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[SCSI] megaraid: fix warnings when CONFIG_PROC_FS=n
[mirror_ubuntu-kernels.git] / drivers / scsi / megaraid.c
CommitLineData
1da177e4
LT		 1/*
2 *
3 * Linux MegaRAID device driver
4 *
3492b328 5 * Copyright (c) 2002 LSI Logic Corporation.
1da177e4
LT		 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 *
3492b328
JS		 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
1da177e4
LT		 22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <asm/uaccess.h>
38#include <asm/io.h>
8d115f84 39#include <linux/completion.h>
1da177e4
LT		 40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/reboot.h>
43#include <linux/module.h>
44#include <linux/list.h>
45#include <linux/interrupt.h>
46#include <linux/pci.h>
47#include <linux/init.h>
910638ae 48#include <linux/dma-mapping.h>
1da177e4
LT		 49#include <scsi/scsicam.h>
50
51#include "scsi.h"
52#include <scsi/scsi_host.h>
53
54#include "megaraid.h"
55
3492b328 56#define MEGARAID_MODULE_VERSION "2.00.4"
1da177e4 57
3492b328
JS		 58MODULE_AUTHOR ("sju@lsil.com");
59MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
1da177e4
LT		 60MODULE_LICENSE ("GPL");
61MODULE_VERSION(MEGARAID_MODULE_VERSION);
62
63static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
64module_param(max_cmd_per_lun, uint, 0);
65MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
66
67static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
68module_param(max_sectors_per_io, ushort, 0);
69MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70
71
72static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
73module_param(max_mbox_busy_wait, ushort, 0);
74MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
75
00769ec4
JG		 76#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
77#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
78#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
79#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
1da177e4
LT		 80
81/*
82 * Global variables
83 */
84
85static int hba_count;
86static adapter_t *hba_soft_state[MAX_CONTROLLERS];
87static struct proc_dir_entry *mega_proc_dir_entry;
88
89/* For controller re-ordering */
90static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92/*
93 * The File Operations structure for the serial/ioctl interface of the driver
94 */
00977a59 95static const struct file_operations megadev_fops = {
1da177e4
LT		 96 .owner = THIS_MODULE,
97 .ioctl = megadev_ioctl,
98 .open = megadev_open,
99};
100
101/*
102 * Array to structures for storing the information about the controllers. This
103 * information is sent to the user level applications, when they do an ioctl
104 * for this information.
105 */
106static struct mcontroller mcontroller[MAX_CONTROLLERS];
107
108/* The current driver version */
109static u32 driver_ver = 0x02000000;
110
111/* major number used by the device for character interface */
112static int major;
113
114#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115
116
117/*
118 * Debug variable to print some diagnostic messages
119 */
120static int trace_level;
121
122/**
123 * mega_setup_mailbox()
124 * @adapter - pointer to our soft state
125 *
126 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 */
128static int
129mega_setup_mailbox(adapter_t *adapter)
130{
131 unsigned long align;
132
133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
134 sizeof(mbox64_t), &adapter->una_mbox64_dma);
135
136 if( !adapter->una_mbox64 ) return -1;
137
138 adapter->mbox = &adapter->una_mbox64->mbox;
139
140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
141 (~0UL ^ 0xFUL));
142
143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
144
145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
146
147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
148
149 /*
150 * Register the mailbox if the controller is an io-mapped controller
151 */
152 if( adapter->flag & BOARD_IOMAP ) {
153
154 outb_p(adapter->mbox_dma & 0xFF,
155 adapter->host->io_port + MBOX_PORT0);
156
157 outb_p((adapter->mbox_dma >> 8) & 0xFF,
158 adapter->host->io_port + MBOX_PORT1);
159
160 outb_p((adapter->mbox_dma >> 16) & 0xFF,
161 adapter->host->io_port + MBOX_PORT2);
162
163 outb_p((adapter->mbox_dma >> 24) & 0xFF,
164 adapter->host->io_port + MBOX_PORT3);
165
166 outb_p(ENABLE_MBOX_BYTE,
167 adapter->host->io_port + ENABLE_MBOX_REGION);
168
169 irq_ack(adapter);
170
171 irq_enable(adapter);
172 }
173
174 return 0;
175}
176
177
178/*
179 * mega_query_adapter()
180 * @adapter - pointer to our soft state
181 *
182 * Issue the adapter inquiry commands to the controller and find out
183 * information and parameter about the devices attached
184 */
185static int
186mega_query_adapter(adapter_t *adapter)
187{
188 dma_addr_t prod_info_dma_handle;
189 mega_inquiry3 *inquiry3;
190 u8 raw_mbox[sizeof(struct mbox_out)];
191 mbox_t *mbox;
192 int retval;
193
194 /* Initialize adapter inquiry mailbox */
195
196 mbox = (mbox_t *)raw_mbox;
197
198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
199 memset(&mbox->m_out, 0, sizeof(raw_mbox));
200
201 /*
202 * Try to issue Inquiry3 command
203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
204 * update enquiry3 structure
205 */
206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
207
208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
209
210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
213
214 /* Issue a blocking command to the card */
215 if ((retval = issue_scb_block(adapter, raw_mbox))) {
216 /* the adapter does not support 40ld */
217
218 mraid_ext_inquiry *ext_inq;
219 mraid_inquiry *inq;
220 dma_addr_t dma_handle;
221
222 ext_inq = pci_alloc_consistent(adapter->dev,
223 sizeof(mraid_ext_inquiry), &dma_handle);
224
225 if( ext_inq == NULL ) return -1;
226
227 inq = &ext_inq->raid_inq;
228
229 mbox->m_out.xferaddr = (u32)dma_handle;
230
231 /*issue old 0x04 command to adapter */
232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
233
234 issue_scb_block(adapter, raw_mbox);
235
236 /*
237 * update Enquiry3 and ProductInfo structures with
238 * mraid_inquiry structure
239 */
240 mega_8_to_40ld(inq, inquiry3,
241 (mega_product_info *)&adapter->product_info);
242
243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
244 ext_inq, dma_handle);
245
246 } else { /*adapter supports 40ld */
247 adapter->flag |= BOARD_40LD;
248
249 /*
250 * get product_info, which is static information and will be
251 * unchanged
252 */
253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
254 &adapter->product_info,
255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
256
257 mbox->m_out.xferaddr = prod_info_dma_handle;
258
259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
261
262 if ((retval = issue_scb_block(adapter, raw_mbox)))
263 printk(KERN_WARNING
264 "megaraid: Product_info cmd failed with error: %d\n",
265 retval);
266
267 pci_unmap_single(adapter->dev, prod_info_dma_handle,
268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
269 }
270
271
272 /*
273 * kernel scans the channels from 0 to <= max_channel
274 */
275 adapter->host->max_channel =
276 adapter->product_info.nchannels + NVIRT_CHAN -1;
277
278 adapter->host->max_id = 16; /* max targets per channel */
279
280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
281
282 adapter->host->cmd_per_lun = max_cmd_per_lun;
283
284 adapter->numldrv = inquiry3->num_ldrv;
285
286 adapter->max_cmds = adapter->product_info.max_commands;
287
288 if(adapter->max_cmds > MAX_COMMANDS)
289 adapter->max_cmds = MAX_COMMANDS;
290
291 adapter->host->can_queue = adapter->max_cmds - 1;
292
293 /*
294 * Get the maximum number of scatter-gather elements supported by this
295 * firmware
296 */
297 mega_get_max_sgl(adapter);
298
299 adapter->host->sg_tablesize = adapter->sglen;
300
301
302 /* use HP firmware and bios version encoding */
303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
304 sprintf (adapter->fw_version, "%c%d%d.%d%d",
305 adapter->product_info.fw_version[2],
306 adapter->product_info.fw_version[1] >> 8,
307 adapter->product_info.fw_version[1] & 0x0f,
308 adapter->product_info.fw_version[0] >> 8,
309 adapter->product_info.fw_version[0] & 0x0f);
310 sprintf (adapter->bios_version, "%c%d%d.%d%d",
311 adapter->product_info.bios_version[2],
312 adapter->product_info.bios_version[1] >> 8,
313 adapter->product_info.bios_version[1] & 0x0f,
314 adapter->product_info.bios_version[0] >> 8,
315 adapter->product_info.bios_version[0] & 0x0f);
316 } else {
317 memcpy(adapter->fw_version,
318 (char *)adapter->product_info.fw_version, 4);
319 adapter->fw_version[4] = 0;
320
321 memcpy(adapter->bios_version,
322 (char *)adapter->product_info.bios_version, 4);
323
324 adapter->bios_version[4] = 0;
325 }
326
327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
328 adapter->fw_version, adapter->bios_version, adapter->numldrv);
329
330 /*
331 * Do we support extended (>10 bytes) cdbs
332 */
333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
334 if (adapter->support_ext_cdb)
335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
336
337
338 return 0;
339}
340
341/**
342 * mega_runpendq()
343 * @adapter - pointer to our soft state
344 *
345 * Runs through the list of pending requests.
346 */
347static inline void
348mega_runpendq(adapter_t *adapter)
349{
350 if(!list_empty(&adapter->pending_list))
351 __mega_runpendq(adapter);
352}
353
354/*
355 * megaraid_queue()
356 * @scmd - Issue this scsi command
357 * @done - the callback hook into the scsi mid-layer
358 *
359 * The command queuing entry point for the mid-layer.
360 */
361static int
362megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
363{
364 adapter_t *adapter;
365 scb_t *scb;
366 int busy=0;
cb0258a2 367 unsigned long flags;
1da177e4
LT		 368
369 adapter = (adapter_t *)scmd->device->host->hostdata;
370
371 scmd->scsi_done = done;
372
373
374 /*
375 * Allocate and build a SCB request
376 * busy flag will be set if mega_build_cmd() command could not
377 * allocate scb. We will return non-zero status in that case.
378 * NOTE: scb can be null even though certain commands completed
379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
380 * return 0 in that case.
381 */
382
cb0258a2 383 spin_lock_irqsave(&adapter->lock, flags);
1da177e4 384 scb = mega_build_cmd(adapter, scmd, &busy);
238f9b06
CH		 385 if (!scb)
386 goto out;
1da177e4 387
238f9b06
CH		 388 scb->state |= SCB_PENDQ;
389 list_add_tail(&scb->list, &adapter->pending_list);
1da177e4 390
238f9b06
CH		 391 /*
392 * Check if the HBA is in quiescent state, e.g., during a
393 * delete logical drive opertion. If it is, don't run
394 * the pending_list.
395 */
396 if (atomic_read(&adapter->quiescent) == 0)
397 mega_runpendq(adapter);
1da177e4 398
238f9b06
CH		 399 busy = 0;
400 out:
401 spin_unlock_irqrestore(&adapter->lock, flags);
1da177e4
LT		 402 return busy;
403}
404
405/**
406 * mega_allocate_scb()
407 * @adapter - pointer to our soft state
408 * @cmd - scsi command from the mid-layer
409 *
410 * Allocate a SCB structure. This is the central structure for controller
411 * commands.
412 */
413static inline scb_t *
414mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
415{
416 struct list_head *head = &adapter->free_list;
417 scb_t *scb;
418
419 /* Unlink command from Free List */
420 if( !list_empty(head) ) {
421
422 scb = list_entry(head->next, scb_t, list);
423
424 list_del_init(head->next);
425
426 scb->state = SCB_ACTIVE;
427 scb->cmd = cmd;
428 scb->dma_type = MEGA_DMA_TYPE_NONE;
429
430 return scb;
431 }
432
433 return NULL;
434}
435
436/**
437 * mega_get_ldrv_num()
438 * @adapter - pointer to our soft state
439 * @cmd - scsi mid layer command
440 * @channel - channel on the controller
441 *
442 * Calculate the logical drive number based on the information in scsi command
443 * and the channel number.
444 */
445static inline int
446mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
447{
448 int tgt;
449 int ldrv_num;
450
451 tgt = cmd->device->id;
452
453 if ( tgt > adapter->this_id )
454 tgt--; /* we do not get inquires for initiator id */
455
456 ldrv_num = (channel * 15) + tgt;
457
458
459 /*
460 * If we have a logical drive with boot enabled, project it first
461 */
462 if( adapter->boot_ldrv_enabled ) {
463 if( ldrv_num == 0 ) {
464 ldrv_num = adapter->boot_ldrv;
465 }
466 else {
467 if( ldrv_num <= adapter->boot_ldrv ) {
468 ldrv_num--;
469 }
470 }
471 }
472
473 /*
474 * If "delete logical drive" feature is enabled on this controller.
475 * Do only if at least one delete logical drive operation was done.
476 *
477 * Also, after logical drive deletion, instead of logical drive number,
478 * the value returned should be 0x80+logical drive id.
479 *
480 * These is valid only for IO commands.
481 */
482
483 if (adapter->support_random_del && adapter->read_ldidmap )
484 switch (cmd->cmnd[0]) {
485 case READ_6: /* fall through */
486 case WRITE_6: /* fall through */
487 case READ_10: /* fall through */
488 case WRITE_10:
489 ldrv_num += 0x80;
490 }
491
492 return ldrv_num;
493}
494
495/**
496 * mega_build_cmd()
497 * @adapter - pointer to our soft state
498 * @cmd - Prepare using this scsi command
499 * @busy - busy flag if no resources
500 *
501 * Prepares a command and scatter gather list for the controller. This routine
502 * also finds out if the commands is intended for a logical drive or a
503 * physical device and prepares the controller command accordingly.
504 *
505 * We also re-order the logical drives and physical devices based on their
506 * boot settings.
507 */
508static scb_t *
509mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
510{
511 mega_ext_passthru *epthru;
512 mega_passthru *pthru;
513 scb_t *scb;
514 mbox_t *mbox;
515 long seg;
516 char islogical;
517 int max_ldrv_num;
518 int channel = 0;
519 int target = 0;
520 int ldrv_num = 0; /* logical drive number */
521
522
523 /*
524 * filter the internal and ioctl commands
525 */
526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
5d5ff44f 527 return cmd->request_buffer;
1da177e4
LT		 528 }
529
530
531 /*
532 * We know what channels our logical drives are on - mega_find_card()
533 */
534 islogical = adapter->logdrv_chan[cmd->device->channel];
535
536 /*
537 * The theory: If physical drive is chosen for boot, all the physical
538 * devices are exported before the logical drives, otherwise physical
539 * devices are pushed after logical drives, in which case - Kernel sees
540 * the physical devices on virtual channel which is obviously converted
541 * to actual channel on the HBA.
542 */
543 if( adapter->boot_pdrv_enabled ) {
544 if( islogical ) {
545 /* logical channel */
546 channel = cmd->device->channel -
547 adapter->product_info.nchannels;
548 }
549 else {
550 /* this is physical channel */
551 channel = cmd->device->channel;
552 target = cmd->device->id;
553
554 /*
555 * boot from a physical disk, that disk needs to be
556 * exposed first IF both the channels are SCSI, then
557 * booting from the second channel is not allowed.
558 */
559 if( target == 0 ) {
560 target = adapter->boot_pdrv_tgt;
561 }
562 else if( target == adapter->boot_pdrv_tgt ) {
563 target = 0;
564 }
565 }
566 }
567 else {
568 if( islogical ) {
569 /* this is the logical channel */
570 channel = cmd->device->channel;
571 }
572 else {
573 /* physical channel */
574 channel = cmd->device->channel - NVIRT_CHAN;
575 target = cmd->device->id;
576 }
577 }
578
579
580 if(islogical) {
581
582 /* have just LUN 0 for each target on virtual channels */
583 if (cmd->device->lun) {
584 cmd->result = (DID_BAD_TARGET << 16);
585 cmd->scsi_done(cmd);
586 return NULL;
587 }
588
589 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
590
591
592 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
593 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
594
595 /*
596 * max_ldrv_num increases by 0x80 if some logical drive was
597 * deleted.
