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Merge remote-tracking branch 'wireless/master' into mac80211
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_base.c
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2009-2011 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 : v00.00.06.15-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 MODULE_LICENSE("GPL");
75 MODULE_VERSION(MEGASAS_VERSION);
76 MODULE_AUTHOR("megaraidlinux@lsi.com");
77 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
78
79 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
80 static int megasas_get_pd_list(struct megasas_instance *instance);
81 static int megasas_issue_init_mfi(struct megasas_instance *instance);
82 static int megasas_register_aen(struct megasas_instance *instance,
83 u32 seq_num, u32 class_locale_word);
84 /*
85 * PCI ID table for all supported controllers
86 */
87 static struct pci_device_id megasas_pci_table[] = {
88
89 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
90 /* xscale IOP */
91 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
92 /* ppc IOP */
93 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
94 /* ppc IOP */
95 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
96 /* gen2*/
97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
98 /* gen2*/
99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
100 /* skinny*/
101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
102 /* skinny*/
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
104 /* xscale IOP, vega */
105 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
106 /* xscale IOP */
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
108 /* Fusion */
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
110 /* Invader */
111 {}
112 };
113
114 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
115
116 static int megasas_mgmt_majorno;
117 static struct megasas_mgmt_info megasas_mgmt_info;
118 static struct fasync_struct *megasas_async_queue;
119 static DEFINE_MUTEX(megasas_async_queue_mutex);
120
121 static int megasas_poll_wait_aen;
122 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
123 static u32 support_poll_for_event;
124 u32 megasas_dbg_lvl;
125 static u32 support_device_change;
126
127 /* define lock for aen poll */
128 spinlock_t poll_aen_lock;
129
130 void
131 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
132 u8 alt_status);
133 static u32
134 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
135 static int
136 megasas_adp_reset_gen2(struct megasas_instance *instance,
137 struct megasas_register_set __iomem *reg_set);
138 static irqreturn_t megasas_isr(int irq, void *devp);
139 static u32
140 megasas_init_adapter_mfi(struct megasas_instance *instance);
141 u32
142 megasas_build_and_issue_cmd(struct megasas_instance *instance,
143 struct scsi_cmnd *scmd);
144 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
145 void
146 megasas_release_fusion(struct megasas_instance *instance);
147 int
148 megasas_ioc_init_fusion(struct megasas_instance *instance);
149 void
150 megasas_free_cmds_fusion(struct megasas_instance *instance);
151 u8
152 megasas_get_map_info(struct megasas_instance *instance);
153 int
154 megasas_sync_map_info(struct megasas_instance *instance);
155 int
156 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
157 void megasas_reset_reply_desc(struct megasas_instance *instance);
158 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
159 struct LD_LOAD_BALANCE_INFO *lbInfo);
160 int megasas_reset_fusion(struct Scsi_Host *shost);
161 void megasas_fusion_ocr_wq(struct work_struct *work);
162
163 void
164 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
165 {
166 instance->instancet->fire_cmd(instance,
167 cmd->frame_phys_addr, 0, instance->reg_set);
168 }
169
170 /**
171 * megasas_get_cmd - Get a command from the free pool
172 * @instance: Adapter soft state
173 *
174 * Returns a free command from the pool
175 */
176 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
177 *instance)
178 {
179 unsigned long flags;
180 struct megasas_cmd *cmd = NULL;
181
182 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
183
184 if (!list_empty(&instance->cmd_pool)) {
185 cmd = list_entry((&instance->cmd_pool)->next,
186 struct megasas_cmd, list);
187 list_del_init(&cmd->list);
188 } else {
189 printk(KERN_ERR "megasas: Command pool empty!\n");
190 }
191
192 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
193 return cmd;
194 }
195
196 /**
197 * megasas_return_cmd - Return a cmd to free command pool
198 * @instance: Adapter soft state
199 * @cmd: Command packet to be returned to free command pool
200 */
201 inline void
202 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
203 {
204 unsigned long flags;
205
206 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
207
208 cmd->scmd = NULL;
209 cmd->frame_count = 0;
210 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
211 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
212 (reset_devices))
213 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
214 list_add_tail(&cmd->list, &instance->cmd_pool);
215
216 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
217 }
218
219
220 /**
221 * The following functions are defined for xscale
222 * (deviceid : 1064R, PERC5) controllers
223 */
224
225 /**
226 * megasas_enable_intr_xscale - Enables interrupts
227 * @regs: MFI register set
228 */
229 static inline void
230 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
231 {
232 writel(0, &(regs)->outbound_intr_mask);
233
234 /* Dummy readl to force pci flush */
235 readl(&regs->outbound_intr_mask);
236 }
237
238 /**
239 * megasas_disable_intr_xscale -Disables interrupt
240 * @regs: MFI register set
241 */
242 static inline void
243 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
244 {
245 u32 mask = 0x1f;
246 writel(mask, &regs->outbound_intr_mask);
247 /* Dummy readl to force pci flush */
248 readl(&regs->outbound_intr_mask);
249 }
250
251 /**
252 * megasas_read_fw_status_reg_xscale - returns the current FW status value
253 * @regs: MFI register set
254 */
255 static u32
256 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
257 {
258 return readl(&(regs)->outbound_msg_0);
259 }
260 /**
261 * megasas_clear_interrupt_xscale - Check & clear interrupt
262 * @regs: MFI register set
263 */
264 static int
265 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
266 {
267 u32 status;
268 u32 mfiStatus = 0;
269 /*
270 * Check if it is our interrupt
271 */
272 status = readl(&regs->outbound_intr_status);
273
274 if (status & MFI_OB_INTR_STATUS_MASK)
275 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
276 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
277 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
278
279 /*
280 * Clear the interrupt by writing back the same value
281 */
282 if (mfiStatus)
283 writel(status, &regs->outbound_intr_status);
284
285 /* Dummy readl to force pci flush */
286 readl(&regs->outbound_intr_status);
287
288 return mfiStatus;
289 }
290
291 /**
292 * megasas_fire_cmd_xscale - Sends command to the FW
293 * @frame_phys_addr : Physical address of cmd
294 * @frame_count : Number of frames for the command
295 * @regs : MFI register set
296 */
297 static inline void
298 megasas_fire_cmd_xscale(struct megasas_instance *instance,
299 dma_addr_t frame_phys_addr,
300 u32 frame_count,
301 struct megasas_register_set __iomem *regs)
302 {
303 unsigned long flags;
304 spin_lock_irqsave(&instance->hba_lock, flags);
305 writel((frame_phys_addr >> 3)|(frame_count),
306 &(regs)->inbound_queue_port);
307 spin_unlock_irqrestore(&instance->hba_lock, flags);
308 }
309
310 /**
311 * megasas_adp_reset_xscale - For controller reset
312 * @regs: MFI register set
313 */
314 static int
315 megasas_adp_reset_xscale(struct megasas_instance *instance,
316 struct megasas_register_set __iomem *regs)
317 {
318 u32 i;
319 u32 pcidata;
320 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
321
322 for (i = 0; i < 3; i++)
323 msleep(1000); /* sleep for 3 secs */
324 pcidata = 0;
325 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
326 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
327 if (pcidata & 0x2) {
328 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
329 pcidata &= ~0x2;
330 pci_write_config_dword(instance->pdev,
331 MFI_1068_PCSR_OFFSET, pcidata);
332
333 for (i = 0; i < 2; i++)
334 msleep(1000); /* need to wait 2 secs again */
335
336 pcidata = 0;
337 pci_read_config_dword(instance->pdev,
338 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
339 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
340 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
341 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
342 pcidata = 0;
343 pci_write_config_dword(instance->pdev,
344 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
345 }
346 }
347 return 0;
348 }
349
350 /**
351 * megasas_check_reset_xscale - For controller reset check
352 * @regs: MFI register set
353 */
354 static int
355 megasas_check_reset_xscale(struct megasas_instance *instance,
356 struct megasas_register_set __iomem *regs)
357 {
358 u32 consumer;
359 consumer = *instance->consumer;
360
361 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
362 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
363 return 1;
364 }
365 return 0;
366 }
367
368 static struct megasas_instance_template megasas_instance_template_xscale = {
369
370 .fire_cmd = megasas_fire_cmd_xscale,
371 .enable_intr = megasas_enable_intr_xscale,
372 .disable_intr = megasas_disable_intr_xscale,
373 .clear_intr = megasas_clear_intr_xscale,
374 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
375 .adp_reset = megasas_adp_reset_xscale,
376 .check_reset = megasas_check_reset_xscale,
377 .service_isr = megasas_isr,
378 .tasklet = megasas_complete_cmd_dpc,
379 .init_adapter = megasas_init_adapter_mfi,
380 .build_and_issue_cmd = megasas_build_and_issue_cmd,
381 .issue_dcmd = megasas_issue_dcmd,
382 };
383
384 /**
385 * This is the end of set of functions & definitions specific
386 * to xscale (deviceid : 1064R, PERC5) controllers
387 */
388
389 /**
390 * The following functions are defined for ppc (deviceid : 0x60)
391 * controllers
392 */
393
394 /**
395 * megasas_enable_intr_ppc - Enables interrupts
396 * @regs: MFI register set
397 */
398 static inline void
399 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
400 {
401 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
402
403 writel(~0x80000000, &(regs)->outbound_intr_mask);
404
405 /* Dummy readl to force pci flush */
406 readl(&regs->outbound_intr_mask);
407 }
408
409 /**
410 * megasas_disable_intr_ppc - Disable interrupt
411 * @regs: MFI register set
412 */
413 static inline void
414 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
415 {
416 u32 mask = 0xFFFFFFFF;
417 writel(mask, &regs->outbound_intr_mask);
418 /* Dummy readl to force pci flush */
419 readl(&regs->outbound_intr_mask);
420 }
421
422 /**
423 * megasas_read_fw_status_reg_ppc - returns the current FW status value
424 * @regs: MFI register set
425 */
426 static u32
427 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
428 {
429 return readl(&(regs)->outbound_scratch_pad);
430 }
431
432 /**
433 * megasas_clear_interrupt_ppc - Check & clear interrupt
434 * @regs: MFI register set
435 */
436 static int
437 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
438 {
439 u32 status, mfiStatus = 0;
440
441 /*
442 * Check if it is our interrupt
443 */
444 status = readl(&regs->outbound_intr_status);
445
446 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
447 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
448
449 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
450 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
451
452 /*
453 * Clear the interrupt by writing back the same value
454 */
455 writel(status, &regs->outbound_doorbell_clear);
456
457 /* Dummy readl to force pci flush */
458 readl(&regs->outbound_doorbell_clear);
459
460 return mfiStatus;
461 }
462
463 /**
464 * megasas_fire_cmd_ppc - Sends command to the FW
465 * @frame_phys_addr : Physical address of cmd
466 * @frame_count : Number of frames for the command
467 * @regs : MFI register set
468 */
469 static inline void
470 megasas_fire_cmd_ppc(struct megasas_instance *instance,
471 dma_addr_t frame_phys_addr,
472 u32 frame_count,
473 struct megasas_register_set __iomem *regs)
474 {
475 unsigned long flags;
476 spin_lock_irqsave(&instance->hba_lock, flags);
477 writel((frame_phys_addr | (frame_count<<1))|1,
478 &(regs)->inbound_queue_port);
479 spin_unlock_irqrestore(&instance->hba_lock, flags);
480 }
481
482 /**
483 * megasas_check_reset_ppc - For controller reset check
484 * @regs: MFI register set
485 */
486 static int
487 megasas_check_reset_ppc(struct megasas_instance *instance,
488 struct megasas_register_set __iomem *regs)
489 {
490 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
491 return 1;
492
493 return 0;
494 }
495
496 static struct megasas_instance_template megasas_instance_template_ppc = {
497
498 .fire_cmd = megasas_fire_cmd_ppc,
499 .enable_intr = megasas_enable_intr_ppc,
500 .disable_intr = megasas_disable_intr_ppc,
501 .clear_intr = megasas_clear_intr_ppc,
502 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
503 .adp_reset = megasas_adp_reset_xscale,
504 .check_reset = megasas_check_reset_ppc,
505 .service_isr = megasas_isr,
506 .tasklet = megasas_complete_cmd_dpc,
507 .init_adapter = megasas_init_adapter_mfi,
508 .build_and_issue_cmd = megasas_build_and_issue_cmd,
509 .issue_dcmd = megasas_issue_dcmd,
510 };
511
512 /**
513 * megasas_enable_intr_skinny - Enables interrupts
514 * @regs: MFI register set
515 */
516 static inline void
517 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
518 {
519 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
520
521 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
522
523 /* Dummy readl to force pci flush */
524 readl(&regs->outbound_intr_mask);
525 }
526
527 /**
528 * megasas_disable_intr_skinny - Disables interrupt
529 * @regs: MFI register set
530 */
531 static inline void
532 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
533 {
534 u32 mask = 0xFFFFFFFF;
535 writel(mask, &regs->outbound_intr_mask);
536 /* Dummy readl to force pci flush */
537 readl(&regs->outbound_intr_mask);
538 }
539
540 /**
541 * megasas_read_fw_status_reg_skinny - returns the current FW status value
542 * @regs: MFI register set
543 */
544 static u32
545 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
546 {
547 return readl(&(regs)->outbound_scratch_pad);
548 }
549
550 /**
551 * megasas_clear_interrupt_skinny - Check & clear interrupt
552 * @regs: MFI register set
553 */
554 static int
555 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
556 {
557 u32 status;
558 u32 mfiStatus = 0;
559
560 /*
561 * Check if it is our interrupt
562 */
563 status = readl(&regs->outbound_intr_status);
564
565 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
566 return 0;
567 }
568
569 /*
570 * Check if it is our interrupt
571 */
572 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) ==
573 MFI_STATE_FAULT) {
574 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
575 } else
576 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
577
578 /*
579 * Clear the interrupt by writing back the same value
580 */
581 writel(status, &regs->outbound_intr_status);
582
583 /*
584 * dummy read to flush PCI
585 */
586 readl(&regs->outbound_intr_status);
587
588 return mfiStatus;
589 }
590
591 /**
592 * megasas_fire_cmd_skinny - Sends command to the FW
593 * @frame_phys_addr : Physical address of cmd
594 * @frame_count : Number of frames for the command
595 * @regs : MFI register set
596 */
597 static inline void
598 megasas_fire_cmd_skinny(struct megasas_instance *instance,
599 dma_addr_t frame_phys_addr,
600 u32 frame_count,
601 struct megasas_register_set __iomem *regs)
602 {
603 unsigned long flags;
604 spin_lock_irqsave(&instance->hba_lock, flags);
605 writel(0, &(regs)->inbound_high_queue_port);
606 writel((frame_phys_addr | (frame_count<<1))|1,
607 &(regs)->inbound_low_queue_port);
608 spin_unlock_irqrestore(&instance->hba_lock, flags);
609 }
610
611 /**
612 * megasas_check_reset_skinny - For controller reset check
613 * @regs: MFI register set
614 */
615 static int
616 megasas_check_reset_skinny(struct megasas_instance *instance,
617 struct megasas_register_set __iomem *regs)
618 {
619 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
620 return 1;
621
622 return 0;
623 }
624
625 static struct megasas_instance_template megasas_instance_template_skinny = {
626
627 .fire_cmd = megasas_fire_cmd_skinny,
628 .enable_intr = megasas_enable_intr_skinny,
629 .disable_intr = megasas_disable_intr_skinny,
630 .clear_intr = megasas_clear_intr_skinny,
631 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
632 .adp_reset = megasas_adp_reset_gen2,
633 .check_reset = megasas_check_reset_skinny,
634 .service_isr = megasas_isr,
635 .tasklet = megasas_complete_cmd_dpc,
636 .init_adapter = megasas_init_adapter_mfi,
637 .build_and_issue_cmd = megasas_build_and_issue_cmd,
638 .issue_dcmd = megasas_issue_dcmd,
639 };
640
641
642 /**
643 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
644 * controllers
645 */
646
647 /**
648 * megasas_enable_intr_gen2 - Enables interrupts
649 * @regs: MFI register set
650 */
651 static inline void
652 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
653 {
654 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
655
656 /* write ~0x00000005 (4 & 1) to the intr mask*/
657 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
658
659 /* Dummy readl to force pci flush */
660 readl(&regs->outbound_intr_mask);
661 }
662
663 /**
664 * megasas_disable_intr_gen2 - Disables interrupt
665 * @regs: MFI register set
666 */
667 static inline void
668 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
669 {
670 u32 mask = 0xFFFFFFFF;
671 writel(mask, &regs->outbound_intr_mask);
672 /* Dummy readl to force pci flush */
673 readl(&regs->outbound_intr_mask);
674 }
675
676 /**
677 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
678 * @regs: MFI register set
679 */
680 static u32
681 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
682 {
683 return readl(&(regs)->outbound_scratch_pad);
684 }
685
686 /**
687 * megasas_clear_interrupt_gen2 - Check & clear interrupt
688 * @regs: MFI register set
689 */
690 static int
691 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
692 {
693 u32 status;
694 u32 mfiStatus = 0;
695 /*
696 * Check if it is our interrupt
697 */
698 status = readl(&regs->outbound_intr_status);
699
700 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
701 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
702 }
703 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
704 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
705 }
706
707 /*
708 * Clear the interrupt by writing back the same value
709 */
710 if (mfiStatus)
711 writel(status, &regs->outbound_doorbell_clear);
712
713 /* Dummy readl to force pci flush */
714 readl(&regs->outbound_intr_status);
715
716 return mfiStatus;
717 }
718 /**
719 * megasas_fire_cmd_gen2 - Sends command to the FW
720 * @frame_phys_addr : Physical address of cmd
721 * @frame_count : Number of frames for the command
722 * @regs : MFI register set
723 */
724 static inline void
725 megasas_fire_cmd_gen2(struct megasas_instance *instance,
726 dma_addr_t frame_phys_addr,
727 u32 frame_count,
728 struct megasas_register_set __iomem *regs)
729 {
730 unsigned long flags;
731 spin_lock_irqsave(&instance->hba_lock, flags);
732 writel((frame_phys_addr | (frame_count<<1))|1,
733 &(regs)->inbound_queue_port);
734 spin_unlock_irqrestore(&instance->hba_lock, flags);
735 }
736
737 /**
738 * megasas_adp_reset_gen2 - For controller reset
739 * @regs: MFI register set
740 */
741 static int
742 megasas_adp_reset_gen2(struct megasas_instance *instance,
743 struct megasas_register_set __iomem *reg_set)
744 {
745 u32 retry = 0 ;
746 u32 HostDiag;
747 u32 *seq_offset = &reg_set->seq_offset;
748 u32 *hostdiag_offset = &reg_set->host_diag;
749
750 if (instance->instancet == &megasas_instance_template_skinny) {
751 seq_offset = &reg_set->fusion_seq_offset;
752 hostdiag_offset = &reg_set->fusion_host_diag;
753 }
754
755 writel(0, seq_offset);
756 writel(4, seq_offset);
757 writel(0xb, seq_offset);
758 writel(2, seq_offset);
759 writel(7, seq_offset);
760 writel(0xd, seq_offset);
761
762 msleep(1000);
763
764 HostDiag = (u32)readl(hostdiag_offset);
765
766 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
767 msleep(100);
768 HostDiag = (u32)readl(hostdiag_offset);
769 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
770 retry, HostDiag);
771
772 if (retry++ >= 100)
773 return 1;
774
775 }
776
777 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
778
779 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
780
781 ssleep(10);
782
783 HostDiag = (u32)readl(hostdiag_offset);
784 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
785 msleep(100);
786 HostDiag = (u32)readl(hostdiag_offset);
787 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
788 retry, HostDiag);
789
790 if (retry++ >= 1000)
791 return 1;
792
793 }
794 return 0;
795 }
796
797 /**
798 * megasas_check_reset_gen2 - For controller reset check
799 * @regs: MFI register set
800 */
801 static int
802 megasas_check_reset_gen2(struct megasas_instance *instance,
803 struct megasas_register_set __iomem *regs)
804 {
805 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
806 return 1;
807 }
808
809 return 0;
810 }
811
812 static struct megasas_instance_template megasas_instance_template_gen2 = {
813
814 .fire_cmd = megasas_fire_cmd_gen2,
815 .enable_intr = megasas_enable_intr_gen2,
816 .disable_intr = megasas_disable_intr_gen2,
817 .clear_intr = megasas_clear_intr_gen2,
818 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
819 .adp_reset = megasas_adp_reset_gen2,
820 .check_reset = megasas_check_reset_gen2,
821 .service_isr = megasas_isr,
822 .tasklet = megasas_complete_cmd_dpc,
823 .init_adapter = megasas_init_adapter_mfi,
824 .build_and_issue_cmd = megasas_build_and_issue_cmd,
825 .issue_dcmd = megasas_issue_dcmd,
826 };
827
828 /**
829 * This is the end of set of functions & definitions
830 * specific to gen2 (deviceid : 0x78, 0x79) controllers
831 */
832
833 /*
834 * Template added for TB (Fusion)
835 */
836 extern struct megasas_instance_template megasas_instance_template_fusion;
837
838 /**
839 * megasas_issue_polled - Issues a polling command
840 * @instance: Adapter soft state
841 * @cmd: Command packet to be issued
842 *
843 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
844 */
845 int
846 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
847 {
848
849 struct megasas_header *frame_hdr = &cmd->frame->hdr;
850
851 frame_hdr->cmd_status = 0xFF;
852 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
853
854 /*
855 * Issue the frame using inbound queue port
856 */
857 instance->instancet->issue_dcmd(instance, cmd);
858
859 /*
860 * Wait for cmd_status to change
861 */
862 return wait_and_poll(instance, cmd);
863 }
864
865 /**
866 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
867 * @instance: Adapter soft state
868 * @cmd: Command to be issued
869 *
870 * This function waits on an event for the command to be returned from ISR.
