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c4a3e0a5 BS |
1 | /* |
2 | * | |
3 | * Linux MegaRAID driver for SAS based RAID controllers | |
4 | * | |
f28cd7cf | 5 | * Copyright (c) 2003-2005 LSI Corporation. |
c4a3e0a5 BS |
6 | * |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FILE : megaraid_sas.c | |
63bad45d | 13 | * Version : v00.00.04.17.1-rc1 |
c4a3e0a5 BS |
14 | * |
15 | * Authors: | |
cc5968c8 SP |
16 | * (email-id : megaraidlinux@lsi.com) |
17 | * Sreenivas Bagalkote | |
18 | * Sumant Patro | |
19 | * Bo Yang | |
c4a3e0a5 BS |
20 | * |
21 | * List of supported controllers | |
22 | * | |
23 | * OEM Product Name VID DID SSVID SSID | |
24 | * --- ------------ --- --- ---- ---- | |
25 | */ | |
26 | ||
27 | #include <linux/kernel.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/pci.h> | |
30 | #include <linux/list.h> | |
c4a3e0a5 BS |
31 | #include <linux/moduleparam.h> |
32 | #include <linux/module.h> | |
33 | #include <linux/spinlock.h> | |
34 | #include <linux/interrupt.h> | |
35 | #include <linux/delay.h> | |
f2b9857e | 36 | #include <linux/smp_lock.h> |
c4a3e0a5 | 37 | #include <linux/uio.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
c4a3e0a5 | 39 | #include <asm/uaccess.h> |
43399236 | 40 | #include <linux/fs.h> |
c4a3e0a5 | 41 | #include <linux/compat.h> |
cf62a0a5 | 42 | #include <linux/blkdev.h> |
0b950672 | 43 | #include <linux/mutex.h> |
c3518837 | 44 | #include <linux/poll.h> |
c4a3e0a5 BS |
45 | |
46 | #include <scsi/scsi.h> | |
47 | #include <scsi/scsi_cmnd.h> | |
48 | #include <scsi/scsi_device.h> | |
49 | #include <scsi/scsi_host.h> | |
50 | #include "megaraid_sas.h" | |
51 | ||
ad84db2e | 52 | /* |
53 | * poll_mode_io:1- schedule complete completion from q cmd | |
54 | */ | |
55 | static unsigned int poll_mode_io; | |
56 | module_param_named(poll_mode_io, poll_mode_io, int, 0); | |
57 | MODULE_PARM_DESC(poll_mode_io, | |
58 | "Complete cmds from IO path, (default=0)"); | |
59 | ||
c4a3e0a5 BS |
60 | MODULE_LICENSE("GPL"); |
61 | MODULE_VERSION(MEGASAS_VERSION); | |
3d6d174a | 62 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
f28cd7cf | 63 | MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); |
c4a3e0a5 BS |
64 | |
65 | /* | |
66 | * PCI ID table for all supported controllers | |
67 | */ | |
68 | static struct pci_device_id megasas_pci_table[] = { | |
69 | ||
f3d7271c HK |
70 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, |
71 | /* xscale IOP */ | |
72 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, | |
73 | /* ppc IOP */ | |
af7a5647 | 74 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, |
75 | /* ppc IOP */ | |
6610a6b3 YB |
76 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, |
77 | /* gen2*/ | |
78 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, | |
79 | /* gen2*/ | |
87911122 YB |
80 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, |
81 | /* skinny*/ | |
82 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, | |
83 | /* skinny*/ | |
f3d7271c HK |
84 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, |
85 | /* xscale IOP, vega */ | |
86 | {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, | |
87 | /* xscale IOP */ | |
88 | {} | |
c4a3e0a5 BS |
89 | }; |
90 | ||
91 | MODULE_DEVICE_TABLE(pci, megasas_pci_table); | |
92 | ||
93 | static int megasas_mgmt_majorno; | |
94 | static struct megasas_mgmt_info megasas_mgmt_info; | |
95 | static struct fasync_struct *megasas_async_queue; | |
0b950672 | 96 | static DEFINE_MUTEX(megasas_async_queue_mutex); |
c4a3e0a5 | 97 | |
c3518837 YB |
98 | static int megasas_poll_wait_aen; |
99 | static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); | |
72c4fd36 | 100 | static u32 support_poll_for_event; |
658dcedb SP |
101 | static u32 megasas_dbg_lvl; |
102 | ||
c3518837 YB |
103 | /* define lock for aen poll */ |
104 | spinlock_t poll_aen_lock; | |
105 | ||
7343eb65 | 106 | static void |
107 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, | |
108 | u8 alt_status); | |
109 | ||
c4a3e0a5 BS |
110 | /** |
111 | * megasas_get_cmd - Get a command from the free pool | |
112 | * @instance: Adapter soft state | |
113 | * | |
114 | * Returns a free command from the pool | |
115 | */ | |
858119e1 | 116 | static struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
c4a3e0a5 BS |
117 | *instance) |
118 | { | |
119 | unsigned long flags; | |
120 | struct megasas_cmd *cmd = NULL; | |
121 | ||
122 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
123 | ||
124 | if (!list_empty(&instance->cmd_pool)) { | |
125 | cmd = list_entry((&instance->cmd_pool)->next, | |
126 | struct megasas_cmd, list); | |
127 | list_del_init(&cmd->list); | |
128 | } else { | |
129 | printk(KERN_ERR "megasas: Command pool empty!\n"); | |
130 | } | |
131 | ||
132 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
133 | return cmd; | |
134 | } | |
135 | ||
136 | /** | |
137 | * megasas_return_cmd - Return a cmd to free command pool | |
138 | * @instance: Adapter soft state | |
139 | * @cmd: Command packet to be returned to free command pool | |
140 | */ | |
141 | static inline void | |
142 | megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
143 | { | |
144 | unsigned long flags; | |
145 | ||
146 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
147 | ||
148 | cmd->scmd = NULL; | |
149 | list_add_tail(&cmd->list, &instance->cmd_pool); | |
150 | ||
151 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
152 | } | |
153 | ||
1341c939 SP |
154 | |
155 | /** | |
156 | * The following functions are defined for xscale | |
157 | * (deviceid : 1064R, PERC5) controllers | |
158 | */ | |
159 | ||
c4a3e0a5 | 160 | /** |
1341c939 | 161 | * megasas_enable_intr_xscale - Enables interrupts |
c4a3e0a5 BS |
162 | * @regs: MFI register set |
163 | */ | |
164 | static inline void | |
1341c939 | 165 | megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) |
c4a3e0a5 BS |
166 | { |
167 | writel(1, &(regs)->outbound_intr_mask); | |
168 | ||
169 | /* Dummy readl to force pci flush */ | |
170 | readl(®s->outbound_intr_mask); | |
171 | } | |
172 | ||
b274cab7 SP |
173 | /** |
174 | * megasas_disable_intr_xscale -Disables interrupt | |
175 | * @regs: MFI register set | |
176 | */ | |
177 | static inline void | |
178 | megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) | |
179 | { | |
180 | u32 mask = 0x1f; | |
181 | writel(mask, ®s->outbound_intr_mask); | |
182 | /* Dummy readl to force pci flush */ | |
183 | readl(®s->outbound_intr_mask); | |
184 | } | |
185 | ||
1341c939 SP |
186 | /** |
187 | * megasas_read_fw_status_reg_xscale - returns the current FW status value | |
188 | * @regs: MFI register set | |
189 | */ | |
190 | static u32 | |
191 | megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) | |
192 | { | |
193 | return readl(&(regs)->outbound_msg_0); | |
194 | } | |
195 | /** | |
196 | * megasas_clear_interrupt_xscale - Check & clear interrupt | |
197 | * @regs: MFI register set | |
198 | */ | |
199 | static int | |
200 | megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) | |
201 | { | |
202 | u32 status; | |
203 | /* | |
204 | * Check if it is our interrupt | |
205 | */ | |
206 | status = readl(®s->outbound_intr_status); | |
207 | ||
208 | if (!(status & MFI_OB_INTR_STATUS_MASK)) { | |
209 | return 1; | |
210 | } | |
211 | ||
212 | /* | |
213 | * Clear the interrupt by writing back the same value | |
214 | */ | |
215 | writel(status, ®s->outbound_intr_status); | |
216 | ||
06f579de YB |
217 | /* Dummy readl to force pci flush */ |
218 | readl(®s->outbound_intr_status); | |
219 | ||
1341c939 SP |
220 | return 0; |
221 | } | |
222 | ||
223 | /** | |
224 | * megasas_fire_cmd_xscale - Sends command to the FW | |
225 | * @frame_phys_addr : Physical address of cmd | |
226 | * @frame_count : Number of frames for the command | |
227 | * @regs : MFI register set | |
228 | */ | |
229 | static inline void | |
0c79e681 YB |
230 | megasas_fire_cmd_xscale(struct megasas_instance *instance, |
231 | dma_addr_t frame_phys_addr, | |
232 | u32 frame_count, | |
233 | struct megasas_register_set __iomem *regs) | |
1341c939 SP |
234 | { |
235 | writel((frame_phys_addr >> 3)|(frame_count), | |
236 | &(regs)->inbound_queue_port); | |
237 | } | |
238 | ||
239 | static struct megasas_instance_template megasas_instance_template_xscale = { | |
240 | ||
241 | .fire_cmd = megasas_fire_cmd_xscale, | |
242 | .enable_intr = megasas_enable_intr_xscale, | |
b274cab7 | 243 | .disable_intr = megasas_disable_intr_xscale, |
1341c939 SP |
244 | .clear_intr = megasas_clear_intr_xscale, |
245 | .read_fw_status_reg = megasas_read_fw_status_reg_xscale, | |
246 | }; | |
247 | ||
248 | /** | |
249 | * This is the end of set of functions & definitions specific | |
250 | * to xscale (deviceid : 1064R, PERC5) controllers | |
251 | */ | |
252 | ||
f9876f0b SP |
253 | /** |
254 | * The following functions are defined for ppc (deviceid : 0x60) | |
255 | * controllers | |
256 | */ | |
257 | ||
258 | /** | |
259 | * megasas_enable_intr_ppc - Enables interrupts | |
260 | * @regs: MFI register set | |
261 | */ | |
262 | static inline void | |
263 | megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) | |
264 | { | |
265 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
266 | ||
267 | writel(~0x80000004, &(regs)->outbound_intr_mask); | |
268 | ||
269 | /* Dummy readl to force pci flush */ | |
270 | readl(®s->outbound_intr_mask); | |
271 | } | |
272 | ||
b274cab7 SP |
273 | /** |
274 | * megasas_disable_intr_ppc - Disable interrupt | |
275 | * @regs: MFI register set | |
276 | */ | |
277 | static inline void | |
278 | megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) | |
279 | { | |
280 | u32 mask = 0xFFFFFFFF; | |
281 | writel(mask, ®s->outbound_intr_mask); | |
282 | /* Dummy readl to force pci flush */ | |
283 | readl(®s->outbound_intr_mask); | |
284 | } | |
285 | ||
f9876f0b SP |
286 | /** |
287 | * megasas_read_fw_status_reg_ppc - returns the current FW status value | |
288 | * @regs: MFI register set | |
289 | */ | |
290 | static u32 | |
291 | megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) | |
292 | { | |
293 | return readl(&(regs)->outbound_scratch_pad); | |
294 | } | |
295 | ||
296 | /** | |
297 | * megasas_clear_interrupt_ppc - Check & clear interrupt | |
298 | * @regs: MFI register set | |
299 | */ | |
300 | static int | |
301 | megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) | |
302 | { | |
303 | u32 status; | |
304 | /* | |
305 | * Check if it is our interrupt | |
306 | */ | |
307 | status = readl(®s->outbound_intr_status); | |
308 | ||
309 | if (!(status & MFI_REPLY_1078_MESSAGE_INTERRUPT)) { | |
310 | return 1; | |
311 | } | |
312 | ||
313 | /* | |
314 | * Clear the interrupt by writing back the same value | |
315 | */ | |
316 | writel(status, ®s->outbound_doorbell_clear); | |
317 | ||
06f579de YB |
318 | /* Dummy readl to force pci flush */ |
319 | readl(®s->outbound_doorbell_clear); | |
320 | ||
f9876f0b SP |
321 | return 0; |
322 | } | |
323 | /** | |
324 | * megasas_fire_cmd_ppc - Sends command to the FW | |
325 | * @frame_phys_addr : Physical address of cmd | |
326 | * @frame_count : Number of frames for the command | |
327 | * @regs : MFI register set | |
328 | */ | |
329 | static inline void | |
0c79e681 YB |
330 | megasas_fire_cmd_ppc(struct megasas_instance *instance, |
331 | dma_addr_t frame_phys_addr, | |
332 | u32 frame_count, | |
333 | struct megasas_register_set __iomem *regs) | |
f9876f0b SP |
334 | { |
335 | writel((frame_phys_addr | (frame_count<<1))|1, | |
336 | &(regs)->inbound_queue_port); | |
337 | } | |
338 | ||
339 | static struct megasas_instance_template megasas_instance_template_ppc = { | |
340 | ||
341 | .fire_cmd = megasas_fire_cmd_ppc, | |
342 | .enable_intr = megasas_enable_intr_ppc, | |
b274cab7 | 343 | .disable_intr = megasas_disable_intr_ppc, |
f9876f0b SP |
344 | .clear_intr = megasas_clear_intr_ppc, |
345 | .read_fw_status_reg = megasas_read_fw_status_reg_ppc, | |
346 | }; | |
347 | ||
87911122 YB |
348 | /** |
349 | * megasas_enable_intr_skinny - Enables interrupts | |
350 | * @regs: MFI register set | |
351 | */ | |
352 | static inline void | |
353 | megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) | |
354 | { | |
355 | writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); | |
356 | ||
357 | writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
358 | ||
359 | /* Dummy readl to force pci flush */ | |
360 | readl(®s->outbound_intr_mask); | |
361 | } | |
362 | ||
363 | /** | |
364 | * megasas_disable_intr_skinny - Disables interrupt | |
365 | * @regs: MFI register set | |
366 | */ | |
367 | static inline void | |
368 | megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) | |
369 | { | |
370 | u32 mask = 0xFFFFFFFF; | |
371 | writel(mask, ®s->outbound_intr_mask); | |
372 | /* Dummy readl to force pci flush */ | |
373 | readl(®s->outbound_intr_mask); | |
374 | } | |
375 | ||
376 | /** | |
377 | * megasas_read_fw_status_reg_skinny - returns the current FW status value | |
378 | * @regs: MFI register set | |
379 | */ | |
380 | static u32 | |
381 | megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) | |
382 | { | |
383 | return readl(&(regs)->outbound_scratch_pad); | |
384 | } | |
385 | ||
386 | /** | |
387 | * megasas_clear_interrupt_skinny - Check & clear interrupt | |
388 | * @regs: MFI register set | |
389 | */ | |
390 | static int | |
391 | megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) | |
392 | { | |
393 | u32 status; | |
394 | /* | |
395 | * Check if it is our interrupt | |
396 | */ | |
397 | status = readl(®s->outbound_intr_status); | |
398 | ||
399 | if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { | |
400 | return 1; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Clear the interrupt by writing back the same value | |
405 | */ | |
406 | writel(status, ®s->outbound_intr_status); | |
407 | ||
408 | /* | |
409 | * dummy read to flush PCI | |
410 | */ | |
411 | readl(®s->outbound_intr_status); | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | /** | |
417 | * megasas_fire_cmd_skinny - Sends command to the FW | |
418 | * @frame_phys_addr : Physical address of cmd | |
419 | * @frame_count : Number of frames for the command | |
420 | * @regs : MFI register set | |
421 | */ | |
422 | static inline void | |
0c79e681 YB |
423 | megasas_fire_cmd_skinny(struct megasas_instance *instance, |
424 | dma_addr_t frame_phys_addr, | |
425 | u32 frame_count, | |
87911122 YB |
426 | struct megasas_register_set __iomem *regs) |
427 | { | |
0c79e681 YB |
428 | unsigned long flags; |
429 | spin_lock_irqsave(&instance->fire_lock, flags); | |
87911122 YB |
430 | writel(0, &(regs)->inbound_high_queue_port); |
431 | writel((frame_phys_addr | (frame_count<<1))|1, | |
432 | &(regs)->inbound_low_queue_port); | |
0c79e681 | 433 | spin_unlock_irqrestore(&instance->fire_lock, flags); |
87911122 YB |
434 | } |
435 | ||
436 | static struct megasas_instance_template megasas_instance_template_skinny = { | |
437 | ||
438 | .fire_cmd = megasas_fire_cmd_skinny, | |
439 | .enable_intr = megasas_enable_intr_skinny, | |
440 | .disable_intr = megasas_disable_intr_skinny, | |
441 | .clear_intr = megasas_clear_intr_skinny, | |
442 | .read_fw_status_reg = megasas_read_fw_status_reg_skinny, | |
443 | }; | |
444 | ||
445 | ||
6610a6b3 YB |
446 | /** |
447 | * The following functions are defined for gen2 (deviceid : 0x78 0x79) | |
448 | * controllers | |
449 | */ | |
450 | ||
451 | /** | |
452 | * megasas_enable_intr_gen2 - Enables interrupts | |
453 | * @regs: MFI register set | |
454 | */ | |
455 | static inline void | |
456 | megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) | |
457 | { | |
458 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
459 | ||
460 | /* write ~0x00000005 (4 & 1) to the intr mask*/ | |
461 | writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
462 | ||
463 | /* Dummy readl to force pci flush */ | |
464 | readl(®s->outbound_intr_mask); | |
465 | } | |
466 | ||
467 | /** | |
468 | * megasas_disable_intr_gen2 - Disables interrupt | |
469 | * @regs: MFI register set | |
470 | */ | |
471 | static inline void | |
472 | megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) | |
473 | { | |
474 | u32 mask = 0xFFFFFFFF; | |
475 | writel(mask, ®s->outbound_intr_mask); | |
476 | /* Dummy readl to force pci flush */ | |
477 | readl(®s->outbound_intr_mask); | |
478 | } | |
479 | ||
480 | /** | |
481 | * megasas_read_fw_status_reg_gen2 - returns the current FW status value | |
482 | * @regs: MFI register set | |
483 | */ | |
484 | static u32 | |
485 | megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) | |
486 | { | |
487 | return readl(&(regs)->outbound_scratch_pad); | |
488 | } | |
489 | ||
490 | /** | |
491 | * megasas_clear_interrupt_gen2 - Check & clear interrupt | |
492 | * @regs: MFI register set | |
493 | */ | |
494 | static int | |
495 | megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) | |
496 | { | |
497 | u32 status; | |
498 | /* | |
499 | * Check if it is our interrupt | |
500 | */ | |
501 | status = readl(®s->outbound_intr_status); | |
502 | ||
503 | if (!(status & MFI_GEN2_ENABLE_INTERRUPT_MASK)) | |
504 | return 1; | |
505 | ||
506 | /* | |
507 | * Clear the interrupt by writing back the same value | |
508 | */ | |
509 | writel(status, ®s->outbound_doorbell_clear); | |
510 | ||
511 | /* Dummy readl to force pci flush */ | |
512 | readl(®s->outbound_intr_status); | |
513 | ||
514 | return 0; | |
515 | } | |
516 | /** | |
517 | * megasas_fire_cmd_gen2 - Sends command to the FW | |
518 | * @frame_phys_addr : Physical address of cmd | |
519 | * @frame_count : Number of frames for the command | |
520 | * @regs : MFI register set | |
521 | */ | |
522 | static inline void | |
0c79e681 YB |
523 | megasas_fire_cmd_gen2(struct megasas_instance *instance, |
524 | dma_addr_t frame_phys_addr, | |
525 | u32 frame_count, | |
6610a6b3 YB |
526 | struct megasas_register_set __iomem *regs) |
527 | { | |
528 | writel((frame_phys_addr | (frame_count<<1))|1, | |
529 | &(regs)->inbound_queue_port); | |
530 | } | |
531 | ||
532 | static struct megasas_instance_template megasas_instance_template_gen2 = { | |
533 | ||
534 | .fire_cmd = megasas_fire_cmd_gen2, | |
535 | .enable_intr = megasas_enable_intr_gen2, | |
536 | .disable_intr = megasas_disable_intr_gen2, | |
537 | .clear_intr = megasas_clear_intr_gen2, | |
538 | .read_fw_status_reg = megasas_read_fw_status_reg_gen2, | |
539 | }; | |
540 | ||
f9876f0b SP |
541 | /** |
542 | * This is the end of set of functions & definitions | |
543 | * specific to ppc (deviceid : 0x60) controllers | |
544 | */ | |
545 | ||
c4a3e0a5 BS |
546 | /** |
547 | * megasas_issue_polled - Issues a polling command | |
548 | * @instance: Adapter soft state | |
549 | * @cmd: Command packet to be issued | |
550 | * | |
551 | * For polling, MFI requires the cmd_status to be set to 0xFF before posting. | |
552 | */ | |
553 | static int | |
554 | megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
555 | { | |
556 | int i; | |
557 | u32 msecs = MFI_POLL_TIMEOUT_SECS * 1000; | |
558 | ||
559 | struct megasas_header *frame_hdr = &cmd->frame->hdr; | |
560 | ||
561 | frame_hdr->cmd_status = 0xFF; | |
562 | frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; | |
563 | ||
564 | /* | |
565 | * Issue the frame using inbound queue port | |
566 | */ | |
0c79e681 YB |
