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[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / megaraid / megaraid_sas_base.c
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2003-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * Authors: Avago Technologies
21 * Sreenivas Bagalkote
22 * Sumant Patro
23 * Bo Yang
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/slab.h>
45 #include <asm/uaccess.h>
46 #include <linux/fs.h>
47 #include <linux/compat.h>
48 #include <linux/blkdev.h>
49 #include <linux/mutex.h>
50 #include <linux/poll.h>
51
52 #include <scsi/scsi.h>
53 #include <scsi/scsi_cmnd.h>
54 #include <scsi/scsi_device.h>
55 #include <scsi/scsi_host.h>
56 #include <scsi/scsi_tcq.h>
57 #include "megaraid_sas_fusion.h"
58 #include "megaraid_sas.h"
59
60 /*
61 * Number of sectors per IO command
62 * Will be set in megasas_init_mfi if user does not provide
63 */
64 static unsigned int max_sectors;
65 module_param_named(max_sectors, max_sectors, int, 0);
66 MODULE_PARM_DESC(max_sectors,
67 "Maximum number of sectors per IO command");
68
69 static int msix_disable;
70 module_param(msix_disable, int, S_IRUGO);
71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
72
73 static unsigned int msix_vectors;
74 module_param(msix_vectors, int, S_IRUGO);
75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
76
77 static int allow_vf_ioctls;
78 module_param(allow_vf_ioctls, int, S_IRUGO);
79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
80
81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
82 module_param(throttlequeuedepth, int, S_IRUGO);
83 MODULE_PARM_DESC(throttlequeuedepth,
84 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
85
86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
87 module_param(resetwaittime, int, S_IRUGO);
88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
89 "before resetting adapter. Default: 180");
90
91 int smp_affinity_enable = 1;
92 module_param(smp_affinity_enable, int, S_IRUGO);
93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
94
95 int rdpq_enable = 1;
96 module_param(rdpq_enable, int, S_IRUGO);
97 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
98
99 unsigned int dual_qdepth_disable;
100 module_param(dual_qdepth_disable, int, S_IRUGO);
101 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
102
103 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
104 module_param(scmd_timeout, int, S_IRUGO);
105 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
106
107 MODULE_LICENSE("GPL");
108 MODULE_VERSION(MEGASAS_VERSION);
109 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
110 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
111
112 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
113 static int megasas_get_pd_list(struct megasas_instance *instance);
114 static int megasas_ld_list_query(struct megasas_instance *instance,
115 u8 query_type);
116 static int megasas_issue_init_mfi(struct megasas_instance *instance);
117 static int megasas_register_aen(struct megasas_instance *instance,
118 u32 seq_num, u32 class_locale_word);
119 static int
120 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id);
121 /*
122 * PCI ID table for all supported controllers
123 */
124 static struct pci_device_id megasas_pci_table[] = {
125
126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
127 /* xscale IOP */
128 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
129 /* ppc IOP */
130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
131 /* ppc IOP */
132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
133 /* gen2*/
134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
135 /* gen2*/
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
137 /* skinny*/
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
139 /* skinny*/
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
141 /* xscale IOP, vega */
142 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
143 /* xscale IOP */
144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
145 /* Fusion */
146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
147 /* Plasma */
148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
149 /* Invader */
150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
151 /* Fury */
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
153 /* Intruder */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
155 /* Intruder 24 port*/
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
158 {}
159 };
160
161 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
162
163 static int megasas_mgmt_majorno;
164 struct megasas_mgmt_info megasas_mgmt_info;
165 static struct fasync_struct *megasas_async_queue;
166 static DEFINE_MUTEX(megasas_async_queue_mutex);
167
168 static int megasas_poll_wait_aen;
169 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
170 static u32 support_poll_for_event;
171 u32 megasas_dbg_lvl;
172 static u32 support_device_change;
173
174 /* define lock for aen poll */
175 spinlock_t poll_aen_lock;
176
177 void
178 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
179 u8 alt_status);
180 static u32
181 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
182 static int
183 megasas_adp_reset_gen2(struct megasas_instance *instance,
184 struct megasas_register_set __iomem *reg_set);
185 static irqreturn_t megasas_isr(int irq, void *devp);
186 static u32
187 megasas_init_adapter_mfi(struct megasas_instance *instance);
188 u32
189 megasas_build_and_issue_cmd(struct megasas_instance *instance,
190 struct scsi_cmnd *scmd);
191 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
192 void
193 megasas_release_fusion(struct megasas_instance *instance);
194 int
195 megasas_ioc_init_fusion(struct megasas_instance *instance);
196 void
197 megasas_free_cmds_fusion(struct megasas_instance *instance);
198 u8
199 megasas_get_map_info(struct megasas_instance *instance);
200 int
201 megasas_sync_map_info(struct megasas_instance *instance);
202 int
203 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
204 int seconds);
205 void megasas_reset_reply_desc(struct megasas_instance *instance);
206 void megasas_fusion_ocr_wq(struct work_struct *work);
207 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
208 int initial);
209 int megasas_check_mpio_paths(struct megasas_instance *instance,
210 struct scsi_cmnd *scmd);
211
212 int
213 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
214 {
215 instance->instancet->fire_cmd(instance,
216 cmd->frame_phys_addr, 0, instance->reg_set);
217 return 0;
218 }
219
220 /**
221 * megasas_get_cmd - Get a command from the free pool
222 * @instance: Adapter soft state
223 *
224 * Returns a free command from the pool
225 */
226 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
227 *instance)
228 {
229 unsigned long flags;
230 struct megasas_cmd *cmd = NULL;
231
232 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
233
234 if (!list_empty(&instance->cmd_pool)) {
235 cmd = list_entry((&instance->cmd_pool)->next,
236 struct megasas_cmd, list);
237 list_del_init(&cmd->list);
238 } else {
239 dev_err(&instance->pdev->dev, "Command pool empty!\n");
240 }
241
242 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
243 return cmd;
244 }
245
246 /**
247 * megasas_return_cmd - Return a cmd to free command pool
248 * @instance: Adapter soft state
249 * @cmd: Command packet to be returned to free command pool
250 */
251 inline void
252 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
253 {
254 unsigned long flags;
255 u32 blk_tags;
256 struct megasas_cmd_fusion *cmd_fusion;
257 struct fusion_context *fusion = instance->ctrl_context;
258
259 /* This flag is used only for fusion adapter.
260 * Wait for Interrupt for Polled mode DCMD
261 */
262 if (cmd->flags & DRV_DCMD_POLLED_MODE)
263 return;
264
265 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
266
267 if (fusion) {
268 blk_tags = instance->max_scsi_cmds + cmd->index;
269 cmd_fusion = fusion->cmd_list[blk_tags];
270 megasas_return_cmd_fusion(instance, cmd_fusion);
271 }
272 cmd->scmd = NULL;
273 cmd->frame_count = 0;
274 cmd->flags = 0;
275 if (!fusion && reset_devices)
276 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
277 list_add(&cmd->list, (&instance->cmd_pool)->next);
278
279 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
280
281 }
282
283 static const char *
284 format_timestamp(uint32_t timestamp)
285 {
286 static char buffer[32];
287
288 if ((timestamp & 0xff000000) == 0xff000000)
289 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
290 0x00ffffff);
291 else
292 snprintf(buffer, sizeof(buffer), "%us", timestamp);
293 return buffer;
294 }
295
296 static const char *
297 format_class(int8_t class)
298 {
299 static char buffer[6];
300
301 switch (class) {
302 case MFI_EVT_CLASS_DEBUG:
303 return "debug";
304 case MFI_EVT_CLASS_PROGRESS:
305 return "progress";
306 case MFI_EVT_CLASS_INFO:
307 return "info";
308 case MFI_EVT_CLASS_WARNING:
309 return "WARN";
310 case MFI_EVT_CLASS_CRITICAL:
311 return "CRIT";
312 case MFI_EVT_CLASS_FATAL:
313 return "FATAL";
314 case MFI_EVT_CLASS_DEAD:
315 return "DEAD";
316 default:
317 snprintf(buffer, sizeof(buffer), "%d", class);
318 return buffer;
319 }
320 }
321
322 /**
323 * megasas_decode_evt: Decode FW AEN event and print critical event
324 * for information.
325 * @instance: Adapter soft state
326 */
327 static void
328 megasas_decode_evt(struct megasas_instance *instance)
329 {
330 struct megasas_evt_detail *evt_detail = instance->evt_detail;
331 union megasas_evt_class_locale class_locale;
332 class_locale.word = le32_to_cpu(evt_detail->cl.word);
333
334 if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
335 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
336 le32_to_cpu(evt_detail->seq_num),
337 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
338 (class_locale.members.locale),
339 format_class(class_locale.members.class),
340 evt_detail->description);
341 }
342
343 /**
344 * The following functions are defined for xscale
345 * (deviceid : 1064R, PERC5) controllers
346 */
347
348 /**
349 * megasas_enable_intr_xscale - Enables interrupts
350 * @regs: MFI register set
351 */
352 static inline void
353 megasas_enable_intr_xscale(struct megasas_instance *instance)
354 {
355 struct megasas_register_set __iomem *regs;
356
357 regs = instance->reg_set;
358 writel(0, &(regs)->outbound_intr_mask);
359
360 /* Dummy readl to force pci flush */
361 readl(&regs->outbound_intr_mask);
362 }
363
364 /**
365 * megasas_disable_intr_xscale -Disables interrupt
366 * @regs: MFI register set
367 */
368 static inline void
369 megasas_disable_intr_xscale(struct megasas_instance *instance)
370 {
371 struct megasas_register_set __iomem *regs;
372 u32 mask = 0x1f;
373
374 regs = instance->reg_set;
375 writel(mask, &regs->outbound_intr_mask);
376 /* Dummy readl to force pci flush */
377 readl(&regs->outbound_intr_mask);
378 }
379
380 /**
381 * megasas_read_fw_status_reg_xscale - returns the current FW status value
382 * @regs: MFI register set
383 */
384 static u32
385 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
386 {
387 return readl(&(regs)->outbound_msg_0);
388 }
389 /**
390 * megasas_clear_interrupt_xscale - Check & clear interrupt
391 * @regs: MFI register set
392 */
393 static int
394 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
395 {
396 u32 status;
397 u32 mfiStatus = 0;
398
399 /*
400 * Check if it is our interrupt
401 */
402 status = readl(&regs->outbound_intr_status);
403
404 if (status & MFI_OB_INTR_STATUS_MASK)
405 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
406 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
407 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
408
409 /*
410 * Clear the interrupt by writing back the same value
411 */
412 if (mfiStatus)
413 writel(status, &regs->outbound_intr_status);
414
415 /* Dummy readl to force pci flush */
416 readl(&regs->outbound_intr_status);
417
418 return mfiStatus;
419 }
420
421 /**
422 * megasas_fire_cmd_xscale - Sends command to the FW
423 * @frame_phys_addr : Physical address of cmd
424 * @frame_count : Number of frames for the command
425 * @regs : MFI register set
426 */
427 static inline void
428 megasas_fire_cmd_xscale(struct megasas_instance *instance,
429 dma_addr_t frame_phys_addr,
430 u32 frame_count,
431 struct megasas_register_set __iomem *regs)
432 {
433 unsigned long flags;
434
435 spin_lock_irqsave(&instance->hba_lock, flags);
436 writel((frame_phys_addr >> 3)|(frame_count),
437 &(regs)->inbound_queue_port);
438 spin_unlock_irqrestore(&instance->hba_lock, flags);
439 }
440
441 /**
442 * megasas_adp_reset_xscale - For controller reset
443 * @regs: MFI register set
444 */
445 static int
446 megasas_adp_reset_xscale(struct megasas_instance *instance,
447 struct megasas_register_set __iomem *regs)
448 {
449 u32 i;
450 u32 pcidata;
451
452 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
453
454 for (i = 0; i < 3; i++)
455 msleep(1000); /* sleep for 3 secs */
456 pcidata = 0;
457 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
458 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
459 if (pcidata & 0x2) {
460 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
461 pcidata &= ~0x2;
462 pci_write_config_dword(instance->pdev,
463 MFI_1068_PCSR_OFFSET, pcidata);
464
465 for (i = 0; i < 2; i++)
466 msleep(1000); /* need to wait 2 secs again */
467
468 pcidata = 0;
469 pci_read_config_dword(instance->pdev,
470 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
471 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
472 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
473 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
474 pcidata = 0;
475 pci_write_config_dword(instance->pdev,
476 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
477 }
478 }
479 return 0;
480 }
481
482 /**
483 * megasas_check_reset_xscale - For controller reset check
484 * @regs: MFI register set
485 */
486 static int
487 megasas_check_reset_xscale(struct megasas_instance *instance,
488 struct megasas_register_set __iomem *regs)
489 {
490 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
491 (le32_to_cpu(*instance->consumer) ==
492 MEGASAS_ADPRESET_INPROG_SIGN))
493 return 1;
494 return 0;
495 }
496
497 static struct megasas_instance_template megasas_instance_template_xscale = {
498
499 .fire_cmd = megasas_fire_cmd_xscale,
500 .enable_intr = megasas_enable_intr_xscale,
501 .disable_intr = megasas_disable_intr_xscale,
502 .clear_intr = megasas_clear_intr_xscale,
503 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
504 .adp_reset = megasas_adp_reset_xscale,
505 .check_reset = megasas_check_reset_xscale,
506 .service_isr = megasas_isr,
507 .tasklet = megasas_complete_cmd_dpc,
508 .init_adapter = megasas_init_adapter_mfi,
509 .build_and_issue_cmd = megasas_build_and_issue_cmd,
510 .issue_dcmd = megasas_issue_dcmd,
511 };
512
513 /**
514 * This is the end of set of functions & definitions specific
515 * to xscale (deviceid : 1064R, PERC5) controllers
516 */
517
518 /**
519 * The following functions are defined for ppc (deviceid : 0x60)
520 * controllers
521 */
522
523 /**
524 * megasas_enable_intr_ppc - Enables interrupts
525 * @regs: MFI register set
526 */
527 static inline void
528 megasas_enable_intr_ppc(struct megasas_instance *instance)
529 {
530 struct megasas_register_set __iomem *regs;
531
532 regs = instance->reg_set;
533 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
534
535 writel(~0x80000000, &(regs)->outbound_intr_mask);
536
537 /* Dummy readl to force pci flush */
538 readl(&regs->outbound_intr_mask);
539 }
540
541 /**
542 * megasas_disable_intr_ppc - Disable interrupt
543 * @regs: MFI register set
544 */
545 static inline void
546 megasas_disable_intr_ppc(struct megasas_instance *instance)
547 {
548 struct megasas_register_set __iomem *regs;
549 u32 mask = 0xFFFFFFFF;
550
551 regs = instance->reg_set;
552 writel(mask, &regs->outbound_intr_mask);
553 /* Dummy readl to force pci flush */
554 readl(&regs->outbound_intr_mask);
555 }
556
557 /**
558 * megasas_read_fw_status_reg_ppc - returns the current FW status value
559 * @regs: MFI register set
560 */
561 static u32
562 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
563 {
564 return readl(&(regs)->outbound_scratch_pad);
565 }
566
567 /**
568 * megasas_clear_interrupt_ppc - Check & clear interrupt
569 * @regs: MFI register set
570 */
571 static int
572 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
573 {
574 u32 status, mfiStatus = 0;
575
576 /*
577 * Check if it is our interrupt
578 */
579 status = readl(&regs->outbound_intr_status);
580
581 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
582 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
583
584 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
585 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
586
587 /*
588 * Clear the interrupt by writing back the same value
589 */
590 writel(status, &regs->outbound_doorbell_clear);
591
592 /* Dummy readl to force pci flush */
593 readl(&regs->outbound_doorbell_clear);
594
595 return mfiStatus;
596 }
597
598 /**
599 * megasas_fire_cmd_ppc - Sends command to the FW
600 * @frame_phys_addr : Physical address of cmd
601 * @frame_count : Number of frames for the command
602 * @regs : MFI register set
603 */
604 static inline void
605 megasas_fire_cmd_ppc(struct megasas_instance *instance,
606 dma_addr_t frame_phys_addr,
607 u32 frame_count,
608 struct megasas_register_set __iomem *regs)
609 {
610 unsigned long flags;
611
612 spin_lock_irqsave(&instance->hba_lock, flags);
613 writel((frame_phys_addr | (frame_count<<1))|1,
614 &(regs)->inbound_queue_port);
615 spin_unlock_irqrestore(&instance->hba_lock, flags);
616 }
617
618 /**
619 * megasas_check_reset_ppc - For controller reset check
620 * @regs: MFI register set
621 */
622 static int
623 megasas_check_reset_ppc(struct megasas_instance *instance,
624 struct megasas_register_set __iomem *regs)
625 {
626 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
627 return 1;
628
629 return 0;
630 }
631
632 static struct megasas_instance_template megasas_instance_template_ppc = {
633
634 .fire_cmd = megasas_fire_cmd_ppc,
635 .enable_intr = megasas_enable_intr_ppc,
636 .disable_intr = megasas_disable_intr_ppc,
637 .clear_intr = megasas_clear_intr_ppc,
638 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
639 .adp_reset = megasas_adp_reset_xscale,
640 .check_reset = megasas_check_reset_ppc,
641 .service_isr = megasas_isr,
642 .tasklet = megasas_complete_cmd_dpc,
643 .init_adapter = megasas_init_adapter_mfi,
644 .build_and_issue_cmd = megasas_build_and_issue_cmd,
645 .issue_dcmd = megasas_issue_dcmd,
646 };
647
648 /**
649 * megasas_enable_intr_skinny - Enables interrupts
650 * @regs: MFI register set
651 */
652 static inline void
653 megasas_enable_intr_skinny(struct megasas_instance *instance)
654 {
655 struct megasas_register_set __iomem *regs;
656
657 regs = instance->reg_set;
658 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
659
660 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
661
662 /* Dummy readl to force pci flush */
663 readl(&regs->outbound_intr_mask);
664 }
665
666 /**
667 * megasas_disable_intr_skinny - Disables interrupt
668 * @regs: MFI register set
669 */
670 static inline void
671 megasas_disable_intr_skinny(struct megasas_instance *instance)
672 {
673 struct megasas_register_set __iomem *regs;
674 u32 mask = 0xFFFFFFFF;
675
676 regs = instance->reg_set;
677 writel(mask, &regs->outbound_intr_mask);
678 /* Dummy readl to force pci flush */
679 readl(&regs->outbound_intr_mask);
680 }
681
682 /**
683 * megasas_read_fw_status_reg_skinny - returns the current FW status value
684 * @regs: MFI register set
685 */
686 static u32
687 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
688 {
689 return readl(&(regs)->outbound_scratch_pad);
690 }
691
692 /**
693 * megasas_clear_interrupt_skinny - Check & clear interrupt
694 * @regs: MFI register set
695 */
696 static int
697 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
698 {
699 u32 status;
700 u32 mfiStatus = 0;
701
702 /*
703 * Check if it is our interrupt
704 */
705 status = readl(&regs->outbound_intr_status);
706
707 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
708 return 0;
709 }
710
711 /*
712 * Check if it is our interrupt
713 */
714 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
715 MFI_STATE_FAULT) {
716 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
717 } else
718 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
719
720 /*
721 * Clear the interrupt by writing back the same value
722 */
723 writel(status, &regs->outbound_intr_status);
724
725 /*
726 * dummy read to flush PCI
727 */
728 readl(&regs->outbound_intr_status);
729
730 return mfiStatus;
731 }
732
733 /**
734 * megasas_fire_cmd_skinny - Sends command to the FW
735 * @frame_phys_addr : Physical address of cmd
736 * @frame_count : Number of frames for the command
737 * @regs : MFI register set
738 */
739 static inline void
740 megasas_fire_cmd_skinny(struct megasas_instance *instance,
741 dma_addr_t frame_phys_addr,
742 u32 frame_count,
743 struct megasas_register_set __iomem *regs)
744 {
745 unsigned long flags;
746
747 spin_lock_irqsave(&instance->hba_lock, flags);
748 writel(upper_32_bits(frame_phys_addr),
749 &(regs)->inbound_high_queue_port);
750 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
751 &(regs)->inbound_low_queue_port);
752 mmiowb();
753 spin_unlock_irqrestore(&instance->hba_lock, flags);
754 }
755
756 /**
757 * megasas_check_reset_skinny - For controller reset check
758 * @regs: MFI register set
759 */
760 static int
761 megasas_check_reset_skinny(struct megasas_instance *instance,
762 struct megasas_register_set __iomem *regs)
763 {
764 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
765 return 1;
766
767 return 0;
768 }
769
770 static struct megasas_instance_template megasas_instance_template_skinny = {
771
772 .fire_cmd = megasas_fire_cmd_skinny,
773 .enable_intr = megasas_enable_intr_skinny,
774 .disable_intr = megasas_disable_intr_skinny,
775 .clear_intr = megasas_clear_intr_skinny,
776 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
777 .adp_reset = megasas_adp_reset_gen2,
778 .check_reset = megasas_check_reset_skinny,
779 .service_isr = megasas_isr,
780 .tasklet = megasas_complete_cmd_dpc,
781 .init_adapter = megasas_init_adapter_mfi,
782 .build_and_issue_cmd = megasas_build_and_issue_cmd,
783 .issue_dcmd = megasas_issue_dcmd,
784 };
785
786
787 /**
788 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
789 * controllers
790 */
791
792 /**
793 * megasas_enable_intr_gen2 - Enables interrupts
794 * @regs: MFI register set
795 */
796 static inline void
797 megasas_enable_intr_gen2(struct megasas_instance *instance)
798 {
799 struct megasas_register_set __iomem *regs;
800
801 regs = instance->reg_set;
802 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
803
804 /* write ~0x00000005 (4 & 1) to the intr mask*/
805 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
806
807 /* Dummy readl to force pci flush */
808 readl(&regs->outbound_intr_mask);
809 }
810
811 /**
812 * megasas_disable_intr_gen2 - Disables interrupt
813 * @regs: MFI register set
814 */
815 static inline void
816 megasas_disable_intr_gen2(struct megasas_instance *instance)
817 {
818 struct megasas_register_set __iomem *regs;
819 u32 mask = 0xFFFFFFFF;
820
821 regs = instance->reg_set;
822 writel(mask, &regs->outbound_intr_mask);
823 /* Dummy readl to force pci flush */
824 readl(&regs->outbound_intr_mask);
825 }
826
827 /**
828 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
829 * @regs: MFI register set
830 */
831 static u32
832 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
833 {
834 return readl(&(regs)->outbound_scratch_pad);
835 }
836
837 /**
838 * megasas_clear_interrupt_gen2 - Check & clear interrupt
839 * @regs: MFI register set
840 */
841 static int
842 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
843 {
844 u32 status;
845 u32 mfiStatus = 0;
846
847 /*
848 * Check if it is our interrupt
849 */
850 status = readl(&regs->outbound_intr_status);
851
852 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
853 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
854 }
855 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
856 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
857 }
858
859 /*
860 * Clear the interrupt by writing back the same value
861 */
862 if (mfiStatus)
863 writel(status, &regs->outbound_doorbell_clear);
864
865 /* Dummy readl to force pci flush */
866 readl(&regs->outbound_intr_status);
867
868 return mfiStatus;
869 }
870 /**
871 * megasas_fire_cmd_gen2 - Sends command to the FW
872 * @frame_phys_addr : Physical address of cmd
873 * @frame_count : Number of frames for the command
874 * @regs : MFI register set
875 */
876 static inline void
877 megasas_fire_cmd_gen2(struct megasas_instance *instance,
878 dma_addr_t frame_phys_addr,
879 u32 frame_count,
880 struct megasas_register_set __iomem *regs)
881 {
882 unsigned long flags;
883
884 spin_lock_irqsave(&instance->hba_lock, flags);
885 writel((frame_phys_addr | (frame_count<<1))|1,
886 &(regs)->inbound_queue_port);
887 spin_unlock_irqrestore(&instance->hba_lock, flags);
888 }
889
890 /**
891 * megasas_adp_reset_gen2 - For controller reset
892 * @regs: MFI register set
893 */
894 static int
895 megasas_adp_reset_gen2(struct megasas_instance *instance,
896 struct megasas_register_set __iomem *reg_set)
897 {
898 u32 retry = 0 ;
899 u32 HostDiag;
900 u32 __iomem *seq_offset = &reg_set->seq_offset;
901 u32 __iomem *hostdiag_offset = &reg_set->host_diag;
902
903 if (instance->instancet == &megasas_instance_template_skinny) {
904 seq_offset = &reg_set->fusion_seq_offset;
905 hostdiag_offset = &reg_set->fusion_host_diag;
906 }
907
908 writel(0, seq_offset);
909 writel(4, seq_offset);
910 writel(0xb, seq_offset);
911 writel(2, seq_offset);
912 writel(7, seq_offset);
913 writel(0xd, seq_offset);
914
915 msleep(1000);
916
917 HostDiag = (u32)readl(hostdiag_offset);
918
919 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
920 msleep(100);
921 HostDiag = (u32)readl(hostdiag_offset);
922 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
923 retry, HostDiag);
924
925 if (retry++ >= 100)
926 return 1;
927
928 }
929
930 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
931
932 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
933
934 ssleep(10);
935
936 HostDiag = (u32)readl(hostdiag_offset);
937 while (HostDiag & DIAG_RESET_ADAPTER) {
938 msleep(100);
939 HostDiag = (u32)readl(hostdiag_offset);
940 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
941 retry, HostDiag);
942
943 if (retry++ >= 1000)
944 return 1;
945
946 }
947 return 0;
948 }
949
950 /**
951 * megasas_check_reset_gen2 - For controller reset check
952 * @regs: MFI register set
953 */
954 static int
955 megasas_check_reset_gen2(struct megasas_instance *instance,
956 struct megasas_register_set __iomem *regs)
957 {
958 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
959 return 1;
960
961 return 0;
962 }
963
964 static struct megasas_instance_template megasas_instance_template_gen2 = {
965
966 .fire_cmd = megasas_fire_cmd_gen2,
967 .enable_intr = megasas_enable_intr_gen2,
968 .disable_intr = megasas_disable_intr_gen2,
969 .clear_intr = megasas_clear_intr_gen2,
970 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
971 .adp_reset = megasas_adp_reset_gen2,
972 .check_reset = megasas_check_reset_gen2,
973 .service_isr = megasas_isr,
974 .tasklet = megasas_complete_cmd_dpc,
975 .init_adapter = megasas_init_adapter_mfi,
976 .build_and_issue_cmd = megasas_build_and_issue_cmd,
977 .issue_dcmd = megasas_issue_dcmd,
978 };
979
980 /**
981 * This is the end of set of functions & definitions
982 * specific to gen2 (deviceid : 0x78, 0x79) controllers
983 */
984
985 /*
986 * Template added for TB (Fusion)
987 */
988 extern struct megasas_instance_template megasas_instance_template_fusion;
989
990 /**
991 * megasas_issue_polled - Issues a polling command
992 * @instance: Adapter soft state
993 * @cmd: Command packet to be issued
994 *
995 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
996 */
997 int
998 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
999 {
1000 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1001
1002 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1003 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1004
1005 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1006 (instance->instancet->issue_dcmd(instance, cmd))) {
1007 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1008 __func__, __LINE__);
1009 return DCMD_NOT_FIRED;
1010 }
1011
1012 return wait_and_poll(instance, cmd, instance->requestorId ?
