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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livep...
[mirror_ubuntu-zesty-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 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 MODULE_LICENSE("GPL");
96 MODULE_VERSION(MEGASAS_VERSION);
97 MODULE_AUTHOR("megaraidlinux@lsi.com");
98 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
99
100 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
101 static int megasas_get_pd_list(struct megasas_instance *instance);
102 static int megasas_ld_list_query(struct megasas_instance *instance,
103 u8 query_type);
104 static int megasas_issue_init_mfi(struct megasas_instance *instance);
105 static int megasas_register_aen(struct megasas_instance *instance,
106 u32 seq_num, u32 class_locale_word);
107 /*
108 * PCI ID table for all supported controllers
109 */
110 static struct pci_device_id megasas_pci_table[] = {
111
112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
113 /* xscale IOP */
114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
115 /* ppc IOP */
116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
117 /* ppc IOP */
118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
119 /* gen2*/
120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
121 /* gen2*/
122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
123 /* skinny*/
124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
125 /* skinny*/
126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
127 /* xscale IOP, vega */
128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
129 /* xscale IOP */
130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
131 /* Fusion */
132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
133 /* Plasma */
134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
135 /* Invader */
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
137 /* Fury */
138 {}
139 };
140
141 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
142
143 static int megasas_mgmt_majorno;
144 struct megasas_mgmt_info megasas_mgmt_info;
145 static struct fasync_struct *megasas_async_queue;
146 static DEFINE_MUTEX(megasas_async_queue_mutex);
147
148 static int megasas_poll_wait_aen;
149 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
150 static u32 support_poll_for_event;
151 u32 megasas_dbg_lvl;
152 static u32 support_device_change;
153
154 /* define lock for aen poll */
155 spinlock_t poll_aen_lock;
156
157 void
158 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
159 u8 alt_status);
160 static u32
161 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
162 static int
163 megasas_adp_reset_gen2(struct megasas_instance *instance,
164 struct megasas_register_set __iomem *reg_set);
165 static irqreturn_t megasas_isr(int irq, void *devp);
166 static u32
167 megasas_init_adapter_mfi(struct megasas_instance *instance);
168 u32
169 megasas_build_and_issue_cmd(struct megasas_instance *instance,
170 struct scsi_cmnd *scmd);
171 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
172 void
173 megasas_release_fusion(struct megasas_instance *instance);
174 int
175 megasas_ioc_init_fusion(struct megasas_instance *instance);
176 void
177 megasas_free_cmds_fusion(struct megasas_instance *instance);
178 u8
179 megasas_get_map_info(struct megasas_instance *instance);
180 int
181 megasas_sync_map_info(struct megasas_instance *instance);
182 int
183 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
184 int seconds);
185 void megasas_reset_reply_desc(struct megasas_instance *instance);
186 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
187 void megasas_fusion_ocr_wq(struct work_struct *work);
188 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
189 int initial);
190 int megasas_check_mpio_paths(struct megasas_instance *instance,
191 struct scsi_cmnd *scmd);
192
193 void
194 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
195 {
196 instance->instancet->fire_cmd(instance,
197 cmd->frame_phys_addr, 0, instance->reg_set);
198 }
199
200 /**
201 * megasas_get_cmd - Get a command from the free pool
202 * @instance: Adapter soft state
203 *
204 * Returns a free command from the pool
205 */
206 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
207 *instance)
208 {
209 unsigned long flags;
210 struct megasas_cmd *cmd = NULL;
211
212 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
213
214 if (!list_empty(&instance->cmd_pool)) {
215 cmd = list_entry((&instance->cmd_pool)->next,
216 struct megasas_cmd, list);
217 list_del_init(&cmd->list);
218 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED);
219 } else {
220 printk(KERN_ERR "megasas: Command pool empty!\n");
221 }
222
223 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
224 return cmd;
225 }
226
227 /**
228 * __megasas_return_cmd - Return a cmd to free command pool
229 * @instance: Adapter soft state
230 * @cmd: Command packet to be returned to free command pool
231 */
232 inline void
233 __megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
234 {
235 /*
236 * Don't go ahead and free the MFI frame, if corresponding
237 * MPT frame is not freed(valid for only fusion adapters).
238 * In case of MFI adapters, anyways for any allocated MFI
239 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED
240 */
241 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED)
242 return;
243
244 cmd->scmd = NULL;
245 cmd->frame_count = 0;
246 cmd->is_wait_event = 0;
247 cmd->mpt_pthr_cmd_blocked = NULL;
248
249 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
250 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
251 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
252 (reset_devices))
253 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
254
255 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
256 list_add(&cmd->list, (&instance->cmd_pool)->next);
257 }
258
259 /**
260 * megasas_return_cmd - Return a cmd to free command pool
261 * @instance: Adapter soft state
262 * @cmd: Command packet to be returned to free command pool
263 */
264 inline void
265 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
266 {
267 unsigned long flags;
268
269 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
270 __megasas_return_cmd(instance, cmd);
271 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
272 }
273
274
275 /**
276 * The following functions are defined for xscale
277 * (deviceid : 1064R, PERC5) controllers
278 */
279
280 /**
281 * megasas_enable_intr_xscale - Enables interrupts
282 * @regs: MFI register set
283 */
284 static inline void
285 megasas_enable_intr_xscale(struct megasas_instance *instance)
286 {
287 struct megasas_register_set __iomem *regs;
288 regs = instance->reg_set;
289 writel(0, &(regs)->outbound_intr_mask);
290
291 /* Dummy readl to force pci flush */
292 readl(&regs->outbound_intr_mask);
293 }
294
295 /**
296 * megasas_disable_intr_xscale -Disables interrupt
297 * @regs: MFI register set
298 */
299 static inline void
300 megasas_disable_intr_xscale(struct megasas_instance *instance)
301 {
302 struct megasas_register_set __iomem *regs;
303 u32 mask = 0x1f;
304 regs = instance->reg_set;
305 writel(mask, &regs->outbound_intr_mask);
306 /* Dummy readl to force pci flush */
307 readl(&regs->outbound_intr_mask);
308 }
309
310 /**
311 * megasas_read_fw_status_reg_xscale - returns the current FW status value
312 * @regs: MFI register set
313 */
314 static u32
315 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
316 {
317 return readl(&(regs)->outbound_msg_0);
318 }
319 /**
320 * megasas_clear_interrupt_xscale - Check & clear interrupt
321 * @regs: MFI register set
322 */
323 static int
324 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
325 {
326 u32 status;
327 u32 mfiStatus = 0;
328 /*
329 * Check if it is our interrupt
330 */
331 status = readl(&regs->outbound_intr_status);
332
333 if (status & MFI_OB_INTR_STATUS_MASK)
334 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
335 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
336 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
337
338 /*
339 * Clear the interrupt by writing back the same value
340 */
341 if (mfiStatus)
342 writel(status, &regs->outbound_intr_status);
343
344 /* Dummy readl to force pci flush */
345 readl(&regs->outbound_intr_status);
346
347 return mfiStatus;
348 }
349
350 /**
351 * megasas_fire_cmd_xscale - Sends command to the FW
352 * @frame_phys_addr : Physical address of cmd
353 * @frame_count : Number of frames for the command
354 * @regs : MFI register set
355 */
356 static inline void
357 megasas_fire_cmd_xscale(struct megasas_instance *instance,
358 dma_addr_t frame_phys_addr,
359 u32 frame_count,
360 struct megasas_register_set __iomem *regs)
361 {
362 unsigned long flags;
363 spin_lock_irqsave(&instance->hba_lock, flags);
364 writel((frame_phys_addr >> 3)|(frame_count),
365 &(regs)->inbound_queue_port);
366 spin_unlock_irqrestore(&instance->hba_lock, flags);
367 }
368
369 /**
370 * megasas_adp_reset_xscale - For controller reset
371 * @regs: MFI register set
372 */
373 static int
374 megasas_adp_reset_xscale(struct megasas_instance *instance,
375 struct megasas_register_set __iomem *regs)
376 {
377 u32 i;
378 u32 pcidata;
379 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
380
381 for (i = 0; i < 3; i++)
382 msleep(1000); /* sleep for 3 secs */
383 pcidata = 0;
384 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
385 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
386 if (pcidata & 0x2) {
387 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
388 pcidata &= ~0x2;
389 pci_write_config_dword(instance->pdev,
390 MFI_1068_PCSR_OFFSET, pcidata);
391
392 for (i = 0; i < 2; i++)
393 msleep(1000); /* need to wait 2 secs again */
394
395 pcidata = 0;
396 pci_read_config_dword(instance->pdev,
397 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
398 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
399 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
400 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
401 pcidata = 0;
402 pci_write_config_dword(instance->pdev,
403 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
404 }
405 }
406 return 0;
407 }
408
409 /**
410 * megasas_check_reset_xscale - For controller reset check
411 * @regs: MFI register set
412 */
413 static int
414 megasas_check_reset_xscale(struct megasas_instance *instance,
415 struct megasas_register_set __iomem *regs)
416 {
417
418 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
419 (le32_to_cpu(*instance->consumer) ==
420 MEGASAS_ADPRESET_INPROG_SIGN))
421 return 1;
422 return 0;
423 }
424
425 static struct megasas_instance_template megasas_instance_template_xscale = {
426
427 .fire_cmd = megasas_fire_cmd_xscale,
428 .enable_intr = megasas_enable_intr_xscale,
429 .disable_intr = megasas_disable_intr_xscale,
430 .clear_intr = megasas_clear_intr_xscale,
431 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
432 .adp_reset = megasas_adp_reset_xscale,
433 .check_reset = megasas_check_reset_xscale,
434 .service_isr = megasas_isr,
435 .tasklet = megasas_complete_cmd_dpc,
436 .init_adapter = megasas_init_adapter_mfi,
437 .build_and_issue_cmd = megasas_build_and_issue_cmd,
438 .issue_dcmd = megasas_issue_dcmd,
439 };
440
441 /**
442 * This is the end of set of functions & definitions specific
443 * to xscale (deviceid : 1064R, PERC5) controllers
444 */
445
446 /**
447 * The following functions are defined for ppc (deviceid : 0x60)
448 * controllers
449 */
450
451 /**
452 * megasas_enable_intr_ppc - Enables interrupts
453 * @regs: MFI register set
454 */
455 static inline void
456 megasas_enable_intr_ppc(struct megasas_instance *instance)
457 {
458 struct megasas_register_set __iomem *regs;
459 regs = instance->reg_set;
460 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
461
462 writel(~0x80000000, &(regs)->outbound_intr_mask);
463
464 /* Dummy readl to force pci flush */
465 readl(&regs->outbound_intr_mask);
466 }
467
468 /**
469 * megasas_disable_intr_ppc - Disable interrupt
470 * @regs: MFI register set
471 */
472 static inline void
473 megasas_disable_intr_ppc(struct megasas_instance *instance)
474 {
475 struct megasas_register_set __iomem *regs;
476 u32 mask = 0xFFFFFFFF;
477 regs = instance->reg_set;
478 writel(mask, &regs->outbound_intr_mask);
479 /* Dummy readl to force pci flush */
480 readl(&regs->outbound_intr_mask);
481 }
482
483 /**
484 * megasas_read_fw_status_reg_ppc - returns the current FW status value
485 * @regs: MFI register set
486 */
487 static u32
488 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
489 {
490 return readl(&(regs)->outbound_scratch_pad);
491 }
492
493 /**
494 * megasas_clear_interrupt_ppc - Check & clear interrupt
495 * @regs: MFI register set
496 */
497 static int
498 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
499 {
500 u32 status, mfiStatus = 0;
501
502 /*
503 * Check if it is our interrupt
504 */
505 status = readl(&regs->outbound_intr_status);
506
507 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
508 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
509
510 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
511 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
512
513 /*
514 * Clear the interrupt by writing back the same value
515 */
516 writel(status, &regs->outbound_doorbell_clear);
517
518 /* Dummy readl to force pci flush */
519 readl(&regs->outbound_doorbell_clear);
520
521 return mfiStatus;
522 }
523
524 /**
525 * megasas_fire_cmd_ppc - Sends command to the FW
526 * @frame_phys_addr : Physical address of cmd
527 * @frame_count : Number of frames for the command
528 * @regs : MFI register set
529 */
530 static inline void
531 megasas_fire_cmd_ppc(struct megasas_instance *instance,
532 dma_addr_t frame_phys_addr,
533 u32 frame_count,
534 struct megasas_register_set __iomem *regs)
535 {
536 unsigned long flags;
537 spin_lock_irqsave(&instance->hba_lock, flags);
538 writel((frame_phys_addr | (frame_count<<1))|1,
539 &(regs)->inbound_queue_port);
540 spin_unlock_irqrestore(&instance->hba_lock, flags);
541 }
542
543 /**
544 * megasas_check_reset_ppc - For controller reset check
545 * @regs: MFI register set
546 */
547 static int
548 megasas_check_reset_ppc(struct megasas_instance *instance,
549 struct megasas_register_set __iomem *regs)
550 {
551 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
552 return 1;
553
554 return 0;
555 }
556
557 static struct megasas_instance_template megasas_instance_template_ppc = {
558
559 .fire_cmd = megasas_fire_cmd_ppc,
560 .enable_intr = megasas_enable_intr_ppc,
561 .disable_intr = megasas_disable_intr_ppc,
562 .clear_intr = megasas_clear_intr_ppc,
563 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
564 .adp_reset = megasas_adp_reset_xscale,
565 .check_reset = megasas_check_reset_ppc,
566 .service_isr = megasas_isr,
567 .tasklet = megasas_complete_cmd_dpc,
568 .init_adapter = megasas_init_adapter_mfi,
569 .build_and_issue_cmd = megasas_build_and_issue_cmd,
570 .issue_dcmd = megasas_issue_dcmd,
571 };
572
573 /**
574 * megasas_enable_intr_skinny - Enables interrupts
575 * @regs: MFI register set
576 */
577 static inline void
578 megasas_enable_intr_skinny(struct megasas_instance *instance)
579 {
580 struct megasas_register_set __iomem *regs;
581 regs = instance->reg_set;
582 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
583
584 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
585
586 /* Dummy readl to force pci flush */
587 readl(&regs->outbound_intr_mask);
588 }
589
590 /**
591 * megasas_disable_intr_skinny - Disables interrupt
592 * @regs: MFI register set
593 */
594 static inline void
595 megasas_disable_intr_skinny(struct megasas_instance *instance)
596 {
597 struct megasas_register_set __iomem *regs;
598 u32 mask = 0xFFFFFFFF;
599 regs = instance->reg_set;
600 writel(mask, &regs->outbound_intr_mask);
601 /* Dummy readl to force pci flush */
602 readl(&regs->outbound_intr_mask);
603 }
604
605 /**
606 * megasas_read_fw_status_reg_skinny - returns the current FW status value
607 * @regs: MFI register set
608 */
609 static u32
610 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
611 {
612 return readl(&(regs)->outbound_scratch_pad);
613 }
614
615 /**
616 * megasas_clear_interrupt_skinny - Check & clear interrupt
617 * @regs: MFI register set
618 */
619 static int
620 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
621 {
622 u32 status;
623 u32 mfiStatus = 0;
624
625 /*
626 * Check if it is our interrupt
627 */
628 status = readl(&regs->outbound_intr_status);
629
630 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
631 return 0;
632 }
633
634 /*
635 * Check if it is our interrupt
636 */
637 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
638 MFI_STATE_FAULT) {
639 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
640 } else
641 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
642
643 /*
644 * Clear the interrupt by writing back the same value
645 */
646 writel(status, &regs->outbound_intr_status);
647
648 /*
649 * dummy read to flush PCI
650 */
651 readl(&regs->outbound_intr_status);
652
653 return mfiStatus;
654 }
655
656 /**
657 * megasas_fire_cmd_skinny - Sends command to the FW
658 * @frame_phys_addr : Physical address of cmd
659 * @frame_count : Number of frames for the command
660 * @regs : MFI register set
661 */
662 static inline void
663 megasas_fire_cmd_skinny(struct megasas_instance *instance,
664 dma_addr_t frame_phys_addr,
665 u32 frame_count,
666 struct megasas_register_set __iomem *regs)
667 {
668 unsigned long flags;
669 spin_lock_irqsave(&instance->hba_lock, flags);
670 writel(upper_32_bits(frame_phys_addr),
671 &(regs)->inbound_high_queue_port);
672 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
673 &(regs)->inbound_low_queue_port);
674 spin_unlock_irqrestore(&instance->hba_lock, flags);
675 }
676
677 /**
678 * megasas_check_reset_skinny - For controller reset check
679 * @regs: MFI register set
680 */
681 static int
682 megasas_check_reset_skinny(struct megasas_instance *instance,
683 struct megasas_register_set __iomem *regs)
684 {
685 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
686 return 1;
687
688 return 0;
689 }
690
691 static struct megasas_instance_template megasas_instance_template_skinny = {
692
693 .fire_cmd = megasas_fire_cmd_skinny,
694 .enable_intr = megasas_enable_intr_skinny,
695 .disable_intr = megasas_disable_intr_skinny,
696 .clear_intr = megasas_clear_intr_skinny,
697 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
698 .adp_reset = megasas_adp_reset_gen2,
699 .check_reset = megasas_check_reset_skinny,
700 .service_isr = megasas_isr,
701 .tasklet = megasas_complete_cmd_dpc,
702 .init_adapter = megasas_init_adapter_mfi,
703 .build_and_issue_cmd = megasas_build_and_issue_cmd,
704 .issue_dcmd = megasas_issue_dcmd,
705 };
706
707
708 /**
709 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
710 * controllers
711 */
712
713 /**
714 * megasas_enable_intr_gen2 - Enables interrupts
715 * @regs: MFI register set
716 */
717 static inline void
718 megasas_enable_intr_gen2(struct megasas_instance *instance)
719 {
720 struct megasas_register_set __iomem *regs;
721 regs = instance->reg_set;
722 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
723
724 /* write ~0x00000005 (4 & 1) to the intr mask*/
725 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
726
727 /* Dummy readl to force pci flush */
728 readl(&regs->outbound_intr_mask);
729 }
730
731 /**
732 * megasas_disable_intr_gen2 - Disables interrupt
733 * @regs: MFI register set
734 */
735 static inline void
736 megasas_disable_intr_gen2(struct megasas_instance *instance)
737 {
738 struct megasas_register_set __iomem *regs;
739 u32 mask = 0xFFFFFFFF;
740 regs = instance->reg_set;
741 writel(mask, &regs->outbound_intr_mask);
742 /* Dummy readl to force pci flush */
743 readl(&regs->outbound_intr_mask);
744 }
745
746 /**
747 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
748 * @regs: MFI register set
749 */
750 static u32
751 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
752 {
753 return readl(&(regs)->outbound_scratch_pad);
754 }
755
756 /**
757 * megasas_clear_interrupt_gen2 - Check & clear interrupt
758 * @regs: MFI register set
759 */
760 static int
761 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
762 {
763 u32 status;
764 u32 mfiStatus = 0;
765 /*
766 * Check if it is our interrupt
767 */
768 status = readl(&regs->outbound_intr_status);
769
770 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
771 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
772 }
773 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
774 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
775 }
776
777 /*
778 * Clear the interrupt by writing back the same value
779 */
780 if (mfiStatus)
781 writel(status, &regs->outbound_doorbell_clear);
782
783 /* Dummy readl to force pci flush */
784 readl(&regs->outbound_intr_status);
785
786 return mfiStatus;
787 }
788 /**
789 * megasas_fire_cmd_gen2 - Sends command to the FW
790 * @frame_phys_addr : Physical address of cmd
791 * @frame_count : Number of frames for the command
792 * @regs : MFI register set
793 */
794 static inline void
795 megasas_fire_cmd_gen2(struct megasas_instance *instance,
796 dma_addr_t frame_phys_addr,
797 u32 frame_count,
798 struct megasas_register_set __iomem *regs)
799 {
800 unsigned long flags;
801 spin_lock_irqsave(&instance->hba_lock, flags);
802 writel((frame_phys_addr | (frame_count<<1))|1,
803 &(regs)->inbound_queue_port);
804 spin_unlock_irqrestore(&instance->hba_lock, flags);
805 }
806
807 /**
808 * megasas_adp_reset_gen2 - For controller reset
809 * @regs: MFI register set
810 */
811 static int
812 megasas_adp_reset_gen2(struct megasas_instance *instance,
813 struct megasas_register_set __iomem *reg_set)
814 {
815 u32 retry = 0 ;
816 u32 HostDiag;
817 u32 *seq_offset = &reg_set->seq_offset;
818 u32 *hostdiag_offset = &reg_set->host_diag;
819
820 if (instance->instancet == &megasas_instance_template_skinny) {
821 seq_offset = &reg_set->fusion_seq_offset;
822 hostdiag_offset = &reg_set->fusion_host_diag;
823 }
824
825 writel(0, seq_offset);
826 writel(4, seq_offset);
827 writel(0xb, seq_offset);
828 writel(2, seq_offset);
829 writel(7, seq_offset);
830 writel(0xd, seq_offset);
831
832 msleep(1000);
833
834 HostDiag = (u32)readl(hostdiag_offset);
835
836 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
837 msleep(100);
838 HostDiag = (u32)readl(hostdiag_offset);
839 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
840 retry, HostDiag);
841
842 if (retry++ >= 100)
843 return 1;
844
845 }
846
847 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
848
849 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
850
851 ssleep(10);
852
853 HostDiag = (u32)readl(hostdiag_offset);
854 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
855 msleep(100);
856 HostDiag = (u32)readl(hostdiag_offset);
857 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
858 retry, HostDiag);
859
860 if (retry++ >= 1000)
861 return 1;
862
863 }
864 return 0;
865 }
866
867 /**
868 * megasas_check_reset_gen2 - For controller reset check
869 * @regs: MFI register set
870 */
871 static int
872 megasas_check_reset_gen2(struct megasas_instance *instance,
873 struct megasas_register_set __iomem *regs)
874 {
875 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
876 return 1;
877 }
878
879 return 0;
880 }
881
882 static struct megasas_instance_template megasas_instance_template_gen2 = {
883
884 .fire_cmd = megasas_fire_cmd_gen2,
885 .enable_intr = megasas_enable_intr_gen2,
886 .disable_intr = megasas_disable_intr_gen2,
887 .clear_intr = megasas_clear_intr_gen2,
888 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
889 .adp_reset = megasas_adp_reset_gen2,
890 .check_reset = megasas_check_reset_gen2,
891 .service_isr = megasas_isr,
892 .tasklet = megasas_complete_cmd_dpc,
893 .init_adapter = megasas_init_adapter_mfi,
894 .build_and_issue_cmd = megasas_build_and_issue_cmd,
895 .issue_dcmd = megasas_issue_dcmd,
896 };
897
898 /**
899 * This is the end of set of functions & definitions
900 * specific to gen2 (deviceid : 0x78, 0x79) controllers
901 */
902
903 /*
904 * Template added for TB (Fusion)
905 */
906 extern struct megasas_instance_template megasas_instance_template_fusion;
907
908 /**
909 * megasas_issue_polled - Issues a polling command
910 * @instance: Adapter soft state
911 * @cmd: Command packet to be issued
912 *
913 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
914 */
915 int
916 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
917 {
918 int seconds;
919
920 struct megasas_header *frame_hdr = &cmd->frame->hdr;
921
922 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
923 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
924
925 /*
926 * Issue the frame using inbound queue port
927 */
928 instance->instancet->issue_dcmd(instance, cmd);
929
930 /*
931 * Wait for cmd_status to change
932 */
933 if (instance->requestorId)
934 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
935 else
936 seconds = MFI_POLL_TIMEOUT_SECS;
937 return wait_and_poll(instance, cmd, seconds);
938 }
939
940 /**
941 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
942 * @instance: Adapter soft state
943 * @cmd: Command to be issued
944 * @timeout: Timeout in seconds
945 *
946 * This function waits on an event for the command to be returned from ISR.
947 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
948 * Used to issue ioctl commands.
949 */
950 int
951 megasas_issue_blocked_cmd(struct megasas_instance *instance,
952 struct megasas_cmd *cmd, int timeout)
953 {
954 int ret = 0;
955 cmd->cmd_status = ENODATA;
956
957 cmd->is_wait_event = 1;
958 instance->instancet->issue_dcmd(instance, cmd);
959 if (timeout) {
960 ret = wait_event_timeout(instance->int_cmd_wait_q,
961 cmd->cmd_status != ENODATA, timeout * HZ);
962 if (!ret)
963 return 1;
964 } else
965 wait_event(instance->int_cmd_wait_q,
966 cmd->cmd_status != ENODATA);
967
968 return 0;
969 }
970
971 /**
972 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
973 * @instance: Adapter soft state
974 * @cmd_to_abort: Previously issued cmd to be aborted
975 * @timeout: Timeout in seconds
976 *
977 * MFI firmware can abort previously issued AEN comamnd (automatic event
978 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
979 * cmd and waits for return status.
