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c4a3e0a5 | 1 | /* |
3f1530c1 | 2 | * Linux MegaRAID driver for SAS based RAID controllers |
c4a3e0a5 | 3 | * |
3f1530c1 | 4 | * Copyright (c) 2009-2011 LSI Corporation. |
c4a3e0a5 | 5 | * |
3f1530c1 | 6 | * This program is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
c4a3e0a5 | 10 | * |
3f1530c1 | 11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
c4a3e0a5 | 15 | * |
3f1530c1 | 16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
c4a3e0a5 | 19 | * |
3f1530c1 | 20 | * FILE: megaraid_sas_base.c |
8d6f5cea | 21 | * Version : v00.00.06.12-rc1 |
c4a3e0a5 | 22 | * |
3f1530c1 | 23 | * Authors: LSI Corporation |
24 | * Sreenivas Bagalkote | |
25 | * Sumant Patro | |
26 | * Bo Yang | |
00fa2b19 | 27 | * Adam Radford <linuxraid@lsi.com> |
c4a3e0a5 | 28 | * |
3f1530c1 | 29 | * Send feedback to: <megaraidlinux@lsi.com> |
30 | * | |
31 | * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035 | |
32 | * ATTN: Linuxraid | |
c4a3e0a5 BS |
33 | */ |
34 | ||
35 | #include <linux/kernel.h> | |
36 | #include <linux/types.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/list.h> | |
c4a3e0a5 BS |
39 | #include <linux/moduleparam.h> |
40 | #include <linux/module.h> | |
41 | #include <linux/spinlock.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/delay.h> | |
44 | #include <linux/uio.h> | |
5a0e3ad6 | 45 | #include <linux/slab.h> |
c4a3e0a5 | 46 | #include <asm/uaccess.h> |
43399236 | 47 | #include <linux/fs.h> |
c4a3e0a5 | 48 | #include <linux/compat.h> |
cf62a0a5 | 49 | #include <linux/blkdev.h> |
0b950672 | 50 | #include <linux/mutex.h> |
c3518837 | 51 | #include <linux/poll.h> |
c4a3e0a5 BS |
52 | |
53 | #include <scsi/scsi.h> | |
54 | #include <scsi/scsi_cmnd.h> | |
55 | #include <scsi/scsi_device.h> | |
56 | #include <scsi/scsi_host.h> | |
4bcde509 | 57 | #include <scsi/scsi_tcq.h> |
9c915a8c | 58 | #include "megaraid_sas_fusion.h" |
c4a3e0a5 BS |
59 | #include "megaraid_sas.h" |
60 | ||
ad84db2e | 61 | /* |
62 | * poll_mode_io:1- schedule complete completion from q cmd | |
63 | */ | |
64 | static unsigned int poll_mode_io; | |
65 | module_param_named(poll_mode_io, poll_mode_io, int, 0); | |
66 | MODULE_PARM_DESC(poll_mode_io, | |
67 | "Complete cmds from IO path, (default=0)"); | |
68 | ||
1fd10685 YB |
69 | /* |
70 | * Number of sectors per IO command | |
71 | * Will be set in megasas_init_mfi if user does not provide | |
72 | */ | |
73 | static unsigned int max_sectors; | |
74 | module_param_named(max_sectors, max_sectors, int, 0); | |
75 | MODULE_PARM_DESC(max_sectors, | |
76 | "Maximum number of sectors per IO command"); | |
77 | ||
80d9da98 | 78 | static int msix_disable; |
79 | module_param(msix_disable, int, S_IRUGO); | |
80 | MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0"); | |
81 | ||
c4a3e0a5 BS |
82 | MODULE_LICENSE("GPL"); |
83 | MODULE_VERSION(MEGASAS_VERSION); | |
3d6d174a | 84 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
f28cd7cf | 85 | MODULE_DESCRIPTION("LSI MegaRAID SAS Driver"); |
c4a3e0a5 | 86 | |
058a8fac | 87 | int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); |
39a98554 | 88 | static int megasas_get_pd_list(struct megasas_instance *instance); |
89 | static int megasas_issue_init_mfi(struct megasas_instance *instance); | |
90 | static int megasas_register_aen(struct megasas_instance *instance, | |
91 | u32 seq_num, u32 class_locale_word); | |
c4a3e0a5 BS |
92 | /* |
93 | * PCI ID table for all supported controllers | |
94 | */ | |
95 | static struct pci_device_id megasas_pci_table[] = { | |
96 | ||
f3d7271c HK |
97 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)}, |
98 | /* xscale IOP */ | |
99 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)}, | |
100 | /* ppc IOP */ | |
af7a5647 | 101 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)}, |
102 | /* ppc IOP */ | |
6610a6b3 YB |
103 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)}, |
104 | /* gen2*/ | |
105 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)}, | |
106 | /* gen2*/ | |
87911122 YB |
107 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)}, |
108 | /* skinny*/ | |
109 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)}, | |
110 | /* skinny*/ | |
f3d7271c HK |
111 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)}, |
112 | /* xscale IOP, vega */ | |
113 | {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)}, | |
114 | /* xscale IOP */ | |
9c915a8c | 115 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)}, |
116 | /* Fusion */ | |
36807e67 | 117 | {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)}, |
118 | /* Invader */ | |
f3d7271c | 119 | {} |
c4a3e0a5 BS |
120 | }; |
121 | ||
122 | MODULE_DEVICE_TABLE(pci, megasas_pci_table); | |
123 | ||
124 | static int megasas_mgmt_majorno; | |
125 | static struct megasas_mgmt_info megasas_mgmt_info; | |
126 | static struct fasync_struct *megasas_async_queue; | |
0b950672 | 127 | static DEFINE_MUTEX(megasas_async_queue_mutex); |
c4a3e0a5 | 128 | |
c3518837 YB |
129 | static int megasas_poll_wait_aen; |
130 | static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait); | |
72c4fd36 | 131 | static u32 support_poll_for_event; |
9c915a8c | 132 | u32 megasas_dbg_lvl; |
837f5fe8 | 133 | static u32 support_device_change; |
658dcedb | 134 | |
c3518837 YB |
135 | /* define lock for aen poll */ |
136 | spinlock_t poll_aen_lock; | |
137 | ||
9c915a8c | 138 | void |
7343eb65 | 139 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
140 | u8 alt_status); | |
ebf054b0 | 141 | static u32 |
142 | megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs); | |
143 | static int | |
144 | megasas_adp_reset_gen2(struct megasas_instance *instance, | |
145 | struct megasas_register_set __iomem *reg_set); | |
cd50ba8e | 146 | static irqreturn_t megasas_isr(int irq, void *devp); |
147 | static u32 | |
148 | megasas_init_adapter_mfi(struct megasas_instance *instance); | |
149 | u32 | |
150 | megasas_build_and_issue_cmd(struct megasas_instance *instance, | |
151 | struct scsi_cmnd *scmd); | |
152 | static void megasas_complete_cmd_dpc(unsigned long instance_addr); | |
9c915a8c | 153 | void |
154 | megasas_release_fusion(struct megasas_instance *instance); | |
155 | int | |
156 | megasas_ioc_init_fusion(struct megasas_instance *instance); | |
157 | void | |
158 | megasas_free_cmds_fusion(struct megasas_instance *instance); | |
159 | u8 | |
160 | megasas_get_map_info(struct megasas_instance *instance); | |
161 | int | |
162 | megasas_sync_map_info(struct megasas_instance *instance); | |
163 | int | |
164 | wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd); | |
165 | void megasas_reset_reply_desc(struct megasas_instance *instance); | |
166 | u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map, | |
167 | struct LD_LOAD_BALANCE_INFO *lbInfo); | |
168 | int megasas_reset_fusion(struct Scsi_Host *shost); | |
169 | void megasas_fusion_ocr_wq(struct work_struct *work); | |
cd50ba8e | 170 | |
171 | void | |
172 | megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
173 | { | |
174 | instance->instancet->fire_cmd(instance, | |
175 | cmd->frame_phys_addr, 0, instance->reg_set); | |
176 | } | |
7343eb65 | 177 | |
c4a3e0a5 BS |
178 | /** |
179 | * megasas_get_cmd - Get a command from the free pool | |
180 | * @instance: Adapter soft state | |
181 | * | |
182 | * Returns a free command from the pool | |
183 | */ | |
9c915a8c | 184 | struct megasas_cmd *megasas_get_cmd(struct megasas_instance |
c4a3e0a5 BS |
185 | *instance) |
186 | { | |
187 | unsigned long flags; | |
188 | struct megasas_cmd *cmd = NULL; | |
189 | ||
190 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
191 | ||
192 | if (!list_empty(&instance->cmd_pool)) { | |
193 | cmd = list_entry((&instance->cmd_pool)->next, | |
194 | struct megasas_cmd, list); | |
195 | list_del_init(&cmd->list); | |
196 | } else { | |
197 | printk(KERN_ERR "megasas: Command pool empty!\n"); | |
198 | } | |
199 | ||
200 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
201 | return cmd; | |
202 | } | |
203 | ||
204 | /** | |
205 | * megasas_return_cmd - Return a cmd to free command pool | |
206 | * @instance: Adapter soft state | |
207 | * @cmd: Command packet to be returned to free command pool | |
208 | */ | |
9c915a8c | 209 | inline void |
c4a3e0a5 BS |
210 | megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) |
211 | { | |
212 | unsigned long flags; | |
213 | ||
214 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
215 | ||
216 | cmd->scmd = NULL; | |
9c915a8c | 217 | cmd->frame_count = 0; |
e5f93a36 | 218 | if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && |
219 | (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && | |
220 | (reset_devices)) | |
221 | cmd->frame->hdr.cmd = MFI_CMD_INVALID; | |
c4a3e0a5 BS |
222 | list_add_tail(&cmd->list, &instance->cmd_pool); |
223 | ||
224 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
225 | } | |
226 | ||
1341c939 SP |
227 | |
228 | /** | |
0d49016b | 229 | * The following functions are defined for xscale |
1341c939 SP |
230 | * (deviceid : 1064R, PERC5) controllers |
231 | */ | |
232 | ||
c4a3e0a5 | 233 | /** |
1341c939 | 234 | * megasas_enable_intr_xscale - Enables interrupts |
c4a3e0a5 BS |
235 | * @regs: MFI register set |
236 | */ | |
237 | static inline void | |
1341c939 | 238 | megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs) |
c4a3e0a5 | 239 | { |
39a98554 | 240 | writel(0, &(regs)->outbound_intr_mask); |
c4a3e0a5 BS |
241 | |
242 | /* Dummy readl to force pci flush */ | |
243 | readl(®s->outbound_intr_mask); | |
244 | } | |
245 | ||
b274cab7 SP |
246 | /** |
247 | * megasas_disable_intr_xscale -Disables interrupt | |
248 | * @regs: MFI register set | |
249 | */ | |
250 | static inline void | |
251 | megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs) | |
252 | { | |
253 | u32 mask = 0x1f; | |
254 | writel(mask, ®s->outbound_intr_mask); | |
255 | /* Dummy readl to force pci flush */ | |
256 | readl(®s->outbound_intr_mask); | |
257 | } | |
258 | ||
1341c939 SP |
259 | /** |
260 | * megasas_read_fw_status_reg_xscale - returns the current FW status value | |
261 | * @regs: MFI register set | |
262 | */ | |
263 | static u32 | |
264 | megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs) | |
265 | { | |
266 | return readl(&(regs)->outbound_msg_0); | |
267 | } | |
268 | /** | |
269 | * megasas_clear_interrupt_xscale - Check & clear interrupt | |
270 | * @regs: MFI register set | |
271 | */ | |
0d49016b | 272 | static int |
1341c939 SP |
273 | megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs) |
274 | { | |
275 | u32 status; | |
39a98554 | 276 | u32 mfiStatus = 0; |
1341c939 SP |
277 | /* |
278 | * Check if it is our interrupt | |
279 | */ | |
280 | status = readl(®s->outbound_intr_status); | |
281 | ||
39a98554 | 282 | if (status & MFI_OB_INTR_STATUS_MASK) |
283 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
284 | if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT) | |
285 | mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
1341c939 SP |
286 | |
287 | /* | |
288 | * Clear the interrupt by writing back the same value | |
289 | */ | |
39a98554 | 290 | if (mfiStatus) |
291 | writel(status, ®s->outbound_intr_status); | |
1341c939 | 292 | |
06f579de YB |
293 | /* Dummy readl to force pci flush */ |
294 | readl(®s->outbound_intr_status); | |
295 | ||
39a98554 | 296 | return mfiStatus; |
1341c939 SP |
297 | } |
298 | ||
299 | /** | |
300 | * megasas_fire_cmd_xscale - Sends command to the FW | |
301 | * @frame_phys_addr : Physical address of cmd | |
302 | * @frame_count : Number of frames for the command | |
303 | * @regs : MFI register set | |
304 | */ | |
0d49016b | 305 | static inline void |
0c79e681 YB |
306 | megasas_fire_cmd_xscale(struct megasas_instance *instance, |
307 | dma_addr_t frame_phys_addr, | |
308 | u32 frame_count, | |
309 | struct megasas_register_set __iomem *regs) | |
1341c939 | 310 | { |
39a98554 | 311 | unsigned long flags; |
312 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1341c939 SP |
313 | writel((frame_phys_addr >> 3)|(frame_count), |
314 | &(regs)->inbound_queue_port); | |
39a98554 | 315 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
316 | } | |
317 | ||
318 | /** | |
319 | * megasas_adp_reset_xscale - For controller reset | |
320 | * @regs: MFI register set | |
321 | */ | |
322 | static int | |
323 | megasas_adp_reset_xscale(struct megasas_instance *instance, | |
324 | struct megasas_register_set __iomem *regs) | |
325 | { | |
326 | u32 i; | |
327 | u32 pcidata; | |
328 | writel(MFI_ADP_RESET, ®s->inbound_doorbell); | |
329 | ||
330 | for (i = 0; i < 3; i++) | |
331 | msleep(1000); /* sleep for 3 secs */ | |
332 | pcidata = 0; | |
333 | pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata); | |
334 | printk(KERN_NOTICE "pcidata = %x\n", pcidata); | |
335 | if (pcidata & 0x2) { | |
336 | printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata); | |
337 | pcidata &= ~0x2; | |
338 | pci_write_config_dword(instance->pdev, | |
339 | MFI_1068_PCSR_OFFSET, pcidata); | |
340 | ||
341 | for (i = 0; i < 2; i++) | |
342 | msleep(1000); /* need to wait 2 secs again */ | |
343 | ||
344 | pcidata = 0; | |
345 | pci_read_config_dword(instance->pdev, | |
346 | MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata); | |
347 | printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata); | |
348 | if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) { | |
349 | printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata); | |
350 | pcidata = 0; | |
351 | pci_write_config_dword(instance->pdev, | |
352 | MFI_1068_FW_HANDSHAKE_OFFSET, pcidata); | |
353 | } | |
354 | } | |
355 | return 0; | |
356 | } | |
357 | ||
358 | /** | |
359 | * megasas_check_reset_xscale - For controller reset check | |
360 | * @regs: MFI register set | |
361 | */ | |
362 | static int | |
363 | megasas_check_reset_xscale(struct megasas_instance *instance, | |
364 | struct megasas_register_set __iomem *regs) | |
365 | { | |
366 | u32 consumer; | |
367 | consumer = *instance->consumer; | |
368 | ||
369 | if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) && | |
370 | (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) { | |
371 | return 1; | |
372 | } | |
373 | return 0; | |
1341c939 SP |
374 | } |
375 | ||
376 | static struct megasas_instance_template megasas_instance_template_xscale = { | |
377 | ||
378 | .fire_cmd = megasas_fire_cmd_xscale, | |
379 | .enable_intr = megasas_enable_intr_xscale, | |
b274cab7 | 380 | .disable_intr = megasas_disable_intr_xscale, |
1341c939 SP |
381 | .clear_intr = megasas_clear_intr_xscale, |
382 | .read_fw_status_reg = megasas_read_fw_status_reg_xscale, | |
39a98554 | 383 | .adp_reset = megasas_adp_reset_xscale, |
384 | .check_reset = megasas_check_reset_xscale, | |
cd50ba8e | 385 | .service_isr = megasas_isr, |
386 | .tasklet = megasas_complete_cmd_dpc, | |
387 | .init_adapter = megasas_init_adapter_mfi, | |
388 | .build_and_issue_cmd = megasas_build_and_issue_cmd, | |
389 | .issue_dcmd = megasas_issue_dcmd, | |
1341c939 SP |
390 | }; |
391 | ||
392 | /** | |
0d49016b | 393 | * This is the end of set of functions & definitions specific |
1341c939 SP |
394 | * to xscale (deviceid : 1064R, PERC5) controllers |
395 | */ | |
396 | ||
f9876f0b | 397 | /** |
0d49016b | 398 | * The following functions are defined for ppc (deviceid : 0x60) |
f9876f0b SP |
399 | * controllers |
400 | */ | |
401 | ||
402 | /** | |
403 | * megasas_enable_intr_ppc - Enables interrupts | |
404 | * @regs: MFI register set | |
405 | */ | |
406 | static inline void | |
407 | megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs) | |
408 | { | |
409 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
0d49016b | 410 | |
39a98554 | 411 | writel(~0x80000000, &(regs)->outbound_intr_mask); |
f9876f0b SP |
412 | |
413 | /* Dummy readl to force pci flush */ | |
414 | readl(®s->outbound_intr_mask); | |
415 | } | |
416 | ||
b274cab7 SP |
417 | /** |
418 | * megasas_disable_intr_ppc - Disable interrupt | |
419 | * @regs: MFI register set | |
420 | */ | |
421 | static inline void | |
422 | megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs) | |
423 | { | |
424 | u32 mask = 0xFFFFFFFF; | |
425 | writel(mask, ®s->outbound_intr_mask); | |
426 | /* Dummy readl to force pci flush */ | |
427 | readl(®s->outbound_intr_mask); | |
428 | } | |
429 | ||
f9876f0b SP |
430 | /** |
431 | * megasas_read_fw_status_reg_ppc - returns the current FW status value | |
432 | * @regs: MFI register set | |
433 | */ | |
434 | static u32 | |
435 | megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs) | |
436 | { | |
437 | return readl(&(regs)->outbound_scratch_pad); | |
438 | } | |
439 | ||
440 | /** | |
441 | * megasas_clear_interrupt_ppc - Check & clear interrupt | |
442 | * @regs: MFI register set | |
443 | */ | |
0d49016b | 444 | static int |
f9876f0b SP |
445 | megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs) |
446 | { | |
3cc6851f | 447 | u32 status, mfiStatus = 0; |
448 | ||
f9876f0b SP |
449 | /* |
450 | * Check if it is our interrupt | |
451 | */ | |
452 | status = readl(®s->outbound_intr_status); | |
453 | ||
3cc6851f | 454 | if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT) |
455 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
456 | ||
457 | if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) | |
458 | mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
f9876f0b SP |
459 | |
460 | /* | |
461 | * Clear the interrupt by writing back the same value | |
462 | */ | |
463 | writel(status, ®s->outbound_doorbell_clear); | |
464 | ||
06f579de YB |
465 | /* Dummy readl to force pci flush */ |
466 | readl(®s->outbound_doorbell_clear); | |
467 | ||
3cc6851f | 468 | return mfiStatus; |
f9876f0b | 469 | } |
3cc6851f | 470 | |
f9876f0b SP |
471 | /** |
472 | * megasas_fire_cmd_ppc - Sends command to the FW | |
473 | * @frame_phys_addr : Physical address of cmd | |
474 | * @frame_count : Number of frames for the command | |
475 | * @regs : MFI register set | |
476 | */ | |
0d49016b | 477 | static inline void |
0c79e681 YB |
478 | megasas_fire_cmd_ppc(struct megasas_instance *instance, |
479 | dma_addr_t frame_phys_addr, | |
480 | u32 frame_count, | |
481 | struct megasas_register_set __iomem *regs) | |
f9876f0b | 482 | { |
39a98554 | 483 | unsigned long flags; |
484 | spin_lock_irqsave(&instance->hba_lock, flags); | |
0d49016b | 485 | writel((frame_phys_addr | (frame_count<<1))|1, |
f9876f0b | 486 | &(regs)->inbound_queue_port); |
39a98554 | 487 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
f9876f0b SP |
488 | } |
489 | ||
39a98554 | 490 | /** |
491 | * megasas_check_reset_ppc - For controller reset check | |
492 | * @regs: MFI register set | |
493 | */ | |
494 | static int | |
495 | megasas_check_reset_ppc(struct megasas_instance *instance, | |
496 | struct megasas_register_set __iomem *regs) | |
497 | { | |
3cc6851f | 498 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) |
499 | return 1; | |
500 | ||
39a98554 | 501 | return 0; |
502 | } | |
3cc6851f | 503 | |
f9876f0b | 504 | static struct megasas_instance_template megasas_instance_template_ppc = { |
0d49016b | 505 | |
f9876f0b SP |
506 | .fire_cmd = megasas_fire_cmd_ppc, |
507 | .enable_intr = megasas_enable_intr_ppc, | |
b274cab7 | 508 | .disable_intr = megasas_disable_intr_ppc, |
f9876f0b SP |
509 | .clear_intr = megasas_clear_intr_ppc, |
510 | .read_fw_status_reg = megasas_read_fw_status_reg_ppc, | |
3cc6851f | 511 | .adp_reset = megasas_adp_reset_xscale, |
39a98554 | 512 | .check_reset = megasas_check_reset_ppc, |
cd50ba8e | 513 | .service_isr = megasas_isr, |
514 | .tasklet = megasas_complete_cmd_dpc, | |
515 | .init_adapter = megasas_init_adapter_mfi, | |
516 | .build_and_issue_cmd = megasas_build_and_issue_cmd, | |
517 | .issue_dcmd = megasas_issue_dcmd, | |
f9876f0b SP |
518 | }; |
519 | ||
87911122 YB |
520 | /** |
521 | * megasas_enable_intr_skinny - Enables interrupts | |
522 | * @regs: MFI register set | |
523 | */ | |
524 | static inline void | |
525 | megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs) | |
526 | { | |
527 | writel(0xFFFFFFFF, &(regs)->outbound_intr_mask); | |
528 | ||
529 | writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
530 | ||
531 | /* Dummy readl to force pci flush */ | |
532 | readl(®s->outbound_intr_mask); | |
533 | } | |
534 | ||
535 | /** | |
536 | * megasas_disable_intr_skinny - Disables interrupt | |
537 | * @regs: MFI register set | |
538 | */ | |
539 | static inline void | |
540 | megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs) | |
541 | { | |
542 | u32 mask = 0xFFFFFFFF; | |
543 | writel(mask, ®s->outbound_intr_mask); | |
544 | /* Dummy readl to force pci flush */ | |
545 | readl(®s->outbound_intr_mask); | |
546 | } | |
547 | ||
548 | /** | |
549 | * megasas_read_fw_status_reg_skinny - returns the current FW status value | |
550 | * @regs: MFI register set | |
551 | */ | |
552 | static u32 | |
553 | megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs) | |
554 | { | |
555 | return readl(&(regs)->outbound_scratch_pad); | |
556 | } | |
557 | ||
558 | /** | |
559 | * megasas_clear_interrupt_skinny - Check & clear interrupt | |
560 | * @regs: MFI register set | |
561 | */ | |
562 | static int | |
563 | megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs) | |
564 | { | |
565 | u32 status; | |
ebf054b0 | 566 | u32 mfiStatus = 0; |
567 | ||
87911122 YB |
568 | /* |
569 | * Check if it is our interrupt | |
570 | */ | |
571 | status = readl(®s->outbound_intr_status); | |
572 | ||
573 | if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) { | |
39a98554 | 574 | return 0; |
87911122 YB |
575 | } |
576 | ||
ebf054b0 | 577 | /* |
578 | * Check if it is our interrupt | |
579 | */ | |
580 | if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) == | |
581 | MFI_STATE_FAULT) { | |
582 | mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
583 | } else | |
584 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
585 | ||
87911122 YB |
586 | /* |
587 | * Clear the interrupt by writing back the same value | |
588 | */ | |
589 | writel(status, ®s->outbound_intr_status); | |
590 | ||
591 | /* | |
592 | * dummy read to flush PCI | |
593 | */ | |
594 | readl(®s->outbound_intr_status); | |
595 | ||
ebf054b0 | 596 | return mfiStatus; |
87911122 YB |
597 | } |
598 | ||
599 | /** | |
600 | * megasas_fire_cmd_skinny - Sends command to the FW | |
601 | * @frame_phys_addr : Physical address of cmd | |
602 | * @frame_count : Number of frames for the command | |
603 | * @regs : MFI register set | |
604 | */ | |
605 | static inline void | |
0c79e681 YB |
606 | megasas_fire_cmd_skinny(struct megasas_instance *instance, |
607 | dma_addr_t frame_phys_addr, | |
608 | u32 frame_count, | |
87911122 YB |
609 | struct megasas_register_set __iomem *regs) |
610 | { | |
0c79e681 | 611 | unsigned long flags; |
39a98554 | 612 | spin_lock_irqsave(&instance->hba_lock, flags); |
87911122 YB |
613 | writel(0, &(regs)->inbound_high_queue_port); |
614 | writel((frame_phys_addr | (frame_count<<1))|1, | |
615 | &(regs)->inbound_low_queue_port); | |
39a98554 | 616 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
617 | } | |
618 | ||
39a98554 | 619 | /** |
620 | * megasas_check_reset_skinny - For controller reset check | |
621 | * @regs: MFI register set | |
622 | */ | |
623 | static int | |
624 | megasas_check_reset_skinny(struct megasas_instance *instance, | |
625 | struct megasas_register_set __iomem *regs) | |
626 | { | |
3cc6851f | 627 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) |
628 | return 1; | |
629 | ||
39a98554 | 630 | return 0; |
87911122 YB |
631 | } |
632 | ||
633 | static struct megasas_instance_template megasas_instance_template_skinny = { | |
634 | ||
635 | .fire_cmd = megasas_fire_cmd_skinny, | |
636 | .enable_intr = megasas_enable_intr_skinny, | |
637 | .disable_intr = megasas_disable_intr_skinny, | |
638 | .clear_intr = megasas_clear_intr_skinny, | |
639 | .read_fw_status_reg = megasas_read_fw_status_reg_skinny, | |
ebf054b0 | 640 | .adp_reset = megasas_adp_reset_gen2, |
39a98554 | 641 | .check_reset = megasas_check_reset_skinny, |
cd50ba8e | 642 | .service_isr = megasas_isr, |
643 | .tasklet = megasas_complete_cmd_dpc, | |
644 | .init_adapter = megasas_init_adapter_mfi, | |
645 | .build_and_issue_cmd = megasas_build_and_issue_cmd, | |
646 | .issue_dcmd = megasas_issue_dcmd, | |
87911122 YB |
647 | }; |
648 | ||
649 | ||
6610a6b3 YB |
650 | /** |
651 | * The following functions are defined for gen2 (deviceid : 0x78 0x79) | |
652 | * controllers | |
653 | */ | |
654 | ||
655 | /** | |
656 | * megasas_enable_intr_gen2 - Enables interrupts | |
657 | * @regs: MFI register set | |
658 | */ | |
659 | static inline void | |
660 | megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs) | |
661 | { | |
662 | writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear); | |
663 | ||
664 | /* write ~0x00000005 (4 & 1) to the intr mask*/ | |
665 | writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); | |
666 | ||
667 | /* Dummy readl to force pci flush */ | |
668 | readl(®s->outbound_intr_mask); | |
669 | } | |
670 | ||
671 | /** | |
672 | * megasas_disable_intr_gen2 - Disables interrupt | |
673 | * @regs: MFI register set | |
674 | */ | |
675 | static inline void | |
676 | megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs) | |
677 | { | |
678 | u32 mask = 0xFFFFFFFF; | |
679 | writel(mask, ®s->outbound_intr_mask); | |
680 | /* Dummy readl to force pci flush */ | |
681 | readl(®s->outbound_intr_mask); | |
682 | } | |
683 | ||
684 | /** | |
