1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * |
4 | * Linux MegaRAID device driver |
5 | * |
6 | * Copyright (c) 2002 LSI Logic Corporation. |
7 | * |
8 | * Copyright (c) 2002 Red Hat, Inc. All rights reserved. |
9 | * - fixes |
10 | * - speed-ups (list handling fixes, issued_list, optimizations.) |
11 | * - lots of cleanups. |
12 | * |
13 | * Copyright (c) 2003 Christoph Hellwig <hch@lst.de> |
14 | * - new-style, hotplug-aware pci probing and scsi registration |
15 | * |
16 | * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju |
17 | * <Seokmann.Ju@lsil.com> |
18 | * |
19 | * Description: Linux device driver for LSI Logic MegaRAID controller |
20 | * |
21 | * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 |
22 | * 518, 520, 531, 532 |
23 | * |
24 | * This driver is supported by LSI Logic, with assistance from Red Hat, Dell, |
25 | * and others. Please send updates to the mailing list |
26 | * linux-scsi@vger.kernel.org . |
27 | */ |
28 | |
29 | #include <linux/mm.h> |
30 | #include <linux/fs.h> |
31 | #include <linux/blkdev.h> |
32 | #include <linux/uaccess.h> |
33 | #include <asm/io.h> |
34 | #include <linux/completion.h> |
35 | #include <linux/delay.h> |
36 | #include <linux/proc_fs.h> |
37 | #include <linux/seq_file.h> |
38 | #include <linux/reboot.h> |
39 | #include <linux/module.h> |
40 | #include <linux/list.h> |
41 | #include <linux/interrupt.h> |
42 | #include <linux/pci.h> |
43 | #include <linux/init.h> |
44 | #include <linux/dma-mapping.h> |
45 | #include <linux/mutex.h> |
46 | #include <linux/slab.h> |
47 | |
48 | #include <scsi/scsi.h> |
49 | #include <scsi/scsi_cmnd.h> |
50 | #include <scsi/scsi_device.h> |
51 | #include <scsi/scsi_eh.h> |
52 | #include <scsi/scsi_host.h> |
53 | #include <scsi/scsi_tcq.h> |
54 | #include <scsi/scsicam.h> |
55 | |
56 | #include "megaraid.h" |
57 | |
58 | #define MEGARAID_MODULE_VERSION "2.00.4" |
59 | |
60 | MODULE_AUTHOR ("sju@lsil.com" ); |
61 | MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver" ); |
62 | MODULE_LICENSE ("GPL" ); |
63 | MODULE_VERSION(MEGARAID_MODULE_VERSION); |
64 | |
65 | static DEFINE_MUTEX(megadev_mutex); |
66 | static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; |
67 | module_param(max_cmd_per_lun, uint, 0); |
68 | MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)" ); |
69 | |
70 | static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; |
71 | module_param(max_sectors_per_io, ushort, 0); |
72 | MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)" ); |
73 | |
74 | |
75 | static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; |
76 | module_param(max_mbox_busy_wait, ushort, 0); |
77 | MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)" ); |
78 | |
79 | #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) |
80 | #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) |
81 | #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) |
82 | #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) |
83 | |
84 | /* |
85 | * Global variables |
86 | */ |
87 | |
88 | static int hba_count; |
89 | static adapter_t *hba_soft_state[MAX_CONTROLLERS]; |
90 | static struct proc_dir_entry *mega_proc_dir_entry; |
91 | |
92 | /* For controller re-ordering */ |
93 | static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; |
94 | |
95 | static long |
96 | megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); |
97 | |
98 | /* |
99 | * The File Operations structure for the serial/ioctl interface of the driver |
100 | */ |
101 | static const struct file_operations megadev_fops = { |
102 | .owner = THIS_MODULE, |
103 | .unlocked_ioctl = megadev_unlocked_ioctl, |
104 | .open = megadev_open, |
105 | .llseek = noop_llseek, |
106 | }; |
107 | |
108 | /* |
109 | * Array to structures for storing the information about the controllers. This |
110 | * information is sent to the user level applications, when they do an ioctl |
111 | * for this information. |
112 | */ |
113 | static struct mcontroller mcontroller[MAX_CONTROLLERS]; |
114 | |
115 | /* The current driver version */ |
116 | static u32 driver_ver = 0x02000000; |
117 | |
118 | /* major number used by the device for character interface */ |
119 | static int major; |
120 | |
121 | #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) |
122 | |
123 | |
124 | /* |
125 | * Debug variable to print some diagnostic messages |
126 | */ |
127 | static int trace_level; |
128 | |
129 | /** |
130 | * mega_setup_mailbox() |
131 | * @adapter: pointer to our soft state |
132 | * |
133 | * Allocates a 8 byte aligned memory for the handshake mailbox. |
134 | */ |
135 | static int |
136 | mega_setup_mailbox(adapter_t *adapter) |
137 | { |
138 | unsigned long align; |
139 | |
140 | adapter->una_mbox64 = dma_alloc_coherent(dev: &adapter->dev->dev, |
141 | size: sizeof(mbox64_t), |
142 | dma_handle: &adapter->una_mbox64_dma, |
143 | GFP_KERNEL); |
144 | |
145 | if( !adapter->una_mbox64 ) return -1; |
146 | |
147 | adapter->mbox = &adapter->una_mbox64->mbox; |
148 | |
149 | adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & |
150 | (~0UL ^ 0xFUL)); |
151 | |
152 | adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); |
153 | |
154 | align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); |
155 | |
156 | adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; |
157 | |
158 | /* |
159 | * Register the mailbox if the controller is an io-mapped controller |
160 | */ |
161 | if( adapter->flag & BOARD_IOMAP ) { |
162 | |
163 | outb(value: adapter->mbox_dma & 0xFF, |
164 | port: adapter->host->io_port + MBOX_PORT0); |
165 | |
166 | outb(value: (adapter->mbox_dma >> 8) & 0xFF, |
167 | port: adapter->host->io_port + MBOX_PORT1); |
168 | |
169 | outb(value: (adapter->mbox_dma >> 16) & 0xFF, |
170 | port: adapter->host->io_port + MBOX_PORT2); |
171 | |
172 | outb(value: (adapter->mbox_dma >> 24) & 0xFF, |
173 | port: adapter->host->io_port + MBOX_PORT3); |
174 | |
175 | outb(ENABLE_MBOX_BYTE, |
176 | port: adapter->host->io_port + ENABLE_MBOX_REGION); |
177 | |
178 | irq_ack(adapter); |
179 | |
180 | irq_enable(adapter); |
181 | } |
182 | |
183 | return 0; |
184 | } |
185 | |
186 | |
187 | /* |
188 | * mega_query_adapter() |
189 | * @adapter - pointer to our soft state |
190 | * |
191 | * Issue the adapter inquiry commands to the controller and find out |
192 | * information and parameter about the devices attached |
193 | */ |
194 | static int |
195 | mega_query_adapter(adapter_t *adapter) |
196 | { |
197 | dma_addr_t prod_info_dma_handle; |
198 | mega_inquiry3 *inquiry3; |
199 | struct mbox_out mbox; |
200 | u8 *raw_mbox = (u8 *)&mbox; |
201 | int retval; |
202 | |
203 | /* Initialize adapter inquiry mailbox */ |
204 | |
205 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
206 | memset(&mbox, 0, sizeof(mbox)); |
207 | |
208 | /* |
209 | * Try to issue Inquiry3 command |
210 | * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and |
211 | * update enquiry3 structure |
212 | */ |
213 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
214 | |
215 | inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; |
216 | |
217 | raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ |
218 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ |
219 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ |
220 | |
221 | /* Issue a blocking command to the card */ |
222 | if ((retval = issue_scb_block(adapter, raw_mbox))) { |
223 | /* the adapter does not support 40ld */ |
224 | |
225 | mraid_ext_inquiry *ext_inq; |
226 | mraid_inquiry *inq; |
227 | dma_addr_t dma_handle; |
228 | |
229 | ext_inq = dma_alloc_coherent(dev: &adapter->dev->dev, |
230 | size: sizeof(mraid_ext_inquiry), |
231 | dma_handle: &dma_handle, GFP_KERNEL); |
232 | |
233 | if( ext_inq == NULL ) return -1; |
234 | |
235 | inq = &ext_inq->raid_inq; |
236 | |
237 | mbox.xferaddr = (u32)dma_handle; |
238 | |
239 | /*issue old 0x04 command to adapter */ |
240 | mbox.cmd = MEGA_MBOXCMD_ADPEXTINQ; |
241 | |
242 | issue_scb_block(adapter, raw_mbox); |
243 | |
244 | /* |
245 | * update Enquiry3 and ProductInfo structures with |
246 | * mraid_inquiry structure |
247 | */ |
248 | mega_8_to_40ld(inquiry: inq, enquiry3: inquiry3, |
249 | (mega_product_info *)&adapter->product_info); |
250 | |
251 | dma_free_coherent(dev: &adapter->dev->dev, |
252 | size: sizeof(mraid_ext_inquiry), cpu_addr: ext_inq, |
253 | dma_handle); |
254 | |
255 | } else { /*adapter supports 40ld */ |
256 | adapter->flag |= BOARD_40LD; |
257 | |
258 | /* |
259 | * get product_info, which is static information and will be |
260 | * unchanged |
261 | */ |
262 | prod_info_dma_handle = dma_map_single(&adapter->dev->dev, |
263 | (void *)&adapter->product_info, |
264 | sizeof(mega_product_info), |
265 | DMA_FROM_DEVICE); |
266 | |
267 | mbox.xferaddr = prod_info_dma_handle; |
268 | |
269 | raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ |
270 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ |
271 | |
272 | if ((retval = issue_scb_block(adapter, raw_mbox))) |
273 | dev_warn(&adapter->dev->dev, |
274 | "Product_info cmd failed with error: %d\n" , |
275 | retval); |
276 | |
277 | dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle, |
278 | sizeof(mega_product_info), DMA_FROM_DEVICE); |
279 | } |
280 | |
281 | |
282 | /* |
283 | * kernel scans the channels from 0 to <= max_channel |
284 | */ |
285 | adapter->host->max_channel = |
286 | adapter->product_info.nchannels + NVIRT_CHAN -1; |
287 | |
288 | adapter->host->max_id = 16; /* max targets per channel */ |
289 | |
290 | adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */ |
291 | |
292 | adapter->host->cmd_per_lun = max_cmd_per_lun; |
293 | |
294 | adapter->numldrv = inquiry3->num_ldrv; |
295 | |
296 | adapter->max_cmds = adapter->product_info.max_commands; |
297 | |
298 | if(adapter->max_cmds > MAX_COMMANDS) |
299 | adapter->max_cmds = MAX_COMMANDS; |
300 | |
301 | adapter->host->can_queue = adapter->max_cmds - 1; |
302 | |
303 | /* |
304 | * Get the maximum number of scatter-gather elements supported by this |
305 | * firmware |
306 | */ |
307 | mega_get_max_sgl(adapter); |
308 | |
309 | adapter->host->sg_tablesize = adapter->sglen; |
310 | |
311 | /* use HP firmware and bios version encoding |
312 | Note: fw_version[0|1] and bios_version[0|1] were originally shifted |
313 | right 8 bits making them zero. This 0 value was hardcoded to fix |
314 | sparse warnings. */ |
315 | if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { |
316 | snprintf(buf: adapter->fw_version, size: sizeof(adapter->fw_version), |
317 | fmt: "%c%d%d.%d%d" , |
318 | adapter->product_info.fw_version[2], |
319 | 0, |
320 | adapter->product_info.fw_version[1] & 0x0f, |
321 | 0, |
322 | adapter->product_info.fw_version[0] & 0x0f); |
323 | snprintf(buf: adapter->bios_version, size: sizeof(adapter->fw_version), |
324 | fmt: "%c%d%d.%d%d" , |
325 | adapter->product_info.bios_version[2], |
326 | 0, |
327 | adapter->product_info.bios_version[1] & 0x0f, |
328 | 0, |
329 | adapter->product_info.bios_version[0] & 0x0f); |
330 | } else { |
331 | memcpy(adapter->fw_version, |
332 | (char *)adapter->product_info.fw_version, 4); |
333 | adapter->fw_version[4] = 0; |
334 | |
335 | memcpy(adapter->bios_version, |
336 | (char *)adapter->product_info.bios_version, 4); |
337 | |
338 | adapter->bios_version[4] = 0; |
339 | } |
340 | |
341 | dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n" , |
342 | adapter->fw_version, adapter->bios_version, adapter->numldrv); |
343 | |
344 | /* |
345 | * Do we support extended (>10 bytes) cdbs |
346 | */ |
347 | adapter->support_ext_cdb = mega_support_ext_cdb(adapter); |
348 | if (adapter->support_ext_cdb) |
349 | dev_notice(&adapter->dev->dev, "supports extended CDBs\n" ); |
350 | |
351 | |
352 | return 0; |
353 | } |
354 | |
355 | /** |
356 | * mega_runpendq() |
357 | * @adapter: pointer to our soft state |
358 | * |
359 | * Runs through the list of pending requests. |
360 | */ |
361 | static inline void |
362 | mega_runpendq(adapter_t *adapter) |
363 | { |
364 | if(!list_empty(head: &adapter->pending_list)) |
365 | __mega_runpendq(adapter); |
366 | } |
367 | |
368 | /* |
369 | * megaraid_queue() |
370 | * @scmd - Issue this scsi command |
371 | * @done - the callback hook into the scsi mid-layer |
372 | * |
373 | * The command queuing entry point for the mid-layer. |
374 | */ |
375 | static int megaraid_queue_lck(struct scsi_cmnd *scmd) |
376 | { |
377 | adapter_t *adapter; |
378 | scb_t *scb; |
379 | int busy=0; |
380 | unsigned long flags; |
381 | |
382 | adapter = (adapter_t *)scmd->device->host->hostdata; |
383 | |
384 | /* |
385 | * Allocate and build a SCB request |
386 | * busy flag will be set if mega_build_cmd() command could not |
387 | * allocate scb. We will return non-zero status in that case. |
388 | * NOTE: scb can be null even though certain commands completed |
389 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would |
390 | * return 0 in that case. |
391 | */ |
392 | |
393 | spin_lock_irqsave(&adapter->lock, flags); |
394 | scb = mega_build_cmd(adapter, scmd, &busy); |
395 | if (!scb) |
396 | goto out; |
397 | |
398 | scb->state |= SCB_PENDQ; |
399 | list_add_tail(new: &scb->list, head: &adapter->pending_list); |
400 | |
401 | /* |
402 | * Check if the HBA is in quiescent state, e.g., during a |
403 | * delete logical drive opertion. If it is, don't run |
404 | * the pending_list. |
405 | */ |
406 | if (atomic_read(v: &adapter->quiescent) == 0) |
407 | mega_runpendq(adapter); |
408 | |
409 | busy = 0; |
410 | out: |
411 | spin_unlock_irqrestore(lock: &adapter->lock, flags); |
412 | return busy; |
413 | } |
414 | |
415 | static DEF_SCSI_QCMD(megaraid_queue) |
416 | |
417 | /** |
418 | * mega_allocate_scb() |
419 | * @adapter: pointer to our soft state |
420 | * @cmd: scsi command from the mid-layer |
421 | * |
422 | * Allocate a SCB structure. This is the central structure for controller |
423 | * commands. |
424 | */ |
425 | static inline scb_t * |
426 | mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd) |
427 | { |
428 | struct list_head *head = &adapter->free_list; |
429 | scb_t *scb; |
430 | |
431 | /* Unlink command from Free List */ |
432 | if( !list_empty(head) ) { |
433 | |
434 | scb = list_entry(head->next, scb_t, list); |
435 | |
436 | list_del_init(entry: head->next); |
437 | |
438 | scb->state = SCB_ACTIVE; |
439 | scb->cmd = cmd; |
440 | scb->dma_type = MEGA_DMA_TYPE_NONE; |
441 | |
442 | return scb; |
443 | } |
444 | |
445 | return NULL; |
446 | } |
447 | |
448 | /** |
449 | * mega_get_ldrv_num() |
450 | * @adapter: pointer to our soft state |
451 | * @cmd: scsi mid layer command |
452 | * @channel: channel on the controller |
453 | * |
454 | * Calculate the logical drive number based on the information in scsi command |
455 | * and the channel number. |
456 | */ |
457 | static inline int |
458 | mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel) |
459 | { |
460 | int tgt; |
461 | int ldrv_num; |
462 | |
463 | tgt = cmd->device->id; |
464 | |
465 | if ( tgt > adapter->this_id ) |
466 | tgt--; /* we do not get inquires for initiator id */ |
467 | |
468 | ldrv_num = (channel * 15) + tgt; |
469 | |
470 | |
471 | /* |
472 | * If we have a logical drive with boot enabled, project it first |
473 | */ |
474 | if( adapter->boot_ldrv_enabled ) { |
475 | if( ldrv_num == 0 ) { |
476 | ldrv_num = adapter->boot_ldrv; |
477 | } |
478 | else { |
479 | if( ldrv_num <= adapter->boot_ldrv ) { |
480 | ldrv_num--; |
481 | } |
482 | } |
483 | } |
484 | |
485 | /* |
486 | * If "delete logical drive" feature is enabled on this controller. |
487 | * Do only if at least one delete logical drive operation was done. |
488 | * |
489 | * Also, after logical drive deletion, instead of logical drive number, |
490 | * the value returned should be 0x80+logical drive id. |
491 | * |
492 | * These is valid only for IO commands. |
493 | */ |
494 | |
495 | if (adapter->support_random_del && adapter->read_ldidmap ) |
496 | switch (cmd->cmnd[0]) { |
497 | case READ_6: |
498 | case WRITE_6: |
499 | case READ_10: |
500 | case WRITE_10: |
501 | ldrv_num += 0x80; |
502 | } |
503 | |
504 | return ldrv_num; |
505 | } |
506 | |
507 | /** |
508 | * mega_build_cmd() |
509 | * @adapter: pointer to our soft state |
510 | * @cmd: Prepare using this scsi command |
511 | * @busy: busy flag if no resources |
512 | * |
513 | * Prepares a command and scatter gather list for the controller. This routine |
514 | * also finds out if the commands is intended for a logical drive or a |
515 | * physical device and prepares the controller command accordingly. |
516 | * |
517 | * We also re-order the logical drives and physical devices based on their |
518 | * boot settings. |
519 | */ |
520 | static scb_t * |
521 | mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy) |
522 | { |
523 | mega_passthru *pthru; |
524 | scb_t *scb; |
525 | mbox_t *mbox; |
526 | u32 seg; |
527 | char islogical; |
528 | int max_ldrv_num; |
529 | int channel = 0; |
530 | int target = 0; |
531 | int ldrv_num = 0; /* logical drive number */ |
532 | |
533 | /* |
534 | * We know what channels our logical drives are on - mega_find_card() |
535 | */ |
536 | islogical = adapter->logdrv_chan[cmd->device->channel]; |
537 | |
538 | /* |
539 | * The theory: If physical drive is chosen for boot, all the physical |
540 | * devices are exported before the logical drives, otherwise physical |
541 | * devices are pushed after logical drives, in which case - Kernel sees |
542 | * the physical devices on virtual channel which is obviously converted |
543 | * to actual channel on the HBA. |
544 | */ |
545 | if( adapter->boot_pdrv_enabled ) { |
546 | if( islogical ) { |
547 | /* logical channel */ |
548 | channel = cmd->device->channel - |