1013 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1014 }
1015
1016 /**
1017 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1018 * @instance: Adapter soft state
1019 * @cmd: Command to be issued
1020 * @timeout: Timeout in seconds
1021 *
1022 * This function waits on an event for the command to be returned from ISR.
1023 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1024 * Used to issue ioctl commands.
1025 */
1026 int
1027 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1028 struct megasas_cmd *cmd, int timeout)
1029 {
1030 int ret = 0;
1031 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1032
1033 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1034 (instance->instancet->issue_dcmd(instance, cmd))) {
1035 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1036 __func__, __LINE__);
1037 return DCMD_NOT_FIRED;
1038 }
1039
1040 if (timeout) {
1041 ret = wait_event_timeout(instance->int_cmd_wait_q,
1042 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1043 if (!ret) {
1044 dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1045 __func__, __LINE__);
1046 return DCMD_TIMEOUT;
1047 }
1048 } else
1049 wait_event(instance->int_cmd_wait_q,
1050 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1051
1052 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1053 DCMD_SUCCESS : DCMD_FAILED;
1054 }
1055
1056 /**
1057 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1058 * @instance: Adapter soft state
1059 * @cmd_to_abort: Previously issued cmd to be aborted
1060 * @timeout: Timeout in seconds
1061 *
1062 * MFI firmware can abort previously issued AEN comamnd (automatic event
1063 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1064 * cmd and waits for return status.
1065 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1066 */
1067 static int
1068 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1069 struct megasas_cmd *cmd_to_abort, int timeout)
1070 {
1071 struct megasas_cmd *cmd;
1072 struct megasas_abort_frame *abort_fr;
1073 int ret = 0;
1074
1075 cmd = megasas_get_cmd(instance);
1076
1077 if (!cmd)
1078 return -1;
1079
1080 abort_fr = &cmd->frame->abort;
1081
1082 /*
1083 * Prepare and issue the abort frame
1084 */
1085 abort_fr->cmd = MFI_CMD_ABORT;
1086 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1087 abort_fr->flags = cpu_to_le16(0);
1088 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1089 abort_fr->abort_mfi_phys_addr_lo =
1090 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1091 abort_fr->abort_mfi_phys_addr_hi =
1092 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1093
1094 cmd->sync_cmd = 1;
1095 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1096
1097 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1098 (instance->instancet->issue_dcmd(instance, cmd))) {
1099 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1100 __func__, __LINE__);
1101 return DCMD_NOT_FIRED;
1102 }
1103
1104 if (timeout) {
1105 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1106 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1107 if (!ret) {
1108 dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1109 __func__, __LINE__);
1110 return DCMD_TIMEOUT;
1111 }
1112 } else
1113 wait_event(instance->abort_cmd_wait_q,
1114 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1115
1116 cmd->sync_cmd = 0;
1117
1118 megasas_return_cmd(instance, cmd);
1119 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1120 DCMD_SUCCESS : DCMD_FAILED;
1121 }
1122
1123 /**
1124 * megasas_make_sgl32 - Prepares 32-bit SGL
1125 * @instance: Adapter soft state
1126 * @scp: SCSI command from the mid-layer
1127 * @mfi_sgl: SGL to be filled in
1128 *
1129 * If successful, this function returns the number of SG elements. Otherwise,
1130 * it returnes -1.
1131 */
1132 static int
1133 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1134 union megasas_sgl *mfi_sgl)
1135 {
1136 int i;
1137 int sge_count;
1138 struct scatterlist *os_sgl;
1139
1140 sge_count = scsi_dma_map(scp);
1141 BUG_ON(sge_count < 0);
1142
1143 if (sge_count) {
1144 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1145 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1146 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1147 }
1148 }
1149 return sge_count;
1150 }
1151
1152 /**
1153 * megasas_make_sgl64 - Prepares 64-bit SGL
1154 * @instance: Adapter soft state
1155 * @scp: SCSI command from the mid-layer
1156 * @mfi_sgl: SGL to be filled in
1157 *
1158 * If successful, this function returns the number of SG elements. Otherwise,
1159 * it returnes -1.
1160 */
1161 static int
1162 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1163 union megasas_sgl *mfi_sgl)
1164 {
1165 int i;
1166 int sge_count;
1167 struct scatterlist *os_sgl;
1168
1169 sge_count = scsi_dma_map(scp);
1170 BUG_ON(sge_count < 0);
1171
1172 if (sge_count) {
1173 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1174 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1175 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1176 }
1177 }
1178 return sge_count;
1179 }
1180
1181 /**
1182 * megasas_make_sgl_skinny - Prepares IEEE SGL
1183 * @instance: Adapter soft state
1184 * @scp: SCSI command from the mid-layer
1185 * @mfi_sgl: SGL to be filled in
1186 *
1187 * If successful, this function returns the number of SG elements. Otherwise,
1188 * it returnes -1.
1189 */
1190 static int
1191 megasas_make_sgl_skinny(struct megasas_instance *instance,
1192 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1193 {
1194 int i;
1195 int sge_count;
1196 struct scatterlist *os_sgl;
1197
1198 sge_count = scsi_dma_map(scp);
1199
1200 if (sge_count) {
1201 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1202 mfi_sgl->sge_skinny[i].length =
1203 cpu_to_le32(sg_dma_len(os_sgl));
1204 mfi_sgl->sge_skinny[i].phys_addr =
1205 cpu_to_le64(sg_dma_address(os_sgl));
1206 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1207 }
1208 }
1209 return sge_count;
1210 }
1211
1212 /**
1213 * megasas_get_frame_count - Computes the number of frames
1214 * @frame_type : type of frame- io or pthru frame
1215 * @sge_count : number of sg elements
1216 *
1217 * Returns the number of frames required for numnber of sge's (sge_count)
1218 */
1219
1220 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1221 u8 sge_count, u8 frame_type)
1222 {
1223 int num_cnt;
1224 int sge_bytes;
1225 u32 sge_sz;
1226 u32 frame_count = 0;
1227
1228 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1229 sizeof(struct megasas_sge32);
1230
1231 if (instance->flag_ieee) {
1232 sge_sz = sizeof(struct megasas_sge_skinny);
1233 }
1234
1235 /*
1236 * Main frame can contain 2 SGEs for 64-bit SGLs and
1237 * 3 SGEs for 32-bit SGLs for ldio &
1238 * 1 SGEs for 64-bit SGLs and
1239 * 2 SGEs for 32-bit SGLs for pthru frame
1240 */
1241 if (unlikely(frame_type == PTHRU_FRAME)) {
1242 if (instance->flag_ieee == 1) {
1243 num_cnt = sge_count - 1;
1244 } else if (IS_DMA64)
1245 num_cnt = sge_count - 1;
1246 else
1247 num_cnt = sge_count - 2;
1248 } else {
1249 if (instance->flag_ieee == 1) {
1250 num_cnt = sge_count - 1;
1251 } else if (IS_DMA64)
1252 num_cnt = sge_count - 2;
1253 else
1254 num_cnt = sge_count - 3;
1255 }
1256
1257 if (num_cnt > 0) {
1258 sge_bytes = sge_sz * num_cnt;
1259
1260 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1261 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1262 }
1263 /* Main frame */
1264 frame_count += 1;
1265
1266 if (frame_count > 7)
1267 frame_count = 8;
1268 return frame_count;
1269 }
1270
1271 /**
1272 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1273 * @instance: Adapter soft state
1274 * @scp: SCSI command
1275 * @cmd: Command to be prepared in
1276 *
1277 * This function prepares CDB commands. These are typcially pass-through
1278 * commands to the devices.
1279 */
1280 static int
1281 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1282 struct megasas_cmd *cmd)
1283 {
1284 u32 is_logical;
1285 u32 device_id;
1286 u16 flags = 0;
1287 struct megasas_pthru_frame *pthru;
1288
1289 is_logical = MEGASAS_IS_LOGICAL(scp);
1290 device_id = MEGASAS_DEV_INDEX(scp);
1291 pthru = (struct megasas_pthru_frame *)cmd->frame;
1292
1293 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1294 flags = MFI_FRAME_DIR_WRITE;
1295 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1296 flags = MFI_FRAME_DIR_READ;
1297 else if (scp->sc_data_direction == PCI_DMA_NONE)
1298 flags = MFI_FRAME_DIR_NONE;
1299
1300 if (instance->flag_ieee == 1) {
1301 flags |= MFI_FRAME_IEEE;
1302 }
1303
1304 /*
1305 * Prepare the DCDB frame
1306 */
1307 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1308 pthru->cmd_status = 0x0;
1309 pthru->scsi_status = 0x0;
1310 pthru->target_id = device_id;
1311 pthru->lun = scp->device->lun;
1312 pthru->cdb_len = scp->cmd_len;
1313 pthru->timeout = 0;
1314 pthru->pad_0 = 0;
1315 pthru->flags = cpu_to_le16(flags);
1316 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1317
1318 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1319
1320 /*
1321 * If the command is for the tape device, set the
1322 * pthru timeout to the os layer timeout value.
1323 */
1324 if (scp->device->type == TYPE_TAPE) {
1325 if ((scp->request->timeout / HZ) > 0xFFFF)
1326 pthru->timeout = cpu_to_le16(0xFFFF);
1327 else
1328 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1329 }
1330
1331 /*
1332 * Construct SGL
1333 */
1334 if (instance->flag_ieee == 1) {
1335 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1336 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1337 &pthru->sgl);
1338 } else if (IS_DMA64) {
1339 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1340 pthru->sge_count = megasas_make_sgl64(instance, scp,
1341 &pthru->sgl);
1342 } else
1343 pthru->sge_count = megasas_make_sgl32(instance, scp,
1344 &pthru->sgl);
1345
1346 if (pthru->sge_count > instance->max_num_sge) {
1347 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1348 pthru->sge_count);
1349 return 0;
1350 }
1351
1352 /*
1353 * Sense info specific
1354 */
1355 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1356 pthru->sense_buf_phys_addr_hi =
1357 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1358 pthru->sense_buf_phys_addr_lo =
1359 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1360
1361 /*
1362 * Compute the total number of frames this command consumes. FW uses
1363 * this number to pull sufficient number of frames from host memory.
1364 */
1365 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1366 PTHRU_FRAME);
1367
1368 return cmd->frame_count;
1369 }
1370
1371 /**
1372 * megasas_build_ldio - Prepares IOs to logical devices
1373 * @instance: Adapter soft state
1374 * @scp: SCSI command
1375 * @cmd: Command to be prepared
1376 *
1377 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1378 */
1379 static int
1380 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1381 struct megasas_cmd *cmd)
1382 {
1383 u32 device_id;
1384 u8 sc = scp->cmnd[0];
1385 u16 flags = 0;
1386 struct megasas_io_frame *ldio;
1387
1388 device_id = MEGASAS_DEV_INDEX(scp);
1389 ldio = (struct megasas_io_frame *)cmd->frame;
1390
1391 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1392 flags = MFI_FRAME_DIR_WRITE;
1393 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1394 flags = MFI_FRAME_DIR_READ;
1395
1396 if (instance->flag_ieee == 1) {
1397 flags |= MFI_FRAME_IEEE;
1398 }
1399
1400 /*
1401 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1402 */
1403 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1404 ldio->cmd_status = 0x0;
1405 ldio->scsi_status = 0x0;
1406 ldio->target_id = device_id;
1407 ldio->timeout = 0;
1408 ldio->reserved_0 = 0;
1409 ldio->pad_0 = 0;
1410 ldio->flags = cpu_to_le16(flags);
1411 ldio->start_lba_hi = 0;
1412 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1413
1414 /*
1415 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1416 */
1417 if (scp->cmd_len == 6) {
1418 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1419 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1420 ((u32) scp->cmnd[2] << 8) |
1421 (u32) scp->cmnd[3]);
1422
1423 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1424 }
1425
1426 /*
1427 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1428 */
1429 else if (scp->cmd_len == 10) {
1430 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1431 ((u32) scp->cmnd[7] << 8));
1432 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1433 ((u32) scp->cmnd[3] << 16) |
1434 ((u32) scp->cmnd[4] << 8) |
1435 (u32) scp->cmnd[5]);
1436 }
1437
1438 /*
1439 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1440 */
1441 else if (scp->cmd_len == 12) {
1442 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1443 ((u32) scp->cmnd[7] << 16) |
1444 ((u32) scp->cmnd[8] << 8) |
1445 (u32) scp->cmnd[9]);
1446
1447 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1448 ((u32) scp->cmnd[3] << 16) |
1449 ((u32) scp->cmnd[4] << 8) |
1450 (u32) scp->cmnd[5]);
1451 }
1452
1453 /*
1454 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1455 */
1456 else if (scp->cmd_len == 16) {
1457 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1458 ((u32) scp->cmnd[11] << 16) |
1459 ((u32) scp->cmnd[12] << 8) |
1460 (u32) scp->cmnd[13]);
1461
1462 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1463 ((u32) scp->cmnd[7] << 16) |
1464 ((u32) scp->cmnd[8] << 8) |
1465 (u32) scp->cmnd[9]);
1466
1467 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1468 ((u32) scp->cmnd[3] << 16) |
1469 ((u32) scp->cmnd[4] << 8) |
1470 (u32) scp->cmnd[5]);
1471
1472 }
1473
1474 /*
1475 * Construct SGL
1476 */
1477 if (instance->flag_ieee) {
1478 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1479 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1480 &ldio->sgl);
1481 } else if (IS_DMA64) {
1482 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1483 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1484 } else
1485 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1486
1487 if (ldio->sge_count > instance->max_num_sge) {
1488 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1489 ldio->sge_count);
1490 return 0;
1491 }
1492
1493 /*
1494 * Sense info specific
1495 */
1496 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1497 ldio->sense_buf_phys_addr_hi = 0;
1498 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1499
1500 /*
1501 * Compute the total number of frames this command consumes. FW uses
1502 * this number to pull sufficient number of frames from host memory.
1503 */
1504 cmd->frame_count = megasas_get_frame_count(instance,
1505 ldio->sge_count, IO_FRAME);
1506
1507 return cmd->frame_count;
1508 }
1509
1510 /**
1511 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1512 * and whether it's RW or non RW
1513 * @scmd: SCSI command
1514 *
1515 */
1516 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1517 {
1518 int ret;
1519
1520 switch (cmd->cmnd[0]) {
1521 case READ_10:
1522 case WRITE_10:
1523 case READ_12:
1524 case WRITE_12:
1525 case READ_6:
1526 case WRITE_6:
1527 case READ_16:
1528 case WRITE_16:
1529 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1530 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1531 break;
1532 default:
1533 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1534 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1535 }
1536 return ret;
1537 }
1538
1539 /**
1540 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1541 * in FW
1542 * @instance: Adapter soft state
1543 */
1544 static inline void
1545 megasas_dump_pending_frames(struct megasas_instance *instance)
1546 {
1547 struct megasas_cmd *cmd;
1548 int i,n;
1549 union megasas_sgl *mfi_sgl;
1550 struct megasas_io_frame *ldio;
1551 struct megasas_pthru_frame *pthru;
1552 u32 sgcount;
1553 u32 max_cmd = instance->max_fw_cmds;
1554
1555 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1556 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1557 if (IS_DMA64)
1558 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1559 else
1560 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1561
1562 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1563 for (i = 0; i < max_cmd; i++) {
1564 cmd = instance->cmd_list[i];
1565 if (!cmd->scmd)
1566 continue;
1567 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1568 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1569 ldio = (struct megasas_io_frame *)cmd->frame;
1570 mfi_sgl = &ldio->sgl;
1571 sgcount = ldio->sge_count;
1572 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1573 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1574 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1575 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1576 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1577 } else {
1578 pthru = (struct megasas_pthru_frame *) cmd->frame;
1579 mfi_sgl = &pthru->sgl;
1580 sgcount = pthru->sge_count;
1581 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1582 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1583 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1584 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1585 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1586 }
1587 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1588 for (n = 0; n < sgcount; n++) {
1589 if (IS_DMA64)
1590 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1591 le32_to_cpu(mfi_sgl->sge64[n].length),
1592 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1593 else
1594 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1595 le32_to_cpu(mfi_sgl->sge32[n].length),
1596 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1597 }
1598 }
1599 } /*for max_cmd*/
1600 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1601 for (i = 0; i < max_cmd; i++) {
1602
1603 cmd = instance->cmd_list[i];
1604
1605 if (cmd->sync_cmd == 1)
1606 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1607 }
1608 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1609 }
1610
1611 u32
1612 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1613 struct scsi_cmnd *scmd)
1614 {
1615 struct megasas_cmd *cmd;
1616 u32 frame_count;
1617
1618 cmd = megasas_get_cmd(instance);
1619 if (!cmd)
1620 return SCSI_MLQUEUE_HOST_BUSY;
1621
1622 /*
1623 * Logical drive command
1624 */
1625 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1626 frame_count = megasas_build_ldio(instance, scmd, cmd);
1627 else
1628 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1629
1630 if (!frame_count)
1631 goto out_return_cmd;
1632
1633 cmd->scmd = scmd;
1634 scmd->SCp.ptr = (char *)cmd;
1635
1636 /*
1637 * Issue the command to the FW
1638 */
1639 atomic_inc(&instance->fw_outstanding);
1640
1641 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1642 cmd->frame_count-1, instance->reg_set);
1643
1644 return 0;
1645 out_return_cmd:
1646 megasas_return_cmd(instance, cmd);
1647 return SCSI_MLQUEUE_HOST_BUSY;
1648 }
1649
1650
1651 /**
1652 * megasas_queue_command - Queue entry point
1653 * @scmd: SCSI command to be queued
1654 * @done: Callback entry point
1655 */
1656 static int
1657 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1658 {
1659 struct megasas_instance *instance;
1660 struct MR_PRIV_DEVICE *mr_device_priv_data;
1661
1662 instance = (struct megasas_instance *)
1663 scmd->device->host->hostdata;
1664
1665 if (instance->unload == 1) {
1666 scmd->result = DID_NO_CONNECT << 16;
1667 scmd->scsi_done(scmd);
1668 return 0;
1669 }
1670
1671 if (instance->issuepend_done == 0)
1672 return SCSI_MLQUEUE_HOST_BUSY;
1673
1674
1675 /* Check for an mpio path and adjust behavior */
1676 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1677 if (megasas_check_mpio_paths(instance, scmd) ==
1678 (DID_RESET << 16)) {
1679 return SCSI_MLQUEUE_HOST_BUSY;
1680 } else {
1681 scmd->result = DID_NO_CONNECT << 16;
1682 scmd->scsi_done(scmd);
1683 return 0;
1684 }
1685 }
1686
1687 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1688 scmd->result = DID_NO_CONNECT << 16;
1689 scmd->scsi_done(scmd);
1690 return 0;
1691 }
1692
1693 mr_device_priv_data = scmd->device->hostdata;
1694 if (!mr_device_priv_data) {
1695 scmd->result = DID_NO_CONNECT << 16;
1696 scmd->scsi_done(scmd);
1697 return 0;
1698 }
1699
1700 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1701 return SCSI_MLQUEUE_HOST_BUSY;
1702
1703 if (mr_device_priv_data->tm_busy)
1704 return SCSI_MLQUEUE_DEVICE_BUSY;
1705
1706
1707 scmd->result = 0;
1708
1709 if (MEGASAS_IS_LOGICAL(scmd) &&
1710 (scmd->device->id >= instance->fw_supported_vd_count ||
1711 scmd->device->lun)) {
1712 scmd->result = DID_BAD_TARGET << 16;
1713 goto out_done;
1714 }
1715
1716 switch (scmd->cmnd[0]) {
1717 case SYNCHRONIZE_CACHE:
1718 /*
1719 * FW takes care of flush cache on its own
1720 * No need to send it down
1721 */
1722 scmd->result = DID_OK << 16;
1723 goto out_done;
1724 default:
1725 break;
1726 }
1727
1728 return instance->instancet->build_and_issue_cmd(instance, scmd);
1729
1730 out_done:
1731 scmd->scsi_done(scmd);
1732 return 0;
1733 }
1734
1735 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1736 {
1737 int i;
1738
1739 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1740
1741 if ((megasas_mgmt_info.instance[i]) &&
1742 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1743 return megasas_mgmt_info.instance[i];
1744 }
1745
1746 return NULL;
1747 }
1748
1749 /*
1750 * megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities
1751 *
1752 * @sdev: OS provided scsi device
1753 *
1754 * Returns void
1755 */
1756 void megasas_update_sdev_properties(struct scsi_device *sdev)
1757 {
1758 u16 pd_index = 0;
1759 u32 device_id, ld;
1760 struct megasas_instance *instance;
1761 struct fusion_context *fusion;
1762 struct MR_PRIV_DEVICE *mr_device_priv_data;
1763 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1764 struct MR_LD_RAID *raid;
1765 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1766
1767 instance = megasas_lookup_instance(sdev->host->host_no);
1768 fusion = instance->ctrl_context;
1769 mr_device_priv_data = sdev->hostdata;
1770
1771 if (!fusion)
1772 return;
1773
1774 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1775 instance->use_seqnum_jbod_fp) {
1776 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1777 sdev->id;
1778 pd_sync = (void *)fusion->pd_seq_sync
1779 [(instance->pd_seq_map_id - 1) & 1];
1780 mr_device_priv_data->is_tm_capable =
1781 pd_sync->seq[pd_index].capability.tmCapable;
1782 } else {
1783 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1784 + sdev->id;
1785 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1786 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1787 raid = MR_LdRaidGet(ld, local_map_ptr);
1788
1789 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1790 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1791 mr_device_priv_data->is_tm_capable =
1792 raid->capability.tmCapable;
1793 }
1794 }
1795
1796 static void megasas_set_device_queue_depth(struct scsi_device *sdev)
1797 {
1798 u16 pd_index = 0;
1799 int ret = DCMD_FAILED;
1800 struct megasas_instance *instance;
1801
1802 instance = megasas_lookup_instance(sdev->host->host_no);
1803
1804 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1805 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1806
1807 if (instance->pd_info) {
1808 mutex_lock(&instance->hba_mutex);
1809 ret = megasas_get_pd_info(instance, pd_index);
1810 mutex_unlock(&instance->hba_mutex);
1811 }
1812
1813 if (ret != DCMD_SUCCESS)
1814 return;
1815
1816 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1817
1818 switch (instance->pd_list[pd_index].interface) {
1819 case SAS_PD:
1820 scsi_change_queue_depth(sdev, MEGASAS_SAS_QD);
1821 break;
1822
1823 case SATA_PD:
1824 scsi_change_queue_depth(sdev, MEGASAS_SATA_QD);
1825 break;
1826
1827 default:
1828 scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD);
1829 }
1830 }
1831 }
1832 }
1833
1834
1835 static int megasas_slave_configure(struct scsi_device *sdev)
1836 {
1837 u16 pd_index = 0;
1838 struct megasas_instance *instance;
1839
1840 instance = megasas_lookup_instance(sdev->host->host_no);
1841 if (instance->pd_list_not_supported) {
1842 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1843 sdev->type == TYPE_DISK) {
1844 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1845 sdev->id;
1846 if (instance->pd_list[pd_index].driveState !=
1847 MR_PD_STATE_SYSTEM)
1848 return -ENXIO;
1849 }
1850 }
1851 megasas_set_device_queue_depth(sdev);
1852 megasas_update_sdev_properties(sdev);
1853
1854 /*
1855 * The RAID firmware may require extended timeouts.