598 */
599 if(adapter->read_ldidmap)
600 max_ldrv_num += 0x80;
601
602 if(ldrv_num > max_ldrv_num ) {
603 cmd->result = (DID_BAD_TARGET << 16);
604 cmd->scsi_done(cmd);
605 return NULL;
606 }
607
608 }
609 else {
610 if( cmd->device->lun > 7) {
611 /*
612 * Do not support lun >7 for physically accessed
613 * devices
614 */
615 cmd->result = (DID_BAD_TARGET << 16);
616 cmd->scsi_done(cmd);
617 return NULL;
618 }
619 }
620
621 /*
622 *
623 * Logical drive commands
624 *
625 */
626 if(islogical) {
627 switch (cmd->cmnd[0]) {
628 case TEST_UNIT_READY:
1da177e4
LT		 629#if MEGA_HAVE_CLUSTERING
630 /*
631 * Do we support clustering and is the support enabled
632 * If no, return success always
633 */
634 if( !adapter->has_cluster ) {
635 cmd->result = (DID_OK << 16);
636 cmd->scsi_done(cmd);
637 return NULL;
638 }
639
640 if(!(scb = mega_allocate_scb(adapter, cmd))) {
641 *busy = 1;
642 return NULL;
643 }
644
645 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
646 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
647 scb->raw_mbox[3] = ldrv_num;
648
649 scb->dma_direction = PCI_DMA_NONE;
650
651 return scb;
652#else
653 cmd->result = (DID_OK << 16);
654 cmd->scsi_done(cmd);
655 return NULL;
656#endif
657
51c928c3
JB		 658 case MODE_SENSE: {
659 char *buf;
660
661 if (cmd->use_sg) {
662 struct scatterlist *sg;
663
664 sg = (struct scatterlist *)cmd->request_buffer;
665 buf = kmap_atomic(sg->page, KM_IRQ0) +
666 sg->offset;
667 } else
668 buf = cmd->request_buffer;
f0353301 669 memset(buf, 0, cmd->cmnd[4]);
51c928c3
JB		 670 if (cmd->use_sg) {
671 struct scatterlist *sg;
672
673 sg = (struct scatterlist *)cmd->request_buffer;
674 kunmap_atomic(buf - sg->offset, KM_IRQ0);
675 }
1da177e4
LT		 676 cmd->result = (DID_OK << 16);
677 cmd->scsi_done(cmd);
678 return NULL;
51c928c3 679 }
1da177e4
LT		 680
681 case READ_CAPACITY:
682 case INQUIRY:
683
684 if(!(adapter->flag & (1L << cmd->device->channel))) {
685
686 printk(KERN_NOTICE
687 "scsi%d: scanning scsi channel %d ",
688 adapter->host->host_no,
689 cmd->device->channel);
690 printk("for logical drives.\n");
691
692 adapter->flag |= (1L << cmd->device->channel);
693 }
694
695 /* Allocate a SCB and initialize passthru */
696 if(!(scb = mega_allocate_scb(adapter, cmd))) {
697 *busy = 1;
698 return NULL;
699 }
700 pthru = scb->pthru;
701
702 mbox = (mbox_t *)scb->raw_mbox;
703 memset(mbox, 0, sizeof(scb->raw_mbox));
704 memset(pthru, 0, sizeof(mega_passthru));
705
706 pthru->timeout = 0;
707 pthru->ars = 1;
708 pthru->reqsenselen = 14;
709 pthru->islogical = 1;
710 pthru->logdrv = ldrv_num;
711 pthru->cdblen = cmd->cmd_len;
712 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
713
714 if( adapter->has_64bit_addr ) {
715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
716 }
717 else {
718 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
719 }
720
721 scb->dma_direction = PCI_DMA_FROMDEVICE;
722
723 pthru->numsgelements = mega_build_sglist(adapter, scb,
724 &pthru->dataxferaddr, &pthru->dataxferlen);
725
726 mbox->m_out.xferaddr = scb->pthru_dma_addr;
727
728 return scb;
729
730 case READ_6:
731 case WRITE_6:
732 case READ_10:
733 case WRITE_10:
734 case READ_12:
735 case WRITE_12:
736
737 /* Allocate a SCB and initialize mailbox */
738 if(!(scb = mega_allocate_scb(adapter, cmd))) {
739 *busy = 1;
740 return NULL;
741 }
742 mbox = (mbox_t *)scb->raw_mbox;
743
744 memset(mbox, 0, sizeof(scb->raw_mbox));
745 mbox->m_out.logdrv = ldrv_num;
746
747 /*
748 * A little hack: 2nd bit is zero for all scsi read
749 * commands and is set for all scsi write commands
750 */
751 if( adapter->has_64bit_addr ) {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE64:
754 MEGA_MBOXCMD_LREAD64 ;
755 }
756 else {
757 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
758 MEGA_MBOXCMD_LWRITE:
759 MEGA_MBOXCMD_LREAD ;
760 }
761
762 /*
763 * 6-byte READ(0x08) or WRITE(0x0A) cdb
764 */
765 if( cmd->cmd_len == 6 ) {
766 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
767 mbox->m_out.lba =
768 ((u32)cmd->cmnd[1] << 16) |
769 ((u32)cmd->cmnd[2] << 8) |
770 (u32)cmd->cmnd[3];
771
772 mbox->m_out.lba &= 0x1FFFFF;
773
774#if MEGA_HAVE_STATS
775 /*
776 * Take modulo 0x80, since the logical drive
777 * number increases by 0x80 when a logical
778 * drive was deleted
779 */
780 if (*cmd->cmnd == READ_6) {
781 adapter->nreads[ldrv_num%0x80]++;
782 adapter->nreadblocks[ldrv_num%0x80] +=
783 mbox->m_out.numsectors;
784 } else {
785 adapter->nwrites[ldrv_num%0x80]++;
786 adapter->nwriteblocks[ldrv_num%0x80] +=
787 mbox->m_out.numsectors;
788 }
789#endif
790 }
791
792 /*
793 * 10-byte READ(0x28) or WRITE(0x2A) cdb
794 */
795 if( cmd->cmd_len == 10 ) {
796 mbox->m_out.numsectors =
797 (u32)cmd->cmnd[8] |
798 ((u32)cmd->cmnd[7] << 8);
799 mbox->m_out.lba =
800 ((u32)cmd->cmnd[2] << 24) |
801 ((u32)cmd->cmnd[3] << 16) |
802 ((u32)cmd->cmnd[4] << 8) |
803 (u32)cmd->cmnd[5];
804
805#if MEGA_HAVE_STATS
806 if (*cmd->cmnd == READ_10) {
807 adapter->nreads[ldrv_num%0x80]++;
808 adapter->nreadblocks[ldrv_num%0x80] +=
809 mbox->m_out.numsectors;
810 } else {
811 adapter->nwrites[ldrv_num%0x80]++;
812 adapter->nwriteblocks[ldrv_num%0x80] +=
813 mbox->m_out.numsectors;
814 }
815#endif
816 }
817
818 /*
819 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
820 */
821 if( cmd->cmd_len == 12 ) {
822 mbox->m_out.lba =
823 ((u32)cmd->cmnd[2] << 24) |
824 ((u32)cmd->cmnd[3] << 16) |
825 ((u32)cmd->cmnd[4] << 8) |
826 (u32)cmd->cmnd[5];
827
828 mbox->m_out.numsectors =
829 ((u32)cmd->cmnd[6] << 24) |
830 ((u32)cmd->cmnd[7] << 16) |
831 ((u32)cmd->cmnd[8] << 8) |
832 (u32)cmd->cmnd[9];
833
834#if MEGA_HAVE_STATS
835 if (*cmd->cmnd == READ_12) {
836 adapter->nreads[ldrv_num%0x80]++;
837 adapter->nreadblocks[ldrv_num%0x80] +=
838 mbox->m_out.numsectors;
839 } else {
840 adapter->nwrites[ldrv_num%0x80]++;
841 adapter->nwriteblocks[ldrv_num%0x80] +=
842 mbox->m_out.numsectors;
843 }
844#endif
845 }
846
847 /*
848 * If it is a read command
849 */
850 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
851 scb->dma_direction = PCI_DMA_FROMDEVICE;
852 }
853 else {
854 scb->dma_direction = PCI_DMA_TODEVICE;
855 }
856
857 /* Calculate Scatter-Gather info */
858 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
859 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
860
861 return scb;
862
863#if MEGA_HAVE_CLUSTERING
864 case RESERVE: /* Fall through */
865 case RELEASE:
866
867 /*
868 * Do we support clustering and is the support enabled
869 */
870 if( ! adapter->has_cluster ) {
871
872 cmd->result = (DID_BAD_TARGET << 16);
873 cmd->scsi_done(cmd);
874 return NULL;
875 }
876
877 /* Allocate a SCB and initialize mailbox */
878 if(!(scb = mega_allocate_scb(adapter, cmd))) {
879 *busy = 1;
880 return NULL;
881 }
882
883 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
884 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
885 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
886
887 scb->raw_mbox[3] = ldrv_num;
888
889 scb->dma_direction = PCI_DMA_NONE;
890
891 return scb;
892#endif
893
894 default:
895 cmd->result = (DID_BAD_TARGET << 16);
896 cmd->scsi_done(cmd);
897 return NULL;
898 }
899 }
900
901 /*
902 * Passthru drive commands
903 */
904 else {
905 /* Allocate a SCB and initialize passthru */
906 if(!(scb = mega_allocate_scb(adapter, cmd))) {
907 *busy = 1;
908 return NULL;
909 }
910
911 mbox = (mbox_t *)scb->raw_mbox;
912 memset(mbox, 0, sizeof(scb->raw_mbox));
913
914 if( adapter->support_ext_cdb ) {
915
916 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
917 channel, target);
918
919 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
920
921 mbox->m_out.xferaddr = scb->epthru_dma_addr;
922
923 }
924 else {
925
926 pthru = mega_prepare_passthru(adapter, scb, cmd,
927 channel, target);
928
929 /* Initialize mailbox */
930 if( adapter->has_64bit_addr ) {
931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
932 }
933 else {
934 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
935 }
936
937 mbox->m_out.xferaddr = scb->pthru_dma_addr;
938
939 }
940 return scb;
941 }
942 return NULL;
943}
944
945
946/**
947 * mega_prepare_passthru()
948 * @adapter - pointer to our soft state
949 * @scb - our scsi control block
950 * @cmd - scsi command from the mid-layer
951 * @channel - actual channel on the controller
952 * @target - actual id on the controller.
953 *
954 * prepare a command for the scsi physical devices.
955 */
956static mega_passthru *
957mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
958 int channel, int target)
959{
960 mega_passthru *pthru;
961
962 pthru = scb->pthru;
963 memset(pthru, 0, sizeof (mega_passthru));
964
965 /* 0=6sec/1=60sec/2=10min/3=3hrs */
966 pthru->timeout = 2;
967
968 pthru->ars = 1;
969 pthru->reqsenselen = 14;
970 pthru->islogical = 0;
971
972 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
973
974 pthru->target = (adapter->flag & BOARD_40LD) ?
975 (channel << 4) | target : target;
976
977 pthru->cdblen = cmd->cmd_len;
978 pthru->logdrv = cmd->device->lun;
979
980 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
981
982 /* Not sure about the direction */
983 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
984
985 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
986 switch (cmd->cmnd[0]) {
987 case INQUIRY:
988 case READ_CAPACITY:
989 if(!(adapter->flag & (1L << cmd->device->channel))) {
990
991 printk(KERN_NOTICE
992 "scsi%d: scanning scsi channel %d [P%d] ",
993 adapter->host->host_no,
994 cmd->device->channel, channel);
995 printk("for physical devices.\n");
996
997 adapter->flag |= (1L << cmd->device->channel);
998 }
999 /* Fall through */
1000 default:
1001 pthru->numsgelements = mega_build_sglist(adapter, scb,
1002 &pthru->dataxferaddr, &pthru->dataxferlen);
1003 break;
1004 }
1005 return pthru;
1006}
1007
1008
1009/**
1010 * mega_prepare_extpassthru()
1011 * @adapter - pointer to our soft state
1012 * @scb - our scsi control block
1013 * @cmd - scsi command from the mid-layer
1014 * @channel - actual channel on the controller
1015 * @target - actual id on the controller.
1016 *
1017 * prepare a command for the scsi physical devices. This rountine prepares
1018 * commands for devices which can take extended CDBs (>10 bytes)
1019 */
1020static mega_ext_passthru *
1021mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1022 int channel, int target)
1023{
1024 mega_ext_passthru *epthru;
1025
1026 epthru = scb->epthru;
1027 memset(epthru, 0, sizeof(mega_ext_passthru));
1028
1029 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1030 epthru->timeout = 2;
1031
1032 epthru->ars = 1;
1033 epthru->reqsenselen = 14;
1034 epthru->islogical = 0;
1035
1036 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1037 epthru->target = (adapter->flag & BOARD_40LD) ?
1038 (channel << 4) | target : target;
1039
1040 epthru->cdblen = cmd->cmd_len;
1041 epthru->logdrv = cmd->device->lun;
1042
1043 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1044
1045 /* Not sure about the direction */
1046 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1047
1048 switch(cmd->cmnd[0]) {
1049 case INQUIRY:
1050 case READ_CAPACITY:
1051 if(!(adapter->flag & (1L << cmd->device->channel))) {
1052
1053 printk(KERN_NOTICE
1054 "scsi%d: scanning scsi channel %d [P%d] ",
1055 adapter->host->host_no,
1056 cmd->device->channel, channel);
1057 printk("for physical devices.\n");
1058
1059 adapter->flag |= (1L << cmd->device->channel);
1060 }
1061 /* Fall through */
1062 default:
1063 epthru->numsgelements = mega_build_sglist(adapter, scb,
1064 &epthru->dataxferaddr, &epthru->dataxferlen);
1065 break;
1066 }
1067
1068 return epthru;
1069}
1070
1071static void
1072__mega_runpendq(adapter_t *adapter)
1073{
1074 scb_t *scb;
1075 struct list_head *pos, *next;
1076
1077 /* Issue any pending commands to the card */
1078 list_for_each_safe(pos, next, &adapter->pending_list) {
1079
1080 scb = list_entry(pos, scb_t, list);
1081
1082 if( !(scb->state & SCB_ISSUED) ) {
1083
1084 if( issue_scb(adapter, scb) != 0 )
1085 return;
1086 }
1087 }
1088
1089 return;
1090}
1091
1092
1093/**
1094 * issue_scb()
1095 * @adapter - pointer to our soft state
1096 * @scb - scsi control block
1097 *
1098 * Post a command to the card if the mailbox is available, otherwise return
1099 * busy. We also take the scb from the pending list if the mailbox is
1100 * available.
1101 */
1102static int
1103issue_scb(adapter_t *adapter, scb_t *scb)
1104{
1105 volatile mbox64_t *mbox64 = adapter->mbox64;
1106 volatile mbox_t *mbox = adapter->mbox;
1107 unsigned int i = 0;
1108
1109 if(unlikely(mbox->m_in.busy)) {
1110 do {
1111 udelay(1);
1112 i++;
1113 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1114
1115 if(mbox->m_in.busy) return -1;
1116 }
1117
1118 /* Copy mailbox data into host structure */
1119 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1120 sizeof(struct mbox_out));
1121
1122 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1123 mbox->m_in.busy = 1; /* Set busy */
1124
1125
1126 /*
1127 * Increment the pending queue counter
1128 */
1129 atomic_inc(&adapter->pend_cmds);
1130
1131 switch (mbox->m_out.cmd) {
1132 case MEGA_MBOXCMD_LREAD64:
1133 case MEGA_MBOXCMD_LWRITE64:
1134 case MEGA_MBOXCMD_PASSTHRU64:
1135 case MEGA_MBOXCMD_EXTPTHRU:
1136 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1137 mbox64->xfer_segment_hi = 0;
1138 mbox->m_out.xferaddr = 0xFFFFFFFF;
1139 break;
1140 default:
1141 mbox64->xfer_segment_lo = 0;
1142 mbox64->xfer_segment_hi = 0;
1143 }
1144
1145 /*
1146 * post the command
1147 */
1148 scb->state |= SCB_ISSUED;
1149
1150 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1151 mbox->m_in.poll = 0;
1152 mbox->m_in.ack = 0;
1153 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1154 }
1155 else {
1156 irq_enable(adapter);
1157 issue_command(adapter);
1158 }
1159
1160 return 0;
1161}
1162
1163/*
1164 * Wait until the controller's mailbox is available
1165 */
1166static inline int
1167mega_busywait_mbox (adapter_t *adapter)
1168{
1169 if (adapter->mbox->m_in.busy)
1170 return __mega_busywait_mbox(adapter);
1171 return 0;
1172}
1173
1174/**
1175 * issue_scb_block()
1176 * @adapter - pointer to our soft state
1177 * @raw_mbox - the mailbox
1178 *
1179 * Issue a scb in synchronous and non-interrupt mode
1180 */
1181static int
1182issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1183{
1184 volatile mbox64_t *mbox64 = adapter->mbox64;
1185 volatile mbox_t *mbox = adapter->mbox;
1186 u8 byte;
1187
1188 /* Wait until mailbox is free */
1189 if(mega_busywait_mbox (adapter))
1190 goto bug_blocked_mailbox;
1191
1192 /* Copy mailbox data into host structure */
1193 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1194 mbox->m_out.cmdid = 0xFE;
1195 mbox->m_in.busy = 1;
1196
1197 switch (raw_mbox[0]) {
1198 case MEGA_MBOXCMD_LREAD64:
1199 case MEGA_MBOXCMD_LWRITE64:
1200 case MEGA_MBOXCMD_PASSTHRU64:
1201 case MEGA_MBOXCMD_EXTPTHRU:
1202 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1203 mbox64->xfer_segment_hi = 0;
1204 mbox->m_out.xferaddr = 0xFFFFFFFF;
1205 break;
1206 default:
1207 mbox64->xfer_segment_lo = 0;
1208 mbox64->xfer_segment_hi = 0;
1209 }
1210
1211 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1212 mbox->m_in.poll = 0;
1213 mbox->m_in.ack = 0;
1214 mbox->m_in.numstatus = 0xFF;
1215 mbox->m_in.status = 0xFF;
1216 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1217
1218 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1219 cpu_relax();
1220
1221 mbox->m_in.numstatus = 0xFF;
1222
1223 while( (volatile u8)mbox->m_in.poll != 0x77 )
1224 cpu_relax();
1225
1226 mbox->m_in.poll = 0;
1227 mbox->m_in.ack = 0x77;
1228
1229 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1230
1231 while(RDINDOOR(adapter) & 0x2)
1232 cpu_relax();
1233 }
1234 else {
1235 irq_disable(adapter);
1236 issue_command(adapter);
1237
1238 while (!((byte = irq_state(adapter)) & INTR_VALID))
1239 cpu_relax();
1240
1241 set_irq_state(adapter, byte);
1242 irq_enable(adapter);
1243 irq_ack(adapter);
1244 }
1245
1246 return mbox->m_in.status;
1247
1248bug_blocked_mailbox:
1249 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1250 udelay (1000);
1251 return -1;
1252}
1253
1254
1255/**
1256 * megaraid_isr_iomapped()
1257 * @irq - irq
1258 * @devp - pointer to our soft state
1da177e4
LT		 1259 *
1260 * Interrupt service routine for io-mapped controllers.
1261 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1262 * and service the completed commands.
1263 */
1264static irqreturn_t
7d12e780 1265megaraid_isr_iomapped(int irq, void *devp)
1da177e4
LT		 1266{
1267 adapter_t *adapter = devp;
1268 unsigned long flags;
1269 u8 status;
1270 u8 nstatus;
1271 u8 completed[MAX_FIRMWARE_STATUS];
1272 u8 byte;
1273 int handled = 0;
1274
1275
1276 /*
1277 * loop till F/W has more commands for us to complete.