549 | adapter->product_info.nchannels; |
550 | } |
551 | else { |
552 | /* this is physical channel */ |
553 | channel = cmd->device->channel; |
554 | target = cmd->device->id; |
555 | |
556 | /* |
557 | * boot from a physical disk, that disk needs to be |
558 | * exposed first IF both the channels are SCSI, then |
559 | * booting from the second channel is not allowed. |
560 | */ |
561 | if( target == 0 ) { |
562 | target = adapter->boot_pdrv_tgt; |
563 | } |
564 | else if( target == adapter->boot_pdrv_tgt ) { |
565 | target = 0; |
566 | } |
567 | } |
568 | } |
569 | else { |
570 | if( islogical ) { |
571 | /* this is the logical channel */ |
572 | channel = cmd->device->channel; |
573 | } |
574 | else { |
575 | /* physical channel */ |
576 | channel = cmd->device->channel - NVIRT_CHAN; |
577 | target = cmd->device->id; |
578 | } |
579 | } |
580 | |
581 | |
582 | if(islogical) { |
583 | |
584 | /* have just LUN 0 for each target on virtual channels */ |
585 | if (cmd->device->lun) { |
586 | cmd->result = (DID_BAD_TARGET << 16); |
587 | scsi_done(cmd); |
588 | return NULL; |
589 | } |
590 | |
591 | ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); |
592 | |
593 | |
594 | max_ldrv_num = (adapter->flag & BOARD_40LD) ? |
595 | MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; |
596 | |
597 | /* |
598 | * max_ldrv_num increases by 0x80 if some logical drive was |
599 | * deleted. |
600 | */ |
601 | if(adapter->read_ldidmap) |
602 | max_ldrv_num += 0x80; |
603 | |
604 | if(ldrv_num > max_ldrv_num ) { |
605 | cmd->result = (DID_BAD_TARGET << 16); |
606 | scsi_done(cmd); |
607 | return NULL; |
608 | } |
609 | |
610 | } |
611 | else { |
612 | if( cmd->device->lun > 7) { |
613 | /* |
614 | * Do not support lun >7 for physically accessed |
615 | * devices |
616 | */ |
617 | cmd->result = (DID_BAD_TARGET << 16); |
618 | scsi_done(cmd); |
619 | return NULL; |
620 | } |
621 | } |
622 | |
623 | /* |
624 | * |
625 | * Logical drive commands |
626 | * |
627 | */ |
628 | if(islogical) { |
629 | switch (cmd->cmnd[0]) { |
630 | case TEST_UNIT_READY: |
631 | #if MEGA_HAVE_CLUSTERING |
632 | /* |
633 | * Do we support clustering and is the support enabled |
634 | * If no, return success always |
635 | */ |
636 | if( !adapter->has_cluster ) { |
637 | cmd->result = (DID_OK << 16); |
638 | scsi_done(cmd); |
639 | return NULL; |
640 | } |
641 | |
642 | if(!(scb = mega_allocate_scb(adapter, cmd))) { |
643 | *busy = 1; |
644 | return NULL; |
645 | } |
646 | |
647 | scb->raw_mbox[0] = MEGA_CLUSTER_CMD; |
648 | scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; |
649 | scb->raw_mbox[3] = ldrv_num; |
650 | |
651 | scb->dma_direction = DMA_NONE; |
652 | |
653 | return scb; |
654 | #else |
655 | cmd->result = (DID_OK << 16); |
656 | scsi_done(cmd); |
657 | return NULL; |
658 | #endif |
659 | |
660 | case MODE_SENSE: { |
661 | char *buf; |
662 | struct scatterlist *sg; |
663 | |
664 | sg = scsi_sglist(cmd); |
665 | buf = kmap_atomic(page: sg_page(sg)) + sg->offset; |
666 | |
667 | memset(buf, 0, cmd->cmnd[4]); |
668 | kunmap_atomic(buf - sg->offset); |
669 | |
670 | cmd->result = (DID_OK << 16); |
671 | scsi_done(cmd); |
672 | return NULL; |
673 | } |
674 | |
675 | case READ_CAPACITY: |
676 | case INQUIRY: |
677 | |
678 | if(!(adapter->flag & (1L << cmd->device->channel))) { |
679 | |
680 | dev_notice(&adapter->dev->dev, |
681 | "scsi%d: scanning scsi channel %d " |
682 | "for logical drives\n" , |
683 | adapter->host->host_no, |
684 | cmd->device->channel); |
685 | |
686 | adapter->flag |= (1L << cmd->device->channel); |
687 | } |
688 | |
689 | /* Allocate a SCB and initialize passthru */ |
690 | if(!(scb = mega_allocate_scb(adapter, cmd))) { |
691 | *busy = 1; |
692 | return NULL; |
693 | } |
694 | pthru = scb->pthru; |
695 | |
696 | mbox = (mbox_t *)scb->raw_mbox; |
697 | memset(mbox, 0, sizeof(scb->raw_mbox)); |
698 | memset(pthru, 0, sizeof(mega_passthru)); |
699 | |
700 | pthru->timeout = 0; |
701 | pthru->ars = 1; |
702 | pthru->reqsenselen = 14; |
703 | pthru->islogical = 1; |
704 | pthru->logdrv = ldrv_num; |
705 | pthru->cdblen = cmd->cmd_len; |
706 | memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); |
707 | |
708 | if( adapter->has_64bit_addr ) { |
709 | mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
710 | } |
711 | else { |
712 | mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
713 | } |
714 | |
715 | scb->dma_direction = DMA_FROM_DEVICE; |
716 | |
717 | pthru->numsgelements = mega_build_sglist(adapter, scb, |
718 | buffer: &pthru->dataxferaddr, length: &pthru->dataxferlen); |
719 | |
720 | mbox->m_out.xferaddr = scb->pthru_dma_addr; |
721 | |
722 | return scb; |
723 | |
724 | case READ_6: |
725 | case WRITE_6: |
726 | case READ_10: |
727 | case WRITE_10: |
728 | case READ_12: |
729 | case WRITE_12: |
730 | |
731 | /* Allocate a SCB and initialize mailbox */ |
732 | if(!(scb = mega_allocate_scb(adapter, cmd))) { |
733 | *busy = 1; |
734 | return NULL; |
735 | } |
736 | mbox = (mbox_t *)scb->raw_mbox; |
737 | |
738 | memset(mbox, 0, sizeof(scb->raw_mbox)); |
739 | mbox->m_out.logdrv = ldrv_num; |
740 | |
741 | /* |
742 | * A little hack: 2nd bit is zero for all scsi read |
743 | * commands and is set for all scsi write commands |
744 | */ |
745 | if( adapter->has_64bit_addr ) { |
746 | mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? |
747 | MEGA_MBOXCMD_LWRITE64: |
748 | MEGA_MBOXCMD_LREAD64 ; |
749 | } |
750 | else { |
751 | mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? |
752 | MEGA_MBOXCMD_LWRITE: |
753 | MEGA_MBOXCMD_LREAD ; |
754 | } |
755 | |
756 | /* |
757 | * 6-byte READ(0x08) or WRITE(0x0A) cdb |
758 | */ |
759 | if( cmd->cmd_len == 6 ) { |
760 | mbox->m_out.numsectors = (u32) cmd->cmnd[4]; |
761 | mbox->m_out.lba = |
762 | ((u32)cmd->cmnd[1] << 16) | |
763 | ((u32)cmd->cmnd[2] << 8) | |
764 | (u32)cmd->cmnd[3]; |
765 | |
766 | mbox->m_out.lba &= 0x1FFFFF; |
767 | |
768 | #if MEGA_HAVE_STATS |
769 | /* |
770 | * Take modulo 0x80, since the logical drive |
771 | * number increases by 0x80 when a logical |
772 | * drive was deleted |
773 | */ |
774 | if (*cmd->cmnd == READ_6) { |
775 | adapter->nreads[ldrv_num%0x80]++; |
776 | adapter->nreadblocks[ldrv_num%0x80] += |
777 | mbox->m_out.numsectors; |
778 | } else { |
779 | adapter->nwrites[ldrv_num%0x80]++; |
780 | adapter->nwriteblocks[ldrv_num%0x80] += |
781 | mbox->m_out.numsectors; |
782 | } |
783 | #endif |
784 | } |
785 | |
786 | /* |
787 | * 10-byte READ(0x28) or WRITE(0x2A) cdb |
788 | */ |
789 | if( cmd->cmd_len == 10 ) { |
790 | mbox->m_out.numsectors = |
791 | (u32)cmd->cmnd[8] | |
792 | ((u32)cmd->cmnd[7] << 8); |
793 | mbox->m_out.lba = |
794 | ((u32)cmd->cmnd[2] << 24) | |
795 | ((u32)cmd->cmnd[3] << 16) | |
796 | ((u32)cmd->cmnd[4] << 8) | |
797 | (u32)cmd->cmnd[5]; |
798 | |
799 | #if MEGA_HAVE_STATS |
800 | if (*cmd->cmnd == READ_10) { |
801 | adapter->nreads[ldrv_num%0x80]++; |
802 | adapter->nreadblocks[ldrv_num%0x80] += |
803 | mbox->m_out.numsectors; |
804 | } else { |
805 | adapter->nwrites[ldrv_num%0x80]++; |
806 | adapter->nwriteblocks[ldrv_num%0x80] += |
807 | mbox->m_out.numsectors; |
808 | } |
809 | #endif |
810 | } |
811 | |
812 | /* |
813 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb |
814 | */ |
815 | if( cmd->cmd_len == 12 ) { |
816 | mbox->m_out.lba = |
817 | ((u32)cmd->cmnd[2] << 24) | |
818 | ((u32)cmd->cmnd[3] << 16) | |
819 | ((u32)cmd->cmnd[4] << 8) | |
820 | (u32)cmd->cmnd[5]; |
821 | |
822 | mbox->m_out.numsectors = |
823 | ((u32)cmd->cmnd[6] << 24) | |
824 | ((u32)cmd->cmnd[7] << 16) | |
825 | ((u32)cmd->cmnd[8] << 8) | |
826 | (u32)cmd->cmnd[9]; |
827 | |
828 | #if MEGA_HAVE_STATS |
829 | if (*cmd->cmnd == READ_12) { |
830 | adapter->nreads[ldrv_num%0x80]++; |
831 | adapter->nreadblocks[ldrv_num%0x80] += |
832 | mbox->m_out.numsectors; |
833 | } else { |
834 | adapter->nwrites[ldrv_num%0x80]++; |
835 | adapter->nwriteblocks[ldrv_num%0x80] += |
836 | mbox->m_out.numsectors; |
837 | } |
838 | #endif |
839 | } |
840 | |
841 | /* |
842 | * If it is a read command |
843 | */ |
844 | if( (*cmd->cmnd & 0x0F) == 0x08 ) { |
845 | scb->dma_direction = DMA_FROM_DEVICE; |
846 | } |
847 | else { |
848 | scb->dma_direction = DMA_TO_DEVICE; |
849 | } |
850 | |
851 | /* Calculate Scatter-Gather info */ |
852 | mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, |
853 | buffer: (u32 *)&mbox->m_out.xferaddr, length: &seg); |
854 | |
855 | return scb; |
856 | |
857 | #if MEGA_HAVE_CLUSTERING |
858 | case RESERVE: |
859 | case RELEASE: |
860 | |
861 | /* |
862 | * Do we support clustering and is the support enabled |
863 | */ |
864 | if( ! adapter->has_cluster ) { |
865 | |
866 | cmd->result = (DID_BAD_TARGET << 16); |
867 | scsi_done(cmd); |
868 | return NULL; |
869 | } |
870 | |
871 | /* Allocate a SCB and initialize mailbox */ |
872 | if(!(scb = mega_allocate_scb(adapter, cmd))) { |
873 | *busy = 1; |
874 | return NULL; |
875 | } |
876 | |
877 | scb->raw_mbox[0] = MEGA_CLUSTER_CMD; |
878 | scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? |
879 | MEGA_RESERVE_LD : MEGA_RELEASE_LD; |
880 | |
881 | scb->raw_mbox[3] = ldrv_num; |
882 | |
883 | scb->dma_direction = DMA_NONE; |
884 | |
885 | return scb; |
886 | #endif |
887 | |
888 | default: |
889 | cmd->result = (DID_BAD_TARGET << 16); |
890 | scsi_done(cmd); |
891 | return NULL; |
892 | } |
893 | } |
894 | |
895 | /* |
896 | * Passthru drive commands |
897 | */ |
898 | else { |
899 | /* Allocate a SCB and initialize passthru */ |
900 | if(!(scb = mega_allocate_scb(adapter, cmd))) { |
901 | *busy = 1; |
902 | return NULL; |
903 | } |
904 | |
905 | mbox = (mbox_t *)scb->raw_mbox; |
906 | memset(mbox, 0, sizeof(scb->raw_mbox)); |
907 | |
908 | if( adapter->support_ext_cdb ) { |
909 | |
910 | mega_prepare_extpassthru(adapter, scb, cmd, |
911 | channel, target); |
912 | |
913 | mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; |
914 | |
915 | mbox->m_out.xferaddr = scb->epthru_dma_addr; |
916 | |
917 | } |
918 | else { |
919 | |
920 | pthru = mega_prepare_passthru(adapter, scb, cmd, |
921 | channel, target); |
922 | |
923 | /* Initialize mailbox */ |
924 | if( adapter->has_64bit_addr ) { |
925 | mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
926 | } |
927 | else { |
928 | mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
929 | } |
930 | |
931 | mbox->m_out.xferaddr = scb->pthru_dma_addr; |
932 | |
933 | } |
934 | return scb; |
935 | } |
936 | return NULL; |
937 | } |
938 | |
939 | |
940 | /** |
941 | * mega_prepare_passthru() |
942 | * @adapter: pointer to our soft state |
943 | * @scb: our scsi control block |
944 | * @cmd: scsi command from the mid-layer |
945 | * @channel: actual channel on the controller |
946 | * @target: actual id on the controller. |
947 | * |
948 | * prepare a command for the scsi physical devices. |
949 | */ |
950 | static mega_passthru * |
951 | mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd, |
952 | int channel, int target) |
953 | { |
954 | mega_passthru *pthru; |
955 | |
956 | pthru = scb->pthru; |
957 | memset(pthru, 0, sizeof (mega_passthru)); |
958 | |
959 | /* 0=6sec/1=60sec/2=10min/3=3hrs */ |
960 | pthru->timeout = 2; |
961 | |
962 | pthru->ars = 1; |
963 | pthru->reqsenselen = 14; |
964 | pthru->islogical = 0; |
965 | |
966 | pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; |
967 | |
968 | pthru->target = (adapter->flag & BOARD_40LD) ? |
969 | (channel << 4) | target : target; |
970 | |
971 | pthru->cdblen = cmd->cmd_len; |
972 | pthru->logdrv = cmd->device->lun; |
973 | |
974 | memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); |
975 | |
976 | /* Not sure about the direction */ |
977 | scb->dma_direction = DMA_BIDIRECTIONAL; |
978 | |
979 | /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ |
980 | switch (cmd->cmnd[0]) { |
981 | case INQUIRY: |
982 | case READ_CAPACITY: |
983 | if(!(adapter->flag & (1L << cmd->device->channel))) { |
984 | |
985 | dev_notice(&adapter->dev->dev, |
986 | "scsi%d: scanning scsi channel %d [P%d] " |
987 | "for physical devices\n" , |
988 | adapter->host->host_no, |
989 | cmd->device->channel, channel); |
990 | |
991 | adapter->flag |= (1L << cmd->device->channel); |
992 | } |
993 | fallthrough; |
994 | default: |
995 | pthru->numsgelements = mega_build_sglist(adapter, scb, |
996 | buffer: &pthru->dataxferaddr, length: &pthru->dataxferlen); |
997 | break; |
998 | } |
999 | return pthru; |
1000 | } |
1001 | |
1002 | |
1003 | /** |
1004 | * mega_prepare_extpassthru() |
1005 | * @adapter: pointer to our soft state |
1006 | * @scb: our scsi control block |
1007 | * @cmd: scsi command from the mid-layer |
1008 | * @channel: actual channel on the controller |
1009 | * @target: actual id on the controller. |
1010 | * |
1011 | * prepare a command for the scsi physical devices. This rountine prepares |
1012 | * commands for devices which can take extended CDBs (>10 bytes) |
1013 | */ |
1014 | static mega_ext_passthru * |
1015 | mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, |
1016 | struct scsi_cmnd *cmd, |
1017 | int channel, int target) |
1018 | { |
1019 | mega_ext_passthru *epthru; |
1020 | |
1021 | epthru = scb->epthru; |
1022 | memset(epthru, 0, sizeof(mega_ext_passthru)); |
1023 | |
1024 | /* 0=6sec/1=60sec/2=10min/3=3hrs */ |
1025 | epthru->timeout = 2; |
1026 | |
1027 | epthru->ars = 1; |
1028 | epthru->reqsenselen = 14; |
1029 | epthru->islogical = 0; |
1030 | |
1031 | epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; |
1032 | epthru->target = (adapter->flag & BOARD_40LD) ? |
1033 | (channel << 4) | target : target; |
1034 | |
1035 | epthru->cdblen = cmd->cmd_len; |
1036 | epthru->logdrv = cmd->device->lun; |
1037 | |
1038 | memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); |
1039 | |
1040 | /* Not sure about the direction */ |
1041 | scb->dma_direction = DMA_BIDIRECTIONAL; |
1042 | |
1043 | switch(cmd->cmnd[0]) { |
1044 | case INQUIRY: |
1045 | case READ_CAPACITY: |
1046 | if(!(adapter->flag & (1L << cmd->device->channel))) { |
1047 | |
1048 | dev_notice(&adapter->dev->dev, |
1049 | "scsi%d: scanning scsi channel %d [P%d] " |
1050 | "for physical devices\n" , |
1051 | adapter->host->host_no, |
1052 | cmd->device->channel, channel); |
1053 | |
1054 | adapter->flag |= (1L << cmd->device->channel); |
1055 | } |
1056 | fallthrough; |
1057 | default: |
1058 | epthru->numsgelements = mega_build_sglist(adapter, scb, |
1059 | buffer: &epthru->dataxferaddr, length: &epthru->dataxferlen); |
1060 | break; |
1061 | } |
1062 | |
1063 | return epthru; |
1064 | } |
1065 | |
1066 | static void |
1067 | __mega_runpendq(adapter_t *adapter) |
1068 | { |
1069 | scb_t *scb; |
1070 | struct list_head *pos, *next; |
1071 | |
1072 | /* Issue any pending commands to the card */ |
1073 | list_for_each_safe(pos, next, &adapter->pending_list) { |
1074 | |
1075 | scb = list_entry(pos, scb_t, list); |
1076 | |
1077 | if( !(scb->state & SCB_ISSUED) ) { |
1078 | |
1079 | if( issue_scb(adapter, scb) != 0 ) |
1080 | return; |
1081 | } |
1082 | } |
1083 | |
1084 | return; |
1085 | } |
1086 | |
1087 | |
1088 | /** |
1089 | * issue_scb() |
1090 | * @adapter: pointer to our soft state |
1091 | * @scb: scsi control block |
1092 | * |
1093 | * Post a command to the card if the mailbox is available, otherwise return |
1094 | * busy. We also take the scb from the pending list if the mailbox is |
1095 | * available. |
1096 | */ |
1097 | static int |
1098 | issue_scb(adapter_t *adapter, scb_t *scb) |
1099 | { |
1100 | volatile mbox64_t *mbox64 = adapter->mbox64; |
1101 | volatile mbox_t *mbox = adapter->mbox; |
1102 | unsigned int i = 0; |
1103 | |
1104 | if(unlikely(mbox->m_in.busy)) { |
1105 | do { |
1106 | udelay(1); |
1107 | i++; |
1108 | } while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); |
1109 | |
1110 | if(mbox->m_in.busy) return -1; |
1111 | } |
1112 | |
1113 | /* Copy mailbox data into host structure */ |
1114 | memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, |
1115 | sizeof(struct mbox_out)); |
1116 | |
1117 | mbox->m_out.cmdid = scb->idx; /* Set cmdid */ |
1118 | mbox->m_in.busy = 1; /* Set busy */ |
1119 | |
1120 | |
1121 | /* |
1122 | * Increment the pending queue counter |
1123 | */ |
1124 | atomic_inc(v: &adapter->pend_cmds); |
1125 | |
1126 | switch (mbox->m_out.cmd) { |
1127 | case MEGA_MBOXCMD_LREAD64: |
1128 | case MEGA_MBOXCMD_LWRITE64: |
1129 | case MEGA_MBOXCMD_PASSTHRU64: |
1130 | case MEGA_MBOXCMD_EXTPTHRU: |
1131 | mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
1132 | mbox64->xfer_segment_hi = 0; |
1133 | mbox->m_out.xferaddr = 0xFFFFFFFF; |
1134 | break; |
1135 | default: |
1136 | mbox64->xfer_segment_lo = 0; |
1137 | mbox64->xfer_segment_hi = 0; |
1138 | } |
1139 | |
1140 | /* |
1141 | * post the command |
1142 | */ |
1143 | scb->state |= SCB_ISSUED; |
1144 | |
1145 | if( likely(adapter->flag & BOARD_MEMMAP) ) { |
1146 | mbox->m_in.poll = 0; |
1147 | mbox->m_in.ack = 0; |
1148 | WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
1149 | } |
1150 | else { |
1151 | irq_enable(adapter); |
1152 | issue_command(adapter); |
1153 | } |
1154 | |
1155 | return 0; |
1156 | } |
1157 | |
1158 | /* |
1159 | * Wait until the controller's mailbox is available |
1160 | */ |
1161 | static inline int |
1162 | mega_busywait_mbox (adapter_t *adapter) |
1163 | { |
1164 | if (adapter->mbox->m_in.busy) |
1165 | return __mega_busywait_mbox(adapter); |
1166 | return 0; |
1167 | } |
1168 | |
1169 | /** |
1170 | * issue_scb_block() |
1171 | * @adapter: pointer to our soft state |
1172 | * @raw_mbox: the mailbox |
1173 | * |
1174 | * Issue a scb in synchronous and non-interrupt mode |
1175 | */ |
1176 | static int |
1177 | issue_scb_block(adapter_t *adapter, u_char *raw_mbox) |
1178 | { |
1179 | volatile mbox64_t *mbox64 = adapter->mbox64; |
