1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <scsi/scsi_dbg.h>
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50 /*
51 * Number of sectors per IO command
52 * Will be set in megasas_init_mfi if user does not provide
53 */
54 static unsigned int max_sectors;
55 module_param_named(max_sectors, max_sectors, int, 0444);
56 MODULE_PARM_DESC(max_sectors,
57 "Maximum number of sectors per IO command");
58
59 static int msix_disable;
60 module_param(msix_disable, int, 0444);
61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
62
63 static unsigned int msix_vectors;
64 module_param(msix_vectors, int, 0444);
65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
66
67 static int allow_vf_ioctls;
68 module_param(allow_vf_ioctls, int, 0444);
69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
70
71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
72 module_param(throttlequeuedepth, int, 0444);
73 MODULE_PARM_DESC(throttlequeuedepth,
74 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
75
76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
77 module_param(resetwaittime, int, 0444);
78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
79
80 int smp_affinity_enable = 1;
81 module_param(smp_affinity_enable, int, 0444);
82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
83
84 int rdpq_enable = 1;
85 module_param(rdpq_enable, int, 0444);
86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
87
88 unsigned int dual_qdepth_disable;
89 module_param(dual_qdepth_disable, int, 0444);
90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
91
92 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
93 module_param(scmd_timeout, int, 0444);
94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
95
96 int perf_mode = -1;
97 module_param(perf_mode, int, 0444);
98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
99 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
100 "interrupt coalescing is enabled only on high iops queues\n\t\t"
101 "1 - iops: High iops queues are not allocated &\n\t\t"
102 "interrupt coalescing is enabled on all queues\n\t\t"
103 "2 - latency: High iops queues are not allocated &\n\t\t"
104 "interrupt coalescing is disabled on all queues\n\t\t"
105 "default mode is 'balanced'"
106 );
107
108 int event_log_level = MFI_EVT_CLASS_CRITICAL;
109 module_param(event_log_level, int, 0644);
110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
111
112 unsigned int enable_sdev_max_qd;
113 module_param(enable_sdev_max_qd, int, 0444);
114 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
115
116 MODULE_LICENSE("GPL");
117 MODULE_VERSION(MEGASAS_VERSION);
118 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
119 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
120
121 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
122 static int megasas_get_pd_list(struct megasas_instance *instance);
123 static int megasas_ld_list_query(struct megasas_instance *instance,
124 u8 query_type);
125 static int megasas_issue_init_mfi(struct megasas_instance *instance);
126 static int megasas_register_aen(struct megasas_instance *instance,
127 u32 seq_num, u32 class_locale_word);
128 static void megasas_get_pd_info(struct megasas_instance *instance,
129 struct scsi_device *sdev);
130
131 /*
132 * PCI ID table for all supported controllers
133 */
134 static struct pci_device_id megasas_pci_table[] = {
135
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
137 /* xscale IOP */
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
139 /* ppc IOP */
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
141 /* ppc IOP */
142 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
143 /* gen2*/
144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
145 /* gen2*/
146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
147 /* skinny*/
148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
149 /* skinny*/
150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
151 /* xscale IOP, vega */
152 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
155 /* Fusion */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
157 /* Plasma */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
159 /* Invader */
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
161 /* Fury */
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
163 /* Intruder */
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
165 /* Intruder 24 port*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
167 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
168 /* VENTURA */
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
183 {}
184 };
185
186 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
187
188 static int megasas_mgmt_majorno;
189 struct megasas_mgmt_info megasas_mgmt_info;
190 static struct fasync_struct *megasas_async_queue;
191 static DEFINE_MUTEX(megasas_async_queue_mutex);
192
193 static int megasas_poll_wait_aen;
194 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
195 static u32 support_poll_for_event;
196 u32 megasas_dbg_lvl;
197 static u32 support_device_change;
198 static bool support_nvme_encapsulation;
199 static bool support_pci_lane_margining;
200
201 /* define lock for aen poll */
202 spinlock_t poll_aen_lock;
203
204 extern struct dentry *megasas_debugfs_root;
205 extern void megasas_init_debugfs(void);
206 extern void megasas_exit_debugfs(void);
207 extern void megasas_setup_debugfs(struct megasas_instance *instance);
208 extern void megasas_destroy_debugfs(struct megasas_instance *instance);
209
210 void
211 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
212 u8 alt_status);
213 static u32
214 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
215 static int
216 megasas_adp_reset_gen2(struct megasas_instance *instance,
217 struct megasas_register_set __iomem *reg_set);
218 static irqreturn_t megasas_isr(int irq, void *devp);
219 static u32
220 megasas_init_adapter_mfi(struct megasas_instance *instance);
221 u32
222 megasas_build_and_issue_cmd(struct megasas_instance *instance,
223 struct scsi_cmnd *scmd);
224 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
225 int
226 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
227 int seconds);
228 void megasas_fusion_ocr_wq(struct work_struct *work);
229 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
230 int initial);
231 static int
232 megasas_set_dma_mask(struct megasas_instance *instance);
233 static int
234 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
235 static inline void
236 megasas_free_ctrl_mem(struct megasas_instance *instance);
237 static inline int
238 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
239 static inline void
240 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
241 static inline void
242 megasas_init_ctrl_params(struct megasas_instance *instance);
243
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)244 u32 megasas_readl(struct megasas_instance *instance,
245 const volatile void __iomem *addr)
246 {
247 u32 i = 0, ret_val;
248 /*
249 * Due to a HW errata in Aero controllers, reads to certain
250 * Fusion registers could intermittently return all zeroes.
251 * This behavior is transient in nature and subsequent reads will
252 * return valid value. As a workaround in driver, retry readl for
253 * upto three times until a non-zero value is read.
254 */
255 if (instance->adapter_type == AERO_SERIES) {
256 do {
257 ret_val = readl(addr);
258 i++;
259 } while (ret_val == 0 && i < 3);
260 return ret_val;
261 } else {
262 return readl(addr);
263 }
264 }
265
266 /**
267 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
268 * @instance: Adapter soft state
269 * @dcmd: DCMD frame inside MFI command
270 * @dma_addr: DMA address of buffer to be passed to FW
271 * @dma_len: Length of DMA buffer to be passed to FW
272 * @return: void
273 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)274 void megasas_set_dma_settings(struct megasas_instance *instance,
275 struct megasas_dcmd_frame *dcmd,
276 dma_addr_t dma_addr, u32 dma_len)
277 {
278 if (instance->consistent_mask_64bit) {
279 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
280 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
281 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
282
283 } else {
284 dcmd->sgl.sge32[0].phys_addr =
285 cpu_to_le32(lower_32_bits(dma_addr));
286 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
287 dcmd->flags = cpu_to_le16(dcmd->flags);
288 }
289 }
290
291 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)292 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
293 {
294 instance->instancet->fire_cmd(instance,
295 cmd->frame_phys_addr, 0, instance->reg_set);
296 return;
297 }
298
299 /**
300 * megasas_get_cmd - Get a command from the free pool
301 * @instance: Adapter soft state
302 *
303 * Returns a free command from the pool
304 */
megasas_get_cmd(struct megasas_instance * instance)305 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
306 *instance)
307 {
308 unsigned long flags;
309 struct megasas_cmd *cmd = NULL;
310
311 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
312
313 if (!list_empty(&instance->cmd_pool)) {
314 cmd = list_entry((&instance->cmd_pool)->next,
315 struct megasas_cmd, list);
316 list_del_init(&cmd->list);
317 } else {
318 dev_err(&instance->pdev->dev, "Command pool empty!\n");
319 }
320
321 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
322 return cmd;
323 }
324
325 /**
326 * megasas_return_cmd - Return a cmd to free command pool
327 * @instance: Adapter soft state
328 * @cmd: Command packet to be returned to free command pool
329 */
330 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)331 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
332 {
333 unsigned long flags;
334 u32 blk_tags;
335 struct megasas_cmd_fusion *cmd_fusion;
336 struct fusion_context *fusion = instance->ctrl_context;
337
338 /* This flag is used only for fusion adapter.
339 * Wait for Interrupt for Polled mode DCMD
340 */
341 if (cmd->flags & DRV_DCMD_POLLED_MODE)
342 return;
343
344 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
345
346 if (fusion) {
347 blk_tags = instance->max_scsi_cmds + cmd->index;
348 cmd_fusion = fusion->cmd_list[blk_tags];
349 megasas_return_cmd_fusion(instance, cmd_fusion);
350 }
351 cmd->scmd = NULL;
352 cmd->frame_count = 0;
353 cmd->flags = 0;
354 memset(cmd->frame, 0, instance->mfi_frame_size);
355 cmd->frame->io.context = cpu_to_le32(cmd->index);
356 if (!fusion && reset_devices)
357 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
358 list_add(&cmd->list, (&instance->cmd_pool)->next);
359
360 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
361
362 }
363
364 static const char *
format_timestamp(uint32_t timestamp)365 format_timestamp(uint32_t timestamp)
366 {
367 static char buffer[32];
368
369 if ((timestamp & 0xff000000) == 0xff000000)
370 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
371 0x00ffffff);
372 else
373 snprintf(buffer, sizeof(buffer), "%us", timestamp);
374 return buffer;
375 }
376
377 static const char *
format_class(int8_t class)378 format_class(int8_t class)
379 {
380 static char buffer[6];
381
382 switch (class) {
383 case MFI_EVT_CLASS_DEBUG:
384 return "debug";
385 case MFI_EVT_CLASS_PROGRESS:
386 return "progress";
387 case MFI_EVT_CLASS_INFO:
388 return "info";
389 case MFI_EVT_CLASS_WARNING:
390 return "WARN";
391 case MFI_EVT_CLASS_CRITICAL:
392 return "CRIT";
393 case MFI_EVT_CLASS_FATAL:
394 return "FATAL";
395 case MFI_EVT_CLASS_DEAD:
396 return "DEAD";
397 default:
398 snprintf(buffer, sizeof(buffer), "%d", class);
399 return buffer;
400 }
401 }
402
403 /**
404 * megasas_decode_evt: Decode FW AEN event and print critical event
405 * for information.
406 * @instance: Adapter soft state
407 */
408 static void
megasas_decode_evt(struct megasas_instance * instance)409 megasas_decode_evt(struct megasas_instance *instance)
410 {
411 struct megasas_evt_detail *evt_detail = instance->evt_detail;
412 union megasas_evt_class_locale class_locale;
413 class_locale.word = le32_to_cpu(evt_detail->cl.word);
414
415 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
416 (event_log_level > MFI_EVT_CLASS_DEAD)) {
417 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");
418 event_log_level = MFI_EVT_CLASS_CRITICAL;
419 }
420
421 if (class_locale.members.class >= event_log_level)
422 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
423 le32_to_cpu(evt_detail->seq_num),
424 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
425 (class_locale.members.locale),
426 format_class(class_locale.members.class),
427 evt_detail->description);
428 }
429
430 /**
431 * The following functions are defined for xscale
432 * (deviceid : 1064R, PERC5) controllers
433 */
434
435 /**
436 * megasas_enable_intr_xscale - Enables interrupts
437 * @regs: MFI register set
438 */
439 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)440 megasas_enable_intr_xscale(struct megasas_instance *instance)
441 {
442 struct megasas_register_set __iomem *regs;
443
444 regs = instance->reg_set;
445 writel(0, &(regs)->outbound_intr_mask);
446
447 /* Dummy readl to force pci flush */
448 readl(®s->outbound_intr_mask);
449 }
450
451 /**
452 * megasas_disable_intr_xscale -Disables interrupt
453 * @regs: MFI register set
454 */
455 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)456 megasas_disable_intr_xscale(struct megasas_instance *instance)
457 {
458 struct megasas_register_set __iomem *regs;
459 u32 mask = 0x1f;
460
461 regs = instance->reg_set;
462 writel(mask, ®s->outbound_intr_mask);
463 /* Dummy readl to force pci flush */
464 readl(®s->outbound_intr_mask);
465 }
466
467 /**
468 * megasas_read_fw_status_reg_xscale - returns the current FW status value
469 * @regs: MFI register set
470 */
471 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)472 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
473 {
474 return readl(&instance->reg_set->outbound_msg_0);
475 }
476 /**
477 * megasas_clear_interrupt_xscale - Check & clear interrupt
478 * @regs: MFI register set
479 */
480 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)481 megasas_clear_intr_xscale(struct megasas_instance *instance)
482 {
483 u32 status;
484 u32 mfiStatus = 0;
485 struct megasas_register_set __iomem *regs;
486 regs = instance->reg_set;
487
488 /*
489 * Check if it is our interrupt
490 */
491 status = readl(®s->outbound_intr_status);
492
493 if (status & MFI_OB_INTR_STATUS_MASK)
494 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
495 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
496 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
497
498 /*
499 * Clear the interrupt by writing back the same value
500 */
501 if (mfiStatus)
502 writel(status, ®s->outbound_intr_status);
503
504 /* Dummy readl to force pci flush */
505 readl(®s->outbound_intr_status);
506
507 return mfiStatus;
508 }
509
510 /**
511 * megasas_fire_cmd_xscale - Sends command to the FW
512 * @frame_phys_addr : Physical address of cmd
513 * @frame_count : Number of frames for the command
514 * @regs : MFI register set
515 */
516 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)517 megasas_fire_cmd_xscale(struct megasas_instance *instance,
518 dma_addr_t frame_phys_addr,
519 u32 frame_count,
520 struct megasas_register_set __iomem *regs)
521 {
522 unsigned long flags;
523
524 spin_lock_irqsave(&instance->hba_lock, flags);
525 writel((frame_phys_addr >> 3)|(frame_count),
526 &(regs)->inbound_queue_port);
527 spin_unlock_irqrestore(&instance->hba_lock, flags);
528 }
529
530 /**
531 * megasas_adp_reset_xscale - For controller reset
532 * @regs: MFI register set
533 */
534 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)535 megasas_adp_reset_xscale(struct megasas_instance *instance,
536 struct megasas_register_set __iomem *regs)
537 {
538 u32 i;
539 u32 pcidata;
540
541 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
542
543 for (i = 0; i < 3; i++)
544 msleep(1000); /* sleep for 3 secs */
545 pcidata = 0;
546 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
547 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
548 if (pcidata & 0x2) {
549 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
550 pcidata &= ~0x2;
551 pci_write_config_dword(instance->pdev,
552 MFI_1068_PCSR_OFFSET, pcidata);
553
554 for (i = 0; i < 2; i++)
555 msleep(1000); /* need to wait 2 secs again */
556
557 pcidata = 0;
558 pci_read_config_dword(instance->pdev,
559 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
560 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
561 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
562 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
563 pcidata = 0;
564 pci_write_config_dword(instance->pdev,
565 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
566 }
567 }
568 return 0;
569 }
570
571 /**
572 * megasas_check_reset_xscale - For controller reset check
573 * @regs: MFI register set
574 */
575 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)576 megasas_check_reset_xscale(struct megasas_instance *instance,
577 struct megasas_register_set __iomem *regs)
578 {
579 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
580 (le32_to_cpu(*instance->consumer) ==
581 MEGASAS_ADPRESET_INPROG_SIGN))
582 return 1;
583 return 0;
584 }
585
586 static struct megasas_instance_template megasas_instance_template_xscale = {
587
588 .fire_cmd = megasas_fire_cmd_xscale,
589 .enable_intr = megasas_enable_intr_xscale,
590 .disable_intr = megasas_disable_intr_xscale,
591 .clear_intr = megasas_clear_intr_xscale,
592 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
593 .adp_reset = megasas_adp_reset_xscale,
594 .check_reset = megasas_check_reset_xscale,
595 .service_isr = megasas_isr,
596 .tasklet = megasas_complete_cmd_dpc,
597 .init_adapter = megasas_init_adapter_mfi,
598 .build_and_issue_cmd = megasas_build_and_issue_cmd,
599 .issue_dcmd = megasas_issue_dcmd,
600 };
601
602 /**
603 * This is the end of set of functions & definitions specific
604 * to xscale (deviceid : 1064R, PERC5) controllers
605 */
606
607 /**
608 * The following functions are defined for ppc (deviceid : 0x60)
609 * controllers
610 */
611
612 /**
613 * megasas_enable_intr_ppc - Enables interrupts
614 * @regs: MFI register set
615 */
616 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)617 megasas_enable_intr_ppc(struct megasas_instance *instance)
618 {
619 struct megasas_register_set __iomem *regs;
620
621 regs = instance->reg_set;
622 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
623
624 writel(~0x80000000, &(regs)->outbound_intr_mask);
625
626 /* Dummy readl to force pci flush */
627 readl(®s->outbound_intr_mask);
628 }
629
630 /**
631 * megasas_disable_intr_ppc - Disable interrupt
632 * @regs: MFI register set
633 */
634 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)635 megasas_disable_intr_ppc(struct megasas_instance *instance)
636 {
637 struct megasas_register_set __iomem *regs;
638 u32 mask = 0xFFFFFFFF;
639
640 regs = instance->reg_set;
641 writel(mask, ®s->outbound_intr_mask);
642 /* Dummy readl to force pci flush */
643 readl(®s->outbound_intr_mask);
644 }
645
646 /**
647 * megasas_read_fw_status_reg_ppc - returns the current FW status value
648 * @regs: MFI register set
649 */
650 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)651 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
652 {
653 return readl(&instance->reg_set->outbound_scratch_pad_0);
654 }
655
656 /**
657 * megasas_clear_interrupt_ppc - Check & clear interrupt
658 * @regs: MFI register set
659 */
660 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)661 megasas_clear_intr_ppc(struct megasas_instance *instance)
662 {
663 u32 status, mfiStatus = 0;
664 struct megasas_register_set __iomem *regs;
665 regs = instance->reg_set;
666
667 /*
668 * Check if it is our interrupt
669 */
670 status = readl(®s->outbound_intr_status);
671
672 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
673 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
674
675 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
676 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
677
678 /*
679 * Clear the interrupt by writing back the same value
680 */
681 writel(status, ®s->outbound_doorbell_clear);
682
683 /* Dummy readl to force pci flush */
684 readl(®s->outbound_doorbell_clear);
685
686 return mfiStatus;
687 }
688
689 /**
690 * megasas_fire_cmd_ppc - Sends command to the FW
691 * @frame_phys_addr : Physical address of cmd
692 * @frame_count : Number of frames for the command
693 * @regs : MFI register set
694 */
695 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)696 megasas_fire_cmd_ppc(struct megasas_instance *instance,
697 dma_addr_t frame_phys_addr,
698 u32 frame_count,
699 struct megasas_register_set __iomem *regs)
700 {
701 unsigned long flags;
702
703 spin_lock_irqsave(&instance->hba_lock, flags);
704 writel((frame_phys_addr | (frame_count<<1))|1,
705 &(regs)->inbound_queue_port);
706 spin_unlock_irqrestore(&instance->hba_lock, flags);
707 }
708
709 /**
710 * megasas_check_reset_ppc - For controller reset check
711 * @regs: MFI register set
712 */
713 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)714 megasas_check_reset_ppc(struct megasas_instance *instance,
715 struct megasas_register_set __iomem *regs)
716 {
717 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
718 return 1;
719
720 return 0;
721 }
722
723 static struct megasas_instance_template megasas_instance_template_ppc = {
724
725 .fire_cmd = megasas_fire_cmd_ppc,
726 .enable_intr = megasas_enable_intr_ppc,
727 .disable_intr = megasas_disable_intr_ppc,
728 .clear_intr = megasas_clear_intr_ppc,
729 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
730 .adp_reset = megasas_adp_reset_xscale,
731 .check_reset = megasas_check_reset_ppc,
732 .service_isr = megasas_isr,
733 .tasklet = megasas_complete_cmd_dpc,
734 .init_adapter = megasas_init_adapter_mfi,
735 .build_and_issue_cmd = megasas_build_and_issue_cmd,
736 .issue_dcmd = megasas_issue_dcmd,
737 };
738
739 /**
740 * megasas_enable_intr_skinny - Enables interrupts
741 * @regs: MFI register set
742 */
743 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)744 megasas_enable_intr_skinny(struct megasas_instance *instance)
745 {
746 struct megasas_register_set __iomem *regs;
747
748 regs = instance->reg_set;
749 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
750
751 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
752
753 /* Dummy readl to force pci flush */
754 readl(®s->outbound_intr_mask);
755 }
756
757 /**
758 * megasas_disable_intr_skinny - Disables interrupt
759 * @regs: MFI register set
760 */
761 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)762 megasas_disable_intr_skinny(struct megasas_instance *instance)
763 {
764 struct megasas_register_set __iomem *regs;
765 u32 mask = 0xFFFFFFFF;
766
767 regs = instance->reg_set;
768 writel(mask, ®s->outbound_intr_mask);
769 /* Dummy readl to force pci flush */
770 readl(®s->outbound_intr_mask);
771 }
772
773 /**
774 * megasas_read_fw_status_reg_skinny - returns the current FW status value
775 * @regs: MFI register set
776 */
777 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)778 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
779 {
780 return readl(&instance->reg_set->outbound_scratch_pad_0);
781 }
782
783 /**
784 * megasas_clear_interrupt_skinny - Check & clear interrupt
785 * @regs: MFI register set
786 */
787 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)788 megasas_clear_intr_skinny(struct megasas_instance *instance)
789 {
790 u32 status;
791 u32 mfiStatus = 0;
792 struct megasas_register_set __iomem *regs;
793 regs = instance->reg_set;
794
795 /*
796 * Check if it is our interrupt
797 */
798 status = readl(®s->outbound_intr_status);
799
800 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
801 return 0;
802 }
803
804 /*
805 * Check if it is our interrupt
806 */
807 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
808 MFI_STATE_FAULT) {
809 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
810 } else
811 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
812
813 /*
814 * Clear the interrupt by writing back the same value
815 */
816 writel(status, ®s->outbound_intr_status);
817
818 /*
819 * dummy read to flush PCI
820 */
821 readl(®s->outbound_intr_status);
822
823 return mfiStatus;
824 }
825
826 /**
827 * megasas_fire_cmd_skinny - Sends command to the FW
828 * @frame_phys_addr : Physical address of cmd
829 * @frame_count : Number of frames for the command
830 * @regs : MFI register set
831 */
832 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)833 megasas_fire_cmd_skinny(struct megasas_instance *instance,
834 dma_addr_t frame_phys_addr,
835 u32 frame_count,
836 struct megasas_register_set __iomem *regs)
837 {
838 unsigned long flags;
839
840 spin_lock_irqsave(&instance->hba_lock, flags);
841 writel(upper_32_bits(frame_phys_addr),
842 &(regs)->inbound_high_queue_port);
843 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
844 &(regs)->inbound_low_queue_port);
845 spin_unlock_irqrestore(&instance->hba_lock, flags);
846 }
847
848 /**
849 * megasas_check_reset_skinny - For controller reset check
850 * @regs: MFI register set
851 */
852 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)853 megasas_check_reset_skinny(struct megasas_instance *instance,
854 struct megasas_register_set __iomem *regs)
855 {
856 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
857 return 1;
858
859 return 0;
860 }
861
862 static struct megasas_instance_template megasas_instance_template_skinny = {
863
864 .fire_cmd = megasas_fire_cmd_skinny,
865 .enable_intr = megasas_enable_intr_skinny,
866 .disable_intr = megasas_disable_intr_skinny,
867 .clear_intr = megasas_clear_intr_skinny,
868 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
869 .adp_reset = megasas_adp_reset_gen2,
870 .check_reset = megasas_check_reset_skinny,
871 .service_isr = megasas_isr,
872 .tasklet = megasas_complete_cmd_dpc,
873 .init_adapter = megasas_init_adapter_mfi,
874 .build_and_issue_cmd = megasas_build_and_issue_cmd,
875 .issue_dcmd = megasas_issue_dcmd,
876 };
877
878
879 /**
880 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
881 * controllers
882 */
883
884 /**
885 * megasas_enable_intr_gen2 - Enables interrupts
886 * @regs: MFI register set
887 */
888 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)889 megasas_enable_intr_gen2(struct megasas_instance *instance)
890 {
891 struct megasas_register_set __iomem *regs;
892
893 regs = instance->reg_set;
894 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
895
896 /* write ~0x00000005 (4 & 1) to the intr mask*/
897 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
898
899 /* Dummy readl to force pci flush */
900 readl(®s->outbound_intr_mask);
901 }
902
903 /**
904 * megasas_disable_intr_gen2 - Disables interrupt
905 * @regs: MFI register set
906 */
907 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)908 megasas_disable_intr_gen2(struct megasas_instance *instance)
909 {
910 struct megasas_register_set __iomem *regs;
911 u32 mask = 0xFFFFFFFF;
912
913 regs = instance->reg_set;
914 writel(mask, ®s->outbound_intr_mask);
915 /* Dummy readl to force pci flush */
916 readl(®s->outbound_intr_mask);
917 }
918
919 /**
920 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
921 * @regs: MFI register set
922 */
923 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)924 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
925 {
926 return readl(&instance->reg_set->outbound_scratch_pad_0);
927 }
928
929 /**
930 * megasas_clear_interrupt_gen2 - Check & clear interrupt
931 * @regs: MFI register set
932 */
933 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)934 megasas_clear_intr_gen2(struct megasas_instance *instance)
935 {
936 u32 status;
937 u32 mfiStatus = 0;
938 struct megasas_register_set __iomem *regs;
939 regs = instance->reg_set;
940
941 /*
942 * Check if it is our interrupt
943 */
944 status = readl(®s->outbound_intr_status);
945
946 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
947 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
948 }
949 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
950 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
951 }
952
953 /*
954 * Clear the interrupt by writing back the same value
955 */
956 if (mfiStatus)
957 writel(status, ®s->outbound_doorbell_clear);
958
959 /* Dummy readl to force pci flush */
960 readl(®s->outbound_intr_status);
961
962 return mfiStatus;
963 }
964 /**
965 * megasas_fire_cmd_gen2 - Sends command to the FW
966 * @frame_phys_addr : Physical address of cmd
967 * @frame_count : Number of frames for the command
968 * @regs : MFI register set
969 */
970 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)971 megasas_fire_cmd_gen2(struct megasas_instance *instance,
972 dma_addr_t frame_phys_addr,
973 u32 frame_count,
974 struct megasas_register_set __iomem *regs)
975 {
976 unsigned long flags;
977
978 spin_lock_irqsave(&instance->hba_lock, flags);
979 writel((frame_phys_addr | (frame_count<<1))|1,
980 &(regs)->inbound_queue_port);
981 spin_unlock_irqrestore(&instance->hba_lock, flags);
982 }
983
984 /**
985 * megasas_adp_reset_gen2 - For controller reset
986 * @regs: MFI register set
987 */
988 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)989 megasas_adp_reset_gen2(struct megasas_instance *instance,
990 struct megasas_register_set __iomem *reg_set)
991 {
992 u32 retry = 0 ;
993 u32 HostDiag;
994 u32 __iomem *seq_offset = ®_set->seq_offset;
995 u32 __iomem *hostdiag_offset = ®_set->host_diag;
996
997 if (instance->instancet == &megasas_instance_template_skinny) {
998 seq_offset = ®_set->fusion_seq_offset;
999 hostdiag_offset = ®_set->fusion_host_diag;
1000 }
1001
1002 writel(0, seq_offset);
1003 writel(4, seq_offset);
1004 writel(0xb, seq_offset);
1005 writel(2, seq_offset);
1006 writel(7, seq_offset);
1007 writel(0xd, seq_offset);
1008
1009 msleep(1000);
1010
1011 HostDiag = (u32)readl(hostdiag_offset);
1012
1013 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1014 msleep(100);
1015 HostDiag = (u32)readl(hostdiag_offset);
1016 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1017 retry, HostDiag);
1018
1019 if (retry++ >= 100)
1020 return 1;
1021
1022 }
1023
1024 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1025
1026 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1027
1028 ssleep(10);
1029
1030 HostDiag = (u32)readl(hostdiag_offset);
1031 while (HostDiag & DIAG_RESET_ADAPTER) {
1032 msleep(100);
1033 HostDiag = (u32)readl(hostdiag_offset);
1034 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1035 retry, HostDiag);
1036
1037 if (retry++ >= 1000)
1038 return 1;
1039
1040 }
1041 return 0;
1042 }
1043
1044 /**
1045 * megasas_check_reset_gen2 - For controller reset check
1046 * @regs: MFI register set
1047 */
1048 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1049 megasas_check_reset_gen2(struct megasas_instance *instance,
1050 struct megasas_register_set __iomem *regs)
1051 {
1052 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1053 return 1;
1054
1055 return 0;
1056 }
1057
1058 static struct megasas_instance_template megasas_instance_template_gen2 = {
1059
1060 .fire_cmd = megasas_fire_cmd_gen2,
1061 .enable_intr = megasas_enable_intr_gen2,
1062 .disable_intr = megasas_disable_intr_gen2,
1063 .clear_intr = megasas_clear_intr_gen2,
1064 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1065 .adp_reset = megasas_adp_reset_gen2,
1066 .check_reset = megasas_check_reset_gen2,
1067 .service_isr = megasas_isr,
1068 .tasklet = megasas_complete_cmd_dpc,
1069 .init_adapter = megasas_init_adapter_mfi,
1070 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1071 .issue_dcmd = megasas_issue_dcmd,
1072 };
1073
1074 /**
1075 * This is the end of set of functions & definitions
1076 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1077 */
1078
1079 /*
1080 * Template added for TB (Fusion)
1081 */
1082 extern struct megasas_instance_template megasas_instance_template_fusion;
1083
1084 /**
1085 * megasas_issue_polled - Issues a polling command
1086 * @instance: Adapter soft state
1087 * @cmd: Command packet to be issued
1088 *
1089 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1090 */
1091 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1092 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1093 {
1094 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1095
1096 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1097 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1098
1099 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1100 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1101 __func__, __LINE__);
1102 return DCMD_NOT_FIRED;
1103 }
1104
1105 instance->instancet->issue_dcmd(instance, cmd);
1106
1107 return wait_and_poll(instance, cmd, instance->requestorId ?
1108 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1109 }
1110
1111 /**
1112 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1113 * @instance: Adapter soft state
1114 * @cmd: Command to be issued
1115 * @timeout: Timeout in seconds
1116 *
1117 * This function waits on an event for the command to be returned from ISR.
1118 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1119 * Used to issue ioctl commands.
1120 */
1121 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1122 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1123 struct megasas_cmd *cmd, int timeout)
1124 {
1125 int ret = 0;
1126 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1127
1128 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1129 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1130 __func__, __LINE__);
1131 return DCMD_NOT_FIRED;
1132 }
1133
1134 instance->instancet->issue_dcmd(instance, cmd);
1135
1136 if (timeout) {
1137 ret = wait_event_timeout(instance->int_cmd_wait_q,
1138 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1139 if (!ret) {
1140 dev_err(&instance->pdev->dev,
1141 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1142 cmd->frame->dcmd.opcode, __func__);
1143 return DCMD_TIMEOUT;
1144 }
1145 } else
1146 wait_event(instance->int_cmd_wait_q,
1147 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1148
1149 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1150 DCMD_SUCCESS : DCMD_FAILED;
1151 }
1152
1153 /**
1154 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1155 * @instance: Adapter soft state
1156 * @cmd_to_abort: Previously issued cmd to be aborted
1157 * @timeout: Timeout in seconds
1158 *
1159 * MFI firmware can abort previously issued AEN comamnd (automatic event
1160 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1161 * cmd and waits for return status.
1162 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1163 */
1164 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1165 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1166 struct megasas_cmd *cmd_to_abort, int timeout)
1167 {
1168 struct megasas_cmd *cmd;
1169 struct megasas_abort_frame *abort_fr;
1170 int ret = 0;
1171 u32 opcode;
1172
1173 cmd = megasas_get_cmd(instance);
1174
1175 if (!cmd)
1176 return -1;
1177
1178 abort_fr = &cmd->frame->abort;
1179
1180 /*
1181 * Prepare and issue the abort frame
1182 */
1183 abort_fr->cmd = MFI_CMD_ABORT;
1184 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1185 abort_fr->flags = cpu_to_le16(0);
1186 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1187 abort_fr->abort_mfi_phys_addr_lo =
1188 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1189 abort_fr->abort_mfi_phys_addr_hi =
1190 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1191
1192 cmd->sync_cmd = 1;
1193 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1194
1195 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1196 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1197 __func__, __LINE__);
1198 return DCMD_NOT_FIRED;
1199 }
1200
1201 instance->instancet->issue_dcmd(instance, cmd);
1202
1203 if (timeout) {
1204 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1205 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1206 if (!ret) {
1207 opcode = cmd_to_abort->frame->dcmd.opcode;
1208 dev_err(&instance->pdev->dev,
1209 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1210 opcode, __func__);
1211 return DCMD_TIMEOUT;
1212 }
1213 } else
1214 wait_event(instance->abort_cmd_wait_q,
1215 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1216
1217 cmd->sync_cmd = 0;
1218
1219 megasas_return_cmd(instance, cmd);
1220 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1221 DCMD_SUCCESS : DCMD_FAILED;
1222 }
1223
1224 /**
1225 * megasas_make_sgl32 - Prepares 32-bit SGL
1226 * @instance: Adapter soft state
1227 * @scp: SCSI command from the mid-layer
1228 * @mfi_sgl: SGL to be filled in
1229 *
1230 * If successful, this function returns the number of SG elements. Otherwise,
1231 * it returnes -1.
