 ret = megasas_issue_polled(instance, cmd);
4800
4801 ld_count = le32_to_cpu(ci->ldCount);
4802
4803 switch (ret) {
4804 case DCMD_FAILED:
4805 megaraid_sas_kill_hba(instance);
4806 break;
4807 case DCMD_TIMEOUT:
4808
4809 switch (dcmd_timeout_ocr_possible(instance)) {
4810 case INITIATE_OCR:
4811 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4812 /*
4813 * DCMD failed from AEN path.
4814 * AEN path already hold reset_mutex to avoid PCI access
4815 * while OCR is in progress.
4816 */
4817 mutex_unlock(&instance->reset_mutex);
4818 megasas_reset_fusion(instance->host,
4819 MFI_IO_TIMEOUT_OCR);
4820 mutex_lock(&instance->reset_mutex);
4821 break;
4822 case KILL_ADAPTER:
4823 megaraid_sas_kill_hba(instance);
4824 break;
4825 case IGNORE_TIMEOUT:
4826 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4827 __func__, __LINE__);
4828 break;
4829 }
4830
4831 break;
4832
4833 case DCMD_SUCCESS:
4834 if (megasas_dbg_lvl & LD_PD_DEBUG)
4835 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4836 __func__, ld_count);
4837
4838 if (ld_count > instance->fw_supported_vd_count)
4839 break;
4840
4841 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4842
4843 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4844 if (ci->ldList[ld_index].state != 0) {
4845 ids = ci->ldList[ld_index].ref.targetId;
4846 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4847 if (megasas_dbg_lvl & LD_PD_DEBUG)
4848 dev_info(&instance->pdev->dev,
4849 "LD%d: targetID: 0x%03x\n",
4850 ld_index, ids);
4851 }
4852 }
4853
4854 break;
4855 }
4856
4857 if (ret != DCMD_TIMEOUT)
4858 megasas_return_cmd(instance, cmd);
4859
4860 return ret;
4861 }
4862
4863 /**
4864 * megasas_ld_list_query - Returns FW's ld_list structure
4865 * @instance: Adapter soft state
4866 * @query_type: ld_list structure type
4867 *
4868 * Issues an internal command (DCMD) to get the FW's controller PD
4869 * list structure. This information is mainly used to find out SYSTEM
4870 * supported by the FW.
4871 */
4872 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4873 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4874 {
4875 int ret = 0, ld_index = 0, ids = 0;
4876 struct megasas_cmd *cmd;
4877 struct megasas_dcmd_frame *dcmd;
4878 struct MR_LD_TARGETID_LIST *ci;
4879 dma_addr_t ci_h = 0;
4880 u32 tgtid_count;
4881
4882 ci = instance->ld_targetid_list_buf;
4883 ci_h = instance->ld_targetid_list_buf_h;
4884
4885 cmd = megasas_get_cmd(instance);
4886
4887 if (!cmd) {
4888 dev_warn(&instance->pdev->dev,
4889 "megasas_ld_list_query: Failed to get cmd\n");
4890 return -ENOMEM;
4891 }
4892
4893 dcmd = &cmd->frame->dcmd;
4894
4895 memset(ci, 0, sizeof(*ci));
4896 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4897
4898 dcmd->mbox.b[0] = query_type;
4899 if (instance->supportmax256vd)
4900 dcmd->mbox.b[2] = 1;
4901
4902 dcmd->cmd = MFI_CMD_DCMD;
4903 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4904 dcmd->sge_count = 1;
4905 dcmd->flags = MFI_FRAME_DIR_READ;
4906 dcmd->timeout = 0;
4907 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4908 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4909 dcmd->pad_0 = 0;
4910
4911 megasas_set_dma_settings(instance, dcmd, ci_h,
4912 sizeof(struct MR_LD_TARGETID_LIST));
4913
4914 if ((instance->adapter_type != MFI_SERIES) &&
4915 !instance->mask_interrupts)
4916 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4917 else
4918 ret = megasas_issue_polled(instance, cmd);
4919
4920 switch (ret) {
4921 case DCMD_FAILED:
4922 dev_info(&instance->pdev->dev,
4923 "DCMD not supported by firmware - %s %d\n",
4924 __func__, __LINE__);
4925 ret = megasas_get_ld_list(instance);
4926 break;
4927 case DCMD_TIMEOUT:
4928 switch (dcmd_timeout_ocr_possible(instance)) {
4929 case INITIATE_OCR:
4930 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4931 /*
4932 * DCMD failed from AEN path.
4933 * AEN path already hold reset_mutex to avoid PCI access
4934 * while OCR is in progress.
4935 */
4936 mutex_unlock(&instance->reset_mutex);
4937 megasas_reset_fusion(instance->host,
4938 MFI_IO_TIMEOUT_OCR);
4939 mutex_lock(&instance->reset_mutex);
4940 break;
4941 case KILL_ADAPTER:
4942 megaraid_sas_kill_hba(instance);
4943 break;
4944 case IGNORE_TIMEOUT:
4945 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4946 __func__, __LINE__);
4947 break;
4948 }
4949
4950 break;
4951 case DCMD_SUCCESS:
4952 tgtid_count = le32_to_cpu(ci->count);
4953
4954 if (megasas_dbg_lvl & LD_PD_DEBUG)
4955 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4956 __func__, tgtid_count);
4957
4958 if ((tgtid_count > (instance->fw_supported_vd_count)))
4959 break;
4960
4961 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4962 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4963 ids = ci->targetId[ld_index];
4964 instance->ld_ids[ids] = ci->targetId[ld_index];
4965 if (megasas_dbg_lvl & LD_PD_DEBUG)
4966 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4967 ld_index, ci->targetId[ld_index]);
4968 }
4969
4970 break;
4971 }
4972
4973 if (ret != DCMD_TIMEOUT)
4974 megasas_return_cmd(instance, cmd);
4975
4976 return ret;
4977 }
4978
4979 /**
4980 * megasas_host_device_list_query
4981 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4982 * dcmd.mbox - reserved
4983 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4984 * Desc: This DCMD will return the combined device list
4985 * Status: MFI_STAT_OK - List returned successfully
4986 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4987 * disabled
4988 * @instance: Adapter soft state
4989 * @is_probe: Driver probe check
4990 * Return: 0 if DCMD succeeded
4991 * non-zero if failed
4992 */
4993 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4994 megasas_host_device_list_query(struct megasas_instance *instance,
4995 bool is_probe)
4996 {
4997 int ret, i, target_id;
4998 struct megasas_cmd *cmd;
4999 struct megasas_dcmd_frame *dcmd;
5000 struct MR_HOST_DEVICE_LIST *ci;
5001 u32 count;
5002 dma_addr_t ci_h;
5003
5004 ci = instance->host_device_list_buf;
5005 ci_h = instance->host_device_list_buf_h;
5006
5007 cmd = megasas_get_cmd(instance);
5008
5009 if (!cmd) {
5010 dev_warn(&instance->pdev->dev,
5011 "%s: failed to get cmd\n",
5012 __func__);
5013 return -ENOMEM;
5014 }
5015
5016 dcmd = &cmd->frame->dcmd;
5017
5018 memset(ci, 0, sizeof(*ci));
5019 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5020
5021 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5022 dcmd->cmd = MFI_CMD_DCMD;
5023 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5024 dcmd->sge_count = 1;
5025 dcmd->flags = MFI_FRAME_DIR_READ;
5026 dcmd->timeout = 0;
5027 dcmd->pad_0 = 0;
5028 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5029 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5030
5031 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5032
5033 if (!instance->mask_interrupts) {
5034 ret = megasas_issue_blocked_cmd(instance, cmd,
5035 MFI_IO_TIMEOUT_SECS);
5036 } else {
5037 ret = megasas_issue_polled(instance, cmd);
5038 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5039 }
5040
5041 switch (ret) {
5042 case DCMD_SUCCESS:
5043 /* Fill the internal pd_list and ld_ids array based on
5044 * targetIds returned by FW
5045 */
5046 count = le32_to_cpu(ci->count);
5047
5048 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5049 break;
5050
5051 if (megasas_dbg_lvl & LD_PD_DEBUG)
5052 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5053 __func__, count);
5054
5055 memset(instance->local_pd_list, 0,
5056 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5057 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5058 for (i = 0; i < count; i++) {
5059 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5060 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5061 instance->local_pd_list[target_id].tid = target_id;
5062 instance->local_pd_list[target_id].driveType =
5063 ci->host_device_list[i].scsi_type;
5064 instance->local_pd_list[target_id].driveState =
5065 MR_PD_STATE_SYSTEM;
5066 if (megasas_dbg_lvl & LD_PD_DEBUG)
5067 dev_info(&instance->pdev->dev,
5068 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5069 i, target_id, ci->host_device_list[i].scsi_type);
5070 } else {
5071 instance->ld_ids[target_id] = target_id;
5072 if (megasas_dbg_lvl & LD_PD_DEBUG)
5073 dev_info(&instance->pdev->dev,
5074 "Device %d: LD targetID: 0x%03x\n",
5075 i, target_id);
5076 }
5077 }
5078
5079 memcpy(instance->pd_list, instance->local_pd_list,
5080 sizeof(instance->pd_list));
5081 break;
5082
5083 case DCMD_TIMEOUT:
5084 switch (dcmd_timeout_ocr_possible(instance)) {
5085 case INITIATE_OCR:
5086 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5087 mutex_unlock(&instance->reset_mutex);
5088 megasas_reset_fusion(instance->host,
5089 MFI_IO_TIMEOUT_OCR);
5090 mutex_lock(&instance->reset_mutex);
5091 break;
5092 case KILL_ADAPTER:
5093 megaraid_sas_kill_hba(instance);
5094 break;
5095 case IGNORE_TIMEOUT:
5096 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5097 __func__, __LINE__);
5098 break;
5099 }
5100 break;
5101 case DCMD_FAILED:
5102 dev_err(&instance->pdev->dev,
5103 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5104 __func__);
5105 break;
5106 }
5107
5108 if (ret != DCMD_TIMEOUT)
5109 megasas_return_cmd(instance, cmd);
5110
5111 return ret;
5112 }
5113
5114 /*
5115 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5116 * instance : Controller's instance
5117 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5118 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5119 {
5120 struct fusion_context *fusion;
5121 u32 ventura_map_sz = 0;
5122
5123 fusion = instance->ctrl_context;
5124 /* For MFI based controllers return dummy success */
5125 if (!fusion)
5126 return;
5127
5128 instance->supportmax256vd =
5129 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5130 /* Below is additional check to address future FW enhancement */
5131 if (instance->ctrl_info_buf->max_lds > 64)
5132 instance->supportmax256vd = 1;
5133
5134 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5135 * MEGASAS_MAX_DEV_PER_CHANNEL;
5136 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5137 * MEGASAS_MAX_DEV_PER_CHANNEL;
5138 if (instance->supportmax256vd) {
5139 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5140 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5141 } else {
5142 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5143 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5144 }
5145
5146 dev_info(&instance->pdev->dev,
5147 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5148 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5149 instance->ctrl_info_buf->max_lds);
5150
5151 if (instance->max_raid_mapsize) {
5152 ventura_map_sz = instance->max_raid_mapsize *
5153 MR_MIN_MAP_SIZE; /* 64k */
5154 fusion->current_map_sz = ventura_map_sz;
5155 fusion->max_map_sz = ventura_map_sz;
5156 } else {
5157 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
5158 (sizeof(struct MR_LD_SPAN_MAP) *
5159 (instance->fw_supported_vd_count - 1));
5160 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5161
5162 fusion->max_map_sz =
5163 max(fusion->old_map_sz, fusion->new_map_sz);
5164
5165 if (instance->supportmax256vd)
5166 fusion->current_map_sz = fusion->new_map_sz;
5167 else
5168 fusion->current_map_sz = fusion->old_map_sz;
5169 }
5170 /* irrespective of FW raid maps, driver raid map is constant */
5171 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5172 }
5173
5174 /*
5175 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5176 * dcmd.hdr.length - number of bytes to read
5177 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5178 * Desc: Fill in snapdump properties
5179 * Status: MFI_STAT_OK- Command successful
5180 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5181 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5182 {
5183 int ret = 0;
5184 struct megasas_cmd *cmd;
5185 struct megasas_dcmd_frame *dcmd;
5186 struct MR_SNAPDUMP_PROPERTIES *ci;
5187 dma_addr_t ci_h = 0;
5188
5189 ci = instance->snapdump_prop;
5190 ci_h = instance->snapdump_prop_h;
5191
5192 if (!ci)
5193 return;
5194
5195 cmd = megasas_get_cmd(instance);
5196
5197 if (!cmd) {
5198 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5199 return;
5200 }
5201
5202 dcmd = &cmd->frame->dcmd;
5203
5204 memset(ci, 0, sizeof(*ci));
5205 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5206
5207 dcmd->cmd = MFI_CMD_DCMD;
5208 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5209 dcmd->sge_count = 1;
5210 dcmd->flags = MFI_FRAME_DIR_READ;
5211 dcmd->timeout = 0;
5212 dcmd->pad_0 = 0;
5213 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5214 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5215
5216 megasas_set_dma_settings(instance, dcmd, ci_h,
5217 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5218
5219 if (!instance->mask_interrupts) {
5220 ret = megasas_issue_blocked_cmd(instance, cmd,
5221 MFI_IO_TIMEOUT_SECS);
5222 } else {
5223 ret = megasas_issue_polled(instance, cmd);
5224 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5225 }
5226
5227 switch (ret) {
5228 case DCMD_SUCCESS:
5229 instance->snapdump_wait_time =
5230 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5231 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5232 break;
5233
5234 case DCMD_TIMEOUT:
5235 switch (dcmd_timeout_ocr_possible(instance)) {
5236 case INITIATE_OCR:
5237 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5238 mutex_unlock(&instance->reset_mutex);
5239 megasas_reset_fusion(instance->host,
5240 MFI_IO_TIMEOUT_OCR);
5241 mutex_lock(&instance->reset_mutex);
5242 break;
5243 case KILL_ADAPTER:
5244 megaraid_sas_kill_hba(instance);
5245 break;
5246 case IGNORE_TIMEOUT:
5247 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5248 __func__, __LINE__);
5249 break;
5250 }
5251 }
5252
5253 if (ret != DCMD_TIMEOUT)
5254 megasas_return_cmd(instance, cmd);
5255 }
5256
5257 /**
5258 * megasas_get_ctrl_info - Returns FW's controller structure
5259 * @instance: Adapter soft state
5260 *
5261 * Issues an internal command (DCMD) to get the FW's controller structure.
5262 * This information is mainly used to find out the maximum IO transfer per
5263 * command supported by the FW.
5264 */
5265 int
megasas_get_ctrl_info(struct megasas_instance * instance)5266 megasas_get_ctrl_info(struct megasas_instance *instance)
5267 {
5268 int ret = 0;
5269 struct megasas_cmd *cmd;
5270 struct megasas_dcmd_frame *dcmd;
5271 struct megasas_ctrl_info *ci;
5272 dma_addr_t ci_h = 0;
5273
5274 ci = instance->ctrl_info_buf;
5275 ci_h = instance->ctrl_info_buf_h;
5276
5277 cmd = megasas_get_cmd(instance);
5278
5279 if (!cmd) {
5280 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5281 return -ENOMEM;
5282 }
5283
5284 dcmd = &cmd->frame->dcmd;
5285
5286 memset(ci, 0, sizeof(*ci));
5287 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5288
5289 dcmd->cmd = MFI_CMD_DCMD;
5290 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5291 dcmd->sge_count = 1;
5292 dcmd->flags = MFI_FRAME_DIR_READ;
5293 dcmd->timeout = 0;
5294 dcmd->pad_0 = 0;
5295 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5296 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5297 dcmd->mbox.b[0] = 1;
5298
5299 megasas_set_dma_settings(instance, dcmd, ci_h,
5300 sizeof(struct megasas_ctrl_info));
5301
5302 if ((instance->adapter_type != MFI_SERIES) &&
5303 !instance->mask_interrupts) {
5304 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5305 } else {
5306 ret = megasas_issue_polled(instance, cmd);
5307 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5308 }
5309
5310 switch (ret) {
5311 case DCMD_SUCCESS:
5312 /* Save required controller information in
5313 * CPU endianness format.
5314 */
5315 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5316 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5317 le32_to_cpus((u32 *)&ci->adapterOperations2);
5318 le32_to_cpus((u32 *)&ci->adapterOperations3);
5319 le16_to_cpus((u16 *)&ci->adapter_operations4);
5320 le32_to_cpus((u32 *)&ci->adapter_operations5);
5321
5322 /* Update the latest Ext VD info.
5323 * From Init path, store current firmware details.
5324 * From OCR path, detect any firmware properties changes.
5325 * in case of Firmware upgrade without system reboot.
