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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>
c45d15d2 49#include <linux/mutex.h>
5a0e3ad6 50#include <linux/slab.h>
1da177e4
LT		 51#include <scsi/scsicam.h>
52
53#include "scsi.h"
54#include <scsi/scsi_host.h>
55
56#include "megaraid.h"
57
3492b328 58#define MEGARAID_MODULE_VERSION "2.00.4"
1da177e4 59
3492b328
JS		 60MODULE_AUTHOR ("sju@lsil.com");
61MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
1da177e4
LT		 62MODULE_LICENSE ("GPL");
63MODULE_VERSION(MEGARAID_MODULE_VERSION);
64
c45d15d2 65static DEFINE_MUTEX(megadev_mutex);
1da177e4
LT		 66static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
67module_param(max_cmd_per_lun, uint, 0);
68MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
69
70static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
71module_param(max_sectors_per_io, ushort, 0);
72MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
73
74
75static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
76module_param(max_mbox_busy_wait, ushort, 0);
77MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
78
00769ec4
JG		 79#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
80#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
81#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
82#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
1da177e4
LT		 83
84/*
85 * Global variables
86 */
87
88static int hba_count;
89static adapter_t *hba_soft_state[MAX_CONTROLLERS];
90static struct proc_dir_entry *mega_proc_dir_entry;
91
92/* For controller re-ordering */
93static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
94
f4927c45
AB		 95static long
96megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
97
1da177e4
LT		 98/*
99 * The File Operations structure for the serial/ioctl interface of the driver
100 */
00977a59 101static const struct file_operations megadev_fops = {
1da177e4 102 .owner = THIS_MODULE,
f4927c45 103 .unlocked_ioctl = megadev_unlocked_ioctl,
1da177e4 104 .open = megadev_open,
6038f373 105 .llseek = noop_llseek,
1da177e4
LT		 106};
107
108/*
109 * Array to structures for storing the information about the controllers. This
110 * information is sent to the user level applications, when they do an ioctl
111 * for this information.
112 */
113static struct mcontroller mcontroller[MAX_CONTROLLERS];
114
115/* The current driver version */
116static u32 driver_ver = 0x02000000;
117
118/* major number used by the device for character interface */
119static int major;
120
121#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
122
123
124/*
125 * Debug variable to print some diagnostic messages
126 */
127static int trace_level;
128
129/**
130 * mega_setup_mailbox()
131 * @adapter - pointer to our soft state
132 *
133 * Allocates a 8 byte aligned memory for the handshake mailbox.
134 */
135static int
136mega_setup_mailbox(adapter_t *adapter)
137{
138 unsigned long align;
139
140 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
141 sizeof(mbox64_t), &adapter->una_mbox64_dma);
142
143 if( !adapter->una_mbox64 ) return -1;
144
145 adapter->mbox = &adapter->una_mbox64->mbox;
146
147 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
148 (~0UL ^ 0xFUL));
149
150 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
151
152 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
153
154 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
155
156 /*
157 * Register the mailbox if the controller is an io-mapped controller
158 */
159 if( adapter->flag & BOARD_IOMAP ) {
160
7d1abbe8 161 outb(adapter->mbox_dma & 0xFF,
1da177e4
LT		 162 adapter->host->io_port + MBOX_PORT0);
163
7d1abbe8 164 outb((adapter->mbox_dma >> 8) & 0xFF,
1da177e4
LT		 165 adapter->host->io_port + MBOX_PORT1);
166
7d1abbe8 167 outb((adapter->mbox_dma >> 16) & 0xFF,
1da177e4
LT		 168 adapter->host->io_port + MBOX_PORT2);
169
7d1abbe8 170 outb((adapter->mbox_dma >> 24) & 0xFF,
1da177e4
LT		 171 adapter->host->io_port + MBOX_PORT3);
172
7d1abbe8 173 outb(ENABLE_MBOX_BYTE,
1da177e4
LT		 174 adapter->host->io_port + ENABLE_MBOX_REGION);
175
176 irq_ack(adapter);
177
178 irq_enable(adapter);
179 }
180
181 return 0;
182}
183
184
185/*
186 * mega_query_adapter()
187 * @adapter - pointer to our soft state
188 *
189 * Issue the adapter inquiry commands to the controller and find out
190 * information and parameter about the devices attached
191 */
192static int
193mega_query_adapter(adapter_t *adapter)
194{
195 dma_addr_t prod_info_dma_handle;
196 mega_inquiry3 *inquiry3;
197 u8 raw_mbox[sizeof(struct mbox_out)];
198 mbox_t *mbox;
199 int retval;
200
201 /* Initialize adapter inquiry mailbox */
202
203 mbox = (mbox_t *)raw_mbox;
204
205 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
206 memset(&mbox->m_out, 0, sizeof(raw_mbox));
207
208 /*
209 * Try to issue Inquiry3 command
210 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
211 * update enquiry3 structure
212 */
213 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
214
215 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
216
217 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
218 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
219 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
220
221 /* Issue a blocking command to the card */
222 if ((retval = issue_scb_block(adapter, raw_mbox))) {
223 /* the adapter does not support 40ld */
224
225 mraid_ext_inquiry *ext_inq;
226 mraid_inquiry *inq;
227 dma_addr_t dma_handle;
228
229 ext_inq = pci_alloc_consistent(adapter->dev,
230 sizeof(mraid_ext_inquiry), &dma_handle);
231
232 if( ext_inq == NULL ) return -1;
233
234 inq = &ext_inq->raid_inq;
235
236 mbox->m_out.xferaddr = (u32)dma_handle;
237
238 /*issue old 0x04 command to adapter */
239 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
240
241 issue_scb_block(adapter, raw_mbox);
242
243 /*
244 * update Enquiry3 and ProductInfo structures with
245 * mraid_inquiry structure
246 */
247 mega_8_to_40ld(inq, inquiry3,
248 (mega_product_info *)&adapter->product_info);
249
250 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
251 ext_inq, dma_handle);
252
253 } else { /*adapter supports 40ld */
254 adapter->flag |= BOARD_40LD;
255
256 /*
257 * get product_info, which is static information and will be
258 * unchanged
259 */
260 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
261 &adapter->product_info,
262 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
263
264 mbox->m_out.xferaddr = prod_info_dma_handle;
265
266 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
267 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
268
269 if ((retval = issue_scb_block(adapter, raw_mbox)))
270 printk(KERN_WARNING
271 "megaraid: Product_info cmd failed with error: %d\n",
272 retval);
273
274 pci_unmap_single(adapter->dev, prod_info_dma_handle,
275 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
276 }
277
278
279 /*
280 * kernel scans the channels from 0 to <= max_channel
281 */
282 adapter->host->max_channel =
283 adapter->product_info.nchannels + NVIRT_CHAN -1;
284
285 adapter->host->max_id = 16; /* max targets per channel */
286
287 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
288
289 adapter->host->cmd_per_lun = max_cmd_per_lun;
290
291 adapter->numldrv = inquiry3->num_ldrv;
292
293 adapter->max_cmds = adapter->product_info.max_commands;
294
295 if(adapter->max_cmds > MAX_COMMANDS)
296 adapter->max_cmds = MAX_COMMANDS;
297
298 adapter->host->can_queue = adapter->max_cmds - 1;
299
300 /*
301 * Get the maximum number of scatter-gather elements supported by this
302 * firmware
303 */
304 mega_get_max_sgl(adapter);
305
306 adapter->host->sg_tablesize = adapter->sglen;
307
308
309 /* use HP firmware and bios version encoding */
310 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
311 sprintf (adapter->fw_version, "%c%d%d.%d%d",
312 adapter->product_info.fw_version[2],
313 adapter->product_info.fw_version[1] >> 8,
314 adapter->product_info.fw_version[1] & 0x0f,
315 adapter->product_info.fw_version[0] >> 8,
316 adapter->product_info.fw_version[0] & 0x0f);
317 sprintf (adapter->bios_version, "%c%d%d.%d%d",
318 adapter->product_info.bios_version[2],
319 adapter->product_info.bios_version[1] >> 8,
320 adapter->product_info.bios_version[1] & 0x0f,
321 adapter->product_info.bios_version[0] >> 8,
322 adapter->product_info.bios_version[0] & 0x0f);
323 } else {
324 memcpy(adapter->fw_version,
325 (char *)adapter->product_info.fw_version, 4);
326 adapter->fw_version[4] = 0;
327
328 memcpy(adapter->bios_version,
329 (char *)adapter->product_info.bios_version, 4);
330
331 adapter->bios_version[4] = 0;
332 }
333
334 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
335 adapter->fw_version, adapter->bios_version, adapter->numldrv);
336
337 /*
338 * Do we support extended (>10 bytes) cdbs
339 */
340 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
341 if (adapter->support_ext_cdb)
342 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
343
344
345 return 0;
346}
347
348/**
349 * mega_runpendq()
350 * @adapter - pointer to our soft state
351 *
352 * Runs through the list of pending requests.