567 | instance->instancet->fire_cmd(instance, |
568 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
569 | |
570 | /* | |
571 | * Wait for cmd_status to change | |
572 | */ | |
573 | for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i++) { | |
574 | rmb(); | |
575 | msleep(1); | |
576 | } | |
577 | ||
578 | if (frame_hdr->cmd_status == 0xff) | |
579 | return -ETIME; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | /** | |
585 | * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds | |
586 | * @instance: Adapter soft state | |
587 | * @cmd: Command to be issued | |
588 | * | |
589 | * This function waits on an event for the command to be returned from ISR. | |
2a3681e5 | 590 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
c4a3e0a5 BS |
591 | * Used to issue ioctl commands. |
592 | */ | |
593 | static int | |
594 | megasas_issue_blocked_cmd(struct megasas_instance *instance, | |
595 | struct megasas_cmd *cmd) | |
596 | { | |
597 | cmd->cmd_status = ENODATA; | |
598 | ||
0c79e681 YB |
599 | instance->instancet->fire_cmd(instance, |
600 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 | 601 | |
2a3681e5 SP |
602 | wait_event_timeout(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA), |
603 | MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); | |
c4a3e0a5 BS |
604 | |
605 | return 0; | |
606 | } | |
607 | ||
608 | /** | |
609 | * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd | |
610 | * @instance: Adapter soft state | |
611 | * @cmd_to_abort: Previously issued cmd to be aborted | |
612 | * | |
613 | * MFI firmware can abort previously issued AEN comamnd (automatic event | |
614 | * notification). The megasas_issue_blocked_abort_cmd() issues such abort | |
2a3681e5 SP |
615 | * cmd and waits for return status. |
616 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs | |
c4a3e0a5 BS |
617 | */ |
618 | static int | |
619 | megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, | |
620 | struct megasas_cmd *cmd_to_abort) | |
621 | { | |
622 | struct megasas_cmd *cmd; | |
623 | struct megasas_abort_frame *abort_fr; | |
624 | ||
625 | cmd = megasas_get_cmd(instance); | |
626 | ||
627 | if (!cmd) | |
628 | return -1; | |
629 | ||
630 | abort_fr = &cmd->frame->abort; | |
631 | ||
632 | /* | |
633 | * Prepare and issue the abort frame | |
634 | */ | |
635 | abort_fr->cmd = MFI_CMD_ABORT; | |
636 | abort_fr->cmd_status = 0xFF; | |
637 | abort_fr->flags = 0; | |
638 | abort_fr->abort_context = cmd_to_abort->index; | |
639 | abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; | |
640 | abort_fr->abort_mfi_phys_addr_hi = 0; | |
641 | ||
642 | cmd->sync_cmd = 1; | |
643 | cmd->cmd_status = 0xFF; | |
644 | ||
0c79e681 YB |
645 | instance->instancet->fire_cmd(instance, |
646 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
647 | |
648 | /* | |
649 | * Wait for this cmd to complete | |
650 | */ | |
2a3681e5 SP |
651 | wait_event_timeout(instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF), |
652 | MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ); | |
c4a3e0a5 BS |
653 | |
654 | megasas_return_cmd(instance, cmd); | |
655 | return 0; | |
656 | } | |
657 | ||
658 | /** | |
659 | * megasas_make_sgl32 - Prepares 32-bit SGL | |
660 | * @instance: Adapter soft state | |
661 | * @scp: SCSI command from the mid-layer | |
662 | * @mfi_sgl: SGL to be filled in | |
663 | * | |
664 | * If successful, this function returns the number of SG elements. Otherwise, | |
665 | * it returnes -1. | |
666 | */ | |
858119e1 | 667 | static int |
c4a3e0a5 BS |
668 | megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, |
669 | union megasas_sgl *mfi_sgl) | |
670 | { | |
671 | int i; | |
672 | int sge_count; | |
673 | struct scatterlist *os_sgl; | |
674 | ||
155d98f0 FT |
675 | sge_count = scsi_dma_map(scp); |
676 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 677 | |
155d98f0 FT |
678 | if (sge_count) { |
679 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
680 | mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); | |
681 | mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); | |
682 | } | |
c4a3e0a5 | 683 | } |
c4a3e0a5 BS |
684 | return sge_count; |
685 | } | |
686 | ||
687 | /** | |
688 | * megasas_make_sgl64 - Prepares 64-bit SGL | |
689 | * @instance: Adapter soft state | |
690 | * @scp: SCSI command from the mid-layer | |
691 | * @mfi_sgl: SGL to be filled in | |
692 | * | |
693 | * If successful, this function returns the number of SG elements. Otherwise, | |
694 | * it returnes -1. | |
695 | */ | |
858119e1 | 696 | static int |
c4a3e0a5 BS |
697 | megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, |
698 | union megasas_sgl *mfi_sgl) | |
699 | { | |
700 | int i; | |
701 | int sge_count; | |
702 | struct scatterlist *os_sgl; | |
703 | ||
155d98f0 FT |
704 | sge_count = scsi_dma_map(scp); |
705 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 706 | |
155d98f0 FT |
707 | if (sge_count) { |
708 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
709 | mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); | |
710 | mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); | |
711 | } | |
c4a3e0a5 | 712 | } |
c4a3e0a5 BS |
713 | return sge_count; |
714 | } | |
715 | ||
f4c9a131 YB |
716 | /** |
717 | * megasas_make_sgl_skinny - Prepares IEEE SGL | |
718 | * @instance: Adapter soft state | |
719 | * @scp: SCSI command from the mid-layer | |
720 | * @mfi_sgl: SGL to be filled in | |
721 | * | |
722 | * If successful, this function returns the number of SG elements. Otherwise, | |
723 | * it returnes -1. | |
724 | */ | |
725 | static int | |
726 | megasas_make_sgl_skinny(struct megasas_instance *instance, | |
727 | struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) | |
728 | { | |
729 | int i; | |
730 | int sge_count; | |
731 | struct scatterlist *os_sgl; | |
732 | ||
733 | sge_count = scsi_dma_map(scp); | |
734 | ||
735 | if (sge_count) { | |
736 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
737 | mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); | |
738 | mfi_sgl->sge_skinny[i].phys_addr = | |
739 | sg_dma_address(os_sgl); | |
740 | } | |
741 | } | |
742 | return sge_count; | |
743 | } | |
744 | ||
b1df99d9 SP |
745 | /** |
746 | * megasas_get_frame_count - Computes the number of frames | |
d532dbe2 | 747 | * @frame_type : type of frame- io or pthru frame |
b1df99d9 SP |
748 | * @sge_count : number of sg elements |
749 | * | |
750 | * Returns the number of frames required for numnber of sge's (sge_count) | |
751 | */ | |
752 | ||
f4c9a131 YB |
753 | static u32 megasas_get_frame_count(struct megasas_instance *instance, |
754 | u8 sge_count, u8 frame_type) | |
b1df99d9 SP |
755 | { |
756 | int num_cnt; | |
757 | int sge_bytes; | |
758 | u32 sge_sz; | |
759 | u32 frame_count=0; | |
760 | ||
761 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
762 | sizeof(struct megasas_sge32); | |
763 | ||
f4c9a131 YB |
764 | if (instance->flag_ieee) { |
765 | sge_sz = sizeof(struct megasas_sge_skinny); | |
766 | } | |
767 | ||
b1df99d9 | 768 | /* |
d532dbe2 | 769 | * Main frame can contain 2 SGEs for 64-bit SGLs and |
770 | * 3 SGEs for 32-bit SGLs for ldio & | |
771 | * 1 SGEs for 64-bit SGLs and | |
772 | * 2 SGEs for 32-bit SGLs for pthru frame | |
773 | */ | |
774 | if (unlikely(frame_type == PTHRU_FRAME)) { | |
f4c9a131 YB |
775 | if (instance->flag_ieee == 1) { |
776 | num_cnt = sge_count - 1; | |
777 | } else if (IS_DMA64) | |
d532dbe2 | 778 | num_cnt = sge_count - 1; |
779 | else | |
780 | num_cnt = sge_count - 2; | |
781 | } else { | |
f4c9a131 YB |
782 | if (instance->flag_ieee == 1) { |
783 | num_cnt = sge_count - 1; | |
784 | } else if (IS_DMA64) | |
d532dbe2 | 785 | num_cnt = sge_count - 2; |
786 | else | |
787 | num_cnt = sge_count - 3; | |
788 | } | |
b1df99d9 SP |
789 | |
790 | if(num_cnt>0){ | |
791 | sge_bytes = sge_sz * num_cnt; | |
792 | ||
793 | frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + | |
794 | ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; | |
795 | } | |
796 | /* Main frame */ | |
797 | frame_count +=1; | |
798 | ||
799 | if (frame_count > 7) | |
800 | frame_count = 8; | |
801 | return frame_count; | |
802 | } | |
803 | ||
c4a3e0a5 BS |
804 | /** |
805 | * megasas_build_dcdb - Prepares a direct cdb (DCDB) command | |
806 | * @instance: Adapter soft state | |
807 | * @scp: SCSI command | |
808 | * @cmd: Command to be prepared in | |
809 | * | |
810 | * This function prepares CDB commands. These are typcially pass-through | |
811 | * commands to the devices. | |
812 | */ | |
858119e1 | 813 | static int |
c4a3e0a5 BS |
814 | megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, |
815 | struct megasas_cmd *cmd) | |
816 | { | |
c4a3e0a5 BS |
817 | u32 is_logical; |
818 | u32 device_id; | |
819 | u16 flags = 0; | |
820 | struct megasas_pthru_frame *pthru; | |
821 | ||
822 | is_logical = MEGASAS_IS_LOGICAL(scp); | |
823 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
824 | pthru = (struct megasas_pthru_frame *)cmd->frame; | |
825 | ||
826 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
827 | flags = MFI_FRAME_DIR_WRITE; | |
828 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
829 | flags = MFI_FRAME_DIR_READ; | |
830 | else if (scp->sc_data_direction == PCI_DMA_NONE) | |
831 | flags = MFI_FRAME_DIR_NONE; | |
832 | ||
f4c9a131 YB |
833 | if (instance->flag_ieee == 1) { |
834 | flags |= MFI_FRAME_IEEE; | |
835 | } | |
836 | ||
c4a3e0a5 BS |
837 | /* |
838 | * Prepare the DCDB frame | |
839 | */ | |
840 | pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; | |
841 | pthru->cmd_status = 0x0; | |
842 | pthru->scsi_status = 0x0; | |
843 | pthru->target_id = device_id; | |
844 | pthru->lun = scp->device->lun; | |
845 | pthru->cdb_len = scp->cmd_len; | |
846 | pthru->timeout = 0; | |
780a3762 | 847 | pthru->pad_0 = 0; |
c4a3e0a5 | 848 | pthru->flags = flags; |
155d98f0 | 849 | pthru->data_xfer_len = scsi_bufflen(scp); |
c4a3e0a5 BS |
850 | |
851 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
852 | ||
8d568253 YB |
853 | /* |
854 | * If the command is for the tape device, set the | |
855 | * pthru timeout to the os layer timeout value. | |
856 | */ | |
857 | if (scp->device->type == TYPE_TAPE) { | |
858 | if ((scp->request->timeout / HZ) > 0xFFFF) | |
859 | pthru->timeout = 0xFFFF; | |
860 | else | |
861 | pthru->timeout = scp->request->timeout / HZ; | |
862 | } | |
863 | ||
c4a3e0a5 BS |
864 | /* |
865 | * Construct SGL | |
866 | */ | |
f4c9a131 YB |
867 | if (instance->flag_ieee == 1) { |
868 | pthru->flags |= MFI_FRAME_SGL64; | |
869 | pthru->sge_count = megasas_make_sgl_skinny(instance, scp, | |
870 | &pthru->sgl); | |
871 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
872 | pthru->flags |= MFI_FRAME_SGL64; |
873 | pthru->sge_count = megasas_make_sgl64(instance, scp, | |
874 | &pthru->sgl); | |
875 | } else | |
876 | pthru->sge_count = megasas_make_sgl32(instance, scp, | |
877 | &pthru->sgl); | |
878 | ||
bdc6fb8d YB |
879 | if (pthru->sge_count > instance->max_num_sge) { |
880 | printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", | |
881 | pthru->sge_count); | |
882 | return 0; | |
883 | } | |
884 | ||
c4a3e0a5 BS |
885 | /* |
886 | * Sense info specific | |
887 | */ | |
888 | pthru->sense_len = SCSI_SENSE_BUFFERSIZE; | |
889 | pthru->sense_buf_phys_addr_hi = 0; | |
890 | pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
891 | ||
c4a3e0a5 BS |
892 | /* |
893 | * Compute the total number of frames this command consumes. FW uses | |
894 | * this number to pull sufficient number of frames from host memory. | |
895 | */ | |
f4c9a131 | 896 | cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, |
d532dbe2 | 897 | PTHRU_FRAME); |
c4a3e0a5 BS |
898 | |
899 | return cmd->frame_count; | |
900 | } | |
901 | ||
902 | /** | |
903 | * megasas_build_ldio - Prepares IOs to logical devices | |
904 | * @instance: Adapter soft state | |
905 | * @scp: SCSI command | |
fd589a8f | 906 | * @cmd: Command to be prepared |
c4a3e0a5 BS |
907 | * |
908 | * Frames (and accompanying SGLs) for regular SCSI IOs use this function. | |
909 | */ | |
858119e1 | 910 | static int |
c4a3e0a5 BS |
911 | megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, |
912 | struct megasas_cmd *cmd) | |
913 | { | |
c4a3e0a5 BS |
914 | u32 device_id; |
915 | u8 sc = scp->cmnd[0]; | |
916 | u16 flags = 0; | |
917 | struct megasas_io_frame *ldio; | |
918 | ||
919 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
920 | ldio = (struct megasas_io_frame *)cmd->frame; | |
921 | ||
922 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
923 | flags = MFI_FRAME_DIR_WRITE; | |
924 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
925 | flags = MFI_FRAME_DIR_READ; | |
926 | ||
f4c9a131 YB |
927 | if (instance->flag_ieee == 1) { |
928 | flags |= MFI_FRAME_IEEE; | |
929 | } | |
930 | ||
c4a3e0a5 | 931 | /* |
b1df99d9 | 932 | * Prepare the Logical IO frame: 2nd bit is zero for all read cmds |
c4a3e0a5 BS |
933 | */ |
934 | ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; | |
935 | ldio->cmd_status = 0x0; | |
936 | ldio->scsi_status = 0x0; | |
937 | ldio->target_id = device_id; | |
938 | ldio->timeout = 0; | |
939 | ldio->reserved_0 = 0; | |
940 | ldio->pad_0 = 0; | |
941 | ldio->flags = flags; | |
942 | ldio->start_lba_hi = 0; | |
943 | ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; | |
944 | ||
945 | /* | |
946 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
947 | */ | |
948 | if (scp->cmd_len == 6) { | |
949 | ldio->lba_count = (u32) scp->cmnd[4]; | |
950 | ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | | |
951 | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; | |
952 | ||
953 | ldio->start_lba_lo &= 0x1FFFFF; | |
954 | } | |
955 | ||
956 | /* | |
957 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
958 | */ | |
959 | else if (scp->cmd_len == 10) { | |
960 | ldio->lba_count = (u32) scp->cmnd[8] | | |
961 | ((u32) scp->cmnd[7] << 8); | |
962 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
963 | ((u32) scp->cmnd[3] << 16) | | |
964 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
965 | } | |
966 | ||
967 | /* | |
968 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
969 | */ | |
970 | else if (scp->cmd_len == 12) { | |
971 | ldio->lba_count = ((u32) scp->cmnd[6] << 24) | | |
972 | ((u32) scp->cmnd[7] << 16) | | |
973 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
974 | ||
975 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
976 | ((u32) scp->cmnd[3] << 16) | | |
977 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
978 | } | |
979 | ||
980 | /* | |
981 | * 16-byte READ(0x88) or WRITE(0x8A) cdb | |
982 | */ | |
983 | else if (scp->cmd_len == 16) { | |
984 | ldio->lba_count = ((u32) scp->cmnd[10] << 24) | | |
985 | ((u32) scp->cmnd[11] << 16) | | |
986 | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; | |
987 | ||
988 | ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | | |
989 | ((u32) scp->cmnd[7] << 16) | | |
990 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
991 | ||
992 | ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | | |
993 | ((u32) scp->cmnd[3] << 16) | | |
994 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
995 | ||
996 | } | |
997 | ||
998 | /* | |
999 | * Construct SGL | |
1000 | */ | |
f4c9a131 YB |
1001 | if (instance->flag_ieee) { |
1002 | ldio->flags |= MFI_FRAME_SGL64; | |
1003 | ldio->sge_count = megasas_make_sgl_skinny(instance, scp, | |
1004 | &ldio->sgl); | |
1005 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
1006 | ldio->flags |= MFI_FRAME_SGL64; |
1007 | ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); | |
1008 | } else | |
1009 | ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); | |
1010 | ||
bdc6fb8d YB |
1011 | if (ldio->sge_count > instance->max_num_sge) { |
1012 | printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", | |
1013 | ldio->sge_count); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
c4a3e0a5 BS |
1017 | /* |
1018 | * Sense info specific | |
1019 | */ | |
1020 | ldio->sense_len = SCSI_SENSE_BUFFERSIZE; | |
1021 | ldio->sense_buf_phys_addr_hi = 0; | |
1022 | ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
1023 | ||
b1df99d9 SP |
1024 | /* |
1025 | * Compute the total number of frames this command consumes. FW uses | |
1026 | * this number to pull sufficient number of frames from host memory. | |
1027 | */ | |
f4c9a131 YB |
1028 | cmd->frame_count = megasas_get_frame_count(instance, |
1029 | ldio->sge_count, IO_FRAME); | |
c4a3e0a5 BS |
1030 | |
1031 | return cmd->frame_count; | |
1032 | } | |
1033 | ||
1034 | /** | |
cb59aa6a SP |
1035 | * megasas_is_ldio - Checks if the cmd is for logical drive |
1036 | * @scmd: SCSI command | |
1037 | * | |
1038 | * Called by megasas_queue_command to find out if the command to be queued | |
1039 | * is a logical drive command | |
c4a3e0a5 | 1040 | */ |
cb59aa6a | 1041 | static inline int megasas_is_ldio(struct scsi_cmnd *cmd) |
c4a3e0a5 | 1042 | { |
cb59aa6a SP |
1043 | if (!MEGASAS_IS_LOGICAL(cmd)) |
1044 | return 0; | |
1045 | switch (cmd->cmnd[0]) { | |
1046 | case READ_10: | |
1047 | case WRITE_10: | |
1048 | case READ_12: | |
1049 | case WRITE_12: | |
1050 | case READ_6: | |
1051 | case WRITE_6: | |
1052 | case READ_16: | |
1053 | case WRITE_16: | |
1054 | return 1; | |
1055 | default: | |
1056 | return 0; | |
c4a3e0a5 | 1057 | } |
c4a3e0a5 BS |
1058 | } |
1059 | ||
658dcedb SP |
1060 | /** |
1061 | * megasas_dump_pending_frames - Dumps the frame address of all pending cmds | |
1062 | * in FW | |
1063 | * @instance: Adapter soft state | |
1064 | */ | |
1065 | static inline void | |
1066 | megasas_dump_pending_frames(struct megasas_instance *instance) | |
1067 | { | |
1068 | struct megasas_cmd *cmd; | |
1069 | int i,n; | |
1070 | union megasas_sgl *mfi_sgl; | |
1071 | struct megasas_io_frame *ldio; | |
1072 | struct megasas_pthru_frame *pthru; | |
1073 | u32 sgcount; | |
1074 | u32 max_cmd = instance->max_fw_cmds; | |
1075 | ||
1076 | printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); | |
1077 | printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); | |
1078 | if (IS_DMA64) | |
1079 | printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); | |
1080 | else | |
1081 | printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); | |
1082 | ||
1083 | printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); | |
1084 | for (i = 0; i < max_cmd; i++) { | |
1085 | cmd = instance->cmd_list[i]; | |
1086 | if(!cmd->scmd) | |
1087 | continue; | |
1088 | printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); | |
1089 | if (megasas_is_ldio(cmd->scmd)){ | |
1090 | ldio = (struct megasas_io_frame *)cmd->frame; | |
1091 | mfi_sgl = &ldio->sgl; | |
1092 | sgcount = ldio->sge_count; | |
1093 | 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); | |
1094 | } | |
1095 | else { | |
1096 | pthru = (struct megasas_pthru_frame *) cmd->frame; | |
1097 | mfi_sgl = &pthru->sgl; | |
1098 | sgcount = pthru->sge_count; | |
1099 | 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); | |
1100 | } | |
1101 | if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ | |
1102 | for (n = 0; n < sgcount; n++){ | |
1103 | if (IS_DMA64) | |
1104 | 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) ; | |
1105 | else | |
1106 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; | |