980 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
981 */
982 static int
983 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
984 struct megasas_cmd *cmd_to_abort, int timeout)
985 {
986 struct megasas_cmd *cmd;
987 struct megasas_abort_frame *abort_fr;
988 int ret = 0;
989
990 cmd = megasas_get_cmd(instance);
991
992 if (!cmd)
993 return -1;
994
995 abort_fr = &cmd->frame->abort;
996
997 /*
998 * Prepare and issue the abort frame
999 */
1000 abort_fr->cmd = MFI_CMD_ABORT;
1001 abort_fr->cmd_status = 0xFF;
1002 abort_fr->flags = cpu_to_le16(0);
1003 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1004 abort_fr->abort_mfi_phys_addr_lo =
1005 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1006 abort_fr->abort_mfi_phys_addr_hi =
1007 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1008
1009 cmd->sync_cmd = 1;
1010 cmd->cmd_status = ENODATA;
1011
1012 instance->instancet->issue_dcmd(instance, cmd);
1013
1014 if (timeout) {
1015 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1016 cmd->cmd_status != ENODATA, timeout * HZ);
1017 if (!ret) {
1018 dev_err(&instance->pdev->dev, "Command timedout"
1019 "from %s\n", __func__);
1020 return 1;
1021 }
1022 } else
1023 wait_event(instance->abort_cmd_wait_q,
1024 cmd->cmd_status != ENODATA);
1025
1026 cmd->sync_cmd = 0;
1027
1028 megasas_return_cmd(instance, cmd);
1029 return 0;
1030 }
1031
1032 /**
1033 * megasas_make_sgl32 - Prepares 32-bit SGL
1034 * @instance: Adapter soft state
1035 * @scp: SCSI command from the mid-layer
1036 * @mfi_sgl: SGL to be filled in
1037 *
1038 * If successful, this function returns the number of SG elements. Otherwise,
1039 * it returnes -1.
1040 */
1041 static int
1042 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1043 union megasas_sgl *mfi_sgl)
1044 {
1045 int i;
1046 int sge_count;
1047 struct scatterlist *os_sgl;
1048
1049 sge_count = scsi_dma_map(scp);
1050 BUG_ON(sge_count < 0);
1051
1052 if (sge_count) {
1053 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1054 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1055 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1056 }
1057 }
1058 return sge_count;
1059 }
1060
1061 /**
1062 * megasas_make_sgl64 - Prepares 64-bit SGL
1063 * @instance: Adapter soft state
1064 * @scp: SCSI command from the mid-layer
1065 * @mfi_sgl: SGL to be filled in
1066 *
1067 * If successful, this function returns the number of SG elements. Otherwise,
1068 * it returnes -1.
1069 */
1070 static int
1071 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1072 union megasas_sgl *mfi_sgl)
1073 {
1074 int i;
1075 int sge_count;
1076 struct scatterlist *os_sgl;
1077
1078 sge_count = scsi_dma_map(scp);
1079 BUG_ON(sge_count < 0);
1080
1081 if (sge_count) {
1082 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1083 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1084 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1085 }
1086 }
1087 return sge_count;
1088 }
1089
1090 /**
1091 * megasas_make_sgl_skinny - Prepares IEEE SGL
1092 * @instance: Adapter soft state
1093 * @scp: SCSI command from the mid-layer
1094 * @mfi_sgl: SGL to be filled in
1095 *
1096 * If successful, this function returns the number of SG elements. Otherwise,
1097 * it returnes -1.
1098 */
1099 static int
1100 megasas_make_sgl_skinny(struct megasas_instance *instance,
1101 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1102 {
1103 int i;
1104 int sge_count;
1105 struct scatterlist *os_sgl;
1106
1107 sge_count = scsi_dma_map(scp);
1108
1109 if (sge_count) {
1110 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1111 mfi_sgl->sge_skinny[i].length =
1112 cpu_to_le32(sg_dma_len(os_sgl));
1113 mfi_sgl->sge_skinny[i].phys_addr =
1114 cpu_to_le64(sg_dma_address(os_sgl));
1115 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1116 }
1117 }
1118 return sge_count;
1119 }
1120
1121 /**
1122 * megasas_get_frame_count - Computes the number of frames
1123 * @frame_type : type of frame- io or pthru frame
1124 * @sge_count : number of sg elements
1125 *
1126 * Returns the number of frames required for numnber of sge's (sge_count)
1127 */
1128
1129 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1130 u8 sge_count, u8 frame_type)
1131 {
1132 int num_cnt;
1133 int sge_bytes;
1134 u32 sge_sz;
1135 u32 frame_count=0;
1136
1137 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1138 sizeof(struct megasas_sge32);
1139
1140 if (instance->flag_ieee) {
1141 sge_sz = sizeof(struct megasas_sge_skinny);
1142 }
1143
1144 /*
1145 * Main frame can contain 2 SGEs for 64-bit SGLs and
1146 * 3 SGEs for 32-bit SGLs for ldio &
1147 * 1 SGEs for 64-bit SGLs and
1148 * 2 SGEs for 32-bit SGLs for pthru frame
1149 */
1150 if (unlikely(frame_type == PTHRU_FRAME)) {
1151 if (instance->flag_ieee == 1) {
1152 num_cnt = sge_count - 1;
1153 } else if (IS_DMA64)
1154 num_cnt = sge_count - 1;
1155 else
1156 num_cnt = sge_count - 2;
1157 } else {
1158 if (instance->flag_ieee == 1) {
1159 num_cnt = sge_count - 1;
1160 } else if (IS_DMA64)
1161 num_cnt = sge_count - 2;
1162 else
1163 num_cnt = sge_count - 3;
1164 }
1165
1166 if(num_cnt>0){
1167 sge_bytes = sge_sz * num_cnt;
1168
1169 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1170 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1171 }
1172 /* Main frame */
1173 frame_count +=1;
1174
1175 if (frame_count > 7)
1176 frame_count = 8;
1177 return frame_count;
1178 }
1179
1180 /**
1181 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1182 * @instance: Adapter soft state
1183 * @scp: SCSI command
1184 * @cmd: Command to be prepared in
1185 *
1186 * This function prepares CDB commands. These are typcially pass-through
1187 * commands to the devices.
1188 */
1189 static int
1190 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1191 struct megasas_cmd *cmd)
1192 {
1193 u32 is_logical;
1194 u32 device_id;
1195 u16 flags = 0;
1196 struct megasas_pthru_frame *pthru;
1197
1198 is_logical = MEGASAS_IS_LOGICAL(scp);
1199 device_id = MEGASAS_DEV_INDEX(instance, scp);
1200 pthru = (struct megasas_pthru_frame *)cmd->frame;
1201
1202 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1203 flags = MFI_FRAME_DIR_WRITE;
1204 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1205 flags = MFI_FRAME_DIR_READ;
1206 else if (scp->sc_data_direction == PCI_DMA_NONE)
1207 flags = MFI_FRAME_DIR_NONE;
1208
1209 if (instance->flag_ieee == 1) {
1210 flags |= MFI_FRAME_IEEE;
1211 }
1212
1213 /*
1214 * Prepare the DCDB frame
1215 */
1216 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1217 pthru->cmd_status = 0x0;
1218 pthru->scsi_status = 0x0;
1219 pthru->target_id = device_id;
1220 pthru->lun = scp->device->lun;
1221 pthru->cdb_len = scp->cmd_len;
1222 pthru->timeout = 0;
1223 pthru->pad_0 = 0;
1224 pthru->flags = cpu_to_le16(flags);
1225 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1226
1227 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1228
1229 /*
1230 * If the command is for the tape device, set the
1231 * pthru timeout to the os layer timeout value.
1232 */
1233 if (scp->device->type == TYPE_TAPE) {
1234 if ((scp->request->timeout / HZ) > 0xFFFF)
1235 pthru->timeout = 0xFFFF;
1236 else
1237 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1238 }
1239
1240 /*
1241 * Construct SGL
1242 */
1243 if (instance->flag_ieee == 1) {
1244 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1245 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1246 &pthru->sgl);
1247 } else if (IS_DMA64) {
1248 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1249 pthru->sge_count = megasas_make_sgl64(instance, scp,
1250 &pthru->sgl);
1251 } else
1252 pthru->sge_count = megasas_make_sgl32(instance, scp,
1253 &pthru->sgl);
1254
1255 if (pthru->sge_count > instance->max_num_sge) {
1256 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1257 pthru->sge_count);
1258 return 0;
1259 }
1260
1261 /*
1262 * Sense info specific
1263 */
1264 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1265 pthru->sense_buf_phys_addr_hi =
1266 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1267 pthru->sense_buf_phys_addr_lo =
1268 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1269
1270 /*
1271 * Compute the total number of frames this command consumes. FW uses
1272 * this number to pull sufficient number of frames from host memory.
1273 */
1274 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1275 PTHRU_FRAME);
1276
1277 return cmd->frame_count;
1278 }
1279
1280 /**
1281 * megasas_build_ldio - Prepares IOs to logical devices
1282 * @instance: Adapter soft state
1283 * @scp: SCSI command
1284 * @cmd: Command to be prepared
1285 *
1286 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1287 */
1288 static int
1289 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1290 struct megasas_cmd *cmd)
1291 {
1292 u32 device_id;
1293 u8 sc = scp->cmnd[0];
1294 u16 flags = 0;
1295 struct megasas_io_frame *ldio;
1296
1297 device_id = MEGASAS_DEV_INDEX(instance, scp);
1298 ldio = (struct megasas_io_frame *)cmd->frame;
1299
1300 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1301 flags = MFI_FRAME_DIR_WRITE;
1302 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1303 flags = MFI_FRAME_DIR_READ;
1304
1305 if (instance->flag_ieee == 1) {
1306 flags |= MFI_FRAME_IEEE;
1307 }
1308
1309 /*
1310 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1311 */
1312 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1313 ldio->cmd_status = 0x0;
1314 ldio->scsi_status = 0x0;
1315 ldio->target_id = device_id;
1316 ldio->timeout = 0;
1317 ldio->reserved_0 = 0;
1318 ldio->pad_0 = 0;
1319 ldio->flags = cpu_to_le16(flags);
1320 ldio->start_lba_hi = 0;
1321 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1322
1323 /*
1324 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1325 */
1326 if (scp->cmd_len == 6) {
1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1328 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1329 ((u32) scp->cmnd[2] << 8) |
1330 (u32) scp->cmnd[3]);
1331
1332 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1333 }
1334
1335 /*
1336 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1337 */
1338 else if (scp->cmd_len == 10) {
1339 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1340 ((u32) scp->cmnd[7] << 8));
1341 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1342 ((u32) scp->cmnd[3] << 16) |
1343 ((u32) scp->cmnd[4] << 8) |
1344 (u32) scp->cmnd[5]);
1345 }
1346
1347 /*
1348 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1349 */
1350 else if (scp->cmd_len == 12) {
1351 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1352 ((u32) scp->cmnd[7] << 16) |
1353 ((u32) scp->cmnd[8] << 8) |
1354 (u32) scp->cmnd[9]);
1355
1356 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1357 ((u32) scp->cmnd[3] << 16) |
1358 ((u32) scp->cmnd[4] << 8) |
1359 (u32) scp->cmnd[5]);
1360 }
1361
1362 /*
1363 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1364 */
1365 else if (scp->cmd_len == 16) {
1366 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1367 ((u32) scp->cmnd[11] << 16) |
1368 ((u32) scp->cmnd[12] << 8) |
1369 (u32) scp->cmnd[13]);
1370
1371 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1372 ((u32) scp->cmnd[7] << 16) |
1373 ((u32) scp->cmnd[8] << 8) |
1374 (u32) scp->cmnd[9]);
1375
1376 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1377 ((u32) scp->cmnd[3] << 16) |
1378 ((u32) scp->cmnd[4] << 8) |
1379 (u32) scp->cmnd[5]);
1380
1381 }
1382
1383 /*
1384 * Construct SGL
1385 */
1386 if (instance->flag_ieee) {
1387 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1388 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1389 &ldio->sgl);
1390 } else if (IS_DMA64) {
1391 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1392 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1393 } else
1394 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1395
1396 if (ldio->sge_count > instance->max_num_sge) {
1397 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1398 ldio->sge_count);
1399 return 0;
1400 }
1401
1402 /*
1403 * Sense info specific
1404 */
1405 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1406 ldio->sense_buf_phys_addr_hi = 0;
1407 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1408
1409 /*
1410 * Compute the total number of frames this command consumes. FW uses
1411 * this number to pull sufficient number of frames from host memory.
1412 */
1413 cmd->frame_count = megasas_get_frame_count(instance,
1414 ldio->sge_count, IO_FRAME);
1415
1416 return cmd->frame_count;
1417 }
1418
1419 /**
1420 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1421 * and whether it's RW or non RW
1422 * @scmd: SCSI command
1423 *
1424 */
1425 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1426 {
1427 int ret;
1428
1429 switch (cmd->cmnd[0]) {
1430 case READ_10:
1431 case WRITE_10:
1432 case READ_12:
1433 case WRITE_12:
1434 case READ_6:
1435 case WRITE_6:
1436 case READ_16:
1437 case WRITE_16:
1438 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1439 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1440 break;
1441 default:
1442 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1443 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1444 }
1445 return ret;
1446 }
1447
1448 /**
1449 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1450 * in FW
1451 * @instance: Adapter soft state
1452 */
1453 static inline void
1454 megasas_dump_pending_frames(struct megasas_instance *instance)
1455 {
1456 struct megasas_cmd *cmd;
1457 int i,n;
1458 union megasas_sgl *mfi_sgl;
1459 struct megasas_io_frame *ldio;
1460 struct megasas_pthru_frame *pthru;
1461 u32 sgcount;
1462 u32 max_cmd = instance->max_fw_cmds;
1463
1464 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1465 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1466 if (IS_DMA64)
1467 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1468 else
1469 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1470
1471 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1472 for (i = 0; i < max_cmd; i++) {
1473 cmd = instance->cmd_list[i];
1474 if(!cmd->scmd)
1475 continue;
1476 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1477 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1478 ldio = (struct megasas_io_frame *)cmd->frame;
1479 mfi_sgl = &ldio->sgl;
1480 sgcount = ldio->sge_count;
1481 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1482 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1483 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1484 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1485 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1486 }
1487 else {
1488 pthru = (struct megasas_pthru_frame *) cmd->frame;
1489 mfi_sgl = &pthru->sgl;
1490 sgcount = pthru->sge_count;
1491 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1492 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1493 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1494 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1495 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1496 }
1497 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1498 for (n = 0; n < sgcount; n++){
1499 if (IS_DMA64)
1500 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1501 le32_to_cpu(mfi_sgl->sge64[n].length),
1502 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1503 else
1504 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1505 le32_to_cpu(mfi_sgl->sge32[n].length),
1506 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1507 }
1508 }
1509 printk(KERN_ERR "\n");
1510 } /*for max_cmd*/
1511 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1512 for (i = 0; i < max_cmd; i++) {
1513
1514 cmd = instance->cmd_list[i];
1515
1516 if(cmd->sync_cmd == 1){
1517 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1518 }
1519 }
1520 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1521 }
1522
1523 u32
1524 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1525 struct scsi_cmnd *scmd)
1526 {
1527 struct megasas_cmd *cmd;
1528 u32 frame_count;
1529
1530 cmd = megasas_get_cmd(instance);
1531 if (!cmd)
1532 return SCSI_MLQUEUE_HOST_BUSY;
1533
1534 /*
1535 * Logical drive command
1536 */
1537 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1538 frame_count = megasas_build_ldio(instance, scmd, cmd);
1539 else
1540 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1541
1542 if (!frame_count)
1543 goto out_return_cmd;
1544
1545 cmd->scmd = scmd;
1546 scmd->SCp.ptr = (char *)cmd;
1547
1548 /*
1549 * Issue the command to the FW
1550 */
1551 atomic_inc(&instance->fw_outstanding);
1552
1553 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1554 cmd->frame_count-1, instance->reg_set);
1555
1556 return 0;
1557 out_return_cmd:
1558 megasas_return_cmd(instance, cmd);
1559 return 1;
1560 }
1561
1562
1563 /**
1564 * megasas_queue_command - Queue entry point
1565 * @scmd: SCSI command to be queued
1566 * @done: Callback entry point
1567 */
1568 static int
1569 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1570 {
1571 struct megasas_instance *instance;
1572 unsigned long flags;
1573
1574 instance = (struct megasas_instance *)
1575 scmd->device->host->hostdata;
1576
1577 if (instance->unload == 1) {
1578 scmd->result = DID_NO_CONNECT << 16;
1579 scmd->scsi_done(scmd);
1580 return 0;
1581 }
1582
1583 if (instance->issuepend_done == 0)
1584 return SCSI_MLQUEUE_HOST_BUSY;
1585
1586 spin_lock_irqsave(&instance->hba_lock, flags);
1587
1588 /* Check for an mpio path and adjust behavior */
1589 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1590 if (megasas_check_mpio_paths(instance, scmd) ==
1591 (DID_RESET << 16)) {
1592 spin_unlock_irqrestore(&instance->hba_lock, flags);
1593 return SCSI_MLQUEUE_HOST_BUSY;
1594 } else {
1595 spin_unlock_irqrestore(&instance->hba_lock, flags);
1596 scmd->result = DID_NO_CONNECT << 16;
1597 scmd->scsi_done(scmd);
1598 return 0;
1599 }
1600 }
1601
1602 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1603 spin_unlock_irqrestore(&instance->hba_lock, flags);
1604 scmd->result = DID_NO_CONNECT << 16;
1605 scmd->scsi_done(scmd);
1606 return 0;
1607 }
1608
1609 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1610 spin_unlock_irqrestore(&instance->hba_lock, flags);
1611 return SCSI_MLQUEUE_HOST_BUSY;
1612 }
1613
1614 spin_unlock_irqrestore(&instance->hba_lock, flags);
1615
1616 scmd->result = 0;
1617
1618 if (MEGASAS_IS_LOGICAL(scmd) &&
1619 (scmd->device->id >= instance->fw_supported_vd_count ||
1620 scmd->device->lun)) {
1621 scmd->result = DID_BAD_TARGET << 16;
1622 goto out_done;
1623 }
1624
1625 switch (scmd->cmnd[0]) {
1626 case SYNCHRONIZE_CACHE:
1627 /*
1628 * FW takes care of flush cache on its own
1629 * No need to send it down
1630 */
1631 scmd->result = DID_OK << 16;
1632 goto out_done;
1633 default:
1634 break;
1635 }
1636
1637 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1638 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1639 return SCSI_MLQUEUE_HOST_BUSY;
1640 }
1641
1642 return 0;
1643
1644 out_done:
1645 scmd->scsi_done(scmd);
1646 return 0;
1647 }
1648
1649 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1650 {
1651 int i;
1652
1653 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1654
1655 if ((megasas_mgmt_info.instance[i]) &&
1656 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1657 return megasas_mgmt_info.instance[i];
1658 }
1659
1660 return NULL;
1661 }
1662
1663 static int megasas_slave_configure(struct scsi_device *sdev)
1664 {
1665 /*
1666 * The RAID firmware may require extended timeouts.
