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[SCSI] megaraid_sas: Fix instance access in megasas_reset_timer
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / megaraid / megaraid_sas_base.c
blob29a994f9c4f1e6a9c0973ecd3cebe413f4937c7b
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 : v00.00.06.12-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 * poll_mode_io:1- schedule complete completion from q cmd
63 */
64 static unsigned int poll_mode_io;
65 module_param_named(poll_mode_io, poll_mode_io, int, 0);
66 MODULE_PARM_DESC(poll_mode_io,
67 "Complete cmds from IO path, (default=0)");
68
69 /*
70 * Number of sectors per IO command
71 * Will be set in megasas_init_mfi if user does not provide
72 */
73 static unsigned int max_sectors;
74 module_param_named(max_sectors, max_sectors, int, 0);
75 MODULE_PARM_DESC(max_sectors,
76 "Maximum number of sectors per IO command");
77
78 static int msix_disable;
79 module_param(msix_disable, int, S_IRUGO);
80 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
81
82 MODULE_LICENSE("GPL");
83 MODULE_VERSION(MEGASAS_VERSION);
84 MODULE_AUTHOR("megaraidlinux@lsi.com");
85 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
86
87 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
88 static int megasas_get_pd_list(struct megasas_instance *instance);
89 static int megasas_issue_init_mfi(struct megasas_instance *instance);
90 static int megasas_register_aen(struct megasas_instance *instance,
91 u32 seq_num, u32 class_locale_word);
92 /*
93 * PCI ID table for all supported controllers
94 */
95 static struct pci_device_id megasas_pci_table[] = {
96
97 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
98 /* xscale IOP */
99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
100 /* ppc IOP */
101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
102 /* ppc IOP */
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
104 /* gen2*/
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
106 /* gen2*/
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
108 /* skinny*/
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
110 /* skinny*/
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
112 /* xscale IOP, vega */
113 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
114 /* xscale IOP */
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
116 /* Fusion */
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
118 /* Invader */
119 {}
120 };
121
122 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
123
124 static int megasas_mgmt_majorno;
125 static struct megasas_mgmt_info megasas_mgmt_info;
126 static struct fasync_struct *megasas_async_queue;
127 static DEFINE_MUTEX(megasas_async_queue_mutex);
128
129 static int megasas_poll_wait_aen;
130 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
131 static u32 support_poll_for_event;
132 u32 megasas_dbg_lvl;
133 static u32 support_device_change;
134
135 /* define lock for aen poll */
136 spinlock_t poll_aen_lock;
137
138 void
139 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
140 u8 alt_status);
141 static u32
142 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
143 static int
144 megasas_adp_reset_gen2(struct megasas_instance *instance,
145 struct megasas_register_set __iomem *reg_set);
146 static irqreturn_t megasas_isr(int irq, void *devp);
147 static u32
148 megasas_init_adapter_mfi(struct megasas_instance *instance);
149 u32
150 megasas_build_and_issue_cmd(struct megasas_instance *instance,
151 struct scsi_cmnd *scmd);
152 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
153 void
154 megasas_release_fusion(struct megasas_instance *instance);
155 int
156 megasas_ioc_init_fusion(struct megasas_instance *instance);
157 void
158 megasas_free_cmds_fusion(struct megasas_instance *instance);
159 u8
160 megasas_get_map_info(struct megasas_instance *instance);
161 int
162 megasas_sync_map_info(struct megasas_instance *instance);
163 int
164 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
165 void megasas_reset_reply_desc(struct megasas_instance *instance);
166 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
167 struct LD_LOAD_BALANCE_INFO *lbInfo);
168 int megasas_reset_fusion(struct Scsi_Host *shost);
169 void megasas_fusion_ocr_wq(struct work_struct *work);
170
171 void
172 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
173 {
174 instance->instancet->fire_cmd(instance,
175 cmd->frame_phys_addr, 0, instance->reg_set);
176 }
177
178 /**
179 * megasas_get_cmd - Get a command from the free pool
180 * @instance: Adapter soft state
181 *
182 * Returns a free command from the pool
183 */
184 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
185 *instance)
186 {
187 unsigned long flags;
188 struct megasas_cmd *cmd = NULL;
189
190 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
191
192 if (!list_empty(&instance->cmd_pool)) {
193 cmd = list_entry((&instance->cmd_pool)->next,
194 struct megasas_cmd, list);
195 list_del_init(&cmd->list);
196 } else {
197 printk(KERN_ERR "megasas: Command pool empty!\n");
198 }
199
200 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
201 return cmd;
202 }
203
204 /**
205 * megasas_return_cmd - Return a cmd to free command pool
206 * @instance: Adapter soft state
207 * @cmd: Command packet to be returned to free command pool
208 */
209 inline void
210 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
211 {
212 unsigned long flags;
213
214 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
215
216 cmd->scmd = NULL;
217 cmd->frame_count = 0;
218 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
219 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
220 (reset_devices))
221 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
222 list_add_tail(&cmd->list, &instance->cmd_pool);
223
224 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
225 }
226
227
228 /**
229 * The following functions are defined for xscale
230 * (deviceid : 1064R, PERC5) controllers
231 */
232
233 /**
234 * megasas_enable_intr_xscale - Enables interrupts
235 * @regs: MFI register set
236 */
237 static inline void
238 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
239 {
240 writel(0, &(regs)->outbound_intr_mask);
241
242 /* Dummy readl to force pci flush */
243 readl(&regs->outbound_intr_mask);
244 }
245
246 /**
247 * megasas_disable_intr_xscale -Disables interrupt
248 * @regs: MFI register set
249 */
250 static inline void
251 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
252 {
253 u32 mask = 0x1f;
254 writel(mask, &regs->outbound_intr_mask);
255 /* Dummy readl to force pci flush */
256 readl(&regs->outbound_intr_mask);
257 }
258
259 /**
260 * megasas_read_fw_status_reg_xscale - returns the current FW status value
261 * @regs: MFI register set
262 */
263 static u32
264 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
265 {
266 return readl(&(regs)->outbound_msg_0);
267 }
268 /**
269 * megasas_clear_interrupt_xscale - Check & clear interrupt
270 * @regs: MFI register set
271 */
272 static int
273 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
274 {
275 u32 status;
276 u32 mfiStatus = 0;
277 /*
278 * Check if it is our interrupt
279 */
280 status = readl(&regs->outbound_intr_status);
281
282 if (status & MFI_OB_INTR_STATUS_MASK)
283 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
284 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
285 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
286
287 /*
288 * Clear the interrupt by writing back the same value
289 */
290 if (mfiStatus)
291 writel(status, &regs->outbound_intr_status);
292
293 /* Dummy readl to force pci flush */
294 readl(&regs->outbound_intr_status);
295
296 return mfiStatus;
297 }
298
299 /**
300 * megasas_fire_cmd_xscale - Sends command to the FW
301 * @frame_phys_addr : Physical address of cmd
302 * @frame_count : Number of frames for the command
303 * @regs : MFI register set
304 */
305 static inline void
306 megasas_fire_cmd_xscale(struct megasas_instance *instance,
307 dma_addr_t frame_phys_addr,
308 u32 frame_count,
309 struct megasas_register_set __iomem *regs)
310 {
311 unsigned long flags;
312 spin_lock_irqsave(&instance->hba_lock, flags);
313 writel((frame_phys_addr >> 3)|(frame_count),
314 &(regs)->inbound_queue_port);
315 spin_unlock_irqrestore(&instance->hba_lock, flags);
316 }
317
318 /**
319 * megasas_adp_reset_xscale - For controller reset
320 * @regs: MFI register set
321 */
322 static int
323 megasas_adp_reset_xscale(struct megasas_instance *instance,
324 struct megasas_register_set __iomem *regs)
325 {
326 u32 i;
327 u32 pcidata;
328 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
329
330 for (i = 0; i < 3; i++)
331 msleep(1000); /* sleep for 3 secs */
332 pcidata = 0;
333 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
334 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
335 if (pcidata & 0x2) {
336 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
337 pcidata &= ~0x2;
338 pci_write_config_dword(instance->pdev,
339 MFI_1068_PCSR_OFFSET, pcidata);
340
341 for (i = 0; i < 2; i++)
342 msleep(1000); /* need to wait 2 secs again */
343
344 pcidata = 0;
345 pci_read_config_dword(instance->pdev,
346 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
347 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
348 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
349 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
350 pcidata = 0;
351 pci_write_config_dword(instance->pdev,
352 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
353 }
354 }
355 return 0;
356 }
357
358 /**
359 * megasas_check_reset_xscale - For controller reset check
360 * @regs: MFI register set
361 */
362 static int
363 megasas_check_reset_xscale(struct megasas_instance *instance,
364 struct megasas_register_set __iomem *regs)
365 {
366 u32 consumer;
367 consumer = *instance->consumer;
368
369 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
370 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
371 return 1;
372 }
373 return 0;
374 }
375
376 static struct megasas_instance_template megasas_instance_template_xscale = {
377
378 .fire_cmd = megasas_fire_cmd_xscale,
379 .enable_intr = megasas_enable_intr_xscale,
380 .disable_intr = megasas_disable_intr_xscale,
381 .clear_intr = megasas_clear_intr_xscale,
382 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
383 .adp_reset = megasas_adp_reset_xscale,
384 .check_reset = megasas_check_reset_xscale,
385 .service_isr = megasas_isr,
386 .tasklet = megasas_complete_cmd_dpc,
387 .init_adapter = megasas_init_adapter_mfi,
388 .build_and_issue_cmd = megasas_build_and_issue_cmd,
389 .issue_dcmd = megasas_issue_dcmd,
390 };
391
392 /**
393 * This is the end of set of functions & definitions specific
394 * to xscale (deviceid : 1064R, PERC5) controllers
395 */
396
397 /**
398 * The following functions are defined for ppc (deviceid : 0x60)
399 * controllers
400 */
401
402 /**
403 * megasas_enable_intr_ppc - Enables interrupts
404 * @regs: MFI register set
405 */
406 static inline void
407 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
408 {
409 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
410
411 writel(~0x80000000, &(regs)->outbound_intr_mask);
412
413 /* Dummy readl to force pci flush */
414 readl(&regs->outbound_intr_mask);
415 }
416
417 /**
418 * megasas_disable_intr_ppc - Disable interrupt
419 * @regs: MFI register set
420 */
421 static inline void
422 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
423 {
424 u32 mask = 0xFFFFFFFF;
425 writel(mask, &regs->outbound_intr_mask);
426 /* Dummy readl to force pci flush */
427 readl(&regs->outbound_intr_mask);
428 }
429
430 /**
431 * megasas_read_fw_status_reg_ppc - returns the current FW status value
432 * @regs: MFI register set
433 */
434 static u32
435 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
436 {
437 return readl(&(regs)->outbound_scratch_pad);
438 }
439
440 /**
441 * megasas_clear_interrupt_ppc - Check & clear interrupt
442 * @regs: MFI register set
443 */
444 static int
445 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
446 {
447 u32 status, mfiStatus = 0;
448
449 /*
450 * Check if it is our interrupt
451 */
452 status = readl(&regs->outbound_intr_status);
453
454 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
455 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
456
457 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
458 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
459
460 /*
461 * Clear the interrupt by writing back the same value
462 */
463 writel(status, &regs->outbound_doorbell_clear);
464
465 /* Dummy readl to force pci flush */
466 readl(&regs->outbound_doorbell_clear);
467
468 return mfiStatus;
469 }
470
471 /**
472 * megasas_fire_cmd_ppc - Sends command to the FW
473 * @frame_phys_addr : Physical address of cmd
474 * @frame_count : Number of frames for the command
475 * @regs : MFI register set
476 */
477 static inline void
478 megasas_fire_cmd_ppc(struct megasas_instance *instance,
479 dma_addr_t frame_phys_addr,
480 u32 frame_count,
481 struct megasas_register_set __iomem *regs)
482 {
483 unsigned long flags;
484 spin_lock_irqsave(&instance->hba_lock, flags);
485 writel((frame_phys_addr | (frame_count<<1))|1,
486 &(regs)->inbound_queue_port);
487 spin_unlock_irqrestore(&instance->hba_lock, flags);
488 }
489
490 /**
491 * megasas_check_reset_ppc - For controller reset check
492 * @regs: MFI register set
493 */
494 static int
495 megasas_check_reset_ppc(struct megasas_instance *instance,
496 struct megasas_register_set __iomem *regs)
497 {
498 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
499 return 1;
500
501 return 0;
502 }
503
504 static struct megasas_instance_template megasas_instance_template_ppc = {
505
506 .fire_cmd = megasas_fire_cmd_ppc,
507 .enable_intr = megasas_enable_intr_ppc,
508 .disable_intr = megasas_disable_intr_ppc,
509 .clear_intr = megasas_clear_intr_ppc,
510 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
511 .adp_reset = megasas_adp_reset_xscale,
512 .check_reset = megasas_check_reset_ppc,
513 .service_isr = megasas_isr,
514 .tasklet = megasas_complete_cmd_dpc,
515 .init_adapter = megasas_init_adapter_mfi,
516 .build_and_issue_cmd = megasas_build_and_issue_cmd,
517 .issue_dcmd = megasas_issue_dcmd,
518 };
519
520 /**
521 * megasas_enable_intr_skinny - Enables interrupts
522 * @regs: MFI register set
523 */
524 static inline void
525 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
526 {
527 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
528
529 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
530
531 /* Dummy readl to force pci flush */
532 readl(&regs->outbound_intr_mask);
533 }
534
535 /**
536 * megasas_disable_intr_skinny - Disables interrupt
537 * @regs: MFI register set
538 */
539 static inline void
540 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
541 {
542 u32 mask = 0xFFFFFFFF;
543 writel(mask, &regs->outbound_intr_mask);
544 /* Dummy readl to force pci flush */
545 readl(&regs->outbound_intr_mask);
546 }
547
548 /**
549 * megasas_read_fw_status_reg_skinny - returns the current FW status value
550 * @regs: MFI register set
551 */
552 static u32
553 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
554 {
555 return readl(&(regs)->outbound_scratch_pad);
556 }
557
558 /**
559 * megasas_clear_interrupt_skinny - Check & clear interrupt
560 * @regs: MFI register set
561 */
562 static int
563 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
564 {
565 u32 status;
566 u32 mfiStatus = 0;
567
568 /*
569 * Check if it is our interrupt
570 */
571 status = readl(&regs->outbound_intr_status);
572
573 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
574 return 0;
575 }
576
577 /*
578 * Check if it is our interrupt
579 */
580 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) ==
581 MFI_STATE_FAULT) {
582 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
583 } else
584 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
585
586 /*
587 * Clear the interrupt by writing back the same value
588 */
589 writel(status, &regs->outbound_intr_status);
590
591 /*
592 * dummy read to flush PCI
593 */
594 readl(&regs->outbound_intr_status);
595
596 return mfiStatus;
597 }
598
599 /**
600 * megasas_fire_cmd_skinny - Sends command to the FW
601 * @frame_phys_addr : Physical address of cmd
602 * @frame_count : Number of frames for the command
603 * @regs : MFI register set
604 */
605 static inline void
606 megasas_fire_cmd_skinny(struct megasas_instance *instance,
607 dma_addr_t frame_phys_addr,
608 u32 frame_count,
609 struct megasas_register_set __iomem *regs)
610 {
611 unsigned long flags;
612 spin_lock_irqsave(&instance->hba_lock, flags);
613 writel(0, &(regs)->inbound_high_queue_port);
614 writel((frame_phys_addr | (frame_count<<1))|1,
615 &(regs)->inbound_low_queue_port);
616 spin_unlock_irqrestore(&instance->hba_lock, flags);
617 }
618
619 /**
620 * megasas_check_reset_skinny - For controller reset check
621 * @regs: MFI register set
622 */
623 static int
624 megasas_check_reset_skinny(struct megasas_instance *instance,
625 struct megasas_register_set __iomem *regs)
626 {
627 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
628 return 1;
629
630 return 0;
631 }
632
633 static struct megasas_instance_template megasas_instance_template_skinny = {
634
635 .fire_cmd = megasas_fire_cmd_skinny,
636 .enable_intr = megasas_enable_intr_skinny,
637 .disable_intr = megasas_disable_intr_skinny,
638 .clear_intr = megasas_clear_intr_skinny,
639 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
640 .adp_reset = megasas_adp_reset_gen2,
641 .check_reset = megasas_check_reset_skinny,
642 .service_isr = megasas_isr,
643 .tasklet = megasas_complete_cmd_dpc,
644 .init_adapter = megasas_init_adapter_mfi,
645 .build_and_issue_cmd = megasas_build_and_issue_cmd,
646 .issue_dcmd = megasas_issue_dcmd,
647 };
648
649
650 /**
651 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
652 * controllers
653 */
654
655 /**
656 * megasas_enable_intr_gen2 - Enables interrupts
657 * @regs: MFI register set
658 */
659 static inline void
660 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
661 {
662 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
663
664 /* write ~0x00000005 (4 & 1) to the intr mask*/
665 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
666
667 /* Dummy readl to force pci flush */
668 readl(&regs->outbound_intr_mask);
669 }
670
671 /**
672 * megasas_disable_intr_gen2 - Disables interrupt
673 * @regs: MFI register set
674 */
675 static inline void
676 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
677 {
678 u32 mask = 0xFFFFFFFF;
679 writel(mask, &regs->outbound_intr_mask);
680 /* Dummy readl to force pci flush */
681 readl(&regs->outbound_intr_mask);
682 }
683
684 /**
685 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
686 * @regs: MFI register set
687 */
688 static u32
689 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
690 {
691 return readl(&(regs)->outbound_scratch_pad);
692 }
693
694 /**
695 * megasas_clear_interrupt_gen2 - Check & clear interrupt
696 * @regs: MFI register set
697 */
698 static int
699 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
700 {
701 u32 status;
702 u32 mfiStatus = 0;
703 /*
704 * Check if it is our interrupt
705 */
706 status = readl(&regs->outbound_intr_status);
707
708 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
709 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
710 }
711 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
712 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
713 }
714
715 /*
716 * Clear the interrupt by writing back the same value
717 */
718 if (mfiStatus)
719 writel(status, &regs->outbound_doorbell_clear);
720
721 /* Dummy readl to force pci flush */
722 readl(&regs->outbound_intr_status);
723
724 return mfiStatus;
725 }
726 /**
727 * megasas_fire_cmd_gen2 - Sends command to the FW
728 * @frame_phys_addr : Physical address of cmd
729 * @frame_count : Number of frames for the command
730 * @regs : MFI register set
731 */
732 static inline void
733 megasas_fire_cmd_gen2(struct megasas_instance *instance,
734 dma_addr_t frame_phys_addr,
735 u32 frame_count,
736 struct megasas_register_set __iomem *regs)
737 {
738 unsigned long flags;
739 spin_lock_irqsave(&instance->hba_lock, flags);
740 writel((frame_phys_addr | (frame_count<<1))|1,
741 &(regs)->inbound_queue_port);
742 spin_unlock_irqrestore(&instance->hba_lock, flags);
743 }
744
745 /**
746 * megasas_adp_reset_gen2 - For controller reset
747 * @regs: MFI register set
748 */
749 static int
750 megasas_adp_reset_gen2(struct megasas_instance *instance,
751 struct megasas_register_set __iomem *reg_set)
752 {
753 u32 retry = 0 ;
754 u32 HostDiag;
755 u32 *seq_offset = &reg_set->seq_offset;
756 u32 *hostdiag_offset = &reg_set->host_diag;
757
758 if (instance->instancet == &megasas_instance_template_skinny) {
759 seq_offset = &reg_set->fusion_seq_offset;
760 hostdiag_offset = &reg_set->fusion_host_diag;
761 }
762
763 writel(0, seq_offset);
764 writel(4, seq_offset);
765 writel(0xb, seq_offset);
766 writel(2, seq_offset);
767 writel(7, seq_offset);
768 writel(0xd, seq_offset);
769
770 msleep(1000);
771
772 HostDiag = (u32)readl(hostdiag_offset);
773
774 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
775 msleep(100);
776 HostDiag = (u32)readl(hostdiag_offset);
777 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
778 retry, HostDiag);
779
780 if (retry++ >= 100)
781 return 1;
782
783 }
784
785 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
786
787 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
788
789 ssleep(10);
790
791 HostDiag = (u32)readl(hostdiag_offset);
792 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
793 msleep(100);
794 HostDiag = (u32)readl(hostdiag_offset);
795 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
796 retry, HostDiag);
797
798 if (retry++ >= 1000)
799 return 1;
800
801 }
802 return 0;
803 }
804
805 /**
806 * megasas_check_reset_gen2 - For controller reset check
807 * @regs: MFI register set
808 */
809 static int
810 megasas_check_reset_gen2(struct megasas_instance *instance,
811 struct megasas_register_set __iomem *regs)
812 {
813 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
814 return 1;
815 }
816
817 return 0;
818 }
819
820 static struct megasas_instance_template megasas_instance_template_gen2 = {
821
822 .fire_cmd = megasas_fire_cmd_gen2,
823 .enable_intr = megasas_enable_intr_gen2,
824 .disable_intr = megasas_disable_intr_gen2,
825 .clear_intr = megasas_clear_intr_gen2,
826 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
827 .adp_reset = megasas_adp_reset_gen2,
828 .check_reset = megasas_check_reset_gen2,
829 .service_isr = megasas_isr,
830 .tasklet = megasas_complete_cmd_dpc,
831 .init_adapter = megasas_init_adapter_mfi,
832 .build_and_issue_cmd = megasas_build_and_issue_cmd,
833 .issue_dcmd = megasas_issue_dcmd,
834 };
835
836 /**
837 * This is the end of set of functions & definitions
838 * specific to gen2 (deviceid : 0x78, 0x79) controllers
839 */
840
841 /*
842 * Template added for TB (Fusion)
843 */
844 extern struct megasas_instance_template megasas_instance_template_fusion;
845
846 /**
847 * megasas_issue_polled - Issues a polling command
848 * @instance: Adapter soft state
849 * @cmd: Command packet to be issued
850 *
851 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
852 */
853 int
854 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
855 {
856
857 struct megasas_header *frame_hdr = &cmd->frame->hdr;
858
859 frame_hdr->cmd_status = 0xFF;
860 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
861
862 /*
863 * Issue the frame using inbound queue port
864 */
865 instance->instancet->issue_dcmd(instance, cmd);
866
867 /*
868 * Wait for cmd_status to change
869 */
870 return wait_and_poll(instance, cmd);
871 }
872
873 /**
874 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
875 * @instance: Adapter soft state
876 * @cmd: Command to be issued
877 *
878 * This function waits on an event for the command to be returned from ISR.