1180 | volatile mbox_t *mbox = adapter->mbox; |
1181 | u8 byte; |
1182 | |
1183 | /* Wait until mailbox is free */ |
1184 | if(mega_busywait_mbox (adapter)) |
1185 | goto bug_blocked_mailbox; |
1186 | |
1187 | /* Copy mailbox data into host structure */ |
1188 | memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); |
1189 | mbox->m_out.cmdid = 0xFE; |
1190 | mbox->m_in.busy = 1; |
1191 | |
1192 | switch (raw_mbox[0]) { |
1193 | case MEGA_MBOXCMD_LREAD64: |
1194 | case MEGA_MBOXCMD_LWRITE64: |
1195 | case MEGA_MBOXCMD_PASSTHRU64: |
1196 | case MEGA_MBOXCMD_EXTPTHRU: |
1197 | mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
1198 | mbox64->xfer_segment_hi = 0; |
1199 | mbox->m_out.xferaddr = 0xFFFFFFFF; |
1200 | break; |
1201 | default: |
1202 | mbox64->xfer_segment_lo = 0; |
1203 | mbox64->xfer_segment_hi = 0; |
1204 | } |
1205 | |
1206 | if( likely(adapter->flag & BOARD_MEMMAP) ) { |
1207 | mbox->m_in.poll = 0; |
1208 | mbox->m_in.ack = 0; |
1209 | mbox->m_in.numstatus = 0xFF; |
1210 | mbox->m_in.status = 0xFF; |
1211 | WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
1212 | |
1213 | while((volatile u8)mbox->m_in.numstatus == 0xFF) |
1214 | cpu_relax(); |
1215 | |
1216 | mbox->m_in.numstatus = 0xFF; |
1217 | |
1218 | while( (volatile u8)mbox->m_in.poll != 0x77 ) |
1219 | cpu_relax(); |
1220 | |
1221 | mbox->m_in.poll = 0; |
1222 | mbox->m_in.ack = 0x77; |
1223 | |
1224 | WRINDOOR(adapter, adapter->mbox_dma | 0x2); |
1225 | |
1226 | while(RDINDOOR(adapter) & 0x2) |
1227 | cpu_relax(); |
1228 | } |
1229 | else { |
1230 | irq_disable(adapter); |
1231 | issue_command(adapter); |
1232 | |
1233 | while (!((byte = irq_state(adapter)) & INTR_VALID)) |
1234 | cpu_relax(); |
1235 | |
1236 | set_irq_state(adapter, byte); |
1237 | irq_enable(adapter); |
1238 | irq_ack(adapter); |
1239 | } |
1240 | |
1241 | return mbox->m_in.status; |
1242 | |
1243 | bug_blocked_mailbox: |
1244 | dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n" ); |
1245 | udelay (1000); |
1246 | return -1; |
1247 | } |
1248 | |
1249 | |
1250 | /** |
1251 | * megaraid_isr_iomapped() |
1252 | * @irq: irq |
1253 | * @devp: pointer to our soft state |
1254 | * |
1255 | * Interrupt service routine for io-mapped controllers. |
1256 | * Find out if our device is interrupting. If yes, acknowledge the interrupt |
1257 | * and service the completed commands. |
1258 | */ |
1259 | static irqreturn_t |
1260 | megaraid_isr_iomapped(int irq, void *devp) |
1261 | { |
1262 | adapter_t *adapter = devp; |
1263 | unsigned long flags; |
1264 | u8 status; |
1265 | u8 nstatus; |
1266 | u8 completed[MAX_FIRMWARE_STATUS]; |
1267 | u8 byte; |
1268 | int handled = 0; |
1269 | |
1270 | |
1271 | /* |
1272 | * loop till F/W has more commands for us to complete. |
1273 | */ |
1274 | spin_lock_irqsave(&adapter->lock, flags); |
1275 | |
1276 | do { |
1277 | /* Check if a valid interrupt is pending */ |
1278 | byte = irq_state(adapter); |
1279 | if( (byte & VALID_INTR_BYTE) == 0 ) { |
1280 | /* |
1281 | * No more pending commands |
1282 | */ |
1283 | goto out_unlock; |
1284 | } |
1285 | set_irq_state(adapter, byte); |
1286 | |
1287 | while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
1288 | == 0xFF) |
1289 | cpu_relax(); |
1290 | adapter->mbox->m_in.numstatus = 0xFF; |
1291 | |
1292 | status = adapter->mbox->m_in.status; |
1293 | |
1294 | /* |
1295 | * decrement the pending queue counter |
1296 | */ |
1297 | atomic_sub(i: nstatus, v: &adapter->pend_cmds); |
1298 | |
1299 | memcpy(completed, (void *)adapter->mbox->m_in.completed, |
1300 | nstatus); |
1301 | |
1302 | /* Acknowledge interrupt */ |
1303 | irq_ack(adapter); |
1304 | |
1305 | mega_cmd_done(adapter, completed, nstatus, status); |
1306 | |
1307 | mega_rundoneq(adapter); |
1308 | |
1309 | handled = 1; |
1310 | |
1311 | /* Loop through any pending requests */ |
1312 | if(atomic_read(v: &adapter->quiescent) == 0) { |
1313 | mega_runpendq(adapter); |
1314 | } |
1315 | |
1316 | } while(1); |
1317 | |
1318 | out_unlock: |
1319 | |
1320 | spin_unlock_irqrestore(lock: &adapter->lock, flags); |
1321 | |
1322 | return IRQ_RETVAL(handled); |
1323 | } |
1324 | |
1325 | |
1326 | /** |
1327 | * megaraid_isr_memmapped() |
1328 | * @irq: irq |
1329 | * @devp: pointer to our soft state |
1330 | * |
1331 | * Interrupt service routine for memory-mapped controllers. |
1332 | * Find out if our device is interrupting. If yes, acknowledge the interrupt |
1333 | * and service the completed commands. |
1334 | */ |
1335 | static irqreturn_t |
1336 | megaraid_isr_memmapped(int irq, void *devp) |
1337 | { |
1338 | adapter_t *adapter = devp; |
1339 | unsigned long flags; |
1340 | u8 status; |
1341 | u32 dword = 0; |
1342 | u8 nstatus; |
1343 | u8 completed[MAX_FIRMWARE_STATUS]; |
1344 | int handled = 0; |
1345 | |
1346 | |
1347 | /* |
1348 | * loop till F/W has more commands for us to complete. |
1349 | */ |
1350 | spin_lock_irqsave(&adapter->lock, flags); |
1351 | |
1352 | do { |
1353 | /* Check if a valid interrupt is pending */ |
1354 | dword = RDOUTDOOR(adapter); |
1355 | if(dword != 0x10001234) { |
1356 | /* |
1357 | * No more pending commands |
1358 | */ |
1359 | goto out_unlock; |
1360 | } |
1361 | WROUTDOOR(adapter, 0x10001234); |
1362 | |
1363 | while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
1364 | == 0xFF) { |
1365 | cpu_relax(); |
1366 | } |
1367 | adapter->mbox->m_in.numstatus = 0xFF; |
1368 | |
1369 | status = adapter->mbox->m_in.status; |
1370 | |
1371 | /* |
1372 | * decrement the pending queue counter |
1373 | */ |
1374 | atomic_sub(i: nstatus, v: &adapter->pend_cmds); |
1375 | |
1376 | memcpy(completed, (void *)adapter->mbox->m_in.completed, |
1377 | nstatus); |
1378 | |
1379 | /* Acknowledge interrupt */ |
1380 | WRINDOOR(adapter, 0x2); |
1381 | |
1382 | handled = 1; |
1383 | |
1384 | while( RDINDOOR(adapter) & 0x02 ) |
1385 | cpu_relax(); |
1386 | |
1387 | mega_cmd_done(adapter, completed, nstatus, status); |
1388 | |
1389 | mega_rundoneq(adapter); |
1390 | |
1391 | /* Loop through any pending requests */ |
1392 | if(atomic_read(v: &adapter->quiescent) == 0) { |
1393 | mega_runpendq(adapter); |
1394 | } |
1395 | |
1396 | } while(1); |
1397 | |
1398 | out_unlock: |
1399 | |
1400 | spin_unlock_irqrestore(lock: &adapter->lock, flags); |
1401 | |
1402 | return IRQ_RETVAL(handled); |
1403 | } |
1404 | /** |
1405 | * mega_cmd_done() |
1406 | * @adapter: pointer to our soft state |
1407 | * @completed: array of ids of completed commands |
1408 | * @nstatus: number of completed commands |
1409 | * @status: status of the last command completed |
1410 | * |
1411 | * Complete the commands and call the scsi mid-layer callback hooks. |
1412 | */ |
1413 | static void |
1414 | mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) |
1415 | { |
1416 | mega_ext_passthru *epthru = NULL; |
1417 | struct scatterlist *sgl; |
1418 | struct scsi_cmnd *cmd = NULL; |
1419 | mega_passthru *pthru = NULL; |
1420 | mbox_t *mbox = NULL; |
1421 | u8 c; |
1422 | scb_t *scb; |
1423 | int islogical; |
1424 | int cmdid; |
1425 | int i; |
1426 | |
1427 | /* |
1428 | * for all the commands completed, call the mid-layer callback routine |
1429 | * and free the scb. |
1430 | */ |
1431 | for( i = 0; i < nstatus; i++ ) { |
1432 | |
1433 | cmdid = completed[i]; |
1434 | |
1435 | /* |
1436 | * Only free SCBs for the commands coming down from the |
1437 | * mid-layer, not for which were issued internally |
1438 | * |
1439 | * For internal command, restore the status returned by the |
1440 | * firmware so that user can interpret it. |
1441 | */ |
1442 | if (cmdid == CMDID_INT_CMDS) { |
1443 | scb = &adapter->int_scb; |
1444 | cmd = scb->cmd; |
1445 | |
1446 | list_del_init(entry: &scb->list); |
1447 | scb->state = SCB_FREE; |
1448 | |
1449 | adapter->int_status = status; |
1450 | complete(&adapter->int_waitq); |
1451 | } else { |
1452 | scb = &adapter->scb_list[cmdid]; |
1453 | |
1454 | /* |
1455 | * Make sure f/w has completed a valid command |
1456 | */ |
1457 | if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { |
1458 | dev_crit(&adapter->dev->dev, "invalid command " |
1459 | "Id %d, scb->state:%x, scsi cmd:%p\n" , |
1460 | cmdid, scb->state, scb->cmd); |
1461 | |
1462 | continue; |
1463 | } |
1464 | |
1465 | /* |
1466 | * Was a abort issued for this command |
1467 | */ |
1468 | if( scb->state & SCB_ABORT ) { |
1469 | |
1470 | dev_warn(&adapter->dev->dev, |
1471 | "aborted cmd [%x] complete\n" , |
1472 | scb->idx); |
1473 | |
1474 | scb->cmd->result = (DID_ABORT << 16); |
1475 | |
1476 | list_add_tail(SCSI_LIST(scb->cmd), |
1477 | head: &adapter->completed_list); |
1478 | |
1479 | mega_free_scb(adapter, scb); |
1480 | |
1481 | continue; |
1482 | } |
1483 | |
1484 | /* |
1485 | * Was a reset issued for this command |
1486 | */ |
1487 | if( scb->state & SCB_RESET ) { |
1488 | |
1489 | dev_warn(&adapter->dev->dev, |
1490 | "reset cmd [%x] complete\n" , |
1491 | scb->idx); |
1492 | |
1493 | scb->cmd->result = (DID_RESET << 16); |
1494 | |
1495 | list_add_tail(SCSI_LIST(scb->cmd), |
1496 | head: &adapter->completed_list); |
1497 | |
1498 | mega_free_scb (adapter, scb); |
1499 | |
1500 | continue; |
1501 | } |
1502 | |
1503 | cmd = scb->cmd; |
1504 | pthru = scb->pthru; |
1505 | epthru = scb->epthru; |
1506 | mbox = (mbox_t *)scb->raw_mbox; |
1507 | |
1508 | #if MEGA_HAVE_STATS |
1509 | { |
1510 | |
1511 | int logdrv = mbox->m_out.logdrv; |
1512 | |
1513 | islogical = adapter->logdrv_chan[cmd->channel]; |
1514 | /* |
1515 | * Maintain an error counter for the logical drive. |
1516 | * Some application like SNMP agent need such |
1517 | * statistics |
1518 | */ |
1519 | if( status && islogical && (cmd->cmnd[0] == READ_6 || |
1520 | cmd->cmnd[0] == READ_10 || |
1521 | cmd->cmnd[0] == READ_12)) { |
1522 | /* |
1523 | * Logical drive number increases by 0x80 when |
1524 | * a logical drive is deleted |
1525 | */ |
1526 | adapter->rd_errors[logdrv%0x80]++; |
1527 | } |
1528 | |
1529 | if( status && islogical && (cmd->cmnd[0] == WRITE_6 || |
1530 | cmd->cmnd[0] == WRITE_10 || |
1531 | cmd->cmnd[0] == WRITE_12)) { |
1532 | /* |
1533 | * Logical drive number increases by 0x80 when |
1534 | * a logical drive is deleted |
1535 | */ |
1536 | adapter->wr_errors[logdrv%0x80]++; |
1537 | } |
1538 | |
1539 | } |
1540 | #endif |
1541 | } |
1542 | |
1543 | /* |
1544 | * Do not return the presence of hard disk on the channel so, |
1545 | * inquiry sent, and returned data==hard disk or removable |
1546 | * hard disk and not logical, request should return failure! - |
1547 | * PJ |
1548 | */ |
1549 | islogical = adapter->logdrv_chan[cmd->device->channel]; |
1550 | if( cmd->cmnd[0] == INQUIRY && !islogical ) { |
1551 | |
1552 | sgl = scsi_sglist(cmd); |
1553 | if( sg_page(sg: sgl) ) { |
1554 | c = *(unsigned char *) sg_virt(sg: &sgl[0]); |
1555 | } else { |
1556 | dev_warn(&adapter->dev->dev, "invalid sg\n" ); |
1557 | c = 0; |
1558 | } |
1559 | |
1560 | if(IS_RAID_CH(adapter, cmd->device->channel) && |
1561 | ((c & 0x1F ) == TYPE_DISK)) { |
1562 | status = 0xF0; |
1563 | } |
1564 | } |
1565 | |
1566 | /* clear result; otherwise, success returns corrupt value */ |
1567 | cmd->result = 0; |
1568 | |
1569 | /* Convert MegaRAID status to Linux error code */ |
1570 | switch (status) { |
1571 | case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ |
1572 | cmd->result |= (DID_OK << 16); |
1573 | break; |
1574 | |
1575 | case 0x02: /* ERROR_ABORTED, i.e. |
1576 | SCSI_STATUS_CHECK_CONDITION */ |
1577 | |
1578 | /* set sense_buffer and result fields */ |
1579 | if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || |
1580 | mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { |
1581 | |
1582 | memcpy(cmd->sense_buffer, pthru->reqsensearea, |
1583 | 14); |
1584 | |
1585 | cmd->result = SAM_STAT_CHECK_CONDITION; |
1586 | } |
1587 | else { |
1588 | if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { |
1589 | |
1590 | memcpy(cmd->sense_buffer, |
1591 | epthru->reqsensearea, 14); |
1592 | |
1593 | cmd->result = SAM_STAT_CHECK_CONDITION; |
1594 | } else |
1595 | scsi_build_sense(scmd: cmd, desc: 0, |
1596 | ABORTED_COMMAND, asc: 0, ascq: 0); |
1597 | } |
1598 | break; |
1599 | |
1600 | case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. |
1601 | SCSI_STATUS_BUSY */ |
1602 | cmd->result |= (DID_BUS_BUSY << 16) | status; |
1603 | break; |
1604 | |
1605 | default: |
1606 | #if MEGA_HAVE_CLUSTERING |
1607 | /* |
1608 | * If TEST_UNIT_READY fails, we know |
1609 | * MEGA_RESERVATION_STATUS failed |
1610 | */ |
1611 | if( cmd->cmnd[0] == TEST_UNIT_READY ) { |
1612 | cmd->result |= (DID_ERROR << 16) | |
1613 | SAM_STAT_RESERVATION_CONFLICT; |
1614 | } |
1615 | else |
1616 | /* |
1617 | * Error code returned is 1 if Reserve or Release |
1618 | * failed or the input parameter is invalid |
1619 | */ |
1620 | if( status == 1 && |
1621 | (cmd->cmnd[0] == RESERVE || |
1622 | cmd->cmnd[0] == RELEASE) ) { |
1623 | |
1624 | cmd->result |= (DID_ERROR << 16) | |
1625 | SAM_STAT_RESERVATION_CONFLICT; |
1626 | } |
1627 | else |
1628 | #endif |
1629 | cmd->result |= (DID_BAD_TARGET << 16)|status; |
1630 | } |
1631 | |
1632 | mega_free_scb(adapter, scb); |
1633 | |
1634 | /* Add Scsi_Command to end of completed queue */ |
1635 | list_add_tail(SCSI_LIST(cmd), head: &adapter->completed_list); |
1636 | } |
1637 | } |
1638 | |
1639 | |
1640 | /* |
1641 | * mega_runpendq() |
1642 | * |
1643 | * Run through the list of completed requests and finish it |
1644 | */ |
1645 | static void |
1646 | mega_rundoneq (adapter_t *adapter) |
1647 | { |
1648 | struct megaraid_cmd_priv *cmd_priv; |
1649 | |
1650 | list_for_each_entry(cmd_priv, &adapter->completed_list, entry) |
1651 | scsi_done(cmd: megaraid_to_scsi_cmd(cmd_priv)); |
1652 | |
1653 | INIT_LIST_HEAD(list: &adapter->completed_list); |
1654 | } |
1655 | |
1656 | |
1657 | /* |
1658 | * Free a SCB structure |
1659 | * Note: We assume the scsi commands associated with this scb is not free yet. |
1660 | */ |
1661 | static void |
1662 | mega_free_scb(adapter_t *adapter, scb_t *scb) |
1663 | { |
1664 | switch( scb->dma_type ) { |
1665 | |
1666 | case MEGA_DMA_TYPE_NONE: |
1667 | break; |
1668 | |
1669 | case MEGA_SGLIST: |
1670 | scsi_dma_unmap(cmd: scb->cmd); |
1671 | break; |
1672 | default: |
1673 | break; |
1674 | } |
1675 | |
1676 | /* |
1677 | * Remove from the pending list |
1678 | */ |
1679 | list_del_init(entry: &scb->list); |
1680 | |
1681 | /* Link the scb back into free list */ |
1682 | scb->state = SCB_FREE; |
1683 | scb->cmd = NULL; |
1684 | |
1685 | list_add(new: &scb->list, head: &adapter->free_list); |
1686 | } |
1687 | |
1688 | |
1689 | static int |
1690 | __mega_busywait_mbox (adapter_t *adapter) |
1691 | { |
1692 | volatile mbox_t *mbox = adapter->mbox; |
1693 | long counter; |
1694 | |
1695 | for (counter = 0; counter < 10000; counter++) { |
1696 | if (!mbox->m_in.busy) |
1697 | return 0; |
1698 | udelay(100); |
1699 | cond_resched(); |
1700 | } |
1701 | return -1; /* give up after 1 second */ |
1702 | } |
1703 | |
1704 | /* |
1705 | * Copies data to SGLIST |
1706 | * Note: For 64 bit cards, we need a minimum of one SG element for read/write |
1707 | */ |
1708 | static int |
1709 | mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) |
1710 | { |
1711 | struct scatterlist *sg; |
1712 | struct scsi_cmnd *cmd; |
1713 | int sgcnt; |
1714 | int idx; |
1715 | |
1716 | cmd = scb->cmd; |
1717 | |
1718 | /* |
1719 | * Copy Scatter-Gather list info into controller structure. |
1720 | * |
1721 | * The number of sg elements returned must not exceed our limit |
1722 | */ |
1723 | sgcnt = scsi_dma_map(cmd); |
1724 | |
1725 | scb->dma_type = MEGA_SGLIST; |
1726 | |
1727 | BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); |
1728 | |
1729 | *len = 0; |
1730 | |
1731 | if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { |
1732 | sg = scsi_sglist(cmd); |
1733 | scb->dma_h_bulkdata = sg_dma_address(sg); |
1734 | *buf = (u32)scb->dma_h_bulkdata; |
1735 | *len = sg_dma_len(sg); |
1736 | return 0; |
1737 | } |
1738 | |
1739 | scsi_for_each_sg(cmd, sg, sgcnt, idx) { |
1740 | if (adapter->has_64bit_addr) { |
1741 | scb->sgl64[idx].address = sg_dma_address(sg); |
1742 | *len += scb->sgl64[idx].length = sg_dma_len(sg); |
1743 | } else { |
1744 | scb->sgl[idx].address = sg_dma_address(sg); |
1745 | *len += scb->sgl[idx].length = sg_dma_len(sg); |
1746 | } |
1747 | } |
1748 | |
1749 | /* Reset pointer and length fields */ |
1750 | *buf = scb->sgl_dma_addr; |
1751 | |
1752 | /* Return count of SG requests */ |
1753 | return sgcnt; |
1754 | } |
1755 | |
1756 | |
1757 | /* |
1758 | * mega_8_to_40ld() |
1759 | * |
1760 | * takes all info in AdapterInquiry structure and puts it into ProductInfo and |
1761 | * Enquiry3 structures for later use |
1762 | */ |
1763 | static void |
1764 | mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, |
1765 | mega_product_info *product_info) |
1766 | { |
1767 | int i; |
1768 | |
1769 | product_info->max_commands = inquiry->adapter_info.max_commands; |
1770 | enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; |
1771 | product_info->nchannels = inquiry->adapter_info.nchannels; |
1772 | |
1773 | for (i = 0; i < 4; i++) { |
1774 | product_info->fw_version[i] = |
1775 | inquiry->adapter_info.fw_version[i]; |
1776 | |
1777 | product_info->bios_version[i] = |
1778 | inquiry->adapter_info.bios_version[i]; |
1779 | } |
1780 | enquiry3->cache_flush_interval = |
1781 | inquiry->adapter_info.cache_flush_interval; |
1782 | |
1783 | product_info->dram_size = inquiry->adapter_info.dram_size; |
1784 | |
1785 | enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; |
1786 | |
1787 | for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { |
1788 | enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; |
1789 | enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; |