1278 */
1279 spin_lock_irqsave(&adapter->lock, flags);
1280
1281 do {
1282 /* Check if a valid interrupt is pending */
1283 byte = irq_state(adapter);
1284 if( (byte & VALID_INTR_BYTE) == 0 ) {
1285 /*
1286 * No more pending commands
1287 */
1288 goto out_unlock;
1289 }
1290 set_irq_state(adapter, byte);
1291
1292 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1293 == 0xFF)
1294 cpu_relax();
1295 adapter->mbox->m_in.numstatus = 0xFF;
1296
1297 status = adapter->mbox->m_in.status;
1298
1299 /*
1300 * decrement the pending queue counter
1301 */
1302 atomic_sub(nstatus, &adapter->pend_cmds);
1303
1304 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1305 nstatus);
1306
1307 /* Acknowledge interrupt */
1308 irq_ack(adapter);
1309
1310 mega_cmd_done(adapter, completed, nstatus, status);
1311
1312 mega_rundoneq(adapter);
1313
1314 handled = 1;
1315
1316 /* Loop through any pending requests */
1317 if(atomic_read(&adapter->quiescent) == 0) {
1318 mega_runpendq(adapter);
1319 }
1320
1321 } while(1);
1322
1323 out_unlock:
1324
1325 spin_unlock_irqrestore(&adapter->lock, flags);
1326
1327 return IRQ_RETVAL(handled);
1328}
1329
1330
1331/**
1332 * megaraid_isr_memmapped()
1333 * @irq - irq
1334 * @devp - pointer to our soft state
1da177e4
LT		 1335 *
1336 * Interrupt service routine for memory-mapped controllers.
1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1338 * and service the completed commands.
1339 */
1340static irqreturn_t
7d12e780 1341megaraid_isr_memmapped(int irq, void *devp)
1da177e4
LT		 1342{
1343 adapter_t *adapter = devp;
1344 unsigned long flags;
1345 u8 status;
1346 u32 dword = 0;
1347 u8 nstatus;
1348 u8 completed[MAX_FIRMWARE_STATUS];
1349 int handled = 0;
1350
1351
1352 /*
1353 * loop till F/W has more commands for us to complete.
1354 */
1355 spin_lock_irqsave(&adapter->lock, flags);
1356
1357 do {
1358 /* Check if a valid interrupt is pending */
1359 dword = RDOUTDOOR(adapter);
1360 if(dword != 0x10001234) {
1361 /*
1362 * No more pending commands
1363 */
1364 goto out_unlock;
1365 }
1366 WROUTDOOR(adapter, 0x10001234);
1367
1368 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1369 == 0xFF) {
1370 cpu_relax();
1371 }
1372 adapter->mbox->m_in.numstatus = 0xFF;
1373
1374 status = adapter->mbox->m_in.status;
1375
1376 /*
1377 * decrement the pending queue counter
1378 */
1379 atomic_sub(nstatus, &adapter->pend_cmds);
1380
1381 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1382 nstatus);
1383
1384 /* Acknowledge interrupt */
1385 WRINDOOR(adapter, 0x2);
1386
1387 handled = 1;
1388
00769ec4
JG		 1389 while( RDINDOOR(adapter) & 0x02 )
1390 cpu_relax();
1da177e4
LT		 1391
1392 mega_cmd_done(adapter, completed, nstatus, status);
1393
1394 mega_rundoneq(adapter);
1395
1396 /* Loop through any pending requests */
1397 if(atomic_read(&adapter->quiescent) == 0) {
1398 mega_runpendq(adapter);
1399 }
1400
1401 } while(1);
1402
1403 out_unlock:
1404
1405 spin_unlock_irqrestore(&adapter->lock, flags);
1406
1407 return IRQ_RETVAL(handled);
1408}
1409/**
1410 * mega_cmd_done()
1411 * @adapter - pointer to our soft state
1412 * @completed - array of ids of completed commands
1413 * @nstatus - number of completed commands
1414 * @status - status of the last command completed
1415 *
1416 * Complete the comamnds and call the scsi mid-layer callback hooks.
1417 */
1418static void
1419mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1420{
1421 mega_ext_passthru *epthru = NULL;
1422 struct scatterlist *sgl;
1423 Scsi_Cmnd *cmd = NULL;
1424 mega_passthru *pthru = NULL;
1425 mbox_t *mbox = NULL;
1426 u8 c;
1427 scb_t *scb;
1428 int islogical;
1429 int cmdid;
1430 int i;
1431
1432 /*
1433 * for all the commands completed, call the mid-layer callback routine
1434 * and free the scb.
1435 */
1436 for( i = 0; i < nstatus; i++ ) {
1437
1438 cmdid = completed[i];
1439
1440 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1441 scb = &adapter->int_scb;
1442 cmd = scb->cmd;
1443 mbox = (mbox_t *)scb->raw_mbox;
1444
1445 /*
1446 * Internal command interface do not fire the extended
1447 * passthru or 64-bit passthru
1448 */
1449 pthru = scb->pthru;
1450
1451 }
1452 else {
1453 scb = &adapter->scb_list[cmdid];
1454
1455 /*
1456 * Make sure f/w has completed a valid command
1457 */
1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 printk(KERN_CRIT
1460 "megaraid: invalid command ");
1461 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1462 cmdid, scb->state, scb->cmd);
1463
1464 continue;
1465 }
1466
1467 /*
1468 * Was a abort issued for this command
1469 */
1470 if( scb->state & SCB_ABORT ) {
1471
1472 printk(KERN_WARNING
1473 "megaraid: aborted cmd %lx[%x] complete.\n",
1474 scb->cmd->serial_number, scb->idx);
1475
1476 scb->cmd->result = (DID_ABORT << 16);
1477
1478 list_add_tail(SCSI_LIST(scb->cmd),
1479 &adapter->completed_list);
1480
1481 mega_free_scb(adapter, scb);
1482
1483 continue;
1484 }
1485
1486 /*
1487 * Was a reset issued for this command
1488 */
1489 if( scb->state & SCB_RESET ) {
1490
1491 printk(KERN_WARNING
1492 "megaraid: reset cmd %lx[%x] complete.\n",
1493 scb->cmd->serial_number, scb->idx);
1494
1495 scb->cmd->result = (DID_RESET << 16);
1496
1497 list_add_tail(SCSI_LIST(scb->cmd),
1498 &adapter->completed_list);
1499
1500 mega_free_scb (adapter, scb);
1501
1502 continue;
1503 }
1504
1505 cmd = scb->cmd;
1506 pthru = scb->pthru;
1507 epthru = scb->epthru;
1508 mbox = (mbox_t *)scb->raw_mbox;
1509
1510#if MEGA_HAVE_STATS
1511 {
1512
1513 int logdrv = mbox->m_out.logdrv;
1514
1515 islogical = adapter->logdrv_chan[cmd->channel];
1516 /*
1517 * Maintain an error counter for the logical drive.
1518 * Some application like SNMP agent need such
1519 * statistics
1520 */
1521 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1522 cmd->cmnd[0] == READ_10 ||
1523 cmd->cmnd[0] == READ_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->rd_errors[logdrv%0x80]++;
1529 }
1530
1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1532 cmd->cmnd[0] == WRITE_10 ||
1533 cmd->cmnd[0] == WRITE_12)) {
1534 /*
1535 * Logical drive number increases by 0x80 when
1536 * a logical drive is deleted
1537 */
1538 adapter->wr_errors[logdrv%0x80]++;
1539 }
1540
1541 }
1542#endif
1543 }
1544
1545 /*
1546 * Do not return the presence of hard disk on the channel so,
1547 * inquiry sent, and returned data==hard disk or removable
1548 * hard disk and not logical, request should return failure! -
1549 * PJ
1550 */
1551 islogical = adapter->logdrv_chan[cmd->device->channel];
1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1553
1554 if( cmd->use_sg ) {
1555 sgl = (struct scatterlist *)
1556 cmd->request_buffer;
1557
1558 if( sgl->page ) {
1559 c = *(unsigned char *)
1560 page_address((&sgl[0])->page) +
1561 (&sgl[0])->offset;
1562 }
1563 else {
1564 printk(KERN_WARNING
1565 "megaraid: invalid sg.\n");
1566 c = 0;
1567 }
1568 }
1569 else {
1570 c = *(u8 *)cmd->request_buffer;
1571 }
1572
1573 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1574 ((c & 0x1F ) == TYPE_DISK)) {
1575 status = 0xF0;
1576 }
1577 }
1578
1579 /* clear result; otherwise, success returns corrupt value */
1580 cmd->result = 0;
1581
1582 /* Convert MegaRAID status to Linux error code */
1583 switch (status) {
1584 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1585 cmd->result |= (DID_OK << 16);
1586 break;
1587
1588 case 0x02: /* ERROR_ABORTED, i.e.
1589 SCSI_STATUS_CHECK_CONDITION */
1590
1591 /* set sense_buffer and result fields */
1592 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1593 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1594
1595 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1596 14);
1597
1598 cmd->result = (DRIVER_SENSE << 24) |
1599 (DID_OK << 16) |
1600 (CHECK_CONDITION << 1);
1601 }
1602 else {
1603 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1604
1605 memcpy(cmd->sense_buffer,
1606 epthru->reqsensearea, 14);
1607
1608 cmd->result = (DRIVER_SENSE << 24) |
1609 (DID_OK << 16) |
1610 (CHECK_CONDITION << 1);
1611 } else {
1612 cmd->sense_buffer[0] = 0x70;
1613 cmd->sense_buffer[2] = ABORTED_COMMAND;
1614 cmd->result |= (CHECK_CONDITION << 1);
1615 }
1616 }
1617 break;
1618
1619 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1620 SCSI_STATUS_BUSY */
1621 cmd->result |= (DID_BUS_BUSY << 16) | status;
1622 break;
1623
1624 default:
1625#if MEGA_HAVE_CLUSTERING
1626 /*
1627 * If TEST_UNIT_READY fails, we know
1628 * MEGA_RESERVATION_STATUS failed
1629 */
1630 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635 /*
1636 * Error code returned is 1 if Reserve or Release
1637 * failed or the input parameter is invalid
1638 */
1639 if( status == 1 &&
1640 (cmd->cmnd[0] == RESERVE ||
1641 cmd->cmnd[0] == RELEASE) ) {
1642
1643 cmd->result |= (DID_ERROR << 16) |
1644 (RESERVATION_CONFLICT << 1);
1645 }
1646 else
1647#endif
1648 cmd->result |= (DID_BAD_TARGET << 16)|status;
1649 }
1650
1651 /*
1652 * Only free SCBs for the commands coming down from the
1653 * mid-layer, not for which were issued internally
1654 *
1655 * For internal command, restore the status returned by the
1656 * firmware so that user can interpret it.
1657 */
1658 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1659 cmd->result = status;
1660
1661 /*
1662 * Remove the internal command from the pending list
1663 */
1664 list_del_init(&scb->list);
1665 scb->state = SCB_FREE;
1666 }
1667 else {
1668 mega_free_scb(adapter, scb);
1669 }
1670
1671 /* Add Scsi_Command to end of completed queue */
1672 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1673 }
1674}
1675
1676
1677/*
1678 * mega_runpendq()
1679 *
1680 * Run through the list of completed requests and finish it
1681 */
1682static void
1683mega_rundoneq (adapter_t *adapter)
1684{
1685 Scsi_Cmnd *cmd;
1686 struct list_head *pos;
1687
1688 list_for_each(pos, &adapter->completed_list) {
1689
0a04137e 1690 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1da177e4
LT		 1691
1692 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1693 cmd->scsi_done(cmd);
1694 }
1695
1696 INIT_LIST_HEAD(&adapter->completed_list);
1697}
1698
1699
1700/*
1701 * Free a SCB structure
1702 * Note: We assume the scsi commands associated with this scb is not free yet.
1703 */
1704static void
1705mega_free_scb(adapter_t *adapter, scb_t *scb)
1706{
51c928c3
JB		 1707 unsigned long length;
1708
1da177e4
LT		 1709 switch( scb->dma_type ) {
1710
1711 case MEGA_DMA_TYPE_NONE:
1712 break;
1713
1714 case MEGA_BULK_DATA:
51c928c3
JB		 1715 if (scb->cmd->use_sg == 0)
1716 length = scb->cmd->request_bufflen;
1717 else {
1718 struct scatterlist *sgl =
1719 (struct scatterlist *)scb->cmd->request_buffer;
1720 length = sgl->length;
1721 }
1da177e4 1722 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
51c928c3 1723 length, scb->dma_direction);
1da177e4
LT		 1724 break;
1725
1726 case MEGA_SGLIST:
1727 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1728 scb->cmd->use_sg, scb->dma_direction);
1729 break;
1730
1731 default:
1732 break;
1733 }
1734
1735 /*
1736 * Remove from the pending list
1737 */
1738 list_del_init(&scb->list);
1739
1740 /* Link the scb back into free list */
1741 scb->state = SCB_FREE;
1742 scb->cmd = NULL;
1743
1744 list_add(&scb->list, &adapter->free_list);
1745}
1746
1747
1748static int
1749__mega_busywait_mbox (adapter_t *adapter)
1750{
1751 volatile mbox_t *mbox = adapter->mbox;
1752 long counter;
1753
1754 for (counter = 0; counter < 10000; counter++) {
1755 if (!mbox->m_in.busy)
1756 return 0;
1757 udelay(100); yield();
1758 }
1759 return -1; /* give up after 1 second */
1760}
1761
1762/*
1763 * Copies data to SGLIST
1764 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1765 */
1766static int
1767mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1768{
1769 struct scatterlist *sgl;
1770 struct page *page;
1771 unsigned long offset;
51c928c3 1772 unsigned int length;
1da177e4
LT		 1773 Scsi_Cmnd *cmd;
1774 int sgcnt;
1775 int idx;
1776
1777 cmd = scb->cmd;
1778
1779 /* Scatter-gather not used */
51c928c3
JB		 1780 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1781 !adapter->has_64bit_addr)) {
1782
1783 if (cmd->use_sg == 0) {
1784 page = virt_to_page(cmd->request_buffer);
1785 offset = offset_in_page(cmd->request_buffer);
1786 length = cmd->request_bufflen;
1787 } else {
1788 sgl = (struct scatterlist *)cmd->request_buffer;
1789 page = sgl->page;
1790 offset = sgl->offset;
1791 length = sgl->length;
1792 }
1da177e4
LT		 1793
1794 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1795 page, offset,
51c928c3 1796 length,
1da177e4
LT		 1797 scb->dma_direction);
1798 scb->dma_type = MEGA_BULK_DATA;
1799
1800 /*
1801 * We need to handle special 64-bit commands that need a
1802 * minimum of 1 SG
1803 */
1804 if( adapter->has_64bit_addr ) {
1805 scb->sgl64[0].address = scb->dma_h_bulkdata;
51c928c3 1806 scb->sgl64[0].length = length;
1da177e4 1807 *buf = (u32)scb->sgl_dma_addr;
51c928c3 1808 *len = (u32)length;
1da177e4
LT		 1809 return 1;
1810 }
1811 else {
1812 *buf = (u32)scb->dma_h_bulkdata;
51c928c3 1813 *len = (u32)length;
1da177e4
LT		 1814 }
1815 return 0;
1816 }
1817
1818 sgl = (struct scatterlist *)cmd->request_buffer;
1819
1820 /*
1821 * Copy Scatter-Gather list info into controller structure.
1822 *
1823 * The number of sg elements returned must not exceed our limit
1824 */
1825 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1826 scb->dma_direction);
1827
1828 scb->dma_type = MEGA_SGLIST;
1829
125e1874 1830 BUG_ON(sgcnt > adapter->sglen);
1da177e4 1831
51c928c3
JB		 1832 *len = 0;
1833
1da177e4
LT		 1834 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1835
1836 if( adapter->has_64bit_addr ) {
1837 scb->sgl64[idx].address = sg_dma_address(sgl);
51c928c3 1838 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1da177e4
LT		 1839 }
1840 else {
1841 scb->sgl[idx].address = sg_dma_address(sgl);
51c928c3 1842 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1da177e4
LT		 1843 }
1844 }
1845
1846 /* Reset pointer and length fields */
1847 *buf = scb->sgl_dma_addr;
1848
1da177e4
LT		 1849 /* Return count of SG requests */
1850 return sgcnt;
1851}
1852
1853
1854/*
1855 * mega_8_to_40ld()
1856 *
1857 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1858 * Enquiry3 structures for later use
1859 */
1860static void
1861mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1862 mega_product_info *product_info)
1863{
1864 int i;
1865
1866 product_info->max_commands = inquiry->adapter_info.max_commands;
1867 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1868 product_info->nchannels = inquiry->adapter_info.nchannels;
1869
1870 for (i = 0; i < 4; i++) {
1871 product_info->fw_version[i] =
1872 inquiry->adapter_info.fw_version[i];
1873
1874 product_info->bios_version[i] =
1875 inquiry->adapter_info.bios_version[i];
1876 }
1877 enquiry3->cache_flush_interval =
1878 inquiry->adapter_info.cache_flush_interval;
1879
1880 product_info->dram_size = inquiry->adapter_info.dram_size;
1881
1882 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1883
1884 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1885 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1886 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1887 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1888 }
1889
1890 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1891 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1892}
1893
1894static inline void
1895mega_free_sgl(adapter_t *adapter)
1896{
1897 scb_t *scb;
1898 int i;
1899
1900 for(i = 0; i < adapter->max_cmds; i++) {
1901
1902 scb = &adapter->scb_list[i];
1903
1904 if( scb->sgl64 ) {
1905 pci_free_consistent(adapter->dev,
1906 sizeof(mega_sgl64) * adapter->sglen,
1907 scb->sgl64,
1908 scb->sgl_dma_addr);
1909
1910 scb->sgl64 = NULL;
1911 }
1912
1913 if( scb->pthru ) {
1914 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1915 scb->pthru, scb->pthru_dma_addr);
1916
1917 scb->pthru = NULL;
1918 }
1919
1920 if( scb->epthru ) {
1921 pci_free_consistent(adapter->dev,
1922 sizeof(mega_ext_passthru),
1923 scb->epthru, scb->epthru_dma_addr);
1924
1925 scb->epthru = NULL;
1926 }
1927
1928 }
1929}
1930
1931
1932/*
1933 * Get information about the card/driver
1934 */
1935const char *
1936megaraid_info(struct Scsi_Host *host)
1937{
1938 static char buffer[512];
1939 adapter_t *adapter;
1940
1941 adapter = (adapter_t *)host->hostdata;
1942
1943 sprintf (buffer,
1944 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1945 adapter->fw_version, adapter->product_info.max_commands,
1946 adapter->host->max_id, adapter->host->max_channel,
1947 adapter->host->max_lun);
1948 return buffer;
1949}
1950
1951/*
1952 * Abort a previous SCSI request. Only commands on the pending list can be
1953 * aborted. All the commands issued to the F/W must complete.