1856 */
1857 blk_queue_rq_timeout(sdev->request_queue,
1858 scmd_timeout * HZ);
1859
1860 return 0;
1861 }
1862
1863 static int megasas_slave_alloc(struct scsi_device *sdev)
1864 {
1865 u16 pd_index = 0;
1866 struct megasas_instance *instance ;
1867 struct MR_PRIV_DEVICE *mr_device_priv_data;
1868
1869 instance = megasas_lookup_instance(sdev->host->host_no);
1870 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1871 /*
1872 * Open the OS scan to the SYSTEM PD
1873 */
1874 pd_index =
1875 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1876 sdev->id;
1877 if ((instance->pd_list_not_supported ||
1878 instance->pd_list[pd_index].driveState ==
1879 MR_PD_STATE_SYSTEM)) {
1880 goto scan_target;
1881 }
1882 return -ENXIO;
1883 }
1884
1885 scan_target:
1886 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
1887 GFP_KERNEL);
1888 if (!mr_device_priv_data)
1889 return -ENOMEM;
1890 sdev->hostdata = mr_device_priv_data;
1891 return 0;
1892 }
1893
1894 static void megasas_slave_destroy(struct scsi_device *sdev)
1895 {
1896 kfree(sdev->hostdata);
1897 sdev->hostdata = NULL;
1898 }
1899
1900 /*
1901 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1902 * kill adapter
1903 * @instance: Adapter soft state
1904 *
1905 */
1906 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1907 {
1908 int i;
1909 struct megasas_cmd *cmd_mfi;
1910 struct megasas_cmd_fusion *cmd_fusion;
1911 struct fusion_context *fusion = instance->ctrl_context;
1912
1913 /* Find all outstanding ioctls */
1914 if (fusion) {
1915 for (i = 0; i < instance->max_fw_cmds; i++) {
1916 cmd_fusion = fusion->cmd_list[i];
1917 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1918 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1919 if (cmd_mfi->sync_cmd &&
1920 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1921 megasas_complete_cmd(instance,
1922 cmd_mfi, DID_OK);
1923 }
1924 }
1925 } else {
1926 for (i = 0; i < instance->max_fw_cmds; i++) {
1927 cmd_mfi = instance->cmd_list[i];
1928 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1929 MFI_CMD_ABORT)
1930 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1931 }
1932 }
1933 }
1934
1935
1936 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1937 {
1938 /* Set critical error to block I/O & ioctls in case caller didn't */
1939 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
1940 /* Wait 1 second to ensure IO or ioctls in build have posted */
1941 msleep(1000);
1942 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1943 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1944 (instance->ctrl_context)) {
1945 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1946 /* Flush */
1947 readl(&instance->reg_set->doorbell);
1948 if (instance->requestorId && instance->peerIsPresent)
1949 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1950 } else {
1951 writel(MFI_STOP_ADP,
1952 &instance->reg_set->inbound_doorbell);
1953 }
1954 /* Complete outstanding ioctls when adapter is killed */
1955 megasas_complete_outstanding_ioctls(instance);
1956 }
1957
1958 /**
1959 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1960 * restored to max value
1961 * @instance: Adapter soft state
1962 *
1963 */
1964 void
1965 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1966 {
1967 unsigned long flags;
1968
1969 if (instance->flag & MEGASAS_FW_BUSY
1970 && time_after(jiffies, instance->last_time + 5 * HZ)
1971 && atomic_read(&instance->fw_outstanding) <
1972 instance->throttlequeuedepth + 1) {
1973
1974 spin_lock_irqsave(instance->host->host_lock, flags);
1975 instance->flag &= ~MEGASAS_FW_BUSY;
1976
1977 instance->host->can_queue = instance->cur_can_queue;
1978 spin_unlock_irqrestore(instance->host->host_lock, flags);
1979 }
1980 }
1981
1982 /**
1983 * megasas_complete_cmd_dpc - Returns FW's controller structure
1984 * @instance_addr: Address of adapter soft state
1985 *
1986 * Tasklet to complete cmds
1987 */
1988 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1989 {
1990 u32 producer;
1991 u32 consumer;
1992 u32 context;
1993 struct megasas_cmd *cmd;
1994 struct megasas_instance *instance =
1995 (struct megasas_instance *)instance_addr;
1996 unsigned long flags;
1997
1998 /* If we have already declared adapter dead, donot complete cmds */
1999 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2000 return;
2001
2002 spin_lock_irqsave(&instance->completion_lock, flags);
2003
2004 producer = le32_to_cpu(*instance->producer);
2005 consumer = le32_to_cpu(*instance->consumer);
2006
2007 while (consumer != producer) {
2008 context = le32_to_cpu(instance->reply_queue[consumer]);
2009 if (context >= instance->max_fw_cmds) {
2010 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2011 context);
2012 BUG();
2013 }
2014
2015 cmd = instance->cmd_list[context];
2016
2017 megasas_complete_cmd(instance, cmd, DID_OK);
2018
2019 consumer++;
2020 if (consumer == (instance->max_fw_cmds + 1)) {
2021 consumer = 0;
2022 }
2023 }
2024
2025 *instance->consumer = cpu_to_le32(producer);
2026
2027 spin_unlock_irqrestore(&instance->completion_lock, flags);
2028
2029 /*
2030 * Check if we can restore can_queue
2031 */
2032 megasas_check_and_restore_queue_depth(instance);
2033 }
2034
2035 /**
2036 * megasas_start_timer - Initializes a timer object
2037 * @instance: Adapter soft state
2038 * @timer: timer object to be initialized
2039 * @fn: timer function
2040 * @interval: time interval between timer function call
2041 *
2042 */
2043 void megasas_start_timer(struct megasas_instance *instance,
2044 struct timer_list *timer,
2045 void *fn, unsigned long interval)
2046 {
2047 init_timer(timer);
2048 timer->expires = jiffies + interval;
2049 timer->data = (unsigned long)instance;
2050 timer->function = fn;
2051 add_timer(timer);
2052 }
2053
2054 static void
2055 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2056
2057 static void
2058 process_fw_state_change_wq(struct work_struct *work);
2059
2060 void megasas_do_ocr(struct megasas_instance *instance)
2061 {
2062 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2063 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2064 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2065 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2066 }
2067 instance->instancet->disable_intr(instance);
2068 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2069 instance->issuepend_done = 0;
2070
2071 atomic_set(&instance->fw_outstanding, 0);
2072 megasas_internal_reset_defer_cmds(instance);
2073 process_fw_state_change_wq(&instance->work_init);
2074 }
2075
2076 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2077 int initial)
2078 {
2079 struct megasas_cmd *cmd;
2080 struct megasas_dcmd_frame *dcmd;
2081 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2082 dma_addr_t new_affiliation_111_h;
2083 int ld, retval = 0;
2084 u8 thisVf;
2085
2086 cmd = megasas_get_cmd(instance);
2087
2088 if (!cmd) {
2089 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2090 "Failed to get cmd for scsi%d\n",
2091 instance->host->host_no);
2092 return -ENOMEM;
2093 }
2094
2095 dcmd = &cmd->frame->dcmd;
2096
2097 if (!instance->vf_affiliation_111) {
2098 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2099 "affiliation for scsi%d\n", instance->host->host_no);
2100 megasas_return_cmd(instance, cmd);
2101 return -ENOMEM;
2102 }
2103
2104 if (initial)
2105 memset(instance->vf_affiliation_111, 0,
2106 sizeof(struct MR_LD_VF_AFFILIATION_111));
2107 else {
2108 new_affiliation_111 =
2109 pci_alloc_consistent(instance->pdev,
2110 sizeof(struct MR_LD_VF_AFFILIATION_111),
2111 &new_affiliation_111_h);
2112 if (!new_affiliation_111) {
2113 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2114 "memory for new affiliation for scsi%d\n",
2115 instance->host->host_no);
2116 megasas_return_cmd(instance, cmd);
2117 return -ENOMEM;
2118 }
2119 memset(new_affiliation_111, 0,
2120 sizeof(struct MR_LD_VF_AFFILIATION_111));
2121 }
2122
2123 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2124
2125 dcmd->cmd = MFI_CMD_DCMD;
2126 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2127 dcmd->sge_count = 1;
2128 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2129 dcmd->timeout = 0;
2130 dcmd->pad_0 = 0;
2131 dcmd->data_xfer_len =
2132 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2133 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2134
2135 if (initial)
2136 dcmd->sgl.sge32[0].phys_addr =
2137 cpu_to_le32(instance->vf_affiliation_111_h);
2138 else
2139 dcmd->sgl.sge32[0].phys_addr =
2140 cpu_to_le32(new_affiliation_111_h);
2141
2142 dcmd->sgl.sge32[0].length = cpu_to_le32(
2143 sizeof(struct MR_LD_VF_AFFILIATION_111));
2144
2145 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2146 "scsi%d\n", instance->host->host_no);
2147
2148 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2149 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2150 " failed with status 0x%x for scsi%d\n",
2151 dcmd->cmd_status, instance->host->host_no);
2152 retval = 1; /* Do a scan if we couldn't get affiliation */
2153 goto out;
2154 }
2155
2156 if (!initial) {
2157 thisVf = new_affiliation_111->thisVf;
2158 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2159 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2160 new_affiliation_111->map[ld].policy[thisVf]) {
2161 dev_warn(&instance->pdev->dev, "SR-IOV: "
2162 "Got new LD/VF affiliation for scsi%d\n",
2163 instance->host->host_no);
2164 memcpy(instance->vf_affiliation_111,
2165 new_affiliation_111,
2166 sizeof(struct MR_LD_VF_AFFILIATION_111));
2167 retval = 1;
2168 goto out;
2169 }
2170 }
2171 out:
2172 if (new_affiliation_111) {
2173 pci_free_consistent(instance->pdev,
2174 sizeof(struct MR_LD_VF_AFFILIATION_111),
2175 new_affiliation_111,
2176 new_affiliation_111_h);
2177 }
2178
2179 megasas_return_cmd(instance, cmd);
2180
2181 return retval;
2182 }
2183
2184 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2185 int initial)
2186 {
2187 struct megasas_cmd *cmd;
2188 struct megasas_dcmd_frame *dcmd;
2189 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2190 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2191 dma_addr_t new_affiliation_h;
2192 int i, j, retval = 0, found = 0, doscan = 0;
2193 u8 thisVf;
2194
2195 cmd = megasas_get_cmd(instance);
2196
2197 if (!cmd) {
2198 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2199 "Failed to get cmd for scsi%d\n",
2200 instance->host->host_no);
2201 return -ENOMEM;
2202 }
2203
2204 dcmd = &cmd->frame->dcmd;
2205
2206 if (!instance->vf_affiliation) {
2207 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2208 "affiliation for scsi%d\n", instance->host->host_no);
2209 megasas_return_cmd(instance, cmd);
2210 return -ENOMEM;
2211 }
2212
2213 if (initial)
2214 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2215 sizeof(struct MR_LD_VF_AFFILIATION));
2216 else {
2217 new_affiliation =
2218 pci_alloc_consistent(instance->pdev,
2219 (MAX_LOGICAL_DRIVES + 1) *
2220 sizeof(struct MR_LD_VF_AFFILIATION),
2221 &new_affiliation_h);
2222 if (!new_affiliation) {
2223 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2224 "memory for new affiliation for scsi%d\n",
2225 instance->host->host_no);
2226 megasas_return_cmd(instance, cmd);
2227 return -ENOMEM;
2228 }
2229 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2230 sizeof(struct MR_LD_VF_AFFILIATION));
2231 }
2232
2233 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2234
2235 dcmd->cmd = MFI_CMD_DCMD;
2236 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2237 dcmd->sge_count = 1;
2238 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2239 dcmd->timeout = 0;
2240 dcmd->pad_0 = 0;
2241 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2242 sizeof(struct MR_LD_VF_AFFILIATION));
2243 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2244
2245 if (initial)
2246 dcmd->sgl.sge32[0].phys_addr =
2247 cpu_to_le32(instance->vf_affiliation_h);
2248 else
2249 dcmd->sgl.sge32[0].phys_addr =
2250 cpu_to_le32(new_affiliation_h);
2251
2252 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2253 sizeof(struct MR_LD_VF_AFFILIATION));
2254
2255 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2256 "scsi%d\n", instance->host->host_no);
2257
2258
2259 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2260 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2261 " failed with status 0x%x for scsi%d\n",
2262 dcmd->cmd_status, instance->host->host_no);
2263 retval = 1; /* Do a scan if we couldn't get affiliation */
2264 goto out;
2265 }
2266
2267 if (!initial) {
2268 if (!new_affiliation->ldCount) {
2269 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2270 "affiliation for passive path for scsi%d\n",
2271 instance->host->host_no);
2272 retval = 1;
2273 goto out;
2274 }
2275 newmap = new_affiliation->map;
2276 savedmap = instance->vf_affiliation->map;
2277 thisVf = new_affiliation->thisVf;
2278 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2279 found = 0;
2280 for (j = 0; j < instance->vf_affiliation->ldCount;
2281 j++) {
2282 if (newmap->ref.targetId ==
2283 savedmap->ref.targetId) {
2284 found = 1;
2285 if (newmap->policy[thisVf] !=
2286 savedmap->policy[thisVf]) {
2287 doscan = 1;
2288 goto out;
2289 }
2290 }
2291 savedmap = (struct MR_LD_VF_MAP *)
2292 ((unsigned char *)savedmap +
2293 savedmap->size);
2294 }
2295 if (!found && newmap->policy[thisVf] !=
2296 MR_LD_ACCESS_HIDDEN) {
2297 doscan = 1;
2298 goto out;
2299 }
2300 newmap = (struct MR_LD_VF_MAP *)
2301 ((unsigned char *)newmap + newmap->size);
2302 }
2303
2304 newmap = new_affiliation->map;
2305 savedmap = instance->vf_affiliation->map;
2306
2307 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2308 found = 0;
2309 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2310 if (savedmap->ref.targetId ==
2311 newmap->ref.targetId) {
2312 found = 1;
2313 if (savedmap->policy[thisVf] !=
2314 newmap->policy[thisVf]) {
2315 doscan = 1;
2316 goto out;
2317 }
2318 }
2319 newmap = (struct MR_LD_VF_MAP *)
2320 ((unsigned char *)newmap +
2321 newmap->size);
2322 }
2323 if (!found && savedmap->policy[thisVf] !=
2324 MR_LD_ACCESS_HIDDEN) {
2325 doscan = 1;
2326 goto out;
2327 }
2328 savedmap = (struct MR_LD_VF_MAP *)
2329 ((unsigned char *)savedmap +
2330 savedmap->size);
2331 }
2332 }
2333 out:
2334 if (doscan) {
2335 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2336 "affiliation for scsi%d\n", instance->host->host_no);
2337 memcpy(instance->vf_affiliation, new_affiliation,
2338 new_affiliation->size);
2339 retval = 1;
2340 }
2341
2342 if (new_affiliation)
2343 pci_free_consistent(instance->pdev,
2344 (MAX_LOGICAL_DRIVES + 1) *
2345 sizeof(struct MR_LD_VF_AFFILIATION),
2346 new_affiliation, new_affiliation_h);
2347 megasas_return_cmd(instance, cmd);
2348
2349 return retval;
2350 }
2351
2352 /* This function will get the current SR-IOV LD/VF affiliation */
2353 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2354 int initial)
2355 {
2356 int retval;
2357
2358 if (instance->PlasmaFW111)
2359 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2360 else
2361 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2362 return retval;
2363 }
2364
2365 /* This function will tell FW to start the SR-IOV heartbeat */
2366 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2367 int initial)
2368 {
2369 struct megasas_cmd *cmd;
2370 struct megasas_dcmd_frame *dcmd;
2371 int retval = 0;
2372
2373 cmd = megasas_get_cmd(instance);
2374
2375 if (!cmd) {
2376 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2377 "Failed to get cmd for scsi%d\n",
2378 instance->host->host_no);
2379 return -ENOMEM;
2380 }
2381
2382 dcmd = &cmd->frame->dcmd;
2383
2384 if (initial) {
2385 instance->hb_host_mem =
2386 pci_zalloc_consistent(instance->pdev,
2387 sizeof(struct MR_CTRL_HB_HOST_MEM),
2388 &instance->hb_host_mem_h);
2389 if (!instance->hb_host_mem) {
2390 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2391 " memory for heartbeat host memory for scsi%d\n",
2392 instance->host->host_no);
2393 retval = -ENOMEM;
2394 goto out;
2395 }
2396 }
2397
2398 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2399
2400 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2401 dcmd->cmd = MFI_CMD_DCMD;
2402 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2403 dcmd->sge_count = 1;
2404 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2405 dcmd->timeout = 0;
2406 dcmd->pad_0 = 0;
2407 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2408 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2409 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2410 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2411
2412 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2413 instance->host->host_no);
2414
2415 if (instance->ctrl_context && !instance->mask_interrupts)
2416 retval = megasas_issue_blocked_cmd(instance, cmd,
2417 MEGASAS_ROUTINE_WAIT_TIME_VF);
2418 else
2419 retval = megasas_issue_polled(instance, cmd);
2420
2421 if (retval) {
2422 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2423 "_MEM_ALLOC DCMD %s for scsi%d\n",
2424 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2425 "timed out" : "failed", instance->host->host_no);
2426 retval = 1;
2427 }
2428
2429 out:
2430 megasas_return_cmd(instance, cmd);
2431
2432 return retval;
2433 }
2434
2435 /* Handler for SR-IOV heartbeat */
2436 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2437 {
2438 struct megasas_instance *instance =
2439 (struct megasas_instance *)instance_addr;
2440
2441 if (instance->hb_host_mem->HB.fwCounter !=
2442 instance->hb_host_mem->HB.driverCounter) {
2443 instance->hb_host_mem->HB.driverCounter =
2444 instance->hb_host_mem->HB.fwCounter;
2445 mod_timer(&instance->sriov_heartbeat_timer,
2446 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2447 } else {
2448 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2449 "completed for scsi%d\n", instance->host->host_no);
2450 schedule_work(&instance->work_init);
2451 }
2452 }
2453
2454 /**
2455 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2456 * @instance: Adapter soft state
2457 *
2458 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2459 * complete all its outstanding commands. Returns error if one or more IOs
2460 * are pending after this time period. It also marks the controller dead.
2461 */
2462 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2463 {
2464 int i, sl, outstanding;
2465 u32 reset_index;
2466 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2467 unsigned long flags;
2468 struct list_head clist_local;
2469 struct megasas_cmd *reset_cmd;
2470 u32 fw_state;
2471
2472 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2473 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2474 __func__, __LINE__);
2475 return FAILED;
2476 }
2477
2478 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2479
2480 INIT_LIST_HEAD(&clist_local);
2481 spin_lock_irqsave(&instance->hba_lock, flags);
2482 list_splice_init(&instance->internal_reset_pending_q,
2483 &clist_local);
2484 spin_unlock_irqrestore(&instance->hba_lock, flags);
2485
2486 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2487 for (i = 0; i < wait_time; i++) {
2488 msleep(1000);
2489 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2490 break;
2491 }
2492
2493 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2494 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2495 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2496 return FAILED;
2497 }
2498
2499 reset_index = 0;
2500 while (!list_empty(&clist_local)) {
2501 reset_cmd = list_entry((&clist_local)->next,
2502 struct megasas_cmd, list);
2503 list_del_init(&reset_cmd->list);
2504 if (reset_cmd->scmd) {
2505 reset_cmd->scmd->result = DID_RESET << 16;
2506 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2507 reset_index, reset_cmd,
2508 reset_cmd->scmd->cmnd[0]);
2509
2510 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2511 megasas_return_cmd(instance, reset_cmd);
2512 } else if (reset_cmd->sync_cmd) {
2513 dev_notice(&instance->pdev->dev, "%p synch cmds"
2514 "reset queue\n",
2515 reset_cmd);
2516
2517 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2518 instance->instancet->fire_cmd(instance,
2519 reset_cmd->frame_phys_addr,
2520 0, instance->reg_set);
2521 } else {
2522 dev_notice(&instance->pdev->dev, "%p unexpected"
2523 "cmds lst\n",
2524 reset_cmd);
2525 }
2526 reset_index++;
2527 }
2528
2529 return SUCCESS;
2530 }
2531
2532 for (i = 0; i < resetwaittime; i++) {
2533 outstanding = atomic_read(&instance->fw_outstanding);
2534
2535 if (!outstanding)
2536 break;
2537
2538 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2539 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2540 "commands to complete\n",i,outstanding);
2541 /*
2542 * Call cmd completion routine. Cmd to be
2543 * be completed directly without depending on isr.
2544 */
2545 megasas_complete_cmd_dpc((unsigned long)instance);
2546 }
2547
2548 msleep(1000);
2549 }
2550
2551 i = 0;
2552 outstanding = atomic_read(&instance->fw_outstanding);
2553 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2554
2555 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2556 goto no_outstanding;
2557
2558 if (instance->disableOnlineCtrlReset)
2559 goto kill_hba_and_failed;
2560 do {
2561 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2562 dev_info(&instance->pdev->dev,
2563 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2564 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2565 if (i == 3)
2566 goto kill_hba_and_failed;
2567 megasas_do_ocr(instance);
2568
2569 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2570 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2571 __func__, __LINE__);
2572 return FAILED;
2573 }
2574 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2575 __func__, __LINE__);
2576
2577 for (sl = 0; sl < 10; sl++)
2578 msleep(500);
2579
2580 outstanding = atomic_read(&instance->fw_outstanding);
2581
2582 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2583 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2584 goto no_outstanding;
2585 }
2586 i++;
2587 } while (i <= 3);
2588
2589 no_outstanding:
2590
2591 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2592 __func__, __LINE__);
2593 return SUCCESS;
2594
2595 kill_hba_and_failed:
2596
2597 /* Reset not supported, kill adapter */
2598 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2599 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2600 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2601 atomic_read(&instance->fw_outstanding));
2602 megasas_dump_pending_frames(instance);
2603 megaraid_sas_kill_hba(instance);
2604
2605 return FAILED;
2606 }
2607
2608 /**
2609 * megasas_generic_reset - Generic reset routine
2610 * @scmd: Mid-layer SCSI command
2611 *
2612 * This routine implements a generic reset handler for device, bus and host
2613 * reset requests. Device, bus and host specific reset handlers can use this
2614 * function after they do their specific tasks.
2615 */
2616 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2617 {
2618 int ret_val;
2619 struct megasas_instance *instance;
2620
2621 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2622
2623 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2624 scmd->cmnd[0], scmd->retries);
2625
2626 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2627 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2628 return FAILED;
2629 }
2630
2631 ret_val = megasas_wait_for_outstanding(instance);
2632 if (ret_val == SUCCESS)
2633 dev_notice(&instance->pdev->dev, "reset successful\n");
2634 else
2635 dev_err(&instance->pdev->dev, "failed to do reset\n");
2636
2637 return ret_val;
2638 }
2639
2640 /**
2641 * megasas_reset_timer - quiesce the adapter if required
2642 * @scmd: scsi cmnd
2643 *
2644 * Sets the FW busy flag and reduces the host->can_queue if the
2645 * cmd has not been completed within the timeout period.
2646 */
2647 static enum
2648 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2649 {
2650 struct megasas_instance *instance;
2651 unsigned long flags;
2652
2653 if (time_after(jiffies, scmd->jiffies_at_alloc +
2654 (scmd_timeout * 2) * HZ)) {
2655 return BLK_EH_NOT_HANDLED;
2656 }
2657
2658 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2659 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2660 /* FW is busy, throttle IO */
2661 spin_lock_irqsave(instance->host->host_lock, flags);
2662
2663 instance->host->can_queue = instance->throttlequeuedepth;
2664 instance->last_time = jiffies;
2665 instance->flag |= MEGASAS_FW_BUSY;
2666
2667 spin_unlock_irqrestore(instance->host->host_lock, flags);
2668 }
2669 return BLK_EH_RESET_TIMER;
2670 }
2671
2672 /**
2673 * megasas_reset_bus_host - Bus & host reset handler entry point
2674 */
2675 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2676 {
2677 int ret;
2678 struct megasas_instance *instance;
2679
2680 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2681
2682 /*
2683 * First wait for all commands to complete
2684 */
2685 if (instance->ctrl_context)
2686 ret = megasas_reset_fusion(scmd->device->host, 1);
2687 else
2688 ret = megasas_generic_reset(scmd);
2689
2690 return ret;
2691 }
2692
2693 /**
2694 * megasas_task_abort - Issues task abort request to firmware
2695 * (supported only for fusion adapters)
2696 * @scmd: SCSI command pointer
2697 */
2698 static int megasas_task_abort(struct scsi_cmnd *scmd)
2699 {
2700 int ret;
2701 struct megasas_instance *instance;
2702
2703 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2704
2705 if (instance->ctrl_context)
2706 ret = megasas_task_abort_fusion(scmd);
2707 else {
2708 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2709 ret = FAILED;
2710 }
2711
2712 return ret;
2713 }
2714
2715 /**
2716 * megasas_reset_target: Issues target reset request to firmware
2717 * (supported only for fusion adapters)
2718 * @scmd: SCSI command pointer
2719 */
2720 static int megasas_reset_target(struct scsi_cmnd *scmd)
2721 {
2722 int ret;
2723 struct megasas_instance *instance;
2724
2725 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2726
2727 if (instance->ctrl_context)
2728 ret = megasas_reset_target_fusion(scmd);
2729 else {
2730 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2731 ret = FAILED;
2732 }
2733
2734 return ret;
2735 }
2736
2737 /**
2738 * megasas_bios_param - Returns disk geometry for a disk
2739 * @sdev: device handle
2740 * @bdev: block device
2741 * @capacity: drive capacity
2742 * @geom: geometry parameters
2743 */
2744 static int
2745 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2746 sector_t capacity, int geom[])
2747 {
2748 int heads;
2749 int sectors;
2750 sector_t cylinders;
2751 unsigned long tmp;
2752
2753 /* Default heads (64) & sectors (32) */
2754 heads = 64;
2755 sectors = 32;
2756
2757 tmp = heads * sectors;
2758 cylinders = capacity;
2759
2760 sector_div(cylinders, tmp);
2761
2762 /*
2763 * Handle extended translation size for logical drives > 1Gb
2764 */
2765
2766 if (capacity >= 0x200000) {
2767 heads = 255;
2768 sectors = 63;
2769 tmp = heads*sectors;
2770 cylinders = capacity;
2771 sector_div(cylinders, tmp);
2772 }
2773
2774 geom[0] = heads;
2775 geom[1] = sectors;
2776 geom[2] = cylinders;
2777
2778 return 0;
2779 }
2780
2781 static void megasas_aen_polling(struct work_struct *work);
2782
2783 /**
2784 * megasas_service_aen - Processes an event notification
2785 * @instance: Adapter soft state
2786 * @cmd: AEN command completed by the ISR
2787 *
2788 * For AEN, driver sends a command down to FW that is held by the FW till an
2789 * event occurs. When an event of interest occurs, FW completes the command
2790 * that it was previously holding.
2791 *
2792 * This routines sends SIGIO signal to processes that have registered with the
2793 * driver for AEN.