1107 | } | |
1108 | } | |
1109 | printk(KERN_ERR "\n"); | |
1110 | } /*for max_cmd*/ | |
1111 | printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); | |
1112 | for (i = 0; i < max_cmd; i++) { | |
1113 | ||
1114 | cmd = instance->cmd_list[i]; | |
1115 | ||
1116 | if(cmd->sync_cmd == 1){ | |
1117 | printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); | |
1118 | } | |
1119 | } | |
1120 | printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); | |
1121 | } | |
1122 | ||
c4a3e0a5 BS |
1123 | /** |
1124 | * megasas_queue_command - Queue entry point | |
1125 | * @scmd: SCSI command to be queued | |
1126 | * @done: Callback entry point | |
1127 | */ | |
1128 | static int | |
1129 | megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) | |
1130 | { | |
1131 | u32 frame_count; | |
c4a3e0a5 BS |
1132 | struct megasas_cmd *cmd; |
1133 | struct megasas_instance *instance; | |
1134 | ||
1135 | instance = (struct megasas_instance *) | |
1136 | scmd->device->host->hostdata; | |
af37acfb SP |
1137 | |
1138 | /* Don't process if we have already declared adapter dead */ | |
1139 | if (instance->hw_crit_error) | |
1140 | return SCSI_MLQUEUE_HOST_BUSY; | |
1141 | ||
c4a3e0a5 BS |
1142 | scmd->scsi_done = done; |
1143 | scmd->result = 0; | |
1144 | ||
cb59aa6a SP |
1145 | if (MEGASAS_IS_LOGICAL(scmd) && |
1146 | (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { | |
1147 | scmd->result = DID_BAD_TARGET << 16; | |
1148 | goto out_done; | |
c4a3e0a5 BS |
1149 | } |
1150 | ||
02b01e01 SP |
1151 | switch (scmd->cmnd[0]) { |
1152 | case SYNCHRONIZE_CACHE: | |
1153 | /* | |
1154 | * FW takes care of flush cache on its own | |
1155 | * No need to send it down | |
1156 | */ | |
1157 | scmd->result = DID_OK << 16; | |
1158 | goto out_done; | |
1159 | default: | |
1160 | break; | |
1161 | } | |
1162 | ||
cb59aa6a SP |
1163 | cmd = megasas_get_cmd(instance); |
1164 | if (!cmd) | |
1165 | return SCSI_MLQUEUE_HOST_BUSY; | |
1166 | ||
1167 | /* | |
1168 | * Logical drive command | |
1169 | */ | |
1170 | if (megasas_is_ldio(scmd)) | |
1171 | frame_count = megasas_build_ldio(instance, scmd, cmd); | |
1172 | else | |
1173 | frame_count = megasas_build_dcdb(instance, scmd, cmd); | |
1174 | ||
1175 | if (!frame_count) | |
1176 | goto out_return_cmd; | |
1177 | ||
c4a3e0a5 | 1178 | cmd->scmd = scmd; |
05e9ebbe | 1179 | scmd->SCp.ptr = (char *)cmd; |
c4a3e0a5 BS |
1180 | |
1181 | /* | |
1182 | * Issue the command to the FW | |
1183 | */ | |
e4a082c7 | 1184 | atomic_inc(&instance->fw_outstanding); |
c4a3e0a5 | 1185 | |
0c79e681 YB |
1186 | instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, |
1187 | cmd->frame_count-1, instance->reg_set); | |
ad84db2e | 1188 | /* |
1189 | * Check if we have pend cmds to be completed | |
1190 | */ | |
1191 | if (poll_mode_io && atomic_read(&instance->fw_outstanding)) | |
1192 | tasklet_schedule(&instance->isr_tasklet); | |
1193 | ||
c4a3e0a5 BS |
1194 | |
1195 | return 0; | |
cb59aa6a SP |
1196 | |
1197 | out_return_cmd: | |
1198 | megasas_return_cmd(instance, cmd); | |
1199 | out_done: | |
1200 | done(scmd); | |
1201 | return 0; | |
c4a3e0a5 BS |
1202 | } |
1203 | ||
044833b5 YB |
1204 | static struct megasas_instance *megasas_lookup_instance(u16 host_no) |
1205 | { | |
1206 | int i; | |
1207 | ||
1208 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
1209 | ||
1210 | if ((megasas_mgmt_info.instance[i]) && | |
1211 | (megasas_mgmt_info.instance[i]->host->host_no == host_no)) | |
1212 | return megasas_mgmt_info.instance[i]; | |
1213 | } | |
1214 | ||
1215 | return NULL; | |
1216 | } | |
1217 | ||
147aab6a CH |
1218 | static int megasas_slave_configure(struct scsi_device *sdev) |
1219 | { | |
044833b5 YB |
1220 | u16 pd_index = 0; |
1221 | struct megasas_instance *instance ; | |
1222 | ||
1223 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1224 | ||
147aab6a | 1225 | /* |
044833b5 YB |
1226 | * Don't export physical disk devices to the disk driver. |
1227 | * | |
1228 | * FIXME: Currently we don't export them to the midlayer at all. | |
1229 | * That will be fixed once LSI engineers have audited the | |
1230 | * firmware for possible issues. | |
1231 | */ | |
1232 | if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && | |
1233 | sdev->type == TYPE_DISK) { | |
1234 | pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1235 | sdev->id; | |
1236 | if (instance->pd_list[pd_index].driveState == | |
1237 | MR_PD_STATE_SYSTEM) { | |
1238 | blk_queue_rq_timeout(sdev->request_queue, | |
1239 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1240 | return 0; | |
1241 | } | |
147aab6a | 1242 | return -ENXIO; |
044833b5 | 1243 | } |
e5b3a65f CH |
1244 | |
1245 | /* | |
044833b5 YB |
1246 | * The RAID firmware may require extended timeouts. |
1247 | */ | |
1248 | blk_queue_rq_timeout(sdev->request_queue, | |
1249 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1250 | return 0; | |
1251 | } | |
1252 | ||
1253 | static int megasas_slave_alloc(struct scsi_device *sdev) | |
1254 | { | |
1255 | u16 pd_index = 0; | |
1256 | struct megasas_instance *instance ; | |
1257 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1258 | if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && | |
1259 | (sdev->type == TYPE_DISK)) { | |
1260 | /* | |
1261 | * Open the OS scan to the SYSTEM PD | |
1262 | */ | |
1263 | pd_index = | |
1264 | (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1265 | sdev->id; | |
1266 | if ((instance->pd_list[pd_index].driveState == | |
1267 | MR_PD_STATE_SYSTEM) && | |
1268 | (instance->pd_list[pd_index].driveType == | |
1269 | TYPE_DISK)) { | |
1270 | return 0; | |
1271 | } | |
1272 | return -ENXIO; | |
1273 | } | |
147aab6a CH |
1274 | return 0; |
1275 | } | |
1276 | ||
7343eb65 | 1277 | /** |
1278 | * megasas_complete_cmd_dpc - Returns FW's controller structure | |
1279 | * @instance_addr: Address of adapter soft state | |
1280 | * | |
1281 | * Tasklet to complete cmds | |
1282 | */ | |
1283 | static void megasas_complete_cmd_dpc(unsigned long instance_addr) | |
1284 | { | |
1285 | u32 producer; | |
1286 | u32 consumer; | |
1287 | u32 context; | |
1288 | struct megasas_cmd *cmd; | |
1289 | struct megasas_instance *instance = | |
1290 | (struct megasas_instance *)instance_addr; | |
1291 | unsigned long flags; | |
1292 | ||
1293 | /* If we have already declared adapter dead, donot complete cmds */ | |
1294 | if (instance->hw_crit_error) | |
1295 | return; | |
1296 | ||
1297 | spin_lock_irqsave(&instance->completion_lock, flags); | |
1298 | ||
1299 | producer = *instance->producer; | |
1300 | consumer = *instance->consumer; | |
1301 | ||
1302 | while (consumer != producer) { | |
1303 | context = instance->reply_queue[consumer]; | |
1304 | ||
1305 | cmd = instance->cmd_list[context]; | |
1306 | ||
1307 | megasas_complete_cmd(instance, cmd, DID_OK); | |
1308 | ||
1309 | consumer++; | |
1310 | if (consumer == (instance->max_fw_cmds + 1)) { | |
1311 | consumer = 0; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | *instance->consumer = producer; | |
1316 | ||
1317 | spin_unlock_irqrestore(&instance->completion_lock, flags); | |
1318 | ||
1319 | /* | |
1320 | * Check if we can restore can_queue | |
1321 | */ | |
1322 | if (instance->flag & MEGASAS_FW_BUSY | |
1323 | && time_after(jiffies, instance->last_time + 5 * HZ) | |
1324 | && atomic_read(&instance->fw_outstanding) < 17) { | |
1325 | ||
1326 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1327 | instance->flag &= ~MEGASAS_FW_BUSY; | |
7bebf5c7 YB |
1328 | if ((instance->pdev->device == |
1329 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1330 | (instance->pdev->device == | |
1331 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1332 | instance->host->can_queue = | |
1333 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
1334 | } else | |
1335 | instance->host->can_queue = | |
7343eb65 | 1336 | instance->max_fw_cmds - MEGASAS_INT_CMDS; |
1337 | ||
1338 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
1339 | } | |
1340 | } | |
1341 | ||
c4a3e0a5 BS |
1342 | /** |
1343 | * megasas_wait_for_outstanding - Wait for all outstanding cmds | |
1344 | * @instance: Adapter soft state | |
1345 | * | |
1346 | * This function waits for upto MEGASAS_RESET_WAIT_TIME seconds for FW to | |
1347 | * complete all its outstanding commands. Returns error if one or more IOs | |
1348 | * are pending after this time period. It also marks the controller dead. | |
1349 | */ | |
1350 | static int megasas_wait_for_outstanding(struct megasas_instance *instance) | |
1351 | { | |
1352 | int i; | |
1353 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; | |
1354 | ||
1355 | for (i = 0; i < wait_time; i++) { | |
1356 | ||
e4a082c7 SP |
1357 | int outstanding = atomic_read(&instance->fw_outstanding); |
1358 | ||
1359 | if (!outstanding) | |
c4a3e0a5 BS |
1360 | break; |
1361 | ||
1362 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
1363 | printk(KERN_NOTICE "megasas: [%2d]waiting for %d " | |
e4a082c7 | 1364 | "commands to complete\n",i,outstanding); |
7343eb65 | 1365 | /* |
1366 | * Call cmd completion routine. Cmd to be | |
1367 | * be completed directly without depending on isr. | |
1368 | */ | |
1369 | megasas_complete_cmd_dpc((unsigned long)instance); | |
c4a3e0a5 BS |
1370 | } |
1371 | ||
1372 | msleep(1000); | |
1373 | } | |
1374 | ||
e4a082c7 | 1375 | if (atomic_read(&instance->fw_outstanding)) { |
e3bbff9f SP |
1376 | /* |
1377 | * Send signal to FW to stop processing any pending cmds. | |
1378 | * The controller will be taken offline by the OS now. | |
1379 | */ | |
0c79e681 YB |
1380 | if ((instance->pdev->device == |
1381 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1382 | (instance->pdev->device == | |
1383 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1384 | writel(MFI_STOP_ADP, | |
1385 | &instance->reg_set->reserved_0[0]); | |
1386 | } else { | |
1387 | writel(MFI_STOP_ADP, | |
e3bbff9f | 1388 | &instance->reg_set->inbound_doorbell); |
0c79e681 | 1389 | } |
658dcedb | 1390 | megasas_dump_pending_frames(instance); |
c4a3e0a5 BS |
1391 | instance->hw_crit_error = 1; |
1392 | return FAILED; | |
1393 | } | |
1394 | ||
1395 | return SUCCESS; | |
1396 | } | |
1397 | ||
1398 | /** | |
1399 | * megasas_generic_reset - Generic reset routine | |
1400 | * @scmd: Mid-layer SCSI command | |
1401 | * | |
1402 | * This routine implements a generic reset handler for device, bus and host | |
1403 | * reset requests. Device, bus and host specific reset handlers can use this | |
1404 | * function after they do their specific tasks. | |
1405 | */ | |
1406 | static int megasas_generic_reset(struct scsi_cmnd *scmd) | |
1407 | { | |
1408 | int ret_val; | |
1409 | struct megasas_instance *instance; | |
1410 | ||
1411 | instance = (struct megasas_instance *)scmd->device->host->hostdata; | |
1412 | ||
05e9ebbe SP |
1413 | scmd_printk(KERN_NOTICE, scmd, "megasas: RESET -%ld cmd=%x retries=%x\n", |
1414 | scmd->serial_number, scmd->cmnd[0], scmd->retries); | |
c4a3e0a5 BS |
1415 | |
1416 | if (instance->hw_crit_error) { | |
1417 | printk(KERN_ERR "megasas: cannot recover from previous reset " | |
1418 | "failures\n"); | |
1419 | return FAILED; | |
1420 | } | |
1421 | ||
c4a3e0a5 | 1422 | ret_val = megasas_wait_for_outstanding(instance); |
c4a3e0a5 BS |
1423 | if (ret_val == SUCCESS) |
1424 | printk(KERN_NOTICE "megasas: reset successful \n"); | |
1425 | else | |
1426 | printk(KERN_ERR "megasas: failed to do reset\n"); | |
1427 | ||
c4a3e0a5 BS |
1428 | return ret_val; |
1429 | } | |
1430 | ||
05e9ebbe SP |
1431 | /** |
1432 | * megasas_reset_timer - quiesce the adapter if required | |
1433 | * @scmd: scsi cmnd | |
1434 | * | |
1435 | * Sets the FW busy flag and reduces the host->can_queue if the | |
1436 | * cmd has not been completed within the timeout period. | |
1437 | */ | |
1438 | static enum | |
242f9dcb | 1439 | blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) |
05e9ebbe SP |
1440 | { |
1441 | struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr; | |
1442 | struct megasas_instance *instance; | |
1443 | unsigned long flags; | |
1444 | ||
1445 | if (time_after(jiffies, scmd->jiffies_at_alloc + | |
1446 | (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { | |
242f9dcb | 1447 | return BLK_EH_NOT_HANDLED; |
05e9ebbe SP |
1448 | } |
1449 | ||
1450 | instance = cmd->instance; | |
1451 | if (!(instance->flag & MEGASAS_FW_BUSY)) { | |
1452 | /* FW is busy, throttle IO */ | |
1453 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1454 | ||
1455 | instance->host->can_queue = 16; | |
1456 | instance->last_time = jiffies; | |
1457 | instance->flag |= MEGASAS_FW_BUSY; | |
1458 | ||
1459 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
1460 | } | |
242f9dcb | 1461 | return BLK_EH_RESET_TIMER; |
05e9ebbe SP |
1462 | } |
1463 | ||
c4a3e0a5 BS |
1464 | /** |
1465 | * megasas_reset_device - Device reset handler entry point | |
1466 | */ | |
1467 | static int megasas_reset_device(struct scsi_cmnd *scmd) | |
1468 | { | |
1469 | int ret; | |
1470 | ||
1471 | /* | |
1472 | * First wait for all commands to complete | |
1473 | */ | |
1474 | ret = megasas_generic_reset(scmd); | |
1475 | ||
1476 | return ret; | |
1477 | } | |
1478 | ||
1479 | /** | |
1480 | * megasas_reset_bus_host - Bus & host reset handler entry point | |
1481 | */ | |
1482 | static int megasas_reset_bus_host(struct scsi_cmnd *scmd) | |
1483 | { | |
1484 | int ret; | |
1485 | ||
1486 | /* | |
80682fa9 | 1487 | * First wait for all commands to complete |
c4a3e0a5 BS |
1488 | */ |
1489 | ret = megasas_generic_reset(scmd); | |
1490 | ||
1491 | return ret; | |
1492 | } | |
1493 | ||
cf62a0a5 SP |
1494 | /** |
1495 | * megasas_bios_param - Returns disk geometry for a disk | |
1496 | * @sdev: device handle | |
1497 | * @bdev: block device | |
1498 | * @capacity: drive capacity | |
1499 | * @geom: geometry parameters | |
1500 | */ | |
1501 | static int | |
1502 | megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
1503 | sector_t capacity, int geom[]) | |
1504 | { | |
1505 | int heads; | |
1506 | int sectors; | |
1507 | sector_t cylinders; | |
1508 | unsigned long tmp; | |
1509 | /* Default heads (64) & sectors (32) */ | |
1510 | heads = 64; | |
1511 | sectors = 32; | |
1512 | ||
1513 | tmp = heads * sectors; | |
1514 | cylinders = capacity; | |
1515 | ||
1516 | sector_div(cylinders, tmp); | |
1517 | ||
1518 | /* | |
1519 | * Handle extended translation size for logical drives > 1Gb | |
1520 | */ | |
1521 | ||
1522 | if (capacity >= 0x200000) { | |
1523 | heads = 255; | |
1524 | sectors = 63; | |
1525 | tmp = heads*sectors; | |
1526 | cylinders = capacity; | |
1527 | sector_div(cylinders, tmp); | |
1528 | } | |
1529 | ||
1530 | geom[0] = heads; | |
1531 | geom[1] = sectors; | |
1532 | geom[2] = cylinders; | |
1533 | ||
1534 | return 0; | |
1535 | } | |
1536 | ||
7e8a75f4 YB |
1537 | static void megasas_aen_polling(struct work_struct *work); |
1538 | ||
c4a3e0a5 BS |
1539 | /** |
1540 | * megasas_service_aen - Processes an event notification | |
1541 | * @instance: Adapter soft state | |
1542 | * @cmd: AEN command completed by the ISR | |
1543 | * | |
1544 | * For AEN, driver sends a command down to FW that is held by the FW till an | |
1545 | * event occurs. When an event of interest occurs, FW completes the command | |
1546 | * that it was previously holding. | |
1547 | * | |
1548 | * This routines sends SIGIO signal to processes that have registered with the | |
1549 | * driver for AEN. | |
1550 | */ | |
1551 | static void | |
1552 | megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
1553 | { | |
c3518837 | 1554 | unsigned long flags; |
c4a3e0a5 BS |
1555 | /* |
1556 | * Don't signal app if it is just an aborted previously registered aen | |
1557 | */ | |
c3518837 YB |
1558 | if ((!cmd->abort_aen) && (instance->unload == 0)) { |
1559 | spin_lock_irqsave(&poll_aen_lock, flags); | |
1560 | megasas_poll_wait_aen = 1; | |
1561 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
1562 | wake_up(&megasas_poll_wait); | |
c4a3e0a5 | 1563 | kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); |
c3518837 | 1564 | } |
c4a3e0a5 BS |
1565 | else |
1566 | cmd->abort_aen = 0; | |
1567 | ||
1568 | instance->aen_cmd = NULL; | |
1569 | megasas_return_cmd(instance, cmd); | |
7e8a75f4 YB |
1570 | |
1571 | if (instance->unload == 0) { | |
1572 | struct megasas_aen_event *ev; | |
1573 | ev = kzalloc(sizeof(*ev), GFP_ATOMIC); | |
1574 | if (!ev) { | |
1575 | printk(KERN_ERR "megasas_service_aen: out of memory\n"); | |
1576 | } else { | |
1577 | ev->instance = instance; | |
1578 | instance->ev = ev; | |
1579 | INIT_WORK(&ev->hotplug_work, megasas_aen_polling); | |
1580 | schedule_delayed_work( | |
1581 | (struct delayed_work *)&ev->hotplug_work, 0); | |
1582 | } | |
1583 | } | |
c4a3e0a5 BS |
1584 | } |
1585 | ||
1586 | /* | |
1587 | * Scsi host template for megaraid_sas driver | |
1588 | */ | |
1589 | static struct scsi_host_template megasas_template = { | |
1590 | ||
1591 | .module = THIS_MODULE, | |
f28cd7cf | 1592 | .name = "LSI SAS based MegaRAID driver", |
c4a3e0a5 | 1593 | .proc_name = "megaraid_sas", |
147aab6a | 1594 | .slave_configure = megasas_slave_configure, |
044833b5 | 1595 | .slave_alloc = megasas_slave_alloc, |
c4a3e0a5 BS |
1596 | .queuecommand = megasas_queue_command, |
1597 | .eh_device_reset_handler = megasas_reset_device, | |
1598 | .eh_bus_reset_handler = megasas_reset_bus_host, | |
1599 | .eh_host_reset_handler = megasas_reset_bus_host, | |
05e9ebbe | 1600 | .eh_timed_out = megasas_reset_timer, |
cf62a0a5 | 1601 | .bios_param = megasas_bios_param, |
c4a3e0a5 BS |
1602 | .use_clustering = ENABLE_CLUSTERING, |
1603 | }; | |
1604 | ||
1605 | /** | |
1606 | * megasas_complete_int_cmd - Completes an internal command | |
1607 | * @instance: Adapter soft state | |
1608 | * @cmd: Command to be completed | |
1609 | * | |
1610 | * The megasas_issue_blocked_cmd() function waits for a command to complete | |
1611 | * after it issues a command. This function wakes up that waiting routine by | |
1612 | * calling wake_up() on the wait queue. | |
1613 | */ | |
1614 | static void | |
1615 | megasas_complete_int_cmd(struct megasas_instance *instance, | |
1616 | struct megasas_cmd *cmd) | |
1617 | { | |
1618 | cmd->cmd_status = cmd->frame->io.cmd_status; | |
1619 | ||
1620 | if (cmd->cmd_status == ENODATA) { | |
1621 | cmd->cmd_status = 0; | |
1622 | } | |
1623 | wake_up(&instance->int_cmd_wait_q); | |
1624 | } | |
1625 | ||
1626 | /** | |
1627 | * megasas_complete_abort - Completes aborting a command | |
1628 | * @instance: Adapter soft state | |
1629 | * @cmd: Cmd that was issued to abort another cmd | |
1630 | * | |
1631 | * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q | |
1632 | * after it issues an abort on a previously issued command. This function | |
1633 | * wakes up all functions waiting on the same wait queue. | |
1634 | */ | |
1635 | static void | |
1636 | megasas_complete_abort(struct megasas_instance *instance, | |
1637 | struct megasas_cmd *cmd) | |
1638 | { | |
1639 | if (cmd->sync_cmd) { | |
1640 | cmd->sync_cmd = 0; | |
1641 | cmd->cmd_status = 0; | |
1642 | wake_up(&instance->abort_cmd_wait_q); | |
1643 | } | |
1644 | ||
1645 | return; | |
1646 | } | |
1647 | ||
c4a3e0a5 BS |
1648 | /** |
1649 | * megasas_complete_cmd - Completes a command | |
1650 | * @instance: Adapter soft state | |