1954 */
1955static int
1956megaraid_abort(Scsi_Cmnd *cmd)
1957{
1958 adapter_t *adapter;
1959 int rval;
1960
1961 adapter = (adapter_t *)cmd->device->host->hostdata;
1962
1963 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1964
1965 /*
1966 * This is required here to complete any completed requests
1967 * to be communicated over to the mid layer.
1968 */
1969 mega_rundoneq(adapter);
1970
1971 return rval;
1972}
1973
1974
1975static int
fa4c4966 1976megaraid_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 1977{
1978 adapter_t *adapter;
1979 megacmd_t mc;
1980 int rval;
1981
1982 adapter = (adapter_t *)cmd->device->host->hostdata;
1983
1984#if MEGA_HAVE_CLUSTERING
1985 mc.cmd = MEGA_CLUSTER_CMD;
1986 mc.opcode = MEGA_RESET_RESERVATIONS;
1987
cb0258a2 1988 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 1989 printk(KERN_WARNING
1990 "megaraid: reservation reset failed.\n");
1991 }
1992 else {
1993 printk(KERN_INFO "megaraid: reservation reset.\n");
1994 }
1da177e4
LT		 1995#endif
1996
fa4c4966
JB		 1997 spin_lock_irq(&adapter->lock);
1998
1da177e4
LT		 1999 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
2000
2001 /*
2002 * This is required here to complete any completed requests
2003 * to be communicated over to the mid layer.
2004 */
2005 mega_rundoneq(adapter);
94d0e7b8
JG		 2006 spin_unlock_irq(&adapter->lock);
2007
fa4c4966 2008 return rval;
94d0e7b8 2009}
1da177e4 2010
1da177e4
LT		 2011/**
2012 * megaraid_abort_and_reset()
2013 * @adapter - megaraid soft state
2014 * @cmd - scsi command to be aborted or reset
2015 * @aor - abort or reset flag
2016 *
2017 * Try to locate the scsi command in the pending queue. If found and is not
2018 * issued to the controller, abort/reset it. Otherwise return failure
2019 */
2020static int
2021megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2022{
2023 struct list_head *pos, *next;
2024 scb_t *scb;
2025
2026 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2027 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2028 cmd->cmnd[0], cmd->device->channel,
2029 cmd->device->id, cmd->device->lun);
2030
2031 if(list_empty(&adapter->pending_list))
2032 return FALSE;
2033
2034 list_for_each_safe(pos, next, &adapter->pending_list) {
2035
2036 scb = list_entry(pos, scb_t, list);
2037
2038 if (scb->cmd == cmd) { /* Found command */
2039
2040 scb->state |= aor;
2041
2042 /*
2043 * Check if this command has firmare owenership. If
2044 * yes, we cannot reset this command. Whenever, f/w
2045 * completes this command, we will return appropriate
2046 * status from ISR.
2047 */
2048 if( scb->state & SCB_ISSUED ) {
2049
2050 printk(KERN_WARNING
2051 "megaraid: %s-%lx[%x], fw owner.\n",
2052 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2053 cmd->serial_number, scb->idx);
2054
2055 return FALSE;
2056 }
2057 else {
2058
2059 /*
2060 * Not yet issued! Remove from the pending
2061 * list
2062 */
2063 printk(KERN_WARNING
2064 "megaraid: %s-%lx[%x], driver owner.\n",
2065 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2066 cmd->serial_number, scb->idx);
2067
2068 mega_free_scb(adapter, scb);
2069
2070 if( aor == SCB_ABORT ) {
2071 cmd->result = (DID_ABORT << 16);
2072 }
2073 else {
2074 cmd->result = (DID_RESET << 16);
2075 }
2076
2077 list_add_tail(SCSI_LIST(cmd),
2078 &adapter->completed_list);
2079
2080 return TRUE;
2081 }
2082 }
2083 }
2084
2085 return FALSE;
2086}
2087
2088static inline int
2089make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2090{
bab41e9b 2091 *pdev = alloc_pci_dev();
1da177e4
LT		 2092
2093 if( *pdev == NULL ) return -1;
2094
2095 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2096
910638ae 2097 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
1da177e4
LT		 2098 kfree(*pdev);
2099 return -1;
2100 }
2101
2102 return 0;
2103}
2104
2105static inline void
2106free_local_pdev(struct pci_dev *pdev)
2107{
2108 kfree(pdev);
2109}
2110
2111/**
2112 * mega_allocate_inquiry()
2113 * @dma_handle - handle returned for dma address
2114 * @pdev - handle to pci device
2115 *
2116 * allocates memory for inquiry structure
2117 */
2118static inline void *
2119mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2120{
2121 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2122}
2123
2124
2125static inline void
2126mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2127{
2128 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2129}
2130
2131
2132#ifdef CONFIG_PROC_FS
2133/* Following code handles /proc fs */
2134
2135#define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2136 S_IRUSR | S_IFREG, \
2137 controller_proc_dir_entry, \
2138 func, adapter)
2139
2140/**
2141 * mega_create_proc_entry()
2142 * @index - index in soft state array
2143 * @parent - parent node for this /proc entry
2144 *
2145 * Creates /proc entries for our controllers.
2146 */
2147static void
2148mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2149{
2150 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2151 u8 string[64] = { 0 };
2152 adapter_t *adapter = hba_soft_state[index];
2153
2154 sprintf(string, "hba%d", adapter->host->host_no);
2155
2156 controller_proc_dir_entry =
2157 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2158
2159 if(!controller_proc_dir_entry) {
2160 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2161 return;
2162 }
2163 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2164 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2165 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2166#if MEGA_HAVE_ENH_PROC
2167 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2168 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2169 proc_battery);
2170
2171 /*
2172 * Display each physical drive on its channel
2173 */
2174 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2175 proc_pdrv_ch0);
2176 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2177 proc_pdrv_ch1);
2178 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2179 proc_pdrv_ch2);
2180 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2181 proc_pdrv_ch3);
2182
2183 /*
2184 * Display a set of up to 10 logical drive through each of following
2185 * /proc entries
2186 */
2187 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2188 proc_rdrv_10);
2189 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2190 proc_rdrv_20);
2191 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2192 proc_rdrv_30);
2193 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2194 proc_rdrv_40);
2195#endif
2196}
2197
2198
2199/**
2200 * proc_read_config()
2201 * @page - buffer to write the data in
2202 * @start - where the actual data has been written in page
2203 * @offset - same meaning as the read system call
2204 * @count - same meaning as the read system call
2205 * @eof - set if no more data needs to be returned
2206 * @data - pointer to our soft state
2207 *
2208 * Display configuration information about the controller.
2209 */
2210static int
2211proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2212 void *data)
2213{
2214
2215 adapter_t *adapter = (adapter_t *)data;
2216 int len = 0;
2217
2218 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2219
2220 if(adapter->product_info.product_name[0])
2221 len += sprintf(page+len, "%s\n",
2222 adapter->product_info.product_name);
2223
2224 len += sprintf(page+len, "Controller Type: ");
2225
2226 if( adapter->flag & BOARD_MEMMAP ) {
2227 len += sprintf(page+len,
2228 "438/466/467/471/493/518/520/531/532\n");
2229 }
2230 else {
2231 len += sprintf(page+len,
2232 "418/428/434\n");
2233 }
2234
2235 if(adapter->flag & BOARD_40LD) {
2236 len += sprintf(page+len,
2237 "Controller Supports 40 Logical Drives\n");
2238 }
2239
2240 if(adapter->flag & BOARD_64BIT) {
2241 len += sprintf(page+len,
2242 "Controller capable of 64-bit memory addressing\n");
2243 }
2244 if( adapter->has_64bit_addr ) {
2245 len += sprintf(page+len,
2246 "Controller using 64-bit memory addressing\n");
2247 }
2248 else {
2249 len += sprintf(page+len,
2250 "Controller is not using 64-bit memory addressing\n");
2251 }
2252
2253 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2254 adapter->host->irq);
2255
2256 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2257 adapter->numldrv, adapter->product_info.nchannels);
2258
2259 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2260 adapter->fw_version, adapter->bios_version,
2261 adapter->product_info.dram_size);
2262
2263 len += sprintf(page+len,
2264 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2265 adapter->product_info.max_commands, adapter->max_cmds);
2266
2267 len += sprintf(page+len, "support_ext_cdb = %d\n",
2268 adapter->support_ext_cdb);
2269 len += sprintf(page+len, "support_random_del = %d\n",
2270 adapter->support_random_del);
2271 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2272 adapter->boot_ldrv_enabled);
2273 len += sprintf(page+len, "boot_ldrv = %d\n",
2274 adapter->boot_ldrv);
2275 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2276 adapter->boot_pdrv_enabled);
2277 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2278 adapter->boot_pdrv_ch);
2279 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2280 adapter->boot_pdrv_tgt);
2281 len += sprintf(page+len, "quiescent = %d\n",
2282 atomic_read(&adapter->quiescent));
2283 len += sprintf(page+len, "has_cluster = %d\n",
2284 adapter->has_cluster);
2285
2286 len += sprintf(page+len, "\nModule Parameters:\n");
2287 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2288 max_cmd_per_lun);
2289 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2290 max_sectors_per_io);
2291
2292 *eof = 1;
2293
2294 return len;
2295}
2296
2297
2298
2299/**
2300 * proc_read_stat()
2301 * @page - buffer to write the data in
2302 * @start - where the actual data has been written in page
2303 * @offset - same meaning as the read system call
2304 * @count - same meaning as the read system call
2305 * @eof - set if no more data needs to be returned
2306 * @data - pointer to our soft state
2307 *
2308 * Diaplay statistical information about the I/O activity.
2309 */
2310static int
2311proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2312 void *data)
2313{
2314 adapter_t *adapter;
2315 int len;
2316 int i;
2317
2318 i = 0; /* avoid compilation warnings */
2319 len = 0;
2320 adapter = (adapter_t *)data;
2321
2322 len = sprintf(page, "Statistical Information for this controller\n");
2323 len += sprintf(page+len, "pend_cmds = %d\n",
2324 atomic_read(&adapter->pend_cmds));
2325#if MEGA_HAVE_STATS
2326 for(i = 0; i < adapter->numldrv; i++) {
2327 len += sprintf(page+len, "Logical Drive %d:\n", i);
2328
2329 len += sprintf(page+len,
2330 "\tReads Issued = %lu, Writes Issued = %lu\n",
2331 adapter->nreads[i], adapter->nwrites[i]);
2332
2333 len += sprintf(page+len,
2334 "\tSectors Read = %lu, Sectors Written = %lu\n",
2335 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2336
2337 len += sprintf(page+len,
2338 "\tRead errors = %lu, Write errors = %lu\n\n",
2339 adapter->rd_errors[i], adapter->wr_errors[i]);
2340 }
2341#else
2342 len += sprintf(page+len,
2343 "IO and error counters not compiled in driver.\n");
2344#endif
2345
2346 *eof = 1;
2347
2348 return len;
2349}
2350
2351
2352/**
2353 * proc_read_mbox()
2354 * @page - buffer to write the data in
2355 * @start - where the actual data has been written in page
2356 * @offset - same meaning as the read system call
2357 * @count - same meaning as the read system call
2358 * @eof - set if no more data needs to be returned
2359 * @data - pointer to our soft state
2360 *
2361 * Display mailbox information for the last command issued. This information
2362 * is good for debugging.
2363 */
2364static int
2365proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2366 void *data)
2367{
2368
2369 adapter_t *adapter = (adapter_t *)data;
2370 volatile mbox_t *mbox = adapter->mbox;
2371 int len = 0;
2372
2373 len = sprintf(page, "Contents of Mail Box Structure\n");
2374 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2375 mbox->m_out.cmd);
2376 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2377 mbox->m_out.cmdid);
2378 len += sprintf(page+len, " No of Sectors= %04d\n",
2379 mbox->m_out.numsectors);
2380 len += sprintf(page+len, " LBA = 0x%02x\n",
2381 mbox->m_out.lba);
2382 len += sprintf(page+len, " DTA = 0x%08x\n",
2383 mbox->m_out.xferaddr);
2384 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2385 mbox->m_out.logdrv);
2386 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2387 mbox->m_out.numsgelements);
2388 len += sprintf(page+len, " Busy = %01x\n",
2389 mbox->m_in.busy);
2390 len += sprintf(page+len, " Status = 0x%02x\n",
2391 mbox->m_in.status);
2392
2393 *eof = 1;
2394
2395 return len;
2396}
2397
2398
2399/**
2400 * proc_rebuild_rate()
2401 * @page - buffer to write the data in
2402 * @start - where the actual data has been written in page
2403 * @offset - same meaning as the read system call
2404 * @count - same meaning as the read system call
2405 * @eof - set if no more data needs to be returned
2406 * @data - pointer to our soft state
2407 *
2408 * Display current rebuild rate
2409 */
2410static int
2411proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2412 void *data)
2413{
2414 adapter_t *adapter = (adapter_t *)data;
2415 dma_addr_t dma_handle;
2416 caddr_t inquiry;
2417 struct pci_dev *pdev;
2418 int len = 0;
2419
2420 if( make_local_pdev(adapter, &pdev) != 0 ) {
2421 *eof = 1;
2422 return len;
2423 }
2424
2425 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2426 free_local_pdev(pdev);
2427 *eof = 1;
2428 return len;
2429 }
2430
2431 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2432
2433 len = sprintf(page, "Adapter inquiry failed.\n");
2434
2435 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2436
2437 mega_free_inquiry(inquiry, dma_handle, pdev);
2438
2439 free_local_pdev(pdev);
2440
2441 *eof = 1;
2442
2443 return len;
2444 }
2445
2446 if( adapter->flag & BOARD_40LD ) {
2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2448 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2449 }
2450 else {
2451 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2452 ((mraid_ext_inquiry *)
2453 inquiry)->raid_inq.adapter_info.rebuild_rate);
2454 }
2455
2456
2457 mega_free_inquiry(inquiry, dma_handle, pdev);
2458
2459 free_local_pdev(pdev);
2460
2461 *eof = 1;
2462
2463 return len;
2464}
2465
2466
2467/**
2468 * proc_battery()
2469 * @page - buffer to write the data in
2470 * @start - where the actual data has been written in page
2471 * @offset - same meaning as the read system call
2472 * @count - same meaning as the read system call
2473 * @eof - set if no more data needs to be returned
2474 * @data - pointer to our soft state
2475 *
2476 * Display information about the battery module on the controller.
2477 */
2478static int
2479proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2480 void *data)
2481{
2482 adapter_t *adapter = (adapter_t *)data;
2483 dma_addr_t dma_handle;
2484 caddr_t inquiry;
2485 struct pci_dev *pdev;
2486 u8 battery_status = 0;
2487 char str[256];
2488 int len = 0;
2489
2490 if( make_local_pdev(adapter, &pdev) != 0 ) {
2491 *eof = 1;
2492 return len;
2493 }
2494
2495 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2496 free_local_pdev(pdev);
2497 *eof = 1;
2498 return len;
2499 }
2500
2501 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2502
2503 len = sprintf(page, "Adapter inquiry failed.\n");
2504
2505 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2506
2507 mega_free_inquiry(inquiry, dma_handle, pdev);
2508
2509 free_local_pdev(pdev);
2510
2511 *eof = 1;
2512
2513 return len;
2514 }
2515
2516 if( adapter->flag & BOARD_40LD ) {
2517 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2518 }
2519 else {
2520 battery_status = ((mraid_ext_inquiry *)inquiry)->
2521 raid_inq.adapter_info.battery_status;
2522 }
2523
2524 /*
2525 * Decode the battery status
2526 */
2527 sprintf(str, "Battery Status:[%d]", battery_status);
2528
2529 if(battery_status == MEGA_BATT_CHARGE_DONE)
2530 strcat(str, " Charge Done");
2531
2532 if(battery_status & MEGA_BATT_MODULE_MISSING)
2533 strcat(str, " Module Missing");
2534
2535 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2536 strcat(str, " Low Voltage");
2537
2538 if(battery_status & MEGA_BATT_TEMP_HIGH)
2539 strcat(str, " Temperature High");
2540
2541 if(battery_status & MEGA_BATT_PACK_MISSING)
2542 strcat(str, " Pack Missing");
2543
2544 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2545 strcat(str, " Charge In-progress");
2546
2547 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2548 strcat(str, " Charge Fail");
2549
2550 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2551 strcat(str, " Cycles Exceeded");
2552
2553 len = sprintf(page, "%s\n", str);
2554
2555
2556 mega_free_inquiry(inquiry, dma_handle, pdev);
2557
2558 free_local_pdev(pdev);
2559
2560 *eof = 1;
2561
2562 return len;
2563}
2564
2565
2566/**
2567 * proc_pdrv_ch0()
2568 * @page - buffer to write the data in
2569 * @start - where the actual data has been written in page
2570 * @offset - same meaning as the read system call
2571 * @count - same meaning as the read system call
2572 * @eof - set if no more data needs to be returned
2573 * @data - pointer to our soft state
2574 *
2575 * Display information about the physical drives on physical channel 0.