871 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
872 * Used to issue ioctl commands.
873 */
874 static int
875 megasas_issue_blocked_cmd(struct megasas_instance *instance,
876 struct megasas_cmd *cmd)
877 {
878 cmd->cmd_status = ENODATA;
879
880 instance->instancet->issue_dcmd(instance, cmd);
881
882 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
883
884 return 0;
885 }
886
887 /**
888 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
889 * @instance: Adapter soft state
890 * @cmd_to_abort: Previously issued cmd to be aborted
891 *
892 * MFI firmware can abort previously issued AEN command (automatic event
893 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
894 * cmd and waits for return status.
895 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
896 */
897 static int
898 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
899 struct megasas_cmd *cmd_to_abort)
900 {
901 struct megasas_cmd *cmd;
902 struct megasas_abort_frame *abort_fr;
903
904 cmd = megasas_get_cmd(instance);
905
906 if (!cmd)
907 return -1;
908
909 abort_fr = &cmd->frame->abort;
910
911 /*
912 * Prepare and issue the abort frame
913 */
914 abort_fr->cmd = MFI_CMD_ABORT;
915 abort_fr->cmd_status = 0xFF;
916 abort_fr->flags = 0;
917 abort_fr->abort_context = cmd_to_abort->index;
918 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
919 abort_fr->abort_mfi_phys_addr_hi = 0;
920
921 cmd->sync_cmd = 1;
922 cmd->cmd_status = 0xFF;
923
924 instance->instancet->issue_dcmd(instance, cmd);
925
926 /*
927 * Wait for this cmd to complete
928 */
929 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
930 cmd->sync_cmd = 0;
931
932 megasas_return_cmd(instance, cmd);
933 return 0;
934 }
935
936 /**
937 * megasas_make_sgl32 - Prepares 32-bit SGL
938 * @instance: Adapter soft state
939 * @scp: SCSI command from the mid-layer
940 * @mfi_sgl: SGL to be filled in
941 *
942 * If successful, this function returns the number of SG elements. Otherwise,
943 * it returnes -1.
944 */
945 static int
946 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
947 union megasas_sgl *mfi_sgl)
948 {
949 int i;
950 int sge_count;
951 struct scatterlist *os_sgl;
952
953 sge_count = scsi_dma_map(scp);
954 BUG_ON(sge_count < 0);
955
956 if (sge_count) {
957 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
958 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
959 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
960 }
961 }
962 return sge_count;
963 }
964
965 /**
966 * megasas_make_sgl64 - Prepares 64-bit SGL
967 * @instance: Adapter soft state
968 * @scp: SCSI command from the mid-layer
969 * @mfi_sgl: SGL to be filled in
970 *
971 * If successful, this function returns the number of SG elements. Otherwise,
972 * it returnes -1.
973 */
974 static int
975 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
976 union megasas_sgl *mfi_sgl)
977 {
978 int i;
979 int sge_count;
980 struct scatterlist *os_sgl;
981
982 sge_count = scsi_dma_map(scp);
983 BUG_ON(sge_count < 0);
984
985 if (sge_count) {
986 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
987 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
988 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
989 }
990 }
991 return sge_count;
992 }
993
994 /**
995 * megasas_make_sgl_skinny - Prepares IEEE SGL
996 * @instance: Adapter soft state
997 * @scp: SCSI command from the mid-layer
998 * @mfi_sgl: SGL to be filled in
999 *
1000 * If successful, this function returns the number of SG elements. Otherwise,
1001 * it returnes -1.
1002 */
1003 static int
1004 megasas_make_sgl_skinny(struct megasas_instance *instance,
1005 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1006 {
1007 int i;
1008 int sge_count;
1009 struct scatterlist *os_sgl;
1010
1011 sge_count = scsi_dma_map(scp);
1012
1013 if (sge_count) {
1014 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1015 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1016 mfi_sgl->sge_skinny[i].phys_addr =
1017 sg_dma_address(os_sgl);
1018 mfi_sgl->sge_skinny[i].flag = 0;
1019 }
1020 }
1021 return sge_count;
1022 }
1023
1024 /**
1025 * megasas_get_frame_count - Computes the number of frames
1026 * @frame_type : type of frame- io or pthru frame
1027 * @sge_count : number of sg elements
1028 *
1029 * Returns the number of frames required for numnber of sge's (sge_count)
1030 */
1031
1032 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1033 u8 sge_count, u8 frame_type)
1034 {
1035 int num_cnt;
1036 int sge_bytes;
1037 u32 sge_sz;
1038 u32 frame_count=0;
1039
1040 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1041 sizeof(struct megasas_sge32);
1042
1043 if (instance->flag_ieee) {
1044 sge_sz = sizeof(struct megasas_sge_skinny);
1045 }
1046
1047 /*
1048 * Main frame can contain 2 SGEs for 64-bit SGLs and
1049 * 3 SGEs for 32-bit SGLs for ldio &
1050 * 1 SGEs for 64-bit SGLs and
1051 * 2 SGEs for 32-bit SGLs for pthru frame
1052 */
1053 if (unlikely(frame_type == PTHRU_FRAME)) {
1054 if (instance->flag_ieee == 1) {
1055 num_cnt = sge_count - 1;
1056 } else if (IS_DMA64)
1057 num_cnt = sge_count - 1;
1058 else
1059 num_cnt = sge_count - 2;
1060 } else {
1061 if (instance->flag_ieee == 1) {
1062 num_cnt = sge_count - 1;
1063 } else if (IS_DMA64)
1064 num_cnt = sge_count - 2;
1065 else
1066 num_cnt = sge_count - 3;
1067 }
1068
1069 if(num_cnt>0){
1070 sge_bytes = sge_sz * num_cnt;
1071
1072 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1073 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1074 }
1075 /* Main frame */
1076 frame_count +=1;
1077
1078 if (frame_count > 7)
1079 frame_count = 8;
1080 return frame_count;
1081 }
1082
1083 /**
1084 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1085 * @instance: Adapter soft state
1086 * @scp: SCSI command
1087 * @cmd: Command to be prepared in
1088 *
1089 * This function prepares CDB commands. These are typcially pass-through
1090 * commands to the devices.
1091 */
1092 static int
1093 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1094 struct megasas_cmd *cmd)
1095 {
1096 u32 is_logical;
1097 u32 device_id;
1098 u16 flags = 0;
1099 struct megasas_pthru_frame *pthru;
1100
1101 is_logical = MEGASAS_IS_LOGICAL(scp);
1102 device_id = MEGASAS_DEV_INDEX(instance, scp);
1103 pthru = (struct megasas_pthru_frame *)cmd->frame;
1104
1105 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1106 flags = MFI_FRAME_DIR_WRITE;
1107 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1108 flags = MFI_FRAME_DIR_READ;
1109 else if (scp->sc_data_direction == PCI_DMA_NONE)
1110 flags = MFI_FRAME_DIR_NONE;
1111
1112 if (instance->flag_ieee == 1) {
1113 flags |= MFI_FRAME_IEEE;
1114 }
1115
1116 /*
1117 * Prepare the DCDB frame
1118 */
1119 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1120 pthru->cmd_status = 0x0;
1121 pthru->scsi_status = 0x0;
1122 pthru->target_id = device_id;
1123 pthru->lun = scp->device->lun;
1124 pthru->cdb_len = scp->cmd_len;
1125 pthru->timeout = 0;
1126 pthru->pad_0 = 0;
1127 pthru->flags = flags;
1128 pthru->data_xfer_len = scsi_bufflen(scp);
1129
1130 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1131
1132 /*
1133 * If the command is for the tape device, set the
1134 * pthru timeout to the os layer timeout value.
1135 */
1136 if (scp->device->type == TYPE_TAPE) {
1137 if ((scp->request->timeout / HZ) > 0xFFFF)
1138 pthru->timeout = 0xFFFF;
1139 else
1140 pthru->timeout = scp->request->timeout / HZ;
1141 }
1142
1143 /*
1144 * Construct SGL
1145 */
1146 if (instance->flag_ieee == 1) {
1147 pthru->flags |= MFI_FRAME_SGL64;
1148 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1149 &pthru->sgl);
1150 } else if (IS_DMA64) {
1151 pthru->flags |= MFI_FRAME_SGL64;
1152 pthru->sge_count = megasas_make_sgl64(instance, scp,
1153 &pthru->sgl);
1154 } else
1155 pthru->sge_count = megasas_make_sgl32(instance, scp,
1156 &pthru->sgl);
1157
1158 if (pthru->sge_count > instance->max_num_sge) {
1159 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1160 pthru->sge_count);
1161 return 0;
1162 }
1163
1164 /*
1165 * Sense info specific
1166 */
1167 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1168 pthru->sense_buf_phys_addr_hi = 0;
1169 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1170
1171 /*
1172 * Compute the total number of frames this command consumes. FW uses
1173 * this number to pull sufficient number of frames from host memory.
1174 */
1175 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1176 PTHRU_FRAME);
1177
1178 return cmd->frame_count;
1179 }
1180
1181 /**
1182 * megasas_build_ldio - Prepares IOs to logical devices
1183 * @instance: Adapter soft state
1184 * @scp: SCSI command
1185 * @cmd: Command to be prepared
1186 *
1187 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1188 */
1189 static int
1190 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1191 struct megasas_cmd *cmd)
1192 {
1193 u32 device_id;
1194 u8 sc = scp->cmnd[0];
1195 u16 flags = 0;
1196 struct megasas_io_frame *ldio;
1197
1198 device_id = MEGASAS_DEV_INDEX(instance, scp);
1199 ldio = (struct megasas_io_frame *)cmd->frame;
1200
1201 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1202 flags = MFI_FRAME_DIR_WRITE;
1203 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1204 flags = MFI_FRAME_DIR_READ;
1205
1206 if (instance->flag_ieee == 1) {
1207 flags |= MFI_FRAME_IEEE;
1208 }
1209
1210 /*
1211 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1212 */
1213 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1214 ldio->cmd_status = 0x0;
1215 ldio->scsi_status = 0x0;
1216 ldio->target_id = device_id;
1217 ldio->timeout = 0;
1218 ldio->reserved_0 = 0;
1219 ldio->pad_0 = 0;
1220 ldio->flags = flags;
1221 ldio->start_lba_hi = 0;
1222 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1223
1224 /*
1225 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1226 */
1227 if (scp->cmd_len == 6) {
1228 ldio->lba_count = (u32) scp->cmnd[4];
1229 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1230 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1231
1232 ldio->start_lba_lo &= 0x1FFFFF;
1233 }
1234
1235 /*
1236 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1237 */
1238 else if (scp->cmd_len == 10) {
1239 ldio->lba_count = (u32) scp->cmnd[8] |
1240 ((u32) scp->cmnd[7] << 8);
1241 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1242 ((u32) scp->cmnd[3] << 16) |
1243 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1244 }
1245
1246 /*
1247 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1248 */
1249 else if (scp->cmd_len == 12) {
1250 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1251 ((u32) scp->cmnd[7] << 16) |
1252 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1253
1254 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1255 ((u32) scp->cmnd[3] << 16) |
1256 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1257 }
1258
1259 /*
1260 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1261 */
1262 else if (scp->cmd_len == 16) {
1263 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1264 ((u32) scp->cmnd[11] << 16) |
1265 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1266
1267 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1268 ((u32) scp->cmnd[7] << 16) |
1269 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1270
1271 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1272 ((u32) scp->cmnd[3] << 16) |
1273 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1274
1275 }
1276
1277 /*
1278 * Construct SGL
1279 */
1280 if (instance->flag_ieee) {
1281 ldio->flags |= MFI_FRAME_SGL64;
1282 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1283 &ldio->sgl);
1284 } else if (IS_DMA64) {
1285 ldio->flags |= MFI_FRAME_SGL64;
1286 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1287 } else
1288 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1289
1290 if (ldio->sge_count > instance->max_num_sge) {
1291 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1292 ldio->sge_count);
1293 return 0;
1294 }
1295
1296 /*
1297 * Sense info specific
1298 */
1299 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1300 ldio->sense_buf_phys_addr_hi = 0;
1301 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1302
1303 /*
1304 * Compute the total number of frames this command consumes. FW uses
1305 * this number to pull sufficient number of frames from host memory.
1306 */
1307 cmd->frame_count = megasas_get_frame_count(instance,
1308 ldio->sge_count, IO_FRAME);
1309
1310 return cmd->frame_count;
1311 }
1312
1313 /**
1314 * megasas_is_ldio - Checks if the cmd is for logical drive
1315 * @scmd: SCSI command
1316 *
1317 * Called by megasas_queue_command to find out if the command to be queued
1318 * is a logical drive command
1319 */
1320 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1321 {
1322 if (!MEGASAS_IS_LOGICAL(cmd))
1323 return 0;
1324 switch (cmd->cmnd[0]) {
1325 case READ_10:
1326 case WRITE_10:
1327 case READ_12:
1328 case WRITE_12:
1329 case READ_6:
1330 case WRITE_6:
1331 case READ_16:
1332 case WRITE_16:
1333 return 1;
1334 default:
1335 return 0;
1336 }
1337 }
1338
1339 /**
1340 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1341 * in FW
1342 * @instance: Adapter soft state
1343 */
1344 static inline void
1345 megasas_dump_pending_frames(struct megasas_instance *instance)
1346 {
1347 struct megasas_cmd *cmd;
1348 int i,n;
1349 union megasas_sgl *mfi_sgl;
1350 struct megasas_io_frame *ldio;
1351 struct megasas_pthru_frame *pthru;
1352 u32 sgcount;
1353 u32 max_cmd = instance->max_fw_cmds;
1354
1355 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1356 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1357 if (IS_DMA64)
1358 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1359 else
1360 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1361
1362 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1363 for (i = 0; i < max_cmd; i++) {
1364 cmd = instance->cmd_list[i];
1365 if(!cmd->scmd)
1366 continue;
1367 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1368 if (megasas_is_ldio(cmd->scmd)){
1369 ldio = (struct megasas_io_frame *)cmd->frame;
1370 mfi_sgl = &ldio->sgl;
1371 sgcount = ldio->sge_count;
1372 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
1373 }
1374 else {
1375 pthru = (struct megasas_pthru_frame *) cmd->frame;
1376 mfi_sgl = &pthru->sgl;
1377 sgcount = pthru->sge_count;
1378 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
1379 }
1380 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1381 for (n = 0; n < sgcount; n++){
1382 if (IS_DMA64)
1383 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
1384 else
1385 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1386 }
1387 }
1388 printk(KERN_ERR "\n");
1389 } /*for max_cmd*/
1390 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1391 for (i = 0; i < max_cmd; i++) {
1392
1393 cmd = instance->cmd_list[i];
1394
1395 if(cmd->sync_cmd == 1){
1396 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1397 }
1398 }
1399 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1400 }
1401
1402 u32
1403 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1404 struct scsi_cmnd *scmd)
1405 {
1406 struct megasas_cmd *cmd;
1407 u32 frame_count;
1408
1409 cmd = megasas_get_cmd(instance);
1410 if (!cmd)
1411 return SCSI_MLQUEUE_HOST_BUSY;
1412
1413 /*
1414 * Logical drive command
1415 */
1416 if (megasas_is_ldio(scmd))
1417 frame_count = megasas_build_ldio(instance, scmd, cmd);
1418 else
1419 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1420
1421 if (!frame_count)
1422 goto out_return_cmd;
1423
1424 cmd->scmd = scmd;
1425 scmd->SCp.ptr = (char *)cmd;
1426
1427 /*
1428 * Issue the command to the FW
1429 */
1430 atomic_inc(&instance->fw_outstanding);
1431
1432 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1433 cmd->frame_count-1, instance->reg_set);
1434
1435 return 0;
1436 out_return_cmd:
1437 megasas_return_cmd(instance, cmd);
1438 return 1;
1439 }
1440
1441
1442 /**
1443 * megasas_queue_command - Queue entry point
1444 * @scmd: SCSI command to be queued
1445 * @done: Callback entry point
1446 */
1447 static int
1448 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1449 {
1450 struct megasas_instance *instance;
1451 unsigned long flags;
1452
1453 instance = (struct megasas_instance *)
1454 scmd->device->host->hostdata;
1455
1456 if (instance->issuepend_done == 0)
1457 return SCSI_MLQUEUE_HOST_BUSY;
1458
1459 spin_lock_irqsave(&instance->hba_lock, flags);
1460 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1461 spin_unlock_irqrestore(&instance->hba_lock, flags);
1462 return SCSI_MLQUEUE_HOST_BUSY;
1463 }
1464
1465 spin_unlock_irqrestore(&instance->hba_lock, flags);
1466
1467 scmd->scsi_done = done;
1468 scmd->result = 0;
1469
1470 if (MEGASAS_IS_LOGICAL(scmd) &&
1471 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1472 scmd->result = DID_BAD_TARGET << 16;
1473 goto out_done;
1474 }
1475
1476 switch (scmd->cmnd[0]) {
1477 case SYNCHRONIZE_CACHE:
1478 /*
1479 * FW takes care of flush cache on its own
1480 * No need to send it down
1481 */
1482 scmd->result = DID_OK << 16;
1483 goto out_done;
1484 default:
1485 break;
1486 }
1487
1488 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1489 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1490 return SCSI_MLQUEUE_HOST_BUSY;
1491 }
1492
1493 return 0;
1494
1495 out_done:
1496 done(scmd);
1497 return 0;
1498 }
1499
1500 static DEF_SCSI_QCMD(megasas_queue_command)
1501
1502 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1503 {
1504 int i;
1505
1506 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1507
1508 if ((megasas_mgmt_info.instance[i]) &&
1509 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1510 return megasas_mgmt_info.instance[i];
1511 }
1512
1513 return NULL;
1514 }
1515
1516 static int megasas_slave_configure(struct scsi_device *sdev)
1517 {
1518 u16 pd_index = 0;
1519 struct megasas_instance *instance ;
1520
1521 instance = megasas_lookup_instance(sdev->host->host_no);
1522
1523 /*
1524 * Don't export physical disk devices to the disk driver.