5326 */
5327 megasas_update_ext_vd_details(instance);
5328 instance->support_seqnum_jbod_fp =
5329 ci->adapterOperations3.useSeqNumJbodFP;
5330 instance->support_morethan256jbod =
5331 ci->adapter_operations4.support_pd_map_target_id;
5332 instance->support_nvme_passthru =
5333 ci->adapter_operations4.support_nvme_passthru;
5334 instance->support_pci_lane_margining =
5335 ci->adapter_operations5.support_pci_lane_margining;
5336 instance->task_abort_tmo = ci->TaskAbortTO;
5337 instance->max_reset_tmo = ci->MaxResetTO;
5338
5339 /*Check whether controller is iMR or MR */
5340 instance->is_imr = (ci->memory_size ? 0 : 1);
5341
5342 instance->snapdump_wait_time =
5343 (ci->properties.on_off_properties2.enable_snap_dump ?
5344 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5345
5346 instance->enable_fw_dev_list =
5347 ci->properties.on_off_properties2.enable_fw_dev_list;
5348
5349 dev_info(&instance->pdev->dev,
5350 "controller type\t: %s(%dMB)\n",
5351 instance->is_imr ? "iMR" : "MR",
5352 le16_to_cpu(ci->memory_size));
5353
5354 instance->disableOnlineCtrlReset =
5355 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5356 instance->secure_jbod_support =
5357 ci->adapterOperations3.supportSecurityonJBOD;
5358 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5359 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5360 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5361 instance->secure_jbod_support ? "Yes" : "No");
5362 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5363 instance->support_nvme_passthru ? "Yes" : "No");
5364 dev_info(&instance->pdev->dev,
5365 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5366 instance->task_abort_tmo, instance->max_reset_tmo);
5367 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5368 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5369 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5370 instance->support_pci_lane_margining ? "Yes" : "No");
5371
5372 break;
5373
5374 case DCMD_TIMEOUT:
5375 switch (dcmd_timeout_ocr_possible(instance)) {
5376 case INITIATE_OCR:
5377 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5378 mutex_unlock(&instance->reset_mutex);
5379 megasas_reset_fusion(instance->host,
5380 MFI_IO_TIMEOUT_OCR);
5381 mutex_lock(&instance->reset_mutex);
5382 break;
5383 case KILL_ADAPTER:
5384 megaraid_sas_kill_hba(instance);
5385 break;
5386 case IGNORE_TIMEOUT:
5387 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5388 __func__, __LINE__);
5389 break;
5390 }
5391 break;
5392 case DCMD_FAILED:
5393 megaraid_sas_kill_hba(instance);
5394 break;
5395
5396 }
5397
5398 if (ret != DCMD_TIMEOUT)
5399 megasas_return_cmd(instance, cmd);
5400
5401 return ret;
5402 }
5403
5404 /*
5405 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5406 * to firmware
5407 *
5408 * @instance: Adapter soft state
5409 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5410 MR_CRASH_BUF_TURN_OFF = 0
5411 MR_CRASH_BUF_TURN_ON = 1
5412 * @return 0 on success non-zero on failure.
5413 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5414 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5415 * that driver supports crash dump feature. This DCMD will be sent only if
5416 * crash dump feature is supported by the FW.
5417 *
5418 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5419 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5420 u8 crash_buf_state)
5421 {
5422 int ret = 0;
5423 struct megasas_cmd *cmd;
5424 struct megasas_dcmd_frame *dcmd;
5425
5426 cmd = megasas_get_cmd(instance);
5427
5428 if (!cmd) {
5429 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5430 return -ENOMEM;
5431 }
5432
5433
5434 dcmd = &cmd->frame->dcmd;
5435
5436 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5437 dcmd->mbox.b[0] = crash_buf_state;
5438 dcmd->cmd = MFI_CMD_DCMD;
5439 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5440 dcmd->sge_count = 1;
5441 dcmd->flags = MFI_FRAME_DIR_NONE;
5442 dcmd->timeout = 0;
5443 dcmd->pad_0 = 0;
5444 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5445 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5446
5447 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5448 CRASH_DMA_BUF_SIZE);
5449
5450 if ((instance->adapter_type != MFI_SERIES) &&
5451 !instance->mask_interrupts)
5452 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5453 else
5454 ret = megasas_issue_polled(instance, cmd);
5455
5456 if (ret == DCMD_TIMEOUT) {
5457 switch (dcmd_timeout_ocr_possible(instance)) {
5458 case INITIATE_OCR:
5459 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5460 megasas_reset_fusion(instance->host,
5461 MFI_IO_TIMEOUT_OCR);
5462 break;
5463 case KILL_ADAPTER:
5464 megaraid_sas_kill_hba(instance);
5465 break;
5466 case IGNORE_TIMEOUT:
5467 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5468 __func__, __LINE__);
5469 break;
5470 }
5471 } else
5472 megasas_return_cmd(instance, cmd);
5473
5474 return ret;
5475 }
5476
5477 /**
5478 * megasas_issue_init_mfi - Initializes the FW
5479 * @instance: Adapter soft state
5480 *
5481 * Issues the INIT MFI cmd
5482 */
5483 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5484 megasas_issue_init_mfi(struct megasas_instance *instance)
5485 {
5486 __le32 context;
5487 struct megasas_cmd *cmd;
5488 struct megasas_init_frame *init_frame;
5489 struct megasas_init_queue_info *initq_info;
5490 dma_addr_t init_frame_h;
5491 dma_addr_t initq_info_h;
5492
5493 /*
5494 * Prepare a init frame. Note the init frame points to queue info
5495 * structure. Each frame has SGL allocated after first 64 bytes. For
5496 * this frame - since we don't need any SGL - we use SGL's space as
5497 * queue info structure
5498 *
5499 * We will not get a NULL command below. We just created the pool.
5500 */
5501 cmd = megasas_get_cmd(instance);
5502
5503 init_frame = (struct megasas_init_frame *)cmd->frame;
5504 initq_info = (struct megasas_init_queue_info *)
5505 ((unsigned long)init_frame + 64);
5506
5507 init_frame_h = cmd->frame_phys_addr;
5508 initq_info_h = init_frame_h + 64;
5509
5510 context = init_frame->context;
5511 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5512 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5513 init_frame->context = context;
5514
5515 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5516 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5517
5518 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5519 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5520
5521 init_frame->cmd = MFI_CMD_INIT;
5522 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5523 init_frame->queue_info_new_phys_addr_lo =
5524 cpu_to_le32(lower_32_bits(initq_info_h));
5525 init_frame->queue_info_new_phys_addr_hi =
5526 cpu_to_le32(upper_32_bits(initq_info_h));
5527
5528 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5529
5530 /*
5531 * disable the intr before firing the init frame to FW
5532 */
5533 instance->instancet->disable_intr(instance);
5534
5535 /*
5536 * Issue the init frame in polled mode
5537 */
5538
5539 if (megasas_issue_polled(instance, cmd)) {
5540 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5541 megasas_return_cmd(instance, cmd);
5542 goto fail_fw_init;
5543 }
5544
5545 megasas_return_cmd(instance, cmd);
5546
5547 return 0;
5548
5549 fail_fw_init:
5550 return -EINVAL;
5551 }
5552
5553 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5554 megasas_init_adapter_mfi(struct megasas_instance *instance)
5555 {
5556 u32 context_sz;
5557 u32 reply_q_sz;
5558
5559 /*
5560 * Get various operational parameters from status register
5561 */
5562 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5563 /*
5564 * Reduce the max supported cmds by 1. This is to ensure that the
5565 * reply_q_sz (1 more than the max cmd that driver may send)
5566 * does not exceed max cmds that the FW can support
5567 */
5568 instance->max_fw_cmds = instance->max_fw_cmds-1;
5569 instance->max_mfi_cmds = instance->max_fw_cmds;
5570 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5571 0x10;
5572 /*
5573 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5574 * are reserved for IOCTL + driver's internal DCMDs.
5575 */
5576 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5577 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5578 instance->max_scsi_cmds = (instance->max_fw_cmds -
5579 MEGASAS_SKINNY_INT_CMDS);
5580 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5581 } else {
5582 instance->max_scsi_cmds = (instance->max_fw_cmds -
5583 MEGASAS_INT_CMDS);
5584 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5585 }
5586
5587 instance->cur_can_queue = instance->max_scsi_cmds;
5588 /*
5589 * Create a pool of commands
5590 */
5591 if (megasas_alloc_cmds(instance))
5592 goto fail_alloc_cmds;
5593
5594 /*
5595 * Allocate memory for reply queue. Length of reply queue should
5596 * be _one_ more than the maximum commands handled by the firmware.
5597 *
5598 * Note: When FW completes commands, it places corresponding contex
5599 * values in this circular reply queue. This circular queue is a fairly
5600 * typical producer-consumer queue. FW is the producer (of completed
5601 * commands) and the driver is the consumer.
5602 */
5603 context_sz = sizeof(u32);
5604 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5605
5606 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5607 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5608
5609 if (!instance->reply_queue) {
5610 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5611 goto fail_reply_queue;
5612 }
5613
5614 if (megasas_issue_init_mfi(instance))
5615 goto fail_fw_init;
5616
5617 if (megasas_get_ctrl_info(instance)) {
5618 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5619 "Fail from %s %d\n", instance->unique_id,
5620 __func__, __LINE__);
5621 goto fail_fw_init;
5622 }
5623
5624 instance->fw_support_ieee = 0;
5625 instance->fw_support_ieee =
5626 (instance->instancet->read_fw_status_reg(instance) &
5627 0x04000000);
5628
5629 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5630 instance->fw_support_ieee);
5631
5632 if (instance->fw_support_ieee)
5633 instance->flag_ieee = 1;
5634
5635 return 0;
5636
5637 fail_fw_init:
5638
5639 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5640 instance->reply_queue, instance->reply_queue_h);
5641 fail_reply_queue:
5642 megasas_free_cmds(instance);
5643
5644 fail_alloc_cmds:
5645 return 1;
5646 }
5647
5648 static
megasas_setup_irq_poll(struct megasas_instance * instance)5649 void megasas_setup_irq_poll(struct megasas_instance *instance)
5650 {
5651 struct megasas_irq_context *irq_ctx;
5652 u32 count, i;
5653
5654 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5655
5656 /* Initialize IRQ poll */
5657 for (i = 0; i < count; i++) {
5658 irq_ctx = &instance->irq_context[i];
5659 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5660 irq_ctx->irq_poll_scheduled = false;
5661 irq_poll_init(&irq_ctx->irqpoll,
5662 instance->threshold_reply_count,
5663 megasas_irqpoll);
5664 }
5665 }
5666
5667 /*
5668 * megasas_setup_irqs_ioapic - register legacy interrupts.
5669 * @instance: Adapter soft state
5670 *
5671 * Do not enable interrupt, only setup ISRs.
5672 *
5673 * Return 0 on success.
5674 */
5675 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5676 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5677 {
5678 struct pci_dev *pdev;
5679
5680 pdev = instance->pdev;
5681 instance->irq_context[0].instance = instance;
5682 instance->irq_context[0].MSIxIndex = 0;
5683 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5684 "megasas", instance->host->host_no);
5685 if (request_irq(pci_irq_vector(pdev, 0),
5686 instance->instancet->service_isr, IRQF_SHARED,
5687 instance->irq_context->name, &instance->irq_context[0])) {
5688 dev_err(&instance->pdev->dev,
5689 "Failed to register IRQ from %s %d\n",
5690 __func__, __LINE__);
5691 return -1;
5692 }
5693 instance->perf_mode = MR_LATENCY_PERF_MODE;
5694 instance->low_latency_index_start = 0;
5695 return 0;
5696 }
5697
5698 /**
5699 * megasas_setup_irqs_msix - register MSI-x interrupts.
5700 * @instance: Adapter soft state
5701 * @is_probe: Driver probe check
5702 *
5703 * Do not enable interrupt, only setup ISRs.
5704 *
5705 * Return 0 on success.
5706 */
5707 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5708 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5709 {
5710 int i, j;
5711 struct pci_dev *pdev;
5712
5713 pdev = instance->pdev;
5714
5715 /* Try MSI-x */
5716 for (i = 0; i < instance->msix_vectors; i++) {
5717 instance->irq_context[i].instance = instance;
5718 instance->irq_context[i].MSIxIndex = i;
5719 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5720 "megasas", instance->host->host_no, i);
5721 if (request_irq(pci_irq_vector(pdev, i),
5722 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5723 &instance->irq_context[i])) {
5724 dev_err(&instance->pdev->dev,
5725 "Failed to register IRQ for vector %d.\n", i);
5726 for (j = 0; j < i; j++) {
5727 if (j < instance->low_latency_index_start)
5728 irq_set_affinity_hint(
5729 pci_irq_vector(pdev, j), NULL);
5730 free_irq(pci_irq_vector(pdev, j),
5731 &instance->irq_context[j]);
5732 }
5733 /* Retry irq register for IO_APIC*/
5734 instance->msix_vectors = 0;
5735 instance->msix_load_balance = false;
5736 if (is_probe) {
5737 pci_free_irq_vectors(instance->pdev);
5738 return megasas_setup_irqs_ioapic(instance);
5739 } else {
5740 return -1;
5741 }
5742 }
5743 }
5744
5745 return 0;
5746 }
5747
5748 /*
5749 * megasas_destroy_irqs- unregister interrupts.
5750 * @instance: Adapter soft state
5751 * return: void
5752 */
5753 static void
megasas_destroy_irqs(struct megasas_instance * instance)5754 megasas_destroy_irqs(struct megasas_instance *instance) {
5755
5756 int i;
5757 int count;
5758 struct megasas_irq_context *irq_ctx;
5759
5760 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5761 if (instance->adapter_type != MFI_SERIES) {
5762 for (i = 0; i < count; i++) {
5763 irq_ctx = &instance->irq_context[i];
5764 irq_poll_disable(&irq_ctx->irqpoll);
5765 }
5766 }
5767
5768 if (instance->msix_vectors)
5769 for (i = 0; i < instance->msix_vectors; i++) {
5770 if (i < instance->low_latency_index_start)
5771 irq_set_affinity_hint(
5772 pci_irq_vector(instance->pdev, i), NULL);
5773 free_irq(pci_irq_vector(instance->pdev, i),
5774 &instance->irq_context[i]);
5775 }
5776 else
5777 free_irq(pci_irq_vector(instance->pdev, 0),
5778 &instance->irq_context[0]);
5779 }
5780
5781 /**
5782 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5783 * @instance: Adapter soft state
5784 *
5785 * Return 0 on success.
5786 */
5787 void
megasas_setup_jbod_map(struct megasas_instance * instance)5788 megasas_setup_jbod_map(struct megasas_instance *instance)
5789 {
5790 int i;
5791 struct fusion_context *fusion = instance->ctrl_context;
5792 u32 pd_seq_map_sz;
5793
5794 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5795 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5796
5797 instance->use_seqnum_jbod_fp =
5798 instance->support_seqnum_jbod_fp;
5799 if (reset_devices || !fusion ||
5800 !instance->support_seqnum_jbod_fp) {
5801 dev_info(&instance->pdev->dev,
5802 "JBOD sequence map is disabled %s %d\n",
5803 __func__, __LINE__);
5804 instance->use_seqnum_jbod_fp = false;
5805 return;
5806 }
5807
5808 if (fusion->pd_seq_sync[0])
5809 goto skip_alloc;
5810
5811 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5812 fusion->pd_seq_sync[i] = dma_alloc_coherent
5813 (&instance->pdev->dev, pd_seq_map_sz,
5814 &fusion->pd_seq_phys[i], GFP_KERNEL);
5815 if (!fusion->pd_seq_sync[i]) {
5816 dev_err(&instance->pdev->dev,
5817 "Failed to allocate memory from %s %d\n",
5818 __func__, __LINE__);
5819 if (i == 1) {
5820 dma_free_coherent(&instance->pdev->dev,
5821 pd_seq_map_sz, fusion->pd_seq_sync[0],
5822 fusion->pd_seq_phys[0]);
5823 fusion->pd_seq_sync[0] = NULL;
5824 }
5825 instance->use_seqnum_jbod_fp = false;
5826 return;
5827 }
5828 }
5829
5830 skip_alloc:
5831 if (!megasas_sync_pd_seq_num(instance, false) &&
5832 !megasas_sync_pd_seq_num(instance, true))
5833 instance->use_seqnum_jbod_fp = true;
5834 else
5835 instance->use_seqnum_jbod_fp = false;
5836 }
5837
megasas_setup_reply_map(struct megasas_instance * instance)5838 static void megasas_setup_reply_map(struct megasas_instance *instance)
5839 {
5840 const struct cpumask *mask;
5841 unsigned int queue, cpu, low_latency_index_start;
5842
5843 low_latency_index_start = instance->low_latency_index_start;
5844
5845 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5846 mask = pci_irq_get_affinity(instance->pdev, queue);
5847 if (!mask)
5848 goto fallback;
5849
5850 for_each_cpu(cpu, mask)
5851 instance->reply_map[cpu] = queue;
5852 }
5853 return;
5854
5855 fallback:
5856 queue = low_latency_index_start;
5857 for_each_possible_cpu(cpu) {
5858 instance->reply_map[cpu] = queue;
5859 if (queue == (instance->msix_vectors - 1))
5860 queue = low_latency_index_start;
5861 else
5862 queue++;
5863 }
5864 }
5865
5866 /**
5867 * megasas_get_device_list - Get the PD and LD device list from FW.