685 | * megasas_read_fw_status_reg_gen2 - returns the current FW status value | |
686 | * @regs: MFI register set | |
687 | */ | |
688 | static u32 | |
689 | megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs) | |
690 | { | |
691 | return readl(&(regs)->outbound_scratch_pad); | |
692 | } | |
693 | ||
694 | /** | |
695 | * megasas_clear_interrupt_gen2 - Check & clear interrupt | |
696 | * @regs: MFI register set | |
697 | */ | |
698 | static int | |
699 | megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs) | |
700 | { | |
701 | u32 status; | |
39a98554 | 702 | u32 mfiStatus = 0; |
6610a6b3 YB |
703 | /* |
704 | * Check if it is our interrupt | |
705 | */ | |
706 | status = readl(®s->outbound_intr_status); | |
707 | ||
39a98554 | 708 | if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) { |
709 | mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE; | |
710 | } | |
711 | if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) { | |
712 | mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE; | |
713 | } | |
6610a6b3 YB |
714 | |
715 | /* | |
716 | * Clear the interrupt by writing back the same value | |
717 | */ | |
39a98554 | 718 | if (mfiStatus) |
719 | writel(status, ®s->outbound_doorbell_clear); | |
6610a6b3 YB |
720 | |
721 | /* Dummy readl to force pci flush */ | |
722 | readl(®s->outbound_intr_status); | |
723 | ||
39a98554 | 724 | return mfiStatus; |
6610a6b3 YB |
725 | } |
726 | /** | |
727 | * megasas_fire_cmd_gen2 - Sends command to the FW | |
728 | * @frame_phys_addr : Physical address of cmd | |
729 | * @frame_count : Number of frames for the command | |
730 | * @regs : MFI register set | |
731 | */ | |
732 | static inline void | |
0c79e681 YB |
733 | megasas_fire_cmd_gen2(struct megasas_instance *instance, |
734 | dma_addr_t frame_phys_addr, | |
735 | u32 frame_count, | |
6610a6b3 YB |
736 | struct megasas_register_set __iomem *regs) |
737 | { | |
39a98554 | 738 | unsigned long flags; |
739 | spin_lock_irqsave(&instance->hba_lock, flags); | |
6610a6b3 YB |
740 | writel((frame_phys_addr | (frame_count<<1))|1, |
741 | &(regs)->inbound_queue_port); | |
39a98554 | 742 | spin_unlock_irqrestore(&instance->hba_lock, flags); |
743 | } | |
744 | ||
745 | /** | |
746 | * megasas_adp_reset_gen2 - For controller reset | |
747 | * @regs: MFI register set | |
748 | */ | |
749 | static int | |
750 | megasas_adp_reset_gen2(struct megasas_instance *instance, | |
751 | struct megasas_register_set __iomem *reg_set) | |
752 | { | |
753 | u32 retry = 0 ; | |
754 | u32 HostDiag; | |
ebf054b0 | 755 | u32 *seq_offset = ®_set->seq_offset; |
756 | u32 *hostdiag_offset = ®_set->host_diag; | |
757 | ||
758 | if (instance->instancet == &megasas_instance_template_skinny) { | |
759 | seq_offset = ®_set->fusion_seq_offset; | |
760 | hostdiag_offset = ®_set->fusion_host_diag; | |
761 | } | |
762 | ||
763 | writel(0, seq_offset); | |
764 | writel(4, seq_offset); | |
765 | writel(0xb, seq_offset); | |
766 | writel(2, seq_offset); | |
767 | writel(7, seq_offset); | |
768 | writel(0xd, seq_offset); | |
39a98554 | 769 | |
39a98554 | 770 | msleep(1000); |
771 | ||
ebf054b0 | 772 | HostDiag = (u32)readl(hostdiag_offset); |
39a98554 | 773 | |
774 | while ( !( HostDiag & DIAG_WRITE_ENABLE) ) { | |
775 | msleep(100); | |
ebf054b0 | 776 | HostDiag = (u32)readl(hostdiag_offset); |
39a98554 | 777 | printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n", |
778 | retry, HostDiag); | |
779 | ||
780 | if (retry++ >= 100) | |
781 | return 1; | |
782 | ||
783 | } | |
784 | ||
785 | printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag); | |
786 | ||
ebf054b0 | 787 | writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset); |
39a98554 | 788 | |
789 | ssleep(10); | |
790 | ||
ebf054b0 | 791 | HostDiag = (u32)readl(hostdiag_offset); |
39a98554 | 792 | while ( ( HostDiag & DIAG_RESET_ADAPTER) ) { |
793 | msleep(100); | |
ebf054b0 | 794 | HostDiag = (u32)readl(hostdiag_offset); |
39a98554 | 795 | printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n", |
796 | retry, HostDiag); | |
797 | ||
798 | if (retry++ >= 1000) | |
799 | return 1; | |
800 | ||
801 | } | |
802 | return 0; | |
803 | } | |
804 | ||
805 | /** | |
806 | * megasas_check_reset_gen2 - For controller reset check | |
807 | * @regs: MFI register set | |
808 | */ | |
809 | static int | |
810 | megasas_check_reset_gen2(struct megasas_instance *instance, | |
811 | struct megasas_register_set __iomem *regs) | |
812 | { | |
707e09bd YB |
813 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { |
814 | return 1; | |
815 | } | |
816 | ||
39a98554 | 817 | return 0; |
6610a6b3 YB |
818 | } |
819 | ||
820 | static struct megasas_instance_template megasas_instance_template_gen2 = { | |
821 | ||
822 | .fire_cmd = megasas_fire_cmd_gen2, | |
823 | .enable_intr = megasas_enable_intr_gen2, | |
824 | .disable_intr = megasas_disable_intr_gen2, | |
825 | .clear_intr = megasas_clear_intr_gen2, | |
826 | .read_fw_status_reg = megasas_read_fw_status_reg_gen2, | |
39a98554 | 827 | .adp_reset = megasas_adp_reset_gen2, |
828 | .check_reset = megasas_check_reset_gen2, | |
cd50ba8e | 829 | .service_isr = megasas_isr, |
830 | .tasklet = megasas_complete_cmd_dpc, | |
831 | .init_adapter = megasas_init_adapter_mfi, | |
832 | .build_and_issue_cmd = megasas_build_and_issue_cmd, | |
833 | .issue_dcmd = megasas_issue_dcmd, | |
6610a6b3 YB |
834 | }; |
835 | ||
f9876f0b SP |
836 | /** |
837 | * This is the end of set of functions & definitions | |
39a98554 | 838 | * specific to gen2 (deviceid : 0x78, 0x79) controllers |
f9876f0b SP |
839 | */ |
840 | ||
9c915a8c | 841 | /* |
842 | * Template added for TB (Fusion) | |
843 | */ | |
844 | extern struct megasas_instance_template megasas_instance_template_fusion; | |
845 | ||
c4a3e0a5 BS |
846 | /** |
847 | * megasas_issue_polled - Issues a polling command | |
848 | * @instance: Adapter soft state | |
0d49016b | 849 | * @cmd: Command packet to be issued |
c4a3e0a5 BS |
850 | * |
851 | * For polling, MFI requires the cmd_status to be set to 0xFF before posting. | |
852 | */ | |
9c915a8c | 853 | int |
c4a3e0a5 BS |
854 | megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd) |
855 | { | |
c4a3e0a5 BS |
856 | |
857 | struct megasas_header *frame_hdr = &cmd->frame->hdr; | |
858 | ||
859 | frame_hdr->cmd_status = 0xFF; | |
860 | frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE; | |
861 | ||
862 | /* | |
863 | * Issue the frame using inbound queue port | |
864 | */ | |
9c915a8c | 865 | instance->instancet->issue_dcmd(instance, cmd); |
c4a3e0a5 BS |
866 | |
867 | /* | |
868 | * Wait for cmd_status to change | |
869 | */ | |
9c915a8c | 870 | return wait_and_poll(instance, cmd); |
c4a3e0a5 BS |
871 | } |
872 | ||
873 | /** | |
874 | * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds | |
875 | * @instance: Adapter soft state | |
876 | * @cmd: Command to be issued | |
877 | * | |
878 | * This function waits on an event for the command to be returned from ISR. | |
2a3681e5 | 879 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs |
c4a3e0a5 BS |
880 | * Used to issue ioctl commands. |
881 | */ | |
882 | static int | |
883 | megasas_issue_blocked_cmd(struct megasas_instance *instance, | |
884 | struct megasas_cmd *cmd) | |
885 | { | |
886 | cmd->cmd_status = ENODATA; | |
887 | ||
9c915a8c | 888 | instance->instancet->issue_dcmd(instance, cmd); |
c4a3e0a5 | 889 | |
39a98554 | 890 | wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA); |
c4a3e0a5 BS |
891 | |
892 | return 0; | |
893 | } | |
894 | ||
895 | /** | |
896 | * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd | |
897 | * @instance: Adapter soft state | |
898 | * @cmd_to_abort: Previously issued cmd to be aborted | |
899 | * | |
8e572bab | 900 | * MFI firmware can abort previously issued AEN command (automatic event |
c4a3e0a5 | 901 | * notification). The megasas_issue_blocked_abort_cmd() issues such abort |
2a3681e5 SP |
902 | * cmd and waits for return status. |
903 | * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs | |
c4a3e0a5 BS |
904 | */ |
905 | static int | |
906 | megasas_issue_blocked_abort_cmd(struct megasas_instance *instance, | |
907 | struct megasas_cmd *cmd_to_abort) | |
908 | { | |
909 | struct megasas_cmd *cmd; | |
910 | struct megasas_abort_frame *abort_fr; | |
911 | ||
912 | cmd = megasas_get_cmd(instance); | |
913 | ||
914 | if (!cmd) | |
915 | return -1; | |
916 | ||
917 | abort_fr = &cmd->frame->abort; | |
918 | ||
919 | /* | |
920 | * Prepare and issue the abort frame | |
921 | */ | |
922 | abort_fr->cmd = MFI_CMD_ABORT; | |
923 | abort_fr->cmd_status = 0xFF; | |
924 | abort_fr->flags = 0; | |
925 | abort_fr->abort_context = cmd_to_abort->index; | |
926 | abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr; | |
927 | abort_fr->abort_mfi_phys_addr_hi = 0; | |
928 | ||
929 | cmd->sync_cmd = 1; | |
930 | cmd->cmd_status = 0xFF; | |
931 | ||
9c915a8c | 932 | instance->instancet->issue_dcmd(instance, cmd); |
c4a3e0a5 BS |
933 | |
934 | /* | |
935 | * Wait for this cmd to complete | |
936 | */ | |
39a98554 | 937 | wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF); |
938 | cmd->sync_cmd = 0; | |
c4a3e0a5 BS |
939 | |
940 | megasas_return_cmd(instance, cmd); | |
941 | return 0; | |
942 | } | |
943 | ||
944 | /** | |
945 | * megasas_make_sgl32 - Prepares 32-bit SGL | |
946 | * @instance: Adapter soft state | |
947 | * @scp: SCSI command from the mid-layer | |
948 | * @mfi_sgl: SGL to be filled in | |
949 | * | |
950 | * If successful, this function returns the number of SG elements. Otherwise, | |
951 | * it returnes -1. | |
952 | */ | |
858119e1 | 953 | static int |
c4a3e0a5 BS |
954 | megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp, |
955 | union megasas_sgl *mfi_sgl) | |
956 | { | |
957 | int i; | |
958 | int sge_count; | |
959 | struct scatterlist *os_sgl; | |
960 | ||
155d98f0 FT |
961 | sge_count = scsi_dma_map(scp); |
962 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 963 | |
155d98f0 FT |
964 | if (sge_count) { |
965 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
966 | mfi_sgl->sge32[i].length = sg_dma_len(os_sgl); | |
967 | mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl); | |
968 | } | |
c4a3e0a5 | 969 | } |
c4a3e0a5 BS |
970 | return sge_count; |
971 | } | |
972 | ||
973 | /** | |
974 | * megasas_make_sgl64 - Prepares 64-bit SGL | |
975 | * @instance: Adapter soft state | |
976 | * @scp: SCSI command from the mid-layer | |
977 | * @mfi_sgl: SGL to be filled in | |
978 | * | |
979 | * If successful, this function returns the number of SG elements. Otherwise, | |
980 | * it returnes -1. | |
981 | */ | |
858119e1 | 982 | static int |
c4a3e0a5 BS |
983 | megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp, |
984 | union megasas_sgl *mfi_sgl) | |
985 | { | |
986 | int i; | |
987 | int sge_count; | |
988 | struct scatterlist *os_sgl; | |
989 | ||
155d98f0 FT |
990 | sge_count = scsi_dma_map(scp); |
991 | BUG_ON(sge_count < 0); | |
c4a3e0a5 | 992 | |
155d98f0 FT |
993 | if (sge_count) { |
994 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
995 | mfi_sgl->sge64[i].length = sg_dma_len(os_sgl); | |
996 | mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl); | |
997 | } | |
c4a3e0a5 | 998 | } |
c4a3e0a5 BS |
999 | return sge_count; |
1000 | } | |
1001 | ||
f4c9a131 YB |
1002 | /** |
1003 | * megasas_make_sgl_skinny - Prepares IEEE SGL | |
1004 | * @instance: Adapter soft state | |
1005 | * @scp: SCSI command from the mid-layer | |
1006 | * @mfi_sgl: SGL to be filled in | |
1007 | * | |
1008 | * If successful, this function returns the number of SG elements. Otherwise, | |
1009 | * it returnes -1. | |
1010 | */ | |
1011 | static int | |
1012 | megasas_make_sgl_skinny(struct megasas_instance *instance, | |
1013 | struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl) | |
1014 | { | |
1015 | int i; | |
1016 | int sge_count; | |
1017 | struct scatterlist *os_sgl; | |
1018 | ||
1019 | sge_count = scsi_dma_map(scp); | |
1020 | ||
1021 | if (sge_count) { | |
1022 | scsi_for_each_sg(scp, os_sgl, sge_count, i) { | |
1023 | mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl); | |
1024 | mfi_sgl->sge_skinny[i].phys_addr = | |
1025 | sg_dma_address(os_sgl); | |
707e09bd | 1026 | mfi_sgl->sge_skinny[i].flag = 0; |
f4c9a131 YB |
1027 | } |
1028 | } | |
1029 | return sge_count; | |
1030 | } | |
1031 | ||
b1df99d9 SP |
1032 | /** |
1033 | * megasas_get_frame_count - Computes the number of frames | |
d532dbe2 | 1034 | * @frame_type : type of frame- io or pthru frame |
b1df99d9 SP |
1035 | * @sge_count : number of sg elements |
1036 | * | |
1037 | * Returns the number of frames required for numnber of sge's (sge_count) | |
1038 | */ | |
1039 | ||
f4c9a131 YB |
1040 | static u32 megasas_get_frame_count(struct megasas_instance *instance, |
1041 | u8 sge_count, u8 frame_type) | |
b1df99d9 SP |
1042 | { |
1043 | int num_cnt; | |
1044 | int sge_bytes; | |
1045 | u32 sge_sz; | |
1046 | u32 frame_count=0; | |
1047 | ||
1048 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
1049 | sizeof(struct megasas_sge32); | |
1050 | ||
f4c9a131 YB |
1051 | if (instance->flag_ieee) { |
1052 | sge_sz = sizeof(struct megasas_sge_skinny); | |
1053 | } | |
1054 | ||
b1df99d9 | 1055 | /* |
d532dbe2 | 1056 | * Main frame can contain 2 SGEs for 64-bit SGLs and |
1057 | * 3 SGEs for 32-bit SGLs for ldio & | |
1058 | * 1 SGEs for 64-bit SGLs and | |
1059 | * 2 SGEs for 32-bit SGLs for pthru frame | |
1060 | */ | |
1061 | if (unlikely(frame_type == PTHRU_FRAME)) { | |
f4c9a131 YB |
1062 | if (instance->flag_ieee == 1) { |
1063 | num_cnt = sge_count - 1; | |
1064 | } else if (IS_DMA64) | |
d532dbe2 | 1065 | num_cnt = sge_count - 1; |
1066 | else | |
1067 | num_cnt = sge_count - 2; | |
1068 | } else { | |
f4c9a131 YB |
1069 | if (instance->flag_ieee == 1) { |
1070 | num_cnt = sge_count - 1; | |
1071 | } else if (IS_DMA64) | |
d532dbe2 | 1072 | num_cnt = sge_count - 2; |
1073 | else | |
1074 | num_cnt = sge_count - 3; | |
1075 | } | |
b1df99d9 SP |
1076 | |
1077 | if(num_cnt>0){ | |
1078 | sge_bytes = sge_sz * num_cnt; | |
1079 | ||
1080 | frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) + | |
1081 | ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ; | |
1082 | } | |
1083 | /* Main frame */ | |
1084 | frame_count +=1; | |
1085 | ||
1086 | if (frame_count > 7) | |
1087 | frame_count = 8; | |
1088 | return frame_count; | |
1089 | } | |
1090 | ||
c4a3e0a5 BS |
1091 | /** |
1092 | * megasas_build_dcdb - Prepares a direct cdb (DCDB) command | |
1093 | * @instance: Adapter soft state | |
1094 | * @scp: SCSI command | |
1095 | * @cmd: Command to be prepared in | |
1096 | * | |
1097 | * This function prepares CDB commands. These are typcially pass-through | |
1098 | * commands to the devices. | |
1099 | */ | |
858119e1 | 1100 | static int |
c4a3e0a5 BS |
1101 | megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp, |
1102 | struct megasas_cmd *cmd) | |
1103 | { | |
c4a3e0a5 BS |
1104 | u32 is_logical; |
1105 | u32 device_id; | |
1106 | u16 flags = 0; | |
1107 | struct megasas_pthru_frame *pthru; | |
1108 | ||
1109 | is_logical = MEGASAS_IS_LOGICAL(scp); | |
1110 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
1111 | pthru = (struct megasas_pthru_frame *)cmd->frame; | |
1112 | ||
1113 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
1114 | flags = MFI_FRAME_DIR_WRITE; | |
1115 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
1116 | flags = MFI_FRAME_DIR_READ; | |
1117 | else if (scp->sc_data_direction == PCI_DMA_NONE) | |
1118 | flags = MFI_FRAME_DIR_NONE; | |
1119 | ||
f4c9a131 YB |
1120 | if (instance->flag_ieee == 1) { |
1121 | flags |= MFI_FRAME_IEEE; | |
1122 | } | |
1123 | ||
c4a3e0a5 BS |
1124 | /* |
1125 | * Prepare the DCDB frame | |
1126 | */ | |
1127 | pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO; | |
1128 | pthru->cmd_status = 0x0; | |
1129 | pthru->scsi_status = 0x0; | |
1130 | pthru->target_id = device_id; | |
1131 | pthru->lun = scp->device->lun; | |
1132 | pthru->cdb_len = scp->cmd_len; | |
1133 | pthru->timeout = 0; | |
780a3762 | 1134 | pthru->pad_0 = 0; |
c4a3e0a5 | 1135 | pthru->flags = flags; |
155d98f0 | 1136 | pthru->data_xfer_len = scsi_bufflen(scp); |
c4a3e0a5 BS |
1137 | |
1138 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1139 | ||
8d568253 YB |
1140 | /* |
1141 | * If the command is for the tape device, set the | |
1142 | * pthru timeout to the os layer timeout value. | |
1143 | */ | |
1144 | if (scp->device->type == TYPE_TAPE) { | |
1145 | if ((scp->request->timeout / HZ) > 0xFFFF) | |
1146 | pthru->timeout = 0xFFFF; | |
1147 | else | |
1148 | pthru->timeout = scp->request->timeout / HZ; | |
1149 | } | |
1150 | ||
c4a3e0a5 BS |
1151 | /* |
1152 | * Construct SGL | |
1153 | */ | |
f4c9a131 YB |
1154 | if (instance->flag_ieee == 1) { |
1155 | pthru->flags |= MFI_FRAME_SGL64; | |
1156 | pthru->sge_count = megasas_make_sgl_skinny(instance, scp, | |
1157 | &pthru->sgl); | |
1158 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
1159 | pthru->flags |= MFI_FRAME_SGL64; |
1160 | pthru->sge_count = megasas_make_sgl64(instance, scp, | |
1161 | &pthru->sgl); | |
1162 | } else | |
1163 | pthru->sge_count = megasas_make_sgl32(instance, scp, | |
1164 | &pthru->sgl); | |
1165 | ||
bdc6fb8d YB |
1166 | if (pthru->sge_count > instance->max_num_sge) { |
1167 | printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n", | |
1168 | pthru->sge_count); | |
1169 | return 0; | |
1170 | } | |
1171 | ||
c4a3e0a5 BS |
1172 | /* |
1173 | * Sense info specific | |
1174 | */ | |
1175 | pthru->sense_len = SCSI_SENSE_BUFFERSIZE; | |
1176 | pthru->sense_buf_phys_addr_hi = 0; | |
1177 | pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
1178 | ||
c4a3e0a5 BS |
1179 | /* |
1180 | * Compute the total number of frames this command consumes. FW uses | |
1181 | * this number to pull sufficient number of frames from host memory. | |
1182 | */ | |
f4c9a131 | 1183 | cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count, |
d532dbe2 | 1184 | PTHRU_FRAME); |
c4a3e0a5 BS |
1185 | |
1186 | return cmd->frame_count; | |
1187 | } | |
1188 | ||
1189 | /** | |
1190 | * megasas_build_ldio - Prepares IOs to logical devices | |
1191 | * @instance: Adapter soft state | |
1192 | * @scp: SCSI command | |
fd589a8f | 1193 | * @cmd: Command to be prepared |
c4a3e0a5 BS |
1194 | * |
1195 | * Frames (and accompanying SGLs) for regular SCSI IOs use this function. | |
1196 | */ | |
858119e1 | 1197 | static int |
c4a3e0a5 BS |
1198 | megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp, |
1199 | struct megasas_cmd *cmd) | |
1200 | { | |
c4a3e0a5 BS |
1201 | u32 device_id; |
1202 | u8 sc = scp->cmnd[0]; | |
1203 | u16 flags = 0; | |
1204 | struct megasas_io_frame *ldio; | |
1205 | ||
1206 | device_id = MEGASAS_DEV_INDEX(instance, scp); | |
1207 | ldio = (struct megasas_io_frame *)cmd->frame; | |
1208 | ||
1209 | if (scp->sc_data_direction == PCI_DMA_TODEVICE) | |
1210 | flags = MFI_FRAME_DIR_WRITE; | |
1211 | else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) | |
1212 | flags = MFI_FRAME_DIR_READ; | |
1213 | ||
f4c9a131 YB |
1214 | if (instance->flag_ieee == 1) { |
1215 | flags |= MFI_FRAME_IEEE; | |
1216 | } | |
1217 | ||
c4a3e0a5 | 1218 | /* |
b1df99d9 | 1219 | * Prepare the Logical IO frame: 2nd bit is zero for all read cmds |
c4a3e0a5 BS |
1220 | */ |
1221 | ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ; | |
1222 | ldio->cmd_status = 0x0; | |
1223 | ldio->scsi_status = 0x0; | |
1224 | ldio->target_id = device_id; | |
1225 | ldio->timeout = 0; | |
1226 | ldio->reserved_0 = 0; | |
1227 | ldio->pad_0 = 0; | |
1228 | ldio->flags = flags; | |
1229 | ldio->start_lba_hi = 0; | |
1230 | ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0; | |
1231 | ||
1232 | /* | |
1233 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1234 | */ | |
1235 | if (scp->cmd_len == 6) { | |
1236 | ldio->lba_count = (u32) scp->cmnd[4]; | |
1237 | ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) | | |
1238 | ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; | |
1239 | ||
1240 | ldio->start_lba_lo &= 0x1FFFFF; | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1245 | */ | |
1246 | else if (scp->cmd_len == 10) { | |
1247 | ldio->lba_count = (u32) scp->cmnd[8] | | |
1248 | ((u32) scp->cmnd[7] << 8); | |
1249 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
1250 | ((u32) scp->cmnd[3] << 16) | | |
1251 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1252 | } | |
1253 | ||
1254 | /* | |
1255 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1256 | */ | |
1257 | else if (scp->cmd_len == 12) { | |
1258 | ldio->lba_count = ((u32) scp->cmnd[6] << 24) | | |
1259 | ((u32) scp->cmnd[7] << 16) | | |
1260 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
1261 | ||
1262 | ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) | | |
1263 | ((u32) scp->cmnd[3] << 16) | | |
1264 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1265 | } | |
1266 | ||
1267 | /* | |
1268 | * 16-byte READ(0x88) or WRITE(0x8A) cdb | |
1269 | */ | |
1270 | else if (scp->cmd_len == 16) { | |
1271 | ldio->lba_count = ((u32) scp->cmnd[10] << 24) | | |
1272 | ((u32) scp->cmnd[11] << 16) | | |
1273 | ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; | |
1274 | ||
1275 | ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) | | |
1276 | ((u32) scp->cmnd[7] << 16) | | |
1277 | ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; | |
1278 | ||
1279 | ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) | | |
1280 | ((u32) scp->cmnd[3] << 16) | | |
1281 | ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; | |
1282 | ||
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * Construct SGL | |
1287 | */ | |
f4c9a131 YB |
1288 | if (instance->flag_ieee) { |
1289 | ldio->flags |= MFI_FRAME_SGL64; | |
1290 | ldio->sge_count = megasas_make_sgl_skinny(instance, scp, | |
1291 | &ldio->sgl); | |
1292 | } else if (IS_DMA64) { | |
c4a3e0a5 BS |
1293 | ldio->flags |= MFI_FRAME_SGL64; |
1294 | ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl); | |
1295 | } else | |
1296 | ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl); | |
1297 | ||
bdc6fb8d YB |
1298 | if (ldio->sge_count > instance->max_num_sge) { |
1299 | printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n", | |
1300 | ldio->sge_count); | |
1301 | return 0; | |
1302 | } | |
1303 | ||
c4a3e0a5 BS |
1304 | /* |
1305 | * Sense info specific | |
1306 | */ | |
1307 | ldio->sense_len = SCSI_SENSE_BUFFERSIZE; | |
1308 | ldio->sense_buf_phys_addr_hi = 0; | |
1309 | ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr; | |
1310 | ||
b1df99d9 SP |
1311 | /* |
1312 | * Compute the total number of frames this command consumes. FW uses | |
1313 | * this number to pull sufficient number of frames from host memory. | |
1314 | */ | |
f4c9a131 YB |
1315 | cmd->frame_count = megasas_get_frame_count(instance, |
1316 | ldio->sge_count, IO_FRAME); | |
c4a3e0a5 BS |
1317 | |
1318 | return cmd->frame_count; | |
1319 | } | |
1320 | ||
1321 | /** | |
cb59aa6a SP |
1322 | * megasas_is_ldio - Checks if the cmd is for logical drive |
1323 | * @scmd: SCSI command | |
0d49016b | 1324 | * |
cb59aa6a | 1325 | * Called by megasas_queue_command to find out if the command to be queued |
0d49016b | 1326 | * is a logical drive command |
c4a3e0a5 | 1327 | */ |
9c915a8c | 1328 | inline int megasas_is_ldio(struct scsi_cmnd *cmd) |
c4a3e0a5 | 1329 | { |
cb59aa6a SP |
1330 | if (!MEGASAS_IS_LOGICAL(cmd)) |
1331 | return 0; | |
1332 | switch (cmd->cmnd[0]) { | |
1333 | case READ_10: | |
1334 | case WRITE_10: | |
1335 | case READ_12: | |
1336 | case WRITE_12: | |
1337 | case READ_6: | |
1338 | case WRITE_6: | |
1339 | case READ_16: | |
1340 | case WRITE_16: | |
1341 | return 1; | |
1342 | default: | |
1343 | return 0; | |
c4a3e0a5 | 1344 | } |
c4a3e0a5 BS |
1345 | } |
1346 | ||
658dcedb SP |
1347 | /** |
1348 | * megasas_dump_pending_frames - Dumps the frame address of all pending cmds | |
1349 | * in FW | |
1350 | * @instance: Adapter soft state | |
1351 | */ | |
1352 | static inline void | |
1353 | megasas_dump_pending_frames(struct megasas_instance *instance) | |
1354 | { | |
1355 | struct megasas_cmd *cmd; | |
1356 | int i,n; | |
1357 | union megasas_sgl *mfi_sgl; | |
1358 | struct megasas_io_frame *ldio; | |
1359 | struct megasas_pthru_frame *pthru; | |
1360 | u32 sgcount; | |
1361 | u32 max_cmd = instance->max_fw_cmds; | |
1362 | ||
1363 | printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no); | |
1364 | printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding)); | |
1365 | if (IS_DMA64) | |
1366 | printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no); | |
1367 | else | |
1368 | printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no); | |
1369 | ||
1370 | printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no); | |
1371 | for (i = 0; i < max_cmd; i++) { | |
1372 | cmd = instance->cmd_list[i]; | |
1373 | if(!cmd->scmd) | |
1374 | continue; | |
1375 | printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr); | |
1376 | if (megasas_is_ldio(cmd->scmd)){ | |
1377 | ldio = (struct megasas_io_frame *)cmd->frame; | |
1378 | mfi_sgl = &ldio->sgl; | |
1379 | sgcount = ldio->sge_count; | |
1380 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount); | |
1381 | } | |
1382 | else { | |
1383 | pthru = (struct megasas_pthru_frame *) cmd->frame; | |
1384 | mfi_sgl = &pthru->sgl; | |
1385 | sgcount = pthru->sge_count; | |
1386 | printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount); | |
1387 | } | |
1388 | if(megasas_dbg_lvl & MEGASAS_DBG_LVL){ | |
1389 | for (n = 0; n < sgcount; n++){ | |
1390 | if (IS_DMA64) | |