1790 | enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; |
1791 | } |
1792 | |
1793 | for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) |
1794 | enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; |
1795 | } |
1796 | |
1797 | static inline void |
1798 | mega_free_sgl(adapter_t *adapter) |
1799 | { |
1800 | scb_t *scb; |
1801 | int i; |
1802 | |
1803 | for(i = 0; i < adapter->max_cmds; i++) { |
1804 | |
1805 | scb = &adapter->scb_list[i]; |
1806 | |
1807 | if( scb->sgl64 ) { |
1808 | dma_free_coherent(dev: &adapter->dev->dev, |
1809 | size: sizeof(mega_sgl64) * adapter->sglen, |
1810 | cpu_addr: scb->sgl64, dma_handle: scb->sgl_dma_addr); |
1811 | |
1812 | scb->sgl64 = NULL; |
1813 | } |
1814 | |
1815 | if( scb->pthru ) { |
1816 | dma_free_coherent(dev: &adapter->dev->dev, |
1817 | size: sizeof(mega_passthru), cpu_addr: scb->pthru, |
1818 | dma_handle: scb->pthru_dma_addr); |
1819 | |
1820 | scb->pthru = NULL; |
1821 | } |
1822 | |
1823 | if( scb->epthru ) { |
1824 | dma_free_coherent(dev: &adapter->dev->dev, |
1825 | size: sizeof(mega_ext_passthru), |
1826 | cpu_addr: scb->epthru, dma_handle: scb->epthru_dma_addr); |
1827 | |
1828 | scb->epthru = NULL; |
1829 | } |
1830 | |
1831 | } |
1832 | } |
1833 | |
1834 | |
1835 | /* |
1836 | * Get information about the card/driver |
1837 | */ |
1838 | const char * |
1839 | megaraid_info(struct Scsi_Host *host) |
1840 | { |
1841 | static char buffer[512]; |
1842 | adapter_t *adapter; |
1843 | |
1844 | adapter = (adapter_t *)host->hostdata; |
1845 | |
1846 | sprintf (buf: buffer, |
1847 | fmt: "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns" , |
1848 | adapter->fw_version, adapter->product_info.max_commands, |
1849 | adapter->host->max_id, adapter->host->max_channel, |
1850 | (u32)adapter->host->max_lun); |
1851 | return buffer; |
1852 | } |
1853 | |
1854 | /* |
1855 | * Abort a previous SCSI request. Only commands on the pending list can be |
1856 | * aborted. All the commands issued to the F/W must complete. |
1857 | */ |
1858 | static int |
1859 | megaraid_abort(struct scsi_cmnd *cmd) |
1860 | { |
1861 | adapter_t *adapter; |
1862 | int rval; |
1863 | |
1864 | adapter = (adapter_t *)cmd->device->host->hostdata; |
1865 | |
1866 | rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); |
1867 | |
1868 | /* |
1869 | * This is required here to complete any completed requests |
1870 | * to be communicated over to the mid layer. |
1871 | */ |
1872 | mega_rundoneq(adapter); |
1873 | |
1874 | return rval; |
1875 | } |
1876 | |
1877 | |
1878 | static int |
1879 | megaraid_reset(struct scsi_cmnd *cmd) |
1880 | { |
1881 | adapter_t *adapter; |
1882 | megacmd_t mc; |
1883 | int rval; |
1884 | |
1885 | adapter = (adapter_t *)cmd->device->host->hostdata; |
1886 | |
1887 | #if MEGA_HAVE_CLUSTERING |
1888 | mc.cmd = MEGA_CLUSTER_CMD; |
1889 | mc.opcode = MEGA_RESET_RESERVATIONS; |
1890 | |
1891 | if( mega_internal_command(adapter, &mc, NULL) != 0 ) { |
1892 | dev_warn(&adapter->dev->dev, "reservation reset failed\n" ); |
1893 | } |
1894 | else { |
1895 | dev_info(&adapter->dev->dev, "reservation reset\n" ); |
1896 | } |
1897 | #endif |
1898 | |
1899 | spin_lock_irq(lock: &adapter->lock); |
1900 | |
1901 | rval = megaraid_abort_and_reset(adapter, NULL, SCB_RESET); |
1902 | |
1903 | /* |
1904 | * This is required here to complete any completed requests |
1905 | * to be communicated over to the mid layer. |
1906 | */ |
1907 | mega_rundoneq(adapter); |
1908 | spin_unlock_irq(lock: &adapter->lock); |
1909 | |
1910 | return rval; |
1911 | } |
1912 | |
1913 | /** |
1914 | * megaraid_abort_and_reset() |
1915 | * @adapter: megaraid soft state |
1916 | * @cmd: scsi command to be aborted or reset |
1917 | * @aor: abort or reset flag |
1918 | * |
1919 | * Try to locate the scsi command in the pending queue. If found and is not |
1920 | * issued to the controller, abort/reset it. Otherwise return failure |
1921 | */ |
1922 | static int |
1923 | megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) |
1924 | { |
1925 | struct list_head *pos, *next; |
1926 | scb_t *scb; |
1927 | |
1928 | if (aor == SCB_ABORT) |
1929 | dev_warn(&adapter->dev->dev, |
1930 | "ABORTING cmd=%x <c=%d t=%d l=%d>\n" , |
1931 | cmd->cmnd[0], cmd->device->channel, |
1932 | cmd->device->id, (u32)cmd->device->lun); |
1933 | else |
1934 | dev_warn(&adapter->dev->dev, "RESETTING\n" ); |
1935 | |
1936 | if(list_empty(head: &adapter->pending_list)) |
1937 | return FAILED; |
1938 | |
1939 | list_for_each_safe(pos, next, &adapter->pending_list) { |
1940 | |
1941 | scb = list_entry(pos, scb_t, list); |
1942 | |
1943 | if (!cmd || scb->cmd == cmd) { /* Found command */ |
1944 | |
1945 | scb->state |= aor; |
1946 | |
1947 | /* |
1948 | * Check if this command has firmware ownership. If |
1949 | * yes, we cannot reset this command. Whenever f/w |
1950 | * completes this command, we will return appropriate |
1951 | * status from ISR. |
1952 | */ |
1953 | if( scb->state & SCB_ISSUED ) { |
1954 | |
1955 | dev_warn(&adapter->dev->dev, |
1956 | "%s[%x], fw owner\n" , |
1957 | (aor==SCB_ABORT) ? "ABORTING" :"RESET" , |
1958 | scb->idx); |
1959 | |
1960 | return FAILED; |
1961 | } |
1962 | /* |
1963 | * Not yet issued! Remove from the pending |
1964 | * list |
1965 | */ |
1966 | dev_warn(&adapter->dev->dev, |
1967 | "%s-[%x], driver owner\n" , |
1968 | (cmd) ? "ABORTING" :"RESET" , |
1969 | scb->idx); |
1970 | mega_free_scb(adapter, scb); |
1971 | |
1972 | if (cmd) { |
1973 | cmd->result = (DID_ABORT << 16); |
1974 | list_add_tail(SCSI_LIST(cmd), |
1975 | head: &adapter->completed_list); |
1976 | } |
1977 | |
1978 | return SUCCESS; |
1979 | } |
1980 | } |
1981 | |
1982 | return FAILED; |
1983 | } |
1984 | |
1985 | static inline int |
1986 | make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) |
1987 | { |
1988 | *pdev = pci_alloc_dev(NULL); |
1989 | |
1990 | if( *pdev == NULL ) return -1; |
1991 | |
1992 | memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); |
1993 | |
1994 | if (dma_set_mask(dev: &(*pdev)->dev, DMA_BIT_MASK(32)) != 0) { |
1995 | kfree(objp: *pdev); |
1996 | return -1; |
1997 | } |
1998 | |
1999 | return 0; |
2000 | } |
2001 | |
2002 | static inline void |
2003 | free_local_pdev(struct pci_dev *pdev) |
2004 | { |
2005 | kfree(objp: pdev); |
2006 | } |
2007 | |
2008 | /** |
2009 | * mega_allocate_inquiry() |
2010 | * @dma_handle: handle returned for dma address |
2011 | * @pdev: handle to pci device |
2012 | * |
2013 | * allocates memory for inquiry structure |
2014 | */ |
2015 | static inline void * |
2016 | mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) |
2017 | { |
2018 | return dma_alloc_coherent(dev: &pdev->dev, size: sizeof(mega_inquiry3), |
2019 | dma_handle, GFP_KERNEL); |
2020 | } |
2021 | |
2022 | |
2023 | static inline void |
2024 | mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) |
2025 | { |
2026 | dma_free_coherent(dev: &pdev->dev, size: sizeof(mega_inquiry3), cpu_addr: inquiry, |
2027 | dma_handle); |
2028 | } |
2029 | |
2030 | |
2031 | #ifdef CONFIG_PROC_FS |
2032 | /* Following code handles /proc fs */ |
2033 | |
2034 | /** |
2035 | * proc_show_config() |
2036 | * @m: Synthetic file construction data |
2037 | * @v: File iterator |
2038 | * |
2039 | * Display configuration information about the controller. |
2040 | */ |
2041 | static int |
2042 | proc_show_config(struct seq_file *m, void *v) |
2043 | { |
2044 | |
2045 | adapter_t *adapter = m->private; |
2046 | |
2047 | seq_puts(m, MEGARAID_VERSION); |
2048 | if(adapter->product_info.product_name[0]) |
2049 | seq_printf(m, fmt: "%s\n" , adapter->product_info.product_name); |
2050 | |
2051 | seq_puts(m, s: "Controller Type: " ); |
2052 | |
2053 | if( adapter->flag & BOARD_MEMMAP ) |
2054 | seq_puts(m, s: "438/466/467/471/493/518/520/531/532\n" ); |
2055 | else |
2056 | seq_puts(m, s: "418/428/434\n" ); |
2057 | |
2058 | if(adapter->flag & BOARD_40LD) |
2059 | seq_puts(m, s: "Controller Supports 40 Logical Drives\n" ); |
2060 | |
2061 | if(adapter->flag & BOARD_64BIT) |
2062 | seq_puts(m, s: "Controller capable of 64-bit memory addressing\n" ); |
2063 | if( adapter->has_64bit_addr ) |
2064 | seq_puts(m, s: "Controller using 64-bit memory addressing\n" ); |
2065 | else |
2066 | seq_puts(m, s: "Controller is not using 64-bit memory addressing\n" ); |
2067 | |
2068 | seq_printf(m, fmt: "Base = %08lx, Irq = %d, " , |
2069 | adapter->base, adapter->host->irq); |
2070 | |
2071 | seq_printf(m, fmt: "Logical Drives = %d, Channels = %d\n" , |
2072 | adapter->numldrv, adapter->product_info.nchannels); |
2073 | |
2074 | seq_printf(m, fmt: "Version =%s:%s, DRAM = %dMb\n" , |
2075 | adapter->fw_version, adapter->bios_version, |
2076 | adapter->product_info.dram_size); |
2077 | |
2078 | seq_printf(m, fmt: "Controller Queue Depth = %d, Driver Queue Depth = %d\n" , |
2079 | adapter->product_info.max_commands, adapter->max_cmds); |
2080 | |
2081 | seq_printf(m, fmt: "support_ext_cdb = %d\n" , adapter->support_ext_cdb); |
2082 | seq_printf(m, fmt: "support_random_del = %d\n" , adapter->support_random_del); |
2083 | seq_printf(m, fmt: "boot_ldrv_enabled = %d\n" , adapter->boot_ldrv_enabled); |
2084 | seq_printf(m, fmt: "boot_ldrv = %d\n" , adapter->boot_ldrv); |
2085 | seq_printf(m, fmt: "boot_pdrv_enabled = %d\n" , adapter->boot_pdrv_enabled); |
2086 | seq_printf(m, fmt: "boot_pdrv_ch = %d\n" , adapter->boot_pdrv_ch); |
2087 | seq_printf(m, fmt: "boot_pdrv_tgt = %d\n" , adapter->boot_pdrv_tgt); |
2088 | seq_printf(m, fmt: "quiescent = %d\n" , |
2089 | atomic_read(v: &adapter->quiescent)); |
2090 | seq_printf(m, fmt: "has_cluster = %d\n" , adapter->has_cluster); |
2091 | |
2092 | seq_puts(m, s: "\nModule Parameters:\n" ); |
2093 | seq_printf(m, fmt: "max_cmd_per_lun = %d\n" , max_cmd_per_lun); |
2094 | seq_printf(m, fmt: "max_sectors_per_io = %d\n" , max_sectors_per_io); |
2095 | return 0; |
2096 | } |
2097 | |
2098 | /** |
2099 | * proc_show_stat() |
2100 | * @m: Synthetic file construction data |
2101 | * @v: File iterator |
2102 | * |
2103 | * Display statistical information about the I/O activity. |
2104 | */ |
2105 | static int |
2106 | proc_show_stat(struct seq_file *m, void *v) |
2107 | { |
2108 | adapter_t *adapter = m->private; |
2109 | #if MEGA_HAVE_STATS |
2110 | int i; |
2111 | #endif |
2112 | |
2113 | seq_puts(m, s: "Statistical Information for this controller\n" ); |
2114 | seq_printf(m, fmt: "pend_cmds = %d\n" , atomic_read(v: &adapter->pend_cmds)); |
2115 | #if MEGA_HAVE_STATS |
2116 | for(i = 0; i < adapter->numldrv; i++) { |
2117 | seq_printf(m, "Logical Drive %d:\n" , i); |
2118 | seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n" , |
2119 | adapter->nreads[i], adapter->nwrites[i]); |
2120 | seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n" , |
2121 | adapter->nreadblocks[i], adapter->nwriteblocks[i]); |
2122 | seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n" , |
2123 | adapter->rd_errors[i], adapter->wr_errors[i]); |
2124 | } |
2125 | #else |
2126 | seq_puts(m, s: "IO and error counters not compiled in driver.\n" ); |
2127 | #endif |
2128 | return 0; |
2129 | } |
2130 | |
2131 | |
2132 | /** |
2133 | * proc_show_mbox() |
2134 | * @m: Synthetic file construction data |
2135 | * @v: File iterator |
2136 | * |
2137 | * Display mailbox information for the last command issued. This information |
2138 | * is good for debugging. |
2139 | */ |
2140 | static int |
2141 | proc_show_mbox(struct seq_file *m, void *v) |
2142 | { |
2143 | adapter_t *adapter = m->private; |
2144 | volatile mbox_t *mbox = adapter->mbox; |
2145 | |
2146 | seq_puts(m, s: "Contents of Mail Box Structure\n" ); |
2147 | seq_printf(m, fmt: " Fw Command = 0x%02x\n" , mbox->m_out.cmd); |
2148 | seq_printf(m, fmt: " Cmd Sequence = 0x%02x\n" , mbox->m_out.cmdid); |
2149 | seq_printf(m, fmt: " No of Sectors= %04d\n" , mbox->m_out.numsectors); |
2150 | seq_printf(m, fmt: " LBA = 0x%02x\n" , mbox->m_out.lba); |
2151 | seq_printf(m, fmt: " DTA = 0x%08x\n" , mbox->m_out.xferaddr); |
2152 | seq_printf(m, fmt: " Logical Drive= 0x%02x\n" , mbox->m_out.logdrv); |
2153 | seq_printf(m, fmt: " No of SG Elmt= 0x%02x\n" , mbox->m_out.numsgelements); |
2154 | seq_printf(m, fmt: " Busy = %01x\n" , mbox->m_in.busy); |
2155 | seq_printf(m, fmt: " Status = 0x%02x\n" , mbox->m_in.status); |
2156 | return 0; |
2157 | } |
2158 | |
2159 | |
2160 | /** |
2161 | * proc_show_rebuild_rate() |
2162 | * @m: Synthetic file construction data |
2163 | * @v: File iterator |
2164 | * |
2165 | * Display current rebuild rate |
2166 | */ |
2167 | static int |
2168 | proc_show_rebuild_rate(struct seq_file *m, void *v) |
2169 | { |
2170 | adapter_t *adapter = m->private; |
2171 | dma_addr_t dma_handle; |
2172 | caddr_t inquiry; |
2173 | struct pci_dev *pdev; |
2174 | |
2175 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) |
2176 | return 0; |
2177 | |
2178 | if( (inquiry = mega_allocate_inquiry(dma_handle: &dma_handle, pdev)) == NULL ) |
2179 | goto free_pdev; |
2180 | |
2181 | if( mega_adapinq(adapter, dma_handle) != 0 ) { |
2182 | seq_puts(m, s: "Adapter inquiry failed.\n" ); |
2183 | dev_warn(&adapter->dev->dev, "inquiry failed\n" ); |
2184 | goto free_inquiry; |
2185 | } |
2186 | |
2187 | if( adapter->flag & BOARD_40LD ) |
2188 | seq_printf(m, fmt: "Rebuild Rate: [%d%%]\n" , |
2189 | ((mega_inquiry3 *)inquiry)->rebuild_rate); |
2190 | else |
2191 | seq_printf(m, fmt: "Rebuild Rate: [%d%%]\n" , |
2192 | ((mraid_ext_inquiry *) |
2193 | inquiry)->raid_inq.adapter_info.rebuild_rate); |
2194 | |
2195 | free_inquiry: |
2196 | mega_free_inquiry(inquiry, dma_handle, pdev); |
2197 | free_pdev: |
2198 | free_local_pdev(pdev); |
2199 | return 0; |
2200 | } |
2201 | |
2202 | |
2203 | /** |
2204 | * proc_show_battery() |
2205 | * @m: Synthetic file construction data |
2206 | * @v: File iterator |
2207 | * |
2208 | * Display information about the battery module on the controller. |
2209 | */ |
2210 | static int |
2211 | proc_show_battery(struct seq_file *m, void *v) |
2212 | { |
2213 | adapter_t *adapter = m->private; |
2214 | dma_addr_t dma_handle; |
2215 | caddr_t inquiry; |
2216 | struct pci_dev *pdev; |
2217 | u8 battery_status; |
2218 | |
2219 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) |
2220 | return 0; |
2221 | |
2222 | if( (inquiry = mega_allocate_inquiry(dma_handle: &dma_handle, pdev)) == NULL ) |
2223 | goto free_pdev; |
2224 | |
2225 | if( mega_adapinq(adapter, dma_handle) != 0 ) { |
2226 | seq_puts(m, s: "Adapter inquiry failed.\n" ); |
2227 | dev_warn(&adapter->dev->dev, "inquiry failed\n" ); |
2228 | goto free_inquiry; |
2229 | } |
2230 | |
2231 | if( adapter->flag & BOARD_40LD ) { |
2232 | battery_status = ((mega_inquiry3 *)inquiry)->battery_status; |
2233 | } |
2234 | else { |
2235 | battery_status = ((mraid_ext_inquiry *)inquiry)-> |
2236 | raid_inq.adapter_info.battery_status; |
2237 | } |
2238 | |
2239 | /* |
2240 | * Decode the battery status |
2241 | */ |
2242 | seq_printf(m, fmt: "Battery Status:[%d]" , battery_status); |
2243 | |
2244 | if(battery_status == MEGA_BATT_CHARGE_DONE) |
2245 | seq_puts(m, s: " Charge Done" ); |
2246 | |
2247 | if(battery_status & MEGA_BATT_MODULE_MISSING) |
2248 | seq_puts(m, s: " Module Missing" ); |
2249 | |
2250 | if(battery_status & MEGA_BATT_LOW_VOLTAGE) |
2251 | seq_puts(m, s: " Low Voltage" ); |
2252 | |
2253 | if(battery_status & MEGA_BATT_TEMP_HIGH) |
2254 | seq_puts(m, s: " Temperature High" ); |
2255 | |
2256 | if(battery_status & MEGA_BATT_PACK_MISSING) |
2257 | seq_puts(m, s: " Pack Missing" ); |
2258 | |
2259 | if(battery_status & MEGA_BATT_CHARGE_INPROG) |
2260 | seq_puts(m, s: " Charge In-progress" ); |
2261 | |
2262 | if(battery_status & MEGA_BATT_CHARGE_FAIL) |
2263 | seq_puts(m, s: " Charge Fail" ); |
2264 | |
2265 | if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) |
2266 | seq_puts(m, s: " Cycles Exceeded" ); |
2267 | |
2268 | seq_putc(m, c: '\n'); |
2269 | |
2270 | free_inquiry: |
2271 | mega_free_inquiry(inquiry, dma_handle, pdev); |
2272 | free_pdev: |
2273 | free_local_pdev(pdev); |
2274 | return 0; |
2275 | } |
2276 | |
2277 | |
2278 | /* |
2279 | * Display scsi inquiry |
2280 | */ |
2281 | static void |
2282 | mega_print_inquiry(struct seq_file *m, char *scsi_inq) |
2283 | { |
2284 | int i; |
2285 | |
2286 | seq_puts(m, s: " Vendor: " ); |
2287 | seq_write(seq: m, data: scsi_inq + 8, len: 8); |
2288 | seq_puts(m, s: " Model: " ); |
2289 | seq_write(seq: m, data: scsi_inq + 16, len: 16); |
2290 | seq_puts(m, s: " Rev: " ); |
2291 | seq_write(seq: m, data: scsi_inq + 32, len: 4); |
2292 | seq_putc(m, c: '\n'); |
2293 | |
2294 | i = scsi_inq[0] & 0x1f; |
2295 | seq_printf(m, fmt: " Type: %s " , scsi_device_type(type: i)); |
2296 | |
2297 | seq_printf(m, fmt: " ANSI SCSI revision: %02x" , |
2298 | scsi_inq[2] & 0x07); |
2299 | |
2300 | if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) |
2301 | seq_puts(m, s: " CCS\n" ); |
2302 | else |
2303 | seq_putc(m, c: '\n'); |
2304 | } |
2305 | |
2306 | /** |
2307 | * proc_show_pdrv() |
2308 | * @m: Synthetic file construction data |
2309 | * @adapter: pointer to our soft state |
2310 | * @channel: channel |
2311 | * |
2312 | * Display information about the physical drives. |
2313 | */ |
2314 | static int |
2315 | proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) |
2316 | { |
2317 | dma_addr_t dma_handle; |
2318 | char *scsi_inq; |
2319 | dma_addr_t scsi_inq_dma_handle; |
2320 | caddr_t inquiry; |
2321 | struct pci_dev *pdev; |
2322 | u8 *pdrv_state; |
2323 | u8 state; |
2324 | int tgt; |
2325 | int max_channels; |
2326 | int i; |
2327 | |
2328 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) |
2329 | return 0; |
2330 | |
2331 | if( (inquiry = mega_allocate_inquiry(dma_handle: &dma_handle, pdev)) == NULL ) |