5868 * @instance: Adapter soft state
5869 * @return: Success or failure
5870 *
5871 * Issue DCMDs to Firmware to get the PD and LD list.
5872 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5873 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5874 */
5875 static
megasas_get_device_list(struct megasas_instance * instance)5876 int megasas_get_device_list(struct megasas_instance *instance)
5877 {
5878 memset(instance->pd_list, 0,
5879 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5880 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5881
5882 if (instance->enable_fw_dev_list) {
5883 if (megasas_host_device_list_query(instance, true))
5884 return FAILED;
5885 } else {
5886 if (megasas_get_pd_list(instance) < 0) {
5887 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5888 return FAILED;
5889 }
5890
5891 if (megasas_ld_list_query(instance,
5892 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5893 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5894 return FAILED;
5895 }
5896 }
5897
5898 return SUCCESS;
5899 }
5900
5901 /**
5902 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues
5903 * @instance: Adapter soft state
5904 * return: void
5905 */
5906 static inline void
megasas_set_high_iops_queue_affinity_hint(struct megasas_instance * instance)5907 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5908 {
5909 int i;
5910 int local_numa_node;
5911
5912 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5913 local_numa_node = dev_to_node(&instance->pdev->dev);
5914
5915 for (i = 0; i < instance->low_latency_index_start; i++)
5916 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5917 cpumask_of_node(local_numa_node));
5918 }
5919 }
5920
5921 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5922 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5923 {
5924 int i, irq_flags;
5925 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5926 struct irq_affinity *descp = &desc;
5927
5928 irq_flags = PCI_IRQ_MSIX;
5929
5930 if (instance->smp_affinity_enable)
5931 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5932 else
5933 descp = NULL;
5934
5935 /* Do not allocate msix vectors for poll_queues.
5936 * msix_vectors is always within a range of FW supported reply queue.
5937 */
5938 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5939 instance->low_latency_index_start,
5940 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5941
5942 return i;
5943 }
5944
5945 /**
5946 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5947 * @instance: Adapter soft state
5948 * return: void
5949 */
5950 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5951 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5952 {
5953 int i;
5954 unsigned int num_msix_req;
5955
5956 instance->iopoll_q_count = 0;
5957 if ((instance->adapter_type != MFI_SERIES) &&
5958 poll_queues) {
5959
5960 instance->perf_mode = MR_LATENCY_PERF_MODE;
5961 instance->low_latency_index_start = 1;
5962
5963 /* reserve for default and non-mananged pre-vector. */
5964 if (instance->msix_vectors > (poll_queues + 2))
5965 instance->iopoll_q_count = poll_queues;
5966 else
5967 instance->iopoll_q_count = 0;
5968
5969 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5970 instance->msix_vectors = min(num_msix_req,
5971 instance->msix_vectors);
5972
5973 }
5974
5975 i = __megasas_alloc_irq_vectors(instance);
5976
5977 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5978 || instance->iopoll_q_count) &&
5979 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5980 if (instance->msix_vectors)
5981 pci_free_irq_vectors(instance->pdev);
5982 /* Disable Balanced IOPS mode and try realloc vectors */
5983 instance->perf_mode = MR_LATENCY_PERF_MODE;
5984 instance->low_latency_index_start = 1;
5985 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5986
5987 instance->msix_vectors = min(num_msix_req,
5988 instance->msix_vectors);
5989
5990 instance->iopoll_q_count = 0;
5991 i = __megasas_alloc_irq_vectors(instance);
5992
5993 }
5994
5995 dev_info(&instance->pdev->dev,
5996 "requested/available msix %d/%d poll_queue %d\n",
5997 instance->msix_vectors - instance->iopoll_q_count,
5998 i, instance->iopoll_q_count);
5999
6000 if (i > 0)
6001 instance->msix_vectors = i;
6002 else
6003 instance->msix_vectors = 0;
6004
6005 if (instance->smp_affinity_enable)
6006 megasas_set_high_iops_queue_affinity_hint(instance);
6007 }
6008
6009 /**
6010 * megasas_init_fw - Initializes the FW
6011 * @instance: Adapter soft state
6012 *
6013 * This is the main function for initializing firmware
6014 */
6015
megasas_init_fw(struct megasas_instance * instance)6016 static int megasas_init_fw(struct megasas_instance *instance)
6017 {
6018 u32 max_sectors_1;
6019 u32 max_sectors_2, tmp_sectors, msix_enable;
6020 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6021 resource_size_t base_addr;
6022 void *base_addr_phys;
6023 struct megasas_ctrl_info *ctrl_info = NULL;
6024 unsigned long bar_list;
6025 int i, j, loop;
6026 struct IOV_111 *iovPtr;
6027 struct fusion_context *fusion;
6028 bool intr_coalescing;
6029 unsigned int num_msix_req;
6030 u16 lnksta, speed;
6031
6032 fusion = instance->ctrl_context;
6033
6034 /* Find first memory bar */
6035 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6036 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6037 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6038 "megasas: LSI")) {
6039 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6040 return -EBUSY;
6041 }
6042
6043 base_addr = pci_resource_start(instance->pdev, instance->bar);
6044 instance->reg_set = ioremap(base_addr, 8192);
6045
6046 if (!instance->reg_set) {
6047 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6048 goto fail_ioremap;
6049 }
6050
6051 base_addr_phys = &base_addr;
6052 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6053 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6054 instance->bar, base_addr_phys, instance->reg_set);
6055
6056 if (instance->adapter_type != MFI_SERIES)
6057 instance->instancet = &megasas_instance_template_fusion;
6058 else {
6059 switch (instance->pdev->device) {
6060 case PCI_DEVICE_ID_LSI_SAS1078R:
6061 case PCI_DEVICE_ID_LSI_SAS1078DE:
6062 instance->instancet = &megasas_instance_template_ppc;
6063 break;
6064 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6065 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6066 instance->instancet = &megasas_instance_template_gen2;
6067 break;
6068 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6069 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6070 instance->instancet = &megasas_instance_template_skinny;
6071 break;
6072 case PCI_DEVICE_ID_LSI_SAS1064R:
6073 case PCI_DEVICE_ID_DELL_PERC5:
6074 default:
6075 instance->instancet = &megasas_instance_template_xscale;
6076 instance->pd_list_not_supported = 1;
6077 break;
6078 }
6079 }
6080
6081 if (megasas_transition_to_ready(instance, 0)) {
6082 dev_info(&instance->pdev->dev,
6083 "Failed to transition controller to ready from %s!\n",
6084 __func__);
6085 if (instance->adapter_type != MFI_SERIES) {
6086 status_reg = instance->instancet->read_fw_status_reg(
6087 instance);
6088 if (status_reg & MFI_RESET_ADAPTER) {
6089 if (megasas_adp_reset_wait_for_ready
6090 (instance, true, 0) == FAILED)
6091 goto fail_ready_state;
6092 } else {
6093 goto fail_ready_state;
6094 }
6095 } else {
6096 atomic_set(&instance->fw_reset_no_pci_access, 1);
6097 instance->instancet->adp_reset
6098 (instance, instance->reg_set);
6099 atomic_set(&instance->fw_reset_no_pci_access, 0);
6100
6101 /*waiting for about 30 second before retry*/
6102 ssleep(30);
6103
6104 if (megasas_transition_to_ready(instance, 0))
6105 goto fail_ready_state;
6106 }
6107
6108 dev_info(&instance->pdev->dev,
6109 "FW restarted successfully from %s!\n",
6110 __func__);
6111 }
6112
6113 megasas_init_ctrl_params(instance);
6114
6115 if (megasas_set_dma_mask(instance))
6116 goto fail_ready_state;
6117
6118 if (megasas_alloc_ctrl_mem(instance))
6119 goto fail_alloc_dma_buf;
6120
6121 if (megasas_alloc_ctrl_dma_buffers(instance))
6122 goto fail_alloc_dma_buf;
6123
6124 fusion = instance->ctrl_context;
6125
6126 if (instance->adapter_type >= VENTURA_SERIES) {
6127 scratch_pad_2 =
6128 megasas_readl(instance,
6129 &instance->reg_set->outbound_scratch_pad_2);
6130 instance->max_raid_mapsize = ((scratch_pad_2 >>
6131 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6132 MR_MAX_RAID_MAP_SIZE_MASK);
6133 }
6134
6135 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6136
6137 switch (instance->adapter_type) {
6138 case VENTURA_SERIES:
6139 fusion->pcie_bw_limitation = true;
6140 break;
6141 case AERO_SERIES:
6142 fusion->r56_div_offload = true;
6143 break;
6144 default:
6145 break;
6146 }
6147
6148 /* Check if MSI-X is supported while in ready state */
6149 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6150 0x4000000) >> 0x1a;
6151 if (msix_enable && !msix_disable) {
6152
6153 scratch_pad_1 = megasas_readl
6154 (instance, &instance->reg_set->outbound_scratch_pad_1);
6155 /* Check max MSI-X vectors */
6156 if (fusion) {
6157 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6158 /* Thunderbolt Series*/
6159 instance->msix_vectors = (scratch_pad_1
6160 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6161 } else {
6162 instance->msix_vectors = ((scratch_pad_1
6163 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6164 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6165
6166 /*
6167 * For Invader series, > 8 MSI-x vectors
6168 * supported by FW/HW implies combined
6169 * reply queue mode is enabled.
6170 * For Ventura series, > 16 MSI-x vectors
6171 * supported by FW/HW implies combined
6172 * reply queue mode is enabled.
6173 */
6174 switch (instance->adapter_type) {
6175 case INVADER_SERIES:
6176 if (instance->msix_vectors > 8)
6177 instance->msix_combined = true;
6178 break;
6179 case AERO_SERIES:
6180 case VENTURA_SERIES:
6181 if (instance->msix_vectors > 16)
6182 instance->msix_combined = true;
6183 break;
6184 }
6185
6186 if (rdpq_enable)
6187 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6188 1 : 0;
6189
6190 if (instance->adapter_type >= INVADER_SERIES &&
6191 !instance->msix_combined) {
6192 instance->msix_load_balance = true;
6193 instance->smp_affinity_enable = false;
6194 }
6195
6196 /* Save 1-15 reply post index address to local memory
6197 * Index 0 is already saved from reg offset
6198 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6199 */
6200 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6201 instance->reply_post_host_index_addr[loop] =
6202 (u32 __iomem *)
6203 ((u8 __iomem *)instance->reg_set +
6204 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6205 + (loop * 0x10));
6206 }
6207 }
6208
6209 dev_info(&instance->pdev->dev,
6210 "firmware supports msix\t: (%d)",
6211 instance->msix_vectors);
6212 if (msix_vectors)
6213 instance->msix_vectors = min(msix_vectors,
6214 instance->msix_vectors);
6215 } else /* MFI adapters */
6216 instance->msix_vectors = 1;
6217
6218
6219 /*
6220 * For Aero (if some conditions are met), driver will configure a
6221 * few additional reply queues with interrupt coalescing enabled.
6222 * These queues with interrupt coalescing enabled are called
6223 * High IOPS queues and rest of reply queues (based on number of
6224 * logical CPUs) are termed as Low latency queues.
6225 *
6226 * Total Number of reply queues = High IOPS queues + low latency queues
6227 *
6228 * For rest of fusion adapters, 1 additional reply queue will be
6229 * reserved for management commands, rest of reply queues
6230 * (based on number of logical CPUs) will be used for IOs and
6231 * referenced as IO queues.
6232 * Total Number of reply queues = 1 + IO queues
6233 *
6234 * MFI adapters supports single MSI-x so single reply queue
6235 * will be used for IO and management commands.
6236 */
6237
6238 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6239 true : false;
6240 if (intr_coalescing &&
6241 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6242 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6243 instance->perf_mode = MR_BALANCED_PERF_MODE;
6244 else
6245 instance->perf_mode = MR_LATENCY_PERF_MODE;
6246
6247
6248 if (instance->adapter_type == AERO_SERIES) {
6249 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6250 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6251
6252 /*
6253 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6254 * in latency perf mode and enable R1 PCI bandwidth algorithm
6255 */
6256 if (speed < 0x4) {
6257 instance->perf_mode = MR_LATENCY_PERF_MODE;
6258 fusion->pcie_bw_limitation = true;
6259 }
6260
6261 /*
6262 * Performance mode settings provided through module parameter-perf_mode will
6263 * take affect only for:
6264 * 1. Aero family of adapters.
6265 * 2. When user sets module parameter- perf_mode in range of 0-2.
6266 */
6267 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6268 (perf_mode <= MR_LATENCY_PERF_MODE))
6269 instance->perf_mode = perf_mode;
6270 /*
6271 * If intr coalescing is not supported by controller FW, then IOPS
6272 * and Balanced modes are not feasible.
6273 */
6274 if (!intr_coalescing)
6275 instance->perf_mode = MR_LATENCY_PERF_MODE;
6276
6277 }
6278
6279 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6280 instance->low_latency_index_start =
6281 MR_HIGH_IOPS_QUEUE_COUNT;
6282 else
6283 instance->low_latency_index_start = 1;
6284
6285 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6286
6287 instance->msix_vectors = min(num_msix_req,
6288 instance->msix_vectors);
6289
6290 megasas_alloc_irq_vectors(instance);
6291 if (!instance->msix_vectors)
6292 instance->msix_load_balance = false;
6293 }
6294 /*
6295 * MSI-X host index 0 is common for all adapter.
6296 * It is used for all MPT based Adapters.
6297 */
6298 if (instance->msix_combined) {
6299 instance->reply_post_host_index_addr[0] =
6300 (u32 *)((u8 *)instance->reg_set +
6301 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6302 } else {
6303 instance->reply_post_host_index_addr[0] =
6304 (u32 *)((u8 *)instance->reg_set +
6305 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6306 }
6307
6308 if (!instance->msix_vectors) {
6309 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6310 if (i < 0)
6311 goto fail_init_adapter;
6312 }
6313
6314 megasas_setup_reply_map(instance);
6315
6316 dev_info(&instance->pdev->dev,
6317 "current msix/online cpus\t: (%d/%d)\n",
6318 instance->msix_vectors, (unsigned int)num_online_cpus());
6319 dev_info(&instance->pdev->dev,
6320 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6321
6322 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6323 (unsigned long)instance);
6324
6325 /*
6326 * Below are default value for legacy Firmware.
6327 * non-fusion based controllers
6328 */
6329 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6330 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6331 /* Get operational params, sge flags, send init cmd to controller */
6332 if (instance->instancet->init_adapter(instance))
6333 goto fail_init_adapter;
6334
6335 if (instance->adapter_type >= VENTURA_SERIES) {
6336 scratch_pad_3 =
6337 megasas_readl(instance,
6338 &instance->reg_set->outbound_scratch_pad_3);
6339 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6340 MR_DEFAULT_NVME_PAGE_SHIFT)
6341 instance->nvme_page_size =
6342 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6343
6344 dev_info(&instance->pdev->dev,
6345 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6346 }
6347
6348 if (instance->msix_vectors ?
6349 megasas_setup_irqs_msix(instance, 1) :
6350 megasas_setup_irqs_ioapic(instance))
6351 goto fail_init_adapter;
6352
6353 if (instance->adapter_type != MFI_SERIES)
6354 megasas_setup_irq_poll(instance);
6355
6356 instance->instancet->enable_intr(instance);
6357
6358 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6359
6360 megasas_setup_jbod_map(instance);
6361
6362 if (megasas_get_device_list(instance) != SUCCESS) {
6363 dev_err(&instance->pdev->dev,
6364 "%s: megasas_get_device_list failed\n",
6365 __func__);
6366 goto fail_get_ld_pd_list;
6367 }
6368
6369 /* stream detection initialization */
6370 if (instance->adapter_type >= VENTURA_SERIES) {
6371 fusion->stream_detect_by_ld =
6372 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6373 sizeof(struct LD_STREAM_DETECT *),
6374 GFP_KERNEL);
6375 if (!fusion->stream_detect_by_ld) {
6376 dev_err(&instance->pdev->dev,
6377 "unable to allocate stream detection for pool of LDs\n");
6378 goto fail_get_ld_pd_list;
6379 }
6380 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6381 fusion->stream_detect_by_ld[i] =
6382 kzalloc(sizeof(struct LD_STREAM_DETECT),
6383 GFP_KERNEL);
6384 if (!fusion->stream_detect_by_ld[i]) {
6385 dev_err(&instance->pdev->dev,
6386 "unable to allocate stream detect by LD\n ");
6387 for (j = 0; j < i; ++j)
6388 kfree(fusion->stream_detect_by_ld[j]);
6389 kfree(fusion->stream_detect_by_ld);
6390 fusion->stream_detect_by_ld = NULL;
6391 goto fail_get_ld_pd_list;
6392 }
6393 fusion->stream_detect_by_ld[i]->mru_bit_map
6394 = MR_STREAM_BITMAP;
6395 }
6396 }
6397
6398 /*
6399 * Compute the max allowed sectors per IO: The controller info has two
6400 * limits on max sectors. Driver should use the minimum of these two.