1391 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ; | |
1392 | else | |
1393 | printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ; | |
1394 | } | |
1395 | } | |
1396 | printk(KERN_ERR "\n"); | |
1397 | } /*for max_cmd*/ | |
1398 | printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no); | |
1399 | for (i = 0; i < max_cmd; i++) { | |
1400 | ||
1401 | cmd = instance->cmd_list[i]; | |
1402 | ||
1403 | if(cmd->sync_cmd == 1){ | |
1404 | printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr); | |
1405 | } | |
1406 | } | |
1407 | printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no); | |
1408 | } | |
1409 | ||
cd50ba8e | 1410 | u32 |
1411 | megasas_build_and_issue_cmd(struct megasas_instance *instance, | |
1412 | struct scsi_cmnd *scmd) | |
1413 | { | |
1414 | struct megasas_cmd *cmd; | |
1415 | u32 frame_count; | |
1416 | ||
1417 | cmd = megasas_get_cmd(instance); | |
1418 | if (!cmd) | |
1419 | return SCSI_MLQUEUE_HOST_BUSY; | |
1420 | ||
1421 | /* | |
1422 | * Logical drive command | |
1423 | */ | |
1424 | if (megasas_is_ldio(scmd)) | |
1425 | frame_count = megasas_build_ldio(instance, scmd, cmd); | |
1426 | else | |
1427 | frame_count = megasas_build_dcdb(instance, scmd, cmd); | |
1428 | ||
1429 | if (!frame_count) | |
1430 | goto out_return_cmd; | |
1431 | ||
1432 | cmd->scmd = scmd; | |
1433 | scmd->SCp.ptr = (char *)cmd; | |
1434 | ||
1435 | /* | |
1436 | * Issue the command to the FW | |
1437 | */ | |
1438 | atomic_inc(&instance->fw_outstanding); | |
1439 | ||
1440 | instance->instancet->fire_cmd(instance, cmd->frame_phys_addr, | |
1441 | cmd->frame_count-1, instance->reg_set); | |
1442 | /* | |
1443 | * Check if we have pend cmds to be completed | |
1444 | */ | |
1445 | if (poll_mode_io && atomic_read(&instance->fw_outstanding)) | |
1446 | tasklet_schedule(&instance->isr_tasklet); | |
1447 | ||
1448 | return 0; | |
1449 | out_return_cmd: | |
1450 | megasas_return_cmd(instance, cmd); | |
1451 | return 1; | |
1452 | } | |
1453 | ||
1454 | ||
c4a3e0a5 BS |
1455 | /** |
1456 | * megasas_queue_command - Queue entry point | |
1457 | * @scmd: SCSI command to be queued | |
1458 | * @done: Callback entry point | |
1459 | */ | |
1460 | static int | |
f281233d | 1461 | megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *)) |
c4a3e0a5 | 1462 | { |
c4a3e0a5 | 1463 | struct megasas_instance *instance; |
39a98554 | 1464 | unsigned long flags; |
c4a3e0a5 BS |
1465 | |
1466 | instance = (struct megasas_instance *) | |
1467 | scmd->device->host->hostdata; | |
af37acfb | 1468 | |
39a98554 | 1469 | if (instance->issuepend_done == 0) |
af37acfb SP |
1470 | return SCSI_MLQUEUE_HOST_BUSY; |
1471 | ||
39a98554 | 1472 | spin_lock_irqsave(&instance->hba_lock, flags); |
1473 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1474 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1475 | return SCSI_MLQUEUE_HOST_BUSY; | |
1476 | } | |
1477 | ||
1478 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1479 | ||
c4a3e0a5 BS |
1480 | scmd->scsi_done = done; |
1481 | scmd->result = 0; | |
1482 | ||
cb59aa6a SP |
1483 | if (MEGASAS_IS_LOGICAL(scmd) && |
1484 | (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) { | |
1485 | scmd->result = DID_BAD_TARGET << 16; | |
1486 | goto out_done; | |
c4a3e0a5 BS |
1487 | } |
1488 | ||
02b01e01 SP |
1489 | switch (scmd->cmnd[0]) { |
1490 | case SYNCHRONIZE_CACHE: | |
1491 | /* | |
1492 | * FW takes care of flush cache on its own | |
1493 | * No need to send it down | |
1494 | */ | |
1495 | scmd->result = DID_OK << 16; | |
1496 | goto out_done; | |
1497 | default: | |
1498 | break; | |
1499 | } | |
1500 | ||
cd50ba8e | 1501 | if (instance->instancet->build_and_issue_cmd(instance, scmd)) { |
1502 | printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n"); | |
cb59aa6a | 1503 | return SCSI_MLQUEUE_HOST_BUSY; |
cd50ba8e | 1504 | } |
c4a3e0a5 BS |
1505 | |
1506 | return 0; | |
cb59aa6a | 1507 | |
cb59aa6a SP |
1508 | out_done: |
1509 | done(scmd); | |
1510 | return 0; | |
c4a3e0a5 BS |
1511 | } |
1512 | ||
f281233d JG |
1513 | static DEF_SCSI_QCMD(megasas_queue_command) |
1514 | ||
044833b5 YB |
1515 | static struct megasas_instance *megasas_lookup_instance(u16 host_no) |
1516 | { | |
1517 | int i; | |
1518 | ||
1519 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
1520 | ||
1521 | if ((megasas_mgmt_info.instance[i]) && | |
1522 | (megasas_mgmt_info.instance[i]->host->host_no == host_no)) | |
1523 | return megasas_mgmt_info.instance[i]; | |
1524 | } | |
1525 | ||
1526 | return NULL; | |
1527 | } | |
1528 | ||
147aab6a CH |
1529 | static int megasas_slave_configure(struct scsi_device *sdev) |
1530 | { | |
044833b5 YB |
1531 | u16 pd_index = 0; |
1532 | struct megasas_instance *instance ; | |
1533 | ||
1534 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1535 | ||
147aab6a | 1536 | /* |
044833b5 YB |
1537 | * Don't export physical disk devices to the disk driver. |
1538 | * | |
1539 | * FIXME: Currently we don't export them to the midlayer at all. | |
1540 | * That will be fixed once LSI engineers have audited the | |
1541 | * firmware for possible issues. | |
1542 | */ | |
1543 | if (sdev->channel < MEGASAS_MAX_PD_CHANNELS && | |
1544 | sdev->type == TYPE_DISK) { | |
1545 | pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1546 | sdev->id; | |
1547 | if (instance->pd_list[pd_index].driveState == | |
1548 | MR_PD_STATE_SYSTEM) { | |
1549 | blk_queue_rq_timeout(sdev->request_queue, | |
1550 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1551 | return 0; | |
1552 | } | |
147aab6a | 1553 | return -ENXIO; |
044833b5 | 1554 | } |
e5b3a65f CH |
1555 | |
1556 | /* | |
044833b5 YB |
1557 | * The RAID firmware may require extended timeouts. |
1558 | */ | |
1559 | blk_queue_rq_timeout(sdev->request_queue, | |
1560 | MEGASAS_DEFAULT_CMD_TIMEOUT * HZ); | |
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | static int megasas_slave_alloc(struct scsi_device *sdev) | |
1565 | { | |
1566 | u16 pd_index = 0; | |
1567 | struct megasas_instance *instance ; | |
1568 | instance = megasas_lookup_instance(sdev->host->host_no); | |
1569 | if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) && | |
1570 | (sdev->type == TYPE_DISK)) { | |
1571 | /* | |
1572 | * Open the OS scan to the SYSTEM PD | |
1573 | */ | |
1574 | pd_index = | |
1575 | (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + | |
1576 | sdev->id; | |
1577 | if ((instance->pd_list[pd_index].driveState == | |
1578 | MR_PD_STATE_SYSTEM) && | |
1579 | (instance->pd_list[pd_index].driveType == | |
1580 | TYPE_DISK)) { | |
1581 | return 0; | |
1582 | } | |
1583 | return -ENXIO; | |
1584 | } | |
147aab6a CH |
1585 | return 0; |
1586 | } | |
1587 | ||
9c915a8c | 1588 | void megaraid_sas_kill_hba(struct megasas_instance *instance) |
39a98554 | 1589 | { |
1590 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
9c915a8c | 1591 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
36807e67 | 1592 | (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || |
1593 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { | |
9c915a8c | 1594 | writel(MFI_STOP_ADP, &instance->reg_set->doorbell); |
39a98554 | 1595 | } else { |
9c915a8c | 1596 | writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell); |
1597 | } | |
1598 | } | |
1599 | ||
1600 | /** | |
1601 | * megasas_check_and_restore_queue_depth - Check if queue depth needs to be | |
1602 | * restored to max value | |
1603 | * @instance: Adapter soft state | |
1604 | * | |
1605 | */ | |
1606 | void | |
1607 | megasas_check_and_restore_queue_depth(struct megasas_instance *instance) | |
1608 | { | |
1609 | unsigned long flags; | |
1610 | if (instance->flag & MEGASAS_FW_BUSY | |
1611 | && time_after(jiffies, instance->last_time + 5 * HZ) | |
1612 | && atomic_read(&instance->fw_outstanding) < 17) { | |
1613 | ||
1614 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1615 | instance->flag &= ~MEGASAS_FW_BUSY; | |
1616 | if ((instance->pdev->device == | |
1617 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1618 | (instance->pdev->device == | |
1619 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1620 | instance->host->can_queue = | |
1621 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
1622 | } else | |
1623 | instance->host->can_queue = | |
1624 | instance->max_fw_cmds - MEGASAS_INT_CMDS; | |
1625 | ||
1626 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
39a98554 | 1627 | } |
1628 | } | |
1629 | ||
7343eb65 | 1630 | /** |
1631 | * megasas_complete_cmd_dpc - Returns FW's controller structure | |
1632 | * @instance_addr: Address of adapter soft state | |
1633 | * | |
1634 | * Tasklet to complete cmds | |
1635 | */ | |
1636 | static void megasas_complete_cmd_dpc(unsigned long instance_addr) | |
1637 | { | |
1638 | u32 producer; | |
1639 | u32 consumer; | |
1640 | u32 context; | |
1641 | struct megasas_cmd *cmd; | |
1642 | struct megasas_instance *instance = | |
1643 | (struct megasas_instance *)instance_addr; | |
1644 | unsigned long flags; | |
1645 | ||
1646 | /* If we have already declared adapter dead, donot complete cmds */ | |
39a98554 | 1647 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR ) |
7343eb65 | 1648 | return; |
1649 | ||
1650 | spin_lock_irqsave(&instance->completion_lock, flags); | |
1651 | ||
1652 | producer = *instance->producer; | |
1653 | consumer = *instance->consumer; | |
1654 | ||
1655 | while (consumer != producer) { | |
1656 | context = instance->reply_queue[consumer]; | |
39a98554 | 1657 | if (context >= instance->max_fw_cmds) { |
1658 | printk(KERN_ERR "Unexpected context value %x\n", | |
1659 | context); | |
1660 | BUG(); | |
1661 | } | |
7343eb65 | 1662 | |
1663 | cmd = instance->cmd_list[context]; | |
1664 | ||
1665 | megasas_complete_cmd(instance, cmd, DID_OK); | |
1666 | ||
1667 | consumer++; | |
1668 | if (consumer == (instance->max_fw_cmds + 1)) { | |
1669 | consumer = 0; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | *instance->consumer = producer; | |
1674 | ||
1675 | spin_unlock_irqrestore(&instance->completion_lock, flags); | |
1676 | ||
1677 | /* | |
1678 | * Check if we can restore can_queue | |
1679 | */ | |
9c915a8c | 1680 | megasas_check_and_restore_queue_depth(instance); |
7343eb65 | 1681 | } |
1682 | ||
707e09bd YB |
1683 | static void |
1684 | megasas_internal_reset_defer_cmds(struct megasas_instance *instance); | |
1685 | ||
1686 | static void | |
1687 | process_fw_state_change_wq(struct work_struct *work); | |
1688 | ||
1689 | void megasas_do_ocr(struct megasas_instance *instance) | |
1690 | { | |
1691 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || | |
1692 | (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || | |
1693 | (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) { | |
1694 | *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN; | |
1695 | } | |
1696 | instance->instancet->disable_intr(instance->reg_set); | |
1697 | instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; | |
1698 | instance->issuepend_done = 0; | |
1699 | ||
1700 | atomic_set(&instance->fw_outstanding, 0); | |
1701 | megasas_internal_reset_defer_cmds(instance); | |
1702 | process_fw_state_change_wq(&instance->work_init); | |
1703 | } | |
1704 | ||
c4a3e0a5 BS |
1705 | /** |
1706 | * megasas_wait_for_outstanding - Wait for all outstanding cmds | |
1707 | * @instance: Adapter soft state | |
1708 | * | |
25985edc | 1709 | * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to |
c4a3e0a5 BS |
1710 | * complete all its outstanding commands. Returns error if one or more IOs |
1711 | * are pending after this time period. It also marks the controller dead. | |
1712 | */ | |
1713 | static int megasas_wait_for_outstanding(struct megasas_instance *instance) | |
1714 | { | |
1715 | int i; | |
39a98554 | 1716 | u32 reset_index; |
c4a3e0a5 | 1717 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; |
39a98554 | 1718 | u8 adprecovery; |
1719 | unsigned long flags; | |
1720 | struct list_head clist_local; | |
1721 | struct megasas_cmd *reset_cmd; | |
707e09bd YB |
1722 | u32 fw_state; |
1723 | u8 kill_adapter_flag; | |
39a98554 | 1724 | |
1725 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1726 | adprecovery = instance->adprecovery; | |
1727 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1728 | ||
1729 | if (adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1730 | ||
1731 | INIT_LIST_HEAD(&clist_local); | |
1732 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1733 | list_splice_init(&instance->internal_reset_pending_q, | |
1734 | &clist_local); | |
1735 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1736 | ||
1737 | printk(KERN_NOTICE "megasas: HBA reset wait ...\n"); | |
1738 | for (i = 0; i < wait_time; i++) { | |
1739 | msleep(1000); | |
1740 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1741 | adprecovery = instance->adprecovery; | |
1742 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1743 | if (adprecovery == MEGASAS_HBA_OPERATIONAL) | |
1744 | break; | |
1745 | } | |
1746 | ||
1747 | if (adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
1748 | printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n"); | |
1749 | spin_lock_irqsave(&instance->hba_lock, flags); | |
1750 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
1751 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
1752 | return FAILED; | |
1753 | } | |
1754 | ||
1755 | reset_index = 0; | |
1756 | while (!list_empty(&clist_local)) { | |
1757 | reset_cmd = list_entry((&clist_local)->next, | |
1758 | struct megasas_cmd, list); | |
1759 | list_del_init(&reset_cmd->list); | |
1760 | if (reset_cmd->scmd) { | |
1761 | reset_cmd->scmd->result = DID_RESET << 16; | |
5cd049a5 | 1762 | printk(KERN_NOTICE "%d:%p reset [%02x]\n", |
39a98554 | 1763 | reset_index, reset_cmd, |
5cd049a5 | 1764 | reset_cmd->scmd->cmnd[0]); |
39a98554 | 1765 | |
1766 | reset_cmd->scmd->scsi_done(reset_cmd->scmd); | |
1767 | megasas_return_cmd(instance, reset_cmd); | |
1768 | } else if (reset_cmd->sync_cmd) { | |
1769 | printk(KERN_NOTICE "megasas:%p synch cmds" | |
1770 | "reset queue\n", | |
1771 | reset_cmd); | |
1772 | ||
1773 | reset_cmd->cmd_status = ENODATA; | |
1774 | instance->instancet->fire_cmd(instance, | |
1775 | reset_cmd->frame_phys_addr, | |
1776 | 0, instance->reg_set); | |
1777 | } else { | |
1778 | printk(KERN_NOTICE "megasas: %p unexpected" | |
1779 | "cmds lst\n", | |
1780 | reset_cmd); | |
1781 | } | |
1782 | reset_index++; | |
1783 | } | |
1784 | ||
1785 | return SUCCESS; | |
1786 | } | |
c4a3e0a5 BS |
1787 | |
1788 | for (i = 0; i < wait_time; i++) { | |
1789 | ||
e4a082c7 SP |
1790 | int outstanding = atomic_read(&instance->fw_outstanding); |
1791 | ||
1792 | if (!outstanding) | |
c4a3e0a5 BS |
1793 | break; |
1794 | ||
1795 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
1796 | printk(KERN_NOTICE "megasas: [%2d]waiting for %d " | |
e4a082c7 | 1797 | "commands to complete\n",i,outstanding); |
7343eb65 | 1798 | /* |
1799 | * Call cmd completion routine. Cmd to be | |
1800 | * be completed directly without depending on isr. | |
1801 | */ | |
1802 | megasas_complete_cmd_dpc((unsigned long)instance); | |
c4a3e0a5 BS |
1803 | } |
1804 | ||
1805 | msleep(1000); | |
1806 | } | |
1807 | ||
707e09bd YB |
1808 | i = 0; |
1809 | kill_adapter_flag = 0; | |
1810 | do { | |
1811 | fw_state = instance->instancet->read_fw_status_reg( | |
1812 | instance->reg_set) & MFI_STATE_MASK; | |
1813 | if ((fw_state == MFI_STATE_FAULT) && | |
1814 | (instance->disableOnlineCtrlReset == 0)) { | |
1815 | if (i == 3) { | |
1816 | kill_adapter_flag = 2; | |
1817 | break; | |
1818 | } | |
1819 | megasas_do_ocr(instance); | |
1820 | kill_adapter_flag = 1; | |
1821 | ||
1822 | /* wait for 1 secs to let FW finish the pending cmds */ | |
1823 | msleep(1000); | |
1824 | } | |
1825 | i++; | |
1826 | } while (i <= 3); | |
1827 | ||
1828 | if (atomic_read(&instance->fw_outstanding) && | |
1829 | !kill_adapter_flag) { | |
1830 | if (instance->disableOnlineCtrlReset == 0) { | |
1831 | ||
1832 | megasas_do_ocr(instance); | |
1833 | ||
1834 | /* wait for 5 secs to let FW finish the pending cmds */ | |
1835 | for (i = 0; i < wait_time; i++) { | |
1836 | int outstanding = | |
1837 | atomic_read(&instance->fw_outstanding); | |
1838 | if (!outstanding) | |
1839 | return SUCCESS; | |
1840 | msleep(1000); | |
1841 | } | |
1842 | } | |
1843 | } | |
1844 | ||
1845 | if (atomic_read(&instance->fw_outstanding) || | |
1846 | (kill_adapter_flag == 2)) { | |
39a98554 | 1847 | printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n"); |
e3bbff9f SP |
1848 | /* |
1849 | * Send signal to FW to stop processing any pending cmds. | |
1850 | * The controller will be taken offline by the OS now. | |
1851 | */ | |
0c79e681 YB |
1852 | if ((instance->pdev->device == |
1853 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
1854 | (instance->pdev->device == | |
1855 | PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
1856 | writel(MFI_STOP_ADP, | |
9c915a8c | 1857 | &instance->reg_set->doorbell); |
0c79e681 YB |
1858 | } else { |
1859 | writel(MFI_STOP_ADP, | |
e3bbff9f | 1860 | &instance->reg_set->inbound_doorbell); |
0c79e681 | 1861 | } |
658dcedb | 1862 | megasas_dump_pending_frames(instance); |
39a98554 | 1863 | spin_lock_irqsave(&instance->hba_lock, flags); |
1864 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
1865 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
c4a3e0a5 BS |
1866 | return FAILED; |
1867 | } | |
1868 | ||
39a98554 | 1869 | printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n"); |
1870 | ||
c4a3e0a5 BS |
1871 | return SUCCESS; |
1872 | } | |
1873 | ||
1874 | /** | |
1875 | * megasas_generic_reset - Generic reset routine | |
1876 | * @scmd: Mid-layer SCSI command | |
1877 | * | |
1878 | * This routine implements a generic reset handler for device, bus and host | |
1879 | * reset requests. Device, bus and host specific reset handlers can use this | |
1880 | * function after they do their specific tasks. | |
1881 | */ | |
1882 | static int megasas_generic_reset(struct scsi_cmnd *scmd) | |
1883 | { | |
1884 | int ret_val; | |
1885 | struct megasas_instance *instance; | |
1886 | ||
1887 | instance = (struct megasas_instance *)scmd->device->host->hostdata; | |
1888 | ||
5cd049a5 CH |
1889 | scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n", |
1890 | scmd->cmnd[0], scmd->retries); | |
c4a3e0a5 | 1891 | |
39a98554 | 1892 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
c4a3e0a5 BS |
1893 | printk(KERN_ERR "megasas: cannot recover from previous reset " |
1894 | "failures\n"); | |
1895 | return FAILED; | |
1896 | } | |
1897 | ||
c4a3e0a5 | 1898 | ret_val = megasas_wait_for_outstanding(instance); |
c4a3e0a5 BS |
1899 | if (ret_val == SUCCESS) |
1900 | printk(KERN_NOTICE "megasas: reset successful \n"); | |
1901 | else | |
1902 | printk(KERN_ERR "megasas: failed to do reset\n"); | |
1903 | ||
c4a3e0a5 BS |
1904 | return ret_val; |
1905 | } | |
1906 | ||
05e9ebbe SP |
1907 | /** |
1908 | * megasas_reset_timer - quiesce the adapter if required | |
1909 | * @scmd: scsi cmnd | |
1910 | * | |
1911 | * Sets the FW busy flag and reduces the host->can_queue if the | |
1912 | * cmd has not been completed within the timeout period. | |
1913 | */ | |
1914 | static enum | |
242f9dcb | 1915 | blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd) |
05e9ebbe | 1916 | { |
05e9ebbe SP |
1917 | struct megasas_instance *instance; |
1918 | unsigned long flags; | |
1919 | ||
1920 | if (time_after(jiffies, scmd->jiffies_at_alloc + | |
1921 | (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) { | |
242f9dcb | 1922 | return BLK_EH_NOT_HANDLED; |
05e9ebbe SP |
1923 | } |
1924 | ||
f575c5d3 | 1925 | instance = (struct megasas_instance *)scmd->device->host->hostdata; |
05e9ebbe SP |
1926 | if (!(instance->flag & MEGASAS_FW_BUSY)) { |
1927 | /* FW is busy, throttle IO */ | |
1928 | spin_lock_irqsave(instance->host->host_lock, flags); | |
1929 | ||
1930 | instance->host->can_queue = 16; | |
1931 | instance->last_time = jiffies; | |
1932 | instance->flag |= MEGASAS_FW_BUSY; | |
1933 | ||
1934 | spin_unlock_irqrestore(instance->host->host_lock, flags); | |
1935 | } | |
242f9dcb | 1936 | return BLK_EH_RESET_TIMER; |
05e9ebbe SP |
1937 | } |
1938 | ||
c4a3e0a5 BS |
1939 | /** |
1940 | * megasas_reset_device - Device reset handler entry point | |
1941 | */ | |
1942 | static int megasas_reset_device(struct scsi_cmnd *scmd) | |
1943 | { | |
1944 | int ret; | |
1945 | ||
1946 | /* | |
1947 | * First wait for all commands to complete | |
1948 | */ | |
1949 | ret = megasas_generic_reset(scmd); | |
1950 | ||
1951 | return ret; | |
1952 | } | |
1953 | ||
1954 | /** | |
1955 | * megasas_reset_bus_host - Bus & host reset handler entry point | |
1956 | */ | |
1957 | static int megasas_reset_bus_host(struct scsi_cmnd *scmd) | |
1958 | { | |
1959 | int ret; | |
9c915a8c | 1960 | struct megasas_instance *instance; |
1961 | instance = (struct megasas_instance *)scmd->device->host->hostdata; | |
c4a3e0a5 BS |
1962 | |
1963 | /* | |
80682fa9 | 1964 | * First wait for all commands to complete |
c4a3e0a5 | 1965 | */ |
36807e67 | 1966 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || |
1967 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) | |
9c915a8c | 1968 | ret = megasas_reset_fusion(scmd->device->host); |
1969 | else | |
1970 | ret = megasas_generic_reset(scmd); | |
c4a3e0a5 BS |
1971 | |
1972 | return ret; | |
1973 | } | |
1974 | ||
cf62a0a5 SP |
1975 | /** |
1976 | * megasas_bios_param - Returns disk geometry for a disk | |
1977 | * @sdev: device handle | |
1978 | * @bdev: block device | |
1979 | * @capacity: drive capacity | |
1980 | * @geom: geometry parameters | |
1981 | */ | |
1982 | static int | |
1983 | megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
1984 | sector_t capacity, int geom[]) | |
1985 | { | |
1986 | int heads; | |
1987 | int sectors; | |
1988 | sector_t cylinders; | |
1989 | unsigned long tmp; | |
1990 | /* Default heads (64) & sectors (32) */ | |
1991 | heads = 64; | |
1992 | sectors = 32; | |
1993 | ||
1994 | tmp = heads * sectors; | |
1995 | cylinders = capacity; | |
1996 | ||
1997 | sector_div(cylinders, tmp); | |
1998 | ||
1999 | /* | |
2000 | * Handle extended translation size for logical drives > 1Gb | |
2001 | */ | |
2002 | ||
2003 | if (capacity >= 0x200000) { | |
2004 | heads = 255; | |
2005 | sectors = 63; | |
2006 | tmp = heads*sectors; | |
2007 | cylinders = capacity; | |
2008 | sector_div(cylinders, tmp); | |
2009 | } | |
2010 | ||
2011 | geom[0] = heads; | |
2012 | geom[1] = sectors; | |
2013 | geom[2] = cylinders; | |
2014 | ||
2015 | return 0; | |
2016 | } | |
2017 | ||
7e8a75f4 YB |
2018 | static void megasas_aen_polling(struct work_struct *work); |
2019 | ||
c4a3e0a5 BS |
2020 | /** |
2021 | * megasas_service_aen - Processes an event notification | |
2022 | * @instance: Adapter soft state | |
2023 | * @cmd: AEN command completed by the ISR | |
2024 | * | |
2025 | * For AEN, driver sends a command down to FW that is held by the FW till an | |
2026 | * event occurs. When an event of interest occurs, FW completes the command | |
2027 | * that it was previously holding. | |
2028 | * | |
2029 | * This routines sends SIGIO signal to processes that have registered with the | |
2030 | * driver for AEN. | |
2031 | */ | |
2032 | static void | |
2033 | megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd) | |
2034 | { | |
c3518837 | 2035 | unsigned long flags; |
c4a3e0a5 BS |
2036 | /* |
2037 | * Don't signal app if it is just an aborted previously registered aen | |
2038 | */ | |
c3518837 YB |
2039 | if ((!cmd->abort_aen) && (instance->unload == 0)) { |
2040 | spin_lock_irqsave(&poll_aen_lock, flags); | |
2041 | megasas_poll_wait_aen = 1; | |
2042 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
2043 | wake_up(&megasas_poll_wait); | |
c4a3e0a5 | 2044 | kill_fasync(&megasas_async_queue, SIGIO, POLL_IN); |
c3518837 | 2045 | } |
c4a3e0a5 BS |
2046 | else |
2047 | cmd->abort_aen = 0; | |
2048 | ||
2049 | instance->aen_cmd = NULL; | |
2050 | megasas_return_cmd(instance, cmd); | |
7e8a75f4 | 2051 | |
39a98554 | 2052 | if ((instance->unload == 0) && |
2053 | ((instance->issuepend_done == 1))) { | |
7e8a75f4 YB |
2054 | struct megasas_aen_event *ev; |
2055 | ev = kzalloc(sizeof(*ev), GFP_ATOMIC); | |
2056 | if (!ev) { | |
2057 | printk(KERN_ERR "megasas_service_aen: out of memory\n"); | |
2058 | } else { | |
2059 | ev->instance = instance; | |
2060 | instance->ev = ev; | |
2061 | INIT_WORK(&ev->hotplug_work, megasas_aen_polling); | |
2062 | schedule_delayed_work( | |
2063 | (struct delayed_work *)&ev->hotplug_work, 0); | |
2064 | } | |
2065 | } | |
c4a3e0a5 BS |
2066 | } |
2067 | ||
4bcde509 | 2068 | static int megasas_change_queue_depth(struct scsi_device *sdev, |
2069 | int queue_depth, int reason) | |
2070 | { | |
2071 | if (reason != SCSI_QDEPTH_DEFAULT) | |
2072 | return -EOPNOTSUPP; | |
2073 | ||
2074 | if (queue_depth > sdev->host->can_queue) | |
2075 | queue_depth = sdev->host->can_queue; | |
2076 | scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), | |
2077 | queue_depth); | |
2078 | ||
2079 | return queue_depth; | |
2080 | } | |
2081 | ||
c4a3e0a5 BS |
2082 | /* |
2083 | * Scsi host template for megaraid_sas driver | |
2084 | */ | |
2085 | static struct scsi_host_template megasas_template = { | |
2086 | ||
2087 | .module = THIS_MODULE, | |
f28cd7cf | 2088 | .name = "LSI SAS based MegaRAID driver", |
c4a3e0a5 | 2089 | .proc_name = "megaraid_sas", |
147aab6a | 2090 | .slave_configure = megasas_slave_configure, |
044833b5 | 2091 | .slave_alloc = megasas_slave_alloc, |
c4a3e0a5 BS |