1667 */
1668 blk_queue_rq_timeout(sdev->request_queue,
1669 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1670
1671 return 0;
1672 }
1673
1674 static int megasas_slave_alloc(struct scsi_device *sdev)
1675 {
1676 u16 pd_index = 0;
1677 struct megasas_instance *instance ;
1678 instance = megasas_lookup_instance(sdev->host->host_no);
1679 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1680 /*
1681 * Open the OS scan to the SYSTEM PD
1682 */
1683 pd_index =
1684 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1685 sdev->id;
1686 if (instance->pd_list[pd_index].driveState ==
1687 MR_PD_STATE_SYSTEM) {
1688 return 0;
1689 }
1690 return -ENXIO;
1691 }
1692 return 0;
1693 }
1694
1695 /*
1696 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1697 * kill adapter
1698 * @instance: Adapter soft state
1699 *
1700 */
1701 void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1702 {
1703 int i;
1704 struct megasas_cmd *cmd_mfi;
1705 struct megasas_cmd_fusion *cmd_fusion;
1706 struct fusion_context *fusion = instance->ctrl_context;
1707
1708 /* Find all outstanding ioctls */
1709 if (fusion) {
1710 for (i = 0; i < instance->max_fw_cmds; i++) {
1711 cmd_fusion = fusion->cmd_list[i];
1712 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1713 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1714 if (cmd_mfi->sync_cmd &&
1715 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1716 megasas_complete_cmd(instance,
1717 cmd_mfi, DID_OK);
1718 }
1719 }
1720 } else {
1721 for (i = 0; i < instance->max_fw_cmds; i++) {
1722 cmd_mfi = instance->cmd_list[i];
1723 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1724 MFI_CMD_ABORT)
1725 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1726 }
1727 }
1728 }
1729
1730
1731 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1732 {
1733 /* Set critical error to block I/O & ioctls in case caller didn't */
1734 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1735 /* Wait 1 second to ensure IO or ioctls in build have posted */
1736 msleep(1000);
1737 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1738 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1739 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1740 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
1741 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1742 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1743 writel(MFI_STOP_ADP,
1744 &instance->reg_set->doorbell);
1745 /* Flush */
1746 readl(&instance->reg_set->doorbell);
1747 if (instance->mpio && instance->requestorId)
1748 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1749 } else {
1750 writel(MFI_STOP_ADP,
1751 &instance->reg_set->inbound_doorbell);
1752 }
1753 /* Complete outstanding ioctls when adapter is killed */
1754 megasas_complete_outstanding_ioctls(instance);
1755 }
1756
1757 /**
1758 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1759 * restored to max value
1760 * @instance: Adapter soft state
1761 *
1762 */
1763 void
1764 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1765 {
1766 unsigned long flags;
1767
1768 if (instance->flag & MEGASAS_FW_BUSY
1769 && time_after(jiffies, instance->last_time + 5 * HZ)
1770 && atomic_read(&instance->fw_outstanding) <
1771 instance->throttlequeuedepth + 1) {
1772
1773 spin_lock_irqsave(instance->host->host_lock, flags);
1774 instance->flag &= ~MEGASAS_FW_BUSY;
1775
1776 instance->host->can_queue = instance->max_scsi_cmds;
1777 spin_unlock_irqrestore(instance->host->host_lock, flags);
1778 }
1779 }
1780
1781 /**
1782 * megasas_complete_cmd_dpc - Returns FW's controller structure
1783 * @instance_addr: Address of adapter soft state
1784 *
1785 * Tasklet to complete cmds
1786 */
1787 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1788 {
1789 u32 producer;
1790 u32 consumer;
1791 u32 context;
1792 struct megasas_cmd *cmd;
1793 struct megasas_instance *instance =
1794 (struct megasas_instance *)instance_addr;
1795 unsigned long flags;
1796
1797 /* If we have already declared adapter dead, donot complete cmds */
1798 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1799 return;
1800
1801 spin_lock_irqsave(&instance->completion_lock, flags);
1802
1803 producer = le32_to_cpu(*instance->producer);
1804 consumer = le32_to_cpu(*instance->consumer);
1805
1806 while (consumer != producer) {
1807 context = le32_to_cpu(instance->reply_queue[consumer]);
1808 if (context >= instance->max_fw_cmds) {
1809 printk(KERN_ERR "Unexpected context value %x\n",
1810 context);
1811 BUG();
1812 }
1813
1814 cmd = instance->cmd_list[context];
1815
1816 megasas_complete_cmd(instance, cmd, DID_OK);
1817
1818 consumer++;
1819 if (consumer == (instance->max_fw_cmds + 1)) {
1820 consumer = 0;
1821 }
1822 }
1823
1824 *instance->consumer = cpu_to_le32(producer);
1825
1826 spin_unlock_irqrestore(&instance->completion_lock, flags);
1827
1828 /*
1829 * Check if we can restore can_queue
1830 */
1831 megasas_check_and_restore_queue_depth(instance);
1832 }
1833
1834 /**
1835 * megasas_start_timer - Initializes a timer object
1836 * @instance: Adapter soft state
1837 * @timer: timer object to be initialized
1838 * @fn: timer function
1839 * @interval: time interval between timer function call
1840 *
1841 */
1842 void megasas_start_timer(struct megasas_instance *instance,
1843 struct timer_list *timer,
1844 void *fn, unsigned long interval)
1845 {
1846 init_timer(timer);
1847 timer->expires = jiffies + interval;
1848 timer->data = (unsigned long)instance;
1849 timer->function = fn;
1850 add_timer(timer);
1851 }
1852
1853 static void
1854 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1855
1856 static void
1857 process_fw_state_change_wq(struct work_struct *work);
1858
1859 void megasas_do_ocr(struct megasas_instance *instance)
1860 {
1861 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1862 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1863 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1864 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1865 }
1866 instance->instancet->disable_intr(instance);
1867 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1868 instance->issuepend_done = 0;
1869
1870 atomic_set(&instance->fw_outstanding, 0);
1871 megasas_internal_reset_defer_cmds(instance);
1872 process_fw_state_change_wq(&instance->work_init);
1873 }
1874
1875 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1876 int initial)
1877 {
1878 struct megasas_cmd *cmd;
1879 struct megasas_dcmd_frame *dcmd;
1880 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1881 dma_addr_t new_affiliation_111_h;
1882 int ld, retval = 0;
1883 u8 thisVf;
1884
1885 cmd = megasas_get_cmd(instance);
1886
1887 if (!cmd) {
1888 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1889 "Failed to get cmd for scsi%d.\n",
1890 instance->host->host_no);
1891 return -ENOMEM;
1892 }
1893
1894 dcmd = &cmd->frame->dcmd;
1895
1896 if (!instance->vf_affiliation_111) {
1897 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1898 "affiliation for scsi%d.\n", instance->host->host_no);
1899 megasas_return_cmd(instance, cmd);
1900 return -ENOMEM;
1901 }
1902
1903 if (initial)
1904 memset(instance->vf_affiliation_111, 0,
1905 sizeof(struct MR_LD_VF_AFFILIATION_111));
1906 else {
1907 new_affiliation_111 =
1908 pci_alloc_consistent(instance->pdev,
1909 sizeof(struct MR_LD_VF_AFFILIATION_111),
1910 &new_affiliation_111_h);
1911 if (!new_affiliation_111) {
1912 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1913 "memory for new affiliation for scsi%d.\n",
1914 instance->host->host_no);
1915 megasas_return_cmd(instance, cmd);
1916 return -ENOMEM;
1917 }
1918 memset(new_affiliation_111, 0,
1919 sizeof(struct MR_LD_VF_AFFILIATION_111));
1920 }
1921
1922 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1923
1924 dcmd->cmd = MFI_CMD_DCMD;
1925 dcmd->cmd_status = 0xFF;
1926 dcmd->sge_count = 1;
1927 dcmd->flags = MFI_FRAME_DIR_BOTH;
1928 dcmd->timeout = 0;
1929 dcmd->pad_0 = 0;
1930 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1931 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
1932
1933 if (initial)
1934 dcmd->sgl.sge32[0].phys_addr =
1935 instance->vf_affiliation_111_h;
1936 else
1937 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1938
1939 dcmd->sgl.sge32[0].length =
1940 sizeof(struct MR_LD_VF_AFFILIATION_111);
1941
1942 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1943 "scsi%d\n", instance->host->host_no);
1944
1945 megasas_issue_blocked_cmd(instance, cmd, 0);
1946
1947 if (dcmd->cmd_status) {
1948 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1949 " failed with status 0x%x for scsi%d.\n",
1950 dcmd->cmd_status, instance->host->host_no);
1951 retval = 1; /* Do a scan if we couldn't get affiliation */
1952 goto out;
1953 }
1954
1955 if (!initial) {
1956 thisVf = new_affiliation_111->thisVf;
1957 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1958 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1959 new_affiliation_111->map[ld].policy[thisVf]) {
1960 printk(KERN_WARNING "megasas: SR-IOV: "
1961 "Got new LD/VF affiliation "
1962 "for scsi%d.\n",
1963 instance->host->host_no);
1964 memcpy(instance->vf_affiliation_111,
1965 new_affiliation_111,
1966 sizeof(struct MR_LD_VF_AFFILIATION_111));
1967 retval = 1;
1968 goto out;
1969 }
1970 }
1971 out:
1972 if (new_affiliation_111) {
1973 pci_free_consistent(instance->pdev,
1974 sizeof(struct MR_LD_VF_AFFILIATION_111),
1975 new_affiliation_111,
1976 new_affiliation_111_h);
1977 }
1978
1979 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
1980 megasas_return_mfi_mpt_pthr(instance, cmd,
1981 cmd->mpt_pthr_cmd_blocked);
1982 else
1983 megasas_return_cmd(instance, cmd);
1984
1985 return retval;
1986 }
1987
1988 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1989 int initial)
1990 {
1991 struct megasas_cmd *cmd;
1992 struct megasas_dcmd_frame *dcmd;
1993 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1994 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1995 dma_addr_t new_affiliation_h;
1996 int i, j, retval = 0, found = 0, doscan = 0;
1997 u8 thisVf;
1998
1999 cmd = megasas_get_cmd(instance);
2000
2001 if (!cmd) {
2002 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
2003 "Failed to get cmd for scsi%d.\n",
2004 instance->host->host_no);
2005 return -ENOMEM;
2006 }
2007
2008 dcmd = &cmd->frame->dcmd;
2009
2010 if (!instance->vf_affiliation) {
2011 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
2012 "affiliation for scsi%d.\n", instance->host->host_no);
2013 megasas_return_cmd(instance, cmd);
2014 return -ENOMEM;
2015 }
2016
2017 if (initial)
2018 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2019 sizeof(struct MR_LD_VF_AFFILIATION));
2020 else {
2021 new_affiliation =
2022 pci_alloc_consistent(instance->pdev,
2023 (MAX_LOGICAL_DRIVES + 1) *
2024 sizeof(struct MR_LD_VF_AFFILIATION),
2025 &new_affiliation_h);
2026 if (!new_affiliation) {
2027 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
2028 "memory for new affiliation for scsi%d.\n",
2029 instance->host->host_no);
2030 megasas_return_cmd(instance, cmd);
2031 return -ENOMEM;
2032 }
2033 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2034 sizeof(struct MR_LD_VF_AFFILIATION));
2035 }
2036
2037 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2038
2039 dcmd->cmd = MFI_CMD_DCMD;
2040 dcmd->cmd_status = 0xFF;
2041 dcmd->sge_count = 1;
2042 dcmd->flags = MFI_FRAME_DIR_BOTH;
2043 dcmd->timeout = 0;
2044 dcmd->pad_0 = 0;
2045 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
2046 sizeof(struct MR_LD_VF_AFFILIATION);
2047 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
2048
2049 if (initial)
2050 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h;
2051 else
2052 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
2053
2054 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
2055 sizeof(struct MR_LD_VF_AFFILIATION);
2056
2057 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2058 "scsi%d\n", instance->host->host_no);
2059
2060 megasas_issue_blocked_cmd(instance, cmd, 0);
2061
2062 if (dcmd->cmd_status) {
2063 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2064 " failed with status 0x%x for scsi%d.\n",
2065 dcmd->cmd_status, instance->host->host_no);
2066 retval = 1; /* Do a scan if we couldn't get affiliation */
2067 goto out;
2068 }
2069
2070 if (!initial) {
2071 if (!new_affiliation->ldCount) {
2072 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2073 "affiliation for passive path for scsi%d.\n",
2074 instance->host->host_no);
2075 retval = 1;
2076 goto out;
2077 }
2078 newmap = new_affiliation->map;
2079 savedmap = instance->vf_affiliation->map;
2080 thisVf = new_affiliation->thisVf;
2081 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2082 found = 0;
2083 for (j = 0; j < instance->vf_affiliation->ldCount;
2084 j++) {
2085 if (newmap->ref.targetId ==
2086 savedmap->ref.targetId) {
2087 found = 1;
2088 if (newmap->policy[thisVf] !=
2089 savedmap->policy[thisVf]) {
2090 doscan = 1;
2091 goto out;
2092 }
2093 }
2094 savedmap = (struct MR_LD_VF_MAP *)
2095 ((unsigned char *)savedmap +
2096 savedmap->size);
2097 }
2098 if (!found && newmap->policy[thisVf] !=
2099 MR_LD_ACCESS_HIDDEN) {
2100 doscan = 1;
2101 goto out;
2102 }
2103 newmap = (struct MR_LD_VF_MAP *)
2104 ((unsigned char *)newmap + newmap->size);
2105 }
2106
2107 newmap = new_affiliation->map;
2108 savedmap = instance->vf_affiliation->map;
2109
2110 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2111 found = 0;
2112 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2113 if (savedmap->ref.targetId ==
2114 newmap->ref.targetId) {
2115 found = 1;
2116 if (savedmap->policy[thisVf] !=
2117 newmap->policy[thisVf]) {
2118 doscan = 1;
2119 goto out;
2120 }
2121 }
2122 newmap = (struct MR_LD_VF_MAP *)
2123 ((unsigned char *)newmap +
2124 newmap->size);
2125 }
2126 if (!found && savedmap->policy[thisVf] !=
2127 MR_LD_ACCESS_HIDDEN) {
2128 doscan = 1;
2129 goto out;
2130 }
2131 savedmap = (struct MR_LD_VF_MAP *)
2132 ((unsigned char *)savedmap +
2133 savedmap->size);
2134 }
2135 }
2136 out:
2137 if (doscan) {
2138 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2139 "affiliation for scsi%d.\n", instance->host->host_no);
2140 memcpy(instance->vf_affiliation, new_affiliation,
2141 new_affiliation->size);
2142 retval = 1;
2143 }
2144
2145 if (new_affiliation)
2146 pci_free_consistent(instance->pdev,
2147 (MAX_LOGICAL_DRIVES + 1) *
2148 sizeof(struct MR_LD_VF_AFFILIATION),
2149 new_affiliation, new_affiliation_h);
2150 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2151 megasas_return_mfi_mpt_pthr(instance, cmd,
2152 cmd->mpt_pthr_cmd_blocked);
2153 else
2154 megasas_return_cmd(instance, cmd);
2155
2156 return retval;
2157 }
2158
2159 /* This function will get the current SR-IOV LD/VF affiliation */
2160 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2161 int initial)
2162 {
2163 int retval;
2164
2165 if (instance->PlasmaFW111)
2166 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2167 else
2168 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2169 return retval;
2170 }
2171
2172 /* This function will tell FW to start the SR-IOV heartbeat */
2173 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2174 int initial)
2175 {
2176 struct megasas_cmd *cmd;
2177 struct megasas_dcmd_frame *dcmd;
2178 int retval = 0;
2179
2180 cmd = megasas_get_cmd(instance);
2181
2182 if (!cmd) {
2183 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2184 "Failed to get cmd for scsi%d.\n",
2185 instance->host->host_no);
2186 return -ENOMEM;
2187 }
2188
2189 dcmd = &cmd->frame->dcmd;
2190
2191 if (initial) {
2192 instance->hb_host_mem =
2193 pci_zalloc_consistent(instance->pdev,
2194 sizeof(struct MR_CTRL_HB_HOST_MEM),
2195 &instance->hb_host_mem_h);
2196 if (!instance->hb_host_mem) {
2197 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2198 " memory for heartbeat host memory for "
2199 "scsi%d.\n", instance->host->host_no);
2200 retval = -ENOMEM;
2201 goto out;
2202 }
2203 }
2204
2205 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2206
2207 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2208 dcmd->cmd = MFI_CMD_DCMD;
2209 dcmd->cmd_status = 0xFF;
2210 dcmd->sge_count = 1;
2211 dcmd->flags = MFI_FRAME_DIR_BOTH;
2212 dcmd->timeout = 0;
2213 dcmd->pad_0 = 0;
2214 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2215 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2216 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2217 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2218
2219 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2220 instance->host->host_no);
2221
2222 if (!megasas_issue_polled(instance, cmd)) {
2223 retval = 0;
2224 } else {
2225 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2226 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2227 instance->host->host_no);
2228 retval = 1;
2229 goto out;
2230 }
2231
2232
2233 if (dcmd->cmd_status) {
2234 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2235 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2236 dcmd->cmd_status,
2237 instance->host->host_no);
2238 retval = 1;
2239 goto out;
2240 }
2241
2242 out:
2243 megasas_return_cmd(instance, cmd);
2244
2245 return retval;
2246 }
2247
2248 /* Handler for SR-IOV heartbeat */
2249 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2250 {
2251 struct megasas_instance *instance =
2252 (struct megasas_instance *)instance_addr;
2253
2254 if (instance->hb_host_mem->HB.fwCounter !=
2255 instance->hb_host_mem->HB.driverCounter) {
2256 instance->hb_host_mem->HB.driverCounter =
2257 instance->hb_host_mem->HB.fwCounter;
2258 mod_timer(&instance->sriov_heartbeat_timer,
2259 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2260 } else {
2261 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2262 "completed for scsi%d\n", instance->host->host_no);
2263 schedule_work(&instance->work_init);
2264 }
2265 }
2266
2267 /**
2268 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2269 * @instance: Adapter soft state
2270 *
2271 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2272 * complete all its outstanding commands. Returns error if one or more IOs
2273 * are pending after this time period. It also marks the controller dead.
2274 */
2275 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2276 {
2277 int i;
2278 u32 reset_index;
2279 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2280 u8 adprecovery;
2281 unsigned long flags;
2282 struct list_head clist_local;
2283 struct megasas_cmd *reset_cmd;
2284 u32 fw_state;
2285 u8 kill_adapter_flag;
2286
2287 spin_lock_irqsave(&instance->hba_lock, flags);
2288 adprecovery = instance->adprecovery;
2289 spin_unlock_irqrestore(&instance->hba_lock, flags);
2290
2291 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2292
2293 INIT_LIST_HEAD(&clist_local);
2294 spin_lock_irqsave(&instance->hba_lock, flags);
2295 list_splice_init(&instance->internal_reset_pending_q,
2296 &clist_local);
2297 spin_unlock_irqrestore(&instance->hba_lock, flags);
2298
2299 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2300 for (i = 0; i < wait_time; i++) {
2301 msleep(1000);
2302 spin_lock_irqsave(&instance->hba_lock, flags);
2303 adprecovery = instance->adprecovery;
2304 spin_unlock_irqrestore(&instance->hba_lock, flags);
2305 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2306 break;
2307 }
2308
2309 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2310 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2311 spin_lock_irqsave(&instance->hba_lock, flags);
2312 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2313 spin_unlock_irqrestore(&instance->hba_lock, flags);
2314 return FAILED;
2315 }
2316
2317 reset_index = 0;
2318 while (!list_empty(&clist_local)) {
2319 reset_cmd = list_entry((&clist_local)->next,
2320 struct megasas_cmd, list);
2321 list_del_init(&reset_cmd->list);
2322 if (reset_cmd->scmd) {
2323 reset_cmd->scmd->result = DID_RESET << 16;
2324 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
2325 reset_index, reset_cmd,
2326 reset_cmd->scmd->cmnd[0]);
2327
2328 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2329 megasas_return_cmd(instance, reset_cmd);
2330 } else if (reset_cmd->sync_cmd) {
2331 printk(KERN_NOTICE "megasas:%p synch cmds"
2332 "reset queue\n",
2333 reset_cmd);
2334
2335 reset_cmd->cmd_status = ENODATA;
2336 instance->instancet->fire_cmd(instance,
2337 reset_cmd->frame_phys_addr,
2338 0, instance->reg_set);
2339 } else {
2340 printk(KERN_NOTICE "megasas: %p unexpected"
2341 "cmds lst\n",
2342 reset_cmd);
2343 }
2344 reset_index++;
2345 }
2346
2347 return SUCCESS;
2348 }
2349
2350 for (i = 0; i < resetwaittime; i++) {
2351
2352 int outstanding = atomic_read(&instance->fw_outstanding);
2353
2354 if (!outstanding)
2355 break;
2356
2357 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2358 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2359 "commands to complete\n",i,outstanding);
2360 /*
2361 * Call cmd completion routine. Cmd to be
2362 * be completed directly without depending on isr.
2363 */
2364 megasas_complete_cmd_dpc((unsigned long)instance);
2365 }
2366
2367 msleep(1000);
2368 }
2369
2370 i = 0;
2371 kill_adapter_flag = 0;
2372 do {
2373 fw_state = instance->instancet->read_fw_status_reg(
2374 instance->reg_set) & MFI_STATE_MASK;
2375 if ((fw_state == MFI_STATE_FAULT) &&
2376 (instance->disableOnlineCtrlReset == 0)) {
2377 if (i == 3) {
2378 kill_adapter_flag = 2;
2379 break;
2380 }
2381 megasas_do_ocr(instance);
2382 kill_adapter_flag = 1;
2383
2384 /* wait for 1 secs to let FW finish the pending cmds */
2385 msleep(1000);
2386 }
2387 i++;
2388 } while (i <= 3);
2389
2390 if (atomic_read(&instance->fw_outstanding) &&
2391 !kill_adapter_flag) {
2392 if (instance->disableOnlineCtrlReset == 0) {
2393
2394 megasas_do_ocr(instance);
2395
2396 /* wait for 5 secs to let FW finish the pending cmds */
2397 for (i = 0; i < wait_time; i++) {
2398 int outstanding =
2399 atomic_read(&instance->fw_outstanding);
2400 if (!outstanding)
2401 return SUCCESS;
2402 msleep(1000);
2403 }
2404 }
2405 }
2406
2407 if (atomic_read(&instance->fw_outstanding) ||
2408 (kill_adapter_flag == 2)) {
2409 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
2410 /*
2411 * Send signal to FW to stop processing any pending cmds.
2412 * The controller will be taken offline by the OS now.
2413 */
2414 if ((instance->pdev->device ==
2415 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2416 (instance->pdev->device ==
2417 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2418 writel(MFI_STOP_ADP,
2419 &instance->reg_set->doorbell);
2420 } else {
2421 writel(MFI_STOP_ADP,
2422 &instance->reg_set->inbound_doorbell);
2423 }
2424 megasas_dump_pending_frames(instance);
2425 spin_lock_irqsave(&instance->hba_lock, flags);
2426 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2427 spin_unlock_irqrestore(&instance->hba_lock, flags);
2428 return FAILED;
2429 }
2430
2431 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2432
2433 return SUCCESS;
2434 }
2435
2436 /**
2437 * megasas_generic_reset - Generic reset routine
2438 * @scmd: Mid-layer SCSI command
2439 *
2440 * This routine implements a generic reset handler for device, bus and host
2441 * reset requests. Device, bus and host specific reset handlers can use this
2442 * function after they do their specific tasks.
2443 */
2444 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2445 {
2446 int ret_val;
2447 struct megasas_instance *instance;
2448
2449 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2450
2451 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2452 scmd->cmnd[0], scmd->retries);
2453
2454 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2455 printk(KERN_ERR "megasas: cannot recover from previous reset "
2456 "failures\n");
2457 return FAILED;
2458 }
2459
2460 ret_val = megasas_wait_for_outstanding(instance);
2461 if (ret_val == SUCCESS)
2462 printk(KERN_NOTICE "megasas: reset successful \n");
2463 else
2464 printk(KERN_ERR "megasas: failed to do reset\n");
2465
2466 return ret_val;
2467 }
2468
2469 /**
2470 * megasas_reset_timer - quiesce the adapter if required
2471 * @scmd: scsi cmnd
2472 *
2473 * Sets the FW busy flag and reduces the host->can_queue if the
2474 * cmd has not been completed within the timeout period.
2475 */
2476 static enum
2477 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2478 {
2479 struct megasas_instance *instance;
2480 unsigned long flags;
2481
2482 if (time_after(jiffies, scmd->jiffies_at_alloc +
2483 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
2484 return BLK_EH_NOT_HANDLED;
2485 }
2486
2487 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2488 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2489 /* FW is busy, throttle IO */
2490 spin_lock_irqsave(instance->host->host_lock, flags);
2491
2492 instance->host->can_queue = instance->throttlequeuedepth;
2493 instance->last_time = jiffies;
2494 instance->flag |= MEGASAS_FW_BUSY;
2495
2496 spin_unlock_irqrestore(instance->host->host_lock, flags);
2497 }
2498 return BLK_EH_RESET_TIMER;
2499 }
2500
2501 /**
2502 * megasas_reset_device - Device reset handler entry point
2503 */
2504 static int megasas_reset_device(struct scsi_cmnd *scmd)
2505 {
2506 int ret;
2507
2508 /*
2509 * First wait for all commands to complete
2510 */
2511 ret = megasas_generic_reset(scmd);
2512
2513 return ret;
2514 }
2515
2516 /**
2517 * megasas_reset_bus_host - Bus & host reset handler entry point
2518 */
2519 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2520 {
2521 int ret;
2522 struct megasas_instance *instance;
2523 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2524
2525 /*
2526 * First wait for all commands to complete
2527 */
2528 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
2529 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
2530 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2531 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2532 ret = megasas_reset_fusion(scmd->device->host, 1);
2533 else
2534 ret = megasas_generic_reset(scmd);
2535
2536 return ret;
2537 }
2538
2539 /**
2540 * megasas_bios_param - Returns disk geometry for a disk
2541 * @sdev: device handle
2542 * @bdev: block device
2543 * @capacity: drive capacity
2544 * @geom: geometry parameters
2545 */
2546 static int
2547 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2548 sector_t capacity, int geom[])
2549 {
2550 int heads;
2551 int sectors;
2552 sector_t cylinders;
2553 unsigned long tmp;
2554 /* Default heads (64) & sectors (32) */
2555 heads = 64;
2556 sectors = 32;
2557
2558 tmp = heads * sectors;
2559 cylinders = capacity;
2560
2561 sector_div(cylinders, tmp);
2562
2563 /*
2564 * Handle extended translation size for logical drives > 1Gb
2565 */
2566
2567 if (capacity >= 0x200000) {
2568 heads = 255;
2569 sectors = 63;
2570 tmp = heads*sectors;
2571 cylinders = capacity;
2572 sector_div(cylinders, tmp);
2573 }
2574
2575 geom[0] = heads;
2576 geom[1] = sectors;
2577 geom[2] = cylinders;
2578
2579 return 0;
2580 }
2581
2582 static void megasas_aen_polling(struct work_struct *work);
2583
2584 /**
2585 * megasas_service_aen - Processes an event notification
2586 * @instance: Adapter soft state
2587 * @cmd: AEN command completed by the ISR
2588 *
2589 * For AEN, driver sends a command down to FW that is held by the FW till an
2590 * event occurs. When an event of interest occurs, FW completes the command
2591 * that it was previously holding.
2592 *
2593 * This routines sends SIGIO signal to processes that have registered with the
2594 * driver for AEN.
2595 */
2596 static void
2597 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2598 {
2599 unsigned long flags;
2600 /*
2601 * Don't signal app if it is just an aborted previously registered aen
2602 */
2603 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2604 spin_lock_irqsave(&poll_aen_lock, flags);
2605 megasas_poll_wait_aen = 1;
2606 spin_unlock_irqrestore(&poll_aen_lock, flags);
2607 wake_up(&megasas_poll_wait);
2608 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2609 }
2610 else
2611 cmd->abort_aen = 0;
2612
2613 instance->aen_cmd = NULL;
2614
2615 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2616 megasas_return_mfi_mpt_pthr(instance, cmd,
2617 cmd->mpt_pthr_cmd_blocked);
2618 else
2619 megasas_return_cmd(instance, cmd);
2620
2621 if ((instance->unload == 0) &&
2622 ((instance->issuepend_done == 1))) {
2623 struct megasas_aen_event *ev;
2624 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2625 if (!ev) {
2626 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2627 } else {
2628 ev->instance = instance;
2629 instance->ev = ev;
2630 INIT_DELAYED_WORK(&ev->hotplug_work,
2631 megasas_aen_polling);
2632 schedule_delayed_work(&ev->hotplug_work, 0);
2633 }
2634 }
2635 }
2636
2637 static ssize_t
2638 megasas_fw_crash_buffer_store(struct device *cdev,
2639 struct device_attribute *attr, const char *buf, size_t count)
2640 {
2641 struct Scsi_Host *shost = class_to_shost(cdev);
2642 struct megasas_instance *instance =
2643 (struct megasas_instance *) shost->hostdata;
2644 int val = 0;
2645 unsigned long flags;
2646
2647 if (kstrtoint(buf, 0, &val) != 0)
2648 return -EINVAL;
2649
2650 spin_lock_irqsave(&instance->crashdump_lock, flags);
2651 instance->fw_crash_buffer_offset = val;
2652 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2653 return strlen(buf);
2654 }
2655
2656 static ssize_t
2657 megasas_fw_crash_buffer_show(struct device *cdev,
2658 struct device_attribute *attr, char *buf)
2659 {
2660 struct Scsi_Host *shost = class_to_shost(cdev);
2661 struct megasas_instance *instance =
2662 (struct megasas_instance *) shost->hostdata;
2663 u32 size;
2664 unsigned long buff_addr;
2665 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2666 unsigned long src_addr;
2667 unsigned long flags;
2668 u32 buff_offset;
2669
2670 spin_lock_irqsave(&instance->crashdump_lock, flags);
2671 buff_offset = instance->fw_crash_buffer_offset;
2672 if (!instance->crash_dump_buf &&
2673 !((instance->fw_crash_state == AVAILABLE) ||
2674 (instance->fw_crash_state == COPYING))) {
2675 dev_err(&instance->pdev->dev,
2676 "Firmware crash dump is not available\n");
2677 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2678 return -EINVAL;
2679 }
2680
2681 buff_addr = (unsigned long) buf;
2682
2683 if (buff_offset >
2684 (instance->fw_crash_buffer_size * dmachunk)) {
2685 dev_err(&instance->pdev->dev,
2686 "Firmware crash dump offset is out of range\n");
2687 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2688 return 0;
2689 }
2690
2691 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2692 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2693
2694 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2695 (buff_offset % dmachunk);
2696 memcpy(buf, (void *)src_addr, size);
2697 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2698
2699 return size;
2700 }
2701
2702 static ssize_t
2703 megasas_fw_crash_buffer_size_show(struct device *cdev,
2704 struct device_attribute *attr, char *buf)
2705 {
2706 struct Scsi_Host *shost = class_to_shost(cdev);
2707 struct megasas_instance *instance =
2708 (struct megasas_instance *) shost->hostdata;
2709
2710 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2711 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2712 }
2713
2714 static ssize_t
2715 megasas_fw_crash_state_store(struct device *cdev,
2716 struct device_attribute *attr, const char *buf, size_t count)
2717 {
2718 struct Scsi_Host *shost = class_to_shost(cdev);
2719 struct megasas_instance *instance =
2720 (struct megasas_instance *) shost->hostdata;
2721 int val = 0;
2722 unsigned long flags;
2723
2724 if (kstrtoint(buf, 0, &val) != 0)
2725 return -EINVAL;
2726
2727 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2728 dev_err(&instance->pdev->dev, "application updates invalid "
2729 "firmware crash state\n");
2730 return -EINVAL;
2731 }
2732
2733 instance->fw_crash_state = val;
2734
2735 if ((val == COPIED) || (val == COPY_ERROR)) {
2736 spin_lock_irqsave(&instance->crashdump_lock, flags);
2737 megasas_free_host_crash_buffer(instance);
2738 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2739 if (val == COPY_ERROR)
2740 dev_info(&instance->pdev->dev, "application failed to "
2741 "copy Firmware crash dump\n");
2742 else
2743 dev_info(&instance->pdev->dev, "Firmware crash dump "
2744 "copied successfully\n");
2745 }
2746 return strlen(buf);
2747 }
2748
2749 static ssize_t
2750 megasas_fw_crash_state_show(struct device *cdev,
2751 struct device_attribute *attr, char *buf)
2752 {
2753 struct Scsi_Host *shost = class_to_shost(cdev);
2754 struct megasas_instance *instance =
2755 (struct megasas_instance *) shost->hostdata;
2756 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2757 }
2758
2759 static ssize_t
2760 megasas_page_size_show(struct device *cdev,
2761 struct device_attribute *attr, char *buf)
2762 {
2763 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2764 }
2765
2766 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2767 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2768 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2769 megasas_fw_crash_buffer_size_show, NULL);
2770 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2771 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2772 static DEVICE_ATTR(page_size, S_IRUGO,
2773 megasas_page_size_show, NULL);
2774
2775 struct device_attribute *megaraid_host_attrs[] = {
2776 &dev_attr_fw_crash_buffer_size,
2777 &dev_attr_fw_crash_buffer,
2778 &dev_attr_fw_crash_state,
2779 &dev_attr_page_size,
2780 NULL,
2781 };
2782
2783 /*
2784 * Scsi host template for megaraid_sas driver
2785 */
2786 static struct scsi_host_template megasas_template = {
2787
2788 .module = THIS_MODULE,
2789 .name = "LSI SAS based MegaRAID driver",
2790 .proc_name = "megaraid_sas",
2791 .slave_configure = megasas_slave_configure,
2792 .slave_alloc = megasas_slave_alloc,
2793 .queuecommand = megasas_queue_command,
2794 .eh_device_reset_handler = megasas_reset_device,
2795 .eh_bus_reset_handler = megasas_reset_bus_host,
2796 .eh_host_reset_handler = megasas_reset_bus_host,
2797 .eh_timed_out = megasas_reset_timer,
2798 .shost_attrs = megaraid_host_attrs,
2799 .bios_param = megasas_bios_param,
2800 .use_clustering = ENABLE_CLUSTERING,
2801 .change_queue_depth = scsi_change_queue_depth,
2802 .no_write_same = 1,
2803 };
2804
2805 /**
2806 * megasas_complete_int_cmd - Completes an internal command
2807 * @instance: Adapter soft state
2808 * @cmd: Command to be completed
2809 *
2810 * The megasas_issue_blocked_cmd() function waits for a command to complete
2811 * after it issues a command. This function wakes up that waiting routine by
2812 * calling wake_up() on the wait queue.