1525 *
1526 * FIXME: Currently we don't export them to the midlayer at all.
1527 * That will be fixed once LSI engineers have audited the
1528 * firmware for possible issues.
1529 */
1530 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1531 sdev->type == TYPE_DISK) {
1532 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1533 sdev->id;
1534 if (instance->pd_list[pd_index].driveState ==
1535 MR_PD_STATE_SYSTEM) {
1536 blk_queue_rq_timeout(sdev->request_queue,
1537 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1538 return 0;
1539 }
1540 return -ENXIO;
1541 }
1542
1543 /*
1544 * The RAID firmware may require extended timeouts.
1545 */
1546 blk_queue_rq_timeout(sdev->request_queue,
1547 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1548 return 0;
1549 }
1550
1551 static int megasas_slave_alloc(struct scsi_device *sdev)
1552 {
1553 u16 pd_index = 0;
1554 struct megasas_instance *instance ;
1555 instance = megasas_lookup_instance(sdev->host->host_no);
1556 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1557 (sdev->type == TYPE_DISK)) {
1558 /*
1559 * Open the OS scan to the SYSTEM PD
1560 */
1561 pd_index =
1562 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1563 sdev->id;
1564 if ((instance->pd_list[pd_index].driveState ==
1565 MR_PD_STATE_SYSTEM) &&
1566 (instance->pd_list[pd_index].driveType ==
1567 TYPE_DISK)) {
1568 return 0;
1569 }
1570 return -ENXIO;
1571 }
1572 return 0;
1573 }
1574
1575 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1576 {
1577 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1578 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1579 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1580 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
1581 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1582 } else {
1583 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1584 }
1585 }
1586
1587 /**
1588 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1589 * restored to max value
1590 * @instance: Adapter soft state
1591 *
1592 */
1593 void
1594 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1595 {
1596 unsigned long flags;
1597 if (instance->flag & MEGASAS_FW_BUSY
1598 && time_after(jiffies, instance->last_time + 5 * HZ)
1599 && atomic_read(&instance->fw_outstanding) < 17) {
1600
1601 spin_lock_irqsave(instance->host->host_lock, flags);
1602 instance->flag &= ~MEGASAS_FW_BUSY;
1603 if ((instance->pdev->device ==
1604 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1605 (instance->pdev->device ==
1606 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1607 instance->host->can_queue =
1608 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1609 } else
1610 instance->host->can_queue =
1611 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1612
1613 spin_unlock_irqrestore(instance->host->host_lock, flags);
1614 }
1615 }
1616
1617 /**
1618 * megasas_complete_cmd_dpc - Returns FW's controller structure
1619 * @instance_addr: Address of adapter soft state
1620 *
1621 * Tasklet to complete cmds
1622 */
1623 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1624 {
1625 u32 producer;
1626 u32 consumer;
1627 u32 context;
1628 struct megasas_cmd *cmd;
1629 struct megasas_instance *instance =
1630 (struct megasas_instance *)instance_addr;
1631 unsigned long flags;
1632
1633 /* If we have already declared adapter dead, donot complete cmds */
1634 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1635 return;
1636
1637 spin_lock_irqsave(&instance->completion_lock, flags);
1638
1639 producer = *instance->producer;
1640 consumer = *instance->consumer;
1641
1642 while (consumer != producer) {
1643 context = instance->reply_queue[consumer];
1644 if (context >= instance->max_fw_cmds) {
1645 printk(KERN_ERR "Unexpected context value %x\n",
1646 context);
1647 BUG();
1648 }
1649
1650 cmd = instance->cmd_list[context];
1651
1652 megasas_complete_cmd(instance, cmd, DID_OK);
1653
1654 consumer++;
1655 if (consumer == (instance->max_fw_cmds + 1)) {
1656 consumer = 0;
1657 }
1658 }
1659
1660 *instance->consumer = producer;
1661
1662 spin_unlock_irqrestore(&instance->completion_lock, flags);
1663
1664 /*
1665 * Check if we can restore can_queue
1666 */
1667 megasas_check_and_restore_queue_depth(instance);
1668 }
1669
1670 static void
1671 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1672
1673 static void
1674 process_fw_state_change_wq(struct work_struct *work);
1675
1676 void megasas_do_ocr(struct megasas_instance *instance)
1677 {
1678 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1679 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1680 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1681 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1682 }
1683 instance->instancet->disable_intr(instance->reg_set);
1684 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1685 instance->issuepend_done = 0;
1686
1687 atomic_set(&instance->fw_outstanding, 0);
1688 megasas_internal_reset_defer_cmds(instance);
1689 process_fw_state_change_wq(&instance->work_init);
1690 }
1691
1692 /**
1693 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1694 * @instance: Adapter soft state
1695 *
1696 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1697 * complete all its outstanding commands. Returns error if one or more IOs
1698 * are pending after this time period. It also marks the controller dead.
1699 */
1700 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1701 {
1702 int i;
1703 u32 reset_index;
1704 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1705 u8 adprecovery;
1706 unsigned long flags;
1707 struct list_head clist_local;
1708 struct megasas_cmd *reset_cmd;
1709 u32 fw_state;
1710 u8 kill_adapter_flag;
1711
1712 spin_lock_irqsave(&instance->hba_lock, flags);
1713 adprecovery = instance->adprecovery;
1714 spin_unlock_irqrestore(&instance->hba_lock, flags);
1715
1716 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1717
1718 INIT_LIST_HEAD(&clist_local);
1719 spin_lock_irqsave(&instance->hba_lock, flags);
1720 list_splice_init(&instance->internal_reset_pending_q,
1721 &clist_local);
1722 spin_unlock_irqrestore(&instance->hba_lock, flags);
1723
1724 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1725 for (i = 0; i < wait_time; i++) {
1726 msleep(1000);
1727 spin_lock_irqsave(&instance->hba_lock, flags);
1728 adprecovery = instance->adprecovery;
1729 spin_unlock_irqrestore(&instance->hba_lock, flags);
1730 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1731 break;
1732 }
1733
1734 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1735 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1736 spin_lock_irqsave(&instance->hba_lock, flags);
1737 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1738 spin_unlock_irqrestore(&instance->hba_lock, flags);
1739 return FAILED;
1740 }
1741
1742 reset_index = 0;
1743 while (!list_empty(&clist_local)) {
1744 reset_cmd = list_entry((&clist_local)->next,
1745 struct megasas_cmd, list);
1746 list_del_init(&reset_cmd->list);
1747 if (reset_cmd->scmd) {
1748 reset_cmd->scmd->result = DID_RESET << 16;
1749 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1750 reset_index, reset_cmd,
1751 reset_cmd->scmd->cmnd[0]);
1752
1753 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1754 megasas_return_cmd(instance, reset_cmd);
1755 } else if (reset_cmd->sync_cmd) {
1756 printk(KERN_NOTICE "megasas:%p synch cmds"
1757 "reset queue\n",
1758 reset_cmd);
1759
1760 reset_cmd->cmd_status = ENODATA;
1761 instance->instancet->fire_cmd(instance,
1762 reset_cmd->frame_phys_addr,
1763 0, instance->reg_set);
1764 } else {
1765 printk(KERN_NOTICE "megasas: %p unexpected"
1766 "cmds lst\n",
1767 reset_cmd);
1768 }
1769 reset_index++;
1770 }
1771
1772 return SUCCESS;
1773 }
1774
1775 for (i = 0; i < wait_time; i++) {
1776
1777 int outstanding = atomic_read(&instance->fw_outstanding);
1778
1779 if (!outstanding)
1780 break;
1781
1782 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1783 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1784 "commands to complete\n",i,outstanding);
1785 /*
1786 * Call cmd completion routine. Cmd to be
1787 * be completed directly without depending on isr.
1788 */
1789 megasas_complete_cmd_dpc((unsigned long)instance);
1790 }
1791
1792 msleep(1000);
1793 }
1794
1795 i = 0;
1796 kill_adapter_flag = 0;
1797 do {
1798 fw_state = instance->instancet->read_fw_status_reg(
1799 instance->reg_set) & MFI_STATE_MASK;
1800 if ((fw_state == MFI_STATE_FAULT) &&
1801 (instance->disableOnlineCtrlReset == 0)) {
1802 if (i == 3) {
1803 kill_adapter_flag = 2;
1804 break;
1805 }
1806 megasas_do_ocr(instance);
1807 kill_adapter_flag = 1;
1808
1809 /* wait for 1 secs to let FW finish the pending cmds */
1810 msleep(1000);
1811 }
1812 i++;
1813 } while (i <= 3);
1814
1815 if (atomic_read(&instance->fw_outstanding) &&
1816 !kill_adapter_flag) {
1817 if (instance->disableOnlineCtrlReset == 0) {
1818
1819 megasas_do_ocr(instance);
1820
1821 /* wait for 5 secs to let FW finish the pending cmds */
1822 for (i = 0; i < wait_time; i++) {
1823 int outstanding =
1824 atomic_read(&instance->fw_outstanding);
1825 if (!outstanding)
1826 return SUCCESS;
1827 msleep(1000);
1828 }
1829 }
1830 }
1831
1832 if (atomic_read(&instance->fw_outstanding) ||
1833 (kill_adapter_flag == 2)) {
1834 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1835 /*
1836 * Send signal to FW to stop processing any pending cmds.
1837 * The controller will be taken offline by the OS now.
1838 */
1839 if ((instance->pdev->device ==
1840 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1841 (instance->pdev->device ==
1842 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1843 writel(MFI_STOP_ADP,
1844 &instance->reg_set->doorbell);
1845 } else {
1846 writel(MFI_STOP_ADP,
1847 &instance->reg_set->inbound_doorbell);
1848 }
1849 megasas_dump_pending_frames(instance);
1850 spin_lock_irqsave(&instance->hba_lock, flags);
1851 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1852 spin_unlock_irqrestore(&instance->hba_lock, flags);
1853 return FAILED;
1854 }
1855
1856 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1857
1858 return SUCCESS;
1859 }
1860
1861 /**
1862 * megasas_generic_reset - Generic reset routine
1863 * @scmd: Mid-layer SCSI command
1864 *
1865 * This routine implements a generic reset handler for device, bus and host
1866 * reset requests. Device, bus and host specific reset handlers can use this
1867 * function after they do their specific tasks.
1868 */
1869 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1870 {
1871 int ret_val;
1872 struct megasas_instance *instance;
1873
1874 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1875
1876 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1877 scmd->cmnd[0], scmd->retries);
1878
1879 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1880 printk(KERN_ERR "megasas: cannot recover from previous reset "
1881 "failures\n");
1882 return FAILED;
1883 }
1884
1885 ret_val = megasas_wait_for_outstanding(instance);
1886 if (ret_val == SUCCESS)
1887 printk(KERN_NOTICE "megasas: reset successful \n");
1888 else
1889 printk(KERN_ERR "megasas: failed to do reset\n");
1890
1891 return ret_val;
1892 }
1893
1894 /**
1895 * megasas_reset_timer - quiesce the adapter if required
1896 * @scmd: scsi cmnd
1897 *
1898 * Sets the FW busy flag and reduces the host->can_queue if the
1899 * cmd has not been completed within the timeout period.
1900 */
1901 static enum
1902 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1903 {
1904 struct megasas_instance *instance;
1905 unsigned long flags;
1906
1907 if (time_after(jiffies, scmd->jiffies_at_alloc +
1908 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1909 return BLK_EH_NOT_HANDLED;
1910 }
1911
1912 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1913 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1914 /* FW is busy, throttle IO */
1915 spin_lock_irqsave(instance->host->host_lock, flags);
1916
1917 instance->host->can_queue = 16;
1918 instance->last_time = jiffies;
1919 instance->flag |= MEGASAS_FW_BUSY;
1920
1921 spin_unlock_irqrestore(instance->host->host_lock, flags);
1922 }
1923 return BLK_EH_RESET_TIMER;
1924 }
1925
1926 /**
1927 * megasas_reset_device - Device reset handler entry point
1928 */
1929 static int megasas_reset_device(struct scsi_cmnd *scmd)
1930 {
1931 int ret;
1932
1933 /*
1934 * First wait for all commands to complete
1935 */
1936 ret = megasas_generic_reset(scmd);
1937
1938 return ret;
1939 }
1940
1941 /**
1942 * megasas_reset_bus_host - Bus & host reset handler entry point
1943 */
1944 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1945 {
1946 int ret;
1947 struct megasas_instance *instance;
1948 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1949
1950 /*
1951 * First wait for all commands to complete
1952 */
1953 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1954 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
1955 ret = megasas_reset_fusion(scmd->device->host);
1956 else
1957 ret = megasas_generic_reset(scmd);
1958
1959 return ret;
1960 }
1961
1962 /**
1963 * megasas_bios_param - Returns disk geometry for a disk
1964 * @sdev: device handle
1965 * @bdev: block device
1966 * @capacity: drive capacity
1967 * @geom: geometry parameters
1968 */
1969 static int
1970 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1971 sector_t capacity, int geom[])
1972 {
1973 int heads;
1974 int sectors;
1975 sector_t cylinders;
1976 unsigned long tmp;
1977 /* Default heads (64) & sectors (32) */
1978 heads = 64;
1979 sectors = 32;
1980
1981 tmp = heads * sectors;
1982 cylinders = capacity;
1983
1984 sector_div(cylinders, tmp);
1985
1986 /*
1987 * Handle extended translation size for logical drives > 1Gb
1988 */
1989
1990 if (capacity >= 0x200000) {
1991 heads = 255;
1992 sectors = 63;
1993 tmp = heads*sectors;
1994 cylinders = capacity;
1995 sector_div(cylinders, tmp);
1996 }
1997
1998 geom[0] = heads;
1999 geom[1] = sectors;
2000 geom[2] = cylinders;
2001
2002 return 0;
2003 }
2004
2005 static void megasas_aen_polling(struct work_struct *work);
2006
2007 /**
2008 * megasas_service_aen - Processes an event notification
2009 * @instance: Adapter soft state
2010 * @cmd: AEN command completed by the ISR
2011 *
2012 * For AEN, driver sends a command down to FW that is held by the FW till an
2013 * event occurs. When an event of interest occurs, FW completes the command
2014 * that it was previously holding.
2015 *
2016 * This routines sends SIGIO signal to processes that have registered with the
2017 * driver for AEN.
2018 */
2019 static void
2020 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2021 {
2022 unsigned long flags;
2023 /*
2024 * Don't signal app if it is just an aborted previously registered aen
2025 */
2026 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2027 spin_lock_irqsave(&poll_aen_lock, flags);
2028 megasas_poll_wait_aen = 1;
2029 spin_unlock_irqrestore(&poll_aen_lock, flags);
2030 wake_up(&megasas_poll_wait);
2031 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2032 }
2033 else
2034 cmd->abort_aen = 0;
2035
2036 instance->aen_cmd = NULL;
2037 megasas_return_cmd(instance, cmd);
2038
2039 if ((instance->unload == 0) &&
2040 ((instance->issuepend_done == 1))) {
2041 struct megasas_aen_event *ev;
2042 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2043 if (!ev) {
2044 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2045 } else {
2046 ev->instance = instance;
2047 instance->ev = ev;
2048 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
2049 schedule_delayed_work(
2050 (struct delayed_work *)&ev->hotplug_work, 0);
2051 }
2052 }
2053 }
2054
2055 static int megasas_change_queue_depth(struct scsi_device *sdev,
2056 int queue_depth, int reason)
2057 {
2058 if (reason != SCSI_QDEPTH_DEFAULT)
2059 return -EOPNOTSUPP;
2060
2061 if (queue_depth > sdev->host->can_queue)
2062 queue_depth = sdev->host->can_queue;
2063 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2064 queue_depth);
2065
2066 return queue_depth;
2067 }
2068
2069 /*
2070 * Scsi host template for megaraid_sas driver
2071 */
2072 static struct scsi_host_template megasas_template = {
2073
2074 .module = THIS_MODULE,
2075 .name = "LSI SAS based MegaRAID driver",
2076 .proc_name = "megaraid_sas",
2077 .slave_configure = megasas_slave_configure,
2078 .slave_alloc = megasas_slave_alloc,
2079 .queuecommand = megasas_queue_command,
2080 .eh_device_reset_handler = megasas_reset_device,
2081 .eh_bus_reset_handler = megasas_reset_bus_host,
2082 .eh_host_reset_handler = megasas_reset_bus_host,
2083 .eh_timed_out = megasas_reset_timer,
2084 .bios_param = megasas_bios_param,
2085 .use_clustering = ENABLE_CLUSTERING,
2086 .change_queue_depth = megasas_change_queue_depth,
2087 };
2088
2089 /**
2090 * megasas_complete_int_cmd - Completes an internal command
2091 * @instance: Adapter soft state
2092 * @cmd: Command to be completed
2093 *
2094 * The megasas_issue_blocked_cmd() function waits for a command to complete
2095 * after it issues a command. This function wakes up that waiting routine by
2096 * calling wake_up() on the wait queue.
2097 */
2098 static void
2099 megasas_complete_int_cmd(struct megasas_instance *instance,
2100 struct megasas_cmd *cmd)
2101 {
2102 cmd->cmd_status = cmd->frame->io.cmd_status;
2103
2104 if (cmd->cmd_status == ENODATA) {
2105 cmd->cmd_status = 0;
2106 }
2107 wake_up(&instance->int_cmd_wait_q);
2108 }
2109
2110 /**
2111 * megasas_complete_abort - Completes aborting a command
2112 * @instance: Adapter soft state
2113 * @cmd: Cmd that was issued to abort another cmd
2114 *
2115 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2116 * after it issues an abort on a previously issued command. This function
2117 * wakes up all functions waiting on the same wait queue.
2118 */
2119 static void
2120 megasas_complete_abort(struct megasas_instance *instance,
2121 struct megasas_cmd *cmd)
2122 {
2123 if (cmd->sync_cmd) {
2124 cmd->sync_cmd = 0;
2125 cmd->cmd_status = 0;
2126 wake_up(&instance->abort_cmd_wait_q);
2127 }
2128
2129 return;
2130 }
2131
2132 /**
2133 * megasas_complete_cmd - Completes a command
2134 * @instance: Adapter soft state
2135 * @cmd: Command to be completed
2136 * @alt_status: If non-zero, use this value as status to
2137 * SCSI mid-layer instead of the value returned
2138 * by the FW. This should be used if caller wants
2139 * an alternate status (as in the case of aborted
2140 * commands)
2141 */
2142 void
2143 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2144 u8 alt_status)
2145 {
2146 int exception = 0;
2147 struct megasas_header *hdr = &cmd->frame->hdr;
2148 unsigned long flags;
2149 struct fusion_context *fusion = instance->ctrl_context;
2150
2151 /* flag for the retry reset */
2152 cmd->retry_for_fw_reset = 0;
2153
2154 if (cmd->scmd)
2155 cmd->scmd->SCp.ptr = NULL;
2156
2157 switch (hdr->cmd) {
2158 case MFI_CMD_INVALID:
2159 /* Some older 1068 controller FW may keep a pended
2160 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2161 when booting the kdump kernel. Ignore this command to
2162 prevent a kernel panic on shutdown of the kdump kernel. */
2163 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2164 "completed.\n");
2165 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2166 "other than PERC5, please upgrade your firmware.\n");
2167 break;
2168 case MFI_CMD_PD_SCSI_IO:
2169 case MFI_CMD_LD_SCSI_IO:
2170
2171 /*
2172 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2173 * issued either through an IO path or an IOCTL path. If it
2174 * was via IOCTL, we will send it to internal completion.