2092 | .queuecommand = megasas_queue_command, |
2093 | .eh_device_reset_handler = megasas_reset_device, | |
2094 | .eh_bus_reset_handler = megasas_reset_bus_host, | |
2095 | .eh_host_reset_handler = megasas_reset_bus_host, | |
05e9ebbe | 2096 | .eh_timed_out = megasas_reset_timer, |
cf62a0a5 | 2097 | .bios_param = megasas_bios_param, |
c4a3e0a5 | 2098 | .use_clustering = ENABLE_CLUSTERING, |
4bcde509 | 2099 | .change_queue_depth = megasas_change_queue_depth, |
c4a3e0a5 BS |
2100 | }; |
2101 | ||
2102 | /** | |
2103 | * megasas_complete_int_cmd - Completes an internal command | |
2104 | * @instance: Adapter soft state | |
2105 | * @cmd: Command to be completed | |
2106 | * | |
2107 | * The megasas_issue_blocked_cmd() function waits for a command to complete | |
2108 | * after it issues a command. This function wakes up that waiting routine by | |
2109 | * calling wake_up() on the wait queue. | |
2110 | */ | |
2111 | static void | |
2112 | megasas_complete_int_cmd(struct megasas_instance *instance, | |
2113 | struct megasas_cmd *cmd) | |
2114 | { | |
2115 | cmd->cmd_status = cmd->frame->io.cmd_status; | |
2116 | ||
2117 | if (cmd->cmd_status == ENODATA) { | |
2118 | cmd->cmd_status = 0; | |
2119 | } | |
2120 | wake_up(&instance->int_cmd_wait_q); | |
2121 | } | |
2122 | ||
2123 | /** | |
2124 | * megasas_complete_abort - Completes aborting a command | |
2125 | * @instance: Adapter soft state | |
2126 | * @cmd: Cmd that was issued to abort another cmd | |
2127 | * | |
0d49016b | 2128 | * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q |
2129 | * after it issues an abort on a previously issued command. This function | |
c4a3e0a5 BS |
2130 | * wakes up all functions waiting on the same wait queue. |
2131 | */ | |
2132 | static void | |
2133 | megasas_complete_abort(struct megasas_instance *instance, | |
2134 | struct megasas_cmd *cmd) | |
2135 | { | |
2136 | if (cmd->sync_cmd) { | |
2137 | cmd->sync_cmd = 0; | |
2138 | cmd->cmd_status = 0; | |
2139 | wake_up(&instance->abort_cmd_wait_q); | |
2140 | } | |
2141 | ||
2142 | return; | |
2143 | } | |
2144 | ||
c4a3e0a5 BS |
2145 | /** |
2146 | * megasas_complete_cmd - Completes a command | |
2147 | * @instance: Adapter soft state | |
2148 | * @cmd: Command to be completed | |
0d49016b | 2149 | * @alt_status: If non-zero, use this value as status to |
c4a3e0a5 BS |
2150 | * SCSI mid-layer instead of the value returned |
2151 | * by the FW. This should be used if caller wants | |
2152 | * an alternate status (as in the case of aborted | |
2153 | * commands) | |
2154 | */ | |
9c915a8c | 2155 | void |
c4a3e0a5 BS |
2156 | megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, |
2157 | u8 alt_status) | |
2158 | { | |
2159 | int exception = 0; | |
2160 | struct megasas_header *hdr = &cmd->frame->hdr; | |
c3518837 | 2161 | unsigned long flags; |
9c915a8c | 2162 | struct fusion_context *fusion = instance->ctrl_context; |
c4a3e0a5 | 2163 | |
39a98554 | 2164 | /* flag for the retry reset */ |
2165 | cmd->retry_for_fw_reset = 0; | |
2166 | ||
05e9ebbe SP |
2167 | if (cmd->scmd) |
2168 | cmd->scmd->SCp.ptr = NULL; | |
c4a3e0a5 BS |
2169 | |
2170 | switch (hdr->cmd) { | |
e5f93a36 | 2171 | case MFI_CMD_INVALID: |
2172 | /* Some older 1068 controller FW may keep a pended | |
2173 | MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel | |
2174 | when booting the kdump kernel. Ignore this command to | |
2175 | prevent a kernel panic on shutdown of the kdump kernel. */ | |
2176 | printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command " | |
2177 | "completed.\n"); | |
2178 | printk(KERN_WARNING "megaraid_sas: If you have a controller " | |
2179 | "other than PERC5, please upgrade your firmware.\n"); | |
2180 | break; | |
c4a3e0a5 BS |
2181 | case MFI_CMD_PD_SCSI_IO: |
2182 | case MFI_CMD_LD_SCSI_IO: | |
2183 | ||
2184 | /* | |
2185 | * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been | |
2186 | * issued either through an IO path or an IOCTL path. If it | |
2187 | * was via IOCTL, we will send it to internal completion. | |
2188 | */ | |
2189 | if (cmd->sync_cmd) { | |
2190 | cmd->sync_cmd = 0; | |
2191 | megasas_complete_int_cmd(instance, cmd); | |
2192 | break; | |
2193 | } | |
2194 | ||
c4a3e0a5 BS |
2195 | case MFI_CMD_LD_READ: |
2196 | case MFI_CMD_LD_WRITE: | |
2197 | ||
2198 | if (alt_status) { | |
2199 | cmd->scmd->result = alt_status << 16; | |
2200 | exception = 1; | |
2201 | } | |
2202 | ||
2203 | if (exception) { | |
2204 | ||
e4a082c7 | 2205 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 2206 | |
155d98f0 | 2207 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
2208 | cmd->scmd->scsi_done(cmd->scmd); |
2209 | megasas_return_cmd(instance, cmd); | |
2210 | ||
2211 | break; | |
2212 | } | |
2213 | ||
2214 | switch (hdr->cmd_status) { | |
2215 | ||
2216 | case MFI_STAT_OK: | |
2217 | cmd->scmd->result = DID_OK << 16; | |
2218 | break; | |
2219 | ||
2220 | case MFI_STAT_SCSI_IO_FAILED: | |
2221 | case MFI_STAT_LD_INIT_IN_PROGRESS: | |
2222 | cmd->scmd->result = | |
2223 | (DID_ERROR << 16) | hdr->scsi_status; | |
2224 | break; | |
2225 | ||
2226 | case MFI_STAT_SCSI_DONE_WITH_ERROR: | |
2227 | ||
2228 | cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status; | |
2229 | ||
2230 | if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) { | |
2231 | memset(cmd->scmd->sense_buffer, 0, | |
2232 | SCSI_SENSE_BUFFERSIZE); | |
2233 | memcpy(cmd->scmd->sense_buffer, cmd->sense, | |
2234 | hdr->sense_len); | |
2235 | ||
2236 | cmd->scmd->result |= DRIVER_SENSE << 24; | |
2237 | } | |
2238 | ||
2239 | break; | |
2240 | ||
2241 | case MFI_STAT_LD_OFFLINE: | |
2242 | case MFI_STAT_DEVICE_NOT_FOUND: | |
2243 | cmd->scmd->result = DID_BAD_TARGET << 16; | |
2244 | break; | |
2245 | ||
2246 | default: | |
2247 | printk(KERN_DEBUG "megasas: MFI FW status %#x\n", | |
2248 | hdr->cmd_status); | |
2249 | cmd->scmd->result = DID_ERROR << 16; | |
2250 | break; | |
2251 | } | |
2252 | ||
e4a082c7 | 2253 | atomic_dec(&instance->fw_outstanding); |
c4a3e0a5 | 2254 | |
155d98f0 | 2255 | scsi_dma_unmap(cmd->scmd); |
c4a3e0a5 BS |
2256 | cmd->scmd->scsi_done(cmd->scmd); |
2257 | megasas_return_cmd(instance, cmd); | |
2258 | ||
2259 | break; | |
2260 | ||
2261 | case MFI_CMD_SMP: | |
2262 | case MFI_CMD_STP: | |
2263 | case MFI_CMD_DCMD: | |
9c915a8c | 2264 | /* Check for LD map update */ |
2265 | if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) && | |
2266 | (cmd->frame->dcmd.mbox.b[1] == 1)) { | |
2267 | spin_lock_irqsave(instance->host->host_lock, flags); | |
2268 | if (cmd->frame->hdr.cmd_status != 0) { | |
2269 | if (cmd->frame->hdr.cmd_status != | |
2270 | MFI_STAT_NOT_FOUND) | |
2271 | printk(KERN_WARNING "megasas: map sync" | |
2272 | "failed, status = 0x%x.\n", | |
2273 | cmd->frame->hdr.cmd_status); | |
2274 | else { | |
2275 | megasas_return_cmd(instance, cmd); | |
2276 | spin_unlock_irqrestore( | |
2277 | instance->host->host_lock, | |
2278 | flags); | |
2279 | break; | |
2280 | } | |
2281 | } else | |
2282 | instance->map_id++; | |
2283 | megasas_return_cmd(instance, cmd); | |
2284 | if (MR_ValidateMapInfo( | |
2285 | fusion->ld_map[(instance->map_id & 1)], | |
2286 | fusion->load_balance_info)) | |
2287 | fusion->fast_path_io = 1; | |
2288 | else | |
2289 | fusion->fast_path_io = 0; | |
2290 | megasas_sync_map_info(instance); | |
2291 | spin_unlock_irqrestore(instance->host->host_lock, | |
2292 | flags); | |
2293 | break; | |
2294 | } | |
c3518837 YB |
2295 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO || |
2296 | cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) { | |
2297 | spin_lock_irqsave(&poll_aen_lock, flags); | |
2298 | megasas_poll_wait_aen = 0; | |
2299 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
2300 | } | |
c4a3e0a5 BS |
2301 | |
2302 | /* | |
2303 | * See if got an event notification | |
2304 | */ | |
2305 | if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT) | |
2306 | megasas_service_aen(instance, cmd); | |
2307 | else | |
2308 | megasas_complete_int_cmd(instance, cmd); | |
2309 | ||
2310 | break; | |
2311 | ||
2312 | case MFI_CMD_ABORT: | |
2313 | /* | |
2314 | * Cmd issued to abort another cmd returned | |
2315 | */ | |
2316 | megasas_complete_abort(instance, cmd); | |
2317 | break; | |
2318 | ||
2319 | default: | |
2320 | printk("megasas: Unknown command completed! [0x%X]\n", | |
2321 | hdr->cmd); | |
2322 | break; | |
2323 | } | |
2324 | } | |
2325 | ||
39a98554 | 2326 | /** |
2327 | * megasas_issue_pending_cmds_again - issue all pending cmds | |
2328 | * in FW again because of the fw reset | |
2329 | * @instance: Adapter soft state | |
2330 | */ | |
2331 | static inline void | |
2332 | megasas_issue_pending_cmds_again(struct megasas_instance *instance) | |
2333 | { | |
2334 | struct megasas_cmd *cmd; | |
2335 | struct list_head clist_local; | |
2336 | union megasas_evt_class_locale class_locale; | |
2337 | unsigned long flags; | |
2338 | u32 seq_num; | |
2339 | ||
2340 | INIT_LIST_HEAD(&clist_local); | |
2341 | spin_lock_irqsave(&instance->hba_lock, flags); | |
2342 | list_splice_init(&instance->internal_reset_pending_q, &clist_local); | |
2343 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2344 | ||
2345 | while (!list_empty(&clist_local)) { | |
2346 | cmd = list_entry((&clist_local)->next, | |
2347 | struct megasas_cmd, list); | |
2348 | list_del_init(&cmd->list); | |
2349 | ||
2350 | if (cmd->sync_cmd || cmd->scmd) { | |
2351 | printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d" | |
2352 | "detected to be pending while HBA reset.\n", | |
2353 | cmd, cmd->scmd, cmd->sync_cmd); | |
2354 | ||
2355 | cmd->retry_for_fw_reset++; | |
2356 | ||
2357 | if (cmd->retry_for_fw_reset == 3) { | |
2358 | printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d" | |
2359 | "was tried multiple times during reset." | |
2360 | "Shutting down the HBA\n", | |
2361 | cmd, cmd->scmd, cmd->sync_cmd); | |
2362 | megaraid_sas_kill_hba(instance); | |
2363 | ||
2364 | instance->adprecovery = | |
2365 | MEGASAS_HW_CRITICAL_ERROR; | |
2366 | return; | |
2367 | } | |
2368 | } | |
2369 | ||
2370 | if (cmd->sync_cmd == 1) { | |
2371 | if (cmd->scmd) { | |
2372 | printk(KERN_NOTICE "megaraid_sas: unexpected" | |
2373 | "cmd attached to internal command!\n"); | |
2374 | } | |
2375 | printk(KERN_NOTICE "megasas: %p synchronous cmd" | |
2376 | "on the internal reset queue," | |
2377 | "issue it again.\n", cmd); | |
2378 | cmd->cmd_status = ENODATA; | |
2379 | instance->instancet->fire_cmd(instance, | |
2380 | cmd->frame_phys_addr , | |
2381 | 0, instance->reg_set); | |
2382 | } else if (cmd->scmd) { | |
5cd049a5 | 2383 | printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]" |
39a98554 | 2384 | "detected on the internal queue, issue again.\n", |
5cd049a5 | 2385 | cmd, cmd->scmd->cmnd[0]); |
39a98554 | 2386 | |
2387 | atomic_inc(&instance->fw_outstanding); | |
2388 | instance->instancet->fire_cmd(instance, | |
2389 | cmd->frame_phys_addr, | |
2390 | cmd->frame_count-1, instance->reg_set); | |
2391 | } else { | |
2392 | printk(KERN_NOTICE "megasas: %p unexpected cmd on the" | |
2393 | "internal reset defer list while re-issue!!\n", | |
2394 | cmd); | |
2395 | } | |
2396 | } | |
2397 | ||
2398 | if (instance->aen_cmd) { | |
2399 | printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n"); | |
2400 | megasas_return_cmd(instance, instance->aen_cmd); | |
2401 | ||
2402 | instance->aen_cmd = NULL; | |
2403 | } | |
2404 | ||
2405 | /* | |
2406 | * Initiate AEN (Asynchronous Event Notification) | |
2407 | */ | |
2408 | seq_num = instance->last_seq_num; | |
2409 | class_locale.members.reserved = 0; | |
2410 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
2411 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
2412 | ||
2413 | megasas_register_aen(instance, seq_num, class_locale.word); | |
2414 | } | |
2415 | ||
2416 | /** | |
2417 | * Move the internal reset pending commands to a deferred queue. | |
2418 | * | |
2419 | * We move the commands pending at internal reset time to a | |
2420 | * pending queue. This queue would be flushed after successful | |
2421 | * completion of the internal reset sequence. if the internal reset | |
2422 | * did not complete in time, the kernel reset handler would flush | |
2423 | * these commands. | |
2424 | **/ | |
2425 | static void | |
2426 | megasas_internal_reset_defer_cmds(struct megasas_instance *instance) | |
2427 | { | |
2428 | struct megasas_cmd *cmd; | |
2429 | int i; | |
2430 | u32 max_cmd = instance->max_fw_cmds; | |
2431 | u32 defer_index; | |
2432 | unsigned long flags; | |
2433 | ||
2434 | defer_index = 0; | |
2435 | spin_lock_irqsave(&instance->cmd_pool_lock, flags); | |
2436 | for (i = 0; i < max_cmd; i++) { | |
2437 | cmd = instance->cmd_list[i]; | |
2438 | if (cmd->sync_cmd == 1 || cmd->scmd) { | |
2439 | printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p" | |
2440 | "on the defer queue as internal\n", | |
2441 | defer_index, cmd, cmd->sync_cmd, cmd->scmd); | |
2442 | ||
2443 | if (!list_empty(&cmd->list)) { | |
2444 | printk(KERN_NOTICE "megaraid_sas: ERROR while" | |
2445 | " moving this cmd:%p, %d %p, it was" | |
2446 | "discovered on some list?\n", | |
2447 | cmd, cmd->sync_cmd, cmd->scmd); | |
2448 | ||
2449 | list_del_init(&cmd->list); | |
2450 | } | |
2451 | defer_index++; | |
2452 | list_add_tail(&cmd->list, | |
2453 | &instance->internal_reset_pending_q); | |
2454 | } | |
2455 | } | |
2456 | spin_unlock_irqrestore(&instance->cmd_pool_lock, flags); | |
2457 | } | |
2458 | ||
2459 | ||
2460 | static void | |
2461 | process_fw_state_change_wq(struct work_struct *work) | |
2462 | { | |
2463 | struct megasas_instance *instance = | |
2464 | container_of(work, struct megasas_instance, work_init); | |
2465 | u32 wait; | |
2466 | unsigned long flags; | |
2467 | ||
2468 | if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) { | |
2469 | printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n", | |
2470 | instance->adprecovery); | |
2471 | return ; | |
2472 | } | |
2473 | ||
2474 | if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) { | |
2475 | printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault" | |
2476 | "state, restarting it...\n"); | |
2477 | ||
2478 | instance->instancet->disable_intr(instance->reg_set); | |
2479 | atomic_set(&instance->fw_outstanding, 0); | |
2480 | ||
2481 | atomic_set(&instance->fw_reset_no_pci_access, 1); | |
2482 | instance->instancet->adp_reset(instance, instance->reg_set); | |
2483 | atomic_set(&instance->fw_reset_no_pci_access, 0 ); | |
2484 | ||
2485 | printk(KERN_NOTICE "megaraid_sas: FW restarted successfully," | |
2486 | "initiating next stage...\n"); | |
2487 | ||
2488 | printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine," | |
2489 | "state 2 starting...\n"); | |
2490 | ||
2491 | /*waitting for about 20 second before start the second init*/ | |
2492 | for (wait = 0; wait < 30; wait++) { | |
2493 | msleep(1000); | |
2494 | } | |
2495 | ||
058a8fac | 2496 | if (megasas_transition_to_ready(instance, 1)) { |
39a98554 | 2497 | printk(KERN_NOTICE "megaraid_sas:adapter not ready\n"); |
2498 | ||
2499 | megaraid_sas_kill_hba(instance); | |
2500 | instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR; | |
2501 | return ; | |
2502 | } | |
2503 | ||
2504 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) || | |
2505 | (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) || | |
2506 | (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR) | |
2507 | ) { | |
2508 | *instance->consumer = *instance->producer; | |
2509 | } else { | |
2510 | *instance->consumer = 0; | |
2511 | *instance->producer = 0; | |
2512 | } | |
2513 | ||
2514 | megasas_issue_init_mfi(instance); | |
2515 | ||
2516 | spin_lock_irqsave(&instance->hba_lock, flags); | |
2517 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; | |
2518 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2519 | instance->instancet->enable_intr(instance->reg_set); | |
2520 | ||
2521 | megasas_issue_pending_cmds_again(instance); | |
2522 | instance->issuepend_done = 1; | |
2523 | } | |
2524 | return ; | |
2525 | } | |
2526 | ||
c4a3e0a5 BS |
2527 | /** |
2528 | * megasas_deplete_reply_queue - Processes all completed commands | |
2529 | * @instance: Adapter soft state | |
2530 | * @alt_status: Alternate status to be returned to | |
2531 | * SCSI mid-layer instead of the status | |
2532 | * returned by the FW | |
39a98554 | 2533 | * Note: this must be called with hba lock held |
c4a3e0a5 | 2534 | */ |
858119e1 | 2535 | static int |
39a98554 | 2536 | megasas_deplete_reply_queue(struct megasas_instance *instance, |
2537 | u8 alt_status) | |
c4a3e0a5 | 2538 | { |
39a98554 | 2539 | u32 mfiStatus; |
2540 | u32 fw_state; | |
2541 | ||
2542 | if ((mfiStatus = instance->instancet->check_reset(instance, | |
2543 | instance->reg_set)) == 1) { | |
2544 | return IRQ_HANDLED; | |
2545 | } | |
2546 | ||
2547 | if ((mfiStatus = instance->instancet->clear_intr( | |
2548 | instance->reg_set) | |
2549 | ) == 0) { | |
e1419191 | 2550 | /* Hardware may not set outbound_intr_status in MSI-X mode */ |
c8e858fe | 2551 | if (!instance->msix_vectors) |
e1419191 | 2552 | return IRQ_NONE; |
39a98554 | 2553 | } |
2554 | ||
2555 | instance->mfiStatus = mfiStatus; | |
2556 | ||
2557 | if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) { | |
2558 | fw_state = instance->instancet->read_fw_status_reg( | |
2559 | instance->reg_set) & MFI_STATE_MASK; | |
2560 | ||
2561 | if (fw_state != MFI_STATE_FAULT) { | |
2562 | printk(KERN_NOTICE "megaraid_sas: fw state:%x\n", | |
2563 | fw_state); | |
2564 | } | |
2565 | ||
2566 | if ((fw_state == MFI_STATE_FAULT) && | |
2567 | (instance->disableOnlineCtrlReset == 0)) { | |
2568 | printk(KERN_NOTICE "megaraid_sas: wait adp restart\n"); | |
2569 | ||
2570 | if ((instance->pdev->device == | |
2571 | PCI_DEVICE_ID_LSI_SAS1064R) || | |
2572 | (instance->pdev->device == | |
2573 | PCI_DEVICE_ID_DELL_PERC5) || | |
2574 | (instance->pdev->device == | |
2575 | PCI_DEVICE_ID_LSI_VERDE_ZCR)) { | |
2576 | ||
2577 | *instance->consumer = | |
2578 | MEGASAS_ADPRESET_INPROG_SIGN; | |
2579 | } | |
2580 | ||
2581 | ||
2582 | instance->instancet->disable_intr(instance->reg_set); | |
2583 | instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT; | |
2584 | instance->issuepend_done = 0; | |
2585 | ||
2586 | atomic_set(&instance->fw_outstanding, 0); | |
2587 | megasas_internal_reset_defer_cmds(instance); | |
2588 | ||
2589 | printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n", | |
2590 | fw_state, instance->adprecovery); | |
2591 | ||
2592 | schedule_work(&instance->work_init); | |
2593 | return IRQ_HANDLED; | |
2594 | ||
2595 | } else { | |
2596 | printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n", | |
2597 | fw_state, instance->disableOnlineCtrlReset); | |
2598 | } | |
2599 | } | |
c4a3e0a5 | 2600 | |
5d018ad0 | 2601 | tasklet_schedule(&instance->isr_tasklet); |
c4a3e0a5 BS |
2602 | return IRQ_HANDLED; |
2603 | } | |
c4a3e0a5 BS |
2604 | /** |
2605 | * megasas_isr - isr entry point | |
2606 | */ | |
7d12e780 | 2607 | static irqreturn_t megasas_isr(int irq, void *devp) |
c4a3e0a5 | 2608 | { |
c8e858fe | 2609 | struct megasas_irq_context *irq_context = devp; |
2610 | struct megasas_instance *instance = irq_context->instance; | |
39a98554 | 2611 | unsigned long flags; |
2612 | irqreturn_t rc; | |
2613 | ||
c8e858fe | 2614 | if (atomic_read(&instance->fw_reset_no_pci_access)) |
39a98554 | 2615 | return IRQ_HANDLED; |
2616 | ||
39a98554 | 2617 | spin_lock_irqsave(&instance->hba_lock, flags); |
2618 | rc = megasas_deplete_reply_queue(instance, DID_OK); | |
2619 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
2620 | ||
2621 | return rc; | |
c4a3e0a5 BS |
2622 | } |
2623 | ||
2624 | /** | |
2625 | * megasas_transition_to_ready - Move the FW to READY state | |
1341c939 | 2626 | * @instance: Adapter soft state |
c4a3e0a5 BS |
2627 | * |
2628 | * During the initialization, FW passes can potentially be in any one of | |
2629 | * several possible states. If the FW in operational, waiting-for-handshake | |
2630 | * states, driver must take steps to bring it to ready state. Otherwise, it | |
2631 | * has to wait for the ready state. | |
2632 | */ | |
9c915a8c | 2633 | int |
058a8fac | 2634 | megasas_transition_to_ready(struct megasas_instance *instance, int ocr) |
c4a3e0a5 BS |
2635 | { |
2636 | int i; | |
2637 | u8 max_wait; | |
2638 | u32 fw_state; | |
2639 | u32 cur_state; | |
7218df69 | 2640 | u32 abs_state, curr_abs_state; |
c4a3e0a5 | 2641 | |
1341c939 | 2642 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; |
c4a3e0a5 | 2643 | |
e3bbff9f | 2644 | if (fw_state != MFI_STATE_READY) |
0d49016b | 2645 | printk(KERN_INFO "megasas: Waiting for FW to come to ready" |
2646 | " state\n"); | |
e3bbff9f | 2647 | |
c4a3e0a5 BS |
2648 | while (fw_state != MFI_STATE_READY) { |
2649 | ||
7218df69 YB |
2650 | abs_state = |
2651 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
2652 | ||
c4a3e0a5 BS |
2653 | switch (fw_state) { |
2654 | ||
2655 | case MFI_STATE_FAULT: | |
c4a3e0a5 | 2656 | printk(KERN_DEBUG "megasas: FW in FAULT state!!\n"); |
058a8fac | 2657 | if (ocr) { |
2658 | max_wait = MEGASAS_RESET_WAIT_TIME; | |
2659 | cur_state = MFI_STATE_FAULT; | |
2660 | break; | |
2661 | } else | |
2662 | return -ENODEV; | |
c4a3e0a5 BS |
2663 | |
2664 | case MFI_STATE_WAIT_HANDSHAKE: | |
2665 | /* | |
2666 | * Set the CLR bit in inbound doorbell | |
2667 | */ | |
0c79e681 | 2668 | if ((instance->pdev->device == |
87911122 YB |
2669 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
2670 | (instance->pdev->device == | |
9c915a8c | 2671 | PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
2672 | (instance->pdev->device == | |
36807e67 | 2673 | PCI_DEVICE_ID_LSI_FUSION) || |
2674 | (instance->pdev->device == | |
2675 | PCI_DEVICE_ID_LSI_INVADER)) { | |
87911122 YB |
2676 | writel( |
2677 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
9c915a8c | 2678 | &instance->reg_set->doorbell); |
87911122 YB |
2679 | } else { |
2680 | writel( | |
2681 | MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG, | |
2682 | &instance->reg_set->inbound_doorbell); | |
2683 | } | |
c4a3e0a5 | 2684 | |
7218df69 | 2685 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2686 | cur_state = MFI_STATE_WAIT_HANDSHAKE; |
2687 | break; | |
2688 | ||
e3bbff9f | 2689 | case MFI_STATE_BOOT_MESSAGE_PENDING: |
87911122 | 2690 | if ((instance->pdev->device == |
9c915a8c | 2691 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
2692 | (instance->pdev->device == | |
2693 | PCI_DEVICE_ID_LSI_SAS0071SKINNY) || | |
2694 | (instance->pdev->device == | |
36807e67 | 2695 | PCI_DEVICE_ID_LSI_FUSION) || |
2696 | (instance->pdev->device == | |
2697 | PCI_DEVICE_ID_LSI_INVADER)) { | |
87911122 | 2698 | writel(MFI_INIT_HOTPLUG, |
9c915a8c | 2699 | &instance->reg_set->doorbell); |
87911122 YB |
2700 | } else |
2701 | writel(MFI_INIT_HOTPLUG, | |
2702 | &instance->reg_set->inbound_doorbell); | |
e3bbff9f | 2703 | |
7218df69 | 2704 | max_wait = MEGASAS_RESET_WAIT_TIME; |
e3bbff9f SP |
2705 | cur_state = MFI_STATE_BOOT_MESSAGE_PENDING; |
2706 | break; | |
2707 | ||
c4a3e0a5 BS |
2708 | case MFI_STATE_OPERATIONAL: |
2709 | /* | |
e3bbff9f | 2710 | * Bring it to READY state; assuming max wait 10 secs |
c4a3e0a5 | 2711 | */ |
b274cab7 | 2712 | instance->instancet->disable_intr(instance->reg_set); |
87911122 YB |
2713 | if ((instance->pdev->device == |
2714 | PCI_DEVICE_ID_LSI_SAS0073SKINNY) || | |
2715 | (instance->pdev->device == | |
9c915a8c | 2716 | PCI_DEVICE_ID_LSI_SAS0071SKINNY) || |
2717 | (instance->pdev->device | |
36807e67 | 2718 | == PCI_DEVICE_ID_LSI_FUSION) || |
2719 | (instance->pdev->device | |
2720 | == PCI_DEVICE_ID_LSI_INVADER)) { | |
87911122 | 2721 | writel(MFI_RESET_FLAGS, |
9c915a8c | 2722 | &instance->reg_set->doorbell); |
36807e67 | 2723 | if ((instance->pdev->device == |
2724 | PCI_DEVICE_ID_LSI_FUSION) || | |
2725 | (instance->pdev->device == | |
2726 | PCI_DEVICE_ID_LSI_INVADER)) { | |
9c915a8c | 2727 | for (i = 0; i < (10 * 1000); i += 20) { |
2728 | if (readl( | |
2729 | &instance-> | |
2730 | reg_set-> | |
2731 | doorbell) & 1) | |
2732 | msleep(20); | |
2733 | else | |
2734 | break; | |
2735 | } | |
2736 | } | |
87911122 YB |
2737 | } else |
2738 | writel(MFI_RESET_FLAGS, | |
2739 | &instance->reg_set->inbound_doorbell); | |
c4a3e0a5 | 2740 | |
7218df69 | 2741 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2742 | cur_state = MFI_STATE_OPERATIONAL; |
2743 | break; | |
2744 | ||
2745 | case MFI_STATE_UNDEFINED: | |
2746 | /* | |
2747 | * This state should not last for more than 2 seconds | |
2748 | */ | |
7218df69 | 2749 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2750 | cur_state = MFI_STATE_UNDEFINED; |
2751 | break; | |
2752 | ||
2753 | case MFI_STATE_BB_INIT: | |
7218df69 | 2754 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2755 | cur_state = MFI_STATE_BB_INIT; |
2756 | break; | |
2757 | ||
2758 | case MFI_STATE_FW_INIT: | |
7218df69 | 2759 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2760 | cur_state = MFI_STATE_FW_INIT; |
2761 | break; | |
2762 | ||
2763 | case MFI_STATE_FW_INIT_2: | |
7218df69 | 2764 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2765 | cur_state = MFI_STATE_FW_INIT_2; |
2766 | break; | |
2767 | ||
2768 | case MFI_STATE_DEVICE_SCAN: | |
7218df69 | 2769 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2770 | cur_state = MFI_STATE_DEVICE_SCAN; |
2771 | break; | |
2772 | ||
2773 | case MFI_STATE_FLUSH_CACHE: | |
7218df69 | 2774 | max_wait = MEGASAS_RESET_WAIT_TIME; |
c4a3e0a5 BS |
2775 | cur_state = MFI_STATE_FLUSH_CACHE; |