2794 */
2795 static void
2796 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2797 {
2798 unsigned long flags;
2799
2800 /*
2801 * Don't signal app if it is just an aborted previously registered aen
2802 */
2803 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2804 spin_lock_irqsave(&poll_aen_lock, flags);
2805 megasas_poll_wait_aen = 1;
2806 spin_unlock_irqrestore(&poll_aen_lock, flags);
2807 wake_up(&megasas_poll_wait);
2808 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2809 }
2810 else
2811 cmd->abort_aen = 0;
2812
2813 instance->aen_cmd = NULL;
2814
2815 megasas_return_cmd(instance, cmd);
2816
2817 if ((instance->unload == 0) &&
2818 ((instance->issuepend_done == 1))) {
2819 struct megasas_aen_event *ev;
2820
2821 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2822 if (!ev) {
2823 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2824 } else {
2825 ev->instance = instance;
2826 instance->ev = ev;
2827 INIT_DELAYED_WORK(&ev->hotplug_work,
2828 megasas_aen_polling);
2829 schedule_delayed_work(&ev->hotplug_work, 0);
2830 }
2831 }
2832 }
2833
2834 static ssize_t
2835 megasas_fw_crash_buffer_store(struct device *cdev,
2836 struct device_attribute *attr, const char *buf, size_t count)
2837 {
2838 struct Scsi_Host *shost = class_to_shost(cdev);
2839 struct megasas_instance *instance =
2840 (struct megasas_instance *) shost->hostdata;
2841 int val = 0;
2842 unsigned long flags;
2843
2844 if (kstrtoint(buf, 0, &val) != 0)
2845 return -EINVAL;
2846
2847 spin_lock_irqsave(&instance->crashdump_lock, flags);
2848 instance->fw_crash_buffer_offset = val;
2849 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2850 return strlen(buf);
2851 }
2852
2853 static ssize_t
2854 megasas_fw_crash_buffer_show(struct device *cdev,
2855 struct device_attribute *attr, char *buf)
2856 {
2857 struct Scsi_Host *shost = class_to_shost(cdev);
2858 struct megasas_instance *instance =
2859 (struct megasas_instance *) shost->hostdata;
2860 u32 size;
2861 unsigned long buff_addr;
2862 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2863 unsigned long src_addr;
2864 unsigned long flags;
2865 u32 buff_offset;
2866
2867 spin_lock_irqsave(&instance->crashdump_lock, flags);
2868 buff_offset = instance->fw_crash_buffer_offset;
2869 if (!instance->crash_dump_buf &&
2870 !((instance->fw_crash_state == AVAILABLE) ||
2871 (instance->fw_crash_state == COPYING))) {
2872 dev_err(&instance->pdev->dev,
2873 "Firmware crash dump is not available\n");
2874 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2875 return -EINVAL;
2876 }
2877
2878 buff_addr = (unsigned long) buf;
2879
2880 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2881 dev_err(&instance->pdev->dev,
2882 "Firmware crash dump offset is out of range\n");
2883 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2884 return 0;
2885 }
2886
2887 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2888 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2889
2890 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2891 (buff_offset % dmachunk);
2892 memcpy(buf, (void *)src_addr, size);
2893 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2894
2895 return size;
2896 }
2897
2898 static ssize_t
2899 megasas_fw_crash_buffer_size_show(struct device *cdev,
2900 struct device_attribute *attr, char *buf)
2901 {
2902 struct Scsi_Host *shost = class_to_shost(cdev);
2903 struct megasas_instance *instance =
2904 (struct megasas_instance *) shost->hostdata;
2905
2906 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2907 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2908 }
2909
2910 static ssize_t
2911 megasas_fw_crash_state_store(struct device *cdev,
2912 struct device_attribute *attr, const char *buf, size_t count)
2913 {
2914 struct Scsi_Host *shost = class_to_shost(cdev);
2915 struct megasas_instance *instance =
2916 (struct megasas_instance *) shost->hostdata;
2917 int val = 0;
2918 unsigned long flags;
2919
2920 if (kstrtoint(buf, 0, &val) != 0)
2921 return -EINVAL;
2922
2923 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2924 dev_err(&instance->pdev->dev, "application updates invalid "
2925 "firmware crash state\n");
2926 return -EINVAL;
2927 }
2928
2929 instance->fw_crash_state = val;
2930
2931 if ((val == COPIED) || (val == COPY_ERROR)) {
2932 spin_lock_irqsave(&instance->crashdump_lock, flags);
2933 megasas_free_host_crash_buffer(instance);
2934 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2935 if (val == COPY_ERROR)
2936 dev_info(&instance->pdev->dev, "application failed to "
2937 "copy Firmware crash dump\n");
2938 else
2939 dev_info(&instance->pdev->dev, "Firmware crash dump "
2940 "copied successfully\n");
2941 }
2942 return strlen(buf);
2943 }
2944
2945 static ssize_t
2946 megasas_fw_crash_state_show(struct device *cdev,
2947 struct device_attribute *attr, char *buf)
2948 {
2949 struct Scsi_Host *shost = class_to_shost(cdev);
2950 struct megasas_instance *instance =
2951 (struct megasas_instance *) shost->hostdata;
2952
2953 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2954 }
2955
2956 static ssize_t
2957 megasas_page_size_show(struct device *cdev,
2958 struct device_attribute *attr, char *buf)
2959 {
2960 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2961 }
2962
2963 static ssize_t
2964 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
2965 char *buf)
2966 {
2967 struct Scsi_Host *shost = class_to_shost(cdev);
2968 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
2969
2970 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
2971 }
2972
2973 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2974 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2975 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2976 megasas_fw_crash_buffer_size_show, NULL);
2977 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2978 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2979 static DEVICE_ATTR(page_size, S_IRUGO,
2980 megasas_page_size_show, NULL);
2981 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
2982 megasas_ldio_outstanding_show, NULL);
2983
2984 struct device_attribute *megaraid_host_attrs[] = {
2985 &dev_attr_fw_crash_buffer_size,
2986 &dev_attr_fw_crash_buffer,
2987 &dev_attr_fw_crash_state,
2988 &dev_attr_page_size,
2989 &dev_attr_ldio_outstanding,
2990 NULL,
2991 };
2992
2993 /*
2994 * Scsi host template for megaraid_sas driver
2995 */
2996 static struct scsi_host_template megasas_template = {
2997
2998 .module = THIS_MODULE,
2999 .name = "Avago SAS based MegaRAID driver",
3000 .proc_name = "megaraid_sas",
3001 .slave_configure = megasas_slave_configure,
3002 .slave_alloc = megasas_slave_alloc,
3003 .slave_destroy = megasas_slave_destroy,
3004 .queuecommand = megasas_queue_command,
3005 .eh_target_reset_handler = megasas_reset_target,
3006 .eh_abort_handler = megasas_task_abort,
3007 .eh_host_reset_handler = megasas_reset_bus_host,
3008 .eh_timed_out = megasas_reset_timer,
3009 .shost_attrs = megaraid_host_attrs,
3010 .bios_param = megasas_bios_param,
3011 .use_clustering = ENABLE_CLUSTERING,
3012 .change_queue_depth = scsi_change_queue_depth,
3013 .no_write_same = 1,
3014 };
3015
3016 /**
3017 * megasas_complete_int_cmd - Completes an internal command
3018 * @instance: Adapter soft state
3019 * @cmd: Command to be completed
3020 *
3021 * The megasas_issue_blocked_cmd() function waits for a command to complete
3022 * after it issues a command. This function wakes up that waiting routine by
3023 * calling wake_up() on the wait queue.
3024 */
3025 static void
3026 megasas_complete_int_cmd(struct megasas_instance *instance,
3027 struct megasas_cmd *cmd)
3028 {
3029 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3030 wake_up(&instance->int_cmd_wait_q);
3031 }
3032
3033 /**
3034 * megasas_complete_abort - Completes aborting a command
3035 * @instance: Adapter soft state
3036 * @cmd: Cmd that was issued to abort another cmd
3037 *
3038 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3039 * after it issues an abort on a previously issued command. This function
3040 * wakes up all functions waiting on the same wait queue.
3041 */
3042 static void
3043 megasas_complete_abort(struct megasas_instance *instance,
3044 struct megasas_cmd *cmd)
3045 {
3046 if (cmd->sync_cmd) {
3047 cmd->sync_cmd = 0;
3048 cmd->cmd_status_drv = 0;
3049 wake_up(&instance->abort_cmd_wait_q);
3050 }
3051 }
3052
3053 /**
3054 * megasas_complete_cmd - Completes a command
3055 * @instance: Adapter soft state
3056 * @cmd: Command to be completed
3057 * @alt_status: If non-zero, use this value as status to
3058 * SCSI mid-layer instead of the value returned
3059 * by the FW. This should be used if caller wants
3060 * an alternate status (as in the case of aborted
3061 * commands)
3062 */
3063 void
3064 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3065 u8 alt_status)
3066 {
3067 int exception = 0;
3068 struct megasas_header *hdr = &cmd->frame->hdr;
3069 unsigned long flags;
3070 struct fusion_context *fusion = instance->ctrl_context;
3071 u32 opcode, status;
3072
3073 /* flag for the retry reset */
3074 cmd->retry_for_fw_reset = 0;
3075
3076 if (cmd->scmd)
3077 cmd->scmd->SCp.ptr = NULL;
3078
3079 switch (hdr->cmd) {
3080 case MFI_CMD_INVALID:
3081 /* Some older 1068 controller FW may keep a pended
3082 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3083 when booting the kdump kernel. Ignore this command to
3084 prevent a kernel panic on shutdown of the kdump kernel. */
3085 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3086 "completed\n");
3087 dev_warn(&instance->pdev->dev, "If you have a controller "
3088 "other than PERC5, please upgrade your firmware\n");
3089 break;
3090 case MFI_CMD_PD_SCSI_IO:
3091 case MFI_CMD_LD_SCSI_IO:
3092
3093 /*
3094 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3095 * issued either through an IO path or an IOCTL path. If it
3096 * was via IOCTL, we will send it to internal completion.
3097 */
3098 if (cmd->sync_cmd) {
3099 cmd->sync_cmd = 0;
3100 megasas_complete_int_cmd(instance, cmd);
3101 break;
3102 }
3103
3104 case MFI_CMD_LD_READ:
3105 case MFI_CMD_LD_WRITE:
3106
3107 if (alt_status) {
3108 cmd->scmd->result = alt_status << 16;
3109 exception = 1;
3110 }
3111
3112 if (exception) {
3113
3114 atomic_dec(&instance->fw_outstanding);
3115
3116 scsi_dma_unmap(cmd->scmd);
3117 cmd->scmd->scsi_done(cmd->scmd);
3118 megasas_return_cmd(instance, cmd);
3119
3120 break;
3121 }
3122
3123 switch (hdr->cmd_status) {
3124
3125 case MFI_STAT_OK:
3126 cmd->scmd->result = DID_OK << 16;
3127 break;
3128
3129 case MFI_STAT_SCSI_IO_FAILED:
3130 case MFI_STAT_LD_INIT_IN_PROGRESS:
3131 cmd->scmd->result =
3132 (DID_ERROR << 16) | hdr->scsi_status;
3133 break;
3134
3135 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3136
3137 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3138
3139 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3140 memset(cmd->scmd->sense_buffer, 0,
3141 SCSI_SENSE_BUFFERSIZE);
3142 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3143 hdr->sense_len);
3144
3145 cmd->scmd->result |= DRIVER_SENSE << 24;
3146 }
3147
3148 break;
3149
3150 case MFI_STAT_LD_OFFLINE:
3151 case MFI_STAT_DEVICE_NOT_FOUND:
3152 cmd->scmd->result = DID_BAD_TARGET << 16;
3153 break;
3154
3155 default:
3156 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3157 hdr->cmd_status);
3158 cmd->scmd->result = DID_ERROR << 16;
3159 break;
3160 }
3161
3162 atomic_dec(&instance->fw_outstanding);
3163
3164 scsi_dma_unmap(cmd->scmd);
3165 cmd->scmd->scsi_done(cmd->scmd);
3166 megasas_return_cmd(instance, cmd);
3167
3168 break;
3169
3170 case MFI_CMD_SMP:
3171 case MFI_CMD_STP:
3172 case MFI_CMD_DCMD:
3173 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3174 /* Check for LD map update */
3175 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3176 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3177 fusion->fast_path_io = 0;
3178 spin_lock_irqsave(instance->host->host_lock, flags);
3179 instance->map_update_cmd = NULL;
3180 if (cmd->frame->hdr.cmd_status != 0) {
3181 if (cmd->frame->hdr.cmd_status !=
3182 MFI_STAT_NOT_FOUND)
3183 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3184 cmd->frame->hdr.cmd_status);
3185 else {
3186 megasas_return_cmd(instance, cmd);
3187 spin_unlock_irqrestore(
3188 instance->host->host_lock,
3189 flags);
3190 break;
3191 }
3192 } else
3193 instance->map_id++;
3194 megasas_return_cmd(instance, cmd);
3195
3196 /*
3197 * Set fast path IO to ZERO.
3198 * Validate Map will set proper value.
3199 * Meanwhile all IOs will go as LD IO.
3200 */
3201 if (MR_ValidateMapInfo(instance))
3202 fusion->fast_path_io = 1;
3203 else
3204 fusion->fast_path_io = 0;
3205 megasas_sync_map_info(instance);
3206 spin_unlock_irqrestore(instance->host->host_lock,
3207 flags);
3208 break;
3209 }
3210 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3211 opcode == MR_DCMD_CTRL_EVENT_GET) {
3212 spin_lock_irqsave(&poll_aen_lock, flags);
3213 megasas_poll_wait_aen = 0;
3214 spin_unlock_irqrestore(&poll_aen_lock, flags);
3215 }
3216
3217 /* FW has an updated PD sequence */
3218 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3219 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3220
3221 spin_lock_irqsave(instance->host->host_lock, flags);
3222 status = cmd->frame->hdr.cmd_status;
3223 instance->jbod_seq_cmd = NULL;
3224 megasas_return_cmd(instance, cmd);
3225
3226 if (status == MFI_STAT_OK) {
3227 instance->pd_seq_map_id++;
3228 /* Re-register a pd sync seq num cmd */
3229 if (megasas_sync_pd_seq_num(instance, true))
3230 instance->use_seqnum_jbod_fp = false;
3231 } else
3232 instance->use_seqnum_jbod_fp = false;
3233
3234 spin_unlock_irqrestore(instance->host->host_lock, flags);
3235 break;
3236 }
3237
3238 /*
3239 * See if got an event notification
3240 */
3241 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3242 megasas_service_aen(instance, cmd);
3243 else
3244 megasas_complete_int_cmd(instance, cmd);
3245
3246 break;
3247
3248 case MFI_CMD_ABORT:
3249 /*
3250 * Cmd issued to abort another cmd returned
3251 */
3252 megasas_complete_abort(instance, cmd);
3253 break;
3254
3255 default:
3256 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3257 hdr->cmd);
3258 break;
3259 }
3260 }
3261
3262 /**
3263 * megasas_issue_pending_cmds_again - issue all pending cmds
3264 * in FW again because of the fw reset
3265 * @instance: Adapter soft state
3266 */
3267 static inline void
3268 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3269 {
3270 struct megasas_cmd *cmd;
3271 struct list_head clist_local;
3272 union megasas_evt_class_locale class_locale;
3273 unsigned long flags;
3274 u32 seq_num;
3275
3276 INIT_LIST_HEAD(&clist_local);
3277 spin_lock_irqsave(&instance->hba_lock, flags);
3278 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3279 spin_unlock_irqrestore(&instance->hba_lock, flags);
3280
3281 while (!list_empty(&clist_local)) {
3282 cmd = list_entry((&clist_local)->next,
3283 struct megasas_cmd, list);
3284 list_del_init(&cmd->list);
3285
3286 if (cmd->sync_cmd || cmd->scmd) {
3287 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3288 "detected to be pending while HBA reset\n",
3289 cmd, cmd->scmd, cmd->sync_cmd);
3290
3291 cmd->retry_for_fw_reset++;
3292
3293 if (cmd->retry_for_fw_reset == 3) {
3294 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3295 "was tried multiple times during reset."
3296 "Shutting down the HBA\n",
3297 cmd, cmd->scmd, cmd->sync_cmd);
3298 instance->instancet->disable_intr(instance);
3299 atomic_set(&instance->fw_reset_no_pci_access, 1);
3300 megaraid_sas_kill_hba(instance);
3301 return;
3302 }
3303 }
3304
3305 if (cmd->sync_cmd == 1) {
3306 if (cmd->scmd) {
3307 dev_notice(&instance->pdev->dev, "unexpected"
3308 "cmd attached to internal command!\n");
3309 }
3310 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3311 "on the internal reset queue,"
3312 "issue it again.\n", cmd);
3313 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3314 instance->instancet->fire_cmd(instance,
3315 cmd->frame_phys_addr,
3316 0, instance->reg_set);
3317 } else if (cmd->scmd) {
3318 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3319 "detected on the internal queue, issue again.\n",
3320 cmd, cmd->scmd->cmnd[0]);
3321
3322 atomic_inc(&instance->fw_outstanding);
3323 instance->instancet->fire_cmd(instance,
3324 cmd->frame_phys_addr,
3325 cmd->frame_count-1, instance->reg_set);
3326 } else {
3327 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3328 "internal reset defer list while re-issue!!\n",
3329 cmd);
3330 }
3331 }
3332
3333 if (instance->aen_cmd) {
3334 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3335 megasas_return_cmd(instance, instance->aen_cmd);
3336
3337 instance->aen_cmd = NULL;
3338 }
3339
3340 /*
3341 * Initiate AEN (Asynchronous Event Notification)
3342 */
3343 seq_num = instance->last_seq_num;
3344 class_locale.members.reserved = 0;
3345 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3346 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3347
3348 megasas_register_aen(instance, seq_num, class_locale.word);
3349 }
3350
3351 /**
3352 * Move the internal reset pending commands to a deferred queue.
3353 *
3354 * We move the commands pending at internal reset time to a
3355 * pending queue. This queue would be flushed after successful
3356 * completion of the internal reset sequence. if the internal reset
3357 * did not complete in time, the kernel reset handler would flush
3358 * these commands.
3359 **/
3360 static void
3361 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3362 {
3363 struct megasas_cmd *cmd;
3364 int i;
3365 u32 max_cmd = instance->max_fw_cmds;
3366 u32 defer_index;
3367 unsigned long flags;
3368
3369 defer_index = 0;
3370 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3371 for (i = 0; i < max_cmd; i++) {
3372 cmd = instance->cmd_list[i];
3373 if (cmd->sync_cmd == 1 || cmd->scmd) {
3374 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3375 "on the defer queue as internal\n",
3376 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3377
3378 if (!list_empty(&cmd->list)) {
3379 dev_notice(&instance->pdev->dev, "ERROR while"
3380 " moving this cmd:%p, %d %p, it was"
3381 "discovered on some list?\n",
3382 cmd, cmd->sync_cmd, cmd->scmd);
3383
3384 list_del_init(&cmd->list);
3385 }
3386 defer_index++;
3387 list_add_tail(&cmd->list,
3388 &instance->internal_reset_pending_q);
3389 }
3390 }
3391 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3392 }
3393
3394
3395 static void
3396 process_fw_state_change_wq(struct work_struct *work)
3397 {
3398 struct megasas_instance *instance =
3399 container_of(work, struct megasas_instance, work_init);
3400 u32 wait;
3401 unsigned long flags;
3402
3403 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3404 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3405 atomic_read(&instance->adprecovery));
3406 return ;
3407 }
3408
3409 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3410 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3411 "state, restarting it...\n");
3412
3413 instance->instancet->disable_intr(instance);
3414 atomic_set(&instance->fw_outstanding, 0);
3415
3416 atomic_set(&instance->fw_reset_no_pci_access, 1);
3417 instance->instancet->adp_reset(instance, instance->reg_set);
3418 atomic_set(&instance->fw_reset_no_pci_access, 0);
3419
3420 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3421 "initiating next stage...\n");
3422
3423 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3424 "state 2 starting...\n");
3425
3426 /* waiting for about 20 second before start the second init */
3427 for (wait = 0; wait < 30; wait++) {
3428 msleep(1000);
3429 }
3430
3431 if (megasas_transition_to_ready(instance, 1)) {
3432 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3433
3434 atomic_set(&instance->fw_reset_no_pci_access, 1);
3435 megaraid_sas_kill_hba(instance);
3436 return ;
3437 }
3438
3439 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3440 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3441 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3442 ) {
3443 *instance->consumer = *instance->producer;
3444 } else {
3445 *instance->consumer = 0;
3446 *instance->producer = 0;
3447 }
3448
3449 megasas_issue_init_mfi(instance);
3450
3451 spin_lock_irqsave(&instance->hba_lock, flags);
3452 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3453 spin_unlock_irqrestore(&instance->hba_lock, flags);
3454 instance->instancet->enable_intr(instance);
3455
3456 megasas_issue_pending_cmds_again(instance);
3457 instance->issuepend_done = 1;
3458 }
3459 }
3460
3461 /**
3462 * megasas_deplete_reply_queue - Processes all completed commands
3463 * @instance: Adapter soft state
3464 * @alt_status: Alternate status to be returned to
3465 * SCSI mid-layer instead of the status
3466 * returned by the FW
3467 * Note: this must be called with hba lock held
3468 */
3469 static int
3470 megasas_deplete_reply_queue(struct megasas_instance *instance,
3471 u8 alt_status)
3472 {
3473 u32 mfiStatus;
3474 u32 fw_state;
3475
3476 if ((mfiStatus = instance->instancet->check_reset(instance,
3477 instance->reg_set)) == 1) {
3478 return IRQ_HANDLED;
3479 }
3480
3481 if ((mfiStatus = instance->instancet->clear_intr(
3482 instance->reg_set)
3483 ) == 0) {
3484 /* Hardware may not set outbound_intr_status in MSI-X mode */
3485 if (!instance->msix_vectors)
3486 return IRQ_NONE;
3487 }
3488
3489 instance->mfiStatus = mfiStatus;
3490
3491 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3492 fw_state = instance->instancet->read_fw_status_reg(
3493 instance->reg_set) & MFI_STATE_MASK;
3494
3495 if (fw_state != MFI_STATE_FAULT) {
3496 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3497 fw_state);
3498 }
3499
3500 if ((fw_state == MFI_STATE_FAULT) &&
3501 (instance->disableOnlineCtrlReset == 0)) {
3502 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3503
3504 if ((instance->pdev->device ==
3505 PCI_DEVICE_ID_LSI_SAS1064R) ||
3506 (instance->pdev->device ==
3507 PCI_DEVICE_ID_DELL_PERC5) ||
3508 (instance->pdev->device ==
3509 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3510
3511 *instance->consumer =
3512 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3513 }
3514
3515
3516 instance->instancet->disable_intr(instance);
3517 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3518 instance->issuepend_done = 0;
3519
3520 atomic_set(&instance->fw_outstanding, 0);
3521 megasas_internal_reset_defer_cmds(instance);
3522
3523 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3524 fw_state, atomic_read(&instance->adprecovery));
3525
3526 schedule_work(&instance->work_init);
3527 return IRQ_HANDLED;
3528
3529 } else {
3530 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3531 fw_state, instance->disableOnlineCtrlReset);
3532 }
3533 }
3534
3535 tasklet_schedule(&instance->isr_tasklet);
3536 return IRQ_HANDLED;
3537 }
3538 /**
3539 * megasas_isr - isr entry point
3540 */
3541 static irqreturn_t megasas_isr(int irq, void *devp)
3542 {
3543 struct megasas_irq_context *irq_context = devp;
3544 struct megasas_instance *instance = irq_context->instance;
3545 unsigned long flags;
3546 irqreturn_t rc;
3547
3548 if (atomic_read(&instance->fw_reset_no_pci_access))
3549 return IRQ_HANDLED;
3550
3551 spin_lock_irqsave(&instance->hba_lock, flags);
3552 rc = megasas_deplete_reply_queue(instance, DID_OK);
3553 spin_unlock_irqrestore(&instance->hba_lock, flags);
3554
3555 return rc;
3556 }
3557
3558 /**
3559 * megasas_transition_to_ready - Move the FW to READY state
3560 * @instance: Adapter soft state
3561 *
3562 * During the initialization, FW passes can potentially be in any one of
3563 * several possible states. If the FW in operational, waiting-for-handshake
3564 * states, driver must take steps to bring it to ready state. Otherwise, it
3565 * has to wait for the ready state.
3566 */
3567 int
3568 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3569 {
3570 int i;
3571 u8 max_wait;
3572 u32 fw_state;
3573 u32 cur_state;
3574 u32 abs_state, curr_abs_state;
3575
3576 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3577 fw_state = abs_state & MFI_STATE_MASK;
3578
3579 if (fw_state != MFI_STATE_READY)
3580 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3581 " state\n");
3582
3583 while (fw_state != MFI_STATE_READY) {
3584
3585 switch (fw_state) {
3586
3587 case MFI_STATE_FAULT:
3588 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3589 if (ocr) {
3590 max_wait = MEGASAS_RESET_WAIT_TIME;
3591 cur_state = MFI_STATE_FAULT;
3592 break;
3593 } else
3594 return -ENODEV;
3595
3596 case MFI_STATE_WAIT_HANDSHAKE:
3597 /*
3598 * Set the CLR bit in inbound doorbell
3599 */
3600 if ((instance->pdev->device ==
3601 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3602 (instance->pdev->device ==
3603 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3604 (instance->ctrl_context))
3605 writel(
3606 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3607 &instance->reg_set->doorbell);
3608 else
3609 writel(
3610 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3611 &instance->reg_set->inbound_doorbell);
3612
3613 max_wait = MEGASAS_RESET_WAIT_TIME;
3614 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3615 break;
3616
3617 case MFI_STATE_BOOT_MESSAGE_PENDING:
3618 if ((instance->pdev->device ==
3619 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3620 (instance->pdev->device ==
3621 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3622 (instance->ctrl_context))
3623 writel(MFI_INIT_HOTPLUG,
3624 &instance->reg_set->doorbell);
3625 else
3626 writel(MFI_INIT_HOTPLUG,
3627 &instance->reg_set->inbound_doorbell);
3628
3629 max_wait = MEGASAS_RESET_WAIT_TIME;
3630 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3631 break;
3632
3633 case MFI_STATE_OPERATIONAL:
3634 /*
3635 * Bring it to READY state; assuming max wait 10 secs
3636 */
3637 instance->instancet->disable_intr(instance);
3638 if ((instance->pdev->device ==
3639 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3640 (instance->pdev->device ==
3641 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3642 (instance->ctrl_context)) {
3643 writel(MFI_RESET_FLAGS,
3644 &instance->reg_set->doorbell);
3645
3646 if (instance->ctrl_context) {
3647 for (i = 0; i < (10 * 1000); i += 20) {
3648 if (readl(
3649 &instance->
3650 reg_set->
3651 doorbell) & 1)
3652 msleep(20);
3653 else
3654 break;
3655 }
3656 }
3657 } else
3658 writel(MFI_RESET_FLAGS,
3659 &instance->reg_set->inbound_doorbell);
3660
3661 max_wait = MEGASAS_RESET_WAIT_TIME;
3662 cur_state = MFI_STATE_OPERATIONAL;
3663 break;
3664
3665 case MFI_STATE_UNDEFINED:
3666 /*
3667 * This state should not last for more than 2 seconds
3668 */
3669 max_wait = MEGASAS_RESET_WAIT_TIME;
3670 cur_state = MFI_STATE_UNDEFINED;
3671 break;
3672
3673 case MFI_STATE_BB_INIT:
3674 max_wait = MEGASAS_RESET_WAIT_TIME;
3675 cur_state = MFI_STATE_BB_INIT;
3676 break;
3677
3678 case MFI_STATE_FW_INIT:
3679 max_wait = MEGASAS_RESET_WAIT_TIME;
3680 cur_state = MFI_STATE_FW_INIT;
3681 break;
3682
3683 case MFI_STATE_FW_INIT_2:
3684 max_wait = MEGASAS_RESET_WAIT_TIME;
3685 cur_state = MFI_STATE_FW_INIT_2;
3686 break;
3687
3688 case MFI_STATE_DEVICE_SCAN:
3689 max_wait = MEGASAS_RESET_WAIT_TIME;
3690 cur_state = MFI_STATE_DEVICE_SCAN;
3691 break;
3692
3693 case MFI_STATE_FLUSH_CACHE:
3694 max_wait = MEGASAS_RESET_WAIT_TIME;
3695 cur_state = MFI_STATE_FLUSH_CACHE;
3696 break;
3697
3698 default:
3699 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3700 fw_state);
3701 return -ENODEV;
3702 }
3703
3704 /*
3705 * The cur_state should not last for more than max_wait secs
3706 */
3707 for (i = 0; i < (max_wait * 1000); i++) {
3708 curr_abs_state = instance->instancet->
3709 read_fw_status_reg(instance->reg_set);
3710
3711 if (abs_state == curr_abs_state) {
3712 msleep(1);
3713 } else
3714 break;
3715 }
3716
3717 /*
3718 * Return error if fw_state hasn't changed after max_wait
3719 */
3720 if (curr_abs_state == abs_state) {
3721 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3722 "in %d secs\n", fw_state, max_wait);
3723 return -ENODEV;
3724 }
3725
3726 abs_state = curr_abs_state;
3727 fw_state = curr_abs_state & MFI_STATE_MASK;
3728 }
3729 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3730
3731 return 0;
3732 }
3733
3734 /**
3735 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3736 * @instance: Adapter soft state
3737 */
3738 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3739 {
3740 int i;
3741 u32 max_cmd = instance->max_mfi_cmds;
3742 struct megasas_cmd *cmd;
3743
3744 if (!instance->frame_dma_pool)
3745 return;
3746
3747 /*
3748 * Return all frames to pool
3749 */
3750 for (i = 0; i < max_cmd; i++) {
3751
3752 cmd = instance->cmd_list[i];
3753
3754 if (cmd->frame)
3755 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3756 cmd->frame_phys_addr);
3757
3758 if (cmd->sense)
3759 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3760 cmd->sense_phys_addr);
3761 }
3762
3763 /*
3764 * Now destroy the pool itself
3765 */
3766 pci_pool_destroy(instance->frame_dma_pool);
3767 pci_pool_destroy(instance->sense_dma_pool);
3768
3769 instance->frame_dma_pool = NULL;
3770 instance->sense_dma_pool = NULL;
3771 }
3772
3773 /**
3774 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3775 * @instance: Adapter soft state
3776 *
3777 * Each command packet has an embedded DMA memory buffer that is used for
3778 * filling MFI frame and the SG list that immediately follows the frame. This
3779 * function creates those DMA memory buffers for each command packet by using
3780 * PCI pool facility.