879 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
880 * Used to issue ioctl commands.
881 */
882 static int
883 megasas_issue_blocked_cmd(struct megasas_instance *instance,
884 struct megasas_cmd *cmd)
885 {
886 cmd->cmd_status = ENODATA;
887
888 instance->instancet->issue_dcmd(instance, cmd);
889
890 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
891
892 return 0;
893 }
894
895 /**
896 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
897 * @instance: Adapter soft state
898 * @cmd_to_abort: Previously issued cmd to be aborted
899 *
900 * MFI firmware can abort previously issued AEN command (automatic event
901 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
902 * cmd and waits for return status.
903 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
904 */
905 static int
906 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
907 struct megasas_cmd *cmd_to_abort)
908 {
909 struct megasas_cmd *cmd;
910 struct megasas_abort_frame *abort_fr;
911
912 cmd = megasas_get_cmd(instance);
913
914 if (!cmd)
915 return -1;
916
917 abort_fr = &cmd->frame->abort;
918
919 /*
920 * Prepare and issue the abort frame
921 */
922 abort_fr->cmd = MFI_CMD_ABORT;
923 abort_fr->cmd_status = 0xFF;
924 abort_fr->flags = 0;
925 abort_fr->abort_context = cmd_to_abort->index;
926 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
927 abort_fr->abort_mfi_phys_addr_hi = 0;
928
929 cmd->sync_cmd = 1;
930 cmd->cmd_status = 0xFF;
931
932 instance->instancet->issue_dcmd(instance, cmd);
933
934 /*
935 * Wait for this cmd to complete
936 */
937 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
938 cmd->sync_cmd = 0;
939
940 megasas_return_cmd(instance, cmd);
941 return 0;
942 }
943
944 /**
945 * megasas_make_sgl32 - Prepares 32-bit SGL
946 * @instance: Adapter soft state
947 * @scp: SCSI command from the mid-layer
948 * @mfi_sgl: SGL to be filled in
949 *
950 * If successful, this function returns the number of SG elements. Otherwise,
951 * it returnes -1.
952 */
953 static int
954 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
955 union megasas_sgl *mfi_sgl)
956 {
957 int i;
958 int sge_count;
959 struct scatterlist *os_sgl;
960
961 sge_count = scsi_dma_map(scp);
962 BUG_ON(sge_count < 0);
963
964 if (sge_count) {
965 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
966 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
967 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
968 }
969 }
970 return sge_count;
971 }
972
973 /**
974 * megasas_make_sgl64 - Prepares 64-bit SGL
975 * @instance: Adapter soft state
976 * @scp: SCSI command from the mid-layer
977 * @mfi_sgl: SGL to be filled in
978 *
979 * If successful, this function returns the number of SG elements. Otherwise,
980 * it returnes -1.
981 */
982 static int
983 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
984 union megasas_sgl *mfi_sgl)
985 {
986 int i;
987 int sge_count;
988 struct scatterlist *os_sgl;
989
990 sge_count = scsi_dma_map(scp);
991 BUG_ON(sge_count < 0);
992
993 if (sge_count) {
994 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
995 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
996 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
997 }
998 }
999 return sge_count;
1000 }
1001
1002 /**
1003 * megasas_make_sgl_skinny - Prepares IEEE SGL
1004 * @instance: Adapter soft state
1005 * @scp: SCSI command from the mid-layer
1006 * @mfi_sgl: SGL to be filled in
1007 *
1008 * If successful, this function returns the number of SG elements. Otherwise,
1009 * it returnes -1.
1010 */
1011 static int
1012 megasas_make_sgl_skinny(struct megasas_instance *instance,
1013 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1014 {
1015 int i;
1016 int sge_count;
1017 struct scatterlist *os_sgl;
1018
1019 sge_count = scsi_dma_map(scp);
1020
1021 if (sge_count) {
1022 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1023 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1024 mfi_sgl->sge_skinny[i].phys_addr =
1025 sg_dma_address(os_sgl);
1026 mfi_sgl->sge_skinny[i].flag = 0;
1027 }
1028 }
1029 return sge_count;
1030 }
1031
1032 /**
1033 * megasas_get_frame_count - Computes the number of frames
1034 * @frame_type : type of frame- io or pthru frame
1035 * @sge_count : number of sg elements
1036 *
1037 * Returns the number of frames required for numnber of sge's (sge_count)
1038 */
1039
1040 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1041 u8 sge_count, u8 frame_type)
1042 {
1043 int num_cnt;
1044 int sge_bytes;
1045 u32 sge_sz;
1046 u32 frame_count=0;
1047
1048 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1049 sizeof(struct megasas_sge32);
1050
1051 if (instance->flag_ieee) {
1052 sge_sz = sizeof(struct megasas_sge_skinny);
1053 }
1054
1055 /*
1056 * Main frame can contain 2 SGEs for 64-bit SGLs and
1057 * 3 SGEs for 32-bit SGLs for ldio &
1058 * 1 SGEs for 64-bit SGLs and
1059 * 2 SGEs for 32-bit SGLs for pthru frame
1060 */
1061 if (unlikely(frame_type == PTHRU_FRAME)) {
1062 if (instance->flag_ieee == 1) {
1063 num_cnt = sge_count - 1;
1064 } else if (IS_DMA64)
1065 num_cnt = sge_count - 1;
1066 else
1067 num_cnt = sge_count - 2;
1068 } else {
1069 if (instance->flag_ieee == 1) {
1070 num_cnt = sge_count - 1;
1071 } else if (IS_DMA64)
1072 num_cnt = sge_count - 2;
1073 else
1074 num_cnt = sge_count - 3;
1075 }
1076
1077 if(num_cnt>0){
1078 sge_bytes = sge_sz * num_cnt;
1079
1080 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1081 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1082 }
1083 /* Main frame */
1084 frame_count +=1;
1085
1086 if (frame_count > 7)
1087 frame_count = 8;
1088 return frame_count;
1089 }
1090
1091 /**
1092 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1093 * @instance: Adapter soft state
1094 * @scp: SCSI command
1095 * @cmd: Command to be prepared in
1096 *
1097 * This function prepares CDB commands. These are typcially pass-through
1098 * commands to the devices.
1099 */
1100 static int
1101 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1102 struct megasas_cmd *cmd)
1103 {
1104 u32 is_logical;
1105 u32 device_id;
1106 u16 flags = 0;
1107 struct megasas_pthru_frame *pthru;
1108
1109 is_logical = MEGASAS_IS_LOGICAL(scp);
1110 device_id = MEGASAS_DEV_INDEX(instance, scp);
1111 pthru = (struct megasas_pthru_frame *)cmd->frame;
1112
1113 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1114 flags = MFI_FRAME_DIR_WRITE;
1115 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1116 flags = MFI_FRAME_DIR_READ;
1117 else if (scp->sc_data_direction == PCI_DMA_NONE)
1118 flags = MFI_FRAME_DIR_NONE;
1119
1120 if (instance->flag_ieee == 1) {
1121 flags |= MFI_FRAME_IEEE;
1122 }
1123
1124 /*
1125 * Prepare the DCDB frame
1126 */
1127 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1128 pthru->cmd_status = 0x0;
1129 pthru->scsi_status = 0x0;
1130 pthru->target_id = device_id;
1131 pthru->lun = scp->device->lun;
1132 pthru->cdb_len = scp->cmd_len;
1133 pthru->timeout = 0;
1134 pthru->pad_0 = 0;
1135 pthru->flags = flags;
1136 pthru->data_xfer_len = scsi_bufflen(scp);
1137
1138 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1139
1140 /*
1141 * If the command is for the tape device, set the
1142 * pthru timeout to the os layer timeout value.
1143 */
1144 if (scp->device->type == TYPE_TAPE) {
1145 if ((scp->request->timeout / HZ) > 0xFFFF)
1146 pthru->timeout = 0xFFFF;
1147 else
1148 pthru->timeout = scp->request->timeout / HZ;
1149 }
1150
1151 /*
1152 * Construct SGL
1153 */
1154 if (instance->flag_ieee == 1) {
1155 pthru->flags |= MFI_FRAME_SGL64;
1156 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1157 &pthru->sgl);
1158 } else if (IS_DMA64) {
1159 pthru->flags |= MFI_FRAME_SGL64;
1160 pthru->sge_count = megasas_make_sgl64(instance, scp,
1161 &pthru->sgl);
1162 } else
1163 pthru->sge_count = megasas_make_sgl32(instance, scp,
1164 &pthru->sgl);
1165
1166 if (pthru->sge_count > instance->max_num_sge) {
1167 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1168 pthru->sge_count);
1169 return 0;
1170 }
1171
1172 /*
1173 * Sense info specific
1174 */
1175 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1176 pthru->sense_buf_phys_addr_hi = 0;
1177 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1178
1179 /*
1180 * Compute the total number of frames this command consumes. FW uses
1181 * this number to pull sufficient number of frames from host memory.
1182 */
1183 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1184 PTHRU_FRAME);
1185
1186 return cmd->frame_count;
1187 }
1188
1189 /**
1190 * megasas_build_ldio - Prepares IOs to logical devices
1191 * @instance: Adapter soft state
1192 * @scp: SCSI command
1193 * @cmd: Command to be prepared
1194 *
1195 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1196 */
1197 static int
1198 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1199 struct megasas_cmd *cmd)
1200 {
1201 u32 device_id;
1202 u8 sc = scp->cmnd[0];
1203 u16 flags = 0;
1204 struct megasas_io_frame *ldio;
1205
1206 device_id = MEGASAS_DEV_INDEX(instance, scp);
1207 ldio = (struct megasas_io_frame *)cmd->frame;
1208
1209 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1210 flags = MFI_FRAME_DIR_WRITE;
1211 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1212 flags = MFI_FRAME_DIR_READ;
1213
1214 if (instance->flag_ieee == 1) {
1215 flags |= MFI_FRAME_IEEE;
1216 }
1217
1218 /*
1219 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1220 */
1221 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1222 ldio->cmd_status = 0x0;
1223 ldio->scsi_status = 0x0;
1224 ldio->target_id = device_id;
1225 ldio->timeout = 0;
1226 ldio->reserved_0 = 0;
1227 ldio->pad_0 = 0;
1228 ldio->flags = flags;
1229 ldio->start_lba_hi = 0;
1230 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1231
1232 /*
1233 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1234 */
1235 if (scp->cmd_len == 6) {
1236 ldio->lba_count = (u32) scp->cmnd[4];
1237 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1238 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1239
1240 ldio->start_lba_lo &= 0x1FFFFF;
1241 }
1242
1243 /*
1244 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1245 */
1246 else if (scp->cmd_len == 10) {
1247 ldio->lba_count = (u32) scp->cmnd[8] |
1248 ((u32) scp->cmnd[7] << 8);
1249 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1250 ((u32) scp->cmnd[3] << 16) |
1251 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1252 }
1253
1254 /*
1255 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1256 */
1257 else if (scp->cmd_len == 12) {
1258 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1259 ((u32) scp->cmnd[7] << 16) |
1260 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1261
1262 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1263 ((u32) scp->cmnd[3] << 16) |
1264 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1265 }
1266
1267 /*
1268 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1269 */
1270 else if (scp->cmd_len == 16) {
1271 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1272 ((u32) scp->cmnd[11] << 16) |
1273 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1274
1275 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1276 ((u32) scp->cmnd[7] << 16) |
1277 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1278
1279 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1280 ((u32) scp->cmnd[3] << 16) |
1281 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1282
1283 }
1284
1285 /*
1286 * Construct SGL
1287 */
1288 if (instance->flag_ieee) {
1289 ldio->flags |= MFI_FRAME_SGL64;
1290 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1291 &ldio->sgl);
1292 } else if (IS_DMA64) {
1293 ldio->flags |= MFI_FRAME_SGL64;
1294 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1295 } else
1296 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1297
1298 if (ldio->sge_count > instance->max_num_sge) {
1299 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1300 ldio->sge_count);
1301 return 0;
1302 }
1303
1304 /*
1305 * Sense info specific
1306 */
1307 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1308 ldio->sense_buf_phys_addr_hi = 0;
1309 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1310
1311 /*
1312 * Compute the total number of frames this command consumes. FW uses
1313 * this number to pull sufficient number of frames from host memory.
1314 */
1315 cmd->frame_count = megasas_get_frame_count(instance,
1316 ldio->sge_count, IO_FRAME);
1317
1318 return cmd->frame_count;
1319 }
1320
1321 /**
1322 * megasas_is_ldio - Checks if the cmd is for logical drive
1323 * @scmd: SCSI command
1324 *
1325 * Called by megasas_queue_command to find out if the command to be queued
1326 * is a logical drive command
1327 */
1328 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1329 {
1330 if (!MEGASAS_IS_LOGICAL(cmd))
1331 return 0;
1332 switch (cmd->cmnd[0]) {
1333 case READ_10:
1334 case WRITE_10:
1335 case READ_12:
1336 case WRITE_12:
1337 case READ_6:
1338 case WRITE_6:
1339 case READ_16:
1340 case WRITE_16:
1341 return 1;
1342 default:
1343 return 0;
1344 }
1345 }
1346
1347 /**
1348 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1349 * in FW
1350 * @instance: Adapter soft state
1351 */
1352 static inline void
1353 megasas_dump_pending_frames(struct megasas_instance *instance)
1354 {
1355 struct megasas_cmd *cmd;
1356 int i,n;
1357 union megasas_sgl *mfi_sgl;
1358 struct megasas_io_frame *ldio;
1359 struct megasas_pthru_frame *pthru;
1360 u32 sgcount;
1361 u32 max_cmd = instance->max_fw_cmds;
1362
1363 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1364 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1365 if (IS_DMA64)
1366 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1367 else
1368 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1369
1370 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1371 for (i = 0; i < max_cmd; i++) {
1372 cmd = instance->cmd_list[i];
1373 if(!cmd->scmd)
1374 continue;
1375 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1376 if (megasas_is_ldio(cmd->scmd)){
1377 ldio = (struct megasas_io_frame *)cmd->frame;
1378 mfi_sgl = &ldio->sgl;
1379 sgcount = ldio->sge_count;
1380 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);
1381 }
1382 else {
1383 pthru = (struct megasas_pthru_frame *) cmd->frame;
1384 mfi_sgl = &pthru->sgl;
1385 sgcount = pthru->sge_count;
1386 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);
1387 }
1388 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1389 for (n = 0; n < sgcount; n++){
1390 if (IS_DMA64)
1391 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) ;
1392 else
1393 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1394 }
1395 }
1396 printk(KERN_ERR "\n");
1397 } /*for max_cmd*/
1398 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1399 for (i = 0; i < max_cmd; i++) {
1400
1401 cmd = instance->cmd_list[i];
1402
1403 if(cmd->sync_cmd == 1){
1404 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1405 }
1406 }
1407 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1408 }
1409
1410 u32
1411 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1412 struct scsi_cmnd *scmd)
1413 {
1414 struct megasas_cmd *cmd;
1415 u32 frame_count;
1416
1417 cmd = megasas_get_cmd(instance);
1418 if (!cmd)
1419 return SCSI_MLQUEUE_HOST_BUSY;
1420
1421 /*
1422 * Logical drive command
1423 */
1424 if (megasas_is_ldio(scmd))
1425 frame_count = megasas_build_ldio(instance, scmd, cmd);
1426 else
1427 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1428
1429 if (!frame_count)
1430 goto out_return_cmd;
1431
1432 cmd->scmd = scmd;
1433 scmd->SCp.ptr = (char *)cmd;
1434
1435 /*
1436 * Issue the command to the FW
1437 */
1438 atomic_inc(&instance->fw_outstanding);
1439
1440 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1441 cmd->frame_count-1, instance->reg_set);
1442 /*
1443 * Check if we have pend cmds to be completed
1444 */
1445 if (poll_mode_io && atomic_read(&instance->fw_outstanding))
1446 tasklet_schedule(&instance->isr_tasklet);
1447
1448 return 0;
1449 out_return_cmd:
1450 megasas_return_cmd(instance, cmd);
1451 return 1;
1452 }
1453
1454
1455 /**
1456 * megasas_queue_command - Queue entry point
1457 * @scmd: SCSI command to be queued
1458 * @done: Callback entry point
1459 */
1460 static int
1461 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1462 {
1463 struct megasas_instance *instance;
1464 unsigned long flags;
1465
1466 instance = (struct megasas_instance *)
1467 scmd->device->host->hostdata;
1468
1469 if (instance->issuepend_done == 0)
1470 return SCSI_MLQUEUE_HOST_BUSY;
1471
1472 spin_lock_irqsave(&instance->hba_lock, flags);
1473 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1474 spin_unlock_irqrestore(&instance->hba_lock, flags);
1475 return SCSI_MLQUEUE_HOST_BUSY;
1476 }
1477
1478 spin_unlock_irqrestore(&instance->hba_lock, flags);
1479
1480 scmd->scsi_done = done;
1481 scmd->result = 0;
1482
1483 if (MEGASAS_IS_LOGICAL(scmd) &&
1484 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1485 scmd->result = DID_BAD_TARGET << 16;
1486 goto out_done;
1487 }
1488
1489 switch (scmd->cmnd[0]) {
1490 case SYNCHRONIZE_CACHE:
1491 /*
1492 * FW takes care of flush cache on its own
1493 * No need to send it down
1494 */
1495 scmd->result = DID_OK << 16;
1496 goto out_done;
1497 default:
1498 break;
1499 }
1500
1501 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1502 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1503 return SCSI_MLQUEUE_HOST_BUSY;
1504 }
1505
1506 return 0;
1507
1508 out_done:
1509 done(scmd);
1510 return 0;
1511 }
1512
1513 static DEF_SCSI_QCMD(megasas_queue_command)
1514
1515 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1516 {
1517 int i;
1518
1519 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1520
1521 if ((megasas_mgmt_info.instance[i]) &&
1522 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1523 return megasas_mgmt_info.instance[i];
1524 }
1525
1526 return NULL;
1527 }
1528
1529 static int megasas_slave_configure(struct scsi_device *sdev)
1530 {
1531 u16 pd_index = 0;
1532 struct megasas_instance *instance ;
1533
1534 instance = megasas_lookup_instance(sdev->host->host_no);
1535
1536 /*
1537 * Don't export physical disk devices to the disk driver.