2776 | break; | |
2777 | ||
2778 | default: | |
2779 | printk(KERN_DEBUG "megasas: Unknown state 0x%x\n", | |
2780 | fw_state); | |
2781 | return -ENODEV; | |
2782 | } | |
2783 | ||
2784 | /* | |
2785 | * The cur_state should not last for more than max_wait secs | |
2786 | */ | |
2787 | for (i = 0; i < (max_wait * 1000); i++) { | |
0d49016b | 2788 | fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & |
1341c939 | 2789 | MFI_STATE_MASK ; |
7218df69 YB |
2790 | curr_abs_state = |
2791 | instance->instancet->read_fw_status_reg(instance->reg_set); | |
c4a3e0a5 | 2792 | |
7218df69 | 2793 | if (abs_state == curr_abs_state) { |
c4a3e0a5 BS |
2794 | msleep(1); |
2795 | } else | |
2796 | break; | |
2797 | } | |
2798 | ||
2799 | /* | |
2800 | * Return error if fw_state hasn't changed after max_wait | |
2801 | */ | |
7218df69 | 2802 | if (curr_abs_state == abs_state) { |
c4a3e0a5 BS |
2803 | printk(KERN_DEBUG "FW state [%d] hasn't changed " |
2804 | "in %d secs\n", fw_state, max_wait); | |
2805 | return -ENODEV; | |
2806 | } | |
39a98554 | 2807 | } |
0d49016b | 2808 | printk(KERN_INFO "megasas: FW now in Ready state\n"); |
c4a3e0a5 BS |
2809 | |
2810 | return 0; | |
2811 | } | |
2812 | ||
2813 | /** | |
2814 | * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool | |
2815 | * @instance: Adapter soft state | |
2816 | */ | |
2817 | static void megasas_teardown_frame_pool(struct megasas_instance *instance) | |
2818 | { | |
2819 | int i; | |
9c915a8c | 2820 | u32 max_cmd = instance->max_mfi_cmds; |
c4a3e0a5 BS |
2821 | struct megasas_cmd *cmd; |
2822 | ||
2823 | if (!instance->frame_dma_pool) | |
2824 | return; | |
2825 | ||
2826 | /* | |
2827 | * Return all frames to pool | |
2828 | */ | |
2829 | for (i = 0; i < max_cmd; i++) { | |
2830 | ||
2831 | cmd = instance->cmd_list[i]; | |
2832 | ||
2833 | if (cmd->frame) | |
2834 | pci_pool_free(instance->frame_dma_pool, cmd->frame, | |
2835 | cmd->frame_phys_addr); | |
2836 | ||
2837 | if (cmd->sense) | |
e3bbff9f | 2838 | pci_pool_free(instance->sense_dma_pool, cmd->sense, |
c4a3e0a5 BS |
2839 | cmd->sense_phys_addr); |
2840 | } | |
2841 | ||
2842 | /* | |
2843 | * Now destroy the pool itself | |
2844 | */ | |
2845 | pci_pool_destroy(instance->frame_dma_pool); | |
2846 | pci_pool_destroy(instance->sense_dma_pool); | |
2847 | ||
2848 | instance->frame_dma_pool = NULL; | |
2849 | instance->sense_dma_pool = NULL; | |
2850 | } | |
2851 | ||
2852 | /** | |
2853 | * megasas_create_frame_pool - Creates DMA pool for cmd frames | |
2854 | * @instance: Adapter soft state | |
2855 | * | |
2856 | * Each command packet has an embedded DMA memory buffer that is used for | |
2857 | * filling MFI frame and the SG list that immediately follows the frame. This | |
2858 | * function creates those DMA memory buffers for each command packet by using | |
2859 | * PCI pool facility. | |
2860 | */ | |
2861 | static int megasas_create_frame_pool(struct megasas_instance *instance) | |
2862 | { | |
2863 | int i; | |
2864 | u32 max_cmd; | |
2865 | u32 sge_sz; | |
2866 | u32 sgl_sz; | |
2867 | u32 total_sz; | |
2868 | u32 frame_count; | |
2869 | struct megasas_cmd *cmd; | |
2870 | ||
9c915a8c | 2871 | max_cmd = instance->max_mfi_cmds; |
c4a3e0a5 BS |
2872 | |
2873 | /* | |
2874 | * Size of our frame is 64 bytes for MFI frame, followed by max SG | |
2875 | * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer | |
2876 | */ | |
2877 | sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) : | |
2878 | sizeof(struct megasas_sge32); | |
2879 | ||
f4c9a131 YB |
2880 | if (instance->flag_ieee) { |
2881 | sge_sz = sizeof(struct megasas_sge_skinny); | |
2882 | } | |
2883 | ||
c4a3e0a5 BS |
2884 | /* |
2885 | * Calculated the number of 64byte frames required for SGL | |
2886 | */ | |
2887 | sgl_sz = sge_sz * instance->max_num_sge; | |
2888 | frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE; | |
39a98554 | 2889 | frame_count = 15; |
c4a3e0a5 BS |
2890 | |
2891 | /* | |
2892 | * We need one extra frame for the MFI command | |
2893 | */ | |
2894 | frame_count++; | |
2895 | ||
2896 | total_sz = MEGAMFI_FRAME_SIZE * frame_count; | |
2897 | /* | |
2898 | * Use DMA pool facility provided by PCI layer | |
2899 | */ | |
2900 | instance->frame_dma_pool = pci_pool_create("megasas frame pool", | |
2901 | instance->pdev, total_sz, 64, | |
2902 | 0); | |
2903 | ||
2904 | if (!instance->frame_dma_pool) { | |
2905 | printk(KERN_DEBUG "megasas: failed to setup frame pool\n"); | |
2906 | return -ENOMEM; | |
2907 | } | |
2908 | ||
2909 | instance->sense_dma_pool = pci_pool_create("megasas sense pool", | |
2910 | instance->pdev, 128, 4, 0); | |
2911 | ||
2912 | if (!instance->sense_dma_pool) { | |
2913 | printk(KERN_DEBUG "megasas: failed to setup sense pool\n"); | |
2914 | ||
2915 | pci_pool_destroy(instance->frame_dma_pool); | |
2916 | instance->frame_dma_pool = NULL; | |
2917 | ||
2918 | return -ENOMEM; | |
2919 | } | |
2920 | ||
2921 | /* | |
2922 | * Allocate and attach a frame to each of the commands in cmd_list. | |
2923 | * By making cmd->index as the context instead of the &cmd, we can | |
2924 | * always use 32bit context regardless of the architecture | |
2925 | */ | |
2926 | for (i = 0; i < max_cmd; i++) { | |
2927 | ||
2928 | cmd = instance->cmd_list[i]; | |
2929 | ||
2930 | cmd->frame = pci_pool_alloc(instance->frame_dma_pool, | |
2931 | GFP_KERNEL, &cmd->frame_phys_addr); | |
2932 | ||
2933 | cmd->sense = pci_pool_alloc(instance->sense_dma_pool, | |
2934 | GFP_KERNEL, &cmd->sense_phys_addr); | |
2935 | ||
2936 | /* | |
2937 | * megasas_teardown_frame_pool() takes care of freeing | |
2938 | * whatever has been allocated | |
2939 | */ | |
2940 | if (!cmd->frame || !cmd->sense) { | |
2941 | printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n"); | |
2942 | megasas_teardown_frame_pool(instance); | |
2943 | return -ENOMEM; | |
2944 | } | |
2945 | ||
707e09bd | 2946 | memset(cmd->frame, 0, total_sz); |
c4a3e0a5 | 2947 | cmd->frame->io.context = cmd->index; |
7e8a75f4 | 2948 | cmd->frame->io.pad_0 = 0; |
e5f93a36 | 2949 | if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) && |
2950 | (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) && | |
2951 | (reset_devices)) | |
2952 | cmd->frame->hdr.cmd = MFI_CMD_INVALID; | |
c4a3e0a5 BS |
2953 | } |
2954 | ||
2955 | return 0; | |
2956 | } | |
2957 | ||
2958 | /** | |
2959 | * megasas_free_cmds - Free all the cmds in the free cmd pool | |
2960 | * @instance: Adapter soft state | |
2961 | */ | |
9c915a8c | 2962 | void megasas_free_cmds(struct megasas_instance *instance) |
c4a3e0a5 BS |
2963 | { |
2964 | int i; | |
2965 | /* First free the MFI frame pool */ | |
2966 | megasas_teardown_frame_pool(instance); | |
2967 | ||
2968 | /* Free all the commands in the cmd_list */ | |
9c915a8c | 2969 | for (i = 0; i < instance->max_mfi_cmds; i++) |
2970 | ||
c4a3e0a5 BS |
2971 | kfree(instance->cmd_list[i]); |
2972 | ||
2973 | /* Free the cmd_list buffer itself */ | |
2974 | kfree(instance->cmd_list); | |
2975 | instance->cmd_list = NULL; | |
2976 | ||
2977 | INIT_LIST_HEAD(&instance->cmd_pool); | |
2978 | } | |
2979 | ||
2980 | /** | |
2981 | * megasas_alloc_cmds - Allocates the command packets | |
2982 | * @instance: Adapter soft state | |
2983 | * | |
2984 | * Each command that is issued to the FW, whether IO commands from the OS or | |
2985 | * internal commands like IOCTLs, are wrapped in local data structure called | |
2986 | * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to | |
2987 | * the FW. | |
2988 | * | |
2989 | * Each frame has a 32-bit field called context (tag). This context is used | |
2990 | * to get back the megasas_cmd from the frame when a frame gets completed in | |
2991 | * the ISR. Typically the address of the megasas_cmd itself would be used as | |
2992 | * the context. But we wanted to keep the differences between 32 and 64 bit | |
2993 | * systems to the mininum. We always use 32 bit integers for the context. In | |
2994 | * this driver, the 32 bit values are the indices into an array cmd_list. | |
2995 | * This array is used only to look up the megasas_cmd given the context. The | |
2996 | * free commands themselves are maintained in a linked list called cmd_pool. | |
2997 | */ | |
9c915a8c | 2998 | int megasas_alloc_cmds(struct megasas_instance *instance) |
c4a3e0a5 BS |
2999 | { |
3000 | int i; | |
3001 | int j; | |
3002 | u32 max_cmd; | |
3003 | struct megasas_cmd *cmd; | |
3004 | ||
9c915a8c | 3005 | max_cmd = instance->max_mfi_cmds; |
c4a3e0a5 BS |
3006 | |
3007 | /* | |
3008 | * instance->cmd_list is an array of struct megasas_cmd pointers. | |
3009 | * Allocate the dynamic array first and then allocate individual | |
3010 | * commands. | |
3011 | */ | |
dd00cc48 | 3012 | instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL); |
c4a3e0a5 BS |
3013 | |
3014 | if (!instance->cmd_list) { | |
3015 | printk(KERN_DEBUG "megasas: out of memory\n"); | |
3016 | return -ENOMEM; | |
3017 | } | |
3018 | ||
9c915a8c | 3019 | memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd); |
c4a3e0a5 BS |
3020 | |
3021 | for (i = 0; i < max_cmd; i++) { | |
3022 | instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd), | |
3023 | GFP_KERNEL); | |
3024 | ||
3025 | if (!instance->cmd_list[i]) { | |
3026 | ||
3027 | for (j = 0; j < i; j++) | |
3028 | kfree(instance->cmd_list[j]); | |
3029 | ||
3030 | kfree(instance->cmd_list); | |
3031 | instance->cmd_list = NULL; | |
3032 | ||
3033 | return -ENOMEM; | |
3034 | } | |
3035 | } | |
3036 | ||
3037 | /* | |
3038 | * Add all the commands to command pool (instance->cmd_pool) | |
3039 | */ | |
3040 | for (i = 0; i < max_cmd; i++) { | |
3041 | cmd = instance->cmd_list[i]; | |
3042 | memset(cmd, 0, sizeof(struct megasas_cmd)); | |
3043 | cmd->index = i; | |
39a98554 | 3044 | cmd->scmd = NULL; |
c4a3e0a5 BS |
3045 | cmd->instance = instance; |
3046 | ||
3047 | list_add_tail(&cmd->list, &instance->cmd_pool); | |
3048 | } | |
3049 | ||
3050 | /* | |
3051 | * Create a frame pool and assign one frame to each cmd | |
3052 | */ | |
3053 | if (megasas_create_frame_pool(instance)) { | |
3054 | printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n"); | |
3055 | megasas_free_cmds(instance); | |
3056 | } | |
3057 | ||
3058 | return 0; | |
3059 | } | |
3060 | ||
81e403ce YB |
3061 | /* |
3062 | * megasas_get_pd_list_info - Returns FW's pd_list structure | |
3063 | * @instance: Adapter soft state | |
3064 | * @pd_list: pd_list structure | |
3065 | * | |
3066 | * Issues an internal command (DCMD) to get the FW's controller PD | |
3067 | * list structure. This information is mainly used to find out SYSTEM | |
3068 | * supported by the FW. | |
3069 | */ | |
3070 | static int | |
3071 | megasas_get_pd_list(struct megasas_instance *instance) | |
3072 | { | |
3073 | int ret = 0, pd_index = 0; | |
3074 | struct megasas_cmd *cmd; | |
3075 | struct megasas_dcmd_frame *dcmd; | |
3076 | struct MR_PD_LIST *ci; | |
3077 | struct MR_PD_ADDRESS *pd_addr; | |
3078 | dma_addr_t ci_h = 0; | |
3079 | ||
3080 | cmd = megasas_get_cmd(instance); | |
3081 | ||
3082 | if (!cmd) { | |
3083 | printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n"); | |
3084 | return -ENOMEM; | |
3085 | } | |
3086 | ||
3087 | dcmd = &cmd->frame->dcmd; | |
3088 | ||
3089 | ci = pci_alloc_consistent(instance->pdev, | |
3090 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h); | |
3091 | ||
3092 | if (!ci) { | |
3093 | printk(KERN_DEBUG "Failed to alloc mem for pd_list\n"); | |
3094 | megasas_return_cmd(instance, cmd); | |
3095 | return -ENOMEM; | |
3096 | } | |
3097 | ||
3098 | memset(ci, 0, sizeof(*ci)); | |
3099 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3100 | ||
3101 | dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST; | |
3102 | dcmd->mbox.b[1] = 0; | |
3103 | dcmd->cmd = MFI_CMD_DCMD; | |
3104 | dcmd->cmd_status = 0xFF; | |
3105 | dcmd->sge_count = 1; | |
3106 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3107 | dcmd->timeout = 0; | |
780a3762 | 3108 | dcmd->pad_0 = 0; |
81e403ce YB |
3109 | dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); |
3110 | dcmd->opcode = MR_DCMD_PD_LIST_QUERY; | |
3111 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
3112 | dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST); | |
3113 | ||
3114 | if (!megasas_issue_polled(instance, cmd)) { | |
3115 | ret = 0; | |
3116 | } else { | |
3117 | ret = -1; | |
3118 | } | |
3119 | ||
3120 | /* | |
3121 | * the following function will get the instance PD LIST. | |
3122 | */ | |
3123 | ||
3124 | pd_addr = ci->addr; | |
3125 | ||
3126 | if ( ret == 0 && | |
3127 | (ci->count < | |
3128 | (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) { | |
3129 | ||
3130 | memset(instance->pd_list, 0, | |
3131 | MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)); | |
3132 | ||
3133 | for (pd_index = 0; pd_index < ci->count; pd_index++) { | |
3134 | ||
3135 | instance->pd_list[pd_addr->deviceId].tid = | |
3136 | pd_addr->deviceId; | |
3137 | instance->pd_list[pd_addr->deviceId].driveType = | |
3138 | pd_addr->scsiDevType; | |
3139 | instance->pd_list[pd_addr->deviceId].driveState = | |
3140 | MR_PD_STATE_SYSTEM; | |
3141 | pd_addr++; | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | pci_free_consistent(instance->pdev, | |
3146 | MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), | |
3147 | ci, ci_h); | |
3148 | megasas_return_cmd(instance, cmd); | |
3149 | ||
3150 | return ret; | |
3151 | } | |
3152 | ||
bdc6fb8d YB |
3153 | /* |
3154 | * megasas_get_ld_list_info - Returns FW's ld_list structure | |
3155 | * @instance: Adapter soft state | |
3156 | * @ld_list: ld_list structure | |
3157 | * | |
3158 | * Issues an internal command (DCMD) to get the FW's controller PD | |
3159 | * list structure. This information is mainly used to find out SYSTEM | |
3160 | * supported by the FW. | |
3161 | */ | |
3162 | static int | |
3163 | megasas_get_ld_list(struct megasas_instance *instance) | |
3164 | { | |
3165 | int ret = 0, ld_index = 0, ids = 0; | |
3166 | struct megasas_cmd *cmd; | |
3167 | struct megasas_dcmd_frame *dcmd; | |
3168 | struct MR_LD_LIST *ci; | |
3169 | dma_addr_t ci_h = 0; | |
3170 | ||
3171 | cmd = megasas_get_cmd(instance); | |
3172 | ||
3173 | if (!cmd) { | |
3174 | printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n"); | |
3175 | return -ENOMEM; | |
3176 | } | |
3177 | ||
3178 | dcmd = &cmd->frame->dcmd; | |
3179 | ||
3180 | ci = pci_alloc_consistent(instance->pdev, | |
3181 | sizeof(struct MR_LD_LIST), | |
3182 | &ci_h); | |
3183 | ||
3184 | if (!ci) { | |
3185 | printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n"); | |
3186 | megasas_return_cmd(instance, cmd); | |
3187 | return -ENOMEM; | |
3188 | } | |
3189 | ||
3190 | memset(ci, 0, sizeof(*ci)); | |
3191 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3192 | ||
3193 | dcmd->cmd = MFI_CMD_DCMD; | |
3194 | dcmd->cmd_status = 0xFF; | |
3195 | dcmd->sge_count = 1; | |
3196 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3197 | dcmd->timeout = 0; | |
3198 | dcmd->data_xfer_len = sizeof(struct MR_LD_LIST); | |
3199 | dcmd->opcode = MR_DCMD_LD_GET_LIST; | |
3200 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
3201 | dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST); | |
3202 | dcmd->pad_0 = 0; | |
3203 | ||
3204 | if (!megasas_issue_polled(instance, cmd)) { | |
3205 | ret = 0; | |
3206 | } else { | |
3207 | ret = -1; | |
3208 | } | |
3209 | ||
3210 | /* the following function will get the instance PD LIST */ | |
3211 | ||
39a98554 | 3212 | if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) { |
bdc6fb8d YB |
3213 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
3214 | ||
3215 | for (ld_index = 0; ld_index < ci->ldCount; ld_index++) { | |
3216 | if (ci->ldList[ld_index].state != 0) { | |
3217 | ids = ci->ldList[ld_index].ref.targetId; | |
3218 | instance->ld_ids[ids] = | |
3219 | ci->ldList[ld_index].ref.targetId; | |
3220 | } | |
3221 | } | |
3222 | } | |
3223 | ||
3224 | pci_free_consistent(instance->pdev, | |
3225 | sizeof(struct MR_LD_LIST), | |
3226 | ci, | |
3227 | ci_h); | |
3228 | ||
3229 | megasas_return_cmd(instance, cmd); | |
3230 | return ret; | |
3231 | } | |
3232 | ||
c4a3e0a5 BS |
3233 | /** |
3234 | * megasas_get_controller_info - Returns FW's controller structure | |
3235 | * @instance: Adapter soft state | |
3236 | * @ctrl_info: Controller information structure | |
3237 | * | |
3238 | * Issues an internal command (DCMD) to get the FW's controller structure. | |
3239 | * This information is mainly used to find out the maximum IO transfer per | |
3240 | * command supported by the FW. | |
3241 | */ | |
3242 | static int | |
3243 | megasas_get_ctrl_info(struct megasas_instance *instance, | |
3244 | struct megasas_ctrl_info *ctrl_info) | |
3245 | { | |
3246 | int ret = 0; | |
3247 | struct megasas_cmd *cmd; | |
3248 | struct megasas_dcmd_frame *dcmd; | |
3249 | struct megasas_ctrl_info *ci; | |
3250 | dma_addr_t ci_h = 0; | |
3251 | ||
3252 | cmd = megasas_get_cmd(instance); | |
3253 | ||
3254 | if (!cmd) { | |
3255 | printk(KERN_DEBUG "megasas: Failed to get a free cmd\n"); | |
3256 | return -ENOMEM; | |
3257 | } | |
3258 | ||
3259 | dcmd = &cmd->frame->dcmd; | |
3260 | ||
3261 | ci = pci_alloc_consistent(instance->pdev, | |
3262 | sizeof(struct megasas_ctrl_info), &ci_h); | |
3263 | ||
3264 | if (!ci) { | |
3265 | printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n"); | |
3266 | megasas_return_cmd(instance, cmd); | |
3267 | return -ENOMEM; | |
3268 | } | |
3269 | ||
3270 | memset(ci, 0, sizeof(*ci)); | |
3271 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3272 | ||
3273 | dcmd->cmd = MFI_CMD_DCMD; | |
3274 | dcmd->cmd_status = 0xFF; | |
3275 | dcmd->sge_count = 1; | |
3276 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3277 | dcmd->timeout = 0; | |
780a3762 | 3278 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3279 | dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info); |
3280 | dcmd->opcode = MR_DCMD_CTRL_GET_INFO; | |
3281 | dcmd->sgl.sge32[0].phys_addr = ci_h; | |
3282 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info); | |
3283 | ||
3284 | if (!megasas_issue_polled(instance, cmd)) { | |
3285 | ret = 0; | |
3286 | memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info)); | |
3287 | } else { | |
3288 | ret = -1; | |
3289 | } | |
3290 | ||
3291 | pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info), | |
3292 | ci, ci_h); | |
3293 | ||
3294 | megasas_return_cmd(instance, cmd); | |
3295 | return ret; | |
3296 | } | |
3297 | ||
31ea7088 | 3298 | /** |
3299 | * megasas_issue_init_mfi - Initializes the FW | |
3300 | * @instance: Adapter soft state | |
3301 | * | |
3302 | * Issues the INIT MFI cmd | |
3303 | */ | |
3304 | static int | |
3305 | megasas_issue_init_mfi(struct megasas_instance *instance) | |
3306 | { | |
3307 | u32 context; | |
3308 | ||
3309 | struct megasas_cmd *cmd; | |
3310 | ||
3311 | struct megasas_init_frame *init_frame; | |
3312 | struct megasas_init_queue_info *initq_info; | |
3313 | dma_addr_t init_frame_h; | |
3314 | dma_addr_t initq_info_h; | |
3315 | ||
3316 | /* | |
3317 | * Prepare a init frame. Note the init frame points to queue info | |
3318 | * structure. Each frame has SGL allocated after first 64 bytes. For | |
3319 | * this frame - since we don't need any SGL - we use SGL's space as | |
3320 | * queue info structure | |
3321 | * | |
3322 | * We will not get a NULL command below. We just created the pool. | |
3323 | */ | |
3324 | cmd = megasas_get_cmd(instance); | |
3325 | ||
3326 | init_frame = (struct megasas_init_frame *)cmd->frame; | |
3327 | initq_info = (struct megasas_init_queue_info *) | |
3328 | ((unsigned long)init_frame + 64); | |
3329 | ||
3330 | init_frame_h = cmd->frame_phys_addr; | |
3331 | initq_info_h = init_frame_h + 64; | |
3332 | ||
3333 | context = init_frame->context; | |
3334 | memset(init_frame, 0, MEGAMFI_FRAME_SIZE); | |
3335 | memset(initq_info, 0, sizeof(struct megasas_init_queue_info)); | |
3336 | init_frame->context = context; | |
3337 | ||
3338 | initq_info->reply_queue_entries = instance->max_fw_cmds + 1; | |
3339 | initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h; | |
3340 | ||
3341 | initq_info->producer_index_phys_addr_lo = instance->producer_h; | |
3342 | initq_info->consumer_index_phys_addr_lo = instance->consumer_h; | |
3343 | ||
3344 | init_frame->cmd = MFI_CMD_INIT; | |
3345 | init_frame->cmd_status = 0xFF; | |
3346 | init_frame->queue_info_new_phys_addr_lo = initq_info_h; | |
3347 | ||
3348 | init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info); | |
3349 | ||
3350 | /* | |
3351 | * disable the intr before firing the init frame to FW | |
3352 | */ | |
3353 | instance->instancet->disable_intr(instance->reg_set); | |
3354 | ||
3355 | /* | |
3356 | * Issue the init frame in polled mode | |
3357 | */ | |
3358 | ||
3359 | if (megasas_issue_polled(instance, cmd)) { | |
3360 | printk(KERN_ERR "megasas: Failed to init firmware\n"); | |
3361 | megasas_return_cmd(instance, cmd); | |
3362 | goto fail_fw_init; | |
3363 | } | |
3364 | ||
3365 | megasas_return_cmd(instance, cmd); | |
3366 | ||
3367 | return 0; | |
3368 | ||
3369 | fail_fw_init: | |
3370 | return -EINVAL; | |
3371 | } | |
3372 | ||
ad84db2e | 3373 | /** |
3374 | * megasas_start_timer - Initializes a timer object | |
3375 | * @instance: Adapter soft state | |
3376 | * @timer: timer object to be initialized | |
3377 | * @fn: timer function | |
3378 | * @interval: time interval between timer function call | |
3379 | */ | |
3380 | static inline void | |
3381 | megasas_start_timer(struct megasas_instance *instance, | |
3382 | struct timer_list *timer, | |
3383 | void *fn, unsigned long interval) | |
3384 | { | |
3385 | init_timer(timer); | |
3386 | timer->expires = jiffies + interval; | |
3387 | timer->data = (unsigned long)instance; | |
3388 | timer->function = fn; | |
3389 | add_timer(timer); | |
3390 | } | |
3391 | ||
3392 | /** | |
3393 | * megasas_io_completion_timer - Timer fn | |
3394 | * @instance_addr: Address of adapter soft state | |
3395 | * | |
3396 | * Schedules tasklet for cmd completion | |
3397 | * if poll_mode_io is set | |
3398 | */ | |
3399 | static void | |
3400 | megasas_io_completion_timer(unsigned long instance_addr) | |
3401 | { | |
3402 | struct megasas_instance *instance = | |
3403 | (struct megasas_instance *)instance_addr; | |
3404 | ||
3405 | if (atomic_read(&instance->fw_outstanding)) | |
3406 | tasklet_schedule(&instance->isr_tasklet); | |
3407 | ||
3408 | /* Restart timer */ | |
3409 | if (poll_mode_io) | |
3410 | mod_timer(&instance->io_completion_timer, | |
3411 | jiffies + MEGASAS_COMPLETION_TIMER_INTERVAL); | |
3412 | } | |
3413 | ||
cd50ba8e | 3414 | static u32 |
3415 | megasas_init_adapter_mfi(struct megasas_instance *instance) | |
c4a3e0a5 | 3416 | { |
cd50ba8e | 3417 | struct megasas_register_set __iomem *reg_set; |
c4a3e0a5 BS |
3418 | u32 context_sz; |
3419 | u32 reply_q_sz; | |
c4a3e0a5 BS |
3420 | |
3421 | reg_set = instance->reg_set; | |
3422 | ||
c4a3e0a5 BS |
3423 | /* |
3424 | * Get various operational parameters from status register | |
3425 | */ | |
1341c939 | 3426 | instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; |
e3bbff9f SP |
3427 | /* |
3428 | * Reduce the max supported cmds by 1. This is to ensure that the | |
3429 | * reply_q_sz (1 more than the max cmd that driver may send) | |
3430 | * does not exceed max cmds that the FW can support | |
3431 | */ | |
3432 | instance->max_fw_cmds = instance->max_fw_cmds-1; | |
9c915a8c | 3433 | instance->max_mfi_cmds = instance->max_fw_cmds; |
0d49016b | 3434 | instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >> |
1341c939 | 3435 | 0x10; |
c4a3e0a5 BS |
3436 | /* |
3437 | * Create a pool of commands | |
3438 | */ | |
3439 | if (megasas_alloc_cmds(instance)) | |
3440 | goto fail_alloc_cmds; | |
3441 | ||
3442 | /* | |
3443 | * Allocate memory for reply queue. Length of reply queue should | |
3444 | * be _one_ more than the maximum commands handled by the firmware. | |
3445 | * | |
3446 | * Note: When FW completes commands, it places corresponding contex | |
3447 | * values in this circular reply queue. This circular queue is a fairly | |
3448 | * typical producer-consumer queue. FW is the producer (of completed | |
3449 | * commands) and the driver is the consumer. | |
3450 | */ | |
3451 | context_sz = sizeof(u32); | |
3452 | reply_q_sz = context_sz * (instance->max_fw_cmds + 1); | |
3453 | ||
3454 | instance->reply_queue = pci_alloc_consistent(instance->pdev, | |
3455 | reply_q_sz, | |
3456 | &instance->reply_queue_h); | |
3457 | ||
3458 | if (!instance->reply_queue) { | |
3459 | printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n"); | |
3460 | goto fail_reply_queue; | |
3461 | } | |
3462 | ||
31ea7088 | 3463 | if (megasas_issue_init_mfi(instance)) |
c4a3e0a5 | 3464 | goto fail_fw_init; |
c4a3e0a5 | 3465 | |
39a98554 | 3466 | instance->fw_support_ieee = 0; |
3467 | instance->fw_support_ieee = | |
3468 | (instance->instancet->read_fw_status_reg(reg_set) & | |
3469 | 0x04000000); | |
3470 | ||
3471 | printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d", | |
3472 | instance->fw_support_ieee); | |
3473 | ||
3474 | if (instance->fw_support_ieee) | |
3475 | instance->flag_ieee = 1; | |
3476 | ||
cd50ba8e | 3477 | return 0; |
3478 | ||
3479 | fail_fw_init: | |
3480 | ||
3481 | pci_free_consistent(instance->pdev, reply_q_sz, | |
3482 | instance->reply_queue, instance->reply_queue_h); | |
3483 | fail_reply_queue: | |
3484 | megasas_free_cmds(instance); | |
3485 | ||
3486 | fail_alloc_cmds: | |
cd50ba8e | 3487 | return 1; |