1651 | * @cmd: Command to be completed | |
1652 | * @alt_status: If non-zero, use this value as status to | |
1653 | * SCSI mid-layer instead of the value returned | |
1654 | * by the FW. This should be used if caller wants | |
1655 | * an alternate status (as in the case of aborted | |
1656 | * commands) | |
1657 | */ | |
858119e1 | 1658 | static void |
c4a3e0a5 BS |
1659 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
1660 | u8 alt_status) | |
1661 | { | |
1662 | int exception = 0; | |
1663 | struct megasas_header *hdr = &cmd->frame->hdr; | |
c3518837 | 1664 | unsigned long flags; |
c4a3e0a5 | 1665 | |
05e9ebbe SP |
1666 | if (cmd->scmd) |
1667 | cmd->scmd->SCp.ptr = NULL; | |
c4a3e0a5 BS |
1668 | |
1669 | switch (hdr->cmd) { | |
1670 | ||
1671 | case MFI_CMD_PD_SCSI_IO: | |
1672 | case MFI_CMD_LD_SCSI_IO: | |
1673 | ||
1674 | /* | |
1675 | * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been | |
1676 | * issued either through an IO path or an IOCTL path. If it | |
1677 | * was via IOCTL, we will send it to internal completion. | |
1678 | */ | |
1679 | if (cmd->sync_cmd) { | |
1680 | cmd->sync_cmd = 0; | |
1681 | megasas_complete_int_cmd(instance, cmd); | |
1682 | break; | |
1683 | } | |
1684 | ||
c4a3e0a5 BS |
1685 | case MFI_CMD_LD_READ: |
1686 | case MFI_CMD_LD_WRITE: | |
1687 | ||
1688 | if (alt_status) { | |
1689 | cmd->scmd->result = alt_status << 16; | |
1690 | exception = 1; | |
1691 | } | |
1692 | ||
1693 | if (exception) { | |
1694 | ||
e4a082c7 | 1695 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 1696 | |
155d98f0 | 1697 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
1698 | cmd->scmd->scsi_done(cmd->scmd); |
1699 | megasas_return_cmd(instance, cmd); | |
1700 | ||
1701 | break; | |
1702 | } | |
1703 | ||
1704 | switch (hdr->cmd_status) { | |
1705 | ||
1706 | case MFI_STAT_OK: | |
1707 | cmd->scmd->result = DID_OK << 16; | |
1708 | break; | |
1709 | ||
1710 | case MFI_STAT_SCSI_IO_FAILED: | |
1711 | case MFI_STAT_LD_INIT_IN_PROGRESS: | |
1712 | cmd->scmd->result = | |
1713 | (DID_ERROR << 16) | hdr->scsi_status; | |
1714 | break; | |
1715 | ||
1716 | case MFI_STAT_SCSI_DONE_WITH_ERROR: | |
1717 | ||
1718 | cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; | |
1719 | ||
1720 | if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { | |
1721 | memset(cmd->scmd->sense_buffer, 0, | |
1722 | SCSI_SENSE_BUFFERSIZE); | |
1723 | memcpy(cmd->scmd->sense_buffer, cmd->sense, | |
1724 | hdr->sense_len); | |
1725 | ||
1726 | cmd->scmd->result |= DRIVER_SENSE << 24; | |
1727 | } | |
1728 | ||
1729 | break; | |
1730 | ||
1731 | case MFI_STAT_LD_OFFLINE: | |
1732 | case MFI_STAT_DEVICE_NOT_FOUND: | |
1733 | cmd->scmd->result = DID_BAD_TARGET << 16; | |
1734 | break; | |
1735 | ||
1736 | default: | |
1737 | printk(KERN_DEBUG "megasas: MFI FW status %#x\n", | |
1738 | hdr->cmd_status); | |
1739 | cmd->scmd->result = DID_ERROR << 16; | |
1740 | break; | |
1741 | } | |
1742 | ||
e4a082c7 | 1743 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 1744 | |
155d98f0 | 1745 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
1746 | cmd->scmd->scsi_done(cmd->scmd); |
1747 | megasas_return_cmd(instance, cmd); | |
1748 | ||
1749 | break; | |
1750 | ||
1751 | case MFI_CMD_SMP: | |
1752 | case MFI_CMD_STP: | |
1753 | case MFI_CMD_DCMD: | |
c3518837 YB |
1754 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || |
1755 | cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { | |
1756 | spin_lock_irqsave(&poll_aen_lock, flags); | |
1757 | megasas_poll_wait_aen = 0; | |
1758 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
1759 | } | |
c4a3e0a5 BS |
1760 | |
1761 | /* | |
1762 | * See if got an event notification | |
1763 | */ | |
1764 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) | |
1765 | megasas_service_aen(instance, cmd); | |
1766 | else | |
1767 | megasas_complete_int_cmd(instance, cmd); | |
1768 | ||
1769 | break; | |
1770 | ||
1771 | case MFI_CMD_ABORT: | |
1772 | /* | |
1773 | * Cmd issued to abort another cmd returned | |
1774 | */ | |
1775 | megasas_complete_abort(instance, cmd); | |
1776 | break; | |
1777 | ||
1778 | default: | |
1779 | printk("megasas: Unknown command completed! [0x%X]\n", | |
1780 | hdr->cmd); | |
1781 | break; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | /** | |
1786 | * megasas_deplete_reply_queue - Processes all completed commands | |
1787 | * @instance: Adapter soft state | |
1788 | * @alt_status: Alternate status to be returned to | |
1789 | * SCSI mid-layer instead of the status | |
1790 | * returned by the FW | |
1791 | */ | |
858119e1 | 1792 | static int |
c4a3e0a5 BS |
1793 | megasas_deplete_reply_queue(struct megasas_instance *instance, u8 alt_status) |
1794 | { | |
c4a3e0a5 BS |
1795 | /* |
1796 | * Check if it is our interrupt | |
1341c939 | 1797 | * Clear the interrupt |
c4a3e0a5 | 1798 | */ |
1341c939 | 1799 | if(instance->instancet->clear_intr(instance->reg_set)) |
c4a3e0a5 | 1800 | return IRQ_NONE; |
c4a3e0a5 | 1801 | |
af37acfb SP |
1802 | if (instance->hw_crit_error) |
1803 | goto out_done; | |
5d018ad0 SP |
1804 | /* |
1805 | * Schedule the tasklet for cmd completion | |
1806 | */ | |
1807 | tasklet_schedule(&instance->isr_tasklet); | |
af37acfb | 1808 | out_done: |
c4a3e0a5 BS |
1809 | return IRQ_HANDLED; |
1810 | } | |
1811 | ||
1812 | /** | |
1813 | * megasas_isr - isr entry point | |
1814 | */ | |
7d12e780 | 1815 | static irqreturn_t megasas_isr(int irq, void *devp) |
c4a3e0a5 BS |
1816 | { |
1817 | return megasas_deplete_reply_queue((struct megasas_instance *)devp, | |
1818 | DID_OK); | |
1819 | } | |
1820 | ||
1821 | /** | |
1822 | * megasas_transition_to_ready - Move the FW to READY state | |
1341c939 | 1823 | * @instance: Adapter soft state |
c4a3e0a5 BS |
1824 | * |
1825 | * During the initialization, FW passes can potentially be in any one of | |
1826 | * several possible states. If the FW in operational, waiting-for-handshake | |
1827 | * states, driver must take steps to bring it to ready state. Otherwise, it | |
1828 | * has to wait for the ready state. | |
1829 | */ | |
1830 | static int | |
1341c939 | 1831 | megasas_transition_to_ready(struct megasas_instance* instance) |
c4a3e0a5 BS |
1832 | { |
1833 | int i; | |
1834 | u8 max_wait; | |
1835 | u32 fw_state; | |
1836 | u32 cur_state; | |
7218df69 | 1837 | u32 abs_state, curr_abs_state; |
c4a3e0a5 | 1838 | |
1341c939 | 1839 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
c4a3e0a5 | 1840 | |
e3bbff9f SP |
1841 | if (fw_state != MFI_STATE_READY) |
1842 | printk(KERN_INFO "megasas: Waiting for FW to come to ready" | |
1843 | " state\n"); | |
1844 | ||
c4a3e0a5 BS |
1845 | while (fw_state != MFI_STATE_READY) { |
1846 | ||
7218df69 YB |
1847 | abs_state = |
1848 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
1849 | ||
c4a3e0a5 BS |
1850 | switch (fw_state) { |
1851 | ||
1852 | case MFI_STATE_FAULT: | |
1853 | ||
1854 | printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); | |
1855 | return -ENODEV; | |
1856 | ||
1857 | case MFI_STATE_WAIT_HANDSHAKE: | |
1858 | /* | |
1859 | * Set the CLR bit in inbound doorbell | |
1860 | */ | |
0c79e681 | 1861 | if ((instance->pdev->device == |
87911122 YB |
1862 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
1863 | (instance->pdev->device == | |
1864 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1865 | ||
1866 | writel( | |
1867 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
1868 | &instance->reg_set->reserved_0[0]); | |
1869 | } else { | |
1870 | writel( | |
1871 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
1872 | &instance->reg_set->inbound_doorbell); | |
1873 | } | |
c4a3e0a5 | 1874 | |
7218df69 | 1875 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1876 | cur_state = MFI_STATE_WAIT_HANDSHAKE; |
1877 | break; | |
1878 | ||
e3bbff9f | 1879 | case MFI_STATE_BOOT_MESSAGE_PENDING: |
87911122 YB |
1880 | if ((instance->pdev->device == |
1881 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1882 | (instance->pdev->device == | |
1883 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1884 | writel(MFI_INIT_HOTPLUG, | |
1885 | &instance->reg_set->reserved_0[0]); | |
1886 | } else | |
1887 | writel(MFI_INIT_HOTPLUG, | |
1888 | &instance->reg_set->inbound_doorbell); | |
e3bbff9f | 1889 | |
7218df69 | 1890 | max_wait = MEGASAS_RESET_WAIT_TIME; |
e3bbff9f SP |
1891 | cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; |
1892 | break; | |
1893 | ||
c4a3e0a5 BS |
1894 | case MFI_STATE_OPERATIONAL: |
1895 | /* | |
e3bbff9f | 1896 | * Bring it to READY state; assuming max wait 10 secs |
c4a3e0a5 | 1897 | */ |
b274cab7 | 1898 | instance->instancet->disable_intr(instance->reg_set); |
87911122 YB |
1899 | if ((instance->pdev->device == |
1900 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1901 | (instance->pdev->device == | |
1902 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1903 | writel(MFI_RESET_FLAGS, | |
1904 | &instance->reg_set->reserved_0[0]); | |
1905 | } else | |
1906 | writel(MFI_RESET_FLAGS, | |
1907 | &instance->reg_set->inbound_doorbell); | |
c4a3e0a5 | 1908 | |
7218df69 | 1909 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1910 | cur_state = MFI_STATE_OPERATIONAL; |
1911 | break; | |
1912 | ||
1913 | case MFI_STATE_UNDEFINED: | |
1914 | /* | |
1915 | * This state should not last for more than 2 seconds | |
1916 | */ | |
7218df69 | 1917 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1918 | cur_state = MFI_STATE_UNDEFINED; |
1919 | break; | |
1920 | ||
1921 | case MFI_STATE_BB_INIT: | |
7218df69 | 1922 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1923 | cur_state = MFI_STATE_BB_INIT; |
1924 | break; | |
1925 | ||
1926 | case MFI_STATE_FW_INIT: | |
7218df69 | 1927 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1928 | cur_state = MFI_STATE_FW_INIT; |
1929 | break; | |
1930 | ||
1931 | case MFI_STATE_FW_INIT_2: | |
7218df69 | 1932 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1933 | cur_state = MFI_STATE_FW_INIT_2; |
1934 | break; | |
1935 | ||
1936 | case MFI_STATE_DEVICE_SCAN: | |
7218df69 | 1937 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1938 | cur_state = MFI_STATE_DEVICE_SCAN; |
1939 | break; | |
1940 | ||
1941 | case MFI_STATE_FLUSH_CACHE: | |
7218df69 | 1942 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
1943 | cur_state = MFI_STATE_FLUSH_CACHE; |
1944 | break; | |
1945 | ||
1946 | default: | |
1947 | printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", | |
1948 | fw_state); | |
1949 | return -ENODEV; | |
1950 | } | |
1951 | ||
1952 | /* | |
1953 | * The cur_state should not last for more than max_wait secs | |
1954 | */ | |
1955 | for (i = 0; i < (max_wait * 1000); i++) { | |
1341c939 SP |
1956 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & |
1957 | MFI_STATE_MASK ; | |
7218df69 YB |
1958 | curr_abs_state = |
1959 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
c4a3e0a5 | 1960 | |
7218df69 | 1961 | if (abs_state == curr_abs_state) { |
c4a3e0a5 BS |
1962 | msleep(1); |
1963 | } else | |
1964 | break; | |
1965 | } | |
1966 | ||
1967 | /* | |
1968 | * Return error if fw_state hasn't changed after max_wait | |
1969 | */ | |
7218df69 | 1970 | if (curr_abs_state == abs_state) { |
c4a3e0a5 BS |
1971 | printk(KERN_DEBUG "FW state [%d] hasn't changed " |
1972 | "in %d secs\n", fw_state, max_wait); | |
1973 | return -ENODEV; | |
1974 | } | |
1975 | }; | |
e3bbff9f | 1976 | printk(KERN_INFO "megasas: FW now in Ready state\n"); |
c4a3e0a5 BS |
1977 | |
1978 | return 0; | |
1979 | } | |
1980 | ||
1981 | /** | |
1982 | * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool | |
1983 | * @instance: Adapter soft state | |
1984 | */ | |
1985 | static void megasas_teardown_frame_pool(struct megasas_instance *instance) | |
1986 | { | |
1987 | int i; | |
1988 | u32 max_cmd = instance->max_fw_cmds; | |
1989 | struct megasas_cmd *cmd; | |
1990 | ||
1991 | if (!instance->frame_dma_pool) | |
1992 | return; | |
1993 | ||
1994 | /* | |
1995 | * Return all frames to pool | |
1996 | */ | |
1997 | for (i = 0; i < max_cmd; i++) { | |
1998 | ||
1999 | cmd = instance->cmd_list[i]; | |
2000 | ||
2001 | if (cmd->frame) | |
2002 | pci_pool_free(instance->frame_dma_pool, cmd->frame, | |
2003 | cmd->frame_phys_addr); | |
2004 | ||
2005 | if (cmd->sense) | |
e3bbff9f | 2006 | pci_pool_free(instance->sense_dma_pool, cmd->sense, |
c4a3e0a5 BS |
2007 | cmd->sense_phys_addr); |
2008 | } | |
2009 | ||
2010 | /* | |
2011 | * Now destroy the pool itself | |
2012 | */ | |
2013 | pci_pool_destroy(instance->frame_dma_pool); | |
2014 | pci_pool_destroy(instance->sense_dma_pool); | |
2015 | ||
2016 | instance->frame_dma_pool = NULL; | |
2017 | instance->sense_dma_pool = NULL; | |
2018 | } | |
2019 | ||
2020 | /** | |
2021 | * megasas_create_frame_pool - Creates DMA pool for cmd frames | |
2022 | * @instance: Adapter soft state | |
2023 | * | |
2024 | * Each command packet has an embedded DMA memory buffer that is used for | |
2025 | * filling MFI frame and the SG list that immediately follows the frame. This | |
2026 | * function creates those DMA memory buffers for each command packet by using | |
2027 | * PCI pool facility. | |
2028 | */ | |
2029 | static int megasas_create_frame_pool(struct megasas_instance *instance) | |
2030 | { | |
2031 | int i; | |
2032 | u32 max_cmd; | |
2033 | u32 sge_sz; | |
2034 | u32 sgl_sz; | |
2035 | u32 total_sz; | |
2036 | u32 frame_count; | |
2037 | struct megasas_cmd *cmd; | |
2038 | ||
2039 | max_cmd = instance->max_fw_cmds; | |
2040 | ||
2041 | /* | |
2042 | * Size of our frame is 64 bytes for MFI frame, followed by max SG | |
2043 | * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer | |
2044 | */ | |
2045 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
2046 | sizeof(struct megasas_sge32); | |
2047 | ||
f4c9a131 YB |
2048 | if (instance->flag_ieee) { |
2049 | sge_sz = sizeof(struct megasas_sge_skinny); | |
2050 | } | |
2051 | ||
c4a3e0a5 BS |
2052 | /* |
2053 | * Calculated the number of 64byte frames required for SGL | |
2054 | */ | |
2055 | sgl_sz = sge_sz * instance->max_num_sge; | |
2056 | frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; | |
2057 | ||
2058 | /* | |
2059 | * We need one extra frame for the MFI command | |
2060 | */ | |
2061 | frame_count++; | |
2062 | ||
2063 | total_sz = MEGAMFI_FRAME_SIZE * frame_count; | |
2064 | /* | |
2065 | * Use DMA pool facility provided by PCI layer | |
2066 | */ | |
2067 | instance->frame_dma_pool = pci_pool_create("megasas frame pool", | |
2068 | instance->pdev, total_sz, 64, | |
2069 | 0); | |
2070 | ||
2071 | if (!instance->frame_dma_pool) { | |
2072 | printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); | |
2073 | return -ENOMEM; | |
2074 | } | |
2075 | ||
2076 | instance->sense_dma_pool = pci_pool_create("megasas sense pool", | |
2077 | instance->pdev, 128, 4, 0); | |
2078 | ||
2079 | if (!instance->sense_dma_pool) { | |
2080 | printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); | |
2081 | ||
2082 | pci_pool_destroy(instance->frame_dma_pool); | |
2083 | instance->frame_dma_pool = NULL; | |
2084 | ||
2085 | return -ENOMEM; | |
2086 | } | |
2087 | ||
2088 | /* | |
2089 | * Allocate and attach a frame to each of the commands in cmd_list. | |
2090 | * By making cmd->index as the context instead of the &cmd, we can | |
2091 | * always use 32bit context regardless of the architecture | |
2092 | */ | |
2093 | for (i = 0; i < max_cmd; i++) { | |
2094 | ||
2095 | cmd = instance->cmd_list[i]; | |
2096 | ||
2097 | cmd->frame = pci_pool_alloc(instance->frame_dma_pool, | |
2098 | GFP_KERNEL, &cmd->frame_phys_addr); | |
2099 | ||
2100 | cmd->sense = pci_pool_alloc(instance->sense_dma_pool, | |
2101 | GFP_KERNEL, &cmd->sense_phys_addr); | |
2102 | ||
2103 | /* | |
2104 | * megasas_teardown_frame_pool() takes care of freeing | |
2105 | * whatever has been allocated | |
2106 | */ | |
2107 | if (!cmd->frame || !cmd->sense) { | |
2108 | printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); | |
2109 | megasas_teardown_frame_pool(instance); | |
2110 | return -ENOMEM; | |
2111 | } | |
2112 | ||
2113 | cmd->frame->io.context = cmd->index; | |
7e8a75f4 | 2114 | cmd->frame->io.pad_0 = 0; |
c4a3e0a5 BS |
2115 | } |
2116 | ||
2117 | return 0; | |
2118 | } | |
2119 | ||
2120 | /** | |
2121 | * megasas_free_cmds - Free all the cmds in the free cmd pool | |
2122 | * @instance: Adapter soft state | |
2123 | */ | |
2124 | static void megasas_free_cmds(struct megasas_instance *instance) | |
2125 | { | |
2126 | int i; | |
2127 | /* First free the MFI frame pool */ | |
2128 | megasas_teardown_frame_pool(instance); | |
2129 | ||
2130 | /* Free all the commands in the cmd_list */ | |
2131 | for (i = 0; i < instance->max_fw_cmds; i++) | |
2132 | kfree(instance->cmd_list[i]); | |
2133 | ||
2134 | /* Free the cmd_list buffer itself */ | |
2135 | kfree(instance->cmd_list); | |
2136 | instance->cmd_list = NULL; | |
2137 | ||
2138 | INIT_LIST_HEAD(&instance->cmd_pool); | |
2139 | } | |
2140 | ||
2141 | /** | |
2142 | * megasas_alloc_cmds - Allocates the command packets | |
2143 | * @instance: Adapter soft state | |
2144 | * | |
2145 | * Each command that is issued to the FW, whether IO commands from the OS or | |
2146 | * internal commands like IOCTLs, are wrapped in local data structure called | |
2147 | * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to | |
2148 | * the FW. | |
2149 | * | |
2150 | * Each frame has a 32-bit field called context (tag). This context is used | |
2151 | * to get back the megasas_cmd from the frame when a frame gets completed in | |
2152 | * the ISR. Typically the address of the megasas_cmd itself would be used as | |
2153 | * the context. But we wanted to keep the differences between 32 and 64 bit | |
2154 | * systems to the mininum. We always use 32 bit integers for the context. In | |
2155 | * this driver, the 32 bit values are the indices into an array cmd_list. | |
2156 | * This array is used only to look up the megasas_cmd given the context. The | |
2157 | * free commands themselves are maintained in a linked list called cmd_pool. | |
2158 | */ | |
2159 | static int megasas_alloc_cmds(struct megasas_instance *instance) | |
2160 | { | |
2161 | int i; | |
2162 | int j; | |
2163 | u32 max_cmd; | |
2164 | struct megasas_cmd *cmd; | |
2165 | ||
2166 | max_cmd = instance->max_fw_cmds; | |
2167 | ||
2168 | /* | |
2169 | * instance->cmd_list is an array of struct megasas_cmd pointers. | |
2170 | * Allocate the dynamic array first and then allocate individual | |
2171 | * commands. | |
2172 | */ | |
dd00cc48 | 2173 | instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); |
c4a3e0a5 BS |
2174 | |
2175 | if (!instance->cmd_list) { | |
2176 | printk(KERN_DEBUG "megasas: out of memory\n"); | |
2177 | return -ENOMEM; | |
2178 | } | |
2179 | ||
c4a3e0a5 BS |
2180 | |
2181 | for (i = 0; i < max_cmd; i++) { | |
2182 | instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), | |
2183 | GFP_KERNEL); | |
2184 | ||
2185 | if (!instance->cmd_list[i]) { | |
2186 | ||
2187 | for (j = 0; j < i; j++) | |
2188 | kfree(instance->cmd_list[j]); | |
2189 | ||
2190 | kfree(instance->cmd_list); | |
2191 | instance->cmd_list = NULL; | |
2192 | ||
2193 | return -ENOMEM; | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | /* | |
2198 | * Add all the commands to command pool (instance->cmd_pool) | |