1538 *
1539 * FIXME: Currently we don't export them to the midlayer at all.
1540 * That will be fixed once LSI engineers have audited the
1541 * firmware for possible issues.
1542 */
1543 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1544 sdev->type == TYPE_DISK) {
1545 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1546 sdev->id;
1547 if (instance->pd_list[pd_index].driveState ==
1548 MR_PD_STATE_SYSTEM) {
1549 blk_queue_rq_timeout(sdev->request_queue,
1550 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1551 return 0;
1552 }
1553 return -ENXIO;
1554 }
1555
1556 /*
1557 * The RAID firmware may require extended timeouts.
1558 */
1559 blk_queue_rq_timeout(sdev->request_queue,
1560 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1561 return 0;
1562 }
1563
1564 static int megasas_slave_alloc(struct scsi_device *sdev)
1565 {
1566 u16 pd_index = 0;
1567 struct megasas_instance *instance ;
1568 instance = megasas_lookup_instance(sdev->host->host_no);
1569 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1570 (sdev->type == TYPE_DISK)) {
1571 /*
1572 * Open the OS scan to the SYSTEM PD
1573 */
1574 pd_index =
1575 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1576 sdev->id;
1577 if ((instance->pd_list[pd_index].driveState ==
1578 MR_PD_STATE_SYSTEM) &&
1579 (instance->pd_list[pd_index].driveType ==
1580 TYPE_DISK)) {
1581 return 0;
1582 }
1583 return -ENXIO;
1584 }
1585 return 0;
1586 }
1587
1588 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1589 {
1590 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1591 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1592 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1593 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
1594 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1595 } else {
1596 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1597 }
1598 }
1599
1600 /**
1601 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1602 * restored to max value
1603 * @instance: Adapter soft state
1604 *
1605 */
1606 void
1607 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1608 {
1609 unsigned long flags;
1610 if (instance->flag & MEGASAS_FW_BUSY
1611 && time_after(jiffies, instance->last_time + 5 * HZ)
1612 && atomic_read(&instance->fw_outstanding) < 17) {
1613
1614 spin_lock_irqsave(instance->host->host_lock, flags);
1615 instance->flag &= ~MEGASAS_FW_BUSY;
1616 if ((instance->pdev->device ==
1617 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1618 (instance->pdev->device ==
1619 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1620 instance->host->can_queue =
1621 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1622 } else
1623 instance->host->can_queue =
1624 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1625
1626 spin_unlock_irqrestore(instance->host->host_lock, flags);
1627 }
1628 }
1629
1630 /**
1631 * megasas_complete_cmd_dpc - Returns FW's controller structure
1632 * @instance_addr: Address of adapter soft state
1633 *
1634 * Tasklet to complete cmds
1635 */
1636 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1637 {
1638 u32 producer;
1639 u32 consumer;
1640 u32 context;
1641 struct megasas_cmd *cmd;
1642 struct megasas_instance *instance =
1643 (struct megasas_instance *)instance_addr;
1644 unsigned long flags;
1645
1646 /* If we have already declared adapter dead, donot complete cmds */
1647 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1648 return;
1649
1650 spin_lock_irqsave(&instance->completion_lock, flags);
1651
1652 producer = *instance->producer;
1653 consumer = *instance->consumer;
1654
1655 while (consumer != producer) {
1656 context = instance->reply_queue[consumer];
1657 if (context >= instance->max_fw_cmds) {
1658 printk(KERN_ERR "Unexpected context value %x\n",
1659 context);
1660 BUG();
1661 }
1662
1663 cmd = instance->cmd_list[context];
1664
1665 megasas_complete_cmd(instance, cmd, DID_OK);
1666
1667 consumer++;
1668 if (consumer == (instance->max_fw_cmds + 1)) {
1669 consumer = 0;
1670 }
1671 }
1672
1673 *instance->consumer = producer;
1674
1675 spin_unlock_irqrestore(&instance->completion_lock, flags);
1676
1677 /*
1678 * Check if we can restore can_queue
1679 */
1680 megasas_check_and_restore_queue_depth(instance);
1681 }
1682
1683 static void
1684 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1685
1686 static void
1687 process_fw_state_change_wq(struct work_struct *work);
1688
1689 void megasas_do_ocr(struct megasas_instance *instance)
1690 {
1691 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1692 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1693 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1694 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1695 }
1696 instance->instancet->disable_intr(instance->reg_set);
1697 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1698 instance->issuepend_done = 0;
1699
1700 atomic_set(&instance->fw_outstanding, 0);
1701 megasas_internal_reset_defer_cmds(instance);
1702 process_fw_state_change_wq(&instance->work_init);
1703 }
1704
1705 /**
1706 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1707 * @instance: Adapter soft state
1708 *
1709 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1710 * complete all its outstanding commands. Returns error if one or more IOs
1711 * are pending after this time period. It also marks the controller dead.
1712 */
1713 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1714 {
1715 int i;
1716 u32 reset_index;
1717 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1718 u8 adprecovery;
1719 unsigned long flags;
1720 struct list_head clist_local;
1721 struct megasas_cmd *reset_cmd;
1722 u32 fw_state;
1723 u8 kill_adapter_flag;
1724
1725 spin_lock_irqsave(&instance->hba_lock, flags);
1726 adprecovery = instance->adprecovery;
1727 spin_unlock_irqrestore(&instance->hba_lock, flags);
1728
1729 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1730
1731 INIT_LIST_HEAD(&clist_local);
1732 spin_lock_irqsave(&instance->hba_lock, flags);
1733 list_splice_init(&instance->internal_reset_pending_q,
1734 &clist_local);
1735 spin_unlock_irqrestore(&instance->hba_lock, flags);
1736
1737 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1738 for (i = 0; i < wait_time; i++) {
1739 msleep(1000);
1740 spin_lock_irqsave(&instance->hba_lock, flags);
1741 adprecovery = instance->adprecovery;
1742 spin_unlock_irqrestore(&instance->hba_lock, flags);
1743 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1744 break;
1745 }
1746
1747 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1748 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1749 spin_lock_irqsave(&instance->hba_lock, flags);
1750 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1751 spin_unlock_irqrestore(&instance->hba_lock, flags);
1752 return FAILED;
1753 }
1754
1755 reset_index = 0;
1756 while (!list_empty(&clist_local)) {
1757 reset_cmd = list_entry((&clist_local)->next,
1758 struct megasas_cmd, list);
1759 list_del_init(&reset_cmd->list);
1760 if (reset_cmd->scmd) {
1761 reset_cmd->scmd->result = DID_RESET << 16;
1762 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1763 reset_index, reset_cmd,
1764 reset_cmd->scmd->cmnd[0]);
1765
1766 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1767 megasas_return_cmd(instance, reset_cmd);
1768 } else if (reset_cmd->sync_cmd) {
1769 printk(KERN_NOTICE "megasas:%p synch cmds"
1770 "reset queue\n",
1771 reset_cmd);
1772
1773 reset_cmd->cmd_status = ENODATA;
1774 instance->instancet->fire_cmd(instance,
1775 reset_cmd->frame_phys_addr,
1776 0, instance->reg_set);
1777 } else {
1778 printk(KERN_NOTICE "megasas: %p unexpected"
1779 "cmds lst\n",
1780 reset_cmd);
1781 }
1782 reset_index++;
1783 }
1784
1785 return SUCCESS;
1786 }
1787
1788 for (i = 0; i < wait_time; i++) {
1789
1790 int outstanding = atomic_read(&instance->fw_outstanding);
1791
1792 if (!outstanding)
1793 break;
1794
1795 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1796 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1797 "commands to complete\n",i,outstanding);
1798 /*
1799 * Call cmd completion routine. Cmd to be
1800 * be completed directly without depending on isr.
1801 */
1802 megasas_complete_cmd_dpc((unsigned long)instance);
1803 }
1804
1805 msleep(1000);
1806 }
1807
1808 i = 0;
1809 kill_adapter_flag = 0;
1810 do {
1811 fw_state = instance->instancet->read_fw_status_reg(
1812 instance->reg_set) & MFI_STATE_MASK;
1813 if ((fw_state == MFI_STATE_FAULT) &&
1814 (instance->disableOnlineCtrlReset == 0)) {
1815 if (i == 3) {
1816 kill_adapter_flag = 2;
1817 break;
1818 }
1819 megasas_do_ocr(instance);
1820 kill_adapter_flag = 1;
1821
1822 /* wait for 1 secs to let FW finish the pending cmds */
1823 msleep(1000);
1824 }
1825 i++;
1826 } while (i <= 3);
1827
1828 if (atomic_read(&instance->fw_outstanding) &&
1829 !kill_adapter_flag) {
1830 if (instance->disableOnlineCtrlReset == 0) {
1831
1832 megasas_do_ocr(instance);
1833
1834 /* wait for 5 secs to let FW finish the pending cmds */
1835 for (i = 0; i < wait_time; i++) {
1836 int outstanding =
1837 atomic_read(&instance->fw_outstanding);
1838 if (!outstanding)
1839 return SUCCESS;
1840 msleep(1000);
1841 }
1842 }
1843 }
1844
1845 if (atomic_read(&instance->fw_outstanding) ||
1846 (kill_adapter_flag == 2)) {
1847 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1848 /*
1849 * Send signal to FW to stop processing any pending cmds.
1850 * The controller will be taken offline by the OS now.
1851 */
1852 if ((instance->pdev->device ==
1853 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1854 (instance->pdev->device ==
1855 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1856 writel(MFI_STOP_ADP,
1857 &instance->reg_set->doorbell);
1858 } else {
1859 writel(MFI_STOP_ADP,
1860 &instance->reg_set->inbound_doorbell);
1861 }
1862 megasas_dump_pending_frames(instance);
1863 spin_lock_irqsave(&instance->hba_lock, flags);
1864 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1865 spin_unlock_irqrestore(&instance->hba_lock, flags);
1866 return FAILED;
1867 }
1868
1869 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1870
1871 return SUCCESS;
1872 }
1873
1874 /**
1875 * megasas_generic_reset - Generic reset routine
1876 * @scmd: Mid-layer SCSI command
1877 *
1878 * This routine implements a generic reset handler for device, bus and host
1879 * reset requests. Device, bus and host specific reset handlers can use this
1880 * function after they do their specific tasks.
1881 */
1882 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1883 {
1884 int ret_val;
1885 struct megasas_instance *instance;
1886
1887 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1888
1889 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1890 scmd->cmnd[0], scmd->retries);
1891
1892 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1893 printk(KERN_ERR "megasas: cannot recover from previous reset "
1894 "failures\n");
1895 return FAILED;
1896 }
1897
1898 ret_val = megasas_wait_for_outstanding(instance);
1899 if (ret_val == SUCCESS)
1900 printk(KERN_NOTICE "megasas: reset successful \n");
1901 else
1902 printk(KERN_ERR "megasas: failed to do reset\n");
1903
1904 return ret_val;
1905 }
1906
1907 /**
1908 * megasas_reset_timer - quiesce the adapter if required
1909 * @scmd: scsi cmnd
1910 *
1911 * Sets the FW busy flag and reduces the host->can_queue if the
1912 * cmd has not been completed within the timeout period.
1913 */
1914 static enum
1915 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1916 {
1917 struct megasas_instance *instance;
1918 unsigned long flags;
1919
1920 if (time_after(jiffies, scmd->jiffies_at_alloc +
1921 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1922 return BLK_EH_NOT_HANDLED;
1923 }
1924
1925 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1926 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1927 /* FW is busy, throttle IO */
1928 spin_lock_irqsave(instance->host->host_lock, flags);
1929
1930 instance->host->can_queue = 16;
1931 instance->last_time = jiffies;
1932 instance->flag |= MEGASAS_FW_BUSY;
1933
1934 spin_unlock_irqrestore(instance->host->host_lock, flags);
1935 }
1936 return BLK_EH_RESET_TIMER;
1937 }
1938
1939 /**
1940 * megasas_reset_device - Device reset handler entry point
1941 */
1942 static int megasas_reset_device(struct scsi_cmnd *scmd)
1943 {
1944 int ret;
1945
1946 /*
1947 * First wait for all commands to complete
1948 */
1949 ret = megasas_generic_reset(scmd);
1950
1951 return ret;
1952 }
1953
1954 /**
1955 * megasas_reset_bus_host - Bus & host reset handler entry point
1956 */
1957 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1958 {
1959 int ret;
1960 struct megasas_instance *instance;
1961 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1962
1963 /*
1964 * First wait for all commands to complete
1965 */
1966 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1967 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
1968 ret = megasas_reset_fusion(scmd->device->host);
1969 else
1970 ret = megasas_generic_reset(scmd);
1971
1972 return ret;
1973 }
1974
1975 /**
1976 * megasas_bios_param - Returns disk geometry for a disk
1977 * @sdev: device handle
1978 * @bdev: block device
1979 * @capacity: drive capacity
1980 * @geom: geometry parameters
1981 */
1982 static int
1983 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1984 sector_t capacity, int geom[])
1985 {
1986 int heads;
1987 int sectors;
1988 sector_t cylinders;
1989 unsigned long tmp;
1990 /* Default heads (64) & sectors (32) */
1991 heads = 64;
1992 sectors = 32;
1993
1994 tmp = heads * sectors;
1995 cylinders = capacity;
1996
1997 sector_div(cylinders, tmp);
1998
1999 /*
2000 * Handle extended translation size for logical drives > 1Gb
2001 */
2002
2003 if (capacity >= 0x200000) {
2004 heads = 255;
2005 sectors = 63;
2006 tmp = heads*sectors;
2007 cylinders = capacity;
2008 sector_div(cylinders, tmp);
2009 }
2010
2011 geom[0] = heads;
2012 geom[1] = sectors;
2013 geom[2] = cylinders;
2014
2015 return 0;
2016 }
2017
2018 static void megasas_aen_polling(struct work_struct *work);
2019
2020 /**
2021 * megasas_service_aen - Processes an event notification
2022 * @instance: Adapter soft state
2023 * @cmd: AEN command completed by the ISR
2024 *
2025 * For AEN, driver sends a command down to FW that is held by the FW till an
2026 * event occurs. When an event of interest occurs, FW completes the command
2027 * that it was previously holding.
2028 *
2029 * This routines sends SIGIO signal to processes that have registered with the
2030 * driver for AEN.
2031 */
2032 static void
2033 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2034 {
2035 unsigned long flags;
2036 /*
2037 * Don't signal app if it is just an aborted previously registered aen
2038 */
2039 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2040 spin_lock_irqsave(&poll_aen_lock, flags);
2041 megasas_poll_wait_aen = 1;
2042 spin_unlock_irqrestore(&poll_aen_lock, flags);
2043 wake_up(&megasas_poll_wait);
2044 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2045 }
2046 else
2047 cmd->abort_aen = 0;
2048
2049 instance->aen_cmd = NULL;
2050 megasas_return_cmd(instance, cmd);
2051
2052 if ((instance->unload == 0) &&
2053 ((instance->issuepend_done == 1))) {
2054 struct megasas_aen_event *ev;
2055 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2056 if (!ev) {
2057 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2058 } else {
2059 ev->instance = instance;
2060 instance->ev = ev;
2061 INIT_WORK(&ev->hotplug_work, megasas_aen_polling);
2062 schedule_delayed_work(
2063 (struct delayed_work *)&ev->hotplug_work, 0);
2064 }
2065 }
2066 }
2067
2068 static int megasas_change_queue_depth(struct scsi_device *sdev,
2069 int queue_depth, int reason)
2070 {
2071 if (reason != SCSI_QDEPTH_DEFAULT)
2072 return -EOPNOTSUPP;
2073
2074 if (queue_depth > sdev->host->can_queue)
2075 queue_depth = sdev->host->can_queue;
2076 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2077 queue_depth);
2078
2079 return queue_depth;
2080 }
2081
2082 /*
2083 * Scsi host template for megaraid_sas driver
2084 */
2085 static struct scsi_host_template megasas_template = {
2086
2087 .module = THIS_MODULE,
2088 .name = "LSI SAS based MegaRAID driver",
2089 .proc_name = "megaraid_sas",
2090 .slave_configure = megasas_slave_configure,
2091 .slave_alloc = megasas_slave_alloc,
2092 .queuecommand = megasas_queue_command,
2093 .eh_device_reset_handler = megasas_reset_device,
2094 .eh_bus_reset_handler = megasas_reset_bus_host,
2095 .eh_host_reset_handler = megasas_reset_bus_host,
2096 .eh_timed_out = megasas_reset_timer,
2097 .bios_param = megasas_bios_param,
2098 .use_clustering = ENABLE_CLUSTERING,
2099 .change_queue_depth = megasas_change_queue_depth,
2100 };
2101
2102 /**
2103 * megasas_complete_int_cmd - Completes an internal command
2104 * @instance: Adapter soft state
2105 * @cmd: Command to be completed
2106 *
2107 * The megasas_issue_blocked_cmd() function waits for a command to complete
2108 * after it issues a command. This function wakes up that waiting routine by
2109 * calling wake_up() on the wait queue.
2110 */
2111 static void
2112 megasas_complete_int_cmd(struct megasas_instance *instance,
2113 struct megasas_cmd *cmd)
2114 {
2115 cmd->cmd_status = cmd->frame->io.cmd_status;
2116
2117 if (cmd->cmd_status == ENODATA) {
2118 cmd->cmd_status = 0;
2119 }
2120 wake_up(&instance->int_cmd_wait_q);
2121 }
2122
2123 /**
2124 * megasas_complete_abort - Completes aborting a command
2125 * @instance: Adapter soft state
2126 * @cmd: Cmd that was issued to abort another cmd
2127 *
2128 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2129 * after it issues an abort on a previously issued command. This function
2130 * wakes up all functions waiting on the same wait queue.
2131 */
2132 static void
2133 megasas_complete_abort(struct megasas_instance *instance,
2134 struct megasas_cmd *cmd)
2135 {
2136 if (cmd->sync_cmd) {
2137 cmd->sync_cmd = 0;
2138 cmd->cmd_status = 0;
2139 wake_up(&instance->abort_cmd_wait_q);
2140 }
2141
2142 return;
2143 }
2144
2145 /**
2146 * megasas_complete_cmd - Completes a command
2147 * @instance: Adapter soft state
2148 * @cmd: Command to be completed
2149 * @alt_status: If non-zero, use this value as status to
2150 * SCSI mid-layer instead of the value returned
2151 * by the FW. This should be used if caller wants
2152 * an alternate status (as in the case of aborted
2153 * commands)
2154 */
2155 void
2156 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2157 u8 alt_status)
2158 {
2159 int exception = 0;
2160 struct megasas_header *hdr = &cmd->frame->hdr;
2161 unsigned long flags;
2162 struct fusion_context *fusion = instance->ctrl_context;
2163
2164 /* flag for the retry reset */
2165 cmd->retry_for_fw_reset = 0;
2166
2167 if (cmd->scmd)
2168 cmd->scmd->SCp.ptr = NULL;
2169
2170 switch (hdr->cmd) {
2171 case MFI_CMD_INVALID:
2172 /* Some older 1068 controller FW may keep a pended
2173 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2174 when booting the kdump kernel. Ignore this command to
2175 prevent a kernel panic on shutdown of the kdump kernel. */
2176 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2177 "completed.\n");
2178 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2179 "other than PERC5, please upgrade your firmware.\n");
2180 break;
2181 case MFI_CMD_PD_SCSI_IO:
2182 case MFI_CMD_LD_SCSI_IO:
2183
2184 /*
2185 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2186 * issued either through an IO path or an IOCTL path. If it
2187 * was via IOCTL, we will send it to internal completion.