2332 | goto free_pdev; |
2333 | |
2334 | if( mega_adapinq(adapter, dma_handle) != 0 ) { |
2335 | seq_puts(m, s: "Adapter inquiry failed.\n" ); |
2336 | dev_warn(&adapter->dev->dev, "inquiry failed\n" ); |
2337 | goto free_inquiry; |
2338 | } |
2339 | |
2340 | |
2341 | scsi_inq = dma_alloc_coherent(dev: &pdev->dev, size: 256, dma_handle: &scsi_inq_dma_handle, |
2342 | GFP_KERNEL); |
2343 | if( scsi_inq == NULL ) { |
2344 | seq_puts(m, s: "memory not available for scsi inq.\n" ); |
2345 | goto free_inquiry; |
2346 | } |
2347 | |
2348 | if( adapter->flag & BOARD_40LD ) { |
2349 | pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; |
2350 | } |
2351 | else { |
2352 | pdrv_state = ((mraid_ext_inquiry *)inquiry)-> |
2353 | raid_inq.pdrv_info.pdrv_state; |
2354 | } |
2355 | |
2356 | max_channels = adapter->product_info.nchannels; |
2357 | |
2358 | if( channel >= max_channels ) { |
2359 | goto free_pci; |
2360 | } |
2361 | |
2362 | for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { |
2363 | |
2364 | i = channel*16 + tgt; |
2365 | |
2366 | state = *(pdrv_state + i); |
2367 | switch( state & 0x0F ) { |
2368 | case PDRV_ONLINE: |
2369 | seq_printf(m, fmt: "Channel:%2d Id:%2d State: Online" , |
2370 | channel, tgt); |
2371 | break; |
2372 | |
2373 | case PDRV_FAILED: |
2374 | seq_printf(m, fmt: "Channel:%2d Id:%2d State: Failed" , |
2375 | channel, tgt); |
2376 | break; |
2377 | |
2378 | case PDRV_RBLD: |
2379 | seq_printf(m, fmt: "Channel:%2d Id:%2d State: Rebuild" , |
2380 | channel, tgt); |
2381 | break; |
2382 | |
2383 | case PDRV_HOTSPARE: |
2384 | seq_printf(m, fmt: "Channel:%2d Id:%2d State: Hot spare" , |
2385 | channel, tgt); |
2386 | break; |
2387 | |
2388 | default: |
2389 | seq_printf(m, fmt: "Channel:%2d Id:%2d State: Un-configured" , |
2390 | channel, tgt); |
2391 | break; |
2392 | } |
2393 | |
2394 | /* |
2395 | * This interface displays inquiries for disk drives |
2396 | * only. Inquries for logical drives and non-disk |
2397 | * devices are available through /proc/scsi/scsi |
2398 | */ |
2399 | memset(scsi_inq, 0, 256); |
2400 | if( mega_internal_dev_inquiry(adapter, channel, tgt, |
2401 | scsi_inq_dma_handle) || |
2402 | (scsi_inq[0] & 0x1F) != TYPE_DISK ) { |
2403 | continue; |
2404 | } |
2405 | |
2406 | /* |
2407 | * Check for overflow. We print less than 240 |
2408 | * characters for inquiry |
2409 | */ |
2410 | seq_puts(m, s: ".\n" ); |
2411 | mega_print_inquiry(m, scsi_inq); |
2412 | } |
2413 | |
2414 | free_pci: |
2415 | dma_free_coherent(dev: &pdev->dev, size: 256, cpu_addr: scsi_inq, dma_handle: scsi_inq_dma_handle); |
2416 | free_inquiry: |
2417 | mega_free_inquiry(inquiry, dma_handle, pdev); |
2418 | free_pdev: |
2419 | free_local_pdev(pdev); |
2420 | return 0; |
2421 | } |
2422 | |
2423 | /** |
2424 | * proc_show_pdrv_ch0() |
2425 | * @m: Synthetic file construction data |
2426 | * @v: File iterator |
2427 | * |
2428 | * Display information about the physical drives on physical channel 0. |
2429 | */ |
2430 | static int |
2431 | proc_show_pdrv_ch0(struct seq_file *m, void *v) |
2432 | { |
2433 | return proc_show_pdrv(m, adapter: m->private, channel: 0); |
2434 | } |
2435 | |
2436 | |
2437 | /** |
2438 | * proc_show_pdrv_ch1() |
2439 | * @m: Synthetic file construction data |
2440 | * @v: File iterator |
2441 | * |
2442 | * Display information about the physical drives on physical channel 1. |
2443 | */ |
2444 | static int |
2445 | proc_show_pdrv_ch1(struct seq_file *m, void *v) |
2446 | { |
2447 | return proc_show_pdrv(m, adapter: m->private, channel: 1); |
2448 | } |
2449 | |
2450 | |
2451 | /** |
2452 | * proc_show_pdrv_ch2() |
2453 | * @m: Synthetic file construction data |
2454 | * @v: File iterator |
2455 | * |
2456 | * Display information about the physical drives on physical channel 2. |
2457 | */ |
2458 | static int |
2459 | proc_show_pdrv_ch2(struct seq_file *m, void *v) |
2460 | { |
2461 | return proc_show_pdrv(m, adapter: m->private, channel: 2); |
2462 | } |
2463 | |
2464 | |
2465 | /** |
2466 | * proc_show_pdrv_ch3() |
2467 | * @m: Synthetic file construction data |
2468 | * @v: File iterator |
2469 | * |
2470 | * Display information about the physical drives on physical channel 3. |
2471 | */ |
2472 | static int |
2473 | proc_show_pdrv_ch3(struct seq_file *m, void *v) |
2474 | { |
2475 | return proc_show_pdrv(m, adapter: m->private, channel: 3); |
2476 | } |
2477 | |
2478 | |
2479 | /** |
2480 | * proc_show_rdrv() |
2481 | * @m: Synthetic file construction data |
2482 | * @adapter: pointer to our soft state |
2483 | * @start: starting logical drive to display |
2484 | * @end: ending logical drive to display |
2485 | * |
2486 | * We do not print the inquiry information since its already available through |
2487 | * /proc/scsi/scsi interface |
2488 | */ |
2489 | static int |
2490 | proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) |
2491 | { |
2492 | dma_addr_t dma_handle; |
2493 | logdrv_param *lparam; |
2494 | megacmd_t mc; |
2495 | char *disk_array; |
2496 | dma_addr_t disk_array_dma_handle; |
2497 | caddr_t inquiry; |
2498 | struct pci_dev *pdev; |
2499 | u8 *rdrv_state; |
2500 | int num_ldrv; |
2501 | u32 array_sz; |
2502 | int i; |
2503 | |
2504 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) |
2505 | return 0; |
2506 | |
2507 | if( (inquiry = mega_allocate_inquiry(dma_handle: &dma_handle, pdev)) == NULL ) |
2508 | goto free_pdev; |
2509 | |
2510 | if( mega_adapinq(adapter, dma_handle) != 0 ) { |
2511 | seq_puts(m, s: "Adapter inquiry failed.\n" ); |
2512 | dev_warn(&adapter->dev->dev, "inquiry failed\n" ); |
2513 | goto free_inquiry; |
2514 | } |
2515 | |
2516 | memset(&mc, 0, sizeof(megacmd_t)); |
2517 | |
2518 | if( adapter->flag & BOARD_40LD ) { |
2519 | array_sz = sizeof(disk_array_40ld); |
2520 | |
2521 | rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; |
2522 | |
2523 | num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; |
2524 | } |
2525 | else { |
2526 | array_sz = sizeof(disk_array_8ld); |
2527 | |
2528 | rdrv_state = ((mraid_ext_inquiry *)inquiry)-> |
2529 | raid_inq.logdrv_info.ldrv_state; |
2530 | |
2531 | num_ldrv = ((mraid_ext_inquiry *)inquiry)-> |
2532 | raid_inq.logdrv_info.num_ldrv; |
2533 | } |
2534 | |
2535 | disk_array = dma_alloc_coherent(dev: &pdev->dev, size: array_sz, |
2536 | dma_handle: &disk_array_dma_handle, GFP_KERNEL); |
2537 | |
2538 | if( disk_array == NULL ) { |
2539 | seq_puts(m, s: "memory not available.\n" ); |
2540 | goto free_inquiry; |
2541 | } |
2542 | |
2543 | mc.xferaddr = (u32)disk_array_dma_handle; |
2544 | |
2545 | if( adapter->flag & BOARD_40LD ) { |
2546 | mc.cmd = FC_NEW_CONFIG; |
2547 | mc.opcode = OP_DCMD_READ_CONFIG; |
2548 | |
2549 | if( mega_internal_command(adapter, &mc, NULL) ) { |
2550 | seq_puts(m, s: "40LD read config failed.\n" ); |
2551 | goto free_pci; |
2552 | } |
2553 | |
2554 | } |
2555 | else { |
2556 | mc.cmd = NEW_READ_CONFIG_8LD; |
2557 | |
2558 | if( mega_internal_command(adapter, &mc, NULL) ) { |
2559 | mc.cmd = READ_CONFIG_8LD; |
2560 | if( mega_internal_command(adapter, &mc, NULL) ) { |
2561 | seq_puts(m, s: "8LD read config failed.\n" ); |
2562 | goto free_pci; |
2563 | } |
2564 | } |
2565 | } |
2566 | |
2567 | for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { |
2568 | |
2569 | if( adapter->flag & BOARD_40LD ) { |
2570 | lparam = |
2571 | &((disk_array_40ld *)disk_array)->ldrv[i].lparam; |
2572 | } |
2573 | else { |
2574 | lparam = |
2575 | &((disk_array_8ld *)disk_array)->ldrv[i].lparam; |
2576 | } |
2577 | |
2578 | /* |
2579 | * Check for overflow. We print less than 240 characters for |
2580 | * information about each logical drive. |
2581 | */ |
2582 | seq_printf(m, fmt: "Logical drive:%2d:, " , i); |
2583 | |
2584 | switch( rdrv_state[i] & 0x0F ) { |
2585 | case RDRV_OFFLINE: |
2586 | seq_puts(m, s: "state: offline" ); |
2587 | break; |
2588 | case RDRV_DEGRADED: |
2589 | seq_puts(m, s: "state: degraded" ); |
2590 | break; |
2591 | case RDRV_OPTIMAL: |
2592 | seq_puts(m, s: "state: optimal" ); |
2593 | break; |
2594 | case RDRV_DELETED: |
2595 | seq_puts(m, s: "state: deleted" ); |
2596 | break; |
2597 | default: |
2598 | seq_puts(m, s: "state: unknown" ); |
2599 | break; |
2600 | } |
2601 | |
2602 | /* |
2603 | * Check if check consistency or initialization is going on |
2604 | * for this logical drive. |
2605 | */ |
2606 | if( (rdrv_state[i] & 0xF0) == 0x20 ) |
2607 | seq_puts(m, s: ", check-consistency in progress" ); |
2608 | else if( (rdrv_state[i] & 0xF0) == 0x10 ) |
2609 | seq_puts(m, s: ", initialization in progress" ); |
2610 | |
2611 | seq_putc(m, c: '\n'); |
2612 | |
2613 | seq_printf(m, fmt: "Span depth:%3d, " , lparam->span_depth); |
2614 | seq_printf(m, fmt: "RAID level:%3d, " , lparam->level); |
2615 | seq_printf(m, fmt: "Stripe size:%3d, " , |
2616 | lparam->stripe_sz ? lparam->stripe_sz/2: 128); |
2617 | seq_printf(m, fmt: "Row size:%3d\n" , lparam->row_size); |
2618 | |
2619 | seq_puts(m, s: "Read Policy: " ); |
2620 | switch(lparam->read_ahead) { |
2621 | case NO_READ_AHEAD: |
2622 | seq_puts(m, s: "No read ahead, " ); |
2623 | break; |
2624 | case READ_AHEAD: |
2625 | seq_puts(m, s: "Read ahead, " ); |
2626 | break; |
2627 | case ADAP_READ_AHEAD: |
2628 | seq_puts(m, s: "Adaptive, " ); |
2629 | break; |
2630 | |
2631 | } |
2632 | |
2633 | seq_puts(m, s: "Write Policy: " ); |
2634 | switch(lparam->write_mode) { |
2635 | case WRMODE_WRITE_THRU: |
2636 | seq_puts(m, s: "Write thru, " ); |
2637 | break; |
2638 | case WRMODE_WRITE_BACK: |
2639 | seq_puts(m, s: "Write back, " ); |
2640 | break; |
2641 | } |
2642 | |
2643 | seq_puts(m, s: "Cache Policy: " ); |
2644 | switch(lparam->direct_io) { |
2645 | case CACHED_IO: |
2646 | seq_puts(m, s: "Cached IO\n\n" ); |
2647 | break; |
2648 | case DIRECT_IO: |
2649 | seq_puts(m, s: "Direct IO\n\n" ); |
2650 | break; |
2651 | } |
2652 | } |
2653 | |
2654 | free_pci: |
2655 | dma_free_coherent(dev: &pdev->dev, size: array_sz, cpu_addr: disk_array, |
2656 | dma_handle: disk_array_dma_handle); |
2657 | free_inquiry: |
2658 | mega_free_inquiry(inquiry, dma_handle, pdev); |
2659 | free_pdev: |
2660 | free_local_pdev(pdev); |
2661 | return 0; |
2662 | } |
2663 | |
2664 | /** |
2665 | * proc_show_rdrv_10() |
2666 | * @m: Synthetic file construction data |
2667 | * @v: File iterator |
2668 | * |
2669 | * Display real time information about the logical drives 0 through 9. |
2670 | */ |
2671 | static int |
2672 | proc_show_rdrv_10(struct seq_file *m, void *v) |
2673 | { |
2674 | return proc_show_rdrv(m, adapter: m->private, start: 0, end: 9); |
2675 | } |
2676 | |
2677 | |
2678 | /** |
2679 | * proc_show_rdrv_20() |
2680 | * @m: Synthetic file construction data |
2681 | * @v: File iterator |
2682 | * |
2683 | * Display real time information about the logical drives 0 through 9. |
2684 | */ |
2685 | static int |
2686 | proc_show_rdrv_20(struct seq_file *m, void *v) |
2687 | { |
2688 | return proc_show_rdrv(m, adapter: m->private, start: 10, end: 19); |
2689 | } |
2690 | |
2691 | |
2692 | /** |
2693 | * proc_show_rdrv_30() |
2694 | * @m: Synthetic file construction data |
2695 | * @v: File iterator |
2696 | * |
2697 | * Display real time information about the logical drives 0 through 9. |
2698 | */ |
2699 | static int |
2700 | proc_show_rdrv_30(struct seq_file *m, void *v) |
2701 | { |
2702 | return proc_show_rdrv(m, adapter: m->private, start: 20, end: 29); |
2703 | } |
2704 | |
2705 | |
2706 | /** |
2707 | * proc_show_rdrv_40() |
2708 | * @m: Synthetic file construction data |
2709 | * @v: File iterator |
2710 | * |
2711 | * Display real time information about the logical drives 0 through 9. |
2712 | */ |
2713 | static int |
2714 | proc_show_rdrv_40(struct seq_file *m, void *v) |
2715 | { |
2716 | return proc_show_rdrv(m, adapter: m->private, start: 30, end: 39); |
2717 | } |
2718 | |
2719 | /** |
2720 | * mega_create_proc_entry() |
2721 | * @index: index in soft state array |
2722 | * @parent: parent node for this /proc entry |
2723 | * |
2724 | * Creates /proc entries for our controllers. |
2725 | */ |
2726 | static void |
2727 | mega_create_proc_entry(int index, struct proc_dir_entry *parent) |
2728 | { |
2729 | adapter_t *adapter = hba_soft_state[index]; |
2730 | struct proc_dir_entry *dir; |
2731 | u8 string[16]; |
2732 | |
2733 | sprintf(buf: string, fmt: "hba%d" , adapter->host->host_no); |
2734 | dir = proc_mkdir_data(string, 0, parent, adapter); |
2735 | if (!dir) { |
2736 | dev_warn(&adapter->dev->dev, "proc_mkdir failed\n" ); |
2737 | return; |
2738 | } |
2739 | |
2740 | proc_create_single_data(name: "config" , S_IRUSR, parent: dir, |
2741 | show: proc_show_config, data: adapter); |
2742 | proc_create_single_data(name: "stat" , S_IRUSR, parent: dir, |
2743 | show: proc_show_stat, data: adapter); |
2744 | proc_create_single_data(name: "mailbox" , S_IRUSR, parent: dir, |
2745 | show: proc_show_mbox, data: adapter); |
2746 | #if MEGA_HAVE_ENH_PROC |
2747 | proc_create_single_data(name: "rebuild-rate" , S_IRUSR, parent: dir, |
2748 | show: proc_show_rebuild_rate, data: adapter); |
2749 | proc_create_single_data(name: "battery-status" , S_IRUSR, parent: dir, |
2750 | show: proc_show_battery, data: adapter); |
2751 | proc_create_single_data(name: "diskdrives-ch0" , S_IRUSR, parent: dir, |
2752 | show: proc_show_pdrv_ch0, data: adapter); |
2753 | proc_create_single_data(name: "diskdrives-ch1" , S_IRUSR, parent: dir, |
2754 | show: proc_show_pdrv_ch1, data: adapter); |
2755 | proc_create_single_data(name: "diskdrives-ch2" , S_IRUSR, parent: dir, |
2756 | show: proc_show_pdrv_ch2, data: adapter); |
2757 | proc_create_single_data(name: "diskdrives-ch3" , S_IRUSR, parent: dir, |
2758 | show: proc_show_pdrv_ch3, data: adapter); |
2759 | proc_create_single_data(name: "raiddrives-0-9" , S_IRUSR, parent: dir, |
2760 | show: proc_show_rdrv_10, data: adapter); |
2761 | proc_create_single_data(name: "raiddrives-10-19" , S_IRUSR, parent: dir, |
2762 | show: proc_show_rdrv_20, data: adapter); |
2763 | proc_create_single_data(name: "raiddrives-20-29" , S_IRUSR, parent: dir, |
2764 | show: proc_show_rdrv_30, data: adapter); |
2765 | proc_create_single_data(name: "raiddrives-30-39" , S_IRUSR, parent: dir, |
2766 | show: proc_show_rdrv_40, data: adapter); |
2767 | #endif |
2768 | } |
2769 | |
2770 | #else |
2771 | static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) |
2772 | { |
2773 | } |
2774 | #endif |
2775 | |
2776 | |
2777 | /* |
2778 | * megaraid_biosparam() |
2779 | * |
2780 | * Return the disk geometry for a particular disk |
2781 | */ |
2782 | static int |
2783 | megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
2784 | sector_t capacity, int geom[]) |
2785 | { |
2786 | adapter_t *adapter; |
2787 | int heads; |
2788 | int sectors; |
2789 | int cylinders; |
2790 | |
2791 | /* Get pointer to host config structure */ |
2792 | adapter = (adapter_t *)sdev->host->hostdata; |
2793 | |
2794 | if (IS_RAID_CH(adapter, sdev->channel)) { |
2795 | /* Default heads (64) & sectors (32) */ |
2796 | heads = 64; |
2797 | sectors = 32; |
2798 | cylinders = (ulong)capacity / (heads * sectors); |
2799 | |
2800 | /* |
2801 | * Handle extended translation size for logical drives |
2802 | * > 1Gb |
2803 | */ |
2804 | if ((ulong)capacity >= 0x200000) { |
2805 | heads = 255; |
2806 | sectors = 63; |
2807 | cylinders = (ulong)capacity / (heads * sectors); |
2808 | } |
2809 | |
2810 | /* return result */ |
2811 | geom[0] = heads; |
2812 | geom[1] = sectors; |
2813 | geom[2] = cylinders; |
2814 | } |
2815 | else { |
2816 | if (scsi_partsize(bdev, capacity, geom)) |
2817 | return 0; |
2818 | |
2819 | dev_info(&adapter->dev->dev, |
2820 | "invalid partition on this disk on channel %d\n" , |
2821 | sdev->channel); |
2822 | |
2823 | /* Default heads (64) & sectors (32) */ |
2824 | heads = 64; |
2825 | sectors = 32; |
2826 | cylinders = (ulong)capacity / (heads * sectors); |
2827 | |
2828 | /* Handle extended translation size for logical drives > 1Gb */ |
2829 | if ((ulong)capacity >= 0x200000) { |
2830 | heads = 255; |
2831 | sectors = 63; |
2832 | cylinders = (ulong)capacity / (heads * sectors); |
2833 | } |
2834 | |
2835 | /* return result */ |
2836 | geom[0] = heads; |
2837 | geom[1] = sectors; |
2838 | geom[2] = cylinders; |
2839 | } |
2840 | |
2841 | return 0; |
2842 | } |
2843 | |
2844 | /** |
2845 | * mega_init_scb() |
2846 | * @adapter: pointer to our soft state |
2847 | * |
2848 | * Allocate memory for the various pointers in the scb structures: |
2849 | * scatter-gather list pointer, passthru and extended passthru structure |
2850 | * pointers. |
2851 | */ |
2852 | static int |
2853 | mega_init_scb(adapter_t *adapter) |
2854 | { |
2855 | scb_t *scb; |
2856 | int i; |
2857 | |
2858 | for( i = 0; i < adapter->max_cmds; i++ ) { |
2859 | |
2860 | scb = &adapter->scb_list[i]; |
2861 | |
2862 | scb->sgl64 = NULL; |
2863 | scb->sgl = NULL; |
2864 | scb->pthru = NULL; |
2865 | scb->epthru = NULL; |
2866 | } |
2867 | |
2868 | for( i = 0; i < adapter->max_cmds; i++ ) { |
2869 | |
2870 | scb = &adapter->scb_list[i]; |
2871 | |
2872 | scb->idx = i; |
2873 | |
2874 | scb->sgl64 = dma_alloc_coherent(dev: &adapter->dev->dev, |
2875 | size: sizeof(mega_sgl64) * adapter->sglen, |
2876 | dma_handle: &scb->sgl_dma_addr, GFP_KERNEL); |
2877 | |
2878 | scb->sgl = (mega_sglist *)scb->sgl64; |
2879 | |
2880 | if( !scb->sgl ) { |
2881 | dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n" ); |
2882 | mega_free_sgl(adapter); |
2883 | return -1; |
2884 | } |
2885 | |
2886 | scb->pthru = dma_alloc_coherent(dev: &adapter->dev->dev, |
2887 | size: sizeof(mega_passthru), |
2888 | dma_handle: &scb->pthru_dma_addr, GFP_KERNEL); |
2889 | |
2890 | if( !scb->pthru ) { |
2891 | dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n" ); |
2892 | mega_free_sgl(adapter); |
2893 | return -1; |
