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[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) 2003-2012 LSI Corporation.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 * FILE: megaraid_sas_base.c
21 * Version : 06.805.06.00-rc1
22 *
23 * Authors: LSI Corporation
24 * Sreenivas Bagalkote
25 * Sumant Patro
26 * Bo Yang
27 * Adam Radford <linuxraid@lsi.com>
28 *
29 * Send feedback to: <megaraidlinux@lsi.com>
30 *
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
32 * ATTN: Linuxraid
33 */
34
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/pci.h>
38 #include <linux/list.h>
39 #include <linux/moduleparam.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/interrupt.h>
43 #include <linux/delay.h>
44 #include <linux/uio.h>
45 #include <linux/slab.h>
46 #include <asm/uaccess.h>
47 #include <linux/fs.h>
48 #include <linux/compat.h>
49 #include <linux/blkdev.h>
50 #include <linux/mutex.h>
51 #include <linux/poll.h>
52
53 #include <scsi/scsi.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_tcq.h>
58 #include "megaraid_sas_fusion.h"
59 #include "megaraid_sas.h"
60
61 /*
62 * Number of sectors per IO command
63 * Will be set in megasas_init_mfi if user does not provide
64 */
65 static unsigned int max_sectors;
66 module_param_named(max_sectors, max_sectors, int, 0);
67 MODULE_PARM_DESC(max_sectors,
68 "Maximum number of sectors per IO command");
69
70 static int msix_disable;
71 module_param(msix_disable, int, S_IRUGO);
72 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
73
74 static unsigned int msix_vectors;
75 module_param(msix_vectors, int, S_IRUGO);
76 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
77
78 static int allow_vf_ioctls;
79 module_param(allow_vf_ioctls, int, S_IRUGO);
80 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
81
82 static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
83 module_param(throttlequeuedepth, int, S_IRUGO);
84 MODULE_PARM_DESC(throttlequeuedepth,
85 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
86
87 int resetwaittime = MEGASAS_RESET_WAIT_TIME;
88 module_param(resetwaittime, int, S_IRUGO);
89 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
90 "before resetting adapter. Default: 180");
91
92 int smp_affinity_enable = 1;
93 module_param(smp_affinity_enable, int, S_IRUGO);
94 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
95
96 MODULE_LICENSE("GPL");
97 MODULE_VERSION(MEGASAS_VERSION);
98 MODULE_AUTHOR("megaraidlinux@lsi.com");
99 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
100
101 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
102 static int megasas_get_pd_list(struct megasas_instance *instance);
103 static int megasas_ld_list_query(struct megasas_instance *instance,
104 u8 query_type);
105 static int megasas_issue_init_mfi(struct megasas_instance *instance);
106 static int megasas_register_aen(struct megasas_instance *instance,
107 u32 seq_num, u32 class_locale_word);
108 /*
109 * PCI ID table for all supported controllers
110 */
111 static struct pci_device_id megasas_pci_table[] = {
112
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
114 /* xscale IOP */
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
116 /* ppc IOP */
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
118 /* ppc IOP */
119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
120 /* gen2*/
121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
122 /* gen2*/
123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
124 /* skinny*/
125 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
126 /* skinny*/
127 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
128 /* xscale IOP, vega */
129 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
130 /* xscale IOP */
131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
132 /* Fusion */
133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
134 /* Plasma */
135 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
136 /* Invader */
137 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
138 /* Fury */
139 {}
140 };
141
142 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
143
144 static int megasas_mgmt_majorno;
145 struct megasas_mgmt_info megasas_mgmt_info;
146 static struct fasync_struct *megasas_async_queue;
147 static DEFINE_MUTEX(megasas_async_queue_mutex);
148
149 static int megasas_poll_wait_aen;
150 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
151 static u32 support_poll_for_event;
152 u32 megasas_dbg_lvl;
153 static u32 support_device_change;
154
155 /* define lock for aen poll */
156 spinlock_t poll_aen_lock;
157
158 void
159 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
160 u8 alt_status);
161 static u32
162 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
163 static int
164 megasas_adp_reset_gen2(struct megasas_instance *instance,
165 struct megasas_register_set __iomem *reg_set);
166 static irqreturn_t megasas_isr(int irq, void *devp);
167 static u32
168 megasas_init_adapter_mfi(struct megasas_instance *instance);
169 u32
170 megasas_build_and_issue_cmd(struct megasas_instance *instance,
171 struct scsi_cmnd *scmd);
172 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
173 void
174 megasas_release_fusion(struct megasas_instance *instance);
175 int
176 megasas_ioc_init_fusion(struct megasas_instance *instance);
177 void
178 megasas_free_cmds_fusion(struct megasas_instance *instance);
179 u8
180 megasas_get_map_info(struct megasas_instance *instance);
181 int
182 megasas_sync_map_info(struct megasas_instance *instance);
183 int
184 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
185 int seconds);
186 void megasas_reset_reply_desc(struct megasas_instance *instance);
187 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
188 void megasas_fusion_ocr_wq(struct work_struct *work);
189 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
190 int initial);
191 int megasas_check_mpio_paths(struct megasas_instance *instance,
192 struct scsi_cmnd *scmd);
193
194 void
195 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
196 {
197 instance->instancet->fire_cmd(instance,
198 cmd->frame_phys_addr, 0, instance->reg_set);
199 }
200
201 /**
202 * megasas_get_cmd - Get a command from the free pool
203 * @instance: Adapter soft state
204 *
205 * Returns a free command from the pool
206 */
207 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
208 *instance)
209 {
210 unsigned long flags;
211 struct megasas_cmd *cmd = NULL;
212
213 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
214
215 if (!list_empty(&instance->cmd_pool)) {
216 cmd = list_entry((&instance->cmd_pool)->next,
217 struct megasas_cmd, list);
218 list_del_init(&cmd->list);
219 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED);
220 } else {
221 printk(KERN_ERR "megasas: Command pool empty!\n");
222 }
223
224 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
225 return cmd;
226 }
227
228 /**
229 * __megasas_return_cmd - Return a cmd to free command pool
230 * @instance: Adapter soft state
231 * @cmd: Command packet to be returned to free command pool
232 */
233 inline void
234 __megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
235 {
236 /*
237 * Don't go ahead and free the MFI frame, if corresponding
238 * MPT frame is not freed(valid for only fusion adapters).
239 * In case of MFI adapters, anyways for any allocated MFI
240 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED
241 */
242 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED)
243 return;
244
245 cmd->scmd = NULL;
246 cmd->frame_count = 0;
247 cmd->is_wait_event = 0;
248 cmd->mpt_pthr_cmd_blocked = NULL;
249
250 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
251 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
252 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
253 (reset_devices))
254 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
255
256 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
257 list_add(&cmd->list, (&instance->cmd_pool)->next);
258 }
259
260 /**
261 * megasas_return_cmd - Return a cmd to free command pool
262 * @instance: Adapter soft state
263 * @cmd: Command packet to be returned to free command pool
264 */
265 inline void
266 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
267 {
268 unsigned long flags;
269
270 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
271 __megasas_return_cmd(instance, cmd);
272 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
273 }
274
275
276 /**
277 * The following functions are defined for xscale
278 * (deviceid : 1064R, PERC5) controllers
279 */
280
281 /**
282 * megasas_enable_intr_xscale - Enables interrupts
283 * @regs: MFI register set
284 */
285 static inline void
286 megasas_enable_intr_xscale(struct megasas_instance *instance)
287 {
288 struct megasas_register_set __iomem *regs;
289 regs = instance->reg_set;
290 writel(0, &(regs)->outbound_intr_mask);
291
292 /* Dummy readl to force pci flush */
293 readl(&regs->outbound_intr_mask);
294 }
295
296 /**
297 * megasas_disable_intr_xscale -Disables interrupt
298 * @regs: MFI register set
299 */
300 static inline void
301 megasas_disable_intr_xscale(struct megasas_instance *instance)
302 {
303 struct megasas_register_set __iomem *regs;
304 u32 mask = 0x1f;
305 regs = instance->reg_set;
306 writel(mask, &regs->outbound_intr_mask);
307 /* Dummy readl to force pci flush */
308 readl(&regs->outbound_intr_mask);
309 }
310
311 /**
312 * megasas_read_fw_status_reg_xscale - returns the current FW status value
313 * @regs: MFI register set
314 */
315 static u32
316 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
317 {
318 return readl(&(regs)->outbound_msg_0);
319 }
320 /**
321 * megasas_clear_interrupt_xscale - Check & clear interrupt
322 * @regs: MFI register set
323 */
324 static int
325 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
326 {
327 u32 status;
328 u32 mfiStatus = 0;
329 /*
330 * Check if it is our interrupt
331 */
332 status = readl(&regs->outbound_intr_status);
333
334 if (status & MFI_OB_INTR_STATUS_MASK)
335 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
336 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
337 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
338
339 /*
340 * Clear the interrupt by writing back the same value
341 */
342 if (mfiStatus)
343 writel(status, &regs->outbound_intr_status);
344
345 /* Dummy readl to force pci flush */
346 readl(&regs->outbound_intr_status);
347
348 return mfiStatus;
349 }
350
351 /**
352 * megasas_fire_cmd_xscale - Sends command to the FW
353 * @frame_phys_addr : Physical address of cmd
354 * @frame_count : Number of frames for the command
355 * @regs : MFI register set
356 */
357 static inline void
358 megasas_fire_cmd_xscale(struct megasas_instance *instance,
359 dma_addr_t frame_phys_addr,
360 u32 frame_count,
361 struct megasas_register_set __iomem *regs)
362 {
363 unsigned long flags;
364 spin_lock_irqsave(&instance->hba_lock, flags);
365 writel((frame_phys_addr >> 3)|(frame_count),
366 &(regs)->inbound_queue_port);
367 spin_unlock_irqrestore(&instance->hba_lock, flags);
368 }
369
370 /**
371 * megasas_adp_reset_xscale - For controller reset
372 * @regs: MFI register set
373 */
374 static int
375 megasas_adp_reset_xscale(struct megasas_instance *instance,
376 struct megasas_register_set __iomem *regs)
377 {
378 u32 i;
379 u32 pcidata;
380 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
381
382 for (i = 0; i < 3; i++)
383 msleep(1000); /* sleep for 3 secs */
384 pcidata = 0;
385 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
386 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
387 if (pcidata & 0x2) {
388 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
389 pcidata &= ~0x2;
390 pci_write_config_dword(instance->pdev,
391 MFI_1068_PCSR_OFFSET, pcidata);
392
393 for (i = 0; i < 2; i++)
394 msleep(1000); /* need to wait 2 secs again */
395
396 pcidata = 0;
397 pci_read_config_dword(instance->pdev,
398 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
399 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
400 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
401 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
402 pcidata = 0;
403 pci_write_config_dword(instance->pdev,
404 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
405 }
406 }
407 return 0;
408 }
409
410 /**
411 * megasas_check_reset_xscale - For controller reset check
412 * @regs: MFI register set
413 */
414 static int
415 megasas_check_reset_xscale(struct megasas_instance *instance,
416 struct megasas_register_set __iomem *regs)
417 {
418
419 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
420 (le32_to_cpu(*instance->consumer) ==
421 MEGASAS_ADPRESET_INPROG_SIGN))
422 return 1;
423 return 0;
424 }
425
426 static struct megasas_instance_template megasas_instance_template_xscale = {
427
428 .fire_cmd = megasas_fire_cmd_xscale,
429 .enable_intr = megasas_enable_intr_xscale,
430 .disable_intr = megasas_disable_intr_xscale,
431 .clear_intr = megasas_clear_intr_xscale,
432 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
433 .adp_reset = megasas_adp_reset_xscale,
434 .check_reset = megasas_check_reset_xscale,
435 .service_isr = megasas_isr,
436 .tasklet = megasas_complete_cmd_dpc,
437 .init_adapter = megasas_init_adapter_mfi,
438 .build_and_issue_cmd = megasas_build_and_issue_cmd,
439 .issue_dcmd = megasas_issue_dcmd,
440 };
441
442 /**
443 * This is the end of set of functions & definitions specific
444 * to xscale (deviceid : 1064R, PERC5) controllers
445 */
446
447 /**
448 * The following functions are defined for ppc (deviceid : 0x60)
449 * controllers
450 */
451
452 /**
453 * megasas_enable_intr_ppc - Enables interrupts
454 * @regs: MFI register set
455 */
456 static inline void
457 megasas_enable_intr_ppc(struct megasas_instance *instance)
458 {
459 struct megasas_register_set __iomem *regs;
460 regs = instance->reg_set;
461 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
462
463 writel(~0x80000000, &(regs)->outbound_intr_mask);
464
465 /* Dummy readl to force pci flush */
466 readl(&regs->outbound_intr_mask);
467 }
468
469 /**
470 * megasas_disable_intr_ppc - Disable interrupt
471 * @regs: MFI register set
472 */
473 static inline void
474 megasas_disable_intr_ppc(struct megasas_instance *instance)
475 {
476 struct megasas_register_set __iomem *regs;
477 u32 mask = 0xFFFFFFFF;
478 regs = instance->reg_set;
479 writel(mask, &regs->outbound_intr_mask);
480 /* Dummy readl to force pci flush */
481 readl(&regs->outbound_intr_mask);
482 }
483
484 /**
485 * megasas_read_fw_status_reg_ppc - returns the current FW status value
486 * @regs: MFI register set
487 */
488 static u32
489 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
490 {
491 return readl(&(regs)->outbound_scratch_pad);
492 }
493
494 /**
495 * megasas_clear_interrupt_ppc - Check & clear interrupt
496 * @regs: MFI register set
497 */
498 static int
499 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
500 {
501 u32 status, mfiStatus = 0;
502
503 /*
504 * Check if it is our interrupt
505 */
506 status = readl(&regs->outbound_intr_status);
507
508 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
509 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
510
511 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
512 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
513
514 /*
515 * Clear the interrupt by writing back the same value
516 */
517 writel(status, &regs->outbound_doorbell_clear);
518
519 /* Dummy readl to force pci flush */
520 readl(&regs->outbound_doorbell_clear);
521
522 return mfiStatus;
523 }
524
525 /**
526 * megasas_fire_cmd_ppc - Sends command to the FW
527 * @frame_phys_addr : Physical address of cmd
528 * @frame_count : Number of frames for the command
529 * @regs : MFI register set
530 */
531 static inline void
532 megasas_fire_cmd_ppc(struct megasas_instance *instance,
533 dma_addr_t frame_phys_addr,
534 u32 frame_count,
535 struct megasas_register_set __iomem *regs)
536 {
537 unsigned long flags;
538 spin_lock_irqsave(&instance->hba_lock, flags);
539 writel((frame_phys_addr | (frame_count<<1))|1,
540 &(regs)->inbound_queue_port);
541 spin_unlock_irqrestore(&instance->hba_lock, flags);
542 }
543
544 /**
545 * megasas_check_reset_ppc - For controller reset check
546 * @regs: MFI register set
547 */
548 static int
549 megasas_check_reset_ppc(struct megasas_instance *instance,
550 struct megasas_register_set __iomem *regs)
551 {
552 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
553 return 1;
554
555 return 0;
556 }
557
558 static struct megasas_instance_template megasas_instance_template_ppc = {
559
560 .fire_cmd = megasas_fire_cmd_ppc,
561 .enable_intr = megasas_enable_intr_ppc,
562 .disable_intr = megasas_disable_intr_ppc,
563 .clear_intr = megasas_clear_intr_ppc,
564 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
565 .adp_reset = megasas_adp_reset_xscale,
566 .check_reset = megasas_check_reset_ppc,
567 .service_isr = megasas_isr,
568 .tasklet = megasas_complete_cmd_dpc,
569 .init_adapter = megasas_init_adapter_mfi,
570 .build_and_issue_cmd = megasas_build_and_issue_cmd,
571 .issue_dcmd = megasas_issue_dcmd,
572 };
573
574 /**
575 * megasas_enable_intr_skinny - Enables interrupts
576 * @regs: MFI register set
577 */
578 static inline void
579 megasas_enable_intr_skinny(struct megasas_instance *instance)
580 {
581 struct megasas_register_set __iomem *regs;
582 regs = instance->reg_set;
583 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
584
585 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
586
587 /* Dummy readl to force pci flush */
588 readl(&regs->outbound_intr_mask);
589 }
590
591 /**
592 * megasas_disable_intr_skinny - Disables interrupt
593 * @regs: MFI register set
594 */
595 static inline void
596 megasas_disable_intr_skinny(struct megasas_instance *instance)
597 {
598 struct megasas_register_set __iomem *regs;
599 u32 mask = 0xFFFFFFFF;
600 regs = instance->reg_set;
601 writel(mask, &regs->outbound_intr_mask);
602 /* Dummy readl to force pci flush */
603 readl(&regs->outbound_intr_mask);
604 }
605
606 /**
607 * megasas_read_fw_status_reg_skinny - returns the current FW status value
608 * @regs: MFI register set
609 */
610 static u32
611 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
612 {
613 return readl(&(regs)->outbound_scratch_pad);
614 }
615
616 /**
617 * megasas_clear_interrupt_skinny - Check & clear interrupt
618 * @regs: MFI register set
619 */
620 static int
621 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
622 {
623 u32 status;
624 u32 mfiStatus = 0;
625
626 /*
627 * Check if it is our interrupt
628 */
629 status = readl(&regs->outbound_intr_status);
630
631 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
632 return 0;
633 }
634
635 /*
636 * Check if it is our interrupt
637 */
638 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
639 MFI_STATE_FAULT) {
640 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
641 } else
642 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
643
644 /*
645 * Clear the interrupt by writing back the same value
646 */
647 writel(status, &regs->outbound_intr_status);
648
649 /*
650 * dummy read to flush PCI
651 */
652 readl(&regs->outbound_intr_status);
653
654 return mfiStatus;
655 }
656
657 /**
658 * megasas_fire_cmd_skinny - Sends command to the FW
659 * @frame_phys_addr : Physical address of cmd
660 * @frame_count : Number of frames for the command
661 * @regs : MFI register set
662 */
663 static inline void
664 megasas_fire_cmd_skinny(struct megasas_instance *instance,
665 dma_addr_t frame_phys_addr,
666 u32 frame_count,
667 struct megasas_register_set __iomem *regs)
668 {
669 unsigned long flags;
670 spin_lock_irqsave(&instance->hba_lock, flags);
671 writel(upper_32_bits(frame_phys_addr),
672 &(regs)->inbound_high_queue_port);
673 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
674 &(regs)->inbound_low_queue_port);
675 spin_unlock_irqrestore(&instance->hba_lock, flags);
676 }
677
678 /**
679 * megasas_check_reset_skinny - For controller reset check
680 * @regs: MFI register set
681 */
682 static int
683 megasas_check_reset_skinny(struct megasas_instance *instance,
684 struct megasas_register_set __iomem *regs)
685 {
686 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
687 return 1;
688
689 return 0;
690 }
691
692 static struct megasas_instance_template megasas_instance_template_skinny = {
693
694 .fire_cmd = megasas_fire_cmd_skinny,
695 .enable_intr = megasas_enable_intr_skinny,
696 .disable_intr = megasas_disable_intr_skinny,
697 .clear_intr = megasas_clear_intr_skinny,
698 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
699 .adp_reset = megasas_adp_reset_gen2,
700 .check_reset = megasas_check_reset_skinny,
701 .service_isr = megasas_isr,
702 .tasklet = megasas_complete_cmd_dpc,
703 .init_adapter = megasas_init_adapter_mfi,
704 .build_and_issue_cmd = megasas_build_and_issue_cmd,
705 .issue_dcmd = megasas_issue_dcmd,
706 };
707
708
709 /**
710 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
711 * controllers
712 */
713
714 /**
715 * megasas_enable_intr_gen2 - Enables interrupts
716 * @regs: MFI register set
717 */
718 static inline void
719 megasas_enable_intr_gen2(struct megasas_instance *instance)
720 {
721 struct megasas_register_set __iomem *regs;
722 regs = instance->reg_set;
723 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
724
725 /* write ~0x00000005 (4 & 1) to the intr mask*/
726 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
727
728 /* Dummy readl to force pci flush */
729 readl(&regs->outbound_intr_mask);
730 }
731
732 /**
733 * megasas_disable_intr_gen2 - Disables interrupt
734 * @regs: MFI register set
735 */
736 static inline void
737 megasas_disable_intr_gen2(struct megasas_instance *instance)
738 {
739 struct megasas_register_set __iomem *regs;
740 u32 mask = 0xFFFFFFFF;
741 regs = instance->reg_set;
742 writel(mask, &regs->outbound_intr_mask);
743 /* Dummy readl to force pci flush */
744 readl(&regs->outbound_intr_mask);
745 }
746
747 /**
748 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
749 * @regs: MFI register set
750 */
751 static u32
752 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
753 {
754 return readl(&(regs)->outbound_scratch_pad);
755 }
756
757 /**
758 * megasas_clear_interrupt_gen2 - Check & clear interrupt
759 * @regs: MFI register set
760 */
761 static int
762 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
763 {
764 u32 status;
765 u32 mfiStatus = 0;
766 /*
767 * Check if it is our interrupt
768 */
769 status = readl(&regs->outbound_intr_status);
770
771 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
772 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
773 }
774 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
775 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
776 }
777
778 /*
779 * Clear the interrupt by writing back the same value
780 */
781 if (mfiStatus)
782 writel(status, &regs->outbound_doorbell_clear);
783
784 /* Dummy readl to force pci flush */
785 readl(&regs->outbound_intr_status);
786
787 return mfiStatus;
788 }
789 /**
790 * megasas_fire_cmd_gen2 - Sends command to the FW
791 * @frame_phys_addr : Physical address of cmd
792 * @frame_count : Number of frames for the command
793 * @regs : MFI register set
794 */
795 static inline void
796 megasas_fire_cmd_gen2(struct megasas_instance *instance,
797 dma_addr_t frame_phys_addr,
798 u32 frame_count,
799 struct megasas_register_set __iomem *regs)
800 {
801 unsigned long flags;
802 spin_lock_irqsave(&instance->hba_lock, flags);
803 writel((frame_phys_addr | (frame_count<<1))|1,
804 &(regs)->inbound_queue_port);
805 spin_unlock_irqrestore(&instance->hba_lock, flags);
806 }
807
808 /**
809 * megasas_adp_reset_gen2 - For controller reset
810 * @regs: MFI register set
811 */
812 static int
813 megasas_adp_reset_gen2(struct megasas_instance *instance,
814 struct megasas_register_set __iomem *reg_set)
815 {
816 u32 retry = 0 ;
817 u32 HostDiag;
818 u32 *seq_offset = &reg_set->seq_offset;
819 u32 *hostdiag_offset = &reg_set->host_diag;
820
821 if (instance->instancet == &megasas_instance_template_skinny) {
822 seq_offset = &reg_set->fusion_seq_offset;
823 hostdiag_offset = &reg_set->fusion_host_diag;
824 }
825
826 writel(0, seq_offset);
827 writel(4, seq_offset);
828 writel(0xb, seq_offset);
829 writel(2, seq_offset);
830 writel(7, seq_offset);
831 writel(0xd, seq_offset);
832
833 msleep(1000);
834
835 HostDiag = (u32)readl(hostdiag_offset);
836
837 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
838 msleep(100);
839 HostDiag = (u32)readl(hostdiag_offset);
840 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
841 retry, HostDiag);
842
843 if (retry++ >= 100)
844 return 1;
845
846 }
847
848 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
849
850 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
851
852 ssleep(10);
853
854 HostDiag = (u32)readl(hostdiag_offset);
855 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
856 msleep(100);
857 HostDiag = (u32)readl(hostdiag_offset);
858 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
859 retry, HostDiag);
860
861 if (retry++ >= 1000)
862 return 1;
863
864 }
865 return 0;
866 }
867
868 /**
869 * megasas_check_reset_gen2 - For controller reset check
870 * @regs: MFI register set
871 */
872 static int
873 megasas_check_reset_gen2(struct megasas_instance *instance,
874 struct megasas_register_set __iomem *regs)
875 {
876 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
877 return 1;
878 }
879
880 return 0;
881 }
882
883 static struct megasas_instance_template megasas_instance_template_gen2 = {
884
885 .fire_cmd = megasas_fire_cmd_gen2,
886 .enable_intr = megasas_enable_intr_gen2,
887 .disable_intr = megasas_disable_intr_gen2,
888 .clear_intr = megasas_clear_intr_gen2,
889 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
890 .adp_reset = megasas_adp_reset_gen2,
891 .check_reset = megasas_check_reset_gen2,
892 .service_isr = megasas_isr,
893 .tasklet = megasas_complete_cmd_dpc,
894 .init_adapter = megasas_init_adapter_mfi,
895 .build_and_issue_cmd = megasas_build_and_issue_cmd,
896 .issue_dcmd = megasas_issue_dcmd,
897 };
898
899 /**
900 * This is the end of set of functions & definitions
901 * specific to gen2 (deviceid : 0x78, 0x79) controllers
902 */
903
904 /*
905 * Template added for TB (Fusion)
906 */
907 extern struct megasas_instance_template megasas_instance_template_fusion;
908
909 /**
910 * megasas_issue_polled - Issues a polling command
911 * @instance: Adapter soft state
912 * @cmd: Command packet to be issued
913 *
914 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
915 */
916 int
917 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
918 {
919 int seconds;
920
921 struct megasas_header *frame_hdr = &cmd->frame->hdr;
922
923 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
924 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
925
926 /*
927 * Issue the frame using inbound queue port
928 */
929 instance->instancet->issue_dcmd(instance, cmd);
930
931 /*
932 * Wait for cmd_status to change
933 */
934 if (instance->requestorId)
935 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
936 else
937 seconds = MFI_POLL_TIMEOUT_SECS;
938 return wait_and_poll(instance, cmd, seconds);
939 }
940
941 /**
942 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
943 * @instance: Adapter soft state
944 * @cmd: Command to be issued
945 * @timeout: Timeout in seconds
946 *
947 * This function waits on an event for the command to be returned from ISR.