2188 */
2189 if (cmd->sync_cmd) {
2190 cmd->sync_cmd = 0;
2191 megasas_complete_int_cmd(instance, cmd);
2192 break;
2193 }
2194
2195 case MFI_CMD_LD_READ:
2196 case MFI_CMD_LD_WRITE:
2197
2198 if (alt_status) {
2199 cmd->scmd->result = alt_status << 16;
2200 exception = 1;
2201 }
2202
2203 if (exception) {
2204
2205 atomic_dec(&instance->fw_outstanding);
2206
2207 scsi_dma_unmap(cmd->scmd);
2208 cmd->scmd->scsi_done(cmd->scmd);
2209 megasas_return_cmd(instance, cmd);
2210
2211 break;
2212 }
2213
2214 switch (hdr->cmd_status) {
2215
2216 case MFI_STAT_OK:
2217 cmd->scmd->result = DID_OK << 16;
2218 break;
2219
2220 case MFI_STAT_SCSI_IO_FAILED:
2221 case MFI_STAT_LD_INIT_IN_PROGRESS:
2222 cmd->scmd->result =
2223 (DID_ERROR << 16) | hdr->scsi_status;
2224 break;
2225
2226 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2227
2228 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2229
2230 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2231 memset(cmd->scmd->sense_buffer, 0,
2232 SCSI_SENSE_BUFFERSIZE);
2233 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2234 hdr->sense_len);
2235
2236 cmd->scmd->result |= DRIVER_SENSE << 24;
2237 }
2238
2239 break;
2240
2241 case MFI_STAT_LD_OFFLINE:
2242 case MFI_STAT_DEVICE_NOT_FOUND:
2243 cmd->scmd->result = DID_BAD_TARGET << 16;
2244 break;
2245
2246 default:
2247 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2248 hdr->cmd_status);
2249 cmd->scmd->result = DID_ERROR << 16;
2250 break;
2251 }
2252
2253 atomic_dec(&instance->fw_outstanding);
2254
2255 scsi_dma_unmap(cmd->scmd);
2256 cmd->scmd->scsi_done(cmd->scmd);
2257 megasas_return_cmd(instance, cmd);
2258
2259 break;
2260
2261 case MFI_CMD_SMP:
2262 case MFI_CMD_STP:
2263 case MFI_CMD_DCMD:
2264 /* Check for LD map update */
2265 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2266 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2267 spin_lock_irqsave(instance->host->host_lock, flags);
2268 if (cmd->frame->hdr.cmd_status != 0) {
2269 if (cmd->frame->hdr.cmd_status !=
2270 MFI_STAT_NOT_FOUND)
2271 printk(KERN_WARNING "megasas: map sync"
2272 "failed, status = 0x%x.\n",
2273 cmd->frame->hdr.cmd_status);
2274 else {
2275 megasas_return_cmd(instance, cmd);
2276 spin_unlock_irqrestore(
2277 instance->host->host_lock,
2278 flags);
2279 break;
2280 }
2281 } else
2282 instance->map_id++;
2283 megasas_return_cmd(instance, cmd);
2284 if (MR_ValidateMapInfo(
2285 fusion->ld_map[(instance->map_id & 1)],
2286 fusion->load_balance_info))
2287 fusion->fast_path_io = 1;
2288 else
2289 fusion->fast_path_io = 0;
2290 megasas_sync_map_info(instance);
2291 spin_unlock_irqrestore(instance->host->host_lock,
2292 flags);
2293 break;
2294 }
2295 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2296 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2297 spin_lock_irqsave(&poll_aen_lock, flags);
2298 megasas_poll_wait_aen = 0;
2299 spin_unlock_irqrestore(&poll_aen_lock, flags);
2300 }
2301
2302 /*
2303 * See if got an event notification
2304 */
2305 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2306 megasas_service_aen(instance, cmd);
2307 else
2308 megasas_complete_int_cmd(instance, cmd);
2309
2310 break;
2311
2312 case MFI_CMD_ABORT:
2313 /*
2314 * Cmd issued to abort another cmd returned
2315 */
2316 megasas_complete_abort(instance, cmd);
2317 break;
2318
2319 default:
2320 printk("megasas: Unknown command completed! [0x%X]\n",
2321 hdr->cmd);
2322 break;
2323 }
2324 }
2325
2326 /**
2327 * megasas_issue_pending_cmds_again - issue all pending cmds
2328 * in FW again because of the fw reset
2329 * @instance: Adapter soft state
2330 */
2331 static inline void
2332 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2333 {
2334 struct megasas_cmd *cmd;
2335 struct list_head clist_local;
2336 union megasas_evt_class_locale class_locale;
2337 unsigned long flags;
2338 u32 seq_num;
2339
2340 INIT_LIST_HEAD(&clist_local);
2341 spin_lock_irqsave(&instance->hba_lock, flags);
2342 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2343 spin_unlock_irqrestore(&instance->hba_lock, flags);
2344
2345 while (!list_empty(&clist_local)) {
2346 cmd = list_entry((&clist_local)->next,
2347 struct megasas_cmd, list);
2348 list_del_init(&cmd->list);
2349
2350 if (cmd->sync_cmd || cmd->scmd) {
2351 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2352 "detected to be pending while HBA reset.\n",
2353 cmd, cmd->scmd, cmd->sync_cmd);
2354
2355 cmd->retry_for_fw_reset++;
2356
2357 if (cmd->retry_for_fw_reset == 3) {
2358 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2359 "was tried multiple times during reset."
2360 "Shutting down the HBA\n",
2361 cmd, cmd->scmd, cmd->sync_cmd);
2362 megaraid_sas_kill_hba(instance);
2363
2364 instance->adprecovery =
2365 MEGASAS_HW_CRITICAL_ERROR;
2366 return;
2367 }
2368 }
2369
2370 if (cmd->sync_cmd == 1) {
2371 if (cmd->scmd) {
2372 printk(KERN_NOTICE "megaraid_sas: unexpected"
2373 "cmd attached to internal command!\n");
2374 }
2375 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2376 "on the internal reset queue,"
2377 "issue it again.\n", cmd);
2378 cmd->cmd_status = ENODATA;
2379 instance->instancet->fire_cmd(instance,
2380 cmd->frame_phys_addr ,
2381 0, instance->reg_set);
2382 } else if (cmd->scmd) {
2383 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2384 "detected on the internal queue, issue again.\n",
2385 cmd, cmd->scmd->cmnd[0]);
2386
2387 atomic_inc(&instance->fw_outstanding);
2388 instance->instancet->fire_cmd(instance,
2389 cmd->frame_phys_addr,
2390 cmd->frame_count-1, instance->reg_set);
2391 } else {
2392 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2393 "internal reset defer list while re-issue!!\n",
2394 cmd);
2395 }
2396 }
2397
2398 if (instance->aen_cmd) {
2399 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2400 megasas_return_cmd(instance, instance->aen_cmd);
2401
2402 instance->aen_cmd = NULL;
2403 }
2404
2405 /*
2406 * Initiate AEN (Asynchronous Event Notification)
2407 */
2408 seq_num = instance->last_seq_num;
2409 class_locale.members.reserved = 0;
2410 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2411 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2412
2413 megasas_register_aen(instance, seq_num, class_locale.word);
2414 }
2415
2416 /**
2417 * Move the internal reset pending commands to a deferred queue.
2418 *
2419 * We move the commands pending at internal reset time to a
2420 * pending queue. This queue would be flushed after successful
2421 * completion of the internal reset sequence. if the internal reset
2422 * did not complete in time, the kernel reset handler would flush
2423 * these commands.
2424 **/
2425 static void
2426 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2427 {
2428 struct megasas_cmd *cmd;
2429 int i;
2430 u32 max_cmd = instance->max_fw_cmds;
2431 u32 defer_index;
2432 unsigned long flags;
2433
2434 defer_index = 0;
2435 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2436 for (i = 0; i < max_cmd; i++) {
2437 cmd = instance->cmd_list[i];
2438 if (cmd->sync_cmd == 1 || cmd->scmd) {
2439 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2440 "on the defer queue as internal\n",
2441 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2442
2443 if (!list_empty(&cmd->list)) {
2444 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2445 " moving this cmd:%p, %d %p, it was"
2446 "discovered on some list?\n",
2447 cmd, cmd->sync_cmd, cmd->scmd);
2448
2449 list_del_init(&cmd->list);
2450 }
2451 defer_index++;
2452 list_add_tail(&cmd->list,
2453 &instance->internal_reset_pending_q);
2454 }
2455 }
2456 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2457 }
2458
2459
2460 static void
2461 process_fw_state_change_wq(struct work_struct *work)
2462 {
2463 struct megasas_instance *instance =
2464 container_of(work, struct megasas_instance, work_init);
2465 u32 wait;
2466 unsigned long flags;
2467
2468 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2469 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2470 instance->adprecovery);
2471 return ;
2472 }
2473
2474 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2475 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2476 "state, restarting it...\n");
2477
2478 instance->instancet->disable_intr(instance->reg_set);
2479 atomic_set(&instance->fw_outstanding, 0);
2480
2481 atomic_set(&instance->fw_reset_no_pci_access, 1);
2482 instance->instancet->adp_reset(instance, instance->reg_set);
2483 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2484
2485 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2486 "initiating next stage...\n");
2487
2488 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2489 "state 2 starting...\n");
2490
2491 /*waitting for about 20 second before start the second init*/
2492 for (wait = 0; wait < 30; wait++) {
2493 msleep(1000);
2494 }
2495
2496 if (megasas_transition_to_ready(instance, 1)) {
2497 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2498
2499 megaraid_sas_kill_hba(instance);
2500 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2501 return ;
2502 }
2503
2504 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2505 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2506 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2507 ) {
2508 *instance->consumer = *instance->producer;
2509 } else {
2510 *instance->consumer = 0;
2511 *instance->producer = 0;
2512 }
2513
2514 megasas_issue_init_mfi(instance);
2515
2516 spin_lock_irqsave(&instance->hba_lock, flags);
2517 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2518 spin_unlock_irqrestore(&instance->hba_lock, flags);
2519 instance->instancet->enable_intr(instance->reg_set);
2520
2521 megasas_issue_pending_cmds_again(instance);
2522 instance->issuepend_done = 1;
2523 }
2524 return ;
2525 }
2526
2527 /**
2528 * megasas_deplete_reply_queue - Processes all completed commands
2529 * @instance: Adapter soft state
2530 * @alt_status: Alternate status to be returned to
2531 * SCSI mid-layer instead of the status
2532 * returned by the FW
2533 * Note: this must be called with hba lock held
2534 */
2535 static int
2536 megasas_deplete_reply_queue(struct megasas_instance *instance,
2537 u8 alt_status)
2538 {
2539 u32 mfiStatus;
2540 u32 fw_state;
2541
2542 if ((mfiStatus = instance->instancet->check_reset(instance,
2543 instance->reg_set)) == 1) {
2544 return IRQ_HANDLED;
2545 }
2546
2547 if ((mfiStatus = instance->instancet->clear_intr(
2548 instance->reg_set)
2549 ) == 0) {
2550 /* Hardware may not set outbound_intr_status in MSI-X mode */
2551 if (!instance->msix_vectors)
2552 return IRQ_NONE;
2553 }
2554
2555 instance->mfiStatus = mfiStatus;
2556
2557 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2558 fw_state = instance->instancet->read_fw_status_reg(
2559 instance->reg_set) & MFI_STATE_MASK;
2560
2561 if (fw_state != MFI_STATE_FAULT) {
2562 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2563 fw_state);
2564 }
2565
2566 if ((fw_state == MFI_STATE_FAULT) &&
2567 (instance->disableOnlineCtrlReset == 0)) {
2568 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2569
2570 if ((instance->pdev->device ==
2571 PCI_DEVICE_ID_LSI_SAS1064R) ||
2572 (instance->pdev->device ==
2573 PCI_DEVICE_ID_DELL_PERC5) ||
2574 (instance->pdev->device ==
2575 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2576
2577 *instance->consumer =
2578 MEGASAS_ADPRESET_INPROG_SIGN;
2579 }
2580
2581
2582 instance->instancet->disable_intr(instance->reg_set);
2583 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2584 instance->issuepend_done = 0;
2585
2586 atomic_set(&instance->fw_outstanding, 0);
2587 megasas_internal_reset_defer_cmds(instance);
2588
2589 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2590 fw_state, instance->adprecovery);
2591
2592 schedule_work(&instance->work_init);
2593 return IRQ_HANDLED;
2594
2595 } else {
2596 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2597 fw_state, instance->disableOnlineCtrlReset);
2598 }
2599 }
2600
2601 tasklet_schedule(&instance->isr_tasklet);
2602 return IRQ_HANDLED;
2603 }
2604 /**
2605 * megasas_isr - isr entry point
2606 */
2607 static irqreturn_t megasas_isr(int irq, void *devp)
2608 {
2609 struct megasas_irq_context *irq_context = devp;
2610 struct megasas_instance *instance = irq_context->instance;
2611 unsigned long flags;
2612 irqreturn_t rc;
2613
2614 if (atomic_read(&instance->fw_reset_no_pci_access))
2615 return IRQ_HANDLED;
2616
2617 spin_lock_irqsave(&instance->hba_lock, flags);
2618 rc = megasas_deplete_reply_queue(instance, DID_OK);
2619 spin_unlock_irqrestore(&instance->hba_lock, flags);
2620
2621 return rc;
2622 }
2623
2624 /**
2625 * megasas_transition_to_ready - Move the FW to READY state
2626 * @instance: Adapter soft state
2627 *
2628 * During the initialization, FW passes can potentially be in any one of
2629 * several possible states. If the FW in operational, waiting-for-handshake
2630 * states, driver must take steps to bring it to ready state. Otherwise, it
2631 * has to wait for the ready state.
2632 */
2633 int
2634 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2635 {
2636 int i;
2637 u8 max_wait;
2638 u32 fw_state;
2639 u32 cur_state;
2640 u32 abs_state, curr_abs_state;
2641
2642 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2643
2644 if (fw_state != MFI_STATE_READY)
2645 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2646 " state\n");
2647
2648 while (fw_state != MFI_STATE_READY) {
2649
2650 abs_state =
2651 instance->instancet->read_fw_status_reg(instance->reg_set);
2652
2653 switch (fw_state) {
2654
2655 case MFI_STATE_FAULT:
2656 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2657 if (ocr) {
2658 max_wait = MEGASAS_RESET_WAIT_TIME;
2659 cur_state = MFI_STATE_FAULT;
2660 break;
2661 } else
2662 return -ENODEV;
2663
2664 case MFI_STATE_WAIT_HANDSHAKE:
2665 /*
2666 * Set the CLR bit in inbound doorbell
2667 */
2668 if ((instance->pdev->device ==
2669 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2670 (instance->pdev->device ==
2671 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2672 (instance->pdev->device ==
2673 PCI_DEVICE_ID_LSI_FUSION) ||
2674 (instance->pdev->device ==
2675 PCI_DEVICE_ID_LSI_INVADER)) {
2676 writel(
2677 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2678 &instance->reg_set->doorbell);
2679 } else {
2680 writel(
2681 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2682 &instance->reg_set->inbound_doorbell);
2683 }
2684
2685 max_wait = MEGASAS_RESET_WAIT_TIME;
2686 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2687 break;
2688
2689 case MFI_STATE_BOOT_MESSAGE_PENDING:
2690 if ((instance->pdev->device ==
2691 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2692 (instance->pdev->device ==
2693 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2694 (instance->pdev->device ==
2695 PCI_DEVICE_ID_LSI_FUSION) ||
2696 (instance->pdev->device ==
2697 PCI_DEVICE_ID_LSI_INVADER)) {
2698 writel(MFI_INIT_HOTPLUG,
2699 &instance->reg_set->doorbell);
2700 } else
2701 writel(MFI_INIT_HOTPLUG,
2702 &instance->reg_set->inbound_doorbell);
2703
2704 max_wait = MEGASAS_RESET_WAIT_TIME;
2705 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2706 break;
2707
2708 case MFI_STATE_OPERATIONAL:
2709 /*
2710 * Bring it to READY state; assuming max wait 10 secs
2711 */
2712 instance->instancet->disable_intr(instance->reg_set);
2713 if ((instance->pdev->device ==
2714 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2715 (instance->pdev->device ==
2716 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2717 (instance->pdev->device
2718 == PCI_DEVICE_ID_LSI_FUSION) ||
2719 (instance->pdev->device
2720 == PCI_DEVICE_ID_LSI_INVADER)) {
2721 writel(MFI_RESET_FLAGS,
2722 &instance->reg_set->doorbell);
2723 if ((instance->pdev->device ==
2724 PCI_DEVICE_ID_LSI_FUSION) ||
2725 (instance->pdev->device ==
2726 PCI_DEVICE_ID_LSI_INVADER)) {
2727 for (i = 0; i < (10 * 1000); i += 20) {
2728 if (readl(
2729 &instance->
2730 reg_set->
2731 doorbell) & 1)
2732 msleep(20);
2733 else
2734 break;
2735 }
2736 }
2737 } else
2738 writel(MFI_RESET_FLAGS,
2739 &instance->reg_set->inbound_doorbell);
2740
2741 max_wait = MEGASAS_RESET_WAIT_TIME;
2742 cur_state = MFI_STATE_OPERATIONAL;
2743 break;
2744
2745 case MFI_STATE_UNDEFINED:
2746 /*
2747 * This state should not last for more than 2 seconds
2748 */
2749 max_wait = MEGASAS_RESET_WAIT_TIME;
2750 cur_state = MFI_STATE_UNDEFINED;
2751 break;
2752
2753 case MFI_STATE_BB_INIT:
2754 max_wait = MEGASAS_RESET_WAIT_TIME;
2755 cur_state = MFI_STATE_BB_INIT;
2756 break;
2757
2758 case MFI_STATE_FW_INIT:
2759 max_wait = MEGASAS_RESET_WAIT_TIME;
2760 cur_state = MFI_STATE_FW_INIT;
2761 break;
2762
2763 case MFI_STATE_FW_INIT_2:
2764 max_wait = MEGASAS_RESET_WAIT_TIME;
2765 cur_state = MFI_STATE_FW_INIT_2;
2766 break;
2767
2768 case MFI_STATE_DEVICE_SCAN:
2769 max_wait = MEGASAS_RESET_WAIT_TIME;
2770 cur_state = MFI_STATE_DEVICE_SCAN;
2771 break;
2772
2773 case MFI_STATE_FLUSH_CACHE:
2774 max_wait = MEGASAS_RESET_WAIT_TIME;
2775 cur_state = MFI_STATE_FLUSH_CACHE;
2776 break;
2777
2778 default:
2779 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2780 fw_state);
2781 return -ENODEV;
2782 }
2783
2784 /*
2785 * The cur_state should not last for more than max_wait secs
2786 */
2787 for (i = 0; i < (max_wait * 1000); i++) {
2788 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2789 MFI_STATE_MASK ;
2790 curr_abs_state =
2791 instance->instancet->read_fw_status_reg(instance->reg_set);
2792
2793 if (abs_state == curr_abs_state) {
2794 msleep(1);
2795 } else
2796 break;
2797 }
2798
2799 /*
2800 * Return error if fw_state hasn't changed after max_wait
2801 */
2802 if (curr_abs_state == abs_state) {
2803 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2804 "in %d secs\n", fw_state, max_wait);
2805 return -ENODEV;
2806 }
2807 }
2808 printk(KERN_INFO "megasas: FW now in Ready state\n");
2809
2810 return 0;
2811 }
2812
2813 /**
2814 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2815 * @instance: Adapter soft state
2816 */
2817 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2818 {
2819 int i;
2820 u32 max_cmd = instance->max_mfi_cmds;
2821 struct megasas_cmd *cmd;
2822
2823 if (!instance->frame_dma_pool)
2824 return;
2825
2826 /*
2827 * Return all frames to pool
2828 */
2829 for (i = 0; i < max_cmd; i++) {
2830
2831 cmd = instance->cmd_list[i];
2832
2833 if (cmd->frame)
2834 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2835 cmd->frame_phys_addr);
2836
2837 if (cmd->sense)
2838 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2839 cmd->sense_phys_addr);
2840 }
2841
2842 /*
2843 * Now destroy the pool itself
2844 */
2845 pci_pool_destroy(instance->frame_dma_pool);
2846 pci_pool_destroy(instance->sense_dma_pool);
2847
2848 instance->frame_dma_pool = NULL;
2849 instance->sense_dma_pool = NULL;
2850 }
2851
2852 /**
2853 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2854 * @instance: Adapter soft state
2855 *
2856 * Each command packet has an embedded DMA memory buffer that is used for
2857 * filling MFI frame and the SG list that immediately follows the frame. This
2858 * function creates those DMA memory buffers for each command packet by using
2859 * PCI pool facility.