2175 */
2176 if (cmd->sync_cmd) {
2177 cmd->sync_cmd = 0;
2178 megasas_complete_int_cmd(instance, cmd);
2179 break;
2180 }
2181
2182 case MFI_CMD_LD_READ:
2183 case MFI_CMD_LD_WRITE:
2184
2185 if (alt_status) {
2186 cmd->scmd->result = alt_status << 16;
2187 exception = 1;
2188 }
2189
2190 if (exception) {
2191
2192 atomic_dec(&instance->fw_outstanding);
2193
2194 scsi_dma_unmap(cmd->scmd);
2195 cmd->scmd->scsi_done(cmd->scmd);
2196 megasas_return_cmd(instance, cmd);
2197
2198 break;
2199 }
2200
2201 switch (hdr->cmd_status) {
2202
2203 case MFI_STAT_OK:
2204 cmd->scmd->result = DID_OK << 16;
2205 break;
2206
2207 case MFI_STAT_SCSI_IO_FAILED:
2208 case MFI_STAT_LD_INIT_IN_PROGRESS:
2209 cmd->scmd->result =
2210 (DID_ERROR << 16) | hdr->scsi_status;
2211 break;
2212
2213 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2214
2215 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2216
2217 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2218 memset(cmd->scmd->sense_buffer, 0,
2219 SCSI_SENSE_BUFFERSIZE);
2220 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2221 hdr->sense_len);
2222
2223 cmd->scmd->result |= DRIVER_SENSE << 24;
2224 }
2225
2226 break;
2227
2228 case MFI_STAT_LD_OFFLINE:
2229 case MFI_STAT_DEVICE_NOT_FOUND:
2230 cmd->scmd->result = DID_BAD_TARGET << 16;
2231 break;
2232
2233 default:
2234 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2235 hdr->cmd_status);
2236 cmd->scmd->result = DID_ERROR << 16;
2237 break;
2238 }
2239
2240 atomic_dec(&instance->fw_outstanding);
2241
2242 scsi_dma_unmap(cmd->scmd);
2243 cmd->scmd->scsi_done(cmd->scmd);
2244 megasas_return_cmd(instance, cmd);
2245
2246 break;
2247
2248 case MFI_CMD_SMP:
2249 case MFI_CMD_STP:
2250 case MFI_CMD_DCMD:
2251 /* Check for LD map update */
2252 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2253 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2254 spin_lock_irqsave(instance->host->host_lock, flags);
2255 if (cmd->frame->hdr.cmd_status != 0) {
2256 if (cmd->frame->hdr.cmd_status !=
2257 MFI_STAT_NOT_FOUND)
2258 printk(KERN_WARNING "megasas: map sync"
2259 "failed, status = 0x%x.\n",
2260 cmd->frame->hdr.cmd_status);
2261 else {
2262 megasas_return_cmd(instance, cmd);
2263 spin_unlock_irqrestore(
2264 instance->host->host_lock,
2265 flags);
2266 break;
2267 }
2268 } else
2269 instance->map_id++;
2270 megasas_return_cmd(instance, cmd);
2271 if (MR_ValidateMapInfo(
2272 fusion->ld_map[(instance->map_id & 1)],
2273 fusion->load_balance_info))
2274 fusion->fast_path_io = 1;
2275 else
2276 fusion->fast_path_io = 0;
2277 megasas_sync_map_info(instance);
2278 spin_unlock_irqrestore(instance->host->host_lock,
2279 flags);
2280 break;
2281 }
2282 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2283 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2284 spin_lock_irqsave(&poll_aen_lock, flags);
2285 megasas_poll_wait_aen = 0;
2286 spin_unlock_irqrestore(&poll_aen_lock, flags);
2287 }
2288
2289 /*
2290 * See if got an event notification
2291 */
2292 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2293 megasas_service_aen(instance, cmd);
2294 else
2295 megasas_complete_int_cmd(instance, cmd);
2296
2297 break;
2298
2299 case MFI_CMD_ABORT:
2300 /*
2301 * Cmd issued to abort another cmd returned
2302 */
2303 megasas_complete_abort(instance, cmd);
2304 break;
2305
2306 default:
2307 printk("megasas: Unknown command completed! [0x%X]\n",
2308 hdr->cmd);
2309 break;
2310 }
2311 }
2312
2313 /**
2314 * megasas_issue_pending_cmds_again - issue all pending cmds
2315 * in FW again because of the fw reset
2316 * @instance: Adapter soft state
2317 */
2318 static inline void
2319 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2320 {
2321 struct megasas_cmd *cmd;
2322 struct list_head clist_local;
2323 union megasas_evt_class_locale class_locale;
2324 unsigned long flags;
2325 u32 seq_num;
2326
2327 INIT_LIST_HEAD(&clist_local);
2328 spin_lock_irqsave(&instance->hba_lock, flags);
2329 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2330 spin_unlock_irqrestore(&instance->hba_lock, flags);
2331
2332 while (!list_empty(&clist_local)) {
2333 cmd = list_entry((&clist_local)->next,
2334 struct megasas_cmd, list);
2335 list_del_init(&cmd->list);
2336
2337 if (cmd->sync_cmd || cmd->scmd) {
2338 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2339 "detected to be pending while HBA reset.\n",
2340 cmd, cmd->scmd, cmd->sync_cmd);
2341
2342 cmd->retry_for_fw_reset++;
2343
2344 if (cmd->retry_for_fw_reset == 3) {
2345 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2346 "was tried multiple times during reset."
2347 "Shutting down the HBA\n",
2348 cmd, cmd->scmd, cmd->sync_cmd);
2349 megaraid_sas_kill_hba(instance);
2350
2351 instance->adprecovery =
2352 MEGASAS_HW_CRITICAL_ERROR;
2353 return;
2354 }
2355 }
2356
2357 if (cmd->sync_cmd == 1) {
2358 if (cmd->scmd) {
2359 printk(KERN_NOTICE "megaraid_sas: unexpected"
2360 "cmd attached to internal command!\n");
2361 }
2362 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2363 "on the internal reset queue,"
2364 "issue it again.\n", cmd);
2365 cmd->cmd_status = ENODATA;
2366 instance->instancet->fire_cmd(instance,
2367 cmd->frame_phys_addr ,
2368 0, instance->reg_set);
2369 } else if (cmd->scmd) {
2370 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2371 "detected on the internal queue, issue again.\n",
2372 cmd, cmd->scmd->cmnd[0]);
2373
2374 atomic_inc(&instance->fw_outstanding);
2375 instance->instancet->fire_cmd(instance,
2376 cmd->frame_phys_addr,
2377 cmd->frame_count-1, instance->reg_set);
2378 } else {
2379 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2380 "internal reset defer list while re-issue!!\n",
2381 cmd);
2382 }
2383 }
2384
2385 if (instance->aen_cmd) {
2386 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2387 megasas_return_cmd(instance, instance->aen_cmd);
2388
2389 instance->aen_cmd = NULL;
2390 }
2391
2392 /*
2393 * Initiate AEN (Asynchronous Event Notification)
2394 */
2395 seq_num = instance->last_seq_num;
2396 class_locale.members.reserved = 0;
2397 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2398 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2399
2400 megasas_register_aen(instance, seq_num, class_locale.word);
2401 }
2402
2403 /**
2404 * Move the internal reset pending commands to a deferred queue.
2405 *
2406 * We move the commands pending at internal reset time to a
2407 * pending queue. This queue would be flushed after successful
2408 * completion of the internal reset sequence. if the internal reset
2409 * did not complete in time, the kernel reset handler would flush
2410 * these commands.
2411 **/
2412 static void
2413 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2414 {
2415 struct megasas_cmd *cmd;
2416 int i;
2417 u32 max_cmd = instance->max_fw_cmds;
2418 u32 defer_index;
2419 unsigned long flags;
2420
2421 defer_index = 0;
2422 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2423 for (i = 0; i < max_cmd; i++) {
2424 cmd = instance->cmd_list[i];
2425 if (cmd->sync_cmd == 1 || cmd->scmd) {
2426 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2427 "on the defer queue as internal\n",
2428 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2429
2430 if (!list_empty(&cmd->list)) {
2431 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2432 " moving this cmd:%p, %d %p, it was"
2433 "discovered on some list?\n",
2434 cmd, cmd->sync_cmd, cmd->scmd);
2435
2436 list_del_init(&cmd->list);
2437 }
2438 defer_index++;
2439 list_add_tail(&cmd->list,
2440 &instance->internal_reset_pending_q);
2441 }
2442 }
2443 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2444 }
2445
2446
2447 static void
2448 process_fw_state_change_wq(struct work_struct *work)
2449 {
2450 struct megasas_instance *instance =
2451 container_of(work, struct megasas_instance, work_init);
2452 u32 wait;
2453 unsigned long flags;
2454
2455 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2456 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2457 instance->adprecovery);
2458 return ;
2459 }
2460
2461 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2462 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2463 "state, restarting it...\n");
2464
2465 instance->instancet->disable_intr(instance->reg_set);
2466 atomic_set(&instance->fw_outstanding, 0);
2467
2468 atomic_set(&instance->fw_reset_no_pci_access, 1);
2469 instance->instancet->adp_reset(instance, instance->reg_set);
2470 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2471
2472 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2473 "initiating next stage...\n");
2474
2475 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2476 "state 2 starting...\n");
2477
2478 /*waitting for about 20 second before start the second init*/
2479 for (wait = 0; wait < 30; wait++) {
2480 msleep(1000);
2481 }
2482
2483 if (megasas_transition_to_ready(instance, 1)) {
2484 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2485
2486 megaraid_sas_kill_hba(instance);
2487 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2488 return ;
2489 }
2490
2491 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2492 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2493 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2494 ) {
2495 *instance->consumer = *instance->producer;
2496 } else {
2497 *instance->consumer = 0;
2498 *instance->producer = 0;
2499 }
2500
2501 megasas_issue_init_mfi(instance);
2502
2503 spin_lock_irqsave(&instance->hba_lock, flags);
2504 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2505 spin_unlock_irqrestore(&instance->hba_lock, flags);
2506 instance->instancet->enable_intr(instance->reg_set);
2507
2508 megasas_issue_pending_cmds_again(instance);
2509 instance->issuepend_done = 1;
2510 }
2511 return ;
2512 }
2513
2514 /**
2515 * megasas_deplete_reply_queue - Processes all completed commands
2516 * @instance: Adapter soft state
2517 * @alt_status: Alternate status to be returned to
2518 * SCSI mid-layer instead of the status
2519 * returned by the FW
2520 * Note: this must be called with hba lock held
2521 */
2522 static int
2523 megasas_deplete_reply_queue(struct megasas_instance *instance,
2524 u8 alt_status)
2525 {
2526 u32 mfiStatus;
2527 u32 fw_state;
2528
2529 if ((mfiStatus = instance->instancet->check_reset(instance,
2530 instance->reg_set)) == 1) {
2531 return IRQ_HANDLED;
2532 }
2533
2534 if ((mfiStatus = instance->instancet->clear_intr(
2535 instance->reg_set)
2536 ) == 0) {
2537 /* Hardware may not set outbound_intr_status in MSI-X mode */
2538 if (!instance->msix_vectors)
2539 return IRQ_NONE;
2540 }
2541
2542 instance->mfiStatus = mfiStatus;
2543
2544 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2545 fw_state = instance->instancet->read_fw_status_reg(
2546 instance->reg_set) & MFI_STATE_MASK;
2547
2548 if (fw_state != MFI_STATE_FAULT) {
2549 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2550 fw_state);
2551 }
2552
2553 if ((fw_state == MFI_STATE_FAULT) &&
2554 (instance->disableOnlineCtrlReset == 0)) {
2555 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2556
2557 if ((instance->pdev->device ==
2558 PCI_DEVICE_ID_LSI_SAS1064R) ||
2559 (instance->pdev->device ==
2560 PCI_DEVICE_ID_DELL_PERC5) ||
2561 (instance->pdev->device ==
2562 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2563
2564 *instance->consumer =
2565 MEGASAS_ADPRESET_INPROG_SIGN;
2566 }
2567
2568
2569 instance->instancet->disable_intr(instance->reg_set);
2570 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2571 instance->issuepend_done = 0;
2572
2573 atomic_set(&instance->fw_outstanding, 0);
2574 megasas_internal_reset_defer_cmds(instance);
2575
2576 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2577 fw_state, instance->adprecovery);
2578
2579 schedule_work(&instance->work_init);
2580 return IRQ_HANDLED;
2581
2582 } else {
2583 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2584 fw_state, instance->disableOnlineCtrlReset);
2585 }
2586 }
2587
2588 tasklet_schedule(&instance->isr_tasklet);
2589 return IRQ_HANDLED;
2590 }
2591 /**
2592 * megasas_isr - isr entry point
2593 */
2594 static irqreturn_t megasas_isr(int irq, void *devp)
2595 {
2596 struct megasas_irq_context *irq_context = devp;
2597 struct megasas_instance *instance = irq_context->instance;
2598 unsigned long flags;
2599 irqreturn_t rc;
2600
2601 if (atomic_read(&instance->fw_reset_no_pci_access))
2602 return IRQ_HANDLED;
2603
2604 spin_lock_irqsave(&instance->hba_lock, flags);
2605 rc = megasas_deplete_reply_queue(instance, DID_OK);
2606 spin_unlock_irqrestore(&instance->hba_lock, flags);
2607
2608 return rc;
2609 }
2610
2611 /**
2612 * megasas_transition_to_ready - Move the FW to READY state
2613 * @instance: Adapter soft state
2614 *
2615 * During the initialization, FW passes can potentially be in any one of
2616 * several possible states. If the FW in operational, waiting-for-handshake
2617 * states, driver must take steps to bring it to ready state. Otherwise, it
2618 * has to wait for the ready state.
2619 */
2620 int
2621 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2622 {
2623 int i;
2624 u8 max_wait;
2625 u32 fw_state;
2626 u32 cur_state;
2627 u32 abs_state, curr_abs_state;
2628
2629 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2630
2631 if (fw_state != MFI_STATE_READY)
2632 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2633 " state\n");
2634
2635 while (fw_state != MFI_STATE_READY) {
2636
2637 abs_state =
2638 instance->instancet->read_fw_status_reg(instance->reg_set);
2639
2640 switch (fw_state) {
2641
2642 case MFI_STATE_FAULT:
2643 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2644 if (ocr) {
2645 max_wait = MEGASAS_RESET_WAIT_TIME;
2646 cur_state = MFI_STATE_FAULT;
2647 break;
2648 } else
2649 return -ENODEV;
2650
2651 case MFI_STATE_WAIT_HANDSHAKE:
2652 /*
2653 * Set the CLR bit in inbound doorbell
2654 */
2655 if ((instance->pdev->device ==
2656 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2657 (instance->pdev->device ==
2658 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2659 (instance->pdev->device ==
2660 PCI_DEVICE_ID_LSI_FUSION) ||
2661 (instance->pdev->device ==
2662 PCI_DEVICE_ID_LSI_INVADER)) {
2663 writel(
2664 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2665 &instance->reg_set->doorbell);
2666 } else {
2667 writel(
2668 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2669 &instance->reg_set->inbound_doorbell);
2670 }
2671
2672 max_wait = MEGASAS_RESET_WAIT_TIME;
2673 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2674 break;
2675
2676 case MFI_STATE_BOOT_MESSAGE_PENDING:
2677 if ((instance->pdev->device ==
2678 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2679 (instance->pdev->device ==
2680 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2681 (instance->pdev->device ==
2682 PCI_DEVICE_ID_LSI_FUSION) ||
2683 (instance->pdev->device ==
2684 PCI_DEVICE_ID_LSI_INVADER)) {
2685 writel(MFI_INIT_HOTPLUG,
2686 &instance->reg_set->doorbell);
2687 } else
2688 writel(MFI_INIT_HOTPLUG,
2689 &instance->reg_set->inbound_doorbell);
2690
2691 max_wait = MEGASAS_RESET_WAIT_TIME;
2692 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2693 break;
2694
2695 case MFI_STATE_OPERATIONAL:
2696 /*
2697 * Bring it to READY state; assuming max wait 10 secs
2698 */
2699 instance->instancet->disable_intr(instance->reg_set);
2700 if ((instance->pdev->device ==
2701 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2702 (instance->pdev->device ==
2703 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2704 (instance->pdev->device
2705 == PCI_DEVICE_ID_LSI_FUSION) ||
2706 (instance->pdev->device
2707 == PCI_DEVICE_ID_LSI_INVADER)) {
2708 writel(MFI_RESET_FLAGS,
2709 &instance->reg_set->doorbell);
2710 if ((instance->pdev->device ==
2711 PCI_DEVICE_ID_LSI_FUSION) ||
2712 (instance->pdev->device ==
2713 PCI_DEVICE_ID_LSI_INVADER)) {
2714 for (i = 0; i < (10 * 1000); i += 20) {
2715 if (readl(
2716 &instance->
2717 reg_set->
2718 doorbell) & 1)
2719 msleep(20);
2720 else
2721 break;
2722 }
2723 }
2724 } else
2725 writel(MFI_RESET_FLAGS,
2726 &instance->reg_set->inbound_doorbell);
2727
2728 max_wait = MEGASAS_RESET_WAIT_TIME;
2729 cur_state = MFI_STATE_OPERATIONAL;
2730 break;
2731
2732 case MFI_STATE_UNDEFINED:
2733 /*
2734 * This state should not last for more than 2 seconds
2735 */
2736 max_wait = MEGASAS_RESET_WAIT_TIME;
2737 cur_state = MFI_STATE_UNDEFINED;
2738 break;
2739
2740 case MFI_STATE_BB_INIT:
2741 max_wait = MEGASAS_RESET_WAIT_TIME;
2742 cur_state = MFI_STATE_BB_INIT;
2743 break;
2744
2745 case MFI_STATE_FW_INIT:
2746 max_wait = MEGASAS_RESET_WAIT_TIME;
2747 cur_state = MFI_STATE_FW_INIT;
2748 break;
2749
2750 case MFI_STATE_FW_INIT_2:
2751 max_wait = MEGASAS_RESET_WAIT_TIME;
2752 cur_state = MFI_STATE_FW_INIT_2;
2753 break;
2754
2755 case MFI_STATE_DEVICE_SCAN:
2756 max_wait = MEGASAS_RESET_WAIT_TIME;
2757 cur_state = MFI_STATE_DEVICE_SCAN;
2758 break;
2759
2760 case MFI_STATE_FLUSH_CACHE:
2761 max_wait = MEGASAS_RESET_WAIT_TIME;
2762 cur_state = MFI_STATE_FLUSH_CACHE;
2763 break;
2764
2765 default:
2766 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2767 fw_state);
2768 return -ENODEV;
2769 }
2770
2771 /*
2772 * The cur_state should not last for more than max_wait secs
2773 */
2774 for (i = 0; i < (max_wait * 1000); i++) {
2775 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2776 MFI_STATE_MASK ;
2777 curr_abs_state =
2778 instance->instancet->read_fw_status_reg(instance->reg_set);
2779
2780 if (abs_state == curr_abs_state) {
2781 msleep(1);
2782 } else
2783 break;
2784 }
2785
2786 /*
2787 * Return error if fw_state hasn't changed after max_wait
2788 */
2789 if (curr_abs_state == abs_state) {
2790 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2791 "in %d secs\n", fw_state, max_wait);
2792 return -ENODEV;
2793 }
2794 }
2795 printk(KERN_INFO "megasas: FW now in Ready state\n");
2796
2797 return 0;
2798 }
2799
2800 /**
2801 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2802 * @instance: Adapter soft state
2803 */
2804 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2805 {
2806 int i;
2807 u32 max_cmd = instance->max_mfi_cmds;
2808 struct megasas_cmd *cmd;
2809
2810 if (!instance->frame_dma_pool)
2811 return;
2812
2813 /*
2814 * Return all frames to pool
2815 */
2816 for (i = 0; i < max_cmd; i++) {
2817
2818 cmd = instance->cmd_list[i];
2819
2820 if (cmd->frame)
2821 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2822 cmd->frame_phys_addr);
2823
2824 if (cmd->sense)
2825 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2826 cmd->sense_phys_addr);
2827 }
2828
2829 /*
2830 * Now destroy the pool itself
2831 */
2832 pci_pool_destroy(instance->frame_dma_pool);
2833 pci_pool_destroy(instance->sense_dma_pool);
2834
2835 instance->frame_dma_pool = NULL;
2836 instance->sense_dma_pool = NULL;
2837 }
2838
2839 /**
2840 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2841 * @instance: Adapter soft state
2842 *
2843 * Each command packet has an embedded DMA memory buffer that is used for
2844 * filling MFI frame and the SG list that immediately follows the frame. This
2845 * function creates those DMA memory buffers for each command packet by using
2846 * PCI pool facility.