948 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
949 * Used to issue ioctl commands.
950 */
951 int
952 megasas_issue_blocked_cmd(struct megasas_instance *instance,
953 struct megasas_cmd *cmd, int timeout)
954 {
955 int ret = 0;
956 cmd->cmd_status = ENODATA;
957
958 cmd->is_wait_event = 1;
959 instance->instancet->issue_dcmd(instance, cmd);
960 if (timeout) {
961 ret = wait_event_timeout(instance->int_cmd_wait_q,
962 cmd->cmd_status != ENODATA, timeout * HZ);
963 if (!ret)
964 return 1;
965 } else
966 wait_event(instance->int_cmd_wait_q,
967 cmd->cmd_status != ENODATA);
968
969 return 0;
970 }
971
972 /**
973 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
974 * @instance: Adapter soft state
975 * @cmd_to_abort: Previously issued cmd to be aborted
976 * @timeout: Timeout in seconds
977 *
978 * MFI firmware can abort previously issued AEN comamnd (automatic event
979 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
980 * cmd and waits for return status.
981 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
982 */
983 static int
984 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
985 struct megasas_cmd *cmd_to_abort, int timeout)
986 {
987 struct megasas_cmd *cmd;
988 struct megasas_abort_frame *abort_fr;
989 int ret = 0;
990
991 cmd = megasas_get_cmd(instance);
992
993 if (!cmd)
994 return -1;
995
996 abort_fr = &cmd->frame->abort;
997
998 /*
999 * Prepare and issue the abort frame
1000 */
1001 abort_fr->cmd = MFI_CMD_ABORT;
1002 abort_fr->cmd_status = 0xFF;
1003 abort_fr->flags = cpu_to_le16(0);
1004 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1005 abort_fr->abort_mfi_phys_addr_lo =
1006 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1007 abort_fr->abort_mfi_phys_addr_hi =
1008 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1009
1010 cmd->sync_cmd = 1;
1011 cmd->cmd_status = 0xFF;
1012
1013 instance->instancet->issue_dcmd(instance, cmd);
1014
1015 if (timeout) {
1016 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1017 cmd->cmd_status != ENODATA, timeout * HZ);
1018 if (!ret) {
1019 dev_err(&instance->pdev->dev, "Command timedout"
1020 "from %s\n", __func__);
1021 return 1;
1022 }
1023 } else
1024 wait_event(instance->abort_cmd_wait_q,
1025 cmd->cmd_status != ENODATA);
1026
1027 cmd->sync_cmd = 0;
1028
1029 megasas_return_cmd(instance, cmd);
1030 return 0;
1031 }
1032
1033 /**
1034 * megasas_make_sgl32 - Prepares 32-bit SGL
1035 * @instance: Adapter soft state
1036 * @scp: SCSI command from the mid-layer
1037 * @mfi_sgl: SGL to be filled in
1038 *
1039 * If successful, this function returns the number of SG elements. Otherwise,
1040 * it returnes -1.
1041 */
1042 static int
1043 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1044 union megasas_sgl *mfi_sgl)
1045 {
1046 int i;
1047 int sge_count;
1048 struct scatterlist *os_sgl;
1049
1050 sge_count = scsi_dma_map(scp);
1051 BUG_ON(sge_count < 0);
1052
1053 if (sge_count) {
1054 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1055 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1056 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1057 }
1058 }
1059 return sge_count;
1060 }
1061
1062 /**
1063 * megasas_make_sgl64 - Prepares 64-bit SGL
1064 * @instance: Adapter soft state
1065 * @scp: SCSI command from the mid-layer
1066 * @mfi_sgl: SGL to be filled in
1067 *
1068 * If successful, this function returns the number of SG elements. Otherwise,
1069 * it returnes -1.
1070 */
1071 static int
1072 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1073 union megasas_sgl *mfi_sgl)
1074 {
1075 int i;
1076 int sge_count;
1077 struct scatterlist *os_sgl;
1078
1079 sge_count = scsi_dma_map(scp);
1080 BUG_ON(sge_count < 0);
1081
1082 if (sge_count) {
1083 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1084 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1085 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1086 }
1087 }
1088 return sge_count;
1089 }
1090
1091 /**
1092 * megasas_make_sgl_skinny - Prepares IEEE SGL
1093 * @instance: Adapter soft state
1094 * @scp: SCSI command from the mid-layer
1095 * @mfi_sgl: SGL to be filled in
1096 *
1097 * If successful, this function returns the number of SG elements. Otherwise,
1098 * it returnes -1.
1099 */
1100 static int
1101 megasas_make_sgl_skinny(struct megasas_instance *instance,
1102 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1103 {
1104 int i;
1105 int sge_count;
1106 struct scatterlist *os_sgl;
1107
1108 sge_count = scsi_dma_map(scp);
1109
1110 if (sge_count) {
1111 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1112 mfi_sgl->sge_skinny[i].length =
1113 cpu_to_le32(sg_dma_len(os_sgl));
1114 mfi_sgl->sge_skinny[i].phys_addr =
1115 cpu_to_le64(sg_dma_address(os_sgl));
1116 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1117 }
1118 }
1119 return sge_count;
1120 }
1121
1122 /**
1123 * megasas_get_frame_count - Computes the number of frames
1124 * @frame_type : type of frame- io or pthru frame
1125 * @sge_count : number of sg elements
1126 *
1127 * Returns the number of frames required for numnber of sge's (sge_count)
1128 */
1129
1130 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1131 u8 sge_count, u8 frame_type)
1132 {
1133 int num_cnt;
1134 int sge_bytes;
1135 u32 sge_sz;
1136 u32 frame_count=0;
1137
1138 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1139 sizeof(struct megasas_sge32);
1140
1141 if (instance->flag_ieee) {
1142 sge_sz = sizeof(struct megasas_sge_skinny);
1143 }
1144
1145 /*
1146 * Main frame can contain 2 SGEs for 64-bit SGLs and
1147 * 3 SGEs for 32-bit SGLs for ldio &
1148 * 1 SGEs for 64-bit SGLs and
1149 * 2 SGEs for 32-bit SGLs for pthru frame
1150 */
1151 if (unlikely(frame_type == PTHRU_FRAME)) {
1152 if (instance->flag_ieee == 1) {
1153 num_cnt = sge_count - 1;
1154 } else if (IS_DMA64)
1155 num_cnt = sge_count - 1;
1156 else
1157 num_cnt = sge_count - 2;
1158 } else {
1159 if (instance->flag_ieee == 1) {
1160 num_cnt = sge_count - 1;
1161 } else if (IS_DMA64)
1162 num_cnt = sge_count - 2;
1163 else
1164 num_cnt = sge_count - 3;
1165 }
1166
1167 if(num_cnt>0){
1168 sge_bytes = sge_sz * num_cnt;
1169
1170 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1171 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1172 }
1173 /* Main frame */
1174 frame_count +=1;
1175
1176 if (frame_count > 7)
1177 frame_count = 8;
1178 return frame_count;
1179 }
1180
1181 /**
1182 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1183 * @instance: Adapter soft state
1184 * @scp: SCSI command
1185 * @cmd: Command to be prepared in
1186 *
1187 * This function prepares CDB commands. These are typcially pass-through
1188 * commands to the devices.
1189 */
1190 static int
1191 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1192 struct megasas_cmd *cmd)
1193 {
1194 u32 is_logical;
1195 u32 device_id;
1196 u16 flags = 0;
1197 struct megasas_pthru_frame *pthru;
1198
1199 is_logical = MEGASAS_IS_LOGICAL(scp);
1200 device_id = MEGASAS_DEV_INDEX(instance, scp);
1201 pthru = (struct megasas_pthru_frame *)cmd->frame;
1202
1203 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1204 flags = MFI_FRAME_DIR_WRITE;
1205 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1206 flags = MFI_FRAME_DIR_READ;
1207 else if (scp->sc_data_direction == PCI_DMA_NONE)
1208 flags = MFI_FRAME_DIR_NONE;
1209
1210 if (instance->flag_ieee == 1) {
1211 flags |= MFI_FRAME_IEEE;
1212 }
1213
1214 /*
1215 * Prepare the DCDB frame
1216 */
1217 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1218 pthru->cmd_status = 0x0;
1219 pthru->scsi_status = 0x0;
1220 pthru->target_id = device_id;
1221 pthru->lun = scp->device->lun;
1222 pthru->cdb_len = scp->cmd_len;
1223 pthru->timeout = 0;
1224 pthru->pad_0 = 0;
1225 pthru->flags = cpu_to_le16(flags);
1226 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1227
1228 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1229
1230 /*
1231 * If the command is for the tape device, set the
1232 * pthru timeout to the os layer timeout value.
1233 */
1234 if (scp->device->type == TYPE_TAPE) {
1235 if ((scp->request->timeout / HZ) > 0xFFFF)
1236 pthru->timeout = 0xFFFF;
1237 else
1238 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1239 }
1240
1241 /*
1242 * Construct SGL
1243 */
1244 if (instance->flag_ieee == 1) {
1245 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1246 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1247 &pthru->sgl);
1248 } else if (IS_DMA64) {
1249 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1250 pthru->sge_count = megasas_make_sgl64(instance, scp,
1251 &pthru->sgl);
1252 } else
1253 pthru->sge_count = megasas_make_sgl32(instance, scp,
1254 &pthru->sgl);
1255
1256 if (pthru->sge_count > instance->max_num_sge) {
1257 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1258 pthru->sge_count);
1259 return 0;
1260 }
1261
1262 /*
1263 * Sense info specific
1264 */
1265 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1266 pthru->sense_buf_phys_addr_hi =
1267 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1268 pthru->sense_buf_phys_addr_lo =
1269 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1270
1271 /*
1272 * Compute the total number of frames this command consumes. FW uses
1273 * this number to pull sufficient number of frames from host memory.
1274 */
1275 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1276 PTHRU_FRAME);
1277
1278 return cmd->frame_count;
1279 }
1280
1281 /**
1282 * megasas_build_ldio - Prepares IOs to logical devices
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command
1285 * @cmd: Command to be prepared
1286 *
1287 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1288 */
1289 static int
1290 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1291 struct megasas_cmd *cmd)
1292 {
1293 u32 device_id;
1294 u8 sc = scp->cmnd[0];
1295 u16 flags = 0;
1296 struct megasas_io_frame *ldio;
1297
1298 device_id = MEGASAS_DEV_INDEX(instance, scp);
1299 ldio = (struct megasas_io_frame *)cmd->frame;
1300
1301 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1302 flags = MFI_FRAME_DIR_WRITE;
1303 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1304 flags = MFI_FRAME_DIR_READ;
1305
1306 if (instance->flag_ieee == 1) {
1307 flags |= MFI_FRAME_IEEE;
1308 }
1309
1310 /*
1311 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1312 */
1313 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1314 ldio->cmd_status = 0x0;
1315 ldio->scsi_status = 0x0;
1316 ldio->target_id = device_id;
1317 ldio->timeout = 0;
1318 ldio->reserved_0 = 0;
1319 ldio->pad_0 = 0;
1320 ldio->flags = cpu_to_le16(flags);
1321 ldio->start_lba_hi = 0;
1322 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1323
1324 /*
1325 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1326 */
1327 if (scp->cmd_len == 6) {
1328 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1330 ((u32) scp->cmnd[2] << 8) |
1331 (u32) scp->cmnd[3]);
1332
1333 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1334 }
1335
1336 /*
1337 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1338 */
1339 else if (scp->cmd_len == 10) {
1340 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1341 ((u32) scp->cmnd[7] << 8));
1342 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1343 ((u32) scp->cmnd[3] << 16) |
1344 ((u32) scp->cmnd[4] << 8) |
1345 (u32) scp->cmnd[5]);
1346 }
1347
1348 /*
1349 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1350 */
1351 else if (scp->cmd_len == 12) {
1352 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1353 ((u32) scp->cmnd[7] << 16) |
1354 ((u32) scp->cmnd[8] << 8) |
1355 (u32) scp->cmnd[9]);
1356
1357 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1358 ((u32) scp->cmnd[3] << 16) |
1359 ((u32) scp->cmnd[4] << 8) |
1360 (u32) scp->cmnd[5]);
1361 }
1362
1363 /*
1364 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1365 */
1366 else if (scp->cmd_len == 16) {
1367 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1368 ((u32) scp->cmnd[11] << 16) |
1369 ((u32) scp->cmnd[12] << 8) |
1370 (u32) scp->cmnd[13]);
1371
1372 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1373 ((u32) scp->cmnd[7] << 16) |
1374 ((u32) scp->cmnd[8] << 8) |
1375 (u32) scp->cmnd[9]);
1376
1377 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1378 ((u32) scp->cmnd[3] << 16) |
1379 ((u32) scp->cmnd[4] << 8) |
1380 (u32) scp->cmnd[5]);
1381
1382 }
1383
1384 /*
1385 * Construct SGL
1386 */
1387 if (instance->flag_ieee) {
1388 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1389 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1390 &ldio->sgl);
1391 } else if (IS_DMA64) {
1392 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1393 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1394 } else
1395 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1396
1397 if (ldio->sge_count > instance->max_num_sge) {
1398 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1399 ldio->sge_count);
1400 return 0;
1401 }
1402
1403 /*
1404 * Sense info specific
1405 */
1406 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1407 ldio->sense_buf_phys_addr_hi = 0;
1408 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1409
1410 /*
1411 * Compute the total number of frames this command consumes. FW uses
1412 * this number to pull sufficient number of frames from host memory.
1413 */
1414 cmd->frame_count = megasas_get_frame_count(instance,
1415 ldio->sge_count, IO_FRAME);
1416
1417 return cmd->frame_count;
1418 }
1419
1420 /**
1421 * megasas_is_ldio - Checks if the cmd is for logical drive
1422 * @scmd: SCSI command
1423 *
1424 * Called by megasas_queue_command to find out if the command to be queued
1425 * is a logical drive command
1426 */
1427 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1428 {
1429 if (!MEGASAS_IS_LOGICAL(cmd))
1430 return 0;
1431 switch (cmd->cmnd[0]) {
1432 case READ_10:
1433 case WRITE_10:
1434 case READ_12:
1435 case WRITE_12:
1436 case READ_6:
1437 case WRITE_6:
1438 case READ_16:
1439 case WRITE_16:
1440 return 1;
1441 default:
1442 return 0;
1443 }
1444 }
1445
1446 /**
1447 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1448 * in FW
1449 * @instance: Adapter soft state
1450 */
1451 static inline void
1452 megasas_dump_pending_frames(struct megasas_instance *instance)
1453 {
1454 struct megasas_cmd *cmd;
1455 int i,n;
1456 union megasas_sgl *mfi_sgl;
1457 struct megasas_io_frame *ldio;
1458 struct megasas_pthru_frame *pthru;
1459 u32 sgcount;
1460 u32 max_cmd = instance->max_fw_cmds;
1461
1462 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1463 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1464 if (IS_DMA64)
1465 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1466 else
1467 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1468
1469 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1470 for (i = 0; i < max_cmd; i++) {
1471 cmd = instance->cmd_list[i];
1472 if(!cmd->scmd)
1473 continue;
1474 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1475 if (megasas_is_ldio(cmd->scmd)){
1476 ldio = (struct megasas_io_frame *)cmd->frame;
1477 mfi_sgl = &ldio->sgl;
1478 sgcount = ldio->sge_count;
1479 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1480 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1481 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1482 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1483 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1484 }
1485 else {
1486 pthru = (struct megasas_pthru_frame *) cmd->frame;
1487 mfi_sgl = &pthru->sgl;
1488 sgcount = pthru->sge_count;
1489 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1490 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1491 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1492 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1493 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1494 }
1495 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1496 for (n = 0; n < sgcount; n++){
1497 if (IS_DMA64)
1498 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1499 le32_to_cpu(mfi_sgl->sge64[n].length),
1500 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1501 else
1502 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1503 le32_to_cpu(mfi_sgl->sge32[n].length),
1504 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1505 }
1506 }
1507 printk(KERN_ERR "\n");
1508 } /*for max_cmd*/
1509 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1510 for (i = 0; i < max_cmd; i++) {
1511
1512 cmd = instance->cmd_list[i];
1513
1514 if(cmd->sync_cmd == 1){
1515 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1516 }
1517 }
1518 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1519 }
1520
1521 u32
1522 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1523 struct scsi_cmnd *scmd)
1524 {
1525 struct megasas_cmd *cmd;
1526 u32 frame_count;
1527
1528 cmd = megasas_get_cmd(instance);
1529 if (!cmd)
1530 return SCSI_MLQUEUE_HOST_BUSY;
1531
1532 /*
1533 * Logical drive command
1534 */
1535 if (megasas_is_ldio(scmd))
1536 frame_count = megasas_build_ldio(instance, scmd, cmd);
1537 else
1538 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1539
1540 if (!frame_count)
1541 goto out_return_cmd;
1542
1543 cmd->scmd = scmd;
1544 scmd->SCp.ptr = (char *)cmd;
1545
1546 /*
1547 * Issue the command to the FW
1548 */
1549 atomic_inc(&instance->fw_outstanding);
1550
1551 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1552 cmd->frame_count-1, instance->reg_set);
1553
1554 return 0;
1555 out_return_cmd:
1556 megasas_return_cmd(instance, cmd);
1557 return 1;
1558 }
1559
1560
1561 /**
1562 * megasas_queue_command - Queue entry point
1563 * @scmd: SCSI command to be queued
1564 * @done: Callback entry point
1565 */
1566 static int
1567 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1568 {
1569 struct megasas_instance *instance;
1570 unsigned long flags;
1571
1572 instance = (struct megasas_instance *)
1573 scmd->device->host->hostdata;
1574
1575 if (instance->issuepend_done == 0)
1576 return SCSI_MLQUEUE_HOST_BUSY;
1577
1578 spin_lock_irqsave(&instance->hba_lock, flags);
1579
1580 /* Check for an mpio path and adjust behavior */
1581 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1582 if (megasas_check_mpio_paths(instance, scmd) ==
1583 (DID_RESET << 16)) {
1584 spin_unlock_irqrestore(&instance->hba_lock, flags);
1585 return SCSI_MLQUEUE_HOST_BUSY;
1586 } else {
1587 spin_unlock_irqrestore(&instance->hba_lock, flags);
1588 scmd->result = DID_NO_CONNECT << 16;
1589 scmd->scsi_done(scmd);
1590 return 0;
1591 }
1592 }
1593
1594 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
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 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1602 spin_unlock_irqrestore(&instance->hba_lock, flags);
1603 return SCSI_MLQUEUE_HOST_BUSY;
1604 }
1605
1606 spin_unlock_irqrestore(&instance->hba_lock, flags);
1607
1608 scmd->result = 0;
1609
1610 if (MEGASAS_IS_LOGICAL(scmd) &&
1611 (scmd->device->id >= instance->fw_supported_vd_count ||
1612 scmd->device->lun)) {
1613 scmd->result = DID_BAD_TARGET << 16;
1614 goto out_done;
1615 }
1616
1617 switch (scmd->cmnd[0]) {
1618 case SYNCHRONIZE_CACHE:
1619 /*
1620 * FW takes care of flush cache on its own
1621 * No need to send it down
1622 */
1623 scmd->result = DID_OK << 16;
1624 goto out_done;
1625 default:
1626 break;
1627 }
1628
1629 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1630 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1631 return SCSI_MLQUEUE_HOST_BUSY;
1632 }
1633
1634 return 0;
1635
1636 out_done:
1637 scmd->scsi_done(scmd);
1638 return 0;
1639 }
1640
1641 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1642 {
1643 int i;
1644
1645 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1646
1647 if ((megasas_mgmt_info.instance[i]) &&
1648 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1649 return megasas_mgmt_info.instance[i];
1650 }
1651
1652 return NULL;
1653 }
1654
1655 static int megasas_slave_configure(struct scsi_device *sdev)
1656 {
1657 /*
1658 * The RAID firmware may require extended timeouts.