2813 */
2814 static void
2815 megasas_complete_int_cmd(struct megasas_instance *instance,
2816 struct megasas_cmd *cmd)
2817 {
2818 cmd->cmd_status = cmd->frame->io.cmd_status;
2819
2820 if (cmd->cmd_status == ENODATA) {
2821 cmd->cmd_status = 0;
2822 }
2823 wake_up(&instance->int_cmd_wait_q);
2824 }
2825
2826 /**
2827 * megasas_complete_abort - Completes aborting a command
2828 * @instance: Adapter soft state
2829 * @cmd: Cmd that was issued to abort another cmd
2830 *
2831 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2832 * after it issues an abort on a previously issued command. This function
2833 * wakes up all functions waiting on the same wait queue.
2834 */
2835 static void
2836 megasas_complete_abort(struct megasas_instance *instance,
2837 struct megasas_cmd *cmd)
2838 {
2839 if (cmd->sync_cmd) {
2840 cmd->sync_cmd = 0;
2841 cmd->cmd_status = 0;
2842 wake_up(&instance->abort_cmd_wait_q);
2843 }
2844
2845 return;
2846 }
2847
2848 /**
2849 * megasas_complete_cmd - Completes a command
2850 * @instance: Adapter soft state
2851 * @cmd: Command to be completed
2852 * @alt_status: If non-zero, use this value as status to
2853 * SCSI mid-layer instead of the value returned
2854 * by the FW. This should be used if caller wants
2855 * an alternate status (as in the case of aborted
2856 * commands)
2857 */
2858 void
2859 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2860 u8 alt_status)
2861 {
2862 int exception = 0;
2863 struct megasas_header *hdr = &cmd->frame->hdr;
2864 unsigned long flags;
2865 struct fusion_context *fusion = instance->ctrl_context;
2866 u32 opcode;
2867
2868 /* flag for the retry reset */
2869 cmd->retry_for_fw_reset = 0;
2870
2871 if (cmd->scmd)
2872 cmd->scmd->SCp.ptr = NULL;
2873
2874 switch (hdr->cmd) {
2875 case MFI_CMD_INVALID:
2876 /* Some older 1068 controller FW may keep a pended
2877 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2878 when booting the kdump kernel. Ignore this command to
2879 prevent a kernel panic on shutdown of the kdump kernel. */
2880 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2881 "completed.\n");
2882 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2883 "other than PERC5, please upgrade your firmware.\n");
2884 break;
2885 case MFI_CMD_PD_SCSI_IO:
2886 case MFI_CMD_LD_SCSI_IO:
2887
2888 /*
2889 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2890 * issued either through an IO path or an IOCTL path. If it
2891 * was via IOCTL, we will send it to internal completion.
2892 */
2893 if (cmd->sync_cmd) {
2894 cmd->sync_cmd = 0;
2895 megasas_complete_int_cmd(instance, cmd);
2896 break;
2897 }
2898
2899 case MFI_CMD_LD_READ:
2900 case MFI_CMD_LD_WRITE:
2901
2902 if (alt_status) {
2903 cmd->scmd->result = alt_status << 16;
2904 exception = 1;
2905 }
2906
2907 if (exception) {
2908
2909 atomic_dec(&instance->fw_outstanding);
2910
2911 scsi_dma_unmap(cmd->scmd);
2912 cmd->scmd->scsi_done(cmd->scmd);
2913 megasas_return_cmd(instance, cmd);
2914
2915 break;
2916 }
2917
2918 switch (hdr->cmd_status) {
2919
2920 case MFI_STAT_OK:
2921 cmd->scmd->result = DID_OK << 16;
2922 break;
2923
2924 case MFI_STAT_SCSI_IO_FAILED:
2925 case MFI_STAT_LD_INIT_IN_PROGRESS:
2926 cmd->scmd->result =
2927 (DID_ERROR << 16) | hdr->scsi_status;
2928 break;
2929
2930 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2931
2932 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2933
2934 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2935 memset(cmd->scmd->sense_buffer, 0,
2936 SCSI_SENSE_BUFFERSIZE);
2937 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2938 hdr->sense_len);
2939
2940 cmd->scmd->result |= DRIVER_SENSE << 24;
2941 }
2942
2943 break;
2944
2945 case MFI_STAT_LD_OFFLINE:
2946 case MFI_STAT_DEVICE_NOT_FOUND:
2947 cmd->scmd->result = DID_BAD_TARGET << 16;
2948 break;
2949
2950 default:
2951 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2952 hdr->cmd_status);
2953 cmd->scmd->result = DID_ERROR << 16;
2954 break;
2955 }
2956
2957 atomic_dec(&instance->fw_outstanding);
2958
2959 scsi_dma_unmap(cmd->scmd);
2960 cmd->scmd->scsi_done(cmd->scmd);
2961 megasas_return_cmd(instance, cmd);
2962
2963 break;
2964
2965 case MFI_CMD_SMP:
2966 case MFI_CMD_STP:
2967 case MFI_CMD_DCMD:
2968 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
2969 /* Check for LD map update */
2970 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2971 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
2972 fusion->fast_path_io = 0;
2973 spin_lock_irqsave(instance->host->host_lock, flags);
2974 if (cmd->frame->hdr.cmd_status != 0) {
2975 if (cmd->frame->hdr.cmd_status !=
2976 MFI_STAT_NOT_FOUND)
2977 printk(KERN_WARNING "megasas: map sync"
2978 "failed, status = 0x%x.\n",
2979 cmd->frame->hdr.cmd_status);
2980 else {
2981 megasas_return_mfi_mpt_pthr(instance,
2982 cmd, cmd->mpt_pthr_cmd_blocked);
2983 spin_unlock_irqrestore(
2984 instance->host->host_lock,
2985 flags);
2986 break;
2987 }
2988 } else
2989 instance->map_id++;
2990 megasas_return_mfi_mpt_pthr(instance, cmd,
2991 cmd->mpt_pthr_cmd_blocked);
2992
2993 /*
2994 * Set fast path IO to ZERO.
2995 * Validate Map will set proper value.
2996 * Meanwhile all IOs will go as LD IO.
2997 */
2998 if (MR_ValidateMapInfo(instance))
2999 fusion->fast_path_io = 1;
3000 else
3001 fusion->fast_path_io = 0;
3002 megasas_sync_map_info(instance);
3003 spin_unlock_irqrestore(instance->host->host_lock,
3004 flags);
3005 break;
3006 }
3007 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3008 opcode == MR_DCMD_CTRL_EVENT_GET) {
3009 spin_lock_irqsave(&poll_aen_lock, flags);
3010 megasas_poll_wait_aen = 0;
3011 spin_unlock_irqrestore(&poll_aen_lock, flags);
3012 }
3013
3014 /*
3015 * See if got an event notification
3016 */
3017 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3018 megasas_service_aen(instance, cmd);
3019 else
3020 megasas_complete_int_cmd(instance, cmd);
3021
3022 break;
3023
3024 case MFI_CMD_ABORT:
3025 /*
3026 * Cmd issued to abort another cmd returned
3027 */
3028 megasas_complete_abort(instance, cmd);
3029 break;
3030
3031 default:
3032 printk("megasas: Unknown command completed! [0x%X]\n",
3033 hdr->cmd);
3034 break;
3035 }
3036 }
3037
3038 /**
3039 * megasas_issue_pending_cmds_again - issue all pending cmds
3040 * in FW again because of the fw reset
3041 * @instance: Adapter soft state
3042 */
3043 static inline void
3044 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3045 {
3046 struct megasas_cmd *cmd;
3047 struct list_head clist_local;
3048 union megasas_evt_class_locale class_locale;
3049 unsigned long flags;
3050 u32 seq_num;
3051
3052 INIT_LIST_HEAD(&clist_local);
3053 spin_lock_irqsave(&instance->hba_lock, flags);
3054 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3055 spin_unlock_irqrestore(&instance->hba_lock, flags);
3056
3057 while (!list_empty(&clist_local)) {
3058 cmd = list_entry((&clist_local)->next,
3059 struct megasas_cmd, list);
3060 list_del_init(&cmd->list);
3061
3062 if (cmd->sync_cmd || cmd->scmd) {
3063 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3064 "detected to be pending while HBA reset.\n",
3065 cmd, cmd->scmd, cmd->sync_cmd);
3066
3067 cmd->retry_for_fw_reset++;
3068
3069 if (cmd->retry_for_fw_reset == 3) {
3070 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3071 "was tried multiple times during reset."
3072 "Shutting down the HBA\n",
3073 cmd, cmd->scmd, cmd->sync_cmd);
3074 instance->instancet->disable_intr(instance);
3075 atomic_set(&instance->fw_reset_no_pci_access, 1);
3076 megaraid_sas_kill_hba(instance);
3077 return;
3078 }
3079 }
3080
3081 if (cmd->sync_cmd == 1) {
3082 if (cmd->scmd) {
3083 printk(KERN_NOTICE "megaraid_sas: unexpected"
3084 "cmd attached to internal command!\n");
3085 }
3086 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3087 "on the internal reset queue,"
3088 "issue it again.\n", cmd);
3089 cmd->cmd_status = ENODATA;
3090 instance->instancet->fire_cmd(instance,
3091 cmd->frame_phys_addr ,
3092 0, instance->reg_set);
3093 } else if (cmd->scmd) {
3094 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
3095 "detected on the internal queue, issue again.\n",
3096 cmd, cmd->scmd->cmnd[0]);
3097
3098 atomic_inc(&instance->fw_outstanding);
3099 instance->instancet->fire_cmd(instance,
3100 cmd->frame_phys_addr,
3101 cmd->frame_count-1, instance->reg_set);
3102 } else {
3103 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3104 "internal reset defer list while re-issue!!\n",
3105 cmd);
3106 }
3107 }
3108
3109 if (instance->aen_cmd) {
3110 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3111 megasas_return_cmd(instance, instance->aen_cmd);
3112
3113 instance->aen_cmd = NULL;
3114 }
3115
3116 /*
3117 * Initiate AEN (Asynchronous Event Notification)
3118 */
3119 seq_num = instance->last_seq_num;
3120 class_locale.members.reserved = 0;
3121 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3122 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3123
3124 megasas_register_aen(instance, seq_num, class_locale.word);
3125 }
3126
3127 /**
3128 * Move the internal reset pending commands to a deferred queue.
3129 *
3130 * We move the commands pending at internal reset time to a
3131 * pending queue. This queue would be flushed after successful
3132 * completion of the internal reset sequence. if the internal reset
3133 * did not complete in time, the kernel reset handler would flush
3134 * these commands.
3135 **/
3136 static void
3137 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3138 {
3139 struct megasas_cmd *cmd;
3140 int i;
3141 u32 max_cmd = instance->max_fw_cmds;
3142 u32 defer_index;
3143 unsigned long flags;
3144
3145 defer_index = 0;
3146 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3147 for (i = 0; i < max_cmd; i++) {
3148 cmd = instance->cmd_list[i];
3149 if (cmd->sync_cmd == 1 || cmd->scmd) {
3150 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3151 "on the defer queue as internal\n",
3152 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3153
3154 if (!list_empty(&cmd->list)) {
3155 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3156 " moving this cmd:%p, %d %p, it was"
3157 "discovered on some list?\n",
3158 cmd, cmd->sync_cmd, cmd->scmd);
3159
3160 list_del_init(&cmd->list);
3161 }
3162 defer_index++;
3163 list_add_tail(&cmd->list,
3164 &instance->internal_reset_pending_q);
3165 }
3166 }
3167 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3168 }
3169
3170
3171 static void
3172 process_fw_state_change_wq(struct work_struct *work)
3173 {
3174 struct megasas_instance *instance =
3175 container_of(work, struct megasas_instance, work_init);
3176 u32 wait;
3177 unsigned long flags;
3178
3179 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3180 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3181 instance->adprecovery);
3182 return ;
3183 }
3184
3185 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3186 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3187 "state, restarting it...\n");
3188
3189 instance->instancet->disable_intr(instance);
3190 atomic_set(&instance->fw_outstanding, 0);
3191
3192 atomic_set(&instance->fw_reset_no_pci_access, 1);
3193 instance->instancet->adp_reset(instance, instance->reg_set);
3194 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3195
3196 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3197 "initiating next stage...\n");
3198
3199 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3200 "state 2 starting...\n");
3201
3202 /*waitting for about 20 second before start the second init*/
3203 for (wait = 0; wait < 30; wait++) {
3204 msleep(1000);
3205 }
3206
3207 if (megasas_transition_to_ready(instance, 1)) {
3208 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3209
3210 atomic_set(&instance->fw_reset_no_pci_access, 1);
3211 megaraid_sas_kill_hba(instance);
3212 return ;
3213 }
3214
3215 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3216 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3217 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3218 ) {
3219 *instance->consumer = *instance->producer;
3220 } else {
3221 *instance->consumer = 0;
3222 *instance->producer = 0;
3223 }
3224
3225 megasas_issue_init_mfi(instance);
3226
3227 spin_lock_irqsave(&instance->hba_lock, flags);
3228 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3229 spin_unlock_irqrestore(&instance->hba_lock, flags);
3230 instance->instancet->enable_intr(instance);
3231
3232 megasas_issue_pending_cmds_again(instance);
3233 instance->issuepend_done = 1;
3234 }
3235 return ;
3236 }
3237
3238 /**
3239 * megasas_deplete_reply_queue - Processes all completed commands
3240 * @instance: Adapter soft state
3241 * @alt_status: Alternate status to be returned to
3242 * SCSI mid-layer instead of the status
3243 * returned by the FW
3244 * Note: this must be called with hba lock held
3245 */
3246 static int
3247 megasas_deplete_reply_queue(struct megasas_instance *instance,
3248 u8 alt_status)
3249 {
3250 u32 mfiStatus;
3251 u32 fw_state;
3252
3253 if ((mfiStatus = instance->instancet->check_reset(instance,
3254 instance->reg_set)) == 1) {
3255 return IRQ_HANDLED;
3256 }
3257
3258 if ((mfiStatus = instance->instancet->clear_intr(
3259 instance->reg_set)
3260 ) == 0) {
3261 /* Hardware may not set outbound_intr_status in MSI-X mode */
3262 if (!instance->msix_vectors)
3263 return IRQ_NONE;
3264 }
3265
3266 instance->mfiStatus = mfiStatus;
3267
3268 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3269 fw_state = instance->instancet->read_fw_status_reg(
3270 instance->reg_set) & MFI_STATE_MASK;
3271
3272 if (fw_state != MFI_STATE_FAULT) {
3273 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3274 fw_state);
3275 }
3276
3277 if ((fw_state == MFI_STATE_FAULT) &&
3278 (instance->disableOnlineCtrlReset == 0)) {
3279 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3280
3281 if ((instance->pdev->device ==
3282 PCI_DEVICE_ID_LSI_SAS1064R) ||
3283 (instance->pdev->device ==
3284 PCI_DEVICE_ID_DELL_PERC5) ||
3285 (instance->pdev->device ==
3286 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3287
3288 *instance->consumer =
3289 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3290 }
3291
3292
3293 instance->instancet->disable_intr(instance);
3294 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3295 instance->issuepend_done = 0;
3296
3297 atomic_set(&instance->fw_outstanding, 0);
3298 megasas_internal_reset_defer_cmds(instance);
3299
3300 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3301 fw_state, instance->adprecovery);
3302
3303 schedule_work(&instance->work_init);
3304 return IRQ_HANDLED;
3305
3306 } else {
3307 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3308 fw_state, instance->disableOnlineCtrlReset);
3309 }
3310 }
3311
3312 tasklet_schedule(&instance->isr_tasklet);
3313 return IRQ_HANDLED;
3314 }
3315 /**
3316 * megasas_isr - isr entry point
3317 */
3318 static irqreturn_t megasas_isr(int irq, void *devp)
3319 {
3320 struct megasas_irq_context *irq_context = devp;
3321 struct megasas_instance *instance = irq_context->instance;
3322 unsigned long flags;
3323 irqreturn_t rc;
3324
3325 if (atomic_read(&instance->fw_reset_no_pci_access))
3326 return IRQ_HANDLED;
3327
3328 spin_lock_irqsave(&instance->hba_lock, flags);
3329 rc = megasas_deplete_reply_queue(instance, DID_OK);
3330 spin_unlock_irqrestore(&instance->hba_lock, flags);
3331
3332 return rc;
3333 }
3334
3335 /**
3336 * megasas_transition_to_ready - Move the FW to READY state
3337 * @instance: Adapter soft state
3338 *
3339 * During the initialization, FW passes can potentially be in any one of
3340 * several possible states. If the FW in operational, waiting-for-handshake
3341 * states, driver must take steps to bring it to ready state. Otherwise, it
3342 * has to wait for the ready state.
3343 */
3344 int
3345 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3346 {
3347 int i;
3348 u8 max_wait;
3349 u32 fw_state;
3350 u32 cur_state;
3351 u32 abs_state, curr_abs_state;
3352
3353 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3354 fw_state = abs_state & MFI_STATE_MASK;
3355
3356 if (fw_state != MFI_STATE_READY)
3357 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3358 " state\n");
3359
3360 while (fw_state != MFI_STATE_READY) {
3361
3362 switch (fw_state) {
3363
3364 case MFI_STATE_FAULT:
3365 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
3366 if (ocr) {
3367 max_wait = MEGASAS_RESET_WAIT_TIME;
3368 cur_state = MFI_STATE_FAULT;
3369 break;
3370 } else
3371 return -ENODEV;
3372
3373 case MFI_STATE_WAIT_HANDSHAKE:
3374 /*
3375 * Set the CLR bit in inbound doorbell
3376 */
3377 if ((instance->pdev->device ==
3378 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3379 (instance->pdev->device ==
3380 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3381 (instance->pdev->device ==
3382 PCI_DEVICE_ID_LSI_FUSION) ||
3383 (instance->pdev->device ==
3384 PCI_DEVICE_ID_LSI_PLASMA) ||
3385 (instance->pdev->device ==
3386 PCI_DEVICE_ID_LSI_INVADER) ||
3387 (instance->pdev->device ==
3388 PCI_DEVICE_ID_LSI_FURY)) {
3389 writel(
3390 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3391 &instance->reg_set->doorbell);
3392 } else {
3393 writel(
3394 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3395 &instance->reg_set->inbound_doorbell);
3396 }
3397
3398 max_wait = MEGASAS_RESET_WAIT_TIME;
3399 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3400 break;
3401
3402 case MFI_STATE_BOOT_MESSAGE_PENDING:
3403 if ((instance->pdev->device ==
3404 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3405 (instance->pdev->device ==
3406 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3407 (instance->pdev->device ==
3408 PCI_DEVICE_ID_LSI_FUSION) ||
3409 (instance->pdev->device ==
3410 PCI_DEVICE_ID_LSI_PLASMA) ||
3411 (instance->pdev->device ==
3412 PCI_DEVICE_ID_LSI_INVADER) ||
3413 (instance->pdev->device ==
3414 PCI_DEVICE_ID_LSI_FURY)) {
3415 writel(MFI_INIT_HOTPLUG,
3416 &instance->reg_set->doorbell);
3417 } else
3418 writel(MFI_INIT_HOTPLUG,
3419 &instance->reg_set->inbound_doorbell);
3420
3421 max_wait = MEGASAS_RESET_WAIT_TIME;
3422 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3423 break;
3424
3425 case MFI_STATE_OPERATIONAL:
3426 /*
3427 * Bring it to READY state; assuming max wait 10 secs
3428 */
3429 instance->instancet->disable_intr(instance);
3430 if ((instance->pdev->device ==
3431 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3432 (instance->pdev->device ==
3433 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3434 (instance->pdev->device
3435 == PCI_DEVICE_ID_LSI_FUSION) ||
3436 (instance->pdev->device
3437 == PCI_DEVICE_ID_LSI_PLASMA) ||
3438 (instance->pdev->device
3439 == PCI_DEVICE_ID_LSI_INVADER) ||
3440 (instance->pdev->device
3441 == PCI_DEVICE_ID_LSI_FURY)) {
3442 writel(MFI_RESET_FLAGS,
3443 &instance->reg_set->doorbell);
3444 if ((instance->pdev->device ==
3445 PCI_DEVICE_ID_LSI_FUSION) ||
3446 (instance->pdev->device ==
3447 PCI_DEVICE_ID_LSI_PLASMA) ||
3448 (instance->pdev->device ==
3449 PCI_DEVICE_ID_LSI_INVADER) ||
3450 (instance->pdev->device ==
3451 PCI_DEVICE_ID_LSI_FURY)) {
3452 for (i = 0; i < (10 * 1000); i += 20) {
3453 if (readl(
3454 &instance->
3455 reg_set->
3456 doorbell) & 1)
3457 msleep(20);
3458 else
3459 break;
3460 }
3461 }
3462 } else
3463 writel(MFI_RESET_FLAGS,
3464 &instance->reg_set->inbound_doorbell);
3465
3466 max_wait = MEGASAS_RESET_WAIT_TIME;
3467 cur_state = MFI_STATE_OPERATIONAL;
3468 break;
3469
3470 case MFI_STATE_UNDEFINED:
3471 /*
3472 * This state should not last for more than 2 seconds
3473 */
3474 max_wait = MEGASAS_RESET_WAIT_TIME;
3475 cur_state = MFI_STATE_UNDEFINED;
3476 break;
3477
3478 case MFI_STATE_BB_INIT:
3479 max_wait = MEGASAS_RESET_WAIT_TIME;
3480 cur_state = MFI_STATE_BB_INIT;
3481 break;
3482
3483 case MFI_STATE_FW_INIT:
3484 max_wait = MEGASAS_RESET_WAIT_TIME;
3485 cur_state = MFI_STATE_FW_INIT;
3486 break;
3487
3488 case MFI_STATE_FW_INIT_2:
3489 max_wait = MEGASAS_RESET_WAIT_TIME;
3490 cur_state = MFI_STATE_FW_INIT_2;
3491 break;
3492
3493 case MFI_STATE_DEVICE_SCAN:
3494 max_wait = MEGASAS_RESET_WAIT_TIME;
3495 cur_state = MFI_STATE_DEVICE_SCAN;
3496 break;
3497
3498 case MFI_STATE_FLUSH_CACHE:
3499 max_wait = MEGASAS_RESET_WAIT_TIME;
3500 cur_state = MFI_STATE_FLUSH_CACHE;
3501 break;
3502
3503 default:
3504 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3505 fw_state);
3506 return -ENODEV;
3507 }
3508
3509 /*
3510 * The cur_state should not last for more than max_wait secs
3511 */
3512 for (i = 0; i < (max_wait * 1000); i++) {
3513 curr_abs_state = instance->instancet->
3514 read_fw_status_reg(instance->reg_set);
3515
3516 if (abs_state == curr_abs_state) {
3517 msleep(1);
3518 } else
3519 break;
3520 }
3521
3522 /*
3523 * Return error if fw_state hasn't changed after max_wait
3524 */
3525 if (curr_abs_state == abs_state) {
3526 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3527 "in %d secs\n", fw_state, max_wait);
3528 return -ENODEV;
3529 }
3530
3531 abs_state = curr_abs_state;
3532 fw_state = curr_abs_state & MFI_STATE_MASK;
3533 }
3534 printk(KERN_INFO "megasas: FW now in Ready state\n");
3535
3536 return 0;
3537 }
3538
3539 /**
3540 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3541 * @instance: Adapter soft state
3542 */
3543 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3544 {
3545 int i;
3546 u32 max_cmd = instance->max_mfi_cmds;
3547 struct megasas_cmd *cmd;
3548
3549 if (!instance->frame_dma_pool)
3550 return;
3551
3552 /*
3553 * Return all frames to pool
3554 */
3555 for (i = 0; i < max_cmd; i++) {
3556
3557 cmd = instance->cmd_list[i];
3558
3559 if (cmd->frame)
3560 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3561 cmd->frame_phys_addr);
3562
3563 if (cmd->sense)
3564 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3565 cmd->sense_phys_addr);
3566 }
3567
3568 /*
3569 * Now destroy the pool itself
3570 */
3571 pci_pool_destroy(instance->frame_dma_pool);
3572 pci_pool_destroy(instance->sense_dma_pool);
3573
3574 instance->frame_dma_pool = NULL;
3575 instance->sense_dma_pool = NULL;
3576 }
3577
3578 /**
3579 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3580 * @instance: Adapter soft state
3581 *
3582 * Each command packet has an embedded DMA memory buffer that is used for
3583 * filling MFI frame and the SG list that immediately follows the frame. This
3584 * function creates those DMA memory buffers for each command packet by using
3585 * PCI pool facility.