6401 *
6402 * 1 << stripe_sz_ops.min = max sectors per strip
6403 *
6404 * Note that older firmwares ( < FW ver 30) didn't report information
6405 * to calculate max_sectors_1. So the number ended up as zero always.
6406 */
6407 tmp_sectors = 0;
6408 ctrl_info = instance->ctrl_info_buf;
6409
6410 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6411 le16_to_cpu(ctrl_info->max_strips_per_io);
6412 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6413
6414 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6415
6416 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6417 instance->passive = ctrl_info->cluster.passive;
6418 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6419 instance->UnevenSpanSupport =
6420 ctrl_info->adapterOperations2.supportUnevenSpans;
6421 if (instance->UnevenSpanSupport) {
6422 struct fusion_context *fusion = instance->ctrl_context;
6423 if (MR_ValidateMapInfo(instance, instance->map_id))
6424 fusion->fast_path_io = 1;
6425 else
6426 fusion->fast_path_io = 0;
6427
6428 }
6429 if (ctrl_info->host_interface.SRIOV) {
6430 instance->requestorId = ctrl_info->iov.requestorId;
6431 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6432 if (!ctrl_info->adapterOperations2.activePassive)
6433 instance->PlasmaFW111 = 1;
6434
6435 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6436 instance->PlasmaFW111 ? "1.11" : "new");
6437
6438 if (instance->PlasmaFW111) {
6439 iovPtr = (struct IOV_111 *)
6440 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6441 instance->requestorId = iovPtr->requestorId;
6442 }
6443 }
6444 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6445 instance->requestorId);
6446 }
6447
6448 instance->crash_dump_fw_support =
6449 ctrl_info->adapterOperations3.supportCrashDump;
6450 instance->crash_dump_drv_support =
6451 (instance->crash_dump_fw_support &&
6452 instance->crash_dump_buf);
6453 if (instance->crash_dump_drv_support)
6454 megasas_set_crash_dump_params(instance,
6455 MR_CRASH_BUF_TURN_OFF);
6456
6457 else {
6458 if (instance->crash_dump_buf)
6459 dma_free_coherent(&instance->pdev->dev,
6460 CRASH_DMA_BUF_SIZE,
6461 instance->crash_dump_buf,
6462 instance->crash_dump_h);
6463 instance->crash_dump_buf = NULL;
6464 }
6465
6466 if (instance->snapdump_wait_time) {
6467 megasas_get_snapdump_properties(instance);
6468 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6469 instance->snapdump_wait_time);
6470 }
6471
6472 dev_info(&instance->pdev->dev,
6473 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6474 le16_to_cpu(ctrl_info->pci.vendor_id),
6475 le16_to_cpu(ctrl_info->pci.device_id),
6476 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6477 le16_to_cpu(ctrl_info->pci.sub_device_id));
6478 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6479 instance->UnevenSpanSupport ? "yes" : "no");
6480 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6481 instance->crash_dump_drv_support ? "yes" : "no");
6482 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6483 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6484
6485 instance->max_sectors_per_req = instance->max_num_sge *
6486 SGE_BUFFER_SIZE / 512;
6487 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6488 instance->max_sectors_per_req = tmp_sectors;
6489
6490 /* Check for valid throttlequeuedepth module parameter */
6491 if (throttlequeuedepth &&
6492 throttlequeuedepth <= instance->max_scsi_cmds)
6493 instance->throttlequeuedepth = throttlequeuedepth;
6494 else
6495 instance->throttlequeuedepth =
6496 MEGASAS_THROTTLE_QUEUE_DEPTH;
6497
6498 if ((resetwaittime < 1) ||
6499 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6500 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6501
6502 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6503 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6504
6505 /* Launch SR-IOV heartbeat timer */
6506 if (instance->requestorId) {
6507 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6508 megasas_start_timer(instance);
6509 } else {
6510 instance->skip_heartbeat_timer_del = 1;
6511 goto fail_get_ld_pd_list;
6512 }
6513 }
6514
6515 /*
6516 * Create and start watchdog thread which will monitor
6517 * controller state every 1 sec and trigger OCR when
6518 * it enters fault state
6519 */
6520 if (instance->adapter_type != MFI_SERIES)
6521 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6522 goto fail_start_watchdog;
6523
6524 return 0;
6525
6526 fail_start_watchdog:
6527 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6528 del_timer_sync(&instance->sriov_heartbeat_timer);
6529 fail_get_ld_pd_list:
6530 instance->instancet->disable_intr(instance);
6531 megasas_destroy_irqs(instance);
6532 fail_init_adapter:
6533 if (instance->msix_vectors)
6534 pci_free_irq_vectors(instance->pdev);
6535 instance->msix_vectors = 0;
6536 fail_alloc_dma_buf:
6537 megasas_free_ctrl_dma_buffers(instance);
6538 megasas_free_ctrl_mem(instance);
6539 fail_ready_state:
6540 iounmap(instance->reg_set);
6541
6542 fail_ioremap:
6543 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6544
6545 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6546 __func__, __LINE__);
6547 return -EINVAL;
6548 }
6549
6550 /**
6551 * megasas_release_mfi - Reverses the FW initialization
6552 * @instance: Adapter soft state
6553 */
megasas_release_mfi(struct megasas_instance * instance)6554 static void megasas_release_mfi(struct megasas_instance *instance)
6555 {
6556 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6557
6558 if (instance->reply_queue)
6559 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6560 instance->reply_queue, instance->reply_queue_h);
6561
6562 megasas_free_cmds(instance);
6563
6564 iounmap(instance->reg_set);
6565
6566 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6567 }
6568
6569 /**
6570 * megasas_get_seq_num - Gets latest event sequence numbers
6571 * @instance: Adapter soft state
6572 * @eli: FW event log sequence numbers information
6573 *
6574 * FW maintains a log of all events in a non-volatile area. Upper layers would
6575 * usually find out the latest sequence number of the events, the seq number at
6576 * the boot etc. They would "read" all the events below the latest seq number
6577 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6578 * number), they would subsribe to AEN (asynchronous event notification) and
6579 * wait for the events to happen.
6580 */
6581 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6582 megasas_get_seq_num(struct megasas_instance *instance,
6583 struct megasas_evt_log_info *eli)
6584 {
6585 struct megasas_cmd *cmd;
6586 struct megasas_dcmd_frame *dcmd;
6587 struct megasas_evt_log_info *el_info;
6588 dma_addr_t el_info_h = 0;
6589 int ret;
6590
6591 cmd = megasas_get_cmd(instance);
6592
6593 if (!cmd) {
6594 return -ENOMEM;
6595 }
6596
6597 dcmd = &cmd->frame->dcmd;
6598 el_info = dma_alloc_coherent(&instance->pdev->dev,
6599 sizeof(struct megasas_evt_log_info),
6600 &el_info_h, GFP_KERNEL);
6601 if (!el_info) {
6602 megasas_return_cmd(instance, cmd);
6603 return -ENOMEM;
6604 }
6605
6606 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6607
6608 dcmd->cmd = MFI_CMD_DCMD;
6609 dcmd->cmd_status = 0x0;
6610 dcmd->sge_count = 1;
6611 dcmd->flags = MFI_FRAME_DIR_READ;
6612 dcmd->timeout = 0;
6613 dcmd->pad_0 = 0;
6614 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6615 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6616
6617 megasas_set_dma_settings(instance, dcmd, el_info_h,
6618 sizeof(struct megasas_evt_log_info));
6619
6620 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6621 if (ret != DCMD_SUCCESS) {
6622 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6623 __func__, __LINE__);
6624 goto dcmd_failed;
6625 }
6626
6627 /*
6628 * Copy the data back into callers buffer
6629 */
6630 eli->newest_seq_num = el_info->newest_seq_num;
6631 eli->oldest_seq_num = el_info->oldest_seq_num;
6632 eli->clear_seq_num = el_info->clear_seq_num;
6633 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6634 eli->boot_seq_num = el_info->boot_seq_num;
6635
6636 dcmd_failed:
6637 dma_free_coherent(&instance->pdev->dev,
6638 sizeof(struct megasas_evt_log_info),
6639 el_info, el_info_h);
6640
6641 megasas_return_cmd(instance, cmd);
6642
6643 return ret;
6644 }
6645
6646 /**
6647 * megasas_register_aen - Registers for asynchronous event notification
6648 * @instance: Adapter soft state
6649 * @seq_num: The starting sequence number
6650 * @class_locale_word: Class of the event
6651 *
6652 * This function subscribes for AEN for events beyond the @seq_num. It requests
6653 * to be notified if and only if the event is of type @class_locale
6654 */
6655 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6656 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6657 u32 class_locale_word)
6658 {
6659 int ret_val;
6660 struct megasas_cmd *cmd;
6661 struct megasas_dcmd_frame *dcmd;
6662 union megasas_evt_class_locale curr_aen;
6663 union megasas_evt_class_locale prev_aen;
6664
6665 /*
6666 * If there an AEN pending already (aen_cmd), check if the
6667 * class_locale of that pending AEN is inclusive of the new
6668 * AEN request we currently have. If it is, then we don't have
6669 * to do anything. In other words, whichever events the current
6670 * AEN request is subscribing to, have already been subscribed
6671 * to.
6672 *
6673 * If the old_cmd is _not_ inclusive, then we have to abort
6674 * that command, form a class_locale that is superset of both
6675 * old and current and re-issue to the FW
6676 */
6677
6678 curr_aen.word = class_locale_word;
6679
6680 if (instance->aen_cmd) {
6681
6682 prev_aen.word =
6683 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6684
6685 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6686 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6687 dev_info(&instance->pdev->dev,
6688 "%s %d out of range class %d send by application\n",
6689 __func__, __LINE__, curr_aen.members.class);
6690 return 0;
6691 }
6692
6693 /*
6694 * A class whose enum value is smaller is inclusive of all
6695 * higher values. If a PROGRESS (= -1) was previously
6696 * registered, then a new registration requests for higher
6697 * classes need not be sent to FW. They are automatically
6698 * included.
6699 *
6700 * Locale numbers don't have such hierarchy. They are bitmap
6701 * values
6702 */
6703 if ((prev_aen.members.class <= curr_aen.members.class) &&
6704 !((prev_aen.members.locale & curr_aen.members.locale) ^
6705 curr_aen.members.locale)) {
6706 /*
6707 * Previously issued event registration includes
6708 * current request. Nothing to do.
6709 */
6710 return 0;
6711 } else {
6712 curr_aen.members.locale |= prev_aen.members.locale;
6713
6714 if (prev_aen.members.class < curr_aen.members.class)
6715 curr_aen.members.class = prev_aen.members.class;
6716
6717 instance->aen_cmd->abort_aen = 1;
6718 ret_val = megasas_issue_blocked_abort_cmd(instance,
6719 instance->
6720 aen_cmd, 30);
6721
6722 if (ret_val) {
6723 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6724 "previous AEN command\n");
6725 return ret_val;
6726 }
6727 }
6728 }
6729
6730 cmd = megasas_get_cmd(instance);
6731
6732 if (!cmd)
6733 return -ENOMEM;
6734
6735 dcmd = &cmd->frame->dcmd;
6736
6737 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6738
6739 /*
6740 * Prepare DCMD for aen registration
6741 */
6742 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6743
6744 dcmd->cmd = MFI_CMD_DCMD;
6745 dcmd->cmd_status = 0x0;
6746 dcmd->sge_count = 1;
6747 dcmd->flags = MFI_FRAME_DIR_READ;
6748 dcmd->timeout = 0;
6749 dcmd->pad_0 = 0;
6750 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6751 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6752 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6753 instance->last_seq_num = seq_num;
6754 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6755
6756 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6757 sizeof(struct megasas_evt_detail));
6758
6759 if (instance->aen_cmd != NULL) {
6760 megasas_return_cmd(instance, cmd);
6761 return 0;
6762 }
6763
6764 /*
6765 * Store reference to the cmd used to register for AEN. When an
6766 * application wants us to register for AEN, we have to abort this
6767 * cmd and re-register with a new EVENT LOCALE supplied by that app
6768 */
6769 instance->aen_cmd = cmd;
6770
6771 /*
6772 * Issue the aen registration frame
6773 */
6774 instance->instancet->issue_dcmd(instance, cmd);
6775
6776 return 0;
6777 }
6778
6779 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6780 *
6781 * This DCMD will fetch few properties of LD/system PD defined
6782 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6783 *
6784 * DCMD send by drivers whenever new target is added to the OS.
6785 *
6786 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6787 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6788 * 0 = system PD, 1 = LD.
6789 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6790 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6791 *
6792 * @instance: Adapter soft state
6793 * @sdev: OS provided scsi device
6794 *
6795 * Returns 0 on success non-zero on failure.
6796 */
6797 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6798 megasas_get_target_prop(struct megasas_instance *instance,
6799 struct scsi_device *sdev)
6800 {
6801 int ret;
6802 struct megasas_cmd *cmd;
6803 struct megasas_dcmd_frame *dcmd;
6804 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6805 sdev->id;
6806
6807 cmd = megasas_get_cmd(instance);
6808
6809 if (!cmd) {
6810 dev_err(&instance->pdev->dev,
6811 "Failed to get cmd %s\n", __func__);
6812 return -ENOMEM;
6813 }
6814
6815 dcmd = &cmd->frame->dcmd;
6816
6817 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6818 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6819 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6820
6821 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6822 dcmd->cmd = MFI_CMD_DCMD;
6823 dcmd->cmd_status = 0xFF;
6824 dcmd->sge_count = 1;
6825 dcmd->flags = MFI_FRAME_DIR_READ;
6826 dcmd->timeout = 0;
6827 dcmd->pad_0 = 0;
6828 dcmd->data_xfer_len =
6829 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6830 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6831
6832 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6833 sizeof(struct MR_TARGET_PROPERTIES));
6834
6835 if ((instance->adapter_type != MFI_SERIES) &&
6836 !instance->mask_interrupts)
6837 ret = megasas_issue_blocked_cmd(instance,
6838 cmd, MFI_IO_TIMEOUT_SECS);
6839 else
6840 ret = megasas_issue_polled(instance, cmd);
6841
6842 switch (ret) {
6843 case DCMD_TIMEOUT:
6844 switch (dcmd_timeout_ocr_possible(instance)) {
6845 case INITIATE_OCR:
6846 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6847 mutex_unlock(&instance->reset_mutex);
6848 megasas_reset_fusion(instance->host,
6849 MFI_IO_TIMEOUT_OCR);
6850 mutex_lock(&instance->reset_mutex);
6851 break;
6852 case KILL_ADAPTER:
6853 megaraid_sas_kill_hba(instance);
6854 break;
6855 case IGNORE_TIMEOUT:
6856 dev_info(&instance->pdev->dev,
6857 "Ignore DCMD timeout: %s %d\n",
6858 __func__, __LINE__);
6859 break;
6860 }
6861 break;
6862
6863 default:
6864 megasas_return_cmd(instance, cmd);
6865 }
6866 if (ret != DCMD_SUCCESS)
6867 dev_err(&instance->pdev->dev,
6868 "return from %s %d return value %d\n",
6869 __func__, __LINE__, ret);
6870
6871 return ret;
6872 }
6873
6874 /**
6875 * megasas_start_aen - Subscribes to AEN during driver load time
6876 * @instance: Adapter soft state
6877 */
megasas_start_aen(struct megasas_instance * instance)6878 static int megasas_start_aen(struct megasas_instance *instance)
6879 {
6880 struct megasas_evt_log_info eli;
6881 union megasas_evt_class_locale class_locale;
6882
6883 /*
6884 * Get the latest sequence number from FW
6885 */
6886 memset(&eli, 0, sizeof(eli));
6887
6888 if (megasas_get_seq_num(instance, &eli))
6889 return -1;
6890
6891 /*
6892 * Register AEN with FW for latest sequence number plus 1
6893 */
6894 class_locale.members.reserved = 0;
6895 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6896 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6897
6898 return megasas_register_aen(instance,
6899 le32_to_cpu(eli.newest_seq_num) + 1,
6900 class_locale.word);
6901 }
6902
6903 /**
6904 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6905 * @instance: Adapter soft state
6906 */
megasas_io_attach(struct megasas_instance * instance)6907 static int megasas_io_attach(struct megasas_instance *instance)
6908 {
6909 struct Scsi_Host *host = instance->host;
6910
6911 /*
6912 * Export parameters required by SCSI mid-layer
6913 */
6914 host->unique_id = instance->unique_id;
6915 host->can_queue = instance->max_scsi_cmds;
6916 host->this_id = instance->init_id;
6917 host->sg_tablesize = instance->max_num_sge;
6918
6919 if (instance->fw_support_ieee)
6920 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6921
6922 /*
6923 * Check if the module parameter value for max_sectors can be used
6924 */
6925 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6926 instance->max_sectors_per_req = max_sectors;
6927 else {
6928 if (max_sectors) {
6929 if (((instance->pdev->device ==
6930 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6931 (instance->pdev->device ==
6932 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6933 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6934 instance->max_sectors_per_req = max_sectors;
6935 } else {
6936 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6937 "and <= %d (or < 1MB for GEN2 controller)\n",
6938 instance->max_sectors_per_req);
6939 }
6940 }
6941 }
6942
6943 host->max_sectors = instance->max_sectors_per_req;
6944 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6945 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6946 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6947 host->max_lun = MEGASAS_MAX_LUN;
6948 host->max_cmd_len = 16;
6949
6950 /* Use shared host tagset only for fusion adaptors
6951 * if there are managed interrupts (smp affinity enabled case).