2860 */
2861 static int megasas_create_frame_pool(struct megasas_instance *instance)
2862 {
2863 int i;
2864 u32 max_cmd;
2865 u32 sge_sz;
2866 u32 sgl_sz;
2867 u32 total_sz;
2868 u32 frame_count;
2869 struct megasas_cmd *cmd;
2870
2871 max_cmd = instance->max_mfi_cmds;
2872
2873 /*
2874 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2875 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2876 */
2877 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2878 sizeof(struct megasas_sge32);
2879
2880 if (instance->flag_ieee) {
2881 sge_sz = sizeof(struct megasas_sge_skinny);
2882 }
2883
2884 /*
2885 * Calculated the number of 64byte frames required for SGL
2886 */
2887 sgl_sz = sge_sz * instance->max_num_sge;
2888 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2889 frame_count = 15;
2890
2891 /*
2892 * We need one extra frame for the MFI command
2893 */
2894 frame_count++;
2895
2896 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2897 /*
2898 * Use DMA pool facility provided by PCI layer
2899 */
2900 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2901 instance->pdev, total_sz, 64,
2902 0);
2903
2904 if (!instance->frame_dma_pool) {
2905 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2906 return -ENOMEM;
2907 }
2908
2909 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2910 instance->pdev, 128, 4, 0);
2911
2912 if (!instance->sense_dma_pool) {
2913 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2914
2915 pci_pool_destroy(instance->frame_dma_pool);
2916 instance->frame_dma_pool = NULL;
2917
2918 return -ENOMEM;
2919 }
2920
2921 /*
2922 * Allocate and attach a frame to each of the commands in cmd_list.
2923 * By making cmd->index as the context instead of the &cmd, we can
2924 * always use 32bit context regardless of the architecture
2925 */
2926 for (i = 0; i < max_cmd; i++) {
2927
2928 cmd = instance->cmd_list[i];
2929
2930 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2931 GFP_KERNEL, &cmd->frame_phys_addr);
2932
2933 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2934 GFP_KERNEL, &cmd->sense_phys_addr);
2935
2936 /*
2937 * megasas_teardown_frame_pool() takes care of freeing
2938 * whatever has been allocated
2939 */
2940 if (!cmd->frame || !cmd->sense) {
2941 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2942 megasas_teardown_frame_pool(instance);
2943 return -ENOMEM;
2944 }
2945
2946 memset(cmd->frame, 0, total_sz);
2947 cmd->frame->io.context = cmd->index;
2948 cmd->frame->io.pad_0 = 0;
2949 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
2950 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
2951 (reset_devices))
2952 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
2953 }
2954
2955 return 0;
2956 }
2957
2958 /**
2959 * megasas_free_cmds - Free all the cmds in the free cmd pool
2960 * @instance: Adapter soft state
2961 */
2962 void megasas_free_cmds(struct megasas_instance *instance)
2963 {
2964 int i;
2965 /* First free the MFI frame pool */
2966 megasas_teardown_frame_pool(instance);
2967
2968 /* Free all the commands in the cmd_list */
2969 for (i = 0; i < instance->max_mfi_cmds; i++)
2970
2971 kfree(instance->cmd_list[i]);
2972
2973 /* Free the cmd_list buffer itself */
2974 kfree(instance->cmd_list);
2975 instance->cmd_list = NULL;
2976
2977 INIT_LIST_HEAD(&instance->cmd_pool);
2978 }
2979
2980 /**
2981 * megasas_alloc_cmds - Allocates the command packets
2982 * @instance: Adapter soft state
2983 *
2984 * Each command that is issued to the FW, whether IO commands from the OS or
2985 * internal commands like IOCTLs, are wrapped in local data structure called
2986 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2987 * the FW.
2988 *
2989 * Each frame has a 32-bit field called context (tag). This context is used
2990 * to get back the megasas_cmd from the frame when a frame gets completed in
2991 * the ISR. Typically the address of the megasas_cmd itself would be used as
2992 * the context. But we wanted to keep the differences between 32 and 64 bit
2993 * systems to the mininum. We always use 32 bit integers for the context. In
2994 * this driver, the 32 bit values are the indices into an array cmd_list.
2995 * This array is used only to look up the megasas_cmd given the context. The
2996 * free commands themselves are maintained in a linked list called cmd_pool.
2997 */
2998 int megasas_alloc_cmds(struct megasas_instance *instance)
2999 {
3000 int i;
3001 int j;
3002 u32 max_cmd;
3003 struct megasas_cmd *cmd;
3004
3005 max_cmd = instance->max_mfi_cmds;
3006
3007 /*
3008 * instance->cmd_list is an array of struct megasas_cmd pointers.
3009 * Allocate the dynamic array first and then allocate individual
3010 * commands.
3011 */
3012 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3013
3014 if (!instance->cmd_list) {
3015 printk(KERN_DEBUG "megasas: out of memory\n");
3016 return -ENOMEM;
3017 }
3018
3019 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3020
3021 for (i = 0; i < max_cmd; i++) {
3022 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3023 GFP_KERNEL);
3024
3025 if (!instance->cmd_list[i]) {
3026
3027 for (j = 0; j < i; j++)
3028 kfree(instance->cmd_list[j]);
3029
3030 kfree(instance->cmd_list);
3031 instance->cmd_list = NULL;
3032
3033 return -ENOMEM;
3034 }
3035 }
3036
3037 /*
3038 * Add all the commands to command pool (instance->cmd_pool)
3039 */
3040 for (i = 0; i < max_cmd; i++) {
3041 cmd = instance->cmd_list[i];
3042 memset(cmd, 0, sizeof(struct megasas_cmd));
3043 cmd->index = i;
3044 cmd->scmd = NULL;
3045 cmd->instance = instance;
3046
3047 list_add_tail(&cmd->list, &instance->cmd_pool);
3048 }
3049
3050 /*
3051 * Create a frame pool and assign one frame to each cmd
3052 */
3053 if (megasas_create_frame_pool(instance)) {
3054 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3055 megasas_free_cmds(instance);
3056 }
3057
3058 return 0;
3059 }
3060
3061 /*
3062 * megasas_get_pd_list_info - Returns FW's pd_list structure
3063 * @instance: Adapter soft state
3064 * @pd_list: pd_list structure
3065 *
3066 * Issues an internal command (DCMD) to get the FW's controller PD
3067 * list structure. This information is mainly used to find out SYSTEM
3068 * supported by the FW.
3069 */
3070 static int
3071 megasas_get_pd_list(struct megasas_instance *instance)
3072 {
3073 int ret = 0, pd_index = 0;
3074 struct megasas_cmd *cmd;
3075 struct megasas_dcmd_frame *dcmd;
3076 struct MR_PD_LIST *ci;
3077 struct MR_PD_ADDRESS *pd_addr;
3078 dma_addr_t ci_h = 0;
3079
3080 cmd = megasas_get_cmd(instance);
3081
3082 if (!cmd) {
3083 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3084 return -ENOMEM;
3085 }
3086
3087 dcmd = &cmd->frame->dcmd;
3088
3089 ci = pci_alloc_consistent(instance->pdev,
3090 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3091
3092 if (!ci) {
3093 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3094 megasas_return_cmd(instance, cmd);
3095 return -ENOMEM;
3096 }
3097
3098 memset(ci, 0, sizeof(*ci));
3099 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3100
3101 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3102 dcmd->mbox.b[1] = 0;
3103 dcmd->cmd = MFI_CMD_DCMD;
3104 dcmd->cmd_status = 0xFF;
3105 dcmd->sge_count = 1;
3106 dcmd->flags = MFI_FRAME_DIR_READ;
3107 dcmd->timeout = 0;
3108 dcmd->pad_0 = 0;
3109 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3110 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3111 dcmd->sgl.sge32[0].phys_addr = ci_h;
3112 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3113
3114 if (!megasas_issue_polled(instance, cmd)) {
3115 ret = 0;
3116 } else {
3117 ret = -1;
3118 }
3119
3120 /*
3121 * the following function will get the instance PD LIST.
3122 */
3123
3124 pd_addr = ci->addr;
3125
3126 if ( ret == 0 &&
3127 (ci->count <
3128 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3129
3130 memset(instance->pd_list, 0,
3131 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3132
3133 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3134
3135 instance->pd_list[pd_addr->deviceId].tid =
3136 pd_addr->deviceId;
3137 instance->pd_list[pd_addr->deviceId].driveType =
3138 pd_addr->scsiDevType;
3139 instance->pd_list[pd_addr->deviceId].driveState =
3140 MR_PD_STATE_SYSTEM;
3141 pd_addr++;
3142 }
3143 }
3144
3145 pci_free_consistent(instance->pdev,
3146 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3147 ci, ci_h);
3148 megasas_return_cmd(instance, cmd);
3149
3150 return ret;
3151 }
3152
3153 /*
3154 * megasas_get_ld_list_info - Returns FW's ld_list structure
3155 * @instance: Adapter soft state
3156 * @ld_list: ld_list structure
3157 *
3158 * Issues an internal command (DCMD) to get the FW's controller PD
3159 * list structure. This information is mainly used to find out SYSTEM
3160 * supported by the FW.
3161 */
3162 static int
3163 megasas_get_ld_list(struct megasas_instance *instance)
3164 {
3165 int ret = 0, ld_index = 0, ids = 0;
3166 struct megasas_cmd *cmd;
3167 struct megasas_dcmd_frame *dcmd;
3168 struct MR_LD_LIST *ci;
3169 dma_addr_t ci_h = 0;
3170
3171 cmd = megasas_get_cmd(instance);
3172
3173 if (!cmd) {
3174 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3175 return -ENOMEM;
3176 }
3177
3178 dcmd = &cmd->frame->dcmd;
3179
3180 ci = pci_alloc_consistent(instance->pdev,
3181 sizeof(struct MR_LD_LIST),
3182 &ci_h);
3183
3184 if (!ci) {
3185 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3186 megasas_return_cmd(instance, cmd);
3187 return -ENOMEM;
3188 }
3189
3190 memset(ci, 0, sizeof(*ci));
3191 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3192
3193 dcmd->cmd = MFI_CMD_DCMD;
3194 dcmd->cmd_status = 0xFF;
3195 dcmd->sge_count = 1;
3196 dcmd->flags = MFI_FRAME_DIR_READ;
3197 dcmd->timeout = 0;
3198 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3199 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3200 dcmd->sgl.sge32[0].phys_addr = ci_h;
3201 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3202 dcmd->pad_0 = 0;
3203
3204 if (!megasas_issue_polled(instance, cmd)) {
3205 ret = 0;
3206 } else {
3207 ret = -1;
3208 }
3209
3210 /* the following function will get the instance PD LIST */
3211
3212 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
3213 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3214
3215 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3216 if (ci->ldList[ld_index].state != 0) {
3217 ids = ci->ldList[ld_index].ref.targetId;
3218 instance->ld_ids[ids] =
3219 ci->ldList[ld_index].ref.targetId;
3220 }
3221 }
3222 }
3223
3224 pci_free_consistent(instance->pdev,
3225 sizeof(struct MR_LD_LIST),
3226 ci,
3227 ci_h);
3228
3229 megasas_return_cmd(instance, cmd);
3230 return ret;
3231 }
3232
3233 /**
3234 * megasas_get_controller_info - Returns FW's controller structure
3235 * @instance: Adapter soft state
3236 * @ctrl_info: Controller information structure
3237 *
3238 * Issues an internal command (DCMD) to get the FW's controller structure.
3239 * This information is mainly used to find out the maximum IO transfer per
3240 * command supported by the FW.
3241 */
3242 static int
3243 megasas_get_ctrl_info(struct megasas_instance *instance,
3244 struct megasas_ctrl_info *ctrl_info)
3245 {
3246 int ret = 0;
3247 struct megasas_cmd *cmd;
3248 struct megasas_dcmd_frame *dcmd;
3249 struct megasas_ctrl_info *ci;
3250 dma_addr_t ci_h = 0;
3251
3252 cmd = megasas_get_cmd(instance);
3253
3254 if (!cmd) {
3255 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3256 return -ENOMEM;
3257 }
3258
3259 dcmd = &cmd->frame->dcmd;
3260
3261 ci = pci_alloc_consistent(instance->pdev,
3262 sizeof(struct megasas_ctrl_info), &ci_h);
3263
3264 if (!ci) {
3265 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3266 megasas_return_cmd(instance, cmd);
3267 return -ENOMEM;
3268 }
3269
3270 memset(ci, 0, sizeof(*ci));
3271 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3272
3273 dcmd->cmd = MFI_CMD_DCMD;
3274 dcmd->cmd_status = 0xFF;
3275 dcmd->sge_count = 1;
3276 dcmd->flags = MFI_FRAME_DIR_READ;
3277 dcmd->timeout = 0;
3278 dcmd->pad_0 = 0;
3279 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3280 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3281 dcmd->sgl.sge32[0].phys_addr = ci_h;
3282 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3283
3284 if (!megasas_issue_polled(instance, cmd)) {
3285 ret = 0;
3286 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3287 } else {
3288 ret = -1;
3289 }
3290
3291 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3292 ci, ci_h);
3293
3294 megasas_return_cmd(instance, cmd);
3295 return ret;
3296 }
3297
3298 /**
3299 * megasas_issue_init_mfi - Initializes the FW
3300 * @instance: Adapter soft state
3301 *
3302 * Issues the INIT MFI cmd
3303 */
3304 static int
3305 megasas_issue_init_mfi(struct megasas_instance *instance)
3306 {
3307 u32 context;
3308
3309 struct megasas_cmd *cmd;
3310
3311 struct megasas_init_frame *init_frame;
3312 struct megasas_init_queue_info *initq_info;
3313 dma_addr_t init_frame_h;
3314 dma_addr_t initq_info_h;
3315
3316 /*
3317 * Prepare a init frame. Note the init frame points to queue info
3318 * structure. Each frame has SGL allocated after first 64 bytes. For
3319 * this frame - since we don't need any SGL - we use SGL's space as
3320 * queue info structure
3321 *
3322 * We will not get a NULL command below. We just created the pool.
3323 */
3324 cmd = megasas_get_cmd(instance);
3325
3326 init_frame = (struct megasas_init_frame *)cmd->frame;
3327 initq_info = (struct megasas_init_queue_info *)
3328 ((unsigned long)init_frame + 64);
3329
3330 init_frame_h = cmd->frame_phys_addr;
3331 initq_info_h = init_frame_h + 64;
3332
3333 context = init_frame->context;
3334 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3335 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3336 init_frame->context = context;
3337
3338 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3339 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3340
3341 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3342 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3343
3344 init_frame->cmd = MFI_CMD_INIT;
3345 init_frame->cmd_status = 0xFF;
3346 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3347
3348 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3349
3350 /*
3351 * disable the intr before firing the init frame to FW
3352 */
3353 instance->instancet->disable_intr(instance->reg_set);
3354
3355 /*
3356 * Issue the init frame in polled mode
3357 */
3358
3359 if (megasas_issue_polled(instance, cmd)) {
3360 printk(KERN_ERR "megasas: Failed to init firmware\n");
3361 megasas_return_cmd(instance, cmd);
3362 goto fail_fw_init;
3363 }
3364
3365 megasas_return_cmd(instance, cmd);
3366
3367 return 0;
3368
3369 fail_fw_init:
3370 return -EINVAL;
3371 }
3372
3373 /**
3374 * megasas_start_timer - Initializes a timer object
3375 * @instance: Adapter soft state
3376 * @timer: timer object to be initialized
3377 * @fn: timer function
3378 * @interval: time interval between timer function call
3379 */
3380 static inline void
3381 megasas_start_timer(struct megasas_instance *instance,
3382 struct timer_list *timer,
3383 void *fn, unsigned long interval)
3384 {
3385 init_timer(timer);
3386 timer->expires = jiffies + interval;
3387 timer->data = (unsigned long)instance;
3388 timer->function = fn;
3389 add_timer(timer);
3390 }
3391
3392 /**
3393 * megasas_io_completion_timer - Timer fn
3394 * @instance_addr: Address of adapter soft state
3395 *
3396 * Schedules tasklet for cmd completion
3397 * if poll_mode_io is set
3398 */
3399 static void
3400 megasas_io_completion_timer(unsigned long instance_addr)
3401 {
3402 struct megasas_instance *instance =
3403 (struct megasas_instance *)instance_addr;
3404
3405 if (atomic_read(&instance->fw_outstanding))
3406 tasklet_schedule(&instance->isr_tasklet);
3407
3408 /* Restart timer */
3409 if (poll_mode_io)
3410 mod_timer(&instance->io_completion_timer,
3411 jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL);
3412 }
3413
3414 static u32
3415 megasas_init_adapter_mfi(struct megasas_instance *instance)
3416 {
3417 struct megasas_register_set __iomem *reg_set;
3418 u32 context_sz;
3419 u32 reply_q_sz;
3420
3421 reg_set = instance->reg_set;
3422
3423 /*
3424 * Get various operational parameters from status register
3425 */
3426 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3427 /*
3428 * Reduce the max supported cmds by 1. This is to ensure that the
3429 * reply_q_sz (1 more than the max cmd that driver may send)
3430 * does not exceed max cmds that the FW can support
3431 */
3432 instance->max_fw_cmds = instance->max_fw_cmds-1;
3433 instance->max_mfi_cmds = instance->max_fw_cmds;
3434 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3435 0x10;
3436 /*
3437 * Create a pool of commands
3438 */
3439 if (megasas_alloc_cmds(instance))
3440 goto fail_alloc_cmds;
3441
3442 /*
3443 * Allocate memory for reply queue. Length of reply queue should
3444 * be _one_ more than the maximum commands handled by the firmware.
3445 *
3446 * Note: When FW completes commands, it places corresponding contex
3447 * values in this circular reply queue. This circular queue is a fairly
3448 * typical producer-consumer queue. FW is the producer (of completed
3449 * commands) and the driver is the consumer.
3450 */
3451 context_sz = sizeof(u32);
3452 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3453
3454 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3455 reply_q_sz,
3456 &instance->reply_queue_h);
3457
3458 if (!instance->reply_queue) {
3459 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3460 goto fail_reply_queue;
3461 }
3462
3463 if (megasas_issue_init_mfi(instance))
3464 goto fail_fw_init;
3465
3466 instance->fw_support_ieee = 0;
3467 instance->fw_support_ieee =
3468 (instance->instancet->read_fw_status_reg(reg_set) &
3469 0x04000000);
3470
3471 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3472 instance->fw_support_ieee);
3473
3474 if (instance->fw_support_ieee)
3475 instance->flag_ieee = 1;
3476
3477 return 0;
3478
3479 fail_fw_init:
3480
3481 pci_free_consistent(instance->pdev, reply_q_sz,
3482 instance->reply_queue, instance->reply_queue_h);
3483 fail_reply_queue:
3484 megasas_free_cmds(instance);
3485
3486 fail_alloc_cmds:
3487 return 1;
3488 }
3489
3490 /**
3491 * megasas_init_fw - Initializes the FW
3492 * @instance: Adapter soft state
3493 *
3494 * This is the main function for initializing firmware
3495 */
3496
3497 static int megasas_init_fw(struct megasas_instance *instance)
3498 {
3499 u32 max_sectors_1;
3500 u32 max_sectors_2;
3501 u32 tmp_sectors, msix_enable;
3502 struct megasas_register_set __iomem *reg_set;
3503 struct megasas_ctrl_info *ctrl_info;
3504 unsigned long bar_list;
3505 int i;
3506
3507 /* Find first memory bar */
3508 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3509 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3510 instance->base_addr = pci_resource_start(instance->pdev, instance->bar);
3511 if (pci_request_selected_regions(instance->pdev, instance->bar,
3512 "megasas: LSI")) {
3513 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3514 return -EBUSY;
3515 }
3516
3517 instance->reg_set = ioremap_nocache(instance->base_addr, 8192);
3518
3519 if (!instance->reg_set) {
3520 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3521 goto fail_ioremap;
3522 }
3523
3524 reg_set = instance->reg_set;
3525
3526 switch (instance->pdev->device) {
3527 case PCI_DEVICE_ID_LSI_FUSION:
3528 case PCI_DEVICE_ID_LSI_INVADER:
3529 instance->instancet = &megasas_instance_template_fusion;
3530 break;
3531 case PCI_DEVICE_ID_LSI_SAS1078R:
3532 case PCI_DEVICE_ID_LSI_SAS1078DE:
3533 instance->instancet = &megasas_instance_template_ppc;
3534 break;
3535 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3536 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3537 instance->instancet = &megasas_instance_template_gen2;
3538 break;
3539 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3540 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3541 instance->instancet = &megasas_instance_template_skinny;
3542 break;
3543 case PCI_DEVICE_ID_LSI_SAS1064R:
3544 case PCI_DEVICE_ID_DELL_PERC5:
3545 default:
3546 instance->instancet = &megasas_instance_template_xscale;
3547 break;
3548 }
3549
3550 /*
3551 * We expect the FW state to be READY
3552 */
3553 if (megasas_transition_to_ready(instance, 0))
3554 goto fail_ready_state;
3555
3556 /* Check if MSI-X is supported while in ready state */
3557 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3558 0x4000000) >> 0x1a;
3559 if (msix_enable && !msix_disable) {
3560 /* Check max MSI-X vectors */
3561 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3562 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3563 instance->msix_vectors = (readl(&instance->reg_set->
3564 outbound_scratch_pad_2
3565 ) & 0x1F) + 1;
3566 } else
3567 instance->msix_vectors = 1;
3568 /* Don't bother allocating more MSI-X vectors than cpus */
3569 instance->msix_vectors = min(instance->msix_vectors,
3570 (unsigned int)num_online_cpus());
3571 for (i = 0; i < instance->msix_vectors; i++)
3572 instance->msixentry[i].entry = i;
3573 i = pci_enable_msix(instance->pdev, instance->msixentry,
3574 instance->msix_vectors);
3575 if (i >= 0) {
3576 if (i) {
3577 if (!pci_enable_msix(instance->pdev,
3578 instance->msixentry, i))
3579 instance->msix_vectors = i;
3580 else
3581 instance->msix_vectors = 0;
3582 }
3583 } else
3584 instance->msix_vectors = 0;
3585 }
3586
3587 /* Get operational params, sge flags, send init cmd to controller */
3588 if (instance->instancet->init_adapter(instance))
3589 goto fail_init_adapter;
3590
3591 printk(KERN_ERR "megasas: INIT adapter done\n");
3592
3593 /** for passthrough
3594 * the following function will get the PD LIST.