2199 | */ | |
2200 | for (i = 0; i < max_cmd; i++) { | |
2201 | cmd = instance->cmd_list[i]; | |
2202 | memset(cmd, 0, sizeof(struct megasas_cmd)); | |
2203 | cmd->index = i; | |
2204 | cmd->instance = instance; | |
2205 | ||
2206 | list_add_tail(&cmd->list, &instance->cmd_pool); | |
2207 | } | |
2208 | ||
2209 | /* | |
2210 | * Create a frame pool and assign one frame to each cmd | |
2211 | */ | |
2212 | if (megasas_create_frame_pool(instance)) { | |
2213 | printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); | |
2214 | megasas_free_cmds(instance); | |
2215 | } | |
2216 | ||
2217 | return 0; | |
2218 | } | |
2219 | ||
81e403ce YB |
2220 | /* |
2221 | * megasas_get_pd_list_info - Returns FW's pd_list structure | |
2222 | * @instance: Adapter soft state | |
2223 | * @pd_list: pd_list structure | |
2224 | * | |
2225 | * Issues an internal command (DCMD) to get the FW's controller PD | |
2226 | * list structure. This information is mainly used to find out SYSTEM | |
2227 | * supported by the FW. | |
2228 | */ | |
2229 | static int | |
2230 | megasas_get_pd_list(struct megasas_instance *instance) | |
2231 | { | |
2232 | int ret = 0, pd_index = 0; | |
2233 | struct megasas_cmd *cmd; | |
2234 | struct megasas_dcmd_frame *dcmd; | |
2235 | struct MR_PD_LIST *ci; | |
2236 | struct MR_PD_ADDRESS *pd_addr; | |
2237 | dma_addr_t ci_h = 0; | |
2238 | ||
2239 | cmd = megasas_get_cmd(instance); | |
2240 | ||
2241 | if (!cmd) { | |
2242 | printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); | |
2243 | return -ENOMEM; | |
2244 | } | |
2245 | ||
2246 | dcmd = &cmd->frame->dcmd; | |
2247 | ||
2248 | ci = pci_alloc_consistent(instance->pdev, | |
2249 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); | |
2250 | ||
2251 | if (!ci) { | |
2252 | printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); | |
2253 | megasas_return_cmd(instance, cmd); | |
2254 | return -ENOMEM; | |
2255 | } | |
2256 | ||
2257 | memset(ci, 0, sizeof(*ci)); | |
2258 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2259 | ||
2260 | dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; | |
2261 | dcmd->mbox.b[1] = 0; | |
2262 | dcmd->cmd = MFI_CMD_DCMD; | |
2263 | dcmd->cmd_status = 0xFF; | |
2264 | dcmd->sge_count = 1; | |
2265 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2266 | dcmd->timeout = 0; | |
780a3762 | 2267 | dcmd->pad_0 = 0; |
81e403ce YB |
2268 | dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); |
2269 | dcmd->opcode = MR_DCMD_PD_LIST_QUERY; | |
2270 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
2271 | dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); | |
2272 | ||
2273 | if (!megasas_issue_polled(instance, cmd)) { | |
2274 | ret = 0; | |
2275 | } else { | |
2276 | ret = -1; | |
2277 | } | |
2278 | ||
2279 | /* | |
2280 | * the following function will get the instance PD LIST. | |
2281 | */ | |
2282 | ||
2283 | pd_addr = ci->addr; | |
2284 | ||
2285 | if ( ret == 0 && | |
2286 | (ci->count < | |
2287 | (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { | |
2288 | ||
2289 | memset(instance->pd_list, 0, | |
2290 | MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); | |
2291 | ||
2292 | for (pd_index = 0; pd_index < ci->count; pd_index++) { | |
2293 | ||
2294 | instance->pd_list[pd_addr->deviceId].tid = | |
2295 | pd_addr->deviceId; | |
2296 | instance->pd_list[pd_addr->deviceId].driveType = | |
2297 | pd_addr->scsiDevType; | |
2298 | instance->pd_list[pd_addr->deviceId].driveState = | |
2299 | MR_PD_STATE_SYSTEM; | |
2300 | pd_addr++; | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | pci_free_consistent(instance->pdev, | |
2305 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), | |
2306 | ci, ci_h); | |
2307 | megasas_return_cmd(instance, cmd); | |
2308 | ||
2309 | return ret; | |
2310 | } | |
2311 | ||
bdc6fb8d YB |
2312 | /* |
2313 | * megasas_get_ld_list_info - Returns FW's ld_list structure | |
2314 | * @instance: Adapter soft state | |
2315 | * @ld_list: ld_list structure | |
2316 | * | |
2317 | * Issues an internal command (DCMD) to get the FW's controller PD | |
2318 | * list structure. This information is mainly used to find out SYSTEM | |
2319 | * supported by the FW. | |
2320 | */ | |
2321 | static int | |
2322 | megasas_get_ld_list(struct megasas_instance *instance) | |
2323 | { | |
2324 | int ret = 0, ld_index = 0, ids = 0; | |
2325 | struct megasas_cmd *cmd; | |
2326 | struct megasas_dcmd_frame *dcmd; | |
2327 | struct MR_LD_LIST *ci; | |
2328 | dma_addr_t ci_h = 0; | |
2329 | ||
2330 | cmd = megasas_get_cmd(instance); | |
2331 | ||
2332 | if (!cmd) { | |
2333 | printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); | |
2334 | return -ENOMEM; | |
2335 | } | |
2336 | ||
2337 | dcmd = &cmd->frame->dcmd; | |
2338 | ||
2339 | ci = pci_alloc_consistent(instance->pdev, | |
2340 | sizeof(struct MR_LD_LIST), | |
2341 | &ci_h); | |
2342 | ||
2343 | if (!ci) { | |
2344 | printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); | |
2345 | megasas_return_cmd(instance, cmd); | |
2346 | return -ENOMEM; | |
2347 | } | |
2348 | ||
2349 | memset(ci, 0, sizeof(*ci)); | |
2350 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2351 | ||
2352 | dcmd->cmd = MFI_CMD_DCMD; | |
2353 | dcmd->cmd_status = 0xFF; | |
2354 | dcmd->sge_count = 1; | |
2355 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2356 | dcmd->timeout = 0; | |
2357 | dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); | |
2358 | dcmd->opcode = MR_DCMD_LD_GET_LIST; | |
2359 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
2360 | dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); | |
2361 | dcmd->pad_0 = 0; | |
2362 | ||
2363 | if (!megasas_issue_polled(instance, cmd)) { | |
2364 | ret = 0; | |
2365 | } else { | |
2366 | ret = -1; | |
2367 | } | |
2368 | ||
2369 | /* the following function will get the instance PD LIST */ | |
2370 | ||
2371 | if ((ret == 0) && (ci->ldCount < MAX_LOGICAL_DRIVES)) { | |
2372 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); | |
2373 | ||
2374 | for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { | |
2375 | if (ci->ldList[ld_index].state != 0) { | |
2376 | ids = ci->ldList[ld_index].ref.targetId; | |
2377 | instance->ld_ids[ids] = | |
2378 | ci->ldList[ld_index].ref.targetId; | |
2379 | } | |
2380 | } | |
2381 | } | |
2382 | ||
2383 | pci_free_consistent(instance->pdev, | |
2384 | sizeof(struct MR_LD_LIST), | |
2385 | ci, | |
2386 | ci_h); | |
2387 | ||
2388 | megasas_return_cmd(instance, cmd); | |
2389 | return ret; | |
2390 | } | |
2391 | ||
c4a3e0a5 BS |
2392 | /** |
2393 | * megasas_get_controller_info - Returns FW's controller structure | |
2394 | * @instance: Adapter soft state | |
2395 | * @ctrl_info: Controller information structure | |
2396 | * | |
2397 | * Issues an internal command (DCMD) to get the FW's controller structure. | |
2398 | * This information is mainly used to find out the maximum IO transfer per | |
2399 | * command supported by the FW. | |
2400 | */ | |
2401 | static int | |
2402 | megasas_get_ctrl_info(struct megasas_instance *instance, | |
2403 | struct megasas_ctrl_info *ctrl_info) | |
2404 | { | |
2405 | int ret = 0; | |
2406 | struct megasas_cmd *cmd; | |
2407 | struct megasas_dcmd_frame *dcmd; | |
2408 | struct megasas_ctrl_info *ci; | |
2409 | dma_addr_t ci_h = 0; | |
2410 | ||
2411 | cmd = megasas_get_cmd(instance); | |
2412 | ||
2413 | if (!cmd) { | |
2414 | printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); | |
2415 | return -ENOMEM; | |
2416 | } | |
2417 | ||
2418 | dcmd = &cmd->frame->dcmd; | |
2419 | ||
2420 | ci = pci_alloc_consistent(instance->pdev, | |
2421 | sizeof(struct megasas_ctrl_info), &ci_h); | |
2422 | ||
2423 | if (!ci) { | |
2424 | printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); | |
2425 | megasas_return_cmd(instance, cmd); | |
2426 | return -ENOMEM; | |
2427 | } | |
2428 | ||
2429 | memset(ci, 0, sizeof(*ci)); | |
2430 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2431 | ||
2432 | dcmd->cmd = MFI_CMD_DCMD; | |
2433 | dcmd->cmd_status = 0xFF; | |
2434 | dcmd->sge_count = 1; | |
2435 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2436 | dcmd->timeout = 0; | |
780a3762 | 2437 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
2438 | dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); |
2439 | dcmd->opcode = MR_DCMD_CTRL_GET_INFO; | |
2440 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
2441 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); | |
2442 | ||
2443 | if (!megasas_issue_polled(instance, cmd)) { | |
2444 | ret = 0; | |
2445 | memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); | |
2446 | } else { | |
2447 | ret = -1; | |
2448 | } | |
2449 | ||
2450 | pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), | |
2451 | ci, ci_h); | |
2452 | ||
2453 | megasas_return_cmd(instance, cmd); | |
2454 | return ret; | |
2455 | } | |
2456 | ||
31ea7088 | 2457 | /** |
2458 | * megasas_issue_init_mfi - Initializes the FW | |
2459 | * @instance: Adapter soft state | |
2460 | * | |
2461 | * Issues the INIT MFI cmd | |
2462 | */ | |
2463 | static int | |
2464 | megasas_issue_init_mfi(struct megasas_instance *instance) | |
2465 | { | |
2466 | u32 context; | |
2467 | ||
2468 | struct megasas_cmd *cmd; | |
2469 | ||
2470 | struct megasas_init_frame *init_frame; | |
2471 | struct megasas_init_queue_info *initq_info; | |
2472 | dma_addr_t init_frame_h; | |
2473 | dma_addr_t initq_info_h; | |
2474 | ||
2475 | /* | |
2476 | * Prepare a init frame. Note the init frame points to queue info | |
2477 | * structure. Each frame has SGL allocated after first 64 bytes. For | |
2478 | * this frame - since we don't need any SGL - we use SGL's space as | |
2479 | * queue info structure | |
2480 | * | |
2481 | * We will not get a NULL command below. We just created the pool. | |
2482 | */ | |
2483 | cmd = megasas_get_cmd(instance); | |
2484 | ||
2485 | init_frame = (struct megasas_init_frame *)cmd->frame; | |
2486 | initq_info = (struct megasas_init_queue_info *) | |
2487 | ((unsigned long)init_frame + 64); | |
2488 | ||
2489 | init_frame_h = cmd->frame_phys_addr; | |
2490 | initq_info_h = init_frame_h + 64; | |
2491 | ||
2492 | context = init_frame->context; | |
2493 | memset(init_frame, 0, MEGAMFI_FRAME_SIZE); | |
2494 | memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); | |
2495 | init_frame->context = context; | |
2496 | ||
2497 | initq_info->reply_queue_entries = instance->max_fw_cmds + 1; | |
2498 | initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; | |
2499 | ||
2500 | initq_info->producer_index_phys_addr_lo = instance->producer_h; | |
2501 | initq_info->consumer_index_phys_addr_lo = instance->consumer_h; | |
2502 | ||
2503 | init_frame->cmd = MFI_CMD_INIT; | |
2504 | init_frame->cmd_status = 0xFF; | |
2505 | init_frame->queue_info_new_phys_addr_lo = initq_info_h; | |
2506 | ||
2507 | init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); | |
2508 | ||
2509 | /* | |
2510 | * disable the intr before firing the init frame to FW | |
2511 | */ | |
2512 | instance->instancet->disable_intr(instance->reg_set); | |
2513 | ||
2514 | /* | |
2515 | * Issue the init frame in polled mode | |
2516 | */ | |
2517 | ||
2518 | if (megasas_issue_polled(instance, cmd)) { | |
2519 | printk(KERN_ERR "megasas: Failed to init firmware\n"); | |
2520 | megasas_return_cmd(instance, cmd); | |
2521 | goto fail_fw_init; | |
2522 | } | |
2523 | ||
2524 | megasas_return_cmd(instance, cmd); | |
2525 | ||
2526 | return 0; | |
2527 | ||
2528 | fail_fw_init: | |
2529 | return -EINVAL; | |
2530 | } | |
2531 | ||
ad84db2e | 2532 | /** |
2533 | * megasas_start_timer - Initializes a timer object | |
2534 | * @instance: Adapter soft state | |
2535 | * @timer: timer object to be initialized | |
2536 | * @fn: timer function | |
2537 | * @interval: time interval between timer function call | |
2538 | */ | |
2539 | static inline void | |
2540 | megasas_start_timer(struct megasas_instance *instance, | |
2541 | struct timer_list *timer, | |
2542 | void *fn, unsigned long interval) | |
2543 | { | |
2544 | init_timer(timer); | |
2545 | timer->expires = jiffies + interval; | |
2546 | timer->data = (unsigned long)instance; | |
2547 | timer->function = fn; | |
2548 | add_timer(timer); | |
2549 | } | |
2550 | ||
2551 | /** | |
2552 | * megasas_io_completion_timer - Timer fn | |
2553 | * @instance_addr: Address of adapter soft state | |
2554 | * | |
2555 | * Schedules tasklet for cmd completion | |
2556 | * if poll_mode_io is set | |
2557 | */ | |
2558 | static void | |
2559 | megasas_io_completion_timer(unsigned long instance_addr) | |
2560 | { | |
2561 | struct megasas_instance *instance = | |
2562 | (struct megasas_instance *)instance_addr; | |
2563 | ||
2564 | if (atomic_read(&instance->fw_outstanding)) | |
2565 | tasklet_schedule(&instance->isr_tasklet); | |
2566 | ||
2567 | /* Restart timer */ | |
2568 | if (poll_mode_io) | |
2569 | mod_timer(&instance->io_completion_timer, | |
2570 | jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); | |
2571 | } | |
2572 | ||
c4a3e0a5 BS |
2573 | /** |
2574 | * megasas_init_mfi - Initializes the FW | |
2575 | * @instance: Adapter soft state | |
2576 | * | |
2577 | * This is the main function for initializing MFI firmware. | |
2578 | */ | |
2579 | static int megasas_init_mfi(struct megasas_instance *instance) | |
2580 | { | |
2581 | u32 context_sz; | |
2582 | u32 reply_q_sz; | |
2583 | u32 max_sectors_1; | |
2584 | u32 max_sectors_2; | |
14faea9f | 2585 | u32 tmp_sectors; |
c4a3e0a5 | 2586 | struct megasas_register_set __iomem *reg_set; |
c4a3e0a5 | 2587 | struct megasas_ctrl_info *ctrl_info; |
c4a3e0a5 BS |
2588 | /* |
2589 | * Map the message registers | |
2590 | */ | |
6610a6b3 | 2591 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1078GEN2) || |
87911122 YB |
2592 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
2593 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
6610a6b3 YB |
2594 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0079GEN2)) { |
2595 | instance->base_addr = pci_resource_start(instance->pdev, 1); | |
2596 | } else { | |
2597 | instance->base_addr = pci_resource_start(instance->pdev, 0); | |
2598 | } | |
c4a3e0a5 | 2599 | |
aeab3fd7 NF |
2600 | if (pci_request_selected_regions(instance->pdev, |
2601 | pci_select_bars(instance->pdev, IORESOURCE_MEM), | |
2602 | "megasas: LSI")) { | |
c4a3e0a5 BS |
2603 | printk(KERN_DEBUG "megasas: IO memory region busy!\n"); |
2604 | return -EBUSY; | |
2605 | } | |
2606 | ||
2607 | instance->reg_set = ioremap_nocache(instance->base_addr, 8192); | |
2608 | ||
2609 | if (!instance->reg_set) { | |
2610 | printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); | |
2611 | goto fail_ioremap; | |
2612 | } | |
2613 | ||
2614 | reg_set = instance->reg_set; | |
2615 | ||
f9876f0b SP |
2616 | switch(instance->pdev->device) |
2617 | { | |
af7a5647 | 2618 | case PCI_DEVICE_ID_LSI_SAS1078R: |
2619 | case PCI_DEVICE_ID_LSI_SAS1078DE: | |
f9876f0b SP |
2620 | instance->instancet = &megasas_instance_template_ppc; |
2621 | break; | |
6610a6b3 YB |
2622 | case PCI_DEVICE_ID_LSI_SAS1078GEN2: |
2623 | case PCI_DEVICE_ID_LSI_SAS0079GEN2: | |
2624 | instance->instancet = &megasas_instance_template_gen2; | |
2625 | break; | |
87911122 YB |
2626 | case PCI_DEVICE_ID_LSI_SAS0073SKINNY: |
2627 | case PCI_DEVICE_ID_LSI_SAS0071SKINNY: | |
2628 | instance->instancet = &megasas_instance_template_skinny; | |
2629 | break; | |
f9876f0b SP |
2630 | case PCI_DEVICE_ID_LSI_SAS1064R: |
2631 | case PCI_DEVICE_ID_DELL_PERC5: | |
2632 | default: | |
2633 | instance->instancet = &megasas_instance_template_xscale; | |
2634 | break; | |
2635 | } | |
1341c939 | 2636 | |
c4a3e0a5 BS |
2637 | /* |
2638 | * We expect the FW state to be READY | |
2639 | */ | |
1341c939 | 2640 | if (megasas_transition_to_ready(instance)) |
c4a3e0a5 BS |
2641 | goto fail_ready_state; |
2642 | ||
2643 | /* | |
2644 | * Get various operational parameters from status register | |
2645 | */ | |
1341c939 | 2646 | instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
e3bbff9f SP |
2647 | /* |
2648 | * Reduce the max supported cmds by 1. This is to ensure that the | |
2649 | * reply_q_sz (1 more than the max cmd that driver may send) | |
2650 | * does not exceed max cmds that the FW can support | |
2651 | */ | |
2652 | instance->max_fw_cmds = instance->max_fw_cmds-1; | |
1341c939 SP |
2653 | instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> |
2654 | 0x10; | |
c4a3e0a5 BS |
2655 | /* |
2656 | * Create a pool of commands | |
2657 | */ | |
2658 | if (megasas_alloc_cmds(instance)) | |
2659 | goto fail_alloc_cmds; | |
2660 | ||
2661 | /* | |
2662 | * Allocate memory for reply queue. Length of reply queue should | |
2663 | * be _one_ more than the maximum commands handled by the firmware. | |
2664 | * | |
2665 | * Note: When FW completes commands, it places corresponding contex | |
2666 | * values in this circular reply queue. This circular queue is a fairly | |
2667 | * typical producer-consumer queue. FW is the producer (of completed | |
2668 | * commands) and the driver is the consumer. | |
2669 | */ | |
2670 | context_sz = sizeof(u32); | |
2671 | reply_q_sz = context_sz * (instance->max_fw_cmds + 1); | |
2672 | ||
2673 | instance->reply_queue = pci_alloc_consistent(instance->pdev, | |
2674 | reply_q_sz, | |
2675 | &instance->reply_queue_h); | |
2676 | ||
2677 | if (!instance->reply_queue) { | |
2678 | printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); | |
2679 | goto fail_reply_queue; | |
2680 | } | |
2681 | ||
31ea7088 | 2682 | if (megasas_issue_init_mfi(instance)) |
c4a3e0a5 | 2683 | goto fail_fw_init; |
c4a3e0a5 | 2684 | |
81e403ce YB |
2685 | memset(instance->pd_list, 0 , |
2686 | (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); | |
2687 | megasas_get_pd_list(instance); | |
2688 | ||
bdc6fb8d YB |
2689 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
2690 | megasas_get_ld_list(instance); | |
2691 | ||
c4a3e0a5 BS |
2692 | ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); |
2693 | ||
2694 | /* | |
2695 | * Compute the max allowed sectors per IO: The controller info has two | |
2696 | * limits on max sectors. Driver should use the minimum of these two. | |
2697 | * | |
2698 | * 1 << stripe_sz_ops.min = max sectors per strip | |
2699 | * | |
2700 | * Note that older firmwares ( < FW ver 30) didn't report information | |
2701 | * to calculate max_sectors_1. So the number ended up as zero always. | |
2702 | */ | |
14faea9f | 2703 | tmp_sectors = 0; |
c4a3e0a5 BS |
2704 | if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { |
2705 | ||
2706 | max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * | |
2707 | ctrl_info->max_strips_per_io; | |
2708 | max_sectors_2 = ctrl_info->max_request_size; | |
2709 | ||
14faea9f | 2710 | tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); |
2711 | } | |
2712 | ||
2713 | instance->max_sectors_per_req = instance->max_num_sge * | |
2714 | PAGE_SIZE / 512; | |
2715 | if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) | |
2716 | instance->max_sectors_per_req = tmp_sectors; | |
c4a3e0a5 BS |
2717 | |
2718 | kfree(ctrl_info); | |
2719 | ||
5d018ad0 SP |
2720 | /* |
2721 | * Setup tasklet for cmd completion | |
2722 | */ | |
2723 | ||
ad84db2e | 2724 | tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, |