2576 */
2577static int
2578proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2579 void *data)
2580{
2581 adapter_t *adapter = (adapter_t *)data;
2582
2583 *eof = 1;
2584
2585 return (proc_pdrv(adapter, page, 0));
2586}
2587
2588
2589/**
2590 * proc_pdrv_ch1()
2591 * @page - buffer to write the data in
2592 * @start - where the actual data has been written in page
2593 * @offset - same meaning as the read system call
2594 * @count - same meaning as the read system call
2595 * @eof - set if no more data needs to be returned
2596 * @data - pointer to our soft state
2597 *
2598 * Display information about the physical drives on physical channel 1.
2599 */
2600static int
2601proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2602 void *data)
2603{
2604 adapter_t *adapter = (adapter_t *)data;
2605
2606 *eof = 1;
2607
2608 return (proc_pdrv(adapter, page, 1));
2609}
2610
2611
2612/**
2613 * proc_pdrv_ch2()
2614 * @page - buffer to write the data in
2615 * @start - where the actual data has been written in page
2616 * @offset - same meaning as the read system call
2617 * @count - same meaning as the read system call
2618 * @eof - set if no more data needs to be returned
2619 * @data - pointer to our soft state
2620 *
2621 * Display information about the physical drives on physical channel 2.
2622 */
2623static int
2624proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2625 void *data)
2626{
2627 adapter_t *adapter = (adapter_t *)data;
2628
2629 *eof = 1;
2630
2631 return (proc_pdrv(adapter, page, 2));
2632}
2633
2634
2635/**
2636 * proc_pdrv_ch3()
2637 * @page - buffer to write the data in
2638 * @start - where the actual data has been written in page
2639 * @offset - same meaning as the read system call
2640 * @count - same meaning as the read system call
2641 * @eof - set if no more data needs to be returned
2642 * @data - pointer to our soft state
2643 *
2644 * Display information about the physical drives on physical channel 3.
2645 */
2646static int
2647proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2648 void *data)
2649{
2650 adapter_t *adapter = (adapter_t *)data;
2651
2652 *eof = 1;
2653
2654 return (proc_pdrv(adapter, page, 3));
2655}
2656
2657
2658/**
2659 * proc_pdrv()
2660 * @page - buffer to write the data in
2661 * @adapter - pointer to our soft state
2662 *
2663 * Display information about the physical drives.
2664 */
2665static int
2666proc_pdrv(adapter_t *adapter, char *page, int channel)
2667{
2668 dma_addr_t dma_handle;
2669 char *scsi_inq;
2670 dma_addr_t scsi_inq_dma_handle;
2671 caddr_t inquiry;
2672 struct pci_dev *pdev;
2673 u8 *pdrv_state;
2674 u8 state;
2675 int tgt;
2676 int max_channels;
2677 int len = 0;
2678 char str[80];
2679 int i;
2680
2681 if( make_local_pdev(adapter, &pdev) != 0 ) {
2682 return len;
2683 }
2684
2685 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2686 goto free_pdev;
2687 }
2688
2689 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2690 len = sprintf(page, "Adapter inquiry failed.\n");
2691
2692 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2693
2694 goto free_inquiry;
2695 }
2696
2697
2698 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2699
2700 if( scsi_inq == NULL ) {
2701 len = sprintf(page, "memory not available for scsi inq.\n");
2702
2703 goto free_inquiry;
2704 }
2705
2706 if( adapter->flag & BOARD_40LD ) {
2707 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2708 }
2709 else {
2710 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2711 raid_inq.pdrv_info.pdrv_state;
2712 }
2713
2714 max_channels = adapter->product_info.nchannels;
2715
2716 if( channel >= max_channels ) {
2717 goto free_pci;
2718 }
2719
2720 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2721
2722 i = channel*16 + tgt;
2723
2724 state = *(pdrv_state + i);
2725
2726 switch( state & 0x0F ) {
2727
2728 case PDRV_ONLINE:
2729 sprintf(str,
2730 "Channel:%2d Id:%2d State: Online",
2731 channel, tgt);
2732 break;
2733
2734 case PDRV_FAILED:
2735 sprintf(str,
2736 "Channel:%2d Id:%2d State: Failed",
2737 channel, tgt);
2738 break;
2739
2740 case PDRV_RBLD:
2741 sprintf(str,
2742 "Channel:%2d Id:%2d State: Rebuild",
2743 channel, tgt);
2744 break;
2745
2746 case PDRV_HOTSPARE:
2747 sprintf(str,
2748 "Channel:%2d Id:%2d State: Hot spare",
2749 channel, tgt);
2750 break;
2751
2752 default:
2753 sprintf(str,
2754 "Channel:%2d Id:%2d State: Un-configured",
2755 channel, tgt);
2756 break;
2757
2758 }
2759
2760 /*
2761 * This interface displays inquiries for disk drives
2762 * only. Inquries for logical drives and non-disk
2763 * devices are available through /proc/scsi/scsi
2764 */
2765 memset(scsi_inq, 0, 256);
2766 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2767 scsi_inq_dma_handle) ||
2768 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2769 continue;
2770 }
2771
2772 /*
2773 * Check for overflow. We print less than 240
2774 * characters for inquiry
2775 */
2776 if( (len + 240) >= PAGE_SIZE ) break;
2777
2778 len += sprintf(page+len, "%s.\n", str);
2779
2780 len += mega_print_inquiry(page+len, scsi_inq);
2781 }
2782
2783free_pci:
2784 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2785free_inquiry:
2786 mega_free_inquiry(inquiry, dma_handle, pdev);
2787free_pdev:
2788 free_local_pdev(pdev);
2789
2790 return len;
2791}
2792
2793
2794/*
2795 * Display scsi inquiry
2796 */
2797static int
2798mega_print_inquiry(char *page, char *scsi_inq)
2799{
2800 int len = 0;
2801 int i;
2802
2803 len = sprintf(page, " Vendor: ");
2804 for( i = 8; i < 16; i++ ) {
2805 len += sprintf(page+len, "%c", scsi_inq[i]);
2806 }
2807
2808 len += sprintf(page+len, " Model: ");
2809
2810 for( i = 16; i < 32; i++ ) {
2811 len += sprintf(page+len, "%c", scsi_inq[i]);
2812 }
2813
2814 len += sprintf(page+len, " Rev: ");
2815
2816 for( i = 32; i < 36; i++ ) {
2817 len += sprintf(page+len, "%c", scsi_inq[i]);
2818 }
2819
2820 len += sprintf(page+len, "\n");
2821
2822 i = scsi_inq[0] & 0x1f;
2823
4ff36718 2824 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
1da177e4
LT		 2825
2826 len += sprintf(page+len,
2827 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2828
2829 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2830 len += sprintf(page+len, " CCS\n");
2831 else
2832 len += sprintf(page+len, "\n");
2833
2834 return len;
2835}
2836
2837
2838/**
2839 * proc_rdrv_10()
2840 * @page - buffer to write the data in
2841 * @start - where the actual data has been written in page
2842 * @offset - same meaning as the read system call
2843 * @count - same meaning as the read system call
2844 * @eof - set if no more data needs to be returned
2845 * @data - pointer to our soft state
2846 *
2847 * Display real time information about the logical drives 0 through 9.
2848 */
2849static int
2850proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2851 void *data)
2852{
2853 adapter_t *adapter = (adapter_t *)data;
2854
2855 *eof = 1;
2856
2857 return (proc_rdrv(adapter, page, 0, 9));
2858}
2859
2860
2861/**
2862 * proc_rdrv_20()
2863 * @page - buffer to write the data in
2864 * @start - where the actual data has been written in page
2865 * @offset - same meaning as the read system call
2866 * @count - same meaning as the read system call
2867 * @eof - set if no more data needs to be returned
2868 * @data - pointer to our soft state
2869 *
2870 * Display real time information about the logical drives 0 through 9.
2871 */
2872static int
2873proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2874 void *data)
2875{
2876 adapter_t *adapter = (adapter_t *)data;
2877
2878 *eof = 1;
2879
2880 return (proc_rdrv(adapter, page, 10, 19));
2881}
2882
2883
2884/**
2885 * proc_rdrv_30()
2886 * @page - buffer to write the data in
2887 * @start - where the actual data has been written in page
2888 * @offset - same meaning as the read system call
2889 * @count - same meaning as the read system call
2890 * @eof - set if no more data needs to be returned
2891 * @data - pointer to our soft state
2892 *
2893 * Display real time information about the logical drives 0 through 9.
2894 */
2895static int
2896proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2897 void *data)
2898{
2899 adapter_t *adapter = (adapter_t *)data;
2900
2901 *eof = 1;
2902
2903 return (proc_rdrv(adapter, page, 20, 29));
2904}
2905
2906
2907/**
2908 * proc_rdrv_40()
2909 * @page - buffer to write the data in
2910 * @start - where the actual data has been written in page
2911 * @offset - same meaning as the read system call
2912 * @count - same meaning as the read system call
2913 * @eof - set if no more data needs to be returned
2914 * @data - pointer to our soft state
2915 *
2916 * Display real time information about the logical drives 0 through 9.
2917 */
2918static int
2919proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2920 void *data)
2921{
2922 adapter_t *adapter = (adapter_t *)data;
2923
2924 *eof = 1;
2925
2926 return (proc_rdrv(adapter, page, 30, 39));
2927}
2928
2929
2930/**
2931 * proc_rdrv()
2932 * @page - buffer to write the data in
2933 * @adapter - pointer to our soft state
2934 * @start - starting logical drive to display
2935 * @end - ending logical drive to display
2936 *
2937 * We do not print the inquiry information since its already available through
2938 * /proc/scsi/scsi interface
2939 */
2940static int
2941proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2942{
2943 dma_addr_t dma_handle;
2944 logdrv_param *lparam;
2945 megacmd_t mc;
2946 char *disk_array;
2947 dma_addr_t disk_array_dma_handle;
2948 caddr_t inquiry;
2949 struct pci_dev *pdev;
2950 u8 *rdrv_state;
2951 int num_ldrv;
2952 u32 array_sz;
2953 int len = 0;
2954 int i;
2955
2956 if( make_local_pdev(adapter, &pdev) != 0 ) {
2957 return len;
2958 }
2959
2960 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2961 free_local_pdev(pdev);
2962 return len;
2963 }
2964
2965 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2966
2967 len = sprintf(page, "Adapter inquiry failed.\n");
2968
2969 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2970
2971 mega_free_inquiry(inquiry, dma_handle, pdev);
2972
2973 free_local_pdev(pdev);
2974
2975 return len;
2976 }
2977
2978 memset(&mc, 0, sizeof(megacmd_t));
2979
2980 if( adapter->flag & BOARD_40LD ) {
2981 array_sz = sizeof(disk_array_40ld);
2982
2983 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2984
2985 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2986 }
2987 else {
2988 array_sz = sizeof(disk_array_8ld);
2989
2990 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2991 raid_inq.logdrv_info.ldrv_state;
2992
2993 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2994 raid_inq.logdrv_info.num_ldrv;
2995 }
2996
2997 disk_array = pci_alloc_consistent(pdev, array_sz,
2998 &disk_array_dma_handle);
2999
3000 if( disk_array == NULL ) {
3001 len = sprintf(page, "memory not available.\n");
3002
3003 mega_free_inquiry(inquiry, dma_handle, pdev);
3004
3005 free_local_pdev(pdev);
3006
3007 return len;
3008 }
3009
3010 mc.xferaddr = (u32)disk_array_dma_handle;
3011
3012 if( adapter->flag & BOARD_40LD ) {
3013 mc.cmd = FC_NEW_CONFIG;
3014 mc.opcode = OP_DCMD_READ_CONFIG;
3015
cb0258a2 3016 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 3017
3018 len = sprintf(page, "40LD read config failed.\n");
3019
3020 mega_free_inquiry(inquiry, dma_handle, pdev);
3021
3022 pci_free_consistent(pdev, array_sz, disk_array,
3023 disk_array_dma_handle);
3024
3025 free_local_pdev(pdev);
3026
3027 return len;
3028 }
3029
3030 }
3031 else {
3032 mc.cmd = NEW_READ_CONFIG_8LD;
3033
cb0258a2 3034 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 3035
3036 mc.cmd = READ_CONFIG_8LD;
3037
cb0258a2 3038 if( mega_internal_command(adapter, &mc,
1da177e4
LT		 3039 NULL) ){
3040
3041 len = sprintf(page,
3042 "8LD read config failed.\n");
3043
3044 mega_free_inquiry(inquiry, dma_handle, pdev);
3045
3046 pci_free_consistent(pdev, array_sz,
3047 disk_array,
3048 disk_array_dma_handle);
3049
3050 free_local_pdev(pdev);
3051
3052 return len;
3053 }
3054 }
3055 }
3056
3057 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3058
3059 if( adapter->flag & BOARD_40LD ) {
3060 lparam =
3061 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3062 }
3063 else {
3064 lparam =
3065 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3066 }
3067
3068 /*
3069 * Check for overflow. We print less than 240 characters for
3070 * information about each logical drive.
3071 */
3072 if( (len + 240) >= PAGE_SIZE ) break;
3073
3074 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3075
3076 switch( rdrv_state[i] & 0x0F ) {
3077 case RDRV_OFFLINE:
3078 len += sprintf(page+len, "state: offline");
3079 break;
3080
3081 case RDRV_DEGRADED:
3082 len += sprintf(page+len, "state: degraded");
3083 break;
3084
3085 case RDRV_OPTIMAL:
3086 len += sprintf(page+len, "state: optimal");
3087 break;
3088
3089 case RDRV_DELETED:
3090 len += sprintf(page+len, "state: deleted");
3091 break;
3092
3093 default:
3094 len += sprintf(page+len, "state: unknown");
3095 break;
3096 }
3097
3098 /*
3099 * Check if check consistency or initialization is going on
3100 * for this logical drive.
3101 */
3102 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3103 len += sprintf(page+len,
3104 ", check-consistency in progress");
3105 }
3106 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3107 len += sprintf(page+len,
3108 ", initialization in progress");
3109 }
3110
3111 len += sprintf(page+len, "\n");
3112
3113 len += sprintf(page+len, "Span depth:%3d, ",
3114 lparam->span_depth);
3115
3116 len += sprintf(page+len, "RAID level:%3d, ",
3117 lparam->level);
3118
3119 len += sprintf(page+len, "Stripe size:%3d, ",
3120 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3121
3122 len += sprintf(page+len, "Row size:%3d\n",
3123 lparam->row_size);
3124
3125
3126 len += sprintf(page+len, "Read Policy: ");
3127
3128 switch(lparam->read_ahead) {
3129
3130 case NO_READ_AHEAD:
3131 len += sprintf(page+len, "No read ahead, ");
3132 break;
3133
3134 case READ_AHEAD:
3135 len += sprintf(page+len, "Read ahead, ");
3136 break;
3137
3138 case ADAP_READ_AHEAD:
3139 len += sprintf(page+len, "Adaptive, ");
3140 break;
3141
3142 }
3143
3144 len += sprintf(page+len, "Write Policy: ");
3145
3146 switch(lparam->write_mode) {
3147
3148 case WRMODE_WRITE_THRU:
3149 len += sprintf(page+len, "Write thru, ");
3150 break;
3151
3152 case WRMODE_WRITE_BACK:
3153 len += sprintf(page+len, "Write back, ");
3154 break;
3155 }
3156
3157 len += sprintf(page+len, "Cache Policy: ");
3158
3159 switch(lparam->direct_io) {
3160
3161 case CACHED_IO:
3162 len += sprintf(page+len, "Cached IO\n\n");
3163 break;
3164
3165 case DIRECT_IO:
3166 len += sprintf(page+len, "Direct IO\n\n");
3167 break;
3168 }
3169 }
3170
3171 mega_free_inquiry(inquiry, dma_handle, pdev);
3172
3173 pci_free_consistent(pdev, array_sz, disk_array,
3174 disk_array_dma_handle);
3175
3176 free_local_pdev(pdev);
3177
3178 return len;
3179}
84a3c97b 3180#else
3181static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3182{
3183}
1da177e4
LT		 3184#endif
3185
3186
3187/**
3188 * megaraid_biosparam()
3189 *
3190 * Return the disk geometry for a particular disk
3191 */
3192static int
3193megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3194 sector_t capacity, int geom[])
3195{
3196 adapter_t *adapter;
3197 unsigned char *bh;
3198 int heads;
3199 int sectors;
3200 int cylinders;
3201 int rval;
3202
3203 /* Get pointer to host config structure */
3204 adapter = (adapter_t *)sdev->host->hostdata;
3205
3206 if (IS_RAID_CH(adapter, sdev->channel)) {
3207 /* Default heads (64) & sectors (32) */
3208 heads = 64;
3209 sectors = 32;
3210 cylinders = (ulong)capacity / (heads * sectors);
3211
3212 /*
3213 * Handle extended translation size for logical drives
3214 * > 1Gb
3215 */
3216 if ((ulong)capacity >= 0x200000) {
3217 heads = 255;
3218 sectors = 63;
3219 cylinders = (ulong)capacity / (heads * sectors);
3220 }
3221
3222 /* return result */
3223 geom[0] = heads;
3224 geom[1] = sectors;
3225 geom[2] = cylinders;
3226 }
3227 else {
3228 bh = scsi_bios_ptable(bdev);
3229
3230 if( bh ) {
3231 rval = scsi_partsize(bh, capacity,
3232 &geom[2], &geom[0], &geom[1]);
3233 kfree(bh);
3234 if( rval != -1 )
3235 return rval;
3236 }
3237
3238 printk(KERN_INFO
3239 "megaraid: invalid partition on this disk on channel %d\n",
3240 sdev->channel);
3241
3242 /* Default heads (64) & sectors (32) */
3243 heads = 64;
3244 sectors = 32;
3245 cylinders = (ulong)capacity / (heads * sectors);
3246
3247 /* Handle extended translation size for logical drives > 1Gb */
3248 if ((ulong)capacity >= 0x200000) {
3249 heads = 255;
3250 sectors = 63;
3251 cylinders = (ulong)capacity / (heads * sectors);
3252 }
3253
3254 /* return result */
3255 geom[0] = heads;
3256 geom[1] = sectors;
3257 geom[2] = cylinders;
3258 }
3259
3260 return 0;
3261}
3262
3263/**
3264 * mega_init_scb()
3265 * @adapter - pointer to our soft state
3266 *
3267 * Allocate memory for the various pointers in the scb structures:
3268 * scatter-gather list pointer, passthru and extended passthru structure
3269 * pointers.