1659 */
1660 blk_queue_rq_timeout(sdev->request_queue,
1661 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1662
1663 return 0;
1664 }
1665
1666 static int megasas_slave_alloc(struct scsi_device *sdev)
1667 {
1668 u16 pd_index = 0;
1669 struct megasas_instance *instance ;
1670 instance = megasas_lookup_instance(sdev->host->host_no);
1671 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1672 /*
1673 * Open the OS scan to the SYSTEM PD
1674 */
1675 pd_index =
1676 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1677 sdev->id;
1678 if (instance->pd_list[pd_index].driveState ==
1679 MR_PD_STATE_SYSTEM) {
1680 return 0;
1681 }
1682 return -ENXIO;
1683 }
1684 return 0;
1685 }
1686
1687 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1688 {
1689 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1690 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1691 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1692 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1694 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1695 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1696 /* Flush */
1697 readl(&instance->reg_set->doorbell);
1698 if (instance->mpio && instance->requestorId)
1699 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1700 } else {
1701 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1702 }
1703 }
1704
1705 /**
1706 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1707 * restored to max value
1708 * @instance: Adapter soft state
1709 *
1710 */
1711 void
1712 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1713 {
1714 unsigned long flags;
1715 if (instance->flag & MEGASAS_FW_BUSY
1716 && time_after(jiffies, instance->last_time + 5 * HZ)
1717 && atomic_read(&instance->fw_outstanding) <
1718 instance->throttlequeuedepth + 1) {
1719
1720 spin_lock_irqsave(instance->host->host_lock, flags);
1721 instance->flag &= ~MEGASAS_FW_BUSY;
1722 if (instance->is_imr) {
1723 instance->host->can_queue =
1724 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1725 } else
1726 instance->host->can_queue =
1727 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1728
1729 spin_unlock_irqrestore(instance->host->host_lock, flags);
1730 }
1731 }
1732
1733 /**
1734 * megasas_complete_cmd_dpc - Returns FW's controller structure
1735 * @instance_addr: Address of adapter soft state
1736 *
1737 * Tasklet to complete cmds
1738 */
1739 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1740 {
1741 u32 producer;
1742 u32 consumer;
1743 u32 context;
1744 struct megasas_cmd *cmd;
1745 struct megasas_instance *instance =
1746 (struct megasas_instance *)instance_addr;
1747 unsigned long flags;
1748
1749 /* If we have already declared adapter dead, donot complete cmds */
1750 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1751 return;
1752
1753 spin_lock_irqsave(&instance->completion_lock, flags);
1754
1755 producer = le32_to_cpu(*instance->producer);
1756 consumer = le32_to_cpu(*instance->consumer);
1757
1758 while (consumer != producer) {
1759 context = le32_to_cpu(instance->reply_queue[consumer]);
1760 if (context >= instance->max_fw_cmds) {
1761 printk(KERN_ERR "Unexpected context value %x\n",
1762 context);
1763 BUG();
1764 }
1765
1766 cmd = instance->cmd_list[context];
1767
1768 megasas_complete_cmd(instance, cmd, DID_OK);
1769
1770 consumer++;
1771 if (consumer == (instance->max_fw_cmds + 1)) {
1772 consumer = 0;
1773 }
1774 }
1775
1776 *instance->consumer = cpu_to_le32(producer);
1777
1778 spin_unlock_irqrestore(&instance->completion_lock, flags);
1779
1780 /*
1781 * Check if we can restore can_queue
1782 */
1783 megasas_check_and_restore_queue_depth(instance);
1784 }
1785
1786 /**
1787 * megasas_start_timer - Initializes a timer object
1788 * @instance: Adapter soft state
1789 * @timer: timer object to be initialized
1790 * @fn: timer function
1791 * @interval: time interval between timer function call
1792 *
1793 */
1794 void megasas_start_timer(struct megasas_instance *instance,
1795 struct timer_list *timer,
1796 void *fn, unsigned long interval)
1797 {
1798 init_timer(timer);
1799 timer->expires = jiffies + interval;
1800 timer->data = (unsigned long)instance;
1801 timer->function = fn;
1802 add_timer(timer);
1803 }
1804
1805 static void
1806 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1807
1808 static void
1809 process_fw_state_change_wq(struct work_struct *work);
1810
1811 void megasas_do_ocr(struct megasas_instance *instance)
1812 {
1813 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1814 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1815 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1816 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1817 }
1818 instance->instancet->disable_intr(instance);
1819 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1820 instance->issuepend_done = 0;
1821
1822 atomic_set(&instance->fw_outstanding, 0);
1823 megasas_internal_reset_defer_cmds(instance);
1824 process_fw_state_change_wq(&instance->work_init);
1825 }
1826
1827 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1828 int initial)
1829 {
1830 struct megasas_cmd *cmd;
1831 struct megasas_dcmd_frame *dcmd;
1832 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1833 dma_addr_t new_affiliation_111_h;
1834 int ld, retval = 0;
1835 u8 thisVf;
1836
1837 cmd = megasas_get_cmd(instance);
1838
1839 if (!cmd) {
1840 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1841 "Failed to get cmd for scsi%d.\n",
1842 instance->host->host_no);
1843 return -ENOMEM;
1844 }
1845
1846 dcmd = &cmd->frame->dcmd;
1847
1848 if (!instance->vf_affiliation_111) {
1849 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1850 "affiliation for scsi%d.\n", instance->host->host_no);
1851 megasas_return_cmd(instance, cmd);
1852 return -ENOMEM;
1853 }
1854
1855 if (initial)
1856 memset(instance->vf_affiliation_111, 0,
1857 sizeof(struct MR_LD_VF_AFFILIATION_111));
1858 else {
1859 new_affiliation_111 =
1860 pci_alloc_consistent(instance->pdev,
1861 sizeof(struct MR_LD_VF_AFFILIATION_111),
1862 &new_affiliation_111_h);
1863 if (!new_affiliation_111) {
1864 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1865 "memory for new affiliation for scsi%d.\n",
1866 instance->host->host_no);
1867 megasas_return_cmd(instance, cmd);
1868 return -ENOMEM;
1869 }
1870 memset(new_affiliation_111, 0,
1871 sizeof(struct MR_LD_VF_AFFILIATION_111));
1872 }
1873
1874 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1875
1876 dcmd->cmd = MFI_CMD_DCMD;
1877 dcmd->cmd_status = 0xFF;
1878 dcmd->sge_count = 1;
1879 dcmd->flags = MFI_FRAME_DIR_BOTH;
1880 dcmd->timeout = 0;
1881 dcmd->pad_0 = 0;
1882 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1883 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
1884
1885 if (initial)
1886 dcmd->sgl.sge32[0].phys_addr =
1887 instance->vf_affiliation_111_h;
1888 else
1889 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1890
1891 dcmd->sgl.sge32[0].length =
1892 sizeof(struct MR_LD_VF_AFFILIATION_111);
1893
1894 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1895 "scsi%d\n", instance->host->host_no);
1896
1897 megasas_issue_blocked_cmd(instance, cmd, 0);
1898
1899 if (dcmd->cmd_status) {
1900 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1901 " failed with status 0x%x for scsi%d.\n",
1902 dcmd->cmd_status, instance->host->host_no);
1903 retval = 1; /* Do a scan if we couldn't get affiliation */
1904 goto out;
1905 }
1906
1907 if (!initial) {
1908 thisVf = new_affiliation_111->thisVf;
1909 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1910 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1911 new_affiliation_111->map[ld].policy[thisVf]) {
1912 printk(KERN_WARNING "megasas: SR-IOV: "
1913 "Got new LD/VF affiliation "
1914 "for scsi%d.\n",
1915 instance->host->host_no);
1916 memcpy(instance->vf_affiliation_111,
1917 new_affiliation_111,
1918 sizeof(struct MR_LD_VF_AFFILIATION_111));
1919 retval = 1;
1920 goto out;
1921 }
1922 }
1923 out:
1924 if (new_affiliation_111) {
1925 pci_free_consistent(instance->pdev,
1926 sizeof(struct MR_LD_VF_AFFILIATION_111),
1927 new_affiliation_111,
1928 new_affiliation_111_h);
1929 }
1930
1931 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
1932 megasas_return_mfi_mpt_pthr(instance, cmd,
1933 cmd->mpt_pthr_cmd_blocked);
1934 else
1935 megasas_return_cmd(instance, cmd);
1936
1937 return retval;
1938 }
1939
1940 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1941 int initial)
1942 {
1943 struct megasas_cmd *cmd;
1944 struct megasas_dcmd_frame *dcmd;
1945 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1946 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1947 dma_addr_t new_affiliation_h;
1948 int i, j, retval = 0, found = 0, doscan = 0;
1949 u8 thisVf;
1950
1951 cmd = megasas_get_cmd(instance);
1952
1953 if (!cmd) {
1954 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
1955 "Failed to get cmd for scsi%d.\n",
1956 instance->host->host_no);
1957 return -ENOMEM;
1958 }
1959
1960 dcmd = &cmd->frame->dcmd;
1961
1962 if (!instance->vf_affiliation) {
1963 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1964 "affiliation for scsi%d.\n", instance->host->host_no);
1965 megasas_return_cmd(instance, cmd);
1966 return -ENOMEM;
1967 }
1968
1969 if (initial)
1970 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1971 sizeof(struct MR_LD_VF_AFFILIATION));
1972 else {
1973 new_affiliation =
1974 pci_alloc_consistent(instance->pdev,
1975 (MAX_LOGICAL_DRIVES + 1) *
1976 sizeof(struct MR_LD_VF_AFFILIATION),
1977 &new_affiliation_h);
1978 if (!new_affiliation) {
1979 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1980 "memory for new affiliation for scsi%d.\n",
1981 instance->host->host_no);
1982 megasas_return_cmd(instance, cmd);
1983 return -ENOMEM;
1984 }
1985 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1986 sizeof(struct MR_LD_VF_AFFILIATION));
1987 }
1988
1989 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1990
1991 dcmd->cmd = MFI_CMD_DCMD;
1992 dcmd->cmd_status = 0xFF;
1993 dcmd->sge_count = 1;
1994 dcmd->flags = MFI_FRAME_DIR_BOTH;
1995 dcmd->timeout = 0;
1996 dcmd->pad_0 = 0;
1997 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
1998 sizeof(struct MR_LD_VF_AFFILIATION);
1999 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
2000
2001 if (initial)
2002 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h;
2003 else
2004 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
2005
2006 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
2007 sizeof(struct MR_LD_VF_AFFILIATION);
2008
2009 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2010 "scsi%d\n", instance->host->host_no);
2011
2012 megasas_issue_blocked_cmd(instance, cmd, 0);
2013
2014 if (dcmd->cmd_status) {
2015 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2016 " failed with status 0x%x for scsi%d.\n",
2017 dcmd->cmd_status, instance->host->host_no);
2018 retval = 1; /* Do a scan if we couldn't get affiliation */
2019 goto out;
2020 }
2021
2022 if (!initial) {
2023 if (!new_affiliation->ldCount) {
2024 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2025 "affiliation for passive path for scsi%d.\n",
2026 instance->host->host_no);
2027 retval = 1;
2028 goto out;
2029 }
2030 newmap = new_affiliation->map;
2031 savedmap = instance->vf_affiliation->map;
2032 thisVf = new_affiliation->thisVf;
2033 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2034 found = 0;
2035 for (j = 0; j < instance->vf_affiliation->ldCount;
2036 j++) {
2037 if (newmap->ref.targetId ==
2038 savedmap->ref.targetId) {
2039 found = 1;
2040 if (newmap->policy[thisVf] !=
2041 savedmap->policy[thisVf]) {
2042 doscan = 1;
2043 goto out;
2044 }
2045 }
2046 savedmap = (struct MR_LD_VF_MAP *)
2047 ((unsigned char *)savedmap +
2048 savedmap->size);
2049 }
2050 if (!found && newmap->policy[thisVf] !=
2051 MR_LD_ACCESS_HIDDEN) {
2052 doscan = 1;
2053 goto out;
2054 }
2055 newmap = (struct MR_LD_VF_MAP *)
2056 ((unsigned char *)newmap + newmap->size);
2057 }
2058
2059 newmap = new_affiliation->map;
2060 savedmap = instance->vf_affiliation->map;
2061
2062 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2063 found = 0;
2064 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2065 if (savedmap->ref.targetId ==
2066 newmap->ref.targetId) {
2067 found = 1;
2068 if (savedmap->policy[thisVf] !=
2069 newmap->policy[thisVf]) {
2070 doscan = 1;
2071 goto out;
2072 }
2073 }
2074 newmap = (struct MR_LD_VF_MAP *)
2075 ((unsigned char *)newmap +
2076 newmap->size);
2077 }
2078 if (!found && savedmap->policy[thisVf] !=
2079 MR_LD_ACCESS_HIDDEN) {
2080 doscan = 1;
2081 goto out;
2082 }
2083 savedmap = (struct MR_LD_VF_MAP *)
2084 ((unsigned char *)savedmap +
2085 savedmap->size);
2086 }
2087 }
2088 out:
2089 if (doscan) {
2090 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2091 "affiliation for scsi%d.\n", instance->host->host_no);
2092 memcpy(instance->vf_affiliation, new_affiliation,
2093 new_affiliation->size);
2094 retval = 1;
2095 }
2096
2097 if (new_affiliation)
2098 pci_free_consistent(instance->pdev,
2099 (MAX_LOGICAL_DRIVES + 1) *
2100 sizeof(struct MR_LD_VF_AFFILIATION),
2101 new_affiliation, new_affiliation_h);
2102 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2103 megasas_return_mfi_mpt_pthr(instance, cmd,
2104 cmd->mpt_pthr_cmd_blocked);
2105 else
2106 megasas_return_cmd(instance, cmd);
2107
2108 return retval;
2109 }
2110
2111 /* This function will get the current SR-IOV LD/VF affiliation */
2112 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2113 int initial)
2114 {
2115 int retval;
2116
2117 if (instance->PlasmaFW111)
2118 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2119 else
2120 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2121 return retval;
2122 }
2123
2124 /* This function will tell FW to start the SR-IOV heartbeat */
2125 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2126 int initial)
2127 {
2128 struct megasas_cmd *cmd;
2129 struct megasas_dcmd_frame *dcmd;
2130 int retval = 0;
2131
2132 cmd = megasas_get_cmd(instance);
2133
2134 if (!cmd) {
2135 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2136 "Failed to get cmd for scsi%d.\n",
2137 instance->host->host_no);
2138 return -ENOMEM;
2139 }
2140
2141 dcmd = &cmd->frame->dcmd;
2142
2143 if (initial) {
2144 instance->hb_host_mem =
2145 pci_zalloc_consistent(instance->pdev,
2146 sizeof(struct MR_CTRL_HB_HOST_MEM),
2147 &instance->hb_host_mem_h);
2148 if (!instance->hb_host_mem) {
2149 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2150 " memory for heartbeat host memory for "
2151 "scsi%d.\n", instance->host->host_no);
2152 retval = -ENOMEM;
2153 goto out;
2154 }
2155 }
2156
2157 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2158
2159 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2160 dcmd->cmd = MFI_CMD_DCMD;
2161 dcmd->cmd_status = 0xFF;
2162 dcmd->sge_count = 1;
2163 dcmd->flags = MFI_FRAME_DIR_BOTH;
2164 dcmd->timeout = 0;
2165 dcmd->pad_0 = 0;
2166 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2167 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2168 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2169 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2170
2171 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2172 instance->host->host_no);
2173
2174 if (!megasas_issue_polled(instance, cmd)) {
2175 retval = 0;
2176 } else {
2177 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2178 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2179 instance->host->host_no);
2180 retval = 1;
2181 goto out;
2182 }
2183
2184
2185 if (dcmd->cmd_status) {
2186 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2187 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2188 dcmd->cmd_status,
2189 instance->host->host_no);
2190 retval = 1;
2191 goto out;
2192 }
2193
2194 out:
2195 megasas_return_cmd(instance, cmd);
2196
2197 return retval;
2198 }
2199
2200 /* Handler for SR-IOV heartbeat */
2201 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2202 {
2203 struct megasas_instance *instance =
2204 (struct megasas_instance *)instance_addr;
2205
2206 if (instance->hb_host_mem->HB.fwCounter !=
2207 instance->hb_host_mem->HB.driverCounter) {
2208 instance->hb_host_mem->HB.driverCounter =
2209 instance->hb_host_mem->HB.fwCounter;
2210 mod_timer(&instance->sriov_heartbeat_timer,
2211 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2212 } else {
2213 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2214 "completed for scsi%d\n", instance->host->host_no);
2215 schedule_work(&instance->work_init);
2216 }
2217 }
2218
2219 /**
2220 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2221 * @instance: Adapter soft state
2222 *
2223 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2224 * complete all its outstanding commands. Returns error if one or more IOs
2225 * are pending after this time period. It also marks the controller dead.
2226 */
2227 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2228 {
2229 int i;
2230 u32 reset_index;
2231 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2232 u8 adprecovery;
2233 unsigned long flags;
2234 struct list_head clist_local;
2235 struct megasas_cmd *reset_cmd;
2236 u32 fw_state;
2237 u8 kill_adapter_flag;
2238
2239 spin_lock_irqsave(&instance->hba_lock, flags);
2240 adprecovery = instance->adprecovery;
2241 spin_unlock_irqrestore(&instance->hba_lock, flags);
2242
2243 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2244
2245 INIT_LIST_HEAD(&clist_local);
2246 spin_lock_irqsave(&instance->hba_lock, flags);
2247 list_splice_init(&instance->internal_reset_pending_q,
2248 &clist_local);
2249 spin_unlock_irqrestore(&instance->hba_lock, flags);
2250
2251 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2252 for (i = 0; i < wait_time; i++) {
2253 msleep(1000);
2254 spin_lock_irqsave(&instance->hba_lock, flags);
2255 adprecovery = instance->adprecovery;
2256 spin_unlock_irqrestore(&instance->hba_lock, flags);
2257 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2258 break;
2259 }
2260
2261 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2262 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2263 spin_lock_irqsave(&instance->hba_lock, flags);
2264 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2265 spin_unlock_irqrestore(&instance->hba_lock, flags);
2266 return FAILED;
2267 }
2268
2269 reset_index = 0;
2270 while (!list_empty(&clist_local)) {
2271 reset_cmd = list_entry((&clist_local)->next,
2272 struct megasas_cmd, list);
2273 list_del_init(&reset_cmd->list);
2274 if (reset_cmd->scmd) {
2275 reset_cmd->scmd->result = DID_RESET << 16;
2276 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
2277 reset_index, reset_cmd,
2278 reset_cmd->scmd->cmnd[0]);
2279
2280 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2281 megasas_return_cmd(instance, reset_cmd);
2282 } else if (reset_cmd->sync_cmd) {
2283 printk(KERN_NOTICE "megasas:%p synch cmds"
2284 "reset queue\n",
2285 reset_cmd);
2286
2287 reset_cmd->cmd_status = ENODATA;
2288 instance->instancet->fire_cmd(instance,
2289 reset_cmd->frame_phys_addr,
2290 0, instance->reg_set);
2291 } else {
2292 printk(KERN_NOTICE "megasas: %p unexpected"
2293 "cmds lst\n",
2294 reset_cmd);
2295 }
2296 reset_index++;
2297 }
2298
2299 return SUCCESS;
2300 }
2301
2302 for (i = 0; i < resetwaittime; i++) {
2303
2304 int outstanding = atomic_read(&instance->fw_outstanding);
2305
2306 if (!outstanding)
2307 break;
2308
2309 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2310 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2311 "commands to complete\n",i,outstanding);
2312 /*
2313 * Call cmd completion routine. Cmd to be
2314 * be completed directly without depending on isr.
2315 */
2316 megasas_complete_cmd_dpc((unsigned long)instance);
2317 }
2318
2319 msleep(1000);
2320 }
2321
2322 i = 0;
2323 kill_adapter_flag = 0;
2324 do {
2325 fw_state = instance->instancet->read_fw_status_reg(
2326 instance->reg_set) & MFI_STATE_MASK;
2327 if ((fw_state == MFI_STATE_FAULT) &&
2328 (instance->disableOnlineCtrlReset == 0)) {
2329 if (i == 3) {
2330 kill_adapter_flag = 2;
2331 break;
2332 }
2333 megasas_do_ocr(instance);
2334 kill_adapter_flag = 1;
2335
2336 /* wait for 1 secs to let FW finish the pending cmds */
2337 msleep(1000);
2338 }
2339 i++;
2340 } while (i <= 3);
2341
2342 if (atomic_read(&instance->fw_outstanding) &&
2343 !kill_adapter_flag) {
2344 if (instance->disableOnlineCtrlReset == 0) {
2345
2346 megasas_do_ocr(instance);
2347
2348 /* wait for 5 secs to let FW finish the pending cmds */
2349 for (i = 0; i < wait_time; i++) {
2350 int outstanding =
2351 atomic_read(&instance->fw_outstanding);
2352 if (!outstanding)
2353 return SUCCESS;
2354 msleep(1000);
2355 }
2356 }
2357 }
2358
2359 if (atomic_read(&instance->fw_outstanding) ||
2360 (kill_adapter_flag == 2)) {
2361 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
2362 /*
2363 * Send signal to FW to stop processing any pending cmds.
2364 * The controller will be taken offline by the OS now.
2365 */
2366 if ((instance->pdev->device ==
2367 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2368 (instance->pdev->device ==
2369 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2370 writel(MFI_STOP_ADP,
2371 &instance->reg_set->doorbell);
2372 } else {
2373 writel(MFI_STOP_ADP,
2374 &instance->reg_set->inbound_doorbell);
2375 }
2376 megasas_dump_pending_frames(instance);
2377 spin_lock_irqsave(&instance->hba_lock, flags);
2378 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2379 spin_unlock_irqrestore(&instance->hba_lock, flags);
2380 return FAILED;
2381 }
2382
2383 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2384
2385 return SUCCESS;
2386 }
2387
2388 /**
2389 * megasas_generic_reset - Generic reset routine
2390 * @scmd: Mid-layer SCSI command
2391 *
2392 * This routine implements a generic reset handler for device, bus and host
2393 * reset requests. Device, bus and host specific reset handlers can use this
2394 * function after they do their specific tasks.
2395 */
2396 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2397 {
2398 int ret_val;
2399 struct megasas_instance *instance;
2400
2401 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2402
2403 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2404 scmd->cmnd[0], scmd->retries);
2405
2406 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2407 printk(KERN_ERR "megasas: cannot recover from previous reset "
2408 "failures\n");
2409 return FAILED;
2410 }
2411
2412 ret_val = megasas_wait_for_outstanding(instance);
2413 if (ret_val == SUCCESS)
2414 printk(KERN_NOTICE "megasas: reset successful \n");
2415 else
2416 printk(KERN_ERR "megasas: failed to do reset\n");
2417
2418 return ret_val;
2419 }
2420
2421 /**
2422 * megasas_reset_timer - quiesce the adapter if required
2423 * @scmd: scsi cmnd
2424 *
2425 * Sets the FW busy flag and reduces the host->can_queue if the
2426 * cmd has not been completed within the timeout period.
2427 */
2428 static enum
2429 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2430 {
2431 struct megasas_instance *instance;
2432 unsigned long flags;
2433
2434 if (time_after(jiffies, scmd->jiffies_at_alloc +
2435 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
2436 return BLK_EH_NOT_HANDLED;
2437 }
2438
2439 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2440 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2441 /* FW is busy, throttle IO */
2442 spin_lock_irqsave(instance->host->host_lock, flags);
2443
2444 instance->host->can_queue = instance->throttlequeuedepth;
2445 instance->last_time = jiffies;
2446 instance->flag |= MEGASAS_FW_BUSY;
2447
2448 spin_unlock_irqrestore(instance->host->host_lock, flags);
2449 }
2450 return BLK_EH_RESET_TIMER;
2451 }
2452
2453 /**
2454 * megasas_reset_device - Device reset handler entry point
2455 */
2456 static int megasas_reset_device(struct scsi_cmnd *scmd)
2457 {
2458 int ret;
2459
2460 /*
2461 * First wait for all commands to complete
2462 */
2463 ret = megasas_generic_reset(scmd);
2464
2465 return ret;
2466 }
2467
2468 /**
2469 * megasas_reset_bus_host - Bus & host reset handler entry point
2470 */
2471 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2472 {
2473 int ret;
2474 struct megasas_instance *instance;
2475 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2476
2477 /*
2478 * First wait for all commands to complete
2479 */
2480 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
2481 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
2482 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2483 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2484 ret = megasas_reset_fusion(scmd->device->host, 1);
2485 else
2486 ret = megasas_generic_reset(scmd);
2487
2488 return ret;
2489 }
2490
2491 /**
2492 * megasas_bios_param - Returns disk geometry for a disk
2493 * @sdev: device handle
2494 * @bdev: block device
2495 * @capacity: drive capacity
2496 * @geom: geometry parameters
2497 */
2498 static int
2499 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2500 sector_t capacity, int geom[])
2501 {
2502 int heads;
2503 int sectors;
2504 sector_t cylinders;
2505 unsigned long tmp;
2506 /* Default heads (64) & sectors (32) */
2507 heads = 64;
2508 sectors = 32;
2509
2510 tmp = heads * sectors;
2511 cylinders = capacity;
2512
2513 sector_div(cylinders, tmp);
2514
2515 /*
2516 * Handle extended translation size for logical drives > 1Gb
2517 */
2518
2519 if (capacity >= 0x200000) {
2520 heads = 255;
2521 sectors = 63;
2522 tmp = heads*sectors;
2523 cylinders = capacity;
2524 sector_div(cylinders, tmp);
2525 }
2526
2527 geom[0] = heads;
2528 geom[1] = sectors;
2529 geom[2] = cylinders;
2530
2531 return 0;
2532 }
2533
2534 static void megasas_aen_polling(struct work_struct *work);
2535
2536 /**
2537 * megasas_service_aen - Processes an event notification
2538 * @instance: Adapter soft state
2539 * @cmd: AEN command completed by the ISR
2540 *
2541 * For AEN, driver sends a command down to FW that is held by the FW till an
2542 * event occurs. When an event of interest occurs, FW completes the command
2543 * that it was previously holding.
2544 *
2545 * This routines sends SIGIO signal to processes that have registered with the
2546 * driver for AEN.
2547 */
2548 static void
2549 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2550 {
2551 unsigned long flags;
2552 /*
2553 * Don't signal app if it is just an aborted previously registered aen
2554 */
2555 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2556 spin_lock_irqsave(&poll_aen_lock, flags);
2557 megasas_poll_wait_aen = 1;
2558 spin_unlock_irqrestore(&poll_aen_lock, flags);
2559 wake_up(&megasas_poll_wait);
2560 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2561 }
2562 else
2563 cmd->abort_aen = 0;
2564
2565 instance->aen_cmd = NULL;
2566
2567 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2568 megasas_return_mfi_mpt_pthr(instance, cmd,
2569 cmd->mpt_pthr_cmd_blocked);
2570 else
2571 megasas_return_cmd(instance, cmd);
2572
2573 if ((instance->unload == 0) &&
2574 ((instance->issuepend_done == 1))) {
2575 struct megasas_aen_event *ev;
2576 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2577 if (!ev) {
2578 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2579 } else {
2580 ev->instance = instance;
2581 instance->ev = ev;
2582 INIT_DELAYED_WORK(&ev->hotplug_work,
2583 megasas_aen_polling);
2584 schedule_delayed_work(&ev->hotplug_work, 0);
2585 }
2586 }
2587 }
2588
2589 static int megasas_change_queue_depth(struct scsi_device *sdev,
2590 int queue_depth, int reason)
2591 {
2592 if (reason != SCSI_QDEPTH_DEFAULT)
2593 return -EOPNOTSUPP;
2594
2595 if (queue_depth > sdev->host->can_queue)
2596 queue_depth = sdev->host->can_queue;
2597 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2598 queue_depth);
2599
2600 return queue_depth;
2601 }
2602
2603 static ssize_t
2604 megasas_fw_crash_buffer_store(struct device *cdev,
2605 struct device_attribute *attr, const char *buf, size_t count)
2606 {
2607 struct Scsi_Host *shost = class_to_shost(cdev);
2608 struct megasas_instance *instance =
2609 (struct megasas_instance *) shost->hostdata;
2610 int val = 0;
2611 unsigned long flags;
2612
2613 if (kstrtoint(buf, 0, &val) != 0)
2614 return -EINVAL;
2615
2616 spin_lock_irqsave(&instance->crashdump_lock, flags);
2617 instance->fw_crash_buffer_offset = val;
2618 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2619 return strlen(buf);
2620 }
2621
2622 static ssize_t
2623 megasas_fw_crash_buffer_show(struct device *cdev,
2624 struct device_attribute *attr, char *buf)
2625 {
2626 struct Scsi_Host *shost = class_to_shost(cdev);
2627 struct megasas_instance *instance =
2628 (struct megasas_instance *) shost->hostdata;
2629 u32 size;
2630 unsigned long buff_addr;
2631 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2632 unsigned long src_addr;
2633 unsigned long flags;
2634 u32 buff_offset;
2635
2636 spin_lock_irqsave(&instance->crashdump_lock, flags);
2637 buff_offset = instance->fw_crash_buffer_offset;
2638 if (!instance->crash_dump_buf &&
2639 !((instance->fw_crash_state == AVAILABLE) ||
2640 (instance->fw_crash_state == COPYING))) {
2641 dev_err(&instance->pdev->dev,
2642 "Firmware crash dump is not available\n");
2643 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2644 return -EINVAL;
2645 }
2646
2647 buff_addr = (unsigned long) buf;
2648
2649 if (buff_offset >
2650 (instance->fw_crash_buffer_size * dmachunk)) {
2651 dev_err(&instance->pdev->dev,
2652 "Firmware crash dump offset is out of range\n");
2653 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2654 return 0;
2655 }
2656
2657 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2658 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2659
2660 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2661 (buff_offset % dmachunk);
2662 memcpy(buf, (void *)src_addr, size);
2663 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2664
2665 return size;
2666 }
2667
2668 static ssize_t
2669 megasas_fw_crash_buffer_size_show(struct device *cdev,
2670 struct device_attribute *attr, char *buf)
2671 {
2672 struct Scsi_Host *shost = class_to_shost(cdev);
2673 struct megasas_instance *instance =
2674 (struct megasas_instance *) shost->hostdata;
2675
2676 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2677 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2678 }
2679
2680 static ssize_t
2681 megasas_fw_crash_state_store(struct device *cdev,
2682 struct device_attribute *attr, const char *buf, size_t count)
2683 {
2684 struct Scsi_Host *shost = class_to_shost(cdev);
2685 struct megasas_instance *instance =
2686 (struct megasas_instance *) shost->hostdata;
2687 int val = 0;
2688 unsigned long flags;
2689
2690 if (kstrtoint(buf, 0, &val) != 0)
2691 return -EINVAL;
2692
2693 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2694 dev_err(&instance->pdev->dev, "application updates invalid "
2695 "firmware crash state\n");
2696 return -EINVAL;
2697 }
2698
2699 instance->fw_crash_state = val;
2700
2701 if ((val == COPIED) || (val == COPY_ERROR)) {
2702 spin_lock_irqsave(&instance->crashdump_lock, flags);
2703 megasas_free_host_crash_buffer(instance);
2704 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2705 if (val == COPY_ERROR)
2706 dev_info(&instance->pdev->dev, "application failed to "
2707 "copy Firmware crash dump\n");
2708 else
2709 dev_info(&instance->pdev->dev, "Firmware crash dump "
2710 "copied successfully\n");
2711 }
2712 return strlen(buf);
2713 }
2714
2715 static ssize_t
2716 megasas_fw_crash_state_show(struct device *cdev,
2717 struct device_attribute *attr, char *buf)
2718 {
2719 struct Scsi_Host *shost = class_to_shost(cdev);
2720 struct megasas_instance *instance =
2721 (struct megasas_instance *) shost->hostdata;
2722 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2723 }
2724
2725 static ssize_t
2726 megasas_page_size_show(struct device *cdev,
2727 struct device_attribute *attr, char *buf)
2728 {
2729 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2730 }
2731
2732 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2733 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2734 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2735 megasas_fw_crash_buffer_size_show, NULL);
2736 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2737 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2738 static DEVICE_ATTR(page_size, S_IRUGO,
2739 megasas_page_size_show, NULL);
2740
2741 struct device_attribute *megaraid_host_attrs[] = {
2742 &dev_attr_fw_crash_buffer_size,
2743 &dev_attr_fw_crash_buffer,
2744 &dev_attr_fw_crash_state,
2745 &dev_attr_page_size,
2746 NULL,
2747 };
2748
2749 /*
2750 * Scsi host template for megaraid_sas driver
2751 */
2752 static struct scsi_host_template megasas_template = {
2753
2754 .module = THIS_MODULE,
2755 .name = "LSI SAS based MegaRAID driver",
2756 .proc_name = "megaraid_sas",
2757 .slave_configure = megasas_slave_configure,
2758 .slave_alloc = megasas_slave_alloc,
2759 .queuecommand = megasas_queue_command,
2760 .eh_device_reset_handler = megasas_reset_device,
2761 .eh_bus_reset_handler = megasas_reset_bus_host,
2762 .eh_host_reset_handler = megasas_reset_bus_host,
2763 .eh_timed_out = megasas_reset_timer,
2764 .shost_attrs = megaraid_host_attrs,
2765 .bios_param = megasas_bios_param,
2766 .use_clustering = ENABLE_CLUSTERING,
2767 .change_queue_depth = megasas_change_queue_depth,
2768 .no_write_same = 1,
2769 };
2770
2771 /**
2772 * megasas_complete_int_cmd - Completes an internal command
2773 * @instance: Adapter soft state
2774 * @cmd: Command to be completed
2775 *
2776 * The megasas_issue_blocked_cmd() function waits for a command to complete
2777 * after it issues a command. This function wakes up that waiting routine by
2778 * calling wake_up() on the wait queue.