3595 */
3596
3597 memset(instance->pd_list, 0 ,
3598 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3599 megasas_get_pd_list(instance);
3600
3601 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3602 megasas_get_ld_list(instance);
3603
3604 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3605
3606 /*
3607 * Compute the max allowed sectors per IO: The controller info has two
3608 * limits on max sectors. Driver should use the minimum of these two.
3609 *
3610 * 1 << stripe_sz_ops.min = max sectors per strip
3611 *
3612 * Note that older firmwares ( < FW ver 30) didn't report information
3613 * to calculate max_sectors_1. So the number ended up as zero always.
3614 */
3615 tmp_sectors = 0;
3616 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3617
3618 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3619 ctrl_info->max_strips_per_io;
3620 max_sectors_2 = ctrl_info->max_request_size;
3621
3622 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3623 instance->disableOnlineCtrlReset =
3624 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3625 }
3626
3627 instance->max_sectors_per_req = instance->max_num_sge *
3628 PAGE_SIZE / 512;
3629 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3630 instance->max_sectors_per_req = tmp_sectors;
3631
3632 kfree(ctrl_info);
3633
3634 /*
3635 * Setup tasklet for cmd completion
3636 */
3637
3638 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3639 (unsigned long)instance);
3640
3641 /* Initialize the cmd completion timer */
3642 if (poll_mode_io)
3643 megasas_start_timer(instance, &instance->io_completion_timer,
3644 megasas_io_completion_timer,
3645 MEGASAS_COMPLETION_TIMER_INTERVAL);
3646 return 0;
3647
3648 fail_init_adapter:
3649 fail_ready_state:
3650 iounmap(instance->reg_set);
3651
3652 fail_ioremap:
3653 pci_release_selected_regions(instance->pdev, instance->bar);
3654
3655 return -EINVAL;
3656 }
3657
3658 /**
3659 * megasas_release_mfi - Reverses the FW initialization
3660 * @intance: Adapter soft state
3661 */
3662 static void megasas_release_mfi(struct megasas_instance *instance)
3663 {
3664 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3665
3666 if (instance->reply_queue)
3667 pci_free_consistent(instance->pdev, reply_q_sz,
3668 instance->reply_queue, instance->reply_queue_h);
3669
3670 megasas_free_cmds(instance);
3671
3672 iounmap(instance->reg_set);
3673
3674 pci_release_selected_regions(instance->pdev, instance->bar);
3675 }
3676
3677 /**
3678 * megasas_get_seq_num - Gets latest event sequence numbers
3679 * @instance: Adapter soft state
3680 * @eli: FW event log sequence numbers information
3681 *
3682 * FW maintains a log of all events in a non-volatile area. Upper layers would
3683 * usually find out the latest sequence number of the events, the seq number at
3684 * the boot etc. They would "read" all the events below the latest seq number
3685 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3686 * number), they would subsribe to AEN (asynchronous event notification) and
3687 * wait for the events to happen.
3688 */
3689 static int
3690 megasas_get_seq_num(struct megasas_instance *instance,
3691 struct megasas_evt_log_info *eli)
3692 {
3693 struct megasas_cmd *cmd;
3694 struct megasas_dcmd_frame *dcmd;
3695 struct megasas_evt_log_info *el_info;
3696 dma_addr_t el_info_h = 0;
3697
3698 cmd = megasas_get_cmd(instance);
3699
3700 if (!cmd) {
3701 return -ENOMEM;
3702 }
3703
3704 dcmd = &cmd->frame->dcmd;
3705 el_info = pci_alloc_consistent(instance->pdev,
3706 sizeof(struct megasas_evt_log_info),
3707 &el_info_h);
3708
3709 if (!el_info) {
3710 megasas_return_cmd(instance, cmd);
3711 return -ENOMEM;
3712 }
3713
3714 memset(el_info, 0, sizeof(*el_info));
3715 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3716
3717 dcmd->cmd = MFI_CMD_DCMD;
3718 dcmd->cmd_status = 0x0;
3719 dcmd->sge_count = 1;
3720 dcmd->flags = MFI_FRAME_DIR_READ;
3721 dcmd->timeout = 0;
3722 dcmd->pad_0 = 0;
3723 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3724 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3725 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3726 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3727
3728 megasas_issue_blocked_cmd(instance, cmd);
3729
3730 /*
3731 * Copy the data back into callers buffer
3732 */
3733 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3734
3735 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3736 el_info, el_info_h);
3737
3738 megasas_return_cmd(instance, cmd);
3739
3740 return 0;
3741 }
3742
3743 /**
3744 * megasas_register_aen - Registers for asynchronous event notification
3745 * @instance: Adapter soft state
3746 * @seq_num: The starting sequence number
3747 * @class_locale: Class of the event
3748 *
3749 * This function subscribes for AEN for events beyond the @seq_num. It requests
3750 * to be notified if and only if the event is of type @class_locale
3751 */
3752 static int
3753 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3754 u32 class_locale_word)
3755 {
3756 int ret_val;
3757 struct megasas_cmd *cmd;
3758 struct megasas_dcmd_frame *dcmd;
3759 union megasas_evt_class_locale curr_aen;
3760 union megasas_evt_class_locale prev_aen;
3761
3762 /*
3763 * If there an AEN pending already (aen_cmd), check if the
3764 * class_locale of that pending AEN is inclusive of the new
3765 * AEN request we currently have. If it is, then we don't have
3766 * to do anything. In other words, whichever events the current
3767 * AEN request is subscribing to, have already been subscribed
3768 * to.
3769 *
3770 * If the old_cmd is _not_ inclusive, then we have to abort
3771 * that command, form a class_locale that is superset of both
3772 * old and current and re-issue to the FW
3773 */
3774
3775 curr_aen.word = class_locale_word;
3776
3777 if (instance->aen_cmd) {
3778
3779 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3780
3781 /*
3782 * A class whose enum value is smaller is inclusive of all
3783 * higher values. If a PROGRESS (= -1) was previously
3784 * registered, then a new registration requests for higher
3785 * classes need not be sent to FW. They are automatically
3786 * included.
3787 *
3788 * Locale numbers don't have such hierarchy. They are bitmap
3789 * values
3790 */
3791 if ((prev_aen.members.class <= curr_aen.members.class) &&
3792 !((prev_aen.members.locale & curr_aen.members.locale) ^
3793 curr_aen.members.locale)) {
3794 /*
3795 * Previously issued event registration includes
3796 * current request. Nothing to do.
3797 */
3798 return 0;
3799 } else {
3800 curr_aen.members.locale |= prev_aen.members.locale;
3801
3802 if (prev_aen.members.class < curr_aen.members.class)
3803 curr_aen.members.class = prev_aen.members.class;
3804
3805 instance->aen_cmd->abort_aen = 1;
3806 ret_val = megasas_issue_blocked_abort_cmd(instance,
3807 instance->
3808 aen_cmd);
3809
3810 if (ret_val) {
3811 printk(KERN_DEBUG "megasas: Failed to abort "
3812 "previous AEN command\n");
3813 return ret_val;
3814 }
3815 }
3816 }
3817
3818 cmd = megasas_get_cmd(instance);
3819
3820 if (!cmd)
3821 return -ENOMEM;
3822
3823 dcmd = &cmd->frame->dcmd;
3824
3825 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3826
3827 /*
3828 * Prepare DCMD for aen registration
3829 */
3830 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3831
3832 dcmd->cmd = MFI_CMD_DCMD;
3833 dcmd->cmd_status = 0x0;
3834 dcmd->sge_count = 1;
3835 dcmd->flags = MFI_FRAME_DIR_READ;
3836 dcmd->timeout = 0;
3837 dcmd->pad_0 = 0;
3838 instance->last_seq_num = seq_num;
3839 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3840 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3841 dcmd->mbox.w[0] = seq_num;
3842 dcmd->mbox.w[1] = curr_aen.word;
3843 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3844 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3845
3846 if (instance->aen_cmd != NULL) {
3847 megasas_return_cmd(instance, cmd);
3848 return 0;
3849 }
3850
3851 /*
3852 * Store reference to the cmd used to register for AEN. When an
3853 * application wants us to register for AEN, we have to abort this
3854 * cmd and re-register with a new EVENT LOCALE supplied by that app
3855 */
3856 instance->aen_cmd = cmd;
3857
3858 /*
3859 * Issue the aen registration frame
3860 */
3861 instance->instancet->issue_dcmd(instance, cmd);
3862
3863 return 0;
3864 }
3865
3866 /**
3867 * megasas_start_aen - Subscribes to AEN during driver load time
3868 * @instance: Adapter soft state
3869 */
3870 static int megasas_start_aen(struct megasas_instance *instance)
3871 {
3872 struct megasas_evt_log_info eli;
3873 union megasas_evt_class_locale class_locale;
3874
3875 /*
3876 * Get the latest sequence number from FW
3877 */
3878 memset(&eli, 0, sizeof(eli));
3879
3880 if (megasas_get_seq_num(instance, &eli))
3881 return -1;
3882
3883 /*
3884 * Register AEN with FW for latest sequence number plus 1
3885 */
3886 class_locale.members.reserved = 0;
3887 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3888 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3889
3890 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3891 class_locale.word);
3892 }
3893
3894 /**
3895 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3896 * @instance: Adapter soft state
3897 */
3898 static int megasas_io_attach(struct megasas_instance *instance)
3899 {
3900 struct Scsi_Host *host = instance->host;
3901
3902 /*
3903 * Export parameters required by SCSI mid-layer
3904 */
3905 host->irq = instance->pdev->irq;
3906 host->unique_id = instance->unique_id;
3907 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3908 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3909 host->can_queue =
3910 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3911 } else
3912 host->can_queue =
3913 instance->max_fw_cmds - MEGASAS_INT_CMDS;
3914 host->this_id = instance->init_id;
3915 host->sg_tablesize = instance->max_num_sge;
3916
3917 if (instance->fw_support_ieee)
3918 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
3919
3920 /*
3921 * Check if the module parameter value for max_sectors can be used
3922 */
3923 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3924 instance->max_sectors_per_req = max_sectors;
3925 else {
3926 if (max_sectors) {
3927 if (((instance->pdev->device ==
3928 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3929 (instance->pdev->device ==
3930 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3931 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3932 instance->max_sectors_per_req = max_sectors;
3933 } else {
3934 printk(KERN_INFO "megasas: max_sectors should be > 0"
3935 "and <= %d (or < 1MB for GEN2 controller)\n",
3936 instance->max_sectors_per_req);
3937 }
3938 }
3939 }
3940
3941 host->max_sectors = instance->max_sectors_per_req;
3942 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
3943 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3944 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3945 host->max_lun = MEGASAS_MAX_LUN;
3946 host->max_cmd_len = 16;
3947
3948 /* Fusion only supports host reset */
3949 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3950 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3951 host->hostt->eh_device_reset_handler = NULL;
3952 host->hostt->eh_bus_reset_handler = NULL;
3953 }
3954
3955 /*
3956 * Notify the mid-layer about the new controller
3957 */
3958 if (scsi_add_host(host, &instance->pdev->dev)) {
3959 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3960 return -ENODEV;
3961 }
3962
3963 /*
3964 * Trigger SCSI to scan our drives
3965 */
3966 scsi_scan_host(host);
3967 return 0;
3968 }
3969
3970 static int
3971 megasas_set_dma_mask(struct pci_dev *pdev)
3972 {
3973 /*
3974 * All our contollers are capable of performing 64-bit DMA
3975 */
3976 if (IS_DMA64) {
3977 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
3978
3979 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3980 goto fail_set_dma_mask;
3981 }
3982 } else {
3983 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3984 goto fail_set_dma_mask;
3985 }
3986 return 0;
3987
3988 fail_set_dma_mask:
3989 return 1;
3990 }
3991
3992 /**
3993 * megasas_probe_one - PCI hotplug entry point
3994 * @pdev: PCI device structure
3995 * @id: PCI ids of supported hotplugged adapter
3996 */
3997 static int __devinit
3998 megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
3999 {
4000 int rval, pos, i, j;
4001 struct Scsi_Host *host;
4002 struct megasas_instance *instance;
4003 u16 control = 0;
4004
4005 /* Reset MSI-X in the kdump kernel */
4006 if (reset_devices) {
4007 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
4008 if (pos) {
4009 pci_read_config_word(pdev, msi_control_reg(pos),
4010 &control);
4011 if (control & PCI_MSIX_FLAGS_ENABLE) {
4012 dev_info(&pdev->dev, "resetting MSI-X\n");
4013 pci_write_config_word(pdev,
4014 msi_control_reg(pos),
4015 control &
4016 ~PCI_MSIX_FLAGS_ENABLE);
4017 }
4018 }
4019 }
4020
4021 /*
4022 * Announce PCI information
4023 */
4024 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4025 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4026 pdev->subsystem_device);
4027
4028 printk("bus %d:slot %d:func %d\n",
4029 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4030
4031 /*
4032 * PCI prepping: enable device set bus mastering and dma mask
4033 */
4034 rval = pci_enable_device_mem(pdev);
4035
4036 if (rval) {
4037 return rval;
4038 }
4039
4040 pci_set_master(pdev);
4041
4042 if (megasas_set_dma_mask(pdev))
4043 goto fail_set_dma_mask;
4044
4045 host = scsi_host_alloc(&megasas_template,
4046 sizeof(struct megasas_instance));
4047
4048 if (!host) {
4049 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4050 goto fail_alloc_instance;
4051 }
4052
4053 instance = (struct megasas_instance *)host->hostdata;
4054 memset(instance, 0, sizeof(*instance));
4055 atomic_set( &instance->fw_reset_no_pci_access, 0 );
4056 instance->pdev = pdev;
4057
4058 switch (instance->pdev->device) {
4059 case PCI_DEVICE_ID_LSI_FUSION:
4060 case PCI_DEVICE_ID_LSI_INVADER:
4061 {
4062 struct fusion_context *fusion;
4063
4064 instance->ctrl_context =
4065 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4066 if (!instance->ctrl_context) {
4067 printk(KERN_DEBUG "megasas: Failed to allocate "
4068 "memory for Fusion context info\n");
4069 goto fail_alloc_dma_buf;
4070 }
4071 fusion = instance->ctrl_context;
4072 INIT_LIST_HEAD(&fusion->cmd_pool);
4073 spin_lock_init(&fusion->cmd_pool_lock);
4074 }
4075 break;
4076 default: /* For all other supported controllers */
4077
4078 instance->producer =
4079 pci_alloc_consistent(pdev, sizeof(u32),
4080 &instance->producer_h);
4081 instance->consumer =
4082 pci_alloc_consistent(pdev, sizeof(u32),
4083 &instance->consumer_h);
4084
4085 if (!instance->producer || !instance->consumer) {
4086 printk(KERN_DEBUG "megasas: Failed to allocate"
4087 "memory for producer, consumer\n");
4088 goto fail_alloc_dma_buf;
4089 }
4090
4091 *instance->producer = 0;
4092 *instance->consumer = 0;
4093 break;
4094 }
4095
4096 megasas_poll_wait_aen = 0;
4097 instance->flag_ieee = 0;
4098 instance->ev = NULL;
4099 instance->issuepend_done = 1;
4100 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4101 megasas_poll_wait_aen = 0;
4102
4103 instance->evt_detail = pci_alloc_consistent(pdev,
4104 sizeof(struct
4105 megasas_evt_detail),
4106 &instance->evt_detail_h);
4107
4108 if (!instance->evt_detail) {
4109 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4110 "event detail structure\n");
4111 goto fail_alloc_dma_buf;
4112 }
4113
4114 /*
4115 * Initialize locks and queues
4116 */
4117 INIT_LIST_HEAD(&instance->cmd_pool);
4118 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4119
4120 atomic_set(&instance->fw_outstanding,0);
4121
4122 init_waitqueue_head(&instance->int_cmd_wait_q);
4123 init_waitqueue_head(&instance->abort_cmd_wait_q);
4124
4125 spin_lock_init(&instance->cmd_pool_lock);
4126 spin_lock_init(&instance->hba_lock);
4127 spin_lock_init(&instance->completion_lock);
4128 spin_lock_init(&poll_aen_lock);
4129
4130 mutex_init(&instance->aen_mutex);
4131 mutex_init(&instance->reset_mutex);
4132
4133 /*
4134 * Initialize PCI related and misc parameters
4135 */
4136 instance->host = host;
4137 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4138 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4139
4140 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4141 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4142 instance->flag_ieee = 1;
4143 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4144 } else
4145 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4146
4147 megasas_dbg_lvl = 0;
4148 instance->flag = 0;
4149 instance->unload = 1;
4150 instance->last_time = 0;
4151 instance->disableOnlineCtrlReset = 1;
4152
4153 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4154 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4155 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4156 else
4157 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4158
4159 /*
4160 * Initialize MFI Firmware
4161 */
4162 if (megasas_init_fw(instance))
4163 goto fail_init_mfi;
4164
4165 /*
4166 * Register IRQ
4167 */
4168 if (instance->msix_vectors) {