1232 */
1233 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1234 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1235 union megasas_sgl *mfi_sgl)
1236 {
1237 int i;
1238 int sge_count;
1239 struct scatterlist *os_sgl;
1240
1241 sge_count = scsi_dma_map(scp);
1242 BUG_ON(sge_count < 0);
1243
1244 if (sge_count) {
1245 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1246 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1247 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1248 }
1249 }
1250 return sge_count;
1251 }
1252
1253 /**
1254 * megasas_make_sgl64 - Prepares 64-bit SGL
1255 * @instance: Adapter soft state
1256 * @scp: SCSI command from the mid-layer
1257 * @mfi_sgl: SGL to be filled in
1258 *
1259 * If successful, this function returns the number of SG elements. Otherwise,
1260 * it returnes -1.
1261 */
1262 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1263 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1264 union megasas_sgl *mfi_sgl)
1265 {
1266 int i;
1267 int sge_count;
1268 struct scatterlist *os_sgl;
1269
1270 sge_count = scsi_dma_map(scp);
1271 BUG_ON(sge_count < 0);
1272
1273 if (sge_count) {
1274 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1275 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1276 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1277 }
1278 }
1279 return sge_count;
1280 }
1281
1282 /**
1283 * megasas_make_sgl_skinny - Prepares IEEE SGL
1284 * @instance: Adapter soft state
1285 * @scp: SCSI command from the mid-layer
1286 * @mfi_sgl: SGL to be filled in
1287 *
1288 * If successful, this function returns the number of SG elements. Otherwise,
1289 * it returnes -1.
1290 */
1291 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1292 megasas_make_sgl_skinny(struct megasas_instance *instance,
1293 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1294 {
1295 int i;
1296 int sge_count;
1297 struct scatterlist *os_sgl;
1298
1299 sge_count = scsi_dma_map(scp);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge_skinny[i].length =
1304 cpu_to_le32(sg_dma_len(os_sgl));
1305 mfi_sgl->sge_skinny[i].phys_addr =
1306 cpu_to_le64(sg_dma_address(os_sgl));
1307 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1308 }
1309 }
1310 return sge_count;
1311 }
1312
1313 /**
1314 * megasas_get_frame_count - Computes the number of frames
1315 * @frame_type : type of frame- io or pthru frame
1316 * @sge_count : number of sg elements
1317 *
1318 * Returns the number of frames required for numnber of sge's (sge_count)
1319 */
1320
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1321 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1322 u8 sge_count, u8 frame_type)
1323 {
1324 int num_cnt;
1325 int sge_bytes;
1326 u32 sge_sz;
1327 u32 frame_count = 0;
1328
1329 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1330 sizeof(struct megasas_sge32);
1331
1332 if (instance->flag_ieee) {
1333 sge_sz = sizeof(struct megasas_sge_skinny);
1334 }
1335
1336 /*
1337 * Main frame can contain 2 SGEs for 64-bit SGLs and
1338 * 3 SGEs for 32-bit SGLs for ldio &
1339 * 1 SGEs for 64-bit SGLs and
1340 * 2 SGEs for 32-bit SGLs for pthru frame
1341 */
1342 if (unlikely(frame_type == PTHRU_FRAME)) {
1343 if (instance->flag_ieee == 1) {
1344 num_cnt = sge_count - 1;
1345 } else if (IS_DMA64)
1346 num_cnt = sge_count - 1;
1347 else
1348 num_cnt = sge_count - 2;
1349 } else {
1350 if (instance->flag_ieee == 1) {
1351 num_cnt = sge_count - 1;
1352 } else if (IS_DMA64)
1353 num_cnt = sge_count - 2;
1354 else
1355 num_cnt = sge_count - 3;
1356 }
1357
1358 if (num_cnt > 0) {
1359 sge_bytes = sge_sz * num_cnt;
1360
1361 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1362 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1363 }
1364 /* Main frame */
1365 frame_count += 1;
1366
1367 if (frame_count > 7)
1368 frame_count = 8;
1369 return frame_count;
1370 }
1371
1372 /**
1373 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1374 * @instance: Adapter soft state
1375 * @scp: SCSI command
1376 * @cmd: Command to be prepared in
1377 *
1378 * This function prepares CDB commands. These are typcially pass-through
1379 * commands to the devices.
1380 */
1381 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1382 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1383 struct megasas_cmd *cmd)
1384 {
1385 u32 is_logical;
1386 u32 device_id;
1387 u16 flags = 0;
1388 struct megasas_pthru_frame *pthru;
1389
1390 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1391 device_id = MEGASAS_DEV_INDEX(scp);
1392 pthru = (struct megasas_pthru_frame *)cmd->frame;
1393
1394 if (scp->sc_data_direction == DMA_TO_DEVICE)
1395 flags = MFI_FRAME_DIR_WRITE;
1396 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1397 flags = MFI_FRAME_DIR_READ;
1398 else if (scp->sc_data_direction == DMA_NONE)
1399 flags = MFI_FRAME_DIR_NONE;
1400
1401 if (instance->flag_ieee == 1) {
1402 flags |= MFI_FRAME_IEEE;
1403 }
1404
1405 /*
1406 * Prepare the DCDB frame
1407 */
1408 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1409 pthru->cmd_status = 0x0;
1410 pthru->scsi_status = 0x0;
1411 pthru->target_id = device_id;
1412 pthru->lun = scp->device->lun;
1413 pthru->cdb_len = scp->cmd_len;
1414 pthru->timeout = 0;
1415 pthru->pad_0 = 0;
1416 pthru->flags = cpu_to_le16(flags);
1417 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1418
1419 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1420
1421 /*
1422 * If the command is for the tape device, set the
1423 * pthru timeout to the os layer timeout value.
1424 */
1425 if (scp->device->type == TYPE_TAPE) {
1426 if ((scp->request->timeout / HZ) > 0xFFFF)
1427 pthru->timeout = cpu_to_le16(0xFFFF);
1428 else
1429 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1430 }
1431
1432 /*
1433 * Construct SGL
1434 */
1435 if (instance->flag_ieee == 1) {
1436 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1437 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1438 &pthru->sgl);
1439 } else if (IS_DMA64) {
1440 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1441 pthru->sge_count = megasas_make_sgl64(instance, scp,
1442 &pthru->sgl);
1443 } else
1444 pthru->sge_count = megasas_make_sgl32(instance, scp,
1445 &pthru->sgl);
1446
1447 if (pthru->sge_count > instance->max_num_sge) {
1448 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1449 pthru->sge_count);
1450 return 0;
1451 }
1452
1453 /*
1454 * Sense info specific
1455 */
1456 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1457 pthru->sense_buf_phys_addr_hi =
1458 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1459 pthru->sense_buf_phys_addr_lo =
1460 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1461
1462 /*
1463 * Compute the total number of frames this command consumes. FW uses
1464 * this number to pull sufficient number of frames from host memory.
1465 */
1466 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1467 PTHRU_FRAME);
1468
1469 return cmd->frame_count;
1470 }
1471
1472 /**
1473 * megasas_build_ldio - Prepares IOs to logical devices
1474 * @instance: Adapter soft state
1475 * @scp: SCSI command
1476 * @cmd: Command to be prepared
1477 *
1478 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1479 */
1480 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1481 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1482 struct megasas_cmd *cmd)
1483 {
1484 u32 device_id;
1485 u8 sc = scp->cmnd[0];
1486 u16 flags = 0;
1487 struct megasas_io_frame *ldio;
1488
1489 device_id = MEGASAS_DEV_INDEX(scp);
1490 ldio = (struct megasas_io_frame *)cmd->frame;
1491
1492 if (scp->sc_data_direction == DMA_TO_DEVICE)
1493 flags = MFI_FRAME_DIR_WRITE;
1494 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1495 flags = MFI_FRAME_DIR_READ;
1496
1497 if (instance->flag_ieee == 1) {
1498 flags |= MFI_FRAME_IEEE;
1499 }
1500
1501 /*
1502 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1503 */
1504 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1505 ldio->cmd_status = 0x0;
1506 ldio->scsi_status = 0x0;
1507 ldio->target_id = device_id;
1508 ldio->timeout = 0;
1509 ldio->reserved_0 = 0;
1510 ldio->pad_0 = 0;
1511 ldio->flags = cpu_to_le16(flags);
1512 ldio->start_lba_hi = 0;
1513 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1514
1515 /*
1516 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1517 */
1518 if (scp->cmd_len == 6) {
1519 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1520 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1521 ((u32) scp->cmnd[2] << 8) |
1522 (u32) scp->cmnd[3]);
1523
1524 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1525 }
1526
1527 /*
1528 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1529 */
1530 else if (scp->cmd_len == 10) {
1531 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1532 ((u32) scp->cmnd[7] << 8));
1533 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1534 ((u32) scp->cmnd[3] << 16) |
1535 ((u32) scp->cmnd[4] << 8) |
1536 (u32) scp->cmnd[5]);
1537 }
1538
1539 /*
1540 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1541 */
1542 else if (scp->cmd_len == 12) {
1543 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1544 ((u32) scp->cmnd[7] << 16) |
1545 ((u32) scp->cmnd[8] << 8) |
1546 (u32) scp->cmnd[9]);
1547
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1549 ((u32) scp->cmnd[3] << 16) |
1550 ((u32) scp->cmnd[4] << 8) |
1551 (u32) scp->cmnd[5]);
1552 }
1553
1554 /*
1555 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1556 */
1557 else if (scp->cmd_len == 16) {
1558 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1559 ((u32) scp->cmnd[11] << 16) |
1560 ((u32) scp->cmnd[12] << 8) |
1561 (u32) scp->cmnd[13]);
1562
1563 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1564 ((u32) scp->cmnd[7] << 16) |
1565 ((u32) scp->cmnd[8] << 8) |
1566 (u32) scp->cmnd[9]);
1567
1568 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1569 ((u32) scp->cmnd[3] << 16) |
1570 ((u32) scp->cmnd[4] << 8) |
1571 (u32) scp->cmnd[5]);
1572
1573 }
1574
1575 /*
1576 * Construct SGL
1577 */
1578 if (instance->flag_ieee) {
1579 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1580 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1581 &ldio->sgl);
1582 } else if (IS_DMA64) {
1583 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1584 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1585 } else
1586 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1587
1588 if (ldio->sge_count > instance->max_num_sge) {
1589 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1590 ldio->sge_count);
1591 return 0;
1592 }
1593
1594 /*
1595 * Sense info specific
1596 */
1597 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1598 ldio->sense_buf_phys_addr_hi = 0;
1599 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1600
1601 /*
1602 * Compute the total number of frames this command consumes. FW uses
1603 * this number to pull sufficient number of frames from host memory.
1604 */
1605 cmd->frame_count = megasas_get_frame_count(instance,
1606 ldio->sge_count, IO_FRAME);
1607
1608 return cmd->frame_count;
1609 }
1610
1611 /**
1612 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1613 * and whether it's RW or non RW
1614 * @scmd: SCSI command
1615 *
1616 */
megasas_cmd_type(struct scsi_cmnd * cmd)1617 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1618 {
1619 int ret;
1620
1621 switch (cmd->cmnd[0]) {
1622 case READ_10:
1623 case WRITE_10:
1624 case READ_12:
1625 case WRITE_12:
1626 case READ_6:
1627 case WRITE_6:
1628 case READ_16:
1629 case WRITE_16:
1630 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1631 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1632 break;
1633 default:
1634 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1635 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1636 }
1637 return ret;
1638 }
1639
1640 /**
1641 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1642 * in FW
1643 * @instance: Adapter soft state
1644 */
1645 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1646 megasas_dump_pending_frames(struct megasas_instance *instance)
1647 {
1648 struct megasas_cmd *cmd;
1649 int i,n;
1650 union megasas_sgl *mfi_sgl;
1651 struct megasas_io_frame *ldio;
1652 struct megasas_pthru_frame *pthru;
1653 u32 sgcount;
1654 u16 max_cmd = instance->max_fw_cmds;
1655
1656 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1657 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1658 if (IS_DMA64)
1659 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1660 else
1661 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1662
1663 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1664 for (i = 0; i < max_cmd; i++) {
1665 cmd = instance->cmd_list[i];
1666 if (!cmd->scmd)
1667 continue;
1668 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1669 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1670 ldio = (struct megasas_io_frame *)cmd->frame;
1671 mfi_sgl = &ldio->sgl;
1672 sgcount = ldio->sge_count;
1673 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1674 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1675 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1676 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1677 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1678 } else {
1679 pthru = (struct megasas_pthru_frame *) cmd->frame;
1680 mfi_sgl = &pthru->sgl;
1681 sgcount = pthru->sge_count;
1682 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1683 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1684 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1685 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1686 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1687 }
1688 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1689 for (n = 0; n < sgcount; n++) {
1690 if (IS_DMA64)
1691 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1692 le32_to_cpu(mfi_sgl->sge64[n].length),
1693 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1694 else
1695 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1696 le32_to_cpu(mfi_sgl->sge32[n].length),
1697 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1698 }
1699 }
1700 } /*for max_cmd*/
1701 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1702 for (i = 0; i < max_cmd; i++) {
1703
1704 cmd = instance->cmd_list[i];
1705
1706 if (cmd->sync_cmd == 1)
1707 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1708 }
1709 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1710 }
1711
1712 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1713 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1714 struct scsi_cmnd *scmd)
1715 {
1716 struct megasas_cmd *cmd;
1717 u32 frame_count;
1718
1719 cmd = megasas_get_cmd(instance);
1720 if (!cmd)
1721 return SCSI_MLQUEUE_HOST_BUSY;
1722
1723 /*
1724 * Logical drive command
1725 */
1726 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1727 frame_count = megasas_build_ldio(instance, scmd, cmd);
1728 else
1729 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1730
1731 if (!frame_count)
1732 goto out_return_cmd;
1733
1734 cmd->scmd = scmd;
1735 scmd->SCp.ptr = (char *)cmd;
1736
1737 /*
1738 * Issue the command to the FW
1739 */
1740 atomic_inc(&instance->fw_outstanding);
1741
1742 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1743 cmd->frame_count-1, instance->reg_set);
1744
1745 return 0;
1746 out_return_cmd:
1747 megasas_return_cmd(instance, cmd);
1748 return SCSI_MLQUEUE_HOST_BUSY;
1749 }
1750
1751
1752 /**
1753 * megasas_queue_command - Queue entry point
1754 * @scmd: SCSI command to be queued
1755 * @done: Callback entry point
1756 */
1757 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1758 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1759 {
1760 struct megasas_instance *instance;
1761 struct MR_PRIV_DEVICE *mr_device_priv_data;
1762
1763 instance = (struct megasas_instance *)
1764 scmd->device->host->hostdata;
1765
1766 if (instance->unload == 1) {
1767 scmd->result = DID_NO_CONNECT << 16;
1768 scmd->scsi_done(scmd);
1769 return 0;
1770 }
1771
1772 if (instance->issuepend_done == 0)
1773 return SCSI_MLQUEUE_HOST_BUSY;
1774
1775
1776 /* Check for an mpio path and adjust behavior */
1777 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1778 if (megasas_check_mpio_paths(instance, scmd) ==
1779 (DID_REQUEUE << 16)) {
1780 return SCSI_MLQUEUE_HOST_BUSY;
1781 } else {
1782 scmd->result = DID_NO_CONNECT << 16;
1783 scmd->scsi_done(scmd);
1784 return 0;
1785 }
1786 }
1787
1788 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1789 scmd->result = DID_NO_CONNECT << 16;
1790 scmd->scsi_done(scmd);
1791 return 0;
1792 }
1793
1794 mr_device_priv_data = scmd->device->hostdata;
1795 if (!mr_device_priv_data) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scmd->scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804 if (mr_device_priv_data->tm_busy)
1805 return SCSI_MLQUEUE_DEVICE_BUSY;
1806
1807
1808 scmd->result = 0;
1809
1810 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1811 (scmd->device->id >= instance->fw_supported_vd_count ||
1812 scmd->device->lun)) {
1813 scmd->result = DID_BAD_TARGET << 16;
1814 goto out_done;
1815 }
1816
1817 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1818 MEGASAS_IS_LOGICAL(scmd->device) &&
1819 (!instance->fw_sync_cache_support)) {
1820 scmd->result = DID_OK << 16;
1821 goto out_done;
1822 }
1823
1824 return instance->instancet->build_and_issue_cmd(instance, scmd);
1825
1826 out_done:
1827 scmd->scsi_done(scmd);
1828 return 0;
1829 }
1830
megasas_lookup_instance(u16 host_no)1831 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1832 {
1833 int i;
1834
1835 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1836
1837 if ((megasas_mgmt_info.instance[i]) &&
1838 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1839 return megasas_mgmt_info.instance[i];
1840 }
1841
1842 return NULL;
1843 }
1844
1845 /*
1846 * megasas_set_dynamic_target_properties -
1847 * Device property set by driver may not be static and it is required to be
1848 * updated after OCR
1849 *
1850 * set tm_capable.
1851 * set dma alignment (only for eedp protection enable vd).
1852 *
1853 * @sdev: OS provided scsi device
1854 *
1855 * Returns void
1856 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1857 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1858 bool is_target_prop)
1859 {
1860 u16 pd_index = 0, ld;
1861 u32 device_id;
1862 struct megasas_instance *instance;
1863 struct fusion_context *fusion;
1864 struct MR_PRIV_DEVICE *mr_device_priv_data;
1865 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1866 struct MR_LD_RAID *raid;
1867 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1868
1869 instance = megasas_lookup_instance(sdev->host->host_no);
1870 fusion = instance->ctrl_context;
1871 mr_device_priv_data = sdev->hostdata;
1872
1873 if (!fusion || !mr_device_priv_data)
1874 return;
1875
1876 if (MEGASAS_IS_LOGICAL(sdev)) {
1877 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1878 + sdev->id;
1879 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1880 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1881 if (ld >= instance->fw_supported_vd_count)
1882 return;
1883 raid = MR_LdRaidGet(ld, local_map_ptr);
1884
1885 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1886 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1887
1888 mr_device_priv_data->is_tm_capable =
1889 raid->capability.tmCapable;
1890 } else if (instance->use_seqnum_jbod_fp) {
1891 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1892 sdev->id;
1893 pd_sync = (void *)fusion->pd_seq_sync
1894 [(instance->pd_seq_map_id - 1) & 1];
1895 mr_device_priv_data->is_tm_capable =
1896 pd_sync->seq[pd_index].capability.tmCapable;
1897 }
1898
1899 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1900 /*
1901 * If FW provides a target reset timeout value, driver will use
1902 * it. If not set, fallback to default values.
1903 */
1904 mr_device_priv_data->target_reset_tmo =
1905 min_t(u8, instance->max_reset_tmo,
1906 instance->tgt_prop->reset_tmo);
1907 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1908 } else {
1909 mr_device_priv_data->target_reset_tmo =
1910 MEGASAS_DEFAULT_TM_TIMEOUT;
1911 mr_device_priv_data->task_abort_tmo =
1912 MEGASAS_DEFAULT_TM_TIMEOUT;
1913 }
1914 }
1915
1916 /*
1917 * megasas_set_nvme_device_properties -
1918 * set nomerges=2
1919 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1920 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1921 *
1922 * MR firmware provides value in KB. Caller of this function converts
1923 * kb into bytes.
1924 *
1925 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1926 * MR firmware provides value 128 as (32 * 4K) = 128K.
1927 *
1928 * @sdev: scsi device
1929 * @max_io_size: maximum io transfer size
1930 *
1931 */
1932 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1933 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1934 {
1935 struct megasas_instance *instance;
1936 u32 mr_nvme_pg_size;
1937
1938 instance = (struct megasas_instance *)sdev->host->hostdata;
1939 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1940 MR_DEFAULT_NVME_PAGE_SIZE);
1941
1942 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1943
1944 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1945 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1946 }
1947
1948 /*
1949 * megasas_set_fw_assisted_qd -
1950 * set device queue depth to can_queue
1951 * set device queue depth to fw assisted qd
1952 *
1953 * @sdev: scsi device
1954 * @is_target_prop true, if fw provided target properties.
1955 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1956 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1957 bool is_target_prop)
1958 {
1959 u8 interface_type;
1960 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1961 u32 tgt_device_qd;
1962 struct megasas_instance *instance;
1963 struct MR_PRIV_DEVICE *mr_device_priv_data;
1964
1965 instance = megasas_lookup_instance(sdev->host->host_no);
1966 mr_device_priv_data = sdev->hostdata;
1967 interface_type = mr_device_priv_data->interface_type;
1968
1969 switch (interface_type) {
1970 case SAS_PD:
1971 device_qd = MEGASAS_SAS_QD;
1972 break;
1973 case SATA_PD:
1974 device_qd = MEGASAS_SATA_QD;
1975 break;
1976 case NVME_PD:
1977 device_qd = MEGASAS_NVME_QD;
1978 break;
1979 }
1980
1981 if (is_target_prop) {
1982 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1983 if (tgt_device_qd &&
1984 (tgt_device_qd <= instance->host->can_queue))
1985 device_qd = tgt_device_qd;
1986 }
1987
1988 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
1989 device_qd = instance->host->can_queue;
1990
1991 scsi_change_queue_depth(sdev, device_qd);
1992 }
1993
1994 /*
1995 * megasas_set_static_target_properties -
1996 * Device property set by driver are static and it is not required to be
1997 * updated after OCR.
1998 *
1999 * set io timeout
2000 * set device queue depth
2001 * set nvme device properties. see - megasas_set_nvme_device_properties
2002 *
2003 * @sdev: scsi device
2004 * @is_target_prop true, if fw provided target properties.
2005 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2006 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2007 bool is_target_prop)
2008 {
2009 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2010 struct megasas_instance *instance;
2011
2012 instance = megasas_lookup_instance(sdev->host->host_no);
2013
2014 /*
2015 * The RAID firmware may require extended timeouts.
2016 */
2017 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2018
2019 /* max_io_size_kb will be set to non zero for
2020 * nvme based vd and syspd.
2021 */
2022 if (is_target_prop)
2023 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2024
2025 if (instance->nvme_page_size && max_io_size_kb)
2026 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2027
2028 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2029 }
2030
2031
megasas_slave_configure(struct scsi_device * sdev)2032 static int megasas_slave_configure(struct scsi_device *sdev)
2033 {
2034 u16 pd_index = 0;
2035 struct megasas_instance *instance;
2036 int ret_target_prop = DCMD_FAILED;
2037 bool is_target_prop = false;
2038
2039 instance = megasas_lookup_instance(sdev->host->host_no);
2040 if (instance->pd_list_not_supported) {
2041 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2042 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2043 sdev->id;
2044 if (instance->pd_list[pd_index].driveState !=
2045 MR_PD_STATE_SYSTEM)
2046 return -ENXIO;
2047 }
2048 }
2049
2050 mutex_lock(&instance->reset_mutex);
2051 /* Send DCMD to Firmware and cache the information */
2052 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2053 megasas_get_pd_info(instance, sdev);
2054
2055 /* Some ventura firmware may not have instance->nvme_page_size set.
2056 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2057 */
2058 if ((instance->tgt_prop) && (instance->nvme_page_size))
2059 ret_target_prop = megasas_get_target_prop(instance, sdev);
2060
2061 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2062 megasas_set_static_target_properties(sdev, is_target_prop);
2063
2064 /* This sdev property may change post OCR */
2065 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2066
2067 mutex_unlock(&instance->reset_mutex);
2068
2069 return 0;
2070 }
2071
megasas_slave_alloc(struct scsi_device * sdev)2072 static int megasas_slave_alloc(struct scsi_device *sdev)
2073 {
2074 u16 pd_index = 0;
2075 struct megasas_instance *instance ;
2076 struct MR_PRIV_DEVICE *mr_device_priv_data;
2077
2078 instance = megasas_lookup_instance(sdev->host->host_no);
2079 if (!MEGASAS_IS_LOGICAL(sdev)) {
2080 /*
2081 * Open the OS scan to the SYSTEM PD
2082 */
2083 pd_index =
2084 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2085 sdev->id;
2086 if ((instance->pd_list_not_supported ||
2087 instance->pd_list[pd_index].driveState ==
2088 MR_PD_STATE_SYSTEM)) {
2089 goto scan_target;
2090 }
2091 return -ENXIO;
2092 }
2093
2094 scan_target:
2095 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2096 GFP_KERNEL);
2097 if (!mr_device_priv_data)
2098 return -ENOMEM;
2099 sdev->hostdata = mr_device_priv_data;
2100
2101 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2102 instance->r1_ldio_hint_default);
2103 return 0;
2104 }
2105
megasas_slave_destroy(struct scsi_device * sdev)2106 static void megasas_slave_destroy(struct scsi_device *sdev)
2107 {
2108 kfree(sdev->hostdata);
2109 sdev->hostdata = NULL;
2110 }
2111
2112 /*
2113 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2114 * kill adapter
2115 * @instance: Adapter soft state
2116 *
2117 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2118 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2119 {
2120 int i;
2121 struct megasas_cmd *cmd_mfi;
2122 struct megasas_cmd_fusion *cmd_fusion;
2123 struct fusion_context *fusion = instance->ctrl_context;
2124
2125 /* Find all outstanding ioctls */
2126 if (fusion) {
2127 for (i = 0; i < instance->max_fw_cmds; i++) {
2128 cmd_fusion = fusion->cmd_list[i];
2129 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2130 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2131 if (cmd_mfi->sync_cmd &&
2132 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2133 cmd_mfi->frame->hdr.cmd_status =
2134 MFI_STAT_WRONG_STATE;
2135 megasas_complete_cmd(instance,
2136 cmd_mfi, DID_OK);
2137 }
2138 }
2139 }
2140 } else {
2141 for (i = 0; i < instance->max_fw_cmds; i++) {
2142 cmd_mfi = instance->cmd_list[i];
2143 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2144 MFI_CMD_ABORT)
2145 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2146 }
2147 }
2148 }
2149
2150
megaraid_sas_kill_hba(struct megasas_instance * instance)2151 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2152 {
2153 /* Set critical error to block I/O & ioctls in case caller didn't */
2154 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2155 /* Wait 1 second to ensure IO or ioctls in build have posted */
2156 msleep(1000);
2157 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2158 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2159 (instance->adapter_type != MFI_SERIES)) {
2160 if (!instance->requestorId) {
2161 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2162 /* Flush */
2163 readl(&instance->reg_set->doorbell);
2164 }
2165 if (instance->requestorId && instance->peerIsPresent)
2166 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2167 } else {
2168 writel(MFI_STOP_ADP,
2169 &instance->reg_set->inbound_doorbell);
2170 }
2171 /* Complete outstanding ioctls when adapter is killed */
2172 megasas_complete_outstanding_ioctls(instance);
2173 }
2174
2175 /**
2176 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2177 * restored to max value
2178 * @instance: Adapter soft state
2179 *
2180 */
2181 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2182 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2183 {
2184 unsigned long flags;
2185
2186 if (instance->flag & MEGASAS_FW_BUSY
2187 && time_after(jiffies, instance->last_time + 5 * HZ)
2188 && atomic_read(&instance->fw_outstanding) <
2189 instance->throttlequeuedepth + 1) {
2190
2191 spin_lock_irqsave(instance->host->host_lock, flags);
2192 instance->flag &= ~MEGASAS_FW_BUSY;
2193
2194 instance->host->can_queue = instance->cur_can_queue;
2195 spin_unlock_irqrestore(instance->host->host_lock, flags);
2196 }
2197 }
2198
2199 /**
2200 * megasas_complete_cmd_dpc - Returns FW's controller structure
2201 * @instance_addr: Address of adapter soft state
2202 *
2203 * Tasklet to complete cmds
2204 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2205 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2206 {
2207 u32 producer;
2208 u32 consumer;
2209 u32 context;
2210 struct megasas_cmd *cmd;
2211 struct megasas_instance *instance =
2212 (struct megasas_instance *)instance_addr;
2213 unsigned long flags;
2214
2215 /* If we have already declared adapter dead, donot complete cmds */
2216 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2217 return;
2218
2219 spin_lock_irqsave(&instance->completion_lock, flags);
2220
2221 producer = le32_to_cpu(*instance->producer);
2222 consumer = le32_to_cpu(*instance->consumer);
2223
2224 while (consumer != producer) {
2225 context = le32_to_cpu(instance->reply_queue[consumer]);
2226 if (context >= instance->max_fw_cmds) {
2227 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2228 context);
2229 BUG();
2230 }
2231
2232 cmd = instance->cmd_list[context];
2233
2234 megasas_complete_cmd(instance, cmd, DID_OK);
2235
2236 consumer++;
2237 if (consumer == (instance->max_fw_cmds + 1)) {
2238 consumer = 0;
2239 }
2240 }
2241
2242 *instance->consumer = cpu_to_le32(producer);
2243
2244 spin_unlock_irqrestore(&instance->completion_lock, flags);
2245
2246 /*
2247 * Check if we can restore can_queue
2248 */
2249 megasas_check_and_restore_queue_depth(instance);
2250 }
2251
2252 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2253
2254 /**
2255 * megasas_start_timer - Initializes sriov heartbeat timer object
2256 * @instance: Adapter soft state
2257 *
2258 */
megasas_start_timer(struct megasas_instance * instance)2259 void megasas_start_timer(struct megasas_instance *instance)
2260 {
2261 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2262
2263 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2264 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2265 add_timer(timer);
2266 }
2267
2268 static void
2269 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2270
2271 static void
2272 process_fw_state_change_wq(struct work_struct *work);
2273
megasas_do_ocr(struct megasas_instance * instance)2274 static void megasas_do_ocr(struct megasas_instance *instance)
2275 {
2276 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2277 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2278 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2279 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2280 }
2281 instance->instancet->disable_intr(instance);
2282 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2283 instance->issuepend_done = 0;
2284
2285 atomic_set(&instance->fw_outstanding, 0);
2286 megasas_internal_reset_defer_cmds(instance);
2287 process_fw_state_change_wq(&instance->work_init);
2288 }
2289
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2290 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2291 int initial)
2292 {
2293 struct megasas_cmd *cmd;
2294 struct megasas_dcmd_frame *dcmd;
2295 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2296 dma_addr_t new_affiliation_111_h;
2297 int ld, retval = 0;
2298 u8 thisVf;
2299
2300 cmd = megasas_get_cmd(instance);
2301
2302 if (!cmd) {
2303 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2304 "Failed to get cmd for scsi%d\n",
2305 instance->host->host_no);
2306 return -ENOMEM;
2307 }
2308
2309 dcmd = &cmd->frame->dcmd;
2310
2311 if (!instance->vf_affiliation_111) {
2312 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2313 "affiliation for scsi%d\n", instance->host->host_no);
2314 megasas_return_cmd(instance, cmd);
2315 return -ENOMEM;
2316 }
2317
2318 if (initial)
2319 memset(instance->vf_affiliation_111, 0,
2320 sizeof(struct MR_LD_VF_AFFILIATION_111));
2321 else {
2322 new_affiliation_111 =
2323 dma_alloc_coherent(&instance->pdev->dev,
2324 sizeof(struct MR_LD_VF_AFFILIATION_111),
2325 &new_affiliation_111_h, GFP_KERNEL);
2326 if (!new_affiliation_111) {
2327 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2328 "memory for new affiliation for scsi%d\n",
2329 instance->host->host_no);
2330 megasas_return_cmd(instance, cmd);
2331 return -ENOMEM;
2332 }
2333 }
2334
2335 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2336
2337 dcmd->cmd = MFI_CMD_DCMD;
2338 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2339 dcmd->sge_count = 1;
2340 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2341 dcmd->timeout = 0;
2342 dcmd->pad_0 = 0;
2343 dcmd->data_xfer_len =
2344 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2345 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2346
2347 if (initial)
2348 dcmd->sgl.sge32[0].phys_addr =
2349 cpu_to_le32(instance->vf_affiliation_111_h);
2350 else
2351 dcmd->sgl.sge32[0].phys_addr =
2352 cpu_to_le32(new_affiliation_111_h);
2353
2354 dcmd->sgl.sge32[0].length = cpu_to_le32(
2355 sizeof(struct MR_LD_VF_AFFILIATION_111));
2356
2357 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2358 "scsi%d\n", instance->host->host_no);
2359
2360 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2361 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2362 " failed with status 0x%x for scsi%d\n",
2363 dcmd->cmd_status, instance->host->host_no);
2364 retval = 1; /* Do a scan if we couldn't get affiliation */
2365 goto out;
2366 }
2367
2368 if (!initial) {
2369 thisVf = new_affiliation_111->thisVf;
2370 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2371 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2372 new_affiliation_111->map[ld].policy[thisVf]) {
2373 dev_warn(&instance->pdev->dev, "SR-IOV: "
2374 "Got new LD/VF affiliation for scsi%d\n",
2375 instance->host->host_no);
2376 memcpy(instance->vf_affiliation_111,
2377 new_affiliation_111,
2378 sizeof(struct MR_LD_VF_AFFILIATION_111));
2379 retval = 1;
2380 goto out;
2381 }
2382 }
2383 out:
2384 if (new_affiliation_111) {
2385 dma_free_coherent(&instance->pdev->dev,
2386 sizeof(struct MR_LD_VF_AFFILIATION_111),
2387 new_affiliation_111,
2388 new_affiliation_111_h);
2389 }
2390
2391 megasas_return_cmd(instance, cmd);
2392
2393 return retval;
2394 }
2395
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2396 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2397 int initial)
2398 {
2399 struct megasas_cmd *cmd;
2400 struct megasas_dcmd_frame *dcmd;
2401 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2402 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2403 dma_addr_t new_affiliation_h;
2404 int i, j, retval = 0, found = 0, doscan = 0;
2405 u8 thisVf;
2406
2407 cmd = megasas_get_cmd(instance);
2408
2409 if (!cmd) {
2410 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2411 "Failed to get cmd for scsi%d\n",
2412 instance->host->host_no);
2413 return -ENOMEM;
2414 }
2415
2416 dcmd = &cmd->frame->dcmd;
2417
2418 if (!instance->vf_affiliation) {
2419 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2420 "affiliation for scsi%d\n", instance->host->host_no);
2421 megasas_return_cmd(instance, cmd);
2422 return -ENOMEM;
2423 }
2424
2425 if (initial)
2426 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2427 sizeof(struct MR_LD_VF_AFFILIATION));
2428 else {
2429 new_affiliation =
2430 dma_alloc_coherent(&instance->pdev->dev,
2431 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2432 &new_affiliation_h, GFP_KERNEL);
2433 if (!new_affiliation) {
2434 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2435 "memory for new affiliation for scsi%d\n",
2436 instance->host->host_no);
2437 megasas_return_cmd(instance, cmd);
2438 return -ENOMEM;
2439 }
2440 }
2441
2442 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2443
2444 dcmd->cmd = MFI_CMD_DCMD;
2445 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2446 dcmd->sge_count = 1;
2447 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2448 dcmd->timeout = 0;
2449 dcmd->pad_0 = 0;
2450 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2451 sizeof(struct MR_LD_VF_AFFILIATION));
2452 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2453
2454 if (initial)
2455 dcmd->sgl.sge32[0].phys_addr =
2456 cpu_to_le32(instance->vf_affiliation_h);
2457 else
2458 dcmd->sgl.sge32[0].phys_addr =
2459 cpu_to_le32(new_affiliation_h);
2460
2461 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2462 sizeof(struct MR_LD_VF_AFFILIATION));
2463
2464 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2465 "scsi%d\n", instance->host->host_no);
2466
2467
2468 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2469 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2470 " failed with status 0x%x for scsi%d\n",
2471 dcmd->cmd_status, instance->host->host_no);
2472 retval = 1; /* Do a scan if we couldn't get affiliation */
2473 goto out;
2474 }
2475
2476 if (!initial) {
2477 if (!new_affiliation->ldCount) {
2478 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2479 "affiliation for passive path for scsi%d\n",
2480 instance->host->host_no);
2481 retval = 1;
2482 goto out;
2483 }
2484 newmap = new_affiliation->map;
2485 savedmap = instance->vf_affiliation->map;
2486 thisVf = new_affiliation->thisVf;
2487 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2488 found = 0;
2489 for (j = 0; j < instance->vf_affiliation->ldCount;
2490 j++) {
2491 if (newmap->ref.targetId ==
2492 savedmap->ref.targetId) {
2493 found = 1;
2494 if (newmap->policy[thisVf] !=
2495 savedmap->policy[thisVf]) {
2496 doscan = 1;
2497 goto out;
2498 }
2499 }
2500 savedmap = (struct MR_LD_VF_MAP *)
2501 ((unsigned char *)savedmap +
2502 savedmap->size);
2503 }
2504 if (!found && newmap->policy[thisVf] !=
2505 MR_LD_ACCESS_HIDDEN) {
2506 doscan = 1;
2507 goto out;
2508 }
2509 newmap = (struct MR_LD_VF_MAP *)
2510 ((unsigned char *)newmap + newmap->size);
2511 }
2512
2513 newmap = new_affiliation->map;
2514 savedmap = instance->vf_affiliation->map;
2515
2516 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2517 found = 0;
2518 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2519 if (savedmap->ref.targetId ==
2520 newmap->ref.targetId) {
2521 found = 1;
2522 if (savedmap->policy[thisVf] !=
2523 newmap->policy[thisVf]) {
2524 doscan = 1;
2525 goto out;
2526 }
2527 }
2528 newmap = (struct MR_LD_VF_MAP *)
2529 ((unsigned char *)newmap +
2530 newmap->size);
2531 }
2532 if (!found && savedmap->policy[thisVf] !=
2533 MR_LD_ACCESS_HIDDEN) {
2534 doscan = 1;
2535 goto out;
2536 }
2537 savedmap = (struct MR_LD_VF_MAP *)
2538 ((unsigned char *)savedmap +
2539 savedmap->size);
2540 }
2541 }
2542 out:
2543 if (doscan) {
2544 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2545 "affiliation for scsi%d\n", instance->host->host_no);
2546 memcpy(instance->vf_affiliation, new_affiliation,
2547 new_affiliation->size);
2548 retval = 1;
2549 }
2550
2551 if (new_affiliation)
2552 dma_free_coherent(&instance->pdev->dev,
2553 (MAX_LOGICAL_DRIVES + 1) *
2554 sizeof(struct MR_LD_VF_AFFILIATION),
2555 new_affiliation, new_affiliation_h);
2556 megasas_return_cmd(instance, cmd);
2557
2558 return retval;
2559 }
2560
2561 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2562 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2563 int initial)
2564 {
2565 int retval;
2566
2567 if (instance->PlasmaFW111)
2568 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2569 else
2570 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2571 return retval;
2572 }
2573
2574 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2575 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2576 int initial)
2577 {
2578 struct megasas_cmd *cmd;
2579 struct megasas_dcmd_frame *dcmd;
2580 int retval = 0;
2581
2582 cmd = megasas_get_cmd(instance);
2583
2584 if (!cmd) {
2585 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2586 "Failed to get cmd for scsi%d\n",
2587 instance->host->host_no);
2588 return -ENOMEM;
2589 }
2590
2591 dcmd = &cmd->frame->dcmd;
2592
2593 if (initial) {
2594 instance->hb_host_mem =
2595 dma_alloc_coherent(&instance->pdev->dev,
2596 sizeof(struct MR_CTRL_HB_HOST_MEM),
2597 &instance->hb_host_mem_h,
2598 GFP_KERNEL);
2599 if (!instance->hb_host_mem) {
2600 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2601 " memory for heartbeat host memory for scsi%d\n",
2602 instance->host->host_no);
2603 retval = -ENOMEM;
2604 goto out;
2605 }
2606 }
2607
2608 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2609
2610 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2611 dcmd->cmd = MFI_CMD_DCMD;
2612 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2613 dcmd->sge_count = 1;
2614 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2615 dcmd->timeout = 0;
2616 dcmd->pad_0 = 0;
2617 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2618 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2619
2620 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2621 sizeof(struct MR_CTRL_HB_HOST_MEM));
2622
2623 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2624 instance->host->host_no);
2625
2626 if ((instance->adapter_type != MFI_SERIES) &&
2627 !instance->mask_interrupts)
2628 retval = megasas_issue_blocked_cmd(instance, cmd,
2629 MEGASAS_ROUTINE_WAIT_TIME_VF);
2630 else
2631 retval = megasas_issue_polled(instance, cmd);
2632
2633 if (retval) {
2634 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2635 "_MEM_ALLOC DCMD %s for scsi%d\n",
2636 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2637 "timed out" : "failed", instance->host->host_no);
2638 retval = 1;
2639 }
2640
2641 out:
2642 megasas_return_cmd(instance, cmd);
2643
2644 return retval;
2645 }
2646
2647 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2648 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2649 {
2650 struct megasas_instance *instance =
2651 from_timer(instance, t, sriov_heartbeat_timer);
2652
2653 if (instance->hb_host_mem->HB.fwCounter !=
2654 instance->hb_host_mem->HB.driverCounter) {
2655 instance->hb_host_mem->HB.driverCounter =
2656 instance->hb_host_mem->HB.fwCounter;
2657 mod_timer(&instance->sriov_heartbeat_timer,
2658 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2659 } else {
2660 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2661 "completed for scsi%d\n", instance->host->host_no);
2662 schedule_work(&instance->work_init);
2663 }
2664 }
2665
2666 /**
2667 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2668 * @instance: Adapter soft state
2669 *
2670 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2671 * complete all its outstanding commands. Returns error if one or more IOs
2672 * are pending after this time period. It also marks the controller dead.
