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 <linux/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 megasas_priv(scmd)->cmd_priv = 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 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 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 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 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 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,struct queue_limits * lim,bool is_target_prop)1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891 struct queue_limits *lim, 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 if (lim)
1920 lim->dma_alignment = 0x7;
1921 }
1922
1923 mr_device_priv_data->is_tm_capable =
1924 raid->capability.tmCapable;
1925
1926 if (!raid->flags.isEPD)
1927 sdev->no_write_same = 1;
1928
1929 } else if (instance->use_seqnum_jbod_fp) {
1930 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1931 sdev->id;
1932 pd_sync = (void *)fusion->pd_seq_sync
1933 [(instance->pd_seq_map_id - 1) & 1];
1934 mr_device_priv_data->is_tm_capable =
1935 pd_sync->seq[pd_index].capability.tmCapable;
1936 }
1937
1938 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1939 /*
1940 * If FW provides a target reset timeout value, driver will use
1941 * it. If not set, fallback to default values.
1942 */
1943 mr_device_priv_data->target_reset_tmo =
1944 min_t(u8, instance->max_reset_tmo,
1945 instance->tgt_prop->reset_tmo);
1946 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1947 } else {
1948 mr_device_priv_data->target_reset_tmo =
1949 MEGASAS_DEFAULT_TM_TIMEOUT;
1950 mr_device_priv_data->task_abort_tmo =
1951 MEGASAS_DEFAULT_TM_TIMEOUT;
1952 }
1953 }
1954
1955 /*
1956 * megasas_set_nvme_device_properties -
1957 * set nomerges=2
1958 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1959 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1960 *
1961 * MR firmware provides value in KB. Caller of this function converts
1962 * kb into bytes.
1963 *
1964 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1965 * MR firmware provides value 128 as (32 * 4K) = 128K.
1966 *
1967 * @sdev: scsi device
1968 * @max_io_size: maximum io transfer size
1969 *
1970 */
1971 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,struct queue_limits * lim,u32 max_io_size)1972 megasas_set_nvme_device_properties(struct scsi_device *sdev,
1973 struct queue_limits *lim, u32 max_io_size)
1974 {
1975 struct megasas_instance *instance;
1976 u32 mr_nvme_pg_size;
1977
1978 instance = (struct megasas_instance *)sdev->host->hostdata;
1979 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1980 MR_DEFAULT_NVME_PAGE_SIZE);
1981
1982 lim->max_hw_sectors = max_io_size / 512;
1983 lim->virt_boundary_mask = mr_nvme_pg_size - 1;
1984 }
1985
1986 /*
1987 * megasas_set_fw_assisted_qd -
1988 * set device queue depth to can_queue
1989 * set device queue depth to fw assisted qd
1990 *
1991 * @sdev: scsi device
1992 * @is_target_prop true, if fw provided target properties.
1993 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1994 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1995 bool is_target_prop)
1996 {
1997 u8 interface_type;
1998 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1999 u32 tgt_device_qd;
2000 struct megasas_instance *instance;
2001 struct MR_PRIV_DEVICE *mr_device_priv_data;
2002
2003 instance = megasas_lookup_instance(sdev->host->host_no);
2004 mr_device_priv_data = sdev->hostdata;
2005 interface_type = mr_device_priv_data->interface_type;
2006
2007 switch (interface_type) {
2008 case SAS_PD:
2009 device_qd = MEGASAS_SAS_QD;
2010 break;
2011 case SATA_PD:
2012 device_qd = MEGASAS_SATA_QD;
2013 break;
2014 case NVME_PD:
2015 device_qd = MEGASAS_NVME_QD;
2016 break;
2017 }
2018
2019 if (is_target_prop) {
2020 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2021 if (tgt_device_qd)
2022 device_qd = min(instance->host->can_queue,
2023 (int)tgt_device_qd);
2024 }
2025
2026 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2027 device_qd = instance->host->can_queue;
2028
2029 scsi_change_queue_depth(sdev, device_qd);
2030 }
2031
2032 /*
2033 * megasas_set_static_target_properties -
2034 * Device property set by driver are static and it is not required to be
2035 * updated after OCR.
2036 *
2037 * set io timeout
2038 * set device queue depth
2039 * set nvme device properties. see - megasas_set_nvme_device_properties
2040 *
2041 * @sdev: scsi device
2042 * @is_target_prop true, if fw provided target properties.
2043 */
megasas_set_static_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)2044 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2045 struct queue_limits *lim, bool is_target_prop)
2046 {
2047 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2048 struct megasas_instance *instance;
2049
2050 instance = megasas_lookup_instance(sdev->host->host_no);
2051
2052 /*
2053 * The RAID firmware may require extended timeouts.
2054 */
2055 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2056
2057 /* max_io_size_kb will be set to non zero for
2058 * nvme based vd and syspd.
2059 */
2060 if (is_target_prop)
2061 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2062
2063 if (instance->nvme_page_size && max_io_size_kb)
2064 megasas_set_nvme_device_properties(sdev, lim,
2065 max_io_size_kb << 10);
2066
2067 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2068 }
2069
2070
megasas_device_configure(struct scsi_device * sdev,struct queue_limits * lim)2071 static int megasas_device_configure(struct scsi_device *sdev,
2072 struct queue_limits *lim)
2073 {
2074 u16 pd_index = 0;
2075 struct megasas_instance *instance;
2076 int ret_target_prop = DCMD_FAILED;
2077 bool is_target_prop = false;
2078
2079 instance = megasas_lookup_instance(sdev->host->host_no);
2080 if (instance->pd_list_not_supported) {
2081 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2082 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2083 sdev->id;
2084 if (instance->pd_list[pd_index].driveState !=
2085 MR_PD_STATE_SYSTEM)
2086 return -ENXIO;
2087 }
2088 }
2089
2090 mutex_lock(&instance->reset_mutex);
2091 /* Send DCMD to Firmware and cache the information */
2092 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2093 megasas_get_pd_info(instance, sdev);
2094
2095 /* Some ventura firmware may not have instance->nvme_page_size set.
2096 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2097 */
2098 if ((instance->tgt_prop) && (instance->nvme_page_size))
2099 ret_target_prop = megasas_get_target_prop(instance, sdev);
2100
2101 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2102 megasas_set_static_target_properties(sdev, lim, is_target_prop);
2103
2104 /* This sdev property may change post OCR */
2105 megasas_set_dynamic_target_properties(sdev, lim, is_target_prop);
2106
2107 if (!MEGASAS_IS_LOGICAL(sdev))
2108 sdev->no_vpd_size = 1;
2109
2110 mutex_unlock(&instance->reset_mutex);
2111
2112 return 0;
2113 }
2114
megasas_slave_alloc(struct scsi_device * sdev)2115 static int megasas_slave_alloc(struct scsi_device *sdev)
2116 {
2117 u16 pd_index = 0, ld_tgt_id;
2118 struct megasas_instance *instance ;
2119 struct MR_PRIV_DEVICE *mr_device_priv_data;
2120
2121 instance = megasas_lookup_instance(sdev->host->host_no);
2122 if (!MEGASAS_IS_LOGICAL(sdev)) {
2123 /*
2124 * Open the OS scan to the SYSTEM PD
2125 */
2126 pd_index =
2127 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2128 sdev->id;
2129 if ((instance->pd_list_not_supported ||
2130 instance->pd_list[pd_index].driveState ==
2131 MR_PD_STATE_SYSTEM)) {
2132 goto scan_target;
2133 }
2134 return -ENXIO;
2135 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2136 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2137 return -ENXIO;
2138 }
2139
2140 scan_target:
2141 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2142 GFP_KERNEL);
2143 if (!mr_device_priv_data)
2144 return -ENOMEM;
2145
2146 if (MEGASAS_IS_LOGICAL(sdev)) {
2147 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2148 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2149 if (megasas_dbg_lvl & LD_PD_DEBUG)
2150 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2151 }
2152
2153 sdev->hostdata = mr_device_priv_data;
2154
2155 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2156 instance->r1_ldio_hint_default);
2157 return 0;
2158 }
2159
megasas_slave_destroy(struct scsi_device * sdev)2160 static void megasas_slave_destroy(struct scsi_device *sdev)
2161 {
2162 u16 ld_tgt_id;
2163 struct megasas_instance *instance;
2164
2165 instance = megasas_lookup_instance(sdev->host->host_no);
2166
2167 if (MEGASAS_IS_LOGICAL(sdev)) {
2168 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2169 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2170 return;
2171 }
2172 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2173 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2174 if (megasas_dbg_lvl & LD_PD_DEBUG)
2175 sdev_printk(KERN_INFO, sdev,
2176 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2177 }
2178
2179 kfree(sdev->hostdata);
2180 sdev->hostdata = NULL;
2181 }
2182
2183 /*
2184 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2185 * kill adapter
2186 * @instance: Adapter soft state
2187 *
2188 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2189 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2190 {
2191 int i;
2192 struct megasas_cmd *cmd_mfi;
2193 struct megasas_cmd_fusion *cmd_fusion;
2194 struct fusion_context *fusion = instance->ctrl_context;
2195
2196 /* Find all outstanding ioctls */
2197 if (fusion) {
2198 for (i = 0; i < instance->max_fw_cmds; i++) {
2199 cmd_fusion = fusion->cmd_list[i];
2200 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2201 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2202 if (cmd_mfi->sync_cmd &&
2203 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2204 cmd_mfi->frame->hdr.cmd_status =
2205 MFI_STAT_WRONG_STATE;
2206 megasas_complete_cmd(instance,
2207 cmd_mfi, DID_OK);
2208 }
2209 }
2210 }
2211 } else {
2212 for (i = 0; i < instance->max_fw_cmds; i++) {
2213 cmd_mfi = instance->cmd_list[i];
2214 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2215 MFI_CMD_ABORT)
2216 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2217 }
2218 }
2219 }
2220
2221
megaraid_sas_kill_hba(struct megasas_instance * instance)2222 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2223 {
2224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2225 dev_warn(&instance->pdev->dev,
2226 "Adapter already dead, skipping kill HBA\n");
2227 return;
2228 }
2229
2230 /* Set critical error to block I/O & ioctls in case caller didn't */
2231 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2232 /* Wait 1 second to ensure IO or ioctls in build have posted */
2233 msleep(1000);
2234 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2235 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2236 (instance->adapter_type != MFI_SERIES)) {
2237 if (!instance->requestorId) {
2238 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2239 /* Flush */
2240 readl(&instance->reg_set->doorbell);
2241 }
2242 if (instance->requestorId && instance->peerIsPresent)
2243 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2244 } else {
2245 writel(MFI_STOP_ADP,
2246 &instance->reg_set->inbound_doorbell);
2247 }
2248 /* Complete outstanding ioctls when adapter is killed */
2249 megasas_complete_outstanding_ioctls(instance);
2250 }
2251
2252 /**
2253 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2254 * restored to max value
2255 * @instance: Adapter soft state
2256 *
2257 */
2258 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2259 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2260 {
2261 unsigned long flags;
2262
2263 if (instance->flag & MEGASAS_FW_BUSY
2264 && time_after(jiffies, instance->last_time + 5 * HZ)
2265 && atomic_read(&instance->fw_outstanding) <
2266 instance->throttlequeuedepth + 1) {
2267
2268 spin_lock_irqsave(instance->host->host_lock, flags);
2269 instance->flag &= ~MEGASAS_FW_BUSY;
2270
2271 instance->host->can_queue = instance->cur_can_queue;
2272 spin_unlock_irqrestore(instance->host->host_lock, flags);
2273 }
2274 }
2275
2276 /**
2277 * megasas_complete_cmd_dpc - Returns FW's controller structure
2278 * @instance_addr: Address of adapter soft state
2279 *
2280 * Tasklet to complete cmds
2281 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2282 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2283 {
2284 u32 producer;
2285 u32 consumer;
2286 u32 context;
2287 struct megasas_cmd *cmd;
2288 struct megasas_instance *instance =
2289 (struct megasas_instance *)instance_addr;
2290 unsigned long flags;
2291
2292 /* If we have already declared adapter dead, donot complete cmds */
2293 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2294 return;
2295
2296 spin_lock_irqsave(&instance->completion_lock, flags);
2297
2298 producer = le32_to_cpu(*instance->producer);
2299 consumer = le32_to_cpu(*instance->consumer);
2300
2301 while (consumer != producer) {
2302 context = le32_to_cpu(instance->reply_queue[consumer]);
2303 if (context >= instance->max_fw_cmds) {
2304 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2305 context);
2306 BUG();
2307 }
2308
2309 cmd = instance->cmd_list[context];
2310
2311 megasas_complete_cmd(instance, cmd, DID_OK);
2312
2313 consumer++;
2314 if (consumer == (instance->max_fw_cmds + 1)) {
2315 consumer = 0;
2316 }
2317 }
2318
2319 *instance->consumer = cpu_to_le32(producer);
2320
2321 spin_unlock_irqrestore(&instance->completion_lock, flags);
2322
2323 /*
2324 * Check if we can restore can_queue
2325 */
2326 megasas_check_and_restore_queue_depth(instance);
2327 }
2328
2329 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2330
2331 /**
2332 * megasas_start_timer - Initializes sriov heartbeat timer object
2333 * @instance: Adapter soft state
2334 *
2335 */
megasas_start_timer(struct megasas_instance * instance)2336 void megasas_start_timer(struct megasas_instance *instance)
2337 {
2338 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2339
2340 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2341 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2342 add_timer(timer);
2343 }
2344
2345 static void
2346 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2347
2348 static void
2349 process_fw_state_change_wq(struct work_struct *work);
2350
megasas_do_ocr(struct megasas_instance * instance)2351 static void megasas_do_ocr(struct megasas_instance *instance)
2352 {
2353 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2354 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2355 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2356 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2357 }
2358 instance->instancet->disable_intr(instance);
2359 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2360 instance->issuepend_done = 0;
2361
2362 atomic_set(&instance->fw_outstanding, 0);
2363 megasas_internal_reset_defer_cmds(instance);
2364 process_fw_state_change_wq(&instance->work_init);
2365 }
2366
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2367 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2368 int initial)
2369 {
2370 struct megasas_cmd *cmd;
2371 struct megasas_dcmd_frame *dcmd;
2372 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2373 dma_addr_t new_affiliation_111_h;
2374 int ld, retval = 0;
2375 u8 thisVf;
2376
2377 cmd = megasas_get_cmd(instance);
2378
2379 if (!cmd) {
2380 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2381 "Failed to get cmd for scsi%d\n",
2382 instance->host->host_no);
2383 return -ENOMEM;
2384 }
2385
2386 dcmd = &cmd->frame->dcmd;
2387
2388 if (!instance->vf_affiliation_111) {
2389 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2390 "affiliation for scsi%d\n", instance->host->host_no);
2391 megasas_return_cmd(instance, cmd);
2392 return -ENOMEM;
2393 }
2394
2395 if (initial)
2396 memset(instance->vf_affiliation_111, 0,
2397 sizeof(struct MR_LD_VF_AFFILIATION_111));
2398 else {
2399 new_affiliation_111 =
2400 dma_alloc_coherent(&instance->pdev->dev,
2401 sizeof(struct MR_LD_VF_AFFILIATION_111),
2402 &new_affiliation_111_h, GFP_KERNEL);
2403 if (!new_affiliation_111) {
2404 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2405 "memory for new affiliation for scsi%d\n",
2406 instance->host->host_no);
2407 megasas_return_cmd(instance, cmd);
2408 return -ENOMEM;
2409 }
2410 }
2411
2412 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2413
2414 dcmd->cmd = MFI_CMD_DCMD;
2415 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2416 dcmd->sge_count = 1;
2417 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2418 dcmd->timeout = 0;
2419 dcmd->pad_0 = 0;
2420 dcmd->data_xfer_len =
2421 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2422 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2423
2424 if (initial)
2425 dcmd->sgl.sge32[0].phys_addr =
2426 cpu_to_le32(instance->vf_affiliation_111_h);
2427 else
2428 dcmd->sgl.sge32[0].phys_addr =
2429 cpu_to_le32(new_affiliation_111_h);
2430
2431 dcmd->sgl.sge32[0].length = cpu_to_le32(
2432 sizeof(struct MR_LD_VF_AFFILIATION_111));
2433
2434 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2435 "scsi%d\n", instance->host->host_no);
2436
2437 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2438 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2439 " failed with status 0x%x for scsi%d\n",
2440 dcmd->cmd_status, instance->host->host_no);
2441 retval = 1; /* Do a scan if we couldn't get affiliation */
2442 goto out;
2443 }
2444
2445 if (!initial) {
2446 thisVf = new_affiliation_111->thisVf;
2447 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2448 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2449 new_affiliation_111->map[ld].policy[thisVf]) {
2450 dev_warn(&instance->pdev->dev, "SR-IOV: "
2451 "Got new LD/VF affiliation for scsi%d\n",
2452 instance->host->host_no);
2453 memcpy(instance->vf_affiliation_111,
2454 new_affiliation_111,
2455 sizeof(struct MR_LD_VF_AFFILIATION_111));
2456 retval = 1;
2457 goto out;
2458 }
2459 }
2460 out:
2461 if (new_affiliation_111) {
2462 dma_free_coherent(&instance->pdev->dev,
2463 sizeof(struct MR_LD_VF_AFFILIATION_111),
2464 new_affiliation_111,
2465 new_affiliation_111_h);
2466 }
2467
2468 megasas_return_cmd(instance, cmd);
2469
2470 return retval;
2471 }
2472
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2473 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2474 int initial)
2475 {
2476 struct megasas_cmd *cmd;
2477 struct megasas_dcmd_frame *dcmd;
2478 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2479 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2480 dma_addr_t new_affiliation_h;
2481 int i, j, retval = 0, found = 0, doscan = 0;
2482 u8 thisVf;
2483
2484 cmd = megasas_get_cmd(instance);
2485
2486 if (!cmd) {
2487 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2488 "Failed to get cmd for scsi%d\n",
2489 instance->host->host_no);
2490 return -ENOMEM;
2491 }
2492
2493 dcmd = &cmd->frame->dcmd;
2494
2495 if (!instance->vf_affiliation) {
2496 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2497 "affiliation for scsi%d\n", instance->host->host_no);
2498 megasas_return_cmd(instance, cmd);
2499 return -ENOMEM;
2500 }
2501
2502 if (initial)
2503 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2504 sizeof(struct MR_LD_VF_AFFILIATION));
2505 else {
2506 new_affiliation =
2507 dma_alloc_coherent(&instance->pdev->dev,
2508 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2509 &new_affiliation_h, GFP_KERNEL);
2510 if (!new_affiliation) {
2511 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2512 "memory for new affiliation for scsi%d\n",
2513 instance->host->host_no);
2514 megasas_return_cmd(instance, cmd);
2515 return -ENOMEM;
2516 }
2517 }
2518
2519 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2520
2521 dcmd->cmd = MFI_CMD_DCMD;
2522 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2523 dcmd->sge_count = 1;
2524 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2525 dcmd->timeout = 0;
2526 dcmd->pad_0 = 0;
2527 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2528 sizeof(struct MR_LD_VF_AFFILIATION));
2529 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2530
2531 if (initial)
2532 dcmd->sgl.sge32[0].phys_addr =
2533 cpu_to_le32(instance->vf_affiliation_h);
2534 else
2535 dcmd->sgl.sge32[0].phys_addr =
2536 cpu_to_le32(new_affiliation_h);
2537
2538 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2539 sizeof(struct MR_LD_VF_AFFILIATION));
2540
2541 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2542 "scsi%d\n", instance->host->host_no);
2543
2544
2545 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2546 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2547 " failed with status 0x%x for scsi%d\n",
2548 dcmd->cmd_status, instance->host->host_no);
2549 retval = 1; /* Do a scan if we couldn't get affiliation */
2550 goto out;
2551 }
2552
2553 if (!initial) {
2554 if (!new_affiliation->ldCount) {
2555 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2556 "affiliation for passive path for scsi%d\n",
2557 instance->host->host_no);
2558 retval = 1;
2559 goto out;
2560 }
2561 newmap = new_affiliation->map;
2562 savedmap = instance->vf_affiliation->map;
2563 thisVf = new_affiliation->thisVf;
2564 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2565 found = 0;
2566 for (j = 0; j < instance->vf_affiliation->ldCount;
2567 j++) {
2568 if (newmap->ref.targetId ==
2569 savedmap->ref.targetId) {
2570 found = 1;
2571 if (newmap->policy[thisVf] !=
2572 savedmap->policy[thisVf]) {
2573 doscan = 1;
2574 goto out;
2575 }
2576 }
2577 savedmap = (struct MR_LD_VF_MAP *)
2578 ((unsigned char *)savedmap +
2579 savedmap->size);
2580 }
2581 if (!found && newmap->policy[thisVf] !=
2582 MR_LD_ACCESS_HIDDEN) {
2583 doscan = 1;
2584 goto out;
2585 }
2586 newmap = (struct MR_LD_VF_MAP *)
2587 ((unsigned char *)newmap + newmap->size);
2588 }
2589
2590 newmap = new_affiliation->map;
2591 savedmap = instance->vf_affiliation->map;
2592
2593 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2594 found = 0;
2595 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2596 if (savedmap->ref.targetId ==
2597 newmap->ref.targetId) {
2598 found = 1;
2599 if (savedmap->policy[thisVf] !=
2600 newmap->policy[thisVf]) {
2601 doscan = 1;
2602 goto out;
2603 }
2604 }
2605 newmap = (struct MR_LD_VF_MAP *)
2606 ((unsigned char *)newmap +
2607 newmap->size);
2608 }
2609 if (!found && savedmap->policy[thisVf] !=
2610 MR_LD_ACCESS_HIDDEN) {
2611 doscan = 1;
2612 goto out;
2613 }
2614 savedmap = (struct MR_LD_VF_MAP *)
2615 ((unsigned char *)savedmap +
2616 savedmap->size);
2617 }
2618 }
2619 out:
2620 if (doscan) {
2621 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2622 "affiliation for scsi%d\n", instance->host->host_no);
2623 memcpy(instance->vf_affiliation, new_affiliation,
2624 new_affiliation->size);
2625 retval = 1;
2626 }
2627
2628 if (new_affiliation)
2629 dma_free_coherent(&instance->pdev->dev,
2630 (MAX_LOGICAL_DRIVES + 1) *
2631 sizeof(struct MR_LD_VF_AFFILIATION),
2632 new_affiliation, new_affiliation_h);
2633 megasas_return_cmd(instance, cmd);
2634
2635 return retval;
2636 }
2637
2638 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2639 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2640 int initial)
2641 {
2642 int retval;
2643
2644 if (instance->PlasmaFW111)
2645 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2646 else
2647 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2648 return retval;
2649 }
2650
2651 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2652 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2653 int initial)
2654 {
2655 struct megasas_cmd *cmd;
2656 struct megasas_dcmd_frame *dcmd;
2657 int retval = 0;
2658
2659 cmd = megasas_get_cmd(instance);
2660
2661 if (!cmd) {
2662 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2663 "Failed to get cmd for scsi%d\n",
2664 instance->host->host_no);
2665 return -ENOMEM;
2666 }
2667
2668 dcmd = &cmd->frame->dcmd;
2669
2670 if (initial) {
2671 instance->hb_host_mem =
2672 dma_alloc_coherent(&instance->pdev->dev,
2673 sizeof(struct MR_CTRL_HB_HOST_MEM),
2674 &instance->hb_host_mem_h,
2675 GFP_KERNEL);
2676 if (!instance->hb_host_mem) {
2677 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2678 " memory for heartbeat host memory for scsi%d\n",
2679 instance->host->host_no);
2680 retval = -ENOMEM;
2681 goto out;
2682 }
2683 }
2684
2685 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2686
2687 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2688 dcmd->cmd = MFI_CMD_DCMD;
2689 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2690 dcmd->sge_count = 1;
2691 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2692 dcmd->timeout = 0;
2693 dcmd->pad_0 = 0;
2694 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2695 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2696
2697 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2698 sizeof(struct MR_CTRL_HB_HOST_MEM));
2699
2700 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2701 instance->host->host_no);
2702
2703 if ((instance->adapter_type != MFI_SERIES) &&
2704 !instance->mask_interrupts)
2705 retval = megasas_issue_blocked_cmd(instance, cmd,
2706 MEGASAS_ROUTINE_WAIT_TIME_VF);
2707 else
2708 retval = megasas_issue_polled(instance, cmd);
2709
2710 if (retval) {
2711 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2712 "_MEM_ALLOC DCMD %s for scsi%d\n",
2713 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2714 "timed out" : "failed", instance->host->host_no);
2715 retval = 1;
2716 }
2717
2718 out:
2719 megasas_return_cmd(instance, cmd);
2720
2721 return retval;
2722 }
2723
2724 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2725 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2726 {
2727 struct megasas_instance *instance =
2728 from_timer(instance, t, sriov_heartbeat_timer);
2729
2730 if (instance->hb_host_mem->HB.fwCounter !=
2731 instance->hb_host_mem->HB.driverCounter) {
2732 instance->hb_host_mem->HB.driverCounter =
2733 instance->hb_host_mem->HB.fwCounter;
2734 mod_timer(&instance->sriov_heartbeat_timer,
2735 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2736 } else {
2737 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2738 "completed for scsi%d\n", instance->host->host_no);
2739 schedule_work(&instance->work_init);
2740 }
2741 }
2742
2743 /**
2744 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2745 * @instance: Adapter soft state
2746 *
2747 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2748 * complete all its outstanding commands. Returns error if one or more IOs
2749 * are pending after this time period. It also marks the controller dead.
2750 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2751 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2752 {
2753 int i, sl, outstanding;
2754 u32 reset_index;
2755 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2756 unsigned long flags;
2757 struct list_head clist_local;
2758 struct megasas_cmd *reset_cmd;
2759 u32 fw_state;
2760
2761 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2762 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2763 __func__, __LINE__);
2764 return FAILED;
2765 }
2766
2767 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2768
2769 INIT_LIST_HEAD(&clist_local);
2770 spin_lock_irqsave(&instance->hba_lock, flags);
2771 list_splice_init(&instance->internal_reset_pending_q,
2772 &clist_local);
2773 spin_unlock_irqrestore(&instance->hba_lock, flags);
2774
2775 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2776 for (i = 0; i < wait_time; i++) {
2777 msleep(1000);
2778 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2779 break;
2780 }
2781
2782 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2783 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2784 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2785 return FAILED;
2786 }
2787
2788 reset_index = 0;
2789 while (!list_empty(&clist_local)) {
2790 reset_cmd = list_entry((&clist_local)->next,
2791 struct megasas_cmd, list);
2792 list_del_init(&reset_cmd->list);
2793 if (reset_cmd->scmd) {
2794 reset_cmd->scmd->result = DID_REQUEUE << 16;
2795 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2796 reset_index, reset_cmd,
2797 reset_cmd->scmd->cmnd[0]);
2798
2799 scsi_done(reset_cmd->scmd);
2800 megasas_return_cmd(instance, reset_cmd);
2801 } else if (reset_cmd->sync_cmd) {
2802 dev_notice(&instance->pdev->dev, "%p synch cmds"
2803 "reset queue\n",
2804 reset_cmd);
2805
2806 reset_cmd->cmd_status_drv = DCMD_INIT;
2807 instance->instancet->fire_cmd(instance,
2808 reset_cmd->frame_phys_addr,
2809 0, instance->reg_set);
2810 } else {
2811 dev_notice(&instance->pdev->dev, "%p unexpected"
2812 "cmds lst\n",
2813 reset_cmd);
2814 }
2815 reset_index++;
2816 }
2817
2818 return SUCCESS;
2819 }
2820
2821 for (i = 0; i < resetwaittime; i++) {
2822 outstanding = atomic_read(&instance->fw_outstanding);
2823
2824 if (!outstanding)
2825 break;
2826
2827 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2828 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2829 "commands to complete\n",i,outstanding);
2830 /*
2831 * Call cmd completion routine. Cmd to be
2832 * be completed directly without depending on isr.