2779 */
2780 static void
2781 megasas_complete_int_cmd(struct megasas_instance *instance,
2782 struct megasas_cmd *cmd)
2783 {
2784 cmd->cmd_status = cmd->frame->io.cmd_status;
2785
2786 if (cmd->cmd_status == ENODATA) {
2787 cmd->cmd_status = 0;
2788 }
2789 wake_up(&instance->int_cmd_wait_q);
2790 }
2791
2792 /**
2793 * megasas_complete_abort - Completes aborting a command
2794 * @instance: Adapter soft state
2795 * @cmd: Cmd that was issued to abort another cmd
2796 *
2797 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2798 * after it issues an abort on a previously issued command. This function
2799 * wakes up all functions waiting on the same wait queue.
2800 */
2801 static void
2802 megasas_complete_abort(struct megasas_instance *instance,
2803 struct megasas_cmd *cmd)
2804 {
2805 if (cmd->sync_cmd) {
2806 cmd->sync_cmd = 0;
2807 cmd->cmd_status = 0;
2808 wake_up(&instance->abort_cmd_wait_q);
2809 }
2810
2811 return;
2812 }
2813
2814 /**
2815 * megasas_complete_cmd - Completes a command
2816 * @instance: Adapter soft state
2817 * @cmd: Command to be completed
2818 * @alt_status: If non-zero, use this value as status to
2819 * SCSI mid-layer instead of the value returned
2820 * by the FW. This should be used if caller wants
2821 * an alternate status (as in the case of aborted
2822 * commands)
2823 */
2824 void
2825 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2826 u8 alt_status)
2827 {
2828 int exception = 0;
2829 struct megasas_header *hdr = &cmd->frame->hdr;
2830 unsigned long flags;
2831 struct fusion_context *fusion = instance->ctrl_context;
2832 u32 opcode;
2833
2834 /* flag for the retry reset */
2835 cmd->retry_for_fw_reset = 0;
2836
2837 if (cmd->scmd)
2838 cmd->scmd->SCp.ptr = NULL;
2839
2840 switch (hdr->cmd) {
2841 case MFI_CMD_INVALID:
2842 /* Some older 1068 controller FW may keep a pended
2843 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2844 when booting the kdump kernel. Ignore this command to
2845 prevent a kernel panic on shutdown of the kdump kernel. */
2846 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2847 "completed.\n");
2848 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2849 "other than PERC5, please upgrade your firmware.\n");
2850 break;
2851 case MFI_CMD_PD_SCSI_IO:
2852 case MFI_CMD_LD_SCSI_IO:
2853
2854 /*
2855 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2856 * issued either through an IO path or an IOCTL path. If it
2857 * was via IOCTL, we will send it to internal completion.
2858 */
2859 if (cmd->sync_cmd) {
2860 cmd->sync_cmd = 0;
2861 megasas_complete_int_cmd(instance, cmd);
2862 break;
2863 }
2864
2865 case MFI_CMD_LD_READ:
2866 case MFI_CMD_LD_WRITE:
2867
2868 if (alt_status) {
2869 cmd->scmd->result = alt_status << 16;
2870 exception = 1;
2871 }
2872
2873 if (exception) {
2874
2875 atomic_dec(&instance->fw_outstanding);
2876
2877 scsi_dma_unmap(cmd->scmd);
2878 cmd->scmd->scsi_done(cmd->scmd);
2879 megasas_return_cmd(instance, cmd);
2880
2881 break;
2882 }
2883
2884 switch (hdr->cmd_status) {
2885
2886 case MFI_STAT_OK:
2887 cmd->scmd->result = DID_OK << 16;
2888 break;
2889
2890 case MFI_STAT_SCSI_IO_FAILED:
2891 case MFI_STAT_LD_INIT_IN_PROGRESS:
2892 cmd->scmd->result =
2893 (DID_ERROR << 16) | hdr->scsi_status;
2894 break;
2895
2896 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2897
2898 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2899
2900 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2901 memset(cmd->scmd->sense_buffer, 0,
2902 SCSI_SENSE_BUFFERSIZE);
2903 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2904 hdr->sense_len);
2905
2906 cmd->scmd->result |= DRIVER_SENSE << 24;
2907 }
2908
2909 break;
2910
2911 case MFI_STAT_LD_OFFLINE:
2912 case MFI_STAT_DEVICE_NOT_FOUND:
2913 cmd->scmd->result = DID_BAD_TARGET << 16;
2914 break;
2915
2916 default:
2917 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2918 hdr->cmd_status);
2919 cmd->scmd->result = DID_ERROR << 16;
2920 break;
2921 }
2922
2923 atomic_dec(&instance->fw_outstanding);
2924
2925 scsi_dma_unmap(cmd->scmd);
2926 cmd->scmd->scsi_done(cmd->scmd);
2927 megasas_return_cmd(instance, cmd);
2928
2929 break;
2930
2931 case MFI_CMD_SMP:
2932 case MFI_CMD_STP:
2933 case MFI_CMD_DCMD:
2934 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
2935 /* Check for LD map update */
2936 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2937 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
2938 fusion->fast_path_io = 0;
2939 spin_lock_irqsave(instance->host->host_lock, flags);
2940 if (cmd->frame->hdr.cmd_status != 0) {
2941 if (cmd->frame->hdr.cmd_status !=
2942 MFI_STAT_NOT_FOUND)
2943 printk(KERN_WARNING "megasas: map sync"
2944 "failed, status = 0x%x.\n",
2945 cmd->frame->hdr.cmd_status);
2946 else {
2947 megasas_return_mfi_mpt_pthr(instance,
2948 cmd, cmd->mpt_pthr_cmd_blocked);
2949 spin_unlock_irqrestore(
2950 instance->host->host_lock,
2951 flags);
2952 break;
2953 }
2954 } else
2955 instance->map_id++;
2956 megasas_return_mfi_mpt_pthr(instance, cmd,
2957 cmd->mpt_pthr_cmd_blocked);
2958
2959 /*
2960 * Set fast path IO to ZERO.
2961 * Validate Map will set proper value.
2962 * Meanwhile all IOs will go as LD IO.
2963 */
2964 if (MR_ValidateMapInfo(instance))
2965 fusion->fast_path_io = 1;
2966 else
2967 fusion->fast_path_io = 0;
2968 megasas_sync_map_info(instance);
2969 spin_unlock_irqrestore(instance->host->host_lock,
2970 flags);
2971 break;
2972 }
2973 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2974 opcode == MR_DCMD_CTRL_EVENT_GET) {
2975 spin_lock_irqsave(&poll_aen_lock, flags);
2976 megasas_poll_wait_aen = 0;
2977 spin_unlock_irqrestore(&poll_aen_lock, flags);
2978 }
2979
2980 /*
2981 * See if got an event notification
2982 */
2983 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2984 megasas_service_aen(instance, cmd);
2985 else
2986 megasas_complete_int_cmd(instance, cmd);
2987
2988 break;
2989
2990 case MFI_CMD_ABORT:
2991 /*
2992 * Cmd issued to abort another cmd returned
2993 */
2994 megasas_complete_abort(instance, cmd);
2995 break;
2996
2997 default:
2998 printk("megasas: Unknown command completed! [0x%X]\n",
2999 hdr->cmd);
3000 break;
3001 }
3002 }
3003
3004 /**
3005 * megasas_issue_pending_cmds_again - issue all pending cmds
3006 * in FW again because of the fw reset
3007 * @instance: Adapter soft state
3008 */
3009 static inline void
3010 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3011 {
3012 struct megasas_cmd *cmd;
3013 struct list_head clist_local;
3014 union megasas_evt_class_locale class_locale;
3015 unsigned long flags;
3016 u32 seq_num;
3017
3018 INIT_LIST_HEAD(&clist_local);
3019 spin_lock_irqsave(&instance->hba_lock, flags);
3020 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3021 spin_unlock_irqrestore(&instance->hba_lock, flags);
3022
3023 while (!list_empty(&clist_local)) {
3024 cmd = list_entry((&clist_local)->next,
3025 struct megasas_cmd, list);
3026 list_del_init(&cmd->list);
3027
3028 if (cmd->sync_cmd || cmd->scmd) {
3029 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3030 "detected to be pending while HBA reset.\n",
3031 cmd, cmd->scmd, cmd->sync_cmd);
3032
3033 cmd->retry_for_fw_reset++;
3034
3035 if (cmd->retry_for_fw_reset == 3) {
3036 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3037 "was tried multiple times during reset."
3038 "Shutting down the HBA\n",
3039 cmd, cmd->scmd, cmd->sync_cmd);
3040 megaraid_sas_kill_hba(instance);
3041
3042 instance->adprecovery =
3043 MEGASAS_HW_CRITICAL_ERROR;
3044 return;
3045 }
3046 }
3047
3048 if (cmd->sync_cmd == 1) {
3049 if (cmd->scmd) {
3050 printk(KERN_NOTICE "megaraid_sas: unexpected"
3051 "cmd attached to internal command!\n");
3052 }
3053 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3054 "on the internal reset queue,"
3055 "issue it again.\n", cmd);
3056 cmd->cmd_status = ENODATA;
3057 instance->instancet->fire_cmd(instance,
3058 cmd->frame_phys_addr ,
3059 0, instance->reg_set);
3060 } else if (cmd->scmd) {
3061 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
3062 "detected on the internal queue, issue again.\n",
3063 cmd, cmd->scmd->cmnd[0]);
3064
3065 atomic_inc(&instance->fw_outstanding);
3066 instance->instancet->fire_cmd(instance,
3067 cmd->frame_phys_addr,
3068 cmd->frame_count-1, instance->reg_set);
3069 } else {
3070 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3071 "internal reset defer list while re-issue!!\n",
3072 cmd);
3073 }
3074 }
3075
3076 if (instance->aen_cmd) {
3077 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3078 megasas_return_cmd(instance, instance->aen_cmd);
3079
3080 instance->aen_cmd = NULL;
3081 }
3082
3083 /*
3084 * Initiate AEN (Asynchronous Event Notification)
3085 */
3086 seq_num = instance->last_seq_num;
3087 class_locale.members.reserved = 0;
3088 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3089 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3090
3091 megasas_register_aen(instance, seq_num, class_locale.word);
3092 }
3093
3094 /**
3095 * Move the internal reset pending commands to a deferred queue.
3096 *
3097 * We move the commands pending at internal reset time to a
3098 * pending queue. This queue would be flushed after successful
3099 * completion of the internal reset sequence. if the internal reset
3100 * did not complete in time, the kernel reset handler would flush
3101 * these commands.
3102 **/
3103 static void
3104 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3105 {
3106 struct megasas_cmd *cmd;
3107 int i;
3108 u32 max_cmd = instance->max_fw_cmds;
3109 u32 defer_index;
3110 unsigned long flags;
3111
3112 defer_index = 0;
3113 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3114 for (i = 0; i < max_cmd; i++) {
3115 cmd = instance->cmd_list[i];
3116 if (cmd->sync_cmd == 1 || cmd->scmd) {
3117 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3118 "on the defer queue as internal\n",
3119 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3120
3121 if (!list_empty(&cmd->list)) {
3122 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3123 " moving this cmd:%p, %d %p, it was"
3124 "discovered on some list?\n",
3125 cmd, cmd->sync_cmd, cmd->scmd);
3126
3127 list_del_init(&cmd->list);
3128 }
3129 defer_index++;
3130 list_add_tail(&cmd->list,
3131 &instance->internal_reset_pending_q);
3132 }
3133 }
3134 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3135 }
3136
3137
3138 static void
3139 process_fw_state_change_wq(struct work_struct *work)
3140 {
3141 struct megasas_instance *instance =
3142 container_of(work, struct megasas_instance, work_init);
3143 u32 wait;
3144 unsigned long flags;
3145
3146 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3147 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3148 instance->adprecovery);
3149 return ;
3150 }
3151
3152 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3153 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3154 "state, restarting it...\n");
3155
3156 instance->instancet->disable_intr(instance);
3157 atomic_set(&instance->fw_outstanding, 0);
3158
3159 atomic_set(&instance->fw_reset_no_pci_access, 1);
3160 instance->instancet->adp_reset(instance, instance->reg_set);
3161 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3162
3163 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3164 "initiating next stage...\n");
3165
3166 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3167 "state 2 starting...\n");
3168
3169 /*waitting for about 20 second before start the second init*/
3170 for (wait = 0; wait < 30; wait++) {
3171 msleep(1000);
3172 }
3173
3174 if (megasas_transition_to_ready(instance, 1)) {
3175 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3176
3177 megaraid_sas_kill_hba(instance);
3178 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
3179 return ;
3180 }
3181
3182 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3183 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3184 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3185 ) {
3186 *instance->consumer = *instance->producer;
3187 } else {
3188 *instance->consumer = 0;
3189 *instance->producer = 0;
3190 }
3191
3192 megasas_issue_init_mfi(instance);
3193
3194 spin_lock_irqsave(&instance->hba_lock, flags);
3195 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3196 spin_unlock_irqrestore(&instance->hba_lock, flags);
3197 instance->instancet->enable_intr(instance);
3198
3199 megasas_issue_pending_cmds_again(instance);
3200 instance->issuepend_done = 1;
3201 }
3202 return ;
3203 }
3204
3205 /**
3206 * megasas_deplete_reply_queue - Processes all completed commands
3207 * @instance: Adapter soft state
3208 * @alt_status: Alternate status to be returned to
3209 * SCSI mid-layer instead of the status
3210 * returned by the FW
3211 * Note: this must be called with hba lock held
3212 */
3213 static int
3214 megasas_deplete_reply_queue(struct megasas_instance *instance,
3215 u8 alt_status)
3216 {
3217 u32 mfiStatus;
3218 u32 fw_state;
3219
3220 if ((mfiStatus = instance->instancet->check_reset(instance,
3221 instance->reg_set)) == 1) {
3222 return IRQ_HANDLED;
3223 }
3224
3225 if ((mfiStatus = instance->instancet->clear_intr(
3226 instance->reg_set)
3227 ) == 0) {
3228 /* Hardware may not set outbound_intr_status in MSI-X mode */
3229 if (!instance->msix_vectors)
3230 return IRQ_NONE;
3231 }
3232
3233 instance->mfiStatus = mfiStatus;
3234
3235 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3236 fw_state = instance->instancet->read_fw_status_reg(
3237 instance->reg_set) & MFI_STATE_MASK;
3238
3239 if (fw_state != MFI_STATE_FAULT) {
3240 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3241 fw_state);
3242 }
3243
3244 if ((fw_state == MFI_STATE_FAULT) &&
3245 (instance->disableOnlineCtrlReset == 0)) {
3246 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3247
3248 if ((instance->pdev->device ==
3249 PCI_DEVICE_ID_LSI_SAS1064R) ||
3250 (instance->pdev->device ==
3251 PCI_DEVICE_ID_DELL_PERC5) ||
3252 (instance->pdev->device ==
3253 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3254
3255 *instance->consumer =
3256 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3257 }
3258
3259
3260 instance->instancet->disable_intr(instance);
3261 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3262 instance->issuepend_done = 0;
3263
3264 atomic_set(&instance->fw_outstanding, 0);
3265 megasas_internal_reset_defer_cmds(instance);
3266
3267 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3268 fw_state, instance->adprecovery);
3269
3270 schedule_work(&instance->work_init);
3271 return IRQ_HANDLED;
3272
3273 } else {
3274 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3275 fw_state, instance->disableOnlineCtrlReset);
3276 }
3277 }
3278
3279 tasklet_schedule(&instance->isr_tasklet);
3280 return IRQ_HANDLED;
3281 }
3282 /**
3283 * megasas_isr - isr entry point
3284 */
3285 static irqreturn_t megasas_isr(int irq, void *devp)
3286 {
3287 struct megasas_irq_context *irq_context = devp;
3288 struct megasas_instance *instance = irq_context->instance;
3289 unsigned long flags;
3290 irqreturn_t rc;
3291
3292 if (atomic_read(&instance->fw_reset_no_pci_access))
3293 return IRQ_HANDLED;
3294
3295 spin_lock_irqsave(&instance->hba_lock, flags);
3296 rc = megasas_deplete_reply_queue(instance, DID_OK);
3297 spin_unlock_irqrestore(&instance->hba_lock, flags);
3298
3299 return rc;
3300 }
3301
3302 /**
3303 * megasas_transition_to_ready - Move the FW to READY state
3304 * @instance: Adapter soft state
3305 *
3306 * During the initialization, FW passes can potentially be in any one of
3307 * several possible states. If the FW in operational, waiting-for-handshake
3308 * states, driver must take steps to bring it to ready state. Otherwise, it
3309 * has to wait for the ready state.
3310 */
3311 int
3312 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3313 {
3314 int i;
3315 u8 max_wait;
3316 u32 fw_state;
3317 u32 cur_state;
3318 u32 abs_state, curr_abs_state;
3319
3320 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3321 fw_state = abs_state & MFI_STATE_MASK;
3322
3323 if (fw_state != MFI_STATE_READY)
3324 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3325 " state\n");
3326
3327 while (fw_state != MFI_STATE_READY) {
3328
3329 switch (fw_state) {
3330
3331 case MFI_STATE_FAULT:
3332 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
3333 if (ocr) {
3334 max_wait = MEGASAS_RESET_WAIT_TIME;
3335 cur_state = MFI_STATE_FAULT;
3336 break;
3337 } else
3338 return -ENODEV;
3339
3340 case MFI_STATE_WAIT_HANDSHAKE:
3341 /*
3342 * Set the CLR bit in inbound doorbell
3343 */
3344 if ((instance->pdev->device ==
3345 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3346 (instance->pdev->device ==
3347 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3348 (instance->pdev->device ==
3349 PCI_DEVICE_ID_LSI_FUSION) ||
3350 (instance->pdev->device ==
3351 PCI_DEVICE_ID_LSI_PLASMA) ||
3352 (instance->pdev->device ==
3353 PCI_DEVICE_ID_LSI_INVADER) ||
3354 (instance->pdev->device ==
3355 PCI_DEVICE_ID_LSI_FURY)) {
3356 writel(
3357 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3358 &instance->reg_set->doorbell);
3359 } else {
3360 writel(
3361 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3362 &instance->reg_set->inbound_doorbell);
3363 }
3364
3365 max_wait = MEGASAS_RESET_WAIT_TIME;
3366 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3367 break;
3368
3369 case MFI_STATE_BOOT_MESSAGE_PENDING:
3370 if ((instance->pdev->device ==
3371 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3372 (instance->pdev->device ==
3373 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3374 (instance->pdev->device ==
3375 PCI_DEVICE_ID_LSI_FUSION) ||
3376 (instance->pdev->device ==
3377 PCI_DEVICE_ID_LSI_PLASMA) ||
3378 (instance->pdev->device ==
3379 PCI_DEVICE_ID_LSI_INVADER) ||
3380 (instance->pdev->device ==
3381 PCI_DEVICE_ID_LSI_FURY)) {
3382 writel(MFI_INIT_HOTPLUG,
3383 &instance->reg_set->doorbell);
3384 } else
3385 writel(MFI_INIT_HOTPLUG,
3386 &instance->reg_set->inbound_doorbell);
3387
3388 max_wait = MEGASAS_RESET_WAIT_TIME;
3389 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3390 break;
3391
3392 case MFI_STATE_OPERATIONAL:
3393 /*
3394 * Bring it to READY state; assuming max wait 10 secs
3395 */
3396 instance->instancet->disable_intr(instance);
3397 if ((instance->pdev->device ==
3398 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3399 (instance->pdev->device ==
3400 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3401 (instance->pdev->device
3402 == PCI_DEVICE_ID_LSI_FUSION) ||
3403 (instance->pdev->device
3404 == PCI_DEVICE_ID_LSI_PLASMA) ||
3405 (instance->pdev->device
3406 == PCI_DEVICE_ID_LSI_INVADER) ||
3407 (instance->pdev->device
3408 == PCI_DEVICE_ID_LSI_FURY)) {
3409 writel(MFI_RESET_FLAGS,
3410 &instance->reg_set->doorbell);
3411 if ((instance->pdev->device ==
3412 PCI_DEVICE_ID_LSI_FUSION) ||
3413 (instance->pdev->device ==
3414 PCI_DEVICE_ID_LSI_PLASMA) ||
3415 (instance->pdev->device ==
3416 PCI_DEVICE_ID_LSI_INVADER) ||
3417 (instance->pdev->device ==
3418 PCI_DEVICE_ID_LSI_FURY)) {
3419 for (i = 0; i < (10 * 1000); i += 20) {
3420 if (readl(
3421 &instance->
3422 reg_set->
3423 doorbell) & 1)
3424 msleep(20);
3425 else
3426 break;
3427 }
3428 }
3429 } else
3430 writel(MFI_RESET_FLAGS,
3431 &instance->reg_set->inbound_doorbell);
3432
3433 max_wait = MEGASAS_RESET_WAIT_TIME;
3434 cur_state = MFI_STATE_OPERATIONAL;
3435 break;
3436
3437 case MFI_STATE_UNDEFINED:
3438 /*
3439 * This state should not last for more than 2 seconds
3440 */
3441 max_wait = MEGASAS_RESET_WAIT_TIME;
3442 cur_state = MFI_STATE_UNDEFINED;
3443 break;
3444
3445 case MFI_STATE_BB_INIT:
3446 max_wait = MEGASAS_RESET_WAIT_TIME;
3447 cur_state = MFI_STATE_BB_INIT;
3448 break;
3449
3450 case MFI_STATE_FW_INIT:
3451 max_wait = MEGASAS_RESET_WAIT_TIME;
3452 cur_state = MFI_STATE_FW_INIT;
3453 break;
3454
3455 case MFI_STATE_FW_INIT_2:
3456 max_wait = MEGASAS_RESET_WAIT_TIME;
3457 cur_state = MFI_STATE_FW_INIT_2;
3458 break;
3459
3460 case MFI_STATE_DEVICE_SCAN:
3461 max_wait = MEGASAS_RESET_WAIT_TIME;
3462 cur_state = MFI_STATE_DEVICE_SCAN;
3463 break;
3464
3465 case MFI_STATE_FLUSH_CACHE:
3466 max_wait = MEGASAS_RESET_WAIT_TIME;
3467 cur_state = MFI_STATE_FLUSH_CACHE;
3468 break;
3469
3470 default:
3471 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3472 fw_state);
3473 return -ENODEV;
3474 }
3475
3476 /*
3477 * The cur_state should not last for more than max_wait secs
3478 */
3479 for (i = 0; i < (max_wait * 1000); i++) {
3480 curr_abs_state = instance->instancet->
3481 read_fw_status_reg(instance->reg_set);
3482
3483 if (abs_state == curr_abs_state) {
3484 msleep(1);
3485 } else
3486 break;
3487 }
3488
3489 /*
3490 * Return error if fw_state hasn't changed after max_wait
3491 */
3492 if (curr_abs_state == abs_state) {
3493 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3494 "in %d secs\n", fw_state, max_wait);
3495 return -ENODEV;
3496 }
3497
3498 abs_state = curr_abs_state;
3499 fw_state = curr_abs_state & MFI_STATE_MASK;
3500 }
3501 printk(KERN_INFO "megasas: FW now in Ready state\n");
3502
3503 return 0;
3504 }
3505
3506 /**
3507 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3508 * @instance: Adapter soft state
3509 */
3510 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3511 {
3512 int i;
3513 u32 max_cmd = instance->max_mfi_cmds;
3514 struct megasas_cmd *cmd;
3515
3516 if (!instance->frame_dma_pool)
3517 return;
3518
3519 /*
3520 * Return all frames to pool
3521 */
3522 for (i = 0; i < max_cmd; i++) {
3523
3524 cmd = instance->cmd_list[i];
3525
3526 if (cmd->frame)
3527 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3528 cmd->frame_phys_addr);
3529
3530 if (cmd->sense)
3531 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3532 cmd->sense_phys_addr);
3533 }
3534
3535 /*
3536 * Now destroy the pool itself
3537 */
3538 pci_pool_destroy(instance->frame_dma_pool);
3539 pci_pool_destroy(instance->sense_dma_pool);
3540
3541 instance->frame_dma_pool = NULL;
3542 instance->sense_dma_pool = NULL;
3543 }
3544
3545 /**
3546 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3547 * @instance: Adapter soft state
3548 *
3549 * Each command packet has an embedded DMA memory buffer that is used for
3550 * filling MFI frame and the SG list that immediately follows the frame. This
3551 * function creates those DMA memory buffers for each command packet by using
3552 * PCI pool facility.