3586 */
3587 static int megasas_create_frame_pool(struct megasas_instance *instance)
3588 {
3589 int i;
3590 u32 max_cmd;
3591 u32 sge_sz;
3592 u32 total_sz;
3593 u32 frame_count;
3594 struct megasas_cmd *cmd;
3595
3596 max_cmd = instance->max_mfi_cmds;
3597
3598 /*
3599 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3600 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3601 */
3602 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3603 sizeof(struct megasas_sge32);
3604
3605 if (instance->flag_ieee) {
3606 sge_sz = sizeof(struct megasas_sge_skinny);
3607 }
3608
3609 /*
3610 * For MFI controllers.
3611 * max_num_sge = 60
3612 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3613 * Total 960 byte (15 MFI frame of 64 byte)
3614 *
3615 * Fusion adapter require only 3 extra frame.
3616 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3617 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3618 * Total 192 byte (3 MFI frame of 64 byte)
3619 */
3620 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3621 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3622 /*
3623 * Use DMA pool facility provided by PCI layer
3624 */
3625 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3626 instance->pdev, total_sz, 256, 0);
3627
3628 if (!instance->frame_dma_pool) {
3629 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3630 return -ENOMEM;
3631 }
3632
3633 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3634 instance->pdev, 128, 4, 0);
3635
3636 if (!instance->sense_dma_pool) {
3637 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3638
3639 pci_pool_destroy(instance->frame_dma_pool);
3640 instance->frame_dma_pool = NULL;
3641
3642 return -ENOMEM;
3643 }
3644
3645 /*
3646 * Allocate and attach a frame to each of the commands in cmd_list.
3647 * By making cmd->index as the context instead of the &cmd, we can
3648 * always use 32bit context regardless of the architecture
3649 */
3650 for (i = 0; i < max_cmd; i++) {
3651
3652 cmd = instance->cmd_list[i];
3653
3654 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3655 GFP_KERNEL, &cmd->frame_phys_addr);
3656
3657 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3658 GFP_KERNEL, &cmd->sense_phys_addr);
3659
3660 /*
3661 * megasas_teardown_frame_pool() takes care of freeing
3662 * whatever has been allocated
3663 */
3664 if (!cmd->frame || !cmd->sense) {
3665 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3666 megasas_teardown_frame_pool(instance);
3667 return -ENOMEM;
3668 }
3669
3670 memset(cmd->frame, 0, total_sz);
3671 cmd->frame->io.context = cpu_to_le32(cmd->index);
3672 cmd->frame->io.pad_0 = 0;
3673 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3674 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
3675 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
3676 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
3677 (reset_devices))
3678 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3679 }
3680
3681 return 0;
3682 }
3683
3684 /**
3685 * megasas_free_cmds - Free all the cmds in the free cmd pool
3686 * @instance: Adapter soft state
3687 */
3688 void megasas_free_cmds(struct megasas_instance *instance)
3689 {
3690 int i;
3691 /* First free the MFI frame pool */
3692 megasas_teardown_frame_pool(instance);
3693
3694 /* Free all the commands in the cmd_list */
3695 for (i = 0; i < instance->max_mfi_cmds; i++)
3696
3697 kfree(instance->cmd_list[i]);
3698
3699 /* Free the cmd_list buffer itself */
3700 kfree(instance->cmd_list);
3701 instance->cmd_list = NULL;
3702
3703 INIT_LIST_HEAD(&instance->cmd_pool);
3704 }
3705
3706 /**
3707 * megasas_alloc_cmds - Allocates the command packets
3708 * @instance: Adapter soft state
3709 *
3710 * Each command that is issued to the FW, whether IO commands from the OS or
3711 * internal commands like IOCTLs, are wrapped in local data structure called
3712 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3713 * the FW.
3714 *
3715 * Each frame has a 32-bit field called context (tag). This context is used
3716 * to get back the megasas_cmd from the frame when a frame gets completed in
3717 * the ISR. Typically the address of the megasas_cmd itself would be used as
3718 * the context. But we wanted to keep the differences between 32 and 64 bit
3719 * systems to the mininum. We always use 32 bit integers for the context. In
3720 * this driver, the 32 bit values are the indices into an array cmd_list.
3721 * This array is used only to look up the megasas_cmd given the context. The
3722 * free commands themselves are maintained in a linked list called cmd_pool.
3723 */
3724 int megasas_alloc_cmds(struct megasas_instance *instance)
3725 {
3726 int i;
3727 int j;
3728 u32 max_cmd;
3729 struct megasas_cmd *cmd;
3730 struct fusion_context *fusion;
3731
3732 fusion = instance->ctrl_context;
3733 max_cmd = instance->max_mfi_cmds;
3734
3735 /*
3736 * instance->cmd_list is an array of struct megasas_cmd pointers.
3737 * Allocate the dynamic array first and then allocate individual
3738 * commands.
3739 */
3740 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3741
3742 if (!instance->cmd_list) {
3743 printk(KERN_DEBUG "megasas: out of memory\n");
3744 return -ENOMEM;
3745 }
3746
3747 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3748
3749 for (i = 0; i < max_cmd; i++) {
3750 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3751 GFP_KERNEL);
3752
3753 if (!instance->cmd_list[i]) {
3754
3755 for (j = 0; j < i; j++)
3756 kfree(instance->cmd_list[j]);
3757
3758 kfree(instance->cmd_list);
3759 instance->cmd_list = NULL;
3760
3761 return -ENOMEM;
3762 }
3763 }
3764
3765 for (i = 0; i < max_cmd; i++) {
3766 cmd = instance->cmd_list[i];
3767 memset(cmd, 0, sizeof(struct megasas_cmd));
3768 cmd->index = i;
3769 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
3770 cmd->scmd = NULL;
3771 cmd->instance = instance;
3772
3773 list_add_tail(&cmd->list, &instance->cmd_pool);
3774 }
3775
3776 /*
3777 * Create a frame pool and assign one frame to each cmd
3778 */
3779 if (megasas_create_frame_pool(instance)) {
3780 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3781 megasas_free_cmds(instance);
3782 }
3783
3784 return 0;
3785 }
3786
3787 /*
3788 * megasas_get_pd_list_info - Returns FW's pd_list structure
3789 * @instance: Adapter soft state
3790 * @pd_list: pd_list structure
3791 *
3792 * Issues an internal command (DCMD) to get the FW's controller PD
3793 * list structure. This information is mainly used to find out SYSTEM
3794 * supported by the FW.
3795 */
3796 static int
3797 megasas_get_pd_list(struct megasas_instance *instance)
3798 {
3799 int ret = 0, pd_index = 0;
3800 struct megasas_cmd *cmd;
3801 struct megasas_dcmd_frame *dcmd;
3802 struct MR_PD_LIST *ci;
3803 struct MR_PD_ADDRESS *pd_addr;
3804 dma_addr_t ci_h = 0;
3805
3806 cmd = megasas_get_cmd(instance);
3807
3808 if (!cmd) {
3809 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3810 return -ENOMEM;
3811 }
3812
3813 dcmd = &cmd->frame->dcmd;
3814
3815 ci = pci_alloc_consistent(instance->pdev,
3816 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3817
3818 if (!ci) {
3819 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3820 megasas_return_cmd(instance, cmd);
3821 return -ENOMEM;
3822 }
3823
3824 memset(ci, 0, sizeof(*ci));
3825 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3826
3827 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3828 dcmd->mbox.b[1] = 0;
3829 dcmd->cmd = MFI_CMD_DCMD;
3830 dcmd->cmd_status = 0xFF;
3831 dcmd->sge_count = 1;
3832 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3833 dcmd->timeout = 0;
3834 dcmd->pad_0 = 0;
3835 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3836 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3837 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3838 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3839
3840 if (instance->ctrl_context && !instance->mask_interrupts)
3841 ret = megasas_issue_blocked_cmd(instance, cmd,
3842 MEGASAS_BLOCKED_CMD_TIMEOUT);
3843 else
3844 ret = megasas_issue_polled(instance, cmd);
3845
3846 /*
3847 * the following function will get the instance PD LIST.
3848 */
3849
3850 pd_addr = ci->addr;
3851
3852 if ( ret == 0 &&
3853 (le32_to_cpu(ci->count) <
3854 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3855
3856 memset(instance->local_pd_list, 0,
3857 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3858
3859 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3860
3861 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3862 le16_to_cpu(pd_addr->deviceId);
3863 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3864 pd_addr->scsiDevType;
3865 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3866 MR_PD_STATE_SYSTEM;
3867 pd_addr++;
3868 }
3869 memcpy(instance->pd_list, instance->local_pd_list,
3870 sizeof(instance->pd_list));
3871 }
3872
3873 pci_free_consistent(instance->pdev,
3874 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3875 ci, ci_h);
3876
3877 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3878 megasas_return_mfi_mpt_pthr(instance, cmd,
3879 cmd->mpt_pthr_cmd_blocked);
3880 else
3881 megasas_return_cmd(instance, cmd);
3882
3883 return ret;
3884 }
3885
3886 /*
3887 * megasas_get_ld_list_info - Returns FW's ld_list structure
3888 * @instance: Adapter soft state
3889 * @ld_list: ld_list structure
3890 *
3891 * Issues an internal command (DCMD) to get the FW's controller PD
3892 * list structure. This information is mainly used to find out SYSTEM
3893 * supported by the FW.
3894 */
3895 static int
3896 megasas_get_ld_list(struct megasas_instance *instance)
3897 {
3898 int ret = 0, ld_index = 0, ids = 0;
3899 struct megasas_cmd *cmd;
3900 struct megasas_dcmd_frame *dcmd;
3901 struct MR_LD_LIST *ci;
3902 dma_addr_t ci_h = 0;
3903 u32 ld_count;
3904
3905 cmd = megasas_get_cmd(instance);
3906
3907 if (!cmd) {
3908 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3909 return -ENOMEM;
3910 }
3911
3912 dcmd = &cmd->frame->dcmd;
3913
3914 ci = pci_alloc_consistent(instance->pdev,
3915 sizeof(struct MR_LD_LIST),
3916 &ci_h);
3917
3918 if (!ci) {
3919 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3920 megasas_return_cmd(instance, cmd);
3921 return -ENOMEM;
3922 }
3923
3924 memset(ci, 0, sizeof(*ci));
3925 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3926
3927 if (instance->supportmax256vd)
3928 dcmd->mbox.b[0] = 1;
3929 dcmd->cmd = MFI_CMD_DCMD;
3930 dcmd->cmd_status = 0xFF;
3931 dcmd->sge_count = 1;
3932 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3933 dcmd->timeout = 0;
3934 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3935 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3936 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3937 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
3938 dcmd->pad_0 = 0;
3939
3940 if (instance->ctrl_context && !instance->mask_interrupts)
3941 ret = megasas_issue_blocked_cmd(instance, cmd,
3942 MEGASAS_BLOCKED_CMD_TIMEOUT);
3943 else
3944 ret = megasas_issue_polled(instance, cmd);
3945
3946
3947 ld_count = le32_to_cpu(ci->ldCount);
3948
3949 /* the following function will get the instance PD LIST */
3950
3951 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3952 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
3953
3954 for (ld_index = 0; ld_index < ld_count; ld_index++) {
3955 if (ci->ldList[ld_index].state != 0) {
3956 ids = ci->ldList[ld_index].ref.targetId;
3957 instance->ld_ids[ids] =
3958 ci->ldList[ld_index].ref.targetId;
3959 }
3960 }
3961 }
3962
3963 pci_free_consistent(instance->pdev,
3964 sizeof(struct MR_LD_LIST),
3965 ci,
3966 ci_h);
3967
3968 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3969 megasas_return_mfi_mpt_pthr(instance, cmd,
3970 cmd->mpt_pthr_cmd_blocked);
3971 else
3972 megasas_return_cmd(instance, cmd);
3973 return ret;
3974 }
3975
3976 /**
3977 * megasas_ld_list_query - Returns FW's ld_list structure
3978 * @instance: Adapter soft state
3979 * @ld_list: ld_list structure
3980 *
3981 * Issues an internal command (DCMD) to get the FW's controller PD
3982 * list structure. This information is mainly used to find out SYSTEM
3983 * supported by the FW.
3984 */
3985 static int
3986 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3987 {
3988 int ret = 0, ld_index = 0, ids = 0;
3989 struct megasas_cmd *cmd;
3990 struct megasas_dcmd_frame *dcmd;
3991 struct MR_LD_TARGETID_LIST *ci;
3992 dma_addr_t ci_h = 0;
3993 u32 tgtid_count;
3994
3995 cmd = megasas_get_cmd(instance);
3996
3997 if (!cmd) {
3998 printk(KERN_WARNING
3999 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
4000 return -ENOMEM;
4001 }
4002
4003 dcmd = &cmd->frame->dcmd;
4004
4005 ci = pci_alloc_consistent(instance->pdev,
4006 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4007
4008 if (!ci) {
4009 printk(KERN_WARNING
4010 "megasas: Failed to alloc mem for ld_list_query\n");
4011 megasas_return_cmd(instance, cmd);
4012 return -ENOMEM;
4013 }
4014
4015 memset(ci, 0, sizeof(*ci));
4016 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4017
4018 dcmd->mbox.b[0] = query_type;
4019 if (instance->supportmax256vd)
4020 dcmd->mbox.b[2] = 1;
4021
4022 dcmd->cmd = MFI_CMD_DCMD;
4023 dcmd->cmd_status = 0xFF;
4024 dcmd->sge_count = 1;
4025 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4026 dcmd->timeout = 0;
4027 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4028 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4029 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4030 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4031 dcmd->pad_0 = 0;
4032
4033 if (instance->ctrl_context && !instance->mask_interrupts)
4034 ret = megasas_issue_blocked_cmd(instance, cmd,
4035 MEGASAS_BLOCKED_CMD_TIMEOUT);
4036 else
4037 ret = megasas_issue_polled(instance, cmd);
4038
4039 tgtid_count = le32_to_cpu(ci->count);
4040
4041 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
4042 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4043 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4044 ids = ci->targetId[ld_index];
4045 instance->ld_ids[ids] = ci->targetId[ld_index];
4046 }
4047
4048 }
4049
4050 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4051 ci, ci_h);
4052
4053 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4054 megasas_return_mfi_mpt_pthr(instance, cmd,
4055 cmd->mpt_pthr_cmd_blocked);
4056 else
4057 megasas_return_cmd(instance, cmd);
4058
4059 return ret;
4060 }
4061
4062 /*
4063 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4064 * instance : Controller's instance
4065 */
4066 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4067 {
4068 struct fusion_context *fusion;
4069 u32 old_map_sz;
4070 u32 new_map_sz;
4071
4072 fusion = instance->ctrl_context;
4073 /* For MFI based controllers return dummy success */
4074 if (!fusion)
4075 return;
4076
4077 instance->supportmax256vd =
4078 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4079 /* Below is additional check to address future FW enhancement */
4080 if (instance->ctrl_info->max_lds > 64)
4081 instance->supportmax256vd = 1;
4082
4083 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4084 * MEGASAS_MAX_DEV_PER_CHANNEL;
4085 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4086 * MEGASAS_MAX_DEV_PER_CHANNEL;
4087 if (instance->supportmax256vd) {
4088 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4089 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4090 } else {
4091 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4092 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4093 }
4094 dev_info(&instance->pdev->dev, "Firmware supports %d VD %d PD\n",
4095 instance->fw_supported_vd_count,
4096 instance->fw_supported_pd_count);
4097 dev_info(&instance->pdev->dev, "Driver supports %d VD %d PD\n",
4098 instance->drv_supported_vd_count,
4099 instance->drv_supported_pd_count);
4100
4101 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4102 (sizeof(struct MR_LD_SPAN_MAP) *
4103 (instance->fw_supported_vd_count - 1));
4104 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4105 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4106 (sizeof(struct MR_LD_SPAN_MAP) *
4107 (instance->drv_supported_vd_count - 1));
4108
4109 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4110
4111
4112 if (instance->supportmax256vd)
4113 fusion->current_map_sz = new_map_sz;
4114 else
4115 fusion->current_map_sz = old_map_sz;
4116
4117 }
4118
4119 /**
4120 * megasas_get_controller_info - Returns FW's controller structure
4121 * @instance: Adapter soft state
4122 *
4123 * Issues an internal command (DCMD) to get the FW's controller structure.
4124 * This information is mainly used to find out the maximum IO transfer per
4125 * command supported by the FW.
4126 */
4127 int
4128 megasas_get_ctrl_info(struct megasas_instance *instance)
4129 {
4130 int ret = 0;
4131 struct megasas_cmd *cmd;
4132 struct megasas_dcmd_frame *dcmd;
4133 struct megasas_ctrl_info *ci;
4134 struct megasas_ctrl_info *ctrl_info;
4135 dma_addr_t ci_h = 0;
4136
4137 ctrl_info = instance->ctrl_info;
4138
4139 cmd = megasas_get_cmd(instance);
4140
4141 if (!cmd) {
4142 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4143 return -ENOMEM;
4144 }
4145
4146 dcmd = &cmd->frame->dcmd;
4147
4148 ci = pci_alloc_consistent(instance->pdev,
4149 sizeof(struct megasas_ctrl_info), &ci_h);
4150
4151 if (!ci) {
4152 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4153 megasas_return_cmd(instance, cmd);
4154 return -ENOMEM;
4155 }
4156
4157 memset(ci, 0, sizeof(*ci));
4158 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4159
4160 dcmd->cmd = MFI_CMD_DCMD;
4161 dcmd->cmd_status = 0xFF;
4162 dcmd->sge_count = 1;
4163 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4164 dcmd->timeout = 0;
4165 dcmd->pad_0 = 0;
4166 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4167 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4168 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4169 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4170 dcmd->mbox.b[0] = 1;
4171
4172 if (instance->ctrl_context && !instance->mask_interrupts)
4173 ret = megasas_issue_blocked_cmd(instance, cmd,
4174 MEGASAS_BLOCKED_CMD_TIMEOUT);
4175 else
4176 ret = megasas_issue_polled(instance, cmd);
4177
4178 if (!ret) {
4179 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4180 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4181 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4182 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4183 megasas_update_ext_vd_details(instance);
4184 }
4185
4186 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4187 ci, ci_h);
4188
4189 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4190 megasas_return_mfi_mpt_pthr(instance, cmd,
4191 cmd->mpt_pthr_cmd_blocked);
4192 else
4193 megasas_return_cmd(instance, cmd);
4194 return ret;
4195 }
4196
4197 /*
4198 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4199 * to firmware
4200 *
4201 * @instance: Adapter soft state
4202 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4203 MR_CRASH_BUF_TURN_OFF = 0
4204 MR_CRASH_BUF_TURN_ON = 1
4205 * @return 0 on success non-zero on failure.
4206 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4207 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4208 * that driver supports crash dump feature. This DCMD will be sent only if
4209 * crash dump feature is supported by the FW.
4210 *
4211 */
4212 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4213 u8 crash_buf_state)
4214 {
4215 int ret = 0;
4216 struct megasas_cmd *cmd;
4217 struct megasas_dcmd_frame *dcmd;
4218
4219 cmd = megasas_get_cmd(instance);
4220
4221 if (!cmd) {
4222 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4223 return -ENOMEM;
4224 }
4225
4226
4227 dcmd = &cmd->frame->dcmd;
4228
4229 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4230 dcmd->mbox.b[0] = crash_buf_state;
4231 dcmd->cmd = MFI_CMD_DCMD;
4232 dcmd->cmd_status = 0xFF;
4233 dcmd->sge_count = 1;
4234 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4235 dcmd->timeout = 0;
4236 dcmd->pad_0 = 0;
4237 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4238 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4239 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4240 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4241
4242 if (instance->ctrl_context && !instance->mask_interrupts)
4243 ret = megasas_issue_blocked_cmd(instance, cmd,
4244 MEGASAS_BLOCKED_CMD_TIMEOUT);
4245 else
4246 ret = megasas_issue_polled(instance, cmd);
4247
4248 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4249 megasas_return_mfi_mpt_pthr(instance, cmd,
4250 cmd->mpt_pthr_cmd_blocked);
4251 else
4252 megasas_return_cmd(instance, cmd);
4253 return ret;
4254 }
4255
4256 /**
4257 * megasas_issue_init_mfi - Initializes the FW
4258 * @instance: Adapter soft state
4259 *
4260 * Issues the INIT MFI cmd
4261 */
4262 static int
4263 megasas_issue_init_mfi(struct megasas_instance *instance)
4264 {
4265 u32 context;
4266
4267 struct megasas_cmd *cmd;
4268
4269 struct megasas_init_frame *init_frame;
4270 struct megasas_init_queue_info *initq_info;
4271 dma_addr_t init_frame_h;
4272 dma_addr_t initq_info_h;
4273
4274 /*
4275 * Prepare a init frame. Note the init frame points to queue info
4276 * structure. Each frame has SGL allocated after first 64 bytes. For
4277 * this frame - since we don't need any SGL - we use SGL's space as
4278 * queue info structure
4279 *
4280 * We will not get a NULL command below. We just created the pool.
4281 */
4282 cmd = megasas_get_cmd(instance);
4283
4284 init_frame = (struct megasas_init_frame *)cmd->frame;
4285 initq_info = (struct megasas_init_queue_info *)
4286 ((unsigned long)init_frame + 64);
4287
4288 init_frame_h = cmd->frame_phys_addr;
4289 initq_info_h = init_frame_h + 64;
4290
4291 context = init_frame->context;
4292 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4293 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4294 init_frame->context = context;
4295
4296 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4297 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4298
4299 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4300 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4301
4302 init_frame->cmd = MFI_CMD_INIT;
4303 init_frame->cmd_status = 0xFF;
4304 init_frame->queue_info_new_phys_addr_lo =
4305 cpu_to_le32(lower_32_bits(initq_info_h));
4306 init_frame->queue_info_new_phys_addr_hi =
4307 cpu_to_le32(upper_32_bits(initq_info_h));
4308
4309 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4310
4311 /*
4312 * disable the intr before firing the init frame to FW
4313 */
4314 instance->instancet->disable_intr(instance);
4315
4316 /*
4317 * Issue the init frame in polled mode
4318 */
4319
4320 if (megasas_issue_polled(instance, cmd)) {
4321 printk(KERN_ERR "megasas: Failed to init firmware\n");
4322 megasas_return_cmd(instance, cmd);
4323 goto fail_fw_init;
4324 }
4325
4326 megasas_return_cmd(instance, cmd);
4327
4328 return 0;
4329
4330 fail_fw_init:
4331 return -EINVAL;
4332 }
4333
4334 static u32
4335 megasas_init_adapter_mfi(struct megasas_instance *instance)
4336 {
4337 struct megasas_register_set __iomem *reg_set;
4338 u32 context_sz;
4339 u32 reply_q_sz;
4340
4341 reg_set = instance->reg_set;
4342
4343 /*
4344 * Get various operational parameters from status register
4345 */
4346 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4347 /*
4348 * Reduce the max supported cmds by 1. This is to ensure that the
4349 * reply_q_sz (1 more than the max cmd that driver may send)
4350 * does not exceed max cmds that the FW can support
4351 */
4352 instance->max_fw_cmds = instance->max_fw_cmds-1;
4353 instance->max_mfi_cmds = instance->max_fw_cmds;
4354 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4355 0x10;
4356 /*
4357 * Create a pool of commands
4358 */
4359 if (megasas_alloc_cmds(instance))
4360 goto fail_alloc_cmds;
4361
4362 /*
4363 * Allocate memory for reply queue. Length of reply queue should
4364 * be _one_ more than the maximum commands handled by the firmware.
4365 *
4366 * Note: When FW completes commands, it places corresponding contex
4367 * values in this circular reply queue. This circular queue is a fairly
4368 * typical producer-consumer queue. FW is the producer (of completed
4369 * commands) and the driver is the consumer.