2673 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2674 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2675 {
2676 int i, sl, outstanding;
2677 u32 reset_index;
2678 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2679 unsigned long flags;
2680 struct list_head clist_local;
2681 struct megasas_cmd *reset_cmd;
2682 u32 fw_state;
2683
2684 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2685 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2686 __func__, __LINE__);
2687 return FAILED;
2688 }
2689
2690 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2691
2692 INIT_LIST_HEAD(&clist_local);
2693 spin_lock_irqsave(&instance->hba_lock, flags);
2694 list_splice_init(&instance->internal_reset_pending_q,
2695 &clist_local);
2696 spin_unlock_irqrestore(&instance->hba_lock, flags);
2697
2698 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2699 for (i = 0; i < wait_time; i++) {
2700 msleep(1000);
2701 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2702 break;
2703 }
2704
2705 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2706 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2707 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2708 return FAILED;
2709 }
2710
2711 reset_index = 0;
2712 while (!list_empty(&clist_local)) {
2713 reset_cmd = list_entry((&clist_local)->next,
2714 struct megasas_cmd, list);
2715 list_del_init(&reset_cmd->list);
2716 if (reset_cmd->scmd) {
2717 reset_cmd->scmd->result = DID_REQUEUE << 16;
2718 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2719 reset_index, reset_cmd,
2720 reset_cmd->scmd->cmnd[0]);
2721
2722 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2723 megasas_return_cmd(instance, reset_cmd);
2724 } else if (reset_cmd->sync_cmd) {
2725 dev_notice(&instance->pdev->dev, "%p synch cmds"
2726 "reset queue\n",
2727 reset_cmd);
2728
2729 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2730 instance->instancet->fire_cmd(instance,
2731 reset_cmd->frame_phys_addr,
2732 0, instance->reg_set);
2733 } else {
2734 dev_notice(&instance->pdev->dev, "%p unexpected"
2735 "cmds lst\n",
2736 reset_cmd);
2737 }
2738 reset_index++;
2739 }
2740
2741 return SUCCESS;
2742 }
2743
2744 for (i = 0; i < resetwaittime; i++) {
2745 outstanding = atomic_read(&instance->fw_outstanding);
2746
2747 if (!outstanding)
2748 break;
2749
2750 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2751 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2752 "commands to complete\n",i,outstanding);
2753 /*
2754 * Call cmd completion routine. Cmd to be
2755 * be completed directly without depending on isr.
2756 */
2757 megasas_complete_cmd_dpc((unsigned long)instance);
2758 }
2759
2760 msleep(1000);
2761 }
2762
2763 i = 0;
2764 outstanding = atomic_read(&instance->fw_outstanding);
2765 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2766
2767 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2768 goto no_outstanding;
2769
2770 if (instance->disableOnlineCtrlReset)
2771 goto kill_hba_and_failed;
2772 do {
2773 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2774 dev_info(&instance->pdev->dev,
2775 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2776 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2777 if (i == 3)
2778 goto kill_hba_and_failed;
2779 megasas_do_ocr(instance);
2780
2781 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2782 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2783 __func__, __LINE__);
2784 return FAILED;
2785 }
2786 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2787 __func__, __LINE__);
2788
2789 for (sl = 0; sl < 10; sl++)
2790 msleep(500);
2791
2792 outstanding = atomic_read(&instance->fw_outstanding);
2793
2794 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2795 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2796 goto no_outstanding;
2797 }
2798 i++;
2799 } while (i <= 3);
2800
2801 no_outstanding:
2802
2803 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2804 __func__, __LINE__);
2805 return SUCCESS;
2806
2807 kill_hba_and_failed:
2808
2809 /* Reset not supported, kill adapter */
2810 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2811 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2812 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2813 atomic_read(&instance->fw_outstanding));
2814 megasas_dump_pending_frames(instance);
2815 megaraid_sas_kill_hba(instance);
2816
2817 return FAILED;
2818 }
2819
2820 /**
2821 * megasas_generic_reset - Generic reset routine
2822 * @scmd: Mid-layer SCSI command
2823 *
2824 * This routine implements a generic reset handler for device, bus and host
2825 * reset requests. Device, bus and host specific reset handlers can use this
2826 * function after they do their specific tasks.
2827 */
megasas_generic_reset(struct scsi_cmnd * scmd)2828 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2829 {
2830 int ret_val;
2831 struct megasas_instance *instance;
2832
2833 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2834
2835 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2836 scmd->cmnd[0], scmd->retries);
2837
2838 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2839 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2840 return FAILED;
2841 }
2842
2843 ret_val = megasas_wait_for_outstanding(instance);
2844 if (ret_val == SUCCESS)
2845 dev_notice(&instance->pdev->dev, "reset successful\n");
2846 else
2847 dev_err(&instance->pdev->dev, "failed to do reset\n");
2848
2849 return ret_val;
2850 }
2851
2852 /**
2853 * megasas_reset_timer - quiesce the adapter if required
2854 * @scmd: scsi cmnd
2855 *
2856 * Sets the FW busy flag and reduces the host->can_queue if the
2857 * cmd has not been completed within the timeout period.
2858 */
2859 static enum
megasas_reset_timer(struct scsi_cmnd * scmd)2860 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2861 {
2862 struct megasas_instance *instance;
2863 unsigned long flags;
2864
2865 if (time_after(jiffies, scmd->jiffies_at_alloc +
2866 (scmd_timeout * 2) * HZ)) {
2867 return BLK_EH_DONE;
2868 }
2869
2870 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2871 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2872 /* FW is busy, throttle IO */
2873 spin_lock_irqsave(instance->host->host_lock, flags);
2874
2875 instance->host->can_queue = instance->throttlequeuedepth;
2876 instance->last_time = jiffies;
2877 instance->flag |= MEGASAS_FW_BUSY;
2878
2879 spin_unlock_irqrestore(instance->host->host_lock, flags);
2880 }
2881 return BLK_EH_RESET_TIMER;
2882 }
2883
2884 /**
2885 * megasas_dump - This function will print hexdump of provided buffer.
2886 * @buf: Buffer to be dumped
2887 * @sz: Size in bytes
2888 * @format: Different formats of dumping e.g. format=n will
2889 * cause only 'n' 32 bit words to be dumped in a single
2890 * line.
2891 */
2892 inline void
megasas_dump(void * buf,int sz,int format)2893 megasas_dump(void *buf, int sz, int format)
2894 {
2895 int i;
2896 __le32 *buf_loc = (__le32 *)buf;
2897
2898 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2899 if ((i % format) == 0) {
2900 if (i != 0)
2901 printk(KERN_CONT "\n");
2902 printk(KERN_CONT "%08x: ", (i * 4));
2903 }
2904 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2905 }
2906 printk(KERN_CONT "\n");
2907 }
2908
2909 /**
2910 * megasas_dump_reg_set - This function will print hexdump of register set
2911 * @buf: Buffer to be dumped
2912 * @sz: Size in bytes
2913 * @format: Different formats of dumping e.g. format=n will
2914 * cause only 'n' 32 bit words to be dumped in a
2915 * single line.
2916 */
2917 inline void
megasas_dump_reg_set(void __iomem * reg_set)2918 megasas_dump_reg_set(void __iomem *reg_set)
2919 {
2920 unsigned int i, sz = 256;
2921 u32 __iomem *reg = (u32 __iomem *)reg_set;
2922
2923 for (i = 0; i < (sz / sizeof(u32)); i++)
2924 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2925 }
2926
2927 /**
2928 * megasas_dump_fusion_io - This function will print key details
2929 * of SCSI IO
2930 * @scmd: SCSI command pointer of SCSI IO
2931 */
2932 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)2933 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2934 {
2935 struct megasas_cmd_fusion *cmd;
2936 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2937 struct megasas_instance *instance;
2938
2939 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2940 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2941
2942 scmd_printk(KERN_INFO, scmd,
2943 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
2944 scmd, scmd->retries, scmd->allowed);
2945 scsi_print_command(scmd);
2946
2947 if (cmd) {
2948 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2949 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
2950 scmd_printk(KERN_INFO, scmd,
2951 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
2952 req_desc->SCSIIO.RequestFlags,
2953 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
2954 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
2955
2956 printk(KERN_INFO "IO request frame:\n");
2957 megasas_dump(cmd->io_request,
2958 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
2959 printk(KERN_INFO "Chain frame:\n");
2960 megasas_dump(cmd->sg_frame,
2961 instance->max_chain_frame_sz, 8);
2962 }
2963
2964 }
2965
2966 /*
2967 * megasas_dump_sys_regs - This function will dump system registers through
2968 * sysfs.
2969 * @reg_set: Pointer to System register set.
2970 * @buf: Buffer to which output is to be written.
2971 * @return: Number of bytes written to buffer.
2972 */
2973 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)2974 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
2975 {
2976 unsigned int i, sz = 256;
2977 int bytes_wrote = 0;
2978 char *loc = (char *)buf;
2979 u32 __iomem *reg = (u32 __iomem *)reg_set;
2980
2981 for (i = 0; i < sz / sizeof(u32); i++) {
2982 bytes_wrote += snprintf(loc + bytes_wrote, PAGE_SIZE,
2983 "%08x: %08x\n", (i * 4),
2984 readl(®[i]));
2985 }
2986 return bytes_wrote;
2987 }
2988
2989 /**
2990 * megasas_reset_bus_host - Bus & host reset handler entry point
2991 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)2992 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2993 {
2994 int ret;
2995 struct megasas_instance *instance;
2996
2997 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2998
2999 scmd_printk(KERN_INFO, scmd,
3000 "OCR is requested due to IO timeout!!\n");
3001
3002 scmd_printk(KERN_INFO, scmd,
3003 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3004 scmd->device->host->shost_state,
3005 scsi_host_busy(scmd->device->host),
3006 atomic_read(&instance->fw_outstanding));
3007 /*
3008 * First wait for all commands to complete
3009 */
3010 if (instance->adapter_type == MFI_SERIES) {
3011 ret = megasas_generic_reset(scmd);
3012 } else {
3013 megasas_dump_fusion_io(scmd);
3014 ret = megasas_reset_fusion(scmd->device->host,
3015 SCSIIO_TIMEOUT_OCR);
3016 }
3017
3018 return ret;
3019 }
3020
3021 /**
3022 * megasas_task_abort - Issues task abort request to firmware
3023 * (supported only for fusion adapters)
3024 * @scmd: SCSI command pointer
3025 */
megasas_task_abort(struct scsi_cmnd * scmd)3026 static int megasas_task_abort(struct scsi_cmnd *scmd)
3027 {
3028 int ret;
3029 struct megasas_instance *instance;
3030
3031 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3032
3033 if (instance->adapter_type != MFI_SERIES)
3034 ret = megasas_task_abort_fusion(scmd);
3035 else {
3036 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3037 ret = FAILED;
3038 }
3039
3040 return ret;
3041 }
3042
3043 /**
3044 * megasas_reset_target: Issues target reset request to firmware
3045 * (supported only for fusion adapters)
3046 * @scmd: SCSI command pointer
3047 */
megasas_reset_target(struct scsi_cmnd * scmd)3048 static int megasas_reset_target(struct scsi_cmnd *scmd)
3049 {
3050 int ret;
3051 struct megasas_instance *instance;
3052
3053 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3054
3055 if (instance->adapter_type != MFI_SERIES)
3056 ret = megasas_reset_target_fusion(scmd);
3057 else {
3058 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3059 ret = FAILED;
3060 }
3061
3062 return ret;
3063 }
3064
3065 /**
3066 * megasas_bios_param - Returns disk geometry for a disk
3067 * @sdev: device handle
3068 * @bdev: block device
3069 * @capacity: drive capacity
3070 * @geom: geometry parameters
3071 */
3072 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3073 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3074 sector_t capacity, int geom[])
3075 {
3076 int heads;
3077 int sectors;
3078 sector_t cylinders;
3079 unsigned long tmp;
3080
3081 /* Default heads (64) & sectors (32) */
3082 heads = 64;
3083 sectors = 32;
3084
3085 tmp = heads * sectors;
3086 cylinders = capacity;
3087
3088 sector_div(cylinders, tmp);
3089
3090 /*
3091 * Handle extended translation size for logical drives > 1Gb
3092 */
3093
3094 if (capacity >= 0x200000) {
3095 heads = 255;
3096 sectors = 63;
3097 tmp = heads*sectors;
3098 cylinders = capacity;
3099 sector_div(cylinders, tmp);
3100 }
3101
3102 geom[0] = heads;
3103 geom[1] = sectors;
3104 geom[2] = cylinders;
3105
3106 return 0;
3107 }
3108
3109 static void megasas_aen_polling(struct work_struct *work);
3110
3111 /**
3112 * megasas_service_aen - Processes an event notification
3113 * @instance: Adapter soft state
3114 * @cmd: AEN command completed by the ISR
3115 *
3116 * For AEN, driver sends a command down to FW that is held by the FW till an
3117 * event occurs. When an event of interest occurs, FW completes the command
3118 * that it was previously holding.
3119 *
3120 * This routines sends SIGIO signal to processes that have registered with the
3121 * driver for AEN.
3122 */
3123 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3124 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3125 {
3126 unsigned long flags;
3127
3128 /*
3129 * Don't signal app if it is just an aborted previously registered aen
3130 */
3131 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3132 spin_lock_irqsave(&poll_aen_lock, flags);
3133 megasas_poll_wait_aen = 1;
3134 spin_unlock_irqrestore(&poll_aen_lock, flags);
3135 wake_up(&megasas_poll_wait);
3136 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3137 }
3138 else
3139 cmd->abort_aen = 0;
3140
3141 instance->aen_cmd = NULL;
3142
3143 megasas_return_cmd(instance, cmd);
3144
3145 if ((instance->unload == 0) &&
3146 ((instance->issuepend_done == 1))) {
3147 struct megasas_aen_event *ev;
3148
3149 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3150 if (!ev) {
3151 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3152 } else {
3153 ev->instance = instance;
3154 instance->ev = ev;
3155 INIT_DELAYED_WORK(&ev->hotplug_work,
3156 megasas_aen_polling);
3157 schedule_delayed_work(&ev->hotplug_work, 0);
3158 }
3159 }
3160 }
3161
3162 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3163 fw_crash_buffer_store(struct device *cdev,
3164 struct device_attribute *attr, const char *buf, size_t count)
3165 {
3166 struct Scsi_Host *shost = class_to_shost(cdev);
3167 struct megasas_instance *instance =
3168 (struct megasas_instance *) shost->hostdata;
3169 int val = 0;
3170 unsigned long flags;
3171
3172 if (kstrtoint(buf, 0, &val) != 0)
3173 return -EINVAL;
3174
3175 spin_lock_irqsave(&instance->crashdump_lock, flags);
3176 instance->fw_crash_buffer_offset = val;
3177 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3178 return strlen(buf);
3179 }
3180
3181 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3182 fw_crash_buffer_show(struct device *cdev,
3183 struct device_attribute *attr, char *buf)
3184 {
3185 struct Scsi_Host *shost = class_to_shost(cdev);
3186 struct megasas_instance *instance =
3187 (struct megasas_instance *) shost->hostdata;
3188 u32 size;
3189 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3190 unsigned long chunk_left_bytes;
3191 unsigned long src_addr;
3192 unsigned long flags;
3193 u32 buff_offset;
3194
3195 spin_lock_irqsave(&instance->crashdump_lock, flags);
3196 buff_offset = instance->fw_crash_buffer_offset;
3197 if (!instance->crash_dump_buf &&
3198 !((instance->fw_crash_state == AVAILABLE) ||
3199 (instance->fw_crash_state == COPYING))) {
3200 dev_err(&instance->pdev->dev,
3201 "Firmware crash dump is not available\n");
3202 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3203 return -EINVAL;
3204 }
3205
3206 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3207 dev_err(&instance->pdev->dev,
3208 "Firmware crash dump offset is out of range\n");
3209 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3210 return 0;
3211 }
3212
3213 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3214 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3215 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3216 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3217
3218 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3219 (buff_offset % dmachunk);
3220 memcpy(buf, (void *)src_addr, size);
3221 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3222
3223 return size;
3224 }
3225
3226 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3227 fw_crash_buffer_size_show(struct device *cdev,
3228 struct device_attribute *attr, char *buf)
3229 {
3230 struct Scsi_Host *shost = class_to_shost(cdev);
3231 struct megasas_instance *instance =
3232 (struct megasas_instance *) shost->hostdata;
3233
3234 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3235 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3236 }
3237
3238 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3239 fw_crash_state_store(struct device *cdev,
3240 struct device_attribute *attr, const char *buf, size_t count)
3241 {
3242 struct Scsi_Host *shost = class_to_shost(cdev);
3243 struct megasas_instance *instance =
3244 (struct megasas_instance *) shost->hostdata;
3245 int val = 0;
3246 unsigned long flags;
3247
3248 if (kstrtoint(buf, 0, &val) != 0)
3249 return -EINVAL;
3250
3251 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3252 dev_err(&instance->pdev->dev, "application updates invalid "
3253 "firmware crash state\n");
3254 return -EINVAL;
3255 }
3256
3257 instance->fw_crash_state = val;
3258
3259 if ((val == COPIED) || (val == COPY_ERROR)) {
3260 spin_lock_irqsave(&instance->crashdump_lock, flags);
3261 megasas_free_host_crash_buffer(instance);
3262 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3263 if (val == COPY_ERROR)
3264 dev_info(&instance->pdev->dev, "application failed to "
3265 "copy Firmware crash dump\n");
3266 else
3267 dev_info(&instance->pdev->dev, "Firmware crash dump "
3268 "copied successfully\n");
3269 }
3270 return strlen(buf);
3271 }
3272
3273 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3274 fw_crash_state_show(struct device *cdev,
3275 struct device_attribute *attr, char *buf)
3276 {
3277 struct Scsi_Host *shost = class_to_shost(cdev);
3278 struct megasas_instance *instance =
3279 (struct megasas_instance *) shost->hostdata;
3280
3281 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3282 }
3283
3284 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3285 page_size_show(struct device *cdev,
3286 struct device_attribute *attr, char *buf)
3287 {
3288 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3289 }
3290
3291 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3292 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3293 char *buf)
3294 {
3295 struct Scsi_Host *shost = class_to_shost(cdev);
3296 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3297
3298 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3299 }
3300
3301 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3302 fw_cmds_outstanding_show(struct device *cdev,
3303 struct device_attribute *attr, char *buf)
3304 {
3305 struct Scsi_Host *shost = class_to_shost(cdev);
3306 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3307
3308 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3309 }
3310
3311 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3312 enable_sdev_max_qd_show(struct device *cdev,
3313 struct device_attribute *attr, char *buf)
3314 {
3315 struct Scsi_Host *shost = class_to_shost(cdev);
3316 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3317
3318 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3319 }
3320
3321 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3322 enable_sdev_max_qd_store(struct device *cdev,
3323 struct device_attribute *attr, const char *buf, size_t count)
3324 {
3325 struct Scsi_Host *shost = class_to_shost(cdev);
3326 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3327 u32 val = 0;
3328 bool is_target_prop;
3329 int ret_target_prop = DCMD_FAILED;
3330 struct scsi_device *sdev;
3331
3332 if (kstrtou32(buf, 0, &val) != 0) {
3333 pr_err("megasas: could not set enable_sdev_max_qd\n");
3334 return -EINVAL;
3335 }
3336
3337 mutex_lock(&instance->reset_mutex);
3338 if (val)
3339 instance->enable_sdev_max_qd = true;
3340 else
3341 instance->enable_sdev_max_qd = false;
3342
3343 shost_for_each_device(sdev, shost) {
3344 ret_target_prop = megasas_get_target_prop(instance, sdev);
3345 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3346 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3347 }
3348 mutex_unlock(&instance->reset_mutex);
3349
3350 return strlen(buf);
3351 }
3352
3353 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3354 dump_system_regs_show(struct device *cdev,
3355 struct device_attribute *attr, char *buf)
3356 {
3357 struct Scsi_Host *shost = class_to_shost(cdev);
3358 struct megasas_instance *instance =
3359 (struct megasas_instance *)shost->hostdata;
3360
3361 return megasas_dump_sys_regs(instance->reg_set, buf);
3362 }
3363
3364 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3365 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3366 char *buf)
3367 {
3368 struct Scsi_Host *shost = class_to_shost(cdev);
3369 struct megasas_instance *instance =
3370 (struct megasas_instance *)shost->hostdata;
3371
3372 return snprintf(buf, PAGE_SIZE, "%ld\n",
3373 (unsigned long)instance->map_id);
3374 }
3375
3376 static DEVICE_ATTR_RW(fw_crash_buffer);
3377 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3378 static DEVICE_ATTR_RW(fw_crash_state);
3379 static DEVICE_ATTR_RO(page_size);
3380 static DEVICE_ATTR_RO(ldio_outstanding);
3381 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3382 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3383 static DEVICE_ATTR_RO(dump_system_regs);
3384 static DEVICE_ATTR_RO(raid_map_id);
3385
3386 static struct device_attribute *megaraid_host_attrs[] = {
3387 &dev_attr_fw_crash_buffer_size,
3388 &dev_attr_fw_crash_buffer,
3389 &dev_attr_fw_crash_state,
3390 &dev_attr_page_size,
3391 &dev_attr_ldio_outstanding,
3392 &dev_attr_fw_cmds_outstanding,
3393 &dev_attr_enable_sdev_max_qd,
3394 &dev_attr_dump_system_regs,
3395 &dev_attr_raid_map_id,
3396 NULL,
3397 };
3398
3399 /*
3400 * Scsi host template for megaraid_sas driver
3401 */
3402 static struct scsi_host_template megasas_template = {
3403
3404 .module = THIS_MODULE,
3405 .name = "Avago SAS based MegaRAID driver",
3406 .proc_name = "megaraid_sas",
3407 .slave_configure = megasas_slave_configure,
3408 .slave_alloc = megasas_slave_alloc,
3409 .slave_destroy = megasas_slave_destroy,
3410 .queuecommand = megasas_queue_command,
3411 .eh_target_reset_handler = megasas_reset_target,
3412 .eh_abort_handler = megasas_task_abort,
3413 .eh_host_reset_handler = megasas_reset_bus_host,
3414 .eh_timed_out = megasas_reset_timer,
3415 .shost_attrs = megaraid_host_attrs,
3416 .bios_param = megasas_bios_param,
3417 .change_queue_depth = scsi_change_queue_depth,
3418 .max_segment_size = 0xffffffff,
3419 .no_write_same = 1,
3420 };
3421
3422 /**
3423 * megasas_complete_int_cmd - Completes an internal command
3424 * @instance: Adapter soft state
3425 * @cmd: Command to be completed
3426 *
3427 * The megasas_issue_blocked_cmd() function waits for a command to complete
3428 * after it issues a command. This function wakes up that waiting routine by
3429 * calling wake_up() on the wait queue.
3430 */
3431 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3432 megasas_complete_int_cmd(struct megasas_instance *instance,
3433 struct megasas_cmd *cmd)
3434 {
3435 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3436 wake_up(&instance->int_cmd_wait_q);
3437 }
3438
3439 /**
3440 * megasas_complete_abort - Completes aborting a command
3441 * @instance: Adapter soft state
3442 * @cmd: Cmd that was issued to abort another cmd
3443 *
3444 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3445 * after it issues an abort on a previously issued command. This function
3446 * wakes up all functions waiting on the same wait queue.
3447 */
3448 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3449 megasas_complete_abort(struct megasas_instance *instance,
3450 struct megasas_cmd *cmd)
3451 {
3452 if (cmd->sync_cmd) {
3453 cmd->sync_cmd = 0;
3454 cmd->cmd_status_drv = 0;
3455 wake_up(&instance->abort_cmd_wait_q);
3456 }
3457 }
3458
3459 /**
3460 * megasas_complete_cmd - Completes a command
3461 * @instance: Adapter soft state
3462 * @cmd: Command to be completed
3463 * @alt_status: If non-zero, use this value as status to
3464 * SCSI mid-layer instead of the value returned
3465 * by the FW. This should be used if caller wants
3466 * an alternate status (as in the case of aborted
3467 * commands)
3468 */
3469 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3470 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3471 u8 alt_status)
3472 {
3473 int exception = 0;
3474 struct megasas_header *hdr = &cmd->frame->hdr;
3475 unsigned long flags;
3476 struct fusion_context *fusion = instance->ctrl_context;
3477 u32 opcode, status;
3478
3479 /* flag for the retry reset */
3480 cmd->retry_for_fw_reset = 0;
3481
3482 if (cmd->scmd)
3483 cmd->scmd->SCp.ptr = NULL;
3484
3485 switch (hdr->cmd) {
3486 case MFI_CMD_INVALID:
3487 /* Some older 1068 controller FW may keep a pended
3488 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3489 when booting the kdump kernel. Ignore this command to
3490 prevent a kernel panic on shutdown of the kdump kernel. */
3491 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3492 "completed\n");
3493 dev_warn(&instance->pdev->dev, "If you have a controller "
3494 "other than PERC5, please upgrade your firmware\n");
3495 break;
3496 case MFI_CMD_PD_SCSI_IO:
3497 case MFI_CMD_LD_SCSI_IO:
3498
3499 /*
3500 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3501 * issued either through an IO path or an IOCTL path. If it
3502 * was via IOCTL, we will send it to internal completion.