3553 */
3554 static int megasas_create_frame_pool(struct megasas_instance *instance)
3555 {
3556 int i;
3557 u32 max_cmd;
3558 u32 sge_sz;
3559 u32 sgl_sz;
3560 u32 total_sz;
3561 u32 frame_count;
3562 struct megasas_cmd *cmd;
3563
3564 max_cmd = instance->max_mfi_cmds;
3565
3566 /*
3567 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3568 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3569 */
3570 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3571 sizeof(struct megasas_sge32);
3572
3573 if (instance->flag_ieee) {
3574 sge_sz = sizeof(struct megasas_sge_skinny);
3575 }
3576
3577 /*
3578 * Calculated the number of 64byte frames required for SGL
3579 */
3580 sgl_sz = sge_sz * instance->max_num_sge;
3581 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
3582 frame_count = 15;
3583
3584 /*
3585 * We need one extra frame for the MFI command
3586 */
3587 frame_count++;
3588
3589 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3590 /*
3591 * Use DMA pool facility provided by PCI layer
3592 */
3593 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3594 instance->pdev, total_sz, 64,
3595 0);
3596
3597 if (!instance->frame_dma_pool) {
3598 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3599 return -ENOMEM;
3600 }
3601
3602 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3603 instance->pdev, 128, 4, 0);
3604
3605 if (!instance->sense_dma_pool) {
3606 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3607
3608 pci_pool_destroy(instance->frame_dma_pool);
3609 instance->frame_dma_pool = NULL;
3610
3611 return -ENOMEM;
3612 }
3613
3614 /*
3615 * Allocate and attach a frame to each of the commands in cmd_list.
3616 * By making cmd->index as the context instead of the &cmd, we can
3617 * always use 32bit context regardless of the architecture
3618 */
3619 for (i = 0; i < max_cmd; i++) {
3620
3621 cmd = instance->cmd_list[i];
3622
3623 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3624 GFP_KERNEL, &cmd->frame_phys_addr);
3625
3626 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3627 GFP_KERNEL, &cmd->sense_phys_addr);
3628
3629 /*
3630 * megasas_teardown_frame_pool() takes care of freeing
3631 * whatever has been allocated
3632 */
3633 if (!cmd->frame || !cmd->sense) {
3634 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3635 megasas_teardown_frame_pool(instance);
3636 return -ENOMEM;
3637 }
3638
3639 memset(cmd->frame, 0, total_sz);
3640 cmd->frame->io.context = cpu_to_le32(cmd->index);
3641 cmd->frame->io.pad_0 = 0;
3642 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3643 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
3644 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
3645 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
3646 (reset_devices))
3647 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3648 }
3649
3650 return 0;
3651 }
3652
3653 /**
3654 * megasas_free_cmds - Free all the cmds in the free cmd pool
3655 * @instance: Adapter soft state
3656 */
3657 void megasas_free_cmds(struct megasas_instance *instance)
3658 {
3659 int i;
3660 /* First free the MFI frame pool */
3661 megasas_teardown_frame_pool(instance);
3662
3663 /* Free all the commands in the cmd_list */
3664 for (i = 0; i < instance->max_mfi_cmds; i++)
3665
3666 kfree(instance->cmd_list[i]);
3667
3668 /* Free the cmd_list buffer itself */
3669 kfree(instance->cmd_list);
3670 instance->cmd_list = NULL;
3671
3672 INIT_LIST_HEAD(&instance->cmd_pool);
3673 }
3674
3675 /**
3676 * megasas_alloc_cmds - Allocates the command packets
3677 * @instance: Adapter soft state
3678 *
3679 * Each command that is issued to the FW, whether IO commands from the OS or
3680 * internal commands like IOCTLs, are wrapped in local data structure called
3681 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3682 * the FW.
3683 *
3684 * Each frame has a 32-bit field called context (tag). This context is used
3685 * to get back the megasas_cmd from the frame when a frame gets completed in
3686 * the ISR. Typically the address of the megasas_cmd itself would be used as
3687 * the context. But we wanted to keep the differences between 32 and 64 bit
3688 * systems to the mininum. We always use 32 bit integers for the context. In
3689 * this driver, the 32 bit values are the indices into an array cmd_list.
3690 * This array is used only to look up the megasas_cmd given the context. The
3691 * free commands themselves are maintained in a linked list called cmd_pool.
3692 */
3693 int megasas_alloc_cmds(struct megasas_instance *instance)
3694 {
3695 int i;
3696 int j;
3697 u32 max_cmd;
3698 struct megasas_cmd *cmd;
3699 struct fusion_context *fusion;
3700
3701 fusion = instance->ctrl_context;
3702 max_cmd = instance->max_mfi_cmds;
3703
3704 /*
3705 * instance->cmd_list is an array of struct megasas_cmd pointers.
3706 * Allocate the dynamic array first and then allocate individual
3707 * commands.
3708 */
3709 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3710
3711 if (!instance->cmd_list) {
3712 printk(KERN_DEBUG "megasas: out of memory\n");
3713 return -ENOMEM;
3714 }
3715
3716 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3717
3718 for (i = 0; i < max_cmd; i++) {
3719 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3720 GFP_KERNEL);
3721
3722 if (!instance->cmd_list[i]) {
3723
3724 for (j = 0; j < i; j++)
3725 kfree(instance->cmd_list[j]);
3726
3727 kfree(instance->cmd_list);
3728 instance->cmd_list = NULL;
3729
3730 return -ENOMEM;
3731 }
3732 }
3733
3734 for (i = 0; i < max_cmd; i++) {
3735 cmd = instance->cmd_list[i];
3736 memset(cmd, 0, sizeof(struct megasas_cmd));
3737 cmd->index = i;
3738 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
3739 cmd->scmd = NULL;
3740 cmd->instance = instance;
3741
3742 list_add_tail(&cmd->list, &instance->cmd_pool);
3743 }
3744
3745 /*
3746 * Create a frame pool and assign one frame to each cmd
3747 */
3748 if (megasas_create_frame_pool(instance)) {
3749 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3750 megasas_free_cmds(instance);
3751 }
3752
3753 return 0;
3754 }
3755
3756 /*
3757 * megasas_get_pd_list_info - Returns FW's pd_list structure
3758 * @instance: Adapter soft state
3759 * @pd_list: pd_list structure
3760 *
3761 * Issues an internal command (DCMD) to get the FW's controller PD
3762 * list structure. This information is mainly used to find out SYSTEM
3763 * supported by the FW.
3764 */
3765 static int
3766 megasas_get_pd_list(struct megasas_instance *instance)
3767 {
3768 int ret = 0, pd_index = 0;
3769 struct megasas_cmd *cmd;
3770 struct megasas_dcmd_frame *dcmd;
3771 struct MR_PD_LIST *ci;
3772 struct MR_PD_ADDRESS *pd_addr;
3773 dma_addr_t ci_h = 0;
3774
3775 cmd = megasas_get_cmd(instance);
3776
3777 if (!cmd) {
3778 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3779 return -ENOMEM;
3780 }
3781
3782 dcmd = &cmd->frame->dcmd;
3783
3784 ci = pci_alloc_consistent(instance->pdev,
3785 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3786
3787 if (!ci) {
3788 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3789 megasas_return_cmd(instance, cmd);
3790 return -ENOMEM;
3791 }
3792
3793 memset(ci, 0, sizeof(*ci));
3794 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3795
3796 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3797 dcmd->mbox.b[1] = 0;
3798 dcmd->cmd = MFI_CMD_DCMD;
3799 dcmd->cmd_status = 0xFF;
3800 dcmd->sge_count = 1;
3801 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3802 dcmd->timeout = 0;
3803 dcmd->pad_0 = 0;
3804 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3805 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3806 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3807 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3808
3809 if (instance->ctrl_context && !instance->mask_interrupts)
3810 ret = megasas_issue_blocked_cmd(instance, cmd,
3811 MEGASAS_BLOCKED_CMD_TIMEOUT);
3812 else
3813 ret = megasas_issue_polled(instance, cmd);
3814
3815 /*
3816 * the following function will get the instance PD LIST.
3817 */
3818
3819 pd_addr = ci->addr;
3820
3821 if ( ret == 0 &&
3822 (le32_to_cpu(ci->count) <
3823 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3824
3825 memset(instance->local_pd_list, 0,
3826 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3827
3828 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3829
3830 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3831 le16_to_cpu(pd_addr->deviceId);
3832 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3833 pd_addr->scsiDevType;
3834 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3835 MR_PD_STATE_SYSTEM;
3836 pd_addr++;
3837 }
3838 memcpy(instance->pd_list, instance->local_pd_list,
3839 sizeof(instance->pd_list));
3840 }
3841
3842 pci_free_consistent(instance->pdev,
3843 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3844 ci, ci_h);
3845
3846 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3847 megasas_return_mfi_mpt_pthr(instance, cmd,
3848 cmd->mpt_pthr_cmd_blocked);
3849 else
3850 megasas_return_cmd(instance, cmd);
3851
3852 return ret;
3853 }
3854
3855 /*
3856 * megasas_get_ld_list_info - Returns FW's ld_list structure
3857 * @instance: Adapter soft state
3858 * @ld_list: ld_list structure
3859 *
3860 * Issues an internal command (DCMD) to get the FW's controller PD
3861 * list structure. This information is mainly used to find out SYSTEM
3862 * supported by the FW.
3863 */
3864 static int
3865 megasas_get_ld_list(struct megasas_instance *instance)
3866 {
3867 int ret = 0, ld_index = 0, ids = 0;
3868 struct megasas_cmd *cmd;
3869 struct megasas_dcmd_frame *dcmd;
3870 struct MR_LD_LIST *ci;
3871 dma_addr_t ci_h = 0;
3872 u32 ld_count;
3873
3874 cmd = megasas_get_cmd(instance);
3875
3876 if (!cmd) {
3877 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3878 return -ENOMEM;
3879 }
3880
3881 dcmd = &cmd->frame->dcmd;
3882
3883 ci = pci_alloc_consistent(instance->pdev,
3884 sizeof(struct MR_LD_LIST),
3885 &ci_h);
3886
3887 if (!ci) {
3888 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3889 megasas_return_cmd(instance, cmd);
3890 return -ENOMEM;
3891 }
3892
3893 memset(ci, 0, sizeof(*ci));
3894 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3895
3896 if (instance->supportmax256vd)
3897 dcmd->mbox.b[0] = 1;
3898 dcmd->cmd = MFI_CMD_DCMD;
3899 dcmd->cmd_status = 0xFF;
3900 dcmd->sge_count = 1;
3901 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3902 dcmd->timeout = 0;
3903 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3904 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3905 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3906 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
3907 dcmd->pad_0 = 0;
3908
3909 if (instance->ctrl_context && !instance->mask_interrupts)
3910 ret = megasas_issue_blocked_cmd(instance, cmd,
3911 MEGASAS_BLOCKED_CMD_TIMEOUT);
3912 else
3913 ret = megasas_issue_polled(instance, cmd);
3914
3915
3916 ld_count = le32_to_cpu(ci->ldCount);
3917
3918 /* the following function will get the instance PD LIST */
3919
3920 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3921 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
3922
3923 for (ld_index = 0; ld_index < ld_count; ld_index++) {
3924 if (ci->ldList[ld_index].state != 0) {
3925 ids = ci->ldList[ld_index].ref.targetId;
3926 instance->ld_ids[ids] =
3927 ci->ldList[ld_index].ref.targetId;
3928 }
3929 }
3930 }
3931
3932 pci_free_consistent(instance->pdev,
3933 sizeof(struct MR_LD_LIST),
3934 ci,
3935 ci_h);
3936
3937 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3938 megasas_return_mfi_mpt_pthr(instance, cmd,
3939 cmd->mpt_pthr_cmd_blocked);
3940 else
3941 megasas_return_cmd(instance, cmd);
3942 return ret;
3943 }
3944
3945 /**
3946 * megasas_ld_list_query - Returns FW's ld_list structure
3947 * @instance: Adapter soft state
3948 * @ld_list: ld_list structure
3949 *
3950 * Issues an internal command (DCMD) to get the FW's controller PD
3951 * list structure. This information is mainly used to find out SYSTEM
3952 * supported by the FW.
3953 */
3954 static int
3955 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3956 {
3957 int ret = 0, ld_index = 0, ids = 0;
3958 struct megasas_cmd *cmd;
3959 struct megasas_dcmd_frame *dcmd;
3960 struct MR_LD_TARGETID_LIST *ci;
3961 dma_addr_t ci_h = 0;
3962 u32 tgtid_count;
3963
3964 cmd = megasas_get_cmd(instance);
3965
3966 if (!cmd) {
3967 printk(KERN_WARNING
3968 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3969 return -ENOMEM;
3970 }
3971
3972 dcmd = &cmd->frame->dcmd;
3973
3974 ci = pci_alloc_consistent(instance->pdev,
3975 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3976
3977 if (!ci) {
3978 printk(KERN_WARNING
3979 "megasas: Failed to alloc mem for ld_list_query\n");
3980 megasas_return_cmd(instance, cmd);
3981 return -ENOMEM;
3982 }
3983
3984 memset(ci, 0, sizeof(*ci));
3985 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3986
3987 dcmd->mbox.b[0] = query_type;
3988 if (instance->supportmax256vd)
3989 dcmd->mbox.b[2] = 1;
3990
3991 dcmd->cmd = MFI_CMD_DCMD;
3992 dcmd->cmd_status = 0xFF;
3993 dcmd->sge_count = 1;
3994 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3995 dcmd->timeout = 0;
3996 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3997 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3998 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3999 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4000 dcmd->pad_0 = 0;
4001
4002 if (instance->ctrl_context && !instance->mask_interrupts)
4003 ret = megasas_issue_blocked_cmd(instance, cmd,
4004 MEGASAS_BLOCKED_CMD_TIMEOUT);
4005 else
4006 ret = megasas_issue_polled(instance, cmd);
4007
4008 tgtid_count = le32_to_cpu(ci->count);
4009
4010 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
4011 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4012 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4013 ids = ci->targetId[ld_index];
4014 instance->ld_ids[ids] = ci->targetId[ld_index];
4015 }
4016
4017 }
4018
4019 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4020 ci, ci_h);
4021
4022 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4023 megasas_return_mfi_mpt_pthr(instance, cmd,
4024 cmd->mpt_pthr_cmd_blocked);
4025 else
4026 megasas_return_cmd(instance, cmd);
4027
4028 return ret;
4029 }
4030
4031 /**
4032 * megasas_get_controller_info - Returns FW's controller structure
4033 * @instance: Adapter soft state
4034 * @ctrl_info: Controller information structure
4035 *
4036 * Issues an internal command (DCMD) to get the FW's controller structure.
4037 * This information is mainly used to find out the maximum IO transfer per
4038 * command supported by the FW.
4039 */
4040 int
4041 megasas_get_ctrl_info(struct megasas_instance *instance,
4042 struct megasas_ctrl_info *ctrl_info)
4043 {
4044 int ret = 0;
4045 struct megasas_cmd *cmd;
4046 struct megasas_dcmd_frame *dcmd;
4047 struct megasas_ctrl_info *ci;
4048 dma_addr_t ci_h = 0;
4049
4050 cmd = megasas_get_cmd(instance);
4051
4052 if (!cmd) {
4053 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4054 return -ENOMEM;
4055 }
4056
4057 dcmd = &cmd->frame->dcmd;
4058
4059 ci = pci_alloc_consistent(instance->pdev,
4060 sizeof(struct megasas_ctrl_info), &ci_h);
4061
4062 if (!ci) {
4063 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4064 megasas_return_cmd(instance, cmd);
4065 return -ENOMEM;
4066 }
4067
4068 memset(ci, 0, sizeof(*ci));
4069 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4070
4071 dcmd->cmd = MFI_CMD_DCMD;
4072 dcmd->cmd_status = 0xFF;
4073 dcmd->sge_count = 1;
4074 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4075 dcmd->timeout = 0;
4076 dcmd->pad_0 = 0;
4077 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4078 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4079 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4080 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4081 dcmd->mbox.b[0] = 1;
4082
4083 if (instance->ctrl_context && !instance->mask_interrupts)
4084 ret = megasas_issue_blocked_cmd(instance, cmd,
4085 MEGASAS_BLOCKED_CMD_TIMEOUT);
4086 else
4087 ret = megasas_issue_polled(instance, cmd);
4088
4089 if (!ret)
4090 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4091
4092 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4093 ci, ci_h);
4094
4095 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4096 megasas_return_mfi_mpt_pthr(instance, cmd,
4097 cmd->mpt_pthr_cmd_blocked);
4098 else
4099 megasas_return_cmd(instance, cmd);
4100 return ret;
4101 }
4102
4103 /*
4104 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4105 * to firmware
4106 *
4107 * @instance: Adapter soft state
4108 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4109 MR_CRASH_BUF_TURN_OFF = 0
4110 MR_CRASH_BUF_TURN_ON = 1
4111 * @return 0 on success non-zero on failure.
4112 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4113 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4114 * that driver supports crash dump feature. This DCMD will be sent only if
4115 * crash dump feature is supported by the FW.
4116 *
4117 */
4118 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4119 u8 crash_buf_state)
4120 {
4121 int ret = 0;
4122 struct megasas_cmd *cmd;
4123 struct megasas_dcmd_frame *dcmd;
4124
4125 cmd = megasas_get_cmd(instance);
4126
4127 if (!cmd) {
4128 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4129 return -ENOMEM;
4130 }
4131
4132
4133 dcmd = &cmd->frame->dcmd;
4134
4135 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4136 dcmd->mbox.b[0] = crash_buf_state;
4137 dcmd->cmd = MFI_CMD_DCMD;
4138 dcmd->cmd_status = 0xFF;
4139 dcmd->sge_count = 1;
4140 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4141 dcmd->timeout = 0;
4142 dcmd->pad_0 = 0;
4143 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4144 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4145 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4146 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4147
4148 if (instance->ctrl_context && !instance->mask_interrupts)
4149 ret = megasas_issue_blocked_cmd(instance, cmd,
4150 MEGASAS_BLOCKED_CMD_TIMEOUT);
4151 else
4152 ret = megasas_issue_polled(instance, cmd);
4153
4154 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4155 megasas_return_mfi_mpt_pthr(instance, cmd,
4156 cmd->mpt_pthr_cmd_blocked);
4157 else
4158 megasas_return_cmd(instance, cmd);
4159 return ret;
4160 }
4161
4162 /**
4163 * megasas_issue_init_mfi - Initializes the FW
4164 * @instance: Adapter soft state
4165 *
4166 * Issues the INIT MFI cmd
4167 */
4168 static int
4169 megasas_issue_init_mfi(struct megasas_instance *instance)
4170 {
4171 u32 context;
4172
4173 struct megasas_cmd *cmd;
4174
4175 struct megasas_init_frame *init_frame;
4176 struct megasas_init_queue_info *initq_info;
4177 dma_addr_t init_frame_h;
4178 dma_addr_t initq_info_h;
4179
4180 /*
4181 * Prepare a init frame. Note the init frame points to queue info
4182 * structure. Each frame has SGL allocated after first 64 bytes. For
4183 * this frame - since we don't need any SGL - we use SGL's space as
4184 * queue info structure
4185 *
4186 * We will not get a NULL command below. We just created the pool.
4187 */
4188 cmd = megasas_get_cmd(instance);
4189
4190 init_frame = (struct megasas_init_frame *)cmd->frame;
4191 initq_info = (struct megasas_init_queue_info *)
4192 ((unsigned long)init_frame + 64);
4193
4194 init_frame_h = cmd->frame_phys_addr;
4195 initq_info_h = init_frame_h + 64;
4196
4197 context = init_frame->context;
4198 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4199 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4200 init_frame->context = context;
4201
4202 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4203 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4204
4205 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4206 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4207
4208 init_frame->cmd = MFI_CMD_INIT;
4209 init_frame->cmd_status = 0xFF;
4210 init_frame->queue_info_new_phys_addr_lo =
4211 cpu_to_le32(lower_32_bits(initq_info_h));
4212 init_frame->queue_info_new_phys_addr_hi =
4213 cpu_to_le32(upper_32_bits(initq_info_h));
4214
4215 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4216
4217 /*
4218 * disable the intr before firing the init frame to FW
4219 */
4220 instance->instancet->disable_intr(instance);
4221
4222 /*
4223 * Issue the init frame in polled mode
4224 */
4225
4226 if (megasas_issue_polled(instance, cmd)) {
4227 printk(KERN_ERR "megasas: Failed to init firmware\n");
4228 megasas_return_cmd(instance, cmd);
4229 goto fail_fw_init;
4230 }
4231
4232 megasas_return_cmd(instance, cmd);
4233
4234 return 0;
4235
4236 fail_fw_init:
4237 return -EINVAL;
4238 }
4239
4240 static u32
4241 megasas_init_adapter_mfi(struct megasas_instance *instance)
4242 {
4243 struct megasas_register_set __iomem *reg_set;
4244 u32 context_sz;
4245 u32 reply_q_sz;
4246
4247 reg_set = instance->reg_set;
4248
4249 /*
4250 * Get various operational parameters from status register
4251 */
4252 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4253 /*
4254 * Reduce the max supported cmds by 1. This is to ensure that the
4255 * reply_q_sz (1 more than the max cmd that driver may send)
4256 * does not exceed max cmds that the FW can support
4257 */
4258 instance->max_fw_cmds = instance->max_fw_cmds-1;
4259 instance->max_mfi_cmds = instance->max_fw_cmds;
4260 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4261 0x10;
4262 /*
4263 * Create a pool of commands
4264 */
4265 if (megasas_alloc_cmds(instance))
4266 goto fail_alloc_cmds;
4267
4268 /*
4269 * Allocate memory for reply queue. Length of reply queue should
4270 * be _one_ more than the maximum commands handled by the firmware.
4271 *
4272 * Note: When FW completes commands, it places corresponding contex
4273 * values in this circular reply queue. This circular queue is a fairly
4274 * typical producer-consumer queue. FW is the producer (of completed
4275 * commands) and the driver is the consumer.