2725 | (unsigned long)instance); | |
2726 | ||
2727 | /* Initialize the cmd completion timer */ | |
2728 | if (poll_mode_io) | |
2729 | megasas_start_timer(instance, &instance->io_completion_timer, | |
2730 | megasas_io_completion_timer, | |
2731 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
c4a3e0a5 BS |
2732 | return 0; |
2733 | ||
2734 | fail_fw_init: | |
c4a3e0a5 BS |
2735 | |
2736 | pci_free_consistent(instance->pdev, reply_q_sz, | |
2737 | instance->reply_queue, instance->reply_queue_h); | |
2738 | fail_reply_queue: | |
2739 | megasas_free_cmds(instance); | |
2740 | ||
2741 | fail_alloc_cmds: | |
2742 | fail_ready_state: | |
2743 | iounmap(instance->reg_set); | |
2744 | ||
2745 | fail_ioremap: | |
aeab3fd7 NF |
2746 | pci_release_selected_regions(instance->pdev, |
2747 | pci_select_bars(instance->pdev, IORESOURCE_MEM)); | |
c4a3e0a5 BS |
2748 | |
2749 | return -EINVAL; | |
2750 | } | |
2751 | ||
2752 | /** | |
2753 | * megasas_release_mfi - Reverses the FW initialization | |
2754 | * @intance: Adapter soft state | |
2755 | */ | |
2756 | static void megasas_release_mfi(struct megasas_instance *instance) | |
2757 | { | |
2758 | u32 reply_q_sz = sizeof(u32) * (instance->max_fw_cmds + 1); | |
2759 | ||
2760 | pci_free_consistent(instance->pdev, reply_q_sz, | |
2761 | instance->reply_queue, instance->reply_queue_h); | |
2762 | ||
2763 | megasas_free_cmds(instance); | |
2764 | ||
2765 | iounmap(instance->reg_set); | |
2766 | ||
aeab3fd7 NF |
2767 | pci_release_selected_regions(instance->pdev, |
2768 | pci_select_bars(instance->pdev, IORESOURCE_MEM)); | |
c4a3e0a5 BS |
2769 | } |
2770 | ||
2771 | /** | |
2772 | * megasas_get_seq_num - Gets latest event sequence numbers | |
2773 | * @instance: Adapter soft state | |
2774 | * @eli: FW event log sequence numbers information | |
2775 | * | |
2776 | * FW maintains a log of all events in a non-volatile area. Upper layers would | |
2777 | * usually find out the latest sequence number of the events, the seq number at | |
2778 | * the boot etc. They would "read" all the events below the latest seq number | |
2779 | * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq | |
2780 | * number), they would subsribe to AEN (asynchronous event notification) and | |
2781 | * wait for the events to happen. | |
2782 | */ | |
2783 | static int | |
2784 | megasas_get_seq_num(struct megasas_instance *instance, | |
2785 | struct megasas_evt_log_info *eli) | |
2786 | { | |
2787 | struct megasas_cmd *cmd; | |
2788 | struct megasas_dcmd_frame *dcmd; | |
2789 | struct megasas_evt_log_info *el_info; | |
2790 | dma_addr_t el_info_h = 0; | |
2791 | ||
2792 | cmd = megasas_get_cmd(instance); | |
2793 | ||
2794 | if (!cmd) { | |
2795 | return -ENOMEM; | |
2796 | } | |
2797 | ||
2798 | dcmd = &cmd->frame->dcmd; | |
2799 | el_info = pci_alloc_consistent(instance->pdev, | |
2800 | sizeof(struct megasas_evt_log_info), | |
2801 | &el_info_h); | |
2802 | ||
2803 | if (!el_info) { | |
2804 | megasas_return_cmd(instance, cmd); | |
2805 | return -ENOMEM; | |
2806 | } | |
2807 | ||
2808 | memset(el_info, 0, sizeof(*el_info)); | |
2809 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2810 | ||
2811 | dcmd->cmd = MFI_CMD_DCMD; | |
2812 | dcmd->cmd_status = 0x0; | |
2813 | dcmd->sge_count = 1; | |
2814 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2815 | dcmd->timeout = 0; | |
780a3762 | 2816 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
2817 | dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); |
2818 | dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; | |
2819 | dcmd->sgl.sge32[0].phys_addr = el_info_h; | |
2820 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); | |
2821 | ||
2822 | megasas_issue_blocked_cmd(instance, cmd); | |
2823 | ||
2824 | /* | |
2825 | * Copy the data back into callers buffer | |
2826 | */ | |
2827 | memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); | |
2828 | ||
2829 | pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), | |
2830 | el_info, el_info_h); | |
2831 | ||
2832 | megasas_return_cmd(instance, cmd); | |
2833 | ||
2834 | return 0; | |
2835 | } | |
2836 | ||
2837 | /** | |
2838 | * megasas_register_aen - Registers for asynchronous event notification | |
2839 | * @instance: Adapter soft state | |
2840 | * @seq_num: The starting sequence number | |
2841 | * @class_locale: Class of the event | |
2842 | * | |
2843 | * This function subscribes for AEN for events beyond the @seq_num. It requests | |
2844 | * to be notified if and only if the event is of type @class_locale | |
2845 | */ | |
2846 | static int | |
2847 | megasas_register_aen(struct megasas_instance *instance, u32 seq_num, | |
2848 | u32 class_locale_word) | |
2849 | { | |
2850 | int ret_val; | |
2851 | struct megasas_cmd *cmd; | |
2852 | struct megasas_dcmd_frame *dcmd; | |
2853 | union megasas_evt_class_locale curr_aen; | |
2854 | union megasas_evt_class_locale prev_aen; | |
2855 | ||
2856 | /* | |
2857 | * If there an AEN pending already (aen_cmd), check if the | |
2858 | * class_locale of that pending AEN is inclusive of the new | |
2859 | * AEN request we currently have. If it is, then we don't have | |
2860 | * to do anything. In other words, whichever events the current | |
2861 | * AEN request is subscribing to, have already been subscribed | |
2862 | * to. | |
2863 | * | |
2864 | * If the old_cmd is _not_ inclusive, then we have to abort | |
2865 | * that command, form a class_locale that is superset of both | |
2866 | * old and current and re-issue to the FW | |
2867 | */ | |
2868 | ||
2869 | curr_aen.word = class_locale_word; | |
2870 | ||
2871 | if (instance->aen_cmd) { | |
2872 | ||
2873 | prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; | |
2874 | ||
2875 | /* | |
2876 | * A class whose enum value is smaller is inclusive of all | |
2877 | * higher values. If a PROGRESS (= -1) was previously | |
2878 | * registered, then a new registration requests for higher | |
2879 | * classes need not be sent to FW. They are automatically | |
2880 | * included. | |
2881 | * | |
2882 | * Locale numbers don't have such hierarchy. They are bitmap | |
2883 | * values | |
2884 | */ | |
2885 | if ((prev_aen.members.class <= curr_aen.members.class) && | |
2886 | !((prev_aen.members.locale & curr_aen.members.locale) ^ | |
2887 | curr_aen.members.locale)) { | |
2888 | /* | |
2889 | * Previously issued event registration includes | |
2890 | * current request. Nothing to do. | |
2891 | */ | |
2892 | return 0; | |
2893 | } else { | |
2894 | curr_aen.members.locale |= prev_aen.members.locale; | |
2895 | ||
2896 | if (prev_aen.members.class < curr_aen.members.class) | |
2897 | curr_aen.members.class = prev_aen.members.class; | |
2898 | ||
2899 | instance->aen_cmd->abort_aen = 1; | |
2900 | ret_val = megasas_issue_blocked_abort_cmd(instance, | |
2901 | instance-> | |
2902 | aen_cmd); | |
2903 | ||
2904 | if (ret_val) { | |
2905 | printk(KERN_DEBUG "megasas: Failed to abort " | |
2906 | "previous AEN command\n"); | |
2907 | return ret_val; | |
2908 | } | |
2909 | } | |
2910 | } | |
2911 | ||
2912 | cmd = megasas_get_cmd(instance); | |
2913 | ||
2914 | if (!cmd) | |
2915 | return -ENOMEM; | |
2916 | ||
2917 | dcmd = &cmd->frame->dcmd; | |
2918 | ||
2919 | memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); | |
2920 | ||
2921 | /* | |
2922 | * Prepare DCMD for aen registration | |
2923 | */ | |
2924 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
2925 | ||
2926 | dcmd->cmd = MFI_CMD_DCMD; | |
2927 | dcmd->cmd_status = 0x0; | |
2928 | dcmd->sge_count = 1; | |
2929 | dcmd->flags = MFI_FRAME_DIR_READ; | |
2930 | dcmd->timeout = 0; | |
780a3762 | 2931 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
2932 | dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); |
2933 | dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; | |
2934 | dcmd->mbox.w[0] = seq_num; | |
2935 | dcmd->mbox.w[1] = curr_aen.word; | |
2936 | dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; | |
2937 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); | |
2938 | ||
f4c9a131 YB |
2939 | if (instance->aen_cmd != NULL) { |
2940 | megasas_return_cmd(instance, cmd); | |
2941 | return 0; | |
2942 | } | |
2943 | ||
c4a3e0a5 BS |
2944 | /* |
2945 | * Store reference to the cmd used to register for AEN. When an | |
2946 | * application wants us to register for AEN, we have to abort this | |
2947 | * cmd and re-register with a new EVENT LOCALE supplied by that app | |
2948 | */ | |
2949 | instance->aen_cmd = cmd; | |
2950 | ||
2951 | /* | |
2952 | * Issue the aen registration frame | |
2953 | */ | |
0c79e681 YB |
2954 | instance->instancet->fire_cmd(instance, |
2955 | cmd->frame_phys_addr, 0, instance->reg_set); | |
c4a3e0a5 BS |
2956 | |
2957 | return 0; | |
2958 | } | |
2959 | ||
2960 | /** | |
2961 | * megasas_start_aen - Subscribes to AEN during driver load time | |
2962 | * @instance: Adapter soft state | |
2963 | */ | |
2964 | static int megasas_start_aen(struct megasas_instance *instance) | |
2965 | { | |
2966 | struct megasas_evt_log_info eli; | |
2967 | union megasas_evt_class_locale class_locale; | |
2968 | ||
2969 | /* | |
2970 | * Get the latest sequence number from FW | |
2971 | */ | |
2972 | memset(&eli, 0, sizeof(eli)); | |
2973 | ||
2974 | if (megasas_get_seq_num(instance, &eli)) | |
2975 | return -1; | |
2976 | ||
2977 | /* | |
2978 | * Register AEN with FW for latest sequence number plus 1 | |
2979 | */ | |
2980 | class_locale.members.reserved = 0; | |
2981 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
2982 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
2983 | ||
2984 | return megasas_register_aen(instance, eli.newest_seq_num + 1, | |
2985 | class_locale.word); | |
2986 | } | |
2987 | ||
2988 | /** | |
2989 | * megasas_io_attach - Attaches this driver to SCSI mid-layer | |
2990 | * @instance: Adapter soft state | |
2991 | */ | |
2992 | static int megasas_io_attach(struct megasas_instance *instance) | |
2993 | { | |
2994 | struct Scsi_Host *host = instance->host; | |
2995 | ||
2996 | /* | |
2997 | * Export parameters required by SCSI mid-layer | |
2998 | */ | |
2999 | host->irq = instance->pdev->irq; | |
3000 | host->unique_id = instance->unique_id; | |
7bebf5c7 YB |
3001 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
3002 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
3003 | host->can_queue = | |
3004 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
3005 | } else | |
3006 | host->can_queue = | |
3007 | instance->max_fw_cmds - MEGASAS_INT_CMDS; | |
c4a3e0a5 BS |
3008 | host->this_id = instance->init_id; |
3009 | host->sg_tablesize = instance->max_num_sge; | |
3010 | host->max_sectors = instance->max_sectors_per_req; | |
3011 | host->cmd_per_lun = 128; | |
3012 | host->max_channel = MEGASAS_MAX_CHANNELS - 1; | |
3013 | host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; | |
3014 | host->max_lun = MEGASAS_MAX_LUN; | |
122da302 | 3015 | host->max_cmd_len = 16; |
c4a3e0a5 BS |
3016 | |
3017 | /* | |
3018 | * Notify the mid-layer about the new controller | |
3019 | */ | |
3020 | if (scsi_add_host(host, &instance->pdev->dev)) { | |
3021 | printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); | |
3022 | return -ENODEV; | |
3023 | } | |
3024 | ||
3025 | /* | |
3026 | * Trigger SCSI to scan our drives | |
3027 | */ | |
3028 | scsi_scan_host(host); | |
3029 | return 0; | |
3030 | } | |
3031 | ||
31ea7088 | 3032 | static int |
3033 | megasas_set_dma_mask(struct pci_dev *pdev) | |
3034 | { | |
3035 | /* | |
3036 | * All our contollers are capable of performing 64-bit DMA | |
3037 | */ | |
3038 | if (IS_DMA64) { | |
6a35528a | 3039 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { |
31ea7088 | 3040 | |
284901a9 | 3041 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3042 | goto fail_set_dma_mask; |
3043 | } | |
3044 | } else { | |
284901a9 | 3045 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3046 | goto fail_set_dma_mask; |
3047 | } | |
3048 | return 0; | |
3049 | ||
3050 | fail_set_dma_mask: | |
3051 | return 1; | |
3052 | } | |
3053 | ||
c4a3e0a5 BS |
3054 | /** |
3055 | * megasas_probe_one - PCI hotplug entry point | |
3056 | * @pdev: PCI device structure | |
3057 | * @id: PCI ids of supported hotplugged adapter | |
3058 | */ | |
3059 | static int __devinit | |
3060 | megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
3061 | { | |
3062 | int rval; | |
3063 | struct Scsi_Host *host; | |
3064 | struct megasas_instance *instance; | |
3065 | ||
3066 | /* | |
3067 | * Announce PCI information | |
3068 | */ | |
3069 | printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
3070 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
3071 | pdev->subsystem_device); | |
3072 | ||
3073 | printk("bus %d:slot %d:func %d\n", | |
3074 | pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); | |
3075 | ||
3076 | /* | |
3077 | * PCI prepping: enable device set bus mastering and dma mask | |
3078 | */ | |
aeab3fd7 | 3079 | rval = pci_enable_device_mem(pdev); |
c4a3e0a5 BS |
3080 | |
3081 | if (rval) { | |
3082 | return rval; | |
3083 | } | |
3084 | ||
3085 | pci_set_master(pdev); | |
3086 | ||
31ea7088 | 3087 | if (megasas_set_dma_mask(pdev)) |
3088 | goto fail_set_dma_mask; | |
c4a3e0a5 BS |
3089 | |
3090 | host = scsi_host_alloc(&megasas_template, | |
3091 | sizeof(struct megasas_instance)); | |
3092 | ||
3093 | if (!host) { | |
3094 | printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); | |
3095 | goto fail_alloc_instance; | |
3096 | } | |
3097 | ||
3098 | instance = (struct megasas_instance *)host->hostdata; | |
3099 | memset(instance, 0, sizeof(*instance)); | |
3100 | ||
3101 | instance->producer = pci_alloc_consistent(pdev, sizeof(u32), | |
3102 | &instance->producer_h); | |
3103 | instance->consumer = pci_alloc_consistent(pdev, sizeof(u32), | |
3104 | &instance->consumer_h); | |
3105 | ||
3106 | if (!instance->producer || !instance->consumer) { | |
3107 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " | |
3108 | "producer, consumer\n"); | |
3109 | goto fail_alloc_dma_buf; | |
3110 | } | |
3111 | ||
3112 | *instance->producer = 0; | |
3113 | *instance->consumer = 0; | |
c3518837 | 3114 | megasas_poll_wait_aen = 0; |
f4c9a131 | 3115 | instance->flag_ieee = 0; |
7e8a75f4 | 3116 | instance->ev = NULL; |
c4a3e0a5 BS |
3117 | |
3118 | instance->evt_detail = pci_alloc_consistent(pdev, | |
3119 | sizeof(struct | |
3120 | megasas_evt_detail), | |
3121 | &instance->evt_detail_h); | |
3122 | ||
3123 | if (!instance->evt_detail) { | |
3124 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " | |
3125 | "event detail structure\n"); | |
3126 | goto fail_alloc_dma_buf; | |
3127 | } | |
3128 | ||
3129 | /* | |
3130 | * Initialize locks and queues | |
3131 | */ | |
3132 | INIT_LIST_HEAD(&instance->cmd_pool); | |
3133 | ||
e4a082c7 SP |
3134 | atomic_set(&instance->fw_outstanding,0); |
3135 | ||
c4a3e0a5 BS |
3136 | init_waitqueue_head(&instance->int_cmd_wait_q); |
3137 | init_waitqueue_head(&instance->abort_cmd_wait_q); | |
3138 | ||
3139 | spin_lock_init(&instance->cmd_pool_lock); | |
0c79e681 | 3140 | spin_lock_init(&instance->fire_lock); |
7343eb65 | 3141 | spin_lock_init(&instance->completion_lock); |
c3518837 | 3142 | spin_lock_init(&poll_aen_lock); |
c4a3e0a5 | 3143 | |
e5a69e27 | 3144 | mutex_init(&instance->aen_mutex); |
c4a3e0a5 BS |
3145 | |
3146 | /* | |
3147 | * Initialize PCI related and misc parameters | |
3148 | */ | |
3149 | instance->pdev = pdev; | |
3150 | instance->host = host; | |
3151 | instance->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
3152 | instance->init_id = MEGASAS_DEFAULT_INIT_ID; | |
3153 | ||
7bebf5c7 YB |
3154 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
3155 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
f4c9a131 | 3156 | instance->flag_ieee = 1; |
7bebf5c7 YB |
3157 | sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); |
3158 | } else | |
3159 | sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); | |
3160 | ||
658dcedb | 3161 | megasas_dbg_lvl = 0; |
05e9ebbe | 3162 | instance->flag = 0; |
0c79e681 | 3163 | instance->unload = 1; |
05e9ebbe | 3164 | instance->last_time = 0; |
658dcedb | 3165 | |
c4a3e0a5 BS |
3166 | /* |
3167 | * Initialize MFI Firmware | |
3168 | */ | |
3169 | if (megasas_init_mfi(instance)) | |
3170 | goto fail_init_mfi; | |
3171 | ||
3172 | /* | |
3173 | * Register IRQ | |
3174 | */ | |
1d6f359a | 3175 | if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, "megasas", instance)) { |
c4a3e0a5 BS |
3176 | printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); |
3177 | goto fail_irq; | |
3178 | } | |
3179 | ||
1341c939 | 3180 | instance->instancet->enable_intr(instance->reg_set); |
c4a3e0a5 BS |
3181 | |
3182 | /* | |
3183 | * Store instance in PCI softstate | |
3184 | */ | |
3185 | pci_set_drvdata(pdev, instance); | |
3186 | ||
3187 | /* | |
3188 | * Add this controller to megasas_mgmt_info structure so that it | |
3189 | * can be exported to management applications | |
3190 | */ | |
3191 | megasas_mgmt_info.count++; | |
3192 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; | |
3193 | megasas_mgmt_info.max_index++; | |
3194 | ||
3195 | /* | |
3196 | * Initiate AEN (Asynchronous Event Notification) | |
3197 | */ | |
3198 | if (megasas_start_aen(instance)) { | |
3199 | printk(KERN_DEBUG "megasas: start aen failed\n"); | |
3200 | goto fail_start_aen; | |
3201 | } | |
3202 | ||
3203 | /* | |
3204 | * Register with SCSI mid-layer | |
3205 | */ | |
3206 | if (megasas_io_attach(instance)) | |
3207 | goto fail_io_attach; | |
3208 | ||
0c79e681 | 3209 | instance->unload = 0; |
c4a3e0a5 BS |
3210 | return 0; |
3211 | ||
3212 | fail_start_aen: | |
3213 | fail_io_attach: | |
3214 | megasas_mgmt_info.count--; | |
3215 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; | |
3216 | megasas_mgmt_info.max_index--; | |
3217 | ||
3218 | pci_set_drvdata(pdev, NULL); | |
b274cab7 | 3219 | instance->instancet->disable_intr(instance->reg_set); |
c4a3e0a5 BS |
3220 | free_irq(instance->pdev->irq, instance); |
3221 | ||
3222 | megasas_release_mfi(instance); | |
3223 | ||
3224 | fail_irq: | |
3225 | fail_init_mfi: | |
3226 | fail_alloc_dma_buf: | |
3227 | if (instance->evt_detail) | |
3228 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
3229 | instance->evt_detail, | |
3230 | instance->evt_detail_h); | |
3231 | ||
3232 | if (instance->producer) | |
3233 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
3234 | instance->producer_h); | |
3235 | if (instance->consumer) | |
3236 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
3237 | instance->consumer_h); | |
3238 | scsi_host_put(host); | |
3239 | ||
3240 | fail_alloc_instance: | |
3241 | fail_set_dma_mask: | |
3242 | pci_disable_device(pdev); | |
3243 | ||
3244 | return -ENODEV; | |
3245 | } | |
3246 | ||
3247 | /** | |
3248 | * megasas_flush_cache - Requests FW to flush all its caches | |
3249 | * @instance: Adapter soft state | |
3250 | */ | |
3251 | static void megasas_flush_cache(struct megasas_instance *instance) | |
3252 | { | |
3253 | struct megasas_cmd *cmd; | |
3254 | struct megasas_dcmd_frame *dcmd; | |
3255 | ||
3256 | cmd = megasas_get_cmd(instance); | |
3257 | ||
3258 | if (!cmd) | |
3259 | return; | |
3260 | ||
3261 | dcmd = &cmd->frame->dcmd; | |
3262 | ||
3263 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3264 | ||
3265 | dcmd->cmd = MFI_CMD_DCMD; | |