3503 */
3504 if (cmd->sync_cmd) {
3505 cmd->sync_cmd = 0;
3506 megasas_complete_int_cmd(instance, cmd);
3507 break;
3508 }
3509 /* fall through */
3510
3511 case MFI_CMD_LD_READ:
3512 case MFI_CMD_LD_WRITE:
3513
3514 if (alt_status) {
3515 cmd->scmd->result = alt_status << 16;
3516 exception = 1;
3517 }
3518
3519 if (exception) {
3520
3521 atomic_dec(&instance->fw_outstanding);
3522
3523 scsi_dma_unmap(cmd->scmd);
3524 cmd->scmd->scsi_done(cmd->scmd);
3525 megasas_return_cmd(instance, cmd);
3526
3527 break;
3528 }
3529
3530 switch (hdr->cmd_status) {
3531
3532 case MFI_STAT_OK:
3533 cmd->scmd->result = DID_OK << 16;
3534 break;
3535
3536 case MFI_STAT_SCSI_IO_FAILED:
3537 case MFI_STAT_LD_INIT_IN_PROGRESS:
3538 cmd->scmd->result =
3539 (DID_ERROR << 16) | hdr->scsi_status;
3540 break;
3541
3542 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3543
3544 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3545
3546 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3547 memset(cmd->scmd->sense_buffer, 0,
3548 SCSI_SENSE_BUFFERSIZE);
3549 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3550 hdr->sense_len);
3551
3552 cmd->scmd->result |= DRIVER_SENSE << 24;
3553 }
3554
3555 break;
3556
3557 case MFI_STAT_LD_OFFLINE:
3558 case MFI_STAT_DEVICE_NOT_FOUND:
3559 cmd->scmd->result = DID_BAD_TARGET << 16;
3560 break;
3561
3562 default:
3563 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3564 hdr->cmd_status);
3565 cmd->scmd->result = DID_ERROR << 16;
3566 break;
3567 }
3568
3569 atomic_dec(&instance->fw_outstanding);
3570
3571 scsi_dma_unmap(cmd->scmd);
3572 cmd->scmd->scsi_done(cmd->scmd);
3573 megasas_return_cmd(instance, cmd);
3574
3575 break;
3576
3577 case MFI_CMD_SMP:
3578 case MFI_CMD_STP:
3579 case MFI_CMD_NVME:
3580 case MFI_CMD_TOOLBOX:
3581 megasas_complete_int_cmd(instance, cmd);
3582 break;
3583
3584 case MFI_CMD_DCMD:
3585 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3586 /* Check for LD map update */
3587 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3588 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3589 fusion->fast_path_io = 0;
3590 spin_lock_irqsave(instance->host->host_lock, flags);
3591 status = cmd->frame->hdr.cmd_status;
3592 instance->map_update_cmd = NULL;
3593 if (status != MFI_STAT_OK) {
3594 if (status != MFI_STAT_NOT_FOUND)
3595 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3596 cmd->frame->hdr.cmd_status);
3597 else {
3598 megasas_return_cmd(instance, cmd);
3599 spin_unlock_irqrestore(
3600 instance->host->host_lock,
3601 flags);
3602 break;
3603 }
3604 }
3605
3606 megasas_return_cmd(instance, cmd);
3607
3608 /*
3609 * Set fast path IO to ZERO.
3610 * Validate Map will set proper value.
3611 * Meanwhile all IOs will go as LD IO.
3612 */
3613 if (status == MFI_STAT_OK &&
3614 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3615 instance->map_id++;
3616 fusion->fast_path_io = 1;
3617 } else {
3618 fusion->fast_path_io = 0;
3619 }
3620
3621 megasas_sync_map_info(instance);
3622 spin_unlock_irqrestore(instance->host->host_lock,
3623 flags);
3624 break;
3625 }
3626 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3627 opcode == MR_DCMD_CTRL_EVENT_GET) {
3628 spin_lock_irqsave(&poll_aen_lock, flags);
3629 megasas_poll_wait_aen = 0;
3630 spin_unlock_irqrestore(&poll_aen_lock, flags);
3631 }
3632
3633 /* FW has an updated PD sequence */
3634 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3635 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3636
3637 spin_lock_irqsave(instance->host->host_lock, flags);
3638 status = cmd->frame->hdr.cmd_status;
3639 instance->jbod_seq_cmd = NULL;
3640 megasas_return_cmd(instance, cmd);
3641
3642 if (status == MFI_STAT_OK) {
3643 instance->pd_seq_map_id++;
3644 /* Re-register a pd sync seq num cmd */
3645 if (megasas_sync_pd_seq_num(instance, true))
3646 instance->use_seqnum_jbod_fp = false;
3647 } else
3648 instance->use_seqnum_jbod_fp = false;
3649
3650 spin_unlock_irqrestore(instance->host->host_lock, flags);
3651 break;
3652 }
3653
3654 /*
3655 * See if got an event notification
3656 */
3657 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3658 megasas_service_aen(instance, cmd);
3659 else
3660 megasas_complete_int_cmd(instance, cmd);
3661
3662 break;
3663
3664 case MFI_CMD_ABORT:
3665 /*
3666 * Cmd issued to abort another cmd returned
3667 */
3668 megasas_complete_abort(instance, cmd);
3669 break;
3670
3671 default:
3672 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3673 hdr->cmd);
3674 megasas_complete_int_cmd(instance, cmd);
3675 break;
3676 }
3677 }
3678
3679 /**
3680 * megasas_issue_pending_cmds_again - issue all pending cmds
3681 * in FW again because of the fw reset
3682 * @instance: Adapter soft state
3683 */
3684 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3685 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3686 {
3687 struct megasas_cmd *cmd;
3688 struct list_head clist_local;
3689 union megasas_evt_class_locale class_locale;
3690 unsigned long flags;
3691 u32 seq_num;
3692
3693 INIT_LIST_HEAD(&clist_local);
3694 spin_lock_irqsave(&instance->hba_lock, flags);
3695 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3696 spin_unlock_irqrestore(&instance->hba_lock, flags);
3697
3698 while (!list_empty(&clist_local)) {
3699 cmd = list_entry((&clist_local)->next,
3700 struct megasas_cmd, list);
3701 list_del_init(&cmd->list);
3702
3703 if (cmd->sync_cmd || cmd->scmd) {
3704 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3705 "detected to be pending while HBA reset\n",
3706 cmd, cmd->scmd, cmd->sync_cmd);
3707
3708 cmd->retry_for_fw_reset++;
3709
3710 if (cmd->retry_for_fw_reset == 3) {
3711 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3712 "was tried multiple times during reset."
3713 "Shutting down the HBA\n",
3714 cmd, cmd->scmd, cmd->sync_cmd);
3715 instance->instancet->disable_intr(instance);
3716 atomic_set(&instance->fw_reset_no_pci_access, 1);
3717 megaraid_sas_kill_hba(instance);
3718 return;
3719 }
3720 }
3721
3722 if (cmd->sync_cmd == 1) {
3723 if (cmd->scmd) {
3724 dev_notice(&instance->pdev->dev, "unexpected"
3725 "cmd attached to internal command!\n");
3726 }
3727 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3728 "on the internal reset queue,"
3729 "issue it again.\n", cmd);
3730 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3731 instance->instancet->fire_cmd(instance,
3732 cmd->frame_phys_addr,
3733 0, instance->reg_set);
3734 } else if (cmd->scmd) {
3735 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3736 "detected on the internal queue, issue again.\n",
3737 cmd, cmd->scmd->cmnd[0]);
3738
3739 atomic_inc(&instance->fw_outstanding);
3740 instance->instancet->fire_cmd(instance,
3741 cmd->frame_phys_addr,
3742 cmd->frame_count-1, instance->reg_set);
3743 } else {
3744 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3745 "internal reset defer list while re-issue!!\n",
3746 cmd);
3747 }
3748 }
3749
3750 if (instance->aen_cmd) {
3751 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3752 megasas_return_cmd(instance, instance->aen_cmd);
3753
3754 instance->aen_cmd = NULL;
3755 }
3756
3757 /*
3758 * Initiate AEN (Asynchronous Event Notification)
3759 */
3760 seq_num = instance->last_seq_num;
3761 class_locale.members.reserved = 0;
3762 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3763 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3764
3765 megasas_register_aen(instance, seq_num, class_locale.word);
3766 }
3767
3768 /**
3769 * Move the internal reset pending commands to a deferred queue.
3770 *
3771 * We move the commands pending at internal reset time to a
3772 * pending queue. This queue would be flushed after successful
3773 * completion of the internal reset sequence. if the internal reset
3774 * did not complete in time, the kernel reset handler would flush
3775 * these commands.
3776 **/
3777 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3778 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3779 {
3780 struct megasas_cmd *cmd;
3781 int i;
3782 u16 max_cmd = instance->max_fw_cmds;
3783 u32 defer_index;
3784 unsigned long flags;
3785
3786 defer_index = 0;
3787 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3788 for (i = 0; i < max_cmd; i++) {
3789 cmd = instance->cmd_list[i];
3790 if (cmd->sync_cmd == 1 || cmd->scmd) {
3791 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3792 "on the defer queue as internal\n",
3793 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3794
3795 if (!list_empty(&cmd->list)) {
3796 dev_notice(&instance->pdev->dev, "ERROR while"
3797 " moving this cmd:%p, %d %p, it was"
3798 "discovered on some list?\n",
3799 cmd, cmd->sync_cmd, cmd->scmd);
3800
3801 list_del_init(&cmd->list);
3802 }
3803 defer_index++;
3804 list_add_tail(&cmd->list,
3805 &instance->internal_reset_pending_q);
3806 }
3807 }
3808 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3809 }
3810
3811
3812 static void
process_fw_state_change_wq(struct work_struct * work)3813 process_fw_state_change_wq(struct work_struct *work)
3814 {
3815 struct megasas_instance *instance =
3816 container_of(work, struct megasas_instance, work_init);
3817 u32 wait;
3818 unsigned long flags;
3819
3820 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3821 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3822 atomic_read(&instance->adprecovery));
3823 return ;
3824 }
3825
3826 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3827 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3828 "state, restarting it...\n");
3829
3830 instance->instancet->disable_intr(instance);
3831 atomic_set(&instance->fw_outstanding, 0);
3832
3833 atomic_set(&instance->fw_reset_no_pci_access, 1);
3834 instance->instancet->adp_reset(instance, instance->reg_set);
3835 atomic_set(&instance->fw_reset_no_pci_access, 0);
3836
3837 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3838 "initiating next stage...\n");
3839
3840 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3841 "state 2 starting...\n");
3842
3843 /* waiting for about 20 second before start the second init */
3844 for (wait = 0; wait < 30; wait++) {
3845 msleep(1000);
3846 }
3847
3848 if (megasas_transition_to_ready(instance, 1)) {
3849 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3850
3851 atomic_set(&instance->fw_reset_no_pci_access, 1);
3852 megaraid_sas_kill_hba(instance);
3853 return ;
3854 }
3855
3856 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3857 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3858 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3859 ) {
3860 *instance->consumer = *instance->producer;
3861 } else {
3862 *instance->consumer = 0;
3863 *instance->producer = 0;
3864 }
3865
3866 megasas_issue_init_mfi(instance);
3867
3868 spin_lock_irqsave(&instance->hba_lock, flags);
3869 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3870 spin_unlock_irqrestore(&instance->hba_lock, flags);
3871 instance->instancet->enable_intr(instance);
3872
3873 megasas_issue_pending_cmds_again(instance);
3874 instance->issuepend_done = 1;
3875 }
3876 }
3877
3878 /**
3879 * megasas_deplete_reply_queue - Processes all completed commands
3880 * @instance: Adapter soft state
3881 * @alt_status: Alternate status to be returned to
3882 * SCSI mid-layer instead of the status
3883 * returned by the FW
3884 * Note: this must be called with hba lock held
3885 */
3886 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)3887 megasas_deplete_reply_queue(struct megasas_instance *instance,
3888 u8 alt_status)
3889 {
3890 u32 mfiStatus;
3891 u32 fw_state;
3892
3893 if ((mfiStatus = instance->instancet->check_reset(instance,
3894 instance->reg_set)) == 1) {
3895 return IRQ_HANDLED;
3896 }
3897
3898 mfiStatus = instance->instancet->clear_intr(instance);
3899 if (mfiStatus == 0) {
3900 /* Hardware may not set outbound_intr_status in MSI-X mode */
3901 if (!instance->msix_vectors)
3902 return IRQ_NONE;
3903 }
3904
3905 instance->mfiStatus = mfiStatus;
3906
3907 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3908 fw_state = instance->instancet->read_fw_status_reg(
3909 instance) & MFI_STATE_MASK;
3910
3911 if (fw_state != MFI_STATE_FAULT) {
3912 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3913 fw_state);
3914 }
3915
3916 if ((fw_state == MFI_STATE_FAULT) &&
3917 (instance->disableOnlineCtrlReset == 0)) {
3918 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3919
3920 if ((instance->pdev->device ==
3921 PCI_DEVICE_ID_LSI_SAS1064R) ||
3922 (instance->pdev->device ==
3923 PCI_DEVICE_ID_DELL_PERC5) ||
3924 (instance->pdev->device ==
3925 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3926
3927 *instance->consumer =
3928 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3929 }
3930
3931
3932 instance->instancet->disable_intr(instance);
3933 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3934 instance->issuepend_done = 0;
3935
3936 atomic_set(&instance->fw_outstanding, 0);
3937 megasas_internal_reset_defer_cmds(instance);
3938
3939 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3940 fw_state, atomic_read(&instance->adprecovery));
3941
3942 schedule_work(&instance->work_init);
3943 return IRQ_HANDLED;
3944
3945 } else {
3946 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3947 fw_state, instance->disableOnlineCtrlReset);
3948 }
3949 }
3950
3951 tasklet_schedule(&instance->isr_tasklet);
3952 return IRQ_HANDLED;
3953 }
3954 /**
3955 * megasas_isr - isr entry point
3956 */
megasas_isr(int irq,void * devp)3957 static irqreturn_t megasas_isr(int irq, void *devp)
3958 {
3959 struct megasas_irq_context *irq_context = devp;
3960 struct megasas_instance *instance = irq_context->instance;
3961 unsigned long flags;
3962 irqreturn_t rc;
3963
3964 if (atomic_read(&instance->fw_reset_no_pci_access))
3965 return IRQ_HANDLED;
3966
3967 spin_lock_irqsave(&instance->hba_lock, flags);
3968 rc = megasas_deplete_reply_queue(instance, DID_OK);
3969 spin_unlock_irqrestore(&instance->hba_lock, flags);
3970
3971 return rc;
3972 }
3973
3974 /**
3975 * megasas_transition_to_ready - Move the FW to READY state
3976 * @instance: Adapter soft state
3977 *
3978 * During the initialization, FW passes can potentially be in any one of
3979 * several possible states. If the FW in operational, waiting-for-handshake
3980 * states, driver must take steps to bring it to ready state. Otherwise, it
3981 * has to wait for the ready state.
3982 */
3983 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)3984 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3985 {
3986 int i;
3987 u8 max_wait;
3988 u32 fw_state;
3989 u32 abs_state, curr_abs_state;
3990
3991 abs_state = instance->instancet->read_fw_status_reg(instance);
3992 fw_state = abs_state & MFI_STATE_MASK;
3993
3994 if (fw_state != MFI_STATE_READY)
3995 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3996 " state\n");
3997
3998 while (fw_state != MFI_STATE_READY) {
3999
4000 switch (fw_state) {
4001
4002 case MFI_STATE_FAULT:
4003 dev_printk(KERN_ERR, &instance->pdev->dev,
4004 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4005 abs_state & MFI_STATE_FAULT_CODE,
4006 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4007 if (ocr) {
4008 max_wait = MEGASAS_RESET_WAIT_TIME;
4009 break;
4010 } else {
4011 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4012 megasas_dump_reg_set(instance->reg_set);
4013 return -ENODEV;
4014 }
4015
4016 case MFI_STATE_WAIT_HANDSHAKE:
4017 /*
4018 * Set the CLR bit in inbound doorbell
4019 */
4020 if ((instance->pdev->device ==
4021 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4022 (instance->pdev->device ==
4023 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4024 (instance->adapter_type != MFI_SERIES))
4025 writel(
4026 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4027 &instance->reg_set->doorbell);
4028 else
4029 writel(
4030 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4031 &instance->reg_set->inbound_doorbell);
4032
4033 max_wait = MEGASAS_RESET_WAIT_TIME;
4034 break;
4035
4036 case MFI_STATE_BOOT_MESSAGE_PENDING:
4037 if ((instance->pdev->device ==
4038 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4039 (instance->pdev->device ==
4040 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4041 (instance->adapter_type != MFI_SERIES))
4042 writel(MFI_INIT_HOTPLUG,
4043 &instance->reg_set->doorbell);
4044 else
4045 writel(MFI_INIT_HOTPLUG,
4046 &instance->reg_set->inbound_doorbell);
4047
4048 max_wait = MEGASAS_RESET_WAIT_TIME;
4049 break;
4050
4051 case MFI_STATE_OPERATIONAL:
4052 /*
4053 * Bring it to READY state; assuming max wait 10 secs
4054 */
4055 instance->instancet->disable_intr(instance);
4056 if ((instance->pdev->device ==
4057 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4058 (instance->pdev->device ==
4059 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4060 (instance->adapter_type != MFI_SERIES)) {
4061 writel(MFI_RESET_FLAGS,
4062 &instance->reg_set->doorbell);
4063
4064 if (instance->adapter_type != MFI_SERIES) {
4065 for (i = 0; i < (10 * 1000); i += 20) {
4066 if (megasas_readl(
4067 instance,
4068 &instance->
4069 reg_set->
4070 doorbell) & 1)
4071 msleep(20);
4072 else
4073 break;
4074 }
4075 }
4076 } else
4077 writel(MFI_RESET_FLAGS,
4078 &instance->reg_set->inbound_doorbell);
4079
4080 max_wait = MEGASAS_RESET_WAIT_TIME;
4081 break;
4082
4083 case MFI_STATE_UNDEFINED:
4084 /*
4085 * This state should not last for more than 2 seconds
4086 */
4087 max_wait = MEGASAS_RESET_WAIT_TIME;
4088 break;
4089
4090 case MFI_STATE_BB_INIT:
4091 max_wait = MEGASAS_RESET_WAIT_TIME;
4092 break;
4093
4094 case MFI_STATE_FW_INIT:
4095 max_wait = MEGASAS_RESET_WAIT_TIME;
4096 break;
4097
4098 case MFI_STATE_FW_INIT_2:
4099 max_wait = MEGASAS_RESET_WAIT_TIME;
4100 break;
4101
4102 case MFI_STATE_DEVICE_SCAN:
4103 max_wait = MEGASAS_RESET_WAIT_TIME;
4104 break;
4105
4106 case MFI_STATE_FLUSH_CACHE:
4107 max_wait = MEGASAS_RESET_WAIT_TIME;
4108 break;
4109
4110 default:
4111 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4112 fw_state);
4113 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4114 megasas_dump_reg_set(instance->reg_set);
4115 return -ENODEV;
4116 }
4117
4118 /*
4119 * The cur_state should not last for more than max_wait secs
4120 */
4121 for (i = 0; i < max_wait * 50; i++) {
4122 curr_abs_state = instance->instancet->
4123 read_fw_status_reg(instance);
4124
4125 if (abs_state == curr_abs_state) {
4126 msleep(20);
4127 } else
4128 break;
4129 }
4130
4131 /*
4132 * Return error if fw_state hasn't changed after max_wait
4133 */
4134 if (curr_abs_state == abs_state) {
4135 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4136 "in %d secs\n", fw_state, max_wait);
4137 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4138 megasas_dump_reg_set(instance->reg_set);
4139 return -ENODEV;
4140 }
4141
4142 abs_state = curr_abs_state;
4143 fw_state = curr_abs_state & MFI_STATE_MASK;
4144 }
4145 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4146
4147 return 0;
4148 }
4149
4150 /**
4151 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4152 * @instance: Adapter soft state
4153 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4154 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4155 {
4156 int i;
4157 u16 max_cmd = instance->max_mfi_cmds;
4158 struct megasas_cmd *cmd;
4159
4160 if (!instance->frame_dma_pool)
4161 return;
4162
4163 /*
4164 * Return all frames to pool
4165 */
4166 for (i = 0; i < max_cmd; i++) {
4167
4168 cmd = instance->cmd_list[i];
4169
4170 if (cmd->frame)
4171 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4172 cmd->frame_phys_addr);
4173
4174 if (cmd->sense)
4175 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4176 cmd->sense_phys_addr);
4177 }
4178
4179 /*
4180 * Now destroy the pool itself
4181 */
4182 dma_pool_destroy(instance->frame_dma_pool);
4183 dma_pool_destroy(instance->sense_dma_pool);
4184
4185 instance->frame_dma_pool = NULL;
4186 instance->sense_dma_pool = NULL;
4187 }
4188
4189 /**
4190 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4191 * @instance: Adapter soft state
4192 *
4193 * Each command packet has an embedded DMA memory buffer that is used for
4194 * filling MFI frame and the SG list that immediately follows the frame. This
4195 * function creates those DMA memory buffers for each command packet by using
4196 * PCI pool facility.
4197 */
megasas_create_frame_pool(struct megasas_instance * instance)4198 static int megasas_create_frame_pool(struct megasas_instance *instance)
4199 {
4200 int i;
4201 u16 max_cmd;
4202 u32 frame_count;
4203 struct megasas_cmd *cmd;
4204
4205 max_cmd = instance->max_mfi_cmds;
4206
4207 /*
4208 * For MFI controllers.
4209 * max_num_sge = 60
4210 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4211 * Total 960 byte (15 MFI frame of 64 byte)
4212 *
4213 * Fusion adapter require only 3 extra frame.
4214 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4215 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4216 * Total 192 byte (3 MFI frame of 64 byte)
4217 */
4218 frame_count = (instance->adapter_type == MFI_SERIES) ?
4219 (15 + 1) : (3 + 1);
4220 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4221 /*
4222 * Use DMA pool facility provided by PCI layer
4223 */
4224 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4225 &instance->pdev->dev,
4226 instance->mfi_frame_size, 256, 0);
4227
4228 if (!instance->frame_dma_pool) {
4229 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4230 return -ENOMEM;
4231 }
4232
4233 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4234 &instance->pdev->dev, 128,
4235 4, 0);
4236
4237 if (!instance->sense_dma_pool) {
4238 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4239
4240 dma_pool_destroy(instance->frame_dma_pool);
4241 instance->frame_dma_pool = NULL;
4242
4243 return -ENOMEM;
4244 }
4245
4246 /*
4247 * Allocate and attach a frame to each of the commands in cmd_list.
4248 * By making cmd->index as the context instead of the &cmd, we can
4249 * always use 32bit context regardless of the architecture
4250 */
4251 for (i = 0; i < max_cmd; i++) {
4252
4253 cmd = instance->cmd_list[i];
4254
4255 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4256 GFP_KERNEL, &cmd->frame_phys_addr);
4257
4258 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4259 GFP_KERNEL, &cmd->sense_phys_addr);
4260
4261 /*
4262 * megasas_teardown_frame_pool() takes care of freeing
4263 * whatever has been allocated
4264 */
4265 if (!cmd->frame || !cmd->sense) {
4266 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4267 megasas_teardown_frame_pool(instance);
4268 return -ENOMEM;
4269 }
4270
4271 cmd->frame->io.context = cpu_to_le32(cmd->index);
4272 cmd->frame->io.pad_0 = 0;
4273 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4274 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4275 }
4276
4277 return 0;
4278 }
4279
4280 /**
4281 * megasas_free_cmds - Free all the cmds in the free cmd pool
4282 * @instance: Adapter soft state
4283 */
megasas_free_cmds(struct megasas_instance * instance)4284 void megasas_free_cmds(struct megasas_instance *instance)
4285 {
4286 int i;
4287
4288 /* First free the MFI frame pool */
4289 megasas_teardown_frame_pool(instance);
4290
4291 /* Free all the commands in the cmd_list */
4292 for (i = 0; i < instance->max_mfi_cmds; i++)
4293
4294 kfree(instance->cmd_list[i]);
4295
4296 /* Free the cmd_list buffer itself */
4297 kfree(instance->cmd_list);
4298 instance->cmd_list = NULL;
4299
4300 INIT_LIST_HEAD(&instance->cmd_pool);
4301 }
4302
4303 /**
4304 * megasas_alloc_cmds - Allocates the command packets
4305 * @instance: Adapter soft state
4306 *
4307 * Each command that is issued to the FW, whether IO commands from the OS or
4308 * internal commands like IOCTLs, are wrapped in local data structure called
4309 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4310 * the FW.
4311 *
4312 * Each frame has a 32-bit field called context (tag). This context is used
4313 * to get back the megasas_cmd from the frame when a frame gets completed in
4314 * the ISR. Typically the address of the megasas_cmd itself would be used as
4315 * the context. But we wanted to keep the differences between 32 and 64 bit
4316 * systems to the mininum. We always use 32 bit integers for the context. In
4317 * this driver, the 32 bit values are the indices into an array cmd_list.
4318 * This array is used only to look up the megasas_cmd given the context. The
4319 * free commands themselves are maintained in a linked list called cmd_pool.
4320 */
megasas_alloc_cmds(struct megasas_instance * instance)4321 int megasas_alloc_cmds(struct megasas_instance *instance)
4322 {
4323 int i;
4324 int j;
4325 u16 max_cmd;
4326 struct megasas_cmd *cmd;
4327
4328 max_cmd = instance->max_mfi_cmds;
4329
4330 /*
4331 * instance->cmd_list is an array of struct megasas_cmd pointers.
4332 * Allocate the dynamic array first and then allocate individual
4333 * commands.
4334 */
4335 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4336
4337 if (!instance->cmd_list) {
4338 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4339 return -ENOMEM;
4340 }
4341
4342 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4343
4344 for (i = 0; i < max_cmd; i++) {
4345 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4346 GFP_KERNEL);
4347
4348 if (!instance->cmd_list[i]) {
4349
4350 for (j = 0; j < i; j++)
4351 kfree(instance->cmd_list[j]);
4352
4353 kfree(instance->cmd_list);
4354 instance->cmd_list = NULL;
4355
4356 return -ENOMEM;
4357 }
4358 }
4359
4360 for (i = 0; i < max_cmd; i++) {
4361 cmd = instance->cmd_list[i];
4362 memset(cmd, 0, sizeof(struct megasas_cmd));
4363 cmd->index = i;
4364 cmd->scmd = NULL;
4365 cmd->instance = instance;
4366
4367 list_add_tail(&cmd->list, &instance->cmd_pool);
4368 }
4369
4370 /*
4371 * Create a frame pool and assign one frame to each cmd
4372 */
4373 if (megasas_create_frame_pool(instance)) {
4374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4375 megasas_free_cmds(instance);
4376 return -ENOMEM;
4377 }
4378
4379 return 0;
4380 }
4381
4382 /*
4383 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4384 * @instance: Adapter soft state
4385 *
4386 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4387 * or FW is not under OCR.
4388 */
4389 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4390 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4391
4392 if (instance->adapter_type == MFI_SERIES)
4393 return KILL_ADAPTER;
4394 else if (instance->unload ||
4395 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4396 return IGNORE_TIMEOUT;
4397 else
4398 return INITIATE_OCR;
4399 }
4400
4401 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4402 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4403 {
4404 int ret;
4405 struct megasas_cmd *cmd;
4406 struct megasas_dcmd_frame *dcmd;
4407
4408 struct MR_PRIV_DEVICE *mr_device_priv_data;
4409 u16 device_id = 0;
4410
4411 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4412 cmd = megasas_get_cmd(instance);
4413
4414 if (!cmd) {
4415 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4416 return;
4417 }
4418
4419 dcmd = &cmd->frame->dcmd;
4420
4421 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4422 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4423
4424 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4425 dcmd->cmd = MFI_CMD_DCMD;
4426 dcmd->cmd_status = 0xFF;
4427 dcmd->sge_count = 1;
4428 dcmd->flags = MFI_FRAME_DIR_READ;
4429 dcmd->timeout = 0;
4430 dcmd->pad_0 = 0;
4431 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4432 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4433
4434 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4435 sizeof(struct MR_PD_INFO));
4436
4437 if ((instance->adapter_type != MFI_SERIES) &&
4438 !instance->mask_interrupts)
4439 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4440 else
4441 ret = megasas_issue_polled(instance, cmd);
4442
4443 switch (ret) {
4444 case DCMD_SUCCESS:
4445 mr_device_priv_data = sdev->hostdata;
4446 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4447 mr_device_priv_data->interface_type =
4448 instance->pd_info->state.ddf.pdType.intf;
4449 break;
4450
4451 case DCMD_TIMEOUT:
4452
4453 switch (dcmd_timeout_ocr_possible(instance)) {
4454 case INITIATE_OCR:
4455 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4456 mutex_unlock(&instance->reset_mutex);
4457 megasas_reset_fusion(instance->host,
4458 MFI_IO_TIMEOUT_OCR);
4459 mutex_lock(&instance->reset_mutex);
4460 break;
4461 case KILL_ADAPTER:
4462 megaraid_sas_kill_hba(instance);
4463 break;
4464 case IGNORE_TIMEOUT:
4465 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4466 __func__, __LINE__);
4467 break;
4468 }
4469
4470 break;
4471 }
4472
4473 if (ret != DCMD_TIMEOUT)
4474 megasas_return_cmd(instance, cmd);
4475
4476 return;
4477 }
4478 /*
4479 * megasas_get_pd_list_info - Returns FW's pd_list structure
4480 * @instance: Adapter soft state
4481 * @pd_list: pd_list structure
4482 *
4483 * Issues an internal command (DCMD) to get the FW's controller PD
4484 * list structure. This information is mainly used to find out SYSTEM
4485 * supported by the FW.
4486 */
4487 static int
megasas_get_pd_list(struct megasas_instance * instance)4488 megasas_get_pd_list(struct megasas_instance *instance)
4489 {
4490 int ret = 0, pd_index = 0;
4491 struct megasas_cmd *cmd;
4492 struct megasas_dcmd_frame *dcmd;
4493 struct MR_PD_LIST *ci;
4494 struct MR_PD_ADDRESS *pd_addr;
4495
4496 if (instance->pd_list_not_supported) {
4497 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4498 "not supported by firmware\n");
4499 return ret;
4500 }
4501
4502 ci = instance->pd_list_buf;
4503
4504 cmd = megasas_get_cmd(instance);
4505
4506 if (!cmd) {
4507 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4508 return -ENOMEM;
4509 }
4510
4511 dcmd = &cmd->frame->dcmd;
4512
4513 memset(ci, 0, sizeof(*ci));
4514 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4515
4516 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4517 dcmd->mbox.b[1] = 0;
4518 dcmd->cmd = MFI_CMD_DCMD;
4519 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4520 dcmd->sge_count = 1;
4521 dcmd->flags = MFI_FRAME_DIR_READ;
4522 dcmd->timeout = 0;
4523 dcmd->pad_0 = 0;
4524 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4525 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4526
4527 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4528 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4529
4530 if ((instance->adapter_type != MFI_SERIES) &&
4531 !instance->mask_interrupts)
4532 ret = megasas_issue_blocked_cmd(instance, cmd,
4533 MFI_IO_TIMEOUT_SECS);
4534 else
4535 ret = megasas_issue_polled(instance, cmd);
4536
4537 switch (ret) {
4538 case DCMD_FAILED:
4539 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4540 "failed/not supported by firmware\n");
4541
4542 if (instance->adapter_type != MFI_SERIES)
4543 megaraid_sas_kill_hba(instance);
4544 else
4545 instance->pd_list_not_supported = 1;
4546 break;
4547 case DCMD_TIMEOUT:
4548
4549 switch (dcmd_timeout_ocr_possible(instance)) {
4550 case INITIATE_OCR:
4551 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4552 /*
4553 * DCMD failed from AEN path.
4554 * AEN path already hold reset_mutex to avoid PCI access
4555 * while OCR is in progress.
4556 */
4557 mutex_unlock(&instance->reset_mutex);
4558 megasas_reset_fusion(instance->host,
4559 MFI_IO_TIMEOUT_OCR);
4560 mutex_lock(&instance->reset_mutex);
4561 break;
4562 case KILL_ADAPTER:
4563 megaraid_sas_kill_hba(instance);
4564 break;
4565 case IGNORE_TIMEOUT:
4566 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4567 __func__, __LINE__);
4568 break;
4569 }
4570
4571 break;
4572
4573 case DCMD_SUCCESS:
4574 pd_addr = ci->addr;
4575 if (megasas_dbg_lvl & LD_PD_DEBUG)
4576 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4577 __func__, le32_to_cpu(ci->count));
4578
4579 if ((le32_to_cpu(ci->count) >
4580 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4581 break;
4582
4583 memset(instance->local_pd_list, 0,
4584 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4585
4586 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4587 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4588 le16_to_cpu(pd_addr->deviceId);
4589 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4590 pd_addr->scsiDevType;
4591 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4592 MR_PD_STATE_SYSTEM;
4593 if (megasas_dbg_lvl & LD_PD_DEBUG)
4594 dev_info(&instance->pdev->dev,
4595 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4596 pd_index, le16_to_cpu(pd_addr->deviceId),
4597 pd_addr->scsiDevType);
4598 pd_addr++;
4599 }
4600
4601 memcpy(instance->pd_list, instance->local_pd_list,
4602 sizeof(instance->pd_list));
4603 break;
4604
4605 }
4606
4607 if (ret != DCMD_TIMEOUT)
4608 megasas_return_cmd(instance, cmd);
4609
4610 return ret;
4611 }
4612
4613 /*
4614 * megasas_get_ld_list_info - Returns FW's ld_list structure
4615 * @instance: Adapter soft state
4616 * @ld_list: ld_list structure
4617 *
4618 * Issues an internal command (DCMD) to get the FW's controller PD
4619 * list structure. This information is mainly used to find out SYSTEM
4620 * supported by the FW.