353 */
354static inline void
355mega_runpendq(adapter_t *adapter)
356{
357 if(!list_empty(&adapter->pending_list))
358 __mega_runpendq(adapter);
359}
360
361/*
362 * megaraid_queue()
363 * @scmd - Issue this scsi command
364 * @done - the callback hook into the scsi mid-layer
365 *
366 * The command queuing entry point for the mid-layer.
367 */
368static int
369megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
370{
371 adapter_t *adapter;
372 scb_t *scb;
373 int busy=0;
cb0258a2 374 unsigned long flags;
1da177e4
LT		 375
376 adapter = (adapter_t *)scmd->device->host->hostdata;
377
378 scmd->scsi_done = done;
379
380
381 /*
382 * Allocate and build a SCB request
383 * busy flag will be set if mega_build_cmd() command could not
384 * allocate scb. We will return non-zero status in that case.
385 * NOTE: scb can be null even though certain commands completed
386 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
387 * return 0 in that case.
388 */
389
cb0258a2 390 spin_lock_irqsave(&adapter->lock, flags);
1da177e4 391 scb = mega_build_cmd(adapter, scmd, &busy);
238f9b06
CH		 392 if (!scb)
393 goto out;
1da177e4 394
238f9b06
CH		 395 scb->state |= SCB_PENDQ;
396 list_add_tail(&scb->list, &adapter->pending_list);
1da177e4 397
238f9b06
CH		 398 /*
399 * Check if the HBA is in quiescent state, e.g., during a
400 * delete logical drive opertion. If it is, don't run
401 * the pending_list.
402 */
403 if (atomic_read(&adapter->quiescent) == 0)
404 mega_runpendq(adapter);
1da177e4 405
238f9b06
CH		 406 busy = 0;
407 out:
408 spin_unlock_irqrestore(&adapter->lock, flags);
1da177e4
LT		 409 return busy;
410}
411
412/**
413 * mega_allocate_scb()
414 * @adapter - pointer to our soft state
415 * @cmd - scsi command from the mid-layer
416 *
417 * Allocate a SCB structure. This is the central structure for controller
418 * commands.
419 */
420static inline scb_t *
421mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
422{
423 struct list_head *head = &adapter->free_list;
424 scb_t *scb;
425
426 /* Unlink command from Free List */
427 if( !list_empty(head) ) {
428
429 scb = list_entry(head->next, scb_t, list);
430
431 list_del_init(head->next);
432
433 scb->state = SCB_ACTIVE;
434 scb->cmd = cmd;
435 scb->dma_type = MEGA_DMA_TYPE_NONE;
436
437 return scb;
438 }
439
440 return NULL;
441}
442
443/**
444 * mega_get_ldrv_num()
445 * @adapter - pointer to our soft state
446 * @cmd - scsi mid layer command
447 * @channel - channel on the controller
448 *
449 * Calculate the logical drive number based on the information in scsi command
450 * and the channel number.
451 */
452static inline int
453mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
454{
455 int tgt;
456 int ldrv_num;
457
458 tgt = cmd->device->id;
459
460 if ( tgt > adapter->this_id )
461 tgt--; /* we do not get inquires for initiator id */
462
463 ldrv_num = (channel * 15) + tgt;
464
465
466 /*
467 * If we have a logical drive with boot enabled, project it first
468 */
469 if( adapter->boot_ldrv_enabled ) {
470 if( ldrv_num == 0 ) {
471 ldrv_num = adapter->boot_ldrv;
472 }
473 else {
474 if( ldrv_num <= adapter->boot_ldrv ) {
475 ldrv_num--;
476 }
477 }
478 }
479
480 /*
481 * If "delete logical drive" feature is enabled on this controller.
482 * Do only if at least one delete logical drive operation was done.
483 *
484 * Also, after logical drive deletion, instead of logical drive number,
485 * the value returned should be 0x80+logical drive id.
486 *
487 * These is valid only for IO commands.
488 */
489
490 if (adapter->support_random_del && adapter->read_ldidmap )
491 switch (cmd->cmnd[0]) {
492 case READ_6: /* fall through */
493 case WRITE_6: /* fall through */
494 case READ_10: /* fall through */
495 case WRITE_10:
496 ldrv_num += 0x80;
497 }
498
499 return ldrv_num;
500}
501
502/**
503 * mega_build_cmd()
504 * @adapter - pointer to our soft state
505 * @cmd - Prepare using this scsi command
506 * @busy - busy flag if no resources
507 *
508 * Prepares a command and scatter gather list for the controller. This routine
509 * also finds out if the commands is intended for a logical drive or a
510 * physical device and prepares the controller command accordingly.
511 *
512 * We also re-order the logical drives and physical devices based on their
513 * boot settings.
514 */
515static scb_t *
516mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
517{
518 mega_ext_passthru *epthru;
519 mega_passthru *pthru;
520 scb_t *scb;
521 mbox_t *mbox;
522 long seg;
523 char islogical;
524 int max_ldrv_num;
525 int channel = 0;
526 int target = 0;
527 int ldrv_num = 0; /* logical drive number */
528
529
530 /*
531 * filter the internal and ioctl commands
532 */
3f6270ef
FT		 533 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
534 return (scb_t *)cmd->host_scribble;
1da177e4
LT		 535
536 /*
537 * We know what channels our logical drives are on - mega_find_card()
538 */
539 islogical = adapter->logdrv_chan[cmd->device->channel];
540
541 /*
542 * The theory: If physical drive is chosen for boot, all the physical
543 * devices are exported before the logical drives, otherwise physical
544 * devices are pushed after logical drives, in which case - Kernel sees
545 * the physical devices on virtual channel which is obviously converted
546 * to actual channel on the HBA.
547 */
548 if( adapter->boot_pdrv_enabled ) {
549 if( islogical ) {
550 /* logical channel */
551 channel = cmd->device->channel -
552 adapter->product_info.nchannels;
553 }
554 else {
555 /* this is physical channel */
556 channel = cmd->device->channel;
557 target = cmd->device->id;
558
559 /*
560 * boot from a physical disk, that disk needs to be
561 * exposed first IF both the channels are SCSI, then
562 * booting from the second channel is not allowed.
563 */
564 if( target == 0 ) {
565 target = adapter->boot_pdrv_tgt;
566 }
567 else if( target == adapter->boot_pdrv_tgt ) {
568 target = 0;
569 }
570 }
571 }
572 else {
573 if( islogical ) {
574 /* this is the logical channel */
575 channel = cmd->device->channel;
576 }
577 else {
578 /* physical channel */
579 channel = cmd->device->channel - NVIRT_CHAN;
580 target = cmd->device->id;
581 }
582 }
583
584
585 if(islogical) {
586
587 /* have just LUN 0 for each target on virtual channels */
588 if (cmd->device->lun) {
589 cmd->result = (DID_BAD_TARGET << 16);
590 cmd->scsi_done(cmd);
591 return NULL;
592 }
593
594 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
595
596
597 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
598 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
599
600 /*
601 * max_ldrv_num increases by 0x80 if some logical drive was
602 * deleted.