3488 | } | |
3489 | ||
3490 | /** | |
3491 | * megasas_init_fw - Initializes the FW | |
3492 | * @instance: Adapter soft state | |
3493 | * | |
3494 | * This is the main function for initializing firmware | |
3495 | */ | |
3496 | ||
3497 | static int megasas_init_fw(struct megasas_instance *instance) | |
3498 | { | |
3499 | u32 max_sectors_1; | |
3500 | u32 max_sectors_2; | |
3f1abce4 | 3501 | u32 tmp_sectors, msix_enable; |
cd50ba8e | 3502 | struct megasas_register_set __iomem *reg_set; |
3503 | struct megasas_ctrl_info *ctrl_info; | |
3504 | unsigned long bar_list; | |
c8e858fe | 3505 | int i; |
cd50ba8e | 3506 | |
3507 | /* Find first memory bar */ | |
3508 | bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM); | |
3509 | instance->bar = find_first_bit(&bar_list, sizeof(unsigned long)); | |
3510 | instance->base_addr = pci_resource_start(instance->pdev, instance->bar); | |
3511 | if (pci_request_selected_regions(instance->pdev, instance->bar, | |
3512 | "megasas: LSI")) { | |
3513 | printk(KERN_DEBUG "megasas: IO memory region busy!\n"); | |
3514 | return -EBUSY; | |
3515 | } | |
3516 | ||
3517 | instance->reg_set = ioremap_nocache(instance->base_addr, 8192); | |
3518 | ||
3519 | if (!instance->reg_set) { | |
3520 | printk(KERN_DEBUG "megasas: Failed to map IO mem\n"); | |
3521 | goto fail_ioremap; | |
3522 | } | |
3523 | ||
3524 | reg_set = instance->reg_set; | |
3525 | ||
3526 | switch (instance->pdev->device) { | |
9c915a8c | 3527 | case PCI_DEVICE_ID_LSI_FUSION: |
36807e67 | 3528 | case PCI_DEVICE_ID_LSI_INVADER: |
9c915a8c | 3529 | instance->instancet = &megasas_instance_template_fusion; |
3530 | break; | |
cd50ba8e | 3531 | case PCI_DEVICE_ID_LSI_SAS1078R: |
3532 | case PCI_DEVICE_ID_LSI_SAS1078DE: | |
3533 | instance->instancet = &megasas_instance_template_ppc; | |
3534 | break; | |
3535 | case PCI_DEVICE_ID_LSI_SAS1078GEN2: | |
3536 | case PCI_DEVICE_ID_LSI_SAS0079GEN2: | |
3537 | instance->instancet = &megasas_instance_template_gen2; | |
3538 | break; | |
3539 | case PCI_DEVICE_ID_LSI_SAS0073SKINNY: | |
3540 | case PCI_DEVICE_ID_LSI_SAS0071SKINNY: | |
3541 | instance->instancet = &megasas_instance_template_skinny; | |
3542 | break; | |
3543 | case PCI_DEVICE_ID_LSI_SAS1064R: | |
3544 | case PCI_DEVICE_ID_DELL_PERC5: | |
3545 | default: | |
3546 | instance->instancet = &megasas_instance_template_xscale; | |
3547 | break; | |
3548 | } | |
3549 | ||
3550 | /* | |
3551 | * We expect the FW state to be READY | |
3552 | */ | |
058a8fac | 3553 | if (megasas_transition_to_ready(instance, 0)) |
cd50ba8e | 3554 | goto fail_ready_state; |
3555 | ||
3f1abce4 | 3556 | /* Check if MSI-X is supported while in ready state */ |
3557 | msix_enable = (instance->instancet->read_fw_status_reg(reg_set) & | |
3558 | 0x4000000) >> 0x1a; | |
c8e858fe | 3559 | if (msix_enable && !msix_disable) { |
3560 | /* Check max MSI-X vectors */ | |
3561 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || | |
3562 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { | |
3563 | instance->msix_vectors = (readl(&instance->reg_set-> | |
3564 | outbound_scratch_pad_2 | |
3565 | ) & 0x1F) + 1; | |
3566 | } else | |
3567 | instance->msix_vectors = 1; | |
3568 | /* Don't bother allocating more MSI-X vectors than cpus */ | |
3569 | instance->msix_vectors = min(instance->msix_vectors, | |
3570 | (unsigned int)num_online_cpus()); | |
3571 | for (i = 0; i < instance->msix_vectors; i++) | |
3572 | instance->msixentry[i].entry = i; | |
3573 | i = pci_enable_msix(instance->pdev, instance->msixentry, | |
3574 | instance->msix_vectors); | |
3575 | if (i >= 0) { | |
3576 | if (i) { | |
3577 | if (!pci_enable_msix(instance->pdev, | |
3578 | instance->msixentry, i)) | |
3579 | instance->msix_vectors = i; | |
3580 | else | |
3581 | instance->msix_vectors = 0; | |
3582 | } | |
3583 | } else | |
3584 | instance->msix_vectors = 0; | |
3585 | } | |
3f1abce4 | 3586 | |
cd50ba8e | 3587 | /* Get operational params, sge flags, send init cmd to controller */ |
3588 | if (instance->instancet->init_adapter(instance)) | |
eb1b1237 | 3589 | goto fail_init_adapter; |
cd50ba8e | 3590 | |
3591 | printk(KERN_ERR "megasas: INIT adapter done\n"); | |
3592 | ||
39a98554 | 3593 | /** for passthrough |
3594 | * the following function will get the PD LIST. | |
3595 | */ | |
3596 | ||
81e403ce YB |
3597 | memset(instance->pd_list, 0 , |
3598 | (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list))); | |
3599 | megasas_get_pd_list(instance); | |
3600 | ||
bdc6fb8d YB |
3601 | memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); |
3602 | megasas_get_ld_list(instance); | |
3603 | ||
c4a3e0a5 BS |
3604 | ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL); |
3605 | ||
3606 | /* | |
3607 | * Compute the max allowed sectors per IO: The controller info has two | |
3608 | * limits on max sectors. Driver should use the minimum of these two. | |
3609 | * | |
3610 | * 1 << stripe_sz_ops.min = max sectors per strip | |
3611 | * | |
3612 | * Note that older firmwares ( < FW ver 30) didn't report information | |
3613 | * to calculate max_sectors_1. So the number ended up as zero always. | |
3614 | */ | |
14faea9f | 3615 | tmp_sectors = 0; |
c4a3e0a5 BS |
3616 | if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { |
3617 | ||
3618 | max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * | |
3619 | ctrl_info->max_strips_per_io; | |
3620 | max_sectors_2 = ctrl_info->max_request_size; | |
3621 | ||
14faea9f | 3622 | tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); |
39a98554 | 3623 | instance->disableOnlineCtrlReset = |
3624 | ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset; | |
14faea9f | 3625 | } |
3626 | ||
3627 | instance->max_sectors_per_req = instance->max_num_sge * | |
3628 | PAGE_SIZE / 512; | |
3629 | if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) | |
3630 | instance->max_sectors_per_req = tmp_sectors; | |
c4a3e0a5 BS |
3631 | |
3632 | kfree(ctrl_info); | |
3633 | ||
5d018ad0 SP |
3634 | /* |
3635 | * Setup tasklet for cmd completion | |
3636 | */ | |
3637 | ||
f86c5424 | 3638 | tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, |
ad84db2e | 3639 | (unsigned long)instance); |
3640 | ||
3641 | /* Initialize the cmd completion timer */ | |
3642 | if (poll_mode_io) | |
3643 | megasas_start_timer(instance, &instance->io_completion_timer, | |
3644 | megasas_io_completion_timer, | |
3645 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
c4a3e0a5 BS |
3646 | return 0; |
3647 | ||
eb1b1237 | 3648 | fail_init_adapter: |
cd50ba8e | 3649 | fail_ready_state: |
c4a3e0a5 BS |
3650 | iounmap(instance->reg_set); |
3651 | ||
3652 | fail_ioremap: | |
b6d5d880 | 3653 | pci_release_selected_regions(instance->pdev, instance->bar); |
c4a3e0a5 BS |
3654 | |
3655 | return -EINVAL; | |
3656 | } | |
3657 | ||
3658 | /** | |
3659 | * megasas_release_mfi - Reverses the FW initialization | |
3660 | * @intance: Adapter soft state | |
3661 | */ | |
3662 | static void megasas_release_mfi(struct megasas_instance *instance) | |
3663 | { | |
9c915a8c | 3664 | u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1); |
c4a3e0a5 | 3665 | |
9c915a8c | 3666 | if (instance->reply_queue) |
3667 | pci_free_consistent(instance->pdev, reply_q_sz, | |
c4a3e0a5 BS |
3668 | instance->reply_queue, instance->reply_queue_h); |
3669 | ||
3670 | megasas_free_cmds(instance); | |
3671 | ||
3672 | iounmap(instance->reg_set); | |
3673 | ||
b6d5d880 | 3674 | pci_release_selected_regions(instance->pdev, instance->bar); |
c4a3e0a5 BS |
3675 | } |
3676 | ||
3677 | /** | |
3678 | * megasas_get_seq_num - Gets latest event sequence numbers | |
3679 | * @instance: Adapter soft state | |
3680 | * @eli: FW event log sequence numbers information | |
3681 | * | |
3682 | * FW maintains a log of all events in a non-volatile area. Upper layers would | |
3683 | * usually find out the latest sequence number of the events, the seq number at | |
3684 | * the boot etc. They would "read" all the events below the latest seq number | |
3685 | * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq | |
3686 | * number), they would subsribe to AEN (asynchronous event notification) and | |
3687 | * wait for the events to happen. | |
3688 | */ | |
3689 | static int | |
3690 | megasas_get_seq_num(struct megasas_instance *instance, | |
3691 | struct megasas_evt_log_info *eli) | |
3692 | { | |
3693 | struct megasas_cmd *cmd; | |
3694 | struct megasas_dcmd_frame *dcmd; | |
3695 | struct megasas_evt_log_info *el_info; | |
3696 | dma_addr_t el_info_h = 0; | |
3697 | ||
3698 | cmd = megasas_get_cmd(instance); | |
3699 | ||
3700 | if (!cmd) { | |
3701 | return -ENOMEM; | |
3702 | } | |
3703 | ||
3704 | dcmd = &cmd->frame->dcmd; | |
3705 | el_info = pci_alloc_consistent(instance->pdev, | |
3706 | sizeof(struct megasas_evt_log_info), | |
3707 | &el_info_h); | |
3708 | ||
3709 | if (!el_info) { | |
3710 | megasas_return_cmd(instance, cmd); | |
3711 | return -ENOMEM; | |
3712 | } | |
3713 | ||
3714 | memset(el_info, 0, sizeof(*el_info)); | |
3715 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3716 | ||
3717 | dcmd->cmd = MFI_CMD_DCMD; | |
3718 | dcmd->cmd_status = 0x0; | |
3719 | dcmd->sge_count = 1; | |
3720 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3721 | dcmd->timeout = 0; | |
780a3762 | 3722 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
3723 | dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info); |
3724 | dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO; | |
3725 | dcmd->sgl.sge32[0].phys_addr = el_info_h; | |
3726 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info); | |
3727 | ||
3728 | megasas_issue_blocked_cmd(instance, cmd); | |
3729 | ||
3730 | /* | |
3731 | * Copy the data back into callers buffer | |
3732 | */ | |
3733 | memcpy(eli, el_info, sizeof(struct megasas_evt_log_info)); | |
3734 | ||
3735 | pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info), | |
3736 | el_info, el_info_h); | |
3737 | ||
3738 | megasas_return_cmd(instance, cmd); | |
3739 | ||
3740 | return 0; | |
3741 | } | |
3742 | ||
3743 | /** | |
3744 | * megasas_register_aen - Registers for asynchronous event notification | |
3745 | * @instance: Adapter soft state | |
3746 | * @seq_num: The starting sequence number | |
3747 | * @class_locale: Class of the event | |
3748 | * | |
3749 | * This function subscribes for AEN for events beyond the @seq_num. It requests | |
3750 | * to be notified if and only if the event is of type @class_locale | |
3751 | */ | |
3752 | static int | |
3753 | megasas_register_aen(struct megasas_instance *instance, u32 seq_num, | |
3754 | u32 class_locale_word) | |
3755 | { | |
3756 | int ret_val; | |
3757 | struct megasas_cmd *cmd; | |
3758 | struct megasas_dcmd_frame *dcmd; | |
3759 | union megasas_evt_class_locale curr_aen; | |
3760 | union megasas_evt_class_locale prev_aen; | |
3761 | ||
3762 | /* | |
3763 | * If there an AEN pending already (aen_cmd), check if the | |
3764 | * class_locale of that pending AEN is inclusive of the new | |
3765 | * AEN request we currently have. If it is, then we don't have | |
3766 | * to do anything. In other words, whichever events the current | |
3767 | * AEN request is subscribing to, have already been subscribed | |
3768 | * to. | |
3769 | * | |
3770 | * If the old_cmd is _not_ inclusive, then we have to abort | |
3771 | * that command, form a class_locale that is superset of both | |
3772 | * old and current and re-issue to the FW | |
3773 | */ | |
3774 | ||
3775 | curr_aen.word = class_locale_word; | |
3776 | ||
3777 | if (instance->aen_cmd) { | |
3778 | ||
3779 | prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1]; | |
3780 | ||
3781 | /* | |
3782 | * A class whose enum value is smaller is inclusive of all | |
3783 | * higher values. If a PROGRESS (= -1) was previously | |
3784 | * registered, then a new registration requests for higher | |
3785 | * classes need not be sent to FW. They are automatically | |
3786 | * included. | |
3787 | * | |
3788 | * Locale numbers don't have such hierarchy. They are bitmap | |
3789 | * values | |
3790 | */ | |
3791 | if ((prev_aen.members.class <= curr_aen.members.class) && | |
3792 | !((prev_aen.members.locale & curr_aen.members.locale) ^ | |
3793 | curr_aen.members.locale)) { | |
3794 | /* | |
3795 | * Previously issued event registration includes | |
3796 | * current request. Nothing to do. | |
3797 | */ | |
3798 | return 0; | |
3799 | } else { | |
3800 | curr_aen.members.locale |= prev_aen.members.locale; | |
3801 | ||
3802 | if (prev_aen.members.class < curr_aen.members.class) | |
3803 | curr_aen.members.class = prev_aen.members.class; | |
3804 | ||
3805 | instance->aen_cmd->abort_aen = 1; | |
3806 | ret_val = megasas_issue_blocked_abort_cmd(instance, | |
3807 | instance-> | |
3808 | aen_cmd); | |
3809 | ||
3810 | if (ret_val) { | |
3811 | printk(KERN_DEBUG "megasas: Failed to abort " | |
3812 | "previous AEN command\n"); | |
3813 | return ret_val; | |
3814 | } | |
3815 | } | |
3816 | } | |
3817 | ||
3818 | cmd = megasas_get_cmd(instance); | |
3819 | ||
3820 | if (!cmd) | |
3821 | return -ENOMEM; | |
3822 | ||
3823 | dcmd = &cmd->frame->dcmd; | |
3824 | ||
3825 | memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail)); | |
3826 | ||
3827 | /* | |
3828 | * Prepare DCMD for aen registration | |
3829 | */ | |
3830 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
3831 | ||
3832 | dcmd->cmd = MFI_CMD_DCMD; | |
3833 | dcmd->cmd_status = 0x0; | |
3834 | dcmd->sge_count = 1; | |
3835 | dcmd->flags = MFI_FRAME_DIR_READ; | |
3836 | dcmd->timeout = 0; | |
780a3762 | 3837 | dcmd->pad_0 = 0; |
39a98554 | 3838 | instance->last_seq_num = seq_num; |
c4a3e0a5 BS |
3839 | dcmd->data_xfer_len = sizeof(struct megasas_evt_detail); |
3840 | dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT; | |
3841 | dcmd->mbox.w[0] = seq_num; | |
3842 | dcmd->mbox.w[1] = curr_aen.word; | |
3843 | dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h; | |
3844 | dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail); | |
3845 | ||
f4c9a131 YB |
3846 | if (instance->aen_cmd != NULL) { |
3847 | megasas_return_cmd(instance, cmd); | |
3848 | return 0; | |
3849 | } | |
3850 | ||
c4a3e0a5 BS |
3851 | /* |
3852 | * Store reference to the cmd used to register for AEN. When an | |
3853 | * application wants us to register for AEN, we have to abort this | |
3854 | * cmd and re-register with a new EVENT LOCALE supplied by that app | |
3855 | */ | |
3856 | instance->aen_cmd = cmd; | |
3857 | ||
3858 | /* | |
3859 | * Issue the aen registration frame | |
3860 | */ | |
9c915a8c | 3861 | instance->instancet->issue_dcmd(instance, cmd); |
c4a3e0a5 BS |
3862 | |
3863 | return 0; | |
3864 | } | |
3865 | ||
3866 | /** | |
3867 | * megasas_start_aen - Subscribes to AEN during driver load time | |
3868 | * @instance: Adapter soft state | |
3869 | */ | |
3870 | static int megasas_start_aen(struct megasas_instance *instance) | |
3871 | { | |
3872 | struct megasas_evt_log_info eli; | |
3873 | union megasas_evt_class_locale class_locale; | |
3874 | ||
3875 | /* | |
3876 | * Get the latest sequence number from FW | |
3877 | */ | |
3878 | memset(&eli, 0, sizeof(eli)); | |
3879 | ||
3880 | if (megasas_get_seq_num(instance, &eli)) | |
3881 | return -1; | |
3882 | ||
3883 | /* | |
3884 | * Register AEN with FW for latest sequence number plus 1 | |
3885 | */ | |
3886 | class_locale.members.reserved = 0; | |
3887 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
3888 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
3889 | ||
3890 | return megasas_register_aen(instance, eli.newest_seq_num + 1, | |
3891 | class_locale.word); | |
3892 | } | |
3893 | ||
3894 | /** | |
3895 | * megasas_io_attach - Attaches this driver to SCSI mid-layer | |
3896 | * @instance: Adapter soft state | |
3897 | */ | |
3898 | static int megasas_io_attach(struct megasas_instance *instance) | |
3899 | { | |
3900 | struct Scsi_Host *host = instance->host; | |
3901 | ||
3902 | /* | |
3903 | * Export parameters required by SCSI mid-layer | |
3904 | */ | |
3905 | host->irq = instance->pdev->irq; | |
3906 | host->unique_id = instance->unique_id; | |
7bebf5c7 YB |
3907 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
3908 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
3909 | host->can_queue = | |
3910 | instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS; | |
3911 | } else | |
3912 | host->can_queue = | |
3913 | instance->max_fw_cmds - MEGASAS_INT_CMDS; | |
c4a3e0a5 BS |
3914 | host->this_id = instance->init_id; |
3915 | host->sg_tablesize = instance->max_num_sge; | |
42a8d2b3 | 3916 | |
3917 | if (instance->fw_support_ieee) | |
3918 | instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE; | |
3919 | ||
1fd10685 YB |
3920 | /* |
3921 | * Check if the module parameter value for max_sectors can be used | |
3922 | */ | |
3923 | if (max_sectors && max_sectors < instance->max_sectors_per_req) | |
3924 | instance->max_sectors_per_req = max_sectors; | |
3925 | else { | |
3926 | if (max_sectors) { | |
3927 | if (((instance->pdev->device == | |
3928 | PCI_DEVICE_ID_LSI_SAS1078GEN2) || | |
3929 | (instance->pdev->device == | |
3930 | PCI_DEVICE_ID_LSI_SAS0079GEN2)) && | |
3931 | (max_sectors <= MEGASAS_MAX_SECTORS)) { | |
3932 | instance->max_sectors_per_req = max_sectors; | |
3933 | } else { | |
3934 | printk(KERN_INFO "megasas: max_sectors should be > 0" | |
3935 | "and <= %d (or < 1MB for GEN2 controller)\n", | |
3936 | instance->max_sectors_per_req); | |
3937 | } | |
3938 | } | |
3939 | } | |
3940 | ||
c4a3e0a5 | 3941 | host->max_sectors = instance->max_sectors_per_req; |
9c915a8c | 3942 | host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN; |
c4a3e0a5 BS |
3943 | host->max_channel = MEGASAS_MAX_CHANNELS - 1; |
3944 | host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL; | |
3945 | host->max_lun = MEGASAS_MAX_LUN; | |
122da302 | 3946 | host->max_cmd_len = 16; |
c4a3e0a5 | 3947 | |
9c915a8c | 3948 | /* Fusion only supports host reset */ |
36807e67 | 3949 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || |
3950 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) { | |
9c915a8c | 3951 | host->hostt->eh_device_reset_handler = NULL; |
3952 | host->hostt->eh_bus_reset_handler = NULL; | |
3953 | } | |
3954 | ||
c4a3e0a5 BS |
3955 | /* |
3956 | * Notify the mid-layer about the new controller | |
3957 | */ | |
3958 | if (scsi_add_host(host, &instance->pdev->dev)) { | |
3959 | printk(KERN_DEBUG "megasas: scsi_add_host failed\n"); | |
3960 | return -ENODEV; | |
3961 | } | |
3962 | ||
3963 | /* | |
3964 | * Trigger SCSI to scan our drives | |
3965 | */ | |
3966 | scsi_scan_host(host); | |
3967 | return 0; | |
3968 | } | |
3969 | ||
31ea7088 | 3970 | static int |
3971 | megasas_set_dma_mask(struct pci_dev *pdev) | |
3972 | { | |
3973 | /* | |
3974 | * All our contollers are capable of performing 64-bit DMA | |
3975 | */ | |
3976 | if (IS_DMA64) { | |
6a35528a | 3977 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) { |
31ea7088 | 3978 | |
284901a9 | 3979 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3980 | goto fail_set_dma_mask; |
3981 | } | |
3982 | } else { | |
284901a9 | 3983 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) |
31ea7088 | 3984 | goto fail_set_dma_mask; |
3985 | } | |
3986 | return 0; | |
3987 | ||
3988 | fail_set_dma_mask: | |
3989 | return 1; | |
3990 | } | |
3991 | ||
c4a3e0a5 BS |
3992 | /** |
3993 | * megasas_probe_one - PCI hotplug entry point | |
3994 | * @pdev: PCI device structure | |
0d49016b | 3995 | * @id: PCI ids of supported hotplugged adapter |
c4a3e0a5 BS |
3996 | */ |
3997 | static int __devinit | |
3998 | megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
3999 | { | |
c8e858fe | 4000 | int rval, pos, i, j; |
c4a3e0a5 BS |
4001 | struct Scsi_Host *host; |
4002 | struct megasas_instance *instance; | |
66192dfe | 4003 | u16 control = 0; |
4004 | ||
4005 | /* Reset MSI-X in the kdump kernel */ | |
4006 | if (reset_devices) { | |
4007 | pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX); | |
4008 | if (pos) { | |
4009 | pci_read_config_word(pdev, msi_control_reg(pos), | |
4010 | &control); | |
4011 | if (control & PCI_MSIX_FLAGS_ENABLE) { | |
4012 | dev_info(&pdev->dev, "resetting MSI-X\n"); | |
4013 | pci_write_config_word(pdev, | |
4014 | msi_control_reg(pos), | |
4015 | control & | |
4016 | ~PCI_MSIX_FLAGS_ENABLE); | |
4017 | } | |
4018 | } | |
4019 | } | |
c4a3e0a5 BS |
4020 | |
4021 | /* | |
4022 | * Announce PCI information | |
4023 | */ | |
4024 | printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
4025 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
4026 | pdev->subsystem_device); | |
4027 | ||
4028 | printk("bus %d:slot %d:func %d\n", | |
4029 | pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); | |
4030 | ||
4031 | /* | |
4032 | * PCI prepping: enable device set bus mastering and dma mask | |
4033 | */ | |
aeab3fd7 | 4034 | rval = pci_enable_device_mem(pdev); |
c4a3e0a5 BS |
4035 | |
4036 | if (rval) { | |
4037 | return rval; | |
4038 | } | |
4039 | ||
4040 | pci_set_master(pdev); | |
4041 | ||
31ea7088 | 4042 | if (megasas_set_dma_mask(pdev)) |
4043 | goto fail_set_dma_mask; | |
c4a3e0a5 BS |
4044 | |
4045 | host = scsi_host_alloc(&megasas_template, | |
4046 | sizeof(struct megasas_instance)); | |
4047 | ||
4048 | if (!host) { | |
4049 | printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n"); | |
4050 | goto fail_alloc_instance; | |
4051 | } | |
4052 | ||
4053 | instance = (struct megasas_instance *)host->hostdata; | |
4054 | memset(instance, 0, sizeof(*instance)); | |
39a98554 | 4055 | atomic_set( &instance->fw_reset_no_pci_access, 0 ); |
9c915a8c | 4056 | instance->pdev = pdev; |
c4a3e0a5 | 4057 | |
9c915a8c | 4058 | switch (instance->pdev->device) { |
4059 | case PCI_DEVICE_ID_LSI_FUSION: | |
36807e67 | 4060 | case PCI_DEVICE_ID_LSI_INVADER: |
9c915a8c | 4061 | { |
4062 | struct fusion_context *fusion; | |
4063 | ||
4064 | instance->ctrl_context = | |
4065 | kzalloc(sizeof(struct fusion_context), GFP_KERNEL); | |
4066 | if (!instance->ctrl_context) { | |
4067 | printk(KERN_DEBUG "megasas: Failed to allocate " | |
4068 | "memory for Fusion context info\n"); | |
4069 | goto fail_alloc_dma_buf; | |
4070 | } | |
4071 | fusion = instance->ctrl_context; | |
4072 | INIT_LIST_HEAD(&fusion->cmd_pool); | |
4073 | spin_lock_init(&fusion->cmd_pool_lock); | |
4074 | } | |
4075 | break; | |
4076 | default: /* For all other supported controllers */ | |
4077 | ||
4078 | instance->producer = | |
4079 | pci_alloc_consistent(pdev, sizeof(u32), | |
4080 | &instance->producer_h); | |
4081 | instance->consumer = | |
4082 | pci_alloc_consistent(pdev, sizeof(u32), | |
4083 | &instance->consumer_h); | |
4084 | ||
4085 | if (!instance->producer || !instance->consumer) { | |
4086 | printk(KERN_DEBUG "megasas: Failed to allocate" | |
4087 | "memory for producer, consumer\n"); | |
4088 | goto fail_alloc_dma_buf; | |
4089 | } | |
c4a3e0a5 | 4090 | |
9c915a8c | 4091 | *instance->producer = 0; |
4092 | *instance->consumer = 0; | |
4093 | break; | |
c4a3e0a5 BS |
4094 | } |
4095 | ||
c3518837 | 4096 | megasas_poll_wait_aen = 0; |
f4c9a131 | 4097 | instance->flag_ieee = 0; |
7e8a75f4 | 4098 | instance->ev = NULL; |
39a98554 | 4099 | instance->issuepend_done = 1; |
4100 | instance->adprecovery = MEGASAS_HBA_OPERATIONAL; | |
4101 | megasas_poll_wait_aen = 0; | |
c4a3e0a5 BS |
4102 | |
4103 | instance->evt_detail = pci_alloc_consistent(pdev, | |
4104 | sizeof(struct | |
4105 | megasas_evt_detail), | |
4106 | &instance->evt_detail_h); | |
4107 | ||
4108 | if (!instance->evt_detail) { | |
4109 | printk(KERN_DEBUG "megasas: Failed to allocate memory for " | |
4110 | "event detail structure\n"); | |
4111 | goto fail_alloc_dma_buf; | |
4112 | } | |
4113 | ||
4114 | /* | |
4115 | * Initialize locks and queues | |
4116 | */ | |
4117 | INIT_LIST_HEAD(&instance->cmd_pool); | |
39a98554 | 4118 | INIT_LIST_HEAD(&instance->internal_reset_pending_q); |
c4a3e0a5 | 4119 | |
e4a082c7 SP |
4120 | atomic_set(&instance->fw_outstanding,0); |
4121 | ||
c4a3e0a5 BS |
4122 | init_waitqueue_head(&instance->int_cmd_wait_q); |
4123 | init_waitqueue_head(&instance->abort_cmd_wait_q); | |
4124 | ||
4125 | spin_lock_init(&instance->cmd_pool_lock); | |
39a98554 | 4126 | spin_lock_init(&instance->hba_lock); |
7343eb65 | 4127 | spin_lock_init(&instance->completion_lock); |
c3518837 | 4128 | spin_lock_init(&poll_aen_lock); |
c4a3e0a5 | 4129 | |
e5a69e27 | 4130 | mutex_init(&instance->aen_mutex); |
9c915a8c | 4131 | mutex_init(&instance->reset_mutex); |
c4a3e0a5 BS |
4132 | |
4133 | /* | |
4134 | * Initialize PCI related and misc parameters | |
4135 | */ | |
c4a3e0a5 BS |
4136 | instance->host = host; |
4137 | instance->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
4138 | instance->init_id = MEGASAS_DEFAULT_INIT_ID; | |
4139 | ||
7bebf5c7 YB |
4140 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) || |
4141 | (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) { | |
f4c9a131 | 4142 | instance->flag_ieee = 1; |
7bebf5c7 YB |
4143 | sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS); |
4144 | } else | |
4145 | sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS); | |
4146 | ||
658dcedb | 4147 | megasas_dbg_lvl = 0; |
05e9ebbe | 4148 | instance->flag = 0; |
0c79e681 | 4149 | instance->unload = 1; |
05e9ebbe | 4150 | instance->last_time = 0; |
39a98554 | 4151 | instance->disableOnlineCtrlReset = 1; |
4152 | ||
36807e67 | 4153 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || |
4154 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) | |
9c915a8c | 4155 | INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq); |