6952 * Single msix_vectors in kdump, so shared host tag is also disabled.
6953 */
6954
6955 host->host_tagset = 0;
6956 host->nr_hw_queues = 1;
6957
6958 if ((instance->adapter_type != MFI_SERIES) &&
6959 (instance->msix_vectors > instance->low_latency_index_start) &&
6960 host_tagset_enable &&
6961 instance->smp_affinity_enable) {
6962 host->host_tagset = 1;
6963 host->nr_hw_queues = instance->msix_vectors -
6964 instance->low_latency_index_start + instance->iopoll_q_count;
6965 if (instance->iopoll_q_count)
6966 host->nr_maps = 3;
6967 } else {
6968 instance->iopoll_q_count = 0;
6969 }
6970
6971 dev_info(&instance->pdev->dev,
6972 "Max firmware commands: %d shared with default "
6973 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6974 host->nr_hw_queues - instance->iopoll_q_count,
6975 instance->iopoll_q_count);
6976 /*
6977 * Notify the mid-layer about the new controller
6978 */
6979 if (scsi_add_host(host, &instance->pdev->dev)) {
6980 dev_err(&instance->pdev->dev,
6981 "Failed to add host from %s %d\n",
6982 __func__, __LINE__);
6983 return -ENODEV;
6984 }
6985
6986 return 0;
6987 }
6988
6989 /**
6990 * megasas_set_dma_mask - Set DMA mask for supported controllers
6991 *
6992 * @instance: Adapter soft state
6993 * Description:
6994 *
6995 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6996 *
6997 * For invader-
6998 * By default, driver/FW will operate in 32bit DMA addresses
6999 * for consistent DMA mapping but if 32 bit consistent
7000 * DMA mask fails, driver will try with 63 bit consistent
7001 * mask provided FW is true 63bit DMA capable
7002 *
7003 * For older controllers(Thunderbolt and MFI based adapters)-
7004 * driver/FW will operate in 32 bit consistent DMA addresses.
7005 */
7006 static int
megasas_set_dma_mask(struct megasas_instance * instance)7007 megasas_set_dma_mask(struct megasas_instance *instance)
7008 {
7009 u64 consistent_mask;
7010 struct pci_dev *pdev;
7011 u32 scratch_pad_1;
7012
7013 pdev = instance->pdev;
7014 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7015 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7016
7017 if (IS_DMA64) {
7018 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7019 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7020 goto fail_set_dma_mask;
7021
7022 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7023 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7024 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7025 /*
7026 * If 32 bit DMA mask fails, then try for 64 bit mask
7027 * for FW capable of handling 64 bit DMA.
7028 */
7029 scratch_pad_1 = megasas_readl
7030 (instance, &instance->reg_set->outbound_scratch_pad_1);
7031
7032 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7033 goto fail_set_dma_mask;
7034 else if (dma_set_mask_and_coherent(&pdev->dev,
7035 DMA_BIT_MASK(63)))
7036 goto fail_set_dma_mask;
7037 }
7038 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7039 goto fail_set_dma_mask;
7040
7041 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7042 instance->consistent_mask_64bit = false;
7043 else
7044 instance->consistent_mask_64bit = true;
7045
7046 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7047 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7048 (instance->consistent_mask_64bit ? "63" : "32"));
7049
7050 return 0;
7051
7052 fail_set_dma_mask:
7053 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7054 return -1;
7055
7056 }
7057
7058 /*
7059 * megasas_set_adapter_type - Set adapter type.
7060 * Supported controllers can be divided in
7061 * different categories-
7062 * enum MR_ADAPTER_TYPE {
7063 * MFI_SERIES = 1,
7064 * THUNDERBOLT_SERIES = 2,
7065 * INVADER_SERIES = 3,
7066 * VENTURA_SERIES = 4,
7067 * AERO_SERIES = 5,
7068 * };
7069 * @instance: Adapter soft state
7070 * return: void
7071 */
megasas_set_adapter_type(struct megasas_instance * instance)7072 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7073 {
7074 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7075 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7076 instance->adapter_type = MFI_SERIES;
7077 } else {
7078 switch (instance->pdev->device) {
7079 case PCI_DEVICE_ID_LSI_AERO_10E1:
7080 case PCI_DEVICE_ID_LSI_AERO_10E2:
7081 case PCI_DEVICE_ID_LSI_AERO_10E5:
7082 case PCI_DEVICE_ID_LSI_AERO_10E6:
7083 instance->adapter_type = AERO_SERIES;
7084 break;
7085 case PCI_DEVICE_ID_LSI_VENTURA:
7086 case PCI_DEVICE_ID_LSI_CRUSADER:
7087 case PCI_DEVICE_ID_LSI_HARPOON:
7088 case PCI_DEVICE_ID_LSI_TOMCAT:
7089 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7090 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7091 instance->adapter_type = VENTURA_SERIES;
7092 break;
7093 case PCI_DEVICE_ID_LSI_FUSION:
7094 case PCI_DEVICE_ID_LSI_PLASMA:
7095 instance->adapter_type = THUNDERBOLT_SERIES;
7096 break;
7097 case PCI_DEVICE_ID_LSI_INVADER:
7098 case PCI_DEVICE_ID_LSI_INTRUDER:
7099 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7100 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7101 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7102 case PCI_DEVICE_ID_LSI_FURY:
7103 instance->adapter_type = INVADER_SERIES;
7104 break;
7105 default: /* For all other supported controllers */
7106 instance->adapter_type = MFI_SERIES;
7107 break;
7108 }
7109 }
7110 }
7111
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7112 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7113 {
7114 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7115 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7116 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7117 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7118
7119 if (!instance->producer || !instance->consumer) {
7120 dev_err(&instance->pdev->dev,
7121 "Failed to allocate memory for producer, consumer\n");
7122 return -1;
7123 }
7124
7125 *instance->producer = 0;
7126 *instance->consumer = 0;
7127 return 0;
7128 }
7129
7130 /**
7131 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7132 * structures which are not common across MFI
7133 * adapters and fusion adapters.
7134 * For MFI based adapters, allocate producer and
7135 * consumer buffers. For fusion adapters, allocate
7136 * memory for fusion context.
7137 * @instance: Adapter soft state
7138 * return: 0 for SUCCESS
7139 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7140 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7141 {
7142 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7143 GFP_KERNEL);
7144 if (!instance->reply_map)
7145 return -ENOMEM;
7146
7147 switch (instance->adapter_type) {
7148 case MFI_SERIES:
7149 if (megasas_alloc_mfi_ctrl_mem(instance))
7150 goto fail;
7151 break;
7152 case AERO_SERIES:
7153 case VENTURA_SERIES:
7154 case THUNDERBOLT_SERIES:
7155 case INVADER_SERIES:
7156 if (megasas_alloc_fusion_context(instance))
7157 goto fail;
7158 break;
7159 }
7160
7161 return 0;
7162 fail:
7163 kfree(instance->reply_map);
7164 instance->reply_map = NULL;
7165 return -ENOMEM;
7166 }
7167
7168 /*
7169 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7170 * producer, consumer buffers for MFI adapters
7171 *
7172 * @instance - Adapter soft instance
7173 *
7174 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7175 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7176 {
7177 kfree(instance->reply_map);
7178 if (instance->adapter_type == MFI_SERIES) {
7179 if (instance->producer)
7180 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7181 instance->producer,
7182 instance->producer_h);
7183 if (instance->consumer)
7184 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7185 instance->consumer,
7186 instance->consumer_h);
7187 } else {
7188 megasas_free_fusion_context(instance);
7189 }
7190 }
7191
7192 /**
7193 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7194 * driver load time
7195 *
7196 * @instance: Adapter soft instance
7197 *
7198 * @return: O for SUCCESS
7199 */
7200 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7201 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7202 {
7203 struct pci_dev *pdev = instance->pdev;
7204 struct fusion_context *fusion = instance->ctrl_context;
7205
7206 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7207 sizeof(struct megasas_evt_detail),
7208 &instance->evt_detail_h, GFP_KERNEL);
7209
7210 if (!instance->evt_detail) {
7211 dev_err(&instance->pdev->dev,
7212 "Failed to allocate event detail buffer\n");
7213 return -ENOMEM;
7214 }
7215
7216 if (fusion) {
7217 fusion->ioc_init_request =
7218 dma_alloc_coherent(&pdev->dev,
7219 sizeof(struct MPI2_IOC_INIT_REQUEST),
7220 &fusion->ioc_init_request_phys,
7221 GFP_KERNEL);
7222
7223 if (!fusion->ioc_init_request) {
7224 dev_err(&pdev->dev,
7225 "Failed to allocate PD list buffer\n");
7226 return -ENOMEM;
7227 }
7228
7229 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7230 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7231 &instance->snapdump_prop_h, GFP_KERNEL);
7232
7233 if (!instance->snapdump_prop)
7234 dev_err(&pdev->dev,
7235 "Failed to allocate snapdump properties buffer\n");
7236
7237 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7238 HOST_DEVICE_LIST_SZ,
7239 &instance->host_device_list_buf_h,
7240 GFP_KERNEL);
7241
7242 if (!instance->host_device_list_buf) {
7243 dev_err(&pdev->dev,
7244 "Failed to allocate targetid list buffer\n");
7245 return -ENOMEM;
7246 }
7247
7248 }
7249
7250 instance->pd_list_buf =
7251 dma_alloc_coherent(&pdev->dev,
7252 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7253 &instance->pd_list_buf_h, GFP_KERNEL);
7254
7255 if (!instance->pd_list_buf) {
7256 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7257 return -ENOMEM;
7258 }
7259
7260 instance->ctrl_info_buf =
7261 dma_alloc_coherent(&pdev->dev,
7262 sizeof(struct megasas_ctrl_info),
7263 &instance->ctrl_info_buf_h, GFP_KERNEL);
7264
7265 if (!instance->ctrl_info_buf) {
7266 dev_err(&pdev->dev,
7267 "Failed to allocate controller info buffer\n");
7268 return -ENOMEM;
7269 }
7270
7271 instance->ld_list_buf =
7272 dma_alloc_coherent(&pdev->dev,
7273 sizeof(struct MR_LD_LIST),
7274 &instance->ld_list_buf_h, GFP_KERNEL);
7275
7276 if (!instance->ld_list_buf) {
7277 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7278 return -ENOMEM;
7279 }
7280
7281 instance->ld_targetid_list_buf =
7282 dma_alloc_coherent(&pdev->dev,
7283 sizeof(struct MR_LD_TARGETID_LIST),
7284 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7285
7286 if (!instance->ld_targetid_list_buf) {
7287 dev_err(&pdev->dev,
7288 "Failed to allocate LD targetid list buffer\n");
7289 return -ENOMEM;
7290 }
7291
7292 if (!reset_devices) {
7293 instance->system_info_buf =
7294 dma_alloc_coherent(&pdev->dev,
7295 sizeof(struct MR_DRV_SYSTEM_INFO),
7296 &instance->system_info_h, GFP_KERNEL);
7297 instance->pd_info =
7298 dma_alloc_coherent(&pdev->dev,
7299 sizeof(struct MR_PD_INFO),
7300 &instance->pd_info_h, GFP_KERNEL);
7301 instance->tgt_prop =
7302 dma_alloc_coherent(&pdev->dev,
7303 sizeof(struct MR_TARGET_PROPERTIES),
7304 &instance->tgt_prop_h, GFP_KERNEL);
7305 instance->crash_dump_buf =
7306 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7307 &instance->crash_dump_h, GFP_KERNEL);
7308
7309 if (!instance->system_info_buf)
7310 dev_err(&instance->pdev->dev,
7311 "Failed to allocate system info buffer\n");
7312
7313 if (!instance->pd_info)
7314 dev_err(&instance->pdev->dev,
7315 "Failed to allocate pd_info buffer\n");
7316
7317 if (!instance->tgt_prop)
7318 dev_err(&instance->pdev->dev,
7319 "Failed to allocate tgt_prop buffer\n");
7320
7321 if (!instance->crash_dump_buf)
7322 dev_err(&instance->pdev->dev,
7323 "Failed to allocate crash dump buffer\n");
7324 }
7325
7326 return 0;
7327 }
7328
7329 /*
7330 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7331 * during driver load time
7332 *
7333 * @instance- Adapter soft instance
7334 *
7335 */
7336 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7337 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7338 {
7339 struct pci_dev *pdev = instance->pdev;
7340 struct fusion_context *fusion = instance->ctrl_context;
7341
7342 if (instance->evt_detail)
7343 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7344 instance->evt_detail,
7345 instance->evt_detail_h);
7346
7347 if (fusion && fusion->ioc_init_request)
7348 dma_free_coherent(&pdev->dev,
7349 sizeof(struct MPI2_IOC_INIT_REQUEST),
7350 fusion->ioc_init_request,
7351 fusion->ioc_init_request_phys);
7352
7353 if (instance->pd_list_buf)
7354 dma_free_coherent(&pdev->dev,
7355 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7356 instance->pd_list_buf,
7357 instance->pd_list_buf_h);
7358
7359 if (instance->ld_list_buf)
7360 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7361 instance->ld_list_buf,
7362 instance->ld_list_buf_h);
7363
7364 if (instance->ld_targetid_list_buf)
7365 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7366 instance->ld_targetid_list_buf,
7367 instance->ld_targetid_list_buf_h);
7368
7369 if (instance->ctrl_info_buf)
7370 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7371 instance->ctrl_info_buf,
7372 instance->ctrl_info_buf_h);
7373
7374 if (instance->system_info_buf)
7375 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7376 instance->system_info_buf,
7377 instance->system_info_h);
7378
7379 if (instance->pd_info)
7380 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7381 instance->pd_info, instance->pd_info_h);
7382
7383 if (instance->tgt_prop)
7384 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7385 instance->tgt_prop, instance->tgt_prop_h);
7386
7387 if (instance->crash_dump_buf)
7388 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7389 instance->crash_dump_buf,
7390 instance->crash_dump_h);
7391
7392 if (instance->snapdump_prop)
7393 dma_free_coherent(&pdev->dev,
7394 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7395 instance->snapdump_prop,
7396 instance->snapdump_prop_h);
7397
7398 if (instance->host_device_list_buf)
7399 dma_free_coherent(&pdev->dev,
7400 HOST_DEVICE_LIST_SZ,
7401 instance->host_device_list_buf,
7402 instance->host_device_list_buf_h);
7403
7404 }
7405
7406 /*
7407 * megasas_init_ctrl_params - Initialize controller's instance
7408 * parameters before FW init
7409 * @instance - Adapter soft instance
7410 * @return - void
7411 */
megasas_init_ctrl_params(struct megasas_instance * instance)7412 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7413 {
7414 instance->fw_crash_state = UNAVAILABLE;
7415
7416 megasas_poll_wait_aen = 0;
7417 instance->issuepend_done = 1;
7418 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7419
7420 /*
7421 * Initialize locks and queues
7422 */
7423 INIT_LIST_HEAD(&instance->cmd_pool);
7424 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7425
7426 atomic_set(&instance->fw_outstanding, 0);
7427 atomic64_set(&instance->total_io_count, 0);
7428
7429 init_waitqueue_head(&instance->int_cmd_wait_q);
7430 init_waitqueue_head(&instance->abort_cmd_wait_q);
7431
7432 mutex_init(&instance->crashdump_lock);
7433 spin_lock_init(&instance->mfi_pool_lock);
7434 spin_lock_init(&instance->hba_lock);
7435 spin_lock_init(&instance->stream_lock);
7436 spin_lock_init(&instance->completion_lock);
7437
7438 mutex_init(&instance->reset_mutex);
7439
7440 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7441 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7442 instance->flag_ieee = 1;
7443
7444 megasas_dbg_lvl = 0;
7445 instance->flag = 0;
7446 instance->unload = 1;
7447 instance->last_time = 0;
7448 instance->disableOnlineCtrlReset = 1;
7449 instance->UnevenSpanSupport = 0;
7450 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7451 instance->msix_load_balance = false;
7452
7453 if (instance->adapter_type != MFI_SERIES)
7454 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7455 else
7456 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7457 }
7458
7459 /**
7460 * megasas_probe_one - PCI hotplug entry point
7461 * @pdev: PCI device structure
7462 * @id: PCI ids of supported hotplugged adapter
7463 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7464 static int megasas_probe_one(struct pci_dev *pdev,
7465 const struct pci_device_id *id)
7466 {
7467 int rval, pos;
7468 struct Scsi_Host *host;
7469 struct megasas_instance *instance;
7470 u16 control = 0;
7471
7472 switch (pdev->device) {
7473 case PCI_DEVICE_ID_LSI_AERO_10E0:
7474 case PCI_DEVICE_ID_LSI_AERO_10E3:
7475 case PCI_DEVICE_ID_LSI_AERO_10E4:
7476 case PCI_DEVICE_ID_LSI_AERO_10E7:
7477 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7478 return 1;
7479 case PCI_DEVICE_ID_LSI_AERO_10E1:
7480 case PCI_DEVICE_ID_LSI_AERO_10E5:
7481 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7482 break;
7483 }
7484
7485 /* Reset MSI-X in the kdump kernel */
7486 if (reset_devices) {
7487 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7488 if (pos) {
7489 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7490 &control);
7491 if (control & PCI_MSIX_FLAGS_ENABLE) {
7492 dev_info(&pdev->dev, "resetting MSI-X\n");
7493 pci_write_config_word(pdev,
7494 pos + PCI_MSIX_FLAGS,
7495 control &
7496 ~PCI_MSIX_FLAGS_ENABLE);
7497 }
7498 }
7499 }
7500
7501 /*
7502 * PCI prepping: enable device set bus mastering and dma mask
7503 */
7504 rval = pci_enable_device_mem(pdev);
7505
7506 if (rval) {
7507 return rval;
7508 }
7509
7510 pci_set_master(pdev);
7511
7512 host = scsi_host_alloc(&megasas_template,
7513 sizeof(struct megasas_instance));
7514
7515 if (!host) {
7516 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7517 goto fail_alloc_instance;
7518 }
7519
7520 instance = (struct megasas_instance *)host->hostdata;
7521 memset(instance, 0, sizeof(*instance));
7522 atomic_set(&instance->fw_reset_no_pci_access, 0);