3270 */
3271static int
3272mega_init_scb(adapter_t *adapter)
3273{
3274 scb_t *scb;
3275 int i;
3276
3277 for( i = 0; i < adapter->max_cmds; i++ ) {
3278
3279 scb = &adapter->scb_list[i];
3280
3281 scb->sgl64 = NULL;
3282 scb->sgl = NULL;
3283 scb->pthru = NULL;
3284 scb->epthru = NULL;
3285 }
3286
3287 for( i = 0; i < adapter->max_cmds; i++ ) {
3288
3289 scb = &adapter->scb_list[i];
3290
3291 scb->idx = i;
3292
3293 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3294 sizeof(mega_sgl64) * adapter->sglen,
3295 &scb->sgl_dma_addr);
3296
3297 scb->sgl = (mega_sglist *)scb->sgl64;
3298
3299 if( !scb->sgl ) {
3300 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3301 mega_free_sgl(adapter);
3302 return -1;
3303 }
3304
3305 scb->pthru = pci_alloc_consistent(adapter->dev,
3306 sizeof(mega_passthru),
3307 &scb->pthru_dma_addr);
3308
3309 if( !scb->pthru ) {
3310 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3311 mega_free_sgl(adapter);
3312 return -1;
3313 }
3314
3315 scb->epthru = pci_alloc_consistent(adapter->dev,
3316 sizeof(mega_ext_passthru),
3317 &scb->epthru_dma_addr);
3318
3319 if( !scb->epthru ) {
3320 printk(KERN_WARNING
3321 "Can't allocate extended passthru.\n");
3322 mega_free_sgl(adapter);
3323 return -1;
3324 }
3325
3326
3327 scb->dma_type = MEGA_DMA_TYPE_NONE;
3328
3329 /*
3330 * Link to free list
3331 * lock not required since we are loading the driver, so no
3332 * commands possible right now.
3333 */
3334 scb->state = SCB_FREE;
3335 scb->cmd = NULL;
3336 list_add(&scb->list, &adapter->free_list);
3337 }
3338
3339 return 0;
3340}
3341
3342
3343/**
3344 * megadev_open()
3345 * @inode - unused
3346 * @filep - unused
3347 *
3348 * Routines for the character/ioctl interface to the driver. Find out if this
3349 * is a valid open. If yes, increment the module use count so that it cannot
3350 * be unloaded.
3351 */
3352static int
3353megadev_open (struct inode *inode, struct file *filep)
3354{
3355 /*
3356 * Only allow superuser to access private ioctl interface
3357 */
3358 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3359
3360 return 0;
3361}
3362
3363
3364/**
3365 * megadev_ioctl()
3366 * @inode - Our device inode
3367 * @filep - unused
3368 * @cmd - ioctl command
3369 * @arg - user buffer
3370 *
3371 * ioctl entry point for our private ioctl interface. We move the data in from
3372 * the user space, prepare the command (if necessary, convert the old MIMD
3373 * ioctl to new ioctl command), and issue a synchronous command to the
3374 * controller.
3375 */
3376static int
3377megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3378 unsigned long arg)
3379{
3380 adapter_t *adapter;
3381 nitioctl_t uioc;
3382 int adapno;
3383 int rval;
3384 mega_passthru __user *upthru; /* user address for passthru */
3385 mega_passthru *pthru; /* copy user passthru here */
3386 dma_addr_t pthru_dma_hndl;
3387 void *data = NULL; /* data to be transferred */
3388 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3389 megacmd_t mc;
3390 megastat_t __user *ustats;
3391 int num_ldrv;
3392 u32 uxferaddr = 0;
3393 struct pci_dev *pdev;
3394
3395 ustats = NULL; /* avoid compilation warnings */
3396 num_ldrv = 0;
3397
3398 /*
3399 * Make sure only USCSICMD are issued through this interface.
3400 * MIMD application would still fire different command.
3401 */
3402 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3403 return -EINVAL;
3404 }
3405
3406 /*
3407 * Check and convert a possible MIMD command to NIT command.
3408 * mega_m_to_n() copies the data from the user space, so we do not
3409 * have to do it here.
3410 * NOTE: We will need some user address to copyout the data, therefore
3411 * the inteface layer will also provide us with the required user
3412 * addresses.
3413 */
3414 memset(&uioc, 0, sizeof(nitioctl_t));
3415 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3416 return rval;
3417
3418
3419 switch( uioc.opcode ) {
3420
3421 case GET_DRIVER_VER:
3422 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3423 return (-EFAULT);
3424
3425 break;
3426
3427 case GET_N_ADAP:
3428 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3429 return (-EFAULT);
3430
3431 /*
3432 * Shucks. MIMD interface returns a positive value for number
3433 * of adapters. TODO: Change it to return 0 when there is no
3434 * applicatio using mimd interface.
3435 */
3436 return hba_count;
3437
3438 case GET_ADAP_INFO:
3439
3440 /*
3441 * Which adapter
3442 */
3443 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3444 return (-ENODEV);
3445
3446 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3447 sizeof(struct mcontroller)) )
3448 return (-EFAULT);
3449 break;
3450
3451#if MEGA_HAVE_STATS
3452
3453 case GET_STATS:
3454 /*
3455 * Which adapter
3456 */
3457 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3458 return (-ENODEV);
3459
3460 adapter = hba_soft_state[adapno];
3461
3462 ustats = uioc.uioc_uaddr;
3463
3464 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3465 return (-EFAULT);
3466
3467 /*
3468 * Check for the validity of the logical drive number
3469 */
3470 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3471
3472 if( copy_to_user(ustats->nreads, adapter->nreads,
3473 num_ldrv*sizeof(u32)) )
3474 return -EFAULT;
3475
3476 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3477 num_ldrv*sizeof(u32)) )
3478 return -EFAULT;
3479
3480 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3481 num_ldrv*sizeof(u32)) )
3482 return -EFAULT;
3483
3484 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3485 num_ldrv*sizeof(u32)) )
3486 return -EFAULT;
3487
3488 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3489 num_ldrv*sizeof(u32)) )
3490 return -EFAULT;
3491
3492 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3493 num_ldrv*sizeof(u32)) )
3494 return -EFAULT;
3495
3496 return 0;
3497
3498#endif
3499 case MBOX_CMD:
3500
3501 /*
3502 * Which adapter
3503 */
3504 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3505 return (-ENODEV);
3506
3507 adapter = hba_soft_state[adapno];
3508
3509 /*
3510 * Deletion of logical drive is a special case. The adapter
3511 * should be quiescent before this command is issued.
3512 */
3513 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3514 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3515
3516 /*
3517 * Do we support this feature
3518 */
3519 if( !adapter->support_random_del ) {
3520 printk(KERN_WARNING "megaraid: logdrv ");
3521 printk("delete on non-supporting F/W.\n");
3522
3523 return (-EINVAL);
3524 }
3525
3526 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3527
3528 if( rval == 0 ) {
3529 memset(&mc, 0, sizeof(megacmd_t));
3530
3531 mc.status = rval;
3532
3533 rval = mega_n_to_m((void __user *)arg, &mc);
3534 }
3535
3536 return rval;
3537 }
3538 /*
3539 * This interface only support the regular passthru commands.
3540 * Reject extended passthru and 64-bit passthru
3541 */
3542 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3543 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3544
3545 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3546
3547 return (-EINVAL);
3548 }
3549
3550 /*
3551 * For all internal commands, the buffer must be allocated in
3552 * <4GB address range
3553 */
3554 if( make_local_pdev(adapter, &pdev) != 0 )
3555 return -EIO;
3556
3557 /* Is it a passthru command or a DCMD */
3558 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3559 /* Passthru commands */
3560
3561 pthru = pci_alloc_consistent(pdev,
3562 sizeof(mega_passthru),
3563 &pthru_dma_hndl);
3564
3565 if( pthru == NULL ) {
3566 free_local_pdev(pdev);
3567 return (-ENOMEM);
3568 }
3569
3570 /*
3571 * The user passthru structure
3572 */
3573 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3574
3575 /*
3576 * Copy in the user passthru here.
3577 */
3578 if( copy_from_user(pthru, upthru,
3579 sizeof(mega_passthru)) ) {
3580
3581 pci_free_consistent(pdev,
3582 sizeof(mega_passthru), pthru,
3583 pthru_dma_hndl);
3584
3585 free_local_pdev(pdev);
3586
3587 return (-EFAULT);
3588 }
3589
3590 /*
3591 * Is there a data transfer
3592 */
3593 if( pthru->dataxferlen ) {
3594 data = pci_alloc_consistent(pdev,
3595 pthru->dataxferlen,
3596 &data_dma_hndl);
3597
3598 if( data == NULL ) {
3599 pci_free_consistent(pdev,
3600 sizeof(mega_passthru),
3601 pthru,
3602 pthru_dma_hndl);
3603
3604 free_local_pdev(pdev);
3605
3606 return (-ENOMEM);
3607 }
3608
3609 /*
3610 * Save the user address and point the kernel
3611 * address at just allocated memory
3612 */
3613 uxferaddr = pthru->dataxferaddr;
3614 pthru->dataxferaddr = data_dma_hndl;
3615 }
3616
3617
3618 /*
3619 * Is data coming down-stream
3620 */
3621 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3622 /*
3623 * Get the user data
3624 */
3625 if( copy_from_user(data, (char __user *)uxferaddr,
3626 pthru->dataxferlen) ) {
3627 rval = (-EFAULT);
3628 goto freemem_and_return;
3629 }
3630 }
3631
3632 memset(&mc, 0, sizeof(megacmd_t));
3633
3634 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3635 mc.xferaddr = (u32)pthru_dma_hndl;
3636
3637 /*
3638 * Issue the command
3639 */
cb0258a2 3640 mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 3641
3642 rval = mega_n_to_m((void __user *)arg, &mc);
3643
3644 if( rval ) goto freemem_and_return;
3645
3646
3647 /*
3648 * Is data going up-stream
3649 */
3650 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3651 if( copy_to_user((char __user *)uxferaddr, data,
3652 pthru->dataxferlen) ) {
3653 rval = (-EFAULT);
3654 }
3655 }
3656
3657 /*
3658 * Send the request sense data also, irrespective of
3659 * whether the user has asked for it or not.
3660 */
2d2f8d59
JJ		 3661 if (copy_to_user(upthru->reqsensearea,
3662 pthru->reqsensearea, 14))
3663 rval = -EFAULT;
1da177e4
LT		 3664
3665freemem_and_return:
3666 if( pthru->dataxferlen ) {
3667 pci_free_consistent(pdev,
3668 pthru->dataxferlen, data,
3669 data_dma_hndl);
3670 }
3671
3672 pci_free_consistent(pdev, sizeof(mega_passthru),
3673 pthru, pthru_dma_hndl);
3674
3675 free_local_pdev(pdev);
3676
3677 return rval;
3678 }
3679 else {
3680 /* DCMD commands */
3681
3682 /*
3683 * Is there a data transfer
3684 */
3685 if( uioc.xferlen ) {
3686 data = pci_alloc_consistent(pdev,
3687 uioc.xferlen, &data_dma_hndl);
3688
3689 if( data == NULL ) {
3690 free_local_pdev(pdev);
3691 return (-ENOMEM);
3692 }
3693
3694 uxferaddr = MBOX(uioc)->xferaddr;
3695 }
3696
3697 /*
3698 * Is data coming down-stream
3699 */
3700 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3701 /*
3702 * Get the user data
3703 */
3704 if( copy_from_user(data, (char __user *)uxferaddr,
3705 uioc.xferlen) ) {
3706
3707 pci_free_consistent(pdev,
3708 uioc.xferlen,
3709 data, data_dma_hndl);
3710
3711 free_local_pdev(pdev);
3712
3713 return (-EFAULT);
3714 }
3715 }
3716
3717 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3718
3719 mc.xferaddr = (u32)data_dma_hndl;
3720
3721 /*
3722 * Issue the command
3723 */
cb0258a2 3724 mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 3725
3726 rval = mega_n_to_m((void __user *)arg, &mc);
3727
3728 if( rval ) {
3729 if( uioc.xferlen ) {
3730 pci_free_consistent(pdev,
3731 uioc.xferlen, data,
3732 data_dma_hndl);
3733 }
3734
3735 free_local_pdev(pdev);
3736
3737 return rval;
3738 }
3739
3740 /*
3741 * Is data going up-stream
3742 */
3743 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3744 if( copy_to_user((char __user *)uxferaddr, data,
3745 uioc.xferlen) ) {
3746
3747 rval = (-EFAULT);
3748 }
3749 }
3750
3751 if( uioc.xferlen ) {
3752 pci_free_consistent(pdev,
3753 uioc.xferlen, data,
3754 data_dma_hndl);
3755 }
3756
3757 free_local_pdev(pdev);
3758
3759 return rval;
3760 }
3761
3762 default:
3763 return (-EINVAL);
3764 }
3765
3766 return 0;
3767}
3768
3769/**
3770 * mega_m_to_n()
3771 * @arg - user address
3772 * @uioc - new ioctl structure
3773 *
3774 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3775 * structure
3776 *
3777 * Converts the older mimd ioctl structure to newer NIT structure
3778 */
3779static int
3780mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3781{
3782 struct uioctl_t uioc_mimd;
3783 char signature[8] = {0};
3784 u8 opcode;
3785 u8 subopcode;
3786
3787
3788 /*
3789 * check is the application conforms to NIT. We do not have to do much
3790 * in that case.
3791 * We exploit the fact that the signature is stored in the very
3792 * begining of the structure.
3793 */
3794
3795 if( copy_from_user(signature, arg, 7) )
3796 return (-EFAULT);
3797
3798 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3799
3800 /*
3801 * NOTE NOTE: The nit ioctl is still under flux because of
3802 * change of mailbox definition, in HPE. No applications yet
3803 * use this interface and let's not have applications use this
3804 * interface till the new specifitions are in place.
3805 */
3806 return -EINVAL;
3807#if 0
3808 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3809 return (-EFAULT);
3810 return 0;
3811#endif
3812 }
3813
3814 /*
3815 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3816 *
3817 * Get the user ioctl structure
3818 */
3819 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3820 return (-EFAULT);
3821
3822
3823 /*
3824 * Get the opcode and subopcode for the commands
3825 */
3826 opcode = uioc_mimd.ui.fcs.opcode;
3827 subopcode = uioc_mimd.ui.fcs.subopcode;
3828
3829 switch (opcode) {
3830 case 0x82:
3831
3832 switch (subopcode) {
3833
3834 case MEGAIOC_QDRVRVER: /* Query driver version */
3835 uioc->opcode = GET_DRIVER_VER;
3836 uioc->uioc_uaddr = uioc_mimd.data;
3837 break;
3838
3839 case MEGAIOC_QNADAP: /* Get # of adapters */
3840 uioc->opcode = GET_N_ADAP;
3841 uioc->uioc_uaddr = uioc_mimd.data;
3842 break;
3843
3844 case MEGAIOC_QADAPINFO: /* Get adapter information */
3845 uioc->opcode = GET_ADAP_INFO;
3846 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3847 uioc->uioc_uaddr = uioc_mimd.data;
3848 break;
3849
3850 default:
3851 return(-EINVAL);
3852 }
3853
3854 break;
3855
3856
3857 case 0x81:
3858
3859 uioc->opcode = MBOX_CMD;
3860 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3861
3862 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3863
3864 uioc->xferlen = uioc_mimd.ui.fcs.length;
3865
3866 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3867 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3868
3869 break;
3870
3871 case 0x80:
3872
3873 uioc->opcode = MBOX_CMD;
3874 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3875
3876 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3877
3878 /*
3879 * Choose the xferlen bigger of input and output data
3880 */
3881 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3882 uioc_mimd.outlen : uioc_mimd.inlen;
3883
3884 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3885 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3886
3887 break;
3888
3889 default:
3890 return (-EINVAL);
3891
3892 }
3893
3894 return 0;
3895}
3896
3897/*
3898 * mega_n_to_m()
3899 * @arg - user address
3900 * @mc - mailbox command
3901 *
3902 * Updates the status information to the application, depending on application
3903 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3904 */
3905static int
3906mega_n_to_m(void __user *arg, megacmd_t *mc)
3907{
3908 nitioctl_t __user *uiocp;
3909 megacmd_t __user *umc;
3910 mega_passthru __user *upthru;
3911 struct uioctl_t __user *uioc_mimd;
3912 char signature[8] = {0};
3913
3914 /*
3915 * check is the application conforms to NIT.
3916 */
3917 if( copy_from_user(signature, arg, 7) )
3918 return -EFAULT;
3919
3920 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3921
3922 uiocp = arg;
3923
3924 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3925 return (-EFAULT);
3926
3927 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3928
3929 umc = MBOX_P(uiocp);
3930
3931 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3932 return -EFAULT;
3933
3934 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3935 return (-EFAULT);
3936 }
3937 }
3938 else {
3939 uioc_mimd = arg;
3940
3941 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3942 return (-EFAULT);
3943
3944 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3945
3946 umc = (megacmd_t __user *)uioc_mimd->mbox;
3947
3948 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3949 return (-EFAULT);
3950
3951 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3952 return (-EFAULT);
3953 }
3954 }
3955
3956 return 0;
3957}
3958
3959
3960/*
3961 * MEGARAID 'FW' commands.