4156 | else | |
4157 | INIT_WORK(&instance->work_init, process_fw_state_change_wq); | |
658dcedb | 4158 | |
0a77066a | 4159 | /* |
4160 | * Initialize MFI Firmware | |
4161 | */ | |
4162 | if (megasas_init_fw(instance)) | |
4163 | goto fail_init_mfi; | |
4164 | ||
c4a3e0a5 BS |
4165 | /* |
4166 | * Register IRQ | |
4167 | */ | |
c8e858fe | 4168 | if (instance->msix_vectors) { |
4169 | for (i = 0 ; i < instance->msix_vectors; i++) { | |
4170 | instance->irq_context[i].instance = instance; | |
4171 | instance->irq_context[i].MSIxIndex = i; | |
4172 | if (request_irq(instance->msixentry[i].vector, | |
4173 | instance->instancet->service_isr, 0, | |
4174 | "megasas", | |
4175 | &instance->irq_context[i])) { | |
4176 | printk(KERN_DEBUG "megasas: Failed to " | |
4177 | "register IRQ for vector %d.\n", i); | |
4178 | for (j = 0 ; j < i ; j++) | |
4179 | free_irq( | |
4180 | instance->msixentry[j].vector, | |
4181 | &instance->irq_context[j]); | |
4182 | goto fail_irq; | |
4183 | } | |
4184 | } | |
4185 | } else { | |
4186 | instance->irq_context[0].instance = instance; | |
4187 | instance->irq_context[0].MSIxIndex = 0; | |
4188 | if (request_irq(pdev->irq, instance->instancet->service_isr, | |
4189 | IRQF_SHARED, "megasas", | |
4190 | &instance->irq_context[0])) { | |
4191 | printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); | |
4192 | goto fail_irq; | |
4193 | } | |
c4a3e0a5 BS |
4194 | } |
4195 | ||
1341c939 | 4196 | instance->instancet->enable_intr(instance->reg_set); |
c4a3e0a5 BS |
4197 | |
4198 | /* | |
4199 | * Store instance in PCI softstate | |
4200 | */ | |
4201 | pci_set_drvdata(pdev, instance); | |
4202 | ||
4203 | /* | |
4204 | * Add this controller to megasas_mgmt_info structure so that it | |
4205 | * can be exported to management applications | |
4206 | */ | |
4207 | megasas_mgmt_info.count++; | |
4208 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance; | |
4209 | megasas_mgmt_info.max_index++; | |
4210 | ||
541f90b7 | 4211 | /* |
4212 | * Register with SCSI mid-layer | |
4213 | */ | |
4214 | if (megasas_io_attach(instance)) | |
4215 | goto fail_io_attach; | |
4216 | ||
4217 | instance->unload = 0; | |
4218 | ||
c4a3e0a5 BS |
4219 | /* |
4220 | * Initiate AEN (Asynchronous Event Notification) | |
4221 | */ | |
4222 | if (megasas_start_aen(instance)) { | |
4223 | printk(KERN_DEBUG "megasas: start aen failed\n"); | |
4224 | goto fail_start_aen; | |
4225 | } | |
4226 | ||
c4a3e0a5 BS |
4227 | return 0; |
4228 | ||
4229 | fail_start_aen: | |
4230 | fail_io_attach: | |
4231 | megasas_mgmt_info.count--; | |
4232 | megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL; | |
4233 | megasas_mgmt_info.max_index--; | |
4234 | ||
4235 | pci_set_drvdata(pdev, NULL); | |
b274cab7 | 4236 | instance->instancet->disable_intr(instance->reg_set); |
c8e858fe | 4237 | if (instance->msix_vectors) |
4238 | for (i = 0 ; i < instance->msix_vectors; i++) | |
4239 | free_irq(instance->msixentry[i].vector, | |
4240 | &instance->irq_context[i]); | |
4241 | else | |
4242 | free_irq(instance->pdev->irq, &instance->irq_context[0]); | |
eb1b1237 | 4243 | fail_irq: |
36807e67 | 4244 | if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) || |
4245 | (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) | |
eb1b1237 | 4246 | megasas_release_fusion(instance); |
4247 | else | |
4248 | megasas_release_mfi(instance); | |
c4a3e0a5 | 4249 | fail_init_mfi: |
c8e858fe | 4250 | if (instance->msix_vectors) |
0a77066a | 4251 | pci_disable_msix(instance->pdev); |
c4a3e0a5 BS |
4252 | fail_alloc_dma_buf: |
4253 | if (instance->evt_detail) | |
4254 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
4255 | instance->evt_detail, | |
4256 | instance->evt_detail_h); | |
4257 | ||
eb1b1237 | 4258 | if (instance->producer) |
c4a3e0a5 BS |
4259 | pci_free_consistent(pdev, sizeof(u32), instance->producer, |
4260 | instance->producer_h); | |
4261 | if (instance->consumer) | |
4262 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
4263 | instance->consumer_h); | |
4264 | scsi_host_put(host); | |
4265 | ||
4266 | fail_alloc_instance: | |
4267 | fail_set_dma_mask: | |
4268 | pci_disable_device(pdev); | |
4269 | ||
4270 | return -ENODEV; | |
4271 | } | |
4272 | ||
4273 | /** | |
4274 | * megasas_flush_cache - Requests FW to flush all its caches | |
4275 | * @instance: Adapter soft state | |
4276 | */ | |
4277 | static void megasas_flush_cache(struct megasas_instance *instance) | |
4278 | { | |
4279 | struct megasas_cmd *cmd; | |
4280 | struct megasas_dcmd_frame *dcmd; | |
4281 | ||
39a98554 | 4282 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
4283 | return; | |
4284 | ||
c4a3e0a5 BS |
4285 | cmd = megasas_get_cmd(instance); |
4286 | ||
4287 | if (!cmd) | |
4288 | return; | |
4289 | ||
4290 | dcmd = &cmd->frame->dcmd; | |
4291 | ||
4292 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
4293 | ||
4294 | dcmd->cmd = MFI_CMD_DCMD; | |
4295 | dcmd->cmd_status = 0x0; | |
4296 | dcmd->sge_count = 0; | |
4297 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
4298 | dcmd->timeout = 0; | |
780a3762 | 4299 | dcmd->pad_0 = 0; |
c4a3e0a5 BS |
4300 | dcmd->data_xfer_len = 0; |
4301 | dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH; | |
4302 | dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE; | |
4303 | ||
4304 | megasas_issue_blocked_cmd(instance, cmd); | |
4305 | ||
4306 | megasas_return_cmd(instance, cmd); | |
4307 | ||
4308 | return; | |
4309 | } | |
4310 | ||
4311 | /** | |
4312 | * megasas_shutdown_controller - Instructs FW to shutdown the controller | |
4313 | * @instance: Adapter soft state | |
31ea7088 | 4314 | * @opcode: Shutdown/Hibernate |
c4a3e0a5 | 4315 | */ |
31ea7088 | 4316 | static void megasas_shutdown_controller(struct megasas_instance *instance, |
4317 | u32 opcode) | |
c4a3e0a5 BS |
4318 | { |
4319 | struct megasas_cmd *cmd; | |
4320 | struct megasas_dcmd_frame *dcmd; | |
4321 | ||
39a98554 | 4322 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) |
4323 | return; | |
4324 | ||
c4a3e0a5 BS |
4325 | cmd = megasas_get_cmd(instance); |
4326 | ||
4327 | if (!cmd) | |
4328 | return; | |
4329 | ||
4330 | if (instance->aen_cmd) | |
4331 | megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd); | |
9c915a8c | 4332 | if (instance->map_update_cmd) |
4333 | megasas_issue_blocked_abort_cmd(instance, | |
4334 | instance->map_update_cmd); | |
c4a3e0a5 BS |
4335 | dcmd = &cmd->frame->dcmd; |
4336 | ||
4337 | memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); | |
4338 | ||
4339 | dcmd->cmd = MFI_CMD_DCMD; | |
4340 | dcmd->cmd_status = 0x0; | |
4341 | dcmd->sge_count = 0; | |
4342 | dcmd->flags = MFI_FRAME_DIR_NONE; | |
4343 | dcmd->timeout = 0; | |
780a3762 | 4344 | dcmd->pad_0 = 0; |
c4a3e0a5 | 4345 | dcmd->data_xfer_len = 0; |
31ea7088 | 4346 | dcmd->opcode = opcode; |
c4a3e0a5 BS |
4347 | |
4348 | megasas_issue_blocked_cmd(instance, cmd); | |
4349 | ||
4350 | megasas_return_cmd(instance, cmd); | |
4351 | ||
4352 | return; | |
4353 | } | |
4354 | ||
33139b21 | 4355 | #ifdef CONFIG_PM |
31ea7088 | 4356 | /** |
ad84db2e | 4357 | * megasas_suspend - driver suspend entry point |
4358 | * @pdev: PCI device structure | |
31ea7088 | 4359 | * @state: PCI power state to suspend routine |
4360 | */ | |
33139b21 | 4361 | static int |
31ea7088 | 4362 | megasas_suspend(struct pci_dev *pdev, pm_message_t state) |
4363 | { | |
4364 | struct Scsi_Host *host; | |
4365 | struct megasas_instance *instance; | |
c8e858fe | 4366 | int i; |
31ea7088 | 4367 | |
4368 | instance = pci_get_drvdata(pdev); | |
4369 | host = instance->host; | |
0c79e681 | 4370 | instance->unload = 1; |
31ea7088 | 4371 | |
ad84db2e | 4372 | if (poll_mode_io) |
4373 | del_timer_sync(&instance->io_completion_timer); | |
4374 | ||
31ea7088 | 4375 | megasas_flush_cache(instance); |
4376 | megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN); | |
7e8a75f4 YB |
4377 | |
4378 | /* cancel the delayed work if this work still in queue */ | |
4379 | if (instance->ev != NULL) { | |
4380 | struct megasas_aen_event *ev = instance->ev; | |
a684b8da | 4381 | cancel_delayed_work_sync( |
7e8a75f4 | 4382 | (struct delayed_work *)&ev->hotplug_work); |
7e8a75f4 YB |
4383 | instance->ev = NULL; |
4384 | } | |
4385 | ||
31ea7088 | 4386 | tasklet_kill(&instance->isr_tasklet); |
4387 | ||
4388 | pci_set_drvdata(instance->pdev, instance); | |
4389 | instance->instancet->disable_intr(instance->reg_set); | |
c8e858fe | 4390 | |
4391 | if (instance->msix_vectors) | |
4392 | for (i = 0 ; i < instance->msix_vectors; i++) | |
4393 | free_irq(instance->msixentry[i].vector, | |
4394 | &instance->irq_context[i]); | |
4395 | else | |
4396 | free_irq(instance->pdev->irq, &instance->irq_context[0]); | |
4397 | if (instance->msix_vectors) | |
80d9da98 | 4398 | pci_disable_msix(instance->pdev); |
31ea7088 | 4399 | |
4400 | pci_save_state(pdev); | |
4401 | pci_disable_device(pdev); | |
4402 | ||
4403 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4404 | ||
4405 | return 0; | |
4406 | } | |
4407 | ||
4408 | /** | |
4409 | * megasas_resume- driver resume entry point | |
4410 | * @pdev: PCI device structure | |
4411 | */ | |
33139b21 | 4412 | static int |
31ea7088 | 4413 | megasas_resume(struct pci_dev *pdev) |
4414 | { | |
c8e858fe | 4415 | int rval, i, j; |
31ea7088 | 4416 | struct Scsi_Host *host; |
4417 | struct megasas_instance *instance; | |
4418 | ||
4419 | instance = pci_get_drvdata(pdev); | |
4420 | host = instance->host; | |
4421 | pci_set_power_state(pdev, PCI_D0); | |
4422 | pci_enable_wake(pdev, PCI_D0, 0); | |
4423 | pci_restore_state(pdev); | |
4424 | ||
4425 | /* | |
4426 | * PCI prepping: enable device set bus mastering and dma mask | |
4427 | */ | |
aeab3fd7 | 4428 | rval = pci_enable_device_mem(pdev); |
31ea7088 | 4429 | |
4430 | if (rval) { | |
4431 | printk(KERN_ERR "megasas: Enable device failed\n"); | |
4432 | return rval; | |
4433 | } | |
4434 | ||
4435 | pci_set_master(pdev); | |
4436 | ||
4437 | if (megasas_set_dma_mask(pdev)) | |
4438 | goto fail_set_dma_mask; | |
4439 | ||
4440 | /* | |
4441 | * Initialize MFI Firmware | |
4442 | */ | |
4443 | ||
31ea7088 | 4444 | atomic_set(&instance->fw_outstanding, 0); |
4445 | ||
4446 | /* | |
4447 | * We expect the FW state to be READY | |
4448 | */ | |
058a8fac | 4449 | if (megasas_transition_to_ready(instance, 0)) |
31ea7088 | 4450 | goto fail_ready_state; |
4451 | ||
3f1abce4 | 4452 | /* Now re-enable MSI-X */ |
c8e858fe | 4453 | if (instance->msix_vectors) |
4454 | pci_enable_msix(instance->pdev, instance->msixentry, | |
4455 | instance->msix_vectors); | |
3f1abce4 | 4456 | |
9c915a8c | 4457 | switch (instance->pdev->device) { |
4458 | case PCI_DEVICE_ID_LSI_FUSION: | |
36807e67 | 4459 | case PCI_DEVICE_ID_LSI_INVADER: |
9c915a8c | 4460 | { |
4461 | megasas_reset_reply_desc(instance); | |
4462 | if (megasas_ioc_init_fusion(instance)) { | |
4463 | megasas_free_cmds(instance); | |
4464 | megasas_free_cmds_fusion(instance); | |
4465 | goto fail_init_mfi; | |
4466 | } | |
4467 | if (!megasas_get_map_info(instance)) | |
4468 | megasas_sync_map_info(instance); | |
4469 | } | |
4470 | break; | |
4471 | default: | |
4472 | *instance->producer = 0; | |
4473 | *instance->consumer = 0; | |
4474 | if (megasas_issue_init_mfi(instance)) | |
4475 | goto fail_init_mfi; | |
4476 | break; | |
4477 | } | |
31ea7088 | 4478 | |
9c915a8c | 4479 | tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet, |
4480 | (unsigned long)instance); | |
31ea7088 | 4481 | |
4482 | /* | |
4483 | * Register IRQ | |
4484 | */ | |
c8e858fe | 4485 | if (instance->msix_vectors) { |
4486 | for (i = 0 ; i < instance->msix_vectors; i++) { | |
4487 | instance->irq_context[i].instance = instance; | |
4488 | instance->irq_context[i].MSIxIndex = i; | |
4489 | if (request_irq(instance->msixentry[i].vector, | |
4490 | instance->instancet->service_isr, 0, | |
4491 | "megasas", | |
4492 | &instance->irq_context[i])) { | |
4493 | printk(KERN_DEBUG "megasas: Failed to " | |
4494 | "register IRQ for vector %d.\n", i); | |
4495 | for (j = 0 ; j < i ; j++) | |
4496 | free_irq( | |
4497 | instance->msixentry[j].vector, | |
4498 | &instance->irq_context[j]); | |
4499 | goto fail_irq; | |
4500 | } | |
4501 | } | |
4502 | } else { | |
4503 | instance->irq_context[0].instance = instance; | |
4504 | instance->irq_context[0].MSIxIndex = 0; | |
4505 | if (request_irq(pdev->irq, instance->instancet->service_isr, | |
4506 | IRQF_SHARED, "megasas", | |
4507 | &instance->irq_context[0])) { | |
4508 | printk(KERN_DEBUG "megasas: Failed to register IRQ\n"); | |
4509 | goto fail_irq; | |
4510 | } | |
31ea7088 | 4511 | } |
4512 | ||
4513 | instance->instancet->enable_intr(instance->reg_set); | |
4514 | ||
ad84db2e | 4515 | /* Initialize the cmd completion timer */ |
4516 | if (poll_mode_io) | |
4517 | megasas_start_timer(instance, &instance->io_completion_timer, | |
4518 | megasas_io_completion_timer, | |
4519 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
0c79e681 YB |
4520 | instance->unload = 0; |
4521 | ||
541f90b7 | 4522 | /* |
4523 | * Initiate AEN (Asynchronous Event Notification) | |
4524 | */ | |
4525 | if (megasas_start_aen(instance)) | |
4526 | printk(KERN_ERR "megasas: Start AEN failed\n"); | |
4527 | ||
31ea7088 | 4528 | return 0; |
4529 | ||
4530 | fail_irq: | |
4531 | fail_init_mfi: | |
4532 | if (instance->evt_detail) | |
4533 | pci_free_consistent(pdev, sizeof(struct megasas_evt_detail), | |
4534 | instance->evt_detail, | |
4535 | instance->evt_detail_h); | |
4536 | ||
4537 | if (instance->producer) | |
4538 | pci_free_consistent(pdev, sizeof(u32), instance->producer, | |
4539 | instance->producer_h); | |
4540 | if (instance->consumer) | |
4541 | pci_free_consistent(pdev, sizeof(u32), instance->consumer, | |
4542 | instance->consumer_h); | |
4543 | scsi_host_put(host); | |
4544 | ||
4545 | fail_set_dma_mask: | |
4546 | fail_ready_state: | |
4547 | ||
4548 | pci_disable_device(pdev); | |
4549 | ||
4550 | return -ENODEV; | |
4551 | } | |
33139b21 JS |
4552 | #else |
4553 | #define megasas_suspend NULL | |
4554 | #define megasas_resume NULL | |
4555 | #endif | |
31ea7088 | 4556 | |
c4a3e0a5 BS |
4557 | /** |
4558 | * megasas_detach_one - PCI hot"un"plug entry point | |
4559 | * @pdev: PCI device structure | |
4560 | */ | |
33139b21 | 4561 | static void __devexit megasas_detach_one(struct pci_dev *pdev) |
c4a3e0a5 BS |
4562 | { |
4563 | int i; | |
4564 | struct Scsi_Host *host; | |
4565 | struct megasas_instance *instance; | |
9c915a8c | 4566 | struct fusion_context *fusion; |
c4a3e0a5 BS |
4567 | |
4568 | instance = pci_get_drvdata(pdev); | |
c3518837 | 4569 | instance->unload = 1; |
c4a3e0a5 | 4570 | host = instance->host; |
9c915a8c | 4571 | fusion = instance->ctrl_context; |
c4a3e0a5 | 4572 | |
ad84db2e | 4573 | if (poll_mode_io) |
4574 | del_timer_sync(&instance->io_completion_timer); | |
4575 | ||
c4a3e0a5 BS |
4576 | scsi_remove_host(instance->host); |
4577 | megasas_flush_cache(instance); | |
31ea7088 | 4578 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
7e8a75f4 YB |
4579 | |
4580 | /* cancel the delayed work if this work still in queue*/ | |
4581 | if (instance->ev != NULL) { | |
4582 | struct megasas_aen_event *ev = instance->ev; | |
a684b8da | 4583 | cancel_delayed_work_sync( |
7e8a75f4 | 4584 | (struct delayed_work *)&ev->hotplug_work); |
7e8a75f4 YB |
4585 | instance->ev = NULL; |
4586 | } | |
4587 | ||
5d018ad0 | 4588 | tasklet_kill(&instance->isr_tasklet); |
c4a3e0a5 BS |
4589 | |
4590 | /* | |
4591 | * Take the instance off the instance array. Note that we will not | |
4592 | * decrement the max_index. We let this array be sparse array | |
4593 | */ | |
4594 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
4595 | if (megasas_mgmt_info.instance[i] == instance) { | |
4596 | megasas_mgmt_info.count--; | |
4597 | megasas_mgmt_info.instance[i] = NULL; | |
4598 | ||
4599 | break; | |
4600 | } | |
4601 | } | |
4602 | ||
4603 | pci_set_drvdata(instance->pdev, NULL); | |
4604 | ||
b274cab7 | 4605 | instance->instancet->disable_intr(instance->reg_set); |
c4a3e0a5 | 4606 | |
c8e858fe | 4607 | if (instance->msix_vectors) |
4608 | for (i = 0 ; i < instance->msix_vectors; i++) | |
4609 | free_irq(instance->msixentry[i].vector, | |
4610 | &instance->irq_context[i]); | |
4611 | else | |
4612 | free_irq(instance->pdev->irq, &instance->irq_context[0]); | |
4613 | if (instance->msix_vectors) | |
80d9da98 | 4614 | pci_disable_msix(instance->pdev); |
c4a3e0a5 | 4615 | |
9c915a8c | 4616 | switch (instance->pdev->device) { |
4617 | case PCI_DEVICE_ID_LSI_FUSION: | |
36807e67 | 4618 | case PCI_DEVICE_ID_LSI_INVADER: |
9c915a8c | 4619 | megasas_release_fusion(instance); |
4620 | for (i = 0; i < 2 ; i++) | |
4621 | if (fusion->ld_map[i]) | |
4622 | dma_free_coherent(&instance->pdev->dev, | |
4623 | fusion->map_sz, | |
4624 | fusion->ld_map[i], | |
4625 | fusion-> | |
4626 | ld_map_phys[i]); | |
4627 | kfree(instance->ctrl_context); | |
4628 | break; | |
4629 | default: | |
4630 | megasas_release_mfi(instance); | |
4631 | pci_free_consistent(pdev, | |
4632 | sizeof(struct megasas_evt_detail), | |
4633 | instance->evt_detail, | |
4634 | instance->evt_detail_h); | |
4635 | pci_free_consistent(pdev, sizeof(u32), | |
4636 | instance->producer, | |
4637 | instance->producer_h); | |
4638 | pci_free_consistent(pdev, sizeof(u32), | |
4639 | instance->consumer, | |
4640 | instance->consumer_h); | |
4641 | break; | |
4642 | } | |
c4a3e0a5 BS |
4643 | |
4644 | scsi_host_put(host); | |
4645 | ||
4646 | pci_set_drvdata(pdev, NULL); | |
4647 | ||
4648 | pci_disable_device(pdev); | |
4649 | ||
4650 | return; | |
4651 | } | |
4652 | ||
4653 | /** | |
4654 | * megasas_shutdown - Shutdown entry point | |
4655 | * @device: Generic device structure | |
4656 | */ | |
4657 | static void megasas_shutdown(struct pci_dev *pdev) | |
4658 | { | |
c8e858fe | 4659 | int i; |
c4a3e0a5 | 4660 | struct megasas_instance *instance = pci_get_drvdata(pdev); |
c8e858fe | 4661 | |
0c79e681 | 4662 | instance->unload = 1; |
c4a3e0a5 | 4663 | megasas_flush_cache(instance); |
530e6fc1 | 4664 | megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN); |
46fd256e | 4665 | instance->instancet->disable_intr(instance->reg_set); |
c8e858fe | 4666 | if (instance->msix_vectors) |
4667 | for (i = 0 ; i < instance->msix_vectors; i++) | |
4668 | free_irq(instance->msixentry[i].vector, | |
4669 | &instance->irq_context[i]); | |
4670 | else | |
4671 | free_irq(instance->pdev->irq, &instance->irq_context[0]); | |
4672 | if (instance->msix_vectors) | |
46fd256e | 4673 | pci_disable_msix(instance->pdev); |
c4a3e0a5 BS |
4674 | } |
4675 | ||
4676 | /** | |
4677 | * megasas_mgmt_open - char node "open" entry point | |
4678 | */ | |
4679 | static int megasas_mgmt_open(struct inode *inode, struct file *filep) | |
4680 | { | |
4681 | /* | |
4682 | * Allow only those users with admin rights | |
4683 | */ | |
4684 | if (!capable(CAP_SYS_ADMIN)) | |
4685 | return -EACCES; | |
4686 | ||
4687 | return 0; | |
4688 | } | |
4689 | ||
c4a3e0a5 BS |
4690 | /** |
4691 | * megasas_mgmt_fasync - Async notifier registration from applications | |
4692 | * | |
4693 | * This function adds the calling process to a driver global queue. When an | |
4694 | * event occurs, SIGIO will be sent to all processes in this queue. | |
4695 | */ | |
4696 | static int megasas_mgmt_fasync(int fd, struct file *filep, int mode) | |
4697 | { | |
4698 | int rc; | |
4699 | ||
0b950672 | 4700 | mutex_lock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
4701 | |
4702 | rc = fasync_helper(fd, filep, mode, &megasas_async_queue); | |
4703 | ||
0b950672 | 4704 | mutex_unlock(&megasas_async_queue_mutex); |
c4a3e0a5 BS |
4705 | |
4706 | if (rc >= 0) { | |
4707 | /* For sanity check when we get ioctl */ | |
4708 | filep->private_data = filep; | |
4709 | return 0; | |
4710 | } | |
4711 | ||
4712 | printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc); | |
4713 | ||
4714 | return rc; | |
4715 | } | |
4716 | ||
c3518837 YB |
4717 | /** |
4718 | * megasas_mgmt_poll - char node "poll" entry point | |
4719 | * */ | |
4720 | static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait) | |
4721 | { | |
4722 | unsigned int mask; | |
4723 | unsigned long flags; | |
4724 | poll_wait(file, &megasas_poll_wait, wait); | |
4725 | spin_lock_irqsave(&poll_aen_lock, flags); | |
4726 | if (megasas_poll_wait_aen) | |
4727 | mask = (POLLIN | POLLRDNORM); | |
4728 | else | |
4729 | mask = 0; | |
4730 | spin_unlock_irqrestore(&poll_aen_lock, flags); | |
4731 | return mask; | |
4732 | } | |
4733 | ||
c4a3e0a5 BS |
4734 | /** |
4735 | * megasas_mgmt_fw_ioctl - Issues management ioctls to FW | |
4736 | * @instance: Adapter soft state | |
4737 | * @argp: User's ioctl packet | |
4738 | */ | |
4739 | static int | |
4740 | megasas_mgmt_fw_ioctl(struct megasas_instance *instance, | |
4741 | struct megasas_iocpacket __user * user_ioc, | |
4742 | struct megasas_iocpacket *ioc) | |
4743 | { | |
4744 | struct megasas_sge32 *kern_sge32; | |
4745 | struct megasas_cmd *cmd; | |
4746 | void *kbuff_arr[MAX_IOCTL_SGE]; | |
4747 | dma_addr_t buf_handle = 0; | |
4748 | int error = 0, i; | |
4749 | void *sense = NULL; | |
4750 | dma_addr_t sense_handle; | |
7b2519af | 4751 | unsigned long *sense_ptr; |
c4a3e0a5 BS |
4752 | |
4753 | memset(kbuff_arr, 0, sizeof(kbuff_arr)); | |
4754 | ||
4755 | if (ioc->sge_count > MAX_IOCTL_SGE) { | |
4756 | printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n", | |
4757 | ioc->sge_count, MAX_IOCTL_SGE); | |
4758 | return -EINVAL; | |
4759 | } | |
4760 | ||
4761 | cmd = megasas_get_cmd(instance); | |
4762 | if (!cmd) { | |
4763 | printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n"); | |
4764 | return -ENOMEM; | |
4765 | } | |
4766 | ||
4767 | /* | |
4768 | * User's IOCTL packet has 2 frames (maximum). Copy those two | |
4769 | * frames into our cmd's frames. cmd->frame's context will get | |
4770 | * overwritten when we copy from user's frames. So set that value | |
4771 | * alone separately | |
4772 | */ | |
4773 | memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE); | |
4774 | cmd->frame->hdr.context = cmd->index; | |
c3518837 | 4775 | cmd->frame->hdr.pad_0 = 0; |
c4a3e0a5 BS |
4776 | |
4777 | /* | |
4778 | * The management interface between applications and the fw uses | |
4779 | * MFI frames. E.g, RAID configuration changes, LD property changes | |
4780 | * etc are accomplishes through different kinds of MFI frames. The | |
4781 | * driver needs to care only about substituting user buffers with | |
4782 | * kernel buffers in SGLs. The location of SGL is embedded in the | |
4783 | * struct iocpacket itself. | |
4784 | */ | |
4785 | kern_sge32 = (struct megasas_sge32 *) | |
4786 | ((unsigned long)cmd->frame + ioc->sgl_off); | |
4787 | ||
4788 | /* | |
4789 | * For each user buffer, create a mirror buffer and copy in | |
4790 | */ | |
4791 | for (i = 0; i < ioc->sge_count; i++) { | |
98cb7e44 BM |
4792 | if (!ioc->sgl[i].iov_len) |
4793 | continue; | |
4794 | ||
9f35fa8a | 4795 | kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev, |
c4a3e0a5 | 4796 | ioc->sgl[i].iov_len, |
9f35fa8a | 4797 | &buf_handle, GFP_KERNEL); |
c4a3e0a5 BS |
4798 | if (!kbuff_arr[i]) { |
4799 | printk(KERN_DEBUG "megasas: Failed to alloc " | |
4800 | "kernel SGL buffer for IOCTL \n"); | |
4801 | error = -ENOMEM; | |
4802 | goto out; | |
4803 | } | |
4804 | ||
4805 | /* | |
4806 | * We don't change the dma_coherent_mask, so | |
4807 | * pci_alloc_consistent only returns 32bit addresses | |
4808 | */ | |
4809 | kern_sge32[i].phys_addr = (u32) buf_handle; | |
4810 | kern_sge32[i].length = ioc->sgl[i].iov_len; | |
4811 | ||
4812 | /* | |
4813 | * We created a kernel buffer corresponding to the | |
4814 | * user buffer. Now copy in from the user buffer | |
4815 | */ | |
4816 | if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base, | |
4817 | (u32) (ioc->sgl[i].iov_len))) { | |
4818 | error = -EFAULT; | |
4819 | goto out; | |
4820 | } | |
4821 | } | |
4822 | ||
4823 | if (ioc->sense_len) { | |
9f35fa8a SP |
4824 | sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len, |
4825 | &sense_handle, GFP_KERNEL); | |
c4a3e0a5 BS |
4826 | if (!sense) { |
4827 | error = -ENOMEM; | |
4828 | goto out; | |
4829 | } | |
4830 | ||
4831 | sense_ptr = | |
7b2519af | 4832 | (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off); |
c4a3e0a5 BS |
4833 | *sense_ptr = sense_handle; |
4834 | } | |
4835 | ||
4836 | /* | |
4837 | * Set the sync_cmd flag so that the ISR knows not to complete this | |
4838 | * cmd to the SCSI mid-layer | |
4839 | */ | |
4840 | cmd->sync_cmd = 1; | |
4841 | megasas_issue_blocked_cmd(instance, cmd); | |
4842 | cmd->sync_cmd = 0; | |
4843 | ||
4844 | /* | |
4845 | * copy out the kernel buffers to user buffers | |
4846 | */ | |
4847 | for (i = 0; i < ioc->sge_count; i++) { | |
4848 | if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i], | |
4849 | ioc->sgl[i].iov_len)) { | |
4850 | error = -EFAULT; | |
4851 | goto out; | |
4852 | } | |
4853 | } | |
4854 | ||
4855 | /* | |
4856 | * copy out the sense | |
4857 | */ | |
4858 | if (ioc->sense_len) { | |
4859 | /* | |
b70a41e0 | 4860 | * sense_ptr points to the location that has the user |
c4a3e0a5 BS |
4861 | * sense buffer address |
4862 | */ | |
7b2519af YB |
4863 | sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw + |
4864 | ioc->sense_off); | |
c4a3e0a5 | 4865 | |
b70a41e0 | 4866 | if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)), |
4867 | sense, ioc->sense_len)) { | |
b10c36a5 | 4868 | printk(KERN_ERR "megasas: Failed to copy out to user " |
4869 | "sense data\n"); | |
c4a3e0a5 BS |
4870 | error = -EFAULT; |