3781 */
3782 static int megasas_create_frame_pool(struct megasas_instance *instance)
3783 {
3784 int i;
3785 u32 max_cmd;
3786 u32 sge_sz;
3787 u32 total_sz;
3788 u32 frame_count;
3789 struct megasas_cmd *cmd;
3790
3791 max_cmd = instance->max_mfi_cmds;
3792
3793 /*
3794 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3795 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3796 */
3797 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3798 sizeof(struct megasas_sge32);
3799
3800 if (instance->flag_ieee)
3801 sge_sz = sizeof(struct megasas_sge_skinny);
3802
3803 /*
3804 * For MFI controllers.
3805 * max_num_sge = 60
3806 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3807 * Total 960 byte (15 MFI frame of 64 byte)
3808 *
3809 * Fusion adapter require only 3 extra frame.
3810 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3811 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3812 * Total 192 byte (3 MFI frame of 64 byte)
3813 */
3814 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3815 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3816 /*
3817 * Use DMA pool facility provided by PCI layer
3818 */
3819 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3820 instance->pdev, total_sz, 256, 0);
3821
3822 if (!instance->frame_dma_pool) {
3823 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3824 return -ENOMEM;
3825 }
3826
3827 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3828 instance->pdev, 128, 4, 0);
3829
3830 if (!instance->sense_dma_pool) {
3831 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3832
3833 pci_pool_destroy(instance->frame_dma_pool);
3834 instance->frame_dma_pool = NULL;
3835
3836 return -ENOMEM;
3837 }
3838
3839 /*
3840 * Allocate and attach a frame to each of the commands in cmd_list.
3841 * By making cmd->index as the context instead of the &cmd, we can
3842 * always use 32bit context regardless of the architecture
3843 */
3844 for (i = 0; i < max_cmd; i++) {
3845
3846 cmd = instance->cmd_list[i];
3847
3848 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3849 GFP_KERNEL, &cmd->frame_phys_addr);
3850
3851 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3852 GFP_KERNEL, &cmd->sense_phys_addr);
3853
3854 /*
3855 * megasas_teardown_frame_pool() takes care of freeing
3856 * whatever has been allocated
3857 */
3858 if (!cmd->frame || !cmd->sense) {
3859 dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3860 megasas_teardown_frame_pool(instance);
3861 return -ENOMEM;
3862 }
3863
3864 memset(cmd->frame, 0, total_sz);
3865 cmd->frame->io.context = cpu_to_le32(cmd->index);
3866 cmd->frame->io.pad_0 = 0;
3867 if (!instance->ctrl_context && reset_devices)
3868 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3869 }
3870
3871 return 0;
3872 }
3873
3874 /**
3875 * megasas_free_cmds - Free all the cmds in the free cmd pool
3876 * @instance: Adapter soft state
3877 */
3878 void megasas_free_cmds(struct megasas_instance *instance)
3879 {
3880 int i;
3881
3882 /* First free the MFI frame pool */
3883 megasas_teardown_frame_pool(instance);
3884
3885 /* Free all the commands in the cmd_list */
3886 for (i = 0; i < instance->max_mfi_cmds; i++)
3887
3888 kfree(instance->cmd_list[i]);
3889
3890 /* Free the cmd_list buffer itself */
3891 kfree(instance->cmd_list);
3892 instance->cmd_list = NULL;
3893
3894 INIT_LIST_HEAD(&instance->cmd_pool);
3895 }
3896
3897 /**
3898 * megasas_alloc_cmds - Allocates the command packets
3899 * @instance: Adapter soft state
3900 *
3901 * Each command that is issued to the FW, whether IO commands from the OS or
3902 * internal commands like IOCTLs, are wrapped in local data structure called
3903 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3904 * the FW.
3905 *
3906 * Each frame has a 32-bit field called context (tag). This context is used
3907 * to get back the megasas_cmd from the frame when a frame gets completed in
3908 * the ISR. Typically the address of the megasas_cmd itself would be used as
3909 * the context. But we wanted to keep the differences between 32 and 64 bit
3910 * systems to the mininum. We always use 32 bit integers for the context. In
3911 * this driver, the 32 bit values are the indices into an array cmd_list.
3912 * This array is used only to look up the megasas_cmd given the context. The
3913 * free commands themselves are maintained in a linked list called cmd_pool.
3914 */
3915 int megasas_alloc_cmds(struct megasas_instance *instance)
3916 {
3917 int i;
3918 int j;
3919 u32 max_cmd;
3920 struct megasas_cmd *cmd;
3921 struct fusion_context *fusion;
3922
3923 fusion = instance->ctrl_context;
3924 max_cmd = instance->max_mfi_cmds;
3925
3926 /*
3927 * instance->cmd_list is an array of struct megasas_cmd pointers.
3928 * Allocate the dynamic array first and then allocate individual
3929 * commands.
3930 */
3931 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3932
3933 if (!instance->cmd_list) {
3934 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3935 return -ENOMEM;
3936 }
3937
3938 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3939
3940 for (i = 0; i < max_cmd; i++) {
3941 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3942 GFP_KERNEL);
3943
3944 if (!instance->cmd_list[i]) {
3945
3946 for (j = 0; j < i; j++)
3947 kfree(instance->cmd_list[j]);
3948
3949 kfree(instance->cmd_list);
3950 instance->cmd_list = NULL;
3951
3952 return -ENOMEM;
3953 }
3954 }
3955
3956 for (i = 0; i < max_cmd; i++) {
3957 cmd = instance->cmd_list[i];
3958 memset(cmd, 0, sizeof(struct megasas_cmd));
3959 cmd->index = i;
3960 cmd->scmd = NULL;
3961 cmd->instance = instance;
3962
3963 list_add_tail(&cmd->list, &instance->cmd_pool);
3964 }
3965
3966 /*
3967 * Create a frame pool and assign one frame to each cmd
3968 */
3969 if (megasas_create_frame_pool(instance)) {
3970 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3971 megasas_free_cmds(instance);
3972 }
3973
3974 return 0;
3975 }
3976
3977 /*
3978 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
3979 * @instance: Adapter soft state
3980 *
3981 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
3982 * or FW is not under OCR.
3983 */
3984 inline int
3985 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
3986
3987 if (!instance->ctrl_context)
3988 return KILL_ADAPTER;
3989 else if (instance->unload ||
3990 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
3991 return IGNORE_TIMEOUT;
3992 else
3993 return INITIATE_OCR;
3994 }
3995
3996 static int
3997 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id)
3998 {
3999 int ret;
4000 struct megasas_cmd *cmd;
4001 struct megasas_dcmd_frame *dcmd;
4002
4003 cmd = megasas_get_cmd(instance);
4004
4005 if (!cmd) {
4006 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4007 return -ENOMEM;
4008 }
4009
4010 dcmd = &cmd->frame->dcmd;
4011
4012 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4013 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4014
4015 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4016 dcmd->cmd = MFI_CMD_DCMD;
4017 dcmd->cmd_status = 0xFF;
4018 dcmd->sge_count = 1;
4019 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4020 dcmd->timeout = 0;
4021 dcmd->pad_0 = 0;
4022 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4023 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4024 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
4025 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
4026
4027 if (instance->ctrl_context && !instance->mask_interrupts)
4028 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4029 else
4030 ret = megasas_issue_polled(instance, cmd);
4031
4032 switch (ret) {
4033 case DCMD_SUCCESS:
4034 instance->pd_list[device_id].interface =
4035 instance->pd_info->state.ddf.pdType.intf;
4036 break;
4037
4038 case DCMD_TIMEOUT:
4039
4040 switch (dcmd_timeout_ocr_possible(instance)) {
4041 case INITIATE_OCR:
4042 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4043 megasas_reset_fusion(instance->host,
4044 MFI_IO_TIMEOUT_OCR);
4045 break;
4046 case KILL_ADAPTER:
4047 megaraid_sas_kill_hba(instance);
4048 break;
4049 case IGNORE_TIMEOUT:
4050 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4051 __func__, __LINE__);
4052 break;
4053 }
4054
4055 break;
4056 }
4057
4058 if (ret != DCMD_TIMEOUT)
4059 megasas_return_cmd(instance, cmd);
4060
4061 return ret;
4062 }
4063 /*
4064 * megasas_get_pd_list_info - Returns FW's pd_list structure
4065 * @instance: Adapter soft state
4066 * @pd_list: pd_list structure
4067 *
4068 * Issues an internal command (DCMD) to get the FW's controller PD
4069 * list structure. This information is mainly used to find out SYSTEM
4070 * supported by the FW.
4071 */
4072 static int
4073 megasas_get_pd_list(struct megasas_instance *instance)
4074 {
4075 int ret = 0, pd_index = 0;
4076 struct megasas_cmd *cmd;
4077 struct megasas_dcmd_frame *dcmd;
4078 struct MR_PD_LIST *ci;
4079 struct MR_PD_ADDRESS *pd_addr;
4080 dma_addr_t ci_h = 0;
4081
4082 if (instance->pd_list_not_supported) {
4083 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4084 "not supported by firmware\n");
4085 return ret;
4086 }
4087
4088 cmd = megasas_get_cmd(instance);
4089
4090 if (!cmd) {
4091 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4092 return -ENOMEM;
4093 }
4094
4095 dcmd = &cmd->frame->dcmd;
4096
4097 ci = pci_alloc_consistent(instance->pdev,
4098 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
4099
4100 if (!ci) {
4101 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4102 megasas_return_cmd(instance, cmd);
4103 return -ENOMEM;
4104 }
4105
4106 memset(ci, 0, sizeof(*ci));
4107 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4108
4109 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4110 dcmd->mbox.b[1] = 0;
4111 dcmd->cmd = MFI_CMD_DCMD;
4112 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4113 dcmd->sge_count = 1;
4114 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4115 dcmd->timeout = 0;
4116 dcmd->pad_0 = 0;
4117 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4118 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4119 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4120 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4121
4122 if (instance->ctrl_context && !instance->mask_interrupts)
4123 ret = megasas_issue_blocked_cmd(instance, cmd,
4124 MFI_IO_TIMEOUT_SECS);
4125 else
4126 ret = megasas_issue_polled(instance, cmd);
4127
4128 switch (ret) {
4129 case DCMD_FAILED:
4130 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4131 "failed/not supported by firmware\n");
4132
4133 if (instance->ctrl_context)
4134 megaraid_sas_kill_hba(instance);
4135 else
4136 instance->pd_list_not_supported = 1;
4137 break;
4138 case DCMD_TIMEOUT:
4139
4140 switch (dcmd_timeout_ocr_possible(instance)) {
4141 case INITIATE_OCR:
4142 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4143 /*
4144 * DCMD failed from AEN path.
4145 * AEN path already hold reset_mutex to avoid PCI access
4146 * while OCR is in progress.
4147 */
4148 mutex_unlock(&instance->reset_mutex);
4149 megasas_reset_fusion(instance->host,
4150 MFI_IO_TIMEOUT_OCR);
4151 mutex_lock(&instance->reset_mutex);
4152 break;
4153 case KILL_ADAPTER:
4154 megaraid_sas_kill_hba(instance);
4155 break;
4156 case IGNORE_TIMEOUT:
4157 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4158 __func__, __LINE__);
4159 break;
4160 }
4161
4162 break;
4163
4164 case DCMD_SUCCESS:
4165 pd_addr = ci->addr;
4166
4167 if ((le32_to_cpu(ci->count) >
4168 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4169 break;
4170
4171 memset(instance->local_pd_list, 0,
4172 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4173
4174 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4175 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4176 le16_to_cpu(pd_addr->deviceId);
4177 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4178 pd_addr->scsiDevType;
4179 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4180 MR_PD_STATE_SYSTEM;
4181 pd_addr++;
4182 }
4183
4184 memcpy(instance->pd_list, instance->local_pd_list,
4185 sizeof(instance->pd_list));
4186 break;
4187
4188 }
4189
4190 pci_free_consistent(instance->pdev,
4191 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
4192 ci, ci_h);
4193
4194 if (ret != DCMD_TIMEOUT)
4195 megasas_return_cmd(instance, cmd);
4196
4197 return ret;
4198 }
4199
4200 /*
4201 * megasas_get_ld_list_info - Returns FW's ld_list structure
4202 * @instance: Adapter soft state
4203 * @ld_list: ld_list structure
4204 *
4205 * Issues an internal command (DCMD) to get the FW's controller PD
4206 * list structure. This information is mainly used to find out SYSTEM
4207 * supported by the FW.
4208 */
4209 static int
4210 megasas_get_ld_list(struct megasas_instance *instance)
4211 {
4212 int ret = 0, ld_index = 0, ids = 0;
4213 struct megasas_cmd *cmd;
4214 struct megasas_dcmd_frame *dcmd;
4215 struct MR_LD_LIST *ci;
4216 dma_addr_t ci_h = 0;
4217 u32 ld_count;
4218
4219 cmd = megasas_get_cmd(instance);
4220
4221 if (!cmd) {
4222 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4223 return -ENOMEM;
4224 }
4225
4226 dcmd = &cmd->frame->dcmd;
4227
4228 ci = pci_alloc_consistent(instance->pdev,
4229 sizeof(struct MR_LD_LIST),
4230 &ci_h);
4231
4232 if (!ci) {
4233 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4234 megasas_return_cmd(instance, cmd);
4235 return -ENOMEM;
4236 }
4237
4238 memset(ci, 0, sizeof(*ci));
4239 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4240
4241 if (instance->supportmax256vd)
4242 dcmd->mbox.b[0] = 1;
4243 dcmd->cmd = MFI_CMD_DCMD;
4244 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4245 dcmd->sge_count = 1;
4246 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4247 dcmd->timeout = 0;
4248 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4249 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4250 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4251 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4252 dcmd->pad_0 = 0;
4253
4254 if (instance->ctrl_context && !instance->mask_interrupts)
4255 ret = megasas_issue_blocked_cmd(instance, cmd,
4256 MFI_IO_TIMEOUT_SECS);
4257 else
4258 ret = megasas_issue_polled(instance, cmd);
4259
4260 ld_count = le32_to_cpu(ci->ldCount);
4261
4262 switch (ret) {
4263 case DCMD_FAILED:
4264 megaraid_sas_kill_hba(instance);
4265 break;
4266 case DCMD_TIMEOUT:
4267
4268 switch (dcmd_timeout_ocr_possible(instance)) {
4269 case INITIATE_OCR:
4270 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4271 /*
4272 * DCMD failed from AEN path.
4273 * AEN path already hold reset_mutex to avoid PCI access
4274 * while OCR is in progress.
4275 */
4276 mutex_unlock(&instance->reset_mutex);
4277 megasas_reset_fusion(instance->host,
4278 MFI_IO_TIMEOUT_OCR);
4279 mutex_lock(&instance->reset_mutex);
4280 break;
4281 case KILL_ADAPTER:
4282 megaraid_sas_kill_hba(instance);
4283 break;
4284 case IGNORE_TIMEOUT:
4285 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4286 __func__, __LINE__);
4287 break;
4288 }
4289
4290 break;
4291
4292 case DCMD_SUCCESS:
4293 if (ld_count > instance->fw_supported_vd_count)
4294 break;
4295
4296 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4297
4298 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4299 if (ci->ldList[ld_index].state != 0) {
4300 ids = ci->ldList[ld_index].ref.targetId;
4301 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4302 }
4303 }
4304
4305 break;
4306 }
4307
4308 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);
4309
4310 if (ret != DCMD_TIMEOUT)
4311 megasas_return_cmd(instance, cmd);
4312
4313 return ret;
4314 }
4315
4316 /**
4317 * megasas_ld_list_query - Returns FW's ld_list structure
4318 * @instance: Adapter soft state
4319 * @ld_list: ld_list structure
4320 *
4321 * Issues an internal command (DCMD) to get the FW's controller PD
4322 * list structure. This information is mainly used to find out SYSTEM
4323 * supported by the FW.
4324 */
4325 static int
4326 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4327 {
4328 int ret = 0, ld_index = 0, ids = 0;
4329 struct megasas_cmd *cmd;
4330 struct megasas_dcmd_frame *dcmd;
4331 struct MR_LD_TARGETID_LIST *ci;
4332 dma_addr_t ci_h = 0;
4333 u32 tgtid_count;
4334
4335 cmd = megasas_get_cmd(instance);
4336
4337 if (!cmd) {
4338 dev_warn(&instance->pdev->dev,
4339 "megasas_ld_list_query: Failed to get cmd\n");
4340 return -ENOMEM;
4341 }
4342
4343 dcmd = &cmd->frame->dcmd;
4344
4345 ci = pci_alloc_consistent(instance->pdev,
4346 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4347
4348 if (!ci) {
4349 dev_warn(&instance->pdev->dev,
4350 "Failed to alloc mem for ld_list_query\n");
4351 megasas_return_cmd(instance, cmd);
4352 return -ENOMEM;
4353 }
4354
4355 memset(ci, 0, sizeof(*ci));
4356 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4357
4358 dcmd->mbox.b[0] = query_type;
4359 if (instance->supportmax256vd)
4360 dcmd->mbox.b[2] = 1;
4361
4362 dcmd->cmd = MFI_CMD_DCMD;
4363 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4364 dcmd->sge_count = 1;
4365 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4366 dcmd->timeout = 0;
4367 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4368 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4369 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4370 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4371 dcmd->pad_0 = 0;
4372
4373 if (instance->ctrl_context && !instance->mask_interrupts)
4374 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4375 else
4376 ret = megasas_issue_polled(instance, cmd);
4377
4378 switch (ret) {
4379 case DCMD_FAILED:
4380 dev_info(&instance->pdev->dev,
4381 "DCMD not supported by firmware - %s %d\n",
4382 __func__, __LINE__);
4383 ret = megasas_get_ld_list(instance);
4384 break;
4385 case DCMD_TIMEOUT:
4386 switch (dcmd_timeout_ocr_possible(instance)) {
4387 case INITIATE_OCR:
4388 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4389 /*
4390 * DCMD failed from AEN path.
4391 * AEN path already hold reset_mutex to avoid PCI access
4392 * while OCR is in progress.
4393 */
4394 mutex_unlock(&instance->reset_mutex);
4395 megasas_reset_fusion(instance->host,
4396 MFI_IO_TIMEOUT_OCR);
4397 mutex_lock(&instance->reset_mutex);
4398 break;
4399 case KILL_ADAPTER:
4400 megaraid_sas_kill_hba(instance);
4401 break;
4402 case IGNORE_TIMEOUT:
4403 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4404 __func__, __LINE__);
4405 break;
4406 }
4407
4408 break;
4409 case DCMD_SUCCESS:
4410 tgtid_count = le32_to_cpu(ci->count);
4411
4412 if ((tgtid_count > (instance->fw_supported_vd_count)))
4413 break;
4414
4415 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4416 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4417 ids = ci->targetId[ld_index];
4418 instance->ld_ids[ids] = ci->targetId[ld_index];
4419 }
4420
4421 break;
4422 }
4423
4424 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4425 ci, ci_h);
4426
4427 if (ret != DCMD_TIMEOUT)
4428 megasas_return_cmd(instance, cmd);
4429
4430 return ret;
4431 }
4432
4433 /*
4434 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4435 * instance : Controller's instance
4436 */
4437 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4438 {
4439 struct fusion_context *fusion;
4440 u32 old_map_sz;
4441 u32 new_map_sz;
4442
4443 fusion = instance->ctrl_context;
4444 /* For MFI based controllers return dummy success */
4445 if (!fusion)
4446 return;
4447
4448 instance->supportmax256vd =
4449 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4450 /* Below is additional check to address future FW enhancement */
4451 if (instance->ctrl_info->max_lds > 64)
4452 instance->supportmax256vd = 1;
4453
4454 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4455 * MEGASAS_MAX_DEV_PER_CHANNEL;
4456 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4457 * MEGASAS_MAX_DEV_PER_CHANNEL;
4458 if (instance->supportmax256vd) {
4459 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4460 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4461 } else {
4462 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4463 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4464 }
4465
4466 dev_info(&instance->pdev->dev,
4467 "firmware type\t: %s\n",
4468 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4469 "Legacy(64 VD) firmware");
4470
4471 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4472 (sizeof(struct MR_LD_SPAN_MAP) *
4473 (instance->fw_supported_vd_count - 1));
4474 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4475 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4476 (sizeof(struct MR_LD_SPAN_MAP) *
4477 (instance->drv_supported_vd_count - 1));
4478
4479 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4480
4481
4482 if (instance->supportmax256vd)
4483 fusion->current_map_sz = new_map_sz;
4484 else
4485 fusion->current_map_sz = old_map_sz;
4486 }
4487
4488 /**
4489 * megasas_get_controller_info - Returns FW's controller structure
4490 * @instance: Adapter soft state
4491 *
4492 * Issues an internal command (DCMD) to get the FW's controller structure.
4493 * This information is mainly used to find out the maximum IO transfer per
4494 * command supported by the FW.
4495 */
4496 int
4497 megasas_get_ctrl_info(struct megasas_instance *instance)
4498 {
4499 int ret = 0;
4500 struct megasas_cmd *cmd;
4501 struct megasas_dcmd_frame *dcmd;
4502 struct megasas_ctrl_info *ci;
4503 struct megasas_ctrl_info *ctrl_info;
4504 dma_addr_t ci_h = 0;
4505
4506 ctrl_info = instance->ctrl_info;
4507
4508 cmd = megasas_get_cmd(instance);
4509
4510 if (!cmd) {
4511 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4512 return -ENOMEM;
4513 }
4514
4515 dcmd = &cmd->frame->dcmd;
4516
4517 ci = pci_alloc_consistent(instance->pdev,
4518 sizeof(struct megasas_ctrl_info), &ci_h);
4519
4520 if (!ci) {
4521 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4522 megasas_return_cmd(instance, cmd);
4523 return -ENOMEM;
4524 }
4525
4526 memset(ci, 0, sizeof(*ci));
4527 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4528
4529 dcmd->cmd = MFI_CMD_DCMD;
4530 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4531 dcmd->sge_count = 1;
4532 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4533 dcmd->timeout = 0;
4534 dcmd->pad_0 = 0;
4535 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4536 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4537 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4538 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4539 dcmd->mbox.b[0] = 1;
4540
4541 if (instance->ctrl_context && !instance->mask_interrupts)
4542 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4543 else
4544 ret = megasas_issue_polled(instance, cmd);
4545
4546 switch (ret) {
4547 case DCMD_SUCCESS:
4548 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4549 /* Save required controller information in
4550 * CPU endianness format.
4551 */
4552 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4553 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4554 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4555
4556 /* Update the latest Ext VD info.
4557 * From Init path, store current firmware details.
4558 * From OCR path, detect any firmware properties changes.
4559 * in case of Firmware upgrade without system reboot.
4560 */
4561 megasas_update_ext_vd_details(instance);
4562 instance->use_seqnum_jbod_fp =
4563 ctrl_info->adapterOperations3.useSeqNumJbodFP;
4564
4565 /*Check whether controller is iMR or MR */
4566 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4567 dev_info(&instance->pdev->dev,
4568 "controller type\t: %s(%dMB)\n",
4569 instance->is_imr ? "iMR" : "MR",
4570 le16_to_cpu(ctrl_info->memory_size));
4571
4572 instance->disableOnlineCtrlReset =
4573 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4574 instance->secure_jbod_support =
4575 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4576 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4577 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4578 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4579 instance->secure_jbod_support ? "Yes" : "No");
4580 break;
4581
4582 case DCMD_TIMEOUT:
4583 switch (dcmd_timeout_ocr_possible(instance)) {
4584 case INITIATE_OCR:
4585 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4586 megasas_reset_fusion(instance->host,
4587 MFI_IO_TIMEOUT_OCR);
4588 break;
4589 case KILL_ADAPTER:
4590 megaraid_sas_kill_hba(instance);
4591 break;
4592 case IGNORE_TIMEOUT:
4593 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4594 __func__, __LINE__);
4595 break;
4596 }
4597 case DCMD_FAILED:
4598 megaraid_sas_kill_hba(instance);
4599 break;
4600
4601 }
4602
4603 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4604 ci, ci_h);
4605
4606 megasas_return_cmd(instance, cmd);
4607
4608
4609 return ret;
4610 }
4611
4612 /*
4613 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4614 * to firmware
4615 *
4616 * @instance: Adapter soft state
4617 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4618 MR_CRASH_BUF_TURN_OFF = 0
4619 MR_CRASH_BUF_TURN_ON = 1
4620 * @return 0 on success non-zero on failure.
4621 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4622 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4623 * that driver supports crash dump feature. This DCMD will be sent only if
4624 * crash dump feature is supported by the FW.
4625 *
4626 */
4627 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4628 u8 crash_buf_state)
4629 {
4630 int ret = 0;
4631 struct megasas_cmd *cmd;
4632 struct megasas_dcmd_frame *dcmd;
4633
4634 cmd = megasas_get_cmd(instance);
4635
4636 if (!cmd) {
4637 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4638 return -ENOMEM;
4639 }
4640
4641
4642 dcmd = &cmd->frame->dcmd;
4643
4644 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4645 dcmd->mbox.b[0] = crash_buf_state;
4646 dcmd->cmd = MFI_CMD_DCMD;
4647 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4648 dcmd->sge_count = 1;
4649 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4650 dcmd->timeout = 0;
4651 dcmd->pad_0 = 0;
4652 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4653 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4654 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4655 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4656
4657 if (instance->ctrl_context && !instance->mask_interrupts)
4658 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4659 else
4660 ret = megasas_issue_polled(instance, cmd);
4661
4662 if (ret == DCMD_TIMEOUT) {
4663 switch (dcmd_timeout_ocr_possible(instance)) {
4664 case INITIATE_OCR:
4665 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4666 megasas_reset_fusion(instance->host,
4667 MFI_IO_TIMEOUT_OCR);
4668 break;
4669 case KILL_ADAPTER:
4670 megaraid_sas_kill_hba(instance);
4671 break;
4672 case IGNORE_TIMEOUT:
4673 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4674 __func__, __LINE__);
4675 break;
4676 }
4677 } else
4678 megasas_return_cmd(instance, cmd);
4679
4680 return ret;
4681 }
4682
4683 /**
4684 * megasas_issue_init_mfi - Initializes the FW
4685 * @instance: Adapter soft state
4686 *
4687 * Issues the INIT MFI cmd
4688 */
4689 static int
4690 megasas_issue_init_mfi(struct megasas_instance *instance)
4691 {
4692 __le32 context;
4693 struct megasas_cmd *cmd;
4694 struct megasas_init_frame *init_frame;
4695 struct megasas_init_queue_info *initq_info;
4696 dma_addr_t init_frame_h;
4697 dma_addr_t initq_info_h;
4698
4699 /*
4700 * Prepare a init frame. Note the init frame points to queue info
4701 * structure. Each frame has SGL allocated after first 64 bytes. For
4702 * this frame - since we don't need any SGL - we use SGL's space as
4703 * queue info structure
4704 *
4705 * We will not get a NULL command below. We just created the pool.