2894 | } |
2895 | |
2896 | scb->epthru = dma_alloc_coherent(dev: &adapter->dev->dev, |
2897 | size: sizeof(mega_ext_passthru), |
2898 | dma_handle: &scb->epthru_dma_addr, GFP_KERNEL); |
2899 | |
2900 | if( !scb->epthru ) { |
2901 | dev_warn(&adapter->dev->dev, |
2902 | "Can't allocate extended passthru\n" ); |
2903 | mega_free_sgl(adapter); |
2904 | return -1; |
2905 | } |
2906 | |
2907 | |
2908 | scb->dma_type = MEGA_DMA_TYPE_NONE; |
2909 | |
2910 | /* |
2911 | * Link to free list |
2912 | * lock not required since we are loading the driver, so no |
2913 | * commands possible right now. |
2914 | */ |
2915 | scb->state = SCB_FREE; |
2916 | scb->cmd = NULL; |
2917 | list_add(new: &scb->list, head: &adapter->free_list); |
2918 | } |
2919 | |
2920 | return 0; |
2921 | } |
2922 | |
2923 | |
2924 | /** |
2925 | * megadev_open() |
2926 | * @inode: unused |
2927 | * @filep: unused |
2928 | * |
2929 | * Routines for the character/ioctl interface to the driver. Find out if this |
2930 | * is a valid open. |
2931 | */ |
2932 | static int |
2933 | megadev_open (struct inode *inode, struct file *filep) |
2934 | { |
2935 | /* |
2936 | * Only allow superuser to access private ioctl interface |
2937 | */ |
2938 | if( !capable(CAP_SYS_ADMIN) ) return -EACCES; |
2939 | |
2940 | return 0; |
2941 | } |
2942 | |
2943 | |
2944 | /** |
2945 | * megadev_ioctl() |
2946 | * @filep: Our device file |
2947 | * @cmd: ioctl command |
2948 | * @arg: user buffer |
2949 | * |
2950 | * ioctl entry point for our private ioctl interface. We move the data in from |
2951 | * the user space, prepare the command (if necessary, convert the old MIMD |
2952 | * ioctl to new ioctl command), and issue a synchronous command to the |
2953 | * controller. |
2954 | */ |
2955 | static int |
2956 | megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) |
2957 | { |
2958 | adapter_t *adapter; |
2959 | nitioctl_t uioc; |
2960 | int adapno; |
2961 | int rval; |
2962 | mega_passthru __user *upthru; /* user address for passthru */ |
2963 | mega_passthru *pthru; /* copy user passthru here */ |
2964 | dma_addr_t pthru_dma_hndl; |
2965 | void *data = NULL; /* data to be transferred */ |
2966 | dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ |
2967 | megacmd_t mc; |
2968 | #if MEGA_HAVE_STATS |
2969 | megastat_t __user *ustats = NULL; |
2970 | int num_ldrv = 0; |
2971 | #endif |
2972 | u32 uxferaddr = 0; |
2973 | struct pci_dev *pdev; |
2974 | |
2975 | /* |
2976 | * Make sure only USCSICMD are issued through this interface. |
2977 | * MIMD application would still fire different command. |
2978 | */ |
2979 | if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { |
2980 | return -EINVAL; |
2981 | } |
2982 | |
2983 | /* |
2984 | * Check and convert a possible MIMD command to NIT command. |
2985 | * mega_m_to_n() copies the data from the user space, so we do not |
2986 | * have to do it here. |
2987 | * NOTE: We will need some user address to copyout the data, therefore |
2988 | * the inteface layer will also provide us with the required user |
2989 | * addresses. |
2990 | */ |
2991 | memset(&uioc, 0, sizeof(nitioctl_t)); |
2992 | if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) |
2993 | return rval; |
2994 | |
2995 | |
2996 | switch( uioc.opcode ) { |
2997 | |
2998 | case GET_DRIVER_VER: |
2999 | if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) |
3000 | return (-EFAULT); |
3001 | |
3002 | break; |
3003 | |
3004 | case GET_N_ADAP: |
3005 | if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) |
3006 | return (-EFAULT); |
3007 | |
3008 | /* |
3009 | * Shucks. MIMD interface returns a positive value for number |
3010 | * of adapters. TODO: Change it to return 0 when there is no |
3011 | * applicatio using mimd interface. |
3012 | */ |
3013 | return hba_count; |
3014 | |
3015 | case GET_ADAP_INFO: |
3016 | |
3017 | /* |
3018 | * Which adapter |
3019 | */ |
3020 | if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
3021 | return (-ENODEV); |
3022 | |
3023 | if( copy_to_user(to: uioc.uioc_uaddr, from: mcontroller+adapno, |
3024 | n: sizeof(struct mcontroller)) ) |
3025 | return (-EFAULT); |
3026 | break; |
3027 | |
3028 | #if MEGA_HAVE_STATS |
3029 | |
3030 | case GET_STATS: |
3031 | /* |
3032 | * Which adapter |
3033 | */ |
3034 | if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
3035 | return (-ENODEV); |
3036 | |
3037 | adapter = hba_soft_state[adapno]; |
3038 | |
3039 | ustats = uioc.uioc_uaddr; |
3040 | |
3041 | if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) |
3042 | return (-EFAULT); |
3043 | |
3044 | /* |
3045 | * Check for the validity of the logical drive number |
3046 | */ |
3047 | if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; |
3048 | |
3049 | if( copy_to_user(ustats->nreads, adapter->nreads, |
3050 | num_ldrv*sizeof(u32)) ) |
3051 | return -EFAULT; |
3052 | |
3053 | if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, |
3054 | num_ldrv*sizeof(u32)) ) |
3055 | return -EFAULT; |
3056 | |
3057 | if( copy_to_user(ustats->nwrites, adapter->nwrites, |
3058 | num_ldrv*sizeof(u32)) ) |
3059 | return -EFAULT; |
3060 | |
3061 | if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, |
3062 | num_ldrv*sizeof(u32)) ) |
3063 | return -EFAULT; |
3064 | |
3065 | if( copy_to_user(ustats->rd_errors, adapter->rd_errors, |
3066 | num_ldrv*sizeof(u32)) ) |
3067 | return -EFAULT; |
3068 | |
3069 | if( copy_to_user(ustats->wr_errors, adapter->wr_errors, |
3070 | num_ldrv*sizeof(u32)) ) |
3071 | return -EFAULT; |
3072 | |
3073 | return 0; |
3074 | |
3075 | #endif |
3076 | case MBOX_CMD: |
3077 | |
3078 | /* |
3079 | * Which adapter |
3080 | */ |
3081 | if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
3082 | return (-ENODEV); |
3083 | |
3084 | adapter = hba_soft_state[adapno]; |
3085 | |
3086 | /* |
3087 | * Deletion of logical drive is a special case. The adapter |
3088 | * should be quiescent before this command is issued. |
3089 | */ |
3090 | if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && |
3091 | uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { |
3092 | |
3093 | /* |
3094 | * Do we support this feature |
3095 | */ |
3096 | if( !adapter->support_random_del ) { |
3097 | dev_warn(&adapter->dev->dev, "logdrv " |
3098 | "delete on non-supporting F/W\n" ); |
3099 | |
3100 | return (-EINVAL); |
3101 | } |
3102 | |
3103 | rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); |
3104 | |
3105 | if( rval == 0 ) { |
3106 | memset(&mc, 0, sizeof(megacmd_t)); |
3107 | |
3108 | mc.status = rval; |
3109 | |
3110 | rval = mega_n_to_m((void __user *)arg, &mc); |
3111 | } |
3112 | |
3113 | return rval; |
3114 | } |
3115 | /* |
3116 | * This interface only support the regular passthru commands. |
3117 | * Reject extended passthru and 64-bit passthru |
3118 | */ |
3119 | if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || |
3120 | uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { |
3121 | |
3122 | dev_warn(&adapter->dev->dev, "rejected passthru\n" ); |
3123 | |
3124 | return (-EINVAL); |
3125 | } |
3126 | |
3127 | /* |
3128 | * For all internal commands, the buffer must be allocated in |
3129 | * <4GB address range |
3130 | */ |
3131 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) |
3132 | return -EIO; |
3133 | |
3134 | /* Is it a passthru command or a DCMD */ |
3135 | if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { |
3136 | /* Passthru commands */ |
3137 | |
3138 | pthru = dma_alloc_coherent(dev: &pdev->dev, |
3139 | size: sizeof(mega_passthru), |
3140 | dma_handle: &pthru_dma_hndl, GFP_KERNEL); |
3141 | |
3142 | if( pthru == NULL ) { |
3143 | free_local_pdev(pdev); |
3144 | return (-ENOMEM); |
3145 | } |
3146 | |
3147 | /* |
3148 | * The user passthru structure |
3149 | */ |
3150 | upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; |
3151 | |
3152 | /* |
3153 | * Copy in the user passthru here. |
3154 | */ |
3155 | if( copy_from_user(to: pthru, from: upthru, |
3156 | n: sizeof(mega_passthru)) ) { |
3157 | |
3158 | dma_free_coherent(dev: &pdev->dev, |
3159 | size: sizeof(mega_passthru), |
3160 | cpu_addr: pthru, dma_handle: pthru_dma_hndl); |
3161 | |
3162 | free_local_pdev(pdev); |
3163 | |
3164 | return (-EFAULT); |
3165 | } |
3166 | |
3167 | /* |
3168 | * Is there a data transfer |
3169 | */ |
3170 | if( pthru->dataxferlen ) { |
3171 | data = dma_alloc_coherent(dev: &pdev->dev, |
3172 | size: pthru->dataxferlen, |
3173 | dma_handle: &data_dma_hndl, |
3174 | GFP_KERNEL); |
3175 | |
3176 | if( data == NULL ) { |
3177 | dma_free_coherent(dev: &pdev->dev, |
3178 | size: sizeof(mega_passthru), |
3179 | cpu_addr: pthru, |
3180 | dma_handle: pthru_dma_hndl); |
3181 | |
3182 | free_local_pdev(pdev); |
3183 | |
3184 | return (-ENOMEM); |
3185 | } |
3186 | |
3187 | /* |
3188 | * Save the user address and point the kernel |
3189 | * address at just allocated memory |
3190 | */ |
3191 | uxferaddr = pthru->dataxferaddr; |
3192 | pthru->dataxferaddr = data_dma_hndl; |
3193 | } |
3194 | |
3195 | |
3196 | /* |
3197 | * Is data coming down-stream |
3198 | */ |
3199 | if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { |
3200 | /* |
3201 | * Get the user data |
3202 | */ |
3203 | if( copy_from_user(to: data, from: (char __user *)(unsigned long) uxferaddr, |
3204 | n: pthru->dataxferlen) ) { |
3205 | rval = (-EFAULT); |
3206 | goto freemem_and_return; |
3207 | } |
3208 | } |
3209 | |
3210 | memset(&mc, 0, sizeof(megacmd_t)); |
3211 | |
3212 | mc.cmd = MEGA_MBOXCMD_PASSTHRU; |
3213 | mc.xferaddr = (u32)pthru_dma_hndl; |
3214 | |
3215 | /* |
3216 | * Issue the command |
3217 | */ |
3218 | mega_internal_command(adapter, &mc, pthru); |
3219 | |
3220 | rval = mega_n_to_m((void __user *)arg, &mc); |
3221 | |
3222 | if( rval ) goto freemem_and_return; |
3223 | |
3224 | |
3225 | /* |
3226 | * Is data going up-stream |
3227 | */ |
3228 | if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { |
3229 | if( copy_to_user(to: (char __user *)(unsigned long) uxferaddr, from: data, |
3230 | n: pthru->dataxferlen) ) { |
3231 | rval = (-EFAULT); |
3232 | } |
3233 | } |
3234 | |
3235 | /* |
3236 | * Send the request sense data also, irrespective of |
3237 | * whether the user has asked for it or not. |
3238 | */ |
3239 | if (copy_to_user(to: upthru->reqsensearea, |
3240 | from: pthru->reqsensearea, n: 14)) |
3241 | rval = -EFAULT; |
3242 | |
3243 | freemem_and_return: |
3244 | if( pthru->dataxferlen ) { |
3245 | dma_free_coherent(dev: &pdev->dev, |
3246 | size: pthru->dataxferlen, cpu_addr: data, |
3247 | dma_handle: data_dma_hndl); |
3248 | } |
3249 | |
3250 | dma_free_coherent(dev: &pdev->dev, size: sizeof(mega_passthru), |
3251 | cpu_addr: pthru, dma_handle: pthru_dma_hndl); |
3252 | |
3253 | free_local_pdev(pdev); |
3254 | |
3255 | return rval; |
3256 | } |
3257 | else { |
3258 | /* DCMD commands */ |
3259 | |
3260 | /* |
3261 | * Is there a data transfer |
3262 | */ |
3263 | if( uioc.xferlen ) { |
3264 | data = dma_alloc_coherent(dev: &pdev->dev, |
3265 | size: uioc.xferlen, |
3266 | dma_handle: &data_dma_hndl, |
3267 | GFP_KERNEL); |
3268 | |
3269 | if( data == NULL ) { |
3270 | free_local_pdev(pdev); |
3271 | return (-ENOMEM); |
3272 | } |
3273 | |
3274 | uxferaddr = MBOX(uioc)->xferaddr; |
3275 | } |
3276 | |
3277 | /* |
3278 | * Is data coming down-stream |
3279 | */ |
3280 | if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { |
3281 | /* |
3282 | * Get the user data |
3283 | */ |
3284 | if( copy_from_user(to: data, from: (char __user *)(unsigned long) uxferaddr, |
3285 | n: uioc.xferlen) ) { |
3286 | |
3287 | dma_free_coherent(dev: &pdev->dev, |
3288 | size: uioc.xferlen, cpu_addr: data, |
3289 | dma_handle: data_dma_hndl); |
3290 | |
3291 | free_local_pdev(pdev); |
3292 | |
3293 | return (-EFAULT); |
3294 | } |
3295 | } |
3296 | |
3297 | memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); |
3298 | |
3299 | mc.xferaddr = (u32)data_dma_hndl; |
3300 | |
3301 | /* |
3302 | * Issue the command |
3303 | */ |
3304 | mega_internal_command(adapter, &mc, NULL); |
3305 | |
3306 | rval = mega_n_to_m((void __user *)arg, &mc); |
3307 | |
3308 | if( rval ) { |
3309 | if( uioc.xferlen ) { |
3310 | dma_free_coherent(dev: &pdev->dev, |
3311 | size: uioc.xferlen, cpu_addr: data, |
3312 | dma_handle: data_dma_hndl); |
3313 | } |
3314 | |
3315 | free_local_pdev(pdev); |
3316 | |
3317 | return rval; |
3318 | } |
3319 | |
3320 | /* |
3321 | * Is data going up-stream |
3322 | */ |
3323 | if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { |
3324 | if( copy_to_user(to: (char __user *)(unsigned long) uxferaddr, from: data, |
3325 | n: uioc.xferlen) ) { |
3326 | |
3327 | rval = (-EFAULT); |
3328 | } |
3329 | } |
3330 | |
3331 | if( uioc.xferlen ) { |
3332 | dma_free_coherent(dev: &pdev->dev, size: uioc.xferlen, |
3333 | cpu_addr: data, dma_handle: data_dma_hndl); |
3334 | } |
3335 | |
3336 | free_local_pdev(pdev); |
3337 | |
3338 | return rval; |
3339 | } |
3340 | |
3341 | default: |
3342 | return (-EINVAL); |
3343 | } |
3344 | |
3345 | return 0; |
3346 | } |
3347 | |
3348 | static long |
3349 | megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) |
3350 | { |
3351 | int ret; |
3352 | |
3353 | mutex_lock(&megadev_mutex); |
3354 | ret = megadev_ioctl(filep, cmd, arg); |
3355 | mutex_unlock(lock: &megadev_mutex); |
3356 | |
3357 | return ret; |
3358 | } |
3359 | |
3360 | /** |
3361 | * mega_m_to_n() |
3362 | * @arg: user address |
3363 | * @uioc: new ioctl structure |
3364 | * |
3365 | * A thin layer to convert older mimd interface ioctl structure to NIT ioctl |
3366 | * structure |
3367 | * |
3368 | * Converts the older mimd ioctl structure to newer NIT structure |
3369 | */ |
3370 | static int |
3371 | mega_m_to_n(void __user *arg, nitioctl_t *uioc) |
3372 | { |
3373 | struct uioctl_t uioc_mimd; |
3374 | char signature[8] = {0}; |
3375 | u8 opcode; |
3376 | u8 subopcode; |
3377 | |
3378 | |
3379 | /* |
3380 | * check is the application conforms to NIT. We do not have to do much |
3381 | * in that case. |
3382 | * We exploit the fact that the signature is stored in the very |
3383 | * beginning of the structure. |
3384 | */ |
3385 | |
3386 | if( copy_from_user(to: signature, from: arg, n: 7) ) |
3387 | return (-EFAULT); |
3388 | |
3389 | if( memcmp(p: signature, q: "MEGANIT" , size: 7) == 0 ) { |
3390 | |
3391 | /* |
3392 | * NOTE NOTE: The nit ioctl is still under flux because of |
3393 | * change of mailbox definition, in HPE. No applications yet |
3394 | * use this interface and let's not have applications use this |
3395 | * interface till the new specifitions are in place. |
3396 | */ |
3397 | return -EINVAL; |
3398 | #if 0 |
3399 | if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) |
3400 | return (-EFAULT); |
3401 | return 0; |
3402 | #endif |
3403 | } |
3404 | |
3405 | /* |
3406 | * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t |
3407 | * |
3408 | * Get the user ioctl structure |
3409 | */ |
3410 | if( copy_from_user(to: &uioc_mimd, from: arg, n: sizeof(struct uioctl_t)) ) |
3411 | return (-EFAULT); |
3412 | |
3413 | |
3414 | /* |
3415 | * Get the opcode and subopcode for the commands |
3416 | */ |
3417 | opcode = uioc_mimd.ui.fcs.opcode; |
3418 | subopcode = uioc_mimd.ui.fcs.subopcode; |
3419 | |
3420 | switch (opcode) { |
3421 | case 0x82: |
3422 | |
3423 | switch (subopcode) { |
3424 | |
3425 | case MEGAIOC_QDRVRVER: /* Query driver version */ |
3426 | uioc->opcode = GET_DRIVER_VER; |
3427 | uioc->uioc_uaddr = uioc_mimd.data; |
3428 | break; |
3429 | |
3430 | case MEGAIOC_QNADAP: /* Get # of adapters */ |
3431 | uioc->opcode = GET_N_ADAP; |
3432 | uioc->uioc_uaddr = uioc_mimd.data; |
3433 | break; |
3434 | |
3435 | case MEGAIOC_QADAPINFO: /* Get adapter information */ |
3436 | uioc->opcode = GET_ADAP_INFO; |
3437 | uioc->adapno = uioc_mimd.ui.fcs.adapno; |
3438 | uioc->uioc_uaddr = uioc_mimd.data; |
3439 | break; |
3440 | |
3441 | default: |
3442 | return(-EINVAL); |
3443 | } |
3444 | |
3445 | break; |
3446 | |
3447 | |
3448 | case 0x81: |
3449 | |
3450 | uioc->opcode = MBOX_CMD; |
3451 | uioc->adapno = uioc_mimd.ui.fcs.adapno; |
3452 | |
3453 | memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); |
3454 | |
3455 | uioc->xferlen = uioc_mimd.ui.fcs.length; |
3456 | |
3457 | if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; |
3458 | if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; |
3459 | |
3460 | break; |
3461 | |
3462 | case 0x80: |
3463 | |
3464 | uioc->opcode = MBOX_CMD; |
3465 | uioc->adapno = uioc_mimd.ui.fcs.adapno; |
3466 | |
3467 | memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); |
3468 | |
3469 | /* |
3470 | * Choose the xferlen bigger of input and output data |
3471 | */ |
3472 | uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? |
3473 | uioc_mimd.outlen : uioc_mimd.inlen; |
3474 | |
3475 | if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; |
3476 | if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; |
3477 | |
3478 | break; |
3479 | |
3480 | default: |
3481 | return (-EINVAL); |
3482 | |
3483 | } |
3484 | |
3485 | return 0; |
3486 | } |
3487 | |
3488 | /* |
3489 | * mega_n_to_m() |
3490 | * @arg: user address |
3491 | * @mc: mailbox command |
3492 | * |
3493 | * Updates the status information to the application, depending on application |
3494 | * conforms to older mimd ioctl interface or newer NIT ioctl interface |
3495 | */ |
3496 | static int |
3497 | mega_n_to_m(void __user *arg, megacmd_t *mc) |
3498 | { |
3499 | nitioctl_t __user *uiocp; |
3500 | megacmd_t __user *umc; |
3501 | mega_passthru __user *upthru; |
3502 | struct uioctl_t __user *uioc_mimd; |
3503 | char signature[8] = {0}; |
3504 | |
3505 | /* |
3506 | * check is the application conforms to NIT. |
3507 | */ |
3508 | if( copy_from_user(to: signature, from: arg, n: 7) ) |