2847 */
2848 static int megasas_create_frame_pool(struct megasas_instance *instance)
2849 {
2850 int i;
2851 u32 max_cmd;
2852 u32 sge_sz;
2853 u32 sgl_sz;
2854 u32 total_sz;
2855 u32 frame_count;
2856 struct megasas_cmd *cmd;
2857
2858 max_cmd = instance->max_mfi_cmds;
2859
2860 /*
2861 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2862 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2863 */
2864 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2865 sizeof(struct megasas_sge32);
2866
2867 if (instance->flag_ieee) {
2868 sge_sz = sizeof(struct megasas_sge_skinny);
2869 }
2870
2871 /*
2872 * Calculated the number of 64byte frames required for SGL
2873 */
2874 sgl_sz = sge_sz * instance->max_num_sge;
2875 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2876 frame_count = 15;
2877
2878 /*
2879 * We need one extra frame for the MFI command
2880 */
2881 frame_count++;
2882
2883 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2884 /*
2885 * Use DMA pool facility provided by PCI layer
2886 */
2887 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2888 instance->pdev, total_sz, 64,
2889 0);
2890
2891 if (!instance->frame_dma_pool) {
2892 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2893 return -ENOMEM;
2894 }
2895
2896 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2897 instance->pdev, 128, 4, 0);
2898
2899 if (!instance->sense_dma_pool) {
2900 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2901
2902 pci_pool_destroy(instance->frame_dma_pool);
2903 instance->frame_dma_pool = NULL;
2904
2905 return -ENOMEM;
2906 }
2907
2908 /*
2909 * Allocate and attach a frame to each of the commands in cmd_list.
2910 * By making cmd->index as the context instead of the &cmd, we can
2911 * always use 32bit context regardless of the architecture
2912 */
2913 for (i = 0; i < max_cmd; i++) {
2914
2915 cmd = instance->cmd_list[i];
2916
2917 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2918 GFP_KERNEL, &cmd->frame_phys_addr);
2919
2920 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2921 GFP_KERNEL, &cmd->sense_phys_addr);
2922
2923 /*
2924 * megasas_teardown_frame_pool() takes care of freeing
2925 * whatever has been allocated
2926 */
2927 if (!cmd->frame || !cmd->sense) {
2928 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2929 megasas_teardown_frame_pool(instance);
2930 return -ENOMEM;
2931 }
2932
2933 memset(cmd->frame, 0, total_sz);
2934 cmd->frame->io.context = cmd->index;
2935 cmd->frame->io.pad_0 = 0;
2936 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
2937 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
2938 (reset_devices))
2939 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
2940 }
2941
2942 return 0;
2943 }
2944
2945 /**
2946 * megasas_free_cmds - Free all the cmds in the free cmd pool
2947 * @instance: Adapter soft state
2948 */
2949 void megasas_free_cmds(struct megasas_instance *instance)
2950 {
2951 int i;
2952 /* First free the MFI frame pool */
2953 megasas_teardown_frame_pool(instance);
2954
2955 /* Free all the commands in the cmd_list */
2956 for (i = 0; i < instance->max_mfi_cmds; i++)
2957
2958 kfree(instance->cmd_list[i]);
2959
2960 /* Free the cmd_list buffer itself */
2961 kfree(instance->cmd_list);
2962 instance->cmd_list = NULL;
2963
2964 INIT_LIST_HEAD(&instance->cmd_pool);
2965 }
2966
2967 /**
2968 * megasas_alloc_cmds - Allocates the command packets
2969 * @instance: Adapter soft state
2970 *
2971 * Each command that is issued to the FW, whether IO commands from the OS or
2972 * internal commands like IOCTLs, are wrapped in local data structure called
2973 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2974 * the FW.
2975 *
2976 * Each frame has a 32-bit field called context (tag). This context is used
2977 * to get back the megasas_cmd from the frame when a frame gets completed in
2978 * the ISR. Typically the address of the megasas_cmd itself would be used as
2979 * the context. But we wanted to keep the differences between 32 and 64 bit
2980 * systems to the mininum. We always use 32 bit integers for the context. In
2981 * this driver, the 32 bit values are the indices into an array cmd_list.
2982 * This array is used only to look up the megasas_cmd given the context. The
2983 * free commands themselves are maintained in a linked list called cmd_pool.
2984 */
2985 int megasas_alloc_cmds(struct megasas_instance *instance)
2986 {
2987 int i;
2988 int j;
2989 u32 max_cmd;
2990 struct megasas_cmd *cmd;
2991
2992 max_cmd = instance->max_mfi_cmds;
2993
2994 /*
2995 * instance->cmd_list is an array of struct megasas_cmd pointers.
2996 * Allocate the dynamic array first and then allocate individual
2997 * commands.
2998 */
2999 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3000
3001 if (!instance->cmd_list) {
3002 printk(KERN_DEBUG "megasas: out of memory\n");
3003 return -ENOMEM;
3004 }
3005
3006 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3007
3008 for (i = 0; i < max_cmd; i++) {
3009 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3010 GFP_KERNEL);
3011
3012 if (!instance->cmd_list[i]) {
3013
3014 for (j = 0; j < i; j++)
3015 kfree(instance->cmd_list[j]);
3016
3017 kfree(instance->cmd_list);
3018 instance->cmd_list = NULL;
3019
3020 return -ENOMEM;
3021 }
3022 }
3023
3024 /*
3025 * Add all the commands to command pool (instance->cmd_pool)
3026 */
3027 for (i = 0; i < max_cmd; i++) {
3028 cmd = instance->cmd_list[i];
3029 memset(cmd, 0, sizeof(struct megasas_cmd));
3030 cmd->index = i;
3031 cmd->scmd = NULL;
3032 cmd->instance = instance;
3033
3034 list_add_tail(&cmd->list, &instance->cmd_pool);
3035 }
3036
3037 /*
3038 * Create a frame pool and assign one frame to each cmd
3039 */
3040 if (megasas_create_frame_pool(instance)) {
3041 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3042 megasas_free_cmds(instance);
3043 }
3044
3045 return 0;
3046 }
3047
3048 /*
3049 * megasas_get_pd_list_info - Returns FW's pd_list structure
3050 * @instance: Adapter soft state
3051 * @pd_list: pd_list structure
3052 *
3053 * Issues an internal command (DCMD) to get the FW's controller PD
3054 * list structure. This information is mainly used to find out SYSTEM
3055 * supported by the FW.
3056 */
3057 static int
3058 megasas_get_pd_list(struct megasas_instance *instance)
3059 {
3060 int ret = 0, pd_index = 0;
3061 struct megasas_cmd *cmd;
3062 struct megasas_dcmd_frame *dcmd;
3063 struct MR_PD_LIST *ci;
3064 struct MR_PD_ADDRESS *pd_addr;
3065 dma_addr_t ci_h = 0;
3066
3067 cmd = megasas_get_cmd(instance);
3068
3069 if (!cmd) {
3070 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3071 return -ENOMEM;
3072 }
3073
3074 dcmd = &cmd->frame->dcmd;
3075
3076 ci = pci_alloc_consistent(instance->pdev,
3077 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3078
3079 if (!ci) {
3080 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3081 megasas_return_cmd(instance, cmd);
3082 return -ENOMEM;
3083 }
3084
3085 memset(ci, 0, sizeof(*ci));
3086 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3087
3088 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3089 dcmd->mbox.b[1] = 0;
3090 dcmd->cmd = MFI_CMD_DCMD;
3091 dcmd->cmd_status = 0xFF;
3092 dcmd->sge_count = 1;
3093 dcmd->flags = MFI_FRAME_DIR_READ;
3094 dcmd->timeout = 0;
3095 dcmd->pad_0 = 0;
3096 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3097 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3098 dcmd->sgl.sge32[0].phys_addr = ci_h;
3099 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3100
3101 if (!megasas_issue_polled(instance, cmd)) {
3102 ret = 0;
3103 } else {
3104 ret = -1;
3105 }
3106
3107 /*
3108 * the following function will get the instance PD LIST.
3109 */
3110
3111 pd_addr = ci->addr;
3112
3113 if ( ret == 0 &&
3114 (ci->count <
3115 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3116
3117 memset(instance->pd_list, 0,
3118 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3119
3120 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3121
3122 instance->pd_list[pd_addr->deviceId].tid =
3123 pd_addr->deviceId;
3124 instance->pd_list[pd_addr->deviceId].driveType =
3125 pd_addr->scsiDevType;
3126 instance->pd_list[pd_addr->deviceId].driveState =
3127 MR_PD_STATE_SYSTEM;
3128 pd_addr++;
3129 }
3130 }
3131
3132 pci_free_consistent(instance->pdev,
3133 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3134 ci, ci_h);
3135 megasas_return_cmd(instance, cmd);
3136
3137 return ret;
3138 }
3139
3140 /*
3141 * megasas_get_ld_list_info - Returns FW's ld_list structure
3142 * @instance: Adapter soft state
3143 * @ld_list: ld_list structure
3144 *
3145 * Issues an internal command (DCMD) to get the FW's controller PD
3146 * list structure. This information is mainly used to find out SYSTEM
3147 * supported by the FW.
3148 */
3149 static int
3150 megasas_get_ld_list(struct megasas_instance *instance)
3151 {
3152 int ret = 0, ld_index = 0, ids = 0;
3153 struct megasas_cmd *cmd;
3154 struct megasas_dcmd_frame *dcmd;
3155 struct MR_LD_LIST *ci;
3156 dma_addr_t ci_h = 0;
3157
3158 cmd = megasas_get_cmd(instance);
3159
3160 if (!cmd) {
3161 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3162 return -ENOMEM;
3163 }
3164
3165 dcmd = &cmd->frame->dcmd;
3166
3167 ci = pci_alloc_consistent(instance->pdev,
3168 sizeof(struct MR_LD_LIST),
3169 &ci_h);
3170
3171 if (!ci) {
3172 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3173 megasas_return_cmd(instance, cmd);
3174 return -ENOMEM;
3175 }
3176
3177 memset(ci, 0, sizeof(*ci));
3178 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3179
3180 dcmd->cmd = MFI_CMD_DCMD;
3181 dcmd->cmd_status = 0xFF;
3182 dcmd->sge_count = 1;
3183 dcmd->flags = MFI_FRAME_DIR_READ;
3184 dcmd->timeout = 0;
3185 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3186 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3187 dcmd->sgl.sge32[0].phys_addr = ci_h;
3188 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3189 dcmd->pad_0 = 0;
3190
3191 if (!megasas_issue_polled(instance, cmd)) {
3192 ret = 0;
3193 } else {
3194 ret = -1;
3195 }
3196
3197 /* the following function will get the instance PD LIST */
3198
3199 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
3200 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3201
3202 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3203 if (ci->ldList[ld_index].state != 0) {
3204 ids = ci->ldList[ld_index].ref.targetId;
3205 instance->ld_ids[ids] =
3206 ci->ldList[ld_index].ref.targetId;
3207 }
3208 }
3209 }
3210
3211 pci_free_consistent(instance->pdev,
3212 sizeof(struct MR_LD_LIST),
3213 ci,
3214 ci_h);
3215
3216 megasas_return_cmd(instance, cmd);
3217 return ret;
3218 }
3219
3220 /**
3221 * megasas_get_controller_info - Returns FW's controller structure
3222 * @instance: Adapter soft state
3223 * @ctrl_info: Controller information structure
3224 *
3225 * Issues an internal command (DCMD) to get the FW's controller structure.
3226 * This information is mainly used to find out the maximum IO transfer per
3227 * command supported by the FW.
3228 */
3229 static int
3230 megasas_get_ctrl_info(struct megasas_instance *instance,
3231 struct megasas_ctrl_info *ctrl_info)
3232 {
3233 int ret = 0;
3234 struct megasas_cmd *cmd;
3235 struct megasas_dcmd_frame *dcmd;
3236 struct megasas_ctrl_info *ci;
3237 dma_addr_t ci_h = 0;
3238
3239 cmd = megasas_get_cmd(instance);
3240
3241 if (!cmd) {
3242 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3243 return -ENOMEM;
3244 }
3245
3246 dcmd = &cmd->frame->dcmd;
3247
3248 ci = pci_alloc_consistent(instance->pdev,
3249 sizeof(struct megasas_ctrl_info), &ci_h);
3250
3251 if (!ci) {
3252 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3253 megasas_return_cmd(instance, cmd);
3254 return -ENOMEM;
3255 }
3256
3257 memset(ci, 0, sizeof(*ci));
3258 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3259
3260 dcmd->cmd = MFI_CMD_DCMD;
3261 dcmd->cmd_status = 0xFF;
3262 dcmd->sge_count = 1;
3263 dcmd->flags = MFI_FRAME_DIR_READ;
3264 dcmd->timeout = 0;
3265 dcmd->pad_0 = 0;
3266 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3267 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3268 dcmd->sgl.sge32[0].phys_addr = ci_h;
3269 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3270
3271 if (!megasas_issue_polled(instance, cmd)) {
3272 ret = 0;
3273 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3274 } else {
3275 ret = -1;
3276 }
3277
3278 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3279 ci, ci_h);
3280
3281 megasas_return_cmd(instance, cmd);
3282 return ret;
3283 }
3284
3285 /**
3286 * megasas_issue_init_mfi - Initializes the FW
3287 * @instance: Adapter soft state
3288 *
3289 * Issues the INIT MFI cmd
3290 */
3291 static int
3292 megasas_issue_init_mfi(struct megasas_instance *instance)
3293 {
3294 u32 context;
3295
3296 struct megasas_cmd *cmd;
3297
3298 struct megasas_init_frame *init_frame;
3299 struct megasas_init_queue_info *initq_info;
3300 dma_addr_t init_frame_h;
3301 dma_addr_t initq_info_h;
3302
3303 /*
3304 * Prepare a init frame. Note the init frame points to queue info
3305 * structure. Each frame has SGL allocated after first 64 bytes. For
3306 * this frame - since we don't need any SGL - we use SGL's space as
3307 * queue info structure
3308 *
3309 * We will not get a NULL command below. We just created the pool.
3310 */
3311 cmd = megasas_get_cmd(instance);
3312
3313 init_frame = (struct megasas_init_frame *)cmd->frame;
3314 initq_info = (struct megasas_init_queue_info *)
3315 ((unsigned long)init_frame + 64);
3316
3317 init_frame_h = cmd->frame_phys_addr;
3318 initq_info_h = init_frame_h + 64;
3319
3320 context = init_frame->context;
3321 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3322 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3323 init_frame->context = context;
3324
3325 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3326 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3327
3328 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3329 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3330
3331 init_frame->cmd = MFI_CMD_INIT;
3332 init_frame->cmd_status = 0xFF;
3333 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3334
3335 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3336
3337 /*
3338 * disable the intr before firing the init frame to FW
3339 */
3340 instance->instancet->disable_intr(instance->reg_set);
3341
3342 /*
3343 * Issue the init frame in polled mode
3344 */
3345
3346 if (megasas_issue_polled(instance, cmd)) {
3347 printk(KERN_ERR "megasas: Failed to init firmware\n");
3348 megasas_return_cmd(instance, cmd);
3349 goto fail_fw_init;
3350 }
3351
3352 megasas_return_cmd(instance, cmd);
3353
3354 return 0;
3355
3356 fail_fw_init:
3357 return -EINVAL;
3358 }
3359
3360 static u32
3361 megasas_init_adapter_mfi(struct megasas_instance *instance)
3362 {
3363 struct megasas_register_set __iomem *reg_set;
3364 u32 context_sz;
3365 u32 reply_q_sz;
3366
3367 reg_set = instance->reg_set;
3368
3369 /*
3370 * Get various operational parameters from status register
3371 */
3372 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3373 /*
3374 * Reduce the max supported cmds by 1. This is to ensure that the
3375 * reply_q_sz (1 more than the max cmd that driver may send)
3376 * does not exceed max cmds that the FW can support
3377 */
3378 instance->max_fw_cmds = instance->max_fw_cmds-1;
3379 instance->max_mfi_cmds = instance->max_fw_cmds;
3380 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3381 0x10;
3382 /*
3383 * Create a pool of commands
3384 */
3385 if (megasas_alloc_cmds(instance))
3386 goto fail_alloc_cmds;
3387
3388 /*
3389 * Allocate memory for reply queue. Length of reply queue should
3390 * be _one_ more than the maximum commands handled by the firmware.
3391 *
3392 * Note: When FW completes commands, it places corresponding contex
3393 * values in this circular reply queue. This circular queue is a fairly
3394 * typical producer-consumer queue. FW is the producer (of completed
3395 * commands) and the driver is the consumer.
3396 */
3397 context_sz = sizeof(u32);
3398 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3399
3400 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3401 reply_q_sz,
3402 &instance->reply_queue_h);
3403
3404 if (!instance->reply_queue) {
3405 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3406 goto fail_reply_queue;
3407 }
3408
3409 if (megasas_issue_init_mfi(instance))
3410 goto fail_fw_init;
3411
3412 instance->fw_support_ieee = 0;
3413 instance->fw_support_ieee =
3414 (instance->instancet->read_fw_status_reg(reg_set) &
3415 0x04000000);
3416
3417 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3418 instance->fw_support_ieee);
3419
3420 if (instance->fw_support_ieee)
3421 instance->flag_ieee = 1;
3422
3423 return 0;
3424
3425 fail_fw_init:
3426
3427 pci_free_consistent(instance->pdev, reply_q_sz,
3428 instance->reply_queue, instance->reply_queue_h);
3429 fail_reply_queue:
3430 megasas_free_cmds(instance);
3431
3432 fail_alloc_cmds:
3433 return 1;
3434 }
3435
3436 /**
3437 * megasas_init_fw - Initializes the FW
3438 * @instance: Adapter soft state
3439 *
3440 * This is the main function for initializing firmware
3441 */
3442
3443 static int megasas_init_fw(struct megasas_instance *instance)
3444 {
3445 u32 max_sectors_1;
3446 u32 max_sectors_2;
3447 u32 tmp_sectors, msix_enable;
3448 struct megasas_register_set __iomem *reg_set;
3449 struct megasas_ctrl_info *ctrl_info;
3450 unsigned long bar_list;
3451 int i;
3452
3453 /* Find first memory bar */
3454 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3455 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3456 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3457 if (pci_request_selected_regions(instance->pdev, instance->bar,
3458 "megasas: LSI")) {
3459 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3460 return -EBUSY;
3461 }
3462
3463 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3464
3465 if (!instance->reg_set) {
3466 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3467 goto fail_ioremap;
3468 }
3469
3470 reg_set = instance->reg_set;
3471
3472 switch (instance->pdev->device) {
3473 case PCI_DEVICE_ID_LSI_FUSION:
3474 case PCI_DEVICE_ID_LSI_INVADER:
3475 instance->instancet = &megasas_instance_template_fusion;
3476 break;
3477 case PCI_DEVICE_ID_LSI_SAS1078R:
3478 case PCI_DEVICE_ID_LSI_SAS1078DE:
3479 instance->instancet = &megasas_instance_template_ppc;
3480 break;
3481 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3482 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3483 instance->instancet = &megasas_instance_template_gen2;
3484 break;
3485 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3486 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3487 instance->instancet = &megasas_instance_template_skinny;
3488 break;
3489 case PCI_DEVICE_ID_LSI_SAS1064R:
3490 case PCI_DEVICE_ID_DELL_PERC5:
3491 default:
3492 instance->instancet = &megasas_instance_template_xscale;
3493 break;
3494 }
3495
3496 /*
3497 * We expect the FW state to be READY
3498 */
3499 if (megasas_transition_to_ready(instance, 0))
3500 goto fail_ready_state;
3501
3502 /* Check if MSI-X is supported while in ready state */
3503 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3504 0x4000000) >> 0x1a;
3505 if (msix_enable && !msix_disable) {
3506 /* Check max MSI-X vectors */
3507 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3508 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3509 instance->msix_vectors = (readl(&instance->reg_set->
3510 outbound_scratch_pad_2
3511 ) & 0x1F) + 1;
3512 } else
3513 instance->msix_vectors = 1;
3514 /* Don't bother allocating more MSI-X vectors than cpus */
3515 instance->msix_vectors = min(instance->msix_vectors,
3516 (unsigned int)num_online_cpus());
3517 for (i = 0; i < instance->msix_vectors; i++)
3518 instance->msixentry[i].entry = i;
3519 i = pci_enable_msix(instance->pdev, instance->msixentry,
3520 instance->msix_vectors);
3521 if (i >= 0) {
3522 if (i) {
3523 if (!pci_enable_msix(instance->pdev,
3524 instance->msixentry, i))
3525 instance->msix_vectors = i;
3526 else
3527 instance->msix_vectors = 0;
3528 }
3529 } else
3530 instance->msix_vectors = 0;
3531 }
3532
3533 /* Get operational params, sge flags, send init cmd to controller */
3534 if (instance->instancet->init_adapter(instance))
3535 goto fail_init_adapter;
3536
3537 printk(KERN_ERR "megasas: INIT adapter done\n");
3538
3539 /** for passthrough
3540 * the following function will get the PD LIST.
3541 */
3542
3543 memset(instance->pd_list, 0 ,
3544 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3545 megasas_get_pd_list(instance);
3546
3547 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3548 megasas_get_ld_list(instance);
3549
3550 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3551
3552 /*
3553 * Compute the max allowed sectors per IO: The controller info has two
3554 * limits on max sectors. Driver should use the minimum of these two.
3555 *
3556 * 1 << stripe_sz_ops.min = max sectors per strip
3557 *
3558 * Note that older firmwares ( < FW ver 30) didn't report information
3559 * to calculate max_sectors_1. So the number ended up as zero always.
3560 */
3561 tmp_sectors = 0;
3562 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3563
3564 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3565 ctrl_info->max_strips_per_io;
3566 max_sectors_2 = ctrl_info->max_request_size;
3567
3568 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3569 instance->disableOnlineCtrlReset =
3570 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3571 }
3572
3573 instance->max_sectors_per_req = instance->max_num_sge *
3574 PAGE_SIZE / 512;
3575 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3576 instance->max_sectors_per_req = tmp_sectors;
3577
3578 kfree(ctrl_info);
3579
3580 /*
3581 * Setup tasklet for cmd completion
3582 */
3583
3584 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3585 (unsigned long)instance);
3586
3587 return 0;
3588
3589 fail_init_adapter:
3590 fail_ready_state:
3591 iounmap(instance->reg_set);
3592
3593 fail_ioremap:
3594 pci_release_selected_regions(instance->pdev, instance->bar);
3595
3596 return -EINVAL;
3597 }
3598
3599 /**
3600 * megasas_release_mfi - Reverses the FW initialization
3601 * @intance: Adapter soft state
3602 */
3603 static void megasas_release_mfi(struct megasas_instance *instance)
3604 {
3605 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3606
3607 if (instance->reply_queue)
3608 pci_free_consistent(instance->pdev, reply_q_sz,
3609 instance->reply_queue, instance->reply_queue_h);
3610
3611 megasas_free_cmds(instance);
3612
3613 iounmap(instance->reg_set);
3614
3615 pci_release_selected_regions(instance->pdev, instance->bar);
3616 }
3617
3618 /**
3619 * megasas_get_seq_num - Gets latest event sequence numbers
3620 * @instance: Adapter soft state
3621 * @eli: FW event log sequence numbers information
3622 *
3623 * FW maintains a log of all events in a non-volatile area. Upper layers would
3624 * usually find out the latest sequence number of the events, the seq number at
3625 * the boot etc. They would "read" all the events below the latest seq number
3626 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3627 * number), they would subsribe to AEN (asynchronous event notification) and
3628 * wait for the events to happen.
3629 */
3630 static int
3631 megasas_get_seq_num(struct megasas_instance *instance,
3632 struct megasas_evt_log_info *eli)
3633 {
3634 struct megasas_cmd *cmd;
3635 struct megasas_dcmd_frame *dcmd;
3636 struct megasas_evt_log_info *el_info;
3637 dma_addr_t el_info_h = 0;
3638
3639 cmd = megasas_get_cmd(instance);
3640
3641 if (!cmd) {
3642 return -ENOMEM;
3643 }
3644
3645 dcmd = &cmd->frame->dcmd;
3646 el_info = pci_alloc_consistent(instance->pdev,
3647 sizeof(struct megasas_evt_log_info),
3648 &el_info_h);
3649
3650 if (!el_info) {
3651 megasas_return_cmd(instance, cmd);
3652 return -ENOMEM;
3653 }
3654
3655 memset(el_info, 0, sizeof(*el_info));
3656 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3657
3658 dcmd->cmd = MFI_CMD_DCMD;
3659 dcmd->cmd_status = 0x0;
3660 dcmd->sge_count = 1;
3661 dcmd->flags = MFI_FRAME_DIR_READ;
3662 dcmd->timeout = 0;
3663 dcmd->pad_0 = 0;
3664 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3665 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3666 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3667 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3668
3669 megasas_issue_blocked_cmd(instance, cmd);
3670
3671 /*
3672 * Copy the data back into callers buffer
3673 */
3674 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3675
3676 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3677 el_info, el_info_h);
3678
3679 megasas_return_cmd(instance, cmd);
3680
3681 return 0;
3682 }
3683
3684 /**
3685 * megasas_register_aen - Registers for asynchronous event notification
3686 * @instance: Adapter soft state
3687 * @seq_num: The starting sequence number
3688 * @class_locale: Class of the event
3689 *
3690 * This function subscribes for AEN for events beyond the @seq_num. It requests
3691 * to be notified if and only if the event is of type @class_locale
3692 */
3693 static int
3694 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3695 u32 class_locale_word)
3696 {
3697 int ret_val;
3698 struct megasas_cmd *cmd;
3699 struct megasas_dcmd_frame *dcmd;
3700 union megasas_evt_class_locale curr_aen;
3701 union megasas_evt_class_locale prev_aen;
3702
3703 /*
3704 * If there an AEN pending already (aen_cmd), check if the
3705 * class_locale of that pending AEN is inclusive of the new
3706 * AEN request we currently have. If it is, then we don't have
3707 * to do anything. In other words, whichever events the current
3708 * AEN request is subscribing to, have already been subscribed
3709 * to.
3710 *
3711 * If the old_cmd is _not_ inclusive, then we have to abort
3712 * that command, form a class_locale that is superset of both
3713 * old and current and re-issue to the FW
3714 */
3715
3716 curr_aen.word = class_locale_word;
3717
3718 if (instance->aen_cmd) {
3719
3720 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3721
3722 /*
3723 * A class whose enum value is smaller is inclusive of all
3724 * higher values. If a PROGRESS (= -1) was previously
3725 * registered, then a new registration requests for higher
3726 * classes need not be sent to FW. They are automatically
3727 * included.
3728 *
3729 * Locale numbers don't have such hierarchy. They are bitmap
3730 * values
3731 */
3732 if ((prev_aen.members.class <= curr_aen.members.class) &&
3733 !((prev_aen.members.locale & curr_aen.members.locale) ^
3734 curr_aen.members.locale)) {
3735 /*
3736 * Previously issued event registration includes
3737 * current request. Nothing to do.
3738 */
3739 return 0;
3740 } else {
3741 curr_aen.members.locale |= prev_aen.members.locale;
3742
3743 if (prev_aen.members.class < curr_aen.members.class)
3744 curr_aen.members.class = prev_aen.members.class;
3745
3746 instance->aen_cmd->abort_aen = 1;
3747 ret_val = megasas_issue_blocked_abort_cmd(instance,
3748 instance->
3749 aen_cmd);
3750
3751 if (ret_val) {
3752 printk(KERN_DEBUG "megasas: Failed to abort "
3753 "previous AEN command\n");
3754 return ret_val;
3755 }
3756 }
3757 }
3758
3759 cmd = megasas_get_cmd(instance);
3760
3761 if (!cmd)
3762 return -ENOMEM;
3763
3764 dcmd = &cmd->frame->dcmd;
3765
3766 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3767
3768 /*
3769 * Prepare DCMD for aen registration
3770 */
3771 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3772
3773 dcmd->cmd = MFI_CMD_DCMD;
3774 dcmd->cmd_status = 0x0;
3775 dcmd->sge_count = 1;
3776 dcmd->flags = MFI_FRAME_DIR_READ;
3777 dcmd->timeout = 0;
3778 dcmd->pad_0 = 0;
3779 instance->last_seq_num = seq_num;
3780 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3781 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3782 dcmd->mbox.w[0] = seq_num;
3783 dcmd->mbox.w[1] = curr_aen.word;
3784 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3785 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3786
3787 if (instance->aen_cmd != NULL) {
3788 megasas_return_cmd(instance, cmd);
3789 return 0;
3790 }
3791
3792 /*
3793 * Store reference to the cmd used to register for AEN. When an
3794 * application wants us to register for AEN, we have to abort this
3795 * cmd and re-register with a new EVENT LOCALE supplied by that app
3796 */
3797 instance->aen_cmd = cmd;
3798
3799 /*
3800 * Issue the aen registration frame
3801 */
3802 instance->instancet->issue_dcmd(instance, cmd);
3803
3804 return 0;
3805 }
3806
3807 /**
3808 * megasas_start_aen - Subscribes to AEN during driver load time
3809 * @instance: Adapter soft state
3810 */
3811 static int megasas_start_aen(struct megasas_instance *instance)
3812 {
3813 struct megasas_evt_log_info eli;
3814 union megasas_evt_class_locale class_locale;
3815
3816 /*
3817 * Get the latest sequence number from FW
3818 */
3819 memset(&eli, 0, sizeof(eli));
3820
3821 if (megasas_get_seq_num(instance, &eli))
3822 return -1;
3823
3824 /*
3825 * Register AEN with FW for latest sequence number plus 1
3826 */
3827 class_locale.members.reserved = 0;
3828 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3829 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3830
3831 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3832 class_locale.word);
3833 }
3834
3835 /**
3836 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3837 * @instance: Adapter soft state
3838 */
3839 static int megasas_io_attach(struct megasas_instance *instance)
3840 {
3841 struct Scsi_Host *host = instance->host;
3842
3843 /*
3844 * Export parameters required by SCSI mid-layer
3845 */
3846 host->irq = instance->pdev->irq;
3847 host->unique_id = instance->unique_id;
3848 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3849 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3850 host->can_queue =
3851 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3852 } else
3853 host->can_queue =
3854 instance->max_fw_cmds - MEGASAS_INT_CMDS;
3855 host->this_id = instance->init_id;
3856 host->sg_tablesize = instance->max_num_sge;
3857
3858 if (instance->fw_support_ieee)
3859 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
3860
3861 /*
3862 * Check if the module parameter value for max_sectors can be used
3863 */
3864 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3865 instance->max_sectors_per_req = max_sectors;
3866 else {
3867 if (max_sectors) {
3868 if (((instance->pdev->device ==
3869 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3870 (instance->pdev->device ==
3871 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3872 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3873 instance->max_sectors_per_req = max_sectors;
3874 } else {
3875 printk(KERN_INFO "megasas: max_sectors should be > 0"
3876 "and <= %d (or < 1MB for GEN2 controller)\n",
3877 instance->max_sectors_per_req);
3878 }
3879 }
3880 }
3881
3882 host->max_sectors = instance->max_sectors_per_req;
3883 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
3884 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3885 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3886 host->max_lun = MEGASAS_MAX_LUN;
3887 host->max_cmd_len = 16;
3888
3889 /* Fusion only supports host reset */
3890 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3891 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3892 host->hostt->eh_device_reset_handler = NULL;
3893 host->hostt->eh_bus_reset_handler = NULL;
3894 }
3895
3896 /*
3897 * Notify the mid-layer about the new controller
3898 */
3899 if (scsi_add_host(host, &instance->pdev->dev)) {
3900 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3901 return -ENODEV;
3902 }
3903
3904 /*
3905 * Trigger SCSI to scan our drives
3906 */
3907 scsi_scan_host(host);
3908 return 0;
3909 }
3910
3911 static int
3912 megasas_set_dma_mask(struct pci_dev *pdev)
3913 {
3914 /*
3915 * All our contollers are capable of performing 64-bit DMA
3916 */
3917 if (IS_DMA64) {
3918 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
3919
3920 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3921 goto fail_set_dma_mask;
3922 }
3923 } else {
3924 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3925 goto fail_set_dma_mask;
3926 }
3927 return 0;
3928
3929 fail_set_dma_mask:
3930 return 1;
3931 }
3932
3933 /**
3934 * megasas_probe_one - PCI hotplug entry point
3935 * @pdev: PCI device structure
3936 * @id: PCI ids of supported hotplugged adapter
3937 */
3938 static int __devinit
3939 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3940 {
3941 int rval, pos, i, j;
3942 struct Scsi_Host *host;
3943 struct megasas_instance *instance;
3944 u16 control = 0;
3945
3946 /* Reset MSI-X in the kdump kernel */
3947 if (reset_devices) {
3948 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3949 if (pos) {
3950 pci_read_config_word(pdev, msi_control_reg(pos),
3951 &control);
3952 if (control & PCI_MSIX_FLAGS_ENABLE) {
3953 dev_info(&pdev->dev, "resetting MSI-X\n");
3954 pci_write_config_word(pdev,
3955 msi_control_reg(pos),
3956 control &
3957 ~PCI_MSIX_FLAGS_ENABLE);
3958 }
3959 }
3960 }
3961
3962 /*
3963 * Announce PCI information
3964 */
3965 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
3966 pdev->vendor, pdev->device, pdev->subsystem_vendor,
3967 pdev->subsystem_device);
3968
3969 printk("bus %d:slot %d:func %d\n",
3970 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
3971
3972 /*
3973 * PCI prepping: enable device set bus mastering and dma mask
3974 */
3975 rval = pci_enable_device_mem(pdev);
3976
3977 if (rval) {
3978 return rval;
3979 }
3980
3981 pci_set_master(pdev);
3982
3983 if (megasas_set_dma_mask(pdev))
3984 goto fail_set_dma_mask;
3985
3986 host = scsi_host_alloc(&megasas_template,
3987 sizeof(struct megasas_instance));
3988
3989 if (!host) {
3990 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
3991 goto fail_alloc_instance;
3992 }
3993
3994 instance = (struct megasas_instance *)host->hostdata;
3995 memset(instance, 0, sizeof(*instance));
3996 atomic_set( &instance->fw_reset_no_pci_access, 0 );
3997 instance->pdev = pdev;
3998
3999 switch (instance->pdev->device) {
4000 case PCI_DEVICE_ID_LSI_FUSION:
4001 case PCI_DEVICE_ID_LSI_INVADER:
4002 {
4003 struct fusion_context *fusion;
4004
4005 instance->ctrl_context =
4006 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4007 if (!instance->ctrl_context) {
4008 printk(KERN_DEBUG "megasas: Failed to allocate "
4009 "memory for Fusion context info\n");
4010 goto fail_alloc_dma_buf;
4011 }
4012 fusion = instance->ctrl_context;
4013 INIT_LIST_HEAD(&fusion->cmd_pool);
4014 spin_lock_init(&fusion->cmd_pool_lock);
4015 }
4016 break;
4017 default: /* For all other supported controllers */
4018
4019 instance->producer =
4020 pci_alloc_consistent(pdev, sizeof(u32),
4021 &instance->producer_h);
4022 instance->consumer =
4023 pci_alloc_consistent(pdev, sizeof(u32),
4024 &instance->consumer_h);
4025
4026 if (!instance->producer || !instance->consumer) {
4027 printk(KERN_DEBUG "megasas: Failed to allocate"
4028 "memory for producer, consumer\n");
4029 goto fail_alloc_dma_buf;
4030 }
4031
4032 *instance->producer = 0;
4033 *instance->consumer = 0;
4034 break;
4035 }
4036
4037 megasas_poll_wait_aen = 0;
4038 instance->flag_ieee = 0;
4039 instance->ev = NULL;
4040 instance->issuepend_done = 1;
4041 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4042 megasas_poll_wait_aen = 0;
4043
4044 instance->evt_detail = pci_alloc_consistent(pdev,
4045 sizeof(struct
4046 megasas_evt_detail),
4047 &instance->evt_detail_h);
4048
4049 if (!instance->evt_detail) {
4050 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4051 "event detail structure\n");
4052 goto fail_alloc_dma_buf;
4053 }
4054
4055 /*
4056 * Initialize locks and queues
4057 */
4058 INIT_LIST_HEAD(&instance->cmd_pool);
4059 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4060
4061 atomic_set(&instance->fw_outstanding,0);
4062
4063 init_waitqueue_head(&instance->int_cmd_wait_q);
4064 init_waitqueue_head(&instance->abort_cmd_wait_q);
4065
4066 spin_lock_init(&instance->cmd_pool_lock);
4067 spin_lock_init(&instance->hba_lock);
4068 spin_lock_init(&instance->completion_lock);
4069
4070 mutex_init(&instance->aen_mutex);
4071 mutex_init(&instance->reset_mutex);
4072
4073 /*
4074 * Initialize PCI related and misc parameters
4075 */
4076 instance->host = host;
4077 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4078 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4079
4080 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4081 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4082 instance->flag_ieee = 1;
4083 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4084 } else
4085 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4086
4087 megasas_dbg_lvl = 0;
4088 instance->flag = 0;
4089 instance->unload = 1;
4090 instance->last_time = 0;
4091 instance->disableOnlineCtrlReset = 1;
4092
4093 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4094 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4095 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4096 else
4097 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4098
4099 /*
4100 * Initialize MFI Firmware
4101 */
4102 if (megasas_init_fw(instance))
4103 goto fail_init_mfi;
4104
4105 /*
4106 * Register IRQ
4107 */
4108 if (instance->msix_vectors) {
4109 for (i = 0 ; i < instance->msix_vectors; i++) {
4110 instance->irq_context[i].instance = instance;
4111 instance->irq_context[i].MSIxIndex = i;
4112 if (request_irq(instance->msixentry[i].vector,
4113 instance->instancet->service_isr, 0,
4114 "megasas",
4115 &instance->irq_context[i])) {
4116 printk(KERN_DEBUG "megasas: Failed to "
4117 "register IRQ for vector %d.\n", i);
4118 for (j = 0 ; j < i ; j++)
4119 free_irq(
4120 instance->msixentry[j].vector,
4121 &instance->irq_context[j]);
4122 goto fail_irq;
4123 }
4124 }
4125 } else {
4126 instance->irq_context[0].instance = instance;
4127 instance->irq_context[0].MSIxIndex = 0;
4128 if (request_irq(pdev->irq, instance->instancet->service_isr,
4129 IRQF_SHARED, "megasas",
4130 &instance->irq_context[0])) {
4131 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4132 goto fail_irq;
4133 }
4134 }
4135
4136 instance->instancet->enable_intr(instance->reg_set);
4137
4138 /*
4139 * Store instance in PCI softstate
4140 */
4141 pci_set_drvdata(pdev, instance);
4142
4143 /*
4144 * Add this controller to megasas_mgmt_info structure so that it
4145 * can be exported to management applications
4146 */
4147 megasas_mgmt_info.count++;
4148 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4149 megasas_mgmt_info.max_index++;
4150
4151 /*
4152 * Register with SCSI mid-layer
4153 */
4154 if (megasas_io_attach(instance))
4155 goto fail_io_attach;
4156
4157 instance->unload = 0;
4158
4159 /*
4160 * Initiate AEN (Asynchronous Event Notification)
4161 */
4162 if (megasas_start_aen(instance)) {
4163 printk(KERN_DEBUG "megasas: start aen failed\n");
4164 goto fail_start_aen;
4165 }
4166
4167 return 0;
4168
4169 fail_start_aen:
4170 fail_io_attach:
4171 megasas_mgmt_info.count--;
4172 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4173 megasas_mgmt_info.max_index--;
4174
4175 pci_set_drvdata(pdev, NULL);
4176 instance->instancet->disable_intr(instance->reg_set);
4177 if (instance->msix_vectors)
4178 for (i = 0 ; i < instance->msix_vectors; i++)
4179 free_irq(instance->msixentry[i].vector,
4180 &instance->irq_context[i]);
4181 else
4182 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4183 fail_irq:
4184 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4185 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4186 megasas_release_fusion(instance);
4187 else
4188 megasas_release_mfi(instance);
4189 fail_init_mfi:
4190 if (instance->msix_vectors)
4191 pci_disable_msix(instance->pdev);
4192 fail_alloc_dma_buf:
4193 if (instance->evt_detail)
4194 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4195 instance->evt_detail,
4196 instance->evt_detail_h);
4197
4198 if (instance->producer)
4199 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4200 instance->producer_h);
4201 if (instance->consumer)
4202 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4203 instance->consumer_h);
4204 scsi_host_put(host);
4205
4206 fail_alloc_instance:
4207 fail_set_dma_mask:
4208 pci_disable_device(pdev);
4209
4210 return -ENODEV;
4211 }
4212
4213 /**
4214 * megasas_flush_cache - Requests FW to flush all its caches
4215 * @instance: Adapter soft state
4216 */
4217 static void megasas_flush_cache(struct megasas_instance *instance)
4218 {
4219 struct megasas_cmd *cmd;
4220 struct megasas_dcmd_frame *dcmd;
4221
4222 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4223 return;
4224
4225 cmd = megasas_get_cmd(instance);
4226
4227 if (!cmd)
4228 return;
4229
4230 dcmd = &cmd->frame->dcmd;
4231
4232 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4233
4234 dcmd->cmd = MFI_CMD_DCMD;
4235 dcmd->cmd_status = 0x0;
4236 dcmd->sge_count = 0;
4237 dcmd->flags = MFI_FRAME_DIR_NONE;
4238 dcmd->timeout = 0;
4239 dcmd->pad_0 = 0;
4240 dcmd->data_xfer_len = 0;
4241 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4242 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4243
4244 megasas_issue_blocked_cmd(instance, cmd);
4245
4246 megasas_return_cmd(instance, cmd);
4247
4248 return;
4249 }
4250
4251 /**
4252 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4253 * @instance: Adapter soft state
4254 * @opcode: Shutdown/Hibernate
4255 */
4256 static void megasas_shutdown_controller(struct megasas_instance *instance,
4257 u32 opcode)
4258 {
4259 struct megasas_cmd *cmd;
4260 struct megasas_dcmd_frame *dcmd;
4261
4262 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4263 return;
4264
4265 cmd = megasas_get_cmd(instance);
4266
4267 if (!cmd)
4268 return;
4269
4270 if (instance->aen_cmd)
4271 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4272 if (instance->map_update_cmd)
4273 megasas_issue_blocked_abort_cmd(instance,
4274 instance->map_update_cmd);
4275 dcmd = &cmd->frame->dcmd;
4276
4277 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4278
4279 dcmd->cmd = MFI_CMD_DCMD;
4280 dcmd->cmd_status = 0x0;
4281 dcmd->sge_count = 0;
4282 dcmd->flags = MFI_FRAME_DIR_NONE;
4283 dcmd->timeout = 0;
4284 dcmd->pad_0 = 0;
4285 dcmd->data_xfer_len = 0;
4286 dcmd->opcode = opcode;
4287
4288 megasas_issue_blocked_cmd(instance, cmd);
4289
4290 megasas_return_cmd(instance, cmd);
4291
4292 return;
4293 }
4294
4295 #ifdef CONFIG_PM
4296 /**
4297 * megasas_suspend - driver suspend entry point
4298 * @pdev: PCI device structure
4299 * @state: PCI power state to suspend routine
4300 */
4301 static int
4302 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4303 {
4304 struct Scsi_Host *host;
4305 struct megasas_instance *instance;
4306 int i;
4307
4308 instance = pci_get_drvdata(pdev);
4309 host = instance->host;
4310 instance->unload = 1;
4311
4312 megasas_flush_cache(instance);
4313 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4314
4315 /* cancel the delayed work if this work still in queue */
4316 if (instance->ev != NULL) {
4317 struct megasas_aen_event *ev = instance->ev;
4318 cancel_delayed_work_sync(
4319 (struct delayed_work *)&ev->hotplug_work);
4320 instance->ev = NULL;
4321 }
4322
4323 tasklet_kill(&instance->isr_tasklet);
4324
4325 pci_set_drvdata(instance->pdev, instance);
4326 instance->instancet->disable_intr(instance->reg_set);
4327
4328 if (instance->msix_vectors)
4329 for (i = 0 ; i < instance->msix_vectors; i++)
4330 free_irq(instance->msixentry[i].vector,
4331 &instance->irq_context[i]);
4332 else
4333 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4334 if (instance->msix_vectors)
4335 pci_disable_msix(instance->pdev);
4336
4337 pci_save_state(pdev);
4338 pci_disable_device(pdev);
4339
4340 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4341
4342 return 0;
4343 }
4344
4345 /**
4346 * megasas_resume- driver resume entry point
4347 * @pdev: PCI device structure
4348 */
4349 static int
4350 megasas_resume(struct pci_dev *pdev)
4351 {
4352 int rval, i, j;
4353 struct Scsi_Host *host;
4354 struct megasas_instance *instance;
4355
4356 instance = pci_get_drvdata(pdev);
4357 host = instance->host;
4358 pci_set_power_state(pdev, PCI_D0);
4359 pci_enable_wake(pdev, PCI_D0, 0);
4360 pci_restore_state(pdev);
4361
4362 /*
4363 * PCI prepping: enable device set bus mastering and dma mask
4364 */
4365 rval = pci_enable_device_mem(pdev);
4366
4367 if (rval) {
4368 printk(KERN_ERR "megasas: Enable device failed\n");
4369 return rval;
4370 }
4371
4372 pci_set_master(pdev);
4373
4374 if (megasas_set_dma_mask(pdev))
4375 goto fail_set_dma_mask;
4376
4377 /*
4378 * Initialize MFI Firmware
4379 */
4380
4381 atomic_set(&instance->fw_outstanding, 0);
4382
4383 /*
4384 * We expect the FW state to be READY
4385 */
4386 if (megasas_transition_to_ready(instance, 0))
4387 goto fail_ready_state;
4388
4389 /* Now re-enable MSI-X */
4390 if (instance->msix_vectors)
4391 pci_enable_msix(instance->pdev, instance->msixentry,
4392 instance->msix_vectors);
4393
4394 switch (instance->pdev->device) {
4395 case PCI_DEVICE_ID_LSI_FUSION:
4396 case PCI_DEVICE_ID_LSI_INVADER:
4397 {
4398 megasas_reset_reply_desc(instance);
4399 if (megasas_ioc_init_fusion(instance)) {
4400 megasas_free_cmds(instance);
4401 megasas_free_cmds_fusion(instance);
4402 goto fail_init_mfi;
4403 }
4404 if (!megasas_get_map_info(instance))
4405 megasas_sync_map_info(instance);
4406 }
4407 break;
4408 default:
4409 *instance->producer = 0;
4410 *instance->consumer = 0;
4411 if (megasas_issue_init_mfi(instance))
4412 goto fail_init_mfi;
4413 break;
4414 }
4415
4416 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4417 (unsigned long)instance);
4418
4419 /*
4420 * Register IRQ
4421 */
4422 if (instance->msix_vectors) {
4423 for (i = 0 ; i < instance->msix_vectors; i++) {
4424 instance->irq_context[i].instance = instance;
4425 instance->irq_context[i].MSIxIndex = i;
4426 if (request_irq(instance->msixentry[i].vector,
4427 instance->instancet->service_isr, 0,
4428 "megasas",
4429 &instance->irq_context[i])) {
4430 printk(KERN_DEBUG "megasas: Failed to "
4431 "register IRQ for vector %d.\n", i);
4432 for (j = 0 ; j < i ; j++)
4433 free_irq(
4434 instance->msixentry[j].vector,
4435 &instance->irq_context[j]);
4436 goto fail_irq;
4437 }
4438 }
4439 } else {
4440 instance->irq_context[0].instance = instance;
4441 instance->irq_context[0].MSIxIndex = 0;
4442 if (request_irq(pdev->irq, instance->instancet->service_isr,
4443 IRQF_SHARED, "megasas",
4444 &instance->irq_context[0])) {
4445 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4446 goto fail_irq;
4447 }
4448 }
4449
4450 instance->instancet->enable_intr(instance->reg_set);
4451 instance->unload = 0;
4452
4453 /*
4454 * Initiate AEN (Asynchronous Event Notification)
4455 */
4456 if (megasas_start_aen(instance))
4457 printk(KERN_ERR "megasas: Start AEN failed\n");
4458
4459 return 0;
4460
4461 fail_irq:
4462 fail_init_mfi:
4463 if (instance->evt_detail)
4464 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4465 instance->evt_detail,
4466 instance->evt_detail_h);
4467
4468 if (instance->producer)
4469 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4470 instance->producer_h);
4471 if (instance->consumer)
4472 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4473 instance->consumer_h);
4474 scsi_host_put(host);
4475
4476 fail_set_dma_mask:
4477 fail_ready_state:
4478
4479 pci_disable_device(pdev);
4480
4481 return -ENODEV;
4482 }
4483 #else
4484 #define megasas_suspend NULL
4485 #define megasas_resume NULL
4486 #endif
4487
4488 /**
4489 * megasas_detach_one - PCI hot"un"plug entry point
4490 * @pdev: PCI device structure
4491 */
4492 static void __devexit megasas_detach_one(struct pci_dev *pdev)
4493 {
4494 int i;
4495 struct Scsi_Host *host;
4496 struct megasas_instance *instance;
4497 struct fusion_context *fusion;
4498
4499 instance = pci_get_drvdata(pdev);
4500 instance->unload = 1;
4501 host = instance->host;
4502 fusion = instance->ctrl_context;
4503
4504 scsi_remove_host(instance->host);
4505 megasas_flush_cache(instance);
4506 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4507
4508 /* cancel the delayed work if this work still in queue*/
4509 if (instance->ev != NULL) {
4510 struct megasas_aen_event *ev = instance->ev;
4511 cancel_delayed_work_sync(
4512 (struct delayed_work *)&ev->hotplug_work);
4513 instance->ev = NULL;
4514 }
4515
4516 tasklet_kill(&instance->isr_tasklet);
4517
4518 /*
4519 * Take the instance off the instance array. Note that we will not
4520 * decrement the max_index. We let this array be sparse array
4521 */
4522 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4523 if (megasas_mgmt_info.instance[i] == instance) {
4524 megasas_mgmt_info.count--;
4525 megasas_mgmt_info.instance[i] = NULL;
4526
4527 break;
4528 }
4529 }
4530
4531 pci_set_drvdata(instance->pdev, NULL);
4532
4533 instance->instancet->disable_intr(instance->reg_set);
4534
4535 if (instance->msix_vectors)
4536 for (i = 0 ; i < instance->msix_vectors; i++)
4537 free_irq(instance->msixentry[i].vector,
4538 &instance->irq_context[i]);
4539 else
4540 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4541 if (instance->msix_vectors)
4542 pci_disable_msix(instance->pdev);
4543
4544 switch (instance->pdev->device) {
4545 case PCI_DEVICE_ID_LSI_FUSION:
4546 case PCI_DEVICE_ID_LSI_INVADER:
4547 megasas_release_fusion(instance);
4548 for (i = 0; i < 2 ; i++)
4549 if (fusion->ld_map[i])
4550 dma_free_coherent(&instance->pdev->dev,
4551 fusion->map_sz,
4552 fusion->ld_map[i],
4553 fusion->
4554 ld_map_phys[i]);
4555 kfree(instance->ctrl_context);
4556 break;
4557 default:
4558 megasas_release_mfi(instance);
4559 pci_free_consistent(pdev,
4560 sizeof(struct megasas_evt_detail),
4561 instance->evt_detail,
4562 instance->evt_detail_h);
4563 pci_free_consistent(pdev, sizeof(u32),
4564 instance->producer,
4565 instance->producer_h);
4566 pci_free_consistent(pdev, sizeof(u32),
4567 instance->consumer,
4568 instance->consumer_h);
4569 break;
4570 }
4571
4572 scsi_host_put(host);
4573
4574 pci_set_drvdata(pdev, NULL);
4575
4576 pci_disable_device(pdev);
4577
4578 return;
4579 }
4580
4581 /**
4582 * megasas_shutdown - Shutdown entry point
4583 * @device: Generic device structure
4584 */
4585 static void megasas_shutdown(struct pci_dev *pdev)
4586 {
4587 int i;
4588 struct megasas_instance *instance = pci_get_drvdata(pdev);
4589
4590 instance->unload = 1;
4591 megasas_flush_cache(instance);
4592 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4593 instance->instancet->disable_intr(instance->reg_set);
4594 if (instance->msix_vectors)
4595 for (i = 0 ; i < instance->msix_vectors; i++)
4596 free_irq(instance->msixentry[i].vector,
4597 &instance->irq_context[i]);
4598 else
4599 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4600 if (instance->msix_vectors)
4601 pci_disable_msix(instance->pdev);
4602 }
4603
4604 /**
4605 * megasas_mgmt_open - char node "open" entry point
4606 */
4607 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4608 {
4609 /*
4610 * Allow only those users with admin rights
4611 */
4612 if (!capable(CAP_SYS_ADMIN))
4613 return -EACCES;
4614
4615 return 0;
4616 }
4617
4618 /**
4619 * megasas_mgmt_fasync - Async notifier registration from applications
4620 *
4621 * This function adds the calling process to a driver global queue. When an
4622 * event occurs, SIGIO will be sent to all processes in this queue.
4623 */
4624 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4625 {
4626 int rc;
4627
4628 mutex_lock(&megasas_async_queue_mutex);
4629
4630 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4631
4632 mutex_unlock(&megasas_async_queue_mutex);
4633
4634 if (rc >= 0) {
4635 /* For sanity check when we get ioctl */
4636 filep->private_data = filep;
4637 return 0;
4638 }
4639
4640 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4641
4642 return rc;
4643 }
4644
4645 /**
4646 * megasas_mgmt_poll - char node "poll" entry point
4647 * */
4648 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4649 {
4650 unsigned int mask;
4651 unsigned long flags;
4652 poll_wait(file, &megasas_poll_wait, wait);
4653 spin_lock_irqsave(&poll_aen_lock, flags);
4654 if (megasas_poll_wait_aen)
4655 mask = (POLLIN | POLLRDNORM);
4656 else
4657 mask = 0;
4658 spin_unlock_irqrestore(&poll_aen_lock, flags);
4659 return mask;
4660 }
4661
4662 /**
4663 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4664 * @instance: Adapter soft state
4665 * @argp: User's ioctl packet
4666 */
4667 static int
4668 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4669 struct megasas_iocpacket __user * user_ioc,
4670 struct megasas_iocpacket *ioc)
4671 {
4672 struct megasas_sge32 *kern_sge32;
4673 struct megasas_cmd *cmd;
4674 void *kbuff_arr[MAX_IOCTL_SGE];
4675 dma_addr_t buf_handle = 0;
4676 int error = 0, i;
4677 void *sense = NULL;
4678 dma_addr_t sense_handle;
4679 unsigned long *sense_ptr;
4680
4681 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4682
4683 if (ioc->sge_count > MAX_IOCTL_SGE) {
4684 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4685 ioc->sge_count, MAX_IOCTL_SGE);
4686 return -EINVAL;
4687 }
4688
4689 cmd = megasas_get_cmd(instance);
4690 if (!cmd) {
4691 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4692 return -ENOMEM;
4693 }
4694
4695 /*
4696 * User's IOCTL packet has 2 frames (maximum). Copy those two
4697 * frames into our cmd's frames. cmd->frame's context will get
4698 * overwritten when we copy from user's frames. So set that value
4699 * alone separately
4700 */
4701 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4702 cmd->frame->hdr.context = cmd->index;
4703 cmd->frame->hdr.pad_0 = 0;
4704 cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 |
4705 MFI_FRAME_SENSE64);
4706
4707 /*
4708 * The management interface between applications and the fw uses
4709 * MFI frames. E.g, RAID configuration changes, LD property changes
4710 * etc are accomplishes through different kinds of MFI frames. The
4711 * driver needs to care only about substituting user buffers with
4712 * kernel buffers in SGLs. The location of SGL is embedded in the
4713 * struct iocpacket itself.