603 */
604 if(adapter->read_ldidmap)
605 max_ldrv_num += 0x80;
606
607 if(ldrv_num > max_ldrv_num ) {
608 cmd->result = (DID_BAD_TARGET << 16);
609 cmd->scsi_done(cmd);
610 return NULL;
611 }
612
613 }
614 else {
615 if( cmd->device->lun > 7) {
616 /*
617 * Do not support lun >7 for physically accessed
618 * devices
619 */
620 cmd->result = (DID_BAD_TARGET << 16);
621 cmd->scsi_done(cmd);
622 return NULL;
623 }
624 }
625
626 /*
627 *
628 * Logical drive commands
629 *
630 */
631 if(islogical) {
632 switch (cmd->cmnd[0]) {
633 case TEST_UNIT_READY:
1da177e4
LT		 634#if MEGA_HAVE_CLUSTERING
635 /*
636 * Do we support clustering and is the support enabled
637 * If no, return success always
638 */
639 if( !adapter->has_cluster ) {
640 cmd->result = (DID_OK << 16);
641 cmd->scsi_done(cmd);
642 return NULL;
643 }
644
645 if(!(scb = mega_allocate_scb(adapter, cmd))) {
646 *busy = 1;
647 return NULL;
648 }
649
650 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
651 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
652 scb->raw_mbox[3] = ldrv_num;
653
654 scb->dma_direction = PCI_DMA_NONE;
655
656 return scb;
657#else
658 cmd->result = (DID_OK << 16);
659 cmd->scsi_done(cmd);
660 return NULL;
661#endif
662
51c928c3
JB		 663 case MODE_SENSE: {
664 char *buf;
3f6270ef 665 struct scatterlist *sg;
51c928c3 666
3f6270ef 667 sg = scsi_sglist(cmd);
45711f1a 668 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
51c928c3 669
f0353301 670 memset(buf, 0, cmd->cmnd[4]);
3f6270ef 671 kunmap_atomic(buf - sg->offset, KM_IRQ0);
51c928c3 672
1da177e4
LT		 673 cmd->result = (DID_OK << 16);
674 cmd->scsi_done(cmd);
675 return NULL;
51c928c3 676 }
1da177e4
LT		 677
678 case READ_CAPACITY:
679 case INQUIRY:
680
681 if(!(adapter->flag & (1L << cmd->device->channel))) {
682
683 printk(KERN_NOTICE
684 "scsi%d: scanning scsi channel %d ",
685 adapter->host->host_no,
686 cmd->device->channel);
687 printk("for logical drives.\n");
688
689 adapter->flag |= (1L << cmd->device->channel);
690 }
691
692 /* Allocate a SCB and initialize passthru */
693 if(!(scb = mega_allocate_scb(adapter, cmd))) {
694 *busy = 1;
695 return NULL;
696 }
697 pthru = scb->pthru;
698
699 mbox = (mbox_t *)scb->raw_mbox;
700 memset(mbox, 0, sizeof(scb->raw_mbox));
701 memset(pthru, 0, sizeof(mega_passthru));
702
703 pthru->timeout = 0;
704 pthru->ars = 1;
705 pthru->reqsenselen = 14;
706 pthru->islogical = 1;
707 pthru->logdrv = ldrv_num;
708 pthru->cdblen = cmd->cmd_len;
709 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
710
711 if( adapter->has_64bit_addr ) {
712 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
713 }
714 else {
715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
716 }
717
718 scb->dma_direction = PCI_DMA_FROMDEVICE;
719
720 pthru->numsgelements = mega_build_sglist(adapter, scb,
721 &pthru->dataxferaddr, &pthru->dataxferlen);
722
723 mbox->m_out.xferaddr = scb->pthru_dma_addr;
724
725 return scb;
726
727 case READ_6:
728 case WRITE_6:
729 case READ_10:
730 case WRITE_10:
731 case READ_12:
732 case WRITE_12:
733
734 /* Allocate a SCB and initialize mailbox */
735 if(!(scb = mega_allocate_scb(adapter, cmd))) {
736 *busy = 1;
737 return NULL;
738 }
739 mbox = (mbox_t *)scb->raw_mbox;
740
741 memset(mbox, 0, sizeof(scb->raw_mbox));
742 mbox->m_out.logdrv = ldrv_num;
743
744 /*
745 * A little hack: 2nd bit is zero for all scsi read
746 * commands and is set for all scsi write commands
747 */
748 if( adapter->has_64bit_addr ) {
749 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
750 MEGA_MBOXCMD_LWRITE64:
751 MEGA_MBOXCMD_LREAD64 ;
752 }
753 else {
754 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
755 MEGA_MBOXCMD_LWRITE:
756 MEGA_MBOXCMD_LREAD ;
757 }
758
759 /*
760 * 6-byte READ(0x08) or WRITE(0x0A) cdb
761 */
762 if( cmd->cmd_len == 6 ) {
763 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
764 mbox->m_out.lba =
765 ((u32)cmd->cmnd[1] << 16) |
766 ((u32)cmd->cmnd[2] << 8) |
767 (u32)cmd->cmnd[3];
768
769 mbox->m_out.lba &= 0x1FFFFF;
770
771#if MEGA_HAVE_STATS
772 /*
773 * Take modulo 0x80, since the logical drive
774 * number increases by 0x80 when a logical
775 * drive was deleted
776 */
777 if (*cmd->cmnd == READ_6) {
778 adapter->nreads[ldrv_num%0x80]++;
779 adapter->nreadblocks[ldrv_num%0x80] +=
780 mbox->m_out.numsectors;
781 } else {
782 adapter->nwrites[ldrv_num%0x80]++;
783 adapter->nwriteblocks[ldrv_num%0x80] +=
784 mbox->m_out.numsectors;
785 }
786#endif
787 }
788
789 /*
790 * 10-byte READ(0x28) or WRITE(0x2A) cdb
791 */
792 if( cmd->cmd_len == 10 ) {
793 mbox->m_out.numsectors =
794 (u32)cmd->cmnd[8] |
795 ((u32)cmd->cmnd[7] << 8);
796 mbox->m_out.lba =
797 ((u32)cmd->cmnd[2] << 24) |
798 ((u32)cmd->cmnd[3] << 16) |
799 ((u32)cmd->cmnd[4] << 8) |
800 (u32)cmd->cmnd[5];
801
802#if MEGA_HAVE_STATS
803 if (*cmd->cmnd == READ_10) {
804 adapter->nreads[ldrv_num%0x80]++;
805 adapter->nreadblocks[ldrv_num%0x80] +=
806 mbox->m_out.numsectors;
807 } else {
808 adapter->nwrites[ldrv_num%0x80]++;
809 adapter->nwriteblocks[ldrv_num%0x80] +=
810 mbox->m_out.numsectors;
811 }
812#endif
813 }
814
815 /*
816 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
817 */
818 if( cmd->cmd_len == 12 ) {
819 mbox->m_out.lba =
820 ((u32)cmd->cmnd[2] << 24) |
821 ((u32)cmd->cmnd[3] << 16) |
822 ((u32)cmd->cmnd[4] << 8) |
823 (u32)cmd->cmnd[5];
824
825 mbox->m_out.numsectors =
826 ((u32)cmd->cmnd[6] << 24) |
827 ((u32)cmd->cmnd[7] << 16) |
828 ((u32)cmd->cmnd[8] << 8) |
829 (u32)cmd->cmnd[9];
830
831#if MEGA_HAVE_STATS
832 if (*cmd->cmnd == READ_12) {
833 adapter->nreads[ldrv_num%0x80]++;
834 adapter->nreadblocks[ldrv_num%0x80] +=
835 mbox->m_out.numsectors;
836 } else {
837 adapter->nwrites[ldrv_num%0x80]++;
838 adapter->nwriteblocks[ldrv_num%0x80] +=
839 mbox->m_out.numsectors;
840 }
841#endif
842 }
843
844 /*
845 * If it is a read command
846 */
847 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
848 scb->dma_direction = PCI_DMA_FROMDEVICE;
849 }
850 else {
851 scb->dma_direction = PCI_DMA_TODEVICE;
852 }
853
854 /* Calculate Scatter-Gather info */
855 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
856 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
857
858 return scb;
859
860#if MEGA_HAVE_CLUSTERING
861 case RESERVE: /* Fall through */
862 case RELEASE:
863
864 /*
865 * Do we support clustering and is the support enabled
866 */
867 if( ! adapter->has_cluster ) {
868
869 cmd->result = (DID_BAD_TARGET << 16);
870 cmd->scsi_done(cmd);
871 return NULL;
872 }
873
874 /* Allocate a SCB and initialize mailbox */
875 if(!(scb = mega_allocate_scb(adapter, cmd))) {
876 *busy = 1;
877 return NULL;
878 }
879
880 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
881 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
882 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
883
884 scb->raw_mbox[3] = ldrv_num;
885
886 scb->dma_direction = PCI_DMA_NONE;
887
888 return scb;
889#endif
890
891 default:
892 cmd->result = (DID_BAD_TARGET << 16);
893 cmd->scsi_done(cmd);
894 return NULL;
895 }
896 }
897
898 /*
899 * Passthru drive commands
900 */
901 else {
902 /* Allocate a SCB and initialize passthru */
903 if(!(scb = mega_allocate_scb(adapter, cmd))) {
904 *busy = 1;
905 return NULL;
906 }
907
908 mbox = (mbox_t *)scb->raw_mbox;
909 memset(mbox, 0, sizeof(scb->raw_mbox));
910
911 if( adapter->support_ext_cdb ) {
912
913 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
914 channel, target);
915
916 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
917
918 mbox->m_out.xferaddr = scb->epthru_dma_addr;
919
920 }
921 else {
922
923 pthru = mega_prepare_passthru(adapter, scb, cmd,
924 channel, target);
925
926 /* Initialize mailbox */
927 if( adapter->has_64bit_addr ) {
928 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
929 }
930 else {
931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
932 }
933
934 mbox->m_out.xferaddr = scb->pthru_dma_addr;
935
936 }
937 return scb;
938 }
939 return NULL;
940}
941
942
943/**
944 * mega_prepare_passthru()
945 * @adapter - pointer to our soft state
946 * @scb - our scsi control block
947 * @cmd - scsi command from the mid-layer
948 * @channel - actual channel on the controller
949 * @target - actual id on the controller.
950 *
951 * prepare a command for the scsi physical devices.
952 */
953static mega_passthru *
954mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
955 int channel, int target)
956{
957 mega_passthru *pthru;
958
959 pthru = scb->pthru;
960 memset(pthru, 0, sizeof (mega_passthru));
961
962 /* 0=6sec/1=60sec/2=10min/3=3hrs */
963 pthru->timeout = 2;
964
965 pthru->ars = 1;
966 pthru->reqsenselen = 14;
967 pthru->islogical = 0;
968
969 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
970
971 pthru->target = (adapter->flag & BOARD_40LD) ?
972 (channel << 4) | target : target;
973
974 pthru->cdblen = cmd->cmd_len;
975 pthru->logdrv = cmd->device->lun;
976
977 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
978
979 /* Not sure about the direction */
980 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
981
982 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
983 switch (cmd->cmnd[0]) {
984 case INQUIRY:
985 case READ_CAPACITY:
986 if(!(adapter->flag & (1L << cmd->device->channel))) {
987
988 printk(KERN_NOTICE
989 "scsi%d: scanning scsi channel %d [P%d] ",
990 adapter->host->host_no,
991 cmd->device->channel, channel);
992 printk("for physical devices.\n");
993
994 adapter->flag |= (1L << cmd->device->channel);
995 }
996 /* Fall through */
997 default:
998 pthru->numsgelements = mega_build_sglist(adapter, scb,
999 &pthru->dataxferaddr, &pthru->dataxferlen);
1000 break;
1001 }
1002 return pthru;
1003}
1004
1005
1006/**
1007 * mega_prepare_extpassthru()
1008 * @adapter - pointer to our soft state
1009 * @scb - our scsi control block
1010 * @cmd - scsi command from the mid-layer
1011 * @channel - actual channel on the controller
1012 * @target - actual id on the controller.
1013 *
1014 * prepare a command for the scsi physical devices. This rountine prepares
1015 * commands for devices which can take extended CDBs (>10 bytes)
1016 */
1017static mega_ext_passthru *
1018mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1019 int channel, int target)
1020{
1021 mega_ext_passthru *epthru;
1022
1023 epthru = scb->epthru;
1024 memset(epthru, 0, sizeof(mega_ext_passthru));
1025
1026 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1027 epthru->timeout = 2;
1028
1029 epthru->ars = 1;
1030 epthru->reqsenselen = 14;
1031 epthru->islogical = 0;
1032
1033 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1034 epthru->target = (adapter->flag & BOARD_40LD) ?
1035 (channel << 4) | target : target;
1036
1037 epthru->cdblen = cmd->cmd_len;
1038 epthru->logdrv = cmd->device->lun;
1039
1040 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1041
1042 /* Not sure about the direction */
1043 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1044
1045 switch(cmd->cmnd[0]) {
1046 case INQUIRY:
1047 case READ_CAPACITY:
1048 if(!(adapter->flag & (1L << cmd->device->channel))) {
1049
1050 printk(KERN_NOTICE
1051 "scsi%d: scanning scsi channel %d [P%d] ",
1052 adapter->host->host_no,
1053 cmd->device->channel, channel);
1054 printk("for physical devices.\n");
1055
1056 adapter->flag |= (1L << cmd->device->channel);
1057 }
1058 /* Fall through */
1059 default:
1060 epthru->numsgelements = mega_build_sglist(adapter, scb,
1061 &epthru->dataxferaddr, &epthru->dataxferlen);
1062 break;
1063 }
1064
1065 return epthru;
1066}
1067
1068static void
1069__mega_runpendq(adapter_t *adapter)
1070{
1071 scb_t *scb;
1072 struct list_head *pos, *next;
1073
1074 /* Issue any pending commands to the card */
1075 list_for_each_safe(pos, next, &adapter->pending_list) {
1076
1077 scb = list_entry(pos, scb_t, list);
1078
1079 if( !(scb->state & SCB_ISSUED) ) {
1080
1081 if( issue_scb(adapter, scb) != 0 )
1082 return;
1083 }
1084 }
1085
1086 return;
1087}
1088
1089
1090/**
1091 * issue_scb()
1092 * @adapter - pointer to our soft state
1093 * @scb - scsi control block
1094 *
1095 * Post a command to the card if the mailbox is available, otherwise return
1096 * busy. We also take the scb from the pending list if the mailbox is
1097 * available.
1098 */
1099static int
1100issue_scb(adapter_t *adapter, scb_t *scb)
1101{
1102 volatile mbox64_t *mbox64 = adapter->mbox64;
1103 volatile mbox_t *mbox = adapter->mbox;
1104 unsigned int i = 0;
1105
1106 if(unlikely(mbox->m_in.busy)) {
1107 do {
1108 udelay(1);
1109 i++;
1110 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1111
1112 if(mbox->m_in.busy) return -1;
1113 }
1114
1115 /* Copy mailbox data into host structure */
1116 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1117 sizeof(struct mbox_out));
1118
1119 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1120 mbox->m_in.busy = 1; /* Set busy */
1121
1122
1123 /*
1124 * Increment the pending queue counter
1125 */
1126 atomic_inc(&adapter->pend_cmds);
1127
1128 switch (mbox->m_out.cmd) {
1129 case MEGA_MBOXCMD_LREAD64:
1130 case MEGA_MBOXCMD_LWRITE64:
1131 case MEGA_MBOXCMD_PASSTHRU64:
1132 case MEGA_MBOXCMD_EXTPTHRU:
1133 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1134 mbox64->xfer_segment_hi = 0;
1135 mbox->m_out.xferaddr = 0xFFFFFFFF;
1136 break;
1137 default:
1138 mbox64->xfer_segment_lo = 0;
1139 mbox64->xfer_segment_hi = 0;
1140 }
1141
1142 /*
1143 * post the command
1144 */
1145 scb->state |= SCB_ISSUED;
1146
1147 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1148 mbox->m_in.poll = 0;
1149 mbox->m_in.ack = 0;
1150 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1151 }
1152 else {
1153 irq_enable(adapter);
1154 issue_command(adapter);
1155 }
1156
1157 return 0;
1158}
1159
1160/*
1161 * Wait until the controller's mailbox is available
1162 */
1163static inline int
1164mega_busywait_mbox (adapter_t *adapter)
1165{
1166 if (adapter->mbox->m_in.busy)
1167 return __mega_busywait_mbox(adapter);
1168 return 0;
1169}
1170
1171/**
1172 * issue_scb_block()
1173 * @adapter - pointer to our soft state
1174 * @raw_mbox - the mailbox
1175 *
1176 * Issue a scb in synchronous and non-interrupt mode
1177 */
1178static int
1179issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1180{
1181 volatile mbox64_t *mbox64 = adapter->mbox64;
1182 volatile mbox_t *mbox = adapter->mbox;
1183 u8 byte;
1184
1185 /* Wait until mailbox is free */
1186 if(mega_busywait_mbox (adapter))
1187 goto bug_blocked_mailbox;
1188
1189 /* Copy mailbox data into host structure */
1190 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1191 mbox->m_out.cmdid = 0xFE;
1192 mbox->m_in.busy = 1;
1193
1194 switch (raw_mbox[0]) {
1195 case MEGA_MBOXCMD_LREAD64:
1196 case MEGA_MBOXCMD_LWRITE64:
1197 case MEGA_MBOXCMD_PASSTHRU64:
1198 case MEGA_MBOXCMD_EXTPTHRU:
1199 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1200 mbox64->xfer_segment_hi = 0;
1201 mbox->m_out.xferaddr = 0xFFFFFFFF;
1202 break;
1203 default:
1204 mbox64->xfer_segment_lo = 0;
1205 mbox64->xfer_segment_hi = 0;
1206 }
1207
1208 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1209 mbox->m_in.poll = 0;
1210 mbox->m_in.ack = 0;
1211 mbox->m_in.numstatus = 0xFF;
1212 mbox->m_in.status = 0xFF;
1213 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1214
1215 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1216 cpu_relax();
1217
1218 mbox->m_in.numstatus = 0xFF;
1219
1220 while( (volatile u8)mbox->m_in.poll != 0x77 )
1221 cpu_relax();
1222
1223 mbox->m_in.poll = 0;
1224 mbox->m_in.ack = 0x77;
1225
1226 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1227
1228 while(RDINDOOR(adapter) & 0x2)
1229 cpu_relax();
1230 }
1231 else {
1232 irq_disable(adapter);
1233 issue_command(adapter);
1234
1235 while (!((byte = irq_state(adapter)) & INTR_VALID))
1236 cpu_relax();
1237
1238 set_irq_state(adapter, byte);
1239 irq_enable(adapter);
1240 irq_ack(adapter);
1241 }
1242
1243 return mbox->m_in.status;
1244
1245bug_blocked_mailbox:
1246 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1247 udelay (1000);
1248 return -1;
1249}
1250
1251
1252/**
1253 * megaraid_isr_iomapped()
1254 * @irq - irq
1255 * @devp - pointer to our soft state
1da177e4
LT		 1256 *
1257 * Interrupt service routine for io-mapped controllers.
1258 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1259 * and service the completed commands.
1260 */
1261static irqreturn_t
7d12e780 1262megaraid_isr_iomapped(int irq, void *devp)
1da177e4
LT		 1263{
1264 adapter_t *adapter = devp;
1265 unsigned long flags;
1266 u8 status;
1267 u8 nstatus;
1268 u8 completed[MAX_FIRMWARE_STATUS];
1269 u8 byte;
1270 int handled = 0;
1271
1272
1273 /*
1274 * loop till F/W has more commands for us to complete.
1275 */
1276 spin_lock_irqsave(&adapter->lock, flags);
1277
1278 do {
1279 /* Check if a valid interrupt is pending */
1280 byte = irq_state(adapter);
1281 if( (byte & VALID_INTR_BYTE) == 0 ) {
1282 /*
1283 * No more pending commands
1284 */
1285 goto out_unlock;
1286 }
1287 set_irq_state(adapter, byte);
1288
1289 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1290 == 0xFF)
1291 cpu_relax();
1292 adapter->mbox->m_in.numstatus = 0xFF;
1293
1294 status = adapter->mbox->m_in.status;
1295
1296 /*
1297 * decrement the pending queue counter
1298 */
1299 atomic_sub(nstatus, &adapter->pend_cmds);
1300
1301 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1302 nstatus);
1303
1304 /* Acknowledge interrupt */
1305 irq_ack(adapter);
1306
1307 mega_cmd_done(adapter, completed, nstatus, status);
1308
1309 mega_rundoneq(adapter);
1310
1311 handled = 1;
1312
1313 /* Loop through any pending requests */
1314 if(atomic_read(&adapter->quiescent) == 0) {
1315 mega_runpendq(adapter);
1316 }
1317
1318 } while(1);
1319
1320 out_unlock:
1321
1322 spin_unlock_irqrestore(&adapter->lock, flags);
1323
1324 return IRQ_RETVAL(handled);
1325}
1326
1327
1328/**
1329 * megaraid_isr_memmapped()
1330 * @irq - irq
1331 * @devp - pointer to our soft state
1da177e4
LT		 1332 *
1333 * Interrupt service routine for memory-mapped controllers.
1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1335 * and service the completed commands.
1336 */
1337static irqreturn_t
7d12e780 1338megaraid_isr_memmapped(int irq, void *devp)
1da177e4
LT		 1339{
1340 adapter_t *adapter = devp;
1341 unsigned long flags;
1342 u8 status;
1343 u32 dword = 0;
1344 u8 nstatus;
1345 u8 completed[MAX_FIRMWARE_STATUS];
1346 int handled = 0;
1347
1348
1349 /*
1350 * loop till F/W has more commands for us to complete.
1351 */
1352 spin_lock_irqsave(&adapter->lock, flags);
1353
1354 do {
1355 /* Check if a valid interrupt is pending */
1356 dword = RDOUTDOOR(adapter);
1357 if(dword != 0x10001234) {
1358 /*
1359 * No more pending commands
1360 */
1361 goto out_unlock;
1362 }
1363 WROUTDOOR(adapter, 0x10001234);
1364
1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1366 == 0xFF) {
1367 cpu_relax();
1368 }
1369 adapter->mbox->m_in.numstatus = 0xFF;
1370
1371 status = adapter->mbox->m_in.status;
1372
1373 /*
1374 * decrement the pending queue counter
1375 */
1376 atomic_sub(nstatus, &adapter->pend_cmds);
1377
1378 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1379 nstatus);
1380
1381 /* Acknowledge interrupt */
1382 WRINDOOR(adapter, 0x2);
1383
1384 handled = 1;
1385
00769ec4
JG		 1386 while( RDINDOOR(adapter) & 0x02 )
1387 cpu_relax();
1da177e4
LT		 1388
1389 mega_cmd_done(adapter, completed, nstatus, status);
1390
1391 mega_rundoneq(adapter);
1392
1393 /* Loop through any pending requests */
1394 if(atomic_read(&adapter->quiescent) == 0) {
1395 mega_runpendq(adapter);
1396 }
1397
1398 } while(1);
1399
1400 out_unlock:
1401
1402 spin_unlock_irqrestore(&adapter->lock, flags);
1403
1404 return IRQ_RETVAL(handled);
1405}
1406/**
1407 * mega_cmd_done()
1408 * @adapter - pointer to our soft state
1409 * @completed - array of ids of completed commands
1410 * @nstatus - number of completed commands
1411 * @status - status of the last command completed
1412 *
1413 * Complete the comamnds and call the scsi mid-layer callback hooks.
1414 */
1415static void
1416mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1417{
1418 mega_ext_passthru *epthru = NULL;
1419 struct scatterlist *sgl;
1420 Scsi_Cmnd *cmd = NULL;
1421 mega_passthru *pthru = NULL;
1422 mbox_t *mbox = NULL;
1423 u8 c;
1424 scb_t *scb;
1425 int islogical;
1426 int cmdid;
1427 int i;
1428
1429 /*
1430 * for all the commands completed, call the mid-layer callback routine
1431 * and free the scb.
1432 */
1433 for( i = 0; i < nstatus; i++ ) {
1434
1435 cmdid = completed[i];
1436
1437 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1438 scb = &adapter->int_scb;
1439 cmd = scb->cmd;
1440 mbox = (mbox_t *)scb->raw_mbox;
1441
1442 /*
1443 * Internal command interface do not fire the extended
1444 * passthru or 64-bit passthru
1445 */
1446 pthru = scb->pthru;
1447
1448 }
1449 else {
1450 scb = &adapter->scb_list[cmdid];
1451
1452 /*
1453 * Make sure f/w has completed a valid command
1454 */
1455 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1456 printk(KERN_CRIT
1457 "megaraid: invalid command ");
1458 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1459 cmdid, scb->state, scb->cmd);
1460
1461 continue;
1462 }
1463
1464 /*
1465 * Was a abort issued for this command
1466 */
1467 if( scb->state & SCB_ABORT ) {
1468
1469 printk(KERN_WARNING
1470 "megaraid: aborted cmd %lx[%x] complete.\n",
1471 scb->cmd->serial_number, scb->idx);
1472
1473 scb->cmd->result = (DID_ABORT << 16);
1474
1475 list_add_tail(SCSI_LIST(scb->cmd),
1476 &adapter->completed_list);
1477
1478 mega_free_scb(adapter, scb);
1479
1480 continue;
1481 }
1482
1483 /*
1484 * Was a reset issued for this command
1485 */
1486 if( scb->state & SCB_RESET ) {
1487
1488 printk(KERN_WARNING
1489 "megaraid: reset cmd %lx[%x] complete.\n",
1490 scb->cmd->serial_number, scb->idx);
1491
1492 scb->cmd->result = (DID_RESET << 16);
1493
1494 list_add_tail(SCSI_LIST(scb->cmd),
1495 &adapter->completed_list);
1496
1497 mega_free_scb (adapter, scb);
1498
1499 continue;
1500 }
1501
1502 cmd = scb->cmd;
1503 pthru = scb->pthru;
1504 epthru = scb->epthru;
1505 mbox = (mbox_t *)scb->raw_mbox;
1506
1507#if MEGA_HAVE_STATS
1508 {
1509
1510 int logdrv = mbox->m_out.logdrv;
1511
1512 islogical = adapter->logdrv_chan[cmd->channel];
1513 /*
1514 * Maintain an error counter for the logical drive.
1515 * Some application like SNMP agent need such
1516 * statistics
1517 */
1518 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1519 cmd->cmnd[0] == READ_10 ||
1520 cmd->cmnd[0] == READ_12)) {
1521 /*
1522 * Logical drive number increases by 0x80 when
1523 * a logical drive is deleted
1524 */
1525 adapter->rd_errors[logdrv%0x80]++;
1526 }
1527
1528 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1529 cmd->cmnd[0] == WRITE_10 ||
1530 cmd->cmnd[0] == WRITE_12)) {
1531 /*
1532 * Logical drive number increases by 0x80 when
1533 * a logical drive is deleted
1534 */
1535 adapter->wr_errors[logdrv%0x80]++;
1536 }
1537
1538 }
1539#endif
1540 }
1541
1542 /*
1543 * Do not return the presence of hard disk on the channel so,
1544 * inquiry sent, and returned data==hard disk or removable
1545 * hard disk and not logical, request should return failure! -
1546 * PJ
1547 */
1548 islogical = adapter->logdrv_chan[cmd->device->channel];
1549 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1550
3f6270ef 1551 sgl = scsi_sglist(cmd);
45711f1a
JA		 1552 if( sg_page(sgl) ) {
1553 c = *(unsigned char *) sg_virt(&sgl[0]);
3f6270ef
FT		 1554 } else {
1555 printk(KERN_WARNING
1556 "megaraid: invalid sg.\n");
1557 c = 0;
1da177e4
LT		 1558 }
1559
1560 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1561 ((c & 0x1F ) == TYPE_DISK)) {
1562 status = 0xF0;
1563 }
1564 }
1565
1566 /* clear result; otherwise, success returns corrupt value */
1567 cmd->result = 0;
1568
1569 /* Convert MegaRAID status to Linux error code */
1570 switch (status) {
1571 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1572 cmd->result |= (DID_OK << 16);
1573 break;
1574
1575 case 0x02: /* ERROR_ABORTED, i.e.
1576 SCSI_STATUS_CHECK_CONDITION */
1577
1578 /* set sense_buffer and result fields */
1579 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1580 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1581
1582 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1583 14);
1584
1585 cmd->result = (DRIVER_SENSE << 24) |
1586 (DID_OK << 16) |
1587 (CHECK_CONDITION << 1);
1588 }
1589 else {
1590 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1591
1592 memcpy(cmd->sense_buffer,
1593 epthru->reqsensearea, 14);
1594
1595 cmd->result = (DRIVER_SENSE << 24) |
1596 (DID_OK << 16) |
1597 (CHECK_CONDITION << 1);
1598 } else {
1599 cmd->sense_buffer[0] = 0x70;
1600 cmd->sense_buffer[2] = ABORTED_COMMAND;
1601 cmd->result |= (CHECK_CONDITION << 1);
1602 }
1603 }
1604 break;
1605
1606 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1607 SCSI_STATUS_BUSY */
1608 cmd->result |= (DID_BUS_BUSY << 16) | status;
1609 break;
1610
1611 default:
1612#if MEGA_HAVE_CLUSTERING
1613 /*
1614 * If TEST_UNIT_READY fails, we know
1615 * MEGA_RESERVATION_STATUS failed
1616 */
1617 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1618 cmd->result |= (DID_ERROR << 16) |
1619 (RESERVATION_CONFLICT << 1);
1620 }
1621 else
1622 /*
1623 * Error code returned is 1 if Reserve or Release
1624 * failed or the input parameter is invalid
1625 */
1626 if( status == 1 &&
1627 (cmd->cmnd[0] == RESERVE ||
1628 cmd->cmnd[0] == RELEASE) ) {
1629
1630 cmd->result |= (DID_ERROR << 16) |
1631 (RESERVATION_CONFLICT << 1);
1632 }
1633 else
1634#endif
1635 cmd->result |= (DID_BAD_TARGET << 16)|status;
1636 }
1637
1638 /*
1639 * Only free SCBs for the commands coming down from the
1640 * mid-layer, not for which were issued internally
1641 *
1642 * For internal command, restore the status returned by the
1643 * firmware so that user can interpret it.
1644 */
1645 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1646 cmd->result = status;
1647
1648 /*
1649 * Remove the internal command from the pending list
1650 */
1651 list_del_init(&scb->list);
1652 scb->state = SCB_FREE;
1653 }
1654 else {
1655 mega_free_scb(adapter, scb);
1656 }
1657
1658 /* Add Scsi_Command to end of completed queue */
1659 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1660 }
1661}
1662
1663
1664/*
1665 * mega_runpendq()
1666 *
1667 * Run through the list of completed requests and finish it
1668 */
1669static void
1670mega_rundoneq (adapter_t *adapter)
1671{
1672 Scsi_Cmnd *cmd;
1673 struct list_head *pos;
1674
1675 list_for_each(pos, &adapter->completed_list) {
1676
0a04137e 1677 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1da177e4
LT		 1678
1679 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1680 cmd->scsi_done(cmd);
1681 }
1682
1683 INIT_LIST_HEAD(&adapter->completed_list);
1684}
1685
1686
1687/*
1688 * Free a SCB structure
1689 * Note: We assume the scsi commands associated with this scb is not free yet.
1690 */
1691static void
1692mega_free_scb(adapter_t *adapter, scb_t *scb)
1693{
1694 switch( scb->dma_type ) {
1695
1696 case MEGA_DMA_TYPE_NONE:
1697 break;
1698
1da177e4 1699 case MEGA_SGLIST:
3f6270ef 1700 scsi_dma_unmap(scb->cmd);
1da177e4 1701 break;
1da177e4
LT		 1702 default:
1703 break;
1704 }
1705
1706 /*
1707 * Remove from the pending list
1708 */
1709 list_del_init(&scb->list);
1710
1711 /* Link the scb back into free list */
1712 scb->state = SCB_FREE;
1713 scb->cmd = NULL;
1714
1715 list_add(&scb->list, &adapter->free_list);
1716}
1717
1718
1719static int
1720__mega_busywait_mbox (adapter_t *adapter)
1721{
1722 volatile mbox_t *mbox = adapter->mbox;
1723 long counter;
1724
1725 for (counter = 0; counter < 10000; counter++) {
1726 if (!mbox->m_in.busy)
1727 return 0;
e1fa0cea
AL		 1728 udelay(100);
1729 cond_resched();
1da177e4
LT		 1730 }
1731 return -1; /* give up after 1 second */
1732}
1733
1734/*
1735 * Copies data to SGLIST
1736 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1737 */
1738static int
1739mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1740{
3f6270ef 1741 struct scatterlist *sg;
1da177e4
LT		 1742 Scsi_Cmnd *cmd;
1743 int sgcnt;
1744 int idx;
1745
1746 cmd = scb->cmd;
1747
1da177e4
LT		 1748 /*
1749 * Copy Scatter-Gather list info into controller structure.
1750 *
1751 * The number of sg elements returned must not exceed our limit
1752 */
3f6270ef 1753 sgcnt = scsi_dma_map(cmd);
1da177e4
LT		 1754
1755 scb->dma_type = MEGA_SGLIST;
1756
3f6270ef 1757 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1da177e4 1758
51c928c3
JB		 1759 *len = 0;
1760
d5e89385
FT		 1761 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1762 sg = scsi_sglist(cmd);
1763 scb->dma_h_bulkdata = sg_dma_address(sg);
1764 *buf = (u32)scb->dma_h_bulkdata;
1765 *len = sg_dma_len(sg);
1766 return 0;
1767 }
1768
3f6270ef
FT		 1769 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1770 if (adapter->has_64bit_addr) {
1771 scb->sgl64[idx].address = sg_dma_address(sg);
1772 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1773 } else {
1774 scb->sgl[idx].address = sg_dma_address(sg);
1775 *len += scb->sgl[idx].length = sg_dma_len(sg);
1da177e4
LT		 1776 }
1777 }
1778
1779 /* Reset pointer and length fields */
1780 *buf = scb->sgl_dma_addr;
1781
1da177e4
LT		 1782 /* Return count of SG requests */
1783 return sgcnt;
1784}
1785
1786
1787/*
1788 * mega_8_to_40ld()
1789 *
1790 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1791 * Enquiry3 structures for later use
1792 */
1793static void
1794mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1795 mega_product_info *product_info)
1796{
1797 int i;
1798
1799 product_info->max_commands = inquiry->adapter_info.max_commands;
1800 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1801 product_info->nchannels = inquiry->adapter_info.nchannels;
1802
1803 for (i = 0; i < 4; i++) {
1804 product_info->fw_version[i] =
1805 inquiry->adapter_info.fw_version[i];
1806
1807 product_info->bios_version[i] =
1808 inquiry->adapter_info.bios_version[i];
1809 }
1810 enquiry3->cache_flush_interval =
1811 inquiry->adapter_info.cache_flush_interval;
1812
1813 product_info->dram_size = inquiry->adapter_info.dram_size;
1814
1815 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1816
1817 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1818 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1819 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1820 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1821 }
1822
1823 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1824 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1825}
1826
1827static inline void
1828mega_free_sgl(adapter_t *adapter)
1829{
1830 scb_t *scb;
1831 int i;
1832
1833 for(i = 0; i < adapter->max_cmds; i++) {
1834
1835 scb = &adapter->scb_list[i];
1836
1837 if( scb->sgl64 ) {
1838 pci_free_consistent(adapter->dev,
1839 sizeof(mega_sgl64) * adapter->sglen,
1840 scb->sgl64,
1841 scb->sgl_dma_addr);
1842
1843 scb->sgl64 = NULL;
1844 }
1845
1846 if( scb->pthru ) {
1847 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1848 scb->pthru, scb->pthru_dma_addr);
1849
1850 scb->pthru = NULL;
1851 }
1852
1853 if( scb->epthru ) {
1854 pci_free_consistent(adapter->dev,
1855 sizeof(mega_ext_passthru),
1856 scb->epthru, scb->epthru_dma_addr);
1857
1858 scb->epthru = NULL;
1859 }
1860
1861 }
1862}
1863
1864
1865/*
1866 * Get information about the card/driver
1867 */
1868const char *
1869megaraid_info(struct Scsi_Host *host)
1870{
1871 static char buffer[512];
1872 adapter_t *adapter;
1873
1874 adapter = (adapter_t *)host->hostdata;
1875
1876 sprintf (buffer,
1877 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1878 adapter->fw_version, adapter->product_info.max_commands,
1879 adapter->host->max_id, adapter->host->max_channel,
1880 adapter->host->max_lun);
1881 return buffer;
1882}
1883
1884/*
1885 * Abort a previous SCSI request. Only commands on the pending list can be
1886 * aborted. All the commands issued to the F/W must complete.
1887 */
1888static int
1889megaraid_abort(Scsi_Cmnd *cmd)
1890{
1891 adapter_t *adapter;
1892 int rval;
1893
1894 adapter = (adapter_t *)cmd->device->host->hostdata;
1895
1896 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1897
1898 /*
1899 * This is required here to complete any completed requests
1900 * to be communicated over to the mid layer.
1901 */
1902 mega_rundoneq(adapter);
1903
1904 return rval;
1905}
1906
1907
1908static int
fa4c4966 1909megaraid_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 1910{
1911 adapter_t *adapter;
1912 megacmd_t mc;
1913 int rval;
1914
1915 adapter = (adapter_t *)cmd->device->host->hostdata;
1916
1917#if MEGA_HAVE_CLUSTERING
1918 mc.cmd = MEGA_CLUSTER_CMD;
1919 mc.opcode = MEGA_RESET_RESERVATIONS;
1920
cb0258a2 1921 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 1922 printk(KERN_WARNING
1923 "megaraid: reservation reset failed.\n");
1924 }
1925 else {
1926 printk(KERN_INFO "megaraid: reservation reset.\n");
1927 }
1da177e4
LT		 1928#endif
1929
fa4c4966
JB		 1930 spin_lock_irq(&adapter->lock);
1931
1da177e4
LT		 1932 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1933
1934 /*
1935 * This is required here to complete any completed requests
1936 * to be communicated over to the mid layer.