4169 for (i = 0 ; i < instance->msix_vectors; i++) {
4170 instance->irq_context[i].instance = instance;
4171 instance->irq_context[i].MSIxIndex = i;
4172 if (request_irq(instance->msixentry[i].vector,
4173 instance->instancet->service_isr, 0,
4174 "megasas",
4175 &instance->irq_context[i])) {
4176 printk(KERN_DEBUG "megasas: Failed to "
4177 "register IRQ for vector %d.\n", i);
4178 for (j = 0 ; j < i ; j++)
4179 free_irq(
4180 instance->msixentry[j].vector,
4181 &instance->irq_context[j]);
4182 goto fail_irq;
4183 }
4184 }
4185 } else {
4186 instance->irq_context[0].instance = instance;
4187 instance->irq_context[0].MSIxIndex = 0;
4188 if (request_irq(pdev->irq, instance->instancet->service_isr,
4189 IRQF_SHARED, "megasas",
4190 &instance->irq_context[0])) {
4191 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4192 goto fail_irq;
4193 }
4194 }
4195
4196 instance->instancet->enable_intr(instance->reg_set);
4197
4198 /*
4199 * Store instance in PCI softstate
4200 */
4201 pci_set_drvdata(pdev, instance);
4202
4203 /*
4204 * Add this controller to megasas_mgmt_info structure so that it
4205 * can be exported to management applications
4206 */
4207 megasas_mgmt_info.count++;
4208 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4209 megasas_mgmt_info.max_index++;
4210
4211 /*
4212 * Register with SCSI mid-layer
4213 */
4214 if (megasas_io_attach(instance))
4215 goto fail_io_attach;
4216
4217 instance->unload = 0;
4218
4219 /*
4220 * Initiate AEN (Asynchronous Event Notification)
4221 */
4222 if (megasas_start_aen(instance)) {
4223 printk(KERN_DEBUG "megasas: start aen failed\n");
4224 goto fail_start_aen;
4225 }
4226
4227 return 0;
4228
4229 fail_start_aen:
4230 fail_io_attach:
4231 megasas_mgmt_info.count--;
4232 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4233 megasas_mgmt_info.max_index--;
4234
4235 pci_set_drvdata(pdev, NULL);
4236 instance->instancet->disable_intr(instance->reg_set);
4237 if (instance->msix_vectors)
4238 for (i = 0 ; i < instance->msix_vectors; i++)
4239 free_irq(instance->msixentry[i].vector,
4240 &instance->irq_context[i]);
4241 else
4242 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4243 fail_irq:
4244 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4245 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4246 megasas_release_fusion(instance);
4247 else
4248 megasas_release_mfi(instance);
4249 fail_init_mfi:
4250 if (instance->msix_vectors)
4251 pci_disable_msix(instance->pdev);
4252 fail_alloc_dma_buf:
4253 if (instance->evt_detail)
4254 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4255 instance->evt_detail,
4256 instance->evt_detail_h);
4257
4258 if (instance->producer)
4259 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4260 instance->producer_h);
4261 if (instance->consumer)
4262 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4263 instance->consumer_h);
4264 scsi_host_put(host);
4265
4266 fail_alloc_instance:
4267 fail_set_dma_mask:
4268 pci_disable_device(pdev);
4269
4270 return -ENODEV;
4271 }
4272
4273 /**
4274 * megasas_flush_cache - Requests FW to flush all its caches
4275 * @instance: Adapter soft state
4276 */
4277 static void megasas_flush_cache(struct megasas_instance *instance)
4278 {
4279 struct megasas_cmd *cmd;
4280 struct megasas_dcmd_frame *dcmd;
4281
4282 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4283 return;
4284
4285 cmd = megasas_get_cmd(instance);
4286
4287 if (!cmd)
4288 return;
4289
4290 dcmd = &cmd->frame->dcmd;
4291
4292 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4293
4294 dcmd->cmd = MFI_CMD_DCMD;
4295 dcmd->cmd_status = 0x0;
4296 dcmd->sge_count = 0;
4297 dcmd->flags = MFI_FRAME_DIR_NONE;
4298 dcmd->timeout = 0;
4299 dcmd->pad_0 = 0;
4300 dcmd->data_xfer_len = 0;
4301 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4302 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4303
4304 megasas_issue_blocked_cmd(instance, cmd);
4305
4306 megasas_return_cmd(instance, cmd);
4307
4308 return;
4309 }
4310
4311 /**
4312 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4313 * @instance: Adapter soft state
4314 * @opcode: Shutdown/Hibernate
4315 */
4316 static void megasas_shutdown_controller(struct megasas_instance *instance,
4317 u32 opcode)
4318 {
4319 struct megasas_cmd *cmd;
4320 struct megasas_dcmd_frame *dcmd;
4321
4322 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4323 return;
4324
4325 cmd = megasas_get_cmd(instance);
4326
4327 if (!cmd)
4328 return;
4329
4330 if (instance->aen_cmd)
4331 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4332 if (instance->map_update_cmd)
4333 megasas_issue_blocked_abort_cmd(instance,
4334 instance->map_update_cmd);
4335 dcmd = &cmd->frame->dcmd;
4336
4337 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4338
4339 dcmd->cmd = MFI_CMD_DCMD;
4340 dcmd->cmd_status = 0x0;
4341 dcmd->sge_count = 0;
4342 dcmd->flags = MFI_FRAME_DIR_NONE;
4343 dcmd->timeout = 0;
4344 dcmd->pad_0 = 0;
4345 dcmd->data_xfer_len = 0;
4346 dcmd->opcode = opcode;
4347
4348 megasas_issue_blocked_cmd(instance, cmd);
4349
4350 megasas_return_cmd(instance, cmd);
4351
4352 return;
4353 }
4354
4355 #ifdef CONFIG_PM
4356 /**
4357 * megasas_suspend - driver suspend entry point
4358 * @pdev: PCI device structure
4359 * @state: PCI power state to suspend routine
4360 */
4361 static int
4362 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4363 {
4364 struct Scsi_Host *host;
4365 struct megasas_instance *instance;
4366 int i;
4367
4368 instance = pci_get_drvdata(pdev);
4369 host = instance->host;
4370 instance->unload = 1;
4371
4372 if (poll_mode_io)
4373 del_timer_sync(&instance->io_completion_timer);
4374
4375 megasas_flush_cache(instance);
4376 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4377
4378 /* cancel the delayed work if this work still in queue */
4379 if (instance->ev != NULL) {
4380 struct megasas_aen_event *ev = instance->ev;
4381 cancel_delayed_work_sync(
4382 (struct delayed_work *)&ev->hotplug_work);
4383 instance->ev = NULL;
4384 }
4385
4386 tasklet_kill(&instance->isr_tasklet);
4387
4388 pci_set_drvdata(instance->pdev, instance);
4389 instance->instancet->disable_intr(instance->reg_set);
4390
4391 if (instance->msix_vectors)
4392 for (i = 0 ; i < instance->msix_vectors; i++)
4393 free_irq(instance->msixentry[i].vector,
4394 &instance->irq_context[i]);
4395 else
4396 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4397 if (instance->msix_vectors)
4398 pci_disable_msix(instance->pdev);
4399
4400 pci_save_state(pdev);
4401 pci_disable_device(pdev);
4402
4403 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4404
4405 return 0;
4406 }
4407
4408 /**
4409 * megasas_resume- driver resume entry point
4410 * @pdev: PCI device structure
4411 */
4412 static int
4413 megasas_resume(struct pci_dev *pdev)
4414 {
4415 int rval, i, j;
4416 struct Scsi_Host *host;
4417 struct megasas_instance *instance;
4418
4419 instance = pci_get_drvdata(pdev);
4420 host = instance->host;
4421 pci_set_power_state(pdev, PCI_D0);
4422 pci_enable_wake(pdev, PCI_D0, 0);
4423 pci_restore_state(pdev);
4424
4425 /*
4426 * PCI prepping: enable device set bus mastering and dma mask
4427 */
4428 rval = pci_enable_device_mem(pdev);
4429
4430 if (rval) {
4431 printk(KERN_ERR "megasas: Enable device failed\n");
4432 return rval;
4433 }
4434
4435 pci_set_master(pdev);
4436
4437 if (megasas_set_dma_mask(pdev))
4438 goto fail_set_dma_mask;
4439
4440 /*
4441 * Initialize MFI Firmware
4442 */
4443
4444 atomic_set(&instance->fw_outstanding, 0);
4445
4446 /*
4447 * We expect the FW state to be READY
4448 */
4449 if (megasas_transition_to_ready(instance, 0))
4450 goto fail_ready_state;
4451
4452 /* Now re-enable MSI-X */
4453 if (instance->msix_vectors)
4454 pci_enable_msix(instance->pdev, instance->msixentry,
4455 instance->msix_vectors);
4456
4457 switch (instance->pdev->device) {
4458 case PCI_DEVICE_ID_LSI_FUSION:
4459 case PCI_DEVICE_ID_LSI_INVADER:
4460 {
4461 megasas_reset_reply_desc(instance);
4462 if (megasas_ioc_init_fusion(instance)) {
4463 megasas_free_cmds(instance);
4464 megasas_free_cmds_fusion(instance);
4465 goto fail_init_mfi;
4466 }
4467 if (!megasas_get_map_info(instance))
4468 megasas_sync_map_info(instance);
4469 }
4470 break;
4471 default:
4472 *instance->producer = 0;
4473 *instance->consumer = 0;
4474 if (megasas_issue_init_mfi(instance))
4475 goto fail_init_mfi;
4476 break;
4477 }
4478
4479 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4480 (unsigned long)instance);
4481
4482 /*
4483 * Register IRQ
4484 */
4485 if (instance->msix_vectors) {
4486 for (i = 0 ; i < instance->msix_vectors; i++) {
4487 instance->irq_context[i].instance = instance;
4488 instance->irq_context[i].MSIxIndex = i;
4489 if (request_irq(instance->msixentry[i].vector,
4490 instance->instancet->service_isr, 0,
4491 "megasas",
4492 &instance->irq_context[i])) {
4493 printk(KERN_DEBUG "megasas: Failed to "
4494 "register IRQ for vector %d.\n", i);
4495 for (j = 0 ; j < i ; j++)
4496 free_irq(
4497 instance->msixentry[j].vector,
4498 &instance->irq_context[j]);
4499 goto fail_irq;
4500 }
4501 }
4502 } else {
4503 instance->irq_context[0].instance = instance;
4504 instance->irq_context[0].MSIxIndex = 0;
4505 if (request_irq(pdev->irq, instance->instancet->service_isr,
4506 IRQF_SHARED, "megasas",
4507 &instance->irq_context[0])) {
4508 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4509 goto fail_irq;
4510 }
4511 }
4512
4513 instance->instancet->enable_intr(instance->reg_set);
4514
4515 /* Initialize the cmd completion timer */
4516 if (poll_mode_io)
4517 megasas_start_timer(instance, &instance->io_completion_timer,
4518 megasas_io_completion_timer,
4519 MEGASAS_COMPLETION_TIMER_INTERVAL);
4520 instance->unload = 0;
4521
4522 /*
4523 * Initiate AEN (Asynchronous Event Notification)
4524 */
4525 if (megasas_start_aen(instance))
4526 printk(KERN_ERR "megasas: Start AEN failed\n");
4527
4528 return 0;
4529
4530 fail_irq:
4531 fail_init_mfi:
4532 if (instance->evt_detail)
4533 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4534 instance->evt_detail,
4535 instance->evt_detail_h);
4536
4537 if (instance->producer)
4538 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4539 instance->producer_h);
4540 if (instance->consumer)
4541 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4542 instance->consumer_h);
4543 scsi_host_put(host);
4544
4545 fail_set_dma_mask:
4546 fail_ready_state:
4547
4548 pci_disable_device(pdev);
4549
4550 return -ENODEV;
4551 }
4552 #else
4553 #define megasas_suspend NULL
4554 #define megasas_resume NULL
4555 #endif
4556
4557 /**
4558 * megasas_detach_one - PCI hot"un"plug entry point
4559 * @pdev: PCI device structure
4560 */
4561 static void __devexit megasas_detach_one(struct pci_dev *pdev)
4562 {
4563 int i;
4564 struct Scsi_Host *host;
4565 struct megasas_instance *instance;
4566 struct fusion_context *fusion;
4567
4568 instance = pci_get_drvdata(pdev);
4569 instance->unload = 1;
4570 host = instance->host;
4571 fusion = instance->ctrl_context;
4572
4573 if (poll_mode_io)
4574 del_timer_sync(&instance->io_completion_timer);
4575
4576 scsi_remove_host(instance->host);
4577 megasas_flush_cache(instance);
4578 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4579
4580 /* cancel the delayed work if this work still in queue*/
4581 if (instance->ev != NULL) {
4582 struct megasas_aen_event *ev = instance->ev;
4583 cancel_delayed_work_sync(
4584 (struct delayed_work *)&ev->hotplug_work);
4585 instance->ev = NULL;
4586 }
4587
4588 tasklet_kill(&instance->isr_tasklet);
4589
4590 /*
4591 * Take the instance off the instance array. Note that we will not
4592 * decrement the max_index. We let this array be sparse array
4593 */
4594 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4595 if (megasas_mgmt_info.instance[i] == instance) {
4596 megasas_mgmt_info.count--;
4597 megasas_mgmt_info.instance[i] = NULL;
4598
4599 break;
4600 }
4601 }
4602
4603 pci_set_drvdata(instance->pdev, NULL);
4604
4605 instance->instancet->disable_intr(instance->reg_set);
4606
4607 if (instance->msix_vectors)
4608 for (i = 0 ; i < instance->msix_vectors; i++)
4609 free_irq(instance->msixentry[i].vector,
4610 &instance->irq_context[i]);
4611 else
4612 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4613 if (instance->msix_vectors)
4614 pci_disable_msix(instance->pdev);
4615
4616 switch (instance->pdev->device) {
4617 case PCI_DEVICE_ID_LSI_FUSION:
4618 case PCI_DEVICE_ID_LSI_INVADER:
4619 megasas_release_fusion(instance);
4620 for (i = 0; i < 2 ; i++)
4621 if (fusion->ld_map[i])
4622 dma_free_coherent(&instance->pdev->dev,
4623 fusion->map_sz,
4624 fusion->ld_map[i],
4625 fusion->
4626 ld_map_phys[i]);
4627 kfree(instance->ctrl_context);
4628 break;
4629 default:
4630 megasas_release_mfi(instance);
4631 pci_free_consistent(pdev,
4632 sizeof(struct megasas_evt_detail),
4633 instance->evt_detail,
4634 instance->evt_detail_h);
4635 pci_free_consistent(pdev, sizeof(u32),
4636 instance->producer,
4637 instance->producer_h);
4638 pci_free_consistent(pdev, sizeof(u32),
4639 instance->consumer,
4640 instance->consumer_h);
4641 break;
4642 }
4643
4644 scsi_host_put(host);
4645
4646 pci_set_drvdata(pdev, NULL);
4647
4648 pci_disable_device(pdev);
4649
4650 return;
4651 }
4652
4653 /**
4654 * megasas_shutdown - Shutdown entry point
4655 * @device: Generic device structure
4656 */
4657 static void megasas_shutdown(struct pci_dev *pdev)
4658 {
4659 int i;
4660 struct megasas_instance *instance = pci_get_drvdata(pdev);
4661
4662 instance->unload = 1;
4663 megasas_flush_cache(instance);
4664 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4665 instance->instancet->disable_intr(instance->reg_set);
4666 if (instance->msix_vectors)
4667 for (i = 0 ; i < instance->msix_vectors; i++)
4668 free_irq(instance->msixentry[i].vector,
4669 &instance->irq_context[i]);
4670 else
4671 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4672 if (instance->msix_vectors)
4673 pci_disable_msix(instance->pdev);
4674 }
4675
4676 /**
4677 * megasas_mgmt_open - char node "open" entry point
4678 */
4679 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4680 {
4681 /*
4682 * Allow only those users with admin rights
4683 */
4684 if (!capable(CAP_SYS_ADMIN))
4685 return -EACCES;
4686
4687 return 0;
4688 }
4689
4690 /**
4691 * megasas_mgmt_fasync - Async notifier registration from applications
4692 *
4693 * This function adds the calling process to a driver global queue. When an
4694 * event occurs, SIGIO will be sent to all processes in this queue.
4695 */
4696 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4697 {
4698 int rc;
4699
4700 mutex_lock(&megasas_async_queue_mutex);
4701
4702 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4703
4704 mutex_unlock(&megasas_async_queue_mutex);
4705
4706 if (rc >= 0) {
4707 /* For sanity check when we get ioctl */
4708 filep->private_data = filep;
4709 return 0;
4710 }
4711
4712 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4713
4714 return rc;
4715 }
4716
4717 /**
4718 * megasas_mgmt_poll - char node "poll" entry point
4719 * */
4720 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4721 {
4722 unsigned int mask;
4723 unsigned long flags;
4724 poll_wait(file, &megasas_poll_wait, wait);
4725 spin_lock_irqsave(&poll_aen_lock, flags);
4726 if (megasas_poll_wait_aen)
4727 mask = (POLLIN | POLLRDNORM);
4728 else
4729 mask = 0;
4730 spin_unlock_irqrestore(&poll_aen_lock, flags);
4731 return mask;
4732 }
4733
4734 /**
4735 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4736 * @instance: Adapter soft state
4737 * @argp: User's ioctl packet
4738 */
4739 static int
4740 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4741 struct megasas_iocpacket __user * user_ioc,
4742 struct megasas_iocpacket *ioc)
4743 {
4744 struct megasas_sge32 *kern_sge32;
4745 struct megasas_cmd *cmd;
4746 void *kbuff_arr[MAX_IOCTL_SGE];
4747 dma_addr_t buf_handle = 0;
4748 int error = 0, i;
4749 void *sense = NULL;
4750 dma_addr_t sense_handle;
4751 unsigned long *sense_ptr;
4752
4753 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4754
4755 if (ioc->sge_count > MAX_IOCTL_SGE) {
4756 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4757 ioc->sge_count, MAX_IOCTL_SGE);
4758 return -EINVAL;
4759 }
4760
4761 cmd = megasas_get_cmd(instance);
4762 if (!cmd) {
4763 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4764 return -ENOMEM;
4765 }
4766
4767 /*
4768 * User's IOCTL packet has 2 frames (maximum). Copy those two
4769 * frames into our cmd's frames. cmd->frame's context will get
4770 * overwritten when we copy from user's frames. So set that value
4771 * alone separately
4772 */
4773 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4774 cmd->frame->hdr.context = cmd->index;
4775 cmd->frame->hdr.pad_0 = 0;
4776
4777 /*
4778 * The management interface between applications and the fw uses
4779 * MFI frames. E.g, RAID configuration changes, LD property changes
4780 * etc are accomplishes through different kinds of MFI frames. The
4781 * driver needs to care only about substituting user buffers with
4782 * kernel buffers in SGLs. The location of SGL is embedded in the
4783 * struct iocpacket itself.