4714 */
4715 kern_sge32 = (struct megasas_sge32 *)
4716 ((unsigned long)cmd->frame + ioc->sgl_off);
4717
4718 /*
4719 * For each user buffer, create a mirror buffer and copy in
4720 */
4721 for (i = 0; i < ioc->sge_count; i++) {
4722 if (!ioc->sgl[i].iov_len)
4723 continue;
4724
4725 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
4726 ioc->sgl[i].iov_len,
4727 &buf_handle, GFP_KERNEL);
4728 if (!kbuff_arr[i]) {
4729 printk(KERN_DEBUG "megasas: Failed to alloc "
4730 "kernel SGL buffer for IOCTL \n");
4731 error = -ENOMEM;
4732 goto out;
4733 }
4734
4735 /*
4736 * We don't change the dma_coherent_mask, so
4737 * pci_alloc_consistent only returns 32bit addresses
4738 */
4739 kern_sge32[i].phys_addr = (u32) buf_handle;
4740 kern_sge32[i].length = ioc->sgl[i].iov_len;
4741
4742 /*
4743 * We created a kernel buffer corresponding to the
4744 * user buffer. Now copy in from the user buffer
4745 */
4746 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4747 (u32) (ioc->sgl[i].iov_len))) {
4748 error = -EFAULT;
4749 goto out;
4750 }
4751 }
4752
4753 if (ioc->sense_len) {
4754 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4755 &sense_handle, GFP_KERNEL);
4756 if (!sense) {
4757 error = -ENOMEM;
4758 goto out;
4759 }
4760
4761 sense_ptr =
4762 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
4763 *sense_ptr = sense_handle;
4764 }
4765
4766 /*
4767 * Set the sync_cmd flag so that the ISR knows not to complete this
4768 * cmd to the SCSI mid-layer
4769 */
4770 cmd->sync_cmd = 1;
4771 megasas_issue_blocked_cmd(instance, cmd);
4772 cmd->sync_cmd = 0;
4773
4774 /*
4775 * copy out the kernel buffers to user buffers
4776 */
4777 for (i = 0; i < ioc->sge_count; i++) {
4778 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4779 ioc->sgl[i].iov_len)) {
4780 error = -EFAULT;
4781 goto out;
4782 }
4783 }
4784
4785 /*
4786 * copy out the sense
4787 */
4788 if (ioc->sense_len) {
4789 /*
4790 * sense_ptr points to the location that has the user
4791 * sense buffer address
4792 */
4793 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4794 ioc->sense_off);
4795
4796 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4797 sense, ioc->sense_len)) {
4798 printk(KERN_ERR "megasas: Failed to copy out to user "
4799 "sense data\n");
4800 error = -EFAULT;
4801 goto out;
4802 }
4803 }
4804
4805 /*
4806 * copy the status codes returned by the fw
4807 */
4808 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4809 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4810 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4811 error = -EFAULT;
4812 }
4813
4814 out:
4815 if (sense) {
4816 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
4817 sense, sense_handle);
4818 }
4819
4820 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
4821 dma_free_coherent(&instance->pdev->dev,
4822 kern_sge32[i].length,
4823 kbuff_arr[i], kern_sge32[i].phys_addr);
4824 }
4825
4826 megasas_return_cmd(instance, cmd);
4827 return error;
4828 }
4829
4830 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4831 {
4832 struct megasas_iocpacket __user *user_ioc =
4833 (struct megasas_iocpacket __user *)arg;
4834 struct megasas_iocpacket *ioc;
4835 struct megasas_instance *instance;
4836 int error;
4837 int i;
4838 unsigned long flags;
4839 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4840
4841 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4842 if (!ioc)
4843 return -ENOMEM;
4844
4845 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4846 error = -EFAULT;
4847 goto out_kfree_ioc;
4848 }
4849
4850 instance = megasas_lookup_instance(ioc->host_no);
4851 if (!instance) {
4852 error = -ENODEV;
4853 goto out_kfree_ioc;
4854 }
4855
4856 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4857 printk(KERN_ERR "Controller in crit error\n");
4858 error = -ENODEV;
4859 goto out_kfree_ioc;
4860 }
4861
4862 if (instance->unload == 1) {
4863 error = -ENODEV;
4864 goto out_kfree_ioc;
4865 }
4866
4867 /*
4868 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4869 */
4870 if (down_interruptible(&instance->ioctl_sem)) {
4871 error = -ERESTARTSYS;
4872 goto out_kfree_ioc;
4873 }
4874
4875 for (i = 0; i < wait_time; i++) {
4876
4877 spin_lock_irqsave(&instance->hba_lock, flags);
4878 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4879 spin_unlock_irqrestore(&instance->hba_lock, flags);
4880 break;
4881 }
4882 spin_unlock_irqrestore(&instance->hba_lock, flags);
4883
4884 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4885 printk(KERN_NOTICE "megasas: waiting"
4886 "for controller reset to finish\n");
4887 }
4888
4889 msleep(1000);
4890 }
4891
4892 spin_lock_irqsave(&instance->hba_lock, flags);
4893 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4894 spin_unlock_irqrestore(&instance->hba_lock, flags);
4895
4896 printk(KERN_ERR "megaraid_sas: timed out while"
4897 "waiting for HBA to recover\n");
4898 error = -ENODEV;
4899 goto out_kfree_ioc;
4900 }
4901 spin_unlock_irqrestore(&instance->hba_lock, flags);
4902
4903 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4904 up(&instance->ioctl_sem);
4905
4906 out_kfree_ioc:
4907 kfree(ioc);
4908 return error;
4909 }
4910
4911 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4912 {
4913 struct megasas_instance *instance;
4914 struct megasas_aen aen;
4915 int error;
4916 int i;
4917 unsigned long flags;
4918 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4919
4920 if (file->private_data != file) {
4921 printk(KERN_DEBUG "megasas: fasync_helper was not "
4922 "called first\n");
4923 return -EINVAL;
4924 }
4925
4926 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4927 return -EFAULT;
4928
4929 instance = megasas_lookup_instance(aen.host_no);
4930
4931 if (!instance)
4932 return -ENODEV;
4933
4934 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4935 return -ENODEV;
4936 }
4937
4938 if (instance->unload == 1) {
4939 return -ENODEV;
4940 }
4941
4942 for (i = 0; i < wait_time; i++) {
4943
4944 spin_lock_irqsave(&instance->hba_lock, flags);
4945 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4946 spin_unlock_irqrestore(&instance->hba_lock,
4947 flags);
4948 break;
4949 }
4950
4951 spin_unlock_irqrestore(&instance->hba_lock, flags);
4952
4953 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4954 printk(KERN_NOTICE "megasas: waiting for"
4955 "controller reset to finish\n");
4956 }
4957
4958 msleep(1000);
4959 }
4960
4961 spin_lock_irqsave(&instance->hba_lock, flags);
4962 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4963 spin_unlock_irqrestore(&instance->hba_lock, flags);
4964 printk(KERN_ERR "megaraid_sas: timed out while waiting"
4965 "for HBA to recover.\n");
4966 return -ENODEV;
4967 }
4968 spin_unlock_irqrestore(&instance->hba_lock, flags);
4969
4970 mutex_lock(&instance->aen_mutex);
4971 error = megasas_register_aen(instance, aen.seq_num,
4972 aen.class_locale_word);
4973 mutex_unlock(&instance->aen_mutex);
4974 return error;
4975 }
4976
4977 /**
4978 * megasas_mgmt_ioctl - char node ioctl entry point
4979 */
4980 static long
4981 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4982 {
4983 switch (cmd) {
4984 case MEGASAS_IOC_FIRMWARE:
4985 return megasas_mgmt_ioctl_fw(file, arg);
4986
4987 case MEGASAS_IOC_GET_AEN:
4988 return megasas_mgmt_ioctl_aen(file, arg);
4989 }
4990
4991 return -ENOTTY;
4992 }
4993
4994 #ifdef CONFIG_COMPAT
4995 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
4996 {
4997 struct compat_megasas_iocpacket __user *cioc =
4998 (struct compat_megasas_iocpacket __user *)arg;
4999 struct megasas_iocpacket __user *ioc =
5000 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5001 int i;
5002 int error = 0;
5003 compat_uptr_t ptr;
5004
5005 if (clear_user(ioc, sizeof(*ioc)))
5006 return -EFAULT;
5007
5008 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5009 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5010 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5011 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5012 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5013 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5014 return -EFAULT;
5015
5016 /*
5017 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5018 * sense_len is not null, so prepare the 64bit value under
5019 * the same condition.
5020 */
5021 if (ioc->sense_len) {
5022 void __user **sense_ioc_ptr =
5023 (void __user **)(ioc->frame.raw + ioc->sense_off);
5024 compat_uptr_t *sense_cioc_ptr =
5025 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5026 if (get_user(ptr, sense_cioc_ptr) ||
5027 put_user(compat_ptr(ptr), sense_ioc_ptr))
5028 return -EFAULT;
5029 }
5030
5031 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5032 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5033 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5034 copy_in_user(&ioc->sgl[i].iov_len,
5035 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5036 return -EFAULT;
5037 }
5038
5039 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5040
5041 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5042 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5043 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5044 return -EFAULT;
5045 }
5046 return error;
5047 }
5048
5049 static long
5050 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5051 unsigned long arg)
5052 {
5053 switch (cmd) {
5054 case MEGASAS_IOC_FIRMWARE32:
5055 return megasas_mgmt_compat_ioctl_fw(file, arg);
5056 case MEGASAS_IOC_GET_AEN:
5057 return megasas_mgmt_ioctl_aen(file, arg);
5058 }
5059
5060 return -ENOTTY;
5061 }
5062 #endif
5063
5064 /*
5065 * File operations structure for management interface
5066 */
5067 static const struct file_operations megasas_mgmt_fops = {
5068 .owner = THIS_MODULE,
5069 .open = megasas_mgmt_open,
5070 .fasync = megasas_mgmt_fasync,
5071 .unlocked_ioctl = megasas_mgmt_ioctl,
5072 .poll = megasas_mgmt_poll,
5073 #ifdef CONFIG_COMPAT
5074 .compat_ioctl = megasas_mgmt_compat_ioctl,
5075 #endif
5076 .llseek = noop_llseek,
5077 };
5078
5079 /*
5080 * PCI hotplug support registration structure
5081 */
5082 static struct pci_driver megasas_pci_driver = {
5083
5084 .name = "megaraid_sas",
5085 .id_table = megasas_pci_table,
5086 .probe = megasas_probe_one,
5087 .remove = __devexit_p(megasas_detach_one),
5088 .suspend = megasas_suspend,
5089 .resume = megasas_resume,
5090 .shutdown = megasas_shutdown,
5091 };
5092
5093 /*
5094 * Sysfs driver attributes
5095 */
5096 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5097 {
5098 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5099 MEGASAS_VERSION);
5100 }
5101
5102 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5103
5104 static ssize_t
5105 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5106 {
5107 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5108 MEGASAS_RELDATE);
5109 }
5110
5111 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5112 NULL);
5113
5114 static ssize_t
5115 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5116 {
5117 return sprintf(buf, "%u\n", support_poll_for_event);
5118 }
5119
5120 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5121 megasas_sysfs_show_support_poll_for_event, NULL);
5122
5123 static ssize_t
5124 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5125 {
5126 return sprintf(buf, "%u\n", support_device_change);
5127 }
5128
5129 static DRIVER_ATTR(support_device_change, S_IRUGO,
5130 megasas_sysfs_show_support_device_change, NULL);
5131
5132 static ssize_t
5133 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5134 {
5135 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5136 }
5137
5138 static ssize_t
5139 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5140 {
5141 int retval = count;
5142 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5143 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5144 retval = -EINVAL;
5145 }
5146 return retval;
5147 }
5148
5149 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5150 megasas_sysfs_set_dbg_lvl);
5151
5152 static void
5153 megasas_aen_polling(struct work_struct *work)
5154 {
5155 struct megasas_aen_event *ev =
5156 container_of(work, struct megasas_aen_event, hotplug_work);
5157 struct megasas_instance *instance = ev->instance;
5158 union megasas_evt_class_locale class_locale;
5159 struct Scsi_Host *host;
5160 struct scsi_device *sdev1;
5161 u16 pd_index = 0;
5162 u16 ld_index = 0;
5163 int i, j, doscan = 0;
5164 u32 seq_num;
5165 int error;
5166
5167 if (!instance) {
5168 printk(KERN_ERR "invalid instance!\n");
5169 kfree(ev);
5170 return;
5171 }
5172 instance->ev = NULL;
5173 host = instance->host;
5174 if (instance->evt_detail) {
5175
5176 switch (instance->evt_detail->code) {
5177 case MR_EVT_PD_INSERTED:
5178 if (megasas_get_pd_list(instance) == 0) {
5179 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5180 for (j = 0;
5181 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5182 j++) {
5183
5184 pd_index =
5185 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5186
5187 sdev1 =
5188 scsi_device_lookup(host, i, j, 0);
5189
5190 if (instance->pd_list[pd_index].driveState
5191 == MR_PD_STATE_SYSTEM) {
5192 if (!sdev1) {
5193 scsi_add_device(host, i, j, 0);
5194 }
5195
5196 if (sdev1)
5197 scsi_device_put(sdev1);
5198 }
5199 }
5200 }
5201 }
5202 doscan = 0;
5203 break;
5204
5205 case MR_EVT_PD_REMOVED:
5206 if (megasas_get_pd_list(instance) == 0) {
5207 megasas_get_pd_list(instance);
5208 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5209 for (j = 0;
5210 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5211 j++) {
5212
5213 pd_index =
5214 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5215
5216 sdev1 =
5217 scsi_device_lookup(host, i, j, 0);
5218
5219 if (instance->pd_list[pd_index].driveState
5220 == MR_PD_STATE_SYSTEM) {
5221 if (sdev1) {
5222 scsi_device_put(sdev1);
5223 }
5224 } else {
5225 if (sdev1) {
5226 scsi_remove_device(sdev1);
5227 scsi_device_put(sdev1);
5228 }
5229 }
5230 }
5231 }
5232 }
5233 doscan = 0;
5234 break;
5235
5236 case MR_EVT_LD_OFFLINE:
5237 case MR_EVT_CFG_CLEARED:
5238 case MR_EVT_LD_DELETED:
5239 megasas_get_ld_list(instance);
5240 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5241 for (j = 0;
5242 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5243 j++) {
5244
5245 ld_index =
5246 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5247
5248 sdev1 = scsi_device_lookup(host,
5249 i + MEGASAS_MAX_LD_CHANNELS,
5250 j,
5251 0);
5252
5253 if (instance->ld_ids[ld_index] != 0xff) {
5254 if (sdev1) {
5255 scsi_device_put(sdev1);
5256 }
5257 } else {
5258 if (sdev1) {
5259 scsi_remove_device(sdev1);
5260 scsi_device_put(sdev1);
5261 }
5262 }
5263 }
5264 }
5265 doscan = 0;
5266 break;
5267 case MR_EVT_LD_CREATED:
5268 megasas_get_ld_list(instance);
5269 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5270 for (j = 0;
5271 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5272 j++) {
5273 ld_index =
5274 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5275
5276 sdev1 = scsi_device_lookup(host,
5277 i+MEGASAS_MAX_LD_CHANNELS,
5278 j, 0);
5279
5280 if (instance->ld_ids[ld_index] !=
5281 0xff) {
5282 if (!sdev1) {
5283 scsi_add_device(host,
5284 i + 2,
5285 j, 0);
5286 }
5287 }
5288 if (sdev1) {
5289 scsi_device_put(sdev1);
5290 }
5291 }
5292 }
5293 doscan = 0;
5294 break;
5295 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5296 case MR_EVT_FOREIGN_CFG_IMPORTED:
5297 case MR_EVT_LD_STATE_CHANGE:
5298 doscan = 1;
5299 break;
5300 default:
5301 doscan = 0;
5302 break;
5303 }
5304 } else {
5305 printk(KERN_ERR "invalid evt_detail!\n");
5306 kfree(ev);
5307 return;
5308 }
5309
5310 if (doscan) {
5311 printk(KERN_INFO "scanning ...\n");
5312 megasas_get_pd_list(instance);
5313 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5314 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5315 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5316 sdev1 = scsi_device_lookup(host, i, j, 0);
5317 if (instance->pd_list[pd_index].driveState ==
5318 MR_PD_STATE_SYSTEM) {
5319 if (!sdev1) {
5320 scsi_add_device(host, i, j, 0);
5321 }
5322 if (sdev1)
5323 scsi_device_put(sdev1);
5324 } else {
5325 if (sdev1) {
5326 scsi_remove_device(sdev1);
5327 scsi_device_put(sdev1);
5328 }
5329 }
5330 }
5331 }
5332
5333 megasas_get_ld_list(instance);
5334 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5335 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5336 ld_index =
5337 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5338
5339 sdev1 = scsi_device_lookup(host,
5340 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5341 if (instance->ld_ids[ld_index] != 0xff) {
5342 if (!sdev1) {
5343 scsi_add_device(host,
5344 i+2,
5345 j, 0);
5346 } else {
5347 scsi_device_put(sdev1);
5348 }
5349 } else {
5350 if (sdev1) {
5351 scsi_remove_device(sdev1);
5352 scsi_device_put(sdev1);
5353 }
5354 }
5355 }
5356 }
5357 }
5358
5359 if ( instance->aen_cmd != NULL ) {
5360 kfree(ev);
5361 return ;
5362 }
5363
5364 seq_num = instance->evt_detail->seq_num + 1;
5365
5366 /* Register AEN with FW for latest sequence number plus 1 */
5367 class_locale.members.reserved = 0;
5368 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5369 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5370 mutex_lock(&instance->aen_mutex);
5371 error = megasas_register_aen(instance, seq_num,
5372 class_locale.word);
5373 mutex_unlock(&instance->aen_mutex);
5374
5375 if (error)
5376 printk(KERN_ERR "register aen failed error %x\n", error);
5377
5378 kfree(ev);
5379 }
5380
5381 /**
5382 * megasas_init - Driver load entry point
5383 */
5384 static int __init megasas_init(void)
5385 {
5386 int rval;
5387
5388 /*
5389 * Announce driver version and other information
5390 */
5391 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5392 MEGASAS_EXT_VERSION);
5393
5394 spin_lock_init(&poll_aen_lock);
5395
5396 support_poll_for_event = 2;
5397 support_device_change = 1;
5398
5399 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5400
5401 /*
5402 * Register character device node
5403 */
5404 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5405
5406 if (rval < 0) {
5407 printk(KERN_DEBUG "megasas: failed to open device node\n");
5408 return rval;
5409 }
5410
5411 megasas_mgmt_majorno = rval;
5412
5413 /*
5414 * Register ourselves as PCI hotplug module
5415 */
5416 rval = pci_register_driver(&megasas_pci_driver);
5417
5418 if (rval) {
5419 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5420 goto err_pcidrv;
5421 }
5422
5423 rval = driver_create_file(&megasas_pci_driver.driver,
5424 &driver_attr_version);
5425 if (rval)
5426 goto err_dcf_attr_ver;
5427 rval = driver_create_file(&megasas_pci_driver.driver,
5428 &driver_attr_release_date);
5429 if (rval)
5430 goto err_dcf_rel_date;
5431
5432 rval = driver_create_file(&megasas_pci_driver.driver,
5433 &driver_attr_support_poll_for_event);
5434 if (rval)
5435 goto err_dcf_support_poll_for_event;
5436
5437 rval = driver_create_file(&megasas_pci_driver.driver,
5438 &driver_attr_dbg_lvl);
5439 if (rval)
5440 goto err_dcf_dbg_lvl;
5441 rval = driver_create_file(&megasas_pci_driver.driver,
5442 &driver_attr_support_device_change);
5443 if (rval)
5444 goto err_dcf_support_device_change;
5445
5446 return rval;
5447
5448 err_dcf_support_device_change:
5449 driver_remove_file(&megasas_pci_driver.driver,
5450 &driver_attr_dbg_lvl);
5451 err_dcf_dbg_lvl:
5452 driver_remove_file(&megasas_pci_driver.driver,
5453 &driver_attr_support_poll_for_event);
5454
5455 err_dcf_support_poll_for_event:
5456 driver_remove_file(&megasas_pci_driver.driver,
5457 &driver_attr_release_date);
5458
5459 err_dcf_rel_date:
5460 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5461 err_dcf_attr_ver:
5462 pci_unregister_driver(&megasas_pci_driver);
5463 err_pcidrv:
5464 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5465 return rval;
5466 }
5467
5468 /**
5469 * megasas_exit - Driver unload entry point
5470 */
5471 static void __exit megasas_exit(void)
5472 {
5473 driver_remove_file(&megasas_pci_driver.driver,
5474 &driver_attr_dbg_lvl);
5475 driver_remove_file(&megasas_pci_driver.driver,
5476 &driver_attr_support_poll_for_event);
5477 driver_remove_file(&megasas_pci_driver.driver,
5478 &driver_attr_support_device_change);
5479 driver_remove_file(&megasas_pci_driver.driver,
5480 &driver_attr_release_date);
5481 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5482
5483 pci_unregister_driver(&megasas_pci_driver);
5484 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5485 }
5486
5487 module_init(megasas_init);
5488 module_exit(megasas_exit);
Linux kernel - Deliverables
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