4276 */
4277 context_sz = sizeof(u32);
4278 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4279
4280 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4281 reply_q_sz,
4282 &instance->reply_queue_h);
4283
4284 if (!instance->reply_queue) {
4285 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4286 goto fail_reply_queue;
4287 }
4288
4289 if (megasas_issue_init_mfi(instance))
4290 goto fail_fw_init;
4291
4292 if (megasas_get_ctrl_info(instance, instance->ctrl_info)) {
4293 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4294 "Fail from %s %d\n", instance->unique_id,
4295 __func__, __LINE__);
4296 goto fail_fw_init;
4297 }
4298
4299 instance->fw_support_ieee = 0;
4300 instance->fw_support_ieee =
4301 (instance->instancet->read_fw_status_reg(reg_set) &
4302 0x04000000);
4303
4304 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4305 instance->fw_support_ieee);
4306
4307 if (instance->fw_support_ieee)
4308 instance->flag_ieee = 1;
4309
4310 return 0;
4311
4312 fail_fw_init:
4313
4314 pci_free_consistent(instance->pdev, reply_q_sz,
4315 instance->reply_queue, instance->reply_queue_h);
4316 fail_reply_queue:
4317 megasas_free_cmds(instance);
4318
4319 fail_alloc_cmds:
4320 return 1;
4321 }
4322
4323 /**
4324 * megasas_init_fw - Initializes the FW
4325 * @instance: Adapter soft state
4326 *
4327 * This is the main function for initializing firmware
4328 */
4329
4330 static int megasas_init_fw(struct megasas_instance *instance)
4331 {
4332 u32 max_sectors_1;
4333 u32 max_sectors_2;
4334 u32 tmp_sectors, msix_enable, scratch_pad_2;
4335 resource_size_t base_addr;
4336 struct megasas_register_set __iomem *reg_set;
4337 struct megasas_ctrl_info *ctrl_info = NULL;
4338 unsigned long bar_list;
4339 int i, loop, fw_msix_count = 0;
4340 struct IOV_111 *iovPtr;
4341
4342 /* Find first memory bar */
4343 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4344 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
4345 if (pci_request_selected_regions(instance->pdev, instance->bar,
4346 "megasas: LSI")) {
4347 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4348 return -EBUSY;
4349 }
4350
4351 base_addr = pci_resource_start(instance->pdev, instance->bar);
4352 instance->reg_set = ioremap_nocache(base_addr, 8192);
4353
4354 if (!instance->reg_set) {
4355 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4356 goto fail_ioremap;
4357 }
4358
4359 reg_set = instance->reg_set;
4360
4361 switch (instance->pdev->device) {
4362 case PCI_DEVICE_ID_LSI_FUSION:
4363 case PCI_DEVICE_ID_LSI_PLASMA:
4364 case PCI_DEVICE_ID_LSI_INVADER:
4365 case PCI_DEVICE_ID_LSI_FURY:
4366 instance->instancet = &megasas_instance_template_fusion;
4367 break;
4368 case PCI_DEVICE_ID_LSI_SAS1078R:
4369 case PCI_DEVICE_ID_LSI_SAS1078DE:
4370 instance->instancet = &megasas_instance_template_ppc;
4371 break;
4372 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4373 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4374 instance->instancet = &megasas_instance_template_gen2;
4375 break;
4376 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4377 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4378 instance->instancet = &megasas_instance_template_skinny;
4379 break;
4380 case PCI_DEVICE_ID_LSI_SAS1064R:
4381 case PCI_DEVICE_ID_DELL_PERC5:
4382 default:
4383 instance->instancet = &megasas_instance_template_xscale;
4384 break;
4385 }
4386
4387 if (megasas_transition_to_ready(instance, 0)) {
4388 atomic_set(&instance->fw_reset_no_pci_access, 1);
4389 instance->instancet->adp_reset
4390 (instance, instance->reg_set);
4391 atomic_set(&instance->fw_reset_no_pci_access, 0);
4392 dev_info(&instance->pdev->dev,
4393 "megasas: FW restarted successfully from %s!\n",
4394 __func__);
4395
4396 /*waitting for about 30 second before retry*/
4397 ssleep(30);
4398
4399 if (megasas_transition_to_ready(instance, 0))
4400 goto fail_ready_state;
4401 }
4402
4403 /*
4404 * MSI-X host index 0 is common for all adapter.
4405 * It is used for all MPT based Adapters.
4406 */
4407 instance->reply_post_host_index_addr[0] =
4408 (u32 *)((u8 *)instance->reg_set +
4409 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4410
4411 /* Check if MSI-X is supported while in ready state */
4412 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4413 0x4000000) >> 0x1a;
4414 if (msix_enable && !msix_disable) {
4415 scratch_pad_2 = readl
4416 (&instance->reg_set->outbound_scratch_pad_2);
4417 /* Check max MSI-X vectors */
4418 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4419 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
4420 instance->msix_vectors = (scratch_pad_2
4421 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4422 fw_msix_count = instance->msix_vectors;
4423 if (msix_vectors)
4424 instance->msix_vectors =
4425 min(msix_vectors,
4426 instance->msix_vectors);
4427 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4428 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4429 /* Invader/Fury supports more than 8 MSI-X */
4430 instance->msix_vectors = ((scratch_pad_2
4431 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4432 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4433 fw_msix_count = instance->msix_vectors;
4434 /* Save 1-15 reply post index address to local memory
4435 * Index 0 is already saved from reg offset
4436 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4437 */
4438 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4439 instance->reply_post_host_index_addr[loop] =
4440 (u32 *)((u8 *)instance->reg_set +
4441 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4442 + (loop * 0x10));
4443 }
4444 if (msix_vectors)
4445 instance->msix_vectors = min(msix_vectors,
4446 instance->msix_vectors);
4447 } else
4448 instance->msix_vectors = 1;
4449 /* Don't bother allocating more MSI-X vectors than cpus */
4450 instance->msix_vectors = min(instance->msix_vectors,
4451 (unsigned int)num_online_cpus());
4452 for (i = 0; i < instance->msix_vectors; i++)
4453 instance->msixentry[i].entry = i;
4454 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4455 1, instance->msix_vectors);
4456 if (i > 0)
4457 instance->msix_vectors = i;
4458 else
4459 instance->msix_vectors = 0;
4460
4461 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
4462 "<%d> MSIX vector,Online CPUs: <%d>,"
4463 "Current MSIX <%d>\n", instance->host->host_no,
4464 fw_msix_count, (unsigned int)num_online_cpus(),
4465 instance->msix_vectors);
4466 }
4467
4468 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4469 GFP_KERNEL);
4470 if (instance->ctrl_info == NULL)
4471 goto fail_init_adapter;
4472
4473 /*
4474 * Below are default value for legacy Firmware.
4475 * non-fusion based controllers
4476 */
4477 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4478 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4479 /* Get operational params, sge flags, send init cmd to controller */
4480 if (instance->instancet->init_adapter(instance))
4481 goto fail_init_adapter;
4482
4483 printk(KERN_ERR "megasas: INIT adapter done\n");
4484
4485 /** for passthrough
4486 * the following function will get the PD LIST.
4487 */
4488
4489 memset(instance->pd_list, 0 ,
4490 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
4491 if (megasas_get_pd_list(instance) < 0) {
4492 printk(KERN_ERR "megasas: failed to get PD list\n");
4493 goto fail_init_adapter;
4494 }
4495
4496 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4497 if (megasas_ld_list_query(instance,
4498 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4499 megasas_get_ld_list(instance);
4500
4501 /*
4502 * Compute the max allowed sectors per IO: The controller info has two
4503 * limits on max sectors. Driver should use the minimum of these two.
4504 *
4505 * 1 << stripe_sz_ops.min = max sectors per strip
4506 *
4507 * Note that older firmwares ( < FW ver 30) didn't report information
4508 * to calculate max_sectors_1. So the number ended up as zero always.
4509 */
4510 tmp_sectors = 0;
4511 ctrl_info = instance->ctrl_info;
4512
4513 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4514 le16_to_cpu(ctrl_info->max_strips_per_io);
4515 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
4516
4517 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
4518
4519 /*Check whether controller is iMR or MR */
4520 if (ctrl_info->memory_size) {
4521 instance->is_imr = 0;
4522 dev_info(&instance->pdev->dev, "Controller type: MR,"
4523 "Memory size is: %dMB\n",
4524 le16_to_cpu(ctrl_info->memory_size));
4525 } else {
4526 instance->is_imr = 1;
4527 dev_info(&instance->pdev->dev,
4528 "Controller type: iMR\n");
4529 }
4530 /* OnOffProperties are converted into CPU arch*/
4531 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4532 instance->disableOnlineCtrlReset =
4533 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4534 /* adapterOperations2 are converted into CPU arch*/
4535 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4536 instance->mpio = ctrl_info->adapterOperations2.mpio;
4537 instance->UnevenSpanSupport =
4538 ctrl_info->adapterOperations2.supportUnevenSpans;
4539 if (instance->UnevenSpanSupport) {
4540 struct fusion_context *fusion = instance->ctrl_context;
4541
4542 dev_info(&instance->pdev->dev, "FW supports: "
4543 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4544 if (MR_ValidateMapInfo(instance))
4545 fusion->fast_path_io = 1;
4546 else
4547 fusion->fast_path_io = 0;
4548
4549 }
4550 if (ctrl_info->host_interface.SRIOV) {
4551 if (!ctrl_info->adapterOperations2.activePassive)
4552 instance->PlasmaFW111 = 1;
4553
4554 if (!instance->PlasmaFW111)
4555 instance->requestorId =
4556 ctrl_info->iov.requestorId;
4557 else {
4558 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4559 instance->requestorId = iovPtr->requestorId;
4560 }
4561 dev_warn(&instance->pdev->dev, "I am VF "
4562 "requestorId %d\n", instance->requestorId);
4563 }
4564
4565 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4566 instance->crash_dump_fw_support =
4567 ctrl_info->adapterOperations3.supportCrashDump;
4568 instance->crash_dump_drv_support =
4569 (instance->crash_dump_fw_support &&
4570 instance->crash_dump_buf);
4571 if (instance->crash_dump_drv_support) {
4572 dev_info(&instance->pdev->dev, "Firmware Crash dump "
4573 "feature is supported\n");
4574 megasas_set_crash_dump_params(instance,
4575 MR_CRASH_BUF_TURN_OFF);
4576
4577 } else {
4578 if (instance->crash_dump_buf)
4579 pci_free_consistent(instance->pdev,
4580 CRASH_DMA_BUF_SIZE,
4581 instance->crash_dump_buf,
4582 instance->crash_dump_h);
4583 instance->crash_dump_buf = NULL;
4584 }
4585 instance->max_sectors_per_req = instance->max_num_sge *
4586 PAGE_SIZE / 512;
4587 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4588 instance->max_sectors_per_req = tmp_sectors;
4589
4590 kfree(ctrl_info);
4591
4592 /* Check for valid throttlequeuedepth module parameter */
4593 if (instance->is_imr) {
4594 if (throttlequeuedepth > (instance->max_fw_cmds -
4595 MEGASAS_SKINNY_INT_CMDS))
4596 instance->throttlequeuedepth =
4597 MEGASAS_THROTTLE_QUEUE_DEPTH;
4598 else
4599 instance->throttlequeuedepth = throttlequeuedepth;
4600 } else {
4601 if (throttlequeuedepth > (instance->max_fw_cmds -
4602 MEGASAS_INT_CMDS))
4603 instance->throttlequeuedepth =
4604 MEGASAS_THROTTLE_QUEUE_DEPTH;
4605 else
4606 instance->throttlequeuedepth = throttlequeuedepth;
4607 }
4608
4609 /*
4610 * Setup tasklet for cmd completion
4611 */
4612
4613 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4614 (unsigned long)instance);
4615
4616 /* Launch SR-IOV heartbeat timer */
4617 if (instance->requestorId) {
4618 if (!megasas_sriov_start_heartbeat(instance, 1))
4619 megasas_start_timer(instance,
4620 &instance->sriov_heartbeat_timer,
4621 megasas_sriov_heartbeat_handler,
4622 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4623 else
4624 instance->skip_heartbeat_timer_del = 1;
4625 }
4626
4627 return 0;
4628
4629 fail_init_adapter:
4630 fail_ready_state:
4631 kfree(instance->ctrl_info);
4632 instance->ctrl_info = NULL;
4633 iounmap(instance->reg_set);
4634
4635 fail_ioremap:
4636 pci_release_selected_regions(instance->pdev, instance->bar);
4637
4638 return -EINVAL;
4639 }
4640
4641 /**
4642 * megasas_release_mfi - Reverses the FW initialization
4643 * @instance: Adapter soft state
4644 */
4645 static void megasas_release_mfi(struct megasas_instance *instance)
4646 {
4647 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
4648
4649 if (instance->reply_queue)
4650 pci_free_consistent(instance->pdev, reply_q_sz,
4651 instance->reply_queue, instance->reply_queue_h);
4652
4653 megasas_free_cmds(instance);
4654
4655 iounmap(instance->reg_set);
4656
4657 pci_release_selected_regions(instance->pdev, instance->bar);
4658 }
4659
4660 /**
4661 * megasas_get_seq_num - Gets latest event sequence numbers
4662 * @instance: Adapter soft state
4663 * @eli: FW event log sequence numbers information
4664 *
4665 * FW maintains a log of all events in a non-volatile area. Upper layers would
4666 * usually find out the latest sequence number of the events, the seq number at
4667 * the boot etc. They would "read" all the events below the latest seq number
4668 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4669 * number), they would subsribe to AEN (asynchronous event notification) and
4670 * wait for the events to happen.
4671 */
4672 static int
4673 megasas_get_seq_num(struct megasas_instance *instance,
4674 struct megasas_evt_log_info *eli)
4675 {
4676 struct megasas_cmd *cmd;
4677 struct megasas_dcmd_frame *dcmd;
4678 struct megasas_evt_log_info *el_info;
4679 dma_addr_t el_info_h = 0;
4680
4681 cmd = megasas_get_cmd(instance);
4682
4683 if (!cmd) {
4684 return -ENOMEM;
4685 }
4686
4687 dcmd = &cmd->frame->dcmd;
4688 el_info = pci_alloc_consistent(instance->pdev,
4689 sizeof(struct megasas_evt_log_info),
4690 &el_info_h);
4691
4692 if (!el_info) {
4693 megasas_return_cmd(instance, cmd);
4694 return -ENOMEM;
4695 }
4696
4697 memset(el_info, 0, sizeof(*el_info));
4698 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4699
4700 dcmd->cmd = MFI_CMD_DCMD;
4701 dcmd->cmd_status = 0x0;
4702 dcmd->sge_count = 1;
4703 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4704 dcmd->timeout = 0;
4705 dcmd->pad_0 = 0;
4706 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4707 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4708 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4709 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4710
4711 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4712 dev_err(&instance->pdev->dev, "Command timedout"
4713 "from %s\n", __func__);
4714 else {
4715 /*
4716 * Copy the data back into callers buffer
4717 */
4718 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4719 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4720 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4721 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4722 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4723 }
4724
4725 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4726 el_info, el_info_h);
4727
4728 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4729 megasas_return_mfi_mpt_pthr(instance, cmd,
4730 cmd->mpt_pthr_cmd_blocked);
4731 else
4732 megasas_return_cmd(instance, cmd);
4733
4734 return 0;
4735 }
4736
4737 /**
4738 * megasas_register_aen - Registers for asynchronous event notification
4739 * @instance: Adapter soft state
4740 * @seq_num: The starting sequence number
4741 * @class_locale: Class of the event
4742 *
4743 * This function subscribes for AEN for events beyond the @seq_num. It requests
4744 * to be notified if and only if the event is of type @class_locale
4745 */
4746 static int
4747 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4748 u32 class_locale_word)
4749 {
4750 int ret_val;
4751 struct megasas_cmd *cmd;
4752 struct megasas_dcmd_frame *dcmd;
4753 union megasas_evt_class_locale curr_aen;
4754 union megasas_evt_class_locale prev_aen;
4755
4756 /*
4757 * If there an AEN pending already (aen_cmd), check if the
4758 * class_locale of that pending AEN is inclusive of the new
4759 * AEN request we currently have. If it is, then we don't have
4760 * to do anything. In other words, whichever events the current
4761 * AEN request is subscribing to, have already been subscribed
4762 * to.
4763 *
4764 * If the old_cmd is _not_ inclusive, then we have to abort
4765 * that command, form a class_locale that is superset of both
4766 * old and current and re-issue to the FW
4767 */
4768
4769 curr_aen.word = class_locale_word;
4770
4771 if (instance->aen_cmd) {
4772
4773 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
4774 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
4775
4776 /*
4777 * A class whose enum value is smaller is inclusive of all
4778 * higher values. If a PROGRESS (= -1) was previously
4779 * registered, then a new registration requests for higher
4780 * classes need not be sent to FW. They are automatically
4781 * included.
4782 *
4783 * Locale numbers don't have such hierarchy. They are bitmap
4784 * values
4785 */
4786 if ((prev_aen.members.class <= curr_aen.members.class) &&
4787 !((prev_aen.members.locale & curr_aen.members.locale) ^
4788 curr_aen.members.locale)) {
4789 /*
4790 * Previously issued event registration includes
4791 * current request. Nothing to do.
4792 */
4793 return 0;
4794 } else {
4795 curr_aen.members.locale |= prev_aen.members.locale;
4796
4797 if (prev_aen.members.class < curr_aen.members.class)
4798 curr_aen.members.class = prev_aen.members.class;
4799
4800 instance->aen_cmd->abort_aen = 1;
4801 ret_val = megasas_issue_blocked_abort_cmd(instance,
4802 instance->
4803 aen_cmd, 30);
4804
4805 if (ret_val) {
4806 printk(KERN_DEBUG "megasas: Failed to abort "
4807 "previous AEN command\n");
4808 return ret_val;
4809 }
4810 }
4811 }
4812
4813 cmd = megasas_get_cmd(instance);
4814
4815 if (!cmd)
4816 return -ENOMEM;
4817
4818 dcmd = &cmd->frame->dcmd;
4819
4820 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4821
4822 /*
4823 * Prepare DCMD for aen registration
4824 */
4825 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4826
4827 dcmd->cmd = MFI_CMD_DCMD;
4828 dcmd->cmd_status = 0x0;
4829 dcmd->sge_count = 1;
4830 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4831 dcmd->timeout = 0;
4832 dcmd->pad_0 = 0;
4833 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4834 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4835 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
4836 instance->last_seq_num = seq_num;
4837 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4838 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4839 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
4840
4841 if (instance->aen_cmd != NULL) {
4842 megasas_return_cmd(instance, cmd);
4843 return 0;
4844 }
4845
4846 /*
4847 * Store reference to the cmd used to register for AEN. When an
4848 * application wants us to register for AEN, we have to abort this
4849 * cmd and re-register with a new EVENT LOCALE supplied by that app
4850 */
4851 instance->aen_cmd = cmd;
4852
4853 /*
4854 * Issue the aen registration frame
4855 */
4856 instance->instancet->issue_dcmd(instance, cmd);
4857
4858 return 0;
4859 }
4860
4861 /**
4862 * megasas_start_aen - Subscribes to AEN during driver load time
4863 * @instance: Adapter soft state
4864 */
4865 static int megasas_start_aen(struct megasas_instance *instance)
4866 {
4867 struct megasas_evt_log_info eli;
4868 union megasas_evt_class_locale class_locale;
4869
4870 /*
4871 * Get the latest sequence number from FW
4872 */
4873 memset(&eli, 0, sizeof(eli));
4874
4875 if (megasas_get_seq_num(instance, &eli))
4876 return -1;
4877
4878 /*
4879 * Register AEN with FW for latest sequence number plus 1
4880 */
4881 class_locale.members.reserved = 0;
4882 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4883 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4884
4885 return megasas_register_aen(instance,
4886 eli.newest_seq_num + 1,
4887 class_locale.word);
4888 }
4889
4890 /**
4891 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4892 * @instance: Adapter soft state
4893 */
4894 static int megasas_io_attach(struct megasas_instance *instance)
4895 {
4896 struct Scsi_Host *host = instance->host;
4897
4898 /*
4899 * Export parameters required by SCSI mid-layer
4900 */
4901 host->irq = instance->pdev->irq;
4902 host->unique_id = instance->unique_id;
4903 if (instance->is_imr) {
4904 host->can_queue =
4905 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4906 } else
4907 host->can_queue =
4908 instance->max_fw_cmds - MEGASAS_INT_CMDS;
4909 host->this_id = instance->init_id;
4910 host->sg_tablesize = instance->max_num_sge;
4911
4912 if (instance->fw_support_ieee)
4913 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4914
4915 /*
4916 * Check if the module parameter value for max_sectors can be used
4917 */
4918 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4919 instance->max_sectors_per_req = max_sectors;
4920 else {
4921 if (max_sectors) {
4922 if (((instance->pdev->device ==
4923 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4924 (instance->pdev->device ==
4925 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4926 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4927 instance->max_sectors_per_req = max_sectors;
4928 } else {
4929 printk(KERN_INFO "megasas: max_sectors should be > 0"
4930 "and <= %d (or < 1MB for GEN2 controller)\n",
4931 instance->max_sectors_per_req);
4932 }
4933 }
4934 }
4935
4936 host->max_sectors = instance->max_sectors_per_req;
4937 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
4938 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4939 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4940 host->max_lun = MEGASAS_MAX_LUN;
4941 host->max_cmd_len = 16;
4942
4943 /* Fusion only supports host reset */
4944 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4945 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
4946 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4947 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4948 host->hostt->eh_device_reset_handler = NULL;
4949 host->hostt->eh_bus_reset_handler = NULL;
4950 }
4951
4952 /*
4953 * Notify the mid-layer about the new controller
4954 */
4955 if (scsi_add_host(host, &instance->pdev->dev)) {
4956 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
4957 return -ENODEV;
4958 }
4959
4960 /*
4961 * Trigger SCSI to scan our drives
4962 */
4963 scsi_scan_host(host);
4964 return 0;
4965 }
4966
4967 static int
4968 megasas_set_dma_mask(struct pci_dev *pdev)
4969 {
4970 /*
4971 * All our contollers are capable of performing 64-bit DMA
4972 */
4973 if (IS_DMA64) {
4974 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
4975
4976 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4977 goto fail_set_dma_mask;
4978 }
4979 } else {
4980 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
4981 goto fail_set_dma_mask;
4982 }
4983 /*
4984 * Ensure that all data structures are allocated in 32-bit
4985 * memory.