4370 */
4371 context_sz = sizeof(u32);
4372 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4373
4374 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4375 reply_q_sz,
4376 &instance->reply_queue_h);
4377
4378 if (!instance->reply_queue) {
4379 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4380 goto fail_reply_queue;
4381 }
4382
4383 if (megasas_issue_init_mfi(instance))
4384 goto fail_fw_init;
4385
4386 if (megasas_get_ctrl_info(instance)) {
4387 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4388 "Fail from %s %d\n", instance->unique_id,
4389 __func__, __LINE__);
4390 goto fail_fw_init;
4391 }
4392
4393 instance->fw_support_ieee = 0;
4394 instance->fw_support_ieee =
4395 (instance->instancet->read_fw_status_reg(reg_set) &
4396 0x04000000);
4397
4398 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4399 instance->fw_support_ieee);
4400
4401 if (instance->fw_support_ieee)
4402 instance->flag_ieee = 1;
4403
4404 return 0;
4405
4406 fail_fw_init:
4407
4408 pci_free_consistent(instance->pdev, reply_q_sz,
4409 instance->reply_queue, instance->reply_queue_h);
4410 fail_reply_queue:
4411 megasas_free_cmds(instance);
4412
4413 fail_alloc_cmds:
4414 return 1;
4415 }
4416
4417 /**
4418 * megasas_init_fw - Initializes the FW
4419 * @instance: Adapter soft state
4420 *
4421 * This is the main function for initializing firmware
4422 */
4423
4424 static int megasas_init_fw(struct megasas_instance *instance)
4425 {
4426 u32 max_sectors_1;
4427 u32 max_sectors_2;
4428 u32 tmp_sectors, msix_enable, scratch_pad_2;
4429 resource_size_t base_addr;
4430 struct megasas_register_set __iomem *reg_set;
4431 struct megasas_ctrl_info *ctrl_info = NULL;
4432 unsigned long bar_list;
4433 int i, loop, fw_msix_count = 0;
4434 struct IOV_111 *iovPtr;
4435
4436 /* Find first memory bar */
4437 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4438 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
4439 if (pci_request_selected_regions(instance->pdev, instance->bar,
4440 "megasas: LSI")) {
4441 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4442 return -EBUSY;
4443 }
4444
4445 base_addr = pci_resource_start(instance->pdev, instance->bar);
4446 instance->reg_set = ioremap_nocache(base_addr, 8192);
4447
4448 if (!instance->reg_set) {
4449 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4450 goto fail_ioremap;
4451 }
4452
4453 reg_set = instance->reg_set;
4454
4455 switch (instance->pdev->device) {
4456 case PCI_DEVICE_ID_LSI_FUSION:
4457 case PCI_DEVICE_ID_LSI_PLASMA:
4458 case PCI_DEVICE_ID_LSI_INVADER:
4459 case PCI_DEVICE_ID_LSI_FURY:
4460 instance->instancet = &megasas_instance_template_fusion;
4461 break;
4462 case PCI_DEVICE_ID_LSI_SAS1078R:
4463 case PCI_DEVICE_ID_LSI_SAS1078DE:
4464 instance->instancet = &megasas_instance_template_ppc;
4465 break;
4466 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4467 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4468 instance->instancet = &megasas_instance_template_gen2;
4469 break;
4470 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4471 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4472 instance->instancet = &megasas_instance_template_skinny;
4473 break;
4474 case PCI_DEVICE_ID_LSI_SAS1064R:
4475 case PCI_DEVICE_ID_DELL_PERC5:
4476 default:
4477 instance->instancet = &megasas_instance_template_xscale;
4478 break;
4479 }
4480
4481 if (megasas_transition_to_ready(instance, 0)) {
4482 atomic_set(&instance->fw_reset_no_pci_access, 1);
4483 instance->instancet->adp_reset
4484 (instance, instance->reg_set);
4485 atomic_set(&instance->fw_reset_no_pci_access, 0);
4486 dev_info(&instance->pdev->dev,
4487 "megasas: FW restarted successfully from %s!\n",
4488 __func__);
4489
4490 /*waitting for about 30 second before retry*/
4491 ssleep(30);
4492
4493 if (megasas_transition_to_ready(instance, 0))
4494 goto fail_ready_state;
4495 }
4496
4497 /*
4498 * MSI-X host index 0 is common for all adapter.
4499 * It is used for all MPT based Adapters.
4500 */
4501 instance->reply_post_host_index_addr[0] =
4502 (u32 *)((u8 *)instance->reg_set +
4503 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4504
4505 /* Check if MSI-X is supported while in ready state */
4506 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4507 0x4000000) >> 0x1a;
4508 if (msix_enable && !msix_disable) {
4509 scratch_pad_2 = readl
4510 (&instance->reg_set->outbound_scratch_pad_2);
4511 /* Check max MSI-X vectors */
4512 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4513 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
4514 instance->msix_vectors = (scratch_pad_2
4515 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4516 fw_msix_count = instance->msix_vectors;
4517 if (msix_vectors)
4518 instance->msix_vectors =
4519 min(msix_vectors,
4520 instance->msix_vectors);
4521 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4522 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4523 /* Invader/Fury supports more than 8 MSI-X */
4524 instance->msix_vectors = ((scratch_pad_2
4525 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4526 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4527 fw_msix_count = instance->msix_vectors;
4528 /* Save 1-15 reply post index address to local memory
4529 * Index 0 is already saved from reg offset
4530 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4531 */
4532 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4533 instance->reply_post_host_index_addr[loop] =
4534 (u32 *)((u8 *)instance->reg_set +
4535 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4536 + (loop * 0x10));
4537 }
4538 if (msix_vectors)
4539 instance->msix_vectors = min(msix_vectors,
4540 instance->msix_vectors);
4541 } else
4542 instance->msix_vectors = 1;
4543 /* Don't bother allocating more MSI-X vectors than cpus */
4544 instance->msix_vectors = min(instance->msix_vectors,
4545 (unsigned int)num_online_cpus());
4546 for (i = 0; i < instance->msix_vectors; i++)
4547 instance->msixentry[i].entry = i;
4548 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4549 1, instance->msix_vectors);
4550 if (i > 0)
4551 instance->msix_vectors = i;
4552 else
4553 instance->msix_vectors = 0;
4554
4555 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
4556 "<%d> MSIX vector,Online CPUs: <%d>,"
4557 "Current MSIX <%d>\n", instance->host->host_no,
4558 fw_msix_count, (unsigned int)num_online_cpus(),
4559 instance->msix_vectors);
4560 }
4561
4562 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4563 GFP_KERNEL);
4564 if (instance->ctrl_info == NULL)
4565 goto fail_init_adapter;
4566
4567 /*
4568 * Below are default value for legacy Firmware.
4569 * non-fusion based controllers
4570 */
4571 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4572 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4573 /* Get operational params, sge flags, send init cmd to controller */
4574 if (instance->instancet->init_adapter(instance))
4575 goto fail_init_adapter;
4576
4577 printk(KERN_ERR "megasas: INIT adapter done\n");
4578
4579 /** for passthrough
4580 * the following function will get the PD LIST.
4581 */
4582
4583 memset(instance->pd_list, 0 ,
4584 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
4585 if (megasas_get_pd_list(instance) < 0) {
4586 printk(KERN_ERR "megasas: failed to get PD list\n");
4587 goto fail_init_adapter;
4588 }
4589
4590 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4591 if (megasas_ld_list_query(instance,
4592 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4593 megasas_get_ld_list(instance);
4594
4595 /*
4596 * Compute the max allowed sectors per IO: The controller info has two
4597 * limits on max sectors. Driver should use the minimum of these two.
4598 *
4599 * 1 << stripe_sz_ops.min = max sectors per strip
4600 *
4601 * Note that older firmwares ( < FW ver 30) didn't report information
4602 * to calculate max_sectors_1. So the number ended up as zero always.
4603 */
4604 tmp_sectors = 0;
4605 ctrl_info = instance->ctrl_info;
4606
4607 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4608 le16_to_cpu(ctrl_info->max_strips_per_io);
4609 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
4610
4611 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
4612
4613 /*Check whether controller is iMR or MR */
4614 if (ctrl_info->memory_size) {
4615 instance->is_imr = 0;
4616 dev_info(&instance->pdev->dev, "Controller type: MR,"
4617 "Memory size is: %dMB\n",
4618 le16_to_cpu(ctrl_info->memory_size));
4619 } else {
4620 instance->is_imr = 1;
4621 dev_info(&instance->pdev->dev,
4622 "Controller type: iMR\n");
4623 }
4624 instance->disableOnlineCtrlReset =
4625 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4626 instance->mpio = ctrl_info->adapterOperations2.mpio;
4627 instance->UnevenSpanSupport =
4628 ctrl_info->adapterOperations2.supportUnevenSpans;
4629 if (instance->UnevenSpanSupport) {
4630 struct fusion_context *fusion = instance->ctrl_context;
4631
4632 dev_info(&instance->pdev->dev, "FW supports: "
4633 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4634 if (MR_ValidateMapInfo(instance))
4635 fusion->fast_path_io = 1;
4636 else
4637 fusion->fast_path_io = 0;
4638
4639 }
4640 if (ctrl_info->host_interface.SRIOV) {
4641 if (!ctrl_info->adapterOperations2.activePassive)
4642 instance->PlasmaFW111 = 1;
4643
4644 if (!instance->PlasmaFW111)
4645 instance->requestorId =
4646 ctrl_info->iov.requestorId;
4647 else {
4648 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4649 instance->requestorId = iovPtr->requestorId;
4650 }
4651 dev_warn(&instance->pdev->dev, "I am VF "
4652 "requestorId %d\n", instance->requestorId);
4653 }
4654
4655 instance->crash_dump_fw_support =
4656 ctrl_info->adapterOperations3.supportCrashDump;
4657 instance->crash_dump_drv_support =
4658 (instance->crash_dump_fw_support &&
4659 instance->crash_dump_buf);
4660 if (instance->crash_dump_drv_support) {
4661 dev_info(&instance->pdev->dev, "Firmware Crash dump "
4662 "feature is supported\n");
4663 megasas_set_crash_dump_params(instance,
4664 MR_CRASH_BUF_TURN_OFF);
4665
4666 } else {
4667 if (instance->crash_dump_buf)
4668 pci_free_consistent(instance->pdev,
4669 CRASH_DMA_BUF_SIZE,
4670 instance->crash_dump_buf,
4671 instance->crash_dump_h);
4672 instance->crash_dump_buf = NULL;
4673 }
4674
4675 instance->secure_jbod_support =
4676 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4677 if (instance->secure_jbod_support)
4678 dev_info(&instance->pdev->dev, "Firmware supports Secure JBOD\n");
4679 instance->max_sectors_per_req = instance->max_num_sge *
4680 PAGE_SIZE / 512;
4681 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4682 instance->max_sectors_per_req = tmp_sectors;
4683
4684 /*
4685 * 1. For fusion adapters, 3 commands for IOCTL and 5 commands
4686 * for driver's internal DCMDs.
4687 * 2. For MFI skinny adapters, 5 commands for IOCTL + driver's
4688 * internal DCMDs.
4689 * 3. For rest of MFI adapters, 27 commands reserved for IOCTLs
4690 * and 5 commands for drivers's internal DCMD.
4691 */
4692 if (instance->ctrl_context) {
4693 instance->max_scsi_cmds = instance->max_fw_cmds -
4694 (MEGASAS_FUSION_INTERNAL_CMDS +
4695 MEGASAS_FUSION_IOCTL_CMDS);
4696 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
4697 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4698 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4699 instance->max_scsi_cmds = instance->max_fw_cmds -
4700 MEGASAS_SKINNY_INT_CMDS;
4701 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4702 } else {
4703 instance->max_scsi_cmds = instance->max_fw_cmds -
4704 MEGASAS_INT_CMDS;
4705 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5));
4706 }
4707
4708 /* Check for valid throttlequeuedepth module parameter */
4709 if (throttlequeuedepth &&
4710 throttlequeuedepth <= instance->max_scsi_cmds)
4711 instance->throttlequeuedepth = throttlequeuedepth;
4712 else
4713 instance->throttlequeuedepth =
4714 MEGASAS_THROTTLE_QUEUE_DEPTH;
4715
4716 /*
4717 * Setup tasklet for cmd completion
4718 */
4719
4720 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4721 (unsigned long)instance);
4722
4723 /* Launch SR-IOV heartbeat timer */
4724 if (instance->requestorId) {
4725 if (!megasas_sriov_start_heartbeat(instance, 1))
4726 megasas_start_timer(instance,
4727 &instance->sriov_heartbeat_timer,
4728 megasas_sriov_heartbeat_handler,
4729 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4730 else
4731 instance->skip_heartbeat_timer_del = 1;
4732 }
4733
4734 return 0;
4735
4736 fail_init_adapter:
4737 fail_ready_state:
4738 kfree(instance->ctrl_info);
4739 instance->ctrl_info = NULL;
4740 iounmap(instance->reg_set);
4741
4742 fail_ioremap:
4743 pci_release_selected_regions(instance->pdev, instance->bar);
4744
4745 return -EINVAL;
4746 }
4747
4748 /**
4749 * megasas_release_mfi - Reverses the FW initialization
4750 * @intance: Adapter soft state
4751 */
4752 static void megasas_release_mfi(struct megasas_instance *instance)
4753 {
4754 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
4755
4756 if (instance->reply_queue)
4757 pci_free_consistent(instance->pdev, reply_q_sz,
4758 instance->reply_queue, instance->reply_queue_h);
4759
4760 megasas_free_cmds(instance);
4761
4762 iounmap(instance->reg_set);
4763
4764 pci_release_selected_regions(instance->pdev, instance->bar);
4765 }
4766
4767 /**
4768 * megasas_get_seq_num - Gets latest event sequence numbers
4769 * @instance: Adapter soft state
4770 * @eli: FW event log sequence numbers information
4771 *
4772 * FW maintains a log of all events in a non-volatile area. Upper layers would
4773 * usually find out the latest sequence number of the events, the seq number at
4774 * the boot etc. They would "read" all the events below the latest seq number
4775 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4776 * number), they would subsribe to AEN (asynchronous event notification) and
4777 * wait for the events to happen.
4778 */
4779 static int
4780 megasas_get_seq_num(struct megasas_instance *instance,
4781 struct megasas_evt_log_info *eli)
4782 {
4783 struct megasas_cmd *cmd;
4784 struct megasas_dcmd_frame *dcmd;
4785 struct megasas_evt_log_info *el_info;
4786 dma_addr_t el_info_h = 0;
4787
4788 cmd = megasas_get_cmd(instance);
4789
4790 if (!cmd) {
4791 return -ENOMEM;
4792 }
4793
4794 dcmd = &cmd->frame->dcmd;
4795 el_info = pci_alloc_consistent(instance->pdev,
4796 sizeof(struct megasas_evt_log_info),
4797 &el_info_h);
4798
4799 if (!el_info) {
4800 megasas_return_cmd(instance, cmd);
4801 return -ENOMEM;
4802 }
4803
4804 memset(el_info, 0, sizeof(*el_info));
4805 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4806
4807 dcmd->cmd = MFI_CMD_DCMD;
4808 dcmd->cmd_status = 0x0;
4809 dcmd->sge_count = 1;
4810 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4811 dcmd->timeout = 0;
4812 dcmd->pad_0 = 0;
4813 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4814 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4815 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4816 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4817
4818 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4819 dev_err(&instance->pdev->dev, "Command timedout"
4820 "from %s\n", __func__);
4821 else {
4822 /*
4823 * Copy the data back into callers buffer
4824 */
4825 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4826 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4827 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4828 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4829 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4830 }
4831
4832 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4833 el_info, el_info_h);
4834
4835 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4836 megasas_return_mfi_mpt_pthr(instance, cmd,
4837 cmd->mpt_pthr_cmd_blocked);
4838 else
4839 megasas_return_cmd(instance, cmd);
4840
4841 return 0;
4842 }
4843
4844 /**
4845 * megasas_register_aen - Registers for asynchronous event notification
4846 * @instance: Adapter soft state
4847 * @seq_num: The starting sequence number
4848 * @class_locale: Class of the event
4849 *
4850 * This function subscribes for AEN for events beyond the @seq_num. It requests
4851 * to be notified if and only if the event is of type @class_locale
4852 */
4853 static int
4854 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4855 u32 class_locale_word)
4856 {
4857 int ret_val;
4858 struct megasas_cmd *cmd;
4859 struct megasas_dcmd_frame *dcmd;
4860 union megasas_evt_class_locale curr_aen;
4861 union megasas_evt_class_locale prev_aen;
4862
4863 /*
4864 * If there an AEN pending already (aen_cmd), check if the
4865 * class_locale of that pending AEN is inclusive of the new
4866 * AEN request we currently have. If it is, then we don't have
4867 * to do anything. In other words, whichever events the current
4868 * AEN request is subscribing to, have already been subscribed
4869 * to.
4870 *
4871 * If the old_cmd is _not_ inclusive, then we have to abort
4872 * that command, form a class_locale that is superset of both
4873 * old and current and re-issue to the FW
4874 */
4875
4876 curr_aen.word = class_locale_word;
4877
4878 if (instance->aen_cmd) {
4879
4880 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
4881 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
4882
4883 /*
4884 * A class whose enum value is smaller is inclusive of all
4885 * higher values. If a PROGRESS (= -1) was previously
4886 * registered, then a new registration requests for higher
4887 * classes need not be sent to FW. They are automatically
4888 * included.
4889 *
4890 * Locale numbers don't have such hierarchy. They are bitmap
4891 * values
4892 */
4893 if ((prev_aen.members.class <= curr_aen.members.class) &&
4894 !((prev_aen.members.locale & curr_aen.members.locale) ^
4895 curr_aen.members.locale)) {
4896 /*
4897 * Previously issued event registration includes
4898 * current request. Nothing to do.
4899 */
4900 return 0;
4901 } else {
4902 curr_aen.members.locale |= prev_aen.members.locale;
4903
4904 if (prev_aen.members.class < curr_aen.members.class)
4905 curr_aen.members.class = prev_aen.members.class;
4906
4907 instance->aen_cmd->abort_aen = 1;
4908 ret_val = megasas_issue_blocked_abort_cmd(instance,
4909 instance->
4910 aen_cmd, 30);
4911
4912 if (ret_val) {
4913 printk(KERN_DEBUG "megasas: Failed to abort "
4914 "previous AEN command\n");
4915 return ret_val;
4916 }
4917 }
4918 }
4919
4920 cmd = megasas_get_cmd(instance);
4921
4922 if (!cmd)
4923 return -ENOMEM;
4924
4925 dcmd = &cmd->frame->dcmd;
4926
4927 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4928
4929 /*
4930 * Prepare DCMD for aen registration
4931 */
4932 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4933
4934 dcmd->cmd = MFI_CMD_DCMD;
4935 dcmd->cmd_status = 0x0;
4936 dcmd->sge_count = 1;
4937 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4938 dcmd->timeout = 0;
4939 dcmd->pad_0 = 0;
4940 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4941 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4942 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
4943 instance->last_seq_num = seq_num;
4944 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4945 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4946 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
4947
4948 if (instance->aen_cmd != NULL) {
4949 megasas_return_cmd(instance, cmd);
4950 return 0;
4951 }
4952
4953 /*
4954 * Store reference to the cmd used to register for AEN. When an
4955 * application wants us to register for AEN, we have to abort this
4956 * cmd and re-register with a new EVENT LOCALE supplied by that app
4957 */
4958 instance->aen_cmd = cmd;
4959
4960 /*
4961 * Issue the aen registration frame
4962 */
4963 instance->instancet->issue_dcmd(instance, cmd);
4964
4965 return 0;
4966 }
4967
4968 /**
4969 * megasas_start_aen - Subscribes to AEN during driver load time
4970 * @instance: Adapter soft state
4971 */
4972 static int megasas_start_aen(struct megasas_instance *instance)
4973 {
4974 struct megasas_evt_log_info eli;
4975 union megasas_evt_class_locale class_locale;
4976
4977 /*
4978 * Get the latest sequence number from FW
4979 */
4980 memset(&eli, 0, sizeof(eli));
4981
4982 if (megasas_get_seq_num(instance, &eli))
4983 return -1;
4984
4985 /*
4986 * Register AEN with FW for latest sequence number plus 1
4987 */
4988 class_locale.members.reserved = 0;
4989 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4990 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4991
4992 return megasas_register_aen(instance,
4993 eli.newest_seq_num + 1,
4994 class_locale.word);
4995 }
4996
4997 /**
4998 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4999 * @instance: Adapter soft state
5000 */
5001 static int megasas_io_attach(struct megasas_instance *instance)
5002 {
5003 struct Scsi_Host *host = instance->host;
5004
5005 /*
5006 * Export parameters required by SCSI mid-layer
5007 */
5008 host->irq = instance->pdev->irq;
5009 host->unique_id = instance->unique_id;
5010 host->can_queue = instance->max_scsi_cmds;
5011 host->this_id = instance->init_id;
5012 host->sg_tablesize = instance->max_num_sge;
5013
5014 if (instance->fw_support_ieee)
5015 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5016
5017 /*
5018 * Check if the module parameter value for max_sectors can be used
5019 */
5020 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5021 instance->max_sectors_per_req = max_sectors;
5022 else {
5023 if (max_sectors) {
5024 if (((instance->pdev->device ==
5025 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5026 (instance->pdev->device ==
5027 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5028 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5029 instance->max_sectors_per_req = max_sectors;
5030 } else {
5031 printk(KERN_INFO "megasas: max_sectors should be > 0"
5032 "and <= %d (or < 1MB for GEN2 controller)\n",
5033 instance->max_sectors_per_req);
5034 }
5035 }
5036 }
5037
5038 host->max_sectors = instance->max_sectors_per_req;
5039 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5040 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5041 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5042 host->max_lun = MEGASAS_MAX_LUN;
5043 host->max_cmd_len = 16;
5044
5045 /* Fusion only supports host reset */
5046 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5047 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5048 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5049 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5050 host->hostt->eh_device_reset_handler = NULL;
5051 host->hostt->eh_bus_reset_handler = NULL;
5052 }
5053
5054 /*
5055 * Notify the mid-layer about the new controller
5056 */
5057 if (scsi_add_host(host, &instance->pdev->dev)) {
5058 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
5059 return -ENODEV;
5060 }
5061
5062 return 0;
5063 }
5064
5065 static int
5066 megasas_set_dma_mask(struct pci_dev *pdev)
5067 {
5068 /*
5069 * All our contollers are capable of performing 64-bit DMA
5070 */
5071 if (IS_DMA64) {
5072 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5073
5074 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5075 goto fail_set_dma_mask;
5076 }
5077 } else {
5078 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5079 goto fail_set_dma_mask;
5080 }
5081 /*
5082 * Ensure that all data structures are allocated in 32-bit
5083 * memory.