4706 */
4707 cmd = megasas_get_cmd(instance);
4708
4709 init_frame = (struct megasas_init_frame *)cmd->frame;
4710 initq_info = (struct megasas_init_queue_info *)
4711 ((unsigned long)init_frame + 64);
4712
4713 init_frame_h = cmd->frame_phys_addr;
4714 initq_info_h = init_frame_h + 64;
4715
4716 context = init_frame->context;
4717 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4718 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4719 init_frame->context = context;
4720
4721 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4722 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4723
4724 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4725 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4726
4727 init_frame->cmd = MFI_CMD_INIT;
4728 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4729 init_frame->queue_info_new_phys_addr_lo =
4730 cpu_to_le32(lower_32_bits(initq_info_h));
4731 init_frame->queue_info_new_phys_addr_hi =
4732 cpu_to_le32(upper_32_bits(initq_info_h));
4733
4734 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4735
4736 /*
4737 * disable the intr before firing the init frame to FW
4738 */
4739 instance->instancet->disable_intr(instance);
4740
4741 /*
4742 * Issue the init frame in polled mode
4743 */
4744
4745 if (megasas_issue_polled(instance, cmd)) {
4746 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4747 megasas_return_cmd(instance, cmd);
4748 goto fail_fw_init;
4749 }
4750
4751 megasas_return_cmd(instance, cmd);
4752
4753 return 0;
4754
4755 fail_fw_init:
4756 return -EINVAL;
4757 }
4758
4759 static u32
4760 megasas_init_adapter_mfi(struct megasas_instance *instance)
4761 {
4762 struct megasas_register_set __iomem *reg_set;
4763 u32 context_sz;
4764 u32 reply_q_sz;
4765
4766 reg_set = instance->reg_set;
4767
4768 /*
4769 * Get various operational parameters from status register
4770 */
4771 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4772 /*
4773 * Reduce the max supported cmds by 1. This is to ensure that the
4774 * reply_q_sz (1 more than the max cmd that driver may send)
4775 * does not exceed max cmds that the FW can support
4776 */
4777 instance->max_fw_cmds = instance->max_fw_cmds-1;
4778 instance->max_mfi_cmds = instance->max_fw_cmds;
4779 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4780 0x10;
4781 /*
4782 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4783 * are reserved for IOCTL + driver's internal DCMDs.
4784 */
4785 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4786 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4787 instance->max_scsi_cmds = (instance->max_fw_cmds -
4788 MEGASAS_SKINNY_INT_CMDS);
4789 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4790 } else {
4791 instance->max_scsi_cmds = (instance->max_fw_cmds -
4792 MEGASAS_INT_CMDS);
4793 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4794 }
4795
4796 instance->cur_can_queue = instance->max_scsi_cmds;
4797 /*
4798 * Create a pool of commands
4799 */
4800 if (megasas_alloc_cmds(instance))
4801 goto fail_alloc_cmds;
4802
4803 /*
4804 * Allocate memory for reply queue. Length of reply queue should
4805 * be _one_ more than the maximum commands handled by the firmware.
4806 *
4807 * Note: When FW completes commands, it places corresponding contex
4808 * values in this circular reply queue. This circular queue is a fairly
4809 * typical producer-consumer queue. FW is the producer (of completed
4810 * commands) and the driver is the consumer.
4811 */
4812 context_sz = sizeof(u32);
4813 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4814
4815 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4816 reply_q_sz,
4817 &instance->reply_queue_h);
4818
4819 if (!instance->reply_queue) {
4820 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4821 goto fail_reply_queue;
4822 }
4823
4824 if (megasas_issue_init_mfi(instance))
4825 goto fail_fw_init;
4826
4827 if (megasas_get_ctrl_info(instance)) {
4828 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4829 "Fail from %s %d\n", instance->unique_id,
4830 __func__, __LINE__);
4831 goto fail_fw_init;
4832 }
4833
4834 instance->fw_support_ieee = 0;
4835 instance->fw_support_ieee =
4836 (instance->instancet->read_fw_status_reg(reg_set) &
4837 0x04000000);
4838
4839 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4840 instance->fw_support_ieee);
4841
4842 if (instance->fw_support_ieee)
4843 instance->flag_ieee = 1;
4844
4845 return 0;
4846
4847 fail_fw_init:
4848
4849 pci_free_consistent(instance->pdev, reply_q_sz,
4850 instance->reply_queue, instance->reply_queue_h);
4851 fail_reply_queue:
4852 megasas_free_cmds(instance);
4853
4854 fail_alloc_cmds:
4855 return 1;
4856 }
4857
4858 /*
4859 * megasas_setup_irqs_msix - register legacy interrupts.
4860 * @instance: Adapter soft state
4861 *
4862 * Do not enable interrupt, only setup ISRs.
4863 *
4864 * Return 0 on success.
4865 */
4866 static int
4867 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4868 {
4869 struct pci_dev *pdev;
4870
4871 pdev = instance->pdev;
4872 instance->irq_context[0].instance = instance;
4873 instance->irq_context[0].MSIxIndex = 0;
4874 if (request_irq(pdev->irq, instance->instancet->service_isr,
4875 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4876 dev_err(&instance->pdev->dev,
4877 "Failed to register IRQ from %s %d\n",
4878 __func__, __LINE__);
4879 return -1;
4880 }
4881 return 0;
4882 }
4883
4884 /**
4885 * megasas_setup_irqs_msix - register MSI-x interrupts.
4886 * @instance: Adapter soft state
4887 * @is_probe: Driver probe check
4888 *
4889 * Do not enable interrupt, only setup ISRs.
4890 *
4891 * Return 0 on success.
4892 */
4893 static int
4894 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4895 {
4896 int i, j, cpu;
4897 struct pci_dev *pdev;
4898
4899 pdev = instance->pdev;
4900
4901 /* Try MSI-x */
4902 cpu = cpumask_first(cpu_online_mask);
4903 for (i = 0; i < instance->msix_vectors; i++) {
4904 instance->irq_context[i].instance = instance;
4905 instance->irq_context[i].MSIxIndex = i;
4906 if (request_irq(instance->msixentry[i].vector,
4907 instance->instancet->service_isr, 0, "megasas",
4908 &instance->irq_context[i])) {
4909 dev_err(&instance->pdev->dev,
4910 "Failed to register IRQ for vector %d.\n", i);
4911 for (j = 0; j < i; j++) {
4912 if (smp_affinity_enable)
4913 irq_set_affinity_hint(
4914 instance->msixentry[j].vector, NULL);
4915 free_irq(instance->msixentry[j].vector,
4916 &instance->irq_context[j]);
4917 }
4918 /* Retry irq register for IO_APIC*/
4919 instance->msix_vectors = 0;
4920 if (is_probe)
4921 return megasas_setup_irqs_ioapic(instance);
4922 else
4923 return -1;
4924 }
4925 if (smp_affinity_enable) {
4926 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4927 get_cpu_mask(cpu)))
4928 dev_err(&instance->pdev->dev,
4929 "Failed to set affinity hint"
4930 " for cpu %d\n", cpu);
4931 cpu = cpumask_next(cpu, cpu_online_mask);
4932 }
4933 }
4934 return 0;
4935 }
4936
4937 /*
4938 * megasas_destroy_irqs- unregister interrupts.
4939 * @instance: Adapter soft state
4940 * return: void
4941 */
4942 static void
4943 megasas_destroy_irqs(struct megasas_instance *instance) {
4944
4945 int i;
4946
4947 if (instance->msix_vectors)
4948 for (i = 0; i < instance->msix_vectors; i++) {
4949 if (smp_affinity_enable)
4950 irq_set_affinity_hint(
4951 instance->msixentry[i].vector, NULL);
4952 free_irq(instance->msixentry[i].vector,
4953 &instance->irq_context[i]);
4954 }
4955 else
4956 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4957 }
4958
4959 /**
4960 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
4961 * @instance: Adapter soft state
4962 * @is_probe: Driver probe check
4963 *
4964 * Return 0 on success.
4965 */
4966 void
4967 megasas_setup_jbod_map(struct megasas_instance *instance)
4968 {
4969 int i;
4970 struct fusion_context *fusion = instance->ctrl_context;
4971 u32 pd_seq_map_sz;
4972
4973 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
4974 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
4975
4976 if (reset_devices || !fusion ||
4977 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
4978 dev_info(&instance->pdev->dev,
4979 "Jbod map is not supported %s %d\n",
4980 __func__, __LINE__);
4981 instance->use_seqnum_jbod_fp = false;
4982 return;
4983 }
4984
4985 if (fusion->pd_seq_sync[0])
4986 goto skip_alloc;
4987
4988 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
4989 fusion->pd_seq_sync[i] = dma_alloc_coherent
4990 (&instance->pdev->dev, pd_seq_map_sz,
4991 &fusion->pd_seq_phys[i], GFP_KERNEL);
4992 if (!fusion->pd_seq_sync[i]) {
4993 dev_err(&instance->pdev->dev,
4994 "Failed to allocate memory from %s %d\n",
4995 __func__, __LINE__);
4996 if (i == 1) {
4997 dma_free_coherent(&instance->pdev->dev,
4998 pd_seq_map_sz, fusion->pd_seq_sync[0],
4999 fusion->pd_seq_phys[0]);
5000 fusion->pd_seq_sync[0] = NULL;
5001 }
5002 instance->use_seqnum_jbod_fp = false;
5003 return;
5004 }
5005 }
5006
5007 skip_alloc:
5008 if (!megasas_sync_pd_seq_num(instance, false) &&
5009 !megasas_sync_pd_seq_num(instance, true))
5010 instance->use_seqnum_jbod_fp = true;
5011 else
5012 instance->use_seqnum_jbod_fp = false;
5013 }
5014
5015 /**
5016 * megasas_init_fw - Initializes the FW
5017 * @instance: Adapter soft state
5018 *
5019 * This is the main function for initializing firmware
5020 */
5021
5022 static int megasas_init_fw(struct megasas_instance *instance)
5023 {
5024 u32 max_sectors_1;
5025 u32 max_sectors_2;
5026 u32 tmp_sectors, msix_enable, scratch_pad_2;
5027 resource_size_t base_addr;
5028 struct megasas_register_set __iomem *reg_set;
5029 struct megasas_ctrl_info *ctrl_info = NULL;
5030 unsigned long bar_list;
5031 int i, loop, fw_msix_count = 0;
5032 struct IOV_111 *iovPtr;
5033 struct fusion_context *fusion;
5034
5035 fusion = instance->ctrl_context;
5036
5037 /* Find first memory bar */
5038 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5039 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
5040 if (pci_request_selected_regions(instance->pdev, instance->bar,
5041 "megasas: LSI")) {
5042 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5043 return -EBUSY;
5044 }
5045
5046 base_addr = pci_resource_start(instance->pdev, instance->bar);
5047 instance->reg_set = ioremap_nocache(base_addr, 8192);
5048
5049 if (!instance->reg_set) {
5050 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5051 goto fail_ioremap;
5052 }
5053
5054 reg_set = instance->reg_set;
5055
5056 switch (instance->pdev->device) {
5057 case PCI_DEVICE_ID_LSI_FUSION:
5058 case PCI_DEVICE_ID_LSI_PLASMA:
5059 case PCI_DEVICE_ID_LSI_INVADER:
5060 case PCI_DEVICE_ID_LSI_FURY:
5061 case PCI_DEVICE_ID_LSI_INTRUDER:
5062 case PCI_DEVICE_ID_LSI_INTRUDER_24:
5063 case PCI_DEVICE_ID_LSI_CUTLASS_52:
5064 case PCI_DEVICE_ID_LSI_CUTLASS_53:
5065 instance->instancet = &megasas_instance_template_fusion;
5066 break;
5067 case PCI_DEVICE_ID_LSI_SAS1078R:
5068 case PCI_DEVICE_ID_LSI_SAS1078DE:
5069 instance->instancet = &megasas_instance_template_ppc;
5070 break;
5071 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5072 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5073 instance->instancet = &megasas_instance_template_gen2;
5074 break;
5075 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5076 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5077 instance->instancet = &megasas_instance_template_skinny;
5078 break;
5079 case PCI_DEVICE_ID_LSI_SAS1064R:
5080 case PCI_DEVICE_ID_DELL_PERC5:
5081 default:
5082 instance->instancet = &megasas_instance_template_xscale;
5083 break;
5084 }
5085
5086 if (megasas_transition_to_ready(instance, 0)) {
5087 atomic_set(&instance->fw_reset_no_pci_access, 1);
5088 instance->instancet->adp_reset
5089 (instance, instance->reg_set);
5090 atomic_set(&instance->fw_reset_no_pci_access, 0);
5091 dev_info(&instance->pdev->dev,
5092 "FW restarted successfully from %s!\n",
5093 __func__);
5094
5095 /*waitting for about 30 second before retry*/
5096 ssleep(30);
5097
5098 if (megasas_transition_to_ready(instance, 0))
5099 goto fail_ready_state;
5100 }
5101
5102 /*
5103 * MSI-X host index 0 is common for all adapter.
5104 * It is used for all MPT based Adapters.
5105 */
5106 instance->reply_post_host_index_addr[0] =
5107 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
5108 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5109
5110 /* Check if MSI-X is supported while in ready state */
5111 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5112 0x4000000) >> 0x1a;
5113 if (msix_enable && !msix_disable) {
5114 scratch_pad_2 = readl
5115 (&instance->reg_set->outbound_scratch_pad_2);
5116 /* Check max MSI-X vectors */
5117 if (fusion) {
5118 if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
5119 instance->msix_vectors = (scratch_pad_2
5120 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5121 fw_msix_count = instance->msix_vectors;
5122 } else { /* Invader series supports more than 8 MSI-x vectors*/
5123 instance->msix_vectors = ((scratch_pad_2
5124 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5125 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5126 if (rdpq_enable)
5127 instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5128 1 : 0;
5129 fw_msix_count = instance->msix_vectors;
5130 /* Save 1-15 reply post index address to local memory
5131 * Index 0 is already saved from reg offset
5132 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5133 */
5134 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5135 instance->reply_post_host_index_addr[loop] =
5136 (u32 __iomem *)
5137 ((u8 __iomem *)instance->reg_set +
5138 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5139 + (loop * 0x10));
5140 }
5141 }
5142 if (msix_vectors)
5143 instance->msix_vectors = min(msix_vectors,
5144 instance->msix_vectors);
5145 } else /* MFI adapters */
5146 instance->msix_vectors = 1;
5147 /* Don't bother allocating more MSI-X vectors than cpus */
5148 instance->msix_vectors = min(instance->msix_vectors,
5149 (unsigned int)num_online_cpus());
5150 for (i = 0; i < instance->msix_vectors; i++)
5151 instance->msixentry[i].entry = i;
5152 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
5153 1, instance->msix_vectors);
5154 if (i > 0)
5155 instance->msix_vectors = i;
5156 else
5157 instance->msix_vectors = 0;
5158 }
5159
5160 dev_info(&instance->pdev->dev,
5161 "firmware supports msix\t: (%d)", fw_msix_count);
5162 dev_info(&instance->pdev->dev,
5163 "current msix/online cpus\t: (%d/%d)\n",
5164 instance->msix_vectors, (unsigned int)num_online_cpus());
5165 dev_info(&instance->pdev->dev,
5166 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5167
5168 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5169 (unsigned long)instance);
5170
5171 if (instance->msix_vectors ?
5172 megasas_setup_irqs_msix(instance, 1) :
5173 megasas_setup_irqs_ioapic(instance))
5174 goto fail_setup_irqs;
5175
5176 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
5177 GFP_KERNEL);
5178 if (instance->ctrl_info == NULL)
5179 goto fail_init_adapter;
5180
5181 /*
5182 * Below are default value for legacy Firmware.
5183 * non-fusion based controllers
5184 */
5185 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5186 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5187 /* Get operational params, sge flags, send init cmd to controller */
5188 if (instance->instancet->init_adapter(instance))
5189 goto fail_init_adapter;
5190
5191
5192 instance->instancet->enable_intr(instance);
5193
5194 dev_info(&instance->pdev->dev, "INIT adapter done\n");
5195
5196 megasas_setup_jbod_map(instance);
5197
5198 /** for passthrough
5199 * the following function will get the PD LIST.
5200 */
5201 memset(instance->pd_list, 0,
5202 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5203 if (megasas_get_pd_list(instance) < 0) {
5204 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5205 goto fail_get_pd_list;
5206 }
5207
5208 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5209 if (megasas_ld_list_query(instance,
5210 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5211 megasas_get_ld_list(instance);
5212
5213 /*
5214 * Compute the max allowed sectors per IO: The controller info has two
5215 * limits on max sectors. Driver should use the minimum of these two.
5216 *
5217 * 1 << stripe_sz_ops.min = max sectors per strip
5218 *
5219 * Note that older firmwares ( < FW ver 30) didn't report information
5220 * to calculate max_sectors_1. So the number ended up as zero always.
5221 */
5222 tmp_sectors = 0;
5223 ctrl_info = instance->ctrl_info;
5224
5225 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5226 le16_to_cpu(ctrl_info->max_strips_per_io);
5227 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5228
5229 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5230
5231 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5232 instance->passive = ctrl_info->cluster.passive;
5233 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5234 instance->UnevenSpanSupport =
5235 ctrl_info->adapterOperations2.supportUnevenSpans;
5236 if (instance->UnevenSpanSupport) {
5237 struct fusion_context *fusion = instance->ctrl_context;
5238 if (MR_ValidateMapInfo(instance))
5239 fusion->fast_path_io = 1;
5240 else
5241 fusion->fast_path_io = 0;
5242
5243 }
5244 if (ctrl_info->host_interface.SRIOV) {
5245 instance->requestorId = ctrl_info->iov.requestorId;
5246 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5247 if (!ctrl_info->adapterOperations2.activePassive)
5248 instance->PlasmaFW111 = 1;
5249
5250 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5251 instance->PlasmaFW111 ? "1.11" : "new");
5252
5253 if (instance->PlasmaFW111) {
5254 iovPtr = (struct IOV_111 *)
5255 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5256 instance->requestorId = iovPtr->requestorId;
5257 }
5258 }
5259 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5260 instance->requestorId);
5261 }
5262
5263 instance->crash_dump_fw_support =
5264 ctrl_info->adapterOperations3.supportCrashDump;
5265 instance->crash_dump_drv_support =
5266 (instance->crash_dump_fw_support &&
5267 instance->crash_dump_buf);
5268 if (instance->crash_dump_drv_support)
5269 megasas_set_crash_dump_params(instance,
5270 MR_CRASH_BUF_TURN_OFF);
5271
5272 else {
5273 if (instance->crash_dump_buf)
5274 pci_free_consistent(instance->pdev,
5275 CRASH_DMA_BUF_SIZE,
5276 instance->crash_dump_buf,
5277 instance->crash_dump_h);
5278 instance->crash_dump_buf = NULL;
5279 }
5280
5281
5282 dev_info(&instance->pdev->dev,
5283 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5284 le16_to_cpu(ctrl_info->pci.vendor_id),
5285 le16_to_cpu(ctrl_info->pci.device_id),
5286 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5287 le16_to_cpu(ctrl_info->pci.sub_device_id));
5288 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
5289 instance->UnevenSpanSupport ? "yes" : "no");
5290 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
5291 instance->crash_dump_drv_support ? "yes" : "no");
5292 dev_info(&instance->pdev->dev, "jbod sync map : %s\n",
5293 instance->use_seqnum_jbod_fp ? "yes" : "no");
5294
5295
5296 instance->max_sectors_per_req = instance->max_num_sge *
5297 SGE_BUFFER_SIZE / 512;
5298 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5299 instance->max_sectors_per_req = tmp_sectors;
5300
5301 /* Check for valid throttlequeuedepth module parameter */
5302 if (throttlequeuedepth &&
5303 throttlequeuedepth <= instance->max_scsi_cmds)
5304 instance->throttlequeuedepth = throttlequeuedepth;
5305 else
5306 instance->throttlequeuedepth =
5307 MEGASAS_THROTTLE_QUEUE_DEPTH;
5308
5309 if (resetwaittime > MEGASAS_RESET_WAIT_TIME)
5310 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5311
5312 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5313 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5314
5315 /* Launch SR-IOV heartbeat timer */
5316 if (instance->requestorId) {
5317 if (!megasas_sriov_start_heartbeat(instance, 1))
5318 megasas_start_timer(instance,
5319 &instance->sriov_heartbeat_timer,
5320 megasas_sriov_heartbeat_handler,
5321 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5322 else
5323 instance->skip_heartbeat_timer_del = 1;
5324 }
5325
5326 return 0;
5327
5328 fail_get_pd_list:
5329 instance->instancet->disable_intr(instance);
5330 fail_init_adapter:
5331 megasas_destroy_irqs(instance);
5332 fail_setup_irqs:
5333 if (instance->msix_vectors)
5334 pci_disable_msix(instance->pdev);
5335 instance->msix_vectors = 0;
5336 fail_ready_state:
5337 kfree(instance->ctrl_info);
5338 instance->ctrl_info = NULL;
5339 iounmap(instance->reg_set);
5340
5341 fail_ioremap:
5342 pci_release_selected_regions(instance->pdev, instance->bar);
5343
5344 return -EINVAL;
5345 }
5346
5347 /**
5348 * megasas_release_mfi - Reverses the FW initialization
5349 * @instance: Adapter soft state
5350 */
5351 static void megasas_release_mfi(struct megasas_instance *instance)
5352 {
5353 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5354
5355 if (instance->reply_queue)
5356 pci_free_consistent(instance->pdev, reply_q_sz,
5357 instance->reply_queue, instance->reply_queue_h);
5358
5359 megasas_free_cmds(instance);
5360
5361 iounmap(instance->reg_set);
5362
5363 pci_release_selected_regions(instance->pdev, instance->bar);
5364 }
5365
5366 /**
5367 * megasas_get_seq_num - Gets latest event sequence numbers
5368 * @instance: Adapter soft state
5369 * @eli: FW event log sequence numbers information
5370 *
5371 * FW maintains a log of all events in a non-volatile area. Upper layers would
5372 * usually find out the latest sequence number of the events, the seq number at
5373 * the boot etc. They would "read" all the events below the latest seq number
5374 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5375 * number), they would subsribe to AEN (asynchronous event notification) and
5376 * wait for the events to happen.
5377 */
5378 static int
5379 megasas_get_seq_num(struct megasas_instance *instance,
5380 struct megasas_evt_log_info *eli)
5381 {
5382 struct megasas_cmd *cmd;
5383 struct megasas_dcmd_frame *dcmd;
5384 struct megasas_evt_log_info *el_info;
5385 dma_addr_t el_info_h = 0;
5386
5387 cmd = megasas_get_cmd(instance);
5388
5389 if (!cmd) {
5390 return -ENOMEM;
5391 }
5392
5393 dcmd = &cmd->frame->dcmd;
5394 el_info = pci_alloc_consistent(instance->pdev,
5395 sizeof(struct megasas_evt_log_info),
5396 &el_info_h);
5397
5398 if (!el_info) {
5399 megasas_return_cmd(instance, cmd);
5400 return -ENOMEM;
5401 }
5402
5403 memset(el_info, 0, sizeof(*el_info));
5404 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5405
5406 dcmd->cmd = MFI_CMD_DCMD;
5407 dcmd->cmd_status = 0x0;
5408 dcmd->sge_count = 1;
5409 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5410 dcmd->timeout = 0;
5411 dcmd->pad_0 = 0;
5412 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5413 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5414 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
5415 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5416
5417 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
5418 DCMD_SUCCESS) {
5419 /*
5420 * Copy the data back into callers buffer
5421 */
5422 eli->newest_seq_num = el_info->newest_seq_num;
5423 eli->oldest_seq_num = el_info->oldest_seq_num;
5424 eli->clear_seq_num = el_info->clear_seq_num;
5425 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5426 eli->boot_seq_num = el_info->boot_seq_num;
5427 } else
5428 dev_err(&instance->pdev->dev, "DCMD failed "
5429 "from %s\n", __func__);
5430
5431 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5432 el_info, el_info_h);
5433
5434 megasas_return_cmd(instance, cmd);
5435
5436 return 0;
5437 }
5438
5439 /**
5440 * megasas_register_aen - Registers for asynchronous event notification
5441 * @instance: Adapter soft state
5442 * @seq_num: The starting sequence number
5443 * @class_locale: Class of the event
5444 *
5445 * This function subscribes for AEN for events beyond the @seq_num. It requests
5446 * to be notified if and only if the event is of type @class_locale
5447 */
5448 static int
5449 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5450 u32 class_locale_word)
5451 {
5452 int ret_val;
5453 struct megasas_cmd *cmd;
5454 struct megasas_dcmd_frame *dcmd;
5455 union megasas_evt_class_locale curr_aen;
5456 union megasas_evt_class_locale prev_aen;
5457
5458 /*
5459 * If there an AEN pending already (aen_cmd), check if the
5460 * class_locale of that pending AEN is inclusive of the new
5461 * AEN request we currently have. If it is, then we don't have
5462 * to do anything. In other words, whichever events the current
5463 * AEN request is subscribing to, have already been subscribed
5464 * to.
5465 *
5466 * If the old_cmd is _not_ inclusive, then we have to abort
5467 * that command, form a class_locale that is superset of both
5468 * old and current and re-issue to the FW
5469 */
5470
5471 curr_aen.word = class_locale_word;
5472
5473 if (instance->aen_cmd) {
5474
5475 prev_aen.word =
5476 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5477
5478 /*
5479 * A class whose enum value is smaller is inclusive of all
5480 * higher values. If a PROGRESS (= -1) was previously
5481 * registered, then a new registration requests for higher
5482 * classes need not be sent to FW. They are automatically
5483 * included.
5484 *
5485 * Locale numbers don't have such hierarchy. They are bitmap
5486 * values
5487 */
5488 if ((prev_aen.members.class <= curr_aen.members.class) &&
5489 !((prev_aen.members.locale & curr_aen.members.locale) ^
5490 curr_aen.members.locale)) {
5491 /*
5492 * Previously issued event registration includes
5493 * current request. Nothing to do.