4871 | goto out; | |
4872 | } | |
4873 | } | |
4874 | ||
4875 | /* | |
4876 | * copy the status codes returned by the fw | |
4877 | */ | |
4878 | if (copy_to_user(&user_ioc->frame.hdr.cmd_status, | |
4879 | &cmd->frame->hdr.cmd_status, sizeof(u8))) { | |
4880 | printk(KERN_DEBUG "megasas: Error copying out cmd_status\n"); | |
4881 | error = -EFAULT; | |
4882 | } | |
4883 | ||
4884 | out: | |
4885 | if (sense) { | |
9f35fa8a | 4886 | dma_free_coherent(&instance->pdev->dev, ioc->sense_len, |
c4a3e0a5 BS |
4887 | sense, sense_handle); |
4888 | } | |
4889 | ||
4890 | for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { | |
9f35fa8a | 4891 | dma_free_coherent(&instance->pdev->dev, |
c4a3e0a5 BS |
4892 | kern_sge32[i].length, |
4893 | kbuff_arr[i], kern_sge32[i].phys_addr); | |
4894 | } | |
4895 | ||
4896 | megasas_return_cmd(instance, cmd); | |
4897 | return error; | |
4898 | } | |
4899 | ||
c4a3e0a5 BS |
4900 | static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg) |
4901 | { | |
4902 | struct megasas_iocpacket __user *user_ioc = | |
4903 | (struct megasas_iocpacket __user *)arg; | |
4904 | struct megasas_iocpacket *ioc; | |
4905 | struct megasas_instance *instance; | |
4906 | int error; | |
39a98554 | 4907 | int i; |
4908 | unsigned long flags; | |
4909 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; | |
c4a3e0a5 BS |
4910 | |
4911 | ioc = kmalloc(sizeof(*ioc), GFP_KERNEL); | |
4912 | if (!ioc) | |
4913 | return -ENOMEM; | |
4914 | ||
4915 | if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) { | |
4916 | error = -EFAULT; | |
4917 | goto out_kfree_ioc; | |
4918 | } | |
4919 | ||
4920 | instance = megasas_lookup_instance(ioc->host_no); | |
4921 | if (!instance) { | |
4922 | error = -ENODEV; | |
4923 | goto out_kfree_ioc; | |
4924 | } | |
4925 | ||
39a98554 | 4926 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
4927 | printk(KERN_ERR "Controller in crit error\n"); | |
0c79e681 YB |
4928 | error = -ENODEV; |
4929 | goto out_kfree_ioc; | |
4930 | } | |
4931 | ||
4932 | if (instance->unload == 1) { | |
4933 | error = -ENODEV; | |
4934 | goto out_kfree_ioc; | |
4935 | } | |
4936 | ||
c4a3e0a5 BS |
4937 | /* |
4938 | * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds | |
4939 | */ | |
4940 | if (down_interruptible(&instance->ioctl_sem)) { | |
4941 | error = -ERESTARTSYS; | |
4942 | goto out_kfree_ioc; | |
4943 | } | |
39a98554 | 4944 | |
4945 | for (i = 0; i < wait_time; i++) { | |
4946 | ||
4947 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4948 | if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { | |
4949 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4950 | break; | |
4951 | } | |
4952 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4953 | ||
4954 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
4955 | printk(KERN_NOTICE "megasas: waiting" | |
4956 | "for controller reset to finish\n"); | |
4957 | } | |
4958 | ||
4959 | msleep(1000); | |
4960 | } | |
4961 | ||
4962 | spin_lock_irqsave(&instance->hba_lock, flags); | |
4963 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
4964 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4965 | ||
4966 | printk(KERN_ERR "megaraid_sas: timed out while" | |
4967 | "waiting for HBA to recover\n"); | |
4968 | error = -ENODEV; | |
4969 | goto out_kfree_ioc; | |
4970 | } | |
4971 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
4972 | ||
c4a3e0a5 BS |
4973 | error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc); |
4974 | up(&instance->ioctl_sem); | |
4975 | ||
4976 | out_kfree_ioc: | |
4977 | kfree(ioc); | |
4978 | return error; | |
4979 | } | |
4980 | ||
4981 | static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg) | |
4982 | { | |
4983 | struct megasas_instance *instance; | |
4984 | struct megasas_aen aen; | |
4985 | int error; | |
39a98554 | 4986 | int i; |
4987 | unsigned long flags; | |
4988 | u32 wait_time = MEGASAS_RESET_WAIT_TIME; | |
c4a3e0a5 BS |
4989 | |
4990 | if (file->private_data != file) { | |
4991 | printk(KERN_DEBUG "megasas: fasync_helper was not " | |
4992 | "called first\n"); | |
4993 | return -EINVAL; | |
4994 | } | |
4995 | ||
4996 | if (copy_from_user(&aen, (void __user *)arg, sizeof(aen))) | |
4997 | return -EFAULT; | |
4998 | ||
4999 | instance = megasas_lookup_instance(aen.host_no); | |
5000 | ||
5001 | if (!instance) | |
5002 | return -ENODEV; | |
5003 | ||
39a98554 | 5004 | if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) { |
5005 | return -ENODEV; | |
0c79e681 YB |
5006 | } |
5007 | ||
5008 | if (instance->unload == 1) { | |
5009 | return -ENODEV; | |
5010 | } | |
5011 | ||
39a98554 | 5012 | for (i = 0; i < wait_time; i++) { |
5013 | ||
5014 | spin_lock_irqsave(&instance->hba_lock, flags); | |
5015 | if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) { | |
5016 | spin_unlock_irqrestore(&instance->hba_lock, | |
5017 | flags); | |
5018 | break; | |
5019 | } | |
5020 | ||
5021 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
5022 | ||
5023 | if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { | |
5024 | printk(KERN_NOTICE "megasas: waiting for" | |
5025 | "controller reset to finish\n"); | |
5026 | } | |
5027 | ||
5028 | msleep(1000); | |
5029 | } | |
5030 | ||
5031 | spin_lock_irqsave(&instance->hba_lock, flags); | |
5032 | if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) { | |
5033 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
5034 | printk(KERN_ERR "megaraid_sas: timed out while waiting" | |
5035 | "for HBA to recover.\n"); | |
5036 | return -ENODEV; | |
5037 | } | |
5038 | spin_unlock_irqrestore(&instance->hba_lock, flags); | |
5039 | ||
e5a69e27 | 5040 | mutex_lock(&instance->aen_mutex); |
c4a3e0a5 BS |
5041 | error = megasas_register_aen(instance, aen.seq_num, |
5042 | aen.class_locale_word); | |
e5a69e27 | 5043 | mutex_unlock(&instance->aen_mutex); |
c4a3e0a5 BS |
5044 | return error; |
5045 | } | |
5046 | ||
5047 | /** | |
5048 | * megasas_mgmt_ioctl - char node ioctl entry point | |
5049 | */ | |
5050 | static long | |
5051 | megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
5052 | { | |
5053 | switch (cmd) { | |
5054 | case MEGASAS_IOC_FIRMWARE: | |
5055 | return megasas_mgmt_ioctl_fw(file, arg); | |
5056 | ||
5057 | case MEGASAS_IOC_GET_AEN: | |
5058 | return megasas_mgmt_ioctl_aen(file, arg); | |
5059 | } | |
5060 | ||
5061 | return -ENOTTY; | |
5062 | } | |
5063 | ||
5064 | #ifdef CONFIG_COMPAT | |
5065 | static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg) | |
5066 | { | |
5067 | struct compat_megasas_iocpacket __user *cioc = | |
5068 | (struct compat_megasas_iocpacket __user *)arg; | |
5069 | struct megasas_iocpacket __user *ioc = | |
5070 | compat_alloc_user_space(sizeof(struct megasas_iocpacket)); | |
5071 | int i; | |
5072 | int error = 0; | |
b3dc1a21 | 5073 | compat_uptr_t ptr; |
c4a3e0a5 | 5074 | |
83aabc1b JG |
5075 | if (clear_user(ioc, sizeof(*ioc))) |
5076 | return -EFAULT; | |
c4a3e0a5 BS |
5077 | |
5078 | if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) || | |
5079 | copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) || | |
5080 | copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) || | |
5081 | copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) || | |
5082 | copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) || | |
5083 | copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32))) | |
5084 | return -EFAULT; | |
5085 | ||
b3dc1a21 TH |
5086 | /* |
5087 | * The sense_ptr is used in megasas_mgmt_fw_ioctl only when | |
5088 | * sense_len is not null, so prepare the 64bit value under | |
5089 | * the same condition. | |
5090 | */ | |
5091 | if (ioc->sense_len) { | |
5092 | void __user **sense_ioc_ptr = | |
5093 | (void __user **)(ioc->frame.raw + ioc->sense_off); | |
5094 | compat_uptr_t *sense_cioc_ptr = | |
5095 | (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off); | |
5096 | if (get_user(ptr, sense_cioc_ptr) || | |
5097 | put_user(compat_ptr(ptr), sense_ioc_ptr)) | |
5098 | return -EFAULT; | |
5099 | } | |
c4a3e0a5 | 5100 | |
b3dc1a21 | 5101 | for (i = 0; i < MAX_IOCTL_SGE; i++) { |
c4a3e0a5 BS |
5102 | if (get_user(ptr, &cioc->sgl[i].iov_base) || |
5103 | put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) || | |
5104 | copy_in_user(&ioc->sgl[i].iov_len, | |
5105 | &cioc->sgl[i].iov_len, sizeof(compat_size_t))) | |
5106 | return -EFAULT; | |
5107 | } | |
5108 | ||
5109 | error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc); | |
5110 | ||
5111 | if (copy_in_user(&cioc->frame.hdr.cmd_status, | |
5112 | &ioc->frame.hdr.cmd_status, sizeof(u8))) { | |
5113 | printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n"); | |
5114 | return -EFAULT; | |
5115 | } | |
5116 | return error; | |
5117 | } | |
5118 | ||
5119 | static long | |
5120 | megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd, | |
5121 | unsigned long arg) | |
5122 | { | |
5123 | switch (cmd) { | |
cb59aa6a SP |
5124 | case MEGASAS_IOC_FIRMWARE32: |
5125 | return megasas_mgmt_compat_ioctl_fw(file, arg); | |
c4a3e0a5 BS |
5126 | case MEGASAS_IOC_GET_AEN: |
5127 | return megasas_mgmt_ioctl_aen(file, arg); | |
5128 | } | |
5129 | ||
5130 | return -ENOTTY; | |
5131 | } | |
5132 | #endif | |
5133 | ||
5134 | /* | |
5135 | * File operations structure for management interface | |
5136 | */ | |
00977a59 | 5137 | static const struct file_operations megasas_mgmt_fops = { |
c4a3e0a5 BS |
5138 | .owner = THIS_MODULE, |
5139 | .open = megasas_mgmt_open, | |
c4a3e0a5 BS |
5140 | .fasync = megasas_mgmt_fasync, |
5141 | .unlocked_ioctl = megasas_mgmt_ioctl, | |
c3518837 | 5142 | .poll = megasas_mgmt_poll, |
c4a3e0a5 BS |
5143 | #ifdef CONFIG_COMPAT |
5144 | .compat_ioctl = megasas_mgmt_compat_ioctl, | |
5145 | #endif | |
6038f373 | 5146 | .llseek = noop_llseek, |
c4a3e0a5 BS |
5147 | }; |
5148 | ||
5149 | /* | |
5150 | * PCI hotplug support registration structure | |
5151 | */ | |
5152 | static struct pci_driver megasas_pci_driver = { | |
5153 | ||
5154 | .name = "megaraid_sas", | |
5155 | .id_table = megasas_pci_table, | |
5156 | .probe = megasas_probe_one, | |
5157 | .remove = __devexit_p(megasas_detach_one), | |
31ea7088 | 5158 | .suspend = megasas_suspend, |
5159 | .resume = megasas_resume, | |
c4a3e0a5 BS |
5160 | .shutdown = megasas_shutdown, |
5161 | }; | |
5162 | ||
5163 | /* | |
5164 | * Sysfs driver attributes | |
5165 | */ | |
5166 | static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf) | |
5167 | { | |
5168 | return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n", | |
5169 | MEGASAS_VERSION); | |
5170 | } | |
5171 | ||
5172 | static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL); | |
5173 | ||
5174 | static ssize_t | |
5175 | megasas_sysfs_show_release_date(struct device_driver *dd, char *buf) | |
5176 | { | |
5177 | return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n", | |
5178 | MEGASAS_RELDATE); | |
5179 | } | |
5180 | ||
5181 | static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, | |
5182 | NULL); | |
5183 | ||
72c4fd36 YB |
5184 | static ssize_t |
5185 | megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf) | |
5186 | { | |
5187 | return sprintf(buf, "%u\n", support_poll_for_event); | |
5188 | } | |
5189 | ||
5190 | static DRIVER_ATTR(support_poll_for_event, S_IRUGO, | |
5191 | megasas_sysfs_show_support_poll_for_event, NULL); | |
5192 | ||
837f5fe8 YB |
5193 | static ssize_t |
5194 | megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf) | |
5195 | { | |
5196 | return sprintf(buf, "%u\n", support_device_change); | |
5197 | } | |
5198 | ||
5199 | static DRIVER_ATTR(support_device_change, S_IRUGO, | |
5200 | megasas_sysfs_show_support_device_change, NULL); | |
5201 | ||
658dcedb SP |
5202 | static ssize_t |
5203 | megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf) | |
5204 | { | |
ad84db2e | 5205 | return sprintf(buf, "%u\n", megasas_dbg_lvl); |
658dcedb SP |
5206 | } |
5207 | ||
5208 | static ssize_t | |
5209 | megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count) | |
5210 | { | |
5211 | int retval = count; | |
5212 | if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){ | |
5213 | printk(KERN_ERR "megasas: could not set dbg_lvl\n"); | |
5214 | retval = -EINVAL; | |
5215 | } | |
5216 | return retval; | |
5217 | } | |
5218 | ||
66dca9b8 | 5219 | static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl, |
ad84db2e | 5220 | megasas_sysfs_set_dbg_lvl); |
5221 | ||
5222 | static ssize_t | |
5223 | megasas_sysfs_show_poll_mode_io(struct device_driver *dd, char *buf) | |
5224 | { | |
5225 | return sprintf(buf, "%u\n", poll_mode_io); | |
5226 | } | |
5227 | ||
5228 | static ssize_t | |
5229 | megasas_sysfs_set_poll_mode_io(struct device_driver *dd, | |
5230 | const char *buf, size_t count) | |
5231 | { | |
5232 | int retval = count; | |
5233 | int tmp = poll_mode_io; | |
5234 | int i; | |
5235 | struct megasas_instance *instance; | |
5236 | ||
5237 | if (sscanf(buf, "%u", &poll_mode_io) < 1) { | |
5238 | printk(KERN_ERR "megasas: could not set poll_mode_io\n"); | |
5239 | retval = -EINVAL; | |
5240 | } | |
5241 | ||
5242 | /* | |
5243 | * Check if poll_mode_io is already set or is same as previous value | |
5244 | */ | |
5245 | if ((tmp && poll_mode_io) || (tmp == poll_mode_io)) | |
5246 | goto out; | |
5247 | ||
5248 | if (poll_mode_io) { | |
5249 | /* | |
5250 | * Start timers for all adapters | |
5251 | */ | |
5252 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
5253 | instance = megasas_mgmt_info.instance[i]; | |
5254 | if (instance) { | |
5255 | megasas_start_timer(instance, | |
5256 | &instance->io_completion_timer, | |
5257 | megasas_io_completion_timer, | |
5258 | MEGASAS_COMPLETION_TIMER_INTERVAL); | |
5259 | } | |
5260 | } | |
5261 | } else { | |
5262 | /* | |
5263 | * Delete timers for all adapters | |
5264 | */ | |
5265 | for (i = 0; i < megasas_mgmt_info.max_index; i++) { | |
5266 | instance = megasas_mgmt_info.instance[i]; | |
5267 | if (instance) | |
5268 | del_timer_sync(&instance->io_completion_timer); | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | out: | |
5273 | return retval; | |
5274 | } | |
5275 | ||
7e8a75f4 YB |
5276 | static void |
5277 | megasas_aen_polling(struct work_struct *work) | |
5278 | { | |
5279 | struct megasas_aen_event *ev = | |
5280 | container_of(work, struct megasas_aen_event, hotplug_work); | |
5281 | struct megasas_instance *instance = ev->instance; | |
5282 | union megasas_evt_class_locale class_locale; | |
5283 | struct Scsi_Host *host; | |
5284 | struct scsi_device *sdev1; | |
5285 | u16 pd_index = 0; | |
c9786842 | 5286 | u16 ld_index = 0; |
7e8a75f4 YB |
5287 | int i, j, doscan = 0; |
5288 | u32 seq_num; | |
5289 | int error; | |
5290 | ||
5291 | if (!instance) { | |
5292 | printk(KERN_ERR "invalid instance!\n"); | |
5293 | kfree(ev); | |
5294 | return; | |
5295 | } | |
5296 | instance->ev = NULL; | |
5297 | host = instance->host; | |
5298 | if (instance->evt_detail) { | |
5299 | ||
5300 | switch (instance->evt_detail->code) { | |
5301 | case MR_EVT_PD_INSERTED: | |
c9786842 YB |
5302 | if (megasas_get_pd_list(instance) == 0) { |
5303 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
5304 | for (j = 0; | |
5305 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
5306 | j++) { | |
5307 | ||
5308 | pd_index = | |
5309 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5310 | ||
5311 | sdev1 = | |
5312 | scsi_device_lookup(host, i, j, 0); | |
5313 | ||
5314 | if (instance->pd_list[pd_index].driveState | |
5315 | == MR_PD_STATE_SYSTEM) { | |
5316 | if (!sdev1) { | |
5317 | scsi_add_device(host, i, j, 0); | |
5318 | } | |
5319 | ||
5320 | if (sdev1) | |
5321 | scsi_device_put(sdev1); | |
5322 | } | |
5323 | } | |
5324 | } | |
5325 | } | |
5326 | doscan = 0; | |
5327 | break; | |
5328 | ||
7e8a75f4 | 5329 | case MR_EVT_PD_REMOVED: |
c9786842 YB |
5330 | if (megasas_get_pd_list(instance) == 0) { |
5331 | megasas_get_pd_list(instance); | |
5332 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
5333 | for (j = 0; | |
5334 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
5335 | j++) { | |
5336 | ||
5337 | pd_index = | |
5338 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5339 | ||
5340 | sdev1 = | |
5341 | scsi_device_lookup(host, i, j, 0); | |
5342 | ||
5343 | if (instance->pd_list[pd_index].driveState | |
5344 | == MR_PD_STATE_SYSTEM) { | |
5345 | if (sdev1) { | |
5346 | scsi_device_put(sdev1); | |
5347 | } | |
5348 | } else { | |
5349 | if (sdev1) { | |
5350 | scsi_remove_device(sdev1); | |
5351 | scsi_device_put(sdev1); | |
5352 | } | |
5353 | } | |
5354 | } | |
5355 | } | |
5356 | } | |
5357 | doscan = 0; | |
5358 | break; | |
5359 | ||
5360 | case MR_EVT_LD_OFFLINE: | |
4c598b23 | 5361 | case MR_EVT_CFG_CLEARED: |
c9786842 YB |
5362 | case MR_EVT_LD_DELETED: |
5363 | megasas_get_ld_list(instance); | |
5364 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
5365 | for (j = 0; | |
5366 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
5367 | j++) { | |
5368 | ||
5369 | ld_index = | |
5370 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5371 | ||
5372 | sdev1 = scsi_device_lookup(host, | |
5373 | i + MEGASAS_MAX_LD_CHANNELS, | |
5374 | j, | |
5375 | 0); | |
5376 | ||
5377 | if (instance->ld_ids[ld_index] != 0xff) { | |
5378 | if (sdev1) { | |
5379 | scsi_device_put(sdev1); | |
5380 | } | |
5381 | } else { | |
5382 | if (sdev1) { | |
5383 | scsi_remove_device(sdev1); | |
5384 | scsi_device_put(sdev1); | |
5385 | } | |
5386 | } | |
5387 | } | |
5388 | } | |
5389 | doscan = 0; | |
5390 | break; | |
5391 | case MR_EVT_LD_CREATED: | |
5392 | megasas_get_ld_list(instance); | |
5393 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
5394 | for (j = 0; | |
5395 | j < MEGASAS_MAX_DEV_PER_CHANNEL; | |
5396 | j++) { | |
5397 | ld_index = | |
5398 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5399 | ||
5400 | sdev1 = scsi_device_lookup(host, | |
5401 | i+MEGASAS_MAX_LD_CHANNELS, | |
5402 | j, 0); | |
5403 | ||
5404 | if (instance->ld_ids[ld_index] != | |
5405 | 0xff) { | |
5406 | if (!sdev1) { | |
5407 | scsi_add_device(host, | |
5408 | i + 2, | |
5409 | j, 0); | |
5410 | } | |
5411 | } | |
5412 | if (sdev1) { | |
5413 | scsi_device_put(sdev1); | |
5414 | } | |
5415 | } | |
5416 | } | |
5417 | doscan = 0; | |
5418 | break; | |
7e8a75f4 | 5419 | case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED: |
c9786842 | 5420 | case MR_EVT_FOREIGN_CFG_IMPORTED: |
9c915a8c | 5421 | case MR_EVT_LD_STATE_CHANGE: |
7e8a75f4 YB |
5422 | doscan = 1; |
5423 | break; | |
5424 | default: | |
5425 | doscan = 0; | |
5426 | break; | |
5427 | } | |
5428 | } else { | |
5429 | printk(KERN_ERR "invalid evt_detail!\n"); | |
5430 | kfree(ev); | |
5431 | return; | |
5432 | } | |
5433 | ||
5434 | if (doscan) { | |
5435 | printk(KERN_INFO "scanning ...\n"); | |
5436 | megasas_get_pd_list(instance); | |
5437 | for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) { | |
5438 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
5439 | pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j; | |
5440 | sdev1 = scsi_device_lookup(host, i, j, 0); | |
5441 | if (instance->pd_list[pd_index].driveState == | |
5442 | MR_PD_STATE_SYSTEM) { | |
5443 | if (!sdev1) { | |
5444 | scsi_add_device(host, i, j, 0); | |
5445 | } | |
5446 | if (sdev1) | |
5447 | scsi_device_put(sdev1); | |
5448 | } else { | |
5449 | if (sdev1) { | |
5450 | scsi_remove_device(sdev1); | |
5451 | scsi_device_put(sdev1); | |
5452 | } | |
5453 | } | |
5454 | } | |
5455 | } | |
c9786842 YB |
5456 | |
5457 | megasas_get_ld_list(instance); | |
5458 | for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) { | |
5459 | for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) { | |
5460 | ld_index = | |
5461 | (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j; | |
5462 | ||
5463 | sdev1 = scsi_device_lookup(host, | |
5464 | i+MEGASAS_MAX_LD_CHANNELS, j, 0); | |
5465 | if (instance->ld_ids[ld_index] != 0xff) { | |
5466 | if (!sdev1) { | |
5467 | scsi_add_device(host, | |
5468 | i+2, | |
5469 | j, 0); | |
5470 | } else { | |
5471 | scsi_device_put(sdev1); | |
5472 | } | |
5473 | } else { | |
5474 | if (sdev1) { | |
5475 | scsi_remove_device(sdev1); | |
5476 | scsi_device_put(sdev1); | |
5477 | } | |
5478 | } | |
5479 | } | |
5480 | } | |
7e8a75f4 YB |
5481 | } |
5482 | ||
5483 | if ( instance->aen_cmd != NULL ) { | |
5484 | kfree(ev); | |
5485 | return ; | |
5486 | } | |
5487 | ||
5488 | seq_num = instance->evt_detail->seq_num + 1; | |
5489 | ||
5490 | /* Register AEN with FW for latest sequence number plus 1 */ | |
5491 | class_locale.members.reserved = 0; | |
5492 | class_locale.members.locale = MR_EVT_LOCALE_ALL; | |
5493 | class_locale.members.class = MR_EVT_CLASS_DEBUG; | |
5494 | mutex_lock(&instance->aen_mutex); | |
5495 | error = megasas_register_aen(instance, seq_num, | |
5496 | class_locale.word); | |
5497 | mutex_unlock(&instance->aen_mutex); | |
5498 | ||
5499 | if (error) | |
5500 | printk(KERN_ERR "register aen failed error %x\n", error); | |
5501 | ||
5502 | kfree(ev); | |
5503 | } | |
5504 | ||
5505 | ||
bb7d3f24 | 5506 | static DRIVER_ATTR(poll_mode_io, S_IRUGO|S_IWUSR, |
ad84db2e | 5507 | megasas_sysfs_show_poll_mode_io, |
5508 | megasas_sysfs_set_poll_mode_io); | |
658dcedb | 5509 | |
c4a3e0a5 BS |
5510 | /** |
5511 | * megasas_init - Driver load entry point | |
5512 | */ | |
5513 | static int __init megasas_init(void) | |
5514 | { | |
5515 | int rval; | |
5516 | ||
5517 | /* | |
5518 | * Announce driver version and other information | |
5519 | */ | |
5520 | printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION, | |
5521 | MEGASAS_EXT_VERSION); | |
5522 | ||
72c4fd36 | 5523 | support_poll_for_event = 2; |
837f5fe8 | 5524 | support_device_change = 1; |
72c4fd36 | 5525 | |
c4a3e0a5 BS |
5526 | memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info)); |
5527 | ||
5528 | /* | |
5529 | * Register character device node | |
5530 | */ | |
5531 | rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops); | |
5532 | ||
5533 | if (rval < 0) { | |
5534 | printk(KERN_DEBUG "megasas: failed to open device node\n"); | |
5535 | return rval; | |
5536 | } | |
5537 | ||
5538 | megasas_mgmt_majorno = rval; | |
5539 | ||
5540 | /* | |
5541 | * Register ourselves as PCI hotplug module | |
5542 | */ | |
4041b9cd | 5543 | rval = pci_register_driver(&megasas_pci_driver); |
c4a3e0a5 BS |
5544 | |
5545 | if (rval) { | |
5546 | printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n"); | |
83aabc1b JG |
5547 | goto err_pcidrv; |
5548 | } | |
5549 | ||
5550 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5551 | &driver_attr_version); | |
5552 | if (rval) | |
5553 | goto err_dcf_attr_ver; | |
5554 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5555 | &driver_attr_release_date); | |
5556 | if (rval) | |
5557 | goto err_dcf_rel_date; | |
72c4fd36 YB |
5558 | |
5559 | rval = driver_create_file(&megasas_pci_driver.driver, | |
5560 | &driver_attr_support_poll_for_event); | |
5561 | if (rval) | |
5562 | goto err_dcf_support_poll_for_event; | |
5563 | ||
83aabc1b JG |
5564 | rval = driver_create_file(&megasas_pci_driver.driver, |
5565 | &driver_attr_dbg_lvl); | |
5566 | if (rval) | |
5567 | goto err_dcf_dbg_lvl; | |
ad84db2e | 5568 | rval = driver_create_file(&megasas_pci_driver.driver, |
5569 | &driver_attr_poll_mode_io); | |
5570 | if (rval) | |
5571 | goto err_dcf_poll_mode_io; | |
c4a3e0a5 | 5572 | |
837f5fe8 YB |
5573 | rval = driver_create_file(&megasas_pci_driver.driver, |
5574 | &driver_attr_support_device_change); | |
5575 | if (rval) | |
5576 | goto err_dcf_support_device_change; | |
5577 | ||
c4a3e0a5 | 5578 | return rval; |
ad84db2e | 5579 | |
837f5fe8 YB |
5580 | err_dcf_support_device_change: |
5581 | driver_remove_file(&megasas_pci_driver.driver, | |
5582 | &driver_attr_poll_mode_io); | |
5583 | ||
ad84db2e | 5584 | err_dcf_poll_mode_io: |
5585 | driver_remove_file(&megasas_pci_driver.driver, | |
5586 | &driver_attr_dbg_lvl); | |
83aabc1b | 5587 | err_dcf_dbg_lvl: |
72c4fd36 YB |
5588 | driver_remove_file(&megasas_pci_driver.driver, |
5589 | &driver_attr_support_poll_for_event); | |
5590 | ||
5591 | err_dcf_support_poll_for_event: | |
83aabc1b JG |
5592 | driver_remove_file(&megasas_pci_driver.driver, |
5593 | &driver_attr_release_date); | |
72c4fd36 | 5594 | |
83aabc1b JG |
5595 | err_dcf_rel_date: |
5596 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
5597 | err_dcf_attr_ver: | |
5598 | pci_unregister_driver(&megasas_pci_driver); | |
5599 | err_pcidrv: | |
5600 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
0d49016b | 5601 | return rval; |
c4a3e0a5 BS |
5602 | } |
5603 | ||
5604 | /** | |
5605 | * megasas_exit - Driver unload entry point | |
5606 | */ | |
5607 | static void __exit megasas_exit(void) | |
5608 | { | |
ad84db2e | 5609 | driver_remove_file(&megasas_pci_driver.driver, |
5610 | &driver_attr_poll_mode_io); | |
658dcedb SP |
5611 | driver_remove_file(&megasas_pci_driver.driver, |
5612 | &driver_attr_dbg_lvl); | |
837f5fe8 YB |
5613 | driver_remove_file(&megasas_pci_driver.driver, |
5614 | &driver_attr_support_poll_for_event); | |
5615 | driver_remove_file(&megasas_pci_driver.driver, | |
5616 | &driver_attr_support_device_change); | |
83aabc1b JG |
5617 | driver_remove_file(&megasas_pci_driver.driver, |
5618 | &driver_attr_release_date); | |
5619 | driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version); | |
c4a3e0a5 BS |
5620 | |
5621 | pci_unregister_driver(&megasas_pci_driver); | |
5622 | unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); | |
5623 | } | |
5624 | ||
5625 | module_init(megasas_init); | |
5626 | module_exit(megasas_exit); |