5084 */
5085 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5086 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5087 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5088 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5089 dev_info(&pdev->dev, "set 32bit DMA mask"
5090 "and 32 bit consistent mask\n");
5091 else
5092 goto fail_set_dma_mask;
5093 }
5094
5095 return 0;
5096
5097 fail_set_dma_mask:
5098 return 1;
5099 }
5100
5101 /**
5102 * megasas_probe_one - PCI hotplug entry point
5103 * @pdev: PCI device structure
5104 * @id: PCI ids of supported hotplugged adapter
5105 */
5106 static int megasas_probe_one(struct pci_dev *pdev,
5107 const struct pci_device_id *id)
5108 {
5109 int rval, pos, i, j, cpu;
5110 struct Scsi_Host *host;
5111 struct megasas_instance *instance;
5112 u16 control = 0;
5113 struct fusion_context *fusion = NULL;
5114
5115 /* Reset MSI-X in the kdump kernel */
5116 if (reset_devices) {
5117 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5118 if (pos) {
5119 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5120 &control);
5121 if (control & PCI_MSIX_FLAGS_ENABLE) {
5122 dev_info(&pdev->dev, "resetting MSI-X\n");
5123 pci_write_config_word(pdev,
5124 pos + PCI_MSIX_FLAGS,
5125 control &
5126 ~PCI_MSIX_FLAGS_ENABLE);
5127 }
5128 }
5129 }
5130
5131 /*
5132 * Announce PCI information
5133 */
5134 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
5135 pdev->vendor, pdev->device, pdev->subsystem_vendor,
5136 pdev->subsystem_device);
5137
5138 printk("bus %d:slot %d:func %d\n",
5139 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
5140
5141 /*
5142 * PCI prepping: enable device set bus mastering and dma mask
5143 */
5144 rval = pci_enable_device_mem(pdev);
5145
5146 if (rval) {
5147 return rval;
5148 }
5149
5150 pci_set_master(pdev);
5151
5152 if (megasas_set_dma_mask(pdev))
5153 goto fail_set_dma_mask;
5154
5155 host = scsi_host_alloc(&megasas_template,
5156 sizeof(struct megasas_instance));
5157
5158 if (!host) {
5159 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5160 goto fail_alloc_instance;
5161 }
5162
5163 instance = (struct megasas_instance *)host->hostdata;
5164 memset(instance, 0, sizeof(*instance));
5165 atomic_set( &instance->fw_reset_no_pci_access, 0 );
5166 instance->pdev = pdev;
5167
5168 switch (instance->pdev->device) {
5169 case PCI_DEVICE_ID_LSI_FUSION:
5170 case PCI_DEVICE_ID_LSI_PLASMA:
5171 case PCI_DEVICE_ID_LSI_INVADER:
5172 case PCI_DEVICE_ID_LSI_FURY:
5173 {
5174 instance->ctrl_context_pages =
5175 get_order(sizeof(struct fusion_context));
5176 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5177 instance->ctrl_context_pages);
5178 if (!instance->ctrl_context) {
5179 printk(KERN_DEBUG "megasas: Failed to allocate "
5180 "memory for Fusion context info\n");
5181 goto fail_alloc_dma_buf;
5182 }
5183 fusion = instance->ctrl_context;
5184 memset(fusion, 0,
5185 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5186 INIT_LIST_HEAD(&fusion->cmd_pool);
5187 spin_lock_init(&fusion->mpt_pool_lock);
5188 }
5189 break;
5190 default: /* For all other supported controllers */
5191
5192 instance->producer =
5193 pci_alloc_consistent(pdev, sizeof(u32),
5194 &instance->producer_h);
5195 instance->consumer =
5196 pci_alloc_consistent(pdev, sizeof(u32),
5197 &instance->consumer_h);
5198
5199 if (!instance->producer || !instance->consumer) {
5200 printk(KERN_DEBUG "megasas: Failed to allocate"
5201 "memory for producer, consumer\n");
5202 goto fail_alloc_dma_buf;
5203 }
5204
5205 *instance->producer = 0;
5206 *instance->consumer = 0;
5207 break;
5208 }
5209
5210 /* Crash dump feature related initialisation*/
5211 instance->drv_buf_index = 0;
5212 instance->drv_buf_alloc = 0;
5213 instance->crash_dump_fw_support = 0;
5214 instance->crash_dump_app_support = 0;
5215 instance->fw_crash_state = UNAVAILABLE;
5216 spin_lock_init(&instance->crashdump_lock);
5217 instance->crash_dump_buf = NULL;
5218
5219 if (!reset_devices)
5220 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5221 CRASH_DMA_BUF_SIZE,
5222 &instance->crash_dump_h);
5223 if (!instance->crash_dump_buf)
5224 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5225 "crash dump DMA buffer\n");
5226
5227 megasas_poll_wait_aen = 0;
5228 instance->flag_ieee = 0;
5229 instance->ev = NULL;
5230 instance->issuepend_done = 1;
5231 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
5232 instance->is_imr = 0;
5233
5234 instance->evt_detail = pci_alloc_consistent(pdev,
5235 sizeof(struct
5236 megasas_evt_detail),
5237 &instance->evt_detail_h);
5238
5239 if (!instance->evt_detail) {
5240 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5241 "event detail structure\n");
5242 goto fail_alloc_dma_buf;
5243 }
5244
5245 /*
5246 * Initialize locks and queues
5247 */
5248 INIT_LIST_HEAD(&instance->cmd_pool);
5249 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5250
5251 atomic_set(&instance->fw_outstanding,0);
5252
5253 init_waitqueue_head(&instance->int_cmd_wait_q);
5254 init_waitqueue_head(&instance->abort_cmd_wait_q);
5255
5256 spin_lock_init(&instance->mfi_pool_lock);
5257 spin_lock_init(&instance->hba_lock);
5258 spin_lock_init(&instance->completion_lock);
5259
5260 mutex_init(&instance->aen_mutex);
5261 mutex_init(&instance->reset_mutex);
5262
5263 /*
5264 * Initialize PCI related and misc parameters
5265 */
5266 instance->host = host;
5267 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5268 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5269 instance->ctrl_info = NULL;
5270
5271
5272 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5273 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5274 instance->flag_ieee = 1;
5275
5276 megasas_dbg_lvl = 0;
5277 instance->flag = 0;
5278 instance->unload = 1;
5279 instance->last_time = 0;
5280 instance->disableOnlineCtrlReset = 1;
5281 instance->UnevenSpanSupport = 0;
5282
5283 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5284 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5285 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5286 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5287 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5288 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5289 } else
5290 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5291
5292 /*
5293 * Initialize MFI Firmware
5294 */
5295 if (megasas_init_fw(instance))
5296 goto fail_init_mfi;
5297
5298 if (instance->requestorId) {
5299 if (instance->PlasmaFW111) {
5300 instance->vf_affiliation_111 =
5301 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5302 &instance->vf_affiliation_111_h);
5303 if (!instance->vf_affiliation_111)
5304 printk(KERN_WARNING "megasas: Can't allocate "
5305 "memory for VF affiliation buffer\n");
5306 } else {
5307 instance->vf_affiliation =
5308 pci_alloc_consistent(pdev,
5309 (MAX_LOGICAL_DRIVES + 1) *
5310 sizeof(struct MR_LD_VF_AFFILIATION),
5311 &instance->vf_affiliation_h);
5312 if (!instance->vf_affiliation)
5313 printk(KERN_WARNING "megasas: Can't allocate "
5314 "memory for VF affiliation buffer\n");
5315 }
5316 }
5317
5318 retry_irq_register:
5319 /*
5320 * Register IRQ
5321 */
5322 if (instance->msix_vectors) {
5323 cpu = cpumask_first(cpu_online_mask);
5324 for (i = 0; i < instance->msix_vectors; i++) {
5325 instance->irq_context[i].instance = instance;
5326 instance->irq_context[i].MSIxIndex = i;
5327 if (request_irq(instance->msixentry[i].vector,
5328 instance->instancet->service_isr, 0,
5329 "megasas",
5330 &instance->irq_context[i])) {
5331 printk(KERN_DEBUG "megasas: Failed to "
5332 "register IRQ for vector %d.\n", i);
5333 for (j = 0; j < i; j++) {
5334 if (smp_affinity_enable)
5335 irq_set_affinity_hint(
5336 instance->msixentry[j].vector, NULL);
5337 free_irq(
5338 instance->msixentry[j].vector,
5339 &instance->irq_context[j]);
5340 }
5341 /* Retry irq register for IO_APIC */
5342 instance->msix_vectors = 0;
5343 goto retry_irq_register;
5344 }
5345 if (smp_affinity_enable) {
5346 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5347 get_cpu_mask(cpu)))
5348 dev_err(&instance->pdev->dev,
5349 "Error setting affinity hint "
5350 "for cpu %d\n", cpu);
5351 cpu = cpumask_next(cpu, cpu_online_mask);
5352 }
5353 }
5354 } else {
5355 instance->irq_context[0].instance = instance;
5356 instance->irq_context[0].MSIxIndex = 0;
5357 if (request_irq(pdev->irq, instance->instancet->service_isr,
5358 IRQF_SHARED, "megasas",
5359 &instance->irq_context[0])) {
5360 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5361 goto fail_irq;
5362 }
5363 }
5364
5365 instance->instancet->enable_intr(instance);
5366
5367 /*
5368 * Store instance in PCI softstate
5369 */
5370 pci_set_drvdata(pdev, instance);
5371
5372 /*
5373 * Add this controller to megasas_mgmt_info structure so that it
5374 * can be exported to management applications
5375 */
5376 megasas_mgmt_info.count++;
5377 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5378 megasas_mgmt_info.max_index++;
5379
5380 /*
5381 * Register with SCSI mid-layer
5382 */
5383 if (megasas_io_attach(instance))
5384 goto fail_io_attach;
5385
5386 instance->unload = 0;
5387 /*
5388 * Trigger SCSI to scan our drives
5389 */
5390 scsi_scan_host(host);
5391
5392 /*
5393 * Initiate AEN (Asynchronous Event Notification)
5394 */
5395 if (megasas_start_aen(instance)) {
5396 printk(KERN_DEBUG "megasas: start aen failed\n");
5397 goto fail_start_aen;
5398 }
5399
5400 /* Get current SR-IOV LD/VF affiliation */
5401 if (instance->requestorId)
5402 megasas_get_ld_vf_affiliation(instance, 1);
5403
5404 return 0;
5405
5406 fail_start_aen:
5407 fail_io_attach:
5408 megasas_mgmt_info.count--;
5409 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5410 megasas_mgmt_info.max_index--;
5411
5412 instance->instancet->disable_intr(instance);
5413 if (instance->msix_vectors)
5414 for (i = 0; i < instance->msix_vectors; i++) {
5415 if (smp_affinity_enable)
5416 irq_set_affinity_hint(
5417 instance->msixentry[i].vector, NULL);
5418 free_irq(instance->msixentry[i].vector,
5419 &instance->irq_context[i]);
5420 }
5421 else
5422 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5423 fail_irq:
5424 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5425 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5426 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5427 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
5428 megasas_release_fusion(instance);
5429 else
5430 megasas_release_mfi(instance);
5431 fail_init_mfi:
5432 if (instance->msix_vectors)
5433 pci_disable_msix(instance->pdev);
5434 fail_alloc_dma_buf:
5435 if (instance->evt_detail)
5436 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5437 instance->evt_detail,
5438 instance->evt_detail_h);
5439
5440 if (instance->producer)
5441 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5442 instance->producer_h);
5443 if (instance->consumer)
5444 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5445 instance->consumer_h);
5446 scsi_host_put(host);
5447
5448 fail_alloc_instance:
5449 fail_set_dma_mask:
5450 pci_disable_device(pdev);
5451
5452 return -ENODEV;
5453 }
5454
5455 /**
5456 * megasas_flush_cache - Requests FW to flush all its caches
5457 * @instance: Adapter soft state
5458 */
5459 static void megasas_flush_cache(struct megasas_instance *instance)
5460 {
5461 struct megasas_cmd *cmd;
5462 struct megasas_dcmd_frame *dcmd;
5463
5464 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5465 return;
5466
5467 cmd = megasas_get_cmd(instance);
5468
5469 if (!cmd)
5470 return;
5471
5472 dcmd = &cmd->frame->dcmd;
5473
5474 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5475
5476 dcmd->cmd = MFI_CMD_DCMD;
5477 dcmd->cmd_status = 0x0;
5478 dcmd->sge_count = 0;
5479 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5480 dcmd->timeout = 0;
5481 dcmd->pad_0 = 0;
5482 dcmd->data_xfer_len = 0;
5483 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5484 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5485
5486 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5487 dev_err(&instance->pdev->dev, "Command timedout"
5488 " from %s\n", __func__);
5489
5490 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5491 megasas_return_mfi_mpt_pthr(instance, cmd,
5492 cmd->mpt_pthr_cmd_blocked);
5493 else
5494 megasas_return_cmd(instance, cmd);
5495
5496 return;
5497 }
5498
5499 /**
5500 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5501 * @instance: Adapter soft state
5502 * @opcode: Shutdown/Hibernate
5503 */
5504 static void megasas_shutdown_controller(struct megasas_instance *instance,
5505 u32 opcode)
5506 {
5507 struct megasas_cmd *cmd;
5508 struct megasas_dcmd_frame *dcmd;
5509
5510 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5511 return;
5512
5513 cmd = megasas_get_cmd(instance);
5514
5515 if (!cmd)
5516 return;
5517
5518 if (instance->aen_cmd)
5519 megasas_issue_blocked_abort_cmd(instance,
5520 instance->aen_cmd, 30);
5521 if (instance->map_update_cmd)
5522 megasas_issue_blocked_abort_cmd(instance,
5523 instance->map_update_cmd, 30);
5524 dcmd = &cmd->frame->dcmd;
5525
5526 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5527
5528 dcmd->cmd = MFI_CMD_DCMD;
5529 dcmd->cmd_status = 0x0;
5530 dcmd->sge_count = 0;
5531 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5532 dcmd->timeout = 0;
5533 dcmd->pad_0 = 0;
5534 dcmd->data_xfer_len = 0;
5535 dcmd->opcode = cpu_to_le32(opcode);
5536
5537 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5538 dev_err(&instance->pdev->dev, "Command timedout"
5539 "from %s\n", __func__);
5540
5541 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5542 megasas_return_mfi_mpt_pthr(instance, cmd,
5543 cmd->mpt_pthr_cmd_blocked);
5544 else
5545 megasas_return_cmd(instance, cmd);
5546
5547 return;
5548 }
5549
5550 #ifdef CONFIG_PM
5551 /**
5552 * megasas_suspend - driver suspend entry point
5553 * @pdev: PCI device structure
5554 * @state: PCI power state to suspend routine
5555 */
5556 static int
5557 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5558 {
5559 struct Scsi_Host *host;
5560 struct megasas_instance *instance;
5561 int i;
5562
5563 instance = pci_get_drvdata(pdev);
5564 host = instance->host;
5565 instance->unload = 1;
5566
5567 /* Shutdown SR-IOV heartbeat timer */
5568 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5569 del_timer_sync(&instance->sriov_heartbeat_timer);
5570
5571 megasas_flush_cache(instance);
5572 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
5573
5574 /* cancel the delayed work if this work still in queue */
5575 if (instance->ev != NULL) {
5576 struct megasas_aen_event *ev = instance->ev;
5577 cancel_delayed_work_sync(&ev->hotplug_work);
5578 instance->ev = NULL;
5579 }
5580
5581 tasklet_kill(&instance->isr_tasklet);
5582
5583 pci_set_drvdata(instance->pdev, instance);
5584 instance->instancet->disable_intr(instance);
5585
5586 if (instance->msix_vectors)
5587 for (i = 0; i < instance->msix_vectors; i++) {
5588 if (smp_affinity_enable)
5589 irq_set_affinity_hint(
5590 instance->msixentry[i].vector, NULL);
5591 free_irq(instance->msixentry[i].vector,
5592 &instance->irq_context[i]);
5593 }
5594 else
5595 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5596 if (instance->msix_vectors)
5597 pci_disable_msix(instance->pdev);
5598
5599 pci_save_state(pdev);
5600 pci_disable_device(pdev);
5601
5602 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5603
5604 return 0;
5605 }
5606
5607 /**
5608 * megasas_resume- driver resume entry point
5609 * @pdev: PCI device structure
5610 */
5611 static int
5612 megasas_resume(struct pci_dev *pdev)
5613 {
5614 int rval, i, j, cpu;
5615 struct Scsi_Host *host;
5616 struct megasas_instance *instance;
5617
5618 instance = pci_get_drvdata(pdev);
5619 host = instance->host;
5620 pci_set_power_state(pdev, PCI_D0);
5621 pci_enable_wake(pdev, PCI_D0, 0);
5622 pci_restore_state(pdev);
5623
5624 /*
5625 * PCI prepping: enable device set bus mastering and dma mask
5626 */
5627 rval = pci_enable_device_mem(pdev);
5628
5629 if (rval) {
5630 printk(KERN_ERR "megasas: Enable device failed\n");
5631 return rval;
5632 }
5633
5634 pci_set_master(pdev);
5635
5636 if (megasas_set_dma_mask(pdev))
5637 goto fail_set_dma_mask;
5638
5639 /*
5640 * Initialize MFI Firmware
5641 */
5642
5643 atomic_set(&instance->fw_outstanding, 0);
5644
5645 /*
5646 * We expect the FW state to be READY
5647 */
5648 if (megasas_transition_to_ready(instance, 0))
5649 goto fail_ready_state;
5650
5651 /* Now re-enable MSI-X */
5652 if (instance->msix_vectors &&
5653 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5654 instance->msix_vectors))
5655 goto fail_reenable_msix;
5656
5657 switch (instance->pdev->device) {
5658 case PCI_DEVICE_ID_LSI_FUSION:
5659 case PCI_DEVICE_ID_LSI_PLASMA:
5660 case PCI_DEVICE_ID_LSI_INVADER:
5661 case PCI_DEVICE_ID_LSI_FURY:
5662 {
5663 megasas_reset_reply_desc(instance);
5664 if (megasas_ioc_init_fusion(instance)) {
5665 megasas_free_cmds(instance);
5666 megasas_free_cmds_fusion(instance);
5667 goto fail_init_mfi;
5668 }
5669 if (!megasas_get_map_info(instance))
5670 megasas_sync_map_info(instance);
5671 }
5672 break;
5673 default:
5674 *instance->producer = 0;
5675 *instance->consumer = 0;
5676 if (megasas_issue_init_mfi(instance))
5677 goto fail_init_mfi;
5678 break;
5679 }
5680
5681 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5682 (unsigned long)instance);
5683
5684 /*
5685 * Register IRQ
5686 */
5687 if (instance->msix_vectors) {
5688 cpu = cpumask_first(cpu_online_mask);
5689 for (i = 0 ; i < instance->msix_vectors; i++) {
5690 instance->irq_context[i].instance = instance;
5691 instance->irq_context[i].MSIxIndex = i;
5692 if (request_irq(instance->msixentry[i].vector,
5693 instance->instancet->service_isr, 0,
5694 "megasas",
5695 &instance->irq_context[i])) {
5696 printk(KERN_DEBUG "megasas: Failed to "
5697 "register IRQ for vector %d.\n", i);
5698 for (j = 0; j < i; j++) {
5699 if (smp_affinity_enable)
5700 irq_set_affinity_hint(
5701 instance->msixentry[j].vector, NULL);
5702 free_irq(
5703 instance->msixentry[j].vector,
5704 &instance->irq_context[j]);
5705 }
5706 goto fail_irq;
5707 }
5708
5709 if (smp_affinity_enable) {
5710 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5711 get_cpu_mask(cpu)))
5712 dev_err(&instance->pdev->dev, "Error "
5713 "setting affinity hint for cpu "
5714 "%d\n", cpu);
5715 cpu = cpumask_next(cpu, cpu_online_mask);
5716 }
5717 }
5718 } else {
5719 instance->irq_context[0].instance = instance;
5720 instance->irq_context[0].MSIxIndex = 0;
5721 if (request_irq(pdev->irq, instance->instancet->service_isr,
5722 IRQF_SHARED, "megasas",
5723 &instance->irq_context[0])) {
5724 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5725 goto fail_irq;
5726 }
5727 }
5728
5729 /* Re-launch SR-IOV heartbeat timer */
5730 if (instance->requestorId) {
5731 if (!megasas_sriov_start_heartbeat(instance, 0))
5732 megasas_start_timer(instance,
5733 &instance->sriov_heartbeat_timer,
5734 megasas_sriov_heartbeat_handler,
5735 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5736 else
5737 instance->skip_heartbeat_timer_del = 1;
5738 }
5739
5740 instance->instancet->enable_intr(instance);
5741 instance->unload = 0;
5742
5743 /*
5744 * Initiate AEN (Asynchronous Event Notification)
5745 */
5746 if (megasas_start_aen(instance))
5747 printk(KERN_ERR "megasas: Start AEN failed\n");
5748
5749 return 0;
5750
5751 fail_irq:
5752 fail_init_mfi:
5753 if (instance->evt_detail)
5754 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5755 instance->evt_detail,
5756 instance->evt_detail_h);
5757
5758 if (instance->producer)
5759 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5760 instance->producer_h);
5761 if (instance->consumer)
5762 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5763 instance->consumer_h);
5764 scsi_host_put(host);
5765
5766 fail_set_dma_mask:
5767 fail_ready_state:
5768 fail_reenable_msix:
5769
5770 pci_disable_device(pdev);
5771
5772 return -ENODEV;
5773 }
5774 #else
5775 #define megasas_suspend NULL
5776 #define megasas_resume NULL
5777 #endif
5778
5779 /**
5780 * megasas_detach_one - PCI hot"un"plug entry point
5781 * @pdev: PCI device structure
5782 */
5783 static void megasas_detach_one(struct pci_dev *pdev)
5784 {
5785 int i;
5786 struct Scsi_Host *host;
5787 struct megasas_instance *instance;
5788 struct fusion_context *fusion;
5789
5790 instance = pci_get_drvdata(pdev);
5791 instance->unload = 1;
5792 host = instance->host;
5793 fusion = instance->ctrl_context;
5794
5795 /* Shutdown SR-IOV heartbeat timer */
5796 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5797 del_timer_sync(&instance->sriov_heartbeat_timer);
5798
5799 if (instance->fw_crash_state != UNAVAILABLE)
5800 megasas_free_host_crash_buffer(instance);
5801 scsi_remove_host(instance->host);
5802 megasas_flush_cache(instance);
5803 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5804
5805 /* cancel the delayed work if this work still in queue*/
5806 if (instance->ev != NULL) {
5807 struct megasas_aen_event *ev = instance->ev;
5808 cancel_delayed_work_sync(&ev->hotplug_work);
5809 instance->ev = NULL;
5810 }
5811
5812 /* cancel all wait events */
5813 wake_up_all(&instance->int_cmd_wait_q);
5814
5815 tasklet_kill(&instance->isr_tasklet);
5816
5817 /*
5818 * Take the instance off the instance array. Note that we will not
5819 * decrement the max_index. We let this array be sparse array
5820 */
5821 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5822 if (megasas_mgmt_info.instance[i] == instance) {
5823 megasas_mgmt_info.count--;
5824 megasas_mgmt_info.instance[i] = NULL;
5825
5826 break;
5827 }
5828 }
5829
5830 instance->instancet->disable_intr(instance);
5831
5832 if (instance->msix_vectors)
5833 for (i = 0; i < instance->msix_vectors; i++) {
5834 if (smp_affinity_enable)
5835 irq_set_affinity_hint(
5836 instance->msixentry[i].vector, NULL);
5837 free_irq(instance->msixentry[i].vector,
5838 &instance->irq_context[i]);
5839 }
5840 else
5841 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5842 if (instance->msix_vectors)
5843 pci_disable_msix(instance->pdev);
5844
5845 switch (instance->pdev->device) {
5846 case PCI_DEVICE_ID_LSI_FUSION:
5847 case PCI_DEVICE_ID_LSI_PLASMA:
5848 case PCI_DEVICE_ID_LSI_INVADER:
5849 case PCI_DEVICE_ID_LSI_FURY:
5850 megasas_release_fusion(instance);
5851 for (i = 0; i < 2 ; i++) {
5852 if (fusion->ld_map[i])
5853 dma_free_coherent(&instance->pdev->dev,
5854 fusion->max_map_sz,
5855 fusion->ld_map[i],
5856 fusion->ld_map_phys[i]);
5857 if (fusion->ld_drv_map[i])
5858 free_pages((ulong)fusion->ld_drv_map[i],
5859 fusion->drv_map_pages);
5860 }
5861 free_pages((ulong)instance->ctrl_context,
5862 instance->ctrl_context_pages);
5863 break;
5864 default:
5865 megasas_release_mfi(instance);
5866 pci_free_consistent(pdev, sizeof(u32),
5867 instance->producer,
5868 instance->producer_h);
5869 pci_free_consistent(pdev, sizeof(u32),
5870 instance->consumer,
5871 instance->consumer_h);
5872 break;
5873 }
5874
5875 kfree(instance->ctrl_info);
5876
5877 if (instance->evt_detail)
5878 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5879 instance->evt_detail, instance->evt_detail_h);
5880
5881 if (instance->vf_affiliation)
5882 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5883 sizeof(struct MR_LD_VF_AFFILIATION),
5884 instance->vf_affiliation,
5885 instance->vf_affiliation_h);
5886
5887 if (instance->vf_affiliation_111)
5888 pci_free_consistent(pdev,
5889 sizeof(struct MR_LD_VF_AFFILIATION_111),
5890 instance->vf_affiliation_111,
5891 instance->vf_affiliation_111_h);
5892
5893 if (instance->hb_host_mem)
5894 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5895 instance->hb_host_mem,
5896 instance->hb_host_mem_h);
5897
5898 if (instance->crash_dump_buf)
5899 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5900 instance->crash_dump_buf, instance->crash_dump_h);
5901
5902 scsi_host_put(host);
5903
5904 pci_disable_device(pdev);
5905
5906 return;
5907 }
5908
5909 /**
5910 * megasas_shutdown - Shutdown entry point
5911 * @device: Generic device structure
5912 */
5913 static void megasas_shutdown(struct pci_dev *pdev)
5914 {
5915 int i;
5916 struct megasas_instance *instance = pci_get_drvdata(pdev);
5917
5918 instance->unload = 1;
5919 megasas_flush_cache(instance);
5920 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5921 instance->instancet->disable_intr(instance);
5922 if (instance->msix_vectors)
5923 for (i = 0; i < instance->msix_vectors; i++) {
5924 if (smp_affinity_enable)
5925 irq_set_affinity_hint(
5926 instance->msixentry[i].vector, NULL);
5927 free_irq(instance->msixentry[i].vector,
5928 &instance->irq_context[i]);
5929 }
5930 else
5931 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5932 if (instance->msix_vectors)
5933 pci_disable_msix(instance->pdev);
5934 }
5935
5936 /**
5937 * megasas_mgmt_open - char node "open" entry point
5938 */
5939 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5940 {
5941 /*
5942 * Allow only those users with admin rights
5943 */
5944 if (!capable(CAP_SYS_ADMIN))
5945 return -EACCES;
5946
5947 return 0;
5948 }
5949
5950 /**
5951 * megasas_mgmt_fasync - Async notifier registration from applications
5952 *
5953 * This function adds the calling process to a driver global queue. When an
5954 * event occurs, SIGIO will be sent to all processes in this queue.