4621 */
4622 static int
megasas_get_ld_list(struct megasas_instance * instance)4623 megasas_get_ld_list(struct megasas_instance *instance)
4624 {
4625 int ret = 0, ld_index = 0, ids = 0;
4626 struct megasas_cmd *cmd;
4627 struct megasas_dcmd_frame *dcmd;
4628 struct MR_LD_LIST *ci;
4629 dma_addr_t ci_h = 0;
4630 u32 ld_count;
4631
4632 ci = instance->ld_list_buf;
4633 ci_h = instance->ld_list_buf_h;
4634
4635 cmd = megasas_get_cmd(instance);
4636
4637 if (!cmd) {
4638 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4639 return -ENOMEM;
4640 }
4641
4642 dcmd = &cmd->frame->dcmd;
4643
4644 memset(ci, 0, sizeof(*ci));
4645 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4646
4647 if (instance->supportmax256vd)
4648 dcmd->mbox.b[0] = 1;
4649 dcmd->cmd = MFI_CMD_DCMD;
4650 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4651 dcmd->sge_count = 1;
4652 dcmd->flags = MFI_FRAME_DIR_READ;
4653 dcmd->timeout = 0;
4654 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4655 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4656 dcmd->pad_0 = 0;
4657
4658 megasas_set_dma_settings(instance, dcmd, ci_h,
4659 sizeof(struct MR_LD_LIST));
4660
4661 if ((instance->adapter_type != MFI_SERIES) &&
4662 !instance->mask_interrupts)
4663 ret = megasas_issue_blocked_cmd(instance, cmd,
4664 MFI_IO_TIMEOUT_SECS);
4665 else
4666 ret = megasas_issue_polled(instance, cmd);
4667
4668 ld_count = le32_to_cpu(ci->ldCount);
4669
4670 switch (ret) {
4671 case DCMD_FAILED:
4672 megaraid_sas_kill_hba(instance);
4673 break;
4674 case DCMD_TIMEOUT:
4675
4676 switch (dcmd_timeout_ocr_possible(instance)) {
4677 case INITIATE_OCR:
4678 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4679 /*
4680 * DCMD failed from AEN path.
4681 * AEN path already hold reset_mutex to avoid PCI access
4682 * while OCR is in progress.
4683 */
4684 mutex_unlock(&instance->reset_mutex);
4685 megasas_reset_fusion(instance->host,
4686 MFI_IO_TIMEOUT_OCR);
4687 mutex_lock(&instance->reset_mutex);
4688 break;
4689 case KILL_ADAPTER:
4690 megaraid_sas_kill_hba(instance);
4691 break;
4692 case IGNORE_TIMEOUT:
4693 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4694 __func__, __LINE__);
4695 break;
4696 }
4697
4698 break;
4699
4700 case DCMD_SUCCESS:
4701 if (megasas_dbg_lvl & LD_PD_DEBUG)
4702 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4703 __func__, ld_count);
4704
4705 if (ld_count > instance->fw_supported_vd_count)
4706 break;
4707
4708 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4709
4710 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4711 if (ci->ldList[ld_index].state != 0) {
4712 ids = ci->ldList[ld_index].ref.targetId;
4713 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4714 if (megasas_dbg_lvl & LD_PD_DEBUG)
4715 dev_info(&instance->pdev->dev,
4716 "LD%d: targetID: 0x%03x\n",
4717 ld_index, ids);
4718 }
4719 }
4720
4721 break;
4722 }
4723
4724 if (ret != DCMD_TIMEOUT)
4725 megasas_return_cmd(instance, cmd);
4726
4727 return ret;
4728 }
4729
4730 /**
4731 * megasas_ld_list_query - Returns FW's ld_list structure
4732 * @instance: Adapter soft state
4733 * @ld_list: ld_list structure
4734 *
4735 * Issues an internal command (DCMD) to get the FW's controller PD
4736 * list structure. This information is mainly used to find out SYSTEM
4737 * supported by the FW.
4738 */
4739 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4740 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4741 {
4742 int ret = 0, ld_index = 0, ids = 0;
4743 struct megasas_cmd *cmd;
4744 struct megasas_dcmd_frame *dcmd;
4745 struct MR_LD_TARGETID_LIST *ci;
4746 dma_addr_t ci_h = 0;
4747 u32 tgtid_count;
4748
4749 ci = instance->ld_targetid_list_buf;
4750 ci_h = instance->ld_targetid_list_buf_h;
4751
4752 cmd = megasas_get_cmd(instance);
4753
4754 if (!cmd) {
4755 dev_warn(&instance->pdev->dev,
4756 "megasas_ld_list_query: Failed to get cmd\n");
4757 return -ENOMEM;
4758 }
4759
4760 dcmd = &cmd->frame->dcmd;
4761
4762 memset(ci, 0, sizeof(*ci));
4763 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4764
4765 dcmd->mbox.b[0] = query_type;
4766 if (instance->supportmax256vd)
4767 dcmd->mbox.b[2] = 1;
4768
4769 dcmd->cmd = MFI_CMD_DCMD;
4770 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4771 dcmd->sge_count = 1;
4772 dcmd->flags = MFI_FRAME_DIR_READ;
4773 dcmd->timeout = 0;
4774 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4775 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4776 dcmd->pad_0 = 0;
4777
4778 megasas_set_dma_settings(instance, dcmd, ci_h,
4779 sizeof(struct MR_LD_TARGETID_LIST));
4780
4781 if ((instance->adapter_type != MFI_SERIES) &&
4782 !instance->mask_interrupts)
4783 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4784 else
4785 ret = megasas_issue_polled(instance, cmd);
4786
4787 switch (ret) {
4788 case DCMD_FAILED:
4789 dev_info(&instance->pdev->dev,
4790 "DCMD not supported by firmware - %s %d\n",
4791 __func__, __LINE__);
4792 ret = megasas_get_ld_list(instance);
4793 break;
4794 case DCMD_TIMEOUT:
4795 switch (dcmd_timeout_ocr_possible(instance)) {
4796 case INITIATE_OCR:
4797 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4798 /*
4799 * DCMD failed from AEN path.
4800 * AEN path already hold reset_mutex to avoid PCI access
4801 * while OCR is in progress.
4802 */
4803 mutex_unlock(&instance->reset_mutex);
4804 megasas_reset_fusion(instance->host,
4805 MFI_IO_TIMEOUT_OCR);
4806 mutex_lock(&instance->reset_mutex);
4807 break;
4808 case KILL_ADAPTER:
4809 megaraid_sas_kill_hba(instance);
4810 break;
4811 case IGNORE_TIMEOUT:
4812 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4813 __func__, __LINE__);
4814 break;
4815 }
4816
4817 break;
4818 case DCMD_SUCCESS:
4819 tgtid_count = le32_to_cpu(ci->count);
4820
4821 if (megasas_dbg_lvl & LD_PD_DEBUG)
4822 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4823 __func__, tgtid_count);
4824
4825 if ((tgtid_count > (instance->fw_supported_vd_count)))
4826 break;
4827
4828 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4829 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4830 ids = ci->targetId[ld_index];
4831 instance->ld_ids[ids] = ci->targetId[ld_index];
4832 if (megasas_dbg_lvl & LD_PD_DEBUG)
4833 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4834 ld_index, ci->targetId[ld_index]);
4835 }
4836
4837 break;
4838 }
4839
4840 if (ret != DCMD_TIMEOUT)
4841 megasas_return_cmd(instance, cmd);
4842
4843 return ret;
4844 }
4845
4846 /**
4847 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4848 * dcmd.mbox - reserved
4849 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4850 * Desc: This DCMD will return the combined device list
4851 * Status: MFI_STAT_OK - List returned successfully
4852 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4853 * disabled
4854 * @instance: Adapter soft state
4855 * @is_probe: Driver probe check
4856 * Return: 0 if DCMD succeeded
4857 * non-zero if failed
4858 */
4859 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4860 megasas_host_device_list_query(struct megasas_instance *instance,
4861 bool is_probe)
4862 {
4863 int ret, i, target_id;
4864 struct megasas_cmd *cmd;
4865 struct megasas_dcmd_frame *dcmd;
4866 struct MR_HOST_DEVICE_LIST *ci;
4867 u32 count;
4868 dma_addr_t ci_h;
4869
4870 ci = instance->host_device_list_buf;
4871 ci_h = instance->host_device_list_buf_h;
4872
4873 cmd = megasas_get_cmd(instance);
4874
4875 if (!cmd) {
4876 dev_warn(&instance->pdev->dev,
4877 "%s: failed to get cmd\n",
4878 __func__);
4879 return -ENOMEM;
4880 }
4881
4882 dcmd = &cmd->frame->dcmd;
4883
4884 memset(ci, 0, sizeof(*ci));
4885 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4886
4887 dcmd->mbox.b[0] = is_probe ? 0 : 1;
4888 dcmd->cmd = MFI_CMD_DCMD;
4889 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4890 dcmd->sge_count = 1;
4891 dcmd->flags = MFI_FRAME_DIR_READ;
4892 dcmd->timeout = 0;
4893 dcmd->pad_0 = 0;
4894 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4895 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4896
4897 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4898
4899 if (!instance->mask_interrupts) {
4900 ret = megasas_issue_blocked_cmd(instance, cmd,
4901 MFI_IO_TIMEOUT_SECS);
4902 } else {
4903 ret = megasas_issue_polled(instance, cmd);
4904 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4905 }
4906
4907 switch (ret) {
4908 case DCMD_SUCCESS:
4909 /* Fill the internal pd_list and ld_ids array based on
4910 * targetIds returned by FW
4911 */
4912 count = le32_to_cpu(ci->count);
4913
4914 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4915 break;
4916
4917 if (megasas_dbg_lvl & LD_PD_DEBUG)
4918 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
4919 __func__, count);
4920
4921 memset(instance->local_pd_list, 0,
4922 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4923 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4924 for (i = 0; i < count; i++) {
4925 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4926 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4927 instance->local_pd_list[target_id].tid = target_id;
4928 instance->local_pd_list[target_id].driveType =
4929 ci->host_device_list[i].scsi_type;
4930 instance->local_pd_list[target_id].driveState =
4931 MR_PD_STATE_SYSTEM;
4932 if (megasas_dbg_lvl & LD_PD_DEBUG)
4933 dev_info(&instance->pdev->dev,
4934 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
4935 i, target_id, ci->host_device_list[i].scsi_type);
4936 } else {
4937 instance->ld_ids[target_id] = target_id;
4938 if (megasas_dbg_lvl & LD_PD_DEBUG)
4939 dev_info(&instance->pdev->dev,
4940 "Device %d: LD targetID: 0x%03x\n",
4941 i, target_id);
4942 }
4943 }
4944
4945 memcpy(instance->pd_list, instance->local_pd_list,
4946 sizeof(instance->pd_list));
4947 break;
4948
4949 case DCMD_TIMEOUT:
4950 switch (dcmd_timeout_ocr_possible(instance)) {
4951 case INITIATE_OCR:
4952 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4953 mutex_unlock(&instance->reset_mutex);
4954 megasas_reset_fusion(instance->host,
4955 MFI_IO_TIMEOUT_OCR);
4956 mutex_lock(&instance->reset_mutex);
4957 break;
4958 case KILL_ADAPTER:
4959 megaraid_sas_kill_hba(instance);
4960 break;
4961 case IGNORE_TIMEOUT:
4962 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4963 __func__, __LINE__);
4964 break;
4965 }
4966 break;
4967 case DCMD_FAILED:
4968 dev_err(&instance->pdev->dev,
4969 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4970 __func__);
4971 break;
4972 }
4973
4974 if (ret != DCMD_TIMEOUT)
4975 megasas_return_cmd(instance, cmd);
4976
4977 return ret;
4978 }
4979
4980 /*
4981 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4982 * instance : Controller's instance
4983 */
megasas_update_ext_vd_details(struct megasas_instance * instance)4984 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4985 {
4986 struct fusion_context *fusion;
4987 u32 ventura_map_sz = 0;
4988
4989 fusion = instance->ctrl_context;
4990 /* For MFI based controllers return dummy success */
4991 if (!fusion)
4992 return;
4993
4994 instance->supportmax256vd =
4995 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4996 /* Below is additional check to address future FW enhancement */
4997 if (instance->ctrl_info_buf->max_lds > 64)
4998 instance->supportmax256vd = 1;
4999
5000 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5001 * MEGASAS_MAX_DEV_PER_CHANNEL;
5002 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5003 * MEGASAS_MAX_DEV_PER_CHANNEL;
5004 if (instance->supportmax256vd) {
5005 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5006 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5007 } else {
5008 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5009 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5010 }
5011
5012 dev_info(&instance->pdev->dev,
5013 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5014 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5015 instance->ctrl_info_buf->max_lds);
5016
5017 if (instance->max_raid_mapsize) {
5018 ventura_map_sz = instance->max_raid_mapsize *
5019 MR_MIN_MAP_SIZE; /* 64k */
5020 fusion->current_map_sz = ventura_map_sz;
5021 fusion->max_map_sz = ventura_map_sz;
5022 } else {
5023 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
5024 (sizeof(struct MR_LD_SPAN_MAP) *
5025 (instance->fw_supported_vd_count - 1));
5026 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5027
5028 fusion->max_map_sz =
5029 max(fusion->old_map_sz, fusion->new_map_sz);
5030
5031 if (instance->supportmax256vd)
5032 fusion->current_map_sz = fusion->new_map_sz;
5033 else
5034 fusion->current_map_sz = fusion->old_map_sz;
5035 }
5036 /* irrespective of FW raid maps, driver raid map is constant */
5037 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5038 }
5039
5040 /*
5041 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5042 * dcmd.hdr.length - number of bytes to read
5043 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5044 * Desc: Fill in snapdump properties
5045 * Status: MFI_STAT_OK- Command successful
5046 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5047 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5048 {
5049 int ret = 0;
5050 struct megasas_cmd *cmd;
5051 struct megasas_dcmd_frame *dcmd;
5052 struct MR_SNAPDUMP_PROPERTIES *ci;
5053 dma_addr_t ci_h = 0;
5054
5055 ci = instance->snapdump_prop;
5056 ci_h = instance->snapdump_prop_h;
5057
5058 if (!ci)
5059 return;
5060
5061 cmd = megasas_get_cmd(instance);
5062
5063 if (!cmd) {
5064 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5065 return;
5066 }
5067
5068 dcmd = &cmd->frame->dcmd;
5069
5070 memset(ci, 0, sizeof(*ci));
5071 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5072
5073 dcmd->cmd = MFI_CMD_DCMD;
5074 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5075 dcmd->sge_count = 1;
5076 dcmd->flags = MFI_FRAME_DIR_READ;
5077 dcmd->timeout = 0;
5078 dcmd->pad_0 = 0;
5079 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5080 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5081
5082 megasas_set_dma_settings(instance, dcmd, ci_h,
5083 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5084
5085 if (!instance->mask_interrupts) {
5086 ret = megasas_issue_blocked_cmd(instance, cmd,
5087 MFI_IO_TIMEOUT_SECS);
5088 } else {
5089 ret = megasas_issue_polled(instance, cmd);
5090 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5091 }
5092
5093 switch (ret) {
5094 case DCMD_SUCCESS:
5095 instance->snapdump_wait_time =
5096 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5097 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5098 break;
5099
5100 case DCMD_TIMEOUT:
5101 switch (dcmd_timeout_ocr_possible(instance)) {
5102 case INITIATE_OCR:
5103 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5104 mutex_unlock(&instance->reset_mutex);
5105 megasas_reset_fusion(instance->host,
5106 MFI_IO_TIMEOUT_OCR);
5107 mutex_lock(&instance->reset_mutex);
5108 break;
5109 case KILL_ADAPTER:
5110 megaraid_sas_kill_hba(instance);
5111 break;
5112 case IGNORE_TIMEOUT:
5113 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5114 __func__, __LINE__);
5115 break;
5116 }
5117 }
5118
5119 if (ret != DCMD_TIMEOUT)
5120 megasas_return_cmd(instance, cmd);
5121 }
5122
5123 /**
5124 * megasas_get_controller_info - Returns FW's controller structure
5125 * @instance: Adapter soft state
5126 *
5127 * Issues an internal command (DCMD) to get the FW's controller structure.
5128 * This information is mainly used to find out the maximum IO transfer per
5129 * command supported by the FW.
5130 */
5131 int
megasas_get_ctrl_info(struct megasas_instance * instance)5132 megasas_get_ctrl_info(struct megasas_instance *instance)
5133 {
5134 int ret = 0;
5135 struct megasas_cmd *cmd;
5136 struct megasas_dcmd_frame *dcmd;
5137 struct megasas_ctrl_info *ci;
5138 dma_addr_t ci_h = 0;
5139
5140 ci = instance->ctrl_info_buf;
5141 ci_h = instance->ctrl_info_buf_h;
5142
5143 cmd = megasas_get_cmd(instance);
5144
5145 if (!cmd) {
5146 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5147 return -ENOMEM;
5148 }
5149
5150 dcmd = &cmd->frame->dcmd;
5151
5152 memset(ci, 0, sizeof(*ci));
5153 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5154
5155 dcmd->cmd = MFI_CMD_DCMD;
5156 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5157 dcmd->sge_count = 1;
5158 dcmd->flags = MFI_FRAME_DIR_READ;
5159 dcmd->timeout = 0;
5160 dcmd->pad_0 = 0;
5161 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5162 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5163 dcmd->mbox.b[0] = 1;
5164
5165 megasas_set_dma_settings(instance, dcmd, ci_h,
5166 sizeof(struct megasas_ctrl_info));
5167
5168 if ((instance->adapter_type != MFI_SERIES) &&
5169 !instance->mask_interrupts) {
5170 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5171 } else {
5172 ret = megasas_issue_polled(instance, cmd);
5173 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5174 }
5175
5176 switch (ret) {
5177 case DCMD_SUCCESS:
5178 /* Save required controller information in
5179 * CPU endianness format.
5180 */
5181 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5182 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5183 le32_to_cpus((u32 *)&ci->adapterOperations2);
5184 le32_to_cpus((u32 *)&ci->adapterOperations3);
5185 le16_to_cpus((u16 *)&ci->adapter_operations4);
5186 le32_to_cpus((u32 *)&ci->adapter_operations5);
5187
5188 /* Update the latest Ext VD info.
5189 * From Init path, store current firmware details.
5190 * From OCR path, detect any firmware properties changes.
5191 * in case of Firmware upgrade without system reboot.
5192 */
5193 megasas_update_ext_vd_details(instance);
5194 instance->support_seqnum_jbod_fp =
5195 ci->adapterOperations3.useSeqNumJbodFP;
5196 instance->support_morethan256jbod =
5197 ci->adapter_operations4.support_pd_map_target_id;
5198 instance->support_nvme_passthru =
5199 ci->adapter_operations4.support_nvme_passthru;
5200 instance->support_pci_lane_margining =
5201 ci->adapter_operations5.support_pci_lane_margining;
5202 instance->task_abort_tmo = ci->TaskAbortTO;
5203 instance->max_reset_tmo = ci->MaxResetTO;
5204
5205 /*Check whether controller is iMR or MR */
5206 instance->is_imr = (ci->memory_size ? 0 : 1);
5207
5208 instance->snapdump_wait_time =
5209 (ci->properties.on_off_properties2.enable_snap_dump ?
5210 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5211
5212 instance->enable_fw_dev_list =
5213 ci->properties.on_off_properties2.enable_fw_dev_list;
5214
5215 dev_info(&instance->pdev->dev,
5216 "controller type\t: %s(%dMB)\n",
5217 instance->is_imr ? "iMR" : "MR",
5218 le16_to_cpu(ci->memory_size));
5219
5220 instance->disableOnlineCtrlReset =
5221 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5222 instance->secure_jbod_support =
5223 ci->adapterOperations3.supportSecurityonJBOD;
5224 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5225 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5226 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5227 instance->secure_jbod_support ? "Yes" : "No");
5228 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5229 instance->support_nvme_passthru ? "Yes" : "No");
5230 dev_info(&instance->pdev->dev,
5231 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5232 instance->task_abort_tmo, instance->max_reset_tmo);
5233 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5234 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5235 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5236 instance->support_pci_lane_margining ? "Yes" : "No");
5237
5238 break;
5239
5240 case DCMD_TIMEOUT:
5241 switch (dcmd_timeout_ocr_possible(instance)) {
5242 case INITIATE_OCR:
5243 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5244 mutex_unlock(&instance->reset_mutex);
5245 megasas_reset_fusion(instance->host,
5246 MFI_IO_TIMEOUT_OCR);
5247 mutex_lock(&instance->reset_mutex);
5248 break;
5249 case KILL_ADAPTER:
5250 megaraid_sas_kill_hba(instance);
5251 break;
5252 case IGNORE_TIMEOUT:
5253 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5254 __func__, __LINE__);
5255 break;
5256 }
5257 break;
5258 case DCMD_FAILED:
5259 megaraid_sas_kill_hba(instance);
5260 break;
5261
5262 }
5263
5264 if (ret != DCMD_TIMEOUT)
5265 megasas_return_cmd(instance, cmd);
5266
5267 return ret;
5268 }
5269
5270 /*
5271 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5272 * to firmware
5273 *
5274 * @instance: Adapter soft state
5275 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5276 MR_CRASH_BUF_TURN_OFF = 0
5277 MR_CRASH_BUF_TURN_ON = 1
5278 * @return 0 on success non-zero on failure.
5279 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5280 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5281 * that driver supports crash dump feature. This DCMD will be sent only if
5282 * crash dump feature is supported by the FW.
5283 *
5284 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5285 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5286 u8 crash_buf_state)
5287 {
5288 int ret = 0;
5289 struct megasas_cmd *cmd;
5290 struct megasas_dcmd_frame *dcmd;
5291
5292 cmd = megasas_get_cmd(instance);
5293
5294 if (!cmd) {
5295 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5296 return -ENOMEM;
5297 }
5298
5299
5300 dcmd = &cmd->frame->dcmd;
5301
5302 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5303 dcmd->mbox.b[0] = crash_buf_state;
5304 dcmd->cmd = MFI_CMD_DCMD;
5305 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5306 dcmd->sge_count = 1;
5307 dcmd->flags = MFI_FRAME_DIR_NONE;
5308 dcmd->timeout = 0;
5309 dcmd->pad_0 = 0;
5310 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5311 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5312
5313 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5314 CRASH_DMA_BUF_SIZE);
5315
5316 if ((instance->adapter_type != MFI_SERIES) &&
5317 !instance->mask_interrupts)
5318 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5319 else
5320 ret = megasas_issue_polled(instance, cmd);
5321
5322 if (ret == DCMD_TIMEOUT) {
5323 switch (dcmd_timeout_ocr_possible(instance)) {
5324 case INITIATE_OCR:
5325 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5326 megasas_reset_fusion(instance->host,
5327 MFI_IO_TIMEOUT_OCR);
5328 break;
5329 case KILL_ADAPTER:
5330 megaraid_sas_kill_hba(instance);
5331 break;
5332 case IGNORE_TIMEOUT:
5333 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5334 __func__, __LINE__);
5335 break;
5336 }
5337 } else
5338 megasas_return_cmd(instance, cmd);
5339
5340 return ret;
5341 }
5342
5343 /**
5344 * megasas_issue_init_mfi - Initializes the FW
5345 * @instance: Adapter soft state
5346 *
5347 * Issues the INIT MFI cmd
5348 */
5349 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5350 megasas_issue_init_mfi(struct megasas_instance *instance)
5351 {
5352 __le32 context;
5353 struct megasas_cmd *cmd;
5354 struct megasas_init_frame *init_frame;
5355 struct megasas_init_queue_info *initq_info;
5356 dma_addr_t init_frame_h;
5357 dma_addr_t initq_info_h;
5358
5359 /*
5360 * Prepare a init frame. Note the init frame points to queue info
5361 * structure. Each frame has SGL allocated after first 64 bytes. For
5362 * this frame - since we don't need any SGL - we use SGL's space as
5363 * queue info structure
5364 *
5365 * We will not get a NULL command below. We just created the pool.
5366 */
5367 cmd = megasas_get_cmd(instance);
5368
5369 init_frame = (struct megasas_init_frame *)cmd->frame;
5370 initq_info = (struct megasas_init_queue_info *)
5371 ((unsigned long)init_frame + 64);
5372
5373 init_frame_h = cmd->frame_phys_addr;
5374 initq_info_h = init_frame_h + 64;
5375
5376 context = init_frame->context;
5377 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5378 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5379 init_frame->context = context;
5380
5381 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5382 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5383
5384 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5385 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5386
5387 init_frame->cmd = MFI_CMD_INIT;
5388 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5389 init_frame->queue_info_new_phys_addr_lo =
5390 cpu_to_le32(lower_32_bits(initq_info_h));
5391 init_frame->queue_info_new_phys_addr_hi =
5392 cpu_to_le32(upper_32_bits(initq_info_h));
5393
5394 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5395
5396 /*
5397 * disable the intr before firing the init frame to FW
5398 */
5399 instance->instancet->disable_intr(instance);
5400
5401 /*
5402 * Issue the init frame in polled mode
5403 */
5404
5405 if (megasas_issue_polled(instance, cmd)) {
5406 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5407 megasas_return_cmd(instance, cmd);
5408 goto fail_fw_init;
5409 }
5410
5411 megasas_return_cmd(instance, cmd);
5412
5413 return 0;
5414
5415 fail_fw_init:
5416 return -EINVAL;
5417 }
5418
5419 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5420 megasas_init_adapter_mfi(struct megasas_instance *instance)
5421 {
5422 u32 context_sz;
5423 u32 reply_q_sz;
5424
5425 /*
5426 * Get various operational parameters from status register
5427 */
5428 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5429 /*
5430 * Reduce the max supported cmds by 1. This is to ensure that the
5431 * reply_q_sz (1 more than the max cmd that driver may send)
5432 * does not exceed max cmds that the FW can support
5433 */
5434 instance->max_fw_cmds = instance->max_fw_cmds-1;
5435 instance->max_mfi_cmds = instance->max_fw_cmds;
5436 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5437 0x10;
5438 /*
5439 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5440 * are reserved for IOCTL + driver's internal DCMDs.
5441 */
5442 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5443 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5444 instance->max_scsi_cmds = (instance->max_fw_cmds -
5445 MEGASAS_SKINNY_INT_CMDS);
5446 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5447 } else {
5448 instance->max_scsi_cmds = (instance->max_fw_cmds -
5449 MEGASAS_INT_CMDS);
5450 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5451 }
5452
5453 instance->cur_can_queue = instance->max_scsi_cmds;
5454 /*
5455 * Create a pool of commands
5456 */
5457 if (megasas_alloc_cmds(instance))
5458 goto fail_alloc_cmds;
5459
5460 /*
5461 * Allocate memory for reply queue. Length of reply queue should
5462 * be _one_ more than the maximum commands handled by the firmware.
5463 *
5464 * Note: When FW completes commands, it places corresponding contex
5465 * values in this circular reply queue. This circular queue is a fairly
5466 * typical producer-consumer queue. FW is the producer (of completed
5467 * commands) and the driver is the consumer.
5468 */
5469 context_sz = sizeof(u32);
5470 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5471
5472 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5473 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5474
5475 if (!instance->reply_queue) {
5476 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5477 goto fail_reply_queue;
5478 }
5479
5480 if (megasas_issue_init_mfi(instance))
5481 goto fail_fw_init;
5482
5483 if (megasas_get_ctrl_info(instance)) {
5484 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5485 "Fail from %s %d\n", instance->unique_id,
5486 __func__, __LINE__);
5487 goto fail_fw_init;
5488 }
5489
5490 instance->fw_support_ieee = 0;
5491 instance->fw_support_ieee =
5492 (instance->instancet->read_fw_status_reg(instance) &
5493 0x04000000);
5494
5495 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5496 instance->fw_support_ieee);
5497
5498 if (instance->fw_support_ieee)
5499 instance->flag_ieee = 1;
5500
5501 return 0;
5502
5503 fail_fw_init:
5504
5505 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5506 instance->reply_queue, instance->reply_queue_h);
5507 fail_reply_queue:
5508 megasas_free_cmds(instance);
5509
5510 fail_alloc_cmds:
5511 return 1;
5512 }
5513
5514 static
megasas_setup_irq_poll(struct megasas_instance * instance)5515 void megasas_setup_irq_poll(struct megasas_instance *instance)
5516 {
5517 struct megasas_irq_context *irq_ctx;
5518 u32 count, i;
5519
5520 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5521
5522 /* Initialize IRQ poll */
5523 for (i = 0; i < count; i++) {
5524 irq_ctx = &instance->irq_context[i];
5525 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5526 irq_ctx->irq_poll_scheduled = false;
5527 irq_poll_init(&irq_ctx->irqpoll,
5528 instance->threshold_reply_count,
5529 megasas_irqpoll);
5530 }
5531 }
5532
5533 /*
5534 * megasas_setup_irqs_ioapic - register legacy interrupts.
5535 * @instance: Adapter soft state
5536 *
5537 * Do not enable interrupt, only setup ISRs.
5538 *
5539 * Return 0 on success.
5540 */
5541 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5542 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5543 {
5544 struct pci_dev *pdev;
5545
5546 pdev = instance->pdev;
5547 instance->irq_context[0].instance = instance;
5548 instance->irq_context[0].MSIxIndex = 0;
5549 if (request_irq(pci_irq_vector(pdev, 0),
5550 instance->instancet->service_isr, IRQF_SHARED,
5551 "megasas", &instance->irq_context[0])) {
5552 dev_err(&instance->pdev->dev,
5553 "Failed to register IRQ from %s %d\n",
5554 __func__, __LINE__);
5555 return -1;
5556 }
5557 instance->perf_mode = MR_LATENCY_PERF_MODE;
5558 instance->low_latency_index_start = 0;
5559 return 0;
5560 }
5561
5562 /**
5563 * megasas_setup_irqs_msix - register MSI-x interrupts.
5564 * @instance: Adapter soft state
5565 * @is_probe: Driver probe check
5566 *
5567 * Do not enable interrupt, only setup ISRs.
5568 *
5569 * Return 0 on success.
5570 */
5571 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5572 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5573 {
5574 int i, j;
5575 struct pci_dev *pdev;
5576
5577 pdev = instance->pdev;
5578
5579 /* Try MSI-x */
5580 for (i = 0; i < instance->msix_vectors; i++) {
5581 instance->irq_context[i].instance = instance;
5582 instance->irq_context[i].MSIxIndex = i;
5583 if (request_irq(pci_irq_vector(pdev, i),
5584 instance->instancet->service_isr, 0, "megasas",
5585 &instance->irq_context[i])) {
5586 dev_err(&instance->pdev->dev,
5587 "Failed to register IRQ for vector %d.\n", i);
5588 for (j = 0; j < i; j++)
5589 free_irq(pci_irq_vector(pdev, j),
5590 &instance->irq_context[j]);
5591 /* Retry irq register for IO_APIC*/
5592 instance->msix_vectors = 0;
5593 instance->msix_load_balance = false;
5594 if (is_probe) {
5595 pci_free_irq_vectors(instance->pdev);
5596 return megasas_setup_irqs_ioapic(instance);
5597 } else {
5598 return -1;
5599 }
5600 }
5601 }
5602
5603 return 0;
5604 }
5605
5606 /*
5607 * megasas_destroy_irqs- unregister interrupts.
5608 * @instance: Adapter soft state
5609 * return: void
5610 */
5611 static void
megasas_destroy_irqs(struct megasas_instance * instance)5612 megasas_destroy_irqs(struct megasas_instance *instance) {
5613
5614 int i;
5615 int count;
5616 struct megasas_irq_context *irq_ctx;
5617
5618 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5619 if (instance->adapter_type != MFI_SERIES) {
5620 for (i = 0; i < count; i++) {
5621 irq_ctx = &instance->irq_context[i];
5622 irq_poll_disable(&irq_ctx->irqpoll);
5623 }
5624 }
5625
5626 if (instance->msix_vectors)
5627 for (i = 0; i < instance->msix_vectors; i++) {
5628 free_irq(pci_irq_vector(instance->pdev, i),
5629 &instance->irq_context[i]);
5630 }
5631 else
5632 free_irq(pci_irq_vector(instance->pdev, 0),
5633 &instance->irq_context[0]);
5634 }
5635
5636 /**
5637 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5638 * @instance: Adapter soft state
5639 * @is_probe: Driver probe check
5640 *
5641 * Return 0 on success.
5642 */
5643 void
megasas_setup_jbod_map(struct megasas_instance * instance)5644 megasas_setup_jbod_map(struct megasas_instance *instance)
5645 {
5646 int i;
5647 struct fusion_context *fusion = instance->ctrl_context;
5648 u32 pd_seq_map_sz;
5649
5650 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5651 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5652
5653 instance->use_seqnum_jbod_fp =
5654 instance->support_seqnum_jbod_fp;
5655 if (reset_devices || !fusion ||
5656 !instance->support_seqnum_jbod_fp) {
5657 dev_info(&instance->pdev->dev,
5658 "JBOD sequence map is disabled %s %d\n",
5659 __func__, __LINE__);
5660 instance->use_seqnum_jbod_fp = false;
5661 return;
5662 }
5663
5664 if (fusion->pd_seq_sync[0])
5665 goto skip_alloc;
5666
5667 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5668 fusion->pd_seq_sync[i] = dma_alloc_coherent
5669 (&instance->pdev->dev, pd_seq_map_sz,
5670 &fusion->pd_seq_phys[i], GFP_KERNEL);
5671 if (!fusion->pd_seq_sync[i]) {
5672 dev_err(&instance->pdev->dev,
5673 "Failed to allocate memory from %s %d\n",
5674 __func__, __LINE__);
5675 if (i == 1) {
5676 dma_free_coherent(&instance->pdev->dev,
5677 pd_seq_map_sz, fusion->pd_seq_sync[0],
5678 fusion->pd_seq_phys[0]);
5679 fusion->pd_seq_sync[0] = NULL;
5680 }
5681 instance->use_seqnum_jbod_fp = false;
5682 return;
5683 }
5684 }
5685
5686 skip_alloc:
5687 if (!megasas_sync_pd_seq_num(instance, false) &&
5688 !megasas_sync_pd_seq_num(instance, true))
5689 instance->use_seqnum_jbod_fp = true;
5690 else
5691 instance->use_seqnum_jbod_fp = false;
5692 }
5693
megasas_setup_reply_map(struct megasas_instance * instance)5694 static void megasas_setup_reply_map(struct megasas_instance *instance)
5695 {
5696 const struct cpumask *mask;
5697 unsigned int queue, cpu, low_latency_index_start;
5698
5699 low_latency_index_start = instance->low_latency_index_start;
5700
5701 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5702 mask = pci_irq_get_affinity(instance->pdev, queue);
5703 if (!mask)
5704 goto fallback;
5705
5706 for_each_cpu(cpu, mask)
5707 instance->reply_map[cpu] = queue;
5708 }
5709 return;
5710
5711 fallback:
5712 queue = low_latency_index_start;
5713 for_each_possible_cpu(cpu) {
5714 instance->reply_map[cpu] = queue;
5715 if (queue == (instance->msix_vectors - 1))
5716 queue = low_latency_index_start;
5717 else
5718 queue++;
5719 }
5720 }
5721
5722 /**
5723 * megasas_get_device_list - Get the PD and LD device list from FW.