3509 | return -EFAULT; |
3510 | |
3511 | if( memcmp(p: signature, q: "MEGANIT" , size: 7) == 0 ) { |
3512 | |
3513 | uiocp = arg; |
3514 | |
3515 | if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) |
3516 | return (-EFAULT); |
3517 | |
3518 | if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { |
3519 | |
3520 | umc = MBOX_P(uiocp); |
3521 | |
3522 | if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) |
3523 | return -EFAULT; |
3524 | |
3525 | if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) |
3526 | return (-EFAULT); |
3527 | } |
3528 | } |
3529 | else { |
3530 | uioc_mimd = arg; |
3531 | |
3532 | if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) |
3533 | return (-EFAULT); |
3534 | |
3535 | if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { |
3536 | |
3537 | umc = (megacmd_t __user *)uioc_mimd->mbox; |
3538 | |
3539 | if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) |
3540 | return (-EFAULT); |
3541 | |
3542 | if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) |
3543 | return (-EFAULT); |
3544 | } |
3545 | } |
3546 | |
3547 | return 0; |
3548 | } |
3549 | |
3550 | |
3551 | /* |
3552 | * MEGARAID 'FW' commands. |
3553 | */ |
3554 | |
3555 | /** |
3556 | * mega_is_bios_enabled() |
3557 | * @adapter: pointer to our soft state |
3558 | * |
3559 | * issue command to find out if the BIOS is enabled for this controller |
3560 | */ |
3561 | static int |
3562 | mega_is_bios_enabled(adapter_t *adapter) |
3563 | { |
3564 | struct mbox_out mbox; |
3565 | unsigned char *raw_mbox = (u8 *)&mbox; |
3566 | |
3567 | memset(&mbox, 0, sizeof(mbox)); |
3568 | |
3569 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
3570 | |
3571 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
3572 | |
3573 | raw_mbox[0] = IS_BIOS_ENABLED; |
3574 | raw_mbox[2] = GET_BIOS; |
3575 | |
3576 | issue_scb_block(adapter, raw_mbox); |
3577 | |
3578 | return *(char *)adapter->mega_buffer; |
3579 | } |
3580 | |
3581 | |
3582 | /** |
3583 | * mega_enum_raid_scsi() |
3584 | * @adapter: pointer to our soft state |
3585 | * |
3586 | * Find out what channels are RAID/SCSI. This information is used to |
3587 | * differentiate the virtual channels and physical channels and to support |
3588 | * ROMB feature and non-disk devices. |
3589 | */ |
3590 | static void |
3591 | mega_enum_raid_scsi(adapter_t *adapter) |
3592 | { |
3593 | struct mbox_out mbox; |
3594 | unsigned char *raw_mbox = (u8 *)&mbox; |
3595 | int i; |
3596 | |
3597 | memset(&mbox, 0, sizeof(mbox)); |
3598 | |
3599 | /* |
3600 | * issue command to find out what channels are raid/scsi |
3601 | */ |
3602 | raw_mbox[0] = CHNL_CLASS; |
3603 | raw_mbox[2] = GET_CHNL_CLASS; |
3604 | |
3605 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
3606 | |
3607 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
3608 | |
3609 | /* |
3610 | * Non-ROMB firmware fail this command, so all channels |
3611 | * must be shown RAID |
3612 | */ |
3613 | adapter->mega_ch_class = 0xFF; |
3614 | |
3615 | if(!issue_scb_block(adapter, raw_mbox)) { |
3616 | adapter->mega_ch_class = *((char *)adapter->mega_buffer); |
3617 | |
3618 | } |
3619 | |
3620 | for( i = 0; i < adapter->product_info.nchannels; i++ ) { |
3621 | if( (adapter->mega_ch_class >> i) & 0x01 ) { |
3622 | dev_info(&adapter->dev->dev, "channel[%d] is raid\n" , |
3623 | i); |
3624 | } |
3625 | else { |
3626 | dev_info(&adapter->dev->dev, "channel[%d] is scsi\n" , |
3627 | i); |
3628 | } |
3629 | } |
3630 | |
3631 | return; |
3632 | } |
3633 | |
3634 | |
3635 | /** |
3636 | * mega_get_boot_drv() |
3637 | * @adapter: pointer to our soft state |
3638 | * |
3639 | * Find out which device is the boot device. Note, any logical drive or any |
3640 | * phyical device (e.g., a CDROM) can be designated as a boot device. |
3641 | */ |
3642 | static void |
3643 | mega_get_boot_drv(adapter_t *adapter) |
3644 | { |
3645 | struct private_bios_data *prv_bios_data; |
3646 | struct mbox_out mbox; |
3647 | unsigned char *raw_mbox = (u8 *)&mbox; |
3648 | u16 cksum = 0; |
3649 | u8 *cksum_p; |
3650 | u8 boot_pdrv; |
3651 | int i; |
3652 | |
3653 | memset(&mbox, 0, sizeof(mbox)); |
3654 | |
3655 | raw_mbox[0] = BIOS_PVT_DATA; |
3656 | raw_mbox[2] = GET_BIOS_PVT_DATA; |
3657 | |
3658 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
3659 | |
3660 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
3661 | |
3662 | adapter->boot_ldrv_enabled = 0; |
3663 | adapter->boot_ldrv = 0; |
3664 | |
3665 | adapter->boot_pdrv_enabled = 0; |
3666 | adapter->boot_pdrv_ch = 0; |
3667 | adapter->boot_pdrv_tgt = 0; |
3668 | |
3669 | if(issue_scb_block(adapter, raw_mbox) == 0) { |
3670 | prv_bios_data = |
3671 | (struct private_bios_data *)adapter->mega_buffer; |
3672 | |
3673 | cksum = 0; |
3674 | cksum_p = (char *)prv_bios_data; |
3675 | for (i = 0; i < 14; i++ ) { |
3676 | cksum += (u16)(*cksum_p++); |
3677 | } |
3678 | |
3679 | if (prv_bios_data->cksum == (u16)(0-cksum) ) { |
3680 | |
3681 | /* |
3682 | * If MSB is set, a physical drive is set as boot |
3683 | * device |
3684 | */ |
3685 | if( prv_bios_data->boot_drv & 0x80 ) { |
3686 | adapter->boot_pdrv_enabled = 1; |
3687 | boot_pdrv = prv_bios_data->boot_drv & 0x7F; |
3688 | adapter->boot_pdrv_ch = boot_pdrv / 16; |
3689 | adapter->boot_pdrv_tgt = boot_pdrv % 16; |
3690 | } |
3691 | else { |
3692 | adapter->boot_ldrv_enabled = 1; |
3693 | adapter->boot_ldrv = prv_bios_data->boot_drv; |
3694 | } |
3695 | } |
3696 | } |
3697 | |
3698 | } |
3699 | |
3700 | /** |
3701 | * mega_support_random_del() |
3702 | * @adapter: pointer to our soft state |
3703 | * |
3704 | * Find out if this controller supports random deletion and addition of |
3705 | * logical drives |
3706 | */ |
3707 | static int |
3708 | mega_support_random_del(adapter_t *adapter) |
3709 | { |
3710 | struct mbox_out mbox; |
3711 | unsigned char *raw_mbox = (u8 *)&mbox; |
3712 | int rval; |
3713 | |
3714 | memset(&mbox, 0, sizeof(mbox)); |
3715 | |
3716 | /* |
3717 | * issue command |
3718 | */ |
3719 | raw_mbox[0] = FC_DEL_LOGDRV; |
3720 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; |
3721 | |
3722 | rval = issue_scb_block(adapter, raw_mbox); |
3723 | |
3724 | return !rval; |
3725 | } |
3726 | |
3727 | |
3728 | /** |
3729 | * mega_support_ext_cdb() |
3730 | * @adapter: pointer to our soft state |
3731 | * |
3732 | * Find out if this firmware support cdblen > 10 |
3733 | */ |
3734 | static int |
3735 | mega_support_ext_cdb(adapter_t *adapter) |
3736 | { |
3737 | struct mbox_out mbox; |
3738 | unsigned char *raw_mbox = (u8 *)&mbox; |
3739 | int rval; |
3740 | |
3741 | memset(&mbox, 0, sizeof(mbox)); |
3742 | /* |
3743 | * issue command to find out if controller supports extended CDBs. |
3744 | */ |
3745 | raw_mbox[0] = 0xA4; |
3746 | raw_mbox[2] = 0x16; |
3747 | |
3748 | rval = issue_scb_block(adapter, raw_mbox); |
3749 | |
3750 | return !rval; |
3751 | } |
3752 | |
3753 | |
3754 | /** |
3755 | * mega_del_logdrv() |
3756 | * @adapter: pointer to our soft state |
3757 | * @logdrv: logical drive to be deleted |
3758 | * |
3759 | * Delete the specified logical drive. It is the responsibility of the user |
3760 | * app to let the OS know about this operation. |
3761 | */ |
3762 | static int |
3763 | mega_del_logdrv(adapter_t *adapter, int logdrv) |
3764 | { |
3765 | unsigned long flags; |
3766 | scb_t *scb; |
3767 | int rval; |
3768 | |
3769 | /* |
3770 | * Stop sending commands to the controller, queue them internally. |
3771 | * When deletion is complete, ISR will flush the queue. |
3772 | */ |
3773 | atomic_set(v: &adapter->quiescent, i: 1); |
3774 | |
3775 | /* |
3776 | * Wait till all the issued commands are complete and there are no |
3777 | * commands in the pending queue |
3778 | */ |
3779 | while (atomic_read(v: &adapter->pend_cmds) > 0 || |
3780 | !list_empty(head: &adapter->pending_list)) |
3781 | msleep(msecs: 1000); /* sleep for 1s */ |
3782 | |
3783 | rval = mega_do_del_logdrv(adapter, logdrv); |
3784 | |
3785 | spin_lock_irqsave(&adapter->lock, flags); |
3786 | |
3787 | /* |
3788 | * If delete operation was successful, add 0x80 to the logical drive |
3789 | * ids for commands in the pending queue. |
3790 | */ |
3791 | if (adapter->read_ldidmap) { |
3792 | struct list_head *pos; |
3793 | list_for_each(pos, &adapter->pending_list) { |
3794 | scb = list_entry(pos, scb_t, list); |
3795 | if (scb->pthru->logdrv < 0x80 ) |
3796 | scb->pthru->logdrv += 0x80; |
3797 | } |
3798 | } |
3799 | |
3800 | atomic_set(v: &adapter->quiescent, i: 0); |
3801 | |
3802 | mega_runpendq(adapter); |
3803 | |
3804 | spin_unlock_irqrestore(lock: &adapter->lock, flags); |
3805 | |
3806 | return rval; |
3807 | } |
3808 | |
3809 | |
3810 | static int |
3811 | mega_do_del_logdrv(adapter_t *adapter, int logdrv) |
3812 | { |
3813 | megacmd_t mc; |
3814 | int rval; |
3815 | |
3816 | memset( &mc, 0, sizeof(megacmd_t)); |
3817 | |
3818 | mc.cmd = FC_DEL_LOGDRV; |
3819 | mc.opcode = OP_DEL_LOGDRV; |
3820 | mc.subopcode = logdrv; |
3821 | |
3822 | rval = mega_internal_command(adapter, &mc, NULL); |
3823 | |
3824 | /* log this event */ |
3825 | if(rval) { |
3826 | dev_warn(&adapter->dev->dev, "Delete LD-%d failed" , logdrv); |
3827 | return rval; |
3828 | } |
3829 | |
3830 | /* |
3831 | * After deleting first logical drive, the logical drives must be |
3832 | * addressed by adding 0x80 to the logical drive id. |
3833 | */ |
3834 | adapter->read_ldidmap = 1; |
3835 | |
3836 | return rval; |
3837 | } |
3838 | |
3839 | |
3840 | /** |
3841 | * mega_get_max_sgl() |
3842 | * @adapter: pointer to our soft state |
3843 | * |
3844 | * Find out the maximum number of scatter-gather elements supported by this |
3845 | * version of the firmware |
3846 | */ |
3847 | static void |
3848 | mega_get_max_sgl(adapter_t *adapter) |
3849 | { |
3850 | struct mbox_out mbox; |
3851 | unsigned char *raw_mbox = (u8 *)&mbox; |
3852 | |
3853 | memset(&mbox, 0, sizeof(mbox)); |
3854 | |
3855 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
3856 | |
3857 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
3858 | |
3859 | raw_mbox[0] = MAIN_MISC_OPCODE; |
3860 | raw_mbox[2] = GET_MAX_SG_SUPPORT; |
3861 | |
3862 | |
3863 | if( issue_scb_block(adapter, raw_mbox) ) { |
3864 | /* |
3865 | * f/w does not support this command. Choose the default value |
3866 | */ |
3867 | adapter->sglen = MIN_SGLIST; |
3868 | } |
3869 | else { |
3870 | adapter->sglen = *((char *)adapter->mega_buffer); |
3871 | |
3872 | /* |
3873 | * Make sure this is not more than the resources we are |
3874 | * planning to allocate |
3875 | */ |
3876 | if ( adapter->sglen > MAX_SGLIST ) |
3877 | adapter->sglen = MAX_SGLIST; |
3878 | } |
3879 | |
3880 | return; |
3881 | } |
3882 | |
3883 | |
3884 | /** |
3885 | * mega_support_cluster() |
3886 | * @adapter: pointer to our soft state |
3887 | * |
3888 | * Find out if this firmware support cluster calls. |
3889 | */ |
3890 | static int |
3891 | mega_support_cluster(adapter_t *adapter) |
3892 | { |
3893 | struct mbox_out mbox; |
3894 | unsigned char *raw_mbox = (u8 *)&mbox; |
3895 | |
3896 | memset(&mbox, 0, sizeof(mbox)); |
3897 | |
3898 | memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
3899 | |
3900 | mbox.xferaddr = (u32)adapter->buf_dma_handle; |
3901 | |
3902 | /* |
3903 | * Try to get the initiator id. This command will succeed iff the |
3904 | * clustering is available on this HBA. |
3905 | */ |
3906 | raw_mbox[0] = MEGA_GET_TARGET_ID; |
3907 | |
3908 | if( issue_scb_block(adapter, raw_mbox) == 0 ) { |
3909 | |
3910 | /* |
3911 | * Cluster support available. Get the initiator target id. |
3912 | * Tell our id to mid-layer too. |
3913 | */ |
3914 | adapter->this_id = *(u32 *)adapter->mega_buffer; |
3915 | adapter->host->this_id = adapter->this_id; |
3916 | |
3917 | return 1; |
3918 | } |
3919 | |
3920 | return 0; |
3921 | } |
3922 | |
3923 | #ifdef CONFIG_PROC_FS |
3924 | /** |
3925 | * mega_adapinq() |
3926 | * @adapter: pointer to our soft state |
3927 | * @dma_handle: DMA address of the buffer |
3928 | * |
3929 | * Issue internal commands while interrupts are available. |
3930 | * We only issue direct mailbox commands from within the driver. ioctl() |
3931 | * interface using these routines can issue passthru commands. |
3932 | */ |
3933 | static int |
3934 | mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) |
3935 | { |
3936 | megacmd_t mc; |
3937 | |
3938 | memset(&mc, 0, sizeof(megacmd_t)); |
3939 | |
3940 | if( adapter->flag & BOARD_40LD ) { |
3941 | mc.cmd = FC_NEW_CONFIG; |
3942 | mc.opcode = NC_SUBOP_ENQUIRY3; |
3943 | mc.subopcode = ENQ3_GET_SOLICITED_FULL; |
3944 | } |
3945 | else { |
3946 | mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; |
3947 | } |
3948 | |
3949 | mc.xferaddr = (u32)dma_handle; |
3950 | |
3951 | if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { |
3952 | return -1; |
3953 | } |
3954 | |
3955 | return 0; |
3956 | } |
3957 | |
3958 | |
3959 | /** |
3960 | * mega_internal_dev_inquiry() |
3961 | * @adapter: pointer to our soft state |
3962 | * @ch: channel for this device |
3963 | * @tgt: ID of this device |
3964 | * @buf_dma_handle: DMA address of the buffer |
3965 | * |
3966 | * Issue the scsi inquiry for the specified device. |
3967 | */ |
3968 | static int |
3969 | mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, |
3970 | dma_addr_t buf_dma_handle) |
3971 | { |
3972 | mega_passthru *pthru; |
3973 | dma_addr_t pthru_dma_handle; |
3974 | megacmd_t mc; |
3975 | int rval; |
3976 | struct pci_dev *pdev; |
3977 | |
3978 | |
3979 | /* |
3980 | * For all internal commands, the buffer must be allocated in <4GB |
3981 | * address range |
3982 | */ |
3983 | if( make_local_pdev(adapter, pdev: &pdev) != 0 ) return -1; |
3984 | |
3985 | pthru = dma_alloc_coherent(dev: &pdev->dev, size: sizeof(mega_passthru), |
3986 | dma_handle: &pthru_dma_handle, GFP_KERNEL); |
3987 | |
3988 | if( pthru == NULL ) { |
3989 | free_local_pdev(pdev); |
3990 | return -1; |
3991 | } |
3992 | |
3993 | pthru->timeout = 2; |
3994 | pthru->ars = 1; |
3995 | pthru->reqsenselen = 14; |
3996 | pthru->islogical = 0; |
3997 | |
3998 | pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; |
3999 | |
4000 | pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; |
4001 | |
4002 | pthru->cdblen = 6; |
4003 | |
4004 | pthru->cdb[0] = INQUIRY; |
4005 | pthru->cdb[1] = 0; |
4006 | pthru->cdb[2] = 0; |
4007 | pthru->cdb[3] = 0; |
4008 | pthru->cdb[4] = 255; |
4009 | pthru->cdb[5] = 0; |
4010 | |
4011 | |
4012 | pthru->dataxferaddr = (u32)buf_dma_handle; |
4013 | pthru->dataxferlen = 256; |
4014 | |
4015 | memset(&mc, 0, sizeof(megacmd_t)); |
4016 | |
4017 | mc.cmd = MEGA_MBOXCMD_PASSTHRU; |
4018 | mc.xferaddr = (u32)pthru_dma_handle; |
4019 | |
4020 | rval = mega_internal_command(adapter, &mc, pthru); |
4021 | |
4022 | dma_free_coherent(dev: &pdev->dev, size: sizeof(mega_passthru), cpu_addr: pthru, |
4023 | dma_handle: pthru_dma_handle); |
4024 | |
4025 | free_local_pdev(pdev); |
4026 | |
4027 | return rval; |
4028 | } |
4029 | #endif |
4030 | |
4031 | /** |
4032 | * mega_internal_command() |
4033 | * @adapter: pointer to our soft state |
4034 | * @mc: the mailbox command |
4035 | * @pthru: Passthru structure for DCDB commands |
4036 | * |
4037 | * Issue the internal commands in interrupt mode. |
4038 | * The last argument is the address of the passthru structure if the command |
4039 | * to be fired is a passthru command |
4040 | * |
4041 | * Note: parameter 'pthru' is null for non-passthru commands. |
4042 | */ |
4043 | static int |
4044 | mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) |
4045 | { |
4046 | unsigned long flags; |
4047 | scb_t *scb; |
4048 | int rval; |
4049 | |
4050 | /* |
4051 | * The internal commands share one command id and hence are |
4052 | * serialized. This is so because we want to reserve maximum number of |
4053 | * available command ids for the I/O commands. |
4054 | */ |
4055 | mutex_lock(&adapter->int_mtx); |
4056 | |
4057 | scb = &adapter->int_scb; |
4058 | memset(scb, 0, sizeof(scb_t)); |
4059 | |
4060 | scb->idx = CMDID_INT_CMDS; |
4061 | scb->state |= SCB_ACTIVE | SCB_PENDQ; |
4062 | |
4063 | memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); |
4064 | |
4065 | /* |
4066 | * Is it a passthru command |
4067 | */ |
4068 | if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) |
4069 | scb->pthru = pthru; |
4070 | |
4071 | spin_lock_irqsave(&adapter->lock, flags); |
4072 | list_add_tail(new: &scb->list, head: &adapter->pending_list); |
4073 | /* |
4074 | * Check if the HBA is in quiescent state, e.g., during a |
4075 | * delete logical drive opertion. If it is, don't run |
4076 | * the pending_list. |
4077 | */ |
4078 | if (atomic_read(v: &adapter->quiescent) == 0) |
4079 | mega_runpendq(adapter); |
4080 | spin_unlock_irqrestore(lock: &adapter->lock, flags); |
4081 | |
4082 | wait_for_completion(&adapter->int_waitq); |
4083 | |
4084 | mc->status = rval = adapter->int_status; |
4085 | |
4086 | /* |
4087 | * Print a debug message for all failed commands. Applications can use |
4088 | * this information. |
4089 | */ |
4090 | if (rval && trace_level) { |
4091 | dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n" , |
4092 | mc->cmd, mc->opcode, mc->subopcode, rval); |
4093 | } |
4094 | |
4095 | mutex_unlock(lock: &adapter->int_mtx); |
4096 | return rval; |
4097 | } |
4098 | |
4099 | static const struct scsi_host_template megaraid_template = { |
4100 | .module = THIS_MODULE, |
4101 | .name = "MegaRAID" , |
4102 | .proc_name = "megaraid_legacy" , |
4103 | .info = megaraid_info, |
4104 | .queuecommand = megaraid_queue, |
4105 | .bios_param = megaraid_biosparam, |
4106 | .max_sectors = MAX_SECTORS_PER_IO, |
4107 | .can_queue = MAX_COMMANDS, |
4108 | .this_id = DEFAULT_INITIATOR_ID, |
4109 | .sg_tablesize = MAX_SGLIST, |
4110 | .cmd_per_lun = DEF_CMD_PER_LUN, |
4111 | .eh_abort_handler = megaraid_abort, |
4112 | .eh_host_reset_handler = megaraid_reset, |
4113 | .no_write_same = 1, |
4114 | .cmd_size = sizeof(struct megaraid_cmd_priv), |
4115 | }; |
4116 | |
4117 | static int |
4118 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
4119 | { |
4120 | struct Scsi_Host *host; |
4121 | adapter_t *adapter; |
4122 | unsigned long mega_baseport, tbase, flag = 0; |
4123 | u16 subsysid, subsysvid; |
4124 | u8 pci_bus, pci_dev_func; |
4125 | int irq, i, j; |
4126 | int error = -ENODEV; |
4127 | |
4128 | if (hba_count >= MAX_CONTROLLERS) |
4129 | goto out; |
4130 | |
4131 | if (pci_enable_device(dev: pdev)) |
4132 | goto out; |
4133 | pci_set_master(dev: pdev); |
4134 | |
4135 | pci_bus = pdev->bus->number; |
4136 | pci_dev_func = pdev->devfn; |
4137 | |
4138 | /* |
4139 | * The megaraid3 stuff reports the ID of the Intel part which is not |
4140 | * remotely specific to the megaraid |
4141 | */ |
4142 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
4143 | u16 magic; |
4144 | /* |
4145 | * Don't fall over the Compaq management cards using the same |
4146 | * PCI identifier |
4147 | */ |
4148 | if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && |
4149 | pdev->subsystem_device == 0xC000) |
4150 | goto out_disable_device; |
4151 | /* Now check the magic signature byte */ |
4152 | pci_read_config_word(dev: pdev, PCI_CONF_AMISIG, val: &magic); |
4153 | if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) |
4154 | goto out_disable_device; |
4155 | /* Ok it is probably a megaraid */ |
4156 | } |
4157 | |
4158 | /* |
4159 | * For these vendor and device ids, signature offsets are not |
4160 | * valid and 64 bit is implicit |
4161 | */ |
4162 | if (id->driver_data & BOARD_64BIT) |
4163 | flag |= BOARD_64BIT; |
4164 | else { |
4165 | u32 magic64; |
4166 | |
4167 | pci_read_config_dword(dev: pdev, PCI_CONF_AMISIG64, val: &magic64); |
4168 | if (magic64 == HBA_SIGNATURE_64BIT) |
4169 | flag |= BOARD_64BIT; |
4170 | } |
4171 | |
4172 | subsysvid = pdev->subsystem_vendor; |
4173 | subsysid = pdev->subsystem_device; |
4174 | |
4175 | dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n" , |
4176 | id->vendor, id->device); |
4177 | |
4178 | /* Read the base port and IRQ from PCI */ |
4179 | mega_baseport = pci_resource_start(pdev, 0); |
4180 | irq = pdev->irq; |
4181 | |
4182 | tbase = mega_baseport; |
4183 | if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { |
4184 | flag |= BOARD_MEMMAP; |
4185 | |
4186 | if (!request_mem_region(mega_baseport, 128, "megaraid" )) { |
4187 | dev_warn(&pdev->dev, "mem region busy!\n" ); |
4188 | goto out_disable_device; |
4189 | } |
4190 | |
4191 | mega_baseport = (unsigned long)ioremap(offset: mega_baseport, size: 128); |
4192 | if (!mega_baseport) { |
4193 | dev_warn(&pdev->dev, "could not map hba memory\n" ); |
4194 | goto out_release_region; |
4195 | } |
4196 | } else { |
4197 | flag |= BOARD_IOMAP; |
4198 | mega_baseport += 0x10; |
4199 | |
4200 | if (!request_region(mega_baseport, 16, "megaraid" )) |
4201 | goto out_disable_device; |
4202 | } |
4203 | |
4204 | /* Initialize SCSI Host structure */ |
4205 | host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); |
4206 | if (!host) |
4207 | goto out_iounmap; |
4208 | |
4209 | adapter = (adapter_t *)host->hostdata; |
4210 | memset(adapter, 0, sizeof(adapter_t)); |
4211 | |
4212 | dev_notice(&pdev->dev, |
4213 | "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n" , |
4214 | host->host_no, mega_baseport, irq); |
4215 | |
4216 | adapter->base = mega_baseport; |
4217 | if (flag & BOARD_MEMMAP) |
4218 | adapter->mmio_base = (void __iomem *) mega_baseport; |
4219 | |
4220 | INIT_LIST_HEAD(list: &adapter->free_list); |
4221 | INIT_LIST_HEAD(list: &adapter->pending_list); |
4222 | INIT_LIST_HEAD(list: &adapter->completed_list); |
4223 | |
4224 | adapter->flag = flag; |
4225 | spin_lock_init(&adapter->lock); |
4226 | |
4227 | host->cmd_per_lun = max_cmd_per_lun; |
4228 | host->max_sectors = max_sectors_per_io; |
4229 | |
4230 | adapter->dev = pdev; |
4231 | adapter->host = host; |
4232 | |
4233 | adapter->host->irq = irq; |
4234 | |
4235 | if (flag & BOARD_MEMMAP) |
4236 | adapter->host->base = tbase; |
4237 | else { |
4238 | adapter->host->io_port = tbase; |
4239 | adapter->host->n_io_port = 16; |
4240 | } |
4241 | |
4242 | adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; |
4243 | |
4244 | /* |
4245 | * Allocate buffer to issue internal commands. |
4246 | */ |
4247 | adapter->mega_buffer = dma_alloc_coherent(dev: &adapter->dev->dev, |
4248 | MEGA_BUFFER_SIZE, |
4249 | dma_handle: &adapter->buf_dma_handle, |
4250 | GFP_KERNEL); |
4251 | if (!adapter->mega_buffer) { |
4252 | dev_warn(&pdev->dev, "out of RAM\n" ); |
4253 | goto out_host_put; |
4254 | } |
4255 | |
4256 | adapter->scb_list = kmalloc_array(MAX_COMMANDS, size: sizeof(scb_t), |
4257 | GFP_KERNEL); |
4258 | if (!adapter->scb_list) { |
4259 | dev_warn(&pdev->dev, "out of RAM\n" ); |
4260 | goto out_free_cmd_buffer; |
4261 | } |
4262 | |
4263 | if (request_irq(irq, handler: (adapter->flag & BOARD_MEMMAP) ? |
4264 | megaraid_isr_memmapped : megaraid_isr_iomapped, |
4265 | IRQF_SHARED, name: "megaraid" , dev: adapter)) { |
4266 | dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n" , irq); |
4267 | goto out_free_scb_list; |
4268 | } |
4269 | |
4270 | if (mega_setup_mailbox(adapter)) |
4271 | goto out_free_irq; |
4272 | |
4273 | if (mega_query_adapter(adapter)) |
4274 | goto out_free_mbox; |
4275 | |
4276 | /* |
4277 | * Have checks for some buggy f/w |
4278 | */ |
4279 | if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { |
4280 | /* |
4281 | * Which firmware |
4282 | */ |
4283 | if (!strcmp(adapter->fw_version, "3.00" ) || |
4284 | !strcmp(adapter->fw_version, "3.01" )) { |
4285 | |
4286 | dev_warn(&pdev->dev, |
4287 | "Your card is a Dell PERC " |
4288 | "2/SC RAID controller with " |
4289 | "firmware\nmegaraid: 3.00 or 3.01. " |
4290 | "This driver is known to have " |
4291 | "corruption issues\nmegaraid: with " |
4292 | "those firmware versions on this " |
4293 | "specific card. In order\nmegaraid: " |
4294 | "to protect your data, please upgrade " |
4295 | "your firmware to version\nmegaraid: " |
4296 | "3.10 or later, available from the " |
4297 | "Dell Technical Support web\n" |
4298 | "megaraid: site at\nhttp://support." |
4299 | "dell.com/us/en/filelib/download/" |
4300 | "index.asp?fileid=2940\n" |
4301 | ); |
4302 | } |
4303 | } |
4304 | |
4305 | /* |
4306 | * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with |
4307 | * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit |
4308 | * support, since this firmware cannot handle 64 bit |
4309 | * addressing |
4310 | */ |
4311 | if ((subsysvid == PCI_VENDOR_ID_HP) && |
4312 | ((subsysid == 0x60E7) || (subsysid == 0x60E8))) { |
4313 | /* |
4314 | * which firmware |
4315 | */ |
4316 | if (!strcmp(adapter->fw_version, "H01.07" ) || |
4317 | !strcmp(adapter->fw_version, "H01.08" ) || |
4318 | !strcmp(adapter->fw_version, "H01.09" ) ) { |
4319 | dev_warn(&pdev->dev, |
4320 | "Firmware H.01.07, " |
4321 | "H.01.08, and H.01.09 on 1M/2M " |
4322 | "controllers\n" |
4323 | "do not support 64 bit " |
4324 | "addressing.\nDISABLING " |
4325 | "64 bit support.\n" ); |
4326 | adapter->flag &= ~BOARD_64BIT; |
4327 | } |
4328 | } |
4329 | |
4330 | if (mega_is_bios_enabled(adapter)) |
4331 | mega_hbas[hba_count].is_bios_enabled = 1; |
4332 | mega_hbas[hba_count].hostdata_addr = adapter; |
4333 | |
4334 | /* |
4335 | * Find out which channel is raid and which is scsi. This is |
4336 | * for ROMB support. |
4337 | */ |
4338 | mega_enum_raid_scsi(adapter); |
4339 | |
4340 | /* |
4341 | * Find out if a logical drive is set as the boot drive. If |
4342 | * there is one, will make that as the first logical drive. |
4343 | * ROMB: Do we have to boot from a physical drive. Then all |
4344 | * the physical drives would appear before the logical disks. |
4345 | * Else, all the physical drives would be exported to the mid |
4346 | * layer after logical drives. |
4347 | */ |
4348 | mega_get_boot_drv(adapter); |
4349 | |
4350 | if (adapter->boot_pdrv_enabled) { |
4351 | j = adapter->product_info.nchannels; |
4352 | for( i = 0; i < j; i++ ) |
4353 | adapter->logdrv_chan[i] = 0; |
4354 | for( i = j; i < NVIRT_CHAN + j; i++ ) |
4355 | adapter->logdrv_chan[i] = 1; |
4356 | } else { |
4357 | for (i = 0; i < NVIRT_CHAN; i++) |
4358 | adapter->logdrv_chan[i] = 1; |
4359 | for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) |
4360 | adapter->logdrv_chan[i] = 0; |
4361 | adapter->mega_ch_class <<= NVIRT_CHAN; |
4362 | } |
4363 | |
4364 | /* |
4365 | * Do we support random deletion and addition of logical |
4366 | * drives |
4367 | */ |
4368 | adapter->read_ldidmap = 0; /* set it after first logdrv |
4369 | delete cmd */ |
4370 | adapter->support_random_del = mega_support_random_del(adapter); |
4371 | |
4372 | /* Initialize SCBs */ |
4373 | if (mega_init_scb(adapter)) |
4374 | goto out_free_mbox; |
4375 | |
4376 | /* |
4377 | * Reset the pending commands counter |
4378 | */ |
4379 | atomic_set(v: &adapter->pend_cmds, i: 0); |
4380 | |
4381 | /* |
4382 | * Reset the adapter quiescent flag |
4383 | */ |
4384 | atomic_set(v: &adapter->quiescent, i: 0); |
4385 | |
4386 | hba_soft_state[hba_count] = adapter; |
4387 | |
4388 | /* |
4389 | * Fill in the structure which needs to be passed back to the |
4390 | * application when it does an ioctl() for controller related |
4391 | * information. |
4392 | */ |
4393 | i = hba_count; |
4394 | |
4395 | mcontroller[i].base = mega_baseport; |
4396 | mcontroller[i].irq = irq; |
4397 | mcontroller[i].numldrv = adapter->numldrv; |
4398 | mcontroller[i].pcibus = pci_bus; |
4399 | mcontroller[i].pcidev = id->device; |
4400 | mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); |
4401 | mcontroller[i].pciid = -1; |
4402 | mcontroller[i].pcivendor = id->vendor; |
4403 | mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); |
4404 | mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; |
4405 | |
4406 | |
4407 | /* Set the Mode of addressing to 64 bit if we can */ |
4408 | if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { |
4409 | dma_set_mask(dev: &pdev->dev, DMA_BIT_MASK(64)); |
4410 | adapter->has_64bit_addr = 1; |
4411 | } else { |
4412 | dma_set_mask(dev: &pdev->dev, DMA_BIT_MASK(32)); |
4413 | adapter->has_64bit_addr = 0; |
4414 | } |
4415 | |
4416 | mutex_init(&adapter->int_mtx); |
4417 | init_completion(x: &adapter->int_waitq); |
4418 | |
4419 | adapter->this_id = DEFAULT_INITIATOR_ID; |
4420 | adapter->host->this_id = DEFAULT_INITIATOR_ID; |
4421 | |
4422 | #if MEGA_HAVE_CLUSTERING |
4423 | /* |
4424 | * Is cluster support enabled on this controller |
4425 | * Note: In a cluster the HBAs ( the initiators ) will have |
4426 | * different target IDs and we cannot assume it to be 7. Call |
4427 | * to mega_support_cluster() will get the target ids also if |
4428 | * the cluster support is available |
4429 | */ |
4430 | adapter->has_cluster = mega_support_cluster(adapter); |
4431 | if (adapter->has_cluster) { |
4432 | dev_notice(&pdev->dev, |
4433 | "Cluster driver, initiator id:%d\n" , |
4434 | adapter->this_id); |
4435 | } |
4436 | #endif |
4437 | |
4438 | pci_set_drvdata(pdev, data: host); |
4439 | |
4440 | mega_create_proc_entry(index: hba_count, parent: mega_proc_dir_entry); |
4441 | |
4442 | error = scsi_add_host(host, dev: &pdev->dev); |
4443 | if (error) |
4444 | goto out_free_mbox; |
4445 | |
4446 | scsi_scan_host(host); |
4447 | hba_count++; |
4448 | return 0; |
4449 | |
4450 | out_free_mbox: |
4451 | dma_free_coherent(dev: &adapter->dev->dev, size: sizeof(mbox64_t), |
4452 | cpu_addr: adapter->una_mbox64, dma_handle: adapter->una_mbox64_dma); |
4453 | out_free_irq: |
4454 | free_irq(adapter->host->irq, adapter); |
4455 | out_free_scb_list: |
4456 | kfree(objp: adapter->scb_list); |
4457 | out_free_cmd_buffer: |
4458 | dma_free_coherent(dev: &adapter->dev->dev, MEGA_BUFFER_SIZE, |
4459 | cpu_addr: adapter->mega_buffer, dma_handle: adapter->buf_dma_handle); |
4460 | out_host_put: |
4461 | scsi_host_put(t: host); |
4462 | out_iounmap: |
4463 | if (flag & BOARD_MEMMAP) |
4464 | iounmap(addr: (void *)mega_baseport); |
4465 | out_release_region: |
4466 | if (flag & BOARD_MEMMAP) |
4467 | release_mem_region(tbase, 128); |
4468 | else |
4469 | release_region(mega_baseport, 16); |
4470 | out_disable_device: |
4471 | pci_disable_device(dev: pdev); |
4472 | out: |
4473 | return error; |
4474 | } |
4475 | |
4476 | static void |
4477 | __megaraid_shutdown(adapter_t *adapter) |
4478 | { |
4479 | u_char raw_mbox[sizeof(struct mbox_out)]; |
4480 | mbox_t *mbox = (mbox_t *)raw_mbox; |
4481 | int i; |
4482 | |
4483 | /* Flush adapter cache */ |
4484 | memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
4485 | raw_mbox[0] = FLUSH_ADAPTER; |
4486 | |
4487 | free_irq(adapter->host->irq, adapter); |
4488 | |
4489 | /* Issue a blocking (interrupts disabled) command to the card */ |
4490 | issue_scb_block(adapter, raw_mbox); |
4491 | |
4492 | /* Flush disks cache */ |
4493 | memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
4494 | raw_mbox[0] = FLUSH_SYSTEM; |
4495 | |
4496 | /* Issue a blocking (interrupts disabled) command to the card */ |
4497 | issue_scb_block(adapter, raw_mbox); |
4498 | |
4499 | if (atomic_read(v: &adapter->pend_cmds) > 0) |
4500 | dev_warn(&adapter->dev->dev, "pending commands!!\n" ); |
4501 | |
4502 | /* |
4503 | * Have a delibrate delay to make sure all the caches are |
4504 | * actually flushed. |
4505 | */ |
4506 | for (i = 0; i <= 10; i++) |
4507 | mdelay(1000); |
4508 | } |
4509 | |
4510 | static void |
4511 | megaraid_remove_one(struct pci_dev *pdev) |
4512 | { |
4513 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
4514 | adapter_t *adapter = (adapter_t *)host->hostdata; |
4515 | char buf[12] = { 0 }; |
4516 | |
4517 | scsi_remove_host(host); |
4518 | |
4519 | __megaraid_shutdown(adapter); |
4520 | |
4521 | /* Free our resources */ |
4522 | if (adapter->flag & BOARD_MEMMAP) { |
4523 | iounmap(addr: (void *)adapter->base); |
4524 | release_mem_region(adapter->host->base, 128); |
4525 | } else |
4526 | release_region(adapter->base, 16); |
4527 | |
4528 | mega_free_sgl(adapter); |
4529 | |
4530 | sprintf(buf, fmt: "hba%d" , adapter->host->host_no); |
4531 | remove_proc_subtree(buf, mega_proc_dir_entry); |
4532 | |
4533 | dma_free_coherent(dev: &adapter->dev->dev, MEGA_BUFFER_SIZE, |
4534 | cpu_addr: adapter->mega_buffer, dma_handle: adapter->buf_dma_handle); |
4535 | kfree(objp: adapter->scb_list); |
4536 | dma_free_coherent(dev: &adapter->dev->dev, size: sizeof(mbox64_t), |
4537 | cpu_addr: adapter->una_mbox64, dma_handle: adapter->una_mbox64_dma); |
4538 | |
4539 | scsi_host_put(t: host); |
4540 | pci_disable_device(dev: pdev); |
4541 | |
4542 | hba_count--; |
4543 | } |
4544 | |
4545 | static void |
4546 | megaraid_shutdown(struct pci_dev *pdev) |
4547 | { |
4548 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
4549 | adapter_t *adapter = (adapter_t *)host->hostdata; |
4550 | |
4551 | __megaraid_shutdown(adapter); |
4552 | } |
4553 | |
4554 | static struct pci_device_id megaraid_pci_tbl[] = { |
4555 | {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, |
4556 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
4557 | {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, |
4558 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
4559 | {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, |
4560 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
4561 | {0,} |
4562 | }; |
4563 | MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); |
4564 | |
4565 | static struct pci_driver megaraid_pci_driver = { |
4566 | .name = "megaraid_legacy" , |
4567 | .id_table = megaraid_pci_tbl, |
4568 | .probe = megaraid_probe_one, |
4569 | .remove = megaraid_remove_one, |
4570 | .shutdown = megaraid_shutdown, |
4571 | }; |
4572 | |
4573 | static int __init megaraid_init(void) |
4574 | { |
4575 | int error; |
4576 | |
4577 | if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) |
4578 | max_cmd_per_lun = MAX_CMD_PER_LUN; |
4579 | if (max_mbox_busy_wait > MBOX_BUSY_WAIT) |
4580 | max_mbox_busy_wait = MBOX_BUSY_WAIT; |
4581 | |
4582 | #ifdef CONFIG_PROC_FS |
4583 | mega_proc_dir_entry = proc_mkdir("megaraid" , NULL); |
4584 | if (!mega_proc_dir_entry) { |
4585 | printk(KERN_WARNING |
4586 | "megaraid: failed to create megaraid root\n" ); |
4587 | } |
4588 | #endif |
4589 | error = pci_register_driver(&megaraid_pci_driver); |
4590 | if (error) { |
4591 | #ifdef CONFIG_PROC_FS |
4592 | remove_proc_entry("megaraid" , NULL); |
4593 | #endif |
4594 | return error; |
4595 | } |
4596 | |
4597 | /* |
4598 | * Register the driver as a character device, for applications |
4599 | * to access it for ioctls. |
4600 | * First argument (major) to register_chrdev implies a dynamic |
4601 | * major number allocation. |
4602 | */ |
4603 | major = register_chrdev(major: 0, name: "megadev_legacy" , fops: &megadev_fops); |
4604 | if (major < 0) { |
4605 | printk(KERN_WARNING |
4606 | "megaraid: failed to register char device\n" ); |
4607 | } |
4608 | |
4609 | return 0; |
4610 | } |
4611 | |
4612 | static void __exit megaraid_exit(void) |
4613 | { |
4614 | /* |
4615 | * Unregister the character device interface to the driver. |
4616 | */ |
4617 | unregister_chrdev(major, name: "megadev_legacy" ); |
4618 | |
4619 | pci_unregister_driver(dev: &megaraid_pci_driver); |
4620 | |
4621 | #ifdef CONFIG_PROC_FS |
4622 | remove_proc_entry("megaraid" , NULL); |
4623 | #endif |
4624 | } |
4625 | |
4626 | module_init(megaraid_init); |
4627 | module_exit(megaraid_exit); |
4628 | |
4629 | /* vi: set ts=8 sw=8 tw=78: */ |
4630 | |