5955 */
5956 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5957 {
5958 int rc;
5959
5960 mutex_lock(&megasas_async_queue_mutex);
5961
5962 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5963
5964 mutex_unlock(&megasas_async_queue_mutex);
5965
5966 if (rc >= 0) {
5967 /* For sanity check when we get ioctl */
5968 filep->private_data = filep;
5969 return 0;
5970 }
5971
5972 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5973
5974 return rc;
5975 }
5976
5977 /**
5978 * megasas_mgmt_poll - char node "poll" entry point
5979 * */
5980 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5981 {
5982 unsigned int mask;
5983 unsigned long flags;
5984 poll_wait(file, &megasas_poll_wait, wait);
5985 spin_lock_irqsave(&poll_aen_lock, flags);
5986 if (megasas_poll_wait_aen)
5987 mask = (POLLIN | POLLRDNORM);
5988
5989 else
5990 mask = 0;
5991 megasas_poll_wait_aen = 0;
5992 spin_unlock_irqrestore(&poll_aen_lock, flags);
5993 return mask;
5994 }
5995
5996 /*
5997 * megasas_set_crash_dump_params_ioctl:
5998 * Send CRASH_DUMP_MODE DCMD to all controllers
5999 * @cmd: MFI command frame
6000 */
6001
6002 static int megasas_set_crash_dump_params_ioctl(
6003 struct megasas_cmd *cmd)
6004 {
6005 struct megasas_instance *local_instance;
6006 int i, error = 0;
6007 int crash_support;
6008
6009 crash_support = cmd->frame->dcmd.mbox.w[0];
6010
6011 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6012 local_instance = megasas_mgmt_info.instance[i];
6013 if (local_instance && local_instance->crash_dump_drv_support) {
6014 if ((local_instance->adprecovery ==
6015 MEGASAS_HBA_OPERATIONAL) &&
6016 !megasas_set_crash_dump_params(local_instance,
6017 crash_support)) {
6018 local_instance->crash_dump_app_support =
6019 crash_support;
6020 dev_info(&local_instance->pdev->dev,
6021 "Application firmware crash "
6022 "dump mode set success\n");
6023 error = 0;
6024 } else {
6025 dev_info(&local_instance->pdev->dev,
6026 "Application firmware crash "
6027 "dump mode set failed\n");
6028 error = -1;
6029 }
6030 }
6031 }
6032 return error;
6033 }
6034
6035 /**
6036 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
6037 * @instance: Adapter soft state
6038 * @argp: User's ioctl packet
6039 */
6040 static int
6041 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6042 struct megasas_iocpacket __user * user_ioc,
6043 struct megasas_iocpacket *ioc)
6044 {
6045 struct megasas_sge32 *kern_sge32;
6046 struct megasas_cmd *cmd;
6047 void *kbuff_arr[MAX_IOCTL_SGE];
6048 dma_addr_t buf_handle = 0;
6049 int error = 0, i;
6050 void *sense = NULL;
6051 dma_addr_t sense_handle;
6052 unsigned long *sense_ptr;
6053
6054 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6055
6056 if (ioc->sge_count > MAX_IOCTL_SGE) {
6057 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
6058 ioc->sge_count, MAX_IOCTL_SGE);
6059 return -EINVAL;
6060 }
6061
6062 cmd = megasas_get_cmd(instance);
6063 if (!cmd) {
6064 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
6065 return -ENOMEM;
6066 }
6067
6068 /*
6069 * User's IOCTL packet has 2 frames (maximum). Copy those two
6070 * frames into our cmd's frames. cmd->frame's context will get
6071 * overwritten when we copy from user's frames. So set that value
6072 * alone separately
6073 */
6074 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6075 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6076 cmd->frame->hdr.pad_0 = 0;
6077 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6078 MFI_FRAME_SGL64 |
6079 MFI_FRAME_SENSE64));
6080
6081 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6082 error = megasas_set_crash_dump_params_ioctl(cmd);
6083 megasas_return_cmd(instance, cmd);
6084 return error;
6085 }
6086
6087 /*
6088 * The management interface between applications and the fw uses
6089 * MFI frames. E.g, RAID configuration changes, LD property changes
6090 * etc are accomplishes through different kinds of MFI frames. The
6091 * driver needs to care only about substituting user buffers with
6092 * kernel buffers in SGLs. The location of SGL is embedded in the
6093 * struct iocpacket itself.
6094 */
6095 kern_sge32 = (struct megasas_sge32 *)
6096 ((unsigned long)cmd->frame + ioc->sgl_off);
6097
6098 /*
6099 * For each user buffer, create a mirror buffer and copy in
6100 */
6101 for (i = 0; i < ioc->sge_count; i++) {
6102 if (!ioc->sgl[i].iov_len)
6103 continue;
6104
6105 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6106 ioc->sgl[i].iov_len,
6107 &buf_handle, GFP_KERNEL);
6108 if (!kbuff_arr[i]) {
6109 printk(KERN_DEBUG "megasas: Failed to alloc "
6110 "kernel SGL buffer for IOCTL \n");
6111 error = -ENOMEM;
6112 goto out;
6113 }
6114
6115 /*
6116 * We don't change the dma_coherent_mask, so
6117 * pci_alloc_consistent only returns 32bit addresses
6118 */
6119 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6120 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6121
6122 /*
6123 * We created a kernel buffer corresponding to the
6124 * user buffer. Now copy in from the user buffer
6125 */
6126 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6127 (u32) (ioc->sgl[i].iov_len))) {
6128 error = -EFAULT;
6129 goto out;
6130 }
6131 }
6132
6133 if (ioc->sense_len) {
6134 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6135 &sense_handle, GFP_KERNEL);
6136 if (!sense) {
6137 error = -ENOMEM;
6138 goto out;
6139 }
6140
6141 sense_ptr =
6142 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6143 *sense_ptr = cpu_to_le32(sense_handle);
6144 }
6145
6146 /*
6147 * Set the sync_cmd flag so that the ISR knows not to complete this
6148 * cmd to the SCSI mid-layer
6149 */
6150 cmd->sync_cmd = 1;
6151 megasas_issue_blocked_cmd(instance, cmd, 0);
6152 cmd->sync_cmd = 0;
6153
6154 if (instance->unload == 1) {
6155 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6156 "don't submit data to application\n");
6157 goto out;
6158 }
6159 /*
6160 * copy out the kernel buffers to user buffers
6161 */
6162 for (i = 0; i < ioc->sge_count; i++) {
6163 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6164 ioc->sgl[i].iov_len)) {
6165 error = -EFAULT;
6166 goto out;
6167 }
6168 }
6169
6170 /*
6171 * copy out the sense
6172 */
6173 if (ioc->sense_len) {
6174 /*
6175 * sense_ptr points to the location that has the user
6176 * sense buffer address
6177 */
6178 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6179 ioc->sense_off);
6180
6181 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6182 sense, ioc->sense_len)) {
6183 printk(KERN_ERR "megasas: Failed to copy out to user "
6184 "sense data\n");
6185 error = -EFAULT;
6186 goto out;
6187 }
6188 }
6189
6190 /*
6191 * copy the status codes returned by the fw
6192 */
6193 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6194 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6195 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6196 error = -EFAULT;
6197 }
6198
6199 out:
6200 if (sense) {
6201 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6202 sense, sense_handle);
6203 }
6204
6205 for (i = 0; i < ioc->sge_count; i++) {
6206 if (kbuff_arr[i])
6207 dma_free_coherent(&instance->pdev->dev,
6208 le32_to_cpu(kern_sge32[i].length),
6209 kbuff_arr[i],
6210 le32_to_cpu(kern_sge32[i].phys_addr));
6211 kbuff_arr[i] = NULL;
6212 }
6213
6214 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
6215 megasas_return_mfi_mpt_pthr(instance, cmd,
6216 cmd->mpt_pthr_cmd_blocked);
6217 else
6218 megasas_return_cmd(instance, cmd);
6219 return error;
6220 }
6221
6222 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6223 {
6224 struct megasas_iocpacket __user *user_ioc =
6225 (struct megasas_iocpacket __user *)arg;
6226 struct megasas_iocpacket *ioc;
6227 struct megasas_instance *instance;
6228 int error;
6229 int i;
6230 unsigned long flags;
6231 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6232
6233 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6234 if (!ioc)
6235 return -ENOMEM;
6236
6237 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6238 error = -EFAULT;
6239 goto out_kfree_ioc;
6240 }
6241
6242 instance = megasas_lookup_instance(ioc->host_no);
6243 if (!instance) {
6244 error = -ENODEV;
6245 goto out_kfree_ioc;
6246 }
6247
6248 /* Adjust ioctl wait time for VF mode */
6249 if (instance->requestorId)
6250 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6251
6252 /* Block ioctls in VF mode */
6253 if (instance->requestorId && !allow_vf_ioctls) {
6254 error = -ENODEV;
6255 goto out_kfree_ioc;
6256 }
6257
6258 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6259 printk(KERN_ERR "Controller in crit error\n");
6260 error = -ENODEV;
6261 goto out_kfree_ioc;
6262 }
6263
6264 if (instance->unload == 1) {
6265 error = -ENODEV;
6266 goto out_kfree_ioc;
6267 }
6268
6269 if (down_interruptible(&instance->ioctl_sem)) {
6270 error = -ERESTARTSYS;
6271 goto out_kfree_ioc;
6272 }
6273
6274 for (i = 0; i < wait_time; i++) {
6275
6276 spin_lock_irqsave(&instance->hba_lock, flags);
6277 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6278 spin_unlock_irqrestore(&instance->hba_lock, flags);
6279 break;
6280 }
6281 spin_unlock_irqrestore(&instance->hba_lock, flags);
6282
6283 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6284 printk(KERN_NOTICE "megasas: waiting"
6285 "for controller reset to finish\n");
6286 }
6287
6288 msleep(1000);
6289 }
6290
6291 spin_lock_irqsave(&instance->hba_lock, flags);
6292 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6293 spin_unlock_irqrestore(&instance->hba_lock, flags);
6294
6295 printk(KERN_ERR "megaraid_sas: timed out while"
6296 "waiting for HBA to recover\n");
6297 error = -ENODEV;
6298 goto out_up;
6299 }
6300 spin_unlock_irqrestore(&instance->hba_lock, flags);
6301
6302 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6303 out_up:
6304 up(&instance->ioctl_sem);
6305
6306 out_kfree_ioc:
6307 kfree(ioc);
6308 return error;
6309 }
6310
6311 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6312 {
6313 struct megasas_instance *instance;
6314 struct megasas_aen aen;
6315 int error;
6316 int i;
6317 unsigned long flags;
6318 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6319
6320 if (file->private_data != file) {
6321 printk(KERN_DEBUG "megasas: fasync_helper was not "
6322 "called first\n");
6323 return -EINVAL;
6324 }
6325
6326 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6327 return -EFAULT;
6328
6329 instance = megasas_lookup_instance(aen.host_no);
6330
6331 if (!instance)
6332 return -ENODEV;
6333
6334 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6335 return -ENODEV;
6336 }
6337
6338 if (instance->unload == 1) {
6339 return -ENODEV;
6340 }
6341
6342 for (i = 0; i < wait_time; i++) {
6343
6344 spin_lock_irqsave(&instance->hba_lock, flags);
6345 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6346 spin_unlock_irqrestore(&instance->hba_lock,
6347 flags);
6348 break;
6349 }
6350
6351 spin_unlock_irqrestore(&instance->hba_lock, flags);
6352
6353 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6354 printk(KERN_NOTICE "megasas: waiting for"
6355 "controller reset to finish\n");
6356 }
6357
6358 msleep(1000);
6359 }
6360
6361 spin_lock_irqsave(&instance->hba_lock, flags);
6362 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6363 spin_unlock_irqrestore(&instance->hba_lock, flags);
6364 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6365 "for HBA to recover.\n");
6366 return -ENODEV;
6367 }
6368 spin_unlock_irqrestore(&instance->hba_lock, flags);
6369
6370 mutex_lock(&instance->aen_mutex);
6371 error = megasas_register_aen(instance, aen.seq_num,
6372 aen.class_locale_word);
6373 mutex_unlock(&instance->aen_mutex);
6374 return error;
6375 }
6376
6377 /**
6378 * megasas_mgmt_ioctl - char node ioctl entry point
6379 */
6380 static long
6381 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6382 {
6383 switch (cmd) {
6384 case MEGASAS_IOC_FIRMWARE:
6385 return megasas_mgmt_ioctl_fw(file, arg);
6386
6387 case MEGASAS_IOC_GET_AEN:
6388 return megasas_mgmt_ioctl_aen(file, arg);
6389 }
6390
6391 return -ENOTTY;
6392 }
6393
6394 #ifdef CONFIG_COMPAT
6395 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6396 {
6397 struct compat_megasas_iocpacket __user *cioc =
6398 (struct compat_megasas_iocpacket __user *)arg;
6399 struct megasas_iocpacket __user *ioc =
6400 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6401 int i;
6402 int error = 0;
6403 compat_uptr_t ptr;
6404
6405 if (clear_user(ioc, sizeof(*ioc)))
6406 return -EFAULT;
6407
6408 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6409 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6410 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6411 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6412 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6413 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6414 return -EFAULT;
6415
6416 /*
6417 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6418 * sense_len is not null, so prepare the 64bit value under
6419 * the same condition.
6420 */
6421 if (ioc->sense_len) {
6422 void __user **sense_ioc_ptr =
6423 (void __user **)(ioc->frame.raw + ioc->sense_off);
6424 compat_uptr_t *sense_cioc_ptr =
6425 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6426 if (get_user(ptr, sense_cioc_ptr) ||
6427 put_user(compat_ptr(ptr), sense_ioc_ptr))
6428 return -EFAULT;
6429 }
6430
6431 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6432 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6433 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6434 copy_in_user(&ioc->sgl[i].iov_len,
6435 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6436 return -EFAULT;
6437 }
6438
6439 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6440
6441 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6442 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6443 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6444 return -EFAULT;
6445 }
6446 return error;
6447 }
6448
6449 static long
6450 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6451 unsigned long arg)
6452 {
6453 switch (cmd) {
6454 case MEGASAS_IOC_FIRMWARE32:
6455 return megasas_mgmt_compat_ioctl_fw(file, arg);
6456 case MEGASAS_IOC_GET_AEN:
6457 return megasas_mgmt_ioctl_aen(file, arg);
6458 }
6459
6460 return -ENOTTY;
6461 }
6462 #endif
6463
6464 /*
6465 * File operations structure for management interface
6466 */
6467 static const struct file_operations megasas_mgmt_fops = {
6468 .owner = THIS_MODULE,
6469 .open = megasas_mgmt_open,
6470 .fasync = megasas_mgmt_fasync,
6471 .unlocked_ioctl = megasas_mgmt_ioctl,
6472 .poll = megasas_mgmt_poll,
6473 #ifdef CONFIG_COMPAT
6474 .compat_ioctl = megasas_mgmt_compat_ioctl,
6475 #endif
6476 .llseek = noop_llseek,
6477 };
6478
6479 /*
6480 * PCI hotplug support registration structure
6481 */
6482 static struct pci_driver megasas_pci_driver = {
6483
6484 .name = "megaraid_sas",
6485 .id_table = megasas_pci_table,
6486 .probe = megasas_probe_one,
6487 .remove = megasas_detach_one,
6488 .suspend = megasas_suspend,
6489 .resume = megasas_resume,
6490 .shutdown = megasas_shutdown,
6491 };
6492
6493 /*
6494 * Sysfs driver attributes
6495 */
6496 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6497 {
6498 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6499 MEGASAS_VERSION);
6500 }
6501
6502 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6503
6504 static ssize_t
6505 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6506 {
6507 return sprintf(buf, "%u\n", support_poll_for_event);
6508 }
6509
6510 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6511 megasas_sysfs_show_support_poll_for_event, NULL);
6512
6513 static ssize_t
6514 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6515 {
6516 return sprintf(buf, "%u\n", support_device_change);
6517 }
6518
6519 static DRIVER_ATTR(support_device_change, S_IRUGO,
6520 megasas_sysfs_show_support_device_change, NULL);
6521
6522 static ssize_t
6523 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6524 {
6525 return sprintf(buf, "%u\n", megasas_dbg_lvl);
6526 }
6527
6528 static ssize_t
6529 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6530 {
6531 int retval = count;
6532 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6533 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6534 retval = -EINVAL;
6535 }
6536 return retval;
6537 }
6538
6539 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6540 megasas_sysfs_set_dbg_lvl);
6541
6542 static void
6543 megasas_aen_polling(struct work_struct *work)
6544 {
6545 struct megasas_aen_event *ev =
6546 container_of(work, struct megasas_aen_event, hotplug_work.work);
6547 struct megasas_instance *instance = ev->instance;
6548 union megasas_evt_class_locale class_locale;
6549 struct Scsi_Host *host;
6550 struct scsi_device *sdev1;
6551 u16 pd_index = 0;
6552 u16 ld_index = 0;
6553 int i, j, doscan = 0;
6554 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
6555 int error;
6556
6557 if (!instance) {
6558 printk(KERN_ERR "invalid instance!\n");
6559 kfree(ev);
6560 return;
6561 }
6562
6563 /* Adjust event workqueue thread wait time for VF mode */
6564 if (instance->requestorId)
6565 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6566
6567 /* Don't run the event workqueue thread if OCR is running */
6568 for (i = 0; i < wait_time; i++) {
6569 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6570 break;
6571 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6572 printk(KERN_NOTICE "megasas: %s waiting for "
6573 "controller reset to finish for scsi%d\n",
6574 __func__, instance->host->host_no);
6575 }
6576 msleep(1000);
6577 }
6578
6579 instance->ev = NULL;
6580 host = instance->host;
6581 if (instance->evt_detail) {
6582
6583 switch (le32_to_cpu(instance->evt_detail->code)) {
6584 case MR_EVT_PD_INSERTED:
6585 if (megasas_get_pd_list(instance) == 0) {
6586 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6587 for (j = 0;
6588 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6589 j++) {
6590
6591 pd_index =
6592 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6593
6594 sdev1 =
6595 scsi_device_lookup(host, i, j, 0);
6596
6597 if (instance->pd_list[pd_index].driveState
6598 == MR_PD_STATE_SYSTEM) {
6599 if (!sdev1) {
6600 scsi_add_device(host, i, j, 0);
6601 }
6602
6603 if (sdev1)
6604 scsi_device_put(sdev1);
6605 }
6606 }
6607 }
6608 }
6609 doscan = 0;
6610 break;
6611
6612 case MR_EVT_PD_REMOVED:
6613 if (megasas_get_pd_list(instance) == 0) {
6614 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6615 for (j = 0;
6616 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6617 j++) {
6618
6619 pd_index =
6620 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6621
6622 sdev1 =
6623 scsi_device_lookup(host, i, j, 0);
6624
6625 if (instance->pd_list[pd_index].driveState
6626 == MR_PD_STATE_SYSTEM) {
6627 if (sdev1) {
6628 scsi_device_put(sdev1);
6629 }
6630 } else {
6631 if (sdev1) {
6632 scsi_remove_device(sdev1);
6633 scsi_device_put(sdev1);
6634 }
6635 }
6636 }
6637 }
6638 }
6639 doscan = 0;
6640 break;
6641
6642 case MR_EVT_LD_OFFLINE:
6643 case MR_EVT_CFG_CLEARED:
6644 case MR_EVT_LD_DELETED:
6645 if (!instance->requestorId ||
6646 (instance->requestorId &&
6647 megasas_get_ld_vf_affiliation(instance, 0))) {
6648 if (megasas_ld_list_query(instance,
6649 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6650 megasas_get_ld_list(instance);
6651 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6652 for (j = 0;
6653 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6654 j++) {
6655
6656 ld_index =
6657 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6658
6659 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6660
6661 if (instance->ld_ids[ld_index]
6662 != 0xff) {
6663 if (sdev1)
6664 scsi_device_put(sdev1);
6665 } else {
6666 if (sdev1) {
6667 scsi_remove_device(sdev1);
6668 scsi_device_put(sdev1);
6669 }
6670 }
6671 }
6672 }
6673 doscan = 0;
6674 }
6675 break;
6676 case MR_EVT_LD_CREATED:
6677 if (!instance->requestorId ||
6678 (instance->requestorId &&
6679 megasas_get_ld_vf_affiliation(instance, 0))) {
6680 if (megasas_ld_list_query(instance,
6681 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6682 megasas_get_ld_list(instance);
6683 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6684 for (j = 0;
6685 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6686 j++) {
6687 ld_index =
6688 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6689
6690 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6691
6692 if (instance->ld_ids[ld_index]
6693 != 0xff) {
6694 if (!sdev1)
6695 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6696 }
6697 if (sdev1)
6698 scsi_device_put(sdev1);
6699 }
6700 }
6701 doscan = 0;
6702 }
6703 break;
6704 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
6705 case MR_EVT_FOREIGN_CFG_IMPORTED:
6706 case MR_EVT_LD_STATE_CHANGE:
6707 doscan = 1;
6708 break;
6709 default:
6710 doscan = 0;
6711 break;
6712 }
6713 } else {
6714 printk(KERN_ERR "invalid evt_detail!\n");
6715 kfree(ev);
6716 return;
6717 }
6718
6719 if (doscan) {
6720 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6721 instance->host->host_no);
6722 if (megasas_get_pd_list(instance) == 0) {
6723 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6724 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6725 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6726 sdev1 = scsi_device_lookup(host, i, j, 0);
6727 if (instance->pd_list[pd_index].driveState ==
6728 MR_PD_STATE_SYSTEM) {
6729 if (!sdev1) {
6730 scsi_add_device(host, i, j, 0);
6731 }
6732 if (sdev1)
6733 scsi_device_put(sdev1);
6734 } else {
6735 if (sdev1) {
6736 scsi_remove_device(sdev1);
6737 scsi_device_put(sdev1);
6738 }
6739 }
6740 }
6741 }
6742 }
6743
6744 if (!instance->requestorId ||
6745 (instance->requestorId &&
6746 megasas_get_ld_vf_affiliation(instance, 0))) {
6747 if (megasas_ld_list_query(instance,
6748 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6749 megasas_get_ld_list(instance);
6750 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6751 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6752 j++) {
6753 ld_index =
6754 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6755
6756 sdev1 = scsi_device_lookup(host,
6757 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6758 if (instance->ld_ids[ld_index]
6759 != 0xff) {
6760 if (!sdev1)
6761 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6762 else
6763 scsi_device_put(sdev1);
6764 } else {
6765 if (sdev1) {
6766 scsi_remove_device(sdev1);
6767 scsi_device_put(sdev1);
6768 }
6769 }
6770 }
6771 }
6772 }
6773 }
6774
6775 if ( instance->aen_cmd != NULL ) {
6776 kfree(ev);
6777 return ;
6778 }
6779
6780 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
6781
6782 /* Register AEN with FW for latest sequence number plus 1 */
6783 class_locale.members.reserved = 0;
6784 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6785 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6786 mutex_lock(&instance->aen_mutex);
6787 error = megasas_register_aen(instance, seq_num,
6788 class_locale.word);
6789 mutex_unlock(&instance->aen_mutex);
6790
6791 if (error)
6792 printk(KERN_ERR "register aen failed error %x\n", error);
6793
6794 kfree(ev);
6795 }
6796
6797 /**
6798 * megasas_init - Driver load entry point
6799 */
6800 static int __init megasas_init(void)
6801 {
6802 int rval;
6803
6804 /*
6805 * Announce driver version and other information
6806 */
6807 pr_info("megasas: %s\n", MEGASAS_VERSION);
6808
6809 spin_lock_init(&poll_aen_lock);
6810
6811 support_poll_for_event = 2;
6812 support_device_change = 1;
6813
6814 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6815
6816 /*
6817 * Register character device node
6818 */
6819 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6820
6821 if (rval < 0) {
6822 printk(KERN_DEBUG "megasas: failed to open device node\n");
6823 return rval;
6824 }
6825
6826 megasas_mgmt_majorno = rval;
6827
6828 /*
6829 * Register ourselves as PCI hotplug module
6830 */
6831 rval = pci_register_driver(&megasas_pci_driver);
6832
6833 if (rval) {
6834 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
6835 goto err_pcidrv;
6836 }
6837
6838 rval = driver_create_file(&megasas_pci_driver.driver,
6839 &driver_attr_version);
6840 if (rval)
6841 goto err_dcf_attr_ver;
6842
6843 rval = driver_create_file(&megasas_pci_driver.driver,
6844 &driver_attr_support_poll_for_event);
6845 if (rval)
6846 goto err_dcf_support_poll_for_event;
6847
6848 rval = driver_create_file(&megasas_pci_driver.driver,
6849 &driver_attr_dbg_lvl);
6850 if (rval)
6851 goto err_dcf_dbg_lvl;
6852 rval = driver_create_file(&megasas_pci_driver.driver,
6853 &driver_attr_support_device_change);
6854 if (rval)
6855 goto err_dcf_support_device_change;
6856
6857 return rval;
6858
6859 err_dcf_support_device_change:
6860 driver_remove_file(&megasas_pci_driver.driver,
6861 &driver_attr_dbg_lvl);
6862 err_dcf_dbg_lvl:
6863 driver_remove_file(&megasas_pci_driver.driver,
6864 &driver_attr_support_poll_for_event);
6865 err_dcf_support_poll_for_event:
6866 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6867 err_dcf_attr_ver:
6868 pci_unregister_driver(&megasas_pci_driver);
6869 err_pcidrv:
6870 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6871 return rval;
6872 }
6873
6874 /**
6875 * megasas_exit - Driver unload entry point
6876 */
6877 static void __exit megasas_exit(void)
6878 {
6879 driver_remove_file(&megasas_pci_driver.driver,
6880 &driver_attr_dbg_lvl);
6881 driver_remove_file(&megasas_pci_driver.driver,
6882 &driver_attr_support_poll_for_event);
6883 driver_remove_file(&megasas_pci_driver.driver,
6884 &driver_attr_support_device_change);
6885 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6886
6887 pci_unregister_driver(&megasas_pci_driver);
6888 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6889 }
6890
6891 module_init(megasas_init);
6892 module_exit(megasas_exit);
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