5724 * @instance: Adapter soft state
5725 * @return: Success or failure
5726 *
5727 * Issue DCMDs to Firmware to get the PD and LD list.
5728 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5729 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5730 */
5731 static
megasas_get_device_list(struct megasas_instance * instance)5732 int megasas_get_device_list(struct megasas_instance *instance)
5733 {
5734 memset(instance->pd_list, 0,
5735 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5736 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5737
5738 if (instance->enable_fw_dev_list) {
5739 if (megasas_host_device_list_query(instance, true))
5740 return FAILED;
5741 } else {
5742 if (megasas_get_pd_list(instance) < 0) {
5743 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5744 return FAILED;
5745 }
5746
5747 if (megasas_ld_list_query(instance,
5748 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5749 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5750 return FAILED;
5751 }
5752 }
5753
5754 return SUCCESS;
5755 }
5756
5757 /**
5758 * megasas_set_high_iops_queue_affinity_hint - Set affinity hint for high IOPS queues
5759 * @instance: Adapter soft state
5760 * return: void
5761 */
5762 static inline void
megasas_set_high_iops_queue_affinity_hint(struct megasas_instance * instance)5763 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5764 {
5765 int i;
5766 int local_numa_node;
5767
5768 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5769 local_numa_node = dev_to_node(&instance->pdev->dev);
5770
5771 for (i = 0; i < instance->low_latency_index_start; i++)
5772 irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5773 cpumask_of_node(local_numa_node));
5774 }
5775 }
5776
5777 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5778 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5779 {
5780 int i, irq_flags;
5781 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5782 struct irq_affinity *descp = &desc;
5783
5784 irq_flags = PCI_IRQ_MSIX;
5785
5786 if (instance->smp_affinity_enable)
5787 irq_flags |= PCI_IRQ_AFFINITY;
5788 else
5789 descp = NULL;
5790
5791 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5792 instance->low_latency_index_start,
5793 instance->msix_vectors, irq_flags, descp);
5794
5795 return i;
5796 }
5797
5798 /**
5799 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5800 * @instance: Adapter soft state
5801 * return: void
5802 */
5803 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5804 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5805 {
5806 int i;
5807 unsigned int num_msix_req;
5808
5809 i = __megasas_alloc_irq_vectors(instance);
5810
5811 if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5812 (i != instance->msix_vectors)) {
5813 if (instance->msix_vectors)
5814 pci_free_irq_vectors(instance->pdev);
5815 /* Disable Balanced IOPS mode and try realloc vectors */
5816 instance->perf_mode = MR_LATENCY_PERF_MODE;
5817 instance->low_latency_index_start = 1;
5818 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5819
5820 instance->msix_vectors = min(num_msix_req,
5821 instance->msix_vectors);
5822
5823 i = __megasas_alloc_irq_vectors(instance);
5824
5825 }
5826
5827 dev_info(&instance->pdev->dev,
5828 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5829
5830 if (i > 0)
5831 instance->msix_vectors = i;
5832 else
5833 instance->msix_vectors = 0;
5834
5835 if (instance->smp_affinity_enable)
5836 megasas_set_high_iops_queue_affinity_hint(instance);
5837 }
5838
5839 /**
5840 * megasas_init_fw - Initializes the FW
5841 * @instance: Adapter soft state
5842 *
5843 * This is the main function for initializing firmware
5844 */
5845
megasas_init_fw(struct megasas_instance * instance)5846 static int megasas_init_fw(struct megasas_instance *instance)
5847 {
5848 u32 max_sectors_1;
5849 u32 max_sectors_2, tmp_sectors, msix_enable;
5850 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5851 resource_size_t base_addr;
5852 void *base_addr_phys;
5853 struct megasas_ctrl_info *ctrl_info = NULL;
5854 unsigned long bar_list;
5855 int i, j, loop;
5856 struct IOV_111 *iovPtr;
5857 struct fusion_context *fusion;
5858 bool intr_coalescing;
5859 unsigned int num_msix_req;
5860 u16 lnksta, speed;
5861
5862 fusion = instance->ctrl_context;
5863
5864 /* Find first memory bar */
5865 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5866 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5867 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5868 "megasas: LSI")) {
5869 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5870 return -EBUSY;
5871 }
5872
5873 base_addr = pci_resource_start(instance->pdev, instance->bar);
5874 instance->reg_set = ioremap_nocache(base_addr, 8192);
5875
5876 if (!instance->reg_set) {
5877 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5878 goto fail_ioremap;
5879 }
5880
5881 base_addr_phys = &base_addr;
5882 dev_printk(KERN_DEBUG, &instance->pdev->dev,
5883 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
5884 instance->bar, base_addr_phys, instance->reg_set);
5885
5886 if (instance->adapter_type != MFI_SERIES)
5887 instance->instancet = &megasas_instance_template_fusion;
5888 else {
5889 switch (instance->pdev->device) {
5890 case PCI_DEVICE_ID_LSI_SAS1078R:
5891 case PCI_DEVICE_ID_LSI_SAS1078DE:
5892 instance->instancet = &megasas_instance_template_ppc;
5893 break;
5894 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5895 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5896 instance->instancet = &megasas_instance_template_gen2;
5897 break;
5898 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5899 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5900 instance->instancet = &megasas_instance_template_skinny;
5901 break;
5902 case PCI_DEVICE_ID_LSI_SAS1064R:
5903 case PCI_DEVICE_ID_DELL_PERC5:
5904 default:
5905 instance->instancet = &megasas_instance_template_xscale;
5906 instance->pd_list_not_supported = 1;
5907 break;
5908 }
5909 }
5910
5911 if (megasas_transition_to_ready(instance, 0)) {
5912 dev_info(&instance->pdev->dev,
5913 "Failed to transition controller to ready from %s!\n",
5914 __func__);
5915 if (instance->adapter_type != MFI_SERIES) {
5916 status_reg = instance->instancet->read_fw_status_reg(
5917 instance);
5918 if (status_reg & MFI_RESET_ADAPTER) {
5919 if (megasas_adp_reset_wait_for_ready
5920 (instance, true, 0) == FAILED)
5921 goto fail_ready_state;
5922 } else {
5923 goto fail_ready_state;
5924 }
5925 } else {
5926 atomic_set(&instance->fw_reset_no_pci_access, 1);
5927 instance->instancet->adp_reset
5928 (instance, instance->reg_set);
5929 atomic_set(&instance->fw_reset_no_pci_access, 0);
5930
5931 /*waiting for about 30 second before retry*/
5932 ssleep(30);
5933
5934 if (megasas_transition_to_ready(instance, 0))
5935 goto fail_ready_state;
5936 }
5937
5938 dev_info(&instance->pdev->dev,
5939 "FW restarted successfully from %s!\n",
5940 __func__);
5941 }
5942
5943 megasas_init_ctrl_params(instance);
5944
5945 if (megasas_set_dma_mask(instance))
5946 goto fail_ready_state;
5947
5948 if (megasas_alloc_ctrl_mem(instance))
5949 goto fail_alloc_dma_buf;
5950
5951 if (megasas_alloc_ctrl_dma_buffers(instance))
5952 goto fail_alloc_dma_buf;
5953
5954 fusion = instance->ctrl_context;
5955
5956 if (instance->adapter_type >= VENTURA_SERIES) {
5957 scratch_pad_2 =
5958 megasas_readl(instance,
5959 &instance->reg_set->outbound_scratch_pad_2);
5960 instance->max_raid_mapsize = ((scratch_pad_2 >>
5961 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5962 MR_MAX_RAID_MAP_SIZE_MASK);
5963 }
5964
5965 instance->enable_sdev_max_qd = enable_sdev_max_qd;
5966
5967 switch (instance->adapter_type) {
5968 case VENTURA_SERIES:
5969 fusion->pcie_bw_limitation = true;
5970 break;
5971 case AERO_SERIES:
5972 fusion->r56_div_offload = true;
5973 break;
5974 default:
5975 break;
5976 }
5977
5978 /* Check if MSI-X is supported while in ready state */
5979 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5980 0x4000000) >> 0x1a;
5981 if (msix_enable && !msix_disable) {
5982
5983 scratch_pad_1 = megasas_readl
5984 (instance, &instance->reg_set->outbound_scratch_pad_1);
5985 /* Check max MSI-X vectors */
5986 if (fusion) {
5987 if (instance->adapter_type == THUNDERBOLT_SERIES) {
5988 /* Thunderbolt Series*/
5989 instance->msix_vectors = (scratch_pad_1
5990 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5991 } else {
5992 instance->msix_vectors = ((scratch_pad_1
5993 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5994 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5995
5996 /*
5997 * For Invader series, > 8 MSI-x vectors
5998 * supported by FW/HW implies combined
5999 * reply queue mode is enabled.
6000 * For Ventura series, > 16 MSI-x vectors
6001 * supported by FW/HW implies combined
6002 * reply queue mode is enabled.
6003 */
6004 switch (instance->adapter_type) {
6005 case INVADER_SERIES:
6006 if (instance->msix_vectors > 8)
6007 instance->msix_combined = true;
6008 break;
6009 case AERO_SERIES:
6010 case VENTURA_SERIES:
6011 if (instance->msix_vectors > 16)
6012 instance->msix_combined = true;
6013 break;
6014 }
6015
6016 if (rdpq_enable)
6017 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6018 1 : 0;
6019
6020 if (instance->adapter_type >= INVADER_SERIES &&
6021 !instance->msix_combined) {
6022 instance->msix_load_balance = true;
6023 instance->smp_affinity_enable = false;
6024 }
6025
6026 /* Save 1-15 reply post index address to local memory
6027 * Index 0 is already saved from reg offset
6028 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6029 */
6030 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6031 instance->reply_post_host_index_addr[loop] =
6032 (u32 __iomem *)
6033 ((u8 __iomem *)instance->reg_set +
6034 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6035 + (loop * 0x10));
6036 }
6037 }
6038
6039 dev_info(&instance->pdev->dev,
6040 "firmware supports msix\t: (%d)",
6041 instance->msix_vectors);
6042 if (msix_vectors)
6043 instance->msix_vectors = min(msix_vectors,
6044 instance->msix_vectors);
6045 } else /* MFI adapters */
6046 instance->msix_vectors = 1;
6047
6048
6049 /*
6050 * For Aero (if some conditions are met), driver will configure a
6051 * few additional reply queues with interrupt coalescing enabled.
6052 * These queues with interrupt coalescing enabled are called
6053 * High IOPS queues and rest of reply queues (based on number of
6054 * logical CPUs) are termed as Low latency queues.
6055 *
6056 * Total Number of reply queues = High IOPS queues + low latency queues
6057 *
6058 * For rest of fusion adapters, 1 additional reply queue will be
6059 * reserved for management commands, rest of reply queues
6060 * (based on number of logical CPUs) will be used for IOs and
6061 * referenced as IO queues.
6062 * Total Number of reply queues = 1 + IO queues
6063 *
6064 * MFI adapters supports single MSI-x so single reply queue
6065 * will be used for IO and management commands.
6066 */
6067
6068 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6069 true : false;
6070 if (intr_coalescing &&
6071 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6072 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6073 instance->perf_mode = MR_BALANCED_PERF_MODE;
6074 else
6075 instance->perf_mode = MR_LATENCY_PERF_MODE;
6076
6077
6078 if (instance->adapter_type == AERO_SERIES) {
6079 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6080 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6081
6082 /*
6083 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6084 * in latency perf mode and enable R1 PCI bandwidth algorithm
6085 */
6086 if (speed < 0x4) {
6087 instance->perf_mode = MR_LATENCY_PERF_MODE;
6088 fusion->pcie_bw_limitation = true;
6089 }
6090
6091 /*
6092 * Performance mode settings provided through module parameter-perf_mode will
6093 * take affect only for:
6094 * 1. Aero family of adapters.
6095 * 2. When user sets module parameter- perf_mode in range of 0-2.
6096 */
6097 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6098 (perf_mode <= MR_LATENCY_PERF_MODE))
6099 instance->perf_mode = perf_mode;
6100 /*
6101 * If intr coalescing is not supported by controller FW, then IOPS
6102 * and Balanced modes are not feasible.
6103 */
6104 if (!intr_coalescing)
6105 instance->perf_mode = MR_LATENCY_PERF_MODE;
6106
6107 }
6108
6109 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6110 instance->low_latency_index_start =
6111 MR_HIGH_IOPS_QUEUE_COUNT;
6112 else
6113 instance->low_latency_index_start = 1;
6114
6115 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6116
6117 instance->msix_vectors = min(num_msix_req,
6118 instance->msix_vectors);
6119
6120 megasas_alloc_irq_vectors(instance);
6121 if (!instance->msix_vectors)
6122 instance->msix_load_balance = false;
6123 }
6124 /*
6125 * MSI-X host index 0 is common for all adapter.
6126 * It is used for all MPT based Adapters.
6127 */
6128 if (instance->msix_combined) {
6129 instance->reply_post_host_index_addr[0] =
6130 (u32 *)((u8 *)instance->reg_set +
6131 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6132 } else {
6133 instance->reply_post_host_index_addr[0] =
6134 (u32 *)((u8 *)instance->reg_set +
6135 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6136 }
6137
6138 if (!instance->msix_vectors) {
6139 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6140 if (i < 0)
6141 goto fail_init_adapter;
6142 }
6143
6144 megasas_setup_reply_map(instance);
6145
6146 dev_info(&instance->pdev->dev,
6147 "current msix/online cpus\t: (%d/%d)\n",
6148 instance->msix_vectors, (unsigned int)num_online_cpus());
6149 dev_info(&instance->pdev->dev,
6150 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6151
6152 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6153 (unsigned long)instance);
6154
6155 /*
6156 * Below are default value for legacy Firmware.
6157 * non-fusion based controllers
6158 */
6159 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6160 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6161 /* Get operational params, sge flags, send init cmd to controller */
6162 if (instance->instancet->init_adapter(instance))
6163 goto fail_init_adapter;
6164
6165 if (instance->adapter_type >= VENTURA_SERIES) {
6166 scratch_pad_3 =
6167 megasas_readl(instance,
6168 &instance->reg_set->outbound_scratch_pad_3);
6169 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6170 MR_DEFAULT_NVME_PAGE_SHIFT)
6171 instance->nvme_page_size =
6172 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6173
6174 dev_info(&instance->pdev->dev,
6175 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6176 }
6177
6178 if (instance->msix_vectors ?
6179 megasas_setup_irqs_msix(instance, 1) :
6180 megasas_setup_irqs_ioapic(instance))
6181 goto fail_init_adapter;
6182
6183 if (instance->adapter_type != MFI_SERIES)
6184 megasas_setup_irq_poll(instance);
6185
6186 instance->instancet->enable_intr(instance);
6187
6188 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6189
6190 megasas_setup_jbod_map(instance);
6191
6192 if (megasas_get_device_list(instance) != SUCCESS) {
6193 dev_err(&instance->pdev->dev,
6194 "%s: megasas_get_device_list failed\n",
6195 __func__);
6196 goto fail_get_ld_pd_list;
6197 }
6198
6199 /* stream detection initialization */
6200 if (instance->adapter_type >= VENTURA_SERIES) {
6201 fusion->stream_detect_by_ld =
6202 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6203 sizeof(struct LD_STREAM_DETECT *),
6204 GFP_KERNEL);
6205 if (!fusion->stream_detect_by_ld) {
6206 dev_err(&instance->pdev->dev,
6207 "unable to allocate stream detection for pool of LDs\n");
6208 goto fail_get_ld_pd_list;
6209 }
6210 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6211 fusion->stream_detect_by_ld[i] =
6212 kzalloc(sizeof(struct LD_STREAM_DETECT),
6213 GFP_KERNEL);
6214 if (!fusion->stream_detect_by_ld[i]) {
6215 dev_err(&instance->pdev->dev,
6216 "unable to allocate stream detect by LD\n ");
6217 for (j = 0; j < i; ++j)
6218 kfree(fusion->stream_detect_by_ld[j]);
6219 kfree(fusion->stream_detect_by_ld);
6220 fusion->stream_detect_by_ld = NULL;
6221 goto fail_get_ld_pd_list;
6222 }
6223 fusion->stream_detect_by_ld[i]->mru_bit_map
6224 = MR_STREAM_BITMAP;
6225 }
6226 }
6227
6228 /*
6229 * Compute the max allowed sectors per IO: The controller info has two
6230 * limits on max sectors. Driver should use the minimum of these two.
6231 *
6232 * 1 << stripe_sz_ops.min = max sectors per strip
6233 *
6234 * Note that older firmwares ( < FW ver 30) didn't report information
6235 * to calculate max_sectors_1. So the number ended up as zero always.
6236 */
6237 tmp_sectors = 0;
6238 ctrl_info = instance->ctrl_info_buf;
6239
6240 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6241 le16_to_cpu(ctrl_info->max_strips_per_io);
6242 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6243
6244 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6245
6246 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6247 instance->passive = ctrl_info->cluster.passive;
6248 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6249 instance->UnevenSpanSupport =
6250 ctrl_info->adapterOperations2.supportUnevenSpans;
6251 if (instance->UnevenSpanSupport) {
6252 struct fusion_context *fusion = instance->ctrl_context;
6253 if (MR_ValidateMapInfo(instance, instance->map_id))
6254 fusion->fast_path_io = 1;
6255 else
6256 fusion->fast_path_io = 0;
6257
6258 }
6259 if (ctrl_info->host_interface.SRIOV) {
6260 instance->requestorId = ctrl_info->iov.requestorId;
6261 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6262 if (!ctrl_info->adapterOperations2.activePassive)
6263 instance->PlasmaFW111 = 1;
6264
6265 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6266 instance->PlasmaFW111 ? "1.11" : "new");
6267
6268 if (instance->PlasmaFW111) {
6269 iovPtr = (struct IOV_111 *)
6270 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6271 instance->requestorId = iovPtr->requestorId;
6272 }
6273 }
6274 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6275 instance->requestorId);
6276 }
6277
6278 instance->crash_dump_fw_support =
6279 ctrl_info->adapterOperations3.supportCrashDump;
6280 instance->crash_dump_drv_support =
6281 (instance->crash_dump_fw_support &&
6282 instance->crash_dump_buf);
6283 if (instance->crash_dump_drv_support)
6284 megasas_set_crash_dump_params(instance,
6285 MR_CRASH_BUF_TURN_OFF);
6286
6287 else {
6288 if (instance->crash_dump_buf)
6289 dma_free_coherent(&instance->pdev->dev,
6290 CRASH_DMA_BUF_SIZE,
6291 instance->crash_dump_buf,
6292 instance->crash_dump_h);
6293 instance->crash_dump_buf = NULL;
6294 }
6295
6296 if (instance->snapdump_wait_time) {
6297 megasas_get_snapdump_properties(instance);
6298 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6299 instance->snapdump_wait_time);
6300 }
6301
6302 dev_info(&instance->pdev->dev,
6303 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6304 le16_to_cpu(ctrl_info->pci.vendor_id),
6305 le16_to_cpu(ctrl_info->pci.device_id),
6306 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6307 le16_to_cpu(ctrl_info->pci.sub_device_id));
6308 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6309 instance->UnevenSpanSupport ? "yes" : "no");
6310 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6311 instance->crash_dump_drv_support ? "yes" : "no");
6312 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6313 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6314
6315 instance->max_sectors_per_req = instance->max_num_sge *
6316 SGE_BUFFER_SIZE / 512;
6317 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6318 instance->max_sectors_per_req = tmp_sectors;
6319
6320 /* Check for valid throttlequeuedepth module parameter */
6321 if (throttlequeuedepth &&
6322 throttlequeuedepth <= instance->max_scsi_cmds)
6323 instance->throttlequeuedepth = throttlequeuedepth;
6324 else
6325 instance->throttlequeuedepth =
6326 MEGASAS_THROTTLE_QUEUE_DEPTH;
6327
6328 if ((resetwaittime < 1) ||
6329 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6330 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6331
6332 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6333 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6334
6335 /* Launch SR-IOV heartbeat timer */
6336 if (instance->requestorId) {
6337 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6338 megasas_start_timer(instance);
6339 } else {
6340 instance->skip_heartbeat_timer_del = 1;
6341 goto fail_get_ld_pd_list;
6342 }
6343 }
6344
6345 /*
6346 * Create and start watchdog thread which will monitor
6347 * controller state every 1 sec and trigger OCR when
6348 * it enters fault state
6349 */
6350 if (instance->adapter_type != MFI_SERIES)
6351 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6352 goto fail_start_watchdog;
6353
6354 return 0;
6355
6356 fail_start_watchdog:
6357 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6358 del_timer_sync(&instance->sriov_heartbeat_timer);
6359 fail_get_ld_pd_list:
6360 instance->instancet->disable_intr(instance);
6361 megasas_destroy_irqs(instance);
6362 fail_init_adapter:
6363 if (instance->msix_vectors)
6364 pci_free_irq_vectors(instance->pdev);
6365 instance->msix_vectors = 0;
6366 fail_alloc_dma_buf:
6367 megasas_free_ctrl_dma_buffers(instance);
6368 megasas_free_ctrl_mem(instance);
6369 fail_ready_state:
6370 iounmap(instance->reg_set);
6371
6372 fail_ioremap:
6373 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6374
6375 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6376 __func__, __LINE__);
6377 return -EINVAL;
6378 }
6379
6380 /**
6381 * megasas_release_mfi - Reverses the FW initialization
6382 * @instance: Adapter soft state
6383 */
megasas_release_mfi(struct megasas_instance * instance)6384 static void megasas_release_mfi(struct megasas_instance *instance)
6385 {
6386 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6387
6388 if (instance->reply_queue)
6389 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6390 instance->reply_queue, instance->reply_queue_h);
6391
6392 megasas_free_cmds(instance);
6393
6394 iounmap(instance->reg_set);
6395
6396 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6397 }
6398
6399 /**
6400 * megasas_get_seq_num - Gets latest event sequence numbers
6401 * @instance: Adapter soft state
6402 * @eli: FW event log sequence numbers information
6403 *
6404 * FW maintains a log of all events in a non-volatile area. Upper layers would
6405 * usually find out the latest sequence number of the events, the seq number at
6406 * the boot etc. They would "read" all the events below the latest seq number
6407 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6408 * number), they would subsribe to AEN (asynchronous event notification) and
6409 * wait for the events to happen.
6410 */
6411 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6412 megasas_get_seq_num(struct megasas_instance *instance,
6413 struct megasas_evt_log_info *eli)
6414 {
6415 struct megasas_cmd *cmd;
6416 struct megasas_dcmd_frame *dcmd;
6417 struct megasas_evt_log_info *el_info;
6418 dma_addr_t el_info_h = 0;
6419 int ret;
6420
6421 cmd = megasas_get_cmd(instance);
6422
6423 if (!cmd) {
6424 return -ENOMEM;
6425 }
6426
6427 dcmd = &cmd->frame->dcmd;
6428 el_info = dma_alloc_coherent(&instance->pdev->dev,
6429 sizeof(struct megasas_evt_log_info),
6430 &el_info_h, GFP_KERNEL);
6431 if (!el_info) {
6432 megasas_return_cmd(instance, cmd);
6433 return -ENOMEM;
6434 }
6435
6436 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6437
6438 dcmd->cmd = MFI_CMD_DCMD;
6439 dcmd->cmd_status = 0x0;
6440 dcmd->sge_count = 1;
6441 dcmd->flags = MFI_FRAME_DIR_READ;
6442 dcmd->timeout = 0;
6443 dcmd->pad_0 = 0;
6444 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6445 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6446
6447 megasas_set_dma_settings(instance, dcmd, el_info_h,
6448 sizeof(struct megasas_evt_log_info));
6449
6450 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6451 if (ret != DCMD_SUCCESS) {
6452 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6453 __func__, __LINE__);
6454 goto dcmd_failed;
6455 }
6456
6457 /*
6458 * Copy the data back into callers buffer
6459 */
6460 eli->newest_seq_num = el_info->newest_seq_num;
6461 eli->oldest_seq_num = el_info->oldest_seq_num;
6462 eli->clear_seq_num = el_info->clear_seq_num;
6463 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6464 eli->boot_seq_num = el_info->boot_seq_num;
6465
6466 dcmd_failed:
6467 dma_free_coherent(&instance->pdev->dev,
6468 sizeof(struct megasas_evt_log_info),
6469 el_info, el_info_h);
6470
6471 megasas_return_cmd(instance, cmd);
6472
6473 return ret;
6474 }
6475
6476 /**
6477 * megasas_register_aen - Registers for asynchronous event notification
6478 * @instance: Adapter soft state
6479 * @seq_num: The starting sequence number
6480 * @class_locale: Class of the event
6481 *
6482 * This function subscribes for AEN for events beyond the @seq_num. It requests
6483 * to be notified if and only if the event is of type @class_locale
6484 */
6485 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6486 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6487 u32 class_locale_word)
6488 {
6489 int ret_val;
6490 struct megasas_cmd *cmd;
6491 struct megasas_dcmd_frame *dcmd;
6492 union megasas_evt_class_locale curr_aen;
6493 union megasas_evt_class_locale prev_aen;
6494
6495 /*
6496 * If there an AEN pending already (aen_cmd), check if the
6497 * class_locale of that pending AEN is inclusive of the new
6498 * AEN request we currently have. If it is, then we don't have
6499 * to do anything. In other words, whichever events the current
6500 * AEN request is subscribing to, have already been subscribed
6501 * to.
6502 *
6503 * If the old_cmd is _not_ inclusive, then we have to abort
6504 * that command, form a class_locale that is superset of both
6505 * old and current and re-issue to the FW
6506 */
6507
6508 curr_aen.word = class_locale_word;
6509
6510 if (instance->aen_cmd) {
6511
6512 prev_aen.word =
6513 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6514
6515 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6516 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6517 dev_info(&instance->pdev->dev,
6518 "%s %d out of range class %d send by application\n",
6519 __func__, __LINE__, curr_aen.members.class);
6520 return 0;
6521 }
6522
6523 /*
6524 * A class whose enum value is smaller is inclusive of all
6525 * higher values. If a PROGRESS (= -1) was previously
6526 * registered, then a new registration requests for higher
6527 * classes need not be sent to FW. They are automatically
6528 * included.
6529 *
6530 * Locale numbers don't have such hierarchy. They are bitmap
6531 * values
6532 */
6533 if ((prev_aen.members.class <= curr_aen.members.class) &&
6534 !((prev_aen.members.locale & curr_aen.members.locale) ^
6535 curr_aen.members.locale)) {
6536 /*
6537 * Previously issued event registration includes
6538 * current request. Nothing to do.
6539 */
6540 return 0;
6541 } else {
6542 curr_aen.members.locale |= prev_aen.members.locale;
6543
6544 if (prev_aen.members.class < curr_aen.members.class)
6545 curr_aen.members.class = prev_aen.members.class;
6546
6547 instance->aen_cmd->abort_aen = 1;
6548 ret_val = megasas_issue_blocked_abort_cmd(instance,
6549 instance->
6550 aen_cmd, 30);
6551
6552 if (ret_val) {
6553 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6554 "previous AEN command\n");
6555 return ret_val;
6556 }
6557 }
6558 }
6559
6560 cmd = megasas_get_cmd(instance);
6561
6562 if (!cmd)
6563 return -ENOMEM;
6564
6565 dcmd = &cmd->frame->dcmd;
6566
6567 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6568
6569 /*
6570 * Prepare DCMD for aen registration
6571 */
6572 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6573
6574 dcmd->cmd = MFI_CMD_DCMD;
6575 dcmd->cmd_status = 0x0;
6576 dcmd->sge_count = 1;
6577 dcmd->flags = MFI_FRAME_DIR_READ;
6578 dcmd->timeout = 0;
6579 dcmd->pad_0 = 0;
6580 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6581 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6582 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6583 instance->last_seq_num = seq_num;
6584 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6585
6586 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6587 sizeof(struct megasas_evt_detail));
6588
6589 if (instance->aen_cmd != NULL) {
6590 megasas_return_cmd(instance, cmd);
6591 return 0;
6592 }
6593
6594 /*
6595 * Store reference to the cmd used to register for AEN. When an
6596 * application wants us to register for AEN, we have to abort this
6597 * cmd and re-register with a new EVENT LOCALE supplied by that app
6598 */
6599 instance->aen_cmd = cmd;
6600
6601 /*
6602 * Issue the aen registration frame
6603 */
6604 instance->instancet->issue_dcmd(instance, cmd);
6605
6606 return 0;
6607 }
6608
6609 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6610 *
6611 * This DCMD will fetch few properties of LD/system PD defined
6612 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6613 *
6614 * DCMD send by drivers whenever new target is added to the OS.
6615 *
6616 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6617 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6618 * 0 = system PD, 1 = LD.
6619 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6620 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6621 *
6622 * @instance: Adapter soft state
6623 * @sdev: OS provided scsi device
6624 *
6625 * Returns 0 on success non-zero on failure.
6626 */
6627 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6628 megasas_get_target_prop(struct megasas_instance *instance,
6629 struct scsi_device *sdev)
6630 {
6631 int ret;
6632 struct megasas_cmd *cmd;
6633 struct megasas_dcmd_frame *dcmd;
6634 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6635 sdev->id;
6636
6637 cmd = megasas_get_cmd(instance);
6638
6639 if (!cmd) {
6640 dev_err(&instance->pdev->dev,
6641 "Failed to get cmd %s\n", __func__);
6642 return -ENOMEM;
6643 }
6644
6645 dcmd = &cmd->frame->dcmd;
6646
6647 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6648 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6649 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6650
6651 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6652 dcmd->cmd = MFI_CMD_DCMD;
6653 dcmd->cmd_status = 0xFF;
6654 dcmd->sge_count = 1;
6655 dcmd->flags = MFI_FRAME_DIR_READ;
6656 dcmd->timeout = 0;
6657 dcmd->pad_0 = 0;
6658 dcmd->data_xfer_len =
6659 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6660 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6661
6662 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6663 sizeof(struct MR_TARGET_PROPERTIES));
6664
6665 if ((instance->adapter_type != MFI_SERIES) &&
6666 !instance->mask_interrupts)
6667 ret = megasas_issue_blocked_cmd(instance,
6668 cmd, MFI_IO_TIMEOUT_SECS);
6669 else
6670 ret = megasas_issue_polled(instance, cmd);
6671
6672 switch (ret) {
6673 case DCMD_TIMEOUT:
6674 switch (dcmd_timeout_ocr_possible(instance)) {
6675 case INITIATE_OCR:
6676 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6677 mutex_unlock(&instance->reset_mutex);
6678 megasas_reset_fusion(instance->host,
6679 MFI_IO_TIMEOUT_OCR);
6680 mutex_lock(&instance->reset_mutex);
6681 break;
6682 case KILL_ADAPTER:
6683 megaraid_sas_kill_hba(instance);
6684 break;
6685 case IGNORE_TIMEOUT:
6686 dev_info(&instance->pdev->dev,
6687 "Ignore DCMD timeout: %s %d\n",
6688 __func__, __LINE__);
6689 break;
6690 }
6691 break;
6692
6693 default:
6694 megasas_return_cmd(instance, cmd);
6695 }
6696 if (ret != DCMD_SUCCESS)
6697 dev_err(&instance->pdev->dev,
6698 "return from %s %d return value %d\n",
6699 __func__, __LINE__, ret);
6700
6701 return ret;
6702 }
6703
6704 /**
6705 * megasas_start_aen - Subscribes to AEN during driver load time
6706 * @instance: Adapter soft state
6707 */
megasas_start_aen(struct megasas_instance * instance)6708 static int megasas_start_aen(struct megasas_instance *instance)
6709 {
6710 struct megasas_evt_log_info eli;
6711 union megasas_evt_class_locale class_locale;
6712
6713 /*
6714 * Get the latest sequence number from FW
6715 */
6716 memset(&eli, 0, sizeof(eli));
6717
6718 if (megasas_get_seq_num(instance, &eli))
6719 return -1;
6720
6721 /*
6722 * Register AEN with FW for latest sequence number plus 1
6723 */
6724 class_locale.members.reserved = 0;
6725 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6726 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6727
6728 return megasas_register_aen(instance,
6729 le32_to_cpu(eli.newest_seq_num) + 1,
6730 class_locale.word);
6731 }
6732
6733 /**
6734 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6735 * @instance: Adapter soft state
6736 */
megasas_io_attach(struct megasas_instance * instance)6737 static int megasas_io_attach(struct megasas_instance *instance)
6738 {
6739 struct Scsi_Host *host = instance->host;
6740
6741 /*
6742 * Export parameters required by SCSI mid-layer
6743 */
6744 host->unique_id = instance->unique_id;
6745 host->can_queue = instance->max_scsi_cmds;
6746 host->this_id = instance->init_id;
6747 host->sg_tablesize = instance->max_num_sge;
6748
6749 if (instance->fw_support_ieee)
6750 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6751
6752 /*
6753 * Check if the module parameter value for max_sectors can be used
6754 */
6755 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6756 instance->max_sectors_per_req = max_sectors;
6757 else {
6758 if (max_sectors) {
6759 if (((instance->pdev->device ==
6760 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6761 (instance->pdev->device ==
6762 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6763 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6764 instance->max_sectors_per_req = max_sectors;
6765 } else {
6766 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6767 "and <= %d (or < 1MB for GEN2 controller)\n",
6768 instance->max_sectors_per_req);
6769 }
6770 }
6771 }
6772
6773 host->max_sectors = instance->max_sectors_per_req;
6774 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6775 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6776 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6777 host->max_lun = MEGASAS_MAX_LUN;
6778 host->max_cmd_len = 16;
6779
6780 /*
6781 * Notify the mid-layer about the new controller
6782 */
6783 if (scsi_add_host(host, &instance->pdev->dev)) {
6784 dev_err(&instance->pdev->dev,
6785 "Failed to add host from %s %d\n",
6786 __func__, __LINE__);
6787 return -ENODEV;
6788 }
6789
6790 return 0;
6791 }
6792
6793 /**
6794 * megasas_set_dma_mask - Set DMA mask for supported controllers
6795 *
6796 * @instance: Adapter soft state
6797 * Description:
6798 *
6799 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6800 *
6801 * For invader-
6802 * By default, driver/FW will operate in 32bit DMA addresses
6803 * for consistent DMA mapping but if 32 bit consistent
6804 * DMA mask fails, driver will try with 63 bit consistent
6805 * mask provided FW is true 63bit DMA capable
6806 *
6807 * For older controllers(Thunderbolt and MFI based adapters)-
6808 * driver/FW will operate in 32 bit consistent DMA addresses.