4986 */
4987 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
4988 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
4989 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
4990 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
4991 dev_info(&pdev->dev, "set 32bit DMA mask"
4992 "and 32 bit consistent mask\n");
4993 else
4994 goto fail_set_dma_mask;
4995 }
4996
4997 return 0;
4998
4999 fail_set_dma_mask:
5000 return 1;
5001 }
5002
5003 /**
5004 * megasas_probe_one - PCI hotplug entry point
5005 * @pdev: PCI device structure
5006 * @id: PCI ids of supported hotplugged adapter
5007 */
5008 static int megasas_probe_one(struct pci_dev *pdev,
5009 const struct pci_device_id *id)
5010 {
5011 int rval, pos, i, j, cpu;
5012 struct Scsi_Host *host;
5013 struct megasas_instance *instance;
5014 u16 control = 0;
5015 struct fusion_context *fusion = NULL;
5016
5017 /* Reset MSI-X in the kdump kernel */
5018 if (reset_devices) {
5019 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5020 if (pos) {
5021 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5022 &control);
5023 if (control & PCI_MSIX_FLAGS_ENABLE) {
5024 dev_info(&pdev->dev, "resetting MSI-X\n");
5025 pci_write_config_word(pdev,
5026 pos + PCI_MSIX_FLAGS,
5027 control &
5028 ~PCI_MSIX_FLAGS_ENABLE);
5029 }
5030 }
5031 }
5032
5033 /*
5034 * Announce PCI information
5035 */
5036 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
5037 pdev->vendor, pdev->device, pdev->subsystem_vendor,
5038 pdev->subsystem_device);
5039
5040 printk("bus %d:slot %d:func %d\n",
5041 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
5042
5043 /*
5044 * PCI prepping: enable device set bus mastering and dma mask
5045 */
5046 rval = pci_enable_device_mem(pdev);
5047
5048 if (rval) {
5049 return rval;
5050 }
5051
5052 pci_set_master(pdev);
5053
5054 if (megasas_set_dma_mask(pdev))
5055 goto fail_set_dma_mask;
5056
5057 host = scsi_host_alloc(&megasas_template,
5058 sizeof(struct megasas_instance));
5059
5060 if (!host) {
5061 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5062 goto fail_alloc_instance;
5063 }
5064
5065 instance = (struct megasas_instance *)host->hostdata;
5066 memset(instance, 0, sizeof(*instance));
5067 atomic_set( &instance->fw_reset_no_pci_access, 0 );
5068 instance->pdev = pdev;
5069
5070 switch (instance->pdev->device) {
5071 case PCI_DEVICE_ID_LSI_FUSION:
5072 case PCI_DEVICE_ID_LSI_PLASMA:
5073 case PCI_DEVICE_ID_LSI_INVADER:
5074 case PCI_DEVICE_ID_LSI_FURY:
5075 {
5076 instance->ctrl_context_pages =
5077 get_order(sizeof(struct fusion_context));
5078 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5079 instance->ctrl_context_pages);
5080 if (!instance->ctrl_context) {
5081 printk(KERN_DEBUG "megasas: Failed to allocate "
5082 "memory for Fusion context info\n");
5083 goto fail_alloc_dma_buf;
5084 }
5085 fusion = instance->ctrl_context;
5086 INIT_LIST_HEAD(&fusion->cmd_pool);
5087 spin_lock_init(&fusion->mpt_pool_lock);
5088 memset(fusion->load_balance_info, 0,
5089 sizeof(struct LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT);
5090 }
5091 break;
5092 default: /* For all other supported controllers */
5093
5094 instance->producer =
5095 pci_alloc_consistent(pdev, sizeof(u32),
5096 &instance->producer_h);
5097 instance->consumer =
5098 pci_alloc_consistent(pdev, sizeof(u32),
5099 &instance->consumer_h);
5100
5101 if (!instance->producer || !instance->consumer) {
5102 printk(KERN_DEBUG "megasas: Failed to allocate"
5103 "memory for producer, consumer\n");
5104 goto fail_alloc_dma_buf;
5105 }
5106
5107 *instance->producer = 0;
5108 *instance->consumer = 0;
5109 break;
5110 }
5111
5112 /* Crash dump feature related initialisation*/
5113 instance->drv_buf_index = 0;
5114 instance->drv_buf_alloc = 0;
5115 instance->crash_dump_fw_support = 0;
5116 instance->crash_dump_app_support = 0;
5117 instance->fw_crash_state = UNAVAILABLE;
5118 spin_lock_init(&instance->crashdump_lock);
5119 instance->crash_dump_buf = NULL;
5120
5121 if (!reset_devices)
5122 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5123 CRASH_DMA_BUF_SIZE,
5124 &instance->crash_dump_h);
5125 if (!instance->crash_dump_buf)
5126 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5127 "crash dump DMA buffer\n");
5128
5129 megasas_poll_wait_aen = 0;
5130 instance->flag_ieee = 0;
5131 instance->ev = NULL;
5132 instance->issuepend_done = 1;
5133 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
5134 instance->is_imr = 0;
5135
5136 instance->evt_detail = pci_alloc_consistent(pdev,
5137 sizeof(struct
5138 megasas_evt_detail),
5139 &instance->evt_detail_h);
5140
5141 if (!instance->evt_detail) {
5142 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5143 "event detail structure\n");
5144 goto fail_alloc_dma_buf;
5145 }
5146
5147 /*
5148 * Initialize locks and queues
5149 */
5150 INIT_LIST_HEAD(&instance->cmd_pool);
5151 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5152
5153 atomic_set(&instance->fw_outstanding,0);
5154
5155 init_waitqueue_head(&instance->int_cmd_wait_q);
5156 init_waitqueue_head(&instance->abort_cmd_wait_q);
5157
5158 spin_lock_init(&instance->mfi_pool_lock);
5159 spin_lock_init(&instance->hba_lock);
5160 spin_lock_init(&instance->completion_lock);
5161
5162 mutex_init(&instance->aen_mutex);
5163 mutex_init(&instance->reset_mutex);
5164
5165 /*
5166 * Initialize PCI related and misc parameters
5167 */
5168 instance->host = host;
5169 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5170 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5171 instance->ctrl_info = NULL;
5172
5173 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5174 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5175 instance->flag_ieee = 1;
5176 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5177 } else
5178 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5));
5179
5180 megasas_dbg_lvl = 0;
5181 instance->flag = 0;
5182 instance->unload = 1;
5183 instance->last_time = 0;
5184 instance->disableOnlineCtrlReset = 1;
5185 instance->UnevenSpanSupport = 0;
5186
5187 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5188 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5189 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5190 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5191 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5192 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5193 } else
5194 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5195
5196 /*
5197 * Initialize MFI Firmware
5198 */
5199 if (megasas_init_fw(instance))
5200 goto fail_init_mfi;
5201
5202 if (instance->requestorId) {
5203 if (instance->PlasmaFW111) {
5204 instance->vf_affiliation_111 =
5205 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5206 &instance->vf_affiliation_111_h);
5207 if (!instance->vf_affiliation_111)
5208 printk(KERN_WARNING "megasas: Can't allocate "
5209 "memory for VF affiliation buffer\n");
5210 } else {
5211 instance->vf_affiliation =
5212 pci_alloc_consistent(pdev,
5213 (MAX_LOGICAL_DRIVES + 1) *
5214 sizeof(struct MR_LD_VF_AFFILIATION),
5215 &instance->vf_affiliation_h);
5216 if (!instance->vf_affiliation)
5217 printk(KERN_WARNING "megasas: Can't allocate "
5218 "memory for VF affiliation buffer\n");
5219 }
5220 }
5221
5222 retry_irq_register:
5223 /*
5224 * Register IRQ
5225 */
5226 if (instance->msix_vectors) {
5227 cpu = cpumask_first(cpu_online_mask);
5228 for (i = 0; i < instance->msix_vectors; i++) {
5229 instance->irq_context[i].instance = instance;
5230 instance->irq_context[i].MSIxIndex = i;
5231 if (request_irq(instance->msixentry[i].vector,
5232 instance->instancet->service_isr, 0,
5233 "megasas",
5234 &instance->irq_context[i])) {
5235 printk(KERN_DEBUG "megasas: Failed to "
5236 "register IRQ for vector %d.\n", i);
5237 for (j = 0; j < i; j++) {
5238 if (smp_affinity_enable)
5239 irq_set_affinity_hint(
5240 instance->msixentry[j].vector, NULL);
5241 free_irq(
5242 instance->msixentry[j].vector,
5243 &instance->irq_context[j]);
5244 }
5245 /* Retry irq register for IO_APIC */
5246 instance->msix_vectors = 0;
5247 goto retry_irq_register;
5248 }
5249 if (smp_affinity_enable) {
5250 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5251 get_cpu_mask(cpu)))
5252 dev_err(&instance->pdev->dev,
5253 "Error setting affinity hint "
5254 "for cpu %d\n", cpu);
5255 cpu = cpumask_next(cpu, cpu_online_mask);
5256 }
5257 }
5258 } else {
5259 instance->irq_context[0].instance = instance;
5260 instance->irq_context[0].MSIxIndex = 0;
5261 if (request_irq(pdev->irq, instance->instancet->service_isr,
5262 IRQF_SHARED, "megasas",
5263 &instance->irq_context[0])) {
5264 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5265 goto fail_irq;
5266 }
5267 }
5268
5269 instance->instancet->enable_intr(instance);
5270
5271 /*
5272 * Store instance in PCI softstate
5273 */
5274 pci_set_drvdata(pdev, instance);
5275
5276 /*
5277 * Add this controller to megasas_mgmt_info structure so that it
5278 * can be exported to management applications
5279 */
5280 megasas_mgmt_info.count++;
5281 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5282 megasas_mgmt_info.max_index++;
5283
5284 /*
5285 * Register with SCSI mid-layer
5286 */
5287 if (megasas_io_attach(instance))
5288 goto fail_io_attach;
5289
5290 instance->unload = 0;
5291
5292 /*
5293 * Initiate AEN (Asynchronous Event Notification)
5294 */
5295 if (megasas_start_aen(instance)) {
5296 printk(KERN_DEBUG "megasas: start aen failed\n");
5297 goto fail_start_aen;
5298 }
5299
5300 /* Get current SR-IOV LD/VF affiliation */
5301 if (instance->requestorId)
5302 megasas_get_ld_vf_affiliation(instance, 1);
5303
5304 return 0;
5305
5306 fail_start_aen:
5307 fail_io_attach:
5308 megasas_mgmt_info.count--;
5309 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5310 megasas_mgmt_info.max_index--;
5311
5312 instance->instancet->disable_intr(instance);
5313 if (instance->msix_vectors)
5314 for (i = 0; i < instance->msix_vectors; i++) {
5315 if (smp_affinity_enable)
5316 irq_set_affinity_hint(
5317 instance->msixentry[i].vector, NULL);
5318 free_irq(instance->msixentry[i].vector,
5319 &instance->irq_context[i]);
5320 }
5321 else
5322 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5323 fail_irq:
5324 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5325 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5326 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5327 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
5328 megasas_release_fusion(instance);
5329 else
5330 megasas_release_mfi(instance);
5331 fail_init_mfi:
5332 if (instance->msix_vectors)
5333 pci_disable_msix(instance->pdev);
5334 fail_alloc_dma_buf:
5335 if (instance->evt_detail)
5336 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5337 instance->evt_detail,
5338 instance->evt_detail_h);
5339
5340 if (instance->producer)
5341 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5342 instance->producer_h);
5343 if (instance->consumer)
5344 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5345 instance->consumer_h);
5346 scsi_host_put(host);
5347
5348 fail_alloc_instance:
5349 fail_set_dma_mask:
5350 pci_disable_device(pdev);
5351
5352 return -ENODEV;
5353 }
5354
5355 /**
5356 * megasas_flush_cache - Requests FW to flush all its caches
5357 * @instance: Adapter soft state
5358 */
5359 static void megasas_flush_cache(struct megasas_instance *instance)
5360 {
5361 struct megasas_cmd *cmd;
5362 struct megasas_dcmd_frame *dcmd;
5363
5364 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5365 return;
5366
5367 cmd = megasas_get_cmd(instance);
5368
5369 if (!cmd)
5370 return;
5371
5372 dcmd = &cmd->frame->dcmd;
5373
5374 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5375
5376 dcmd->cmd = MFI_CMD_DCMD;
5377 dcmd->cmd_status = 0x0;
5378 dcmd->sge_count = 0;
5379 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5380 dcmd->timeout = 0;
5381 dcmd->pad_0 = 0;
5382 dcmd->data_xfer_len = 0;
5383 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5384 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5385
5386 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5387 dev_err(&instance->pdev->dev, "Command timedout"
5388 " from %s\n", __func__);
5389
5390 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5391 megasas_return_mfi_mpt_pthr(instance, cmd,
5392 cmd->mpt_pthr_cmd_blocked);
5393 else
5394 megasas_return_cmd(instance, cmd);
5395
5396 return;
5397 }
5398
5399 /**
5400 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5401 * @instance: Adapter soft state
5402 * @opcode: Shutdown/Hibernate
5403 */
5404 static void megasas_shutdown_controller(struct megasas_instance *instance,
5405 u32 opcode)
5406 {
5407 struct megasas_cmd *cmd;
5408 struct megasas_dcmd_frame *dcmd;
5409
5410 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5411 return;
5412
5413 cmd = megasas_get_cmd(instance);
5414
5415 if (!cmd)
5416 return;
5417
5418 if (instance->aen_cmd)
5419 megasas_issue_blocked_abort_cmd(instance,
5420 instance->aen_cmd, 30);
5421 if (instance->map_update_cmd)
5422 megasas_issue_blocked_abort_cmd(instance,
5423 instance->map_update_cmd, 30);
5424 dcmd = &cmd->frame->dcmd;
5425
5426 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5427
5428 dcmd->cmd = MFI_CMD_DCMD;
5429 dcmd->cmd_status = 0x0;
5430 dcmd->sge_count = 0;
5431 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5432 dcmd->timeout = 0;
5433 dcmd->pad_0 = 0;
5434 dcmd->data_xfer_len = 0;
5435 dcmd->opcode = cpu_to_le32(opcode);
5436
5437 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5438 dev_err(&instance->pdev->dev, "Command timedout"
5439 "from %s\n", __func__);
5440
5441 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5442 megasas_return_mfi_mpt_pthr(instance, cmd,
5443 cmd->mpt_pthr_cmd_blocked);
5444 else
5445 megasas_return_cmd(instance, cmd);
5446
5447 return;
5448 }
5449
5450 #ifdef CONFIG_PM
5451 /**
5452 * megasas_suspend - driver suspend entry point
5453 * @pdev: PCI device structure
5454 * @state: PCI power state to suspend routine
5455 */
5456 static int
5457 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5458 {
5459 struct Scsi_Host *host;
5460 struct megasas_instance *instance;
5461 int i;
5462
5463 instance = pci_get_drvdata(pdev);
5464 host = instance->host;
5465 instance->unload = 1;
5466
5467 /* Shutdown SR-IOV heartbeat timer */
5468 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5469 del_timer_sync(&instance->sriov_heartbeat_timer);
5470
5471 megasas_flush_cache(instance);
5472 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
5473
5474 /* cancel the delayed work if this work still in queue */
5475 if (instance->ev != NULL) {
5476 struct megasas_aen_event *ev = instance->ev;
5477 cancel_delayed_work_sync(&ev->hotplug_work);
5478 instance->ev = NULL;
5479 }
5480
5481 tasklet_kill(&instance->isr_tasklet);
5482
5483 pci_set_drvdata(instance->pdev, instance);
5484 instance->instancet->disable_intr(instance);
5485
5486 if (instance->msix_vectors)
5487 for (i = 0; i < instance->msix_vectors; i++) {
5488 if (smp_affinity_enable)
5489 irq_set_affinity_hint(
5490 instance->msixentry[i].vector, NULL);
5491 free_irq(instance->msixentry[i].vector,
5492 &instance->irq_context[i]);
5493 }
5494 else
5495 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5496 if (instance->msix_vectors)
5497 pci_disable_msix(instance->pdev);
5498
5499 pci_save_state(pdev);
5500 pci_disable_device(pdev);
5501
5502 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5503
5504 return 0;
5505 }
5506
5507 /**
5508 * megasas_resume- driver resume entry point
5509 * @pdev: PCI device structure
5510 */
5511 static int
5512 megasas_resume(struct pci_dev *pdev)
5513 {
5514 int rval, i, j, cpu;
5515 struct Scsi_Host *host;
5516 struct megasas_instance *instance;
5517
5518 instance = pci_get_drvdata(pdev);
5519 host = instance->host;
5520 pci_set_power_state(pdev, PCI_D0);
5521 pci_enable_wake(pdev, PCI_D0, 0);
5522 pci_restore_state(pdev);
5523
5524 /*
5525 * PCI prepping: enable device set bus mastering and dma mask
5526 */
5527 rval = pci_enable_device_mem(pdev);
5528
5529 if (rval) {
5530 printk(KERN_ERR "megasas: Enable device failed\n");
5531 return rval;
5532 }
5533
5534 pci_set_master(pdev);
5535
5536 if (megasas_set_dma_mask(pdev))
5537 goto fail_set_dma_mask;
5538
5539 /*
5540 * Initialize MFI Firmware
5541 */
5542
5543 atomic_set(&instance->fw_outstanding, 0);
5544
5545 /*
5546 * We expect the FW state to be READY
5547 */
5548 if (megasas_transition_to_ready(instance, 0))
5549 goto fail_ready_state;
5550
5551 /* Now re-enable MSI-X */
5552 if (instance->msix_vectors &&
5553 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5554 instance->msix_vectors))
5555 goto fail_reenable_msix;
5556
5557 switch (instance->pdev->device) {
5558 case PCI_DEVICE_ID_LSI_FUSION:
5559 case PCI_DEVICE_ID_LSI_PLASMA:
5560 case PCI_DEVICE_ID_LSI_INVADER:
5561 case PCI_DEVICE_ID_LSI_FURY:
5562 {
5563 megasas_reset_reply_desc(instance);
5564 if (megasas_ioc_init_fusion(instance)) {
5565 megasas_free_cmds(instance);
5566 megasas_free_cmds_fusion(instance);
5567 goto fail_init_mfi;
5568 }
5569 if (!megasas_get_map_info(instance))
5570 megasas_sync_map_info(instance);
5571 }
5572 break;
5573 default:
5574 *instance->producer = 0;
5575 *instance->consumer = 0;
5576 if (megasas_issue_init_mfi(instance))
5577 goto fail_init_mfi;
5578 break;
5579 }
5580
5581 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5582 (unsigned long)instance);
5583
5584 /*
5585 * Register IRQ
5586 */
5587 if (instance->msix_vectors) {
5588 cpu = cpumask_first(cpu_online_mask);
5589 for (i = 0 ; i < instance->msix_vectors; i++) {
5590 instance->irq_context[i].instance = instance;
5591 instance->irq_context[i].MSIxIndex = i;
5592 if (request_irq(instance->msixentry[i].vector,
5593 instance->instancet->service_isr, 0,
5594 "megasas",
5595 &instance->irq_context[i])) {
5596 printk(KERN_DEBUG "megasas: Failed to "
5597 "register IRQ for vector %d.\n", i);
5598 for (j = 0; j < i; j++) {
5599 if (smp_affinity_enable)
5600 irq_set_affinity_hint(
5601 instance->msixentry[j].vector, NULL);
5602 free_irq(
5603 instance->msixentry[j].vector,
5604 &instance->irq_context[j]);
5605 }
5606 goto fail_irq;
5607 }
5608
5609 if (smp_affinity_enable) {
5610 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5611 get_cpu_mask(cpu)))
5612 dev_err(&instance->pdev->dev, "Error "
5613 "setting affinity hint for cpu "
5614 "%d\n", cpu);
5615 cpu = cpumask_next(cpu, cpu_online_mask);
5616 }
5617 }
5618 } else {
5619 instance->irq_context[0].instance = instance;
5620 instance->irq_context[0].MSIxIndex = 0;
5621 if (request_irq(pdev->irq, instance->instancet->service_isr,
5622 IRQF_SHARED, "megasas",
5623 &instance->irq_context[0])) {
5624 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5625 goto fail_irq;
5626 }
5627 }
5628
5629 /* Re-launch SR-IOV heartbeat timer */
5630 if (instance->requestorId) {
5631 if (!megasas_sriov_start_heartbeat(instance, 0))
5632 megasas_start_timer(instance,
5633 &instance->sriov_heartbeat_timer,
5634 megasas_sriov_heartbeat_handler,
5635 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5636 else
5637 instance->skip_heartbeat_timer_del = 1;
5638 }
5639
5640 instance->instancet->enable_intr(instance);
5641 instance->unload = 0;
5642
5643 /*
5644 * Initiate AEN (Asynchronous Event Notification)
5645 */
5646 if (megasas_start_aen(instance))
5647 printk(KERN_ERR "megasas: Start AEN failed\n");
5648
5649 return 0;
5650
5651 fail_irq:
5652 fail_init_mfi:
5653 if (instance->evt_detail)
5654 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5655 instance->evt_detail,
5656 instance->evt_detail_h);
5657
5658 if (instance->producer)
5659 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5660 instance->producer_h);
5661 if (instance->consumer)
5662 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5663 instance->consumer_h);
5664 scsi_host_put(host);
5665
5666 fail_set_dma_mask:
5667 fail_ready_state:
5668 fail_reenable_msix:
5669
5670 pci_disable_device(pdev);
5671
5672 return -ENODEV;
5673 }
5674 #else
5675 #define megasas_suspend NULL
5676 #define megasas_resume NULL
5677 #endif
5678
5679 /**
5680 * megasas_detach_one - PCI hot"un"plug entry point
5681 * @pdev: PCI device structure
5682 */
5683 static void megasas_detach_one(struct pci_dev *pdev)
5684 {
5685 int i;
5686 struct Scsi_Host *host;
5687 struct megasas_instance *instance;
5688 struct fusion_context *fusion;
5689
5690 instance = pci_get_drvdata(pdev);
5691 instance->unload = 1;
5692 host = instance->host;
5693 fusion = instance->ctrl_context;
5694
5695 /* Shutdown SR-IOV heartbeat timer */
5696 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5697 del_timer_sync(&instance->sriov_heartbeat_timer);
5698
5699 if (instance->fw_crash_state != UNAVAILABLE)
5700 megasas_free_host_crash_buffer(instance);
5701 scsi_remove_host(instance->host);
5702 megasas_flush_cache(instance);
5703 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5704
5705 /* cancel the delayed work if this work still in queue*/
5706 if (instance->ev != NULL) {
5707 struct megasas_aen_event *ev = instance->ev;
5708 cancel_delayed_work_sync(&ev->hotplug_work);
5709 instance->ev = NULL;
5710 }
5711
5712 /* cancel all wait events */
5713 wake_up_all(&instance->int_cmd_wait_q);
5714
5715 tasklet_kill(&instance->isr_tasklet);
5716
5717 /*
5718 * Take the instance off the instance array. Note that we will not
5719 * decrement the max_index. We let this array be sparse array
5720 */
5721 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5722 if (megasas_mgmt_info.instance[i] == instance) {
5723 megasas_mgmt_info.count--;
5724 megasas_mgmt_info.instance[i] = NULL;
5725
5726 break;
5727 }
5728 }
5729
5730 instance->instancet->disable_intr(instance);
5731
5732 if (instance->msix_vectors)
5733 for (i = 0; i < instance->msix_vectors; i++) {
5734 if (smp_affinity_enable)
5735 irq_set_affinity_hint(
5736 instance->msixentry[i].vector, NULL);
5737 free_irq(instance->msixentry[i].vector,
5738 &instance->irq_context[i]);
5739 }
5740 else
5741 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5742 if (instance->msix_vectors)
5743 pci_disable_msix(instance->pdev);
5744
5745 switch (instance->pdev->device) {
5746 case PCI_DEVICE_ID_LSI_FUSION:
5747 case PCI_DEVICE_ID_LSI_PLASMA:
5748 case PCI_DEVICE_ID_LSI_INVADER:
5749 case PCI_DEVICE_ID_LSI_FURY:
5750 megasas_release_fusion(instance);
5751 for (i = 0; i < 2 ; i++) {
5752 if (fusion->ld_map[i])
5753 dma_free_coherent(&instance->pdev->dev,
5754 fusion->max_map_sz,
5755 fusion->ld_map[i],
5756 fusion->ld_map_phys[i]);
5757 if (fusion->ld_drv_map[i])
5758 free_pages((ulong)fusion->ld_drv_map[i],
5759 fusion->drv_map_pages);
5760 }
5761 free_pages((ulong)instance->ctrl_context,
5762 instance->ctrl_context_pages);
5763 break;
5764 default:
5765 megasas_release_mfi(instance);
5766 pci_free_consistent(pdev, sizeof(u32),
5767 instance->producer,
5768 instance->producer_h);
5769 pci_free_consistent(pdev, sizeof(u32),
5770 instance->consumer,
5771 instance->consumer_h);
5772 break;
5773 }
5774
5775 kfree(instance->ctrl_info);
5776
5777 if (instance->evt_detail)
5778 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5779 instance->evt_detail, instance->evt_detail_h);
5780
5781 if (instance->vf_affiliation)
5782 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5783 sizeof(struct MR_LD_VF_AFFILIATION),
5784 instance->vf_affiliation,
5785 instance->vf_affiliation_h);
5786
5787 if (instance->vf_affiliation_111)
5788 pci_free_consistent(pdev,
5789 sizeof(struct MR_LD_VF_AFFILIATION_111),
5790 instance->vf_affiliation_111,
5791 instance->vf_affiliation_111_h);
5792
5793 if (instance->hb_host_mem)
5794 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5795 instance->hb_host_mem,
5796 instance->hb_host_mem_h);
5797
5798 if (instance->crash_dump_buf)
5799 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5800 instance->crash_dump_buf, instance->crash_dump_h);
5801
5802 scsi_host_put(host);
5803
5804 pci_disable_device(pdev);
5805
5806 return;
5807 }
5808
5809 /**
5810 * megasas_shutdown - Shutdown entry point
5811 * @device: Generic device structure
5812 */
5813 static void megasas_shutdown(struct pci_dev *pdev)
5814 {
5815 int i;
5816 struct megasas_instance *instance = pci_get_drvdata(pdev);
5817
5818 instance->unload = 1;
5819 megasas_flush_cache(instance);
5820 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5821 instance->instancet->disable_intr(instance);
5822 if (instance->msix_vectors)
5823 for (i = 0; i < instance->msix_vectors; i++) {
5824 if (smp_affinity_enable)
5825 irq_set_affinity_hint(
5826 instance->msixentry[i].vector, NULL);
5827 free_irq(instance->msixentry[i].vector,
5828 &instance->irq_context[i]);
5829 }
5830 else
5831 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5832 if (instance->msix_vectors)
5833 pci_disable_msix(instance->pdev);
5834 }
5835
5836 /**
5837 * megasas_mgmt_open - char node "open" entry point
5838 */
5839 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5840 {
5841 /*
5842 * Allow only those users with admin rights
5843 */
5844 if (!capable(CAP_SYS_ADMIN))
5845 return -EACCES;
5846
5847 return 0;
5848 }
5849
5850 /**
5851 * megasas_mgmt_fasync - Async notifier registration from applications
5852 *
5853 * This function adds the calling process to a driver global queue. When an
5854 * event occurs, SIGIO will be sent to all processes in this queue.