7523
7524 /*
7525 * Initialize PCI related and misc parameters
7526 */
7527 instance->pdev = pdev;
7528 instance->host = host;
7529 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7530 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7531
7532 megasas_set_adapter_type(instance);
7533
7534 /*
7535 * Initialize MFI Firmware
7536 */
7537 if (megasas_init_fw(instance))
7538 goto fail_init_mfi;
7539
7540 if (instance->requestorId) {
7541 if (instance->PlasmaFW111) {
7542 instance->vf_affiliation_111 =
7543 dma_alloc_coherent(&pdev->dev,
7544 sizeof(struct MR_LD_VF_AFFILIATION_111),
7545 &instance->vf_affiliation_111_h,
7546 GFP_KERNEL);
7547 if (!instance->vf_affiliation_111)
7548 dev_warn(&pdev->dev, "Can't allocate "
7549 "memory for VF affiliation buffer\n");
7550 } else {
7551 instance->vf_affiliation =
7552 dma_alloc_coherent(&pdev->dev,
7553 (MAX_LOGICAL_DRIVES + 1) *
7554 sizeof(struct MR_LD_VF_AFFILIATION),
7555 &instance->vf_affiliation_h,
7556 GFP_KERNEL);
7557 if (!instance->vf_affiliation)
7558 dev_warn(&pdev->dev, "Can't allocate "
7559 "memory for VF affiliation buffer\n");
7560 }
7561 }
7562
7563 /*
7564 * Store instance in PCI softstate
7565 */
7566 pci_set_drvdata(pdev, instance);
7567
7568 /*
7569 * Add this controller to megasas_mgmt_info structure so that it
7570 * can be exported to management applications
7571 */
7572 megasas_mgmt_info.count++;
7573 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7574 megasas_mgmt_info.max_index++;
7575
7576 /*
7577 * Register with SCSI mid-layer
7578 */
7579 if (megasas_io_attach(instance))
7580 goto fail_io_attach;
7581
7582 instance->unload = 0;
7583 /*
7584 * Trigger SCSI to scan our drives
7585 */
7586 if (!instance->enable_fw_dev_list ||
7587 (instance->host_device_list_buf->count > 0))
7588 scsi_scan_host(host);
7589
7590 /*
7591 * Initiate AEN (Asynchronous Event Notification)
7592 */
7593 if (megasas_start_aen(instance)) {
7594 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7595 goto fail_start_aen;
7596 }
7597
7598 megasas_setup_debugfs(instance);
7599
7600 /* Get current SR-IOV LD/VF affiliation */
7601 if (instance->requestorId)
7602 megasas_get_ld_vf_affiliation(instance, 1);
7603
7604 return 0;
7605
7606 fail_start_aen:
7607 instance->unload = 1;
7608 scsi_remove_host(instance->host);
7609 fail_io_attach:
7610 megasas_mgmt_info.count--;
7611 megasas_mgmt_info.max_index--;
7612 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7613
7614 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7615 del_timer_sync(&instance->sriov_heartbeat_timer);
7616
7617 instance->instancet->disable_intr(instance);
7618 megasas_destroy_irqs(instance);
7619
7620 if (instance->adapter_type != MFI_SERIES)
7621 megasas_release_fusion(instance);
7622 else
7623 megasas_release_mfi(instance);
7624
7625 if (instance->msix_vectors)
7626 pci_free_irq_vectors(instance->pdev);
7627 instance->msix_vectors = 0;
7628
7629 if (instance->fw_crash_state != UNAVAILABLE)
7630 megasas_free_host_crash_buffer(instance);
7631
7632 if (instance->adapter_type != MFI_SERIES)
7633 megasas_fusion_stop_watchdog(instance);
7634 fail_init_mfi:
7635 scsi_host_put(host);
7636 fail_alloc_instance:
7637 pci_disable_device(pdev);
7638
7639 return -ENODEV;
7640 }
7641
7642 /**
7643 * megasas_flush_cache - Requests FW to flush all its caches
7644 * @instance: Adapter soft state
7645 */
megasas_flush_cache(struct megasas_instance * instance)7646 static void megasas_flush_cache(struct megasas_instance *instance)
7647 {
7648 struct megasas_cmd *cmd;
7649 struct megasas_dcmd_frame *dcmd;
7650
7651 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7652 return;
7653
7654 cmd = megasas_get_cmd(instance);
7655
7656 if (!cmd)
7657 return;
7658
7659 dcmd = &cmd->frame->dcmd;
7660
7661 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7662
7663 dcmd->cmd = MFI_CMD_DCMD;
7664 dcmd->cmd_status = 0x0;
7665 dcmd->sge_count = 0;
7666 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7667 dcmd->timeout = 0;
7668 dcmd->pad_0 = 0;
7669 dcmd->data_xfer_len = 0;
7670 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7671 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7672
7673 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7674 != DCMD_SUCCESS) {
7675 dev_err(&instance->pdev->dev,
7676 "return from %s %d\n", __func__, __LINE__);
7677 return;
7678 }
7679
7680 megasas_return_cmd(instance, cmd);
7681 }
7682
7683 /**
7684 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7685 * @instance: Adapter soft state
7686 * @opcode: Shutdown/Hibernate
7687 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7688 static void megasas_shutdown_controller(struct megasas_instance *instance,
7689 u32 opcode)
7690 {
7691 struct megasas_cmd *cmd;
7692 struct megasas_dcmd_frame *dcmd;
7693
7694 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7695 return;
7696
7697 cmd = megasas_get_cmd(instance);
7698
7699 if (!cmd)
7700 return;
7701
7702 if (instance->aen_cmd)
7703 megasas_issue_blocked_abort_cmd(instance,
7704 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7705 if (instance->map_update_cmd)
7706 megasas_issue_blocked_abort_cmd(instance,
7707 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7708 if (instance->jbod_seq_cmd)
7709 megasas_issue_blocked_abort_cmd(instance,
7710 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7711
7712 dcmd = &cmd->frame->dcmd;
7713
7714 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7715
7716 dcmd->cmd = MFI_CMD_DCMD;
7717 dcmd->cmd_status = 0x0;
7718 dcmd->sge_count = 0;
7719 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7720 dcmd->timeout = 0;
7721 dcmd->pad_0 = 0;
7722 dcmd->data_xfer_len = 0;
7723 dcmd->opcode = cpu_to_le32(opcode);
7724
7725 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7726 != DCMD_SUCCESS) {
7727 dev_err(&instance->pdev->dev,
7728 "return from %s %d\n", __func__, __LINE__);
7729 return;
7730 }
7731
7732 megasas_return_cmd(instance, cmd);
7733 }
7734
7735 /**
7736 * megasas_suspend - driver suspend entry point
7737 * @dev: Device structure
7738 */
7739 static int __maybe_unused
megasas_suspend(struct device * dev)7740 megasas_suspend(struct device *dev)
7741 {
7742 struct megasas_instance *instance;
7743
7744 instance = dev_get_drvdata(dev);
7745
7746 if (!instance)
7747 return 0;
7748
7749 instance->unload = 1;
7750
7751 dev_info(dev, "%s is called\n", __func__);
7752
7753 /* Shutdown SR-IOV heartbeat timer */
7754 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7755 del_timer_sync(&instance->sriov_heartbeat_timer);
7756
7757 /* Stop the FW fault detection watchdog */
7758 if (instance->adapter_type != MFI_SERIES)
7759 megasas_fusion_stop_watchdog(instance);
7760
7761 megasas_flush_cache(instance);
7762 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7763
7764 /* cancel the delayed work if this work still in queue */
7765 if (instance->ev != NULL) {
7766 struct megasas_aen_event *ev = instance->ev;
7767 cancel_delayed_work_sync(&ev->hotplug_work);
7768 instance->ev = NULL;
7769 }
7770
7771 tasklet_kill(&instance->isr_tasklet);
7772
7773 pci_set_drvdata(instance->pdev, instance);
7774 instance->instancet->disable_intr(instance);
7775
7776 megasas_destroy_irqs(instance);
7777
7778 if (instance->msix_vectors)
7779 pci_free_irq_vectors(instance->pdev);
7780
7781 return 0;
7782 }
7783
7784 /**
7785 * megasas_resume- driver resume entry point
7786 * @dev: Device structure
7787 */
7788 static int __maybe_unused
megasas_resume(struct device * dev)7789 megasas_resume(struct device *dev)
7790 {
7791 int rval;
7792 struct Scsi_Host *host;
7793 struct megasas_instance *instance;
7794 u32 status_reg;
7795
7796 instance = dev_get_drvdata(dev);
7797
7798 if (!instance)
7799 return 0;
7800
7801 host = instance->host;
7802
7803 dev_info(dev, "%s is called\n", __func__);
7804
7805 /*
7806 * We expect the FW state to be READY
7807 */
7808
7809 if (megasas_transition_to_ready(instance, 0)) {
7810 dev_info(&instance->pdev->dev,
7811 "Failed to transition controller to ready from %s!\n",
7812 __func__);
7813 if (instance->adapter_type != MFI_SERIES) {
7814 status_reg =
7815 instance->instancet->read_fw_status_reg(instance);
7816 if (!(status_reg & MFI_RESET_ADAPTER) ||
7817 ((megasas_adp_reset_wait_for_ready
7818 (instance, true, 0)) == FAILED))
7819 goto fail_ready_state;
7820 } else {
7821 atomic_set(&instance->fw_reset_no_pci_access, 1);
7822 instance->instancet->adp_reset
7823 (instance, instance->reg_set);
7824 atomic_set(&instance->fw_reset_no_pci_access, 0);
7825
7826 /* waiting for about 30 seconds before retry */
7827 ssleep(30);
7828
7829 if (megasas_transition_to_ready(instance, 0))
7830 goto fail_ready_state;
7831 }
7832
7833 dev_info(&instance->pdev->dev,
7834 "FW restarted successfully from %s!\n",
7835 __func__);
7836 }
7837 if (megasas_set_dma_mask(instance))
7838 goto fail_set_dma_mask;
7839
7840 /*
7841 * Initialize MFI Firmware
7842 */
7843
7844 atomic_set(&instance->fw_outstanding, 0);
7845 atomic_set(&instance->ldio_outstanding, 0);
7846
7847 /* Now re-enable MSI-X */
7848 if (instance->msix_vectors)
7849 megasas_alloc_irq_vectors(instance);
7850
7851 if (!instance->msix_vectors) {
7852 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7853 PCI_IRQ_LEGACY);
7854 if (rval < 0)
7855 goto fail_reenable_msix;
7856 }
7857
7858 megasas_setup_reply_map(instance);
7859
7860 if (instance->adapter_type != MFI_SERIES) {
7861 megasas_reset_reply_desc(instance);
7862 if (megasas_ioc_init_fusion(instance)) {
7863 megasas_free_cmds(instance);
7864 megasas_free_cmds_fusion(instance);
7865 goto fail_init_mfi;
7866 }
7867 if (!megasas_get_map_info(instance))
7868 megasas_sync_map_info(instance);
7869 } else {
7870 *instance->producer = 0;
7871 *instance->consumer = 0;
7872 if (megasas_issue_init_mfi(instance))
7873 goto fail_init_mfi;
7874 }
7875
7876 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7877 goto fail_init_mfi;
7878
7879 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7880 (unsigned long)instance);
7881
7882 if (instance->msix_vectors ?
7883 megasas_setup_irqs_msix(instance, 0) :
7884 megasas_setup_irqs_ioapic(instance))
7885 goto fail_init_mfi;
7886
7887 if (instance->adapter_type != MFI_SERIES)
7888 megasas_setup_irq_poll(instance);
7889
7890 /* Re-launch SR-IOV heartbeat timer */
7891 if (instance->requestorId) {
7892 if (!megasas_sriov_start_heartbeat(instance, 0))
7893 megasas_start_timer(instance);
7894 else {
7895 instance->skip_heartbeat_timer_del = 1;
7896 goto fail_init_mfi;
7897 }
7898 }
7899
7900 instance->instancet->enable_intr(instance);
7901 megasas_setup_jbod_map(instance);
7902 instance->unload = 0;
7903
7904 /*
7905 * Initiate AEN (Asynchronous Event Notification)
7906 */
7907 if (megasas_start_aen(instance))
7908 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7909
7910 /* Re-launch FW fault watchdog */
7911 if (instance->adapter_type != MFI_SERIES)
7912 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7913 goto fail_start_watchdog;
7914
7915 return 0;
7916
7917 fail_start_watchdog:
7918 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7919 del_timer_sync(&instance->sriov_heartbeat_timer);
7920 fail_init_mfi:
7921 megasas_free_ctrl_dma_buffers(instance);
7922 megasas_free_ctrl_mem(instance);
7923 scsi_host_put(host);
7924
7925 fail_reenable_msix:
7926 fail_set_dma_mask:
7927 fail_ready_state:
7928
7929 return -ENODEV;
7930 }
7931
7932 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7933 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7934 {
7935 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7936 int i;
7937 u8 adp_state;
7938
7939 for (i = 0; i < wait_time; i++) {
7940 adp_state = atomic_read(&instance->adprecovery);
7941 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7942 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7943 break;
7944
7945 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7946 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7947
7948 msleep(1000);
7949 }
7950
7951 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7952 dev_info(&instance->pdev->dev,
7953 "%s HBA failed to become operational, adp_state %d\n",
7954 __func__, adp_state);
7955 return 1;
7956 }
7957
7958 return 0;
7959 }
7960
7961 /**
7962 * megasas_detach_one - PCI hot"un"plug entry point
7963 * @pdev: PCI device structure
7964 */
megasas_detach_one(struct pci_dev * pdev)7965 static void megasas_detach_one(struct pci_dev *pdev)
7966 {
7967 int i;
7968 struct Scsi_Host *host;
7969 struct megasas_instance *instance;
7970 struct fusion_context *fusion;
7971 u32 pd_seq_map_sz;
7972
7973 instance = pci_get_drvdata(pdev);
7974
7975 if (!instance)
7976 return;
7977
7978 host = instance->host;
7979 fusion = instance->ctrl_context;
7980
7981 /* Shutdown SR-IOV heartbeat timer */
7982 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7983 del_timer_sync(&instance->sriov_heartbeat_timer);
7984
7985 /* Stop the FW fault detection watchdog */
7986 if (instance->adapter_type != MFI_SERIES)
7987 megasas_fusion_stop_watchdog(instance);
7988
7989 if (instance->fw_crash_state != UNAVAILABLE)
7990 megasas_free_host_crash_buffer(instance);
7991 scsi_remove_host(instance->host);
7992 instance->unload = 1;
7993
7994 if (megasas_wait_for_adapter_operational(instance))
7995 goto skip_firing_dcmds;
7996
7997 megasas_flush_cache(instance);
7998 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7999
8000 skip_firing_dcmds:
8001 /* cancel the delayed work if this work still in queue*/
8002 if (instance->ev != NULL) {
8003 struct megasas_aen_event *ev = instance->ev;
8004 cancel_delayed_work_sync(&ev->hotplug_work);
8005 instance->ev = NULL;
8006 }
8007
8008 /* cancel all wait events */
8009 wake_up_all(&instance->int_cmd_wait_q);
8010
8011 tasklet_kill(&instance->isr_tasklet);
8012
8013 /*
8014 * Take the instance off the instance array. Note that we will not
8015 * decrement the max_index. We let this array be sparse array
8016 */
8017 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8018 if (megasas_mgmt_info.instance[i] == instance) {
8019 megasas_mgmt_info.count--;
8020 megasas_mgmt_info.instance[i] = NULL;
8021
8022 break;
8023 }
8024 }
8025
8026 instance->instancet->disable_intr(instance);
8027
8028 megasas_destroy_irqs(instance);
8029
8030 if (instance->msix_vectors)
8031 pci_free_irq_vectors(instance->pdev);
8032
8033 if (instance->adapter_type >= VENTURA_SERIES) {
8034 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8035 kfree(fusion->stream_detect_by_ld[i]);
8036 kfree(fusion->stream_detect_by_ld);
8037 fusion->stream_detect_by_ld = NULL;
8038 }
8039
8040
8041 if (instance->adapter_type != MFI_SERIES) {
8042 megasas_release_fusion(instance);
8043 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
8044 (sizeof(struct MR_PD_CFG_SEQ) *
8045 (MAX_PHYSICAL_DEVICES - 1));
8046 for (i = 0; i < 2 ; i++) {
8047 if (fusion->ld_map[i])
8048 dma_free_coherent(&instance->pdev->dev,
8049 fusion->max_map_sz,
8050 fusion->ld_map[i],
8051 fusion->ld_map_phys[i]);
8052 if (fusion->ld_drv_map[i]) {
8053 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8054 vfree(fusion->ld_drv_map[i]);
8055 else
8056 free_pages((ulong)fusion->ld_drv_map[i],
8057 fusion->drv_map_pages);
8058 }
8059
8060 if (fusion->pd_seq_sync[i])
8061 dma_free_coherent(&instance->pdev->dev,
8062 pd_seq_map_sz,
8063 fusion->pd_seq_sync[i],
8064 fusion->pd_seq_phys[i]);
8065 }
8066 } else {
8067 megasas_release_mfi(instance);
8068 }
8069
8070 if (instance->vf_affiliation)
8071 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8072 sizeof(struct MR_LD_VF_AFFILIATION),
8073 instance->vf_affiliation,
8074 instance->vf_affiliation_h);
8075
8076 if (instance->vf_affiliation_111)
8077 dma_free_coherent(&pdev->dev,
8078 sizeof(struct MR_LD_VF_AFFILIATION_111),
8079 instance->vf_affiliation_111,
8080 instance->vf_affiliation_111_h);
8081
8082 if (instance->hb_host_mem)
8083 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8084 instance->hb_host_mem,
8085 instance->hb_host_mem_h);
8086
8087 megasas_free_ctrl_dma_buffers(instance);
8088
8089 megasas_free_ctrl_mem(instance);
8090
8091 megasas_destroy_debugfs(instance);
8092
8093 scsi_host_put(host);
8094
8095 pci_disable_device(pdev);
8096 }
8097
8098 /**
8099 * megasas_shutdown - Shutdown entry point
8100 * @pdev: PCI device structure
8101 */
megasas_shutdown(struct pci_dev * pdev)8102 static void megasas_shutdown(struct pci_dev *pdev)
8103 {
8104 struct megasas_instance *instance = pci_get_drvdata(pdev);
8105
8106 if (!instance)
8107 return;
8108
8109 instance->unload = 1;
8110
8111 if (megasas_wait_for_adapter_operational(instance))
8112 goto skip_firing_dcmds;
8113
8114 megasas_flush_cache(instance);
8115 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8116
8117 skip_firing_dcmds:
8118 instance->instancet->disable_intr(instance);
8119 megasas_destroy_irqs(instance);
8120
8121 if (instance->msix_vectors)
8122 pci_free_irq_vectors(instance->pdev);
8123 }
8124
8125 /*
8126 * megasas_mgmt_open - char node "open" entry point
8127 * @inode: char node inode
8128 * @filep: char node file
8129 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8130 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8131 {
8132 /*
8133 * Allow only those users with admin rights
8134 */
8135 if (!capable(CAP_SYS_ADMIN))
8136 return -EACCES;
8137
8138 return 0;
8139 }
8140
8141 /*
8142 * megasas_mgmt_fasync - Async notifier registration from applications
8143 * @fd: char node file descriptor number
8144 * @filep: char node file
8145 * @mode: notifier on/off
8146 *
8147 * This function adds the calling process to a driver global queue. When an
8148 * event occurs, SIGIO will be sent to all processes in this queue.
8149 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8150 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8151 {
8152 int rc;
8153
8154 mutex_lock(&megasas_async_queue_mutex);
8155
8156 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8157
8158 mutex_unlock(&megasas_async_queue_mutex);
8159
8160 if (rc >= 0) {
8161 /* For sanity check when we get ioctl */
8162 filep->private_data = filep;
8163 return 0;
8164 }
8165
8166 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8167
8168 return rc;
8169 }
8170
8171 /*
8172 * megasas_mgmt_poll - char node "poll" entry point
8173 * @filep: char node file
8174 * @wait: Events to poll for
8175 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8176 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8177 {
8178 __poll_t mask;
8179 unsigned long flags;
8180
8181 poll_wait(file, &megasas_poll_wait, wait);
8182 spin_lock_irqsave(&poll_aen_lock, flags);
8183 if (megasas_poll_wait_aen)
8184 mask = (EPOLLIN | EPOLLRDNORM);
8185 else
8186 mask = 0;
8187 megasas_poll_wait_aen = 0;
8188 spin_unlock_irqrestore(&poll_aen_lock, flags);
8189 return mask;
8190 }
8191
8192 /*
8193 * megasas_set_crash_dump_params_ioctl:
8194 * Send CRASH_DUMP_MODE DCMD to all controllers
8195 * @cmd: MFI command frame
8196 */
8197
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8198 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8199 {
8200 struct megasas_instance *local_instance;
8201 int i, error = 0;
8202 int crash_support;
8203
8204 crash_support = cmd->frame->dcmd.mbox.w[0];
8205
8206 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8207 local_instance = megasas_mgmt_info.instance[i];
8208 if (local_instance && local_instance->crash_dump_drv_support) {
8209 if ((atomic_read(&local_instance->adprecovery) ==
8210 MEGASAS_HBA_OPERATIONAL) &&
8211 !megasas_set_crash_dump_params(local_instance,
8212 crash_support)) {
8213 local_instance->crash_dump_app_support =
8214 crash_support;
8215 dev_info(&local_instance->pdev->dev,
8216 "Application firmware crash "
8217 "dump mode set success\n");
8218 error = 0;
8219 } else {
8220 dev_info(&local_instance->pdev->dev,
8221 "Application firmware crash "
8222 "dump mode set failed\n");
8223 error = -1;
8224 }
8225 }
8226 }
8227 return error;
8228 }
8229
8230 /**
8231 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8232 * @instance: Adapter soft state
8233 * @user_ioc: User's ioctl packet
8234 * @ioc: ioctl packet
8235 */
8236 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8237 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8238 struct megasas_iocpacket __user * user_ioc,
8239 struct megasas_iocpacket *ioc)
8240 {
8241 struct megasas_sge64 *kern_sge64 = NULL;
8242 struct megasas_sge32 *kern_sge32 = NULL;
8243 struct megasas_cmd *cmd;
8244 void *kbuff_arr[MAX_IOCTL_SGE];
8245 dma_addr_t buf_handle = 0;
8246 int error = 0, i;
8247 void *sense = NULL;
8248 dma_addr_t sense_handle;
8249 void *sense_ptr;
8250 u32 opcode = 0;
8251 int ret = DCMD_SUCCESS;
8252
8253 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8254
8255 if (ioc->sge_count > MAX_IOCTL_SGE) {
8256 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8257 ioc->sge_count, MAX_IOCTL_SGE);
8258 return -EINVAL;
8259 }
8260
8261 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8262 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8263 !instance->support_nvme_passthru) ||
8264 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8265 !instance->support_pci_lane_margining)) {
8266 dev_err(&instance->pdev->dev,
8267 "Received invalid ioctl command 0x%x\n",
8268 ioc->frame.hdr.cmd);
8269 return -ENOTSUPP;
8270 }
8271
8272 cmd = megasas_get_cmd(instance);
8273 if (!cmd) {
8274 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8275 return -ENOMEM;
8276 }
8277
8278 /*
8279 * User's IOCTL packet has 2 frames (maximum). Copy those two
8280 * frames into our cmd's frames. cmd->frame's context will get
8281 * overwritten when we copy from user's frames. So set that value
8282 * alone separately
8283 */
8284 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8285 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8286 cmd->frame->hdr.pad_0 = 0;
8287
8288 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8289
8290 if (instance->consistent_mask_64bit)
8291 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8292 MFI_FRAME_SENSE64));
8293 else
8294 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8295 MFI_FRAME_SENSE64));
8296
8297 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8298 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8299
8300 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8301 mutex_lock(&instance->reset_mutex);
8302 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8303 megasas_return_cmd(instance, cmd);
8304 mutex_unlock(&instance->reset_mutex);
8305 return -1;
8306 }
8307 mutex_unlock(&instance->reset_mutex);
8308 }
8309
8310 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8311 error = megasas_set_crash_dump_params_ioctl(cmd);
8312 megasas_return_cmd(instance, cmd);
8313 return error;
8314 }
8315
8316 /*
8317 * The management interface between applications and the fw uses
8318 * MFI frames. E.g, RAID configuration changes, LD property changes
8319 * etc are accomplishes through different kinds of MFI frames. The
8320 * driver needs to care only about substituting user buffers with
8321 * kernel buffers in SGLs. The location of SGL is embedded in the
8322 * struct iocpacket itself.
8323 */
8324 if (instance->consistent_mask_64bit)
8325 kern_sge64 = (struct megasas_sge64 *)
8326 ((unsigned long)cmd->frame + ioc->sgl_off);
8327 else
8328 kern_sge32 = (struct megasas_sge32 *)
8329 ((unsigned long)cmd->frame + ioc->sgl_off);
8330
8331 /*
8332 * For each user buffer, create a mirror buffer and copy in
8333 */
8334 for (i = 0; i < ioc->sge_count; i++) {
8335 if (!ioc->sgl[i].iov_len)
8336 continue;
8337
8338 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8339 ioc->sgl[i].iov_len,
8340 &buf_handle, GFP_KERNEL);
8341 if (!kbuff_arr[i]) {
8342 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8343 "kernel SGL buffer for IOCTL\n");
8344 error = -ENOMEM;
8345 goto out;
8346 }
8347
8348 /*
8349 * We don't change the dma_coherent_mask, so
8350 * dma_alloc_coherent only returns 32bit addresses
8351 */
8352 if (instance->consistent_mask_64bit) {
8353 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8354 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8355 } else {
8356 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8357 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8358 }
8359
8360 /*
8361 * We created a kernel buffer corresponding to the
8362 * user buffer. Now copy in from the user buffer
8363 */
8364 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8365 (u32) (ioc->sgl[i].iov_len))) {
8366 error = -EFAULT;
8367 goto out;
8368 }
8369 }
8370
8371 if (ioc->sense_len) {
8372 /* make sure the pointer is part of the frame */
8373 if (ioc->sense_off >
8374 (sizeof(union megasas_frame) - sizeof(__le64))) {
8375 error = -EINVAL;
8376 goto out;
8377 }
8378
8379 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8380 &sense_handle, GFP_KERNEL);
8381 if (!sense) {
8382 error = -ENOMEM;
8383 goto out;
8384 }
8385
8386 /* always store 64 bits regardless of addressing */
8387 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8388 put_unaligned_le64(sense_handle, sense_ptr);
8389 }
8390
8391 /*
8392 * Set the sync_cmd flag so that the ISR knows not to complete this
8393 * cmd to the SCSI mid-layer
8394 */
8395 cmd->sync_cmd = 1;
8396
8397 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8398 switch (ret) {
8399 case DCMD_INIT:
8400 case DCMD_BUSY:
8401 cmd->sync_cmd = 0;
8402 dev_err(&instance->pdev->dev,
8403 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8404 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8405 cmd->cmd_status_drv);
8406 error = -EBUSY;
8407 goto out;
8408 }
8409
8410 cmd->sync_cmd = 0;
8411
8412 if (instance->unload == 1) {
8413 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8414 "don't submit data to application\n");
8415 goto out;
8416 }
8417 /*
8418 * copy out the kernel buffers to user buffers
8419 */
8420 for (i = 0; i < ioc->sge_count; i++) {
8421 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8422 ioc->sgl[i].iov_len)) {
8423 error = -EFAULT;
8424 goto out;
8425 }
8426 }
8427
8428 /*
8429 * copy out the sense
8430 */
8431 if (ioc->sense_len) {
8432 void __user *uptr;
8433 /*
8434 * sense_ptr points to the location that has the user
8435 * sense buffer address
8436 */
8437 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8438 if (in_compat_syscall())
8439 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8440 sense_ptr));
8441 else
8442 uptr = get_unaligned((void __user **)sense_ptr);
8443
8444 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8445 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8446 "sense data\n");
8447 error = -EFAULT;
8448 goto out;
8449 }
8450 }
8451
8452 /*
8453 * copy the status codes returned by the fw
8454 */
8455 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8456 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8457 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8458 error = -EFAULT;
8459 }
8460
8461 out:
8462 if (sense) {
8463 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8464 sense, sense_handle);
8465 }
8466
8467 for (i = 0; i < ioc->sge_count; i++) {
8468 if (kbuff_arr[i]) {
8469 if (instance->consistent_mask_64bit)
8470 dma_free_coherent(&instance->pdev->dev,
8471 le32_to_cpu(kern_sge64[i].length),
8472 kbuff_arr[i],
8473 le64_to_cpu(kern_sge64[i].phys_addr));
8474 else
8475 dma_free_coherent(&instance->pdev->dev,
8476 le32_to_cpu(kern_sge32[i].length),
8477 kbuff_arr[i],
8478 le32_to_cpu(kern_sge32[i].phys_addr));
8479 kbuff_arr[i] = NULL;
8480 }
8481 }
8482
8483 megasas_return_cmd(instance, cmd);
8484 return error;
8485 }
8486
8487 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8488 megasas_compat_iocpacket_get_user(void __user *arg)
8489 {
8490 struct megasas_iocpacket *ioc;
8491 struct compat_megasas_iocpacket __user *cioc = arg;
8492 size_t size;
8493 int err = -EFAULT;
8494 int i;
8495
8496 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8497 if (!ioc)
8498 return ERR_PTR(-ENOMEM);
8499 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8500 if (copy_from_user(ioc, arg, size))
8501 goto out;
8502
8503 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8504 compat_uptr_t iov_base;
8505
8506 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8507 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8508 goto out;
8509
8510 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8511 }
8512
8513 return ioc;
8514 out:
8515 kfree(ioc);
8516 return ERR_PTR(err);
8517 }
8518
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8519 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8520 {
8521 struct megasas_iocpacket __user *user_ioc =
8522 (struct megasas_iocpacket __user *)arg;
8523 struct megasas_iocpacket *ioc;
8524 struct megasas_instance *instance;
8525 int error;
8526
8527 if (in_compat_syscall())
8528 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8529 else
8530 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8531
8532 if (IS_ERR(ioc))
8533 return PTR_ERR(ioc);
8534
8535 instance = megasas_lookup_instance(ioc->host_no);
8536 if (!instance) {
8537 error = -ENODEV;
8538 goto out_kfree_ioc;
8539 }
8540
8541 /* Block ioctls in VF mode */
8542 if (instance->requestorId && !allow_vf_ioctls) {
8543 error = -ENODEV;
8544 goto out_kfree_ioc;
8545 }
8546
8547 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8548 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8549 error = -ENODEV;
8550 goto out_kfree_ioc;
8551 }
8552
8553 if (instance->unload == 1) {
8554 error = -ENODEV;
8555 goto out_kfree_ioc;
8556 }
8557
8558 if (down_interruptible(&instance->ioctl_sem)) {
8559 error = -ERESTARTSYS;
8560 goto out_kfree_ioc;
8561 }
8562
8563 if (megasas_wait_for_adapter_operational(instance)) {
8564 error = -ENODEV;
8565 goto out_up;
8566 }
8567
8568 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8569 out_up:
8570 up(&instance->ioctl_sem);
8571
8572 out_kfree_ioc:
8573 kfree(ioc);
8574 return error;
8575 }
8576
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8577 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8578 {
8579 struct megasas_instance *instance;
8580 struct megasas_aen aen;
8581 int error;
8582
8583 if (file->private_data != file) {
8584 printk(KERN_DEBUG "megasas: fasync_helper was not "
8585 "called first\n");
8586 return -EINVAL;
8587 }
8588
8589 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8590 return -EFAULT;
8591
8592 instance = megasas_lookup_instance(aen.host_no);
8593
8594 if (!instance)
8595 return -ENODEV;
8596
8597 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8598 return -ENODEV;
8599 }
8600
8601 if (instance->unload == 1) {
8602 return -ENODEV;
8603 }
8604
8605 if (megasas_wait_for_adapter_operational(instance))
8606 return -ENODEV;
8607
8608 mutex_lock(&instance->reset_mutex);
8609 error = megasas_register_aen(instance, aen.seq_num,
8610 aen.class_locale_word);
8611 mutex_unlock(&instance->reset_mutex);
8612 return error;
8613 }
8614
8615 /**
8616 * megasas_mgmt_ioctl - char node ioctl entry point
8617 * @file: char device file pointer
8618 * @cmd: ioctl command
8619 * @arg: ioctl command arguments address
8620 */
8621 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8622 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8623 {
8624 switch (cmd) {
8625 case MEGASAS_IOC_FIRMWARE:
8626 return megasas_mgmt_ioctl_fw(file, arg);
8627
8628 case MEGASAS_IOC_GET_AEN:
8629 return megasas_mgmt_ioctl_aen(file, arg);
8630 }
8631
8632 return -ENOTTY;
8633 }
8634
8635 #ifdef CONFIG_COMPAT
8636 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8637 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8638 unsigned long arg)
8639 {
8640 switch (cmd) {
8641 case MEGASAS_IOC_FIRMWARE32:
8642 return megasas_mgmt_ioctl_fw(file, arg);
8643 case MEGASAS_IOC_GET_AEN:
8644 return megasas_mgmt_ioctl_aen(file, arg);
8645 }
8646
8647 return -ENOTTY;
8648 }
8649 #endif
8650
8651 /*
8652 * File operations structure for management interface
8653 */
8654 static const struct file_operations megasas_mgmt_fops = {
8655 .owner = THIS_MODULE,
8656 .open = megasas_mgmt_open,
8657 .fasync = megasas_mgmt_fasync,
8658 .unlocked_ioctl = megasas_mgmt_ioctl,
8659 .poll = megasas_mgmt_poll,
8660 #ifdef CONFIG_COMPAT
8661 .compat_ioctl = megasas_mgmt_compat_ioctl,
8662 #endif
8663 .llseek = noop_llseek,
8664 };
8665
8666 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8667
8668 /*
8669 * PCI hotplug support registration structure
8670 */
8671 static struct pci_driver megasas_pci_driver = {
8672
8673 .name = "megaraid_sas",
8674 .id_table = megasas_pci_table,
8675 .probe = megasas_probe_one,
8676 .remove = megasas_detach_one,
8677 .driver.pm = &megasas_pm_ops,
8678 .shutdown = megasas_shutdown,
8679 };
8680
8681 /*
8682 * Sysfs driver attributes
8683 */
version_show(struct device_driver * dd,char * buf)8684 static ssize_t version_show(struct device_driver *dd, char *buf)
8685 {
8686 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8687 MEGASAS_VERSION);
8688 }
8689 static DRIVER_ATTR_RO(version);
8690
release_date_show(struct device_driver * dd,char * buf)8691 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8692 {
8693 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8694 MEGASAS_RELDATE);
8695 }
8696 static DRIVER_ATTR_RO(release_date);
8697
support_poll_for_event_show(struct device_driver * dd,char * buf)8698 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8699 {
8700 return sprintf(buf, "%u\n", support_poll_for_event);
8701 }
8702 static DRIVER_ATTR_RO(support_poll_for_event);
8703
support_device_change_show(struct device_driver * dd,char * buf)8704 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8705 {
8706 return sprintf(buf, "%u\n", support_device_change);
8707 }
8708 static DRIVER_ATTR_RO(support_device_change);
8709
dbg_lvl_show(struct device_driver * dd,char * buf)8710 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8711 {
8712 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8713 }
8714
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8715 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8716 size_t count)
8717 {
8718 int retval = count;
8719
8720 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8721 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8722 retval = -EINVAL;
8723 }
8724 return retval;
8725 }
8726 static DRIVER_ATTR_RW(dbg_lvl);
8727
8728 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8729 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8730 {
8731 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8732 }
8733
8734 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8735
8736 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8737 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8738 {
8739 return sprintf(buf, "%u\n", support_pci_lane_margining);
8740 }
8741
8742 static DRIVER_ATTR_RO(support_pci_lane_margining);
8743
megasas_remove_scsi_device(struct scsi_device * sdev)8744 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8745 {
8746 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8747 scsi_remove_device(sdev);
8748 scsi_device_put(sdev);
8749 }
8750
8751 /**
8752 * megasas_update_device_list - Update the PD and LD device list from FW
8753 * after an AEN event notification
8754 * @instance: Adapter soft state
8755 * @event_type: Indicates type of event (PD or LD event)
8756 *
8757 * @return: Success or failure
8758 *
8759 * Issue DCMDs to Firmware to update the internal device list in driver.
8760 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8761 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8762 */
8763 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8764 int megasas_update_device_list(struct megasas_instance *instance,
8765 int event_type)
8766 {
8767 int dcmd_ret = DCMD_SUCCESS;
8768
8769 if (instance->enable_fw_dev_list) {
8770 dcmd_ret = megasas_host_device_list_query(instance, false);
8771 if (dcmd_ret != DCMD_SUCCESS)
8772 goto out;
8773 } else {
8774 if (event_type & SCAN_PD_CHANNEL) {
8775 dcmd_ret = megasas_get_pd_list(instance);
8776
8777 if (dcmd_ret != DCMD_SUCCESS)
8778 goto out;
8779 }
8780
8781 if (event_type & SCAN_VD_CHANNEL) {
8782 if (!instance->requestorId ||
8783 megasas_get_ld_vf_affiliation(instance, 0)) {
8784 dcmd_ret = megasas_ld_list_query(instance,
8785 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8786 if (dcmd_ret != DCMD_SUCCESS)
8787 goto out;
8788 }
8789 }
8790 }
8791
8792 out:
8793 return dcmd_ret;
8794 }
8795
8796 /**
8797 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8798 * after an AEN event notification
8799 * @instance: Adapter soft state
8800 * @scan_type: Indicates type of devices (PD/LD) to add
8801 * @return void
8802 */
8803 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8804 void megasas_add_remove_devices(struct megasas_instance *instance,
8805 int scan_type)
8806 {
8807 int i, j;
8808 u16 pd_index = 0;
8809 u16 ld_index = 0;
8810 u16 channel = 0, id = 0;
8811 struct Scsi_Host *host;
8812 struct scsi_device *sdev1;
8813 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8814 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8815
8816 host = instance->host;
8817
8818 if (instance->enable_fw_dev_list) {
8819 targetid_list = instance->host_device_list_buf;
8820 for (i = 0; i < targetid_list->count; i++) {
8821 targetid_entry = &targetid_list->host_device_list[i];
8822 if (targetid_entry->flags.u.bits.is_sys_pd) {
8823 channel = le16_to_cpu(targetid_entry->target_id) /
8824 MEGASAS_MAX_DEV_PER_CHANNEL;
8825 id = le16_to_cpu(targetid_entry->target_id) %
8826 MEGASAS_MAX_DEV_PER_CHANNEL;
8827 } else {
8828 channel = MEGASAS_MAX_PD_CHANNELS +
8829 (le16_to_cpu(targetid_entry->target_id) /
8830 MEGASAS_MAX_DEV_PER_CHANNEL);
8831 id = le16_to_cpu(targetid_entry->target_id) %
8832 MEGASAS_MAX_DEV_PER_CHANNEL;
8833 }
8834 sdev1 = scsi_device_lookup(host, channel, id, 0);
8835 if (!sdev1) {
8836 scsi_add_device(host, channel, id, 0);
8837 } else {
8838 scsi_device_put(sdev1);
8839 }
8840 }
8841 }
8842
8843 if (scan_type & SCAN_PD_CHANNEL) {
8844 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8845 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8846 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8847 sdev1 = scsi_device_lookup(host, i, j, 0);
8848 if (instance->pd_list[pd_index].driveState ==
8849 MR_PD_STATE_SYSTEM) {
8850 if (!sdev1)
8851 scsi_add_device(host, i, j, 0);
8852 else
8853 scsi_device_put(sdev1);
8854 } else {
8855 if (sdev1)
8856 megasas_remove_scsi_device(sdev1);
8857 }
8858 }
8859 }
8860 }
8861
8862 if (scan_type & SCAN_VD_CHANNEL) {
8863 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8864 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8865 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8866 sdev1 = scsi_device_lookup(host,
8867 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8868 if (instance->ld_ids[ld_index] != 0xff) {
8869 if (!sdev1)
8870 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8871 else
8872 scsi_device_put(sdev1);
8873 } else {
8874 if (sdev1)
8875 megasas_remove_scsi_device(sdev1);
8876 }
8877 }
8878 }
8879 }
8880
8881 }
8882
8883 static void
megasas_aen_polling(struct work_struct * work)8884 megasas_aen_polling(struct work_struct *work)
8885 {
8886 struct megasas_aen_event *ev =
8887 container_of(work, struct megasas_aen_event, hotplug_work.work);
8888 struct megasas_instance *instance = ev->instance;
8889 union megasas_evt_class_locale class_locale;
8890 int event_type = 0;
8891 u32 seq_num;
8892 u16 ld_target_id;
8893 int error;
8894 u8 dcmd_ret = DCMD_SUCCESS;
8895 struct scsi_device *sdev1;
8896
8897 if (!instance) {
8898 printk(KERN_ERR "invalid instance!\n");
8899 kfree(ev);
8900 return;
8901 }
8902
8903 /* Don't run the event workqueue thread if OCR is running */
8904 mutex_lock(&instance->reset_mutex);
8905
8906 instance->ev = NULL;
8907 if (instance->evt_detail) {
8908 megasas_decode_evt(instance);
8909
8910 switch (le32_to_cpu(instance->evt_detail->code)) {
8911
8912 case MR_EVT_PD_INSERTED:
8913 case MR_EVT_PD_REMOVED:
8914 event_type = SCAN_PD_CHANNEL;
8915 break;
8916
8917 case MR_EVT_LD_OFFLINE:
8918 case MR_EVT_LD_DELETED:
8919 ld_target_id = instance->evt_detail->args.ld.target_id;
8920 sdev1 = scsi_device_lookup(instance->host,
8921 MEGASAS_MAX_PD_CHANNELS +
8922 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8923 (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL),
8924 0);
8925 if (sdev1)
8926 megasas_remove_scsi_device(sdev1);
8927
8928 event_type = SCAN_VD_CHANNEL;
8929 break;
8930 case MR_EVT_LD_CREATED:
8931 event_type = SCAN_VD_CHANNEL;
8932 break;
8933
8934 case MR_EVT_CFG_CLEARED:
8935 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8936 case MR_EVT_FOREIGN_CFG_IMPORTED:
8937 case MR_EVT_LD_STATE_CHANGE:
8938 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8939 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8940 instance->host->host_no);
8941 break;
8942
8943 case MR_EVT_CTRL_PROP_CHANGED:
8944 dcmd_ret = megasas_get_ctrl_info(instance);
8945 if (dcmd_ret == DCMD_SUCCESS &&
8946 instance->snapdump_wait_time) {
8947 megasas_get_snapdump_properties(instance);
8948 dev_info(&instance->pdev->dev,
8949 "Snap dump wait time\t: %d\n",
8950 instance->snapdump_wait_time);
8951 }
8952 break;
8953 default:
8954 event_type = 0;
8955 break;
8956 }
8957 } else {
8958 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8959 mutex_unlock(&instance->reset_mutex);
8960 kfree(ev);
8961 return;
8962 }
8963
8964 if (event_type)
8965 dcmd_ret = megasas_update_device_list(instance, event_type);
8966
8967 mutex_unlock(&instance->reset_mutex);
8968
8969 if (event_type && dcmd_ret == DCMD_SUCCESS)
8970 megasas_add_remove_devices(instance, event_type);
8971
8972 if (dcmd_ret == DCMD_SUCCESS)
8973 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8974 else
8975 seq_num = instance->last_seq_num;
8976
8977 /* Register AEN with FW for latest sequence number plus 1 */
8978 class_locale.members.reserved = 0;
8979 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8980 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8981
8982 if (instance->aen_cmd != NULL) {
8983 kfree(ev);
8984 return;
8985 }
8986
8987 mutex_lock(&instance->reset_mutex);
8988 error = megasas_register_aen(instance, seq_num,
8989 class_locale.word);
8990 if (error)
8991 dev_err(&instance->pdev->dev,
8992 "register aen failed error %x\n", error);
8993
8994 mutex_unlock(&instance->reset_mutex);
8995 kfree(ev);
8996 }
8997
8998 /**
8999 * megasas_init - Driver load entry point
9000 */
megasas_init(void)9001 static int __init megasas_init(void)
9002 {
9003 int rval;
9004
9005 /*
9006 * Booted in kdump kernel, minimize memory footprints by
9007 * disabling few features
9008 */
9009 if (reset_devices) {
9010 msix_vectors = 1;
9011 rdpq_enable = 0;
9012 dual_qdepth_disable = 1;
9013 poll_queues = 0;
9014 }
9015
9016 /*
9017 * Announce driver version and other information
9018 */
9019 pr_info("megasas: %s\n", MEGASAS_VERSION);
9020
9021 support_poll_for_event = 2;
9022 support_device_change = 1;
9023 support_nvme_encapsulation = true;
9024 support_pci_lane_margining = true;
9025
9026 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9027
9028 /*
9029 * Register character device node
9030 */
9031 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9032
9033 if (rval < 0) {
9034 printk(KERN_DEBUG "megasas: failed to open device node\n");
9035 return rval;
9036 }
9037
9038 megasas_mgmt_majorno = rval;
9039
9040 megasas_init_debugfs();
9041
9042 /*
9043 * Register ourselves as PCI hotplug module
9044 */
9045 rval = pci_register_driver(&megasas_pci_driver);
9046
9047 if (rval) {
9048 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9049 goto err_pcidrv;
9050 }
9051
9052 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9053 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9054 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9055 event_log_level = MFI_EVT_CLASS_CRITICAL;
9056 }
9057
9058 rval = driver_create_file(&megasas_pci_driver.driver,
9059 &driver_attr_version);
9060 if (rval)
9061 goto err_dcf_attr_ver;
9062
9063 rval = driver_create_file(&megasas_pci_driver.driver,
9064 &driver_attr_release_date);
9065 if (rval)
9066 goto err_dcf_rel_date;
9067
9068 rval = driver_create_file(&megasas_pci_driver.driver,
9069 &driver_attr_support_poll_for_event);
9070 if (rval)
9071 goto err_dcf_support_poll_for_event;
9072
9073 rval = driver_create_file(&megasas_pci_driver.driver,
9074 &driver_attr_dbg_lvl);
9075 if (rval)
9076 goto err_dcf_dbg_lvl;
9077 rval = driver_create_file(&megasas_pci_driver.driver,
9078 &driver_attr_support_device_change);
9079 if (rval)
9080 goto err_dcf_support_device_change;
9081
9082 rval = driver_create_file(&megasas_pci_driver.driver,
9083 &driver_attr_support_nvme_encapsulation);
9084 if (rval)
9085 goto err_dcf_support_nvme_encapsulation;
9086
9087 rval = driver_create_file(&megasas_pci_driver.driver,
9088 &driver_attr_support_pci_lane_margining);
9089 if (rval)
9090 goto err_dcf_support_pci_lane_margining;
9091
9092 return rval;
9093
9094 err_dcf_support_pci_lane_margining:
9095 driver_remove_file(&megasas_pci_driver.driver,
9096 &driver_attr_support_nvme_encapsulation);
9097
9098 err_dcf_support_nvme_encapsulation:
9099 driver_remove_file(&megasas_pci_driver.driver,
9100 &driver_attr_support_device_change);
9101
9102 err_dcf_support_device_change:
9103 driver_remove_file(&megasas_pci_driver.driver,
9104 &driver_attr_dbg_lvl);
9105 err_dcf_dbg_lvl:
9106 driver_remove_file(&megasas_pci_driver.driver,
9107 &driver_attr_support_poll_for_event);
9108 err_dcf_support_poll_for_event:
9109 driver_remove_file(&megasas_pci_driver.driver,
9110 &driver_attr_release_date);
9111 err_dcf_rel_date:
9112 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9113 err_dcf_attr_ver:
9114 pci_unregister_driver(&megasas_pci_driver);
9115 err_pcidrv:
9116 megasas_exit_debugfs();
9117 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9118 return rval;
9119 }
9120
9121 /**
9122 * megasas_exit - Driver unload entry point
9123 */
megasas_exit(void)9124 static void __exit megasas_exit(void)
9125 {
9126 driver_remove_file(&megasas_pci_driver.driver,
9127 &driver_attr_dbg_lvl);
9128 driver_remove_file(&megasas_pci_driver.driver,
9129 &driver_attr_support_poll_for_event);
9130 driver_remove_file(&megasas_pci_driver.driver,
9131 &driver_attr_support_device_change);
9132 driver_remove_file(&megasas_pci_driver.driver,
9133 &driver_attr_release_date);
9134 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9135 driver_remove_file(&megasas_pci_driver.driver,
9136 &driver_attr_support_nvme_encapsulation);
9137 driver_remove_file(&megasas_pci_driver.driver,
9138 &driver_attr_support_pci_lane_margining);
9139
9140 pci_unregister_driver(&megasas_pci_driver);
9141 megasas_exit_debugfs();
9142 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9143 }
9144
9145 module_init(megasas_init);
9146 module_exit(megasas_exit);
9147