6809 */
6810 static int
megasas_set_dma_mask(struct megasas_instance * instance)6811 megasas_set_dma_mask(struct megasas_instance *instance)
6812 {
6813 u64 consistent_mask;
6814 struct pci_dev *pdev;
6815 u32 scratch_pad_1;
6816
6817 pdev = instance->pdev;
6818 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6819 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6820
6821 if (IS_DMA64) {
6822 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6823 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6824 goto fail_set_dma_mask;
6825
6826 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6827 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6828 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6829 /*
6830 * If 32 bit DMA mask fails, then try for 64 bit mask
6831 * for FW capable of handling 64 bit DMA.
6832 */
6833 scratch_pad_1 = megasas_readl
6834 (instance, &instance->reg_set->outbound_scratch_pad_1);
6835
6836 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6837 goto fail_set_dma_mask;
6838 else if (dma_set_mask_and_coherent(&pdev->dev,
6839 DMA_BIT_MASK(63)))
6840 goto fail_set_dma_mask;
6841 }
6842 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6843 goto fail_set_dma_mask;
6844
6845 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6846 instance->consistent_mask_64bit = false;
6847 else
6848 instance->consistent_mask_64bit = true;
6849
6850 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6851 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6852 (instance->consistent_mask_64bit ? "63" : "32"));
6853
6854 return 0;
6855
6856 fail_set_dma_mask:
6857 dev_err(&pdev->dev, "Failed to set DMA mask\n");
6858 return -1;
6859
6860 }
6861
6862 /*
6863 * megasas_set_adapter_type - Set adapter type.
6864 * Supported controllers can be divided in
6865 * different categories-
6866 * enum MR_ADAPTER_TYPE {
6867 * MFI_SERIES = 1,
6868 * THUNDERBOLT_SERIES = 2,
6869 * INVADER_SERIES = 3,
6870 * VENTURA_SERIES = 4,
6871 * AERO_SERIES = 5,
6872 * };
6873 * @instance: Adapter soft state
6874 * return: void
6875 */
megasas_set_adapter_type(struct megasas_instance * instance)6876 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6877 {
6878 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6879 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6880 instance->adapter_type = MFI_SERIES;
6881 } else {
6882 switch (instance->pdev->device) {
6883 case PCI_DEVICE_ID_LSI_AERO_10E1:
6884 case PCI_DEVICE_ID_LSI_AERO_10E2:
6885 case PCI_DEVICE_ID_LSI_AERO_10E5:
6886 case PCI_DEVICE_ID_LSI_AERO_10E6:
6887 instance->adapter_type = AERO_SERIES;
6888 break;
6889 case PCI_DEVICE_ID_LSI_VENTURA:
6890 case PCI_DEVICE_ID_LSI_CRUSADER:
6891 case PCI_DEVICE_ID_LSI_HARPOON:
6892 case PCI_DEVICE_ID_LSI_TOMCAT:
6893 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6894 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6895 instance->adapter_type = VENTURA_SERIES;
6896 break;
6897 case PCI_DEVICE_ID_LSI_FUSION:
6898 case PCI_DEVICE_ID_LSI_PLASMA:
6899 instance->adapter_type = THUNDERBOLT_SERIES;
6900 break;
6901 case PCI_DEVICE_ID_LSI_INVADER:
6902 case PCI_DEVICE_ID_LSI_INTRUDER:
6903 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6904 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6905 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6906 case PCI_DEVICE_ID_LSI_FURY:
6907 instance->adapter_type = INVADER_SERIES;
6908 break;
6909 default: /* For all other supported controllers */
6910 instance->adapter_type = MFI_SERIES;
6911 break;
6912 }
6913 }
6914 }
6915
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)6916 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6917 {
6918 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6919 sizeof(u32), &instance->producer_h, GFP_KERNEL);
6920 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6921 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6922
6923 if (!instance->producer || !instance->consumer) {
6924 dev_err(&instance->pdev->dev,
6925 "Failed to allocate memory for producer, consumer\n");
6926 return -1;
6927 }
6928
6929 *instance->producer = 0;
6930 *instance->consumer = 0;
6931 return 0;
6932 }
6933
6934 /**
6935 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
6936 * structures which are not common across MFI
6937 * adapters and fusion adapters.
6938 * For MFI based adapters, allocate producer and
6939 * consumer buffers. For fusion adapters, allocate
6940 * memory for fusion context.
6941 * @instance: Adapter soft state
6942 * return: 0 for SUCCESS
6943 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)6944 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6945 {
6946 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6947 GFP_KERNEL);
6948 if (!instance->reply_map)
6949 return -ENOMEM;
6950
6951 switch (instance->adapter_type) {
6952 case MFI_SERIES:
6953 if (megasas_alloc_mfi_ctrl_mem(instance))
6954 goto fail;
6955 break;
6956 case AERO_SERIES:
6957 case VENTURA_SERIES:
6958 case THUNDERBOLT_SERIES:
6959 case INVADER_SERIES:
6960 if (megasas_alloc_fusion_context(instance))
6961 goto fail;
6962 break;
6963 }
6964
6965 return 0;
6966 fail:
6967 kfree(instance->reply_map);
6968 instance->reply_map = NULL;
6969 return -ENOMEM;
6970 }
6971
6972 /*
6973 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
6974 * producer, consumer buffers for MFI adapters
6975 *
6976 * @instance - Adapter soft instance
6977 *
6978 */
megasas_free_ctrl_mem(struct megasas_instance * instance)6979 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6980 {
6981 kfree(instance->reply_map);
6982 if (instance->adapter_type == MFI_SERIES) {
6983 if (instance->producer)
6984 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6985 instance->producer,
6986 instance->producer_h);
6987 if (instance->consumer)
6988 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6989 instance->consumer,
6990 instance->consumer_h);
6991 } else {
6992 megasas_free_fusion_context(instance);
6993 }
6994 }
6995
6996 /**
6997 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
6998 * driver load time
6999 *
7000 * @instance- Adapter soft instance
7001 * @return- O for SUCCESS
7002 */
7003 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7004 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7005 {
7006 struct pci_dev *pdev = instance->pdev;
7007 struct fusion_context *fusion = instance->ctrl_context;
7008
7009 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7010 sizeof(struct megasas_evt_detail),
7011 &instance->evt_detail_h, GFP_KERNEL);
7012
7013 if (!instance->evt_detail) {
7014 dev_err(&instance->pdev->dev,
7015 "Failed to allocate event detail buffer\n");
7016 return -ENOMEM;
7017 }
7018
7019 if (fusion) {
7020 fusion->ioc_init_request =
7021 dma_alloc_coherent(&pdev->dev,
7022 sizeof(struct MPI2_IOC_INIT_REQUEST),
7023 &fusion->ioc_init_request_phys,
7024 GFP_KERNEL);
7025
7026 if (!fusion->ioc_init_request) {
7027 dev_err(&pdev->dev,
7028 "Failed to allocate PD list buffer\n");
7029 return -ENOMEM;
7030 }
7031
7032 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7033 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7034 &instance->snapdump_prop_h, GFP_KERNEL);
7035
7036 if (!instance->snapdump_prop)
7037 dev_err(&pdev->dev,
7038 "Failed to allocate snapdump properties buffer\n");
7039
7040 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7041 HOST_DEVICE_LIST_SZ,
7042 &instance->host_device_list_buf_h,
7043 GFP_KERNEL);
7044
7045 if (!instance->host_device_list_buf) {
7046 dev_err(&pdev->dev,
7047 "Failed to allocate targetid list buffer\n");
7048 return -ENOMEM;
7049 }
7050
7051 }
7052
7053 instance->pd_list_buf =
7054 dma_alloc_coherent(&pdev->dev,
7055 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7056 &instance->pd_list_buf_h, GFP_KERNEL);
7057
7058 if (!instance->pd_list_buf) {
7059 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7060 return -ENOMEM;
7061 }
7062
7063 instance->ctrl_info_buf =
7064 dma_alloc_coherent(&pdev->dev,
7065 sizeof(struct megasas_ctrl_info),
7066 &instance->ctrl_info_buf_h, GFP_KERNEL);
7067
7068 if (!instance->ctrl_info_buf) {
7069 dev_err(&pdev->dev,
7070 "Failed to allocate controller info buffer\n");
7071 return -ENOMEM;
7072 }
7073
7074 instance->ld_list_buf =
7075 dma_alloc_coherent(&pdev->dev,
7076 sizeof(struct MR_LD_LIST),
7077 &instance->ld_list_buf_h, GFP_KERNEL);
7078
7079 if (!instance->ld_list_buf) {
7080 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7081 return -ENOMEM;
7082 }
7083
7084 instance->ld_targetid_list_buf =
7085 dma_alloc_coherent(&pdev->dev,
7086 sizeof(struct MR_LD_TARGETID_LIST),
7087 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7088
7089 if (!instance->ld_targetid_list_buf) {
7090 dev_err(&pdev->dev,
7091 "Failed to allocate LD targetid list buffer\n");
7092 return -ENOMEM;
7093 }
7094
7095 if (!reset_devices) {
7096 instance->system_info_buf =
7097 dma_alloc_coherent(&pdev->dev,
7098 sizeof(struct MR_DRV_SYSTEM_INFO),
7099 &instance->system_info_h, GFP_KERNEL);
7100 instance->pd_info =
7101 dma_alloc_coherent(&pdev->dev,
7102 sizeof(struct MR_PD_INFO),
7103 &instance->pd_info_h, GFP_KERNEL);
7104 instance->tgt_prop =
7105 dma_alloc_coherent(&pdev->dev,
7106 sizeof(struct MR_TARGET_PROPERTIES),
7107 &instance->tgt_prop_h, GFP_KERNEL);
7108 instance->crash_dump_buf =
7109 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7110 &instance->crash_dump_h, GFP_KERNEL);
7111
7112 if (!instance->system_info_buf)
7113 dev_err(&instance->pdev->dev,
7114 "Failed to allocate system info buffer\n");
7115
7116 if (!instance->pd_info)
7117 dev_err(&instance->pdev->dev,
7118 "Failed to allocate pd_info buffer\n");
7119
7120 if (!instance->tgt_prop)
7121 dev_err(&instance->pdev->dev,
7122 "Failed to allocate tgt_prop buffer\n");
7123
7124 if (!instance->crash_dump_buf)
7125 dev_err(&instance->pdev->dev,
7126 "Failed to allocate crash dump buffer\n");
7127 }
7128
7129 return 0;
7130 }
7131
7132 /*
7133 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7134 * during driver load time
7135 *
7136 * @instance- Adapter soft instance
7137 *
7138 */
7139 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7140 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7141 {
7142 struct pci_dev *pdev = instance->pdev;
7143 struct fusion_context *fusion = instance->ctrl_context;
7144
7145 if (instance->evt_detail)
7146 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7147 instance->evt_detail,
7148 instance->evt_detail_h);
7149
7150 if (fusion && fusion->ioc_init_request)
7151 dma_free_coherent(&pdev->dev,
7152 sizeof(struct MPI2_IOC_INIT_REQUEST),
7153 fusion->ioc_init_request,
7154 fusion->ioc_init_request_phys);
7155
7156 if (instance->pd_list_buf)
7157 dma_free_coherent(&pdev->dev,
7158 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7159 instance->pd_list_buf,
7160 instance->pd_list_buf_h);
7161
7162 if (instance->ld_list_buf)
7163 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7164 instance->ld_list_buf,
7165 instance->ld_list_buf_h);
7166
7167 if (instance->ld_targetid_list_buf)
7168 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7169 instance->ld_targetid_list_buf,
7170 instance->ld_targetid_list_buf_h);
7171
7172 if (instance->ctrl_info_buf)
7173 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7174 instance->ctrl_info_buf,
7175 instance->ctrl_info_buf_h);
7176
7177 if (instance->system_info_buf)
7178 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7179 instance->system_info_buf,
7180 instance->system_info_h);
7181
7182 if (instance->pd_info)
7183 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7184 instance->pd_info, instance->pd_info_h);
7185
7186 if (instance->tgt_prop)
7187 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7188 instance->tgt_prop, instance->tgt_prop_h);
7189
7190 if (instance->crash_dump_buf)
7191 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7192 instance->crash_dump_buf,
7193 instance->crash_dump_h);
7194
7195 if (instance->snapdump_prop)
7196 dma_free_coherent(&pdev->dev,
7197 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7198 instance->snapdump_prop,
7199 instance->snapdump_prop_h);
7200
7201 if (instance->host_device_list_buf)
7202 dma_free_coherent(&pdev->dev,
7203 HOST_DEVICE_LIST_SZ,
7204 instance->host_device_list_buf,
7205 instance->host_device_list_buf_h);
7206
7207 }
7208
7209 /*
7210 * megasas_init_ctrl_params - Initialize controller's instance
7211 * parameters before FW init
7212 * @instance - Adapter soft instance
7213 * @return - void
7214 */
megasas_init_ctrl_params(struct megasas_instance * instance)7215 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7216 {
7217 instance->fw_crash_state = UNAVAILABLE;
7218
7219 megasas_poll_wait_aen = 0;
7220 instance->issuepend_done = 1;
7221 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7222
7223 /*
7224 * Initialize locks and queues
7225 */
7226 INIT_LIST_HEAD(&instance->cmd_pool);
7227 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7228
7229 atomic_set(&instance->fw_outstanding, 0);
7230 atomic64_set(&instance->total_io_count, 0);
7231
7232 init_waitqueue_head(&instance->int_cmd_wait_q);
7233 init_waitqueue_head(&instance->abort_cmd_wait_q);
7234
7235 spin_lock_init(&instance->crashdump_lock);
7236 spin_lock_init(&instance->mfi_pool_lock);
7237 spin_lock_init(&instance->hba_lock);
7238 spin_lock_init(&instance->stream_lock);
7239 spin_lock_init(&instance->completion_lock);
7240
7241 mutex_init(&instance->reset_mutex);
7242
7243 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7244 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7245 instance->flag_ieee = 1;
7246
7247 megasas_dbg_lvl = 0;
7248 instance->flag = 0;
7249 instance->unload = 1;
7250 instance->last_time = 0;
7251 instance->disableOnlineCtrlReset = 1;
7252 instance->UnevenSpanSupport = 0;
7253 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7254 instance->msix_load_balance = false;
7255
7256 if (instance->adapter_type != MFI_SERIES)
7257 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7258 else
7259 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7260 }
7261
7262 /**
7263 * megasas_probe_one - PCI hotplug entry point
7264 * @pdev: PCI device structure
7265 * @id: PCI ids of supported hotplugged adapter
7266 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7267 static int megasas_probe_one(struct pci_dev *pdev,
7268 const struct pci_device_id *id)
7269 {
7270 int rval, pos;
7271 struct Scsi_Host *host;
7272 struct megasas_instance *instance;
7273 u16 control = 0;
7274
7275 switch (pdev->device) {
7276 case PCI_DEVICE_ID_LSI_AERO_10E0:
7277 case PCI_DEVICE_ID_LSI_AERO_10E3:
7278 case PCI_DEVICE_ID_LSI_AERO_10E4:
7279 case PCI_DEVICE_ID_LSI_AERO_10E7:
7280 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7281 return 1;
7282 case PCI_DEVICE_ID_LSI_AERO_10E1:
7283 case PCI_DEVICE_ID_LSI_AERO_10E5:
7284 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7285 break;
7286 }
7287
7288 /* Reset MSI-X in the kdump kernel */
7289 if (reset_devices) {
7290 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7291 if (pos) {
7292 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7293 &control);
7294 if (control & PCI_MSIX_FLAGS_ENABLE) {
7295 dev_info(&pdev->dev, "resetting MSI-X\n");
7296 pci_write_config_word(pdev,
7297 pos + PCI_MSIX_FLAGS,
7298 control &
7299 ~PCI_MSIX_FLAGS_ENABLE);
7300 }
7301 }
7302 }
7303
7304 /*
7305 * PCI prepping: enable device set bus mastering and dma mask
7306 */
7307 rval = pci_enable_device_mem(pdev);
7308
7309 if (rval) {
7310 return rval;
7311 }
7312
7313 pci_set_master(pdev);
7314
7315 host = scsi_host_alloc(&megasas_template,
7316 sizeof(struct megasas_instance));
7317
7318 if (!host) {
7319 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7320 goto fail_alloc_instance;
7321 }
7322
7323 instance = (struct megasas_instance *)host->hostdata;
7324 memset(instance, 0, sizeof(*instance));
7325 atomic_set(&instance->fw_reset_no_pci_access, 0);
7326
7327 /*
7328 * Initialize PCI related and misc parameters
7329 */
7330 instance->pdev = pdev;
7331 instance->host = host;
7332 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7333 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7334
7335 megasas_set_adapter_type(instance);
7336
7337 /*
7338 * Initialize MFI Firmware
7339 */
7340 if (megasas_init_fw(instance))
7341 goto fail_init_mfi;
7342
7343 if (instance->requestorId) {
7344 if (instance->PlasmaFW111) {
7345 instance->vf_affiliation_111 =
7346 dma_alloc_coherent(&pdev->dev,
7347 sizeof(struct MR_LD_VF_AFFILIATION_111),
7348 &instance->vf_affiliation_111_h,
7349 GFP_KERNEL);
7350 if (!instance->vf_affiliation_111)
7351 dev_warn(&pdev->dev, "Can't allocate "
7352 "memory for VF affiliation buffer\n");
7353 } else {
7354 instance->vf_affiliation =
7355 dma_alloc_coherent(&pdev->dev,
7356 (MAX_LOGICAL_DRIVES + 1) *
7357 sizeof(struct MR_LD_VF_AFFILIATION),
7358 &instance->vf_affiliation_h,
7359 GFP_KERNEL);
7360 if (!instance->vf_affiliation)
7361 dev_warn(&pdev->dev, "Can't allocate "
7362 "memory for VF affiliation buffer\n");
7363 }
7364 }
7365
7366 /*
7367 * Store instance in PCI softstate
7368 */
7369 pci_set_drvdata(pdev, instance);
7370
7371 /*
7372 * Add this controller to megasas_mgmt_info structure so that it
7373 * can be exported to management applications
7374 */
7375 megasas_mgmt_info.count++;
7376 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7377 megasas_mgmt_info.max_index++;
7378
7379 /*
7380 * Register with SCSI mid-layer
7381 */
7382 if (megasas_io_attach(instance))
7383 goto fail_io_attach;
7384
7385 instance->unload = 0;
7386 /*
7387 * Trigger SCSI to scan our drives
7388 */
7389 if (!instance->enable_fw_dev_list ||
7390 (instance->host_device_list_buf->count > 0))
7391 scsi_scan_host(host);
7392
7393 /*
7394 * Initiate AEN (Asynchronous Event Notification)
7395 */
7396 if (megasas_start_aen(instance)) {
7397 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7398 goto fail_start_aen;
7399 }
7400
7401 megasas_setup_debugfs(instance);
7402
7403 /* Get current SR-IOV LD/VF affiliation */
7404 if (instance->requestorId)
7405 megasas_get_ld_vf_affiliation(instance, 1);
7406
7407 return 0;
7408
7409 fail_start_aen:
7410 fail_io_attach:
7411 megasas_mgmt_info.count--;
7412 megasas_mgmt_info.max_index--;
7413 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7414
7415 instance->instancet->disable_intr(instance);
7416 megasas_destroy_irqs(instance);
7417
7418 if (instance->adapter_type != MFI_SERIES)
7419 megasas_release_fusion(instance);
7420 else
7421 megasas_release_mfi(instance);
7422 if (instance->msix_vectors)
7423 pci_free_irq_vectors(instance->pdev);
7424 fail_init_mfi:
7425 scsi_host_put(host);
7426 fail_alloc_instance:
7427 pci_disable_device(pdev);
7428
7429 return -ENODEV;
7430 }
7431
7432 /**
7433 * megasas_flush_cache - Requests FW to flush all its caches
7434 * @instance: Adapter soft state
7435 */
megasas_flush_cache(struct megasas_instance * instance)7436 static void megasas_flush_cache(struct megasas_instance *instance)
7437 {
7438 struct megasas_cmd *cmd;
7439 struct megasas_dcmd_frame *dcmd;
7440
7441 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7442 return;
7443
7444 cmd = megasas_get_cmd(instance);
7445
7446 if (!cmd)
7447 return;
7448
7449 dcmd = &cmd->frame->dcmd;
7450
7451 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7452
7453 dcmd->cmd = MFI_CMD_DCMD;
7454 dcmd->cmd_status = 0x0;
7455 dcmd->sge_count = 0;
7456 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7457 dcmd->timeout = 0;
7458 dcmd->pad_0 = 0;
7459 dcmd->data_xfer_len = 0;
7460 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7461 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7462
7463 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7464 != DCMD_SUCCESS) {
7465 dev_err(&instance->pdev->dev,
7466 "return from %s %d\n", __func__, __LINE__);
7467 return;
7468 }
7469
7470 megasas_return_cmd(instance, cmd);
7471 }
7472
7473 /**
7474 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7475 * @instance: Adapter soft state
7476 * @opcode: Shutdown/Hibernate
7477 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7478 static void megasas_shutdown_controller(struct megasas_instance *instance,
7479 u32 opcode)
7480 {
7481 struct megasas_cmd *cmd;
7482 struct megasas_dcmd_frame *dcmd;
7483
7484 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7485 return;
7486
7487 cmd = megasas_get_cmd(instance);
7488
7489 if (!cmd)
7490 return;
7491
7492 if (instance->aen_cmd)
7493 megasas_issue_blocked_abort_cmd(instance,
7494 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7495 if (instance->map_update_cmd)
7496 megasas_issue_blocked_abort_cmd(instance,
7497 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7498 if (instance->jbod_seq_cmd)
7499 megasas_issue_blocked_abort_cmd(instance,
7500 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7501
7502 dcmd = &cmd->frame->dcmd;
7503
7504 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7505
7506 dcmd->cmd = MFI_CMD_DCMD;
7507 dcmd->cmd_status = 0x0;
7508 dcmd->sge_count = 0;
7509 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7510 dcmd->timeout = 0;
7511 dcmd->pad_0 = 0;
7512 dcmd->data_xfer_len = 0;
7513 dcmd->opcode = cpu_to_le32(opcode);
7514
7515 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7516 != DCMD_SUCCESS) {
7517 dev_err(&instance->pdev->dev,
7518 "return from %s %d\n", __func__, __LINE__);
7519 return;
7520 }
7521
7522 megasas_return_cmd(instance, cmd);
7523 }
7524
7525 #ifdef CONFIG_PM
7526 /**
7527 * megasas_suspend - driver suspend entry point
7528 * @pdev: PCI device structure
7529 * @state: PCI power state to suspend routine
7530 */
7531 static int
megasas_suspend(struct pci_dev * pdev,pm_message_t state)7532 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7533 {
7534 struct megasas_instance *instance;
7535
7536 instance = pci_get_drvdata(pdev);
7537
7538 if (!instance)
7539 return 0;
7540
7541 instance->unload = 1;
7542
7543 dev_info(&pdev->dev, "%s is called\n", __func__);
7544
7545 /* Shutdown SR-IOV heartbeat timer */
7546 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7547 del_timer_sync(&instance->sriov_heartbeat_timer);
7548
7549 /* Stop the FW fault detection watchdog */
7550 if (instance->adapter_type != MFI_SERIES)
7551 megasas_fusion_stop_watchdog(instance);
7552
7553 megasas_flush_cache(instance);
7554 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7555
7556 /* cancel the delayed work if this work still in queue */
7557 if (instance->ev != NULL) {
7558 struct megasas_aen_event *ev = instance->ev;
7559 cancel_delayed_work_sync(&ev->hotplug_work);
7560 instance->ev = NULL;
7561 }
7562
7563 tasklet_kill(&instance->isr_tasklet);
7564
7565 pci_set_drvdata(instance->pdev, instance);
7566 instance->instancet->disable_intr(instance);
7567
7568 megasas_destroy_irqs(instance);
7569
7570 if (instance->msix_vectors)
7571 pci_free_irq_vectors(instance->pdev);
7572
7573 pci_save_state(pdev);
7574 pci_disable_device(pdev);
7575
7576 pci_set_power_state(pdev, pci_choose_state(pdev, state));
7577
7578 return 0;
7579 }
7580
7581 /**
7582 * megasas_resume- driver resume entry point
7583 * @pdev: PCI device structure
7584 */
7585 static int
megasas_resume(struct pci_dev * pdev)7586 megasas_resume(struct pci_dev *pdev)
7587 {
7588 int rval;
7589 struct Scsi_Host *host;
7590 struct megasas_instance *instance;
7591 int irq_flags = PCI_IRQ_LEGACY;
7592
7593 instance = pci_get_drvdata(pdev);
7594
7595 if (!instance)
7596 return 0;
7597
7598 host = instance->host;
7599 pci_set_power_state(pdev, PCI_D0);
7600 pci_enable_wake(pdev, PCI_D0, 0);
7601 pci_restore_state(pdev);
7602
7603 dev_info(&pdev->dev, "%s is called\n", __func__);
7604 /*
7605 * PCI prepping: enable device set bus mastering and dma mask
7606 */
7607 rval = pci_enable_device_mem(pdev);
7608
7609 if (rval) {
7610 dev_err(&pdev->dev, "Enable device failed\n");
7611 return rval;
7612 }
7613
7614 pci_set_master(pdev);
7615
7616 /*
7617 * We expect the FW state to be READY
7618 */
7619 if (megasas_transition_to_ready(instance, 0))
7620 goto fail_ready_state;
7621
7622 if (megasas_set_dma_mask(instance))
7623 goto fail_set_dma_mask;
7624
7625 /*
7626 * Initialize MFI Firmware
7627 */
7628
7629 atomic_set(&instance->fw_outstanding, 0);
7630 atomic_set(&instance->ldio_outstanding, 0);
7631
7632 /* Now re-enable MSI-X */
7633 if (instance->msix_vectors) {
7634 irq_flags = PCI_IRQ_MSIX;
7635 if (instance->smp_affinity_enable)
7636 irq_flags |= PCI_IRQ_AFFINITY;
7637 }
7638 rval = pci_alloc_irq_vectors(instance->pdev, 1,
7639 instance->msix_vectors ?
7640 instance->msix_vectors : 1, irq_flags);
7641 if (rval < 0)
7642 goto fail_reenable_msix;
7643
7644 megasas_setup_reply_map(instance);
7645
7646 if (instance->adapter_type != MFI_SERIES) {
7647 megasas_reset_reply_desc(instance);
7648 if (megasas_ioc_init_fusion(instance)) {
7649 megasas_free_cmds(instance);
7650 megasas_free_cmds_fusion(instance);
7651 goto fail_init_mfi;
7652 }
7653 if (!megasas_get_map_info(instance))
7654 megasas_sync_map_info(instance);
7655 } else {
7656 *instance->producer = 0;
7657 *instance->consumer = 0;
7658 if (megasas_issue_init_mfi(instance))
7659 goto fail_init_mfi;
7660 }
7661
7662 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7663 goto fail_init_mfi;
7664
7665 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7666 (unsigned long)instance);
7667
7668 if (instance->msix_vectors ?
7669 megasas_setup_irqs_msix(instance, 0) :
7670 megasas_setup_irqs_ioapic(instance))
7671 goto fail_init_mfi;
7672
7673 if (instance->adapter_type != MFI_SERIES)
7674 megasas_setup_irq_poll(instance);
7675
7676 /* Re-launch SR-IOV heartbeat timer */
7677 if (instance->requestorId) {
7678 if (!megasas_sriov_start_heartbeat(instance, 0))
7679 megasas_start_timer(instance);
7680 else {
7681 instance->skip_heartbeat_timer_del = 1;
7682 goto fail_init_mfi;
7683 }
7684 }
7685
7686 instance->instancet->enable_intr(instance);
7687 megasas_setup_jbod_map(instance);
7688 instance->unload = 0;
7689
7690 /*
7691 * Initiate AEN (Asynchronous Event Notification)
7692 */
7693 if (megasas_start_aen(instance))
7694 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7695
7696 /* Re-launch FW fault watchdog */
7697 if (instance->adapter_type != MFI_SERIES)
7698 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7699 goto fail_start_watchdog;
7700
7701 return 0;
7702
7703 fail_start_watchdog:
7704 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7705 del_timer_sync(&instance->sriov_heartbeat_timer);
7706 fail_init_mfi:
7707 megasas_free_ctrl_dma_buffers(instance);
7708 megasas_free_ctrl_mem(instance);
7709 scsi_host_put(host);
7710
7711 fail_reenable_msix:
7712 fail_set_dma_mask:
7713 fail_ready_state:
7714
7715 pci_disable_device(pdev);
7716
7717 return -ENODEV;
7718 }
7719 #else
7720 #define megasas_suspend NULL
7721 #define megasas_resume NULL
7722 #endif
7723
7724 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7725 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7726 {
7727 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7728 int i;
7729 u8 adp_state;
7730
7731 for (i = 0; i < wait_time; i++) {
7732 adp_state = atomic_read(&instance->adprecovery);
7733 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7734 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7735 break;
7736
7737 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7738 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7739
7740 msleep(1000);
7741 }
7742
7743 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7744 dev_info(&instance->pdev->dev,
7745 "%s HBA failed to become operational, adp_state %d\n",
7746 __func__, adp_state);
7747 return 1;
7748 }
7749
7750 return 0;
7751 }
7752
7753 /**
7754 * megasas_detach_one - PCI hot"un"plug entry point
7755 * @pdev: PCI device structure
7756 */
megasas_detach_one(struct pci_dev * pdev)7757 static void megasas_detach_one(struct pci_dev *pdev)
7758 {
7759 int i;
7760 struct Scsi_Host *host;
7761 struct megasas_instance *instance;
7762 struct fusion_context *fusion;
7763 u32 pd_seq_map_sz;
7764
7765 instance = pci_get_drvdata(pdev);
7766
7767 if (!instance)
7768 return;
7769
7770 host = instance->host;
7771 fusion = instance->ctrl_context;
7772
7773 /* Shutdown SR-IOV heartbeat timer */
7774 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7775 del_timer_sync(&instance->sriov_heartbeat_timer);
7776
7777 /* Stop the FW fault detection watchdog */
7778 if (instance->adapter_type != MFI_SERIES)
7779 megasas_fusion_stop_watchdog(instance);
7780
7781 if (instance->fw_crash_state != UNAVAILABLE)
7782 megasas_free_host_crash_buffer(instance);
7783 scsi_remove_host(instance->host);
7784 instance->unload = 1;
7785
7786 if (megasas_wait_for_adapter_operational(instance))
7787 goto skip_firing_dcmds;
7788
7789 megasas_flush_cache(instance);
7790 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7791
7792 skip_firing_dcmds:
7793 /* cancel the delayed work if this work still in queue*/
7794 if (instance->ev != NULL) {
7795 struct megasas_aen_event *ev = instance->ev;
7796 cancel_delayed_work_sync(&ev->hotplug_work);
7797 instance->ev = NULL;
7798 }
7799
7800 /* cancel all wait events */
7801 wake_up_all(&instance->int_cmd_wait_q);
7802
7803 tasklet_kill(&instance->isr_tasklet);
7804
7805 /*
7806 * Take the instance off the instance array. Note that we will not
7807 * decrement the max_index. We let this array be sparse array
7808 */
7809 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7810 if (megasas_mgmt_info.instance[i] == instance) {
7811 megasas_mgmt_info.count--;
7812 megasas_mgmt_info.instance[i] = NULL;
7813
7814 break;
7815 }
7816 }
7817
7818 instance->instancet->disable_intr(instance);
7819
7820 megasas_destroy_irqs(instance);
7821
7822 if (instance->msix_vectors)
7823 pci_free_irq_vectors(instance->pdev);
7824
7825 if (instance->adapter_type >= VENTURA_SERIES) {
7826 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7827 kfree(fusion->stream_detect_by_ld[i]);
7828 kfree(fusion->stream_detect_by_ld);
7829 fusion->stream_detect_by_ld = NULL;
7830 }
7831
7832
7833 if (instance->adapter_type != MFI_SERIES) {
7834 megasas_release_fusion(instance);
7835 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7836 (sizeof(struct MR_PD_CFG_SEQ) *
7837 (MAX_PHYSICAL_DEVICES - 1));
7838 for (i = 0; i < 2 ; i++) {
7839 if (fusion->ld_map[i])
7840 dma_free_coherent(&instance->pdev->dev,
7841 fusion->max_map_sz,
7842 fusion->ld_map[i],
7843 fusion->ld_map_phys[i]);
7844 if (fusion->ld_drv_map[i]) {
7845 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7846 vfree(fusion->ld_drv_map[i]);
7847 else
7848 free_pages((ulong)fusion->ld_drv_map[i],
7849 fusion->drv_map_pages);
7850 }
7851
7852 if (fusion->pd_seq_sync[i])
7853 dma_free_coherent(&instance->pdev->dev,
7854 pd_seq_map_sz,
7855 fusion->pd_seq_sync[i],
7856 fusion->pd_seq_phys[i]);
7857 }
7858 } else {
7859 megasas_release_mfi(instance);
7860 }
7861
7862 if (instance->vf_affiliation)
7863 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7864 sizeof(struct MR_LD_VF_AFFILIATION),
7865 instance->vf_affiliation,
7866 instance->vf_affiliation_h);
7867
7868 if (instance->vf_affiliation_111)
7869 dma_free_coherent(&pdev->dev,
7870 sizeof(struct MR_LD_VF_AFFILIATION_111),
7871 instance->vf_affiliation_111,
7872 instance->vf_affiliation_111_h);
7873
7874 if (instance->hb_host_mem)
7875 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7876 instance->hb_host_mem,
7877 instance->hb_host_mem_h);
7878
7879 megasas_free_ctrl_dma_buffers(instance);
7880
7881 megasas_free_ctrl_mem(instance);
7882
7883 megasas_destroy_debugfs(instance);
7884
7885 scsi_host_put(host);
7886
7887 pci_disable_device(pdev);
7888 }
7889
7890 /**
7891 * megasas_shutdown - Shutdown entry point
7892 * @device: Generic device structure
7893 */
megasas_shutdown(struct pci_dev * pdev)7894 static void megasas_shutdown(struct pci_dev *pdev)
7895 {
7896 struct megasas_instance *instance = pci_get_drvdata(pdev);
7897
7898 if (!instance)
7899 return;
7900
7901 instance->unload = 1;
7902
7903 if (megasas_wait_for_adapter_operational(instance))
7904 goto skip_firing_dcmds;
7905
7906 megasas_flush_cache(instance);
7907 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7908
7909 skip_firing_dcmds:
7910 instance->instancet->disable_intr(instance);
7911 megasas_destroy_irqs(instance);
7912
7913 if (instance->msix_vectors)
7914 pci_free_irq_vectors(instance->pdev);
7915 }
7916
7917 /**
7918 * megasas_mgmt_open - char node "open" entry point
7919 */
megasas_mgmt_open(struct inode * inode,struct file * filep)7920 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7921 {
7922 /*
7923 * Allow only those users with admin rights
7924 */
7925 if (!capable(CAP_SYS_ADMIN))
7926 return -EACCES;
7927
7928 return 0;
7929 }
7930
7931 /**
7932 * megasas_mgmt_fasync - Async notifier registration from applications
7933 *
7934 * This function adds the calling process to a driver global queue. When an
7935 * event occurs, SIGIO will be sent to all processes in this queue.