5855 */
5856 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5857 {
5858 int rc;
5859
5860 mutex_lock(&megasas_async_queue_mutex);
5861
5862 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5863
5864 mutex_unlock(&megasas_async_queue_mutex);
5865
5866 if (rc >= 0) {
5867 /* For sanity check when we get ioctl */
5868 filep->private_data = filep;
5869 return 0;
5870 }
5871
5872 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5873
5874 return rc;
5875 }
5876
5877 /**
5878 * megasas_mgmt_poll - char node "poll" entry point
5879 * */
5880 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5881 {
5882 unsigned int mask;
5883 unsigned long flags;
5884 poll_wait(file, &megasas_poll_wait, wait);
5885 spin_lock_irqsave(&poll_aen_lock, flags);
5886 if (megasas_poll_wait_aen)
5887 mask = (POLLIN | POLLRDNORM);
5888
5889 else
5890 mask = 0;
5891 megasas_poll_wait_aen = 0;
5892 spin_unlock_irqrestore(&poll_aen_lock, flags);
5893 return mask;
5894 }
5895
5896 /*
5897 * megasas_set_crash_dump_params_ioctl:
5898 * Send CRASH_DUMP_MODE DCMD to all controllers
5899 * @cmd: MFI command frame
5900 */
5901
5902 static int megasas_set_crash_dump_params_ioctl(
5903 struct megasas_cmd *cmd)
5904 {
5905 struct megasas_instance *local_instance;
5906 int i, error = 0;
5907 int crash_support;
5908
5909 crash_support = cmd->frame->dcmd.mbox.w[0];
5910
5911 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5912 local_instance = megasas_mgmt_info.instance[i];
5913 if (local_instance && local_instance->crash_dump_drv_support) {
5914 if ((local_instance->adprecovery ==
5915 MEGASAS_HBA_OPERATIONAL) &&
5916 !megasas_set_crash_dump_params(local_instance,
5917 crash_support)) {
5918 local_instance->crash_dump_app_support =
5919 crash_support;
5920 dev_info(&local_instance->pdev->dev,
5921 "Application firmware crash "
5922 "dump mode set success\n");
5923 error = 0;
5924 } else {
5925 dev_info(&local_instance->pdev->dev,
5926 "Application firmware crash "
5927 "dump mode set failed\n");
5928 error = -1;
5929 }
5930 }
5931 }
5932 return error;
5933 }
5934
5935 /**
5936 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
5937 * @instance: Adapter soft state
5938 * @argp: User's ioctl packet
5939 */
5940 static int
5941 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
5942 struct megasas_iocpacket __user * user_ioc,
5943 struct megasas_iocpacket *ioc)
5944 {
5945 struct megasas_sge32 *kern_sge32;
5946 struct megasas_cmd *cmd;
5947 void *kbuff_arr[MAX_IOCTL_SGE];
5948 dma_addr_t buf_handle = 0;
5949 int error = 0, i;
5950 void *sense = NULL;
5951 dma_addr_t sense_handle;
5952 unsigned long *sense_ptr;
5953
5954 memset(kbuff_arr, 0, sizeof(kbuff_arr));
5955
5956 if (ioc->sge_count > MAX_IOCTL_SGE) {
5957 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
5958 ioc->sge_count, MAX_IOCTL_SGE);
5959 return -EINVAL;
5960 }
5961
5962 cmd = megasas_get_cmd(instance);
5963 if (!cmd) {
5964 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
5965 return -ENOMEM;
5966 }
5967
5968 /*
5969 * User's IOCTL packet has 2 frames (maximum). Copy those two
5970 * frames into our cmd's frames. cmd->frame's context will get
5971 * overwritten when we copy from user's frames. So set that value
5972 * alone separately
5973 */
5974 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
5975 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
5976 cmd->frame->hdr.pad_0 = 0;
5977 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
5978 MFI_FRAME_SGL64 |
5979 MFI_FRAME_SENSE64));
5980
5981 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
5982 error = megasas_set_crash_dump_params_ioctl(cmd);
5983 megasas_return_cmd(instance, cmd);
5984 return error;
5985 }
5986
5987 /*
5988 * The management interface between applications and the fw uses
5989 * MFI frames. E.g, RAID configuration changes, LD property changes
5990 * etc are accomplishes through different kinds of MFI frames. The
5991 * driver needs to care only about substituting user buffers with
5992 * kernel buffers in SGLs. The location of SGL is embedded in the
5993 * struct iocpacket itself.
5994 */
5995 kern_sge32 = (struct megasas_sge32 *)
5996 ((unsigned long)cmd->frame + ioc->sgl_off);
5997
5998 /*
5999 * For each user buffer, create a mirror buffer and copy in
6000 */
6001 for (i = 0; i < ioc->sge_count; i++) {
6002 if (!ioc->sgl[i].iov_len)
6003 continue;
6004
6005 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6006 ioc->sgl[i].iov_len,
6007 &buf_handle, GFP_KERNEL);
6008 if (!kbuff_arr[i]) {
6009 printk(KERN_DEBUG "megasas: Failed to alloc "
6010 "kernel SGL buffer for IOCTL \n");
6011 error = -ENOMEM;
6012 goto out;
6013 }
6014
6015 /*
6016 * We don't change the dma_coherent_mask, so
6017 * pci_alloc_consistent only returns 32bit addresses
6018 */
6019 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6020 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6021
6022 /*
6023 * We created a kernel buffer corresponding to the
6024 * user buffer. Now copy in from the user buffer
6025 */
6026 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6027 (u32) (ioc->sgl[i].iov_len))) {
6028 error = -EFAULT;
6029 goto out;
6030 }
6031 }
6032
6033 if (ioc->sense_len) {
6034 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6035 &sense_handle, GFP_KERNEL);
6036 if (!sense) {
6037 error = -ENOMEM;
6038 goto out;
6039 }
6040
6041 sense_ptr =
6042 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6043 *sense_ptr = cpu_to_le32(sense_handle);
6044 }
6045
6046 /*
6047 * Set the sync_cmd flag so that the ISR knows not to complete this
6048 * cmd to the SCSI mid-layer
6049 */
6050 cmd->sync_cmd = 1;
6051 megasas_issue_blocked_cmd(instance, cmd, 0);
6052 cmd->sync_cmd = 0;
6053
6054 /*
6055 * copy out the kernel buffers to user buffers
6056 */
6057 for (i = 0; i < ioc->sge_count; i++) {
6058 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6059 ioc->sgl[i].iov_len)) {
6060 error = -EFAULT;
6061 goto out;
6062 }
6063 }
6064
6065 /*
6066 * copy out the sense
6067 */
6068 if (ioc->sense_len) {
6069 /*
6070 * sense_ptr points to the location that has the user
6071 * sense buffer address
6072 */
6073 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6074 ioc->sense_off);
6075
6076 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6077 sense, ioc->sense_len)) {
6078 printk(KERN_ERR "megasas: Failed to copy out to user "
6079 "sense data\n");
6080 error = -EFAULT;
6081 goto out;
6082 }
6083 }
6084
6085 /*
6086 * copy the status codes returned by the fw
6087 */
6088 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6089 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6090 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6091 error = -EFAULT;
6092 }
6093
6094 out:
6095 if (sense) {
6096 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6097 sense, sense_handle);
6098 }
6099
6100 for (i = 0; i < ioc->sge_count; i++) {
6101 if (kbuff_arr[i])
6102 dma_free_coherent(&instance->pdev->dev,
6103 le32_to_cpu(kern_sge32[i].length),
6104 kbuff_arr[i],
6105 le32_to_cpu(kern_sge32[i].phys_addr));
6106 kbuff_arr[i] = NULL;
6107 }
6108
6109 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
6110 megasas_return_mfi_mpt_pthr(instance, cmd,
6111 cmd->mpt_pthr_cmd_blocked);
6112 else
6113 megasas_return_cmd(instance, cmd);
6114 return error;
6115 }
6116
6117 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6118 {
6119 struct megasas_iocpacket __user *user_ioc =
6120 (struct megasas_iocpacket __user *)arg;
6121 struct megasas_iocpacket *ioc;
6122 struct megasas_instance *instance;
6123 int error;
6124 int i;
6125 unsigned long flags;
6126 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6127
6128 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6129 if (!ioc)
6130 return -ENOMEM;
6131
6132 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6133 error = -EFAULT;
6134 goto out_kfree_ioc;
6135 }
6136
6137 instance = megasas_lookup_instance(ioc->host_no);
6138 if (!instance) {
6139 error = -ENODEV;
6140 goto out_kfree_ioc;
6141 }
6142
6143 /* Adjust ioctl wait time for VF mode */
6144 if (instance->requestorId)
6145 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6146
6147 /* Block ioctls in VF mode */
6148 if (instance->requestorId && !allow_vf_ioctls) {
6149 error = -ENODEV;
6150 goto out_kfree_ioc;
6151 }
6152
6153 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6154 printk(KERN_ERR "Controller in crit error\n");
6155 error = -ENODEV;
6156 goto out_kfree_ioc;
6157 }
6158
6159 if (instance->unload == 1) {
6160 error = -ENODEV;
6161 goto out_kfree_ioc;
6162 }
6163
6164 /*
6165 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
6166 */
6167 if (down_interruptible(&instance->ioctl_sem)) {
6168 error = -ERESTARTSYS;
6169 goto out_kfree_ioc;
6170 }
6171
6172 for (i = 0; i < wait_time; i++) {
6173
6174 spin_lock_irqsave(&instance->hba_lock, flags);
6175 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6176 spin_unlock_irqrestore(&instance->hba_lock, flags);
6177 break;
6178 }
6179 spin_unlock_irqrestore(&instance->hba_lock, flags);
6180
6181 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6182 printk(KERN_NOTICE "megasas: waiting"
6183 "for controller reset to finish\n");
6184 }
6185
6186 msleep(1000);
6187 }
6188
6189 spin_lock_irqsave(&instance->hba_lock, flags);
6190 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6191 spin_unlock_irqrestore(&instance->hba_lock, flags);
6192
6193 printk(KERN_ERR "megaraid_sas: timed out while"
6194 "waiting for HBA to recover\n");
6195 error = -ENODEV;
6196 goto out_up;
6197 }
6198 spin_unlock_irqrestore(&instance->hba_lock, flags);
6199
6200 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6201 out_up:
6202 up(&instance->ioctl_sem);
6203
6204 out_kfree_ioc:
6205 kfree(ioc);
6206 return error;
6207 }
6208
6209 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6210 {
6211 struct megasas_instance *instance;
6212 struct megasas_aen aen;
6213 int error;
6214 int i;
6215 unsigned long flags;
6216 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6217
6218 if (file->private_data != file) {
6219 printk(KERN_DEBUG "megasas: fasync_helper was not "
6220 "called first\n");
6221 return -EINVAL;
6222 }
6223
6224 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6225 return -EFAULT;
6226
6227 instance = megasas_lookup_instance(aen.host_no);
6228
6229 if (!instance)
6230 return -ENODEV;
6231
6232 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6233 return -ENODEV;
6234 }
6235
6236 if (instance->unload == 1) {
6237 return -ENODEV;
6238 }
6239
6240 for (i = 0; i < wait_time; i++) {
6241
6242 spin_lock_irqsave(&instance->hba_lock, flags);
6243 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6244 spin_unlock_irqrestore(&instance->hba_lock,
6245 flags);
6246 break;
6247 }
6248
6249 spin_unlock_irqrestore(&instance->hba_lock, flags);
6250
6251 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6252 printk(KERN_NOTICE "megasas: waiting for"
6253 "controller reset to finish\n");
6254 }
6255
6256 msleep(1000);
6257 }
6258
6259 spin_lock_irqsave(&instance->hba_lock, flags);
6260 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6261 spin_unlock_irqrestore(&instance->hba_lock, flags);
6262 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6263 "for HBA to recover.\n");
6264 return -ENODEV;
6265 }
6266 spin_unlock_irqrestore(&instance->hba_lock, flags);
6267
6268 mutex_lock(&instance->aen_mutex);
6269 error = megasas_register_aen(instance, aen.seq_num,
6270 aen.class_locale_word);
6271 mutex_unlock(&instance->aen_mutex);
6272 return error;
6273 }
6274
6275 /**
6276 * megasas_mgmt_ioctl - char node ioctl entry point
6277 */
6278 static long
6279 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6280 {
6281 switch (cmd) {
6282 case MEGASAS_IOC_FIRMWARE:
6283 return megasas_mgmt_ioctl_fw(file, arg);
6284
6285 case MEGASAS_IOC_GET_AEN:
6286 return megasas_mgmt_ioctl_aen(file, arg);
6287 }
6288
6289 return -ENOTTY;
6290 }
6291
6292 #ifdef CONFIG_COMPAT
6293 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6294 {
6295 struct compat_megasas_iocpacket __user *cioc =
6296 (struct compat_megasas_iocpacket __user *)arg;
6297 struct megasas_iocpacket __user *ioc =
6298 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6299 int i;
6300 int error = 0;
6301 compat_uptr_t ptr;
6302
6303 if (clear_user(ioc, sizeof(*ioc)))
6304 return -EFAULT;
6305
6306 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6307 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6308 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6309 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6310 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6311 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6312 return -EFAULT;
6313
6314 /*
6315 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6316 * sense_len is not null, so prepare the 64bit value under
6317 * the same condition.
6318 */
6319 if (ioc->sense_len) {
6320 void __user **sense_ioc_ptr =
6321 (void __user **)(ioc->frame.raw + ioc->sense_off);
6322 compat_uptr_t *sense_cioc_ptr =
6323 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6324 if (get_user(ptr, sense_cioc_ptr) ||
6325 put_user(compat_ptr(ptr), sense_ioc_ptr))
6326 return -EFAULT;
6327 }
6328
6329 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6330 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6331 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6332 copy_in_user(&ioc->sgl[i].iov_len,
6333 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6334 return -EFAULT;
6335 }
6336
6337 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6338
6339 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6340 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6341 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6342 return -EFAULT;
6343 }
6344 return error;
6345 }
6346
6347 static long
6348 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6349 unsigned long arg)
6350 {
6351 switch (cmd) {
6352 case MEGASAS_IOC_FIRMWARE32:
6353 return megasas_mgmt_compat_ioctl_fw(file, arg);
6354 case MEGASAS_IOC_GET_AEN:
6355 return megasas_mgmt_ioctl_aen(file, arg);
6356 }
6357
6358 return -ENOTTY;
6359 }
6360 #endif
6361
6362 /*
6363 * File operations structure for management interface
6364 */
6365 static const struct file_operations megasas_mgmt_fops = {
6366 .owner = THIS_MODULE,
6367 .open = megasas_mgmt_open,
6368 .fasync = megasas_mgmt_fasync,
6369 .unlocked_ioctl = megasas_mgmt_ioctl,
6370 .poll = megasas_mgmt_poll,
6371 #ifdef CONFIG_COMPAT
6372 .compat_ioctl = megasas_mgmt_compat_ioctl,
6373 #endif
6374 .llseek = noop_llseek,
6375 };
6376
6377 /*
6378 * PCI hotplug support registration structure
6379 */
6380 static struct pci_driver megasas_pci_driver = {
6381
6382 .name = "megaraid_sas",
6383 .id_table = megasas_pci_table,
6384 .probe = megasas_probe_one,
6385 .remove = megasas_detach_one,
6386 .suspend = megasas_suspend,
6387 .resume = megasas_resume,
6388 .shutdown = megasas_shutdown,
6389 };
6390
6391 /*
6392 * Sysfs driver attributes
6393 */
6394 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6395 {
6396 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6397 MEGASAS_VERSION);
6398 }
6399
6400 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6401
6402 static ssize_t
6403 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6404 {
6405 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6406 MEGASAS_RELDATE);
6407 }
6408
6409 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
6410 NULL);
6411
6412 static ssize_t
6413 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6414 {
6415 return sprintf(buf, "%u\n", support_poll_for_event);
6416 }
6417
6418 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6419 megasas_sysfs_show_support_poll_for_event, NULL);
6420
6421 static ssize_t
6422 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6423 {
6424 return sprintf(buf, "%u\n", support_device_change);
6425 }
6426
6427 static DRIVER_ATTR(support_device_change, S_IRUGO,
6428 megasas_sysfs_show_support_device_change, NULL);
6429
6430 static ssize_t
6431 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6432 {
6433 return sprintf(buf, "%u\n", megasas_dbg_lvl);
6434 }
6435
6436 static ssize_t
6437 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6438 {
6439 int retval = count;
6440 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6441 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6442 retval = -EINVAL;
6443 }
6444 return retval;
6445 }
6446
6447 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6448 megasas_sysfs_set_dbg_lvl);
6449
6450 static void
6451 megasas_aen_polling(struct work_struct *work)
6452 {
6453 struct megasas_aen_event *ev =
6454 container_of(work, struct megasas_aen_event, hotplug_work.work);
6455 struct megasas_instance *instance = ev->instance;
6456 union megasas_evt_class_locale class_locale;
6457 struct Scsi_Host *host;
6458 struct scsi_device *sdev1;
6459 u16 pd_index = 0;
6460 u16 ld_index = 0;
6461 int i, j, doscan = 0;
6462 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
6463 int error;
6464
6465 if (!instance) {
6466 printk(KERN_ERR "invalid instance!\n");
6467 kfree(ev);
6468 return;
6469 }
6470
6471 /* Adjust event workqueue thread wait time for VF mode */
6472 if (instance->requestorId)
6473 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6474
6475 /* Don't run the event workqueue thread if OCR is running */
6476 for (i = 0; i < wait_time; i++) {
6477 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6478 break;
6479 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6480 printk(KERN_NOTICE "megasas: %s waiting for "
6481 "controller reset to finish for scsi%d\n",
6482 __func__, instance->host->host_no);
6483 }
6484 msleep(1000);
6485 }
6486
6487 instance->ev = NULL;
6488 host = instance->host;
6489 if (instance->evt_detail) {
6490
6491 switch (le32_to_cpu(instance->evt_detail->code)) {
6492 case MR_EVT_PD_INSERTED:
6493 if (megasas_get_pd_list(instance) == 0) {
6494 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6495 for (j = 0;
6496 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6497 j++) {
6498
6499 pd_index =
6500 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6501
6502 sdev1 =
6503 scsi_device_lookup(host, i, j, 0);
6504
6505 if (instance->pd_list[pd_index].driveState
6506 == MR_PD_STATE_SYSTEM) {
6507 if (!sdev1) {
6508 scsi_add_device(host, i, j, 0);
6509 }
6510
6511 if (sdev1)
6512 scsi_device_put(sdev1);
6513 }
6514 }
6515 }
6516 }
6517 doscan = 0;
6518 break;
6519
6520 case MR_EVT_PD_REMOVED:
6521 if (megasas_get_pd_list(instance) == 0) {
6522 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6523 for (j = 0;
6524 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6525 j++) {
6526
6527 pd_index =
6528 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6529
6530 sdev1 =
6531 scsi_device_lookup(host, i, j, 0);
6532
6533 if (instance->pd_list[pd_index].driveState
6534 == MR_PD_STATE_SYSTEM) {
6535 if (sdev1) {
6536 scsi_device_put(sdev1);
6537 }
6538 } else {
6539 if (sdev1) {
6540 scsi_remove_device(sdev1);
6541 scsi_device_put(sdev1);
6542 }
6543 }
6544 }
6545 }
6546 }
6547 doscan = 0;
6548 break;
6549
6550 case MR_EVT_LD_OFFLINE:
6551 case MR_EVT_CFG_CLEARED:
6552 case MR_EVT_LD_DELETED:
6553 if (!instance->requestorId ||
6554 (instance->requestorId &&
6555 megasas_get_ld_vf_affiliation(instance, 0))) {
6556 if (megasas_ld_list_query(instance,
6557 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6558 megasas_get_ld_list(instance);
6559 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6560 for (j = 0;
6561 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6562 j++) {
6563
6564 ld_index =
6565 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6566
6567 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6568
6569 if (instance->ld_ids[ld_index]
6570 != 0xff) {
6571 if (sdev1)
6572 scsi_device_put(sdev1);
6573 } else {
6574 if (sdev1) {
6575 scsi_remove_device(sdev1);
6576 scsi_device_put(sdev1);
6577 }
6578 }
6579 }
6580 }
6581 doscan = 0;
6582 }
6583 break;
6584 case MR_EVT_LD_CREATED:
6585 if (!instance->requestorId ||
6586 (instance->requestorId &&
6587 megasas_get_ld_vf_affiliation(instance, 0))) {
6588 if (megasas_ld_list_query(instance,
6589 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6590 megasas_get_ld_list(instance);
6591 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6592 for (j = 0;
6593 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6594 j++) {
6595 ld_index =
6596 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6597
6598 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6599
6600 if (instance->ld_ids[ld_index]
6601 != 0xff) {
6602 if (!sdev1)
6603 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6604 }
6605 if (sdev1)
6606 scsi_device_put(sdev1);
6607 }
6608 }
6609 doscan = 0;
6610 }
6611 break;
6612 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
6613 case MR_EVT_FOREIGN_CFG_IMPORTED:
6614 case MR_EVT_LD_STATE_CHANGE:
6615 doscan = 1;
6616 break;
6617 default:
6618 doscan = 0;
6619 break;
6620 }
6621 } else {
6622 printk(KERN_ERR "invalid evt_detail!\n");
6623 kfree(ev);
6624 return;
6625 }
6626
6627 if (doscan) {
6628 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6629 instance->host->host_no);
6630 if (megasas_get_pd_list(instance) == 0) {
6631 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6632 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6633 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6634 sdev1 = scsi_device_lookup(host, i, j, 0);
6635 if (instance->pd_list[pd_index].driveState ==
6636 MR_PD_STATE_SYSTEM) {
6637 if (!sdev1) {
6638 scsi_add_device(host, i, j, 0);
6639 }
6640 if (sdev1)
6641 scsi_device_put(sdev1);
6642 } else {
6643 if (sdev1) {
6644 scsi_remove_device(sdev1);
6645 scsi_device_put(sdev1);
6646 }
6647 }
6648 }
6649 }
6650 }
6651
6652 if (!instance->requestorId ||
6653 (instance->requestorId &&
6654 megasas_get_ld_vf_affiliation(instance, 0))) {
6655 if (megasas_ld_list_query(instance,
6656 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6657 megasas_get_ld_list(instance);
6658 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6659 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6660 j++) {
6661 ld_index =
6662 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6663
6664 sdev1 = scsi_device_lookup(host,
6665 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6666 if (instance->ld_ids[ld_index]
6667 != 0xff) {
6668 if (!sdev1)
6669 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6670 else
6671 scsi_device_put(sdev1);
6672 } else {
6673 if (sdev1) {
6674 scsi_remove_device(sdev1);
6675 scsi_device_put(sdev1);
6676 }
6677 }
6678 }
6679 }
6680 }
6681 }
6682
6683 if ( instance->aen_cmd != NULL ) {
6684 kfree(ev);
6685 return ;
6686 }
6687
6688 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
6689
6690 /* Register AEN with FW for latest sequence number plus 1 */
6691 class_locale.members.reserved = 0;
6692 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6693 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6694 mutex_lock(&instance->aen_mutex);
6695 error = megasas_register_aen(instance, seq_num,
6696 class_locale.word);
6697 mutex_unlock(&instance->aen_mutex);
6698
6699 if (error)
6700 printk(KERN_ERR "register aen failed error %x\n", error);
6701
6702 kfree(ev);
6703 }
6704
6705 /**
6706 * megasas_init - Driver load entry point
6707 */
6708 static int __init megasas_init(void)
6709 {
6710 int rval;
6711
6712 /*
6713 * Announce driver version and other information
6714 */
6715 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
6716 MEGASAS_EXT_VERSION);
6717
6718 spin_lock_init(&poll_aen_lock);
6719
6720 support_poll_for_event = 2;
6721 support_device_change = 1;
6722
6723 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6724
6725 /*
6726 * Register character device node
6727 */
6728 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6729
6730 if (rval < 0) {
6731 printk(KERN_DEBUG "megasas: failed to open device node\n");
6732 return rval;
6733 }
6734
6735 megasas_mgmt_majorno = rval;
6736
6737 /*
6738 * Register ourselves as PCI hotplug module
6739 */
6740 rval = pci_register_driver(&megasas_pci_driver);
6741
6742 if (rval) {
6743 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
6744 goto err_pcidrv;
6745 }
6746
6747 rval = driver_create_file(&megasas_pci_driver.driver,
6748 &driver_attr_version);
6749 if (rval)
6750 goto err_dcf_attr_ver;
6751 rval = driver_create_file(&megasas_pci_driver.driver,
6752 &driver_attr_release_date);
6753 if (rval)
6754 goto err_dcf_rel_date;
6755
6756 rval = driver_create_file(&megasas_pci_driver.driver,
6757 &driver_attr_support_poll_for_event);
6758 if (rval)
6759 goto err_dcf_support_poll_for_event;
6760
6761 rval = driver_create_file(&megasas_pci_driver.driver,
6762 &driver_attr_dbg_lvl);
6763 if (rval)
6764 goto err_dcf_dbg_lvl;
6765 rval = driver_create_file(&megasas_pci_driver.driver,
6766 &driver_attr_support_device_change);
6767 if (rval)
6768 goto err_dcf_support_device_change;
6769
6770 return rval;
6771
6772 err_dcf_support_device_change:
6773 driver_remove_file(&megasas_pci_driver.driver,
6774 &driver_attr_dbg_lvl);
6775 err_dcf_dbg_lvl:
6776 driver_remove_file(&megasas_pci_driver.driver,
6777 &driver_attr_support_poll_for_event);
6778
6779 err_dcf_support_poll_for_event:
6780 driver_remove_file(&megasas_pci_driver.driver,
6781 &driver_attr_release_date);
6782
6783 err_dcf_rel_date:
6784 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6785 err_dcf_attr_ver:
6786 pci_unregister_driver(&megasas_pci_driver);
6787 err_pcidrv:
6788 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6789 return rval;
6790 }
6791
6792 /**
6793 * megasas_exit - Driver unload entry point
6794 */
6795 static void __exit megasas_exit(void)
6796 {
6797 driver_remove_file(&megasas_pci_driver.driver,
6798 &driver_attr_dbg_lvl);
6799 driver_remove_file(&megasas_pci_driver.driver,
6800 &driver_attr_support_poll_for_event);
6801 driver_remove_file(&megasas_pci_driver.driver,
6802 &driver_attr_support_device_change);
6803 driver_remove_file(&megasas_pci_driver.driver,
6804 &driver_attr_release_date);
6805 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6806
6807 pci_unregister_driver(&megasas_pci_driver);
6808 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6809 }
6810
6811 module_init(megasas_init);
6812 module_exit(megasas_exit);
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