5494 */
5495 return 0;
5496 } else {
5497 curr_aen.members.locale |= prev_aen.members.locale;
5498
5499 if (prev_aen.members.class < curr_aen.members.class)
5500 curr_aen.members.class = prev_aen.members.class;
5501
5502 instance->aen_cmd->abort_aen = 1;
5503 ret_val = megasas_issue_blocked_abort_cmd(instance,
5504 instance->
5505 aen_cmd, 30);
5506
5507 if (ret_val) {
5508 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5509 "previous AEN command\n");
5510 return ret_val;
5511 }
5512 }
5513 }
5514
5515 cmd = megasas_get_cmd(instance);
5516
5517 if (!cmd)
5518 return -ENOMEM;
5519
5520 dcmd = &cmd->frame->dcmd;
5521
5522 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5523
5524 /*
5525 * Prepare DCMD for aen registration
5526 */
5527 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5528
5529 dcmd->cmd = MFI_CMD_DCMD;
5530 dcmd->cmd_status = 0x0;
5531 dcmd->sge_count = 1;
5532 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5533 dcmd->timeout = 0;
5534 dcmd->pad_0 = 0;
5535 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5536 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5537 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5538 instance->last_seq_num = seq_num;
5539 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5540 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5541 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5542
5543 if (instance->aen_cmd != NULL) {
5544 megasas_return_cmd(instance, cmd);
5545 return 0;
5546 }
5547
5548 /*
5549 * Store reference to the cmd used to register for AEN. When an
5550 * application wants us to register for AEN, we have to abort this
5551 * cmd and re-register with a new EVENT LOCALE supplied by that app
5552 */
5553 instance->aen_cmd = cmd;
5554
5555 /*
5556 * Issue the aen registration frame
5557 */
5558 instance->instancet->issue_dcmd(instance, cmd);
5559
5560 return 0;
5561 }
5562
5563 /**
5564 * megasas_start_aen - Subscribes to AEN during driver load time
5565 * @instance: Adapter soft state
5566 */
5567 static int megasas_start_aen(struct megasas_instance *instance)
5568 {
5569 struct megasas_evt_log_info eli;
5570 union megasas_evt_class_locale class_locale;
5571
5572 /*
5573 * Get the latest sequence number from FW
5574 */
5575 memset(&eli, 0, sizeof(eli));
5576
5577 if (megasas_get_seq_num(instance, &eli))
5578 return -1;
5579
5580 /*
5581 * Register AEN with FW for latest sequence number plus 1
5582 */
5583 class_locale.members.reserved = 0;
5584 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5585 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5586
5587 return megasas_register_aen(instance,
5588 le32_to_cpu(eli.newest_seq_num) + 1,
5589 class_locale.word);
5590 }
5591
5592 /**
5593 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5594 * @instance: Adapter soft state
5595 */
5596 static int megasas_io_attach(struct megasas_instance *instance)
5597 {
5598 struct Scsi_Host *host = instance->host;
5599
5600 /*
5601 * Export parameters required by SCSI mid-layer
5602 */
5603 host->irq = instance->pdev->irq;
5604 host->unique_id = instance->unique_id;
5605 host->can_queue = instance->max_scsi_cmds;
5606 host->this_id = instance->init_id;
5607 host->sg_tablesize = instance->max_num_sge;
5608
5609 if (instance->fw_support_ieee)
5610 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5611
5612 /*
5613 * Check if the module parameter value for max_sectors can be used
5614 */
5615 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5616 instance->max_sectors_per_req = max_sectors;
5617 else {
5618 if (max_sectors) {
5619 if (((instance->pdev->device ==
5620 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5621 (instance->pdev->device ==
5622 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5623 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5624 instance->max_sectors_per_req = max_sectors;
5625 } else {
5626 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5627 "and <= %d (or < 1MB for GEN2 controller)\n",
5628 instance->max_sectors_per_req);
5629 }
5630 }
5631 }
5632
5633 host->max_sectors = instance->max_sectors_per_req;
5634 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5635 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5636 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5637 host->max_lun = MEGASAS_MAX_LUN;
5638 host->max_cmd_len = 16;
5639
5640 /*
5641 * Notify the mid-layer about the new controller
5642 */
5643 if (scsi_add_host(host, &instance->pdev->dev)) {
5644 dev_err(&instance->pdev->dev,
5645 "Failed to add host from %s %d\n",
5646 __func__, __LINE__);
5647 return -ENODEV;
5648 }
5649
5650 return 0;
5651 }
5652
5653 static int
5654 megasas_set_dma_mask(struct pci_dev *pdev)
5655 {
5656 /*
5657 * All our controllers are capable of performing 64-bit DMA
5658 */
5659 if (IS_DMA64) {
5660 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5661
5662 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5663 goto fail_set_dma_mask;
5664 }
5665 } else {
5666 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5667 goto fail_set_dma_mask;
5668 }
5669 /*
5670 * Ensure that all data structures are allocated in 32-bit
5671 * memory.
5672 */
5673 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5674 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5675 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5676 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5677 dev_info(&pdev->dev, "set 32bit DMA mask"
5678 "and 32 bit consistent mask\n");
5679 else
5680 goto fail_set_dma_mask;
5681 }
5682
5683 return 0;
5684
5685 fail_set_dma_mask:
5686 return 1;
5687 }
5688
5689 /**
5690 * megasas_probe_one - PCI hotplug entry point
5691 * @pdev: PCI device structure
5692 * @id: PCI ids of supported hotplugged adapter
5693 */
5694 static int megasas_probe_one(struct pci_dev *pdev,
5695 const struct pci_device_id *id)
5696 {
5697 int rval, pos;
5698 struct Scsi_Host *host;
5699 struct megasas_instance *instance;
5700 u16 control = 0;
5701 struct fusion_context *fusion = NULL;
5702
5703 /* Reset MSI-X in the kdump kernel */
5704 if (reset_devices) {
5705 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5706 if (pos) {
5707 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5708 &control);
5709 if (control & PCI_MSIX_FLAGS_ENABLE) {
5710 dev_info(&pdev->dev, "resetting MSI-X\n");
5711 pci_write_config_word(pdev,
5712 pos + PCI_MSIX_FLAGS,
5713 control &
5714 ~PCI_MSIX_FLAGS_ENABLE);
5715 }
5716 }
5717 }
5718
5719 /*
5720 * PCI prepping: enable device set bus mastering and dma mask
5721 */
5722 rval = pci_enable_device_mem(pdev);
5723
5724 if (rval) {
5725 return rval;
5726 }
5727
5728 pci_set_master(pdev);
5729
5730 if (megasas_set_dma_mask(pdev))
5731 goto fail_set_dma_mask;
5732
5733 host = scsi_host_alloc(&megasas_template,
5734 sizeof(struct megasas_instance));
5735
5736 if (!host) {
5737 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5738 goto fail_alloc_instance;
5739 }
5740
5741 instance = (struct megasas_instance *)host->hostdata;
5742 memset(instance, 0, sizeof(*instance));
5743 atomic_set(&instance->fw_reset_no_pci_access, 0);
5744 instance->pdev = pdev;
5745
5746 switch (instance->pdev->device) {
5747 case PCI_DEVICE_ID_LSI_FUSION:
5748 case PCI_DEVICE_ID_LSI_PLASMA:
5749 case PCI_DEVICE_ID_LSI_INVADER:
5750 case PCI_DEVICE_ID_LSI_FURY:
5751 case PCI_DEVICE_ID_LSI_INTRUDER:
5752 case PCI_DEVICE_ID_LSI_INTRUDER_24:
5753 case PCI_DEVICE_ID_LSI_CUTLASS_52:
5754 case PCI_DEVICE_ID_LSI_CUTLASS_53:
5755 {
5756 instance->ctrl_context_pages =
5757 get_order(sizeof(struct fusion_context));
5758 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5759 instance->ctrl_context_pages);
5760 if (!instance->ctrl_context) {
5761 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5762 "memory for Fusion context info\n");
5763 goto fail_alloc_dma_buf;
5764 }
5765 fusion = instance->ctrl_context;
5766 memset(fusion, 0,
5767 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5768 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5769 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
5770 fusion->adapter_type = THUNDERBOLT_SERIES;
5771 else
5772 fusion->adapter_type = INVADER_SERIES;
5773 }
5774 break;
5775 default: /* For all other supported controllers */
5776
5777 instance->producer =
5778 pci_alloc_consistent(pdev, sizeof(u32),
5779 &instance->producer_h);
5780 instance->consumer =
5781 pci_alloc_consistent(pdev, sizeof(u32),
5782 &instance->consumer_h);
5783
5784 if (!instance->producer || !instance->consumer) {
5785 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate"
5786 "memory for producer, consumer\n");
5787 goto fail_alloc_dma_buf;
5788 }
5789
5790 *instance->producer = 0;
5791 *instance->consumer = 0;
5792 break;
5793 }
5794
5795 /* Crash dump feature related initialisation*/
5796 instance->drv_buf_index = 0;
5797 instance->drv_buf_alloc = 0;
5798 instance->crash_dump_fw_support = 0;
5799 instance->crash_dump_app_support = 0;
5800 instance->fw_crash_state = UNAVAILABLE;
5801 spin_lock_init(&instance->crashdump_lock);
5802 instance->crash_dump_buf = NULL;
5803
5804 megasas_poll_wait_aen = 0;
5805 instance->flag_ieee = 0;
5806 instance->ev = NULL;
5807 instance->issuepend_done = 1;
5808 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5809 instance->is_imr = 0;
5810
5811 instance->evt_detail = pci_alloc_consistent(pdev,
5812 sizeof(struct
5813 megasas_evt_detail),
5814 &instance->evt_detail_h);
5815
5816 if (!instance->evt_detail) {
5817 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5818 "event detail structure\n");
5819 goto fail_alloc_dma_buf;
5820 }
5821
5822 if (!reset_devices) {
5823 instance->system_info_buf = pci_zalloc_consistent(pdev,
5824 sizeof(struct MR_DRV_SYSTEM_INFO),
5825 &instance->system_info_h);
5826 if (!instance->system_info_buf)
5827 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5828
5829 instance->pd_info = pci_alloc_consistent(pdev,
5830 sizeof(struct MR_PD_INFO), &instance->pd_info_h);
5831
5832 if (!instance->pd_info)
5833 dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");
5834
5835 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5836 CRASH_DMA_BUF_SIZE,
5837 &instance->crash_dump_h);
5838 if (!instance->crash_dump_buf)
5839 dev_err(&pdev->dev, "Can't allocate Firmware "
5840 "crash dump DMA buffer\n");
5841 }
5842
5843 /*
5844 * Initialize locks and queues
5845 */
5846 INIT_LIST_HEAD(&instance->cmd_pool);
5847 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5848
5849 atomic_set(&instance->fw_outstanding,0);
5850
5851 init_waitqueue_head(&instance->int_cmd_wait_q);
5852 init_waitqueue_head(&instance->abort_cmd_wait_q);
5853
5854 spin_lock_init(&instance->mfi_pool_lock);
5855 spin_lock_init(&instance->hba_lock);
5856 spin_lock_init(&instance->completion_lock);
5857
5858 mutex_init(&instance->reset_mutex);
5859 mutex_init(&instance->hba_mutex);
5860
5861 /*
5862 * Initialize PCI related and misc parameters
5863 */
5864 instance->host = host;
5865 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5866 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5867 instance->ctrl_info = NULL;
5868
5869
5870 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5871 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5872 instance->flag_ieee = 1;
5873
5874 megasas_dbg_lvl = 0;
5875 instance->flag = 0;
5876 instance->unload = 1;
5877 instance->last_time = 0;
5878 instance->disableOnlineCtrlReset = 1;
5879 instance->UnevenSpanSupport = 0;
5880
5881 if (instance->ctrl_context) {
5882 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5883 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5884 } else
5885 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5886
5887 /*
5888 * Initialize MFI Firmware
5889 */
5890 if (megasas_init_fw(instance))
5891 goto fail_init_mfi;
5892
5893 if (instance->requestorId) {
5894 if (instance->PlasmaFW111) {
5895 instance->vf_affiliation_111 =
5896 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5897 &instance->vf_affiliation_111_h);
5898 if (!instance->vf_affiliation_111)
5899 dev_warn(&pdev->dev, "Can't allocate "
5900 "memory for VF affiliation buffer\n");
5901 } else {
5902 instance->vf_affiliation =
5903 pci_alloc_consistent(pdev,
5904 (MAX_LOGICAL_DRIVES + 1) *
5905 sizeof(struct MR_LD_VF_AFFILIATION),
5906 &instance->vf_affiliation_h);
5907 if (!instance->vf_affiliation)
5908 dev_warn(&pdev->dev, "Can't allocate "
5909 "memory for VF affiliation buffer\n");
5910 }
5911 }
5912
5913 /*
5914 * Store instance in PCI softstate
5915 */
5916 pci_set_drvdata(pdev, instance);
5917
5918 /*
5919 * Add this controller to megasas_mgmt_info structure so that it
5920 * can be exported to management applications
5921 */
5922 megasas_mgmt_info.count++;
5923 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5924 megasas_mgmt_info.max_index++;
5925
5926 /*
5927 * Register with SCSI mid-layer
5928 */
5929 if (megasas_io_attach(instance))
5930 goto fail_io_attach;
5931
5932 instance->unload = 0;
5933 /*
5934 * Trigger SCSI to scan our drives
5935 */
5936 scsi_scan_host(host);
5937
5938 /*
5939 * Initiate AEN (Asynchronous Event Notification)
5940 */
5941 if (megasas_start_aen(instance)) {
5942 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5943 goto fail_start_aen;
5944 }
5945
5946 /* Get current SR-IOV LD/VF affiliation */
5947 if (instance->requestorId)
5948 megasas_get_ld_vf_affiliation(instance, 1);
5949
5950 return 0;
5951
5952 fail_start_aen:
5953 fail_io_attach:
5954 megasas_mgmt_info.count--;
5955 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5956 megasas_mgmt_info.max_index--;
5957
5958 instance->instancet->disable_intr(instance);
5959 megasas_destroy_irqs(instance);
5960
5961 if (instance->ctrl_context)
5962 megasas_release_fusion(instance);
5963 else
5964 megasas_release_mfi(instance);
5965 if (instance->msix_vectors)
5966 pci_disable_msix(instance->pdev);
5967 fail_init_mfi:
5968 fail_alloc_dma_buf:
5969 if (instance->evt_detail)
5970 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5971 instance->evt_detail,
5972 instance->evt_detail_h);
5973
5974 if (instance->pd_info)
5975 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
5976 instance->pd_info,
5977 instance->pd_info_h);
5978 if (instance->producer)
5979 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5980 instance->producer_h);
5981 if (instance->consumer)
5982 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5983 instance->consumer_h);
5984 scsi_host_put(host);
5985
5986 fail_alloc_instance:
5987 fail_set_dma_mask:
5988 pci_disable_device(pdev);
5989
5990 return -ENODEV;
5991 }
5992
5993 /**
5994 * megasas_flush_cache - Requests FW to flush all its caches
5995 * @instance: Adapter soft state
5996 */
5997 static void megasas_flush_cache(struct megasas_instance *instance)
5998 {
5999 struct megasas_cmd *cmd;
6000 struct megasas_dcmd_frame *dcmd;
6001
6002 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6003 return;
6004
6005 cmd = megasas_get_cmd(instance);
6006
6007 if (!cmd)
6008 return;
6009
6010 dcmd = &cmd->frame->dcmd;
6011
6012 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6013
6014 dcmd->cmd = MFI_CMD_DCMD;
6015 dcmd->cmd_status = 0x0;
6016 dcmd->sge_count = 0;
6017 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6018 dcmd->timeout = 0;
6019 dcmd->pad_0 = 0;
6020 dcmd->data_xfer_len = 0;
6021 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6022 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6023
6024 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6025 != DCMD_SUCCESS) {
6026 dev_err(&instance->pdev->dev,
6027 "return from %s %d\n", __func__, __LINE__);
6028 return;
6029 }
6030
6031 megasas_return_cmd(instance, cmd);
6032 }
6033
6034 /**
6035 * megasas_shutdown_controller - Instructs FW to shutdown the controller
6036 * @instance: Adapter soft state
6037 * @opcode: Shutdown/Hibernate
6038 */
6039 static void megasas_shutdown_controller(struct megasas_instance *instance,
6040 u32 opcode)
6041 {
6042 struct megasas_cmd *cmd;
6043 struct megasas_dcmd_frame *dcmd;
6044
6045 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6046 return;
6047
6048 cmd = megasas_get_cmd(instance);
6049
6050 if (!cmd)
6051 return;
6052
6053 if (instance->aen_cmd)
6054 megasas_issue_blocked_abort_cmd(instance,
6055 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6056 if (instance->map_update_cmd)
6057 megasas_issue_blocked_abort_cmd(instance,
6058 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6059 if (instance->jbod_seq_cmd)
6060 megasas_issue_blocked_abort_cmd(instance,
6061 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6062
6063 dcmd = &cmd->frame->dcmd;
6064
6065 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6066
6067 dcmd->cmd = MFI_CMD_DCMD;
6068 dcmd->cmd_status = 0x0;
6069 dcmd->sge_count = 0;
6070 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6071 dcmd->timeout = 0;
6072 dcmd->pad_0 = 0;
6073 dcmd->data_xfer_len = 0;
6074 dcmd->opcode = cpu_to_le32(opcode);
6075
6076 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6077 != DCMD_SUCCESS) {
6078 dev_err(&instance->pdev->dev,
6079 "return from %s %d\n", __func__, __LINE__);
6080 return;
6081 }
6082
6083 megasas_return_cmd(instance, cmd);
6084 }
6085
6086 #ifdef CONFIG_PM
6087 /**
6088 * megasas_suspend - driver suspend entry point
6089 * @pdev: PCI device structure
6090 * @state: PCI power state to suspend routine
6091 */
6092 static int
6093 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6094 {
6095 struct Scsi_Host *host;
6096 struct megasas_instance *instance;
6097
6098 instance = pci_get_drvdata(pdev);
6099 host = instance->host;
6100 instance->unload = 1;
6101
6102 /* Shutdown SR-IOV heartbeat timer */
6103 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6104 del_timer_sync(&instance->sriov_heartbeat_timer);
6105
6106 megasas_flush_cache(instance);
6107 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6108
6109 /* cancel the delayed work if this work still in queue */
6110 if (instance->ev != NULL) {
6111 struct megasas_aen_event *ev = instance->ev;
6112 cancel_delayed_work_sync(&ev->hotplug_work);
6113 instance->ev = NULL;
6114 }
6115
6116 tasklet_kill(&instance->isr_tasklet);
6117
6118 pci_set_drvdata(instance->pdev, instance);
6119 instance->instancet->disable_intr(instance);
6120
6121 megasas_destroy_irqs(instance);
6122
6123 if (instance->msix_vectors)
6124 pci_disable_msix(instance->pdev);
6125
6126 pci_save_state(pdev);
6127 pci_disable_device(pdev);
6128
6129 pci_set_power_state(pdev, pci_choose_state(pdev, state));
6130
6131 return 0;
6132 }
6133
6134 /**
6135 * megasas_resume- driver resume entry point
6136 * @pdev: PCI device structure
6137 */
6138 static int
6139 megasas_resume(struct pci_dev *pdev)
6140 {
6141 int rval;
6142 struct Scsi_Host *host;
6143 struct megasas_instance *instance;
6144
6145 instance = pci_get_drvdata(pdev);
6146 host = instance->host;
6147 pci_set_power_state(pdev, PCI_D0);
6148 pci_enable_wake(pdev, PCI_D0, 0);
6149 pci_restore_state(pdev);
6150
6151 /*
6152 * PCI prepping: enable device set bus mastering and dma mask
6153 */
6154 rval = pci_enable_device_mem(pdev);
6155
6156 if (rval) {
6157 dev_err(&pdev->dev, "Enable device failed\n");
6158 return rval;
6159 }
6160
6161 pci_set_master(pdev);
6162
6163 if (megasas_set_dma_mask(pdev))
6164 goto fail_set_dma_mask;
6165
6166 /*
6167 * Initialize MFI Firmware
6168 */
6169
6170 atomic_set(&instance->fw_outstanding, 0);
6171
6172 /*
6173 * We expect the FW state to be READY
6174 */
6175 if (megasas_transition_to_ready(instance, 0))
6176 goto fail_ready_state;
6177
6178 /* Now re-enable MSI-X */
6179 if (instance->msix_vectors &&
6180 pci_enable_msix_exact(instance->pdev, instance->msixentry,
6181 instance->msix_vectors))
6182 goto fail_reenable_msix;
6183
6184 if (instance->ctrl_context) {
6185 megasas_reset_reply_desc(instance);
6186 if (megasas_ioc_init_fusion(instance)) {
6187 megasas_free_cmds(instance);
6188 megasas_free_cmds_fusion(instance);
6189 goto fail_init_mfi;
6190 }
6191 if (!megasas_get_map_info(instance))
6192 megasas_sync_map_info(instance);
6193 } else {
6194 *instance->producer = 0;
6195 *instance->consumer = 0;
6196 if (megasas_issue_init_mfi(instance))
6197 goto fail_init_mfi;
6198 }
6199
6200 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6201 (unsigned long)instance);
6202
6203 if (instance->msix_vectors ?
6204 megasas_setup_irqs_msix(instance, 0) :
6205 megasas_setup_irqs_ioapic(instance))
6206 goto fail_init_mfi;
6207
6208 /* Re-launch SR-IOV heartbeat timer */
6209 if (instance->requestorId) {
6210 if (!megasas_sriov_start_heartbeat(instance, 0))
6211 megasas_start_timer(instance,
6212 &instance->sriov_heartbeat_timer,
6213 megasas_sriov_heartbeat_handler,
6214 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
6215 else {
6216 instance->skip_heartbeat_timer_del = 1;
6217 goto fail_init_mfi;
6218 }
6219 }
6220
6221 instance->instancet->enable_intr(instance);
6222 megasas_setup_jbod_map(instance);
6223 instance->unload = 0;
6224
6225 /*
6226 * Initiate AEN (Asynchronous Event Notification)
6227 */
6228 if (megasas_start_aen(instance))
6229 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6230
6231 return 0;
6232
6233 fail_init_mfi:
6234 if (instance->evt_detail)
6235 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6236 instance->evt_detail,
6237 instance->evt_detail_h);
6238
6239 if (instance->pd_info)
6240 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6241 instance->pd_info,
6242 instance->pd_info_h);
6243 if (instance->producer)
6244 pci_free_consistent(pdev, sizeof(u32), instance->producer,
6245 instance->producer_h);
6246 if (instance->consumer)
6247 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
6248 instance->consumer_h);
6249 scsi_host_put(host);
6250
6251 fail_set_dma_mask:
6252 fail_ready_state:
6253 fail_reenable_msix:
6254
6255 pci_disable_device(pdev);
6256
6257 return -ENODEV;
6258 }
6259 #else
6260 #define megasas_suspend NULL
6261 #define megasas_resume NULL
6262 #endif
6263
6264 /**
6265 * megasas_detach_one - PCI hot"un"plug entry point
6266 * @pdev: PCI device structure
6267 */
6268 static void megasas_detach_one(struct pci_dev *pdev)
6269 {
6270 int i;
6271 struct Scsi_Host *host;
6272 struct megasas_instance *instance;
6273 struct fusion_context *fusion;
6274 u32 pd_seq_map_sz;
6275
6276 instance = pci_get_drvdata(pdev);
6277 instance->unload = 1;
6278 host = instance->host;
6279 fusion = instance->ctrl_context;
6280
6281 /* Shutdown SR-IOV heartbeat timer */
6282 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6283 del_timer_sync(&instance->sriov_heartbeat_timer);
6284
6285 if (instance->fw_crash_state != UNAVAILABLE)
6286 megasas_free_host_crash_buffer(instance);
6287 scsi_remove_host(instance->host);
6288 megasas_flush_cache(instance);
6289 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6290
6291 /* cancel the delayed work if this work still in queue*/
6292 if (instance->ev != NULL) {
6293 struct megasas_aen_event *ev = instance->ev;
6294 cancel_delayed_work_sync(&ev->hotplug_work);
6295 instance->ev = NULL;
6296 }
6297
6298 /* cancel all wait events */
6299 wake_up_all(&instance->int_cmd_wait_q);
6300
6301 tasklet_kill(&instance->isr_tasklet);
6302
6303 /*
6304 * Take the instance off the instance array. Note that we will not
6305 * decrement the max_index. We let this array be sparse array
6306 */
6307 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6308 if (megasas_mgmt_info.instance[i] == instance) {
6309 megasas_mgmt_info.count--;
6310 megasas_mgmt_info.instance[i] = NULL;
6311
6312 break;
6313 }
6314 }
6315
6316 instance->instancet->disable_intr(instance);
6317
6318 megasas_destroy_irqs(instance);
6319
6320 if (instance->msix_vectors)
6321 pci_disable_msix(instance->pdev);
6322
6323 if (instance->ctrl_context) {
6324 megasas_release_fusion(instance);
6325 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6326 (sizeof(struct MR_PD_CFG_SEQ) *
6327 (MAX_PHYSICAL_DEVICES - 1));
6328 for (i = 0; i < 2 ; i++) {
6329 if (fusion->ld_map[i])
6330 dma_free_coherent(&instance->pdev->dev,
6331 fusion->max_map_sz,
6332 fusion->ld_map[i],
6333 fusion->ld_map_phys[i]);
6334 if (fusion->ld_drv_map[i])
6335 free_pages((ulong)fusion->ld_drv_map[i],
6336 fusion->drv_map_pages);
6337 if (fusion->pd_seq_sync[i])
6338 dma_free_coherent(&instance->pdev->dev,
6339 pd_seq_map_sz,
6340 fusion->pd_seq_sync[i],
6341 fusion->pd_seq_phys[i]);
6342 }
6343 free_pages((ulong)instance->ctrl_context,
6344 instance->ctrl_context_pages);
6345 } else {
6346 megasas_release_mfi(instance);
6347 pci_free_consistent(pdev, sizeof(u32),
6348 instance->producer,
6349 instance->producer_h);
6350 pci_free_consistent(pdev, sizeof(u32),
6351 instance->consumer,
6352 instance->consumer_h);
6353 }
6354
6355 kfree(instance->ctrl_info);
6356
6357 if (instance->evt_detail)
6358 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6359 instance->evt_detail, instance->evt_detail_h);
6360
6361 if (instance->pd_info)
6362 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6363 instance->pd_info,
6364 instance->pd_info_h);
6365 if (instance->vf_affiliation)
6366 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6367 sizeof(struct MR_LD_VF_AFFILIATION),
6368 instance->vf_affiliation,
6369 instance->vf_affiliation_h);
6370
6371 if (instance->vf_affiliation_111)
6372 pci_free_consistent(pdev,
6373 sizeof(struct MR_LD_VF_AFFILIATION_111),
6374 instance->vf_affiliation_111,
6375 instance->vf_affiliation_111_h);
6376
6377 if (instance->hb_host_mem)
6378 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
6379 instance->hb_host_mem,
6380 instance->hb_host_mem_h);
6381
6382 if (instance->crash_dump_buf)
6383 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6384 instance->crash_dump_buf, instance->crash_dump_h);
6385
6386 if (instance->system_info_buf)
6387 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6388 instance->system_info_buf, instance->system_info_h);
6389
6390 scsi_host_put(host);
6391
6392 pci_disable_device(pdev);
6393 }
6394
6395 /**
6396 * megasas_shutdown - Shutdown entry point
6397 * @device: Generic device structure
6398 */
6399 static void megasas_shutdown(struct pci_dev *pdev)
6400 {
6401 struct megasas_instance *instance = pci_get_drvdata(pdev);
6402
6403 instance->unload = 1;
6404 megasas_flush_cache(instance);
6405 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6406 instance->instancet->disable_intr(instance);
6407 megasas_destroy_irqs(instance);
6408
6409 if (instance->msix_vectors)
6410 pci_disable_msix(instance->pdev);
6411 }
6412
6413 /**
6414 * megasas_mgmt_open - char node "open" entry point
6415 */
6416 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
6417 {
6418 /*
6419 * Allow only those users with admin rights
6420 */
6421 if (!capable(CAP_SYS_ADMIN))
6422 return -EACCES;
6423
6424 return 0;
6425 }
6426
6427 /**
6428 * megasas_mgmt_fasync - Async notifier registration from applications
6429 *
6430 * This function adds the calling process to a driver global queue. When an
6431 * event occurs, SIGIO will be sent to all processes in this queue.