3266 | dcmd->cmd_status = 0x0; | |
3267 | dcmd->sge_count = 0; | |
3268 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
3269 | dcmd->timeout = 0; | |
780a3762 | 3270 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3271 | dcmd->data_xfer_len = 0; |
3272 | dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; | |
3273 | dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; | |
3274 | ||
3275 | megasas_issue_blocked_cmd(instance, cmd); | |
3276 | ||
3277 | megasas_return_cmd(instance, cmd); | |
3278 | ||
3279 | return; | |
3280 | } | |
3281 | ||
3282 | /** | |
3283 | * megasas_shutdown_controller - Instructs FW to shutdown the controller | |
3284 | * @instance: Adapter soft state | |
31ea7088 | 3285 | * @opcode: Shutdown/Hibernate |
c4a3e0a5 | 3286 | */ |
31ea7088 | 3287 | static void megasas_shutdown_controller(struct megasas_instance *instance, |
3288 | u32 opcode) | |
c4a3e0a5 BS |
3289 | { |
3290 | struct megasas_cmd *cmd; | |
3291 | struct megasas_dcmd_frame *dcmd; | |
3292 | ||
3293 | cmd = megasas_get_cmd(instance); | |
3294 | ||
3295 | if (!cmd) | |
3296 | return; | |
3297 | ||
3298 | if (instance->aen_cmd) | |
3299 | megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); | |
3300 | ||
3301 | dcmd = &cmd->frame->dcmd; | |
3302 | ||
3303 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3304 | ||
3305 | dcmd->cmd = MFI_CMD_DCMD; | |
3306 | dcmd->cmd_status = 0x0; | |
3307 | dcmd->sge_count = 0; | |
3308 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
3309 | dcmd->timeout = 0; | |
780a3762 | 3310 | dcmd->pad_0 = 0; |
c4a3e0a5 | 3311 | dcmd->data_xfer_len = 0; |
31ea7088 | 3312 | dcmd->opcode = opcode; |
c4a3e0a5 BS |
3313 | |
3314 | megasas_issue_blocked_cmd(instance, cmd); | |
3315 | ||
3316 | megasas_return_cmd(instance, cmd); | |
3317 | ||
3318 | return; | |
3319 | } | |
3320 | ||
33139b21 | 3321 | #ifdef CONFIG_PM |
31ea7088 | 3322 | /** |
ad84db2e | 3323 | * megasas_suspend - driver suspend entry point |
3324 | * @pdev: PCI device structure | |
31ea7088 | 3325 | * @state: PCI power state to suspend routine |
3326 | */ | |
33139b21 | 3327 | static int |
31ea7088 | 3328 | megasas_suspend(struct pci_dev *pdev, pm_message_t state) |
3329 | { | |
3330 | struct Scsi_Host *host; | |
3331 | struct megasas_instance *instance; | |
3332 | ||
3333 | instance = pci_get_drvdata(pdev); | |
3334 | host = instance->host; | |
0c79e681 | 3335 | instance->unload = 1; |
31ea7088 | 3336 | |
ad84db2e | 3337 | if (poll_mode_io) |
3338 | del_timer_sync(&instance->io_completion_timer); | |
3339 | ||
31ea7088 | 3340 | megasas_flush_cache(instance); |
3341 | megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); | |
7e8a75f4 YB |
3342 | |
3343 | /* cancel the delayed work if this work still in queue */ | |
3344 | if (instance->ev != NULL) { | |
3345 | struct megasas_aen_event *ev = instance->ev; | |
3346 | cancel_delayed_work( | |
3347 | (struct delayed_work *)&ev->hotplug_work); | |
3348 | flush_scheduled_work(); | |
3349 | instance->ev = NULL; | |
3350 | } | |
3351 | ||
31ea7088 | 3352 | tasklet_kill(&instance->isr_tasklet); |
3353 | ||
3354 | pci_set_drvdata(instance->pdev, instance); | |
3355 | instance->instancet->disable_intr(instance->reg_set); | |
3356 | free_irq(instance->pdev->irq, instance); | |
3357 | ||
3358 | pci_save_state(pdev); | |
3359 | pci_disable_device(pdev); | |
3360 | ||
3361 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
3362 | ||
3363 | return 0; | |
3364 | } | |
3365 | ||
3366 | /** | |
3367 | * megasas_resume- driver resume entry point | |
3368 | * @pdev: PCI device structure | |
3369 | */ | |
33139b21 | 3370 | static int |
31ea7088 | 3371 | megasas_resume(struct pci_dev *pdev) |
3372 | { | |
3373 | int rval; | |
3374 | struct Scsi_Host *host; | |
3375 | struct megasas_instance *instance; | |
3376 | ||
3377 | instance = pci_get_drvdata(pdev); | |
3378 | host = instance->host; | |
3379 | pci_set_power_state(pdev, PCI_D0); | |
3380 | pci_enable_wake(pdev, PCI_D0, 0); | |
3381 | pci_restore_state(pdev); | |
3382 | ||
3383 | /* | |
3384 | * PCI prepping: enable device set bus mastering and dma mask | |
3385 | */ | |
aeab3fd7 | 3386 | rval = pci_enable_device_mem(pdev); |
31ea7088 | 3387 | |
3388 | if (rval) { | |
3389 | printk(KERN_ERR "megasas: Enable device failed\n"); | |
3390 | return rval; | |
3391 | } | |
3392 | ||
3393 | pci_set_master(pdev); | |
3394 | ||
3395 | if (megasas_set_dma_mask(pdev)) | |
3396 | goto fail_set_dma_mask; | |
3397 | ||
3398 | /* | |
3399 | * Initialize MFI Firmware | |
3400 | */ | |
3401 | ||
3402 | *instance->producer = 0; | |
3403 | *instance->consumer = 0; | |
3404 | ||
3405 | atomic_set(&instance->fw_outstanding, 0); | |
3406 | ||
3407 | /* | |
3408 | * We expect the FW state to be READY | |
3409 | */ | |
3410 | if (megasas_transition_to_ready(instance)) | |
3411 | goto fail_ready_state; | |
3412 | ||
3413 | if (megasas_issue_init_mfi(instance)) | |
3414 | goto fail_init_mfi; | |
3415 | ||
3416 | tasklet_init(&instance->isr_tasklet, megasas_complete_cmd_dpc, | |
3417 | (unsigned long)instance); | |
3418 | ||
3419 | /* | |
3420 | * Register IRQ | |
3421 | */ | |
3422 | if (request_irq(pdev->irq, megasas_isr, IRQF_SHARED, | |
3423 | "megasas", instance)) { | |
3424 | printk(KERN_ERR "megasas: Failed to register IRQ\n"); | |
3425 | goto fail_irq; | |
3426 | } | |
3427 | ||
3428 | instance->instancet->enable_intr(instance->reg_set); | |
3429 | ||
3430 | /* | |
3431 | * Initiate AEN (Asynchronous Event Notification) | |
3432 | */ | |
3433 | if (megasas_start_aen(instance)) | |
3434 | printk(KERN_ERR "megasas: Start AEN failed\n"); | |
3435 | ||
ad84db2e | 3436 | /* Initialize the cmd completion timer */ |
3437 | if (poll_mode_io) | |
3438 | megasas_start_timer(instance, &instance->io_completion_timer, | |
3439 | megasas_io_completion_timer, | |
3440 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
0c79e681 YB |
3441 | instance->unload = 0; |
3442 | ||
31ea7088 | 3443 | return 0; |
3444 | ||
3445 | fail_irq: | |
3446 | fail_init_mfi: | |
3447 | if (instance->evt_detail) | |
3448 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
3449 | instance->evt_detail, | |
3450 | instance->evt_detail_h); | |
3451 | ||
3452 | if (instance->producer) | |
3453 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
3454 | instance->producer_h); | |
3455 | if (instance->consumer) | |
3456 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
3457 | instance->consumer_h); | |
3458 | scsi_host_put(host); | |
3459 | ||
3460 | fail_set_dma_mask: | |
3461 | fail_ready_state: | |
3462 | ||
3463 | pci_disable_device(pdev); | |
3464 | ||
3465 | return -ENODEV; | |
3466 | } | |
33139b21 JS |
3467 | #else |
3468 | #define megasas_suspend NULL | |
3469 | #define megasas_resume NULL | |
3470 | #endif | |
31ea7088 | 3471 | |
c4a3e0a5 BS |
3472 | /** |
3473 | * megasas_detach_one - PCI hot"un"plug entry point | |
3474 | * @pdev: PCI device structure | |
3475 | */ | |
33139b21 | 3476 | static void __devexit megasas_detach_one(struct pci_dev *pdev) |
c4a3e0a5 BS |
3477 | { |
3478 | int i; | |
3479 | struct Scsi_Host *host; | |
3480 | struct megasas_instance *instance; | |
3481 | ||
3482 | instance = pci_get_drvdata(pdev); | |
c3518837 | 3483 | instance->unload = 1; |
c4a3e0a5 BS |
3484 | host = instance->host; |
3485 | ||
ad84db2e | 3486 | if (poll_mode_io) |
3487 | del_timer_sync(&instance->io_completion_timer); | |
3488 | ||
c4a3e0a5 BS |
3489 | scsi_remove_host(instance->host); |
3490 | megasas_flush_cache(instance); | |
31ea7088 | 3491 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
7e8a75f4 YB |
3492 | |
3493 | /* cancel the delayed work if this work still in queue*/ | |
3494 | if (instance->ev != NULL) { | |
3495 | struct megasas_aen_event *ev = instance->ev; | |
3496 | cancel_delayed_work( | |
3497 | (struct delayed_work *)&ev->hotplug_work); | |
3498 | flush_scheduled_work(); | |
3499 | instance->ev = NULL; | |
3500 | } | |
3501 | ||
5d018ad0 | 3502 | tasklet_kill(&instance->isr_tasklet); |
c4a3e0a5 BS |
3503 | |
3504 | /* | |
3505 | * Take the instance off the instance array. Note that we will not | |
3506 | * decrement the max_index. We let this array be sparse array | |
3507 | */ | |
3508 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
3509 | if (megasas_mgmt_info.instance[i] == instance) { | |
3510 | megasas_mgmt_info.count--; | |
3511 | megasas_mgmt_info.instance[i] = NULL; | |
3512 | ||
3513 | break; | |
3514 | } | |
3515 | } | |
3516 | ||
3517 | pci_set_drvdata(instance->pdev, NULL); | |
3518 | ||
b274cab7 | 3519 | instance->instancet->disable_intr(instance->reg_set); |
c4a3e0a5 BS |
3520 | |
3521 | free_irq(instance->pdev->irq, instance); | |
3522 | ||
3523 | megasas_release_mfi(instance); | |
3524 | ||
3525 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
3526 | instance->evt_detail, instance->evt_detail_h); | |
3527 | ||
3528 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
3529 | instance->producer_h); | |
3530 | ||
3531 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
3532 | instance->consumer_h); | |
3533 | ||
3534 | scsi_host_put(host); | |
3535 | ||
3536 | pci_set_drvdata(pdev, NULL); | |
3537 | ||
3538 | pci_disable_device(pdev); | |
3539 | ||
3540 | return; | |
3541 | } | |
3542 | ||
3543 | /** | |
3544 | * megasas_shutdown - Shutdown entry point | |
3545 | * @device: Generic device structure | |
3546 | */ | |
3547 | static void megasas_shutdown(struct pci_dev *pdev) | |
3548 | { | |
3549 | struct megasas_instance *instance = pci_get_drvdata(pdev); | |
0c79e681 | 3550 | instance->unload = 1; |
c4a3e0a5 | 3551 | megasas_flush_cache(instance); |
530e6fc1 | 3552 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
c4a3e0a5 BS |
3553 | } |
3554 | ||
3555 | /** | |
3556 | * megasas_mgmt_open - char node "open" entry point | |
3557 | */ | |
3558 | static int megasas_mgmt_open(struct inode *inode, struct file *filep) | |
3559 | { | |
f2b9857e | 3560 | cycle_kernel_lock(); |
c4a3e0a5 BS |
3561 | /* |
3562 | * Allow only those users with admin rights | |
3563 | */ | |
3564 | if (!capable(CAP_SYS_ADMIN)) | |
3565 | return -EACCES; | |
3566 | ||
3567 | return 0; | |
3568 | } | |
3569 | ||
c4a3e0a5 BS |
3570 | /** |
3571 | * megasas_mgmt_fasync - Async notifier registration from applications | |
3572 | * | |
3573 | * This function adds the calling process to a driver global queue. When an | |
3574 | * event occurs, SIGIO will be sent to all processes in this queue. | |
3575 | */ | |
3576 | static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) | |
3577 | { | |
3578 | int rc; | |
3579 | ||
0b950672 | 3580 | mutex_lock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
3581 | |
3582 | rc = fasync_helper(fd, filep, mode, &megasas_async_queue); | |
3583 | ||
0b950672 | 3584 | mutex_unlock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
3585 | |
3586 | if (rc >= 0) { | |
3587 | /* For sanity check when we get ioctl */ | |
3588 | filep->private_data = filep; | |
3589 | return 0; | |
3590 | } | |
3591 | ||
3592 | printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); | |
3593 | ||
3594 | return rc; | |
3595 | } | |
3596 | ||
c3518837 YB |
3597 | /** |
3598 | * megasas_mgmt_poll - char node "poll" entry point | |
3599 | * */ | |
3600 | static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) | |
3601 | { | |
3602 | unsigned int mask; | |
3603 | unsigned long flags; | |
3604 | poll_wait(file, &megasas_poll_wait, wait); | |
3605 | spin_lock_irqsave(&poll_aen_lock, flags); | |
3606 | if (megasas_poll_wait_aen) | |
3607 | mask = (POLLIN | POLLRDNORM); | |
3608 | else | |
3609 | mask = 0; | |
3610 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
3611 | return mask; | |
3612 | } | |
3613 | ||
c4a3e0a5 BS |
3614 | /** |
3615 | * megasas_mgmt_fw_ioctl - Issues management ioctls to FW | |
3616 | * @instance: Adapter soft state | |
3617 | * @argp: User's ioctl packet | |
3618 | */ | |
3619 | static int | |
3620 | megasas_mgmt_fw_ioctl(struct megasas_instance *instance, | |
3621 | struct megasas_iocpacket __user * user_ioc, | |
3622 | struct megasas_iocpacket *ioc) | |
3623 | { | |
3624 | struct megasas_sge32 *kern_sge32; | |
3625 | struct megasas_cmd *cmd; | |
3626 | void *kbuff_arr[MAX_IOCTL_SGE]; | |
3627 | dma_addr_t buf_handle = 0; | |
3628 | int error = 0, i; | |
3629 | void *sense = NULL; | |
3630 | dma_addr_t sense_handle; | |
7b2519af | 3631 | unsigned long *sense_ptr; |
c4a3e0a5 BS |
3632 | |
3633 | memset(kbuff_arr, 0, sizeof(kbuff_arr)); | |
3634 | ||
3635 | if (ioc->sge_count > MAX_IOCTL_SGE) { | |
3636 | printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", | |
3637 | ioc->sge_count, MAX_IOCTL_SGE); | |
3638 | return -EINVAL; | |
3639 | } | |
3640 | ||
3641 | cmd = megasas_get_cmd(instance); | |
3642 | if (!cmd) { | |
3643 | printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); | |
3644 | return -ENOMEM; | |
3645 | } | |
3646 | ||
3647 | /* | |
3648 | * User's IOCTL packet has 2 frames (maximum). Copy those two | |
3649 | * frames into our cmd's frames. cmd->frame's context will get | |
3650 | * overwritten when we copy from user's frames. So set that value | |
3651 | * alone separately | |
3652 | */ | |
3653 | memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); | |
3654 | cmd->frame->hdr.context = cmd->index; | |
c3518837 | 3655 | cmd->frame->hdr.pad_0 = 0; |
c4a3e0a5 BS |
3656 | |
3657 | /* | |
3658 | * The management interface between applications and the fw uses | |
3659 | * MFI frames. E.g, RAID configuration changes, LD property changes | |
3660 | * etc are accomplishes through different kinds of MFI frames. The | |
3661 | * driver needs to care only about substituting user buffers with | |
3662 | * kernel buffers in SGLs. The location of SGL is embedded in the | |
3663 | * struct iocpacket itself. | |
3664 | */ | |
3665 | kern_sge32 = (struct megasas_sge32 *) | |
3666 | ((unsigned long)cmd->frame + ioc->sgl_off); | |
3667 | ||
3668 | /* | |
3669 | * For each user buffer, create a mirror buffer and copy in | |
3670 | */ | |
3671 | for (i = 0; i < ioc->sge_count; i++) { | |
9f35fa8a | 3672 | kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, |
c4a3e0a5 | 3673 | ioc->sgl[i].iov_len, |
9f35fa8a | 3674 | &buf_handle, GFP_KERNEL); |
c4a3e0a5 BS |
3675 | if (!kbuff_arr[i]) { |
3676 | printk(KERN_DEBUG "megasas: Failed to alloc " | |
3677 | "kernel SGL buffer for IOCTL \n"); | |
3678 | error = -ENOMEM; | |
3679 | goto out; | |
3680 | } | |
3681 | ||
3682 | /* | |
3683 | * We don't change the dma_coherent_mask, so | |
3684 | * pci_alloc_consistent only returns 32bit addresses | |
3685 | */ | |
3686 | kern_sge32[i].phys_addr = (u32) buf_handle; | |
3687 | kern_sge32[i].length = ioc->sgl[i].iov_len; | |
3688 | ||
3689 | /* | |
3690 | * We created a kernel buffer corresponding to the | |
3691 | * user buffer. Now copy in from the user buffer | |
3692 | */ | |
3693 | if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, | |
3694 | (u32) (ioc->sgl[i].iov_len))) { | |
3695 | error = -EFAULT; | |
3696 | goto out; | |
3697 | } | |
3698 | } | |
3699 | ||
3700 | if (ioc->sense_len) { | |
9f35fa8a SP |
3701 | sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, |
3702 | &sense_handle, GFP_KERNEL); | |
c4a3e0a5 BS |
3703 | if (!sense) { |
3704 | error = -ENOMEM; | |
3705 | goto out; | |
3706 | } | |
3707 | ||
3708 | sense_ptr = | |
7b2519af | 3709 | (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); |
c4a3e0a5 BS |
3710 | *sense_ptr = sense_handle; |
3711 | } | |
3712 | ||
3713 | /* | |
3714 | * Set the sync_cmd flag so that the ISR knows not to complete this | |
3715 | * cmd to the SCSI mid-layer | |
3716 | */ | |
3717 | cmd->sync_cmd = 1; | |
3718 | megasas_issue_blocked_cmd(instance, cmd); | |
3719 | cmd->sync_cmd = 0; | |
3720 | ||
3721 | /* | |
3722 | * copy out the kernel buffers to user buffers | |
3723 | */ | |
3724 | for (i = 0; i < ioc->sge_count; i++) { | |
3725 | if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], | |
3726 | ioc->sgl[i].iov_len)) { | |
3727 | error = -EFAULT; | |
3728 | goto out; | |
3729 | } | |
3730 | } | |
3731 | ||
3732 | /* | |
3733 | * copy out the sense | |
3734 | */ | |
3735 | if (ioc->sense_len) { | |
3736 | /* | |
b70a41e0 | 3737 | * sense_ptr points to the location that has the user |
c4a3e0a5 BS |
3738 | * sense buffer address |
3739 | */ | |
7b2519af YB |
3740 | sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + |
3741 | ioc->sense_off); | |
c4a3e0a5 | 3742 | |
b70a41e0 | 3743 | if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), |
3744 | sense, ioc->sense_len)) { | |
b10c36a5 | 3745 | printk(KERN_ERR "megasas: Failed to copy out to user " |
3746 | "sense data\n"); | |
c4a3e0a5 BS |
3747 | error = -EFAULT; |
3748 | goto out; | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | /* | |
3753 | * copy the status codes returned by the fw | |
3754 | */ | |
3755 | if (copy_to_user(&user_ioc->frame.hdr.cmd_status, | |
3756 | &cmd->frame->hdr.cmd_status, sizeof(u8))) { | |
3757 | printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); | |
3758 | error = -EFAULT; | |
3759 | } | |
3760 | ||
3761 | out: | |
3762 | if (sense) { | |
9f35fa8a | 3763 | dma_free_coherent(&instance->pdev->dev, ioc->sense_len, |
c4a3e0a5 BS |
3764 | sense, sense_handle); |
3765 | } | |
3766 | ||
3767 | for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { | |
9f35fa8a | 3768 | dma_free_coherent(&instance->pdev->dev, |
c4a3e0a5 BS |
3769 | kern_sge32[i].length, |
3770 | kbuff_arr[i], kern_sge32[i].phys_addr); | |
3771 | } | |
3772 | ||
3773 | megasas_return_cmd(instance, cmd); | |
3774 | return error; | |
3775 | } | |
3776 | ||
c4a3e0a5 BS |
3777 | static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) |
3778 | { | |
3779 | struct megasas_iocpacket __user *user_ioc = | |
3780 | (struct megasas_iocpacket __user *)arg; | |
3781 | struct megasas_iocpacket *ioc; | |
3782 | struct megasas_instance *instance; | |
3783 | int error; | |
3784 | ||
3785 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); | |
3786 | if (!ioc) | |
3787 | return -ENOMEM; | |
3788 | ||
3789 | if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { | |
3790 | error = -EFAULT; | |
3791 | goto out_kfree_ioc; | |
3792 | } | |
3793 | ||
3794 | instance = megasas_lookup_instance(ioc->host_no); | |
3795 | if (!instance) { | |
3796 | error = -ENODEV; | |
3797 | goto out_kfree_ioc; | |
3798 | } | |
3799 | ||
0c79e681 YB |
3800 | if (instance->hw_crit_error == 1) { |
3801 | printk(KERN_DEBUG "Controller in Crit ERROR\n"); | |
3802 | error = -ENODEV; | |
3803 | goto out_kfree_ioc; | |
3804 | } | |
3805 | ||
3806 | if (instance->unload == 1) { | |
3807 | error = -ENODEV; | |
3808 | goto out_kfree_ioc; | |
3809 | } | |
3810 | ||
c4a3e0a5 BS |
3811 | /* |
3812 | * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds | |
3813 | */ | |
3814 | if (down_interruptible(&instance->ioctl_sem)) { | |
3815 | error = -ERESTARTSYS; | |
3816 | goto out_kfree_ioc; | |
3817 | } | |
3818 | error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); | |
3819 | up(&instance->ioctl_sem); | |
3820 | ||
3821 | out_kfree_ioc: | |
3822 | kfree(ioc); | |
3823 | return error; | |
3824 | } | |
3825 | ||
3826 | static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) | |
3827 | { | |
3828 | struct megasas_instance *instance; | |
3829 | struct megasas_aen aen; | |
3830 | int error; | |