4784 */
4785 kern_sge32 = (struct megasas_sge32 *)
4786 ((unsigned long)cmd->frame + ioc->sgl_off);
4787
4788 /*
4789 * For each user buffer, create a mirror buffer and copy in
4790 */
4791 for (i = 0; i < ioc->sge_count; i++) {
4792 if (!ioc->sgl[i].iov_len)
4793 continue;
4794
4795 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
4796 ioc->sgl[i].iov_len,
4797 &buf_handle, GFP_KERNEL);
4798 if (!kbuff_arr[i]) {
4799 printk(KERN_DEBUG "megasas: Failed to alloc "
4800 "kernel SGL buffer for IOCTL \n");
4801 error = -ENOMEM;
4802 goto out;
4803 }
4804
4805 /*
4806 * We don't change the dma_coherent_mask, so
4807 * pci_alloc_consistent only returns 32bit addresses
4808 */
4809 kern_sge32[i].phys_addr = (u32) buf_handle;
4810 kern_sge32[i].length = ioc->sgl[i].iov_len;
4811
4812 /*
4813 * We created a kernel buffer corresponding to the
4814 * user buffer. Now copy in from the user buffer
4815 */
4816 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4817 (u32) (ioc->sgl[i].iov_len))) {
4818 error = -EFAULT;
4819 goto out;
4820 }
4821 }
4822
4823 if (ioc->sense_len) {
4824 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4825 &sense_handle, GFP_KERNEL);
4826 if (!sense) {
4827 error = -ENOMEM;
4828 goto out;
4829 }
4830
4831 sense_ptr =
4832 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
4833 *sense_ptr = sense_handle;
4834 }
4835
4836 /*
4837 * Set the sync_cmd flag so that the ISR knows not to complete this
4838 * cmd to the SCSI mid-layer
4839 */
4840 cmd->sync_cmd = 1;
4841 megasas_issue_blocked_cmd(instance, cmd);
4842 cmd->sync_cmd = 0;
4843
4844 /*
4845 * copy out the kernel buffers to user buffers
4846 */
4847 for (i = 0; i < ioc->sge_count; i++) {
4848 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4849 ioc->sgl[i].iov_len)) {
4850 error = -EFAULT;
4851 goto out;
4852 }
4853 }
4854
4855 /*
4856 * copy out the sense
4857 */
4858 if (ioc->sense_len) {
4859 /*
4860 * sense_ptr points to the location that has the user
4861 * sense buffer address
4862 */
4863 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4864 ioc->sense_off);
4865
4866 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4867 sense, ioc->sense_len)) {
4868 printk(KERN_ERR "megasas: Failed to copy out to user "
4869 "sense data\n");
4870 error = -EFAULT;
4871 goto out;
4872 }
4873 }
4874
4875 /*
4876 * copy the status codes returned by the fw
4877 */
4878 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4879 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4880 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4881 error = -EFAULT;
4882 }
4883
4884 out:
4885 if (sense) {
4886 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
4887 sense, sense_handle);
4888 }
4889
4890 for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
4891 dma_free_coherent(&instance->pdev->dev,
4892 kern_sge32[i].length,
4893 kbuff_arr[i], kern_sge32[i].phys_addr);
4894 }
4895
4896 megasas_return_cmd(instance, cmd);
4897 return error;
4898 }
4899
4900 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4901 {
4902 struct megasas_iocpacket __user *user_ioc =
4903 (struct megasas_iocpacket __user *)arg;
4904 struct megasas_iocpacket *ioc;
4905 struct megasas_instance *instance;
4906 int error;
4907 int i;
4908 unsigned long flags;
4909 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4910
4911 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4912 if (!ioc)
4913 return -ENOMEM;
4914
4915 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4916 error = -EFAULT;
4917 goto out_kfree_ioc;
4918 }
4919
4920 instance = megasas_lookup_instance(ioc->host_no);
4921 if (!instance) {
4922 error = -ENODEV;
4923 goto out_kfree_ioc;
4924 }
4925
4926 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4927 printk(KERN_ERR "Controller in crit error\n");
4928 error = -ENODEV;
4929 goto out_kfree_ioc;
4930 }
4931
4932 if (instance->unload == 1) {
4933 error = -ENODEV;
4934 goto out_kfree_ioc;
4935 }
4936
4937 /*
4938 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4939 */
4940 if (down_interruptible(&instance->ioctl_sem)) {
4941 error = -ERESTARTSYS;
4942 goto out_kfree_ioc;
4943 }
4944
4945 for (i = 0; i < wait_time; i++) {
4946
4947 spin_lock_irqsave(&instance->hba_lock, flags);
4948 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4949 spin_unlock_irqrestore(&instance->hba_lock, flags);
4950 break;
4951 }
4952 spin_unlock_irqrestore(&instance->hba_lock, flags);
4953
4954 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4955 printk(KERN_NOTICE "megasas: waiting"
4956 "for controller reset to finish\n");
4957 }
4958
4959 msleep(1000);
4960 }
4961
4962 spin_lock_irqsave(&instance->hba_lock, flags);
4963 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4964 spin_unlock_irqrestore(&instance->hba_lock, flags);
4965
4966 printk(KERN_ERR "megaraid_sas: timed out while"
4967 "waiting for HBA to recover\n");
4968 error = -ENODEV;
4969 goto out_kfree_ioc;
4970 }
4971 spin_unlock_irqrestore(&instance->hba_lock, flags);
4972
4973 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4974 up(&instance->ioctl_sem);
4975
4976 out_kfree_ioc:
4977 kfree(ioc);
4978 return error;
4979 }
4980
4981 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4982 {
4983 struct megasas_instance *instance;
4984 struct megasas_aen aen;
4985 int error;
4986 int i;
4987 unsigned long flags;
4988 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4989
4990 if (file->private_data != file) {
4991 printk(KERN_DEBUG "megasas: fasync_helper was not "
4992 "called first\n");
4993 return -EINVAL;
4994 }
4995
4996 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4997 return -EFAULT;
4998
4999 instance = megasas_lookup_instance(aen.host_no);
5000
5001 if (!instance)
5002 return -ENODEV;
5003
5004 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
5005 return -ENODEV;
5006 }
5007
5008 if (instance->unload == 1) {
5009 return -ENODEV;
5010 }
5011
5012 for (i = 0; i < wait_time; i++) {
5013
5014 spin_lock_irqsave(&instance->hba_lock, flags);
5015 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
5016 spin_unlock_irqrestore(&instance->hba_lock,
5017 flags);
5018 break;
5019 }
5020
5021 spin_unlock_irqrestore(&instance->hba_lock, flags);
5022
5023 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5024 printk(KERN_NOTICE "megasas: waiting for"
5025 "controller reset to finish\n");
5026 }
5027
5028 msleep(1000);
5029 }
5030
5031 spin_lock_irqsave(&instance->hba_lock, flags);
5032 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5033 spin_unlock_irqrestore(&instance->hba_lock, flags);
5034 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5035 "for HBA to recover.\n");
5036 return -ENODEV;
5037 }
5038 spin_unlock_irqrestore(&instance->hba_lock, flags);
5039
5040 mutex_lock(&instance->aen_mutex);
5041 error = megasas_register_aen(instance, aen.seq_num,
5042 aen.class_locale_word);
5043 mutex_unlock(&instance->aen_mutex);
5044 return error;
5045 }
5046
5047 /**
5048 * megasas_mgmt_ioctl - char node ioctl entry point
5049 */
5050 static long
5051 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5052 {
5053 switch (cmd) {
5054 case MEGASAS_IOC_FIRMWARE:
5055 return megasas_mgmt_ioctl_fw(file, arg);
5056
5057 case MEGASAS_IOC_GET_AEN:
5058 return megasas_mgmt_ioctl_aen(file, arg);
5059 }
5060
5061 return -ENOTTY;
5062 }
5063
5064 #ifdef CONFIG_COMPAT
5065 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5066 {
5067 struct compat_megasas_iocpacket __user *cioc =
5068 (struct compat_megasas_iocpacket __user *)arg;
5069 struct megasas_iocpacket __user *ioc =
5070 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5071 int i;
5072 int error = 0;
5073 compat_uptr_t ptr;
5074
5075 if (clear_user(ioc, sizeof(*ioc)))
5076 return -EFAULT;
5077
5078 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5079 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5080 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5081 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5082 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5083 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5084 return -EFAULT;
5085
5086 /*
5087 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5088 * sense_len is not null, so prepare the 64bit value under
5089 * the same condition.
5090 */
5091 if (ioc->sense_len) {
5092 void __user **sense_ioc_ptr =
5093 (void __user **)(ioc->frame.raw + ioc->sense_off);
5094 compat_uptr_t *sense_cioc_ptr =
5095 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5096 if (get_user(ptr, sense_cioc_ptr) ||
5097 put_user(compat_ptr(ptr), sense_ioc_ptr))
5098 return -EFAULT;
5099 }
5100
5101 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5102 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5103 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5104 copy_in_user(&ioc->sgl[i].iov_len,
5105 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5106 return -EFAULT;
5107 }
5108
5109 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5110
5111 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5112 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5113 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5114 return -EFAULT;
5115 }
5116 return error;
5117 }
5118
5119 static long
5120 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5121 unsigned long arg)
5122 {
5123 switch (cmd) {
5124 case MEGASAS_IOC_FIRMWARE32:
5125 return megasas_mgmt_compat_ioctl_fw(file, arg);
5126 case MEGASAS_IOC_GET_AEN:
5127 return megasas_mgmt_ioctl_aen(file, arg);
5128 }
5129
5130 return -ENOTTY;
5131 }
5132 #endif
5133
5134 /*
5135 * File operations structure for management interface
5136 */
5137 static const struct file_operations megasas_mgmt_fops = {
5138 .owner = THIS_MODULE,
5139 .open = megasas_mgmt_open,
5140 .fasync = megasas_mgmt_fasync,
5141 .unlocked_ioctl = megasas_mgmt_ioctl,
5142 .poll = megasas_mgmt_poll,
5143 #ifdef CONFIG_COMPAT
5144 .compat_ioctl = megasas_mgmt_compat_ioctl,
5145 #endif
5146 .llseek = noop_llseek,
5147 };
5148
5149 /*
5150 * PCI hotplug support registration structure
5151 */
5152 static struct pci_driver megasas_pci_driver = {
5153
5154 .name = "megaraid_sas",
5155 .id_table = megasas_pci_table,
5156 .probe = megasas_probe_one,
5157 .remove = __devexit_p(megasas_detach_one),
5158 .suspend = megasas_suspend,
5159 .resume = megasas_resume,
5160 .shutdown = megasas_shutdown,
5161 };
5162
5163 /*
5164 * Sysfs driver attributes
5165 */
5166 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5167 {
5168 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5169 MEGASAS_VERSION);
5170 }
5171
5172 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5173
5174 static ssize_t
5175 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5176 {
5177 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5178 MEGASAS_RELDATE);
5179 }
5180
5181 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5182 NULL);
5183
5184 static ssize_t
5185 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5186 {
5187 return sprintf(buf, "%u\n", support_poll_for_event);
5188 }
5189
5190 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5191 megasas_sysfs_show_support_poll_for_event, NULL);
5192
5193 static ssize_t
5194 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5195 {
5196 return sprintf(buf, "%u\n", support_device_change);
5197 }
5198
5199 static DRIVER_ATTR(support_device_change, S_IRUGO,
5200 megasas_sysfs_show_support_device_change, NULL);
5201
5202 static ssize_t
5203 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5204 {
5205 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5206 }
5207
5208 static ssize_t
5209 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5210 {
5211 int retval = count;
5212 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5213 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5214 retval = -EINVAL;
5215 }
5216 return retval;
5217 }
5218
5219 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5220 megasas_sysfs_set_dbg_lvl);
5221
5222 static ssize_t
5223 megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf)
5224 {
5225 return sprintf(buf, "%u\n", poll_mode_io);
5226 }
5227
5228 static ssize_t
5229 megasas_sysfs_set_poll_mode_io(struct device_driver *dd,
5230 const char *buf, size_t count)
5231 {
5232 int retval = count;
5233 int tmp = poll_mode_io;
5234 int i;
5235 struct megasas_instance *instance;
5236
5237 if (sscanf(buf, "%u", &poll_mode_io) < 1) {
5238 printk(KERN_ERR "megasas: could not set poll_mode_io\n");
5239 retval = -EINVAL;
5240 }
5241
5242 /*
5243 * Check if poll_mode_io is already set or is same as previous value
5244 */
5245 if ((tmp && poll_mode_io) || (tmp == poll_mode_io))
5246 goto out;
5247
5248 if (poll_mode_io) {
5249 /*
5250 * Start timers for all adapters
5251 */
5252 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5253 instance = megasas_mgmt_info.instance[i];
5254 if (instance) {
5255 megasas_start_timer(instance,
5256 &instance->io_completion_timer,
5257 megasas_io_completion_timer,
5258 MEGASAS_COMPLETION_TIMER_INTERVAL);
5259 }
5260 }
5261 } else {
5262 /*
5263 * Delete timers for all adapters
5264 */
5265 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5266 instance = megasas_mgmt_info.instance[i];
5267 if (instance)
5268 del_timer_sync(&instance->io_completion_timer);
5269 }
5270 }
5271
5272 out:
5273 return retval;
5274 }
5275
5276 static void
5277 megasas_aen_polling(struct work_struct *work)
5278 {
5279 struct megasas_aen_event *ev =
5280 container_of(work, struct megasas_aen_event, hotplug_work);
5281 struct megasas_instance *instance = ev->instance;
5282 union megasas_evt_class_locale class_locale;
5283 struct Scsi_Host *host;
5284 struct scsi_device *sdev1;
5285 u16 pd_index = 0;
5286 u16 ld_index = 0;
5287 int i, j, doscan = 0;
5288 u32 seq_num;
5289 int error;
5290
5291 if (!instance) {
5292 printk(KERN_ERR "invalid instance!\n");
5293 kfree(ev);
5294 return;
5295 }
5296 instance->ev = NULL;
5297 host = instance->host;
5298 if (instance->evt_detail) {
5299
5300 switch (instance->evt_detail->code) {
5301 case MR_EVT_PD_INSERTED:
5302 if (megasas_get_pd_list(instance) == 0) {
5303 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5304 for (j = 0;
5305 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5306 j++) {
5307
5308 pd_index =
5309 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5310
5311 sdev1 =
5312 scsi_device_lookup(host, i, j, 0);
5313
5314 if (instance->pd_list[pd_index].driveState
5315 == MR_PD_STATE_SYSTEM) {
5316 if (!sdev1) {
5317 scsi_add_device(host, i, j, 0);
5318 }
5319
5320 if (sdev1)
5321 scsi_device_put(sdev1);
5322 }
5323 }
5324 }
5325 }
5326 doscan = 0;
5327 break;
5328
5329 case MR_EVT_PD_REMOVED:
5330 if (megasas_get_pd_list(instance) == 0) {
5331 megasas_get_pd_list(instance);
5332 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5333 for (j = 0;
5334 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5335 j++) {
5336
5337 pd_index =
5338 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5339
5340 sdev1 =
5341 scsi_device_lookup(host, i, j, 0);
5342
5343 if (instance->pd_list[pd_index].driveState
5344 == MR_PD_STATE_SYSTEM) {
5345 if (sdev1) {
5346 scsi_device_put(sdev1);
5347 }
5348 } else {
5349 if (sdev1) {
5350 scsi_remove_device(sdev1);
5351 scsi_device_put(sdev1);
5352 }
5353 }
5354 }
5355 }
5356 }
5357 doscan = 0;
5358 break;
5359
5360 case MR_EVT_LD_OFFLINE:
5361 case MR_EVT_CFG_CLEARED:
5362 case MR_EVT_LD_DELETED:
5363 megasas_get_ld_list(instance);
5364 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5365 for (j = 0;
5366 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5367 j++) {
5368
5369 ld_index =
5370 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5371
5372 sdev1 = scsi_device_lookup(host,
5373 i + MEGASAS_MAX_LD_CHANNELS,
5374 j,
5375 0);
5376
5377 if (instance->ld_ids[ld_index] != 0xff) {
5378 if (sdev1) {
5379 scsi_device_put(sdev1);
5380 }
5381 } else {
5382 if (sdev1) {
5383 scsi_remove_device(sdev1);
5384 scsi_device_put(sdev1);
5385 }
5386 }
5387 }
5388 }
5389 doscan = 0;
5390 break;
5391 case MR_EVT_LD_CREATED:
5392 megasas_get_ld_list(instance);
5393 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5394 for (j = 0;
5395 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5396 j++) {
5397 ld_index =
5398 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5399
5400 sdev1 = scsi_device_lookup(host,
5401 i+MEGASAS_MAX_LD_CHANNELS,
5402 j, 0);
5403
5404 if (instance->ld_ids[ld_index] !=
5405 0xff) {
5406 if (!sdev1) {
5407 scsi_add_device(host,
5408 i + 2,
5409 j, 0);
5410 }
5411 }
5412 if (sdev1) {
5413 scsi_device_put(sdev1);
5414 }
5415 }
5416 }
5417 doscan = 0;
5418 break;
5419 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5420 case MR_EVT_FOREIGN_CFG_IMPORTED:
5421 case MR_EVT_LD_STATE_CHANGE:
5422 doscan = 1;
5423 break;
5424 default:
5425 doscan = 0;
5426 break;
5427 }
5428 } else {
5429 printk(KERN_ERR "invalid evt_detail!\n");
5430 kfree(ev);
5431 return;
5432 }
5433
5434 if (doscan) {
5435 printk(KERN_INFO "scanning ...\n");
5436 megasas_get_pd_list(instance);
5437 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5438 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5439 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5440 sdev1 = scsi_device_lookup(host, i, j, 0);
5441 if (instance->pd_list[pd_index].driveState ==
5442 MR_PD_STATE_SYSTEM) {
5443 if (!sdev1) {
5444 scsi_add_device(host, i, j, 0);
5445 }
5446 if (sdev1)
5447 scsi_device_put(sdev1);
5448 } else {
5449 if (sdev1) {
5450 scsi_remove_device(sdev1);
5451 scsi_device_put(sdev1);
5452 }
5453 }
5454 }
5455 }
5456
5457 megasas_get_ld_list(instance);
5458 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5459 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5460 ld_index =
5461 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5462
5463 sdev1 = scsi_device_lookup(host,
5464 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5465 if (instance->ld_ids[ld_index] != 0xff) {
5466 if (!sdev1) {
5467 scsi_add_device(host,
5468 i+2,
5469 j, 0);
5470 } else {
5471 scsi_device_put(sdev1);
5472 }
5473 } else {
5474 if (sdev1) {
5475 scsi_remove_device(sdev1);
5476 scsi_device_put(sdev1);
5477 }
5478 }
5479 }
5480 }
5481 }
5482
5483 if ( instance->aen_cmd != NULL ) {
5484 kfree(ev);
5485 return ;
5486 }
5487
5488 seq_num = instance->evt_detail->seq_num + 1;
5489
5490 /* Register AEN with FW for latest sequence number plus 1 */
5491 class_locale.members.reserved = 0;
5492 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5493 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5494 mutex_lock(&instance->aen_mutex);
5495 error = megasas_register_aen(instance, seq_num,
5496 class_locale.word);
5497 mutex_unlock(&instance->aen_mutex);
5498
5499 if (error)
5500 printk(KERN_ERR "register aen failed error %x\n", error);
5501
5502 kfree(ev);
5503 }
5504
5505
5506 static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR,
5507 megasas_sysfs_show_poll_mode_io,
5508 megasas_sysfs_set_poll_mode_io);
5509
5510 /**
5511 * megasas_init - Driver load entry point
5512 */
5513 static int __init megasas_init(void)
5514 {
5515 int rval;
5516
5517 /*
5518 * Announce driver version and other information
5519 */
5520 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5521 MEGASAS_EXT_VERSION);
5522
5523 support_poll_for_event = 2;
5524 support_device_change = 1;
5525
5526 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5527
5528 /*
5529 * Register character device node
5530 */
5531 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5532
5533 if (rval < 0) {
5534 printk(KERN_DEBUG "megasas: failed to open device node\n");
5535 return rval;
5536 }
5537
5538 megasas_mgmt_majorno = rval;
5539
5540 /*
5541 * Register ourselves as PCI hotplug module
5542 */
5543 rval = pci_register_driver(&megasas_pci_driver);
5544
5545 if (rval) {
5546 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5547 goto err_pcidrv;
5548 }
5549
5550 rval = driver_create_file(&megasas_pci_driver.driver,
5551 &driver_attr_version);
5552 if (rval)
5553 goto err_dcf_attr_ver;
5554 rval = driver_create_file(&megasas_pci_driver.driver,
5555 &driver_attr_release_date);
5556 if (rval)
5557 goto err_dcf_rel_date;
5558
5559 rval = driver_create_file(&megasas_pci_driver.driver,
5560 &driver_attr_support_poll_for_event);
5561 if (rval)
5562 goto err_dcf_support_poll_for_event;
5563
5564 rval = driver_create_file(&megasas_pci_driver.driver,
5565 &driver_attr_dbg_lvl);
5566 if (rval)
5567 goto err_dcf_dbg_lvl;
5568 rval = driver_create_file(&megasas_pci_driver.driver,
5569 &driver_attr_poll_mode_io);
5570 if (rval)
5571 goto err_dcf_poll_mode_io;
5572
5573 rval = driver_create_file(&megasas_pci_driver.driver,
5574 &driver_attr_support_device_change);
5575 if (rval)
5576 goto err_dcf_support_device_change;
5577
5578 return rval;
5579
5580 err_dcf_support_device_change:
5581 driver_remove_file(&megasas_pci_driver.driver,
5582 &driver_attr_poll_mode_io);
5583
5584 err_dcf_poll_mode_io:
5585 driver_remove_file(&megasas_pci_driver.driver,
5586 &driver_attr_dbg_lvl);
5587 err_dcf_dbg_lvl:
5588 driver_remove_file(&megasas_pci_driver.driver,
5589 &driver_attr_support_poll_for_event);
5590
5591 err_dcf_support_poll_for_event:
5592 driver_remove_file(&megasas_pci_driver.driver,
5593 &driver_attr_release_date);
5594
5595 err_dcf_rel_date:
5596 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5597 err_dcf_attr_ver:
5598 pci_unregister_driver(&megasas_pci_driver);
5599 err_pcidrv:
5600 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5601 return rval;
5602 }
5603
5604 /**
5605 * megasas_exit - Driver unload entry point
5606 */
5607 static void __exit megasas_exit(void)
5608 {
5609 driver_remove_file(&megasas_pci_driver.driver,
5610 &driver_attr_poll_mode_io);
5611 driver_remove_file(&megasas_pci_driver.driver,
5612 &driver_attr_dbg_lvl);
5613 driver_remove_file(&megasas_pci_driver.driver,
5614 &driver_attr_support_poll_for_event);
5615 driver_remove_file(&megasas_pci_driver.driver,
5616 &driver_attr_support_device_change);
5617 driver_remove_file(&megasas_pci_driver.driver,
5618 &driver_attr_release_date);
5619 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5620
5621 pci_unregister_driver(&megasas_pci_driver);
5622 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5623 }
5624
5625 module_init(megasas_init);
5626 module_exit(megasas_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree