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[SCSI] allow sleeping in ->eh_device_reset_handler()
[deliverable/linux.git] / drivers / scsi / megaraid.c
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright © 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com>
21 *
22 * Description: Linux device driver for LSI Logic MegaRAID controller
23 *
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
25 * 518, 520, 531, 532
26 *
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the mailing list
29 * linux-scsi@vger.kernel.org .
30 *
31 */
32
33 #include <linux/mm.h>
34 #include <linux/fs.h>
35 #include <linux/blkdev.h>
36 #include <asm/uaccess.h>
37 #include <asm/io.h>
38 #include <linux/delay.h>
39 #include <linux/proc_fs.h>
40 #include <linux/reboot.h>
41 #include <linux/module.h>
42 #include <linux/list.h>
43 #include <linux/interrupt.h>
44 #include <linux/pci.h>
45 #include <linux/init.h>
46 #include <scsi/scsicam.h>
47
48 #include "scsi.h"
49 #include <scsi/scsi_host.h>
50
51 #include "megaraid.h"
52
53 #define MEGARAID_MODULE_VERSION "2.00.3"
54
55 MODULE_AUTHOR ("LSI Logic Corporation");
56 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
57 MODULE_LICENSE ("GPL");
58 MODULE_VERSION(MEGARAID_MODULE_VERSION);
59
60 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
61 module_param(max_cmd_per_lun, uint, 0);
62 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)");
63
64 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
65 module_param(max_sectors_per_io, ushort, 0);
66 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
67
68
69 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
70 module_param(max_mbox_busy_wait, ushort, 0);
71 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
72
73 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
74 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
75 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
76 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
77
78 /*
79 * Global variables
80 */
81
82 static int hba_count;
83 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
84 static struct proc_dir_entry *mega_proc_dir_entry;
85
86 /* For controller re-ordering */
87 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
88
89 /*
90 * The File Operations structure for the serial/ioctl interface of the driver
91 */
92 static struct file_operations megadev_fops = {
93 .owner = THIS_MODULE,
94 .ioctl = megadev_ioctl,
95 .open = megadev_open,
96 };
97
98 /*
99 * Array to structures for storing the information about the controllers. This
100 * information is sent to the user level applications, when they do an ioctl
101 * for this information.
102 */
103 static struct mcontroller mcontroller[MAX_CONTROLLERS];
104
105 /* The current driver version */
106 static u32 driver_ver = 0x02000000;
107
108 /* major number used by the device for character interface */
109 static int major;
110
111 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
112
113
114 /*
115 * Debug variable to print some diagnostic messages
116 */
117 static int trace_level;
118
119 /**
120 * mega_setup_mailbox()
121 * @adapter - pointer to our soft state
122 *
123 * Allocates a 8 byte aligned memory for the handshake mailbox.
124 */
125 static int
126 mega_setup_mailbox(adapter_t *adapter)
127 {
128 unsigned long align;
129
130 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
131 sizeof(mbox64_t), &adapter->una_mbox64_dma);
132
133 if( !adapter->una_mbox64 ) return -1;
134
135 adapter->mbox = &adapter->una_mbox64->mbox;
136
137 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
138 (~0UL ^ 0xFUL));
139
140 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
141
142 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
143
144 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
145
146 /*
147 * Register the mailbox if the controller is an io-mapped controller
148 */
149 if( adapter->flag & BOARD_IOMAP ) {
150
151 outb_p(adapter->mbox_dma & 0xFF,
152 adapter->host->io_port + MBOX_PORT0);
153
154 outb_p((adapter->mbox_dma >> 8) & 0xFF,
155 adapter->host->io_port + MBOX_PORT1);
156
157 outb_p((adapter->mbox_dma >> 16) & 0xFF,
158 adapter->host->io_port + MBOX_PORT2);
159
160 outb_p((adapter->mbox_dma >> 24) & 0xFF,
161 adapter->host->io_port + MBOX_PORT3);
162
163 outb_p(ENABLE_MBOX_BYTE,
164 adapter->host->io_port + ENABLE_MBOX_REGION);
165
166 irq_ack(adapter);
167
168 irq_enable(adapter);
169 }
170
171 return 0;
172 }
173
174
175 /*
176 * mega_query_adapter()
177 * @adapter - pointer to our soft state
178 *
179 * Issue the adapter inquiry commands to the controller and find out
180 * information and parameter about the devices attached
181 */
182 static int
183 mega_query_adapter(adapter_t *adapter)
184 {
185 dma_addr_t prod_info_dma_handle;
186 mega_inquiry3 *inquiry3;
187 u8 raw_mbox[sizeof(struct mbox_out)];
188 mbox_t *mbox;
189 int retval;
190
191 /* Initialize adapter inquiry mailbox */
192
193 mbox = (mbox_t *)raw_mbox;
194
195 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
196 memset(&mbox->m_out, 0, sizeof(raw_mbox));
197
198 /*
199 * Try to issue Inquiry3 command
200 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
201 * update enquiry3 structure
202 */
203 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
204
205 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
206
207 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
208 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
209 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
210
211 /* Issue a blocking command to the card */
212 if ((retval = issue_scb_block(adapter, raw_mbox))) {
213 /* the adapter does not support 40ld */
214
215 mraid_ext_inquiry *ext_inq;
216 mraid_inquiry *inq;
217 dma_addr_t dma_handle;
218
219 ext_inq = pci_alloc_consistent(adapter->dev,
220 sizeof(mraid_ext_inquiry), &dma_handle);
221
222 if( ext_inq == NULL ) return -1;
223
224 inq = &ext_inq->raid_inq;
225
226 mbox->m_out.xferaddr = (u32)dma_handle;
227
228 /*issue old 0x04 command to adapter */
229 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
230
231 issue_scb_block(adapter, raw_mbox);
232
233 /*
234 * update Enquiry3 and ProductInfo structures with
235 * mraid_inquiry structure
236 */
237 mega_8_to_40ld(inq, inquiry3,
238 (mega_product_info *)&adapter->product_info);
239
240 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
241 ext_inq, dma_handle);
242
243 } else { /*adapter supports 40ld */
244 adapter->flag |= BOARD_40LD;
245
246 /*
247 * get product_info, which is static information and will be
248 * unchanged
249 */
250 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
251 &adapter->product_info,
252 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
253
254 mbox->m_out.xferaddr = prod_info_dma_handle;
255
256 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
257 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
258
259 if ((retval = issue_scb_block(adapter, raw_mbox)))
260 printk(KERN_WARNING
261 "megaraid: Product_info cmd failed with error: %d\n",
262 retval);
263
264 pci_unmap_single(adapter->dev, prod_info_dma_handle,
265 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
266 }
267
268
269 /*
270 * kernel scans the channels from 0 to <= max_channel
271 */
272 adapter->host->max_channel =
273 adapter->product_info.nchannels + NVIRT_CHAN -1;
274
275 adapter->host->max_id = 16; /* max targets per channel */
276
277 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
278
279 adapter->host->cmd_per_lun = max_cmd_per_lun;
280
281 adapter->numldrv = inquiry3->num_ldrv;
282
283 adapter->max_cmds = adapter->product_info.max_commands;
284
285 if(adapter->max_cmds > MAX_COMMANDS)
286 adapter->max_cmds = MAX_COMMANDS;
287
288 adapter->host->can_queue = adapter->max_cmds - 1;
289
290 /*
291 * Get the maximum number of scatter-gather elements supported by this
292 * firmware
293 */
294 mega_get_max_sgl(adapter);
295
296 adapter->host->sg_tablesize = adapter->sglen;
297
298
299 /* use HP firmware and bios version encoding */
300 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
301 sprintf (adapter->fw_version, "%c%d%d.%d%d",
302 adapter->product_info.fw_version[2],
303 adapter->product_info.fw_version[1] >> 8,
304 adapter->product_info.fw_version[1] & 0x0f,
305 adapter->product_info.fw_version[0] >> 8,
306 adapter->product_info.fw_version[0] & 0x0f);
307 sprintf (adapter->bios_version, "%c%d%d.%d%d",
308 adapter->product_info.bios_version[2],
309 adapter->product_info.bios_version[1] >> 8,
310 adapter->product_info.bios_version[1] & 0x0f,
311 adapter->product_info.bios_version[0] >> 8,
312 adapter->product_info.bios_version[0] & 0x0f);
313 } else {
314 memcpy(adapter->fw_version,
315 (char *)adapter->product_info.fw_version, 4);
316 adapter->fw_version[4] = 0;
317
318 memcpy(adapter->bios_version,
319 (char *)adapter->product_info.bios_version, 4);
320
321 adapter->bios_version[4] = 0;
322 }
323
324 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
325 adapter->fw_version, adapter->bios_version, adapter->numldrv);
326
327 /*
328 * Do we support extended (>10 bytes) cdbs
329 */
330 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
331 if (adapter->support_ext_cdb)
332 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
333
334
335 return 0;
336 }
337
338 /**
339 * mega_runpendq()
340 * @adapter - pointer to our soft state
341 *
342 * Runs through the list of pending requests.
343 */
344 static inline void
345 mega_runpendq(adapter_t *adapter)
346 {
347 if(!list_empty(&adapter->pending_list))
348 __mega_runpendq(adapter);
349 }
350
351 /*
352 * megaraid_queue()
353 * @scmd - Issue this scsi command
354 * @done - the callback hook into the scsi mid-layer
355 *
356 * The command queuing entry point for the mid-layer.
357 */
358 static int
359 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
360 {
361 adapter_t *adapter;
362 scb_t *scb;
363 int busy=0;
364
365 adapter = (adapter_t *)scmd->device->host->hostdata;
366
367 scmd->scsi_done = done;
368
369
370 /*
371 * Allocate and build a SCB request
372 * busy flag will be set if mega_build_cmd() command could not
373 * allocate scb. We will return non-zero status in that case.
374 * NOTE: scb can be null even though certain commands completed
375 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
376 * return 0 in that case.
377 */
378
379 scb = mega_build_cmd(adapter, scmd, &busy);
380
381 if(scb) {
382 scb->state |= SCB_PENDQ;
383 list_add_tail(&scb->list, &adapter->pending_list);
384
385 /*
386 * Check if the HBA is in quiescent state, e.g., during a
387 * delete logical drive opertion. If it is, don't run
388 * the pending_list.
389 */
390 if(atomic_read(&adapter->quiescent) == 0) {
391 mega_runpendq(adapter);
392 }
393 return 0;
394 }
395
396 return busy;
397 }
398
399 /**
400 * mega_allocate_scb()
401 * @adapter - pointer to our soft state
402 * @cmd - scsi command from the mid-layer
403 *
404 * Allocate a SCB structure. This is the central structure for controller
405 * commands.
406 */
407 static inline scb_t *
408 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
409 {
410 struct list_head *head = &adapter->free_list;
411 scb_t *scb;
412
413 /* Unlink command from Free List */
414 if( !list_empty(head) ) {
415
416 scb = list_entry(head->next, scb_t, list);
417
418 list_del_init(head->next);
419
420 scb->state = SCB_ACTIVE;
421 scb->cmd = cmd;
422 scb->dma_type = MEGA_DMA_TYPE_NONE;
423
424 return scb;
425 }
426
427 return NULL;
428 }
429
430 /**
431 * mega_get_ldrv_num()
432 * @adapter - pointer to our soft state
433 * @cmd - scsi mid layer command
434 * @channel - channel on the controller
435 *
436 * Calculate the logical drive number based on the information in scsi command
437 * and the channel number.
438 */
439 static inline int
440 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
441 {
442 int tgt;
443 int ldrv_num;
444
445 tgt = cmd->device->id;
446
447 if ( tgt > adapter->this_id )
448 tgt--; /* we do not get inquires for initiator id */
449
450 ldrv_num = (channel * 15) + tgt;
451
452
453 /*
454 * If we have a logical drive with boot enabled, project it first
455 */
456 if( adapter->boot_ldrv_enabled ) {
457 if( ldrv_num == 0 ) {
458 ldrv_num = adapter->boot_ldrv;
459 }
460 else {
461 if( ldrv_num <= adapter->boot_ldrv ) {
462 ldrv_num--;
463 }
464 }
465 }
466
467 /*
468 * If "delete logical drive" feature is enabled on this controller.
469 * Do only if at least one delete logical drive operation was done.
470 *
471 * Also, after logical drive deletion, instead of logical drive number,
472 * the value returned should be 0x80+logical drive id.
473 *
474 * These is valid only for IO commands.
475 */
476
477 if (adapter->support_random_del && adapter->read_ldidmap )
478 switch (cmd->cmnd[0]) {
479 case READ_6: /* fall through */
480 case WRITE_6: /* fall through */
481 case READ_10: /* fall through */
482 case WRITE_10:
483 ldrv_num += 0x80;
484 }
485
486 return ldrv_num;
487 }
488
489 /**
490 * mega_build_cmd()
491 * @adapter - pointer to our soft state
492 * @cmd - Prepare using this scsi command
493 * @busy - busy flag if no resources
494 *
495 * Prepares a command and scatter gather list for the controller. This routine
496 * also finds out if the commands is intended for a logical drive or a
497 * physical device and prepares the controller command accordingly.
498 *
499 * We also re-order the logical drives and physical devices based on their
500 * boot settings.
501 */
502 static scb_t *
503 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
504 {
505 mega_ext_passthru *epthru;
506 mega_passthru *pthru;
507 scb_t *scb;
508 mbox_t *mbox;
509 long seg;
510 char islogical;
511 int max_ldrv_num;
512 int channel = 0;
513 int target = 0;
514 int ldrv_num = 0; /* logical drive number */
515
516
517 /*
518 * filter the internal and ioctl commands
519 */
520 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
521 return cmd->buffer;
522 }
523
524
525 /*
526 * We know what channels our logical drives are on - mega_find_card()
527 */
528 islogical = adapter->logdrv_chan[cmd->device->channel];
529
530 /*
531 * The theory: If physical drive is chosen for boot, all the physical
532 * devices are exported before the logical drives, otherwise physical
533 * devices are pushed after logical drives, in which case - Kernel sees
534 * the physical devices on virtual channel which is obviously converted
535 * to actual channel on the HBA.
536 */
537 if( adapter->boot_pdrv_enabled ) {
538 if( islogical ) {
539 /* logical channel */
540 channel = cmd->device->channel -
541 adapter->product_info.nchannels;
542 }
543 else {
544 /* this is physical channel */
545 channel = cmd->device->channel;
546 target = cmd->device->id;
547
548 /*
549 * boot from a physical disk, that disk needs to be
550 * exposed first IF both the channels are SCSI, then
551 * booting from the second channel is not allowed.
552 */
553 if( target == 0 ) {
554 target = adapter->boot_pdrv_tgt;
555 }
556 else if( target == adapter->boot_pdrv_tgt ) {
557 target = 0;
558 }
559 }
560 }
561 else {
562 if( islogical ) {
563 /* this is the logical channel */
564 channel = cmd->device->channel;
565 }
566 else {
567 /* physical channel */
568 channel = cmd->device->channel - NVIRT_CHAN;
569 target = cmd->device->id;
570 }
571 }
572
573
574 if(islogical) {
575
576 /* have just LUN 0 for each target on virtual channels */
577 if (cmd->device->lun) {
578 cmd->result = (DID_BAD_TARGET << 16);
579 cmd->scsi_done(cmd);
580 return NULL;
581 }
582
583 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
584
585
586 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
587 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
588
589 /*
590 * max_ldrv_num increases by 0x80 if some logical drive was
591 * deleted.
592 */
593 if(adapter->read_ldidmap)
594 max_ldrv_num += 0x80;
595
596 if(ldrv_num > max_ldrv_num ) {
597 cmd->result = (DID_BAD_TARGET << 16);
598 cmd->scsi_done(cmd);
599 return NULL;
600 }
601
602 }
603 else {
604 if( cmd->device->lun > 7) {
605 /*
606 * Do not support lun >7 for physically accessed
607 * devices
608 */
609 cmd->result = (DID_BAD_TARGET << 16);
610 cmd->scsi_done(cmd);
611 return NULL;
612 }
613 }
614
615 /*
616 *
617 * Logical drive commands
618 *
619 */
620 if(islogical) {
621 switch (cmd->cmnd[0]) {
622 case TEST_UNIT_READY:
623 memset(cmd->request_buffer, 0, cmd->request_bufflen);
624
625 #if MEGA_HAVE_CLUSTERING
626 /*
627 * Do we support clustering and is the support enabled
628 * If no, return success always
629 */
630 if( !adapter->has_cluster ) {
631 cmd->result = (DID_OK << 16);
632 cmd->scsi_done(cmd);
633 return NULL;
634 }
635
636 if(!(scb = mega_allocate_scb(adapter, cmd))) {
637 *busy = 1;
638 return NULL;
639 }
640
641 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
642 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
643 scb->raw_mbox[3] = ldrv_num;
644
645 scb->dma_direction = PCI_DMA_NONE;
646
647 return scb;
648 #else
649 cmd->result = (DID_OK << 16);
650 cmd->scsi_done(cmd);
651 return NULL;
652 #endif
653
654 case MODE_SENSE:
655 memset(cmd->request_buffer, 0, cmd->cmnd[4]);
656 cmd->result = (DID_OK << 16);
657 cmd->scsi_done(cmd);
658 return NULL;
659
660 case READ_CAPACITY:
661 case INQUIRY:
662
663 if(!(adapter->flag & (1L << cmd->device->channel))) {
664
665 printk(KERN_NOTICE
666 "scsi%d: scanning scsi channel %d ",
667 adapter->host->host_no,
668 cmd->device->channel);
669 printk("for logical drives.\n");
670
671 adapter->flag |= (1L << cmd->device->channel);
672 }
673
674 /* Allocate a SCB and initialize passthru */
675 if(!(scb = mega_allocate_scb(adapter, cmd))) {
676 *busy = 1;
677 return NULL;
678 }
679 pthru = scb->pthru;
680
681 mbox = (mbox_t *)scb->raw_mbox;
682 memset(mbox, 0, sizeof(scb->raw_mbox));
683 memset(pthru, 0, sizeof(mega_passthru));
684
685 pthru->timeout = 0;
686 pthru->ars = 1;
687 pthru->reqsenselen = 14;
688 pthru->islogical = 1;
689 pthru->logdrv = ldrv_num;
690 pthru->cdblen = cmd->cmd_len;
691 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
692
693 if( adapter->has_64bit_addr ) {
694 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
695 }
696 else {
697 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
698 }
699
700 scb->dma_direction = PCI_DMA_FROMDEVICE;
701
702 pthru->numsgelements = mega_build_sglist(adapter, scb,
703 &pthru->dataxferaddr, &pthru->dataxferlen);
704
705 mbox->m_out.xferaddr = scb->pthru_dma_addr;
706
707 return scb;
708
709 case READ_6:
710 case WRITE_6:
711 case READ_10:
712 case WRITE_10:
713 case READ_12:
714 case WRITE_12:
715
716 /* Allocate a SCB and initialize mailbox */
717 if(!(scb = mega_allocate_scb(adapter, cmd))) {
718 *busy = 1;
719 return NULL;
720 }
721 mbox = (mbox_t *)scb->raw_mbox;
722
723 memset(mbox, 0, sizeof(scb->raw_mbox));
724 mbox->m_out.logdrv = ldrv_num;
725
726 /*
727 * A little hack: 2nd bit is zero for all scsi read
728 * commands and is set for all scsi write commands
729 */
730 if( adapter->has_64bit_addr ) {
731 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
732 MEGA_MBOXCMD_LWRITE64:
733 MEGA_MBOXCMD_LREAD64 ;
734 }
735 else {
736 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
737 MEGA_MBOXCMD_LWRITE:
738 MEGA_MBOXCMD_LREAD ;
739 }
740
741 /*
742 * 6-byte READ(0x08) or WRITE(0x0A) cdb
743 */
744 if( cmd->cmd_len == 6 ) {
745 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
746 mbox->m_out.lba =
747 ((u32)cmd->cmnd[1] << 16) |
748 ((u32)cmd->cmnd[2] << 8) |
749 (u32)cmd->cmnd[3];
750
751 mbox->m_out.lba &= 0x1FFFFF;
752
753 #if MEGA_HAVE_STATS
754 /*
755 * Take modulo 0x80, since the logical drive
756 * number increases by 0x80 when a logical
757 * drive was deleted
758 */
759 if (*cmd->cmnd == READ_6) {
760 adapter->nreads[ldrv_num%0x80]++;
761 adapter->nreadblocks[ldrv_num%0x80] +=
762 mbox->m_out.numsectors;
763 } else {
764 adapter->nwrites[ldrv_num%0x80]++;
765 adapter->nwriteblocks[ldrv_num%0x80] +=
766 mbox->m_out.numsectors;
767 }
768 #endif
769 }
770
771 /*
772 * 10-byte READ(0x28) or WRITE(0x2A) cdb
773 */
774 if( cmd->cmd_len == 10 ) {
775 mbox->m_out.numsectors =
776 (u32)cmd->cmnd[8] |
777 ((u32)cmd->cmnd[7] << 8);
778 mbox->m_out.lba =
779 ((u32)cmd->cmnd[2] << 24) |
780 ((u32)cmd->cmnd[3] << 16) |
781 ((u32)cmd->cmnd[4] << 8) |
782 (u32)cmd->cmnd[5];
783
784 #if MEGA_HAVE_STATS
785 if (*cmd->cmnd == READ_10) {
786 adapter->nreads[ldrv_num%0x80]++;
787 adapter->nreadblocks[ldrv_num%0x80] +=
788 mbox->m_out.numsectors;
789 } else {
790 adapter->nwrites[ldrv_num%0x80]++;
791 adapter->nwriteblocks[ldrv_num%0x80] +=
792 mbox->m_out.numsectors;
793 }
794 #endif
795 }
796
797 /*
798 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
799 */
800 if( cmd->cmd_len == 12 ) {
801 mbox->m_out.lba =
802 ((u32)cmd->cmnd[2] << 24) |
803 ((u32)cmd->cmnd[3] << 16) |
804 ((u32)cmd->cmnd[4] << 8) |
805 (u32)cmd->cmnd[5];
806
807 mbox->m_out.numsectors =
808 ((u32)cmd->cmnd[6] << 24) |
809 ((u32)cmd->cmnd[7] << 16) |
810 ((u32)cmd->cmnd[8] << 8) |
811 (u32)cmd->cmnd[9];
812
813 #if MEGA_HAVE_STATS
814 if (*cmd->cmnd == READ_12) {
815 adapter->nreads[ldrv_num%0x80]++;
816 adapter->nreadblocks[ldrv_num%0x80] +=
817 mbox->m_out.numsectors;
818 } else {
819 adapter->nwrites[ldrv_num%0x80]++;
820 adapter->nwriteblocks[ldrv_num%0x80] +=
821 mbox->m_out.numsectors;
822 }
823 #endif
824 }
825
826 /*
827 * If it is a read command
828 */
829 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
830 scb->dma_direction = PCI_DMA_FROMDEVICE;
831 }
832 else {
833 scb->dma_direction = PCI_DMA_TODEVICE;
834 }
835
836 /* Calculate Scatter-Gather info */
837 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
838 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
839
840 return scb;
841
842 #if MEGA_HAVE_CLUSTERING
843 case RESERVE: /* Fall through */
844 case RELEASE:
845
846 /*
847 * Do we support clustering and is the support enabled
848 */
849 if( ! adapter->has_cluster ) {
850
851 cmd->result = (DID_BAD_TARGET << 16);
852 cmd->scsi_done(cmd);
853 return NULL;
854 }
855
856 /* Allocate a SCB and initialize mailbox */
857 if(!(scb = mega_allocate_scb(adapter, cmd))) {
858 *busy = 1;
859 return NULL;
860 }
861
862 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
863 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
864 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
865
866 scb->raw_mbox[3] = ldrv_num;
867
868 scb->dma_direction = PCI_DMA_NONE;
869
870 return scb;
871 #endif
872
873 default:
874 cmd->result = (DID_BAD_TARGET << 16);
875 cmd->scsi_done(cmd);
876 return NULL;
877 }
878 }
879
880 /*
881 * Passthru drive commands
882 */
883 else {
884 /* Allocate a SCB and initialize passthru */
885 if(!(scb = mega_allocate_scb(adapter, cmd))) {
886 *busy = 1;
887 return NULL;
888 }
889
890 mbox = (mbox_t *)scb->raw_mbox;
891 memset(mbox, 0, sizeof(scb->raw_mbox));
892
893 if( adapter->support_ext_cdb ) {
894
895 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
896 channel, target);
897
898 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
899
900 mbox->m_out.xferaddr = scb->epthru_dma_addr;
901
902 }
903 else {
904
905 pthru = mega_prepare_passthru(adapter, scb, cmd,
906 channel, target);
907
908 /* Initialize mailbox */
909 if( adapter->has_64bit_addr ) {
910 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
911 }
912 else {
913 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
914 }
915
916 mbox->m_out.xferaddr = scb->pthru_dma_addr;
917
918 }
919 return scb;
920 }
921 return NULL;
922 }
923
924
925 /**
926 * mega_prepare_passthru()
927 * @adapter - pointer to our soft state
928 * @scb - our scsi control block
929 * @cmd - scsi command from the mid-layer
930 * @channel - actual channel on the controller
931 * @target - actual id on the controller.
932 *
933 * prepare a command for the scsi physical devices.
934 */
935 static mega_passthru *
936 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
937 int channel, int target)
938 {
939 mega_passthru *pthru;
940
941 pthru = scb->pthru;
942 memset(pthru, 0, sizeof (mega_passthru));
943
944 /* 0=6sec/1=60sec/2=10min/3=3hrs */
945 pthru->timeout = 2;
946
947 pthru->ars = 1;
948 pthru->reqsenselen = 14;
949 pthru->islogical = 0;
950
951 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
952
953 pthru->target = (adapter->flag & BOARD_40LD) ?
954 (channel << 4) | target : target;
955
956 pthru->cdblen = cmd->cmd_len;
957 pthru->logdrv = cmd->device->lun;
958
959 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
960
961 /* Not sure about the direction */
962 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
963
964 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
965 switch (cmd->cmnd[0]) {
966 case INQUIRY:
967 case READ_CAPACITY:
968 if(!(adapter->flag & (1L << cmd->device->channel))) {
969
970 printk(KERN_NOTICE
971 "scsi%d: scanning scsi channel %d [P%d] ",
972 adapter->host->host_no,
973 cmd->device->channel, channel);
974 printk("for physical devices.\n");
975
976 adapter->flag |= (1L << cmd->device->channel);
977 }
978 /* Fall through */
979 default:
980 pthru->numsgelements = mega_build_sglist(adapter, scb,
981 &pthru->dataxferaddr, &pthru->dataxferlen);
982 break;
983 }
984 return pthru;
985 }
986
987
988 /**
989 * mega_prepare_extpassthru()
990 * @adapter - pointer to our soft state
991 * @scb - our scsi control block
992 * @cmd - scsi command from the mid-layer
993 * @channel - actual channel on the controller
994 * @target - actual id on the controller.
995 *
996 * prepare a command for the scsi physical devices. This rountine prepares
997 * commands for devices which can take extended CDBs (>10 bytes)
998 */
999 static mega_ext_passthru *
1000 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1001 int channel, int target)
1002 {
1003 mega_ext_passthru *epthru;
1004
1005 epthru = scb->epthru;
1006 memset(epthru, 0, sizeof(mega_ext_passthru));
1007
1008 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1009 epthru->timeout = 2;
1010
1011 epthru->ars = 1;
1012 epthru->reqsenselen = 14;
1013 epthru->islogical = 0;
1014
1015 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1016 epthru->target = (adapter->flag & BOARD_40LD) ?
1017 (channel << 4) | target : target;
1018
1019 epthru->cdblen = cmd->cmd_len;
1020 epthru->logdrv = cmd->device->lun;
1021
1022 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1023
1024 /* Not sure about the direction */
1025 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1026
1027 switch(cmd->cmnd[0]) {
1028 case INQUIRY:
1029 case READ_CAPACITY:
1030 if(!(adapter->flag & (1L << cmd->device->channel))) {
1031
1032 printk(KERN_NOTICE
1033 "scsi%d: scanning scsi channel %d [P%d] ",
1034 adapter->host->host_no,
1035 cmd->device->channel, channel);
1036 printk("for physical devices.\n");
1037
1038 adapter->flag |= (1L << cmd->device->channel);
1039 }
1040 /* Fall through */
1041 default:
1042 epthru->numsgelements = mega_build_sglist(adapter, scb,
1043 &epthru->dataxferaddr, &epthru->dataxferlen);
1044 break;
1045 }
1046
1047 return epthru;
1048 }
1049
1050 static void
1051 __mega_runpendq(adapter_t *adapter)
1052 {
1053 scb_t *scb;
1054 struct list_head *pos, *next;
1055
1056 /* Issue any pending commands to the card */
1057 list_for_each_safe(pos, next, &adapter->pending_list) {
1058
1059 scb = list_entry(pos, scb_t, list);
1060
1061 if( !(scb->state & SCB_ISSUED) ) {
1062
1063 if( issue_scb(adapter, scb) != 0 )
1064 return;
1065 }
1066 }
1067
1068 return;
1069 }
1070
1071
1072 /**
1073 * issue_scb()
1074 * @adapter - pointer to our soft state
1075 * @scb - scsi control block
1076 *
1077 * Post a command to the card if the mailbox is available, otherwise return
1078 * busy. We also take the scb from the pending list if the mailbox is
1079 * available.
1080 */
1081 static int
1082 issue_scb(adapter_t *adapter, scb_t *scb)
1083 {
1084 volatile mbox64_t *mbox64 = adapter->mbox64;
1085 volatile mbox_t *mbox = adapter->mbox;
1086 unsigned int i = 0;
1087
1088 if(unlikely(mbox->m_in.busy)) {
1089 do {
1090 udelay(1);
1091 i++;
1092 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1093
1094 if(mbox->m_in.busy) return -1;
1095 }
1096
1097 /* Copy mailbox data into host structure */
1098 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1099 sizeof(struct mbox_out));
1100
1101 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1102 mbox->m_in.busy = 1; /* Set busy */
1103
1104
1105 /*
1106 * Increment the pending queue counter
1107 */
1108 atomic_inc(&adapter->pend_cmds);
1109
1110 switch (mbox->m_out.cmd) {
1111 case MEGA_MBOXCMD_LREAD64:
1112 case MEGA_MBOXCMD_LWRITE64:
1113 case MEGA_MBOXCMD_PASSTHRU64:
1114 case MEGA_MBOXCMD_EXTPTHRU:
1115 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1116 mbox64->xfer_segment_hi = 0;
1117 mbox->m_out.xferaddr = 0xFFFFFFFF;
1118 break;
1119 default:
1120 mbox64->xfer_segment_lo = 0;
1121 mbox64->xfer_segment_hi = 0;
1122 }
1123
1124 /*
1125 * post the command
1126 */
1127 scb->state |= SCB_ISSUED;
1128
1129 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1130 mbox->m_in.poll = 0;
1131 mbox->m_in.ack = 0;
1132 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1133 }
1134 else {
1135 irq_enable(adapter);
1136 issue_command(adapter);
1137 }
1138
1139 return 0;
1140 }
1141
1142 /*
1143 * Wait until the controller's mailbox is available
1144 */
1145 static inline int
1146 mega_busywait_mbox (adapter_t *adapter)
1147 {
1148 if (adapter->mbox->m_in.busy)
1149 return __mega_busywait_mbox(adapter);
1150 return 0;
1151 }
1152
1153 /**
1154 * issue_scb_block()
1155 * @adapter - pointer to our soft state
1156 * @raw_mbox - the mailbox
1157 *
1158 * Issue a scb in synchronous and non-interrupt mode
1159 */
1160 static int
1161 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1162 {
1163 volatile mbox64_t *mbox64 = adapter->mbox64;
1164 volatile mbox_t *mbox = adapter->mbox;
1165 u8 byte;
1166
1167 /* Wait until mailbox is free */
1168 if(mega_busywait_mbox (adapter))
1169 goto bug_blocked_mailbox;
1170
1171 /* Copy mailbox data into host structure */
1172 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1173 mbox->m_out.cmdid = 0xFE;
1174 mbox->m_in.busy = 1;
1175
1176 switch (raw_mbox[0]) {
1177 case MEGA_MBOXCMD_LREAD64:
1178 case MEGA_MBOXCMD_LWRITE64:
1179 case MEGA_MBOXCMD_PASSTHRU64:
1180 case MEGA_MBOXCMD_EXTPTHRU:
1181 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1182 mbox64->xfer_segment_hi = 0;
1183 mbox->m_out.xferaddr = 0xFFFFFFFF;
1184 break;
1185 default:
1186 mbox64->xfer_segment_lo = 0;
1187 mbox64->xfer_segment_hi = 0;
1188 }
1189
1190 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1191 mbox->m_in.poll = 0;
1192 mbox->m_in.ack = 0;
1193 mbox->m_in.numstatus = 0xFF;
1194 mbox->m_in.status = 0xFF;
1195 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1196
1197 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1198 cpu_relax();
1199
1200 mbox->m_in.numstatus = 0xFF;
1201
1202 while( (volatile u8)mbox->m_in.poll != 0x77 )
1203 cpu_relax();
1204
1205 mbox->m_in.poll = 0;
1206 mbox->m_in.ack = 0x77;
1207
1208 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1209
1210 while(RDINDOOR(adapter) & 0x2)
1211 cpu_relax();
1212 }
1213 else {
1214 irq_disable(adapter);
1215 issue_command(adapter);
1216
1217 while (!((byte = irq_state(adapter)) & INTR_VALID))
1218 cpu_relax();
1219
1220 set_irq_state(adapter, byte);
1221 irq_enable(adapter);
1222 irq_ack(adapter);
1223 }
1224
1225 return mbox->m_in.status;
1226
1227 bug_blocked_mailbox:
1228 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1229 udelay (1000);
1230 return -1;
1231 }
1232
1233
1234 /**
1235 * megaraid_isr_iomapped()
1236 * @irq - irq
1237 * @devp - pointer to our soft state
1238 * @regs - unused
1239 *
1240 * Interrupt service routine for io-mapped controllers.
1241 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1242 * and service the completed commands.
1243 */
1244 static irqreturn_t
1245 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1246 {
1247 adapter_t *adapter = devp;
1248 unsigned long flags;
1249 u8 status;
1250 u8 nstatus;
1251 u8 completed[MAX_FIRMWARE_STATUS];
1252 u8 byte;
1253 int handled = 0;
1254
1255
1256 /*
1257 * loop till F/W has more commands for us to complete.
1258 */
1259 spin_lock_irqsave(&adapter->lock, flags);
1260
1261 do {
1262 /* Check if a valid interrupt is pending */
1263 byte = irq_state(adapter);
1264 if( (byte & VALID_INTR_BYTE) == 0 ) {
1265 /*
1266 * No more pending commands
1267 */
1268 goto out_unlock;
1269 }
1270 set_irq_state(adapter, byte);
1271
1272 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1273 == 0xFF)
1274 cpu_relax();
1275 adapter->mbox->m_in.numstatus = 0xFF;
1276
1277 status = adapter->mbox->m_in.status;
1278
1279 /*
1280 * decrement the pending queue counter
1281 */
1282 atomic_sub(nstatus, &adapter->pend_cmds);
1283
1284 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1285 nstatus);
1286
1287 /* Acknowledge interrupt */
1288 irq_ack(adapter);
1289
1290 mega_cmd_done(adapter, completed, nstatus, status);
1291
1292 mega_rundoneq(adapter);
1293
1294 handled = 1;
1295
1296 /* Loop through any pending requests */
1297 if(atomic_read(&adapter->quiescent) == 0) {
1298 mega_runpendq(adapter);
1299 }
1300
1301 } while(1);
1302
1303 out_unlock:
1304
1305 spin_unlock_irqrestore(&adapter->lock, flags);
1306
1307 return IRQ_RETVAL(handled);
1308 }
1309
1310
1311 /**
1312 * megaraid_isr_memmapped()
1313 * @irq - irq
1314 * @devp - pointer to our soft state
1315 * @regs - unused
1316 *
1317 * Interrupt service routine for memory-mapped controllers.
1318 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1319 * and service the completed commands.
1320 */
1321 static irqreturn_t
1322 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
1323 {
1324 adapter_t *adapter = devp;
1325 unsigned long flags;
1326 u8 status;
1327 u32 dword = 0;
1328 u8 nstatus;
1329 u8 completed[MAX_FIRMWARE_STATUS];
1330 int handled = 0;
1331
1332
1333 /*
1334 * loop till F/W has more commands for us to complete.
1335 */
1336 spin_lock_irqsave(&adapter->lock, flags);
1337
1338 do {
1339 /* Check if a valid interrupt is pending */
1340 dword = RDOUTDOOR(adapter);
1341 if(dword != 0x10001234) {
1342 /*
1343 * No more pending commands
1344 */
1345 goto out_unlock;
1346 }
1347 WROUTDOOR(adapter, 0x10001234);
1348
1349 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1350 == 0xFF) {
1351 cpu_relax();
1352 }
1353 adapter->mbox->m_in.numstatus = 0xFF;
1354
1355 status = adapter->mbox->m_in.status;
1356
1357 /*
1358 * decrement the pending queue counter
1359 */
1360 atomic_sub(nstatus, &adapter->pend_cmds);
1361
1362 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1363 nstatus);
1364
1365 /* Acknowledge interrupt */
1366 WRINDOOR(adapter, 0x2);
1367
1368 handled = 1;
1369
1370 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1371
1372 mega_cmd_done(adapter, completed, nstatus, status);
1373
1374 mega_rundoneq(adapter);
1375
1376 /* Loop through any pending requests */
1377 if(atomic_read(&adapter->quiescent) == 0) {
1378 mega_runpendq(adapter);
1379 }
1380
1381 } while(1);
1382
1383 out_unlock:
1384
1385 spin_unlock_irqrestore(&adapter->lock, flags);
1386
1387 return IRQ_RETVAL(handled);
1388 }
1389 /**
1390 * mega_cmd_done()
1391 * @adapter - pointer to our soft state
1392 * @completed - array of ids of completed commands
1393 * @nstatus - number of completed commands
1394 * @status - status of the last command completed
1395 *
1396 * Complete the comamnds and call the scsi mid-layer callback hooks.
1397 */
1398 static void
1399 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1400 {
1401 mega_ext_passthru *epthru = NULL;
1402 struct scatterlist *sgl;
1403 Scsi_Cmnd *cmd = NULL;
1404 mega_passthru *pthru = NULL;
1405 mbox_t *mbox = NULL;
1406 u8 c;
1407 scb_t *scb;
1408 int islogical;
1409 int cmdid;
1410 int i;
1411
1412 /*
1413 * for all the commands completed, call the mid-layer callback routine
1414 * and free the scb.
1415 */
1416 for( i = 0; i < nstatus; i++ ) {
1417
1418 cmdid = completed[i];
1419
1420 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1421 scb = &adapter->int_scb;
1422 cmd = scb->cmd;
1423 mbox = (mbox_t *)scb->raw_mbox;
1424
1425 /*
1426 * Internal command interface do not fire the extended
1427 * passthru or 64-bit passthru
1428 */
1429 pthru = scb->pthru;
1430
1431 }
1432 else {
1433 scb = &adapter->scb_list[cmdid];
1434
1435 /*
1436 * Make sure f/w has completed a valid command
1437 */
1438 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1439 printk(KERN_CRIT
1440 "megaraid: invalid command ");
1441 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1442 cmdid, scb->state, scb->cmd);
1443
1444 continue;
1445 }
1446
1447 /*
1448 * Was a abort issued for this command
1449 */
1450 if( scb->state & SCB_ABORT ) {
1451
1452 printk(KERN_WARNING
1453 "megaraid: aborted cmd %lx[%x] complete.\n",
1454 scb->cmd->serial_number, scb->idx);
1455
1456 scb->cmd->result = (DID_ABORT << 16);
1457
1458 list_add_tail(SCSI_LIST(scb->cmd),
1459 &adapter->completed_list);
1460
1461 mega_free_scb(adapter, scb);
1462
1463 continue;
1464 }
1465
1466 /*
1467 * Was a reset issued for this command
1468 */
1469 if( scb->state & SCB_RESET ) {
1470
1471 printk(KERN_WARNING
1472 "megaraid: reset cmd %lx[%x] complete.\n",
1473 scb->cmd->serial_number, scb->idx);
1474
1475 scb->cmd->result = (DID_RESET << 16);
1476
1477 list_add_tail(SCSI_LIST(scb->cmd),
1478 &adapter->completed_list);
1479
1480 mega_free_scb (adapter, scb);
1481
1482 continue;
1483 }
1484
1485 cmd = scb->cmd;
1486 pthru = scb->pthru;
1487 epthru = scb->epthru;
1488 mbox = (mbox_t *)scb->raw_mbox;
1489
1490 #if MEGA_HAVE_STATS
1491 {
1492
1493 int logdrv = mbox->m_out.logdrv;
1494
1495 islogical = adapter->logdrv_chan[cmd->channel];
1496 /*
1497 * Maintain an error counter for the logical drive.
1498 * Some application like SNMP agent need such
1499 * statistics
1500 */
1501 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1502 cmd->cmnd[0] == READ_10 ||
1503 cmd->cmnd[0] == READ_12)) {
1504 /*
1505 * Logical drive number increases by 0x80 when
1506 * a logical drive is deleted
1507 */
1508 adapter->rd_errors[logdrv%0x80]++;
1509 }
1510
1511 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1512 cmd->cmnd[0] == WRITE_10 ||
1513 cmd->cmnd[0] == WRITE_12)) {
1514 /*
1515 * Logical drive number increases by 0x80 when
1516 * a logical drive is deleted
1517 */
1518 adapter->wr_errors[logdrv%0x80]++;
1519 }
1520
1521 }
1522 #endif
1523 }
1524
1525 /*
1526 * Do not return the presence of hard disk on the channel so,
1527 * inquiry sent, and returned data==hard disk or removable
1528 * hard disk and not logical, request should return failure! -
1529 * PJ
1530 */
1531 islogical = adapter->logdrv_chan[cmd->device->channel];
1532 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1533
1534 if( cmd->use_sg ) {
1535 sgl = (struct scatterlist *)
1536 cmd->request_buffer;
1537
1538 if( sgl->page ) {
1539 c = *(unsigned char *)
1540 page_address((&sgl[0])->page) +
1541 (&sgl[0])->offset;
1542 }
1543 else {
1544 printk(KERN_WARNING
1545 "megaraid: invalid sg.\n");
1546 c = 0;
1547 }
1548 }
1549 else {
1550 c = *(u8 *)cmd->request_buffer;
1551 }
1552
1553 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1554 ((c & 0x1F ) == TYPE_DISK)) {
1555 status = 0xF0;
1556 }
1557 }
1558
1559 /* clear result; otherwise, success returns corrupt value */
1560 cmd->result = 0;
1561
1562 /* Convert MegaRAID status to Linux error code */
1563 switch (status) {
1564 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1565 cmd->result |= (DID_OK << 16);
1566 break;
1567
1568 case 0x02: /* ERROR_ABORTED, i.e.
1569 SCSI_STATUS_CHECK_CONDITION */
1570
1571 /* set sense_buffer and result fields */
1572 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1573 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1574
1575 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1576 14);
1577
1578 cmd->result = (DRIVER_SENSE << 24) |
1579 (DID_OK << 16) |
1580 (CHECK_CONDITION << 1);
1581 }
1582 else {
1583 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1584
1585 memcpy(cmd->sense_buffer,
1586 epthru->reqsensearea, 14);
1587
1588 cmd->result = (DRIVER_SENSE << 24) |
1589 (DID_OK << 16) |
1590 (CHECK_CONDITION << 1);
1591 } else {
1592 cmd->sense_buffer[0] = 0x70;
1593 cmd->sense_buffer[2] = ABORTED_COMMAND;
1594 cmd->result |= (CHECK_CONDITION << 1);
1595 }
1596 }
1597 break;
1598
1599 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1600 SCSI_STATUS_BUSY */
1601 cmd->result |= (DID_BUS_BUSY << 16) | status;
1602 break;
1603
1604 default:
1605 #if MEGA_HAVE_CLUSTERING
1606 /*
1607 * If TEST_UNIT_READY fails, we know
1608 * MEGA_RESERVATION_STATUS failed
1609 */
1610 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1611 cmd->result |= (DID_ERROR << 16) |
1612 (RESERVATION_CONFLICT << 1);
1613 }
1614 else
1615 /*
1616 * Error code returned is 1 if Reserve or Release
1617 * failed or the input parameter is invalid
1618 */
1619 if( status == 1 &&
1620 (cmd->cmnd[0] == RESERVE ||
1621 cmd->cmnd[0] == RELEASE) ) {
1622
1623 cmd->result |= (DID_ERROR << 16) |
1624 (RESERVATION_CONFLICT << 1);
1625 }
1626 else
1627 #endif
1628 cmd->result |= (DID_BAD_TARGET << 16)|status;
1629 }
1630
1631 /*
1632 * Only free SCBs for the commands coming down from the
1633 * mid-layer, not for which were issued internally
1634 *
1635 * For internal command, restore the status returned by the
1636 * firmware so that user can interpret it.
1637 */
1638 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1639 cmd->result = status;
1640
1641 /*
1642 * Remove the internal command from the pending list
1643 */
1644 list_del_init(&scb->list);
1645 scb->state = SCB_FREE;
1646 }
1647 else {
1648 mega_free_scb(adapter, scb);
1649 }
1650
1651 /* Add Scsi_Command to end of completed queue */
1652 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1653 }
1654 }
1655
1656
1657 /*
1658 * mega_runpendq()
1659 *
1660 * Run through the list of completed requests and finish it
1661 */
1662 static void
1663 mega_rundoneq (adapter_t *adapter)
1664 {
1665 Scsi_Cmnd *cmd;
1666 struct list_head *pos;
1667
1668 list_for_each(pos, &adapter->completed_list) {
1669
1670 Scsi_Pointer* spos = (Scsi_Pointer *)pos;
1671
1672 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1673 cmd->scsi_done(cmd);
1674 }
1675
1676 INIT_LIST_HEAD(&adapter->completed_list);
1677 }
1678
1679
1680 /*
1681 * Free a SCB structure
1682 * Note: We assume the scsi commands associated with this scb is not free yet.
1683 */
1684 static void
1685 mega_free_scb(adapter_t *adapter, scb_t *scb)
1686 {
1687 switch( scb->dma_type ) {
1688
1689 case MEGA_DMA_TYPE_NONE:
1690 break;
1691
1692 case MEGA_BULK_DATA:
1693 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1694 scb->cmd->request_bufflen, scb->dma_direction);
1695 break;
1696
1697 case MEGA_SGLIST:
1698 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1699 scb->cmd->use_sg, scb->dma_direction);
1700 break;
1701
1702 default:
1703 break;
1704 }
1705
1706 /*
1707 * Remove from the pending list
1708 */
1709 list_del_init(&scb->list);
1710
1711 /* Link the scb back into free list */
1712 scb->state = SCB_FREE;
1713 scb->cmd = NULL;
1714
1715 list_add(&scb->list, &adapter->free_list);
1716 }
1717
1718
1719 static int
1720 __mega_busywait_mbox (adapter_t *adapter)
1721 {
1722 volatile mbox_t *mbox = adapter->mbox;
1723 long counter;
1724
1725 for (counter = 0; counter < 10000; counter++) {
1726 if (!mbox->m_in.busy)
1727 return 0;
1728 udelay(100); yield();
1729 }
1730 return -1; /* give up after 1 second */
1731 }
1732
1733 /*
1734 * Copies data to SGLIST
1735 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1736 */
1737 static int
1738 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1739 {
1740 struct scatterlist *sgl;
1741 struct page *page;
1742 unsigned long offset;
1743 Scsi_Cmnd *cmd;
1744 int sgcnt;
1745 int idx;
1746
1747 cmd = scb->cmd;
1748
1749 /* Scatter-gather not used */
1750 if( !cmd->use_sg ) {
1751
1752 page = virt_to_page(cmd->request_buffer);
1753 offset = offset_in_page(cmd->request_buffer);
1754
1755 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1756 page, offset,
1757 cmd->request_bufflen,
1758 scb->dma_direction);
1759 scb->dma_type = MEGA_BULK_DATA;
1760
1761 /*
1762 * We need to handle special 64-bit commands that need a
1763 * minimum of 1 SG
1764 */
1765 if( adapter->has_64bit_addr ) {
1766 scb->sgl64[0].address = scb->dma_h_bulkdata;
1767 scb->sgl64[0].length = cmd->request_bufflen;
1768 *buf = (u32)scb->sgl_dma_addr;
1769 *len = (u32)cmd->request_bufflen;
1770 return 1;
1771 }
1772 else {
1773 *buf = (u32)scb->dma_h_bulkdata;
1774 *len = (u32)cmd->request_bufflen;
1775 }
1776 return 0;
1777 }
1778
1779 sgl = (struct scatterlist *)cmd->request_buffer;
1780
1781 /*
1782 * Copy Scatter-Gather list info into controller structure.
1783 *
1784 * The number of sg elements returned must not exceed our limit
1785 */
1786 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1787 scb->dma_direction);
1788
1789 scb->dma_type = MEGA_SGLIST;
1790
1791 if( sgcnt > adapter->sglen ) BUG();
1792
1793 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1794
1795 if( adapter->has_64bit_addr ) {
1796 scb->sgl64[idx].address = sg_dma_address(sgl);
1797 scb->sgl64[idx].length = sg_dma_len(sgl);
1798 }
1799 else {
1800 scb->sgl[idx].address = sg_dma_address(sgl);
1801 scb->sgl[idx].length = sg_dma_len(sgl);
1802 }
1803 }
1804
1805 /* Reset pointer and length fields */
1806 *buf = scb->sgl_dma_addr;
1807
1808 /*
1809 * For passthru command, dataxferlen must be set, even for commands
1810 * with a sg list
1811 */
1812 *len = (u32)cmd->request_bufflen;
1813
1814 /* Return count of SG requests */
1815 return sgcnt;
1816 }
1817
1818
1819 /*
1820 * mega_8_to_40ld()
1821 *
1822 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1823 * Enquiry3 structures for later use
1824 */
1825 static void
1826 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1827 mega_product_info *product_info)
1828 {
1829 int i;
1830
1831 product_info->max_commands = inquiry->adapter_info.max_commands;
1832 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1833 product_info->nchannels = inquiry->adapter_info.nchannels;
1834
1835 for (i = 0; i < 4; i++) {
1836 product_info->fw_version[i] =
1837 inquiry->adapter_info.fw_version[i];
1838
1839 product_info->bios_version[i] =
1840 inquiry->adapter_info.bios_version[i];
1841 }
1842 enquiry3->cache_flush_interval =
1843 inquiry->adapter_info.cache_flush_interval;
1844
1845 product_info->dram_size = inquiry->adapter_info.dram_size;
1846
1847 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1848
1849 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1850 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1851 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1852 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1853 }
1854
1855 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1856 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1857 }
1858
1859 static inline void
1860 mega_free_sgl(adapter_t *adapter)
1861 {
1862 scb_t *scb;
1863 int i;
1864
1865 for(i = 0; i < adapter->max_cmds; i++) {
1866
1867 scb = &adapter->scb_list[i];
1868
1869 if( scb->sgl64 ) {
1870 pci_free_consistent(adapter->dev,
1871 sizeof(mega_sgl64) * adapter->sglen,
1872 scb->sgl64,
1873 scb->sgl_dma_addr);
1874
1875 scb->sgl64 = NULL;
1876 }
1877
1878 if( scb->pthru ) {
1879 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1880 scb->pthru, scb->pthru_dma_addr);
1881
1882 scb->pthru = NULL;
1883 }
1884
1885 if( scb->epthru ) {
1886 pci_free_consistent(adapter->dev,
1887 sizeof(mega_ext_passthru),
1888 scb->epthru, scb->epthru_dma_addr);
1889
1890 scb->epthru = NULL;
1891 }
1892
1893 }
1894 }
1895
1896
1897 /*
1898 * Get information about the card/driver
1899 */
1900 const char *
1901 megaraid_info(struct Scsi_Host *host)
1902 {
1903 static char buffer[512];
1904 adapter_t *adapter;
1905
1906 adapter = (adapter_t *)host->hostdata;
1907
1908 sprintf (buffer,
1909 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1910 adapter->fw_version, adapter->product_info.max_commands,
1911 adapter->host->max_id, adapter->host->max_channel,
1912 adapter->host->max_lun);
1913 return buffer;
1914 }
1915
1916 /*
1917 * Abort a previous SCSI request. Only commands on the pending list can be
1918 * aborted. All the commands issued to the F/W must complete.
1919 */
1920 static int
1921 megaraid_abort(Scsi_Cmnd *cmd)
1922 {
1923 adapter_t *adapter;
1924 int rval;
1925
1926 adapter = (adapter_t *)cmd->device->host->hostdata;
1927
1928 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1929
1930 /*
1931 * This is required here to complete any completed requests
1932 * to be communicated over to the mid layer.
1933 */
1934 mega_rundoneq(adapter);
1935
1936 return rval;
1937 }
1938
1939
1940 static int
1941 __megaraid_reset(Scsi_Cmnd *cmd)
1942 {
1943 adapter_t *adapter;
1944 megacmd_t mc;
1945 int rval;
1946
1947 adapter = (adapter_t *)cmd->device->host->hostdata;
1948
1949 #if MEGA_HAVE_CLUSTERING
1950 mc.cmd = MEGA_CLUSTER_CMD;
1951 mc.opcode = MEGA_RESET_RESERVATIONS;
1952
1953 spin_unlock_irq(&adapter->lock);
1954 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
1955 printk(KERN_WARNING
1956 "megaraid: reservation reset failed.\n");
1957 }
1958 else {
1959 printk(KERN_INFO "megaraid: reservation reset.\n");
1960 }
1961 spin_lock_irq(&adapter->lock);
1962 #endif
1963
1964 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1965
1966 /*
1967 * This is required here to complete any completed requests
1968 * to be communicated over to the mid layer.
1969 */
1970 mega_rundoneq(adapter);
1971
1972 return rval;
1973 }
1974
1975 static int
1976 megaraid_reset(Scsi_Cmnd *cmd)
1977 {
1978 adapter = (adapter_t *)cmd->device->host->hostdata;
1979 int rc;
1980
1981 spin_lock_irq(&adapter->lock);
1982 rc = __megaraid_reset(cmd);
1983 spin_unlock_irq(&adapter->lock);
1984
1985 return rc;
1986 }
1987
1988
1989 /**
1990 * megaraid_abort_and_reset()
1991 * @adapter - megaraid soft state
1992 * @cmd - scsi command to be aborted or reset
1993 * @aor - abort or reset flag
1994 *
1995 * Try to locate the scsi command in the pending queue. If found and is not
1996 * issued to the controller, abort/reset it. Otherwise return failure
1997 */
1998 static int
1999 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2000 {
2001 struct list_head *pos, *next;
2002 scb_t *scb;
2003
2004 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2005 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2006 cmd->cmnd[0], cmd->device->channel,
2007 cmd->device->id, cmd->device->lun);
2008
2009 if(list_empty(&adapter->pending_list))
2010 return FALSE;
2011
2012 list_for_each_safe(pos, next, &adapter->pending_list) {
2013
2014 scb = list_entry(pos, scb_t, list);
2015
2016 if (scb->cmd == cmd) { /* Found command */
2017
2018 scb->state |= aor;
2019
2020 /*
2021 * Check if this command has firmare owenership. If
2022 * yes, we cannot reset this command. Whenever, f/w
2023 * completes this command, we will return appropriate
2024 * status from ISR.
2025 */
2026 if( scb->state & SCB_ISSUED ) {
2027
2028 printk(KERN_WARNING
2029 "megaraid: %s-%lx[%x], fw owner.\n",
2030 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2031 cmd->serial_number, scb->idx);
2032
2033 return FALSE;
2034 }
2035 else {
2036
2037 /*
2038 * Not yet issued! Remove from the pending
2039 * list
2040 */
2041 printk(KERN_WARNING
2042 "megaraid: %s-%lx[%x], driver owner.\n",
2043 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2044 cmd->serial_number, scb->idx);
2045
2046 mega_free_scb(adapter, scb);
2047
2048 if( aor == SCB_ABORT ) {
2049 cmd->result = (DID_ABORT << 16);
2050 }
2051 else {
2052 cmd->result = (DID_RESET << 16);
2053 }
2054
2055 list_add_tail(SCSI_LIST(cmd),
2056 &adapter->completed_list);
2057
2058 return TRUE;
2059 }
2060 }
2061 }
2062
2063 return FALSE;
2064 }
2065
2066 static inline int
2067 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2068 {
2069 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2070
2071 if( *pdev == NULL ) return -1;
2072
2073 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2074
2075 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
2076 kfree(*pdev);
2077 return -1;
2078 }
2079
2080 return 0;
2081 }
2082
2083 static inline void
2084 free_local_pdev(struct pci_dev *pdev)
2085 {
2086 kfree(pdev);
2087 }
2088
2089 /**
2090 * mega_allocate_inquiry()
2091 * @dma_handle - handle returned for dma address
2092 * @pdev - handle to pci device
2093 *
2094 * allocates memory for inquiry structure
2095 */
2096 static inline void *
2097 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2098 {
2099 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2100 }
2101
2102
2103 static inline void
2104 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2105 {
2106 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2107 }
2108
2109
2110 #ifdef CONFIG_PROC_FS
2111 /* Following code handles /proc fs */
2112
2113 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2114 S_IRUSR | S_IFREG, \
2115 controller_proc_dir_entry, \
2116 func, adapter)
2117
2118 /**
2119 * mega_create_proc_entry()
2120 * @index - index in soft state array
2121 * @parent - parent node for this /proc entry
2122 *
2123 * Creates /proc entries for our controllers.
2124 */
2125 static void
2126 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2127 {
2128 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2129 u8 string[64] = { 0 };
2130 adapter_t *adapter = hba_soft_state[index];
2131
2132 sprintf(string, "hba%d", adapter->host->host_no);
2133
2134 controller_proc_dir_entry =
2135 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2136
2137 if(!controller_proc_dir_entry) {
2138 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2139 return;
2140 }
2141 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2142 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2143 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2144 #if MEGA_HAVE_ENH_PROC
2145 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2146 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2147 proc_battery);
2148
2149 /*
2150 * Display each physical drive on its channel
2151 */
2152 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2153 proc_pdrv_ch0);
2154 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2155 proc_pdrv_ch1);
2156 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2157 proc_pdrv_ch2);
2158 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2159 proc_pdrv_ch3);
2160
2161 /*
2162 * Display a set of up to 10 logical drive through each of following
2163 * /proc entries
2164 */
2165 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2166 proc_rdrv_10);
2167 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2168 proc_rdrv_20);
2169 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2170 proc_rdrv_30);
2171 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2172 proc_rdrv_40);
2173 #endif
2174 }
2175
2176
2177 /**
2178 * proc_read_config()
2179 * @page - buffer to write the data in
2180 * @start - where the actual data has been written in page
2181 * @offset - same meaning as the read system call
2182 * @count - same meaning as the read system call
2183 * @eof - set if no more data needs to be returned
2184 * @data - pointer to our soft state
2185 *
2186 * Display configuration information about the controller.
2187 */
2188 static int
2189 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2190 void *data)
2191 {
2192
2193 adapter_t *adapter = (adapter_t *)data;
2194 int len = 0;
2195
2196 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2197
2198 if(adapter->product_info.product_name[0])
2199 len += sprintf(page+len, "%s\n",
2200 adapter->product_info.product_name);
2201
2202 len += sprintf(page+len, "Controller Type: ");
2203
2204 if( adapter->flag & BOARD_MEMMAP ) {
2205 len += sprintf(page+len,
2206 "438/466/467/471/493/518/520/531/532\n");
2207 }
2208 else {
2209 len += sprintf(page+len,
2210 "418/428/434\n");
2211 }
2212
2213 if(adapter->flag & BOARD_40LD) {
2214 len += sprintf(page+len,
2215 "Controller Supports 40 Logical Drives\n");
2216 }
2217
2218 if(adapter->flag & BOARD_64BIT) {
2219 len += sprintf(page+len,
2220 "Controller capable of 64-bit memory addressing\n");
2221 }
2222 if( adapter->has_64bit_addr ) {
2223 len += sprintf(page+len,
2224 "Controller using 64-bit memory addressing\n");
2225 }
2226 else {
2227 len += sprintf(page+len,
2228 "Controller is not using 64-bit memory addressing\n");
2229 }
2230
2231 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2232 adapter->host->irq);
2233
2234 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2235 adapter->numldrv, adapter->product_info.nchannels);
2236
2237 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2238 adapter->fw_version, adapter->bios_version,
2239 adapter->product_info.dram_size);
2240
2241 len += sprintf(page+len,
2242 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2243 adapter->product_info.max_commands, adapter->max_cmds);
2244
2245 len += sprintf(page+len, "support_ext_cdb = %d\n",
2246 adapter->support_ext_cdb);
2247 len += sprintf(page+len, "support_random_del = %d\n",
2248 adapter->support_random_del);
2249 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2250 adapter->boot_ldrv_enabled);
2251 len += sprintf(page+len, "boot_ldrv = %d\n",
2252 adapter->boot_ldrv);
2253 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2254 adapter->boot_pdrv_enabled);
2255 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2256 adapter->boot_pdrv_ch);
2257 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2258 adapter->boot_pdrv_tgt);
2259 len += sprintf(page+len, "quiescent = %d\n",
2260 atomic_read(&adapter->quiescent));
2261 len += sprintf(page+len, "has_cluster = %d\n",
2262 adapter->has_cluster);
2263
2264 len += sprintf(page+len, "\nModule Parameters:\n");
2265 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2266 max_cmd_per_lun);
2267 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2268 max_sectors_per_io);
2269
2270 *eof = 1;
2271
2272 return len;
2273 }
2274
2275
2276
2277 /**
2278 * proc_read_stat()
2279 * @page - buffer to write the data in
2280 * @start - where the actual data has been written in page
2281 * @offset - same meaning as the read system call
2282 * @count - same meaning as the read system call
2283 * @eof - set if no more data needs to be returned
2284 * @data - pointer to our soft state
2285 *
2286 * Diaplay statistical information about the I/O activity.
2287 */
2288 static int
2289 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2290 void *data)
2291 {
2292 adapter_t *adapter;
2293 int len;
2294 int i;
2295
2296 i = 0; /* avoid compilation warnings */
2297 len = 0;
2298 adapter = (adapter_t *)data;
2299
2300 len = sprintf(page, "Statistical Information for this controller\n");
2301 len += sprintf(page+len, "pend_cmds = %d\n",
2302 atomic_read(&adapter->pend_cmds));
2303 #if MEGA_HAVE_STATS
2304 for(i = 0; i < adapter->numldrv; i++) {
2305 len += sprintf(page+len, "Logical Drive %d:\n", i);
2306
2307 len += sprintf(page+len,
2308 "\tReads Issued = %lu, Writes Issued = %lu\n",
2309 adapter->nreads[i], adapter->nwrites[i]);
2310
2311 len += sprintf(page+len,
2312 "\tSectors Read = %lu, Sectors Written = %lu\n",
2313 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2314
2315 len += sprintf(page+len,
2316 "\tRead errors = %lu, Write errors = %lu\n\n",
2317 adapter->rd_errors[i], adapter->wr_errors[i]);
2318 }
2319 #else
2320 len += sprintf(page+len,
2321 "IO and error counters not compiled in driver.\n");
2322 #endif
2323
2324 *eof = 1;
2325
2326 return len;
2327 }
2328
2329
2330 /**
2331 * proc_read_mbox()
2332 * @page - buffer to write the data in
2333 * @start - where the actual data has been written in page
2334 * @offset - same meaning as the read system call
2335 * @count - same meaning as the read system call
2336 * @eof - set if no more data needs to be returned
2337 * @data - pointer to our soft state
2338 *
2339 * Display mailbox information for the last command issued. This information
2340 * is good for debugging.
2341 */
2342 static int
2343 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2344 void *data)
2345 {
2346
2347 adapter_t *adapter = (adapter_t *)data;
2348 volatile mbox_t *mbox = adapter->mbox;
2349 int len = 0;
2350
2351 len = sprintf(page, "Contents of Mail Box Structure\n");
2352 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2353 mbox->m_out.cmd);
2354 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2355 mbox->m_out.cmdid);
2356 len += sprintf(page+len, " No of Sectors= %04d\n",
2357 mbox->m_out.numsectors);
2358 len += sprintf(page+len, " LBA = 0x%02x\n",
2359 mbox->m_out.lba);
2360 len += sprintf(page+len, " DTA = 0x%08x\n",
2361 mbox->m_out.xferaddr);
2362 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2363 mbox->m_out.logdrv);
2364 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2365 mbox->m_out.numsgelements);
2366 len += sprintf(page+len, " Busy = %01x\n",
2367 mbox->m_in.busy);
2368 len += sprintf(page+len, " Status = 0x%02x\n",
2369 mbox->m_in.status);
2370
2371 *eof = 1;
2372
2373 return len;
2374 }
2375
2376
2377 /**
2378 * proc_rebuild_rate()
2379 * @page - buffer to write the data in
2380 * @start - where the actual data has been written in page
2381 * @offset - same meaning as the read system call
2382 * @count - same meaning as the read system call
2383 * @eof - set if no more data needs to be returned
2384 * @data - pointer to our soft state
2385 *
2386 * Display current rebuild rate
2387 */
2388 static int
2389 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2390 void *data)
2391 {
2392 adapter_t *adapter = (adapter_t *)data;
2393 dma_addr_t dma_handle;
2394 caddr_t inquiry;
2395 struct pci_dev *pdev;
2396 int len = 0;
2397
2398 if( make_local_pdev(adapter, &pdev) != 0 ) {
2399 *eof = 1;
2400 return len;
2401 }
2402
2403 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2404 free_local_pdev(pdev);
2405 *eof = 1;
2406 return len;
2407 }
2408
2409 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2410
2411 len = sprintf(page, "Adapter inquiry failed.\n");
2412
2413 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2414
2415 mega_free_inquiry(inquiry, dma_handle, pdev);
2416
2417 free_local_pdev(pdev);
2418
2419 *eof = 1;
2420
2421 return len;
2422 }
2423
2424 if( adapter->flag & BOARD_40LD ) {
2425 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2426 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2427 }
2428 else {
2429 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2430 ((mraid_ext_inquiry *)
2431 inquiry)->raid_inq.adapter_info.rebuild_rate);
2432 }
2433
2434
2435 mega_free_inquiry(inquiry, dma_handle, pdev);
2436
2437 free_local_pdev(pdev);
2438
2439 *eof = 1;
2440
2441 return len;
2442 }
2443
2444
2445 /**
2446 * proc_battery()
2447 * @page - buffer to write the data in
2448 * @start - where the actual data has been written in page
2449 * @offset - same meaning as the read system call
2450 * @count - same meaning as the read system call
2451 * @eof - set if no more data needs to be returned
2452 * @data - pointer to our soft state
2453 *
2454 * Display information about the battery module on the controller.
2455 */
2456 static int
2457 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2458 void *data)
2459 {
2460 adapter_t *adapter = (adapter_t *)data;
2461 dma_addr_t dma_handle;
2462 caddr_t inquiry;
2463 struct pci_dev *pdev;
2464 u8 battery_status = 0;
2465 char str[256];
2466 int len = 0;
2467
2468 if( make_local_pdev(adapter, &pdev) != 0 ) {
2469 *eof = 1;
2470 return len;
2471 }
2472
2473 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2474 free_local_pdev(pdev);
2475 *eof = 1;
2476 return len;
2477 }
2478
2479 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2480
2481 len = sprintf(page, "Adapter inquiry failed.\n");
2482
2483 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2484
2485 mega_free_inquiry(inquiry, dma_handle, pdev);
2486
2487 free_local_pdev(pdev);
2488
2489 *eof = 1;
2490
2491 return len;
2492 }
2493
2494 if( adapter->flag & BOARD_40LD ) {
2495 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2496 }
2497 else {
2498 battery_status = ((mraid_ext_inquiry *)inquiry)->
2499 raid_inq.adapter_info.battery_status;
2500 }
2501
2502 /*
2503 * Decode the battery status
2504 */
2505 sprintf(str, "Battery Status:[%d]", battery_status);
2506
2507 if(battery_status == MEGA_BATT_CHARGE_DONE)
2508 strcat(str, " Charge Done");
2509
2510 if(battery_status & MEGA_BATT_MODULE_MISSING)
2511 strcat(str, " Module Missing");
2512
2513 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2514 strcat(str, " Low Voltage");
2515
2516 if(battery_status & MEGA_BATT_TEMP_HIGH)
2517 strcat(str, " Temperature High");
2518
2519 if(battery_status & MEGA_BATT_PACK_MISSING)
2520 strcat(str, " Pack Missing");
2521
2522 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2523 strcat(str, " Charge In-progress");
2524
2525 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2526 strcat(str, " Charge Fail");
2527
2528 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2529 strcat(str, " Cycles Exceeded");
2530
2531 len = sprintf(page, "%s\n", str);
2532
2533
2534 mega_free_inquiry(inquiry, dma_handle, pdev);
2535
2536 free_local_pdev(pdev);
2537
2538 *eof = 1;
2539
2540 return len;
2541 }
2542
2543
2544 /**
2545 * proc_pdrv_ch0()
2546 * @page - buffer to write the data in
2547 * @start - where the actual data has been written in page
2548 * @offset - same meaning as the read system call
2549 * @count - same meaning as the read system call
2550 * @eof - set if no more data needs to be returned
2551 * @data - pointer to our soft state
2552 *
2553 * Display information about the physical drives on physical channel 0.
2554 */
2555 static int
2556 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2557 void *data)
2558 {
2559 adapter_t *adapter = (adapter_t *)data;
2560
2561 *eof = 1;
2562
2563 return (proc_pdrv(adapter, page, 0));
2564 }
2565
2566
2567 /**
2568 * proc_pdrv_ch1()
2569 * @page - buffer to write the data in
2570 * @start - where the actual data has been written in page
2571 * @offset - same meaning as the read system call
2572 * @count - same meaning as the read system call
2573 * @eof - set if no more data needs to be returned
2574 * @data - pointer to our soft state
2575 *
2576 * Display information about the physical drives on physical channel 1.
2577 */
2578 static int
2579 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2580 void *data)
2581 {
2582 adapter_t *adapter = (adapter_t *)data;
2583
2584 *eof = 1;
2585
2586 return (proc_pdrv(adapter, page, 1));
2587 }
2588
2589
2590 /**
2591 * proc_pdrv_ch2()
2592 * @page - buffer to write the data in
2593 * @start - where the actual data has been written in page
2594 * @offset - same meaning as the read system call
2595 * @count - same meaning as the read system call
2596 * @eof - set if no more data needs to be returned
2597 * @data - pointer to our soft state
2598 *
2599 * Display information about the physical drives on physical channel 2.
2600 */
2601 static int
2602 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2603 void *data)
2604 {
2605 adapter_t *adapter = (adapter_t *)data;
2606
2607 *eof = 1;
2608
2609 return (proc_pdrv(adapter, page, 2));
2610 }
2611
2612
2613 /**
2614 * proc_pdrv_ch3()
2615 * @page - buffer to write the data in
2616 * @start - where the actual data has been written in page
2617 * @offset - same meaning as the read system call
2618 * @count - same meaning as the read system call
2619 * @eof - set if no more data needs to be returned
2620 * @data - pointer to our soft state
2621 *
2622 * Display information about the physical drives on physical channel 3.
2623 */
2624 static int
2625 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2626 void *data)
2627 {
2628 adapter_t *adapter = (adapter_t *)data;
2629
2630 *eof = 1;
2631
2632 return (proc_pdrv(adapter, page, 3));
2633 }
2634
2635
2636 /**
2637 * proc_pdrv()
2638 * @page - buffer to write the data in
2639 * @adapter - pointer to our soft state
2640 *
2641 * Display information about the physical drives.
2642 */
2643 static int
2644 proc_pdrv(adapter_t *adapter, char *page, int channel)
2645 {
2646 dma_addr_t dma_handle;
2647 char *scsi_inq;
2648 dma_addr_t scsi_inq_dma_handle;
2649 caddr_t inquiry;
2650 struct pci_dev *pdev;
2651 u8 *pdrv_state;
2652 u8 state;
2653 int tgt;
2654 int max_channels;
2655 int len = 0;
2656 char str[80];
2657 int i;
2658
2659 if( make_local_pdev(adapter, &pdev) != 0 ) {
2660 return len;
2661 }
2662
2663 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2664 goto free_pdev;
2665 }
2666
2667 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2668 len = sprintf(page, "Adapter inquiry failed.\n");
2669
2670 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2671
2672 goto free_inquiry;
2673 }
2674
2675
2676 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2677
2678 if( scsi_inq == NULL ) {
2679 len = sprintf(page, "memory not available for scsi inq.\n");
2680
2681 goto free_inquiry;
2682 }
2683
2684 if( adapter->flag & BOARD_40LD ) {
2685 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2686 }
2687 else {
2688 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2689 raid_inq.pdrv_info.pdrv_state;
2690 }
2691
2692 max_channels = adapter->product_info.nchannels;
2693
2694 if( channel >= max_channels ) {
2695 goto free_pci;
2696 }
2697
2698 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2699
2700 i = channel*16 + tgt;
2701
2702 state = *(pdrv_state + i);
2703
2704 switch( state & 0x0F ) {
2705
2706 case PDRV_ONLINE:
2707 sprintf(str,
2708 "Channel:%2d Id:%2d State: Online",
2709 channel, tgt);
2710 break;
2711
2712 case PDRV_FAILED:
2713 sprintf(str,
2714 "Channel:%2d Id:%2d State: Failed",
2715 channel, tgt);
2716 break;
2717
2718 case PDRV_RBLD:
2719 sprintf(str,
2720 "Channel:%2d Id:%2d State: Rebuild",
2721 channel, tgt);
2722 break;
2723
2724 case PDRV_HOTSPARE:
2725 sprintf(str,
2726 "Channel:%2d Id:%2d State: Hot spare",
2727 channel, tgt);
2728 break;
2729
2730 default:
2731 sprintf(str,
2732 "Channel:%2d Id:%2d State: Un-configured",
2733 channel, tgt);
2734 break;
2735
2736 }
2737
2738 /*
2739 * This interface displays inquiries for disk drives
2740 * only. Inquries for logical drives and non-disk
2741 * devices are available through /proc/scsi/scsi
2742 */
2743 memset(scsi_inq, 0, 256);
2744 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2745 scsi_inq_dma_handle) ||
2746 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2747 continue;
2748 }
2749
2750 /*
2751 * Check for overflow. We print less than 240
2752 * characters for inquiry
2753 */
2754 if( (len + 240) >= PAGE_SIZE ) break;
2755
2756 len += sprintf(page+len, "%s.\n", str);
2757
2758 len += mega_print_inquiry(page+len, scsi_inq);
2759 }
2760
2761 free_pci:
2762 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2763 free_inquiry:
2764 mega_free_inquiry(inquiry, dma_handle, pdev);
2765 free_pdev:
2766 free_local_pdev(pdev);
2767
2768 return len;
2769 }
2770
2771
2772 /*
2773 * Display scsi inquiry
2774 */
2775 static int
2776 mega_print_inquiry(char *page, char *scsi_inq)
2777 {
2778 int len = 0;
2779 int i;
2780
2781 len = sprintf(page, " Vendor: ");
2782 for( i = 8; i < 16; i++ ) {
2783 len += sprintf(page+len, "%c", scsi_inq[i]);
2784 }
2785
2786 len += sprintf(page+len, " Model: ");
2787
2788 for( i = 16; i < 32; i++ ) {
2789 len += sprintf(page+len, "%c", scsi_inq[i]);
2790 }
2791
2792 len += sprintf(page+len, " Rev: ");
2793
2794 for( i = 32; i < 36; i++ ) {
2795 len += sprintf(page+len, "%c", scsi_inq[i]);
2796 }
2797
2798 len += sprintf(page+len, "\n");
2799
2800 i = scsi_inq[0] & 0x1f;
2801
2802 len += sprintf(page+len, " Type: %s ",
2803 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2804 "Unknown ");
2805
2806 len += sprintf(page+len,
2807 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2808
2809 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2810 len += sprintf(page+len, " CCS\n");
2811 else
2812 len += sprintf(page+len, "\n");
2813
2814 return len;
2815 }
2816
2817
2818 /**
2819 * proc_rdrv_10()
2820 * @page - buffer to write the data in
2821 * @start - where the actual data has been written in page
2822 * @offset - same meaning as the read system call
2823 * @count - same meaning as the read system call
2824 * @eof - set if no more data needs to be returned
2825 * @data - pointer to our soft state
2826 *
2827 * Display real time information about the logical drives 0 through 9.
2828 */
2829 static int
2830 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2831 void *data)
2832 {
2833 adapter_t *adapter = (adapter_t *)data;
2834
2835 *eof = 1;
2836
2837 return (proc_rdrv(adapter, page, 0, 9));
2838 }
2839
2840
2841 /**
2842 * proc_rdrv_20()
2843 * @page - buffer to write the data in
2844 * @start - where the actual data has been written in page
2845 * @offset - same meaning as the read system call
2846 * @count - same meaning as the read system call
2847 * @eof - set if no more data needs to be returned
2848 * @data - pointer to our soft state
2849 *
2850 * Display real time information about the logical drives 0 through 9.
2851 */
2852 static int
2853 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2854 void *data)
2855 {
2856 adapter_t *adapter = (adapter_t *)data;
2857
2858 *eof = 1;
2859
2860 return (proc_rdrv(adapter, page, 10, 19));
2861 }
2862
2863
2864 /**
2865 * proc_rdrv_30()
2866 * @page - buffer to write the data in
2867 * @start - where the actual data has been written in page
2868 * @offset - same meaning as the read system call
2869 * @count - same meaning as the read system call
2870 * @eof - set if no more data needs to be returned
2871 * @data - pointer to our soft state
2872 *
2873 * Display real time information about the logical drives 0 through 9.
2874 */
2875 static int
2876 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2877 void *data)
2878 {
2879 adapter_t *adapter = (adapter_t *)data;
2880
2881 *eof = 1;
2882
2883 return (proc_rdrv(adapter, page, 20, 29));
2884 }
2885
2886
2887 /**
2888 * proc_rdrv_40()
2889 * @page - buffer to write the data in
2890 * @start - where the actual data has been written in page
2891 * @offset - same meaning as the read system call
2892 * @count - same meaning as the read system call
2893 * @eof - set if no more data needs to be returned
2894 * @data - pointer to our soft state
2895 *
2896 * Display real time information about the logical drives 0 through 9.
2897 */
2898 static int
2899 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2900 void *data)
2901 {
2902 adapter_t *adapter = (adapter_t *)data;
2903
2904 *eof = 1;
2905
2906 return (proc_rdrv(adapter, page, 30, 39));
2907 }
2908
2909
2910 /**
2911 * proc_rdrv()
2912 * @page - buffer to write the data in
2913 * @adapter - pointer to our soft state
2914 * @start - starting logical drive to display
2915 * @end - ending logical drive to display
2916 *
2917 * We do not print the inquiry information since its already available through
2918 * /proc/scsi/scsi interface
2919 */
2920 static int
2921 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2922 {
2923 dma_addr_t dma_handle;
2924 logdrv_param *lparam;
2925 megacmd_t mc;
2926 char *disk_array;
2927 dma_addr_t disk_array_dma_handle;
2928 caddr_t inquiry;
2929 struct pci_dev *pdev;
2930 u8 *rdrv_state;
2931 int num_ldrv;
2932 u32 array_sz;
2933 int len = 0;
2934 int i;
2935
2936 if( make_local_pdev(adapter, &pdev) != 0 ) {
2937 return len;
2938 }
2939
2940 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2941 free_local_pdev(pdev);
2942 return len;
2943 }
2944
2945 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2946
2947 len = sprintf(page, "Adapter inquiry failed.\n");
2948
2949 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2950
2951 mega_free_inquiry(inquiry, dma_handle, pdev);
2952
2953 free_local_pdev(pdev);
2954
2955 return len;
2956 }
2957
2958 memset(&mc, 0, sizeof(megacmd_t));
2959
2960 if( adapter->flag & BOARD_40LD ) {
2961 array_sz = sizeof(disk_array_40ld);
2962
2963 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2964
2965 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2966 }
2967 else {
2968 array_sz = sizeof(disk_array_8ld);
2969
2970 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2971 raid_inq.logdrv_info.ldrv_state;
2972
2973 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2974 raid_inq.logdrv_info.num_ldrv;
2975 }
2976
2977 disk_array = pci_alloc_consistent(pdev, array_sz,
2978 &disk_array_dma_handle);
2979
2980 if( disk_array == NULL ) {
2981 len = sprintf(page, "memory not available.\n");
2982
2983 mega_free_inquiry(inquiry, dma_handle, pdev);
2984
2985 free_local_pdev(pdev);
2986
2987 return len;
2988 }
2989
2990 mc.xferaddr = (u32)disk_array_dma_handle;
2991
2992 if( adapter->flag & BOARD_40LD ) {
2993 mc.cmd = FC_NEW_CONFIG;
2994 mc.opcode = OP_DCMD_READ_CONFIG;
2995
2996 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
2997
2998 len = sprintf(page, "40LD read config failed.\n");
2999
3000 mega_free_inquiry(inquiry, dma_handle, pdev);
3001
3002 pci_free_consistent(pdev, array_sz, disk_array,
3003 disk_array_dma_handle);
3004
3005 free_local_pdev(pdev);
3006
3007 return len;
3008 }
3009
3010 }
3011 else {
3012 mc.cmd = NEW_READ_CONFIG_8LD;
3013
3014 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3015
3016 mc.cmd = READ_CONFIG_8LD;
3017
3018 if( mega_internal_command(adapter, LOCK_INT, &mc,
3019 NULL) ){
3020
3021 len = sprintf(page,
3022 "8LD read config failed.\n");
3023
3024 mega_free_inquiry(inquiry, dma_handle, pdev);
3025
3026 pci_free_consistent(pdev, array_sz,
3027 disk_array,
3028 disk_array_dma_handle);
3029
3030 free_local_pdev(pdev);
3031
3032 return len;
3033 }
3034 }
3035 }
3036
3037 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3038
3039 if( adapter->flag & BOARD_40LD ) {
3040 lparam =
3041 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3042 }
3043 else {
3044 lparam =
3045 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3046 }
3047
3048 /*
3049 * Check for overflow. We print less than 240 characters for
3050 * information about each logical drive.
3051 */
3052 if( (len + 240) >= PAGE_SIZE ) break;
3053
3054 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3055
3056 switch( rdrv_state[i] & 0x0F ) {
3057 case RDRV_OFFLINE:
3058 len += sprintf(page+len, "state: offline");
3059 break;
3060
3061 case RDRV_DEGRADED:
3062 len += sprintf(page+len, "state: degraded");
3063 break;
3064
3065 case RDRV_OPTIMAL:
3066 len += sprintf(page+len, "state: optimal");
3067 break;
3068
3069 case RDRV_DELETED:
3070 len += sprintf(page+len, "state: deleted");
3071 break;
3072
3073 default:
3074 len += sprintf(page+len, "state: unknown");
3075 break;
3076 }
3077
3078 /*
3079 * Check if check consistency or initialization is going on
3080 * for this logical drive.
3081 */
3082 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3083 len += sprintf(page+len,
3084 ", check-consistency in progress");
3085 }
3086 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3087 len += sprintf(page+len,
3088 ", initialization in progress");
3089 }
3090
3091 len += sprintf(page+len, "\n");
3092
3093 len += sprintf(page+len, "Span depth:%3d, ",
3094 lparam->span_depth);
3095
3096 len += sprintf(page+len, "RAID level:%3d, ",
3097 lparam->level);
3098
3099 len += sprintf(page+len, "Stripe size:%3d, ",
3100 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3101
3102 len += sprintf(page+len, "Row size:%3d\n",
3103 lparam->row_size);
3104
3105
3106 len += sprintf(page+len, "Read Policy: ");
3107
3108 switch(lparam->read_ahead) {
3109
3110 case NO_READ_AHEAD:
3111 len += sprintf(page+len, "No read ahead, ");
3112 break;
3113
3114 case READ_AHEAD:
3115 len += sprintf(page+len, "Read ahead, ");
3116 break;
3117
3118 case ADAP_READ_AHEAD:
3119 len += sprintf(page+len, "Adaptive, ");
3120 break;
3121
3122 }
3123
3124 len += sprintf(page+len, "Write Policy: ");
3125
3126 switch(lparam->write_mode) {
3127
3128 case WRMODE_WRITE_THRU:
3129 len += sprintf(page+len, "Write thru, ");
3130 break;
3131
3132 case WRMODE_WRITE_BACK:
3133 len += sprintf(page+len, "Write back, ");
3134 break;
3135 }
3136
3137 len += sprintf(page+len, "Cache Policy: ");
3138
3139 switch(lparam->direct_io) {
3140
3141 case CACHED_IO:
3142 len += sprintf(page+len, "Cached IO\n\n");
3143 break;
3144
3145 case DIRECT_IO:
3146 len += sprintf(page+len, "Direct IO\n\n");
3147 break;
3148 }
3149 }
3150
3151 mega_free_inquiry(inquiry, dma_handle, pdev);
3152
3153 pci_free_consistent(pdev, array_sz, disk_array,
3154 disk_array_dma_handle);
3155
3156 free_local_pdev(pdev);
3157
3158 return len;
3159 }
3160
3161 #endif
3162
3163
3164 /**
3165 * megaraid_biosparam()
3166 *
3167 * Return the disk geometry for a particular disk
3168 */
3169 static int
3170 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3171 sector_t capacity, int geom[])
3172 {
3173 adapter_t *adapter;
3174 unsigned char *bh;
3175 int heads;
3176 int sectors;
3177 int cylinders;
3178 int rval;
3179
3180 /* Get pointer to host config structure */
3181 adapter = (adapter_t *)sdev->host->hostdata;
3182
3183 if (IS_RAID_CH(adapter, sdev->channel)) {
3184 /* Default heads (64) & sectors (32) */
3185 heads = 64;
3186 sectors = 32;
3187 cylinders = (ulong)capacity / (heads * sectors);
3188
3189 /*
3190 * Handle extended translation size for logical drives
3191 * > 1Gb
3192 */
3193 if ((ulong)capacity >= 0x200000) {
3194 heads = 255;
3195 sectors = 63;
3196 cylinders = (ulong)capacity / (heads * sectors);
3197 }
3198
3199 /* return result */
3200 geom[0] = heads;
3201 geom[1] = sectors;
3202 geom[2] = cylinders;
3203 }
3204 else {
3205 bh = scsi_bios_ptable(bdev);
3206
3207 if( bh ) {
3208 rval = scsi_partsize(bh, capacity,
3209 &geom[2], &geom[0], &geom[1]);
3210 kfree(bh);
3211 if( rval != -1 )
3212 return rval;
3213 }
3214
3215 printk(KERN_INFO
3216 "megaraid: invalid partition on this disk on channel %d\n",
3217 sdev->channel);
3218
3219 /* Default heads (64) & sectors (32) */
3220 heads = 64;
3221 sectors = 32;
3222 cylinders = (ulong)capacity / (heads * sectors);
3223
3224 /* Handle extended translation size for logical drives > 1Gb */
3225 if ((ulong)capacity >= 0x200000) {
3226 heads = 255;
3227 sectors = 63;
3228 cylinders = (ulong)capacity / (heads * sectors);
3229 }
3230
3231 /* return result */
3232 geom[0] = heads;
3233 geom[1] = sectors;
3234 geom[2] = cylinders;
3235 }
3236
3237 return 0;
3238 }
3239
3240 /**
3241 * mega_init_scb()
3242 * @adapter - pointer to our soft state
3243 *
3244 * Allocate memory for the various pointers in the scb structures:
3245 * scatter-gather list pointer, passthru and extended passthru structure
3246 * pointers.
3247 */
3248 static int
3249 mega_init_scb(adapter_t *adapter)
3250 {
3251 scb_t *scb;
3252 int i;
3253
3254 for( i = 0; i < adapter->max_cmds; i++ ) {
3255
3256 scb = &adapter->scb_list[i];
3257
3258 scb->sgl64 = NULL;
3259 scb->sgl = NULL;
3260 scb->pthru = NULL;
3261 scb->epthru = NULL;
3262 }
3263
3264 for( i = 0; i < adapter->max_cmds; i++ ) {
3265
3266 scb = &adapter->scb_list[i];
3267
3268 scb->idx = i;
3269
3270 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3271 sizeof(mega_sgl64) * adapter->sglen,
3272 &scb->sgl_dma_addr);
3273
3274 scb->sgl = (mega_sglist *)scb->sgl64;
3275
3276 if( !scb->sgl ) {
3277 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3278 mega_free_sgl(adapter);
3279 return -1;
3280 }
3281
3282 scb->pthru = pci_alloc_consistent(adapter->dev,
3283 sizeof(mega_passthru),
3284 &scb->pthru_dma_addr);
3285
3286 if( !scb->pthru ) {
3287 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3288 mega_free_sgl(adapter);
3289 return -1;
3290 }
3291
3292 scb->epthru = pci_alloc_consistent(adapter->dev,
3293 sizeof(mega_ext_passthru),
3294 &scb->epthru_dma_addr);
3295
3296 if( !scb->epthru ) {
3297 printk(KERN_WARNING
3298 "Can't allocate extended passthru.\n");
3299 mega_free_sgl(adapter);
3300 return -1;
3301 }
3302
3303
3304 scb->dma_type = MEGA_DMA_TYPE_NONE;
3305
3306 /*
3307 * Link to free list
3308 * lock not required since we are loading the driver, so no
3309 * commands possible right now.
3310 */
3311 scb->state = SCB_FREE;
3312 scb->cmd = NULL;
3313 list_add(&scb->list, &adapter->free_list);
3314 }
3315
3316 return 0;
3317 }
3318
3319
3320 /**
3321 * megadev_open()
3322 * @inode - unused
3323 * @filep - unused
3324 *
3325 * Routines for the character/ioctl interface to the driver. Find out if this
3326 * is a valid open. If yes, increment the module use count so that it cannot
3327 * be unloaded.
3328 */
3329 static int
3330 megadev_open (struct inode *inode, struct file *filep)
3331 {
3332 /*
3333 * Only allow superuser to access private ioctl interface
3334 */
3335 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3336
3337 return 0;
3338 }
3339
3340
3341 /**
3342 * megadev_ioctl()
3343 * @inode - Our device inode
3344 * @filep - unused
3345 * @cmd - ioctl command
3346 * @arg - user buffer
3347 *
3348 * ioctl entry point for our private ioctl interface. We move the data in from
3349 * the user space, prepare the command (if necessary, convert the old MIMD
3350 * ioctl to new ioctl command), and issue a synchronous command to the
3351 * controller.
3352 */
3353 static int
3354 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3355 unsigned long arg)
3356 {
3357 adapter_t *adapter;
3358 nitioctl_t uioc;
3359 int adapno;
3360 int rval;
3361 mega_passthru __user *upthru; /* user address for passthru */
3362 mega_passthru *pthru; /* copy user passthru here */
3363 dma_addr_t pthru_dma_hndl;
3364 void *data = NULL; /* data to be transferred */
3365 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3366 megacmd_t mc;
3367 megastat_t __user *ustats;
3368 int num_ldrv;
3369 u32 uxferaddr = 0;
3370 struct pci_dev *pdev;
3371
3372 ustats = NULL; /* avoid compilation warnings */
3373 num_ldrv = 0;
3374
3375 /*
3376 * Make sure only USCSICMD are issued through this interface.
3377 * MIMD application would still fire different command.
3378 */
3379 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3380 return -EINVAL;
3381 }
3382
3383 /*
3384 * Check and convert a possible MIMD command to NIT command.
3385 * mega_m_to_n() copies the data from the user space, so we do not
3386 * have to do it here.
3387 * NOTE: We will need some user address to copyout the data, therefore
3388 * the inteface layer will also provide us with the required user
3389 * addresses.
3390 */
3391 memset(&uioc, 0, sizeof(nitioctl_t));
3392 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3393 return rval;
3394
3395
3396 switch( uioc.opcode ) {
3397
3398 case GET_DRIVER_VER:
3399 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3400 return (-EFAULT);
3401
3402 break;
3403
3404 case GET_N_ADAP:
3405 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3406 return (-EFAULT);
3407
3408 /*
3409 * Shucks. MIMD interface returns a positive value for number
3410 * of adapters. TODO: Change it to return 0 when there is no
3411 * applicatio using mimd interface.
3412 */
3413 return hba_count;
3414
3415 case GET_ADAP_INFO:
3416
3417 /*
3418 * Which adapter
3419 */
3420 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3421 return (-ENODEV);
3422
3423 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3424 sizeof(struct mcontroller)) )
3425 return (-EFAULT);
3426 break;
3427
3428 #if MEGA_HAVE_STATS
3429
3430 case GET_STATS:
3431 /*
3432 * Which adapter
3433 */
3434 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3435 return (-ENODEV);
3436
3437 adapter = hba_soft_state[adapno];
3438
3439 ustats = uioc.uioc_uaddr;
3440
3441 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3442 return (-EFAULT);
3443
3444 /*
3445 * Check for the validity of the logical drive number
3446 */
3447 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3448
3449 if( copy_to_user(ustats->nreads, adapter->nreads,
3450 num_ldrv*sizeof(u32)) )
3451 return -EFAULT;
3452
3453 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3454 num_ldrv*sizeof(u32)) )
3455 return -EFAULT;
3456
3457 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3458 num_ldrv*sizeof(u32)) )
3459 return -EFAULT;
3460
3461 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3462 num_ldrv*sizeof(u32)) )
3463 return -EFAULT;
3464
3465 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3466 num_ldrv*sizeof(u32)) )
3467 return -EFAULT;
3468
3469 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3470 num_ldrv*sizeof(u32)) )
3471 return -EFAULT;
3472
3473 return 0;
3474
3475 #endif
3476 case MBOX_CMD:
3477
3478 /*
3479 * Which adapter
3480 */
3481 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3482 return (-ENODEV);
3483
3484 adapter = hba_soft_state[adapno];
3485
3486 /*
3487 * Deletion of logical drive is a special case. The adapter
3488 * should be quiescent before this command is issued.
3489 */
3490 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3491 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3492
3493 /*
3494 * Do we support this feature
3495 */
3496 if( !adapter->support_random_del ) {
3497 printk(KERN_WARNING "megaraid: logdrv ");
3498 printk("delete on non-supporting F/W.\n");
3499
3500 return (-EINVAL);
3501 }
3502
3503 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3504
3505 if( rval == 0 ) {
3506 memset(&mc, 0, sizeof(megacmd_t));
3507
3508 mc.status = rval;
3509
3510 rval = mega_n_to_m((void __user *)arg, &mc);
3511 }
3512
3513 return rval;
3514 }
3515 /*
3516 * This interface only support the regular passthru commands.
3517 * Reject extended passthru and 64-bit passthru
3518 */
3519 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3520 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3521
3522 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3523
3524 return (-EINVAL);
3525 }
3526
3527 /*
3528 * For all internal commands, the buffer must be allocated in
3529 * <4GB address range
3530 */
3531 if( make_local_pdev(adapter, &pdev) != 0 )
3532 return -EIO;
3533
3534 /* Is it a passthru command or a DCMD */
3535 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3536 /* Passthru commands */
3537
3538 pthru = pci_alloc_consistent(pdev,
3539 sizeof(mega_passthru),
3540 &pthru_dma_hndl);
3541
3542 if( pthru == NULL ) {
3543 free_local_pdev(pdev);
3544 return (-ENOMEM);
3545 }
3546
3547 /*
3548 * The user passthru structure
3549 */
3550 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3551
3552 /*
3553 * Copy in the user passthru here.
3554 */
3555 if( copy_from_user(pthru, upthru,
3556 sizeof(mega_passthru)) ) {
3557
3558 pci_free_consistent(pdev,
3559 sizeof(mega_passthru), pthru,
3560 pthru_dma_hndl);
3561
3562 free_local_pdev(pdev);
3563
3564 return (-EFAULT);
3565 }
3566
3567 /*
3568 * Is there a data transfer
3569 */
3570 if( pthru->dataxferlen ) {
3571 data = pci_alloc_consistent(pdev,
3572 pthru->dataxferlen,
3573 &data_dma_hndl);
3574
3575 if( data == NULL ) {
3576 pci_free_consistent(pdev,
3577 sizeof(mega_passthru),
3578 pthru,
3579 pthru_dma_hndl);
3580
3581 free_local_pdev(pdev);
3582
3583 return (-ENOMEM);
3584 }
3585
3586 /*
3587 * Save the user address and point the kernel
3588 * address at just allocated memory
3589 */
3590 uxferaddr = pthru->dataxferaddr;
3591 pthru->dataxferaddr = data_dma_hndl;
3592 }
3593
3594
3595 /*
3596 * Is data coming down-stream
3597 */
3598 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3599 /*
3600 * Get the user data
3601 */
3602 if( copy_from_user(data, (char __user *)uxferaddr,
3603 pthru->dataxferlen) ) {
3604 rval = (-EFAULT);
3605 goto freemem_and_return;
3606 }
3607 }
3608
3609 memset(&mc, 0, sizeof(megacmd_t));
3610
3611 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3612 mc.xferaddr = (u32)pthru_dma_hndl;
3613
3614 /*
3615 * Issue the command
3616 */
3617 mega_internal_command(adapter, LOCK_INT, &mc, pthru);
3618
3619 rval = mega_n_to_m((void __user *)arg, &mc);
3620
3621 if( rval ) goto freemem_and_return;
3622
3623
3624 /*
3625 * Is data going up-stream
3626 */
3627 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3628 if( copy_to_user((char __user *)uxferaddr, data,
3629 pthru->dataxferlen) ) {
3630 rval = (-EFAULT);
3631 }
3632 }
3633
3634 /*
3635 * Send the request sense data also, irrespective of
3636 * whether the user has asked for it or not.
3637 */
3638 copy_to_user(upthru->reqsensearea,
3639 pthru->reqsensearea, 14);
3640
3641 freemem_and_return:
3642 if( pthru->dataxferlen ) {
3643 pci_free_consistent(pdev,
3644 pthru->dataxferlen, data,
3645 data_dma_hndl);
3646 }
3647
3648 pci_free_consistent(pdev, sizeof(mega_passthru),
3649 pthru, pthru_dma_hndl);
3650
3651 free_local_pdev(pdev);
3652
3653 return rval;
3654 }
3655 else {
3656 /* DCMD commands */
3657
3658 /*
3659 * Is there a data transfer
3660 */
3661 if( uioc.xferlen ) {
3662 data = pci_alloc_consistent(pdev,
3663 uioc.xferlen, &data_dma_hndl);
3664
3665 if( data == NULL ) {
3666 free_local_pdev(pdev);
3667 return (-ENOMEM);
3668 }
3669
3670 uxferaddr = MBOX(uioc)->xferaddr;
3671 }
3672
3673 /*
3674 * Is data coming down-stream
3675 */
3676 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3677 /*
3678 * Get the user data
3679 */
3680 if( copy_from_user(data, (char __user *)uxferaddr,
3681 uioc.xferlen) ) {
3682
3683 pci_free_consistent(pdev,
3684 uioc.xferlen,
3685 data, data_dma_hndl);
3686
3687 free_local_pdev(pdev);
3688
3689 return (-EFAULT);
3690 }
3691 }
3692
3693 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3694
3695 mc.xferaddr = (u32)data_dma_hndl;
3696
3697 /*
3698 * Issue the command
3699 */
3700 mega_internal_command(adapter, LOCK_INT, &mc, NULL);
3701
3702 rval = mega_n_to_m((void __user *)arg, &mc);
3703
3704 if( rval ) {
3705 if( uioc.xferlen ) {
3706 pci_free_consistent(pdev,
3707 uioc.xferlen, data,
3708 data_dma_hndl);
3709 }
3710
3711 free_local_pdev(pdev);
3712
3713 return rval;
3714 }
3715
3716 /*
3717 * Is data going up-stream
3718 */
3719 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3720 if( copy_to_user((char __user *)uxferaddr, data,
3721 uioc.xferlen) ) {
3722
3723 rval = (-EFAULT);
3724 }
3725 }
3726
3727 if( uioc.xferlen ) {
3728 pci_free_consistent(pdev,
3729 uioc.xferlen, data,
3730 data_dma_hndl);
3731 }
3732
3733 free_local_pdev(pdev);
3734
3735 return rval;
3736 }
3737
3738 default:
3739 return (-EINVAL);
3740 }
3741
3742 return 0;
3743 }
3744
3745 /**
3746 * mega_m_to_n()
3747 * @arg - user address
3748 * @uioc - new ioctl structure
3749 *
3750 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3751 * structure
3752 *
3753 * Converts the older mimd ioctl structure to newer NIT structure
3754 */
3755 static int
3756 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3757 {
3758 struct uioctl_t uioc_mimd;
3759 char signature[8] = {0};
3760 u8 opcode;
3761 u8 subopcode;
3762
3763
3764 /*
3765 * check is the application conforms to NIT. We do not have to do much
3766 * in that case.
3767 * We exploit the fact that the signature is stored in the very
3768 * begining of the structure.
3769 */
3770
3771 if( copy_from_user(signature, arg, 7) )
3772 return (-EFAULT);
3773
3774 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3775
3776 /*
3777 * NOTE NOTE: The nit ioctl is still under flux because of
3778 * change of mailbox definition, in HPE. No applications yet
3779 * use this interface and let's not have applications use this
3780 * interface till the new specifitions are in place.
3781 */
3782 return -EINVAL;
3783 #if 0
3784 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3785 return (-EFAULT);
3786 return 0;
3787 #endif
3788 }
3789
3790 /*
3791 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3792 *
3793 * Get the user ioctl structure
3794 */
3795 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3796 return (-EFAULT);
3797
3798
3799 /*
3800 * Get the opcode and subopcode for the commands
3801 */
3802 opcode = uioc_mimd.ui.fcs.opcode;
3803 subopcode = uioc_mimd.ui.fcs.subopcode;
3804
3805 switch (opcode) {
3806 case 0x82:
3807
3808 switch (subopcode) {
3809
3810 case MEGAIOC_QDRVRVER: /* Query driver version */
3811 uioc->opcode = GET_DRIVER_VER;
3812 uioc->uioc_uaddr = uioc_mimd.data;
3813 break;
3814
3815 case MEGAIOC_QNADAP: /* Get # of adapters */
3816 uioc->opcode = GET_N_ADAP;
3817 uioc->uioc_uaddr = uioc_mimd.data;
3818 break;
3819
3820 case MEGAIOC_QADAPINFO: /* Get adapter information */
3821 uioc->opcode = GET_ADAP_INFO;
3822 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3823 uioc->uioc_uaddr = uioc_mimd.data;
3824 break;
3825
3826 default:
3827 return(-EINVAL);
3828 }
3829
3830 break;
3831
3832
3833 case 0x81:
3834
3835 uioc->opcode = MBOX_CMD;
3836 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3837
3838 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3839
3840 uioc->xferlen = uioc_mimd.ui.fcs.length;
3841
3842 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3843 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3844
3845 break;
3846
3847 case 0x80:
3848
3849 uioc->opcode = MBOX_CMD;
3850 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3851
3852 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3853
3854 /*
3855 * Choose the xferlen bigger of input and output data
3856 */
3857 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3858 uioc_mimd.outlen : uioc_mimd.inlen;
3859
3860 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3861 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3862
3863 break;
3864
3865 default:
3866 return (-EINVAL);
3867
3868 }
3869
3870 return 0;
3871 }
3872
3873 /*
3874 * mega_n_to_m()
3875 * @arg - user address
3876 * @mc - mailbox command
3877 *
3878 * Updates the status information to the application, depending on application
3879 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3880 */
3881 static int
3882 mega_n_to_m(void __user *arg, megacmd_t *mc)
3883 {
3884 nitioctl_t __user *uiocp;
3885 megacmd_t __user *umc;
3886 mega_passthru __user *upthru;
3887 struct uioctl_t __user *uioc_mimd;
3888 char signature[8] = {0};
3889
3890 /*
3891 * check is the application conforms to NIT.
3892 */
3893 if( copy_from_user(signature, arg, 7) )
3894 return -EFAULT;
3895
3896 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3897
3898 uiocp = arg;
3899
3900 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3901 return (-EFAULT);
3902
3903 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3904
3905 umc = MBOX_P(uiocp);
3906
3907 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3908 return -EFAULT;
3909
3910 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3911 return (-EFAULT);
3912 }
3913 }
3914 else {
3915 uioc_mimd = arg;
3916
3917 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3918 return (-EFAULT);
3919
3920 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3921
3922 umc = (megacmd_t __user *)uioc_mimd->mbox;
3923
3924 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3925 return (-EFAULT);
3926
3927 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3928 return (-EFAULT);
3929 }
3930 }
3931
3932 return 0;
3933 }
3934
3935
3936 /*
3937 * MEGARAID 'FW' commands.
3938 */
3939
3940 /**
3941 * mega_is_bios_enabled()
3942 * @adapter - pointer to our soft state
3943 *
3944 * issue command to find out if the BIOS is enabled for this controller
3945 */
3946 static int
3947 mega_is_bios_enabled(adapter_t *adapter)
3948 {
3949 unsigned char raw_mbox[sizeof(struct mbox_out)];
3950 mbox_t *mbox;
3951 int ret;
3952
3953 mbox = (mbox_t *)raw_mbox;
3954
3955 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3956
3957 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3958
3959 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3960
3961 raw_mbox[0] = IS_BIOS_ENABLED;
3962 raw_mbox[2] = GET_BIOS;
3963
3964
3965 ret = issue_scb_block(adapter, raw_mbox);
3966
3967 return *(char *)adapter->mega_buffer;
3968 }
3969
3970
3971 /**
3972 * mega_enum_raid_scsi()
3973 * @adapter - pointer to our soft state
3974 *
3975 * Find out what channels are RAID/SCSI. This information is used to
3976 * differentiate the virtual channels and physical channels and to support
3977 * ROMB feature and non-disk devices.
3978 */
3979 static void
3980 mega_enum_raid_scsi(adapter_t *adapter)
3981 {
3982 unsigned char raw_mbox[sizeof(struct mbox_out)];
3983 mbox_t *mbox;
3984 int i;
3985
3986 mbox = (mbox_t *)raw_mbox;
3987
3988 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3989
3990 /*
3991 * issue command to find out what channels are raid/scsi
3992 */
3993 raw_mbox[0] = CHNL_CLASS;
3994 raw_mbox[2] = GET_CHNL_CLASS;
3995
3996 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3997
3998 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3999
4000 /*
4001 * Non-ROMB firmware fail this command, so all channels
4002 * must be shown RAID
4003 */
4004 adapter->mega_ch_class = 0xFF;
4005
4006 if(!issue_scb_block(adapter, raw_mbox)) {
4007 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4008
4009 }
4010
4011 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4012 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4013 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4014 i);
4015 }
4016 else {
4017 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4018 i);
4019 }
4020 }
4021
4022 return;
4023 }
4024
4025
4026 /**
4027 * mega_get_boot_drv()
4028 * @adapter - pointer to our soft state
4029 *
4030 * Find out which device is the boot device. Note, any logical drive or any
4031 * phyical device (e.g., a CDROM) can be designated as a boot device.
4032 */
4033 static void
4034 mega_get_boot_drv(adapter_t *adapter)
4035 {
4036 struct private_bios_data *prv_bios_data;
4037 unsigned char raw_mbox[sizeof(struct mbox_out)];
4038 mbox_t *mbox;
4039 u16 cksum = 0;
4040 u8 *cksum_p;
4041 u8 boot_pdrv;
4042 int i;
4043
4044 mbox = (mbox_t *)raw_mbox;
4045
4046 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4047
4048 raw_mbox[0] = BIOS_PVT_DATA;
4049 raw_mbox[2] = GET_BIOS_PVT_DATA;
4050
4051 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4052
4053 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4054
4055 adapter->boot_ldrv_enabled = 0;
4056 adapter->boot_ldrv = 0;
4057
4058 adapter->boot_pdrv_enabled = 0;
4059 adapter->boot_pdrv_ch = 0;
4060 adapter->boot_pdrv_tgt = 0;
4061
4062 if(issue_scb_block(adapter, raw_mbox) == 0) {
4063 prv_bios_data =
4064 (struct private_bios_data *)adapter->mega_buffer;
4065
4066 cksum = 0;
4067 cksum_p = (char *)prv_bios_data;
4068 for (i = 0; i < 14; i++ ) {
4069 cksum += (u16)(*cksum_p++);
4070 }
4071
4072 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4073
4074 /*
4075 * If MSB is set, a physical drive is set as boot
4076 * device
4077 */
4078 if( prv_bios_data->boot_drv & 0x80 ) {
4079 adapter->boot_pdrv_enabled = 1;
4080 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4081 adapter->boot_pdrv_ch = boot_pdrv / 16;
4082 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4083 }
4084 else {
4085 adapter->boot_ldrv_enabled = 1;
4086 adapter->boot_ldrv = prv_bios_data->boot_drv;
4087 }
4088 }
4089 }
4090
4091 }
4092
4093 /**
4094 * mega_support_random_del()
4095 * @adapter - pointer to our soft state
4096 *
4097 * Find out if this controller supports random deletion and addition of
4098 * logical drives
4099 */
4100 static int
4101 mega_support_random_del(adapter_t *adapter)
4102 {
4103 unsigned char raw_mbox[sizeof(struct mbox_out)];
4104 mbox_t *mbox;
4105 int rval;
4106
4107 mbox = (mbox_t *)raw_mbox;
4108
4109 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4110
4111 /*
4112 * issue command
4113 */
4114 raw_mbox[0] = FC_DEL_LOGDRV;
4115 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4116
4117 rval = issue_scb_block(adapter, raw_mbox);
4118
4119 return !rval;
4120 }
4121
4122
4123 /**
4124 * mega_support_ext_cdb()
4125 * @adapter - pointer to our soft state
4126 *
4127 * Find out if this firmware support cdblen > 10
4128 */
4129 static int
4130 mega_support_ext_cdb(adapter_t *adapter)
4131 {
4132 unsigned char raw_mbox[sizeof(struct mbox_out)];
4133 mbox_t *mbox;
4134 int rval;
4135
4136 mbox = (mbox_t *)raw_mbox;
4137
4138 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4139 /*
4140 * issue command to find out if controller supports extended CDBs.
4141 */
4142 raw_mbox[0] = 0xA4;
4143 raw_mbox[2] = 0x16;
4144
4145 rval = issue_scb_block(adapter, raw_mbox);
4146
4147 return !rval;
4148 }
4149
4150
4151 /**
4152 * mega_del_logdrv()
4153 * @adapter - pointer to our soft state
4154 * @logdrv - logical drive to be deleted
4155 *
4156 * Delete the specified logical drive. It is the responsibility of the user
4157 * app to let the OS know about this operation.
4158 */
4159 static int
4160 mega_del_logdrv(adapter_t *adapter, int logdrv)
4161 {
4162 unsigned long flags;
4163 scb_t *scb;
4164 int rval;
4165
4166 /*
4167 * Stop sending commands to the controller, queue them internally.
4168 * When deletion is complete, ISR will flush the queue.
4169 */
4170 atomic_set(&adapter->quiescent, 1);
4171
4172 /*
4173 * Wait till all the issued commands are complete and there are no
4174 * commands in the pending queue
4175 */
4176 while (atomic_read(&adapter->pend_cmds) > 0 ||
4177 !list_empty(&adapter->pending_list))
4178 msleep(1000); /* sleep for 1s */
4179
4180 rval = mega_do_del_logdrv(adapter, logdrv);
4181
4182 spin_lock_irqsave(&adapter->lock, flags);
4183
4184 /*
4185 * If delete operation was successful, add 0x80 to the logical drive
4186 * ids for commands in the pending queue.
4187 */
4188 if (adapter->read_ldidmap) {
4189 struct list_head *pos;
4190 list_for_each(pos, &adapter->pending_list) {
4191 scb = list_entry(pos, scb_t, list);
4192 if (scb->pthru->logdrv < 0x80 )
4193 scb->pthru->logdrv += 0x80;
4194 }
4195 }
4196
4197 atomic_set(&adapter->quiescent, 0);
4198
4199 mega_runpendq(adapter);
4200
4201 spin_unlock_irqrestore(&adapter->lock, flags);
4202
4203 return rval;
4204 }
4205
4206
4207 static int
4208 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4209 {
4210 megacmd_t mc;
4211 int rval;
4212
4213 memset( &mc, 0, sizeof(megacmd_t));
4214
4215 mc.cmd = FC_DEL_LOGDRV;
4216 mc.opcode = OP_DEL_LOGDRV;
4217 mc.subopcode = logdrv;
4218
4219 rval = mega_internal_command(adapter, LOCK_INT, &mc, NULL);
4220
4221 /* log this event */
4222 if(rval) {
4223 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4224 return rval;
4225 }
4226
4227 /*
4228 * After deleting first logical drive, the logical drives must be
4229 * addressed by adding 0x80 to the logical drive id.
4230 */
4231 adapter->read_ldidmap = 1;
4232
4233 return rval;
4234 }
4235
4236
4237 /**
4238 * mega_get_max_sgl()
4239 * @adapter - pointer to our soft state
4240 *
4241 * Find out the maximum number of scatter-gather elements supported by this
4242 * version of the firmware
4243 */
4244 static void
4245 mega_get_max_sgl(adapter_t *adapter)
4246 {
4247 unsigned char raw_mbox[sizeof(struct mbox_out)];
4248 mbox_t *mbox;
4249
4250 mbox = (mbox_t *)raw_mbox;
4251
4252 memset(mbox, 0, sizeof(raw_mbox));
4253
4254 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4255
4256 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4257
4258 raw_mbox[0] = MAIN_MISC_OPCODE;
4259 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4260
4261
4262 if( issue_scb_block(adapter, raw_mbox) ) {
4263 /*
4264 * f/w does not support this command. Choose the default value
4265 */
4266 adapter->sglen = MIN_SGLIST;
4267 }
4268 else {
4269 adapter->sglen = *((char *)adapter->mega_buffer);
4270
4271 /*
4272 * Make sure this is not more than the resources we are
4273 * planning to allocate
4274 */
4275 if ( adapter->sglen > MAX_SGLIST )
4276 adapter->sglen = MAX_SGLIST;
4277 }
4278
4279 return;
4280 }
4281
4282
4283 /**
4284 * mega_support_cluster()
4285 * @adapter - pointer to our soft state
4286 *
4287 * Find out if this firmware support cluster calls.
4288 */
4289 static int
4290 mega_support_cluster(adapter_t *adapter)
4291 {
4292 unsigned char raw_mbox[sizeof(struct mbox_out)];
4293 mbox_t *mbox;
4294
4295 mbox = (mbox_t *)raw_mbox;
4296
4297 memset(mbox, 0, sizeof(raw_mbox));
4298
4299 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4300
4301 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4302
4303 /*
4304 * Try to get the initiator id. This command will succeed iff the
4305 * clustering is available on this HBA.
4306 */
4307 raw_mbox[0] = MEGA_GET_TARGET_ID;
4308
4309 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4310
4311 /*
4312 * Cluster support available. Get the initiator target id.
4313 * Tell our id to mid-layer too.
4314 */
4315 adapter->this_id = *(u32 *)adapter->mega_buffer;
4316 adapter->host->this_id = adapter->this_id;
4317
4318 return 1;
4319 }
4320
4321 return 0;
4322 }
4323
4324
4325 /**
4326 * mega_adapinq()
4327 * @adapter - pointer to our soft state
4328 * @dma_handle - DMA address of the buffer
4329 *
4330 * Issue internal comamnds while interrupts are available.
4331 * We only issue direct mailbox commands from within the driver. ioctl()
4332 * interface using these routines can issue passthru commands.
4333 */
4334 static int
4335 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4336 {
4337 megacmd_t mc;
4338
4339 memset(&mc, 0, sizeof(megacmd_t));
4340
4341 if( adapter->flag & BOARD_40LD ) {
4342 mc.cmd = FC_NEW_CONFIG;
4343 mc.opcode = NC_SUBOP_ENQUIRY3;
4344 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4345 }
4346 else {
4347 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4348 }
4349
4350 mc.xferaddr = (u32)dma_handle;
4351
4352 if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
4353 return -1;
4354 }
4355
4356 return 0;
4357 }
4358
4359
4360 /** mega_internal_dev_inquiry()
4361 * @adapter - pointer to our soft state
4362 * @ch - channel for this device
4363 * @tgt - ID of this device
4364 * @buf_dma_handle - DMA address of the buffer
4365 *
4366 * Issue the scsi inquiry for the specified device.
4367 */
4368 static int
4369 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4370 dma_addr_t buf_dma_handle)
4371 {
4372 mega_passthru *pthru;
4373 dma_addr_t pthru_dma_handle;
4374 megacmd_t mc;
4375 int rval;
4376 struct pci_dev *pdev;
4377
4378
4379 /*
4380 * For all internal commands, the buffer must be allocated in <4GB
4381 * address range
4382 */
4383 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4384
4385 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4386 &pthru_dma_handle);
4387
4388 if( pthru == NULL ) {
4389 free_local_pdev(pdev);
4390 return -1;
4391 }
4392
4393 pthru->timeout = 2;
4394 pthru->ars = 1;
4395 pthru->reqsenselen = 14;
4396 pthru->islogical = 0;
4397
4398 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4399
4400 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4401
4402 pthru->cdblen = 6;
4403
4404 pthru->cdb[0] = INQUIRY;
4405 pthru->cdb[1] = 0;
4406 pthru->cdb[2] = 0;
4407 pthru->cdb[3] = 0;
4408 pthru->cdb[4] = 255;
4409 pthru->cdb[5] = 0;
4410
4411
4412 pthru->dataxferaddr = (u32)buf_dma_handle;
4413 pthru->dataxferlen = 256;
4414
4415 memset(&mc, 0, sizeof(megacmd_t));
4416
4417 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4418 mc.xferaddr = (u32)pthru_dma_handle;
4419
4420 rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru);
4421
4422 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4423 pthru_dma_handle);
4424
4425 free_local_pdev(pdev);
4426
4427 return rval;
4428 }
4429
4430
4431 /**
4432 * mega_internal_command()
4433 * @adapter - pointer to our soft state
4434 * @ls - the scope of the exclusion lock.
4435 * @mc - the mailbox command
4436 * @pthru - Passthru structure for DCDB commands
4437 *
4438 * Issue the internal commands in interrupt mode.
4439 * The last argument is the address of the passthru structure if the command
4440 * to be fired is a passthru command
4441 *
4442 * lockscope specifies whether the caller has already acquired the lock. Of
4443 * course, the caller must know which lock we are talking about.
4444 *
4445 * Note: parameter 'pthru' is null for non-passthru commands.
4446 */
4447 static int
4448 mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc,
4449 mega_passthru *pthru )
4450 {
4451 Scsi_Cmnd *scmd;
4452 struct scsi_device *sdev;
4453 unsigned long flags = 0;
4454 scb_t *scb;
4455 int rval;
4456
4457 /*
4458 * The internal commands share one command id and hence are
4459 * serialized. This is so because we want to reserve maximum number of
4460 * available command ids for the I/O commands.
4461 */
4462 down(&adapter->int_mtx);
4463
4464 scb = &adapter->int_scb;
4465 memset(scb, 0, sizeof(scb_t));
4466
4467 scmd = &adapter->int_scmd;
4468 memset(scmd, 0, sizeof(Scsi_Cmnd));
4469
4470 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4471 memset(sdev, 0, sizeof(struct scsi_device));
4472 scmd->device = sdev;
4473
4474 scmd->device->host = adapter->host;
4475 scmd->buffer = (void *)scb;
4476 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4477
4478 scb->state |= SCB_ACTIVE;
4479 scb->cmd = scmd;
4480
4481 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4482
4483 /*
4484 * Is it a passthru command
4485 */
4486 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4487
4488 scb->pthru = pthru;
4489 }
4490
4491 scb->idx = CMDID_INT_CMDS;
4492
4493 scmd->state = 0;
4494
4495 /*
4496 * Get the lock only if the caller has not acquired it already
4497 */
4498 if( ls == LOCK_INT ) spin_lock_irqsave(&adapter->lock, flags);
4499
4500 megaraid_queue(scmd, mega_internal_done);
4501
4502 if( ls == LOCK_INT ) spin_unlock_irqrestore(&adapter->lock, flags);
4503
4504 /*
4505 * Wait till this command finishes. Do not use
4506 * wait_event_interruptible(). It causes panic if CTRL-C is hit when
4507 * dumping e.g., physical disk information through /proc interface.
4508 */
4509 #if 0
4510 wait_event_interruptible(adapter->int_waitq, scmd->state);
4511 #endif
4512 wait_event(adapter->int_waitq, scmd->state);
4513
4514 rval = scmd->result;
4515 mc->status = scmd->result;
4516 kfree(sdev);
4517
4518 /*
4519 * Print a debug message for all failed commands. Applications can use
4520 * this information.
4521 */
4522 if( scmd->result && trace_level ) {
4523 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4524 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4525 }
4526
4527 up(&adapter->int_mtx);
4528
4529 return rval;
4530 }
4531
4532
4533 /**
4534 * mega_internal_done()
4535 * @scmd - internal scsi command
4536 *
4537 * Callback routine for internal commands.
4538 */
4539 static void
4540 mega_internal_done(Scsi_Cmnd *scmd)
4541 {
4542 adapter_t *adapter;
4543
4544 adapter = (adapter_t *)scmd->device->host->hostdata;
4545
4546 scmd->state = 1; /* thread waiting for its command to complete */
4547
4548 /*
4549 * See comment in mega_internal_command() routine for
4550 * wait_event_interruptible()
4551 */
4552 #if 0
4553 wake_up_interruptible(&adapter->int_waitq);
4554 #endif
4555 wake_up(&adapter->int_waitq);
4556
4557 }
4558
4559
4560 static struct scsi_host_template megaraid_template = {
4561 .module = THIS_MODULE,
4562 .name = "MegaRAID",
4563 .proc_name = "megaraid",
4564 .info = megaraid_info,
4565 .queuecommand = megaraid_queue,
4566 .bios_param = megaraid_biosparam,
4567 .max_sectors = MAX_SECTORS_PER_IO,
4568 .can_queue = MAX_COMMANDS,
4569 .this_id = DEFAULT_INITIATOR_ID,
4570 .sg_tablesize = MAX_SGLIST,
4571 .cmd_per_lun = DEF_CMD_PER_LUN,
4572 .use_clustering = ENABLE_CLUSTERING,
4573 .eh_abort_handler = megaraid_abort,
4574 .eh_device_reset_handler = megaraid_reset,
4575 .eh_bus_reset_handler = megaraid_reset,
4576 .eh_host_reset_handler = megaraid_reset,
4577 };
4578
4579 static int __devinit
4580 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4581 {
4582 struct Scsi_Host *host;
4583 adapter_t *adapter;
4584 unsigned long mega_baseport, tbase, flag = 0;
4585 u16 subsysid, subsysvid;
4586 u8 pci_bus, pci_dev_func;
4587 int irq, i, j;
4588 int error = -ENODEV;
4589
4590 if (pci_enable_device(pdev))
4591 goto out;
4592 pci_set_master(pdev);
4593
4594 pci_bus = pdev->bus->number;
4595 pci_dev_func = pdev->devfn;
4596
4597 /*
4598 * The megaraid3 stuff reports the ID of the Intel part which is not
4599 * remotely specific to the megaraid
4600 */
4601 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4602 u16 magic;
4603 /*
4604 * Don't fall over the Compaq management cards using the same
4605 * PCI identifier
4606 */
4607 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4608 pdev->subsystem_device == 0xC000)
4609 return -ENODEV;
4610 /* Now check the magic signature byte */
4611 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4612 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4613 return -ENODEV;
4614 /* Ok it is probably a megaraid */
4615 }
4616
4617 /*
4618 * For these vendor and device ids, signature offsets are not
4619 * valid and 64 bit is implicit
4620 */
4621 if (id->driver_data & BOARD_64BIT)
4622 flag |= BOARD_64BIT;
4623 else {
4624 u32 magic64;
4625
4626 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4627 if (magic64 == HBA_SIGNATURE_64BIT)
4628 flag |= BOARD_64BIT;
4629 }
4630
4631 subsysvid = pdev->subsystem_vendor;
4632 subsysid = pdev->subsystem_device;
4633
4634 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4635 id->vendor, id->device, pci_bus);
4636
4637 printk("slot %d:func %d\n",
4638 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4639
4640 /* Read the base port and IRQ from PCI */
4641 mega_baseport = pci_resource_start(pdev, 0);
4642 irq = pdev->irq;
4643
4644 tbase = mega_baseport;
4645 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4646 flag |= BOARD_MEMMAP;
4647
4648 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4649 printk(KERN_WARNING "megaraid: mem region busy!\n");
4650 goto out_disable_device;
4651 }
4652
4653 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4654 if (!mega_baseport) {
4655 printk(KERN_WARNING
4656 "megaraid: could not map hba memory\n");
4657 goto out_release_region;
4658 }
4659 } else {
4660 flag |= BOARD_IOMAP;
4661 mega_baseport += 0x10;
4662
4663 if (!request_region(mega_baseport, 16, "megaraid"))
4664 goto out_disable_device;
4665 }
4666
4667 /* Initialize SCSI Host structure */
4668 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4669 if (!host)
4670 goto out_iounmap;
4671
4672 adapter = (adapter_t *)host->hostdata;
4673 memset(adapter, 0, sizeof(adapter_t));
4674
4675 printk(KERN_NOTICE
4676 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4677 host->host_no, mega_baseport, irq);
4678
4679 adapter->base = mega_baseport;
4680
4681 INIT_LIST_HEAD(&adapter->free_list);
4682 INIT_LIST_HEAD(&adapter->pending_list);
4683 INIT_LIST_HEAD(&adapter->completed_list);
4684
4685 adapter->flag = flag;
4686 spin_lock_init(&adapter->lock);
4687 scsi_assign_lock(host, &adapter->lock);
4688
4689 host->cmd_per_lun = max_cmd_per_lun;
4690 host->max_sectors = max_sectors_per_io;
4691
4692 adapter->dev = pdev;
4693 adapter->host = host;
4694
4695 adapter->host->irq = irq;
4696
4697 if (flag & BOARD_MEMMAP)
4698 adapter->host->base = tbase;
4699 else {
4700 adapter->host->io_port = tbase;
4701 adapter->host->n_io_port = 16;
4702 }
4703
4704 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4705
4706 /*
4707 * Allocate buffer to issue internal commands.
4708 */
4709 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4710 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4711 if (!adapter->mega_buffer) {
4712 printk(KERN_WARNING "megaraid: out of RAM.\n");
4713 goto out_host_put;
4714 }
4715
4716 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4717 if (!adapter->scb_list) {
4718 printk(KERN_WARNING "megaraid: out of RAM.\n");
4719 goto out_free_cmd_buffer;
4720 }
4721
4722 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4723 megaraid_isr_memmapped : megaraid_isr_iomapped,
4724 SA_SHIRQ, "megaraid", adapter)) {
4725 printk(KERN_WARNING
4726 "megaraid: Couldn't register IRQ %d!\n", irq);
4727 goto out_free_scb_list;
4728 }
4729
4730 if (mega_setup_mailbox(adapter))
4731 goto out_free_irq;
4732
4733 if (mega_query_adapter(adapter))
4734 goto out_free_mbox;
4735
4736 /*
4737 * Have checks for some buggy f/w
4738 */
4739 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4740 /*
4741 * Which firmware
4742 */
4743 if (!strcmp(adapter->fw_version, "3.00") ||
4744 !strcmp(adapter->fw_version, "3.01")) {
4745
4746 printk( KERN_WARNING
4747 "megaraid: Your card is a Dell PERC "
4748 "2/SC RAID controller with "
4749 "firmware\nmegaraid: 3.00 or 3.01. "
4750 "This driver is known to have "
4751 "corruption issues\nmegaraid: with "
4752 "those firmware versions on this "
4753 "specific card. In order\nmegaraid: "
4754 "to protect your data, please upgrade "
4755 "your firmware to version\nmegaraid: "
4756 "3.10 or later, available from the "
4757 "Dell Technical Support web\n"
4758 "megaraid: site at\nhttp://support."
4759 "dell.com/us/en/filelib/download/"
4760 "index.asp?fileid=2940\n"
4761 );
4762 }
4763 }
4764
4765 /*
4766 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4767 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4768 * support, since this firmware cannot handle 64 bit
4769 * addressing
4770 */
4771 if ((subsysvid == HP_SUBSYS_VID) &&
4772 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4773 /*
4774 * which firmware
4775 */
4776 if (!strcmp(adapter->fw_version, "H01.07") ||
4777 !strcmp(adapter->fw_version, "H01.08") ||
4778 !strcmp(adapter->fw_version, "H01.09") ) {
4779 printk(KERN_WARNING
4780 "megaraid: Firmware H.01.07, "
4781 "H.01.08, and H.01.09 on 1M/2M "
4782 "controllers\n"
4783 "megaraid: do not support 64 bit "
4784 "addressing.\nmegaraid: DISABLING "
4785 "64 bit support.\n");
4786 adapter->flag &= ~BOARD_64BIT;
4787 }
4788 }
4789
4790 if (mega_is_bios_enabled(adapter))
4791 mega_hbas[hba_count].is_bios_enabled = 1;
4792 mega_hbas[hba_count].hostdata_addr = adapter;
4793
4794 /*
4795 * Find out which channel is raid and which is scsi. This is
4796 * for ROMB support.
4797 */
4798 mega_enum_raid_scsi(adapter);
4799
4800 /*
4801 * Find out if a logical drive is set as the boot drive. If
4802 * there is one, will make that as the first logical drive.
4803 * ROMB: Do we have to boot from a physical drive. Then all
4804 * the physical drives would appear before the logical disks.
4805 * Else, all the physical drives would be exported to the mid
4806 * layer after logical drives.
4807 */
4808 mega_get_boot_drv(adapter);
4809
4810 if (adapter->boot_pdrv_enabled) {
4811 j = adapter->product_info.nchannels;
4812 for( i = 0; i < j; i++ )
4813 adapter->logdrv_chan[i] = 0;
4814 for( i = j; i < NVIRT_CHAN + j; i++ )
4815 adapter->logdrv_chan[i] = 1;
4816 } else {
4817 for (i = 0; i < NVIRT_CHAN; i++)
4818 adapter->logdrv_chan[i] = 1;
4819 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4820 adapter->logdrv_chan[i] = 0;
4821 adapter->mega_ch_class <<= NVIRT_CHAN;
4822 }
4823
4824 /*
4825 * Do we support random deletion and addition of logical
4826 * drives
4827 */
4828 adapter->read_ldidmap = 0; /* set it after first logdrv
4829 delete cmd */
4830 adapter->support_random_del = mega_support_random_del(adapter);
4831
4832 /* Initialize SCBs */
4833 if (mega_init_scb(adapter))
4834 goto out_free_mbox;
4835
4836 /*
4837 * Reset the pending commands counter
4838 */
4839 atomic_set(&adapter->pend_cmds, 0);
4840
4841 /*
4842 * Reset the adapter quiescent flag
4843 */
4844 atomic_set(&adapter->quiescent, 0);
4845
4846 hba_soft_state[hba_count] = adapter;
4847
4848 /*
4849 * Fill in the structure which needs to be passed back to the
4850 * application when it does an ioctl() for controller related
4851 * information.
4852 */
4853 i = hba_count;
4854
4855 mcontroller[i].base = mega_baseport;
4856 mcontroller[i].irq = irq;
4857 mcontroller[i].numldrv = adapter->numldrv;
4858 mcontroller[i].pcibus = pci_bus;
4859 mcontroller[i].pcidev = id->device;
4860 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4861 mcontroller[i].pciid = -1;
4862 mcontroller[i].pcivendor = id->vendor;
4863 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4864 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4865
4866
4867 /* Set the Mode of addressing to 64 bit if we can */
4868 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4869 pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
4870 adapter->has_64bit_addr = 1;
4871 } else {
4872 pci_set_dma_mask(pdev, 0xffffffff);
4873 adapter->has_64bit_addr = 0;
4874 }
4875
4876 init_MUTEX(&adapter->int_mtx);
4877 init_waitqueue_head(&adapter->int_waitq);
4878
4879 adapter->this_id = DEFAULT_INITIATOR_ID;
4880 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4881
4882 #if MEGA_HAVE_CLUSTERING
4883 /*
4884 * Is cluster support enabled on this controller
4885 * Note: In a cluster the HBAs ( the initiators ) will have
4886 * different target IDs and we cannot assume it to be 7. Call
4887 * to mega_support_cluster() will get the target ids also if
4888 * the cluster support is available
4889 */
4890 adapter->has_cluster = mega_support_cluster(adapter);
4891 if (adapter->has_cluster) {
4892 printk(KERN_NOTICE
4893 "megaraid: Cluster driver, initiator id:%d\n",
4894 adapter->this_id);
4895 }
4896 #endif
4897
4898 pci_set_drvdata(pdev, host);
4899
4900 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4901
4902 error = scsi_add_host(host, &pdev->dev);
4903 if (error)
4904 goto out_free_mbox;
4905
4906 scsi_scan_host(host);
4907 hba_count++;
4908 return 0;
4909
4910 out_free_mbox:
4911 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4912 adapter->una_mbox64, adapter->una_mbox64_dma);
4913 out_free_irq:
4914 free_irq(adapter->host->irq, adapter);
4915 out_free_scb_list:
4916 kfree(adapter->scb_list);
4917 out_free_cmd_buffer:
4918 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4919 adapter->mega_buffer, adapter->buf_dma_handle);
4920 out_host_put:
4921 scsi_host_put(host);
4922 out_iounmap:
4923 if (flag & BOARD_MEMMAP)
4924 iounmap((void *)mega_baseport);
4925 out_release_region:
4926 if (flag & BOARD_MEMMAP)
4927 release_mem_region(tbase, 128);
4928 else
4929 release_region(mega_baseport, 16);
4930 out_disable_device:
4931 pci_disable_device(pdev);
4932 out:
4933 return error;
4934 }
4935
4936 static void
4937 __megaraid_shutdown(adapter_t *adapter)
4938 {
4939 u_char raw_mbox[sizeof(struct mbox_out)];
4940 mbox_t *mbox = (mbox_t *)raw_mbox;
4941 int i;
4942
4943 /* Flush adapter cache */
4944 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4945 raw_mbox[0] = FLUSH_ADAPTER;
4946
4947 free_irq(adapter->host->irq, adapter);
4948
4949 /* Issue a blocking (interrupts disabled) command to the card */
4950 issue_scb_block(adapter, raw_mbox);
4951
4952 /* Flush disks cache */
4953 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4954 raw_mbox[0] = FLUSH_SYSTEM;
4955
4956 /* Issue a blocking (interrupts disabled) command to the card */
4957 issue_scb_block(adapter, raw_mbox);
4958
4959 if (atomic_read(&adapter->pend_cmds) > 0)
4960 printk(KERN_WARNING "megaraid: pending commands!!\n");
4961
4962 /*
4963 * Have a delibrate delay to make sure all the caches are
4964 * actually flushed.
4965 */
4966 for (i = 0; i <= 10; i++)
4967 mdelay(1000);
4968 }
4969
4970 static void
4971 megaraid_remove_one(struct pci_dev *pdev)
4972 {
4973 struct Scsi_Host *host = pci_get_drvdata(pdev);
4974 adapter_t *adapter = (adapter_t *)host->hostdata;
4975 char buf[12] = { 0 };
4976
4977 scsi_remove_host(host);
4978
4979 __megaraid_shutdown(adapter);
4980
4981 /* Free our resources */
4982 if (adapter->flag & BOARD_MEMMAP) {
4983 iounmap((void *)adapter->base);
4984 release_mem_region(adapter->host->base, 128);
4985 } else
4986 release_region(adapter->base, 16);
4987
4988 mega_free_sgl(adapter);
4989
4990 #ifdef CONFIG_PROC_FS
4991 if (adapter->controller_proc_dir_entry) {
4992 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4993 remove_proc_entry("config",
4994 adapter->controller_proc_dir_entry);
4995 remove_proc_entry("mailbox",
4996 adapter->controller_proc_dir_entry);
4997 #if MEGA_HAVE_ENH_PROC
4998 remove_proc_entry("rebuild-rate",
4999 adapter->controller_proc_dir_entry);
5000 remove_proc_entry("battery-status",
5001 adapter->controller_proc_dir_entry);
5002
5003 remove_proc_entry("diskdrives-ch0",
5004 adapter->controller_proc_dir_entry);
5005 remove_proc_entry("diskdrives-ch1",
5006 adapter->controller_proc_dir_entry);
5007 remove_proc_entry("diskdrives-ch2",
5008 adapter->controller_proc_dir_entry);
5009 remove_proc_entry("diskdrives-ch3",
5010 adapter->controller_proc_dir_entry);
5011
5012 remove_proc_entry("raiddrives-0-9",
5013 adapter->controller_proc_dir_entry);
5014 remove_proc_entry("raiddrives-10-19",
5015 adapter->controller_proc_dir_entry);
5016 remove_proc_entry("raiddrives-20-29",
5017 adapter->controller_proc_dir_entry);
5018 remove_proc_entry("raiddrives-30-39",
5019 adapter->controller_proc_dir_entry);
5020 #endif
5021 sprintf(buf, "hba%d", adapter->host->host_no);
5022 remove_proc_entry(buf, mega_proc_dir_entry);
5023 }
5024 #endif
5025
5026 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5027 adapter->mega_buffer, adapter->buf_dma_handle);
5028 kfree(adapter->scb_list);
5029 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5030 adapter->una_mbox64, adapter->una_mbox64_dma);
5031
5032 scsi_host_put(host);
5033 pci_disable_device(pdev);
5034
5035 hba_count--;
5036 }
5037
5038 static void
5039 megaraid_shutdown(struct device *dev)
5040 {
5041 struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
5042 adapter_t *adapter = (adapter_t *)host->hostdata;
5043
5044 __megaraid_shutdown(adapter);
5045 }
5046
5047 static struct pci_device_id megaraid_pci_tbl[] = {
5048 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
5049 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5050 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
5051 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5052 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
5053 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5054 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5055 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5056 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5057 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5058 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
5059 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5060 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5061 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5062 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3,
5063 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5064 {0,}
5065 };
5066 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5067
5068 static struct pci_driver megaraid_pci_driver = {
5069 .name = "megaraid",
5070 .id_table = megaraid_pci_tbl,
5071 .probe = megaraid_probe_one,
5072 .remove = __devexit_p(megaraid_remove_one),
5073 .driver = {
5074 .shutdown = megaraid_shutdown,
5075 },
5076 };
5077
5078 static int __init megaraid_init(void)
5079 {
5080 int error;
5081
5082 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5083 max_cmd_per_lun = MAX_CMD_PER_LUN;
5084 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5085 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5086
5087 #ifdef CONFIG_PROC_FS
5088 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5089 if (!mega_proc_dir_entry) {
5090 printk(KERN_WARNING
5091 "megaraid: failed to create megaraid root\n");
5092 }
5093 #endif
5094 error = pci_module_init(&megaraid_pci_driver);
5095 if (error) {
5096 #ifdef CONFIG_PROC_FS
5097 remove_proc_entry("megaraid", &proc_root);
5098 #endif
5099 return error;
5100 }
5101
5102 /*
5103 * Register the driver as a character device, for applications
5104 * to access it for ioctls.
5105 * First argument (major) to register_chrdev implies a dynamic
5106 * major number allocation.
5107 */
5108 major = register_chrdev(0, "megadev", &megadev_fops);
5109 if (!major) {
5110 printk(KERN_WARNING
5111 "megaraid: failed to register char device\n");
5112 }
5113
5114 return 0;
5115 }
5116
5117 static void __exit megaraid_exit(void)
5118 {
5119 /*
5120 * Unregister the character device interface to the driver.
5121 */
5122 unregister_chrdev(major, "megadev");
5123
5124 pci_unregister_driver(&megaraid_pci_driver);
5125
5126 #ifdef CONFIG_PROC_FS
5127 remove_proc_entry("megaraid", &proc_root);
5128 #endif
5129 }
5130
5131 module_init(megaraid_init);
5132 module_exit(megaraid_exit);
5133
5134 /* vi: set ts=8 sw=8 tw=78: */
Linux kernel - Deliverables
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