7936 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)7937 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7938 {
7939 int rc;
7940
7941 mutex_lock(&megasas_async_queue_mutex);
7942
7943 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7944
7945 mutex_unlock(&megasas_async_queue_mutex);
7946
7947 if (rc >= 0) {
7948 /* For sanity check when we get ioctl */
7949 filep->private_data = filep;
7950 return 0;
7951 }
7952
7953 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7954
7955 return rc;
7956 }
7957
7958 /**
7959 * megasas_mgmt_poll - char node "poll" entry point
7960 * */
megasas_mgmt_poll(struct file * file,poll_table * wait)7961 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7962 {
7963 __poll_t mask;
7964 unsigned long flags;
7965
7966 poll_wait(file, &megasas_poll_wait, wait);
7967 spin_lock_irqsave(&poll_aen_lock, flags);
7968 if (megasas_poll_wait_aen)
7969 mask = (EPOLLIN | EPOLLRDNORM);
7970 else
7971 mask = 0;
7972 megasas_poll_wait_aen = 0;
7973 spin_unlock_irqrestore(&poll_aen_lock, flags);
7974 return mask;
7975 }
7976
7977 /*
7978 * megasas_set_crash_dump_params_ioctl:
7979 * Send CRASH_DUMP_MODE DCMD to all controllers
7980 * @cmd: MFI command frame
7981 */
7982
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)7983 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7984 {
7985 struct megasas_instance *local_instance;
7986 int i, error = 0;
7987 int crash_support;
7988
7989 crash_support = cmd->frame->dcmd.mbox.w[0];
7990
7991 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7992 local_instance = megasas_mgmt_info.instance[i];
7993 if (local_instance && local_instance->crash_dump_drv_support) {
7994 if ((atomic_read(&local_instance->adprecovery) ==
7995 MEGASAS_HBA_OPERATIONAL) &&
7996 !megasas_set_crash_dump_params(local_instance,
7997 crash_support)) {
7998 local_instance->crash_dump_app_support =
7999 crash_support;
8000 dev_info(&local_instance->pdev->dev,
8001 "Application firmware crash "
8002 "dump mode set success\n");
8003 error = 0;
8004 } else {
8005 dev_info(&local_instance->pdev->dev,
8006 "Application firmware crash "
8007 "dump mode set failed\n");
8008 error = -1;
8009 }
8010 }
8011 }
8012 return error;
8013 }
8014
8015 /**
8016 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8017 * @instance: Adapter soft state
8018 * @argp: User's ioctl packet
8019 */
8020 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8021 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8022 struct megasas_iocpacket __user * user_ioc,
8023 struct megasas_iocpacket *ioc)
8024 {
8025 struct megasas_sge64 *kern_sge64 = NULL;
8026 struct megasas_sge32 *kern_sge32 = NULL;
8027 struct megasas_cmd *cmd;
8028 void *kbuff_arr[MAX_IOCTL_SGE];
8029 dma_addr_t buf_handle = 0;
8030 int error = 0, i;
8031 void *sense = NULL;
8032 dma_addr_t sense_handle;
8033 unsigned long *sense_ptr;
8034 u32 opcode = 0;
8035
8036 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8037
8038 if (ioc->sge_count > MAX_IOCTL_SGE) {
8039 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8040 ioc->sge_count, MAX_IOCTL_SGE);
8041 return -EINVAL;
8042 }
8043
8044 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8045 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8046 !instance->support_nvme_passthru) ||
8047 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8048 !instance->support_pci_lane_margining)) {
8049 dev_err(&instance->pdev->dev,
8050 "Received invalid ioctl command 0x%x\n",
8051 ioc->frame.hdr.cmd);
8052 return -ENOTSUPP;
8053 }
8054
8055 cmd = megasas_get_cmd(instance);
8056 if (!cmd) {
8057 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8058 return -ENOMEM;
8059 }
8060
8061 /*
8062 * User's IOCTL packet has 2 frames (maximum). Copy those two
8063 * frames into our cmd's frames. cmd->frame's context will get
8064 * overwritten when we copy from user's frames. So set that value
8065 * alone separately
8066 */
8067 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8068 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8069 cmd->frame->hdr.pad_0 = 0;
8070
8071 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8072
8073 if (instance->consistent_mask_64bit)
8074 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8075 MFI_FRAME_SENSE64));
8076 else
8077 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8078 MFI_FRAME_SENSE64));
8079
8080 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8081 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8082
8083 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8084 mutex_lock(&instance->reset_mutex);
8085 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8086 megasas_return_cmd(instance, cmd);
8087 mutex_unlock(&instance->reset_mutex);
8088 return -1;
8089 }
8090 mutex_unlock(&instance->reset_mutex);
8091 }
8092
8093 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8094 error = megasas_set_crash_dump_params_ioctl(cmd);
8095 megasas_return_cmd(instance, cmd);
8096 return error;
8097 }
8098
8099 /*
8100 * The management interface between applications and the fw uses
8101 * MFI frames. E.g, RAID configuration changes, LD property changes
8102 * etc are accomplishes through different kinds of MFI frames. The
8103 * driver needs to care only about substituting user buffers with
8104 * kernel buffers in SGLs. The location of SGL is embedded in the
8105 * struct iocpacket itself.
8106 */
8107 if (instance->consistent_mask_64bit)
8108 kern_sge64 = (struct megasas_sge64 *)
8109 ((unsigned long)cmd->frame + ioc->sgl_off);
8110 else
8111 kern_sge32 = (struct megasas_sge32 *)
8112 ((unsigned long)cmd->frame + ioc->sgl_off);
8113
8114 /*
8115 * For each user buffer, create a mirror buffer and copy in
8116 */
8117 for (i = 0; i < ioc->sge_count; i++) {
8118 if (!ioc->sgl[i].iov_len)
8119 continue;
8120
8121 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8122 ioc->sgl[i].iov_len,
8123 &buf_handle, GFP_KERNEL);
8124 if (!kbuff_arr[i]) {
8125 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8126 "kernel SGL buffer for IOCTL\n");
8127 error = -ENOMEM;
8128 goto out;
8129 }
8130
8131 /*
8132 * We don't change the dma_coherent_mask, so
8133 * dma_alloc_coherent only returns 32bit addresses
8134 */
8135 if (instance->consistent_mask_64bit) {
8136 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8137 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8138 } else {
8139 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8140 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8141 }
8142
8143 /*
8144 * We created a kernel buffer corresponding to the
8145 * user buffer. Now copy in from the user buffer
8146 */
8147 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8148 (u32) (ioc->sgl[i].iov_len))) {
8149 error = -EFAULT;
8150 goto out;
8151 }
8152 }
8153
8154 if (ioc->sense_len) {
8155 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8156 &sense_handle, GFP_KERNEL);
8157 if (!sense) {
8158 error = -ENOMEM;
8159 goto out;
8160 }
8161
8162 sense_ptr =
8163 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
8164 if (instance->consistent_mask_64bit)
8165 *sense_ptr = cpu_to_le64(sense_handle);
8166 else
8167 *sense_ptr = cpu_to_le32(sense_handle);
8168 }
8169
8170 /*
8171 * Set the sync_cmd flag so that the ISR knows not to complete this
8172 * cmd to the SCSI mid-layer
8173 */
8174 cmd->sync_cmd = 1;
8175 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
8176 cmd->sync_cmd = 0;
8177 dev_err(&instance->pdev->dev,
8178 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8179 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8180 cmd->cmd_status_drv);
8181 return -EBUSY;
8182 }
8183
8184 cmd->sync_cmd = 0;
8185
8186 if (instance->unload == 1) {
8187 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8188 "don't submit data to application\n");
8189 goto out;
8190 }
8191 /*
8192 * copy out the kernel buffers to user buffers
8193 */
8194 for (i = 0; i < ioc->sge_count; i++) {
8195 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8196 ioc->sgl[i].iov_len)) {
8197 error = -EFAULT;
8198 goto out;
8199 }
8200 }
8201
8202 /*
8203 * copy out the sense
8204 */
8205 if (ioc->sense_len) {
8206 /*
8207 * sense_ptr points to the location that has the user
8208 * sense buffer address
8209 */
8210 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8211 ioc->sense_off);
8212
8213 if (copy_to_user((void __user *)((unsigned long)
8214 get_unaligned((unsigned long *)sense_ptr)),
8215 sense, ioc->sense_len)) {
8216 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8217 "sense data\n");
8218 error = -EFAULT;
8219 goto out;
8220 }
8221 }
8222
8223 /*
8224 * copy the status codes returned by the fw
8225 */
8226 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8227 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8228 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8229 error = -EFAULT;
8230 }
8231
8232 out:
8233 if (sense) {
8234 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8235 sense, sense_handle);
8236 }
8237
8238 for (i = 0; i < ioc->sge_count; i++) {
8239 if (kbuff_arr[i]) {
8240 if (instance->consistent_mask_64bit)
8241 dma_free_coherent(&instance->pdev->dev,
8242 le32_to_cpu(kern_sge64[i].length),
8243 kbuff_arr[i],
8244 le64_to_cpu(kern_sge64[i].phys_addr));
8245 else
8246 dma_free_coherent(&instance->pdev->dev,
8247 le32_to_cpu(kern_sge32[i].length),
8248 kbuff_arr[i],
8249 le32_to_cpu(kern_sge32[i].phys_addr));
8250 kbuff_arr[i] = NULL;
8251 }
8252 }
8253
8254 megasas_return_cmd(instance, cmd);
8255 return error;
8256 }
8257
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8258 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8259 {
8260 struct megasas_iocpacket __user *user_ioc =
8261 (struct megasas_iocpacket __user *)arg;
8262 struct megasas_iocpacket *ioc;
8263 struct megasas_instance *instance;
8264 int error;
8265
8266 ioc = memdup_user(user_ioc, sizeof(*ioc));
8267 if (IS_ERR(ioc))
8268 return PTR_ERR(ioc);
8269
8270 instance = megasas_lookup_instance(ioc->host_no);
8271 if (!instance) {
8272 error = -ENODEV;
8273 goto out_kfree_ioc;
8274 }
8275
8276 /* Block ioctls in VF mode */
8277 if (instance->requestorId && !allow_vf_ioctls) {
8278 error = -ENODEV;
8279 goto out_kfree_ioc;
8280 }
8281
8282 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8283 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8284 error = -ENODEV;
8285 goto out_kfree_ioc;
8286 }
8287
8288 if (instance->unload == 1) {
8289 error = -ENODEV;
8290 goto out_kfree_ioc;
8291 }
8292
8293 if (down_interruptible(&instance->ioctl_sem)) {
8294 error = -ERESTARTSYS;
8295 goto out_kfree_ioc;
8296 }
8297
8298 if (megasas_wait_for_adapter_operational(instance)) {
8299 error = -ENODEV;
8300 goto out_up;
8301 }
8302
8303 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8304 out_up:
8305 up(&instance->ioctl_sem);
8306
8307 out_kfree_ioc:
8308 kfree(ioc);
8309 return error;
8310 }
8311
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8312 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8313 {
8314 struct megasas_instance *instance;
8315 struct megasas_aen aen;
8316 int error;
8317
8318 if (file->private_data != file) {
8319 printk(KERN_DEBUG "megasas: fasync_helper was not "
8320 "called first\n");
8321 return -EINVAL;
8322 }
8323
8324 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8325 return -EFAULT;
8326
8327 instance = megasas_lookup_instance(aen.host_no);
8328
8329 if (!instance)
8330 return -ENODEV;
8331
8332 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8333 return -ENODEV;
8334 }
8335
8336 if (instance->unload == 1) {
8337 return -ENODEV;
8338 }
8339
8340 if (megasas_wait_for_adapter_operational(instance))
8341 return -ENODEV;
8342
8343 mutex_lock(&instance->reset_mutex);
8344 error = megasas_register_aen(instance, aen.seq_num,
8345 aen.class_locale_word);
8346 mutex_unlock(&instance->reset_mutex);
8347 return error;
8348 }
8349
8350 /**
8351 * megasas_mgmt_ioctl - char node ioctl entry point
8352 */
8353 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8354 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8355 {
8356 switch (cmd) {
8357 case MEGASAS_IOC_FIRMWARE:
8358 return megasas_mgmt_ioctl_fw(file, arg);
8359
8360 case MEGASAS_IOC_GET_AEN:
8361 return megasas_mgmt_ioctl_aen(file, arg);
8362 }
8363
8364 return -ENOTTY;
8365 }
8366
8367 #ifdef CONFIG_COMPAT
megasas_mgmt_compat_ioctl_fw(struct file * file,unsigned long arg)8368 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8369 {
8370 struct compat_megasas_iocpacket __user *cioc =
8371 (struct compat_megasas_iocpacket __user *)arg;
8372 struct megasas_iocpacket __user *ioc =
8373 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8374 int i;
8375 int error = 0;
8376 compat_uptr_t ptr;
8377 u32 local_sense_off;
8378 u32 local_sense_len;
8379 u32 user_sense_off;
8380
8381 if (clear_user(ioc, sizeof(*ioc)))
8382 return -EFAULT;
8383
8384 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8385 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8386 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8387 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8388 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8389 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8390 return -EFAULT;
8391
8392 /*
8393 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8394 * sense_len is not null, so prepare the 64bit value under
8395 * the same condition.
8396 */
8397 if (get_user(local_sense_off, &ioc->sense_off) ||
8398 get_user(local_sense_len, &ioc->sense_len) ||
8399 get_user(user_sense_off, &cioc->sense_off))
8400 return -EFAULT;
8401
8402 if (local_sense_off != user_sense_off)
8403 return -EINVAL;
8404
8405 if (local_sense_len) {
8406 void __user **sense_ioc_ptr =
8407 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8408 compat_uptr_t *sense_cioc_ptr =
8409 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8410 if (get_user(ptr, sense_cioc_ptr) ||
8411 put_user(compat_ptr(ptr), sense_ioc_ptr))
8412 return -EFAULT;
8413 }
8414
8415 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8416 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8417 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8418 copy_in_user(&ioc->sgl[i].iov_len,
8419 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8420 return -EFAULT;
8421 }
8422
8423 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8424
8425 if (copy_in_user(&cioc->frame.hdr.cmd_status,
8426 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8427 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8428 return -EFAULT;
8429 }
8430 return error;
8431 }
8432
8433 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8434 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8435 unsigned long arg)
8436 {
8437 switch (cmd) {
8438 case MEGASAS_IOC_FIRMWARE32:
8439 return megasas_mgmt_compat_ioctl_fw(file, arg);
8440 case MEGASAS_IOC_GET_AEN:
8441 return megasas_mgmt_ioctl_aen(file, arg);
8442 }
8443
8444 return -ENOTTY;
8445 }
8446 #endif
8447
8448 /*
8449 * File operations structure for management interface
8450 */
8451 static const struct file_operations megasas_mgmt_fops = {
8452 .owner = THIS_MODULE,
8453 .open = megasas_mgmt_open,
8454 .fasync = megasas_mgmt_fasync,
8455 .unlocked_ioctl = megasas_mgmt_ioctl,
8456 .poll = megasas_mgmt_poll,
8457 #ifdef CONFIG_COMPAT
8458 .compat_ioctl = megasas_mgmt_compat_ioctl,
8459 #endif
8460 .llseek = noop_llseek,
8461 };
8462
8463 /*
8464 * PCI hotplug support registration structure
8465 */
8466 static struct pci_driver megasas_pci_driver = {
8467
8468 .name = "megaraid_sas",
8469 .id_table = megasas_pci_table,
8470 .probe = megasas_probe_one,
8471 .remove = megasas_detach_one,
8472 .suspend = megasas_suspend,
8473 .resume = megasas_resume,
8474 .shutdown = megasas_shutdown,
8475 };
8476
8477 /*
8478 * Sysfs driver attributes
8479 */
version_show(struct device_driver * dd,char * buf)8480 static ssize_t version_show(struct device_driver *dd, char *buf)
8481 {
8482 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8483 MEGASAS_VERSION);
8484 }
8485 static DRIVER_ATTR_RO(version);
8486
release_date_show(struct device_driver * dd,char * buf)8487 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8488 {
8489 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8490 MEGASAS_RELDATE);
8491 }
8492 static DRIVER_ATTR_RO(release_date);
8493
support_poll_for_event_show(struct device_driver * dd,char * buf)8494 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8495 {
8496 return sprintf(buf, "%u\n", support_poll_for_event);
8497 }
8498 static DRIVER_ATTR_RO(support_poll_for_event);
8499
support_device_change_show(struct device_driver * dd,char * buf)8500 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8501 {
8502 return sprintf(buf, "%u\n", support_device_change);
8503 }
8504 static DRIVER_ATTR_RO(support_device_change);
8505
dbg_lvl_show(struct device_driver * dd,char * buf)8506 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8507 {
8508 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8509 }
8510
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8511 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8512 size_t count)
8513 {
8514 int retval = count;
8515
8516 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8517 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8518 retval = -EINVAL;
8519 }
8520 return retval;
8521 }
8522 static DRIVER_ATTR_RW(dbg_lvl);
8523
8524 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8525 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8526 {
8527 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8528 }
8529
8530 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8531
8532 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8533 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8534 {
8535 return sprintf(buf, "%u\n", support_pci_lane_margining);
8536 }
8537
8538 static DRIVER_ATTR_RO(support_pci_lane_margining);
8539
megasas_remove_scsi_device(struct scsi_device * sdev)8540 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8541 {
8542 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8543 scsi_remove_device(sdev);
8544 scsi_device_put(sdev);
8545 }
8546
8547 /**
8548 * megasas_update_device_list - Update the PD and LD device list from FW
8549 * after an AEN event notification
8550 * @instance: Adapter soft state
8551 * @event_type: Indicates type of event (PD or LD event)
8552 *
8553 * @return: Success or failure
8554 *
8555 * Issue DCMDs to Firmware to update the internal device list in driver.
8556 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8557 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8558 */
8559 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8560 int megasas_update_device_list(struct megasas_instance *instance,
8561 int event_type)
8562 {
8563 int dcmd_ret = DCMD_SUCCESS;
8564
8565 if (instance->enable_fw_dev_list) {
8566 dcmd_ret = megasas_host_device_list_query(instance, false);
8567 if (dcmd_ret != DCMD_SUCCESS)
8568 goto out;
8569 } else {
8570 if (event_type & SCAN_PD_CHANNEL) {
8571 dcmd_ret = megasas_get_pd_list(instance);
8572
8573 if (dcmd_ret != DCMD_SUCCESS)
8574 goto out;
8575 }
8576
8577 if (event_type & SCAN_VD_CHANNEL) {
8578 if (!instance->requestorId ||
8579 (instance->requestorId &&
8580 megasas_get_ld_vf_affiliation(instance, 0))) {
8581 dcmd_ret = megasas_ld_list_query(instance,
8582 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8583 if (dcmd_ret != DCMD_SUCCESS)
8584 goto out;
8585 }
8586 }
8587 }
8588
8589 out:
8590 return dcmd_ret;
8591 }
8592
8593 /**
8594 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8595 * after an AEN event notification
8596 * @instance: Adapter soft state
8597 * @scan_type: Indicates type of devices (PD/LD) to add
8598 * @return void
8599 */
8600 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8601 void megasas_add_remove_devices(struct megasas_instance *instance,
8602 int scan_type)
8603 {
8604 int i, j;
8605 u16 pd_index = 0;
8606 u16 ld_index = 0;
8607 u16 channel = 0, id = 0;
8608 struct Scsi_Host *host;
8609 struct scsi_device *sdev1;
8610 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8611 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8612
8613 host = instance->host;
8614
8615 if (instance->enable_fw_dev_list) {
8616 targetid_list = instance->host_device_list_buf;
8617 for (i = 0; i < targetid_list->count; i++) {
8618 targetid_entry = &targetid_list->host_device_list[i];
8619 if (targetid_entry->flags.u.bits.is_sys_pd) {
8620 channel = le16_to_cpu(targetid_entry->target_id) /
8621 MEGASAS_MAX_DEV_PER_CHANNEL;
8622 id = le16_to_cpu(targetid_entry->target_id) %
8623 MEGASAS_MAX_DEV_PER_CHANNEL;
8624 } else {
8625 channel = MEGASAS_MAX_PD_CHANNELS +
8626 (le16_to_cpu(targetid_entry->target_id) /
8627 MEGASAS_MAX_DEV_PER_CHANNEL);
8628 id = le16_to_cpu(targetid_entry->target_id) %
8629 MEGASAS_MAX_DEV_PER_CHANNEL;
8630 }
8631 sdev1 = scsi_device_lookup(host, channel, id, 0);
8632 if (!sdev1) {
8633 scsi_add_device(host, channel, id, 0);
8634 } else {
8635 scsi_device_put(sdev1);
8636 }
8637 }
8638 }
8639
8640 if (scan_type & SCAN_PD_CHANNEL) {
8641 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8642 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8643 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8644 sdev1 = scsi_device_lookup(host, i, j, 0);
8645 if (instance->pd_list[pd_index].driveState ==
8646 MR_PD_STATE_SYSTEM) {
8647 if (!sdev1)
8648 scsi_add_device(host, i, j, 0);
8649 else
8650 scsi_device_put(sdev1);
8651 } else {
8652 if (sdev1)
8653 megasas_remove_scsi_device(sdev1);
8654 }
8655 }
8656 }
8657 }
8658
8659 if (scan_type & SCAN_VD_CHANNEL) {
8660 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8661 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8662 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8663 sdev1 = scsi_device_lookup(host,
8664 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8665 if (instance->ld_ids[ld_index] != 0xff) {
8666 if (!sdev1)
8667 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8668 else
8669 scsi_device_put(sdev1);
8670 } else {
8671 if (sdev1)
8672 megasas_remove_scsi_device(sdev1);
8673 }
8674 }
8675 }
8676 }
8677
8678 }
8679
8680 static void
megasas_aen_polling(struct work_struct * work)8681 megasas_aen_polling(struct work_struct *work)
8682 {
8683 struct megasas_aen_event *ev =
8684 container_of(work, struct megasas_aen_event, hotplug_work.work);
8685 struct megasas_instance *instance = ev->instance;
8686 union megasas_evt_class_locale class_locale;
8687 int event_type = 0;
8688 u32 seq_num;
8689 int error;
8690 u8 dcmd_ret = DCMD_SUCCESS;
8691
8692 if (!instance) {
8693 printk(KERN_ERR "invalid instance!\n");
8694 kfree(ev);
8695 return;
8696 }
8697
8698 /* Don't run the event workqueue thread if OCR is running */
8699 mutex_lock(&instance->reset_mutex);
8700
8701 instance->ev = NULL;
8702 if (instance->evt_detail) {
8703 megasas_decode_evt(instance);
8704
8705 switch (le32_to_cpu(instance->evt_detail->code)) {
8706
8707 case MR_EVT_PD_INSERTED:
8708 case MR_EVT_PD_REMOVED:
8709 event_type = SCAN_PD_CHANNEL;
8710 break;
8711
8712 case MR_EVT_LD_OFFLINE:
8713 case MR_EVT_CFG_CLEARED:
8714 case MR_EVT_LD_DELETED:
8715 case MR_EVT_LD_CREATED:
8716 event_type = SCAN_VD_CHANNEL;
8717 break;
8718
8719 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8720 case MR_EVT_FOREIGN_CFG_IMPORTED:
8721 case MR_EVT_LD_STATE_CHANGE:
8722 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8723 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8724 instance->host->host_no);
8725 break;
8726
8727 case MR_EVT_CTRL_PROP_CHANGED:
8728 dcmd_ret = megasas_get_ctrl_info(instance);
8729 if (dcmd_ret == DCMD_SUCCESS &&
8730 instance->snapdump_wait_time) {
8731 megasas_get_snapdump_properties(instance);
8732 dev_info(&instance->pdev->dev,
8733 "Snap dump wait time\t: %d\n",
8734 instance->snapdump_wait_time);
8735 }
8736 break;
8737 default:
8738 event_type = 0;
8739 break;
8740 }
8741 } else {
8742 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8743 mutex_unlock(&instance->reset_mutex);
8744 kfree(ev);
8745 return;
8746 }
8747
8748 if (event_type)
8749 dcmd_ret = megasas_update_device_list(instance, event_type);
8750
8751 mutex_unlock(&instance->reset_mutex);
8752
8753 if (event_type && dcmd_ret == DCMD_SUCCESS)
8754 megasas_add_remove_devices(instance, event_type);
8755
8756 if (dcmd_ret == DCMD_SUCCESS)
8757 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8758 else
8759 seq_num = instance->last_seq_num;
8760
8761 /* Register AEN with FW for latest sequence number plus 1 */
8762 class_locale.members.reserved = 0;
8763 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8764 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8765
8766 if (instance->aen_cmd != NULL) {
8767 kfree(ev);
8768 return;
8769 }
8770
8771 mutex_lock(&instance->reset_mutex);
8772 error = megasas_register_aen(instance, seq_num,
8773 class_locale.word);
8774 if (error)
8775 dev_err(&instance->pdev->dev,
8776 "register aen failed error %x\n", error);
8777
8778 mutex_unlock(&instance->reset_mutex);
8779 kfree(ev);
8780 }
8781
8782 /**
8783 * megasas_init - Driver load entry point
8784 */
megasas_init(void)8785 static int __init megasas_init(void)
8786 {
8787 int rval;
8788
8789 /*
8790 * Booted in kdump kernel, minimize memory footprints by
8791 * disabling few features
8792 */
8793 if (reset_devices) {
8794 msix_vectors = 1;
8795 rdpq_enable = 0;
8796 dual_qdepth_disable = 1;
8797 }
8798
8799 /*
8800 * Announce driver version and other information
8801 */
8802 pr_info("megasas: %s\n", MEGASAS_VERSION);
8803
8804 spin_lock_init(&poll_aen_lock);
8805
8806 support_poll_for_event = 2;
8807 support_device_change = 1;
8808 support_nvme_encapsulation = true;
8809 support_pci_lane_margining = true;
8810
8811 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8812
8813 /*
8814 * Register character device node
8815 */
8816 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8817
8818 if (rval < 0) {
8819 printk(KERN_DEBUG "megasas: failed to open device node\n");
8820 return rval;
8821 }
8822
8823 megasas_mgmt_majorno = rval;
8824
8825 megasas_init_debugfs();
8826
8827 /*
8828 * Register ourselves as PCI hotplug module
8829 */
8830 rval = pci_register_driver(&megasas_pci_driver);
8831
8832 if (rval) {
8833 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8834 goto err_pcidrv;
8835 }
8836
8837 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
8838 (event_log_level > MFI_EVT_CLASS_DEAD)) {
8839 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");
8840 event_log_level = MFI_EVT_CLASS_CRITICAL;
8841 }
8842
8843 rval = driver_create_file(&megasas_pci_driver.driver,
8844 &driver_attr_version);
8845 if (rval)
8846 goto err_dcf_attr_ver;
8847
8848 rval = driver_create_file(&megasas_pci_driver.driver,
8849 &driver_attr_release_date);
8850 if (rval)
8851 goto err_dcf_rel_date;
8852
8853 rval = driver_create_file(&megasas_pci_driver.driver,
8854 &driver_attr_support_poll_for_event);
8855 if (rval)
8856 goto err_dcf_support_poll_for_event;
8857
8858 rval = driver_create_file(&megasas_pci_driver.driver,
8859 &driver_attr_dbg_lvl);
8860 if (rval)
8861 goto err_dcf_dbg_lvl;
8862 rval = driver_create_file(&megasas_pci_driver.driver,
8863 &driver_attr_support_device_change);
8864 if (rval)
8865 goto err_dcf_support_device_change;
8866
8867 rval = driver_create_file(&megasas_pci_driver.driver,
8868 &driver_attr_support_nvme_encapsulation);
8869 if (rval)
8870 goto err_dcf_support_nvme_encapsulation;
8871
8872 rval = driver_create_file(&megasas_pci_driver.driver,
8873 &driver_attr_support_pci_lane_margining);
8874 if (rval)
8875 goto err_dcf_support_pci_lane_margining;
8876
8877 return rval;
8878
8879 err_dcf_support_pci_lane_margining:
8880 driver_remove_file(&megasas_pci_driver.driver,
8881 &driver_attr_support_nvme_encapsulation);
8882
8883 err_dcf_support_nvme_encapsulation:
8884 driver_remove_file(&megasas_pci_driver.driver,
8885 &driver_attr_support_device_change);
8886
8887 err_dcf_support_device_change:
8888 driver_remove_file(&megasas_pci_driver.driver,
8889 &driver_attr_dbg_lvl);
8890 err_dcf_dbg_lvl:
8891 driver_remove_file(&megasas_pci_driver.driver,
8892 &driver_attr_support_poll_for_event);
8893 err_dcf_support_poll_for_event:
8894 driver_remove_file(&megasas_pci_driver.driver,
8895 &driver_attr_release_date);
8896 err_dcf_rel_date:
8897 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8898 err_dcf_attr_ver:
8899 pci_unregister_driver(&megasas_pci_driver);
8900 err_pcidrv:
8901 megasas_exit_debugfs();
8902 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8903 return rval;
8904 }
8905
8906 /**
8907 * megasas_exit - Driver unload entry point
8908 */
megasas_exit(void)8909 static void __exit megasas_exit(void)
8910 {
8911 driver_remove_file(&megasas_pci_driver.driver,
8912 &driver_attr_dbg_lvl);
8913 driver_remove_file(&megasas_pci_driver.driver,
8914 &driver_attr_support_poll_for_event);
8915 driver_remove_file(&megasas_pci_driver.driver,
8916 &driver_attr_support_device_change);
8917 driver_remove_file(&megasas_pci_driver.driver,
8918 &driver_attr_release_date);
8919 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8920 driver_remove_file(&megasas_pci_driver.driver,
8921 &driver_attr_support_nvme_encapsulation);
8922 driver_remove_file(&megasas_pci_driver.driver,
8923 &driver_attr_support_pci_lane_margining);
8924
8925 pci_unregister_driver(&megasas_pci_driver);
8926 megasas_exit_debugfs();
8927 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8928 }
8929
8930 module_init(megasas_init);
8931 module_exit(megasas_exit);
8932