3962 */
3963
3964/**
3965 * mega_is_bios_enabled()
3966 * @adapter - pointer to our soft state
3967 *
3968 * issue command to find out if the BIOS is enabled for this controller
3969 */
3970static int
3971mega_is_bios_enabled(adapter_t *adapter)
3972{
3973 unsigned char raw_mbox[sizeof(struct mbox_out)];
3974 mbox_t *mbox;
3975 int ret;
3976
3977 mbox = (mbox_t *)raw_mbox;
3978
3979 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3980
3981 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3982
3983 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3984
3985 raw_mbox[0] = IS_BIOS_ENABLED;
3986 raw_mbox[2] = GET_BIOS;
3987
3988
3989 ret = issue_scb_block(adapter, raw_mbox);
3990
3991 return *(char *)adapter->mega_buffer;
3992}
3993
3994
3995/**
3996 * mega_enum_raid_scsi()
3997 * @adapter - pointer to our soft state
3998 *
3999 * Find out what channels are RAID/SCSI. This information is used to
4000 * differentiate the virtual channels and physical channels and to support
4001 * ROMB feature and non-disk devices.
4002 */
4003static void
4004mega_enum_raid_scsi(adapter_t *adapter)
4005{
4006 unsigned char raw_mbox[sizeof(struct mbox_out)];
4007 mbox_t *mbox;
4008 int i;
4009
4010 mbox = (mbox_t *)raw_mbox;
4011
4012 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4013
4014 /*
4015 * issue command to find out what channels are raid/scsi
4016 */
4017 raw_mbox[0] = CHNL_CLASS;
4018 raw_mbox[2] = GET_CHNL_CLASS;
4019
4020 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4021
4022 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4023
4024 /*
4025 * Non-ROMB firmware fail this command, so all channels
4026 * must be shown RAID
4027 */
4028 adapter->mega_ch_class = 0xFF;
4029
4030 if(!issue_scb_block(adapter, raw_mbox)) {
4031 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4032
4033 }
4034
4035 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4036 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4037 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4038 i);
4039 }
4040 else {
4041 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4042 i);
4043 }
4044 }
4045
4046 return;
4047}
4048
4049
4050/**
4051 * mega_get_boot_drv()
4052 * @adapter - pointer to our soft state
4053 *
4054 * Find out which device is the boot device. Note, any logical drive or any
4055 * phyical device (e.g., a CDROM) can be designated as a boot device.
4056 */
4057static void
4058mega_get_boot_drv(adapter_t *adapter)
4059{
4060 struct private_bios_data *prv_bios_data;
4061 unsigned char raw_mbox[sizeof(struct mbox_out)];
4062 mbox_t *mbox;
4063 u16 cksum = 0;
4064 u8 *cksum_p;
4065 u8 boot_pdrv;
4066 int i;
4067
4068 mbox = (mbox_t *)raw_mbox;
4069
4070 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4071
4072 raw_mbox[0] = BIOS_PVT_DATA;
4073 raw_mbox[2] = GET_BIOS_PVT_DATA;
4074
4075 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4076
4077 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4078
4079 adapter->boot_ldrv_enabled = 0;
4080 adapter->boot_ldrv = 0;
4081
4082 adapter->boot_pdrv_enabled = 0;
4083 adapter->boot_pdrv_ch = 0;
4084 adapter->boot_pdrv_tgt = 0;
4085
4086 if(issue_scb_block(adapter, raw_mbox) == 0) {
4087 prv_bios_data =
4088 (struct private_bios_data *)adapter->mega_buffer;
4089
4090 cksum = 0;
4091 cksum_p = (char *)prv_bios_data;
4092 for (i = 0; i < 14; i++ ) {
4093 cksum += (u16)(*cksum_p++);
4094 }
4095
4096 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4097
4098 /*
4099 * If MSB is set, a physical drive is set as boot
4100 * device
4101 */
4102 if( prv_bios_data->boot_drv & 0x80 ) {
4103 adapter->boot_pdrv_enabled = 1;
4104 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4105 adapter->boot_pdrv_ch = boot_pdrv / 16;
4106 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4107 }
4108 else {
4109 adapter->boot_ldrv_enabled = 1;
4110 adapter->boot_ldrv = prv_bios_data->boot_drv;
4111 }
4112 }
4113 }
4114
4115}
4116
4117/**
4118 * mega_support_random_del()
4119 * @adapter - pointer to our soft state
4120 *
4121 * Find out if this controller supports random deletion and addition of
4122 * logical drives
4123 */
4124static int
4125mega_support_random_del(adapter_t *adapter)
4126{
4127 unsigned char raw_mbox[sizeof(struct mbox_out)];
4128 mbox_t *mbox;
4129 int rval;
4130
4131 mbox = (mbox_t *)raw_mbox;
4132
4133 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4134
4135 /*
4136 * issue command
4137 */
4138 raw_mbox[0] = FC_DEL_LOGDRV;
4139 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4140
4141 rval = issue_scb_block(adapter, raw_mbox);
4142
4143 return !rval;
4144}
4145
4146
4147/**
4148 * mega_support_ext_cdb()
4149 * @adapter - pointer to our soft state
4150 *
4151 * Find out if this firmware support cdblen > 10
4152 */
4153static int
4154mega_support_ext_cdb(adapter_t *adapter)
4155{
4156 unsigned char raw_mbox[sizeof(struct mbox_out)];
4157 mbox_t *mbox;
4158 int rval;
4159
4160 mbox = (mbox_t *)raw_mbox;
4161
4162 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4163 /*
4164 * issue command to find out if controller supports extended CDBs.
4165 */
4166 raw_mbox[0] = 0xA4;
4167 raw_mbox[2] = 0x16;
4168
4169 rval = issue_scb_block(adapter, raw_mbox);
4170
4171 return !rval;
4172}
4173
4174
4175/**
4176 * mega_del_logdrv()
4177 * @adapter - pointer to our soft state
4178 * @logdrv - logical drive to be deleted
4179 *
4180 * Delete the specified logical drive. It is the responsibility of the user
4181 * app to let the OS know about this operation.
4182 */
4183static int
4184mega_del_logdrv(adapter_t *adapter, int logdrv)
4185{
4186 unsigned long flags;
4187 scb_t *scb;
4188 int rval;
4189
4190 /*
4191 * Stop sending commands to the controller, queue them internally.
4192 * When deletion is complete, ISR will flush the queue.
4193 */
4194 atomic_set(&adapter->quiescent, 1);
4195
4196 /*
4197 * Wait till all the issued commands are complete and there are no
4198 * commands in the pending queue
4199 */
4200 while (atomic_read(&adapter->pend_cmds) > 0 ||
4201 !list_empty(&adapter->pending_list))
4202 msleep(1000); /* sleep for 1s */
4203
4204 rval = mega_do_del_logdrv(adapter, logdrv);
4205
4206 spin_lock_irqsave(&adapter->lock, flags);
4207
4208 /*
4209 * If delete operation was successful, add 0x80 to the logical drive
4210 * ids for commands in the pending queue.
4211 */
4212 if (adapter->read_ldidmap) {
4213 struct list_head *pos;
4214 list_for_each(pos, &adapter->pending_list) {
4215 scb = list_entry(pos, scb_t, list);
4216 if (scb->pthru->logdrv < 0x80 )
4217 scb->pthru->logdrv += 0x80;
4218 }
4219 }
4220
4221 atomic_set(&adapter->quiescent, 0);
4222
4223 mega_runpendq(adapter);
4224
4225 spin_unlock_irqrestore(&adapter->lock, flags);
4226
4227 return rval;
4228}
4229
4230
4231static int
4232mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4233{
4234 megacmd_t mc;
4235 int rval;
4236
4237 memset( &mc, 0, sizeof(megacmd_t));
4238
4239 mc.cmd = FC_DEL_LOGDRV;
4240 mc.opcode = OP_DEL_LOGDRV;
4241 mc.subopcode = logdrv;
4242
cb0258a2 4243 rval = mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 4244
4245 /* log this event */
4246 if(rval) {
4247 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4248 return rval;
4249 }
4250
4251 /*
4252 * After deleting first logical drive, the logical drives must be
4253 * addressed by adding 0x80 to the logical drive id.
4254 */
4255 adapter->read_ldidmap = 1;
4256
4257 return rval;
4258}
4259
4260
4261/**
4262 * mega_get_max_sgl()
4263 * @adapter - pointer to our soft state
4264 *
4265 * Find out the maximum number of scatter-gather elements supported by this
4266 * version of the firmware
4267 */
4268static void
4269mega_get_max_sgl(adapter_t *adapter)
4270{
4271 unsigned char raw_mbox[sizeof(struct mbox_out)];
4272 mbox_t *mbox;
4273
4274 mbox = (mbox_t *)raw_mbox;
4275
4276 memset(mbox, 0, sizeof(raw_mbox));
4277
4278 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4279
4280 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4281
4282 raw_mbox[0] = MAIN_MISC_OPCODE;
4283 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4284
4285
4286 if( issue_scb_block(adapter, raw_mbox) ) {
4287 /*
4288 * f/w does not support this command. Choose the default value
4289 */
4290 adapter->sglen = MIN_SGLIST;
4291 }
4292 else {
4293 adapter->sglen = *((char *)adapter->mega_buffer);
4294
4295 /*
4296 * Make sure this is not more than the resources we are
4297 * planning to allocate
4298 */
4299 if ( adapter->sglen > MAX_SGLIST )
4300 adapter->sglen = MAX_SGLIST;
4301 }
4302
4303 return;
4304}
4305
4306
4307/**
4308 * mega_support_cluster()
4309 * @adapter - pointer to our soft state
4310 *
4311 * Find out if this firmware support cluster calls.
4312 */
4313static int
4314mega_support_cluster(adapter_t *adapter)
4315{
4316 unsigned char raw_mbox[sizeof(struct mbox_out)];
4317 mbox_t *mbox;
4318
4319 mbox = (mbox_t *)raw_mbox;
4320
4321 memset(mbox, 0, sizeof(raw_mbox));
4322
4323 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4324
4325 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4326
4327 /*
4328 * Try to get the initiator id. This command will succeed iff the
4329 * clustering is available on this HBA.
4330 */
4331 raw_mbox[0] = MEGA_GET_TARGET_ID;
4332
4333 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4334
4335 /*
4336 * Cluster support available. Get the initiator target id.
4337 * Tell our id to mid-layer too.
4338 */
4339 adapter->this_id = *(u32 *)adapter->mega_buffer;
4340 adapter->host->this_id = adapter->this_id;
4341
4342 return 1;
4343 }
4344
4345 return 0;
4346}
4347
84a3c97b 4348#ifdef CONFIG_PROC_FS
1da177e4
LT		 4349/**
4350 * mega_adapinq()
4351 * @adapter - pointer to our soft state
4352 * @dma_handle - DMA address of the buffer
4353 *
4354 * Issue internal comamnds while interrupts are available.
4355 * We only issue direct mailbox commands from within the driver. ioctl()
4356 * interface using these routines can issue passthru commands.
4357 */
4358static int
4359mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4360{
4361 megacmd_t mc;
4362
4363 memset(&mc, 0, sizeof(megacmd_t));
4364
4365 if( adapter->flag & BOARD_40LD ) {
4366 mc.cmd = FC_NEW_CONFIG;
4367 mc.opcode = NC_SUBOP_ENQUIRY3;
4368 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4369 }
4370 else {
4371 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4372 }
4373
4374 mc.xferaddr = (u32)dma_handle;
4375
cb0258a2 4376 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 4377 return -1;
4378 }
4379
4380 return 0;
4381}
4382
4383
4384/** mega_internal_dev_inquiry()
4385 * @adapter - pointer to our soft state
4386 * @ch - channel for this device
4387 * @tgt - ID of this device
4388 * @buf_dma_handle - DMA address of the buffer
4389 *
4390 * Issue the scsi inquiry for the specified device.
4391 */
4392static int
4393mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4394 dma_addr_t buf_dma_handle)
4395{
4396 mega_passthru *pthru;
4397 dma_addr_t pthru_dma_handle;
4398 megacmd_t mc;
4399 int rval;
4400 struct pci_dev *pdev;
4401
4402
4403 /*
4404 * For all internal commands, the buffer must be allocated in <4GB
4405 * address range
4406 */
4407 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4408
4409 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4410 &pthru_dma_handle);
4411
4412 if( pthru == NULL ) {
4413 free_local_pdev(pdev);
4414 return -1;
4415 }
4416
4417 pthru->timeout = 2;
4418 pthru->ars = 1;
4419 pthru->reqsenselen = 14;
4420 pthru->islogical = 0;
4421
4422 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4423
4424 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4425
4426 pthru->cdblen = 6;
4427
4428 pthru->cdb[0] = INQUIRY;
4429 pthru->cdb[1] = 0;
4430 pthru->cdb[2] = 0;
4431 pthru->cdb[3] = 0;
4432 pthru->cdb[4] = 255;
4433 pthru->cdb[5] = 0;
4434
4435
4436 pthru->dataxferaddr = (u32)buf_dma_handle;
4437 pthru->dataxferlen = 256;
4438
4439 memset(&mc, 0, sizeof(megacmd_t));
4440
4441 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4442 mc.xferaddr = (u32)pthru_dma_handle;
4443
cb0258a2 4444 rval = mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 4445
4446 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4447 pthru_dma_handle);
4448
4449 free_local_pdev(pdev);
4450
4451 return rval;
4452}
84a3c97b 4453#endif
1da177e4
LT		 4454
4455/**
4456 * mega_internal_command()
4457 * @adapter - pointer to our soft state
1da177e4
LT		 4458 * @mc - the mailbox command
4459 * @pthru - Passthru structure for DCDB commands
4460 *
4461 * Issue the internal commands in interrupt mode.
4462 * The last argument is the address of the passthru structure if the command
4463 * to be fired is a passthru command
4464 *
4465 * lockscope specifies whether the caller has already acquired the lock. Of
4466 * course, the caller must know which lock we are talking about.
4467 *
4468 * Note: parameter 'pthru' is null for non-passthru commands.
4469 */
4470static int
cb0258a2 4471mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
1da177e4
LT		 4472{
4473 Scsi_Cmnd *scmd;
4474 struct scsi_device *sdev;
1da177e4
LT		 4475 scb_t *scb;
4476 int rval;
4477
4478 /*
4479 * The internal commands share one command id and hence are
4480 * serialized. This is so because we want to reserve maximum number of
4481 * available command ids for the I/O commands.
4482 */
0b950672 4483 mutex_lock(&adapter->int_mtx);
1da177e4
LT		 4484
4485 scb = &adapter->int_scb;
4486 memset(scb, 0, sizeof(scb_t));
4487
4488 scmd = &adapter->int_scmd;
4489 memset(scmd, 0, sizeof(Scsi_Cmnd));
4490
4491 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4492 memset(sdev, 0, sizeof(struct scsi_device));
4493 scmd->device = sdev;
4494
4495 scmd->device->host = adapter->host;
5d5ff44f 4496 scmd->request_buffer = (void *)scb;
1da177e4
LT		 4497 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4498
4499 scb->state |= SCB_ACTIVE;
4500 scb->cmd = scmd;
4501
4502 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4503
4504 /*
4505 * Is it a passthru command
4506 */
4507 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4508
4509 scb->pthru = pthru;
4510 }
4511
4512 scb->idx = CMDID_INT_CMDS;
4513
1da177e4
LT		 4514 megaraid_queue(scmd, mega_internal_done);
4515
8d115f84 4516 wait_for_completion(&adapter->int_waitq);
1da177e4
LT		 4517
4518 rval = scmd->result;
4519 mc->status = scmd->result;
4520 kfree(sdev);
4521
4522 /*
4523 * Print a debug message for all failed commands. Applications can use
4524 * this information.
4525 */
4526 if( scmd->result && trace_level ) {
4527 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4528 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4529 }
4530
0b950672 4531 mutex_unlock(&adapter->int_mtx);
1da177e4
LT		 4532
4533 return rval;
4534}
4535
4536
4537/**
4538 * mega_internal_done()
4539 * @scmd - internal scsi command
4540 *
4541 * Callback routine for internal commands.
4542 */
4543static void
4544mega_internal_done(Scsi_Cmnd *scmd)
4545{
4546 adapter_t *adapter;
4547
4548 adapter = (adapter_t *)scmd->device->host->hostdata;
4549
8d115f84 4550 complete(&adapter->int_waitq);
1da177e4
LT		 4551
4552}
4553
4554
4555static struct scsi_host_template megaraid_template = {
4556 .module = THIS_MODULE,
4557 .name = "MegaRAID",
3492b328 4558 .proc_name = "megaraid_legacy",
1da177e4
LT		 4559 .info = megaraid_info,
4560 .queuecommand = megaraid_queue,
4561 .bios_param = megaraid_biosparam,
4562 .max_sectors = MAX_SECTORS_PER_IO,
4563 .can_queue = MAX_COMMANDS,
4564 .this_id = DEFAULT_INITIATOR_ID,
4565 .sg_tablesize = MAX_SGLIST,
4566 .cmd_per_lun = DEF_CMD_PER_LUN,
4567 .use_clustering = ENABLE_CLUSTERING,
4568 .eh_abort_handler = megaraid_abort,
4569 .eh_device_reset_handler = megaraid_reset,
4570 .eh_bus_reset_handler = megaraid_reset,
4571 .eh_host_reset_handler = megaraid_reset,
4572};
4573
4574static int __devinit
4575megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4576{
4577 struct Scsi_Host *host;
4578 adapter_t *adapter;
4579 unsigned long mega_baseport, tbase, flag = 0;
4580 u16 subsysid, subsysvid;
4581 u8 pci_bus, pci_dev_func;
4582 int irq, i, j;
4583 int error = -ENODEV;
4584
4585 if (pci_enable_device(pdev))
4586 goto out;
4587 pci_set_master(pdev);
4588
4589 pci_bus = pdev->bus->number;
4590 pci_dev_func = pdev->devfn;
4591
4592 /*
4593 * The megaraid3 stuff reports the ID of the Intel part which is not
4594 * remotely specific to the megaraid
4595 */
4596 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4597 u16 magic;
4598 /*
4599 * Don't fall over the Compaq management cards using the same
4600 * PCI identifier
4601 */
4602 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4603 pdev->subsystem_device == 0xC000)
4604 return -ENODEV;
4605 /* Now check the magic signature byte */
4606 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4607 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4608 return -ENODEV;
4609 /* Ok it is probably a megaraid */
4610 }
4611
4612 /*
4613 * For these vendor and device ids, signature offsets are not
4614 * valid and 64 bit is implicit
4615 */
4616 if (id->driver_data & BOARD_64BIT)
4617 flag |= BOARD_64BIT;
4618 else {
4619 u32 magic64;
4620
4621 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4622 if (magic64 == HBA_SIGNATURE_64BIT)
4623 flag |= BOARD_64BIT;
4624 }
4625
4626 subsysvid = pdev->subsystem_vendor;
4627 subsysid = pdev->subsystem_device;
4628
4629 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4630 id->vendor, id->device, pci_bus);
4631
4632 printk("slot %d:func %d\n",
4633 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4634
4635 /* Read the base port and IRQ from PCI */
4636 mega_baseport = pci_resource_start(pdev, 0);
4637 irq = pdev->irq;
4638
4639 tbase = mega_baseport;
4640 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4641 flag |= BOARD_MEMMAP;
4642
4643 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4644 printk(KERN_WARNING "megaraid: mem region busy!\n");
4645 goto out_disable_device;
4646 }
4647
4648 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4649 if (!mega_baseport) {
4650 printk(KERN_WARNING
4651 "megaraid: could not map hba memory\n");
4652 goto out_release_region;
4653 }
4654 } else {
4655 flag |= BOARD_IOMAP;
4656 mega_baseport += 0x10;
4657
4658 if (!request_region(mega_baseport, 16, "megaraid"))
4659 goto out_disable_device;
4660 }
4661
4662 /* Initialize SCSI Host structure */
4663 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4664 if (!host)
4665 goto out_iounmap;
4666
4667 adapter = (adapter_t *)host->hostdata;
4668 memset(adapter, 0, sizeof(adapter_t));
4669
4670 printk(KERN_NOTICE
4671 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4672 host->host_no, mega_baseport, irq);
4673
4674 adapter->base = mega_baseport;
00769ec4
JG		 4675 if (flag & BOARD_MEMMAP)
4676 adapter->mmio_base = (void __iomem *) mega_baseport;
1da177e4
LT		 4677
4678 INIT_LIST_HEAD(&adapter->free_list);
4679 INIT_LIST_HEAD(&adapter->pending_list);
4680 INIT_LIST_HEAD(&adapter->completed_list);
4681
4682 adapter->flag = flag;
4683 spin_lock_init(&adapter->lock);
1da177e4
LT		 4684
4685 host->cmd_per_lun = max_cmd_per_lun;
4686 host->max_sectors = max_sectors_per_io;
4687
4688 adapter->dev = pdev;
4689 adapter->host = host;
4690
4691 adapter->host->irq = irq;
4692
4693 if (flag & BOARD_MEMMAP)
4694 adapter->host->base = tbase;
4695 else {
4696 adapter->host->io_port = tbase;
4697 adapter->host->n_io_port = 16;
4698 }
4699
4700 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4701
4702 /*
4703 * Allocate buffer to issue internal commands.
4704 */
4705 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4706 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4707 if (!adapter->mega_buffer) {
4708 printk(KERN_WARNING "megaraid: out of RAM.\n");
4709 goto out_host_put;
4710 }
4711
4712 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4713 if (!adapter->scb_list) {
4714 printk(KERN_WARNING "megaraid: out of RAM.\n");
4715 goto out_free_cmd_buffer;
4716 }
4717
4718 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4719 megaraid_isr_memmapped : megaraid_isr_iomapped,
1d6f359a 4720 IRQF_SHARED, "megaraid", adapter)) {
1da177e4
LT		 4721 printk(KERN_WARNING
4722 "megaraid: Couldn't register IRQ %d!\n", irq);
4723 goto out_free_scb_list;
4724 }
4725
4726 if (mega_setup_mailbox(adapter))
4727 goto out_free_irq;
4728
4729 if (mega_query_adapter(adapter))
4730 goto out_free_mbox;
4731
4732 /*
4733 * Have checks for some buggy f/w
4734 */
4735 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4736 /*
4737 * Which firmware
4738 */
4739 if (!strcmp(adapter->fw_version, "3.00") ||
4740 !strcmp(adapter->fw_version, "3.01")) {
4741
4742 printk( KERN_WARNING
4743 "megaraid: Your card is a Dell PERC "
4744 "2/SC RAID controller with "
4745 "firmware\nmegaraid: 3.00 or 3.01. "
4746 "This driver is known to have "
4747 "corruption issues\nmegaraid: with "
4748 "those firmware versions on this "
4749 "specific card. In order\nmegaraid: "
4750 "to protect your data, please upgrade "
4751 "your firmware to version\nmegaraid: "
4752 "3.10 or later, available from the "
4753 "Dell Technical Support web\n"
4754 "megaraid: site at\nhttp://support."
4755 "dell.com/us/en/filelib/download/"
4756 "index.asp?fileid=2940\n"
4757 );
4758 }
4759 }
4760
4761 /*
4762 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4763 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4764 * support, since this firmware cannot handle 64 bit
4765 * addressing
4766 */
4767 if ((subsysvid == HP_SUBSYS_VID) &&
4768 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4769 /*
4770 * which firmware
4771 */
4772 if (!strcmp(adapter->fw_version, "H01.07") ||
4773 !strcmp(adapter->fw_version, "H01.08") ||
4774 !strcmp(adapter->fw_version, "H01.09") ) {
4775 printk(KERN_WARNING
4776 "megaraid: Firmware H.01.07, "
4777 "H.01.08, and H.01.09 on 1M/2M "
4778 "controllers\n"
4779 "megaraid: do not support 64 bit "
4780 "addressing.\nmegaraid: DISABLING "
4781 "64 bit support.\n");
4782 adapter->flag &= ~BOARD_64BIT;
4783 }
4784 }
4785
4786 if (mega_is_bios_enabled(adapter))
4787 mega_hbas[hba_count].is_bios_enabled = 1;
4788 mega_hbas[hba_count].hostdata_addr = adapter;
4789
4790 /*
4791 * Find out which channel is raid and which is scsi. This is
4792 * for ROMB support.
4793 */
4794 mega_enum_raid_scsi(adapter);
4795
4796 /*
4797 * Find out if a logical drive is set as the boot drive. If
4798 * there is one, will make that as the first logical drive.
4799 * ROMB: Do we have to boot from a physical drive. Then all
4800 * the physical drives would appear before the logical disks.
4801 * Else, all the physical drives would be exported to the mid
4802 * layer after logical drives.
4803 */
4804 mega_get_boot_drv(adapter);
4805
4806 if (adapter->boot_pdrv_enabled) {
4807 j = adapter->product_info.nchannels;
4808 for( i = 0; i < j; i++ )
4809 adapter->logdrv_chan[i] = 0;
4810 for( i = j; i < NVIRT_CHAN + j; i++ )
4811 adapter->logdrv_chan[i] = 1;
4812 } else {
4813 for (i = 0; i < NVIRT_CHAN; i++)
4814 adapter->logdrv_chan[i] = 1;
4815 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4816 adapter->logdrv_chan[i] = 0;
4817 adapter->mega_ch_class <<= NVIRT_CHAN;
4818 }
4819
4820 /*
4821 * Do we support random deletion and addition of logical
4822 * drives
4823 */
4824 adapter->read_ldidmap = 0; /* set it after first logdrv
4825 delete cmd */
4826 adapter->support_random_del = mega_support_random_del(adapter);
4827
4828 /* Initialize SCBs */
4829 if (mega_init_scb(adapter))
4830 goto out_free_mbox;
4831
4832 /*
4833 * Reset the pending commands counter
4834 */
4835 atomic_set(&adapter->pend_cmds, 0);
4836
4837 /*
4838 * Reset the adapter quiescent flag
4839 */
4840 atomic_set(&adapter->quiescent, 0);
4841
4842 hba_soft_state[hba_count] = adapter;
4843
4844 /*
4845 * Fill in the structure which needs to be passed back to the
4846 * application when it does an ioctl() for controller related
4847 * information.
4848 */
4849 i = hba_count;
4850
4851 mcontroller[i].base = mega_baseport;
4852 mcontroller[i].irq = irq;
4853 mcontroller[i].numldrv = adapter->numldrv;
4854 mcontroller[i].pcibus = pci_bus;
4855 mcontroller[i].pcidev = id->device;
4856 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4857 mcontroller[i].pciid = -1;
4858 mcontroller[i].pcivendor = id->vendor;
4859 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4860 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4861
4862
4863 /* Set the Mode of addressing to 64 bit if we can */
4864 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
910638ae 4865 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1da177e4
LT		 4866 adapter->has_64bit_addr = 1;
4867 } else {
910638ae 4868 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1da177e4
LT		 4869 adapter->has_64bit_addr = 0;
4870 }
4871
0b950672 4872 mutex_init(&adapter->int_mtx);
8d115f84 4873 init_completion(&adapter->int_waitq);
1da177e4
LT		 4874
4875 adapter->this_id = DEFAULT_INITIATOR_ID;
4876 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4877
4878#if MEGA_HAVE_CLUSTERING
4879 /*
4880 * Is cluster support enabled on this controller
4881 * Note: In a cluster the HBAs ( the initiators ) will have
4882 * different target IDs and we cannot assume it to be 7. Call
4883 * to mega_support_cluster() will get the target ids also if
4884 * the cluster support is available
4885 */
4886 adapter->has_cluster = mega_support_cluster(adapter);
4887 if (adapter->has_cluster) {
4888 printk(KERN_NOTICE
4889 "megaraid: Cluster driver, initiator id:%d\n",
4890 adapter->this_id);
4891 }
4892#endif
4893
4894 pci_set_drvdata(pdev, host);
4895
4896 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4897
4898 error = scsi_add_host(host, &pdev->dev);
4899 if (error)
4900 goto out_free_mbox;
4901
4902 scsi_scan_host(host);
4903 hba_count++;
4904 return 0;
4905
4906 out_free_mbox:
4907 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4908 adapter->una_mbox64, adapter->una_mbox64_dma);
4909 out_free_irq:
4910 free_irq(adapter->host->irq, adapter);
4911 out_free_scb_list:
4912 kfree(adapter->scb_list);
4913 out_free_cmd_buffer:
4914 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4915 adapter->mega_buffer, adapter->buf_dma_handle);
4916 out_host_put:
4917 scsi_host_put(host);
4918 out_iounmap:
4919 if (flag & BOARD_MEMMAP)
4920 iounmap((void *)mega_baseport);
4921 out_release_region:
4922 if (flag & BOARD_MEMMAP)
4923 release_mem_region(tbase, 128);
4924 else
4925 release_region(mega_baseport, 16);
4926 out_disable_device:
4927 pci_disable_device(pdev);
4928 out:
4929 return error;
4930}
4931
4932static void
4933__megaraid_shutdown(adapter_t *adapter)
4934{
4935 u_char raw_mbox[sizeof(struct mbox_out)];
4936 mbox_t *mbox = (mbox_t *)raw_mbox;
4937 int i;
4938
4939 /* Flush adapter cache */
4940 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4941 raw_mbox[0] = FLUSH_ADAPTER;
4942
4943 free_irq(adapter->host->irq, adapter);
4944
4945 /* Issue a blocking (interrupts disabled) command to the card */
4946 issue_scb_block(adapter, raw_mbox);
4947
4948 /* Flush disks cache */
4949 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4950 raw_mbox[0] = FLUSH_SYSTEM;
4951
4952 /* Issue a blocking (interrupts disabled) command to the card */
4953 issue_scb_block(adapter, raw_mbox);
4954
4955 if (atomic_read(&adapter->pend_cmds) > 0)
4956 printk(KERN_WARNING "megaraid: pending commands!!\n");
4957
4958 /*
4959 * Have a delibrate delay to make sure all the caches are
4960 * actually flushed.
4961 */
4962 for (i = 0; i <= 10; i++)
4963 mdelay(1000);
4964}
4965
4966static void
4967megaraid_remove_one(struct pci_dev *pdev)
4968{
4969 struct Scsi_Host *host = pci_get_drvdata(pdev);
4970 adapter_t *adapter = (adapter_t *)host->hostdata;
1da177e4
LT		 4971
4972 scsi_remove_host(host);
4973
4974 __megaraid_shutdown(adapter);
4975
4976 /* Free our resources */
4977 if (adapter->flag & BOARD_MEMMAP) {
4978 iounmap((void *)adapter->base);
4979 release_mem_region(adapter->host->base, 128);
4980 } else
4981 release_region(adapter->base, 16);
4982
4983 mega_free_sgl(adapter);
4984
4985#ifdef CONFIG_PROC_FS
4986 if (adapter->controller_proc_dir_entry) {
4987 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4988 remove_proc_entry("config",
4989 adapter->controller_proc_dir_entry);
4990 remove_proc_entry("mailbox",
4991 adapter->controller_proc_dir_entry);
4992#if MEGA_HAVE_ENH_PROC
4993 remove_proc_entry("rebuild-rate",
4994 adapter->controller_proc_dir_entry);
4995 remove_proc_entry("battery-status",
4996 adapter->controller_proc_dir_entry);
4997
4998 remove_proc_entry("diskdrives-ch0",
4999 adapter->controller_proc_dir_entry);
5000 remove_proc_entry("diskdrives-ch1",
5001 adapter->controller_proc_dir_entry);
5002 remove_proc_entry("diskdrives-ch2",
5003 adapter->controller_proc_dir_entry);
5004 remove_proc_entry("diskdrives-ch3",
5005 adapter->controller_proc_dir_entry);
5006
5007 remove_proc_entry("raiddrives-0-9",
5008 adapter->controller_proc_dir_entry);
5009 remove_proc_entry("raiddrives-10-19",
5010 adapter->controller_proc_dir_entry);
5011 remove_proc_entry("raiddrives-20-29",
5012 adapter->controller_proc_dir_entry);
5013 remove_proc_entry("raiddrives-30-39",
5014 adapter->controller_proc_dir_entry);
5015#endif
84a3c97b 5016 {
5017 char buf[12] = { 0 };
5018 sprintf(buf, "hba%d", adapter->host->host_no);
5019 remove_proc_entry(buf, mega_proc_dir_entry);
5020 }
1da177e4
LT		 5021 }
5022#endif
5023
5024 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5025 adapter->mega_buffer, adapter->buf_dma_handle);
5026 kfree(adapter->scb_list);
5027 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5028 adapter->una_mbox64, adapter->una_mbox64_dma);
5029
5030 scsi_host_put(host);
5031 pci_disable_device(pdev);
5032
5033 hba_count--;
5034}
5035
5036static void
d18c3db5 5037megaraid_shutdown(struct pci_dev *pdev)
1da177e4 5038{
d18c3db5 5039 struct Scsi_Host *host = pci_get_drvdata(pdev);
1da177e4
LT		 5040 adapter_t *adapter = (adapter_t *)host->hostdata;
5041
5042 __megaraid_shutdown(adapter);
5043}
5044
5045static struct pci_device_id megaraid_pci_tbl[] = {
1da177e4
LT		 5046 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5047 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5048 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5049 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 5050 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5051 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 5052 {0,}
5053};
5054MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5055
5056static struct pci_driver megaraid_pci_driver = {
3542adcb 5057 .name = "megaraid_legacy",
1da177e4
LT		 5058 .id_table = megaraid_pci_tbl,
5059 .probe = megaraid_probe_one,
5060 .remove = __devexit_p(megaraid_remove_one),
d18c3db5 5061 .shutdown = megaraid_shutdown,
1da177e4
LT		 5062};
5063
5064static int __init megaraid_init(void)
5065{
5066 int error;
5067
5068 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5069 max_cmd_per_lun = MAX_CMD_PER_LUN;
5070 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5071 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5072
5073#ifdef CONFIG_PROC_FS
5074 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5075 if (!mega_proc_dir_entry) {
5076 printk(KERN_WARNING
5077 "megaraid: failed to create megaraid root\n");
5078 }
5079#endif
4520b008 5080 error = pci_register_driver(&megaraid_pci_driver);
1da177e4
LT		 5081 if (error) {
5082#ifdef CONFIG_PROC_FS
5083 remove_proc_entry("megaraid", &proc_root);
5084#endif
5085 return error;
5086 }
5087
5088 /*
5089 * Register the driver as a character device, for applications
5090 * to access it for ioctls.
5091 * First argument (major) to register_chrdev implies a dynamic
5092 * major number allocation.
5093 */
3492b328 5094 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
1da177e4
LT		 5095 if (!major) {
5096 printk(KERN_WARNING
5097 "megaraid: failed to register char device\n");
5098 }
5099
5100 return 0;
5101}
5102
5103static void __exit megaraid_exit(void)
5104{
5105 /*
5106 * Unregister the character device interface to the driver.
5107 */
3492b328 5108 unregister_chrdev(major, "megadev_legacy");
1da177e4
LT		 5109
5110 pci_unregister_driver(&megaraid_pci_driver);
5111
5112#ifdef CONFIG_PROC_FS
5113 remove_proc_entry("megaraid", &proc_root);
5114#endif
5115}
5116
5117module_init(megaraid_init);
5118module_exit(megaraid_exit);
5119
5120/* vi: set ts=8 sw=8 tw=78: */
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