6432 */
6433 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
6434 {
6435 int rc;
6436
6437 mutex_lock(&megasas_async_queue_mutex);
6438
6439 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
6440
6441 mutex_unlock(&megasas_async_queue_mutex);
6442
6443 if (rc >= 0) {
6444 /* For sanity check when we get ioctl */
6445 filep->private_data = filep;
6446 return 0;
6447 }
6448
6449 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
6450
6451 return rc;
6452 }
6453
6454 /**
6455 * megasas_mgmt_poll - char node "poll" entry point
6456 * */
6457 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
6458 {
6459 unsigned int mask;
6460 unsigned long flags;
6461
6462 poll_wait(file, &megasas_poll_wait, wait);
6463 spin_lock_irqsave(&poll_aen_lock, flags);
6464 if (megasas_poll_wait_aen)
6465 mask = (POLLIN | POLLRDNORM);
6466 else
6467 mask = 0;
6468 megasas_poll_wait_aen = 0;
6469 spin_unlock_irqrestore(&poll_aen_lock, flags);
6470 return mask;
6471 }
6472
6473 /*
6474 * megasas_set_crash_dump_params_ioctl:
6475 * Send CRASH_DUMP_MODE DCMD to all controllers
6476 * @cmd: MFI command frame
6477 */
6478
6479 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6480 {
6481 struct megasas_instance *local_instance;
6482 int i, error = 0;
6483 int crash_support;
6484
6485 crash_support = cmd->frame->dcmd.mbox.w[0];
6486
6487 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6488 local_instance = megasas_mgmt_info.instance[i];
6489 if (local_instance && local_instance->crash_dump_drv_support) {
6490 if ((atomic_read(&local_instance->adprecovery) ==
6491 MEGASAS_HBA_OPERATIONAL) &&
6492 !megasas_set_crash_dump_params(local_instance,
6493 crash_support)) {
6494 local_instance->crash_dump_app_support =
6495 crash_support;
6496 dev_info(&local_instance->pdev->dev,
6497 "Application firmware crash "
6498 "dump mode set success\n");
6499 error = 0;
6500 } else {
6501 dev_info(&local_instance->pdev->dev,
6502 "Application firmware crash "
6503 "dump mode set failed\n");
6504 error = -1;
6505 }
6506 }
6507 }
6508 return error;
6509 }
6510
6511 /**
6512 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
6513 * @instance: Adapter soft state
6514 * @argp: User's ioctl packet
6515 */
6516 static int
6517 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6518 struct megasas_iocpacket __user * user_ioc,
6519 struct megasas_iocpacket *ioc)
6520 {
6521 struct megasas_sge32 *kern_sge32;
6522 struct megasas_cmd *cmd;
6523 void *kbuff_arr[MAX_IOCTL_SGE];
6524 dma_addr_t buf_handle = 0;
6525 int error = 0, i;
6526 void *sense = NULL;
6527 dma_addr_t sense_handle;
6528 unsigned long *sense_ptr;
6529
6530 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6531
6532 if (ioc->sge_count > MAX_IOCTL_SGE) {
6533 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
6534 ioc->sge_count, MAX_IOCTL_SGE);
6535 return -EINVAL;
6536 }
6537
6538 cmd = megasas_get_cmd(instance);
6539 if (!cmd) {
6540 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6541 return -ENOMEM;
6542 }
6543
6544 /*
6545 * User's IOCTL packet has 2 frames (maximum). Copy those two
6546 * frames into our cmd's frames. cmd->frame's context will get
6547 * overwritten when we copy from user's frames. So set that value
6548 * alone separately
6549 */
6550 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6551 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6552 cmd->frame->hdr.pad_0 = 0;
6553 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6554 MFI_FRAME_SGL64 |
6555 MFI_FRAME_SENSE64));
6556
6557 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6558 error = megasas_set_crash_dump_params_ioctl(cmd);
6559 megasas_return_cmd(instance, cmd);
6560 return error;
6561 }
6562
6563 /*
6564 * The management interface between applications and the fw uses
6565 * MFI frames. E.g, RAID configuration changes, LD property changes
6566 * etc are accomplishes through different kinds of MFI frames. The
6567 * driver needs to care only about substituting user buffers with
6568 * kernel buffers in SGLs. The location of SGL is embedded in the
6569 * struct iocpacket itself.
6570 */
6571 kern_sge32 = (struct megasas_sge32 *)
6572 ((unsigned long)cmd->frame + ioc->sgl_off);
6573
6574 /*
6575 * For each user buffer, create a mirror buffer and copy in
6576 */
6577 for (i = 0; i < ioc->sge_count; i++) {
6578 if (!ioc->sgl[i].iov_len)
6579 continue;
6580
6581 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6582 ioc->sgl[i].iov_len,
6583 &buf_handle, GFP_KERNEL);
6584 if (!kbuff_arr[i]) {
6585 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
6586 "kernel SGL buffer for IOCTL\n");
6587 error = -ENOMEM;
6588 goto out;
6589 }
6590
6591 /*
6592 * We don't change the dma_coherent_mask, so
6593 * pci_alloc_consistent only returns 32bit addresses
6594 */
6595 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6596 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6597
6598 /*
6599 * We created a kernel buffer corresponding to the
6600 * user buffer. Now copy in from the user buffer
6601 */
6602 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6603 (u32) (ioc->sgl[i].iov_len))) {
6604 error = -EFAULT;
6605 goto out;
6606 }
6607 }
6608
6609 if (ioc->sense_len) {
6610 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6611 &sense_handle, GFP_KERNEL);
6612 if (!sense) {
6613 error = -ENOMEM;
6614 goto out;
6615 }
6616
6617 sense_ptr =
6618 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6619 *sense_ptr = cpu_to_le32(sense_handle);
6620 }
6621
6622 /*
6623 * Set the sync_cmd flag so that the ISR knows not to complete this
6624 * cmd to the SCSI mid-layer
6625 */
6626 cmd->sync_cmd = 1;
6627 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
6628 cmd->sync_cmd = 0;
6629 dev_err(&instance->pdev->dev,
6630 "return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n",
6631 __func__, __LINE__, cmd->frame->dcmd.opcode,
6632 cmd->cmd_status_drv);
6633 return -EBUSY;
6634 }
6635
6636 cmd->sync_cmd = 0;
6637
6638 if (instance->unload == 1) {
6639 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6640 "don't submit data to application\n");
6641 goto out;
6642 }
6643 /*
6644 * copy out the kernel buffers to user buffers
6645 */
6646 for (i = 0; i < ioc->sge_count; i++) {
6647 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6648 ioc->sgl[i].iov_len)) {
6649 error = -EFAULT;
6650 goto out;
6651 }
6652 }
6653
6654 /*
6655 * copy out the sense
6656 */
6657 if (ioc->sense_len) {
6658 /*
6659 * sense_ptr points to the location that has the user
6660 * sense buffer address
6661 */
6662 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6663 ioc->sense_off);
6664
6665 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6666 sense, ioc->sense_len)) {
6667 dev_err(&instance->pdev->dev, "Failed to copy out to user "
6668 "sense data\n");
6669 error = -EFAULT;
6670 goto out;
6671 }
6672 }
6673
6674 /*
6675 * copy the status codes returned by the fw
6676 */
6677 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6678 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6679 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6680 error = -EFAULT;
6681 }
6682
6683 out:
6684 if (sense) {
6685 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6686 sense, sense_handle);
6687 }
6688
6689 for (i = 0; i < ioc->sge_count; i++) {
6690 if (kbuff_arr[i]) {
6691 dma_free_coherent(&instance->pdev->dev,
6692 le32_to_cpu(kern_sge32[i].length),
6693 kbuff_arr[i],
6694 le32_to_cpu(kern_sge32[i].phys_addr));
6695 kbuff_arr[i] = NULL;
6696 }
6697 }
6698
6699 megasas_return_cmd(instance, cmd);
6700 return error;
6701 }
6702
6703 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6704 {
6705 struct megasas_iocpacket __user *user_ioc =
6706 (struct megasas_iocpacket __user *)arg;
6707 struct megasas_iocpacket *ioc;
6708 struct megasas_instance *instance;
6709 int error;
6710 int i;
6711 unsigned long flags;
6712 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6713
6714 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6715 if (!ioc)
6716 return -ENOMEM;
6717
6718 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6719 error = -EFAULT;
6720 goto out_kfree_ioc;
6721 }
6722
6723 instance = megasas_lookup_instance(ioc->host_no);
6724 if (!instance) {
6725 error = -ENODEV;
6726 goto out_kfree_ioc;
6727 }
6728
6729 /* Adjust ioctl wait time for VF mode */
6730 if (instance->requestorId)
6731 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6732
6733 /* Block ioctls in VF mode */
6734 if (instance->requestorId && !allow_vf_ioctls) {
6735 error = -ENODEV;
6736 goto out_kfree_ioc;
6737 }
6738
6739 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6740 dev_err(&instance->pdev->dev, "Controller in crit error\n");
6741 error = -ENODEV;
6742 goto out_kfree_ioc;
6743 }
6744
6745 if (instance->unload == 1) {
6746 error = -ENODEV;
6747 goto out_kfree_ioc;
6748 }
6749
6750 if (down_interruptible(&instance->ioctl_sem)) {
6751 error = -ERESTARTSYS;
6752 goto out_kfree_ioc;
6753 }
6754
6755 for (i = 0; i < wait_time; i++) {
6756
6757 spin_lock_irqsave(&instance->hba_lock, flags);
6758 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6759 spin_unlock_irqrestore(&instance->hba_lock, flags);
6760 break;
6761 }
6762 spin_unlock_irqrestore(&instance->hba_lock, flags);
6763
6764 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6765 dev_notice(&instance->pdev->dev, "waiting"
6766 "for controller reset to finish\n");
6767 }
6768
6769 msleep(1000);
6770 }
6771
6772 spin_lock_irqsave(&instance->hba_lock, flags);
6773 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6774 spin_unlock_irqrestore(&instance->hba_lock, flags);
6775
6776 dev_err(&instance->pdev->dev, "timed out while"
6777 "waiting for HBA to recover\n");
6778 error = -ENODEV;
6779 goto out_up;
6780 }
6781 spin_unlock_irqrestore(&instance->hba_lock, flags);
6782
6783 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6784 out_up:
6785 up(&instance->ioctl_sem);
6786
6787 out_kfree_ioc:
6788 kfree(ioc);
6789 return error;
6790 }
6791
6792 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6793 {
6794 struct megasas_instance *instance;
6795 struct megasas_aen aen;
6796 int error;
6797 int i;
6798 unsigned long flags;
6799 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6800
6801 if (file->private_data != file) {
6802 printk(KERN_DEBUG "megasas: fasync_helper was not "
6803 "called first\n");
6804 return -EINVAL;
6805 }
6806
6807 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6808 return -EFAULT;
6809
6810 instance = megasas_lookup_instance(aen.host_no);
6811
6812 if (!instance)
6813 return -ENODEV;
6814
6815 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6816 return -ENODEV;
6817 }
6818
6819 if (instance->unload == 1) {
6820 return -ENODEV;
6821 }
6822
6823 for (i = 0; i < wait_time; i++) {
6824
6825 spin_lock_irqsave(&instance->hba_lock, flags);
6826 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6827 spin_unlock_irqrestore(&instance->hba_lock,
6828 flags);
6829 break;
6830 }
6831
6832 spin_unlock_irqrestore(&instance->hba_lock, flags);
6833
6834 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6835 dev_notice(&instance->pdev->dev, "waiting for"
6836 "controller reset to finish\n");
6837 }
6838
6839 msleep(1000);
6840 }
6841
6842 spin_lock_irqsave(&instance->hba_lock, flags);
6843 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6844 spin_unlock_irqrestore(&instance->hba_lock, flags);
6845 dev_err(&instance->pdev->dev, "timed out while waiting"
6846 "for HBA to recover\n");
6847 return -ENODEV;
6848 }
6849 spin_unlock_irqrestore(&instance->hba_lock, flags);
6850
6851 mutex_lock(&instance->reset_mutex);
6852 error = megasas_register_aen(instance, aen.seq_num,
6853 aen.class_locale_word);
6854 mutex_unlock(&instance->reset_mutex);
6855 return error;
6856 }
6857
6858 /**
6859 * megasas_mgmt_ioctl - char node ioctl entry point
6860 */
6861 static long
6862 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6863 {
6864 switch (cmd) {
6865 case MEGASAS_IOC_FIRMWARE:
6866 return megasas_mgmt_ioctl_fw(file, arg);
6867
6868 case MEGASAS_IOC_GET_AEN:
6869 return megasas_mgmt_ioctl_aen(file, arg);
6870 }
6871
6872 return -ENOTTY;
6873 }
6874
6875 #ifdef CONFIG_COMPAT
6876 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6877 {
6878 struct compat_megasas_iocpacket __user *cioc =
6879 (struct compat_megasas_iocpacket __user *)arg;
6880 struct megasas_iocpacket __user *ioc =
6881 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6882 int i;
6883 int error = 0;
6884 compat_uptr_t ptr;
6885 u32 local_sense_off;
6886 u32 local_sense_len;
6887 u32 user_sense_off;
6888
6889 if (clear_user(ioc, sizeof(*ioc)))
6890 return -EFAULT;
6891
6892 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6893 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6894 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6895 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6896 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6897 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6898 return -EFAULT;
6899
6900 /*
6901 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6902 * sense_len is not null, so prepare the 64bit value under
6903 * the same condition.
6904 */
6905 if (get_user(local_sense_off, &ioc->sense_off) ||
6906 get_user(local_sense_len, &ioc->sense_len) ||
6907 get_user(user_sense_off, &cioc->sense_off))
6908 return -EFAULT;
6909
6910 if (local_sense_len) {
6911 void __user **sense_ioc_ptr =
6912 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
6913 compat_uptr_t *sense_cioc_ptr =
6914 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
6915 if (get_user(ptr, sense_cioc_ptr) ||
6916 put_user(compat_ptr(ptr), sense_ioc_ptr))
6917 return -EFAULT;
6918 }
6919
6920 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6921 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6922 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6923 copy_in_user(&ioc->sgl[i].iov_len,
6924 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6925 return -EFAULT;
6926 }
6927
6928 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6929
6930 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6931 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6932 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6933 return -EFAULT;
6934 }
6935 return error;
6936 }
6937
6938 static long
6939 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6940 unsigned long arg)
6941 {
6942 switch (cmd) {
6943 case MEGASAS_IOC_FIRMWARE32:
6944 return megasas_mgmt_compat_ioctl_fw(file, arg);
6945 case MEGASAS_IOC_GET_AEN:
6946 return megasas_mgmt_ioctl_aen(file, arg);
6947 }
6948
6949 return -ENOTTY;
6950 }
6951 #endif
6952
6953 /*
6954 * File operations structure for management interface
6955 */
6956 static const struct file_operations megasas_mgmt_fops = {
6957 .owner = THIS_MODULE,
6958 .open = megasas_mgmt_open,
6959 .fasync = megasas_mgmt_fasync,
6960 .unlocked_ioctl = megasas_mgmt_ioctl,
6961 .poll = megasas_mgmt_poll,
6962 #ifdef CONFIG_COMPAT
6963 .compat_ioctl = megasas_mgmt_compat_ioctl,
6964 #endif
6965 .llseek = noop_llseek,
6966 };
6967
6968 /*
6969 * PCI hotplug support registration structure
6970 */
6971 static struct pci_driver megasas_pci_driver = {
6972
6973 .name = "megaraid_sas",
6974 .id_table = megasas_pci_table,
6975 .probe = megasas_probe_one,
6976 .remove = megasas_detach_one,
6977 .suspend = megasas_suspend,
6978 .resume = megasas_resume,
6979 .shutdown = megasas_shutdown,
6980 };
6981
6982 /*
6983 * Sysfs driver attributes
6984 */
6985 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6986 {
6987 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6988 MEGASAS_VERSION);
6989 }
6990
6991 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6992
6993 static ssize_t
6994 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6995 {
6996 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6997 MEGASAS_RELDATE);
6998 }
6999
7000 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);
7001
7002 static ssize_t
7003 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
7004 {
7005 return sprintf(buf, "%u\n", support_poll_for_event);
7006 }
7007
7008 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
7009 megasas_sysfs_show_support_poll_for_event, NULL);
7010
7011 static ssize_t
7012 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
7013 {
7014 return sprintf(buf, "%u\n", support_device_change);
7015 }
7016
7017 static DRIVER_ATTR(support_device_change, S_IRUGO,
7018 megasas_sysfs_show_support_device_change, NULL);
7019
7020 static ssize_t
7021 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
7022 {
7023 return sprintf(buf, "%u\n", megasas_dbg_lvl);
7024 }
7025
7026 static ssize_t
7027 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
7028 {
7029 int retval = count;
7030
7031 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
7032 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
7033 retval = -EINVAL;
7034 }
7035 return retval;
7036 }
7037
7038 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
7039 megasas_sysfs_set_dbg_lvl);
7040
7041 static void
7042 megasas_aen_polling(struct work_struct *work)
7043 {
7044 struct megasas_aen_event *ev =
7045 container_of(work, struct megasas_aen_event, hotplug_work.work);
7046 struct megasas_instance *instance = ev->instance;
7047 union megasas_evt_class_locale class_locale;
7048 struct Scsi_Host *host;
7049 struct scsi_device *sdev1;
7050 u16 pd_index = 0;
7051 u16 ld_index = 0;
7052 int i, j, doscan = 0;
7053 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7054 int error;
7055 u8 dcmd_ret = DCMD_SUCCESS;
7056
7057 if (!instance) {
7058 printk(KERN_ERR "invalid instance!\n");
7059 kfree(ev);
7060 return;
7061 }
7062
7063 /* Adjust event workqueue thread wait time for VF mode */
7064 if (instance->requestorId)
7065 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
7066
7067 /* Don't run the event workqueue thread if OCR is running */
7068 mutex_lock(&instance->reset_mutex);
7069
7070 instance->ev = NULL;
7071 host = instance->host;
7072 if (instance->evt_detail) {
7073 megasas_decode_evt(instance);
7074
7075 switch (le32_to_cpu(instance->evt_detail->code)) {
7076
7077 case MR_EVT_PD_INSERTED:
7078 case MR_EVT_PD_REMOVED:
7079 dcmd_ret = megasas_get_pd_list(instance);
7080 if (dcmd_ret == DCMD_SUCCESS)
7081 doscan = SCAN_PD_CHANNEL;
7082 break;
7083
7084 case MR_EVT_LD_OFFLINE:
7085 case MR_EVT_CFG_CLEARED:
7086 case MR_EVT_LD_DELETED:
7087 case MR_EVT_LD_CREATED:
7088 if (!instance->requestorId ||
7089 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7090 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7091
7092 if (dcmd_ret == DCMD_SUCCESS)
7093 doscan = SCAN_VD_CHANNEL;
7094
7095 break;
7096
7097 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7098 case MR_EVT_FOREIGN_CFG_IMPORTED:
7099 case MR_EVT_LD_STATE_CHANGE:
7100 dcmd_ret = megasas_get_pd_list(instance);
7101
7102 if (dcmd_ret != DCMD_SUCCESS)
7103 break;
7104
7105 if (!instance->requestorId ||
7106 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7107 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7108
7109 if (dcmd_ret != DCMD_SUCCESS)
7110 break;
7111
7112 doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
7113 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
7114 instance->host->host_no);
7115 break;
7116
7117 case MR_EVT_CTRL_PROP_CHANGED:
7118 dcmd_ret = megasas_get_ctrl_info(instance);
7119 break;
7120 default:
7121 doscan = 0;
7122 break;
7123 }
7124 } else {
7125 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7126 mutex_unlock(&instance->reset_mutex);
7127 kfree(ev);
7128 return;
7129 }
7130
7131 mutex_unlock(&instance->reset_mutex);
7132
7133 if (doscan & SCAN_PD_CHANNEL) {
7134 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
7135 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7136 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
7137 sdev1 = scsi_device_lookup(host, i, j, 0);
7138 if (instance->pd_list[pd_index].driveState ==
7139 MR_PD_STATE_SYSTEM) {
7140 if (!sdev1)
7141 scsi_add_device(host, i, j, 0);
7142 else
7143 scsi_device_put(sdev1);
7144 } else {
7145 if (sdev1) {
7146 scsi_remove_device(sdev1);
7147 scsi_device_put(sdev1);
7148 }
7149 }
7150 }
7151 }
7152 }
7153
7154 if (doscan & SCAN_VD_CHANNEL) {
7155 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
7156 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7157 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
7158 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7159 if (instance->ld_ids[ld_index] != 0xff) {
7160 if (!sdev1)
7161 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7162 else
7163 scsi_device_put(sdev1);
7164 } else {
7165 if (sdev1) {
7166 scsi_remove_device(sdev1);
7167 scsi_device_put(sdev1);
7168 }
7169 }
7170 }
7171 }
7172 }
7173
7174 if (dcmd_ret == DCMD_SUCCESS)
7175 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7176 else
7177 seq_num = instance->last_seq_num;
7178
7179 /* Register AEN with FW for latest sequence number plus 1 */
7180 class_locale.members.reserved = 0;
7181 class_locale.members.locale = MR_EVT_LOCALE_ALL;
7182 class_locale.members.class = MR_EVT_CLASS_DEBUG;
7183
7184 if (instance->aen_cmd != NULL) {
7185 kfree(ev);
7186 return;
7187 }
7188
7189 mutex_lock(&instance->reset_mutex);
7190 error = megasas_register_aen(instance, seq_num,
7191 class_locale.word);
7192 if (error)
7193 dev_err(&instance->pdev->dev,
7194 "register aen failed error %x\n", error);
7195
7196 mutex_unlock(&instance->reset_mutex);
7197 kfree(ev);
7198 }
7199
7200 /**
7201 * megasas_init - Driver load entry point
7202 */
7203 static int __init megasas_init(void)
7204 {
7205 int rval;
7206
7207 /*
7208 * Booted in kdump kernel, minimize memory footprints by
7209 * disabling few features
7210 */
7211 if (reset_devices) {
7212 msix_vectors = 1;
7213 rdpq_enable = 0;
7214 dual_qdepth_disable = 1;
7215 }
7216
7217 /*
7218 * Announce driver version and other information
7219 */
7220 pr_info("megasas: %s\n", MEGASAS_VERSION);
7221
7222 spin_lock_init(&poll_aen_lock);
7223
7224 support_poll_for_event = 2;
7225 support_device_change = 1;
7226
7227 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
7228
7229 /*
7230 * Register character device node
7231 */
7232 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
7233
7234 if (rval < 0) {
7235 printk(KERN_DEBUG "megasas: failed to open device node\n");
7236 return rval;
7237 }
7238
7239 megasas_mgmt_majorno = rval;
7240
7241 /*
7242 * Register ourselves as PCI hotplug module
7243 */
7244 rval = pci_register_driver(&megasas_pci_driver);
7245
7246 if (rval) {
7247 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7248 goto err_pcidrv;
7249 }
7250
7251 rval = driver_create_file(&megasas_pci_driver.driver,
7252 &driver_attr_version);
7253 if (rval)
7254 goto err_dcf_attr_ver;
7255
7256 rval = driver_create_file(&megasas_pci_driver.driver,
7257 &driver_attr_release_date);
7258 if (rval)
7259 goto err_dcf_rel_date;
7260
7261 rval = driver_create_file(&megasas_pci_driver.driver,
7262 &driver_attr_support_poll_for_event);
7263 if (rval)
7264 goto err_dcf_support_poll_for_event;
7265
7266 rval = driver_create_file(&megasas_pci_driver.driver,
7267 &driver_attr_dbg_lvl);
7268 if (rval)
7269 goto err_dcf_dbg_lvl;
7270 rval = driver_create_file(&megasas_pci_driver.driver,
7271 &driver_attr_support_device_change);
7272 if (rval)
7273 goto err_dcf_support_device_change;
7274
7275 return rval;
7276
7277 err_dcf_support_device_change:
7278 driver_remove_file(&megasas_pci_driver.driver,
7279 &driver_attr_dbg_lvl);
7280 err_dcf_dbg_lvl:
7281 driver_remove_file(&megasas_pci_driver.driver,
7282 &driver_attr_support_poll_for_event);
7283 err_dcf_support_poll_for_event:
7284 driver_remove_file(&megasas_pci_driver.driver,
7285 &driver_attr_release_date);
7286 err_dcf_rel_date:
7287 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7288 err_dcf_attr_ver:
7289 pci_unregister_driver(&megasas_pci_driver);
7290 err_pcidrv:
7291 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7292 return rval;
7293 }
7294
7295 /**
7296 * megasas_exit - Driver unload entry point
7297 */
7298 static void __exit megasas_exit(void)
7299 {
7300 driver_remove_file(&megasas_pci_driver.driver,
7301 &driver_attr_dbg_lvl);
7302 driver_remove_file(&megasas_pci_driver.driver,
7303 &driver_attr_support_poll_for_event);
7304 driver_remove_file(&megasas_pci_driver.driver,
7305 &driver_attr_support_device_change);
7306 driver_remove_file(&megasas_pci_driver.driver,
7307 &driver_attr_release_date);
7308 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7309
7310 pci_unregister_driver(&megasas_pci_driver);
7311 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7312 }
7313
7314 module_init(megasas_init);
7315 module_exit(megasas_exit);
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