3831 | ||
3832 | if (file->private_data != file) { | |
3833 | printk(KERN_DEBUG "megasas: fasync_helper was not " | |
3834 | "called first\n"); | |
3835 | return -EINVAL; | |
3836 | } | |
3837 | ||
3838 | if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) | |
3839 | return -EFAULT; | |
3840 | ||
3841 | instance = megasas_lookup_instance(aen.host_no); | |
3842 | ||
3843 | if (!instance) | |
3844 | return -ENODEV; | |
3845 | ||
0c79e681 YB |
3846 | if (instance->hw_crit_error == 1) { |
3847 | error = -ENODEV; | |
3848 | } | |
3849 | ||
3850 | if (instance->unload == 1) { | |
3851 | return -ENODEV; | |
3852 | } | |
3853 | ||
e5a69e27 | 3854 | mutex_lock(&instance->aen_mutex); |
c4a3e0a5 BS |
3855 | error = megasas_register_aen(instance, aen.seq_num, |
3856 | aen.class_locale_word); | |
e5a69e27 | 3857 | mutex_unlock(&instance->aen_mutex); |
c4a3e0a5 BS |
3858 | return error; |
3859 | } | |
3860 | ||
3861 | /** | |
3862 | * megasas_mgmt_ioctl - char node ioctl entry point | |
3863 | */ | |
3864 | static long | |
3865 | megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
3866 | { | |
3867 | switch (cmd) { | |
3868 | case MEGASAS_IOC_FIRMWARE: | |
3869 | return megasas_mgmt_ioctl_fw(file, arg); | |
3870 | ||
3871 | case MEGASAS_IOC_GET_AEN: | |
3872 | return megasas_mgmt_ioctl_aen(file, arg); | |
3873 | } | |
3874 | ||
3875 | return -ENOTTY; | |
3876 | } | |
3877 | ||
3878 | #ifdef CONFIG_COMPAT | |
3879 | static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) | |
3880 | { | |
3881 | struct compat_megasas_iocpacket __user *cioc = | |
3882 | (struct compat_megasas_iocpacket __user *)arg; | |
3883 | struct megasas_iocpacket __user *ioc = | |
3884 | compat_alloc_user_space(sizeof(struct megasas_iocpacket)); | |
3885 | int i; | |
3886 | int error = 0; | |
b3dc1a21 | 3887 | compat_uptr_t ptr; |
c4a3e0a5 | 3888 | |
83aabc1b JG |
3889 | if (clear_user(ioc, sizeof(*ioc))) |
3890 | return -EFAULT; | |
c4a3e0a5 BS |
3891 | |
3892 | if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || | |
3893 | copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || | |
3894 | copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || | |
3895 | copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || | |
3896 | copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || | |
3897 | copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) | |
3898 | return -EFAULT; | |
3899 | ||
b3dc1a21 TH |
3900 | /* |
3901 | * The sense_ptr is used in megasas_mgmt_fw_ioctl only when | |
3902 | * sense_len is not null, so prepare the 64bit value under | |
3903 | * the same condition. | |
3904 | */ | |
3905 | if (ioc->sense_len) { | |
3906 | void __user **sense_ioc_ptr = | |
3907 | (void __user **)(ioc->frame.raw + ioc->sense_off); | |
3908 | compat_uptr_t *sense_cioc_ptr = | |
3909 | (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); | |
3910 | if (get_user(ptr, sense_cioc_ptr) || | |
3911 | put_user(compat_ptr(ptr), sense_ioc_ptr)) | |
3912 | return -EFAULT; | |
3913 | } | |
c4a3e0a5 | 3914 | |
b3dc1a21 | 3915 | for (i = 0; i < MAX_IOCTL_SGE; i++) { |
c4a3e0a5 BS |
3916 | if (get_user(ptr, &cioc->sgl[i].iov_base) || |
3917 | put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || | |
3918 | copy_in_user(&ioc->sgl[i].iov_len, | |
3919 | &cioc->sgl[i].iov_len, sizeof(compat_size_t))) | |
3920 | return -EFAULT; | |
3921 | } | |
3922 | ||
3923 | error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); | |
3924 | ||
3925 | if (copy_in_user(&cioc->frame.hdr.cmd_status, | |
3926 | &ioc->frame.hdr.cmd_status, sizeof(u8))) { | |
3927 | printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); | |
3928 | return -EFAULT; | |
3929 | } | |
3930 | return error; | |
3931 | } | |
3932 | ||
3933 | static long | |
3934 | megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, | |
3935 | unsigned long arg) | |
3936 | { | |
3937 | switch (cmd) { | |
cb59aa6a SP |
3938 | case MEGASAS_IOC_FIRMWARE32: |
3939 | return megasas_mgmt_compat_ioctl_fw(file, arg); | |
c4a3e0a5 BS |
3940 | case MEGASAS_IOC_GET_AEN: |
3941 | return megasas_mgmt_ioctl_aen(file, arg); | |
3942 | } | |
3943 | ||
3944 | return -ENOTTY; | |
3945 | } | |
3946 | #endif | |
3947 | ||
3948 | /* | |
3949 | * File operations structure for management interface | |
3950 | */ | |
00977a59 | 3951 | static const struct file_operations megasas_mgmt_fops = { |
c4a3e0a5 BS |
3952 | .owner = THIS_MODULE, |
3953 | .open = megasas_mgmt_open, | |
c4a3e0a5 BS |
3954 | .fasync = megasas_mgmt_fasync, |
3955 | .unlocked_ioctl = megasas_mgmt_ioctl, | |
c3518837 | 3956 | .poll = megasas_mgmt_poll, |
c4a3e0a5 BS |
3957 | #ifdef CONFIG_COMPAT |
3958 | .compat_ioctl = megasas_mgmt_compat_ioctl, | |
3959 | #endif | |
3960 | }; | |
3961 | ||
3962 | /* | |
3963 | * PCI hotplug support registration structure | |
3964 | */ | |
3965 | static struct pci_driver megasas_pci_driver = { | |
3966 | ||
3967 | .name = "megaraid_sas", | |
3968 | .id_table = megasas_pci_table, | |
3969 | .probe = megasas_probe_one, | |
3970 | .remove = __devexit_p(megasas_detach_one), | |
31ea7088 | 3971 | .suspend = megasas_suspend, |
3972 | .resume = megasas_resume, | |
c4a3e0a5 BS |
3973 | .shutdown = megasas_shutdown, |
3974 | }; | |
3975 | ||
3976 | /* | |
3977 | * Sysfs driver attributes | |
3978 | */ | |
3979 | static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) | |
3980 | { | |
3981 | return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", | |
3982 | MEGASAS_VERSION); | |
3983 | } | |
3984 | ||
3985 | static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); | |
3986 | ||
3987 | static ssize_t | |
3988 | megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) | |
3989 | { | |
3990 | return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", | |
3991 | MEGASAS_RELDATE); | |
3992 | } | |
3993 | ||
3994 | static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, | |
3995 | NULL); | |
3996 | ||
72c4fd36 YB |
3997 | static ssize_t |
3998 | megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) | |
3999 | { | |
4000 | return sprintf(buf, "%u\n", support_poll_for_event); | |
4001 | } | |
4002 | ||
4003 | static DRIVER_ATTR(support_poll_for_event, S_IRUGO, | |
4004 | megasas_sysfs_show_support_poll_for_event, NULL); | |
4005 | ||
658dcedb SP |
4006 | static ssize_t |
4007 | megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) | |
4008 | { | |
ad84db2e | 4009 | return sprintf(buf, "%u\n", megasas_dbg_lvl); |
658dcedb SP |
4010 | } |
4011 | ||
4012 | static ssize_t | |
4013 | megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) | |
4014 | { | |
4015 | int retval = count; | |
4016 | if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ | |
4017 | printk(KERN_ERR "megasas: could not set dbg_lvl\n"); | |
4018 | retval = -EINVAL; | |
4019 | } | |
4020 | return retval; | |
4021 | } | |
4022 | ||
66dca9b8 | 4023 | static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, |
ad84db2e | 4024 | megasas_sysfs_set_dbg_lvl); |
4025 | ||
4026 | static ssize_t | |
4027 | megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) | |
4028 | { | |
4029 | return sprintf(buf, "%u\n", poll_mode_io); | |
4030 | } | |
4031 | ||
4032 | static ssize_t | |
4033 | megasas_sysfs_set_poll_mode_io(struct device_driver *dd, | |
4034 | const char *buf, size_t count) | |
4035 | { | |
4036 | int retval = count; | |
4037 | int tmp = poll_mode_io; | |
4038 | int i; | |
4039 | struct megasas_instance *instance; | |
4040 | ||
4041 | if (sscanf(buf, "%u", &poll_mode_io) < 1) { | |
4042 | printk(KERN_ERR "megasas: could not set poll_mode_io\n"); | |
4043 | retval = -EINVAL; | |
4044 | } | |
4045 | ||
4046 | /* | |
4047 | * Check if poll_mode_io is already set or is same as previous value | |
4048 | */ | |
4049 | if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) | |
4050 | goto out; | |
4051 | ||
4052 | if (poll_mode_io) { | |
4053 | /* | |
4054 | * Start timers for all adapters | |
4055 | */ | |
4056 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4057 | instance = megasas_mgmt_info.instance[i]; | |
4058 | if (instance) { | |
4059 | megasas_start_timer(instance, | |
4060 | &instance->io_completion_timer, | |
4061 | megasas_io_completion_timer, | |
4062 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
4063 | } | |
4064 | } | |
4065 | } else { | |
4066 | /* | |
4067 | * Delete timers for all adapters | |
4068 | */ | |
4069 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4070 | instance = megasas_mgmt_info.instance[i]; | |
4071 | if (instance) | |
4072 | del_timer_sync(&instance->io_completion_timer); | |
4073 | } | |
4074 | } | |
4075 | ||
4076 | out: | |
4077 | return retval; | |
4078 | } | |
4079 | ||
7e8a75f4 YB |
4080 | static void |
4081 | megasas_aen_polling(struct work_struct *work) | |
4082 | { | |
4083 | struct megasas_aen_event *ev = | |
4084 | container_of(work, struct megasas_aen_event, hotplug_work); | |
4085 | struct megasas_instance *instance = ev->instance; | |
4086 | union megasas_evt_class_locale class_locale; | |
4087 | struct Scsi_Host *host; | |
4088 | struct scsi_device *sdev1; | |
4089 | u16 pd_index = 0; | |
c9786842 | 4090 | u16 ld_index = 0; |
7e8a75f4 YB |
4091 | int i, j, doscan = 0; |
4092 | u32 seq_num; | |
4093 | int error; | |
4094 | ||
4095 | if (!instance) { | |
4096 | printk(KERN_ERR "invalid instance!\n"); | |
4097 | kfree(ev); | |
4098 | return; | |
4099 | } | |
4100 | instance->ev = NULL; | |
4101 | host = instance->host; | |
4102 | if (instance->evt_detail) { | |
4103 | ||
4104 | switch (instance->evt_detail->code) { | |
4105 | case MR_EVT_PD_INSERTED: | |
c9786842 YB |
4106 | if (megasas_get_pd_list(instance) == 0) { |
4107 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
4108 | for (j = 0; | |
4109 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4110 | j++) { | |
4111 | ||
4112 | pd_index = | |
4113 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4114 | ||
4115 | sdev1 = | |
4116 | scsi_device_lookup(host, i, j, 0); | |
4117 | ||
4118 | if (instance->pd_list[pd_index].driveState | |
4119 | == MR_PD_STATE_SYSTEM) { | |
4120 | if (!sdev1) { | |
4121 | scsi_add_device(host, i, j, 0); | |
4122 | } | |
4123 | ||
4124 | if (sdev1) | |
4125 | scsi_device_put(sdev1); | |
4126 | } | |
4127 | } | |
4128 | } | |
4129 | } | |
4130 | doscan = 0; | |
4131 | break; | |
4132 | ||
7e8a75f4 | 4133 | case MR_EVT_PD_REMOVED: |
c9786842 YB |
4134 | if (megasas_get_pd_list(instance) == 0) { |
4135 | megasas_get_pd_list(instance); | |
4136 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
4137 | for (j = 0; | |
4138 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4139 | j++) { | |
4140 | ||
4141 | pd_index = | |
4142 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4143 | ||
4144 | sdev1 = | |
4145 | scsi_device_lookup(host, i, j, 0); | |
4146 | ||
4147 | if (instance->pd_list[pd_index].driveState | |
4148 | == MR_PD_STATE_SYSTEM) { | |
4149 | if (sdev1) { | |
4150 | scsi_device_put(sdev1); | |
4151 | } | |
4152 | } else { | |
4153 | if (sdev1) { | |
4154 | scsi_remove_device(sdev1); | |
4155 | scsi_device_put(sdev1); | |
4156 | } | |
4157 | } | |
4158 | } | |
4159 | } | |
4160 | } | |
4161 | doscan = 0; | |
4162 | break; | |
4163 | ||
4164 | case MR_EVT_LD_OFFLINE: | |
4165 | case MR_EVT_LD_DELETED: | |
4166 | megasas_get_ld_list(instance); | |
4167 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
4168 | for (j = 0; | |
4169 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4170 | j++) { | |
4171 | ||
4172 | ld_index = | |
4173 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4174 | ||
4175 | sdev1 = scsi_device_lookup(host, | |
4176 | i + MEGASAS_MAX_LD_CHANNELS, | |
4177 | j, | |
4178 | 0); | |
4179 | ||
4180 | if (instance->ld_ids[ld_index] != 0xff) { | |
4181 | if (sdev1) { | |
4182 | scsi_device_put(sdev1); | |
4183 | } | |
4184 | } else { | |
4185 | if (sdev1) { | |
4186 | scsi_remove_device(sdev1); | |
4187 | scsi_device_put(sdev1); | |
4188 | } | |
4189 | } | |
4190 | } | |
4191 | } | |
4192 | doscan = 0; | |
4193 | break; | |
4194 | case MR_EVT_LD_CREATED: | |
4195 | megasas_get_ld_list(instance); | |
4196 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
4197 | for (j = 0; | |
4198 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
4199 | j++) { | |
4200 | ld_index = | |
4201 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4202 | ||
4203 | sdev1 = scsi_device_lookup(host, | |
4204 | i+MEGASAS_MAX_LD_CHANNELS, | |
4205 | j, 0); | |
4206 | ||
4207 | if (instance->ld_ids[ld_index] != | |
4208 | 0xff) { | |
4209 | if (!sdev1) { | |
4210 | scsi_add_device(host, | |
4211 | i + 2, | |
4212 | j, 0); | |
4213 | } | |
4214 | } | |
4215 | if (sdev1) { | |
4216 | scsi_device_put(sdev1); | |
4217 | } | |
4218 | } | |
4219 | } | |
4220 | doscan = 0; | |
4221 | break; | |
7e8a75f4 | 4222 | case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: |
c9786842 | 4223 | case MR_EVT_FOREIGN_CFG_IMPORTED: |
7e8a75f4 YB |
4224 | doscan = 1; |
4225 | break; | |
4226 | default: | |
4227 | doscan = 0; | |
4228 | break; | |
4229 | } | |
4230 | } else { | |
4231 | printk(KERN_ERR "invalid evt_detail!\n"); | |
4232 | kfree(ev); | |
4233 | return; | |
4234 | } | |
4235 | ||
4236 | if (doscan) { | |
4237 | printk(KERN_INFO "scanning ...\n"); | |
4238 | megasas_get_pd_list(instance); | |
4239 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
4240 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
4241 | pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; | |
4242 | sdev1 = scsi_device_lookup(host, i, j, 0); | |
4243 | if (instance->pd_list[pd_index].driveState == | |
4244 | MR_PD_STATE_SYSTEM) { | |
4245 | if (!sdev1) { | |
4246 | scsi_add_device(host, i, j, 0); | |
4247 | } | |
4248 | if (sdev1) | |
4249 | scsi_device_put(sdev1); | |
4250 | } else { | |
4251 | if (sdev1) { | |
4252 | scsi_remove_device(sdev1); | |
4253 | scsi_device_put(sdev1); | |
4254 | } | |
4255 | } | |
4256 | } | |
4257 | } | |
c9786842 YB |
4258 | |
4259 | megasas_get_ld_list(instance); | |
4260 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
4261 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
4262 | ld_index = | |
4263 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
4264 | ||
4265 | sdev1 = scsi_device_lookup(host, | |
4266 | i+MEGASAS_MAX_LD_CHANNELS, j, 0); | |
4267 | if (instance->ld_ids[ld_index] != 0xff) { | |
4268 | if (!sdev1) { | |
4269 | scsi_add_device(host, | |
4270 | i+2, | |
4271 | j, 0); | |
4272 | } else { | |
4273 | scsi_device_put(sdev1); | |
4274 | } | |
4275 | } else { | |
4276 | if (sdev1) { | |
4277 | scsi_remove_device(sdev1); | |
4278 | scsi_device_put(sdev1); | |
4279 | } | |
4280 | } | |
4281 | } | |
4282 | } | |
7e8a75f4 YB |
4283 | } |
4284 | ||
4285 | if ( instance->aen_cmd != NULL ) { | |
4286 | kfree(ev); | |
4287 | return ; | |
4288 | } | |
4289 | ||
4290 | seq_num = instance->evt_detail->seq_num + 1; | |
4291 | ||
4292 | /* Register AEN with FW for latest sequence number plus 1 */ | |
4293 | class_locale.members.reserved = 0; | |
4294 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
4295 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
4296 | mutex_lock(&instance->aen_mutex); | |
4297 | error = megasas_register_aen(instance, seq_num, | |
4298 | class_locale.word); | |
4299 | mutex_unlock(&instance->aen_mutex); | |
4300 | ||
4301 | if (error) | |
4302 | printk(KERN_ERR "register aen failed error %x\n", error); | |
4303 | ||
4304 | kfree(ev); | |
4305 | } | |
4306 | ||
4307 | ||
bb7d3f24 | 4308 | static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR, |
ad84db2e | 4309 | megasas_sysfs_show_poll_mode_io, |
4310 | megasas_sysfs_set_poll_mode_io); | |
658dcedb | 4311 | |
c4a3e0a5 BS |
4312 | /** |
4313 | * megasas_init - Driver load entry point | |
4314 | */ | |
4315 | static int __init megasas_init(void) | |
4316 | { | |
4317 | int rval; | |
4318 | ||
4319 | /* | |
4320 | * Announce driver version and other information | |
4321 | */ | |
4322 | printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, | |
4323 | MEGASAS_EXT_VERSION); | |
4324 | ||
72c4fd36 YB |
4325 | support_poll_for_event = 2; |
4326 | ||
c4a3e0a5 BS |
4327 | memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); |
4328 | ||
4329 | /* | |
4330 | * Register character device node | |
4331 | */ | |
4332 | rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); | |
4333 | ||
4334 | if (rval < 0) { | |
4335 | printk(KERN_DEBUG "megasas: failed to open device node\n"); | |
4336 | return rval; | |
4337 | } | |
4338 | ||
4339 | megasas_mgmt_majorno = rval; | |
4340 | ||
4341 | /* | |
4342 | * Register ourselves as PCI hotplug module | |
4343 | */ | |
4041b9cd | 4344 | rval = pci_register_driver(&megasas_pci_driver); |
c4a3e0a5 BS |
4345 | |
4346 | if (rval) { | |
4347 | printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); | |
83aabc1b JG |
4348 | goto err_pcidrv; |
4349 | } | |
4350 | ||
4351 | rval = driver_create_file(&megasas_pci_driver.driver, | |
4352 | &driver_attr_version); | |
4353 | if (rval) | |
4354 | goto err_dcf_attr_ver; | |
4355 | rval = driver_create_file(&megasas_pci_driver.driver, | |
4356 | &driver_attr_release_date); | |
4357 | if (rval) | |
4358 | goto err_dcf_rel_date; | |
72c4fd36 YB |
4359 | |
4360 | rval = driver_create_file(&megasas_pci_driver.driver, | |
4361 | &driver_attr_support_poll_for_event); | |
4362 | if (rval) | |
4363 | goto err_dcf_support_poll_for_event; | |
4364 | ||
83aabc1b JG |
4365 | rval = driver_create_file(&megasas_pci_driver.driver, |
4366 | &driver_attr_dbg_lvl); | |
4367 | if (rval) | |
4368 | goto err_dcf_dbg_lvl; | |
ad84db2e | 4369 | rval = driver_create_file(&megasas_pci_driver.driver, |
4370 | &driver_attr_poll_mode_io); | |
4371 | if (rval) | |
4372 | goto err_dcf_poll_mode_io; | |
c4a3e0a5 BS |
4373 | |
4374 | return rval; | |
ad84db2e | 4375 | |
4376 | err_dcf_poll_mode_io: | |
4377 | driver_remove_file(&megasas_pci_driver.driver, | |
4378 | &driver_attr_dbg_lvl); | |
83aabc1b | 4379 | err_dcf_dbg_lvl: |
72c4fd36 YB |
4380 | driver_remove_file(&megasas_pci_driver.driver, |
4381 | &driver_attr_support_poll_for_event); | |
4382 | ||
4383 | err_dcf_support_poll_for_event: | |
83aabc1b JG |
4384 | driver_remove_file(&megasas_pci_driver.driver, |
4385 | &driver_attr_release_date); | |
72c4fd36 | 4386 | |
83aabc1b JG |
4387 | err_dcf_rel_date: |
4388 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
4389 | err_dcf_attr_ver: | |
4390 | pci_unregister_driver(&megasas_pci_driver); | |
4391 | err_pcidrv: | |
4392 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
4393 | return rval; | |
c4a3e0a5 BS |
4394 | } |
4395 | ||
4396 | /** | |
4397 | * megasas_exit - Driver unload entry point | |
4398 | */ | |
4399 | static void __exit megasas_exit(void) | |
4400 | { | |
ad84db2e | 4401 | driver_remove_file(&megasas_pci_driver.driver, |
4402 | &driver_attr_poll_mode_io); | |
658dcedb SP |
4403 | driver_remove_file(&megasas_pci_driver.driver, |
4404 | &driver_attr_dbg_lvl); | |
83aabc1b JG |
4405 | driver_remove_file(&megasas_pci_driver.driver, |
4406 | &driver_attr_release_date); | |
4407 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
c4a3e0a5 BS |
4408 | |
4409 | pci_unregister_driver(&megasas_pci_driver); | |
4410 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
4411 | } | |
4412 | ||
4413 | module_init(megasas_init); | |
4414 | module_exit(megasas_exit); |