2833 */
2834 megasas_complete_cmd_dpc((unsigned long)instance);
2835 }
2836
2837 msleep(1000);
2838 }
2839
2840 i = 0;
2841 outstanding = atomic_read(&instance->fw_outstanding);
2842 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2843
2844 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2845 goto no_outstanding;
2846
2847 if (instance->disableOnlineCtrlReset)
2848 goto kill_hba_and_failed;
2849 do {
2850 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2851 dev_info(&instance->pdev->dev,
2852 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2853 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2854 if (i == 3)
2855 goto kill_hba_and_failed;
2856 megasas_do_ocr(instance);
2857
2858 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2859 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2860 __func__, __LINE__);
2861 return FAILED;
2862 }
2863 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2864 __func__, __LINE__);
2865
2866 for (sl = 0; sl < 10; sl++)
2867 msleep(500);
2868
2869 outstanding = atomic_read(&instance->fw_outstanding);
2870
2871 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2872 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2873 goto no_outstanding;
2874 }
2875 i++;
2876 } while (i <= 3);
2877
2878 no_outstanding:
2879
2880 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2881 __func__, __LINE__);
2882 return SUCCESS;
2883
2884 kill_hba_and_failed:
2885
2886 /* Reset not supported, kill adapter */
2887 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2888 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2889 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2890 atomic_read(&instance->fw_outstanding));
2891 megasas_dump_pending_frames(instance);
2892 megaraid_sas_kill_hba(instance);
2893
2894 return FAILED;
2895 }
2896
2897 /**
2898 * megasas_generic_reset - Generic reset routine
2899 * @scmd: Mid-layer SCSI command
2900 *
2901 * This routine implements a generic reset handler for device, bus and host
2902 * reset requests. Device, bus and host specific reset handlers can use this
2903 * function after they do their specific tasks.
2904 */
megasas_generic_reset(struct scsi_cmnd * scmd)2905 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2906 {
2907 int ret_val;
2908 struct megasas_instance *instance;
2909
2910 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2911
2912 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2913 scmd->cmnd[0], scmd->retries);
2914
2915 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2916 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2917 return FAILED;
2918 }
2919
2920 ret_val = megasas_wait_for_outstanding(instance);
2921 if (ret_val == SUCCESS)
2922 dev_notice(&instance->pdev->dev, "reset successful\n");
2923 else
2924 dev_err(&instance->pdev->dev, "failed to do reset\n");
2925
2926 return ret_val;
2927 }
2928
2929 /**
2930 * megasas_reset_timer - quiesce the adapter if required
2931 * @scmd: scsi cmnd
2932 *
2933 * Sets the FW busy flag and reduces the host->can_queue if the
2934 * cmd has not been completed within the timeout period.
2935 */
megasas_reset_timer(struct scsi_cmnd * scmd)2936 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2937 {
2938 struct megasas_instance *instance;
2939 unsigned long flags;
2940
2941 if (time_after(jiffies, scmd->jiffies_at_alloc +
2942 (scmd_timeout * 2) * HZ)) {
2943 return SCSI_EH_NOT_HANDLED;
2944 }
2945
2946 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2947 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2948 /* FW is busy, throttle IO */
2949 spin_lock_irqsave(instance->host->host_lock, flags);
2950
2951 instance->host->can_queue = instance->throttlequeuedepth;
2952 instance->last_time = jiffies;
2953 instance->flag |= MEGASAS_FW_BUSY;
2954
2955 spin_unlock_irqrestore(instance->host->host_lock, flags);
2956 }
2957 return SCSI_EH_RESET_TIMER;
2958 }
2959
2960 /**
2961 * megasas_dump - This function will print hexdump of provided buffer.
2962 * @buf: Buffer to be dumped
2963 * @sz: Size in bytes
2964 * @format: Different formats of dumping e.g. format=n will
2965 * cause only 'n' 32 bit words to be dumped in a single
2966 * line.
2967 */
2968 inline void
megasas_dump(void * buf,int sz,int format)2969 megasas_dump(void *buf, int sz, int format)
2970 {
2971 int i;
2972 __le32 *buf_loc = (__le32 *)buf;
2973
2974 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2975 if ((i % format) == 0) {
2976 if (i != 0)
2977 printk(KERN_CONT "\n");
2978 printk(KERN_CONT "%08x: ", (i * 4));
2979 }
2980 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2981 }
2982 printk(KERN_CONT "\n");
2983 }
2984
2985 /**
2986 * megasas_dump_reg_set - This function will print hexdump of register set
2987 * @reg_set: Register set to be dumped
2988 */
2989 inline void
megasas_dump_reg_set(void __iomem * reg_set)2990 megasas_dump_reg_set(void __iomem *reg_set)
2991 {
2992 unsigned int i, sz = 256;
2993 u32 __iomem *reg = (u32 __iomem *)reg_set;
2994
2995 for (i = 0; i < (sz / sizeof(u32)); i++)
2996 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2997 }
2998
2999 /**
3000 * megasas_dump_fusion_io - This function will print key details
3001 * of SCSI IO
3002 * @scmd: SCSI command pointer of SCSI IO
3003 */
3004 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3005 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3006 {
3007 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3008 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3009 struct megasas_instance *instance;
3010
3011 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3012
3013 scmd_printk(KERN_INFO, scmd,
3014 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3015 scmd, scmd->retries, scmd->allowed);
3016 scsi_print_command(scmd);
3017
3018 if (cmd) {
3019 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3020 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3021 scmd_printk(KERN_INFO, scmd,
3022 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3023 req_desc->SCSIIO.RequestFlags,
3024 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3025 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3026
3027 printk(KERN_INFO "IO request frame:\n");
3028 megasas_dump(cmd->io_request,
3029 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3030 printk(KERN_INFO "Chain frame:\n");
3031 megasas_dump(cmd->sg_frame,
3032 instance->max_chain_frame_sz, 8);
3033 }
3034
3035 }
3036
3037 /*
3038 * megasas_dump_sys_regs - This function will dump system registers through
3039 * sysfs.
3040 * @reg_set: Pointer to System register set.
3041 * @buf: Buffer to which output is to be written.
3042 * @return: Number of bytes written to buffer.
3043 */
3044 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3045 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3046 {
3047 unsigned int i, sz = 256;
3048 int bytes_wrote = 0;
3049 char *loc = (char *)buf;
3050 u32 __iomem *reg = (u32 __iomem *)reg_set;
3051
3052 for (i = 0; i < sz / sizeof(u32); i++) {
3053 bytes_wrote += scnprintf(loc + bytes_wrote,
3054 PAGE_SIZE - bytes_wrote,
3055 "%08x: %08x\n", (i * 4),
3056 readl(®[i]));
3057 }
3058 return bytes_wrote;
3059 }
3060
3061 /**
3062 * megasas_reset_bus_host - Bus & host reset handler entry point
3063 * @scmd: Mid-layer SCSI command
3064 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3065 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3066 {
3067 int ret;
3068 struct megasas_instance *instance;
3069
3070 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3071
3072 scmd_printk(KERN_INFO, scmd,
3073 "OCR is requested due to IO timeout!!\n");
3074
3075 scmd_printk(KERN_INFO, scmd,
3076 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3077 scmd->device->host->shost_state,
3078 scsi_host_busy(scmd->device->host),
3079 atomic_read(&instance->fw_outstanding));
3080 /*
3081 * First wait for all commands to complete
3082 */
3083 if (instance->adapter_type == MFI_SERIES) {
3084 ret = megasas_generic_reset(scmd);
3085 } else {
3086 megasas_dump_fusion_io(scmd);
3087 ret = megasas_reset_fusion(scmd->device->host,
3088 SCSIIO_TIMEOUT_OCR);
3089 }
3090
3091 return ret;
3092 }
3093
3094 /**
3095 * megasas_task_abort - Issues task abort request to firmware
3096 * (supported only for fusion adapters)
3097 * @scmd: SCSI command pointer
3098 */
megasas_task_abort(struct scsi_cmnd * scmd)3099 static int megasas_task_abort(struct scsi_cmnd *scmd)
3100 {
3101 int ret;
3102 struct megasas_instance *instance;
3103
3104 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3105
3106 if (instance->adapter_type != MFI_SERIES)
3107 ret = megasas_task_abort_fusion(scmd);
3108 else {
3109 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3110 ret = FAILED;
3111 }
3112
3113 return ret;
3114 }
3115
3116 /**
3117 * megasas_reset_target: Issues target reset request to firmware
3118 * (supported only for fusion adapters)
3119 * @scmd: SCSI command pointer
3120 */
megasas_reset_target(struct scsi_cmnd * scmd)3121 static int megasas_reset_target(struct scsi_cmnd *scmd)
3122 {
3123 int ret;
3124 struct megasas_instance *instance;
3125
3126 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3127
3128 if (instance->adapter_type != MFI_SERIES)
3129 ret = megasas_reset_target_fusion(scmd);
3130 else {
3131 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3132 ret = FAILED;
3133 }
3134
3135 return ret;
3136 }
3137
3138 /**
3139 * megasas_bios_param - Returns disk geometry for a disk
3140 * @sdev: device handle
3141 * @bdev: block device
3142 * @capacity: drive capacity
3143 * @geom: geometry parameters
3144 */
3145 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3146 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3147 sector_t capacity, int geom[])
3148 {
3149 int heads;
3150 int sectors;
3151 sector_t cylinders;
3152 unsigned long tmp;
3153
3154 /* Default heads (64) & sectors (32) */
3155 heads = 64;
3156 sectors = 32;
3157
3158 tmp = heads * sectors;
3159 cylinders = capacity;
3160
3161 sector_div(cylinders, tmp);
3162
3163 /*
3164 * Handle extended translation size for logical drives > 1Gb
3165 */
3166
3167 if (capacity >= 0x200000) {
3168 heads = 255;
3169 sectors = 63;
3170 tmp = heads*sectors;
3171 cylinders = capacity;
3172 sector_div(cylinders, tmp);
3173 }
3174
3175 geom[0] = heads;
3176 geom[1] = sectors;
3177 geom[2] = cylinders;
3178
3179 return 0;
3180 }
3181
megasas_map_queues(struct Scsi_Host * shost)3182 static void megasas_map_queues(struct Scsi_Host *shost)
3183 {
3184 struct megasas_instance *instance;
3185 int qoff = 0, offset;
3186 struct blk_mq_queue_map *map;
3187
3188 instance = (struct megasas_instance *)shost->hostdata;
3189
3190 if (shost->nr_hw_queues == 1)
3191 return;
3192
3193 offset = instance->low_latency_index_start;
3194
3195 /* Setup Default hctx */
3196 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3197 map->nr_queues = instance->msix_vectors - offset;
3198 map->queue_offset = 0;
3199 blk_mq_pci_map_queues(map, instance->pdev, offset);
3200 qoff += map->nr_queues;
3201 offset += map->nr_queues;
3202
3203 /* we never use READ queue, so can't cheat blk-mq */
3204 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3205
3206 /* Setup Poll hctx */
3207 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3208 map->nr_queues = instance->iopoll_q_count;
3209 if (map->nr_queues) {
3210 /*
3211 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3212 * affinity), so use the regular blk-mq cpu mapping
3213 */
3214 map->queue_offset = qoff;
3215 blk_mq_map_queues(map);
3216 }
3217 }
3218
3219 static void megasas_aen_polling(struct work_struct *work);
3220
3221 /**
3222 * megasas_service_aen - Processes an event notification
3223 * @instance: Adapter soft state
3224 * @cmd: AEN command completed by the ISR
3225 *
3226 * For AEN, driver sends a command down to FW that is held by the FW till an
3227 * event occurs. When an event of interest occurs, FW completes the command
3228 * that it was previously holding.
3229 *
3230 * This routines sends SIGIO signal to processes that have registered with the
3231 * driver for AEN.
3232 */
3233 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3234 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3235 {
3236 unsigned long flags;
3237
3238 /*
3239 * Don't signal app if it is just an aborted previously registered aen
3240 */
3241 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3242 spin_lock_irqsave(&poll_aen_lock, flags);
3243 megasas_poll_wait_aen = 1;
3244 spin_unlock_irqrestore(&poll_aen_lock, flags);
3245 wake_up(&megasas_poll_wait);
3246 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3247 }
3248 else
3249 cmd->abort_aen = 0;
3250
3251 instance->aen_cmd = NULL;
3252
3253 megasas_return_cmd(instance, cmd);
3254
3255 if ((instance->unload == 0) &&
3256 ((instance->issuepend_done == 1))) {
3257 struct megasas_aen_event *ev;
3258
3259 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3260 if (!ev) {
3261 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3262 } else {
3263 ev->instance = instance;
3264 instance->ev = ev;
3265 INIT_DELAYED_WORK(&ev->hotplug_work,
3266 megasas_aen_polling);
3267 schedule_delayed_work(&ev->hotplug_work, 0);
3268 }
3269 }
3270 }
3271
3272 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3273 fw_crash_buffer_store(struct device *cdev,
3274 struct device_attribute *attr, const char *buf, size_t count)
3275 {
3276 struct Scsi_Host *shost = class_to_shost(cdev);
3277 struct megasas_instance *instance =
3278 (struct megasas_instance *) shost->hostdata;
3279 int val = 0;
3280
3281 if (kstrtoint(buf, 0, &val) != 0)
3282 return -EINVAL;
3283
3284 mutex_lock(&instance->crashdump_lock);
3285 instance->fw_crash_buffer_offset = val;
3286 mutex_unlock(&instance->crashdump_lock);
3287 return strlen(buf);
3288 }
3289
3290 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3291 fw_crash_buffer_show(struct device *cdev,
3292 struct device_attribute *attr, char *buf)
3293 {
3294 struct Scsi_Host *shost = class_to_shost(cdev);
3295 struct megasas_instance *instance =
3296 (struct megasas_instance *) shost->hostdata;
3297 u32 size;
3298 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3299 unsigned long chunk_left_bytes;
3300 unsigned long src_addr;
3301 u32 buff_offset;
3302
3303 mutex_lock(&instance->crashdump_lock);
3304 buff_offset = instance->fw_crash_buffer_offset;
3305 if (!instance->crash_dump_buf ||
3306 !((instance->fw_crash_state == AVAILABLE) ||
3307 (instance->fw_crash_state == COPYING))) {
3308 dev_err(&instance->pdev->dev,
3309 "Firmware crash dump is not available\n");
3310 mutex_unlock(&instance->crashdump_lock);
3311 return -EINVAL;
3312 }
3313
3314 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3315 dev_err(&instance->pdev->dev,
3316 "Firmware crash dump offset is out of range\n");
3317 mutex_unlock(&instance->crashdump_lock);
3318 return 0;
3319 }
3320
3321 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3322 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3323 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3324 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3325
3326 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3327 (buff_offset % dmachunk);
3328 memcpy(buf, (void *)src_addr, size);
3329 mutex_unlock(&instance->crashdump_lock);
3330
3331 return size;
3332 }
3333
3334 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3335 fw_crash_buffer_size_show(struct device *cdev,
3336 struct device_attribute *attr, char *buf)
3337 {
3338 struct Scsi_Host *shost = class_to_shost(cdev);
3339 struct megasas_instance *instance =
3340 (struct megasas_instance *) shost->hostdata;
3341
3342 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3343 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3344 }
3345
3346 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3347 fw_crash_state_store(struct device *cdev,
3348 struct device_attribute *attr, const char *buf, size_t count)
3349 {
3350 struct Scsi_Host *shost = class_to_shost(cdev);
3351 struct megasas_instance *instance =
3352 (struct megasas_instance *) shost->hostdata;
3353 int val = 0;
3354
3355 if (kstrtoint(buf, 0, &val) != 0)
3356 return -EINVAL;
3357
3358 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3359 dev_err(&instance->pdev->dev, "application updates invalid "
3360 "firmware crash state\n");
3361 return -EINVAL;
3362 }
3363
3364 instance->fw_crash_state = val;
3365
3366 if ((val == COPIED) || (val == COPY_ERROR)) {
3367 mutex_lock(&instance->crashdump_lock);
3368 megasas_free_host_crash_buffer(instance);
3369 mutex_unlock(&instance->crashdump_lock);
3370 if (val == COPY_ERROR)
3371 dev_info(&instance->pdev->dev, "application failed to "
3372 "copy Firmware crash dump\n");
3373 else
3374 dev_info(&instance->pdev->dev, "Firmware crash dump "
3375 "copied successfully\n");
3376 }
3377 return strlen(buf);
3378 }
3379
3380 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3381 fw_crash_state_show(struct device *cdev,
3382 struct device_attribute *attr, char *buf)
3383 {
3384 struct Scsi_Host *shost = class_to_shost(cdev);
3385 struct megasas_instance *instance =
3386 (struct megasas_instance *) shost->hostdata;
3387
3388 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3389 }
3390
3391 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3392 page_size_show(struct device *cdev,
3393 struct device_attribute *attr, char *buf)
3394 {
3395 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3396 }
3397
3398 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3399 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3400 char *buf)
3401 {
3402 struct Scsi_Host *shost = class_to_shost(cdev);
3403 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3404
3405 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3406 }
3407
3408 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3409 fw_cmds_outstanding_show(struct device *cdev,
3410 struct device_attribute *attr, char *buf)
3411 {
3412 struct Scsi_Host *shost = class_to_shost(cdev);
3413 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3414
3415 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3416 }
3417
3418 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3419 enable_sdev_max_qd_show(struct device *cdev,
3420 struct device_attribute *attr, char *buf)
3421 {
3422 struct Scsi_Host *shost = class_to_shost(cdev);
3423 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3424
3425 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3426 }
3427
3428 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3429 enable_sdev_max_qd_store(struct device *cdev,
3430 struct device_attribute *attr, const char *buf, size_t count)
3431 {
3432 struct Scsi_Host *shost = class_to_shost(cdev);
3433 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3434 u32 val = 0;
3435 bool is_target_prop;
3436 int ret_target_prop = DCMD_FAILED;
3437 struct scsi_device *sdev;
3438
3439 if (kstrtou32(buf, 0, &val) != 0) {
3440 pr_err("megasas: could not set enable_sdev_max_qd\n");
3441 return -EINVAL;
3442 }
3443
3444 mutex_lock(&instance->reset_mutex);
3445 if (val)
3446 instance->enable_sdev_max_qd = true;
3447 else
3448 instance->enable_sdev_max_qd = false;
3449
3450 shost_for_each_device(sdev, shost) {
3451 ret_target_prop = megasas_get_target_prop(instance, sdev);
3452 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3453 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3454 }
3455 mutex_unlock(&instance->reset_mutex);
3456
3457 return strlen(buf);
3458 }
3459
3460 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3461 dump_system_regs_show(struct device *cdev,
3462 struct device_attribute *attr, char *buf)
3463 {
3464 struct Scsi_Host *shost = class_to_shost(cdev);
3465 struct megasas_instance *instance =
3466 (struct megasas_instance *)shost->hostdata;
3467
3468 return megasas_dump_sys_regs(instance->reg_set, buf);
3469 }
3470
3471 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3472 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3473 char *buf)
3474 {
3475 struct Scsi_Host *shost = class_to_shost(cdev);
3476 struct megasas_instance *instance =
3477 (struct megasas_instance *)shost->hostdata;
3478
3479 return snprintf(buf, PAGE_SIZE, "%ld\n",
3480 (unsigned long)instance->map_id);
3481 }
3482
3483 static DEVICE_ATTR_RW(fw_crash_buffer);
3484 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3485 static DEVICE_ATTR_RW(fw_crash_state);
3486 static DEVICE_ATTR_RO(page_size);
3487 static DEVICE_ATTR_RO(ldio_outstanding);
3488 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3489 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3490 static DEVICE_ATTR_RO(dump_system_regs);
3491 static DEVICE_ATTR_RO(raid_map_id);
3492
3493 static struct attribute *megaraid_host_attrs[] = {
3494 &dev_attr_fw_crash_buffer_size.attr,
3495 &dev_attr_fw_crash_buffer.attr,
3496 &dev_attr_fw_crash_state.attr,
3497 &dev_attr_page_size.attr,
3498 &dev_attr_ldio_outstanding.attr,
3499 &dev_attr_fw_cmds_outstanding.attr,
3500 &dev_attr_enable_sdev_max_qd.attr,
3501 &dev_attr_dump_system_regs.attr,
3502 &dev_attr_raid_map_id.attr,
3503 NULL,
3504 };
3505
3506 ATTRIBUTE_GROUPS(megaraid_host);
3507
3508 /*
3509 * Scsi host template for megaraid_sas driver
3510 */
3511 static const struct scsi_host_template megasas_template = {
3512
3513 .module = THIS_MODULE,
3514 .name = "Avago SAS based MegaRAID driver",
3515 .proc_name = "megaraid_sas",
3516 .device_configure = megasas_device_configure,
3517 .slave_alloc = megasas_slave_alloc,
3518 .slave_destroy = megasas_slave_destroy,
3519 .queuecommand = megasas_queue_command,
3520 .eh_target_reset_handler = megasas_reset_target,
3521 .eh_abort_handler = megasas_task_abort,
3522 .eh_host_reset_handler = megasas_reset_bus_host,
3523 .eh_timed_out = megasas_reset_timer,
3524 .shost_groups = megaraid_host_groups,
3525 .bios_param = megasas_bios_param,
3526 .map_queues = megasas_map_queues,
3527 .mq_poll = megasas_blk_mq_poll,
3528 .change_queue_depth = scsi_change_queue_depth,
3529 .max_segment_size = 0xffffffff,
3530 .cmd_size = sizeof(struct megasas_cmd_priv),
3531 };
3532
3533 /**
3534 * megasas_complete_int_cmd - Completes an internal command
3535 * @instance: Adapter soft state
3536 * @cmd: Command to be completed
3537 *
3538 * The megasas_issue_blocked_cmd() function waits for a command to complete
3539 * after it issues a command. This function wakes up that waiting routine by
3540 * calling wake_up() on the wait queue.
3541 */
3542 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3543 megasas_complete_int_cmd(struct megasas_instance *instance,
3544 struct megasas_cmd *cmd)
3545 {
3546 if (cmd->cmd_status_drv == DCMD_INIT)
3547 cmd->cmd_status_drv =
3548 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3549 DCMD_SUCCESS : DCMD_FAILED;
3550
3551 wake_up(&instance->int_cmd_wait_q);
3552 }
3553
3554 /**
3555 * megasas_complete_abort - Completes aborting a command
3556 * @instance: Adapter soft state
3557 * @cmd: Cmd that was issued to abort another cmd
3558 *
3559 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3560 * after it issues an abort on a previously issued command. This function
3561 * wakes up all functions waiting on the same wait queue.
3562 */
3563 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3564 megasas_complete_abort(struct megasas_instance *instance,
3565 struct megasas_cmd *cmd)
3566 {
3567 if (cmd->sync_cmd) {
3568 cmd->sync_cmd = 0;
3569 cmd->cmd_status_drv = DCMD_SUCCESS;
3570 wake_up(&instance->abort_cmd_wait_q);
3571 }
3572 }
3573
3574 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3575 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3576 {
3577 uint i;
3578
3579 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3580 if (instance->ld_ids_prev[i] != 0xff &&
3581 instance->ld_ids_from_raidmap[i] == 0xff) {
3582 if (megasas_dbg_lvl & LD_PD_DEBUG)
3583 dev_info(&instance->pdev->dev,
3584 "LD target ID %d removed from RAID map\n", i);
3585 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3586 }
3587 }
3588 }
3589
3590 /**
3591 * megasas_complete_cmd - Completes a command
3592 * @instance: Adapter soft state
3593 * @cmd: Command to be completed
3594 * @alt_status: If non-zero, use this value as status to
3595 * SCSI mid-layer instead of the value returned
3596 * by the FW. This should be used if caller wants
3597 * an alternate status (as in the case of aborted
3598 * commands)
3599 */
3600 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3601 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3602 u8 alt_status)
3603 {
3604 int exception = 0;
3605 struct megasas_header *hdr = &cmd->frame->hdr;
3606 unsigned long flags;
3607 struct fusion_context *fusion = instance->ctrl_context;
3608 u32 opcode, status;
3609
3610 /* flag for the retry reset */
3611 cmd->retry_for_fw_reset = 0;
3612
3613 if (cmd->scmd)
3614 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3615
3616 switch (hdr->cmd) {
3617 case MFI_CMD_INVALID:
3618 /* Some older 1068 controller FW may keep a pended
3619 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3620 when booting the kdump kernel. Ignore this command to
3621 prevent a kernel panic on shutdown of the kdump kernel. */
3622 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3623 "completed\n");
3624 dev_warn(&instance->pdev->dev, "If you have a controller "
3625 "other than PERC5, please upgrade your firmware\n");
3626 break;
3627 case MFI_CMD_PD_SCSI_IO:
3628 case MFI_CMD_LD_SCSI_IO:
3629
3630 /*
3631 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3632 * issued either through an IO path or an IOCTL path. If it
3633 * was via IOCTL, we will send it to internal completion.
3634 */
3635 if (cmd->sync_cmd) {
3636 cmd->sync_cmd = 0;
3637 megasas_complete_int_cmd(instance, cmd);
3638 break;
3639 }
3640 fallthrough;
3641
3642 case MFI_CMD_LD_READ:
3643 case MFI_CMD_LD_WRITE:
3644
3645 if (alt_status) {
3646 cmd->scmd->result = alt_status << 16;
3647 exception = 1;
3648 }
3649
3650 if (exception) {
3651
3652 atomic_dec(&instance->fw_outstanding);
3653
3654 scsi_dma_unmap(cmd->scmd);
3655 scsi_done(cmd->scmd);
3656 megasas_return_cmd(instance, cmd);
3657
3658 break;
3659 }
3660
3661 switch (hdr->cmd_status) {
3662
3663 case MFI_STAT_OK:
3664 cmd->scmd->result = DID_OK << 16;
3665 break;
3666
3667 case MFI_STAT_SCSI_IO_FAILED:
3668 case MFI_STAT_LD_INIT_IN_PROGRESS:
3669 if (hdr->scsi_status == 0xf0)
3670 cmd->scmd->result = (DID_ERROR << 16) | SAM_STAT_CHECK_CONDITION;
3671 else
3672 cmd->scmd->result = (DID_ERROR << 16) | hdr->scsi_status;
3673 break;
3674
3675 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3676
3677 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3678
3679 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3680 memset(cmd->scmd->sense_buffer, 0,
3681 SCSI_SENSE_BUFFERSIZE);
3682 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3683 hdr->sense_len);
3684 }
3685
3686 break;
3687
3688 case MFI_STAT_LD_OFFLINE:
3689 case MFI_STAT_DEVICE_NOT_FOUND:
3690 cmd->scmd->result = DID_BAD_TARGET << 16;
3691 break;
3692
3693 default:
3694 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3695 hdr->cmd_status);
3696 cmd->scmd->result = DID_ERROR << 16;
3697 break;
3698 }
3699
3700 atomic_dec(&instance->fw_outstanding);
3701
3702 scsi_dma_unmap(cmd->scmd);
3703 scsi_done(cmd->scmd);
3704 megasas_return_cmd(instance, cmd);
3705
3706 break;
3707
3708 case MFI_CMD_SMP:
3709 case MFI_CMD_STP:
3710 case MFI_CMD_NVME:
3711 case MFI_CMD_TOOLBOX:
3712 megasas_complete_int_cmd(instance, cmd);
3713 break;
3714
3715 case MFI_CMD_DCMD:
3716 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3717 /* Check for LD map update */
3718 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3719 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3720 fusion->fast_path_io = 0;
3721 spin_lock_irqsave(instance->host->host_lock, flags);
3722 status = cmd->frame->hdr.cmd_status;
3723 instance->map_update_cmd = NULL;
3724 if (status != MFI_STAT_OK) {
3725 if (status != MFI_STAT_NOT_FOUND)
3726 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3727 cmd->frame->hdr.cmd_status);
3728 else {
3729 megasas_return_cmd(instance, cmd);
3730 spin_unlock_irqrestore(
3731 instance->host->host_lock,
3732 flags);
3733 break;
3734 }
3735 }
3736
3737 megasas_return_cmd(instance, cmd);
3738
3739 /*
3740 * Set fast path IO to ZERO.
3741 * Validate Map will set proper value.
3742 * Meanwhile all IOs will go as LD IO.
3743 */
3744 if (status == MFI_STAT_OK &&
3745 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3746 instance->map_id++;
3747 fusion->fast_path_io = 1;
3748 } else {
3749 fusion->fast_path_io = 0;
3750 }
3751
3752 if (instance->adapter_type >= INVADER_SERIES)
3753 megasas_set_ld_removed_by_fw(instance);
3754
3755 megasas_sync_map_info(instance);
3756 spin_unlock_irqrestore(instance->host->host_lock,
3757 flags);
3758
3759 break;
3760 }
3761 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3762 opcode == MR_DCMD_CTRL_EVENT_GET) {
3763 spin_lock_irqsave(&poll_aen_lock, flags);
3764 megasas_poll_wait_aen = 0;
3765 spin_unlock_irqrestore(&poll_aen_lock, flags);
3766 }
3767
3768 /* FW has an updated PD sequence */
3769 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3770 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3771
3772 spin_lock_irqsave(instance->host->host_lock, flags);
3773 status = cmd->frame->hdr.cmd_status;
3774 instance->jbod_seq_cmd = NULL;
3775 megasas_return_cmd(instance, cmd);
3776
3777 if (status == MFI_STAT_OK) {
3778 instance->pd_seq_map_id++;
3779 /* Re-register a pd sync seq num cmd */
3780 if (megasas_sync_pd_seq_num(instance, true))
3781 instance->use_seqnum_jbod_fp = false;
3782 } else
3783 instance->use_seqnum_jbod_fp = false;
3784
3785 spin_unlock_irqrestore(instance->host->host_lock, flags);
3786 break;
3787 }
3788
3789 /*
3790 * See if got an event notification
3791 */
3792 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3793 megasas_service_aen(instance, cmd);
3794 else
3795 megasas_complete_int_cmd(instance, cmd);
3796
3797 break;
3798
3799 case MFI_CMD_ABORT:
3800 /*
3801 * Cmd issued to abort another cmd returned
3802 */
3803 megasas_complete_abort(instance, cmd);
3804 break;
3805
3806 default:
3807 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3808 hdr->cmd);
3809 megasas_complete_int_cmd(instance, cmd);
3810 break;
3811 }
3812 }
3813
3814 /**
3815 * megasas_issue_pending_cmds_again - issue all pending cmds
3816 * in FW again because of the fw reset
3817 * @instance: Adapter soft state
3818 */
3819 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3820 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3821 {
3822 struct megasas_cmd *cmd;
3823 struct list_head clist_local;
3824 union megasas_evt_class_locale class_locale;
3825 unsigned long flags;
3826 u32 seq_num;
3827
3828 INIT_LIST_HEAD(&clist_local);
3829 spin_lock_irqsave(&instance->hba_lock, flags);
3830 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3831 spin_unlock_irqrestore(&instance->hba_lock, flags);
3832
3833 while (!list_empty(&clist_local)) {
3834 cmd = list_entry((&clist_local)->next,
3835 struct megasas_cmd, list);
3836 list_del_init(&cmd->list);
3837
3838 if (cmd->sync_cmd || cmd->scmd) {
3839 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3840 "detected to be pending while HBA reset\n",
3841 cmd, cmd->scmd, cmd->sync_cmd);
3842
3843 cmd->retry_for_fw_reset++;
3844
3845 if (cmd->retry_for_fw_reset == 3) {
3846 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3847 "was tried multiple times during reset."
3848 "Shutting down the HBA\n",
3849 cmd, cmd->scmd, cmd->sync_cmd);
3850 instance->instancet->disable_intr(instance);
3851 atomic_set(&instance->fw_reset_no_pci_access, 1);
3852 megaraid_sas_kill_hba(instance);
3853 return;
3854 }
3855 }
3856
3857 if (cmd->sync_cmd == 1) {
3858 if (cmd->scmd) {
3859 dev_notice(&instance->pdev->dev, "unexpected"
3860 "cmd attached to internal command!\n");
3861 }
3862 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3863 "on the internal reset queue,"
3864 "issue it again.\n", cmd);
3865 cmd->cmd_status_drv = DCMD_INIT;
3866 instance->instancet->fire_cmd(instance,
3867 cmd->frame_phys_addr,
3868 0, instance->reg_set);
3869 } else if (cmd->scmd) {
3870 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3871 "detected on the internal queue, issue again.\n",
3872 cmd, cmd->scmd->cmnd[0]);
3873
3874 atomic_inc(&instance->fw_outstanding);
3875 instance->instancet->fire_cmd(instance,
3876 cmd->frame_phys_addr,
3877 cmd->frame_count-1, instance->reg_set);
3878 } else {
3879 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3880 "internal reset defer list while re-issue!!\n",
3881 cmd);
3882 }
3883 }
3884
3885 if (instance->aen_cmd) {
3886 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3887 megasas_return_cmd(instance, instance->aen_cmd);
3888
3889 instance->aen_cmd = NULL;
3890 }
3891
3892 /*
3893 * Initiate AEN (Asynchronous Event Notification)
3894 */
3895 seq_num = instance->last_seq_num;
3896 class_locale.members.reserved = 0;
3897 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3898 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3899
3900 megasas_register_aen(instance, seq_num, class_locale.word);
3901 }
3902
3903 /*
3904 * Move the internal reset pending commands to a deferred queue.
3905 *
3906 * We move the commands pending at internal reset time to a
3907 * pending queue. This queue would be flushed after successful
3908 * completion of the internal reset sequence. if the internal reset
3909 * did not complete in time, the kernel reset handler would flush
3910 * these commands.
3911 */
3912 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3913 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3914 {
3915 struct megasas_cmd *cmd;
3916 int i;
3917 u16 max_cmd = instance->max_fw_cmds;
3918 u32 defer_index;
3919 unsigned long flags;
3920
3921 defer_index = 0;
3922 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3923 for (i = 0; i < max_cmd; i++) {
3924 cmd = instance->cmd_list[i];
3925 if (cmd->sync_cmd == 1 || cmd->scmd) {
3926 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3927 "on the defer queue as internal\n",
3928 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3929
3930 if (!list_empty(&cmd->list)) {
3931 dev_notice(&instance->pdev->dev, "ERROR while"
3932 " moving this cmd:%p, %d %p, it was"
3933 "discovered on some list?\n",
3934 cmd, cmd->sync_cmd, cmd->scmd);
3935
3936 list_del_init(&cmd->list);
3937 }
3938 defer_index++;
3939 list_add_tail(&cmd->list,
3940 &instance->internal_reset_pending_q);
3941 }
3942 }
3943 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3944 }
3945
3946
3947 static void
process_fw_state_change_wq(struct work_struct * work)3948 process_fw_state_change_wq(struct work_struct *work)
3949 {
3950 struct megasas_instance *instance =
3951 container_of(work, struct megasas_instance, work_init);
3952 u32 wait;
3953 unsigned long flags;
3954
3955 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3956 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3957 atomic_read(&instance->adprecovery));
3958 return ;
3959 }
3960
3961 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3962 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3963 "state, restarting it...\n");
3964
3965 instance->instancet->disable_intr(instance);
3966 atomic_set(&instance->fw_outstanding, 0);
3967
3968 atomic_set(&instance->fw_reset_no_pci_access, 1);
3969 instance->instancet->adp_reset(instance, instance->reg_set);
3970 atomic_set(&instance->fw_reset_no_pci_access, 0);
3971
3972 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3973 "initiating next stage...\n");
3974
3975 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3976 "state 2 starting...\n");
3977
3978 /* waiting for about 20 second before start the second init */
3979 for (wait = 0; wait < 30; wait++) {
3980 msleep(1000);
3981 }
3982
3983 if (megasas_transition_to_ready(instance, 1)) {
3984 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3985
3986 atomic_set(&instance->fw_reset_no_pci_access, 1);
3987 megaraid_sas_kill_hba(instance);
3988 return ;
3989 }
3990
3991 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3992 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3993 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3994 ) {
3995 *instance->consumer = *instance->producer;
3996 } else {
3997 *instance->consumer = 0;
3998 *instance->producer = 0;
3999 }
4000
4001 megasas_issue_init_mfi(instance);
4002
4003 spin_lock_irqsave(&instance->hba_lock, flags);
4004 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4005 spin_unlock_irqrestore(&instance->hba_lock, flags);
4006 instance->instancet->enable_intr(instance);
4007
4008 megasas_issue_pending_cmds_again(instance);
4009 instance->issuepend_done = 1;
4010 }
4011 }
4012
4013 /**
4014 * megasas_deplete_reply_queue - Processes all completed commands
4015 * @instance: Adapter soft state
4016 * @alt_status: Alternate status to be returned to
4017 * SCSI mid-layer instead of the status
4018 * returned by the FW
4019 * Note: this must be called with hba lock held
4020 */
4021 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4022 megasas_deplete_reply_queue(struct megasas_instance *instance,
4023 u8 alt_status)
4024 {
4025 u32 mfiStatus;
4026 u32 fw_state;
4027
4028 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4029 return IRQ_HANDLED;
4030
4031 mfiStatus = instance->instancet->clear_intr(instance);
4032 if (mfiStatus == 0) {
4033 /* Hardware may not set outbound_intr_status in MSI-X mode */
4034 if (!instance->msix_vectors)
4035 return IRQ_NONE;
4036 }
4037
4038 instance->mfiStatus = mfiStatus;
4039
4040 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4041 fw_state = instance->instancet->read_fw_status_reg(
4042 instance) & MFI_STATE_MASK;
4043
4044 if (fw_state != MFI_STATE_FAULT) {
4045 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4046 fw_state);
4047 }
4048
4049 if ((fw_state == MFI_STATE_FAULT) &&
4050 (instance->disableOnlineCtrlReset == 0)) {
4051 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4052
4053 if ((instance->pdev->device ==
4054 PCI_DEVICE_ID_LSI_SAS1064R) ||
4055 (instance->pdev->device ==
4056 PCI_DEVICE_ID_DELL_PERC5) ||
4057 (instance->pdev->device ==
4058 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4059
4060 *instance->consumer =
4061 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4062 }
4063
4064
4065 instance->instancet->disable_intr(instance);
4066 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4067 instance->issuepend_done = 0;
4068
4069 atomic_set(&instance->fw_outstanding, 0);
4070 megasas_internal_reset_defer_cmds(instance);
4071
4072 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4073 fw_state, atomic_read(&instance->adprecovery));
4074
4075 schedule_work(&instance->work_init);
4076 return IRQ_HANDLED;
4077
4078 } else {
4079 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4080 fw_state, instance->disableOnlineCtrlReset);
4081 }
4082 }
4083
4084 tasklet_schedule(&instance->isr_tasklet);
4085 return IRQ_HANDLED;
4086 }
4087
4088 /**
4089 * megasas_isr - isr entry point
4090 * @irq: IRQ number
4091 * @devp: IRQ context address
4092 */
megasas_isr(int irq,void * devp)4093 static irqreturn_t megasas_isr(int irq, void *devp)
4094 {
4095 struct megasas_irq_context *irq_context = devp;
4096 struct megasas_instance *instance = irq_context->instance;
4097 unsigned long flags;
4098 irqreturn_t rc;
4099
4100 if (atomic_read(&instance->fw_reset_no_pci_access))
4101 return IRQ_HANDLED;
4102
4103 spin_lock_irqsave(&instance->hba_lock, flags);
4104 rc = megasas_deplete_reply_queue(instance, DID_OK);
4105 spin_unlock_irqrestore(&instance->hba_lock, flags);
4106
4107 return rc;
4108 }
4109
4110 /**
4111 * megasas_transition_to_ready - Move the FW to READY state
4112 * @instance: Adapter soft state
4113 * @ocr: Adapter reset state
4114 *
4115 * During the initialization, FW passes can potentially be in any one of
4116 * several possible states. If the FW in operational, waiting-for-handshake
4117 * states, driver must take steps to bring it to ready state. Otherwise, it
4118 * has to wait for the ready state.
4119 */
4120 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4121 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4122 {
4123 int i;
4124 u8 max_wait;
4125 u32 fw_state;
4126 u32 abs_state, curr_abs_state;
4127
4128 abs_state = instance->instancet->read_fw_status_reg(instance);
4129 fw_state = abs_state & MFI_STATE_MASK;
4130
4131 if (fw_state != MFI_STATE_READY)
4132 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4133 " state\n");
4134
4135 while (fw_state != MFI_STATE_READY) {
4136
4137 switch (fw_state) {
4138
4139 case MFI_STATE_FAULT:
4140 dev_printk(KERN_ERR, &instance->pdev->dev,
4141 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4142 abs_state & MFI_STATE_FAULT_CODE,
4143 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4144 if (ocr) {
4145 max_wait = MEGASAS_RESET_WAIT_TIME;
4146 break;
4147 } else {
4148 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4149 megasas_dump_reg_set(instance->reg_set);
4150 return -ENODEV;
4151 }
4152
4153 case MFI_STATE_WAIT_HANDSHAKE:
4154 /*
4155 * Set the CLR bit in inbound doorbell
4156 */
4157 if ((instance->pdev->device ==
4158 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4159 (instance->pdev->device ==
4160 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4161 (instance->adapter_type != MFI_SERIES))
4162 writel(
4163 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4164 &instance->reg_set->doorbell);
4165 else
4166 writel(
4167 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4168 &instance->reg_set->inbound_doorbell);
4169
4170 max_wait = MEGASAS_RESET_WAIT_TIME;
4171 break;
4172
4173 case MFI_STATE_BOOT_MESSAGE_PENDING:
4174 if ((instance->pdev->device ==
4175 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4176 (instance->pdev->device ==
4177 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4178 (instance->adapter_type != MFI_SERIES))
4179 writel(MFI_INIT_HOTPLUG,
4180 &instance->reg_set->doorbell);
4181 else
4182 writel(MFI_INIT_HOTPLUG,
4183 &instance->reg_set->inbound_doorbell);
4184
4185 max_wait = MEGASAS_RESET_WAIT_TIME;
4186 break;
4187
4188 case MFI_STATE_OPERATIONAL:
4189 /*
4190 * Bring it to READY state; assuming max wait 10 secs
4191 */
4192 instance->instancet->disable_intr(instance);
4193 if ((instance->pdev->device ==
4194 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4195 (instance->pdev->device ==
4196 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4197 (instance->adapter_type != MFI_SERIES)) {
4198 writel(MFI_RESET_FLAGS,
4199 &instance->reg_set->doorbell);
4200
4201 if (instance->adapter_type != MFI_SERIES) {
4202 for (i = 0; i < (10 * 1000); i += 20) {
4203 if (megasas_readl(
4204 instance,
4205 &instance->
4206 reg_set->
4207 doorbell) & 1)
4208 msleep(20);
4209 else
4210 break;
4211 }
4212 }
4213 } else
4214 writel(MFI_RESET_FLAGS,
4215 &instance->reg_set->inbound_doorbell);
4216
4217 max_wait = MEGASAS_RESET_WAIT_TIME;
4218 break;
4219
4220 case MFI_STATE_UNDEFINED:
4221 /*
4222 * This state should not last for more than 2 seconds
4223 */
4224 max_wait = MEGASAS_RESET_WAIT_TIME;
4225 break;
4226
4227 case MFI_STATE_BB_INIT:
4228 max_wait = MEGASAS_RESET_WAIT_TIME;
4229 break;
4230
4231 case MFI_STATE_FW_INIT:
4232 max_wait = MEGASAS_RESET_WAIT_TIME;
4233 break;
4234
4235 case MFI_STATE_FW_INIT_2:
4236 max_wait = MEGASAS_RESET_WAIT_TIME;
4237 break;
4238
4239 case MFI_STATE_DEVICE_SCAN:
4240 max_wait = MEGASAS_RESET_WAIT_TIME;
4241 break;
4242
4243 case MFI_STATE_FLUSH_CACHE:
4244 max_wait = MEGASAS_RESET_WAIT_TIME;
4245 break;
4246
4247 default:
4248 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4249 fw_state);
4250 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4251 megasas_dump_reg_set(instance->reg_set);
4252 return -ENODEV;
4253 }
4254
4255 /*
4256 * The cur_state should not last for more than max_wait secs
4257 */
4258 for (i = 0; i < max_wait * 50; i++) {
4259 curr_abs_state = instance->instancet->
4260 read_fw_status_reg(instance);
4261
4262 if (abs_state == curr_abs_state) {
4263 msleep(20);
4264 } else
4265 break;
4266 }
4267
4268 /*
4269 * Return error if fw_state hasn't changed after max_wait
4270 */
4271 if (curr_abs_state == abs_state) {
4272 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4273 "in %d secs\n", fw_state, max_wait);
4274 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4275 megasas_dump_reg_set(instance->reg_set);
4276 return -ENODEV;
4277 }
4278
4279 abs_state = curr_abs_state;
4280 fw_state = curr_abs_state & MFI_STATE_MASK;
4281 }
4282 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4283
4284 return 0;
4285 }
4286
4287 /**
4288 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4289 * @instance: Adapter soft state
4290 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4291 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4292 {
4293 int i;
4294 u16 max_cmd = instance->max_mfi_cmds;
4295 struct megasas_cmd *cmd;
4296
4297 if (!instance->frame_dma_pool)
4298 return;
4299
4300 /*
4301 * Return all frames to pool
4302 */
4303 for (i = 0; i < max_cmd; i++) {
4304
4305 cmd = instance->cmd_list[i];
4306
4307 if (cmd->frame)
4308 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4309 cmd->frame_phys_addr);
4310
4311 if (cmd->sense)
4312 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4313 cmd->sense_phys_addr);
4314 }
4315
4316 /*
4317 * Now destroy the pool itself
4318 */
4319 dma_pool_destroy(instance->frame_dma_pool);
4320 dma_pool_destroy(instance->sense_dma_pool);
4321
4322 instance->frame_dma_pool = NULL;
4323 instance->sense_dma_pool = NULL;
4324 }
4325
4326 /**
4327 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4328 * @instance: Adapter soft state
4329 *
4330 * Each command packet has an embedded DMA memory buffer that is used for
4331 * filling MFI frame and the SG list that immediately follows the frame. This
4332 * function creates those DMA memory buffers for each command packet by using
4333 * PCI pool facility.
4334 */
megasas_create_frame_pool(struct megasas_instance * instance)4335 static int megasas_create_frame_pool(struct megasas_instance *instance)
4336 {
4337 int i;
4338 u16 max_cmd;
4339 u32 frame_count;
4340 struct megasas_cmd *cmd;
4341
4342 max_cmd = instance->max_mfi_cmds;
4343
4344 /*
4345 * For MFI controllers.
4346 * max_num_sge = 60
4347 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4348 * Total 960 byte (15 MFI frame of 64 byte)
4349 *
4350 * Fusion adapter require only 3 extra frame.
4351 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4352 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4353 * Total 192 byte (3 MFI frame of 64 byte)
4354 */
4355 frame_count = (instance->adapter_type == MFI_SERIES) ?
4356 (15 + 1) : (3 + 1);
4357 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4358 /*
4359 * Use DMA pool facility provided by PCI layer
4360 */
4361 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4362 &instance->pdev->dev,
4363 instance->mfi_frame_size, 256, 0);
4364
4365 if (!instance->frame_dma_pool) {
4366 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4367 return -ENOMEM;
4368 }
4369
4370 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4371 &instance->pdev->dev, 128,
4372 4, 0);
4373
4374 if (!instance->sense_dma_pool) {
4375 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4376
4377 dma_pool_destroy(instance->frame_dma_pool);
4378 instance->frame_dma_pool = NULL;
4379
4380 return -ENOMEM;
4381 }
4382
4383 /*
4384 * Allocate and attach a frame to each of the commands in cmd_list.
4385 * By making cmd->index as the context instead of the &cmd, we can
4386 * always use 32bit context regardless of the architecture
4387 */
4388 for (i = 0; i < max_cmd; i++) {
4389
4390 cmd = instance->cmd_list[i];
4391
4392 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4393 GFP_KERNEL, &cmd->frame_phys_addr);
4394
4395 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4396 GFP_KERNEL, &cmd->sense_phys_addr);
4397
4398 /*
4399 * megasas_teardown_frame_pool() takes care of freeing
4400 * whatever has been allocated
4401 */
4402 if (!cmd->frame || !cmd->sense) {
4403 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4404 megasas_teardown_frame_pool(instance);
4405 return -ENOMEM;
4406 }
4407
4408 cmd->frame->io.context = cpu_to_le32(cmd->index);
4409 cmd->frame->io.pad_0 = 0;
4410 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4411 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4412 }
4413
4414 return 0;
4415 }
4416
4417 /**
4418 * megasas_free_cmds - Free all the cmds in the free cmd pool
4419 * @instance: Adapter soft state
4420 */
megasas_free_cmds(struct megasas_instance * instance)4421 void megasas_free_cmds(struct megasas_instance *instance)
4422 {
4423 int i;
4424
4425 /* First free the MFI frame pool */
4426 megasas_teardown_frame_pool(instance);
4427
4428 /* Free all the commands in the cmd_list */
4429 for (i = 0; i < instance->max_mfi_cmds; i++)
4430
4431 kfree(instance->cmd_list[i]);
4432
4433 /* Free the cmd_list buffer itself */
4434 kfree(instance->cmd_list);
4435 instance->cmd_list = NULL;
4436
4437 INIT_LIST_HEAD(&instance->cmd_pool);
4438 }
4439
4440 /**
4441 * megasas_alloc_cmds - Allocates the command packets
4442 * @instance: Adapter soft state
4443 *
4444 * Each command that is issued to the FW, whether IO commands from the OS or
4445 * internal commands like IOCTLs, are wrapped in local data structure called
4446 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4447 * the FW.
4448 *
4449 * Each frame has a 32-bit field called context (tag). This context is used
4450 * to get back the megasas_cmd from the frame when a frame gets completed in
4451 * the ISR. Typically the address of the megasas_cmd itself would be used as
4452 * the context. But we wanted to keep the differences between 32 and 64 bit
4453 * systems to the mininum. We always use 32 bit integers for the context. In
4454 * this driver, the 32 bit values are the indices into an array cmd_list.
4455 * This array is used only to look up the megasas_cmd given the context. The
4456 * free commands themselves are maintained in a linked list called cmd_pool.
4457 */
megasas_alloc_cmds(struct megasas_instance * instance)4458 int megasas_alloc_cmds(struct megasas_instance *instance)
4459 {
4460 int i;
4461 int j;
4462 u16 max_cmd;
4463 struct megasas_cmd *cmd;
4464
4465 max_cmd = instance->max_mfi_cmds;
4466
4467 /*
4468 * instance->cmd_list is an array of struct megasas_cmd pointers.
4469 * Allocate the dynamic array first and then allocate individual
4470 * commands.
4471 */
4472 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4473
4474 if (!instance->cmd_list) {
4475 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4476 return -ENOMEM;
4477 }
4478
4479 for (i = 0; i < max_cmd; i++) {
4480 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4481 GFP_KERNEL);
4482
4483 if (!instance->cmd_list[i]) {
4484
4485 for (j = 0; j < i; j++)
4486 kfree(instance->cmd_list[j]);
4487
4488 kfree(instance->cmd_list);
4489 instance->cmd_list = NULL;
4490
4491 return -ENOMEM;
4492 }
4493 }
4494
4495 for (i = 0; i < max_cmd; i++) {
4496 cmd = instance->cmd_list[i];
4497 memset(cmd, 0, sizeof(struct megasas_cmd));
4498 cmd->index = i;
4499 cmd->scmd = NULL;
4500 cmd->instance = instance;
4501
4502 list_add_tail(&cmd->list, &instance->cmd_pool);
4503 }
4504
4505 /*
4506 * Create a frame pool and assign one frame to each cmd
4507 */
4508 if (megasas_create_frame_pool(instance)) {
4509 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4510 megasas_free_cmds(instance);
4511 return -ENOMEM;
4512 }
4513
4514 return 0;
4515 }
4516
4517 /*
4518 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4519 * @instance: Adapter soft state
4520 *
4521 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4522 * or FW is not under OCR.
4523 */
4524 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4525 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4526
4527 if (instance->adapter_type == MFI_SERIES)
4528 return KILL_ADAPTER;
4529 else if (instance->unload ||
4530 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4531 &instance->reset_flags))
4532 return IGNORE_TIMEOUT;
4533 else
4534 return INITIATE_OCR;
4535 }
4536
4537 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4538 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4539 {
4540 int ret;
4541 struct megasas_cmd *cmd;
4542 struct megasas_dcmd_frame *dcmd;
4543
4544 struct MR_PRIV_DEVICE *mr_device_priv_data;
4545 u16 device_id = 0;
4546
4547 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4548 cmd = megasas_get_cmd(instance);
4549
4550 if (!cmd) {
4551 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4552 return;
4553 }
4554
4555 dcmd = &cmd->frame->dcmd;
4556
4557 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4558 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4559
4560 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4561 dcmd->cmd = MFI_CMD_DCMD;
4562 dcmd->cmd_status = 0xFF;
4563 dcmd->sge_count = 1;
4564 dcmd->flags = MFI_FRAME_DIR_READ;
4565 dcmd->timeout = 0;
4566 dcmd->pad_0 = 0;
4567 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4568 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4569
4570 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4571 sizeof(struct MR_PD_INFO));
4572
4573 if ((instance->adapter_type != MFI_SERIES) &&
4574 !instance->mask_interrupts)
4575 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4576 else
4577 ret = megasas_issue_polled(instance, cmd);
4578
4579 switch (ret) {
4580 case DCMD_SUCCESS:
4581 mr_device_priv_data = sdev->hostdata;
4582 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4583 mr_device_priv_data->interface_type =
4584 instance->pd_info->state.ddf.pdType.intf;
4585 break;
4586
4587 case DCMD_TIMEOUT:
4588
4589 switch (dcmd_timeout_ocr_possible(instance)) {
4590 case INITIATE_OCR:
4591 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4592 mutex_unlock(&instance->reset_mutex);
4593 megasas_reset_fusion(instance->host,
4594 MFI_IO_TIMEOUT_OCR);
4595 mutex_lock(&instance->reset_mutex);
4596 break;
4597 case KILL_ADAPTER:
4598 megaraid_sas_kill_hba(instance);
4599 break;
4600 case IGNORE_TIMEOUT:
4601 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4602 __func__, __LINE__);
4603 break;
4604 }
4605
4606 break;
4607 }
4608
4609 if (ret != DCMD_TIMEOUT)
4610 megasas_return_cmd(instance, cmd);
4611
4612 return;
4613 }
4614 /*
4615 * megasas_get_pd_list_info - Returns FW's pd_list structure
4616 * @instance: Adapter soft state
4617 * @pd_list: pd_list structure
4618 *
4619 * Issues an internal command (DCMD) to get the FW's controller PD
4620 * list structure. This information is mainly used to find out SYSTEM
4621 * supported by the FW.
4622 */
4623 static int
megasas_get_pd_list(struct megasas_instance * instance)4624 megasas_get_pd_list(struct megasas_instance *instance)
4625 {
4626 int ret = 0, pd_index = 0;
4627 struct megasas_cmd *cmd;
4628 struct megasas_dcmd_frame *dcmd;
4629 struct MR_PD_LIST *ci;
4630 struct MR_PD_ADDRESS *pd_addr;
4631
4632 if (instance->pd_list_not_supported) {
4633 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4634 "not supported by firmware\n");
4635 return ret;
4636 }
4637
4638 ci = instance->pd_list_buf;
4639
4640 cmd = megasas_get_cmd(instance);
4641
4642 if (!cmd) {
4643 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4644 return -ENOMEM;
4645 }
4646
4647 dcmd = &cmd->frame->dcmd;
4648
4649 memset(ci, 0, sizeof(*ci));
4650 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4651
4652 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4653 dcmd->mbox.b[1] = 0;
4654 dcmd->cmd = MFI_CMD_DCMD;
4655 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4656 dcmd->sge_count = 1;
4657 dcmd->flags = MFI_FRAME_DIR_READ;
4658 dcmd->timeout = 0;
4659 dcmd->pad_0 = 0;
4660 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4661 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4662
4663 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4664 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4665
4666 if ((instance->adapter_type != MFI_SERIES) &&
4667 !instance->mask_interrupts)
4668 ret = megasas_issue_blocked_cmd(instance, cmd,
4669 MFI_IO_TIMEOUT_SECS);
4670 else
4671 ret = megasas_issue_polled(instance, cmd);
4672
4673 switch (ret) {
4674 case DCMD_FAILED:
4675 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4676 "failed/not supported by firmware\n");
4677
4678 if (instance->adapter_type != MFI_SERIES)
4679 megaraid_sas_kill_hba(instance);
4680 else
4681 instance->pd_list_not_supported = 1;
4682 break;
4683 case DCMD_TIMEOUT:
4684
4685 switch (dcmd_timeout_ocr_possible(instance)) {
4686 case INITIATE_OCR:
4687 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4688 /*
4689 * DCMD failed from AEN path.
4690 * AEN path already hold reset_mutex to avoid PCI access
4691 * while OCR is in progress.
4692 */
4693 mutex_unlock(&instance->reset_mutex);
4694 megasas_reset_fusion(instance->host,
4695 MFI_IO_TIMEOUT_OCR);
4696 mutex_lock(&instance->reset_mutex);
4697 break;
4698 case KILL_ADAPTER:
4699 megaraid_sas_kill_hba(instance);
4700 break;
4701 case IGNORE_TIMEOUT:
4702 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4703 __func__, __LINE__);
4704 break;
4705 }
4706
4707 break;
4708
4709 case DCMD_SUCCESS:
4710 pd_addr = ci->addr;
4711 if (megasas_dbg_lvl & LD_PD_DEBUG)
4712 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4713 __func__, le32_to_cpu(ci->count));
4714
4715 if ((le32_to_cpu(ci->count) >
4716 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4717 break;
4718
4719 memset(instance->local_pd_list, 0,
4720 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4721
4722 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4723 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4724 le16_to_cpu(pd_addr->deviceId);
4725 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4726 pd_addr->scsiDevType;
4727 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4728 MR_PD_STATE_SYSTEM;
4729 if (megasas_dbg_lvl & LD_PD_DEBUG)
4730 dev_info(&instance->pdev->dev,
4731 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4732 pd_index, le16_to_cpu(pd_addr->deviceId),
4733 pd_addr->scsiDevType);
4734 pd_addr++;
4735 }
4736
4737 memcpy(instance->pd_list, instance->local_pd_list,
4738 sizeof(instance->pd_list));
4739 break;
4740
4741 }
4742
4743 if (ret != DCMD_TIMEOUT)
4744 megasas_return_cmd(instance, cmd);
4745
4746 return ret;
4747 }
4748
4749 /*
4750 * megasas_get_ld_list_info - Returns FW's ld_list structure
4751 * @instance: Adapter soft state
4752 * @ld_list: ld_list structure
4753 *
4754 * Issues an internal command (DCMD) to get the FW's controller PD
4755 * list structure. This information is mainly used to find out SYSTEM
4756 * supported by the FW.
4757 */
4758 static int
megasas_get_ld_list(struct megasas_instance * instance)4759 megasas_get_ld_list(struct megasas_instance *instance)
4760 {
4761 int ret = 0, ld_index = 0, ids = 0;
4762 struct megasas_cmd *cmd;
4763 struct megasas_dcmd_frame *dcmd;
4764 struct MR_LD_LIST *ci;
4765 dma_addr_t ci_h = 0;
4766 u32 ld_count;
4767
4768 ci = instance->ld_list_buf;
4769 ci_h = instance->ld_list_buf_h;
4770
4771 cmd = megasas_get_cmd(instance);
4772
4773 if (!cmd) {
4774 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4775 return -ENOMEM;
4776 }
4777
4778 dcmd = &cmd->frame->dcmd;
4779
4780 memset(ci, 0, sizeof(*ci));
4781 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4782
4783 if (instance->supportmax256vd)
4784 dcmd->mbox.b[0] = 1;
4785 dcmd->cmd = MFI_CMD_DCMD;
4786 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4787 dcmd->sge_count = 1;
4788 dcmd->flags = MFI_FRAME_DIR_READ;
4789 dcmd->timeout = 0;
4790 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4791 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4792 dcmd->pad_0 = 0;
4793
4794 megasas_set_dma_settings(instance, dcmd, ci_h,
4795 sizeof(struct MR_LD_LIST));
4796
4797 if ((instance->adapter_type != MFI_SERIES) &&
4798 !instance->mask_interrupts)
4799 ret = megasas_issue_blocked_cmd(instance, cmd,
4800 MFI_IO_TIMEOUT_SECS);
4801 else
4802 ret = megasas_issue_polled(instance, cmd);
4803
4804 ld_count = le32_to_cpu(ci->ldCount);
4805
4806 switch (ret) {
4807 case DCMD_FAILED:
4808 megaraid_sas_kill_hba(instance);
4809 break;
4810 case DCMD_TIMEOUT:
4811
4812 switch (dcmd_timeout_ocr_possible(instance)) {
4813 case INITIATE_OCR:
4814 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4815 /*
4816 * DCMD failed from AEN path.
4817 * AEN path already hold reset_mutex to avoid PCI access
4818 * while OCR is in progress.
4819 */
4820 mutex_unlock(&instance->reset_mutex);
4821 megasas_reset_fusion(instance->host,
4822 MFI_IO_TIMEOUT_OCR);
4823 mutex_lock(&instance->reset_mutex);
4824 break;
4825 case KILL_ADAPTER:
4826 megaraid_sas_kill_hba(instance);
4827 break;
4828 case IGNORE_TIMEOUT:
4829 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4830 __func__, __LINE__);
4831 break;
4832 }
4833
4834 break;
4835
4836 case DCMD_SUCCESS:
4837 if (megasas_dbg_lvl & LD_PD_DEBUG)
4838 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4839 __func__, ld_count);
4840
4841 if (ld_count > instance->fw_supported_vd_count)
4842 break;
4843
4844 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4845
4846 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4847 if (ci->ldList[ld_index].state != 0) {
4848 ids = ci->ldList[ld_index].ref.targetId;
4849 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4850 if (megasas_dbg_lvl & LD_PD_DEBUG)
4851 dev_info(&instance->pdev->dev,
4852 "LD%d: targetID: 0x%03x\n",
4853 ld_index, ids);
4854 }
4855 }
4856
4857 break;
4858 }
4859
4860 if (ret != DCMD_TIMEOUT)
4861 megasas_return_cmd(instance, cmd);
4862
4863 return ret;
4864 }
4865
4866 /**
4867 * megasas_ld_list_query - Returns FW's ld_list structure
4868 * @instance: Adapter soft state
4869 * @query_type: ld_list structure type
4870 *
4871 * Issues an internal command (DCMD) to get the FW's controller PD
4872 * list structure. This information is mainly used to find out SYSTEM
4873 * supported by the FW.
4874 */
4875 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4876 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4877 {
4878 int ret = 0, ld_index = 0, ids = 0;
4879 struct megasas_cmd *cmd;
4880 struct megasas_dcmd_frame *dcmd;
4881 struct MR_LD_TARGETID_LIST *ci;
4882 dma_addr_t ci_h = 0;
4883 u32 tgtid_count;
4884
4885 ci = instance->ld_targetid_list_buf;
4886 ci_h = instance->ld_targetid_list_buf_h;
4887
4888 cmd = megasas_get_cmd(instance);
4889
4890 if (!cmd) {
4891 dev_warn(&instance->pdev->dev,
4892 "megasas_ld_list_query: Failed to get cmd\n");
4893 return -ENOMEM;
4894 }
4895
4896 dcmd = &cmd->frame->dcmd;
4897
4898 memset(ci, 0, sizeof(*ci));
4899 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4900
4901 dcmd->mbox.b[0] = query_type;
4902 if (instance->supportmax256vd)
4903 dcmd->mbox.b[2] = 1;
4904
4905 dcmd->cmd = MFI_CMD_DCMD;
4906 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4907 dcmd->sge_count = 1;
4908 dcmd->flags = MFI_FRAME_DIR_READ;
4909 dcmd->timeout = 0;
4910 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4911 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4912 dcmd->pad_0 = 0;
4913
4914 megasas_set_dma_settings(instance, dcmd, ci_h,
4915 sizeof(struct MR_LD_TARGETID_LIST));
4916
4917 if ((instance->adapter_type != MFI_SERIES) &&
4918 !instance->mask_interrupts)
4919 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4920 else
4921 ret = megasas_issue_polled(instance, cmd);
4922
4923 switch (ret) {
4924 case DCMD_FAILED:
4925 dev_info(&instance->pdev->dev,
4926 "DCMD not supported by firmware - %s %d\n",
4927 __func__, __LINE__);
4928 ret = megasas_get_ld_list(instance);
4929 break;
4930 case DCMD_TIMEOUT:
4931 switch (dcmd_timeout_ocr_possible(instance)) {
4932 case INITIATE_OCR:
4933 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4934 /*
4935 * DCMD failed from AEN path.
4936 * AEN path already hold reset_mutex to avoid PCI access
4937 * while OCR is in progress.
4938 */
4939 mutex_unlock(&instance->reset_mutex);
4940 megasas_reset_fusion(instance->host,
4941 MFI_IO_TIMEOUT_OCR);
4942 mutex_lock(&instance->reset_mutex);
4943 break;
4944 case KILL_ADAPTER:
4945 megaraid_sas_kill_hba(instance);
4946 break;
4947 case IGNORE_TIMEOUT:
4948 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4949 __func__, __LINE__);
4950 break;
4951 }
4952
4953 break;
4954 case DCMD_SUCCESS:
4955 tgtid_count = le32_to_cpu(ci->count);
4956
4957 if (megasas_dbg_lvl & LD_PD_DEBUG)
4958 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4959 __func__, tgtid_count);
4960
4961 if ((tgtid_count > (instance->fw_supported_vd_count)))
4962 break;
4963
4964 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4965 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4966 ids = ci->targetId[ld_index];
4967 instance->ld_ids[ids] = ci->targetId[ld_index];
4968 if (megasas_dbg_lvl & LD_PD_DEBUG)
4969 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4970 ld_index, ci->targetId[ld_index]);
4971 }
4972
4973 break;
4974 }
4975
4976 if (ret != DCMD_TIMEOUT)
4977 megasas_return_cmd(instance, cmd);
4978
4979 return ret;
4980 }
4981
4982 /**
4983 * megasas_host_device_list_query
4984 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4985 * dcmd.mbox - reserved
4986 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4987 * Desc: This DCMD will return the combined device list
4988 * Status: MFI_STAT_OK - List returned successfully
4989 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4990 * disabled
4991 * @instance: Adapter soft state
4992 * @is_probe: Driver probe check
4993 * Return: 0 if DCMD succeeded
4994 * non-zero if failed
4995 */
4996 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4997 megasas_host_device_list_query(struct megasas_instance *instance,
4998 bool is_probe)
4999 {
5000 int ret, i, target_id;
5001 struct megasas_cmd *cmd;
5002 struct megasas_dcmd_frame *dcmd;
5003 struct MR_HOST_DEVICE_LIST *ci;
5004 u32 count;
5005 dma_addr_t ci_h;
5006
5007 ci = instance->host_device_list_buf;
5008 ci_h = instance->host_device_list_buf_h;
5009
5010 cmd = megasas_get_cmd(instance);
5011
5012 if (!cmd) {
5013 dev_warn(&instance->pdev->dev,
5014 "%s: failed to get cmd\n",
5015 __func__);
5016 return -ENOMEM;
5017 }
5018
5019 dcmd = &cmd->frame->dcmd;
5020
5021 memset(ci, 0, sizeof(*ci));
5022 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5023
5024 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5025 dcmd->cmd = MFI_CMD_DCMD;
5026 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5027 dcmd->sge_count = 1;
5028 dcmd->flags = MFI_FRAME_DIR_READ;
5029 dcmd->timeout = 0;
5030 dcmd->pad_0 = 0;
5031 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5032 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5033
5034 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5035
5036 if (!instance->mask_interrupts) {
5037 ret = megasas_issue_blocked_cmd(instance, cmd,
5038 MFI_IO_TIMEOUT_SECS);
5039 } else {
5040 ret = megasas_issue_polled(instance, cmd);
5041 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5042 }
5043
5044 switch (ret) {
5045 case DCMD_SUCCESS:
5046 /* Fill the internal pd_list and ld_ids array based on
5047 * targetIds returned by FW
5048 */
5049 count = le32_to_cpu(ci->count);
5050
5051 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5052 break;
5053
5054 if (megasas_dbg_lvl & LD_PD_DEBUG)
5055 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5056 __func__, count);
5057
5058 memset(instance->local_pd_list, 0,
5059 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5060 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5061 for (i = 0; i < count; i++) {
5062 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5063 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5064 instance->local_pd_list[target_id].tid = target_id;
5065 instance->local_pd_list[target_id].driveType =
5066 ci->host_device_list[i].scsi_type;
5067 instance->local_pd_list[target_id].driveState =
5068 MR_PD_STATE_SYSTEM;
5069 if (megasas_dbg_lvl & LD_PD_DEBUG)
5070 dev_info(&instance->pdev->dev,
5071 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5072 i, target_id, ci->host_device_list[i].scsi_type);
5073 } else {
5074 instance->ld_ids[target_id] = target_id;
5075 if (megasas_dbg_lvl & LD_PD_DEBUG)
5076 dev_info(&instance->pdev->dev,
5077 "Device %d: LD targetID: 0x%03x\n",
5078 i, target_id);
5079 }
5080 }
5081
5082 memcpy(instance->pd_list, instance->local_pd_list,
5083 sizeof(instance->pd_list));
5084 break;
5085
5086 case DCMD_TIMEOUT:
5087 switch (dcmd_timeout_ocr_possible(instance)) {
5088 case INITIATE_OCR:
5089 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5090 mutex_unlock(&instance->reset_mutex);
5091 megasas_reset_fusion(instance->host,
5092 MFI_IO_TIMEOUT_OCR);
5093 mutex_lock(&instance->reset_mutex);
5094 break;
5095 case KILL_ADAPTER:
5096 megaraid_sas_kill_hba(instance);
5097 break;
5098 case IGNORE_TIMEOUT:
5099 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5100 __func__, __LINE__);
5101 break;
5102 }
5103 break;
5104 case DCMD_FAILED:
5105 dev_err(&instance->pdev->dev,
5106 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5107 __func__);
5108 break;
5109 }
5110
5111 if (ret != DCMD_TIMEOUT)
5112 megasas_return_cmd(instance, cmd);
5113
5114 return ret;
5115 }
5116
5117 /*
5118 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5119 * instance : Controller's instance
5120 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5121 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5122 {
5123 struct fusion_context *fusion;
5124 u32 ventura_map_sz = 0;
5125
5126 fusion = instance->ctrl_context;
5127 /* For MFI based controllers return dummy success */
5128 if (!fusion)
5129 return;
5130
5131 instance->supportmax256vd =
5132 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5133 /* Below is additional check to address future FW enhancement */
5134 if (instance->ctrl_info_buf->max_lds > 64)
5135 instance->supportmax256vd = 1;
5136
5137 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5138 * MEGASAS_MAX_DEV_PER_CHANNEL;
5139 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5140 * MEGASAS_MAX_DEV_PER_CHANNEL;
5141 if (instance->supportmax256vd) {
5142 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5143 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5144 } else {
5145 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5146 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5147 }
5148
5149 dev_info(&instance->pdev->dev,
5150 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5151 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5152 instance->ctrl_info_buf->max_lds);
5153
5154 if (instance->max_raid_mapsize) {
5155 ventura_map_sz = instance->max_raid_mapsize *
5156 MR_MIN_MAP_SIZE; /* 64k */
5157 fusion->current_map_sz = ventura_map_sz;
5158 fusion->max_map_sz = ventura_map_sz;
5159 } else {
5160 fusion->old_map_sz =
5161 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5162 instance->fw_supported_vd_count);
5163 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5164
5165 fusion->max_map_sz =
5166 max(fusion->old_map_sz, fusion->new_map_sz);
5167
5168 if (instance->supportmax256vd)
5169 fusion->current_map_sz = fusion->new_map_sz;
5170 else
5171 fusion->current_map_sz = fusion->old_map_sz;
5172 }
5173 /* irrespective of FW raid maps, driver raid map is constant */
5174 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5175 }
5176
5177 /*
5178 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5179 * dcmd.hdr.length - number of bytes to read
5180 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5181 * Desc: Fill in snapdump properties
5182 * Status: MFI_STAT_OK- Command successful
5183 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5184 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5185 {
5186 int ret = 0;
5187 struct megasas_cmd *cmd;
5188 struct megasas_dcmd_frame *dcmd;
5189 struct MR_SNAPDUMP_PROPERTIES *ci;
5190 dma_addr_t ci_h = 0;
5191
5192 ci = instance->snapdump_prop;
5193 ci_h = instance->snapdump_prop_h;
5194
5195 if (!ci)
5196 return;
5197
5198 cmd = megasas_get_cmd(instance);
5199
5200 if (!cmd) {
5201 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5202 return;
5203 }
5204
5205 dcmd = &cmd->frame->dcmd;
5206
5207 memset(ci, 0, sizeof(*ci));
5208 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5209
5210 dcmd->cmd = MFI_CMD_DCMD;
5211 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5212 dcmd->sge_count = 1;
5213 dcmd->flags = MFI_FRAME_DIR_READ;
5214 dcmd->timeout = 0;
5215 dcmd->pad_0 = 0;
5216 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5217 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5218
5219 megasas_set_dma_settings(instance, dcmd, ci_h,
5220 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5221
5222 if (!instance->mask_interrupts) {
5223 ret = megasas_issue_blocked_cmd(instance, cmd,
5224 MFI_IO_TIMEOUT_SECS);
5225 } else {
5226 ret = megasas_issue_polled(instance, cmd);
5227 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5228 }
5229
5230 switch (ret) {
5231 case DCMD_SUCCESS:
5232 instance->snapdump_wait_time =
5233 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5234 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5235 break;
5236
5237 case DCMD_TIMEOUT:
5238 switch (dcmd_timeout_ocr_possible(instance)) {
5239 case INITIATE_OCR:
5240 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5241 mutex_unlock(&instance->reset_mutex);
5242 megasas_reset_fusion(instance->host,
5243 MFI_IO_TIMEOUT_OCR);
5244 mutex_lock(&instance->reset_mutex);
5245 break;
5246 case KILL_ADAPTER:
5247 megaraid_sas_kill_hba(instance);
5248 break;
5249 case IGNORE_TIMEOUT:
5250 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5251 __func__, __LINE__);
5252 break;
5253 }
5254 }
5255
5256 if (ret != DCMD_TIMEOUT)
5257 megasas_return_cmd(instance, cmd);
5258 }
5259
5260 /**
5261 * megasas_get_ctrl_info - Returns FW's controller structure
5262 * @instance: Adapter soft state
5263 *
5264 * Issues an internal command (DCMD) to get the FW's controller structure.
5265 * This information is mainly used to find out the maximum IO transfer per
5266 * command supported by the FW.
5267 */
5268 int
megasas_get_ctrl_info(struct megasas_instance * instance)5269 megasas_get_ctrl_info(struct megasas_instance *instance)
5270 {
5271 int ret = 0;
5272 struct megasas_cmd *cmd;
5273 struct megasas_dcmd_frame *dcmd;
5274 struct megasas_ctrl_info *ci;
5275 dma_addr_t ci_h = 0;
5276
5277 ci = instance->ctrl_info_buf;
5278 ci_h = instance->ctrl_info_buf_h;
5279
5280 cmd = megasas_get_cmd(instance);
5281
5282 if (!cmd) {
5283 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5284 return -ENOMEM;
5285 }
5286
5287 dcmd = &cmd->frame->dcmd;
5288
5289 memset(ci, 0, sizeof(*ci));
5290 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5291
5292 dcmd->cmd = MFI_CMD_DCMD;
5293 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5294 dcmd->sge_count = 1;
5295 dcmd->flags = MFI_FRAME_DIR_READ;
5296 dcmd->timeout = 0;
5297 dcmd->pad_0 = 0;
5298 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5299 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5300 dcmd->mbox.b[0] = 1;
5301
5302 megasas_set_dma_settings(instance, dcmd, ci_h,
5303 sizeof(struct megasas_ctrl_info));
5304
5305 if ((instance->adapter_type != MFI_SERIES) &&
5306 !instance->mask_interrupts) {
5307 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5308 } else {
5309 ret = megasas_issue_polled(instance, cmd);
5310 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5311 }
5312
5313 switch (ret) {
5314 case DCMD_SUCCESS:
5315 /* Save required controller information in
5316 * CPU endianness format.
5317 */
5318 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5319 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5320 le32_to_cpus((u32 *)&ci->adapterOperations2);
5321 le32_to_cpus((u32 *)&ci->adapterOperations3);
5322 le16_to_cpus((u16 *)&ci->adapter_operations4);
5323 le32_to_cpus((u32 *)&ci->adapter_operations5);
5324
5325 /* Update the latest Ext VD info.
5326 * From Init path, store current firmware details.
5327 * From OCR path, detect any firmware properties changes.
5328 * in case of Firmware upgrade without system reboot.
5329 */
5330 megasas_update_ext_vd_details(instance);
5331 instance->support_seqnum_jbod_fp =
5332 ci->adapterOperations3.useSeqNumJbodFP;
5333 instance->support_morethan256jbod =
5334 ci->adapter_operations4.support_pd_map_target_id;
5335 instance->support_nvme_passthru =
5336 ci->adapter_operations4.support_nvme_passthru;
5337 instance->support_pci_lane_margining =
5338 ci->adapter_operations5.support_pci_lane_margining;
5339 instance->task_abort_tmo = ci->TaskAbortTO;
5340 instance->max_reset_tmo = ci->MaxResetTO;
5341
5342 /*Check whether controller is iMR or MR */
5343 instance->is_imr = (ci->memory_size ? 0 : 1);
5344
5345 instance->snapdump_wait_time =
5346 (ci->properties.on_off_properties2.enable_snap_dump ?
5347 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5348
5349 instance->enable_fw_dev_list =
5350 ci->properties.on_off_properties2.enable_fw_dev_list;
5351
5352 dev_info(&instance->pdev->dev,
5353 "controller type\t: %s(%dMB)\n",
5354 instance->is_imr ? "iMR" : "MR",
5355 le16_to_cpu(ci->memory_size));
5356
5357 instance->disableOnlineCtrlReset =
5358 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5359 instance->secure_jbod_support =
5360 ci->adapterOperations3.supportSecurityonJBOD;
5361 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5362 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5363 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5364 instance->secure_jbod_support ? "Yes" : "No");
5365 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5366 instance->support_nvme_passthru ? "Yes" : "No");
5367 dev_info(&instance->pdev->dev,
5368 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5369 instance->task_abort_tmo, instance->max_reset_tmo);
5370 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5371 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5372 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5373 instance->support_pci_lane_margining ? "Yes" : "No");
5374
5375 break;
5376
5377 case DCMD_TIMEOUT:
5378 switch (dcmd_timeout_ocr_possible(instance)) {
5379 case INITIATE_OCR:
5380 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5381 mutex_unlock(&instance->reset_mutex);
5382 megasas_reset_fusion(instance->host,
5383 MFI_IO_TIMEOUT_OCR);
5384 mutex_lock(&instance->reset_mutex);
5385 break;
5386 case KILL_ADAPTER:
5387 megaraid_sas_kill_hba(instance);
5388 break;
5389 case IGNORE_TIMEOUT:
5390 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5391 __func__, __LINE__);
5392 break;
5393 }
5394 break;
5395 case DCMD_FAILED:
5396 megaraid_sas_kill_hba(instance);
5397 break;
5398
5399 }
5400
5401 if (ret != DCMD_TIMEOUT)
5402 megasas_return_cmd(instance, cmd);
5403
5404 return ret;
5405 }
5406
5407 /*
5408 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5409 * to firmware
5410 *
5411 * @instance: Adapter soft state
5412 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5413 MR_CRASH_BUF_TURN_OFF = 0
5414 MR_CRASH_BUF_TURN_ON = 1
5415 * @return 0 on success non-zero on failure.
5416 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5417 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5418 * that driver supports crash dump feature. This DCMD will be sent only if
5419 * crash dump feature is supported by the FW.
5420 *
5421 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5422 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5423 u8 crash_buf_state)
5424 {
5425 int ret = 0;
5426 struct megasas_cmd *cmd;
5427 struct megasas_dcmd_frame *dcmd;
5428
5429 cmd = megasas_get_cmd(instance);
5430
5431 if (!cmd) {
5432 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5433 return -ENOMEM;
5434 }
5435
5436
5437 dcmd = &cmd->frame->dcmd;
5438
5439 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5440 dcmd->mbox.b[0] = crash_buf_state;
5441 dcmd->cmd = MFI_CMD_DCMD;
5442 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5443 dcmd->sge_count = 1;
5444 dcmd->flags = MFI_FRAME_DIR_NONE;
5445 dcmd->timeout = 0;
5446 dcmd->pad_0 = 0;
5447 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5448 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5449
5450 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5451 CRASH_DMA_BUF_SIZE);
5452
5453 if ((instance->adapter_type != MFI_SERIES) &&
5454 !instance->mask_interrupts)
5455 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5456 else
5457 ret = megasas_issue_polled(instance, cmd);
5458
5459 if (ret == DCMD_TIMEOUT) {
5460 switch (dcmd_timeout_ocr_possible(instance)) {
5461 case INITIATE_OCR:
5462 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5463 megasas_reset_fusion(instance->host,
5464 MFI_IO_TIMEOUT_OCR);
5465 break;
5466 case KILL_ADAPTER:
5467 megaraid_sas_kill_hba(instance);
5468 break;
5469 case IGNORE_TIMEOUT:
5470 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5471 __func__, __LINE__);
5472 break;
5473 }
5474 } else
5475 megasas_return_cmd(instance, cmd);
5476
5477 return ret;
5478 }
5479
5480 /**
5481 * megasas_issue_init_mfi - Initializes the FW
5482 * @instance: Adapter soft state
5483 *
5484 * Issues the INIT MFI cmd
5485 */
5486 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5487 megasas_issue_init_mfi(struct megasas_instance *instance)
5488 {
5489 __le32 context;
5490 struct megasas_cmd *cmd;
5491 struct megasas_init_frame *init_frame;
5492 struct megasas_init_queue_info *initq_info;
5493 dma_addr_t init_frame_h;
5494 dma_addr_t initq_info_h;
5495
5496 /*
5497 * Prepare a init frame. Note the init frame points to queue info
5498 * structure. Each frame has SGL allocated after first 64 bytes. For
5499 * this frame - since we don't need any SGL - we use SGL's space as
5500 * queue info structure
5501 *
5502 * We will not get a NULL command below. We just created the pool.
5503 */
5504 cmd = megasas_get_cmd(instance);
5505
5506 init_frame = (struct megasas_init_frame *)cmd->frame;
5507 initq_info = (struct megasas_init_queue_info *)
5508 ((unsigned long)init_frame + 64);
5509
5510 init_frame_h = cmd->frame_phys_addr;
5511 initq_info_h = init_frame_h + 64;
5512
5513 context = init_frame->context;
5514 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5515 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5516 init_frame->context = context;
5517
5518 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5519 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5520
5521 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5522 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5523
5524 init_frame->cmd = MFI_CMD_INIT;
5525 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5526 init_frame->queue_info_new_phys_addr_lo =
5527 cpu_to_le32(lower_32_bits(initq_info_h));
5528 init_frame->queue_info_new_phys_addr_hi =
5529 cpu_to_le32(upper_32_bits(initq_info_h));
5530
5531 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5532
5533 /*
5534 * disable the intr before firing the init frame to FW
5535 */
5536 instance->instancet->disable_intr(instance);
5537
5538 /*
5539 * Issue the init frame in polled mode
5540 */
5541
5542 if (megasas_issue_polled(instance, cmd)) {
5543 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5544 megasas_return_cmd(instance, cmd);
5545 goto fail_fw_init;
5546 }
5547
5548 megasas_return_cmd(instance, cmd);
5549
5550 return 0;
5551
5552 fail_fw_init:
5553 return -EINVAL;
5554 }
5555
5556 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5557 megasas_init_adapter_mfi(struct megasas_instance *instance)
5558 {
5559 u32 context_sz;
5560 u32 reply_q_sz;
5561
5562 /*
5563 * Get various operational parameters from status register
5564 */
5565 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5566 /*
5567 * Reduce the max supported cmds by 1. This is to ensure that the
5568 * reply_q_sz (1 more than the max cmd that driver may send)
5569 * does not exceed max cmds that the FW can support
5570 */
5571 instance->max_fw_cmds = instance->max_fw_cmds-1;
5572 instance->max_mfi_cmds = instance->max_fw_cmds;
5573 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5574 0x10;
5575 /*
5576 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5577 * are reserved for IOCTL + driver's internal DCMDs.
5578 */
5579 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5580 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5581 instance->max_scsi_cmds = (instance->max_fw_cmds -
5582 MEGASAS_SKINNY_INT_CMDS);
5583 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5584 } else {
5585 instance->max_scsi_cmds = (instance->max_fw_cmds -
5586 MEGASAS_INT_CMDS);
5587 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5588 }
5589
5590 instance->cur_can_queue = instance->max_scsi_cmds;
5591 /*
5592 * Create a pool of commands
5593 */
5594 if (megasas_alloc_cmds(instance))
5595 goto fail_alloc_cmds;
5596
5597 /*
5598 * Allocate memory for reply queue. Length of reply queue should
5599 * be _one_ more than the maximum commands handled by the firmware.
5600 *
5601 * Note: When FW completes commands, it places corresponding contex
5602 * values in this circular reply queue. This circular queue is a fairly
5603 * typical producer-consumer queue. FW is the producer (of completed
5604 * commands) and the driver is the consumer.
5605 */
5606 context_sz = sizeof(u32);
5607 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5608
5609 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5610 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5611
5612 if (!instance->reply_queue) {
5613 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5614 goto fail_reply_queue;
5615 }
5616
5617 if (megasas_issue_init_mfi(instance))
5618 goto fail_fw_init;
5619
5620 if (megasas_get_ctrl_info(instance)) {
5621 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5622 "Fail from %s %d\n", instance->unique_id,
5623 __func__, __LINE__);
5624 goto fail_fw_init;
5625 }
5626
5627 instance->fw_support_ieee = 0;
5628 instance->fw_support_ieee =
5629 (instance->instancet->read_fw_status_reg(instance) &
5630 0x04000000);
5631
5632 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5633 instance->fw_support_ieee);
5634
5635 if (instance->fw_support_ieee)
5636 instance->flag_ieee = 1;
5637
5638 return 0;
5639
5640 fail_fw_init:
5641
5642 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5643 instance->reply_queue, instance->reply_queue_h);
5644 fail_reply_queue:
5645 megasas_free_cmds(instance);
5646
5647 fail_alloc_cmds:
5648 return 1;
5649 }
5650
5651 static
megasas_setup_irq_poll(struct megasas_instance * instance)5652 void megasas_setup_irq_poll(struct megasas_instance *instance)
5653 {
5654 struct megasas_irq_context *irq_ctx;
5655 u32 count, i;
5656
5657 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5658
5659 /* Initialize IRQ poll */
5660 for (i = 0; i < count; i++) {
5661 irq_ctx = &instance->irq_context[i];
5662 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5663 irq_ctx->irq_poll_scheduled = false;
5664 irq_poll_init(&irq_ctx->irqpoll,
5665 instance->threshold_reply_count,
5666 megasas_irqpoll);
5667 }
5668 }
5669
5670 /*
5671 * megasas_setup_irqs_ioapic - register legacy interrupts.
5672 * @instance: Adapter soft state
5673 *
5674 * Do not enable interrupt, only setup ISRs.
5675 *
5676 * Return 0 on success.
5677 */
5678 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5679 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5680 {
5681 struct pci_dev *pdev;
5682
5683 pdev = instance->pdev;
5684 instance->irq_context[0].instance = instance;
5685 instance->irq_context[0].MSIxIndex = 0;
5686 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5687 "megasas", instance->host->host_no);
5688 if (request_irq(pci_irq_vector(pdev, 0),
5689 instance->instancet->service_isr, IRQF_SHARED,
5690 instance->irq_context->name, &instance->irq_context[0])) {
5691 dev_err(&instance->pdev->dev,
5692 "Failed to register IRQ from %s %d\n",
5693 __func__, __LINE__);
5694 return -1;
5695 }
5696 instance->perf_mode = MR_LATENCY_PERF_MODE;
5697 instance->low_latency_index_start = 0;
5698 return 0;
5699 }
5700
5701 /**
5702 * megasas_setup_irqs_msix - register MSI-x interrupts.
5703 * @instance: Adapter soft state
5704 * @is_probe: Driver probe check
5705 *
5706 * Do not enable interrupt, only setup ISRs.
5707 *
5708 * Return 0 on success.
5709 */
5710 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5711 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5712 {
5713 int i, j;
5714 struct pci_dev *pdev;
5715
5716 pdev = instance->pdev;
5717
5718 /* Try MSI-x */
5719 for (i = 0; i < instance->msix_vectors; i++) {
5720 instance->irq_context[i].instance = instance;
5721 instance->irq_context[i].MSIxIndex = i;
5722 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5723 "megasas", instance->host->host_no, i);
5724 if (request_irq(pci_irq_vector(pdev, i),
5725 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5726 &instance->irq_context[i])) {
5727 dev_err(&instance->pdev->dev,
5728 "Failed to register IRQ for vector %d.\n", i);
5729 for (j = 0; j < i; j++) {
5730 if (j < instance->low_latency_index_start)
5731 irq_update_affinity_hint(
5732 pci_irq_vector(pdev, j), NULL);
5733 free_irq(pci_irq_vector(pdev, j),
5734 &instance->irq_context[j]);
5735 }
5736 /* Retry irq register for IO_APIC*/
5737 instance->msix_vectors = 0;
5738 instance->msix_load_balance = false;
5739 if (is_probe) {
5740 pci_free_irq_vectors(instance->pdev);
5741 return megasas_setup_irqs_ioapic(instance);
5742 } else {
5743 return -1;
5744 }
5745 }
5746 }
5747
5748 return 0;
5749 }
5750
5751 /*
5752 * megasas_destroy_irqs- unregister interrupts.
5753 * @instance: Adapter soft state
5754 * return: void
5755 */
5756 static void
megasas_destroy_irqs(struct megasas_instance * instance)5757 megasas_destroy_irqs(struct megasas_instance *instance) {
5758
5759 int i;
5760 int count;
5761 struct megasas_irq_context *irq_ctx;
5762
5763 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5764 if (instance->adapter_type != MFI_SERIES) {
5765 for (i = 0; i < count; i++) {
5766 irq_ctx = &instance->irq_context[i];
5767 irq_poll_disable(&irq_ctx->irqpoll);
5768 }
5769 }
5770
5771 if (instance->msix_vectors)
5772 for (i = 0; i < instance->msix_vectors; i++) {
5773 if (i < instance->low_latency_index_start)
5774 irq_update_affinity_hint(
5775 pci_irq_vector(instance->pdev, i), NULL);
5776 free_irq(pci_irq_vector(instance->pdev, i),
5777 &instance->irq_context[i]);
5778 }
5779 else
5780 free_irq(pci_irq_vector(instance->pdev, 0),
5781 &instance->irq_context[0]);
5782 }
5783
5784 /**
5785 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5786 * @instance: Adapter soft state
5787 *
5788 * Return 0 on success.
5789 */
5790 void
megasas_setup_jbod_map(struct megasas_instance * instance)5791 megasas_setup_jbod_map(struct megasas_instance *instance)
5792 {
5793 int i;
5794 struct fusion_context *fusion = instance->ctrl_context;
5795 size_t pd_seq_map_sz;
5796
5797 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5798 MAX_PHYSICAL_DEVICES);
5799
5800 instance->use_seqnum_jbod_fp =
5801 instance->support_seqnum_jbod_fp;
5802 if (reset_devices || !fusion ||
5803 !instance->support_seqnum_jbod_fp) {
5804 dev_info(&instance->pdev->dev,
5805 "JBOD sequence map is disabled %s %d\n",
5806 __func__, __LINE__);
5807 instance->use_seqnum_jbod_fp = false;
5808 return;
5809 }
5810
5811 if (fusion->pd_seq_sync[0])
5812 goto skip_alloc;
5813
5814 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5815 fusion->pd_seq_sync[i] = dma_alloc_coherent
5816 (&instance->pdev->dev, pd_seq_map_sz,
5817 &fusion->pd_seq_phys[i], GFP_KERNEL);
5818 if (!fusion->pd_seq_sync[i]) {
5819 dev_err(&instance->pdev->dev,
5820 "Failed to allocate memory from %s %d\n",
5821 __func__, __LINE__);
5822 if (i == 1) {
5823 dma_free_coherent(&instance->pdev->dev,
5824 pd_seq_map_sz, fusion->pd_seq_sync[0],
5825 fusion->pd_seq_phys[0]);
5826 fusion->pd_seq_sync[0] = NULL;
5827 }
5828 instance->use_seqnum_jbod_fp = false;
5829 return;
5830 }
5831 }
5832
5833 skip_alloc:
5834 if (!megasas_sync_pd_seq_num(instance, false) &&
5835 !megasas_sync_pd_seq_num(instance, true))
5836 instance->use_seqnum_jbod_fp = true;
5837 else
5838 instance->use_seqnum_jbod_fp = false;
5839 }
5840
megasas_setup_reply_map(struct megasas_instance * instance)5841 static void megasas_setup_reply_map(struct megasas_instance *instance)
5842 {
5843 const struct cpumask *mask;
5844 unsigned int queue, cpu, low_latency_index_start;
5845
5846 low_latency_index_start = instance->low_latency_index_start;
5847
5848 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5849 mask = pci_irq_get_affinity(instance->pdev, queue);
5850 if (!mask)
5851 goto fallback;
5852
5853 for_each_cpu(cpu, mask)
5854 instance->reply_map[cpu] = queue;
5855 }
5856 return;
5857
5858 fallback:
5859 queue = low_latency_index_start;
5860 for_each_possible_cpu(cpu) {
5861 instance->reply_map[cpu] = queue;
5862 if (queue == (instance->msix_vectors - 1))
5863 queue = low_latency_index_start;
5864 else
5865 queue++;
5866 }
5867 }
5868
5869 /**
5870 * megasas_get_device_list - Get the PD and LD device list from FW.
5871 * @instance: Adapter soft state
5872 * @return: Success or failure
5873 *
5874 * Issue DCMDs to Firmware to get the PD and LD list.
5875 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5876 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5877 */
5878 static
megasas_get_device_list(struct megasas_instance * instance)5879 int megasas_get_device_list(struct megasas_instance *instance)
5880 {
5881 if (instance->enable_fw_dev_list) {
5882 if (megasas_host_device_list_query(instance, true))
5883 return FAILED;
5884 } else {
5885 if (megasas_get_pd_list(instance) < 0) {
5886 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5887 return FAILED;
5888 }
5889
5890 if (megasas_ld_list_query(instance,
5891 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5892 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5893 return FAILED;
5894 }
5895 }
5896
5897 return SUCCESS;
5898 }
5899
5900 /**
5901 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5902 * for high IOPS queues
5903 * @instance: Adapter soft state
5904 * return: void
5905 */
5906 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5907 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5908 {
5909 int i;
5910 unsigned int irq;
5911 const struct cpumask *mask;
5912
5913 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5914 int nid = dev_to_node(&instance->pdev->dev);
5915
5916 if (nid == NUMA_NO_NODE)
5917 nid = 0;
5918 mask = cpumask_of_node(nid);
5919
5920 for (i = 0; i < instance->low_latency_index_start; i++) {
5921 irq = pci_irq_vector(instance->pdev, i);
5922 irq_set_affinity_and_hint(irq, mask);
5923 }
5924 }
5925 }
5926
5927 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5928 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5929 {
5930 int i, irq_flags;
5931 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5932 struct irq_affinity *descp = &desc;
5933
5934 irq_flags = PCI_IRQ_MSIX;
5935
5936 if (instance->smp_affinity_enable)
5937 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5938 else
5939 descp = NULL;
5940
5941 /* Do not allocate msix vectors for poll_queues.
5942 * msix_vectors is always within a range of FW supported reply queue.
5943 */
5944 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5945 instance->low_latency_index_start,
5946 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5947
5948 return i;
5949 }
5950
5951 /**
5952 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5953 * @instance: Adapter soft state
5954 * return: void
5955 */
5956 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5957 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5958 {
5959 int i;
5960 unsigned int num_msix_req;
5961
5962 instance->iopoll_q_count = 0;
5963 if ((instance->adapter_type != MFI_SERIES) &&
5964 poll_queues) {
5965
5966 instance->perf_mode = MR_LATENCY_PERF_MODE;
5967 instance->low_latency_index_start = 1;
5968
5969 /* reserve for default and non-mananged pre-vector. */
5970 if (instance->msix_vectors > (poll_queues + 2))
5971 instance->iopoll_q_count = poll_queues;
5972 else
5973 instance->iopoll_q_count = 0;
5974
5975 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5976 instance->msix_vectors = min(num_msix_req,
5977 instance->msix_vectors);
5978
5979 }
5980
5981 i = __megasas_alloc_irq_vectors(instance);
5982
5983 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5984 || instance->iopoll_q_count) &&
5985 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5986 if (instance->msix_vectors)
5987 pci_free_irq_vectors(instance->pdev);
5988 /* Disable Balanced IOPS mode and try realloc vectors */
5989 instance->perf_mode = MR_LATENCY_PERF_MODE;
5990 instance->low_latency_index_start = 1;
5991 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5992
5993 instance->msix_vectors = min(num_msix_req,
5994 instance->msix_vectors);
5995
5996 instance->iopoll_q_count = 0;
5997 i = __megasas_alloc_irq_vectors(instance);
5998
5999 }
6000
6001 dev_info(&instance->pdev->dev,
6002 "requested/available msix %d/%d poll_queue %d\n",
6003 instance->msix_vectors - instance->iopoll_q_count,
6004 i, instance->iopoll_q_count);
6005
6006 if (i > 0)
6007 instance->msix_vectors = i;
6008 else
6009 instance->msix_vectors = 0;
6010
6011 if (instance->smp_affinity_enable)
6012 megasas_set_high_iops_queue_affinity_and_hint(instance);
6013 }
6014
6015 /**
6016 * megasas_init_fw - Initializes the FW
6017 * @instance: Adapter soft state
6018 *
6019 * This is the main function for initializing firmware
6020 */
6021
megasas_init_fw(struct megasas_instance * instance)6022 static int megasas_init_fw(struct megasas_instance *instance)
6023 {
6024 u32 max_sectors_1;
6025 u32 max_sectors_2, tmp_sectors, msix_enable;
6026 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6027 resource_size_t base_addr;
6028 void *base_addr_phys;
6029 struct megasas_ctrl_info *ctrl_info = NULL;
6030 unsigned long bar_list;
6031 int i, j, loop;
6032 struct IOV_111 *iovPtr;
6033 struct fusion_context *fusion;
6034 bool intr_coalescing;
6035 unsigned int num_msix_req;
6036 u16 lnksta, speed;
6037
6038 fusion = instance->ctrl_context;
6039
6040 /* Find first memory bar */
6041 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6042 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6043 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6044 "megasas: LSI")) {
6045 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6046 return -EBUSY;
6047 }
6048
6049 base_addr = pci_resource_start(instance->pdev, instance->bar);
6050 instance->reg_set = ioremap(base_addr, 8192);
6051
6052 if (!instance->reg_set) {
6053 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6054 goto fail_ioremap;
6055 }
6056
6057 base_addr_phys = &base_addr;
6058 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6059 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6060 instance->bar, base_addr_phys, instance->reg_set);
6061
6062 if (instance->adapter_type != MFI_SERIES)
6063 instance->instancet = &megasas_instance_template_fusion;
6064 else {
6065 switch (instance->pdev->device) {
6066 case PCI_DEVICE_ID_LSI_SAS1078R:
6067 case PCI_DEVICE_ID_LSI_SAS1078DE:
6068 instance->instancet = &megasas_instance_template_ppc;
6069 break;
6070 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6071 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6072 instance->instancet = &megasas_instance_template_gen2;
6073 break;
6074 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6075 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6076 instance->instancet = &megasas_instance_template_skinny;
6077 break;
6078 case PCI_DEVICE_ID_LSI_SAS1064R:
6079 case PCI_DEVICE_ID_DELL_PERC5:
6080 default:
6081 instance->instancet = &megasas_instance_template_xscale;
6082 instance->pd_list_not_supported = 1;
6083 break;
6084 }
6085 }
6086
6087 if (megasas_transition_to_ready(instance, 0)) {
6088 dev_info(&instance->pdev->dev,
6089 "Failed to transition controller to ready from %s!\n",
6090 __func__);
6091 if (instance->adapter_type != MFI_SERIES) {
6092 status_reg = instance->instancet->read_fw_status_reg(
6093 instance);
6094 if (status_reg & MFI_RESET_ADAPTER) {
6095 if (megasas_adp_reset_wait_for_ready
6096 (instance, true, 0) == FAILED)
6097 goto fail_ready_state;
6098 } else {
6099 goto fail_ready_state;
6100 }
6101 } else {
6102 atomic_set(&instance->fw_reset_no_pci_access, 1);
6103 instance->instancet->adp_reset
6104 (instance, instance->reg_set);
6105 atomic_set(&instance->fw_reset_no_pci_access, 0);
6106
6107 /*waiting for about 30 second before retry*/
6108 ssleep(30);
6109
6110 if (megasas_transition_to_ready(instance, 0))
6111 goto fail_ready_state;
6112 }
6113
6114 dev_info(&instance->pdev->dev,
6115 "FW restarted successfully from %s!\n",
6116 __func__);
6117 }
6118
6119 megasas_init_ctrl_params(instance);
6120
6121 if (megasas_set_dma_mask(instance))
6122 goto fail_ready_state;
6123
6124 if (megasas_alloc_ctrl_mem(instance))
6125 goto fail_alloc_dma_buf;
6126
6127 if (megasas_alloc_ctrl_dma_buffers(instance))
6128 goto fail_alloc_dma_buf;
6129
6130 fusion = instance->ctrl_context;
6131
6132 if (instance->adapter_type >= VENTURA_SERIES) {
6133 scratch_pad_2 =
6134 megasas_readl(instance,
6135 &instance->reg_set->outbound_scratch_pad_2);
6136 instance->max_raid_mapsize = ((scratch_pad_2 >>
6137 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6138 MR_MAX_RAID_MAP_SIZE_MASK);
6139 }
6140
6141 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6142
6143 switch (instance->adapter_type) {
6144 case VENTURA_SERIES:
6145 fusion->pcie_bw_limitation = true;
6146 break;
6147 case AERO_SERIES:
6148 fusion->r56_div_offload = true;
6149 break;
6150 default:
6151 break;
6152 }
6153
6154 /* Check if MSI-X is supported while in ready state */
6155 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6156 0x4000000) >> 0x1a;
6157 if (msix_enable && !msix_disable) {
6158
6159 scratch_pad_1 = megasas_readl
6160 (instance, &instance->reg_set->outbound_scratch_pad_1);
6161 /* Check max MSI-X vectors */
6162 if (fusion) {
6163 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6164 /* Thunderbolt Series*/
6165 instance->msix_vectors = (scratch_pad_1
6166 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6167 } else {
6168 instance->msix_vectors = ((scratch_pad_1
6169 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6170 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6171
6172 /*
6173 * For Invader series, > 8 MSI-x vectors
6174 * supported by FW/HW implies combined
6175 * reply queue mode is enabled.
6176 * For Ventura series, > 16 MSI-x vectors
6177 * supported by FW/HW implies combined
6178 * reply queue mode is enabled.
6179 */
6180 switch (instance->adapter_type) {
6181 case INVADER_SERIES:
6182 if (instance->msix_vectors > 8)
6183 instance->msix_combined = true;
6184 break;
6185 case AERO_SERIES:
6186 case VENTURA_SERIES:
6187 if (instance->msix_vectors > 16)
6188 instance->msix_combined = true;
6189 break;
6190 }
6191
6192 if (rdpq_enable)
6193 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6194 1 : 0;
6195
6196 if (instance->adapter_type >= INVADER_SERIES &&
6197 !instance->msix_combined) {
6198 instance->msix_load_balance = true;
6199 instance->smp_affinity_enable = false;
6200 }
6201
6202 /* Save 1-15 reply post index address to local memory
6203 * Index 0 is already saved from reg offset
6204 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6205 */
6206 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6207 instance->reply_post_host_index_addr[loop] =
6208 (u32 __iomem *)
6209 ((u8 __iomem *)instance->reg_set +
6210 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6211 + (loop * 0x10));
6212 }
6213 }
6214
6215 dev_info(&instance->pdev->dev,
6216 "firmware supports msix\t: (%d)",
6217 instance->msix_vectors);
6218 if (msix_vectors)
6219 instance->msix_vectors = min(msix_vectors,
6220 instance->msix_vectors);
6221 } else /* MFI adapters */
6222 instance->msix_vectors = 1;
6223
6224
6225 /*
6226 * For Aero (if some conditions are met), driver will configure a
6227 * few additional reply queues with interrupt coalescing enabled.
6228 * These queues with interrupt coalescing enabled are called
6229 * High IOPS queues and rest of reply queues (based on number of
6230 * logical CPUs) are termed as Low latency queues.
6231 *
6232 * Total Number of reply queues = High IOPS queues + low latency queues
6233 *
6234 * For rest of fusion adapters, 1 additional reply queue will be
6235 * reserved for management commands, rest of reply queues
6236 * (based on number of logical CPUs) will be used for IOs and
6237 * referenced as IO queues.
6238 * Total Number of reply queues = 1 + IO queues
6239 *
6240 * MFI adapters supports single MSI-x so single reply queue
6241 * will be used for IO and management commands.
6242 */
6243
6244 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6245 true : false;
6246 if (intr_coalescing &&
6247 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6248 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6249 instance->perf_mode = MR_BALANCED_PERF_MODE;
6250 else
6251 instance->perf_mode = MR_LATENCY_PERF_MODE;
6252
6253
6254 if (instance->adapter_type == AERO_SERIES) {
6255 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6256 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6257
6258 /*
6259 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6260 * in latency perf mode and enable R1 PCI bandwidth algorithm
6261 */
6262 if (speed < 0x4) {
6263 instance->perf_mode = MR_LATENCY_PERF_MODE;
6264 fusion->pcie_bw_limitation = true;
6265 }
6266
6267 /*
6268 * Performance mode settings provided through module parameter-perf_mode will
6269 * take affect only for:
6270 * 1. Aero family of adapters.
6271 * 2. When user sets module parameter- perf_mode in range of 0-2.
6272 */
6273 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6274 (perf_mode <= MR_LATENCY_PERF_MODE))
6275 instance->perf_mode = perf_mode;
6276 /*
6277 * If intr coalescing is not supported by controller FW, then IOPS
6278 * and Balanced modes are not feasible.
6279 */
6280 if (!intr_coalescing)
6281 instance->perf_mode = MR_LATENCY_PERF_MODE;
6282
6283 }
6284
6285 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6286 instance->low_latency_index_start =
6287 MR_HIGH_IOPS_QUEUE_COUNT;
6288 else
6289 instance->low_latency_index_start = 1;
6290
6291 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6292
6293 instance->msix_vectors = min(num_msix_req,
6294 instance->msix_vectors);
6295
6296 megasas_alloc_irq_vectors(instance);
6297 if (!instance->msix_vectors)
6298 instance->msix_load_balance = false;
6299 }
6300 /*
6301 * MSI-X host index 0 is common for all adapter.
6302 * It is used for all MPT based Adapters.
6303 */
6304 if (instance->msix_combined) {
6305 instance->reply_post_host_index_addr[0] =
6306 (u32 *)((u8 *)instance->reg_set +
6307 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6308 } else {
6309 instance->reply_post_host_index_addr[0] =
6310 (u32 *)((u8 *)instance->reg_set +
6311 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6312 }
6313
6314 if (!instance->msix_vectors) {
6315 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_INTX);
6316 if (i < 0)
6317 goto fail_init_adapter;
6318 }
6319
6320 megasas_setup_reply_map(instance);
6321
6322 dev_info(&instance->pdev->dev,
6323 "current msix/online cpus\t: (%d/%d)\n",
6324 instance->msix_vectors, (unsigned int)num_online_cpus());
6325 dev_info(&instance->pdev->dev,
6326 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6327
6328 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6329 (unsigned long)instance);
6330
6331 /*
6332 * Below are default value for legacy Firmware.
6333 * non-fusion based controllers
6334 */
6335 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6336 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6337 /* Get operational params, sge flags, send init cmd to controller */
6338 if (instance->instancet->init_adapter(instance))
6339 goto fail_init_adapter;
6340
6341 if (instance->adapter_type >= VENTURA_SERIES) {
6342 scratch_pad_3 =
6343 megasas_readl(instance,
6344 &instance->reg_set->outbound_scratch_pad_3);
6345 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6346 MR_DEFAULT_NVME_PAGE_SHIFT)
6347 instance->nvme_page_size =
6348 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6349
6350 dev_info(&instance->pdev->dev,
6351 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6352 }
6353
6354 if (instance->msix_vectors ?
6355 megasas_setup_irqs_msix(instance, 1) :
6356 megasas_setup_irqs_ioapic(instance))
6357 goto fail_init_adapter;
6358
6359 if (instance->adapter_type != MFI_SERIES)
6360 megasas_setup_irq_poll(instance);
6361
6362 instance->instancet->enable_intr(instance);
6363
6364 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6365
6366 megasas_setup_jbod_map(instance);
6367
6368 if (megasas_get_device_list(instance) != SUCCESS) {
6369 dev_err(&instance->pdev->dev,
6370 "%s: megasas_get_device_list failed\n",
6371 __func__);
6372 goto fail_get_ld_pd_list;
6373 }
6374
6375 /* stream detection initialization */
6376 if (instance->adapter_type >= VENTURA_SERIES) {
6377 fusion->stream_detect_by_ld =
6378 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6379 sizeof(struct LD_STREAM_DETECT *),
6380 GFP_KERNEL);
6381 if (!fusion->stream_detect_by_ld) {
6382 dev_err(&instance->pdev->dev,
6383 "unable to allocate stream detection for pool of LDs\n");
6384 goto fail_get_ld_pd_list;
6385 }
6386 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6387 fusion->stream_detect_by_ld[i] =
6388 kzalloc(sizeof(struct LD_STREAM_DETECT),
6389 GFP_KERNEL);
6390 if (!fusion->stream_detect_by_ld[i]) {
6391 dev_err(&instance->pdev->dev,
6392 "unable to allocate stream detect by LD\n");
6393 for (j = 0; j < i; ++j)
6394 kfree(fusion->stream_detect_by_ld[j]);
6395 kfree(fusion->stream_detect_by_ld);
6396 fusion->stream_detect_by_ld = NULL;
6397 goto fail_get_ld_pd_list;
6398 }
6399 fusion->stream_detect_by_ld[i]->mru_bit_map
6400 = MR_STREAM_BITMAP;
6401 }
6402 }
6403
6404 /*
6405 * Compute the max allowed sectors per IO: The controller info has two
6406 * limits on max sectors. Driver should use the minimum of these two.
6407 *
6408 * 1 << stripe_sz_ops.min = max sectors per strip
6409 *
6410 * Note that older firmwares ( < FW ver 30) didn't report information
6411 * to calculate max_sectors_1. So the number ended up as zero always.
6412 */
6413 tmp_sectors = 0;
6414 ctrl_info = instance->ctrl_info_buf;
6415
6416 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6417 le16_to_cpu(ctrl_info->max_strips_per_io);
6418 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6419
6420 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6421
6422 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6423 instance->passive = ctrl_info->cluster.passive;
6424 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6425 instance->UnevenSpanSupport =
6426 ctrl_info->adapterOperations2.supportUnevenSpans;
6427 if (instance->UnevenSpanSupport) {
6428 struct fusion_context *fusion = instance->ctrl_context;
6429 if (MR_ValidateMapInfo(instance, instance->map_id))
6430 fusion->fast_path_io = 1;
6431 else
6432 fusion->fast_path_io = 0;
6433
6434 }
6435 if (ctrl_info->host_interface.SRIOV) {
6436 instance->requestorId = ctrl_info->iov.requestorId;
6437 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6438 if (!ctrl_info->adapterOperations2.activePassive)
6439 instance->PlasmaFW111 = 1;
6440
6441 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6442 instance->PlasmaFW111 ? "1.11" : "new");
6443
6444 if (instance->PlasmaFW111) {
6445 iovPtr = (struct IOV_111 *)
6446 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6447 instance->requestorId = iovPtr->requestorId;
6448 }
6449 }
6450 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6451 instance->requestorId);
6452 }
6453
6454 instance->crash_dump_fw_support =
6455 ctrl_info->adapterOperations3.supportCrashDump;
6456 instance->crash_dump_drv_support =
6457 (instance->crash_dump_fw_support &&
6458 instance->crash_dump_buf);
6459 if (instance->crash_dump_drv_support)
6460 megasas_set_crash_dump_params(instance,
6461 MR_CRASH_BUF_TURN_OFF);
6462
6463 else {
6464 if (instance->crash_dump_buf)
6465 dma_free_coherent(&instance->pdev->dev,
6466 CRASH_DMA_BUF_SIZE,
6467 instance->crash_dump_buf,
6468 instance->crash_dump_h);
6469 instance->crash_dump_buf = NULL;
6470 }
6471
6472 if (instance->snapdump_wait_time) {
6473 megasas_get_snapdump_properties(instance);
6474 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6475 instance->snapdump_wait_time);
6476 }
6477
6478 dev_info(&instance->pdev->dev,
6479 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6480 le16_to_cpu(ctrl_info->pci.vendor_id),
6481 le16_to_cpu(ctrl_info->pci.device_id),
6482 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6483 le16_to_cpu(ctrl_info->pci.sub_device_id));
6484 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6485 instance->UnevenSpanSupport ? "yes" : "no");
6486 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6487 instance->crash_dump_drv_support ? "yes" : "no");
6488 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6489 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6490
6491 instance->max_sectors_per_req = instance->max_num_sge *
6492 SGE_BUFFER_SIZE / 512;
6493 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6494 instance->max_sectors_per_req = tmp_sectors;
6495
6496 /* Check for valid throttlequeuedepth module parameter */
6497 if (throttlequeuedepth &&
6498 throttlequeuedepth <= instance->max_scsi_cmds)
6499 instance->throttlequeuedepth = throttlequeuedepth;
6500 else
6501 instance->throttlequeuedepth =
6502 MEGASAS_THROTTLE_QUEUE_DEPTH;
6503
6504 if ((resetwaittime < 1) ||
6505 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6506 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6507
6508 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6509 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6510
6511 /* Launch SR-IOV heartbeat timer */
6512 if (instance->requestorId) {
6513 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6514 megasas_start_timer(instance);
6515 } else {
6516 instance->skip_heartbeat_timer_del = 1;
6517 goto fail_get_ld_pd_list;
6518 }
6519 }
6520
6521 /*
6522 * Create and start watchdog thread which will monitor
6523 * controller state every 1 sec and trigger OCR when
6524 * it enters fault state
6525 */
6526 if (instance->adapter_type != MFI_SERIES)
6527 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6528 goto fail_start_watchdog;
6529
6530 return 0;
6531
6532 fail_start_watchdog:
6533 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6534 del_timer_sync(&instance->sriov_heartbeat_timer);
6535 fail_get_ld_pd_list:
6536 instance->instancet->disable_intr(instance);
6537 megasas_destroy_irqs(instance);
6538 fail_init_adapter:
6539 if (instance->msix_vectors)
6540 pci_free_irq_vectors(instance->pdev);
6541 instance->msix_vectors = 0;
6542 fail_alloc_dma_buf:
6543 megasas_free_ctrl_dma_buffers(instance);
6544 megasas_free_ctrl_mem(instance);
6545 fail_ready_state:
6546 iounmap(instance->reg_set);
6547
6548 fail_ioremap:
6549 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6550
6551 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6552 __func__, __LINE__);
6553 return -EINVAL;
6554 }
6555
6556 /**
6557 * megasas_release_mfi - Reverses the FW initialization
6558 * @instance: Adapter soft state
6559 */
megasas_release_mfi(struct megasas_instance * instance)6560 static void megasas_release_mfi(struct megasas_instance *instance)
6561 {
6562 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6563
6564 if (instance->reply_queue)
6565 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6566 instance->reply_queue, instance->reply_queue_h);
6567
6568 megasas_free_cmds(instance);
6569
6570 iounmap(instance->reg_set);
6571
6572 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6573 }
6574
6575 /**
6576 * megasas_get_seq_num - Gets latest event sequence numbers
6577 * @instance: Adapter soft state
6578 * @eli: FW event log sequence numbers information
6579 *
6580 * FW maintains a log of all events in a non-volatile area. Upper layers would
6581 * usually find out the latest sequence number of the events, the seq number at
6582 * the boot etc. They would "read" all the events below the latest seq number
6583 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6584 * number), they would subsribe to AEN (asynchronous event notification) and
6585 * wait for the events to happen.
6586 */
6587 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6588 megasas_get_seq_num(struct megasas_instance *instance,
6589 struct megasas_evt_log_info *eli)
6590 {
6591 struct megasas_cmd *cmd;
6592 struct megasas_dcmd_frame *dcmd;
6593 struct megasas_evt_log_info *el_info;
6594 dma_addr_t el_info_h = 0;
6595 int ret;
6596
6597 cmd = megasas_get_cmd(instance);
6598
6599 if (!cmd) {
6600 return -ENOMEM;
6601 }
6602
6603 dcmd = &cmd->frame->dcmd;
6604 el_info = dma_alloc_coherent(&instance->pdev->dev,
6605 sizeof(struct megasas_evt_log_info),
6606 &el_info_h, GFP_KERNEL);
6607 if (!el_info) {
6608 megasas_return_cmd(instance, cmd);
6609 return -ENOMEM;
6610 }
6611
6612 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6613
6614 dcmd->cmd = MFI_CMD_DCMD;
6615 dcmd->cmd_status = 0x0;
6616 dcmd->sge_count = 1;
6617 dcmd->flags = MFI_FRAME_DIR_READ;
6618 dcmd->timeout = 0;
6619 dcmd->pad_0 = 0;
6620 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6621 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6622
6623 megasas_set_dma_settings(instance, dcmd, el_info_h,
6624 sizeof(struct megasas_evt_log_info));
6625
6626 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6627 if (ret != DCMD_SUCCESS) {
6628 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6629 __func__, __LINE__);
6630 goto dcmd_failed;
6631 }
6632
6633 /*
6634 * Copy the data back into callers buffer
6635 */
6636 eli->newest_seq_num = el_info->newest_seq_num;
6637 eli->oldest_seq_num = el_info->oldest_seq_num;
6638 eli->clear_seq_num = el_info->clear_seq_num;
6639 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6640 eli->boot_seq_num = el_info->boot_seq_num;
6641
6642 dcmd_failed:
6643 dma_free_coherent(&instance->pdev->dev,
6644 sizeof(struct megasas_evt_log_info),
6645 el_info, el_info_h);
6646
6647 megasas_return_cmd(instance, cmd);
6648
6649 return ret;
6650 }
6651
6652 /**
6653 * megasas_register_aen - Registers for asynchronous event notification
6654 * @instance: Adapter soft state
6655 * @seq_num: The starting sequence number
6656 * @class_locale_word: Class of the event
6657 *
6658 * This function subscribes for AEN for events beyond the @seq_num. It requests
6659 * to be notified if and only if the event is of type @class_locale
6660 */
6661 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6662 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6663 u32 class_locale_word)
6664 {
6665 int ret_val;
6666 struct megasas_cmd *cmd;
6667 struct megasas_dcmd_frame *dcmd;
6668 union megasas_evt_class_locale curr_aen;
6669 union megasas_evt_class_locale prev_aen;
6670
6671 /*
6672 * If there an AEN pending already (aen_cmd), check if the
6673 * class_locale of that pending AEN is inclusive of the new
6674 * AEN request we currently have. If it is, then we don't have
6675 * to do anything. In other words, whichever events the current
6676 * AEN request is subscribing to, have already been subscribed
6677 * to.
6678 *
6679 * If the old_cmd is _not_ inclusive, then we have to abort
6680 * that command, form a class_locale that is superset of both
6681 * old and current and re-issue to the FW
6682 */
6683
6684 curr_aen.word = class_locale_word;
6685
6686 if (instance->aen_cmd) {
6687
6688 prev_aen.word =
6689 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6690
6691 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6692 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6693 dev_info(&instance->pdev->dev,
6694 "%s %d out of range class %d send by application\n",
6695 __func__, __LINE__, curr_aen.members.class);
6696 return 0;
6697 }
6698
6699 /*
6700 * A class whose enum value is smaller is inclusive of all
6701 * higher values. If a PROGRESS (= -1) was previously
6702 * registered, then a new registration requests for higher
6703 * classes need not be sent to FW. They are automatically
6704 * included.
6705 *
6706 * Locale numbers don't have such hierarchy. They are bitmap
6707 * values
6708 */
6709 if ((prev_aen.members.class <= curr_aen.members.class) &&
6710 !((prev_aen.members.locale & curr_aen.members.locale) ^
6711 curr_aen.members.locale)) {
6712 /*
6713 * Previously issued event registration includes
6714 * current request. Nothing to do.
6715 */
6716 return 0;
6717 } else {
6718 curr_aen.members.locale |= prev_aen.members.locale;
6719
6720 if (prev_aen.members.class < curr_aen.members.class)
6721 curr_aen.members.class = prev_aen.members.class;
6722
6723 instance->aen_cmd->abort_aen = 1;
6724 ret_val = megasas_issue_blocked_abort_cmd(instance,
6725 instance->
6726 aen_cmd, 30);
6727
6728 if (ret_val) {
6729 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6730 "previous AEN command\n");
6731 return ret_val;
6732 }
6733 }
6734 }
6735
6736 cmd = megasas_get_cmd(instance);
6737
6738 if (!cmd)
6739 return -ENOMEM;
6740
6741 dcmd = &cmd->frame->dcmd;
6742
6743 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6744
6745 /*
6746 * Prepare DCMD for aen registration
6747 */
6748 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6749
6750 dcmd->cmd = MFI_CMD_DCMD;
6751 dcmd->cmd_status = 0x0;
6752 dcmd->sge_count = 1;
6753 dcmd->flags = MFI_FRAME_DIR_READ;
6754 dcmd->timeout = 0;
6755 dcmd->pad_0 = 0;
6756 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6757 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6758 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6759 instance->last_seq_num = seq_num;
6760 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6761
6762 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6763 sizeof(struct megasas_evt_detail));
6764
6765 if (instance->aen_cmd != NULL) {
6766 megasas_return_cmd(instance, cmd);
6767 return 0;
6768 }
6769
6770 /*
6771 * Store reference to the cmd used to register for AEN. When an
6772 * application wants us to register for AEN, we have to abort this
6773 * cmd and re-register with a new EVENT LOCALE supplied by that app
6774 */
6775 instance->aen_cmd = cmd;
6776
6777 /*
6778 * Issue the aen registration frame
6779 */
6780 instance->instancet->issue_dcmd(instance, cmd);
6781
6782 return 0;
6783 }
6784
6785 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6786 *
6787 * This DCMD will fetch few properties of LD/system PD defined
6788 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6789 *
6790 * DCMD send by drivers whenever new target is added to the OS.
6791 *
6792 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6793 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6794 * 0 = system PD, 1 = LD.
6795 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6796 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6797 *
6798 * @instance: Adapter soft state
6799 * @sdev: OS provided scsi device
6800 *
6801 * Returns 0 on success non-zero on failure.
6802 */
6803 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6804 megasas_get_target_prop(struct megasas_instance *instance,
6805 struct scsi_device *sdev)
6806 {
6807 int ret;
6808 struct megasas_cmd *cmd;
6809 struct megasas_dcmd_frame *dcmd;
6810 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6811 sdev->id;
6812
6813 cmd = megasas_get_cmd(instance);
6814
6815 if (!cmd) {
6816 dev_err(&instance->pdev->dev,
6817 "Failed to get cmd %s\n", __func__);
6818 return -ENOMEM;
6819 }
6820
6821 dcmd = &cmd->frame->dcmd;
6822
6823 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6824 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6825 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6826
6827 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6828 dcmd->cmd = MFI_CMD_DCMD;
6829 dcmd->cmd_status = 0xFF;
6830 dcmd->sge_count = 1;
6831 dcmd->flags = MFI_FRAME_DIR_READ;
6832 dcmd->timeout = 0;
6833 dcmd->pad_0 = 0;
6834 dcmd->data_xfer_len =
6835 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6836 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6837
6838 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6839 sizeof(struct MR_TARGET_PROPERTIES));
6840
6841 if ((instance->adapter_type != MFI_SERIES) &&
6842 !instance->mask_interrupts)
6843 ret = megasas_issue_blocked_cmd(instance,
6844 cmd, MFI_IO_TIMEOUT_SECS);
6845 else
6846 ret = megasas_issue_polled(instance, cmd);
6847
6848 switch (ret) {
6849 case DCMD_TIMEOUT:
6850 switch (dcmd_timeout_ocr_possible(instance)) {
6851 case INITIATE_OCR:
6852 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6853 mutex_unlock(&instance->reset_mutex);
6854 megasas_reset_fusion(instance->host,
6855 MFI_IO_TIMEOUT_OCR);
6856 mutex_lock(&instance->reset_mutex);
6857 break;
6858 case KILL_ADAPTER:
6859 megaraid_sas_kill_hba(instance);
6860 break;
6861 case IGNORE_TIMEOUT:
6862 dev_info(&instance->pdev->dev,
6863 "Ignore DCMD timeout: %s %d\n",
6864 __func__, __LINE__);
6865 break;
6866 }
6867 break;
6868
6869 default:
6870 megasas_return_cmd(instance, cmd);
6871 }
6872 if (ret != DCMD_SUCCESS)
6873 dev_err(&instance->pdev->dev,
6874 "return from %s %d return value %d\n",
6875 __func__, __LINE__, ret);
6876
6877 return ret;
6878 }
6879
6880 /**
6881 * megasas_start_aen - Subscribes to AEN during driver load time
6882 * @instance: Adapter soft state
6883 */
megasas_start_aen(struct megasas_instance * instance)6884 static int megasas_start_aen(struct megasas_instance *instance)
6885 {
6886 struct megasas_evt_log_info eli;
6887 union megasas_evt_class_locale class_locale;
6888
6889 /*
6890 * Get the latest sequence number from FW
6891 */
6892 memset(&eli, 0, sizeof(eli));
6893
6894 if (megasas_get_seq_num(instance, &eli))
6895 return -1;
6896
6897 /*
6898 * Register AEN with FW for latest sequence number plus 1
6899 */
6900 class_locale.members.reserved = 0;
6901 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6902 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6903
6904 return megasas_register_aen(instance,
6905 le32_to_cpu(eli.newest_seq_num) + 1,
6906 class_locale.word);
6907 }
6908
6909 /**
6910 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6911 * @instance: Adapter soft state
6912 */
megasas_io_attach(struct megasas_instance * instance)6913 static int megasas_io_attach(struct megasas_instance *instance)
6914 {
6915 struct Scsi_Host *host = instance->host;
6916
6917 /*
6918 * Export parameters required by SCSI mid-layer
6919 */
6920 host->unique_id = instance->unique_id;
6921 host->can_queue = instance->max_scsi_cmds;
6922 host->this_id = instance->init_id;
6923 host->sg_tablesize = instance->max_num_sge;
6924
6925 if (instance->fw_support_ieee)
6926 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6927
6928 /*
6929 * Check if the module parameter value for max_sectors can be used
6930 */
6931 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6932 instance->max_sectors_per_req = max_sectors;
6933 else {
6934 if (max_sectors) {
6935 if (((instance->pdev->device ==
6936 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6937 (instance->pdev->device ==
6938 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6939 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6940 instance->max_sectors_per_req = max_sectors;
6941 } else {
6942 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6943 "and <= %d (or < 1MB for GEN2 controller)\n",
6944 instance->max_sectors_per_req);
6945 }
6946 }
6947 }
6948
6949 host->max_sectors = instance->max_sectors_per_req;
6950 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6951 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6952 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6953 host->max_lun = MEGASAS_MAX_LUN;
6954 host->max_cmd_len = 16;
6955
6956 /* Use shared host tagset only for fusion adaptors
6957 * if there are managed interrupts (smp affinity enabled case).
6958 * Single msix_vectors in kdump, so shared host tag is also disabled.
6959 */
6960
6961 host->host_tagset = 0;
6962 host->nr_hw_queues = 1;
6963
6964 if ((instance->adapter_type != MFI_SERIES) &&
6965 (instance->msix_vectors > instance->low_latency_index_start) &&
6966 host_tagset_enable &&
6967 instance->smp_affinity_enable) {
6968 host->host_tagset = 1;
6969 host->nr_hw_queues = instance->msix_vectors -
6970 instance->low_latency_index_start + instance->iopoll_q_count;
6971 if (instance->iopoll_q_count)
6972 host->nr_maps = 3;
6973 } else {
6974 instance->iopoll_q_count = 0;
6975 }
6976
6977 dev_info(&instance->pdev->dev,
6978 "Max firmware commands: %d shared with default "
6979 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6980 host->nr_hw_queues - instance->iopoll_q_count,
6981 instance->iopoll_q_count);
6982 /*
6983 * Notify the mid-layer about the new controller
6984 */
6985 if (scsi_add_host(host, &instance->pdev->dev)) {
6986 dev_err(&instance->pdev->dev,
6987 "Failed to add host from %s %d\n",
6988 __func__, __LINE__);
6989 return -ENODEV;
6990 }
6991
6992 return 0;
6993 }
6994
6995 /**
6996 * megasas_set_dma_mask - Set DMA mask for supported controllers
6997 *
6998 * @instance: Adapter soft state
6999 * Description:
7000 *
7001 * For Ventura, driver/FW will operate in 63bit DMA addresses.
7002 *
7003 * For invader-
7004 * By default, driver/FW will operate in 32bit DMA addresses
7005 * for consistent DMA mapping but if 32 bit consistent
7006 * DMA mask fails, driver will try with 63 bit consistent
7007 * mask provided FW is true 63bit DMA capable
7008 *
7009 * For older controllers(Thunderbolt and MFI based adapters)-
7010 * driver/FW will operate in 32 bit consistent DMA addresses.
7011 */
7012 static int
megasas_set_dma_mask(struct megasas_instance * instance)7013 megasas_set_dma_mask(struct megasas_instance *instance)
7014 {
7015 u64 consistent_mask;
7016 struct pci_dev *pdev;
7017 u32 scratch_pad_1;
7018
7019 pdev = instance->pdev;
7020 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7021 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7022
7023 if (IS_DMA64) {
7024 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7025 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7026 goto fail_set_dma_mask;
7027
7028 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7029 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7030 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7031 /*
7032 * If 32 bit DMA mask fails, then try for 64 bit mask
7033 * for FW capable of handling 64 bit DMA.
7034 */
7035 scratch_pad_1 = megasas_readl
7036 (instance, &instance->reg_set->outbound_scratch_pad_1);
7037
7038 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7039 goto fail_set_dma_mask;
7040 else if (dma_set_mask_and_coherent(&pdev->dev,
7041 DMA_BIT_MASK(63)))
7042 goto fail_set_dma_mask;
7043 }
7044 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7045 goto fail_set_dma_mask;
7046
7047 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7048 instance->consistent_mask_64bit = false;
7049 else
7050 instance->consistent_mask_64bit = true;
7051
7052 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7053 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7054 (instance->consistent_mask_64bit ? "63" : "32"));
7055
7056 return 0;
7057
7058 fail_set_dma_mask:
7059 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7060 return -1;
7061
7062 }
7063
7064 /*
7065 * megasas_set_adapter_type - Set adapter type.
7066 * Supported controllers can be divided in
7067 * different categories-
7068 * enum MR_ADAPTER_TYPE {
7069 * MFI_SERIES = 1,
7070 * THUNDERBOLT_SERIES = 2,
7071 * INVADER_SERIES = 3,
7072 * VENTURA_SERIES = 4,
7073 * AERO_SERIES = 5,
7074 * };
7075 * @instance: Adapter soft state
7076 * return: void
7077 */
megasas_set_adapter_type(struct megasas_instance * instance)7078 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7079 {
7080 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7081 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7082 instance->adapter_type = MFI_SERIES;
7083 } else {
7084 switch (instance->pdev->device) {
7085 case PCI_DEVICE_ID_LSI_AERO_10E1:
7086 case PCI_DEVICE_ID_LSI_AERO_10E2:
7087 case PCI_DEVICE_ID_LSI_AERO_10E5:
7088 case PCI_DEVICE_ID_LSI_AERO_10E6:
7089 instance->adapter_type = AERO_SERIES;
7090 break;
7091 case PCI_DEVICE_ID_LSI_VENTURA:
7092 case PCI_DEVICE_ID_LSI_CRUSADER:
7093 case PCI_DEVICE_ID_LSI_HARPOON:
7094 case PCI_DEVICE_ID_LSI_TOMCAT:
7095 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7096 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7097 instance->adapter_type = VENTURA_SERIES;
7098 break;
7099 case PCI_DEVICE_ID_LSI_FUSION:
7100 case PCI_DEVICE_ID_LSI_PLASMA:
7101 instance->adapter_type = THUNDERBOLT_SERIES;
7102 break;
7103 case PCI_DEVICE_ID_LSI_INVADER:
7104 case PCI_DEVICE_ID_LSI_INTRUDER:
7105 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7106 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7107 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7108 case PCI_DEVICE_ID_LSI_FURY:
7109 instance->adapter_type = INVADER_SERIES;
7110 break;
7111 default: /* For all other supported controllers */
7112 instance->adapter_type = MFI_SERIES;
7113 break;
7114 }
7115 }
7116 }
7117
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7118 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7119 {
7120 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7121 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7122 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7123 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7124
7125 if (!instance->producer || !instance->consumer) {
7126 dev_err(&instance->pdev->dev,
7127 "Failed to allocate memory for producer, consumer\n");
7128 return -1;
7129 }
7130
7131 *instance->producer = 0;
7132 *instance->consumer = 0;
7133 return 0;
7134 }
7135
7136 /**
7137 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7138 * structures which are not common across MFI
7139 * adapters and fusion adapters.
7140 * For MFI based adapters, allocate producer and
7141 * consumer buffers. For fusion adapters, allocate
7142 * memory for fusion context.
7143 * @instance: Adapter soft state
7144 * return: 0 for SUCCESS
7145 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7146 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7147 {
7148 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7149 GFP_KERNEL);
7150 if (!instance->reply_map)
7151 return -ENOMEM;
7152
7153 switch (instance->adapter_type) {
7154 case MFI_SERIES:
7155 if (megasas_alloc_mfi_ctrl_mem(instance))
7156 return -ENOMEM;
7157 break;
7158 case AERO_SERIES:
7159 case VENTURA_SERIES:
7160 case THUNDERBOLT_SERIES:
7161 case INVADER_SERIES:
7162 if (megasas_alloc_fusion_context(instance))
7163 return -ENOMEM;
7164 break;
7165 }
7166
7167 return 0;
7168 }
7169
7170 /*
7171 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7172 * producer, consumer buffers for MFI adapters
7173 *
7174 * @instance - Adapter soft instance
7175 *
7176 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7177 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7178 {
7179 kfree(instance->reply_map);
7180 if (instance->adapter_type == MFI_SERIES) {
7181 if (instance->producer)
7182 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7183 instance->producer,
7184 instance->producer_h);
7185 if (instance->consumer)
7186 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7187 instance->consumer,
7188 instance->consumer_h);
7189 } else {
7190 megasas_free_fusion_context(instance);
7191 }
7192 }
7193
7194 /**
7195 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7196 * driver load time
7197 *
7198 * @instance: Adapter soft instance
7199 *
7200 * @return: O for SUCCESS
7201 */
7202 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7203 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7204 {
7205 struct pci_dev *pdev = instance->pdev;
7206 struct fusion_context *fusion = instance->ctrl_context;
7207
7208 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7209 sizeof(struct megasas_evt_detail),
7210 &instance->evt_detail_h, GFP_KERNEL);
7211
7212 if (!instance->evt_detail) {
7213 dev_err(&instance->pdev->dev,
7214 "Failed to allocate event detail buffer\n");
7215 return -ENOMEM;
7216 }
7217
7218 if (fusion) {
7219 fusion->ioc_init_request =
7220 dma_alloc_coherent(&pdev->dev,
7221 sizeof(struct MPI2_IOC_INIT_REQUEST),
7222 &fusion->ioc_init_request_phys,
7223 GFP_KERNEL);
7224
7225 if (!fusion->ioc_init_request) {
7226 dev_err(&pdev->dev,
7227 "Failed to allocate ioc init request\n");
7228 return -ENOMEM;
7229 }
7230
7231 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7232 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7233 &instance->snapdump_prop_h, GFP_KERNEL);
7234
7235 if (!instance->snapdump_prop)
7236 dev_err(&pdev->dev,
7237 "Failed to allocate snapdump properties buffer\n");
7238
7239 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7240 HOST_DEVICE_LIST_SZ,
7241 &instance->host_device_list_buf_h,
7242 GFP_KERNEL);
7243
7244 if (!instance->host_device_list_buf) {
7245 dev_err(&pdev->dev,
7246 "Failed to allocate targetid list buffer\n");
7247 return -ENOMEM;
7248 }
7249
7250 }
7251
7252 instance->pd_list_buf =
7253 dma_alloc_coherent(&pdev->dev,
7254 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7255 &instance->pd_list_buf_h, GFP_KERNEL);
7256
7257 if (!instance->pd_list_buf) {
7258 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7259 return -ENOMEM;
7260 }
7261
7262 instance->ctrl_info_buf =
7263 dma_alloc_coherent(&pdev->dev,
7264 sizeof(struct megasas_ctrl_info),
7265 &instance->ctrl_info_buf_h, GFP_KERNEL);
7266
7267 if (!instance->ctrl_info_buf) {
7268 dev_err(&pdev->dev,
7269 "Failed to allocate controller info buffer\n");
7270 return -ENOMEM;
7271 }
7272
7273 instance->ld_list_buf =
7274 dma_alloc_coherent(&pdev->dev,
7275 sizeof(struct MR_LD_LIST),
7276 &instance->ld_list_buf_h, GFP_KERNEL);
7277
7278 if (!instance->ld_list_buf) {
7279 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7280 return -ENOMEM;
7281 }
7282
7283 instance->ld_targetid_list_buf =
7284 dma_alloc_coherent(&pdev->dev,
7285 sizeof(struct MR_LD_TARGETID_LIST),
7286 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7287
7288 if (!instance->ld_targetid_list_buf) {
7289 dev_err(&pdev->dev,
7290 "Failed to allocate LD targetid list buffer\n");
7291 return -ENOMEM;
7292 }
7293
7294 if (!reset_devices) {
7295 instance->system_info_buf =
7296 dma_alloc_coherent(&pdev->dev,
7297 sizeof(struct MR_DRV_SYSTEM_INFO),
7298 &instance->system_info_h, GFP_KERNEL);
7299 instance->pd_info =
7300 dma_alloc_coherent(&pdev->dev,
7301 sizeof(struct MR_PD_INFO),
7302 &instance->pd_info_h, GFP_KERNEL);
7303 instance->tgt_prop =
7304 dma_alloc_coherent(&pdev->dev,
7305 sizeof(struct MR_TARGET_PROPERTIES),
7306 &instance->tgt_prop_h, GFP_KERNEL);
7307 instance->crash_dump_buf =
7308 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7309 &instance->crash_dump_h, GFP_KERNEL);
7310
7311 if (!instance->system_info_buf)
7312 dev_err(&instance->pdev->dev,
7313 "Failed to allocate system info buffer\n");
7314
7315 if (!instance->pd_info)
7316 dev_err(&instance->pdev->dev,
7317 "Failed to allocate pd_info buffer\n");
7318
7319 if (!instance->tgt_prop)
7320 dev_err(&instance->pdev->dev,
7321 "Failed to allocate tgt_prop buffer\n");
7322
7323 if (!instance->crash_dump_buf)
7324 dev_err(&instance->pdev->dev,
7325 "Failed to allocate crash dump buffer\n");
7326 }
7327
7328 return 0;
7329 }
7330
7331 /*
7332 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7333 * during driver load time
7334 *
7335 * @instance- Adapter soft instance
7336 *
7337 */
7338 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7339 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7340 {
7341 struct pci_dev *pdev = instance->pdev;
7342 struct fusion_context *fusion = instance->ctrl_context;
7343
7344 if (instance->evt_detail)
7345 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7346 instance->evt_detail,
7347 instance->evt_detail_h);
7348
7349 if (fusion && fusion->ioc_init_request)
7350 dma_free_coherent(&pdev->dev,
7351 sizeof(struct MPI2_IOC_INIT_REQUEST),
7352 fusion->ioc_init_request,
7353 fusion->ioc_init_request_phys);
7354
7355 if (instance->pd_list_buf)
7356 dma_free_coherent(&pdev->dev,
7357 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7358 instance->pd_list_buf,
7359 instance->pd_list_buf_h);
7360
7361 if (instance->ld_list_buf)
7362 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7363 instance->ld_list_buf,
7364 instance->ld_list_buf_h);
7365
7366 if (instance->ld_targetid_list_buf)
7367 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7368 instance->ld_targetid_list_buf,
7369 instance->ld_targetid_list_buf_h);
7370
7371 if (instance->ctrl_info_buf)
7372 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7373 instance->ctrl_info_buf,
7374 instance->ctrl_info_buf_h);
7375
7376 if (instance->system_info_buf)
7377 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7378 instance->system_info_buf,
7379 instance->system_info_h);
7380
7381 if (instance->pd_info)
7382 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7383 instance->pd_info, instance->pd_info_h);
7384
7385 if (instance->tgt_prop)
7386 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7387 instance->tgt_prop, instance->tgt_prop_h);
7388
7389 if (instance->crash_dump_buf)
7390 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7391 instance->crash_dump_buf,
7392 instance->crash_dump_h);
7393
7394 if (instance->snapdump_prop)
7395 dma_free_coherent(&pdev->dev,
7396 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7397 instance->snapdump_prop,
7398 instance->snapdump_prop_h);
7399
7400 if (instance->host_device_list_buf)
7401 dma_free_coherent(&pdev->dev,
7402 HOST_DEVICE_LIST_SZ,
7403 instance->host_device_list_buf,
7404 instance->host_device_list_buf_h);
7405
7406 }
7407
7408 /*
7409 * megasas_init_ctrl_params - Initialize controller's instance
7410 * parameters before FW init
7411 * @instance - Adapter soft instance
7412 * @return - void
7413 */
megasas_init_ctrl_params(struct megasas_instance * instance)7414 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7415 {
7416 instance->fw_crash_state = UNAVAILABLE;
7417
7418 megasas_poll_wait_aen = 0;
7419 instance->issuepend_done = 1;
7420 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7421
7422 /*
7423 * Initialize locks and queues
7424 */
7425 INIT_LIST_HEAD(&instance->cmd_pool);
7426 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7427
7428 atomic_set(&instance->fw_outstanding, 0);
7429 atomic64_set(&instance->total_io_count, 0);
7430
7431 init_waitqueue_head(&instance->int_cmd_wait_q);
7432 init_waitqueue_head(&instance->abort_cmd_wait_q);
7433
7434 mutex_init(&instance->crashdump_lock);
7435 spin_lock_init(&instance->mfi_pool_lock);
7436 spin_lock_init(&instance->hba_lock);
7437 spin_lock_init(&instance->stream_lock);
7438 spin_lock_init(&instance->completion_lock);
7439
7440 mutex_init(&instance->reset_mutex);
7441
7442 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7443 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7444 instance->flag_ieee = 1;
7445
7446 instance->flag = 0;
7447 instance->unload = 1;
7448 instance->last_time = 0;
7449 instance->disableOnlineCtrlReset = 1;
7450 instance->UnevenSpanSupport = 0;
7451 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7452 instance->msix_load_balance = false;
7453
7454 if (instance->adapter_type != MFI_SERIES)
7455 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7456 else
7457 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7458 }
7459
7460 /**
7461 * megasas_probe_one - PCI hotplug entry point
7462 * @pdev: PCI device structure
7463 * @id: PCI ids of supported hotplugged adapter
7464 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7465 static int megasas_probe_one(struct pci_dev *pdev,
7466 const struct pci_device_id *id)
7467 {
7468 int rval, pos;
7469 struct Scsi_Host *host;
7470 struct megasas_instance *instance;
7471 u16 control = 0;
7472
7473 switch (pdev->device) {
7474 case PCI_DEVICE_ID_LSI_AERO_10E0:
7475 case PCI_DEVICE_ID_LSI_AERO_10E3:
7476 case PCI_DEVICE_ID_LSI_AERO_10E4:
7477 case PCI_DEVICE_ID_LSI_AERO_10E7:
7478 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7479 return 1;
7480 case PCI_DEVICE_ID_LSI_AERO_10E1:
7481 case PCI_DEVICE_ID_LSI_AERO_10E5:
7482 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7483 break;
7484 }
7485
7486 /* Reset MSI-X in the kdump kernel */
7487 if (reset_devices) {
7488 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7489 if (pos) {
7490 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7491 &control);
7492 if (control & PCI_MSIX_FLAGS_ENABLE) {
7493 dev_info(&pdev->dev, "resetting MSI-X\n");
7494 pci_write_config_word(pdev,
7495 pos + PCI_MSIX_FLAGS,
7496 control &
7497 ~PCI_MSIX_FLAGS_ENABLE);
7498 }
7499 }
7500 }
7501
7502 /*
7503 * PCI prepping: enable device set bus mastering and dma mask
7504 */
7505 rval = pci_enable_device_mem(pdev);
7506
7507 if (rval) {
7508 return rval;
7509 }
7510
7511 pci_set_master(pdev);
7512
7513 host = scsi_host_alloc(&megasas_template,
7514 sizeof(struct megasas_instance));
7515
7516 if (!host) {
7517 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7518 goto fail_alloc_instance;
7519 }
7520
7521 instance = (struct megasas_instance *)host->hostdata;
7522 memset(instance, 0, sizeof(*instance));
7523 atomic_set(&instance->fw_reset_no_pci_access, 0);
7524
7525 /*
7526 * Initialize PCI related and misc parameters
7527 */
7528 instance->pdev = pdev;
7529 instance->host = host;
7530 instance->unique_id = pci_dev_id(pdev);
7531 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7532
7533 megasas_set_adapter_type(instance);
7534
7535 /*
7536 * Initialize MFI Firmware
7537 */
7538 if (megasas_init_fw(instance))
7539 goto fail_init_mfi;
7540
7541 if (instance->requestorId) {
7542 if (instance->PlasmaFW111) {
7543 instance->vf_affiliation_111 =
7544 dma_alloc_coherent(&pdev->dev,
7545 sizeof(struct MR_LD_VF_AFFILIATION_111),
7546 &instance->vf_affiliation_111_h,
7547 GFP_KERNEL);
7548 if (!instance->vf_affiliation_111)
7549 dev_warn(&pdev->dev, "Can't allocate "
7550 "memory for VF affiliation buffer\n");
7551 } else {
7552 instance->vf_affiliation =
7553 dma_alloc_coherent(&pdev->dev,
7554 (MAX_LOGICAL_DRIVES + 1) *
7555 sizeof(struct MR_LD_VF_AFFILIATION),
7556 &instance->vf_affiliation_h,
7557 GFP_KERNEL);
7558 if (!instance->vf_affiliation)
7559 dev_warn(&pdev->dev, "Can't allocate "
7560 "memory for VF affiliation buffer\n");
7561 }
7562 }
7563
7564 /*
7565 * Store instance in PCI softstate
7566 */
7567 pci_set_drvdata(pdev, instance);
7568
7569 /*
7570 * Add this controller to megasas_mgmt_info structure so that it
7571 * can be exported to management applications
7572 */
7573 megasas_mgmt_info.count++;
7574 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7575 megasas_mgmt_info.max_index++;
7576
7577 /*
7578 * Register with SCSI mid-layer
7579 */
7580 if (megasas_io_attach(instance))
7581 goto fail_io_attach;
7582
7583 instance->unload = 0;
7584 /*
7585 * Trigger SCSI to scan our drives
7586 */
7587 if (!instance->enable_fw_dev_list ||
7588 (instance->host_device_list_buf->count > 0))
7589 scsi_scan_host(host);
7590
7591 /*
7592 * Initiate AEN (Asynchronous Event Notification)
7593 */
7594 if (megasas_start_aen(instance)) {
7595 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7596 goto fail_start_aen;
7597 }
7598
7599 megasas_setup_debugfs(instance);
7600
7601 /* Get current SR-IOV LD/VF affiliation */
7602 if (instance->requestorId)
7603 megasas_get_ld_vf_affiliation(instance, 1);
7604
7605 return 0;
7606
7607 fail_start_aen:
7608 instance->unload = 1;
7609 scsi_remove_host(instance->host);
7610 fail_io_attach:
7611 megasas_mgmt_info.count--;
7612 megasas_mgmt_info.max_index--;
7613 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7614
7615 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7616 del_timer_sync(&instance->sriov_heartbeat_timer);
7617
7618 instance->instancet->disable_intr(instance);
7619 megasas_destroy_irqs(instance);
7620
7621 if (instance->adapter_type != MFI_SERIES)
7622 megasas_release_fusion(instance);
7623 else
7624 megasas_release_mfi(instance);
7625
7626 if (instance->msix_vectors)
7627 pci_free_irq_vectors(instance->pdev);
7628 instance->msix_vectors = 0;
7629
7630 if (instance->fw_crash_state != UNAVAILABLE)
7631 megasas_free_host_crash_buffer(instance);
7632
7633 if (instance->adapter_type != MFI_SERIES)
7634 megasas_fusion_stop_watchdog(instance);
7635 fail_init_mfi:
7636 scsi_host_put(host);
7637 fail_alloc_instance:
7638 pci_disable_device(pdev);
7639
7640 return -ENODEV;
7641 }
7642
7643 /**
7644 * megasas_flush_cache - Requests FW to flush all its caches
7645 * @instance: Adapter soft state
7646 */
megasas_flush_cache(struct megasas_instance * instance)7647 static void megasas_flush_cache(struct megasas_instance *instance)
7648 {
7649 struct megasas_cmd *cmd;
7650 struct megasas_dcmd_frame *dcmd;
7651
7652 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7653 return;
7654
7655 cmd = megasas_get_cmd(instance);
7656
7657 if (!cmd)
7658 return;
7659
7660 dcmd = &cmd->frame->dcmd;
7661
7662 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7663
7664 dcmd->cmd = MFI_CMD_DCMD;
7665 dcmd->cmd_status = 0x0;
7666 dcmd->sge_count = 0;
7667 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7668 dcmd->timeout = 0;
7669 dcmd->pad_0 = 0;
7670 dcmd->data_xfer_len = 0;
7671 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7672 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7673
7674 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7675 != DCMD_SUCCESS) {
7676 dev_err(&instance->pdev->dev,
7677 "return from %s %d\n", __func__, __LINE__);
7678 return;
7679 }
7680
7681 megasas_return_cmd(instance, cmd);
7682 }
7683
7684 /**
7685 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7686 * @instance: Adapter soft state
7687 * @opcode: Shutdown/Hibernate
7688 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7689 static void megasas_shutdown_controller(struct megasas_instance *instance,
7690 u32 opcode)
7691 {
7692 struct megasas_cmd *cmd;
7693 struct megasas_dcmd_frame *dcmd;
7694
7695 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7696 return;
7697
7698 cmd = megasas_get_cmd(instance);
7699
7700 if (!cmd)
7701 return;
7702
7703 if (instance->aen_cmd)
7704 megasas_issue_blocked_abort_cmd(instance,
7705 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7706 if (instance->map_update_cmd)
7707 megasas_issue_blocked_abort_cmd(instance,
7708 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7709 if (instance->jbod_seq_cmd)
7710 megasas_issue_blocked_abort_cmd(instance,
7711 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7712
7713 dcmd = &cmd->frame->dcmd;
7714
7715 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7716
7717 dcmd->cmd = MFI_CMD_DCMD;
7718 dcmd->cmd_status = 0x0;
7719 dcmd->sge_count = 0;
7720 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7721 dcmd->timeout = 0;
7722 dcmd->pad_0 = 0;
7723 dcmd->data_xfer_len = 0;
7724 dcmd->opcode = cpu_to_le32(opcode);
7725
7726 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7727 != DCMD_SUCCESS) {
7728 dev_err(&instance->pdev->dev,
7729 "return from %s %d\n", __func__, __LINE__);
7730 return;
7731 }
7732
7733 megasas_return_cmd(instance, cmd);
7734 }
7735
7736 /**
7737 * megasas_suspend - driver suspend entry point
7738 * @dev: Device structure
7739 */
7740 static int __maybe_unused
megasas_suspend(struct device * dev)7741 megasas_suspend(struct device *dev)
7742 {
7743 struct megasas_instance *instance;
7744
7745 instance = dev_get_drvdata(dev);
7746
7747 if (!instance)
7748 return 0;
7749
7750 instance->unload = 1;
7751
7752 dev_info(dev, "%s is called\n", __func__);
7753
7754 /* Shutdown SR-IOV heartbeat timer */
7755 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7756 del_timer_sync(&instance->sriov_heartbeat_timer);
7757
7758 /* Stop the FW fault detection watchdog */
7759 if (instance->adapter_type != MFI_SERIES)
7760 megasas_fusion_stop_watchdog(instance);
7761
7762 megasas_flush_cache(instance);
7763 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7764
7765 /* cancel the delayed work if this work still in queue */
7766 if (instance->ev != NULL) {
7767 struct megasas_aen_event *ev = instance->ev;
7768 cancel_delayed_work_sync(&ev->hotplug_work);
7769 instance->ev = NULL;
7770 }
7771
7772 tasklet_kill(&instance->isr_tasklet);
7773
7774 pci_set_drvdata(instance->pdev, instance);
7775 instance->instancet->disable_intr(instance);
7776
7777 megasas_destroy_irqs(instance);
7778
7779 if (instance->msix_vectors)
7780 pci_free_irq_vectors(instance->pdev);
7781
7782 return 0;
7783 }
7784
7785 /**
7786 * megasas_resume- driver resume entry point
7787 * @dev: Device structure
7788 */
7789 static int __maybe_unused
megasas_resume(struct device * dev)7790 megasas_resume(struct device *dev)
7791 {
7792 int rval;
7793 struct Scsi_Host *host;
7794 struct megasas_instance *instance;
7795 u32 status_reg;
7796
7797 instance = dev_get_drvdata(dev);
7798
7799 if (!instance)
7800 return 0;
7801
7802 host = instance->host;
7803
7804 dev_info(dev, "%s is called\n", __func__);
7805
7806 /*
7807 * We expect the FW state to be READY
7808 */
7809
7810 if (megasas_transition_to_ready(instance, 0)) {
7811 dev_info(&instance->pdev->dev,
7812 "Failed to transition controller to ready from %s!\n",
7813 __func__);
7814 if (instance->adapter_type != MFI_SERIES) {
7815 status_reg =
7816 instance->instancet->read_fw_status_reg(instance);
7817 if (!(status_reg & MFI_RESET_ADAPTER) ||
7818 ((megasas_adp_reset_wait_for_ready
7819 (instance, true, 0)) == FAILED))
7820 goto fail_ready_state;
7821 } else {
7822 atomic_set(&instance->fw_reset_no_pci_access, 1);
7823 instance->instancet->adp_reset
7824 (instance, instance->reg_set);
7825 atomic_set(&instance->fw_reset_no_pci_access, 0);
7826
7827 /* waiting for about 30 seconds before retry */
7828 ssleep(30);
7829
7830 if (megasas_transition_to_ready(instance, 0))
7831 goto fail_ready_state;
7832 }
7833
7834 dev_info(&instance->pdev->dev,
7835 "FW restarted successfully from %s!\n",
7836 __func__);
7837 }
7838 if (megasas_set_dma_mask(instance))
7839 goto fail_set_dma_mask;
7840
7841 /*
7842 * Initialize MFI Firmware
7843 */
7844
7845 atomic_set(&instance->fw_outstanding, 0);
7846 atomic_set(&instance->ldio_outstanding, 0);
7847
7848 /* Now re-enable MSI-X */
7849 if (instance->msix_vectors)
7850 megasas_alloc_irq_vectors(instance);
7851
7852 if (!instance->msix_vectors) {
7853 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7854 PCI_IRQ_INTX);
7855 if (rval < 0)
7856 goto fail_reenable_msix;
7857 }
7858
7859 megasas_setup_reply_map(instance);
7860
7861 if (instance->adapter_type != MFI_SERIES) {
7862 megasas_reset_reply_desc(instance);
7863 if (megasas_ioc_init_fusion(instance)) {
7864 megasas_free_cmds(instance);
7865 megasas_free_cmds_fusion(instance);
7866 goto fail_init_mfi;
7867 }
7868 if (!megasas_get_map_info(instance))
7869 megasas_sync_map_info(instance);
7870 } else {
7871 *instance->producer = 0;
7872 *instance->consumer = 0;
7873 if (megasas_issue_init_mfi(instance))
7874 goto fail_init_mfi;
7875 }
7876
7877 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7878 goto fail_init_mfi;
7879
7880 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7881 (unsigned long)instance);
7882
7883 if (instance->msix_vectors ?
7884 megasas_setup_irqs_msix(instance, 0) :
7885 megasas_setup_irqs_ioapic(instance))
7886 goto fail_init_mfi;
7887
7888 if (instance->adapter_type != MFI_SERIES)
7889 megasas_setup_irq_poll(instance);
7890
7891 /* Re-launch SR-IOV heartbeat timer */
7892 if (instance->requestorId) {
7893 if (!megasas_sriov_start_heartbeat(instance, 0))
7894 megasas_start_timer(instance);
7895 else {
7896 instance->skip_heartbeat_timer_del = 1;
7897 goto fail_init_mfi;
7898 }
7899 }
7900
7901 instance->instancet->enable_intr(instance);
7902 megasas_setup_jbod_map(instance);
7903 instance->unload = 0;
7904
7905 /*
7906 * Initiate AEN (Asynchronous Event Notification)
7907 */
7908 if (megasas_start_aen(instance))
7909 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7910
7911 /* Re-launch FW fault watchdog */
7912 if (instance->adapter_type != MFI_SERIES)
7913 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7914 goto fail_start_watchdog;
7915
7916 return 0;
7917
7918 fail_start_watchdog:
7919 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7920 del_timer_sync(&instance->sriov_heartbeat_timer);
7921 fail_init_mfi:
7922 megasas_free_ctrl_dma_buffers(instance);
7923 megasas_free_ctrl_mem(instance);
7924 scsi_host_put(host);
7925
7926 fail_reenable_msix:
7927 fail_set_dma_mask:
7928 fail_ready_state:
7929
7930 return -ENODEV;
7931 }
7932
7933 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7934 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7935 {
7936 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7937 int i;
7938 u8 adp_state;
7939
7940 for (i = 0; i < wait_time; i++) {
7941 adp_state = atomic_read(&instance->adprecovery);
7942 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7943 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7944 break;
7945
7946 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7947 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7948
7949 msleep(1000);
7950 }
7951
7952 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7953 dev_info(&instance->pdev->dev,
7954 "%s HBA failed to become operational, adp_state %d\n",
7955 __func__, adp_state);
7956 return 1;
7957 }
7958
7959 return 0;
7960 }
7961
7962 /**
7963 * megasas_detach_one - PCI hot"un"plug entry point
7964 * @pdev: PCI device structure
7965 */
megasas_detach_one(struct pci_dev * pdev)7966 static void megasas_detach_one(struct pci_dev *pdev)
7967 {
7968 int i;
7969 struct Scsi_Host *host;
7970 struct megasas_instance *instance;
7971 struct fusion_context *fusion;
7972 size_t pd_seq_map_sz;
7973
7974 instance = pci_get_drvdata(pdev);
7975
7976 if (!instance)
7977 return;
7978
7979 host = instance->host;
7980 fusion = instance->ctrl_context;
7981
7982 /* Shutdown SR-IOV heartbeat timer */
7983 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7984 del_timer_sync(&instance->sriov_heartbeat_timer);
7985
7986 /* Stop the FW fault detection watchdog */
7987 if (instance->adapter_type != MFI_SERIES)
7988 megasas_fusion_stop_watchdog(instance);
7989
7990 if (instance->fw_crash_state != UNAVAILABLE)
7991 megasas_free_host_crash_buffer(instance);
7992 scsi_remove_host(instance->host);
7993 instance->unload = 1;
7994
7995 if (megasas_wait_for_adapter_operational(instance))
7996 goto skip_firing_dcmds;
7997
7998 megasas_flush_cache(instance);
7999 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8000
8001 skip_firing_dcmds:
8002 /* cancel the delayed work if this work still in queue*/
8003 if (instance->ev != NULL) {
8004 struct megasas_aen_event *ev = instance->ev;
8005 cancel_delayed_work_sync(&ev->hotplug_work);
8006 instance->ev = NULL;
8007 }
8008
8009 /* cancel all wait events */
8010 wake_up_all(&instance->int_cmd_wait_q);
8011
8012 tasklet_kill(&instance->isr_tasklet);
8013
8014 /*
8015 * Take the instance off the instance array. Note that we will not
8016 * decrement the max_index. We let this array be sparse array
8017 */
8018 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8019 if (megasas_mgmt_info.instance[i] == instance) {
8020 megasas_mgmt_info.count--;
8021 megasas_mgmt_info.instance[i] = NULL;
8022
8023 break;
8024 }
8025 }
8026
8027 instance->instancet->disable_intr(instance);
8028
8029 megasas_destroy_irqs(instance);
8030
8031 if (instance->msix_vectors)
8032 pci_free_irq_vectors(instance->pdev);
8033
8034 if (instance->adapter_type >= VENTURA_SERIES) {
8035 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8036 kfree(fusion->stream_detect_by_ld[i]);
8037 kfree(fusion->stream_detect_by_ld);
8038 fusion->stream_detect_by_ld = NULL;
8039 }
8040
8041
8042 if (instance->adapter_type != MFI_SERIES) {
8043 megasas_release_fusion(instance);
8044 pd_seq_map_sz =
8045 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8046 seq, MAX_PHYSICAL_DEVICES);
8047 for (i = 0; i < 2 ; i++) {
8048 if (fusion->ld_map[i])
8049 dma_free_coherent(&instance->pdev->dev,
8050 fusion->max_map_sz,
8051 fusion->ld_map[i],
8052 fusion->ld_map_phys[i]);
8053 if (fusion->ld_drv_map[i]) {
8054 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8055 vfree(fusion->ld_drv_map[i]);
8056 else
8057 free_pages((ulong)fusion->ld_drv_map[i],
8058 fusion->drv_map_pages);
8059 }
8060
8061 if (fusion->pd_seq_sync[i])
8062 dma_free_coherent(&instance->pdev->dev,
8063 pd_seq_map_sz,
8064 fusion->pd_seq_sync[i],
8065 fusion->pd_seq_phys[i]);
8066 }
8067 } else {
8068 megasas_release_mfi(instance);
8069 }
8070
8071 if (instance->vf_affiliation)
8072 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8073 sizeof(struct MR_LD_VF_AFFILIATION),
8074 instance->vf_affiliation,
8075 instance->vf_affiliation_h);
8076
8077 if (instance->vf_affiliation_111)
8078 dma_free_coherent(&pdev->dev,
8079 sizeof(struct MR_LD_VF_AFFILIATION_111),
8080 instance->vf_affiliation_111,
8081 instance->vf_affiliation_111_h);
8082
8083 if (instance->hb_host_mem)
8084 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8085 instance->hb_host_mem,
8086 instance->hb_host_mem_h);
8087
8088 megasas_free_ctrl_dma_buffers(instance);
8089
8090 megasas_free_ctrl_mem(instance);
8091
8092 megasas_destroy_debugfs(instance);
8093
8094 scsi_host_put(host);
8095
8096 pci_disable_device(pdev);
8097 }
8098
8099 /**
8100 * megasas_shutdown - Shutdown entry point
8101 * @pdev: PCI device structure
8102 */
megasas_shutdown(struct pci_dev * pdev)8103 static void megasas_shutdown(struct pci_dev *pdev)
8104 {
8105 struct megasas_instance *instance = pci_get_drvdata(pdev);
8106
8107 if (!instance)
8108 return;
8109
8110 instance->unload = 1;
8111
8112 if (megasas_wait_for_adapter_operational(instance))
8113 goto skip_firing_dcmds;
8114
8115 megasas_flush_cache(instance);
8116 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8117
8118 skip_firing_dcmds:
8119 instance->instancet->disable_intr(instance);
8120 megasas_destroy_irqs(instance);
8121
8122 if (instance->msix_vectors)
8123 pci_free_irq_vectors(instance->pdev);
8124 }
8125
8126 /*
8127 * megasas_mgmt_open - char node "open" entry point
8128 * @inode: char node inode
8129 * @filep: char node file
8130 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8131 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8132 {
8133 /*
8134 * Allow only those users with admin rights
8135 */
8136 if (!capable(CAP_SYS_ADMIN))
8137 return -EACCES;
8138
8139 return 0;
8140 }
8141
8142 /*
8143 * megasas_mgmt_fasync - Async notifier registration from applications
8144 * @fd: char node file descriptor number
8145 * @filep: char node file
8146 * @mode: notifier on/off
8147 *
8148 * This function adds the calling process to a driver global queue. When an
8149 * event occurs, SIGIO will be sent to all processes in this queue.
8150 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8151 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8152 {
8153 int rc;
8154
8155 mutex_lock(&megasas_async_queue_mutex);
8156
8157 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8158
8159 mutex_unlock(&megasas_async_queue_mutex);
8160
8161 if (rc >= 0) {
8162 /* For sanity check when we get ioctl */
8163 filep->private_data = filep;
8164 return 0;
8165 }
8166
8167 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8168
8169 return rc;
8170 }
8171
8172 /*
8173 * megasas_mgmt_poll - char node "poll" entry point
8174 * @filep: char node file
8175 * @wait: Events to poll for
8176 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8177 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8178 {
8179 __poll_t mask;
8180 unsigned long flags;
8181
8182 poll_wait(file, &megasas_poll_wait, wait);
8183 spin_lock_irqsave(&poll_aen_lock, flags);
8184 if (megasas_poll_wait_aen)
8185 mask = (EPOLLIN | EPOLLRDNORM);
8186 else
8187 mask = 0;
8188 megasas_poll_wait_aen = 0;
8189 spin_unlock_irqrestore(&poll_aen_lock, flags);
8190 return mask;
8191 }
8192
8193 /*
8194 * megasas_set_crash_dump_params_ioctl:
8195 * Send CRASH_DUMP_MODE DCMD to all controllers
8196 * @cmd: MFI command frame
8197 */
8198
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8199 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8200 {
8201 struct megasas_instance *local_instance;
8202 int i, error = 0;
8203 int crash_support;
8204
8205 crash_support = cmd->frame->dcmd.mbox.w[0];
8206
8207 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8208 local_instance = megasas_mgmt_info.instance[i];
8209 if (local_instance && local_instance->crash_dump_drv_support) {
8210 if ((atomic_read(&local_instance->adprecovery) ==
8211 MEGASAS_HBA_OPERATIONAL) &&
8212 !megasas_set_crash_dump_params(local_instance,
8213 crash_support)) {
8214 local_instance->crash_dump_app_support =
8215 crash_support;
8216 dev_info(&local_instance->pdev->dev,
8217 "Application firmware crash "
8218 "dump mode set success\n");
8219 error = 0;
8220 } else {
8221 dev_info(&local_instance->pdev->dev,
8222 "Application firmware crash "
8223 "dump mode set failed\n");
8224 error = -1;
8225 }
8226 }
8227 }
8228 return error;
8229 }
8230
8231 /**
8232 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8233 * @instance: Adapter soft state
8234 * @user_ioc: User's ioctl packet
8235 * @ioc: ioctl packet
8236 */
8237 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8238 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8239 struct megasas_iocpacket __user * user_ioc,
8240 struct megasas_iocpacket *ioc)
8241 {
8242 struct megasas_sge64 *kern_sge64 = NULL;
8243 struct megasas_sge32 *kern_sge32 = NULL;
8244 struct megasas_cmd *cmd;
8245 void *kbuff_arr[MAX_IOCTL_SGE];
8246 dma_addr_t buf_handle = 0;
8247 int error = 0, i;
8248 void *sense = NULL;
8249 dma_addr_t sense_handle;
8250 void *sense_ptr;
8251 u32 opcode = 0;
8252 int ret = DCMD_SUCCESS;
8253
8254 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8255
8256 if (ioc->sge_count > MAX_IOCTL_SGE) {
8257 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8258 ioc->sge_count, MAX_IOCTL_SGE);
8259 return -EINVAL;
8260 }
8261
8262 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8263 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8264 !instance->support_nvme_passthru) ||
8265 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8266 !instance->support_pci_lane_margining)) {
8267 dev_err(&instance->pdev->dev,
8268 "Received invalid ioctl command 0x%x\n",
8269 ioc->frame.hdr.cmd);
8270 return -ENOTSUPP;
8271 }
8272
8273 cmd = megasas_get_cmd(instance);
8274 if (!cmd) {
8275 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8276 return -ENOMEM;
8277 }
8278
8279 /*
8280 * User's IOCTL packet has 2 frames (maximum). Copy those two
8281 * frames into our cmd's frames. cmd->frame's context will get
8282 * overwritten when we copy from user's frames. So set that value
8283 * alone separately
8284 */
8285 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8286 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8287 cmd->frame->hdr.pad_0 = 0;
8288
8289 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8290
8291 if (instance->consistent_mask_64bit)
8292 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8293 MFI_FRAME_SENSE64));
8294 else
8295 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8296 MFI_FRAME_SENSE64));
8297
8298 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8299 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8300
8301 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8302 mutex_lock(&instance->reset_mutex);
8303 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8304 megasas_return_cmd(instance, cmd);
8305 mutex_unlock(&instance->reset_mutex);
8306 return -1;
8307 }
8308 mutex_unlock(&instance->reset_mutex);
8309 }
8310
8311 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8312 error = megasas_set_crash_dump_params_ioctl(cmd);
8313 megasas_return_cmd(instance, cmd);
8314 return error;
8315 }
8316
8317 /*
8318 * The management interface between applications and the fw uses
8319 * MFI frames. E.g, RAID configuration changes, LD property changes
8320 * etc are accomplishes through different kinds of MFI frames. The
8321 * driver needs to care only about substituting user buffers with
8322 * kernel buffers in SGLs. The location of SGL is embedded in the
8323 * struct iocpacket itself.
8324 */
8325 if (instance->consistent_mask_64bit)
8326 kern_sge64 = (struct megasas_sge64 *)
8327 ((unsigned long)cmd->frame + ioc->sgl_off);
8328 else
8329 kern_sge32 = (struct megasas_sge32 *)
8330 ((unsigned long)cmd->frame + ioc->sgl_off);
8331
8332 /*
8333 * For each user buffer, create a mirror buffer and copy in
8334 */
8335 for (i = 0; i < ioc->sge_count; i++) {
8336 if (!ioc->sgl[i].iov_len)
8337 continue;
8338
8339 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8340 ioc->sgl[i].iov_len,
8341 &buf_handle, GFP_KERNEL);
8342 if (!kbuff_arr[i]) {
8343 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8344 "kernel SGL buffer for IOCTL\n");
8345 error = -ENOMEM;
8346 goto out;
8347 }
8348
8349 /*
8350 * We don't change the dma_coherent_mask, so
8351 * dma_alloc_coherent only returns 32bit addresses
8352 */
8353 if (instance->consistent_mask_64bit) {
8354 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8355 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8356 } else {
8357 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8358 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8359 }
8360
8361 /*
8362 * We created a kernel buffer corresponding to the
8363 * user buffer. Now copy in from the user buffer
8364 */
8365 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8366 (u32) (ioc->sgl[i].iov_len))) {
8367 error = -EFAULT;
8368 goto out;
8369 }
8370 }
8371
8372 if (ioc->sense_len) {
8373 /* make sure the pointer is part of the frame */
8374 if (ioc->sense_off >
8375 (sizeof(union megasas_frame) - sizeof(__le64))) {
8376 error = -EINVAL;
8377 goto out;
8378 }
8379
8380 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8381 &sense_handle, GFP_KERNEL);
8382 if (!sense) {
8383 error = -ENOMEM;
8384 goto out;
8385 }
8386
8387 /* always store 64 bits regardless of addressing */
8388 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8389 put_unaligned_le64(sense_handle, sense_ptr);
8390 }
8391
8392 /*
8393 * Set the sync_cmd flag so that the ISR knows not to complete this
8394 * cmd to the SCSI mid-layer
8395 */
8396 cmd->sync_cmd = 1;
8397
8398 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8399 switch (ret) {
8400 case DCMD_INIT:
8401 case DCMD_BUSY:
8402 cmd->sync_cmd = 0;
8403 dev_err(&instance->pdev->dev,
8404 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8405 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8406 cmd->cmd_status_drv);
8407 error = -EBUSY;
8408 goto out;
8409 }
8410
8411 cmd->sync_cmd = 0;
8412
8413 if (instance->unload == 1) {
8414 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8415 "don't submit data to application\n");
8416 goto out;
8417 }
8418 /*
8419 * copy out the kernel buffers to user buffers
8420 */
8421 for (i = 0; i < ioc->sge_count; i++) {
8422 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8423 ioc->sgl[i].iov_len)) {
8424 error = -EFAULT;
8425 goto out;
8426 }
8427 }
8428
8429 /*
8430 * copy out the sense
8431 */
8432 if (ioc->sense_len) {
8433 void __user *uptr;
8434 /*
8435 * sense_ptr points to the location that has the user
8436 * sense buffer address
8437 */
8438 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8439 if (in_compat_syscall())
8440 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8441 sense_ptr));
8442 else
8443 uptr = get_unaligned((void __user **)sense_ptr);
8444
8445 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8446 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8447 "sense data\n");
8448 error = -EFAULT;
8449 goto out;
8450 }
8451 }
8452
8453 /*
8454 * copy the status codes returned by the fw
8455 */
8456 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8457 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8458 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8459 error = -EFAULT;
8460 }
8461
8462 out:
8463 if (sense) {
8464 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8465 sense, sense_handle);
8466 }
8467
8468 for (i = 0; i < ioc->sge_count; i++) {
8469 if (kbuff_arr[i]) {
8470 if (instance->consistent_mask_64bit)
8471 dma_free_coherent(&instance->pdev->dev,
8472 le32_to_cpu(kern_sge64[i].length),
8473 kbuff_arr[i],
8474 le64_to_cpu(kern_sge64[i].phys_addr));
8475 else
8476 dma_free_coherent(&instance->pdev->dev,
8477 le32_to_cpu(kern_sge32[i].length),
8478 kbuff_arr[i],
8479 le32_to_cpu(kern_sge32[i].phys_addr));
8480 kbuff_arr[i] = NULL;
8481 }
8482 }
8483
8484 megasas_return_cmd(instance, cmd);
8485 return error;
8486 }
8487
8488 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8489 megasas_compat_iocpacket_get_user(void __user *arg)
8490 {
8491 struct megasas_iocpacket *ioc;
8492 struct compat_megasas_iocpacket __user *cioc = arg;
8493 size_t size;
8494 int err = -EFAULT;
8495 int i;
8496
8497 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8498 if (!ioc)
8499 return ERR_PTR(-ENOMEM);
8500 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8501 if (copy_from_user(ioc, arg, size))
8502 goto out;
8503
8504 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8505 compat_uptr_t iov_base;
8506
8507 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8508 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8509 goto out;
8510
8511 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8512 }
8513
8514 return ioc;
8515 out:
8516 kfree(ioc);
8517 return ERR_PTR(err);
8518 }
8519
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8520 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8521 {
8522 struct megasas_iocpacket __user *user_ioc =
8523 (struct megasas_iocpacket __user *)arg;
8524 struct megasas_iocpacket *ioc;
8525 struct megasas_instance *instance;
8526 int error;
8527
8528 if (in_compat_syscall())
8529 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8530 else
8531 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8532
8533 if (IS_ERR(ioc))
8534 return PTR_ERR(ioc);
8535
8536 instance = megasas_lookup_instance(ioc->host_no);
8537 if (!instance) {
8538 error = -ENODEV;
8539 goto out_kfree_ioc;
8540 }
8541
8542 /* Block ioctls in VF mode */
8543 if (instance->requestorId && !allow_vf_ioctls) {
8544 error = -ENODEV;
8545 goto out_kfree_ioc;
8546 }
8547
8548 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8549 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8550 error = -ENODEV;
8551 goto out_kfree_ioc;
8552 }
8553
8554 if (instance->unload == 1) {
8555 error = -ENODEV;
8556 goto out_kfree_ioc;
8557 }
8558
8559 if (down_interruptible(&instance->ioctl_sem)) {
8560 error = -ERESTARTSYS;
8561 goto out_kfree_ioc;
8562 }
8563
8564 if (megasas_wait_for_adapter_operational(instance)) {
8565 error = -ENODEV;
8566 goto out_up;
8567 }
8568
8569 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8570 out_up:
8571 up(&instance->ioctl_sem);
8572
8573 out_kfree_ioc:
8574 kfree(ioc);
8575 return error;
8576 }
8577
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8578 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8579 {
8580 struct megasas_instance *instance;
8581 struct megasas_aen aen;
8582 int error;
8583
8584 if (file->private_data != file) {
8585 printk(KERN_DEBUG "megasas: fasync_helper was not "
8586 "called first\n");
8587 return -EINVAL;
8588 }
8589
8590 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8591 return -EFAULT;
8592
8593 instance = megasas_lookup_instance(aen.host_no);
8594
8595 if (!instance)
8596 return -ENODEV;
8597
8598 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8599 return -ENODEV;
8600 }
8601
8602 if (instance->unload == 1) {
8603 return -ENODEV;
8604 }
8605
8606 if (megasas_wait_for_adapter_operational(instance))
8607 return -ENODEV;
8608
8609 mutex_lock(&instance->reset_mutex);
8610 error = megasas_register_aen(instance, aen.seq_num,
8611 aen.class_locale_word);
8612 mutex_unlock(&instance->reset_mutex);
8613 return error;
8614 }
8615
8616 /**
8617 * megasas_mgmt_ioctl - char node ioctl entry point
8618 * @file: char device file pointer
8619 * @cmd: ioctl command
8620 * @arg: ioctl command arguments address
8621 */
8622 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8623 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8624 {
8625 switch (cmd) {
8626 case MEGASAS_IOC_FIRMWARE:
8627 return megasas_mgmt_ioctl_fw(file, arg);
8628
8629 case MEGASAS_IOC_GET_AEN:
8630 return megasas_mgmt_ioctl_aen(file, arg);
8631 }
8632
8633 return -ENOTTY;
8634 }
8635
8636 #ifdef CONFIG_COMPAT
8637 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8638 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8639 unsigned long arg)
8640 {
8641 switch (cmd) {
8642 case MEGASAS_IOC_FIRMWARE32:
8643 return megasas_mgmt_ioctl_fw(file, arg);
8644 case MEGASAS_IOC_GET_AEN:
8645 return megasas_mgmt_ioctl_aen(file, arg);
8646 }
8647
8648 return -ENOTTY;
8649 }
8650 #endif
8651
8652 /*
8653 * File operations structure for management interface
8654 */
8655 static const struct file_operations megasas_mgmt_fops = {
8656 .owner = THIS_MODULE,
8657 .open = megasas_mgmt_open,
8658 .fasync = megasas_mgmt_fasync,
8659 .unlocked_ioctl = megasas_mgmt_ioctl,
8660 .poll = megasas_mgmt_poll,
8661 #ifdef CONFIG_COMPAT
8662 .compat_ioctl = megasas_mgmt_compat_ioctl,
8663 #endif
8664 .llseek = noop_llseek,
8665 };
8666
8667 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8668
8669 /*
8670 * PCI hotplug support registration structure
8671 */
8672 static struct pci_driver megasas_pci_driver = {
8673
8674 .name = "megaraid_sas",
8675 .id_table = megasas_pci_table,
8676 .probe = megasas_probe_one,
8677 .remove = megasas_detach_one,
8678 .driver.pm = &megasas_pm_ops,
8679 .shutdown = megasas_shutdown,
8680 };
8681
8682 /*
8683 * Sysfs driver attributes
8684 */
version_show(struct device_driver * dd,char * buf)8685 static ssize_t version_show(struct device_driver *dd, char *buf)
8686 {
8687 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8688 MEGASAS_VERSION);
8689 }
8690 static DRIVER_ATTR_RO(version);
8691
release_date_show(struct device_driver * dd,char * buf)8692 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8693 {
8694 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8695 MEGASAS_RELDATE);
8696 }
8697 static DRIVER_ATTR_RO(release_date);
8698
support_poll_for_event_show(struct device_driver * dd,char * buf)8699 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8700 {
8701 return sprintf(buf, "%u\n", support_poll_for_event);
8702 }
8703 static DRIVER_ATTR_RO(support_poll_for_event);
8704
support_device_change_show(struct device_driver * dd,char * buf)8705 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8706 {
8707 return sprintf(buf, "%u\n", support_device_change);
8708 }
8709 static DRIVER_ATTR_RO(support_device_change);
8710
dbg_lvl_show(struct device_driver * dd,char * buf)8711 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8712 {
8713 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8714 }
8715
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8716 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8717 size_t count)
8718 {
8719 int retval = count;
8720
8721 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8722 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8723 retval = -EINVAL;
8724 }
8725 return retval;
8726 }
8727 static DRIVER_ATTR_RW(dbg_lvl);
8728
8729 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8730 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8731 {
8732 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8733 }
8734
8735 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8736
8737 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8738 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8739 {
8740 return sprintf(buf, "%u\n", support_pci_lane_margining);
8741 }
8742
8743 static DRIVER_ATTR_RO(support_pci_lane_margining);
8744
megasas_remove_scsi_device(struct scsi_device * sdev)8745 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8746 {
8747 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8748 scsi_remove_device(sdev);
8749 scsi_device_put(sdev);
8750 }
8751
8752 /**
8753 * megasas_update_device_list - Update the PD and LD device list from FW
8754 * after an AEN event notification
8755 * @instance: Adapter soft state
8756 * @event_type: Indicates type of event (PD or LD event)
8757 *
8758 * @return: Success or failure
8759 *
8760 * Issue DCMDs to Firmware to update the internal device list in driver.
8761 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8762 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8763 */
8764 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8765 int megasas_update_device_list(struct megasas_instance *instance,
8766 int event_type)
8767 {
8768 int dcmd_ret;
8769
8770 if (instance->enable_fw_dev_list) {
8771 return megasas_host_device_list_query(instance, false);
8772 } else {
8773 if (event_type & SCAN_PD_CHANNEL) {
8774 dcmd_ret = megasas_get_pd_list(instance);
8775 if (dcmd_ret != DCMD_SUCCESS)
8776 return dcmd_ret;
8777 }
8778
8779 if (event_type & SCAN_VD_CHANNEL) {
8780 if (!instance->requestorId ||
8781 megasas_get_ld_vf_affiliation(instance, 0)) {
8782 return megasas_ld_list_query(instance,
8783 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8784 }
8785 }
8786 }
8787 return DCMD_SUCCESS;
8788 }
8789
8790 /**
8791 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8792 * after an AEN event notification
8793 * @instance: Adapter soft state
8794 * @scan_type: Indicates type of devices (PD/LD) to add
8795 * @return void
8796 */
8797 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8798 void megasas_add_remove_devices(struct megasas_instance *instance,
8799 int scan_type)
8800 {
8801 int i, j;
8802 u16 pd_index = 0;
8803 u16 ld_index = 0;
8804 u16 channel = 0, id = 0;
8805 struct Scsi_Host *host;
8806 struct scsi_device *sdev1;
8807 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8808 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8809
8810 host = instance->host;
8811
8812 if (instance->enable_fw_dev_list) {
8813 targetid_list = instance->host_device_list_buf;
8814 for (i = 0; i < targetid_list->count; i++) {
8815 targetid_entry = &targetid_list->host_device_list[i];
8816 if (targetid_entry->flags.u.bits.is_sys_pd) {
8817 channel = le16_to_cpu(targetid_entry->target_id) /
8818 MEGASAS_MAX_DEV_PER_CHANNEL;
8819 id = le16_to_cpu(targetid_entry->target_id) %
8820 MEGASAS_MAX_DEV_PER_CHANNEL;
8821 } else {
8822 channel = MEGASAS_MAX_PD_CHANNELS +
8823 (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 }
8828 sdev1 = scsi_device_lookup(host, channel, id, 0);
8829 if (!sdev1) {
8830 scsi_add_device(host, channel, id, 0);
8831 } else {
8832 scsi_device_put(sdev1);
8833 }
8834 }
8835 }
8836
8837 if (scan_type & SCAN_PD_CHANNEL) {
8838 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8839 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8840 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8841 sdev1 = scsi_device_lookup(host, i, j, 0);
8842 if (instance->pd_list[pd_index].driveState ==
8843 MR_PD_STATE_SYSTEM) {
8844 if (!sdev1)
8845 scsi_add_device(host, i, j, 0);
8846 else
8847 scsi_device_put(sdev1);
8848 } else {
8849 if (sdev1)
8850 megasas_remove_scsi_device(sdev1);
8851 }
8852 }
8853 }
8854 }
8855
8856 if (scan_type & SCAN_VD_CHANNEL) {
8857 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8858 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8859 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8860 sdev1 = scsi_device_lookup(host,
8861 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8862 if (instance->ld_ids[ld_index] != 0xff) {
8863 if (!sdev1)
8864 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8865 else
8866 scsi_device_put(sdev1);
8867 } else {
8868 if (sdev1)
8869 megasas_remove_scsi_device(sdev1);
8870 }
8871 }
8872 }
8873 }
8874
8875 }
8876
8877 static void
megasas_aen_polling(struct work_struct * work)8878 megasas_aen_polling(struct work_struct *work)
8879 {
8880 struct megasas_aen_event *ev =
8881 container_of(work, struct megasas_aen_event, hotplug_work.work);
8882 struct megasas_instance *instance = ev->instance;
8883 union megasas_evt_class_locale class_locale;
8884 int event_type = 0;
8885 u32 seq_num;
8886 u16 ld_target_id;
8887 int error;
8888 u8 dcmd_ret = DCMD_SUCCESS;
8889 struct scsi_device *sdev1;
8890
8891 if (!instance) {
8892 printk(KERN_ERR "invalid instance!\n");
8893 kfree(ev);
8894 return;
8895 }
8896
8897 /* Don't run the event workqueue thread if OCR is running */
8898 mutex_lock(&instance->reset_mutex);
8899
8900 instance->ev = NULL;
8901 if (instance->evt_detail) {
8902 megasas_decode_evt(instance);
8903
8904 switch (le32_to_cpu(instance->evt_detail->code)) {
8905
8906 case MR_EVT_PD_INSERTED:
8907 case MR_EVT_PD_REMOVED:
8908 event_type = SCAN_PD_CHANNEL;
8909 break;
8910
8911 case MR_EVT_LD_OFFLINE:
8912 case MR_EVT_LD_DELETED:
8913 ld_target_id = instance->evt_detail->args.ld.target_id;
8914 sdev1 = scsi_device_lookup(instance->host,
8915 MEGASAS_MAX_PD_CHANNELS +
8916 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8917 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8918 0);
8919 if (sdev1) {
8920 mutex_unlock(&instance->reset_mutex);
8921 megasas_remove_scsi_device(sdev1);
8922 mutex_lock(&instance->reset_mutex);
8923 }
8924
8925 event_type = SCAN_VD_CHANNEL;
8926 break;
8927 case MR_EVT_LD_CREATED:
8928 event_type = SCAN_VD_CHANNEL;
8929 break;
8930
8931 case MR_EVT_CFG_CLEARED:
8932 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8933 case MR_EVT_FOREIGN_CFG_IMPORTED:
8934 case MR_EVT_LD_STATE_CHANGE:
8935 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8936 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8937 instance->host->host_no);
8938 break;
8939
8940 case MR_EVT_CTRL_PROP_CHANGED:
8941 dcmd_ret = megasas_get_ctrl_info(instance);
8942 if (dcmd_ret == DCMD_SUCCESS &&
8943 instance->snapdump_wait_time) {
8944 megasas_get_snapdump_properties(instance);
8945 dev_info(&instance->pdev->dev,
8946 "Snap dump wait time\t: %d\n",
8947 instance->snapdump_wait_time);
8948 }
8949 break;
8950 default:
8951 event_type = 0;
8952 break;
8953 }
8954 } else {
8955 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8956 mutex_unlock(&instance->reset_mutex);
8957 kfree(ev);
8958 return;
8959 }
8960
8961 if (event_type)
8962 dcmd_ret = megasas_update_device_list(instance, event_type);
8963
8964 mutex_unlock(&instance->reset_mutex);
8965
8966 if (event_type && dcmd_ret == DCMD_SUCCESS)
8967 megasas_add_remove_devices(instance, event_type);
8968
8969 if (dcmd_ret == DCMD_SUCCESS)
8970 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8971 else
8972 seq_num = instance->last_seq_num;
8973
8974 /* Register AEN with FW for latest sequence number plus 1 */
8975 class_locale.members.reserved = 0;
8976 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8977 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8978
8979 if (instance->aen_cmd != NULL) {
8980 kfree(ev);
8981 return;
8982 }
8983
8984 mutex_lock(&instance->reset_mutex);
8985 error = megasas_register_aen(instance, seq_num,
8986 class_locale.word);
8987 if (error)
8988 dev_err(&instance->pdev->dev,
8989 "register aen failed error %x\n", error);
8990
8991 mutex_unlock(&instance->reset_mutex);
8992 kfree(ev);
8993 }
8994
8995 /**
8996 * megasas_init - Driver load entry point
8997 */
megasas_init(void)8998 static int __init megasas_init(void)
8999 {
9000 int rval;
9001
9002 /*
9003 * Booted in kdump kernel, minimize memory footprints by
9004 * disabling few features
9005 */
9006 if (reset_devices) {
9007 msix_vectors = 1;
9008 rdpq_enable = 0;
9009 dual_qdepth_disable = 1;
9010 poll_queues = 0;
9011 }
9012
9013 /*
9014 * Announce driver version and other information
9015 */
9016 pr_info("megasas: %s\n", MEGASAS_VERSION);
9017
9018 megasas_dbg_lvl = 0;
9019 support_poll_for_event = 2;
9020 support_device_change = 1;
9021 support_nvme_encapsulation = true;
9022 support_pci_lane_margining = true;
9023
9024 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9025
9026 /*
9027 * Register character device node
9028 */
9029 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9030
9031 if (rval < 0) {
9032 printk(KERN_DEBUG "megasas: failed to open device node\n");
9033 return rval;
9034 }
9035
9036 megasas_mgmt_majorno = rval;
9037
9038 megasas_init_debugfs();
9039
9040 /*
9041 * Register ourselves as PCI hotplug module
9042 */
9043 rval = pci_register_driver(&megasas_pci_driver);
9044
9045 if (rval) {
9046 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9047 goto err_pcidrv;
9048 }
9049
9050 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9051 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9052 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");
9053 event_log_level = MFI_EVT_CLASS_CRITICAL;
9054 }
9055
9056 rval = driver_create_file(&megasas_pci_driver.driver,
9057 &driver_attr_version);
9058 if (rval)
9059 goto err_dcf_attr_ver;
9060
9061 rval = driver_create_file(&megasas_pci_driver.driver,
9062 &driver_attr_release_date);
9063 if (rval)
9064 goto err_dcf_rel_date;
9065
9066 rval = driver_create_file(&megasas_pci_driver.driver,
9067 &driver_attr_support_poll_for_event);
9068 if (rval)
9069 goto err_dcf_support_poll_for_event;
9070
9071 rval = driver_create_file(&megasas_pci_driver.driver,
9072 &driver_attr_dbg_lvl);
9073 if (rval)
9074 goto err_dcf_dbg_lvl;
9075 rval = driver_create_file(&megasas_pci_driver.driver,
9076 &driver_attr_support_device_change);
9077 if (rval)
9078 goto err_dcf_support_device_change;
9079
9080 rval = driver_create_file(&megasas_pci_driver.driver,
9081 &driver_attr_support_nvme_encapsulation);
9082 if (rval)
9083 goto err_dcf_support_nvme_encapsulation;
9084
9085 rval = driver_create_file(&megasas_pci_driver.driver,
9086 &driver_attr_support_pci_lane_margining);
9087 if (rval)
9088 goto err_dcf_support_pci_lane_margining;
9089
9090 return rval;
9091
9092 err_dcf_support_pci_lane_margining:
9093 driver_remove_file(&megasas_pci_driver.driver,
9094 &driver_attr_support_nvme_encapsulation);
9095
9096 err_dcf_support_nvme_encapsulation:
9097 driver_remove_file(&megasas_pci_driver.driver,
9098 &driver_attr_support_device_change);
9099
9100 err_dcf_support_device_change:
9101 driver_remove_file(&megasas_pci_driver.driver,
9102 &driver_attr_dbg_lvl);
9103 err_dcf_dbg_lvl:
9104 driver_remove_file(&megasas_pci_driver.driver,
9105 &driver_attr_support_poll_for_event);
9106 err_dcf_support_poll_for_event:
9107 driver_remove_file(&megasas_pci_driver.driver,
9108 &driver_attr_release_date);
9109 err_dcf_rel_date:
9110 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9111 err_dcf_attr_ver:
9112 pci_unregister_driver(&megasas_pci_driver);
9113 err_pcidrv:
9114 megasas_exit_debugfs();
9115 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9116 return rval;
9117 }
9118
9119 /**
9120 * megasas_exit - Driver unload entry point
9121 */
megasas_exit(void)9122 static void __exit megasas_exit(void)
9123 {
9124 driver_remove_file(&megasas_pci_driver.driver,
9125 &driver_attr_dbg_lvl);
9126 driver_remove_file(&megasas_pci_driver.driver,
9127 &driver_attr_support_poll_for_event);
9128 driver_remove_file(&megasas_pci_driver.driver,
9129 &driver_attr_support_device_change);
9130 driver_remove_file(&megasas_pci_driver.driver,
9131 &driver_attr_release_date);
9132 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9133 driver_remove_file(&megasas_pci_driver.driver,
9134 &driver_attr_support_nvme_encapsulation);
9135 driver_remove_file(&megasas_pci_driver.driver,
9136 &driver_attr_support_pci_lane_margining);
9137
9138 pci_unregister_driver(&megasas_pci_driver);
9139 megasas_exit_debugfs();
9140 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9141 }
9142
9143 module_init(megasas_init);
9144 module_exit(megasas_exit);
9145