1937 */
1938 mega_rundoneq(adapter);
94d0e7b8
JG		 1939 spin_unlock_irq(&adapter->lock);
1940
fa4c4966 1941 return rval;
94d0e7b8 1942}
1da177e4 1943
1da177e4
LT		 1944/**
1945 * megaraid_abort_and_reset()
1946 * @adapter - megaraid soft state
1947 * @cmd - scsi command to be aborted or reset
1948 * @aor - abort or reset flag
1949 *
1950 * Try to locate the scsi command in the pending queue. If found and is not
1951 * issued to the controller, abort/reset it. Otherwise return failure
1952 */
1953static int
1954megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1955{
1956 struct list_head *pos, *next;
1957 scb_t *scb;
1958
1959 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1960 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1961 cmd->cmnd[0], cmd->device->channel,
1962 cmd->device->id, cmd->device->lun);
1963
1964 if(list_empty(&adapter->pending_list))
1965 return FALSE;
1966
1967 list_for_each_safe(pos, next, &adapter->pending_list) {
1968
1969 scb = list_entry(pos, scb_t, list);
1970
1971 if (scb->cmd == cmd) { /* Found command */
1972
1973 scb->state |= aor;
1974
1975 /*
d41ad938
NA		 1976 * Check if this command has firmware ownership. If
1977 * yes, we cannot reset this command. Whenever f/w
1da177e4
LT		 1978 * completes this command, we will return appropriate
1979 * status from ISR.
1980 */
1981 if( scb->state & SCB_ISSUED ) {
1982
1983 printk(KERN_WARNING
1984 "megaraid: %s-%lx[%x], fw owner.\n",
1985 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1986 cmd->serial_number, scb->idx);
1987
1988 return FALSE;
1989 }
1990 else {
1991
1992 /*
1993 * Not yet issued! Remove from the pending
1994 * list
1995 */
1996 printk(KERN_WARNING
1997 "megaraid: %s-%lx[%x], driver owner.\n",
1998 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1999 cmd->serial_number, scb->idx);
2000
2001 mega_free_scb(adapter, scb);
2002
2003 if( aor == SCB_ABORT ) {
2004 cmd->result = (DID_ABORT << 16);
2005 }
2006 else {
2007 cmd->result = (DID_RESET << 16);
2008 }
2009
2010 list_add_tail(SCSI_LIST(cmd),
2011 &adapter->completed_list);
2012
2013 return TRUE;
2014 }
2015 }
2016 }
2017
2018 return FALSE;
2019}
2020
2021static inline int
2022make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2023{
bab41e9b 2024 *pdev = alloc_pci_dev();
1da177e4
LT		 2025
2026 if( *pdev == NULL ) return -1;
2027
2028 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2029
284901a9 2030 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
1da177e4
LT		 2031 kfree(*pdev);
2032 return -1;
2033 }
2034
2035 return 0;
2036}
2037
2038static inline void
2039free_local_pdev(struct pci_dev *pdev)
2040{
2041 kfree(pdev);
2042}
2043
2044/**
2045 * mega_allocate_inquiry()
2046 * @dma_handle - handle returned for dma address
2047 * @pdev - handle to pci device
2048 *
2049 * allocates memory for inquiry structure
2050 */
2051static inline void *
2052mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2053{
2054 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2055}
2056
2057
2058static inline void
2059mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2060{
2061 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2062}
2063
2064
2065#ifdef CONFIG_PROC_FS
2066/* Following code handles /proc fs */
2067
2068#define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2069 S_IRUSR | S_IFREG, \
2070 controller_proc_dir_entry, \
2071 func, adapter)
2072
2073/**
2074 * mega_create_proc_entry()
2075 * @index - index in soft state array
2076 * @parent - parent node for this /proc entry
2077 *
2078 * Creates /proc entries for our controllers.
2079 */
2080static void
2081mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2082{
2083 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2084 u8 string[64] = { 0 };
2085 adapter_t *adapter = hba_soft_state[index];
2086
2087 sprintf(string, "hba%d", adapter->host->host_no);
2088
2089 controller_proc_dir_entry =
2090 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2091
2092 if(!controller_proc_dir_entry) {
2093 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2094 return;
2095 }
2096 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2097 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2098 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2099#if MEGA_HAVE_ENH_PROC
2100 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2101 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2102 proc_battery);
2103
2104 /*
2105 * Display each physical drive on its channel
2106 */
2107 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2108 proc_pdrv_ch0);
2109 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2110 proc_pdrv_ch1);
2111 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2112 proc_pdrv_ch2);
2113 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2114 proc_pdrv_ch3);
2115
2116 /*
2117 * Display a set of up to 10 logical drive through each of following
2118 * /proc entries
2119 */
2120 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2121 proc_rdrv_10);
2122 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2123 proc_rdrv_20);
2124 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2125 proc_rdrv_30);
2126 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2127 proc_rdrv_40);
2128#endif
2129}
2130
2131
2132/**
2133 * proc_read_config()
2134 * @page - buffer to write the data in
2135 * @start - where the actual data has been written in page
2136 * @offset - same meaning as the read system call
2137 * @count - same meaning as the read system call
2138 * @eof - set if no more data needs to be returned
2139 * @data - pointer to our soft state
2140 *
2141 * Display configuration information about the controller.
2142 */
2143static int
2144proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2145 void *data)
2146{
2147
2148 adapter_t *adapter = (adapter_t *)data;
2149 int len = 0;
2150
2151 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2152
2153 if(adapter->product_info.product_name[0])
2154 len += sprintf(page+len, "%s\n",
2155 adapter->product_info.product_name);
2156
2157 len += sprintf(page+len, "Controller Type: ");
2158
2159 if( adapter->flag & BOARD_MEMMAP ) {
2160 len += sprintf(page+len,
2161 "438/466/467/471/493/518/520/531/532\n");
2162 }
2163 else {
2164 len += sprintf(page+len,
2165 "418/428/434\n");
2166 }
2167
2168 if(adapter->flag & BOARD_40LD) {
2169 len += sprintf(page+len,
2170 "Controller Supports 40 Logical Drives\n");
2171 }
2172
2173 if(adapter->flag & BOARD_64BIT) {
2174 len += sprintf(page+len,
2175 "Controller capable of 64-bit memory addressing\n");
2176 }
2177 if( adapter->has_64bit_addr ) {
2178 len += sprintf(page+len,
2179 "Controller using 64-bit memory addressing\n");
2180 }
2181 else {
2182 len += sprintf(page+len,
2183 "Controller is not using 64-bit memory addressing\n");
2184 }
2185
2186 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2187 adapter->host->irq);
2188
2189 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2190 adapter->numldrv, adapter->product_info.nchannels);
2191
2192 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2193 adapter->fw_version, adapter->bios_version,
2194 adapter->product_info.dram_size);
2195
2196 len += sprintf(page+len,
2197 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2198 adapter->product_info.max_commands, adapter->max_cmds);
2199
2200 len += sprintf(page+len, "support_ext_cdb = %d\n",
2201 adapter->support_ext_cdb);
2202 len += sprintf(page+len, "support_random_del = %d\n",
2203 adapter->support_random_del);
2204 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2205 adapter->boot_ldrv_enabled);
2206 len += sprintf(page+len, "boot_ldrv = %d\n",
2207 adapter->boot_ldrv);
2208 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2209 adapter->boot_pdrv_enabled);
2210 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2211 adapter->boot_pdrv_ch);
2212 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2213 adapter->boot_pdrv_tgt);
2214 len += sprintf(page+len, "quiescent = %d\n",
2215 atomic_read(&adapter->quiescent));
2216 len += sprintf(page+len, "has_cluster = %d\n",
2217 adapter->has_cluster);
2218
2219 len += sprintf(page+len, "\nModule Parameters:\n");
2220 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2221 max_cmd_per_lun);
2222 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2223 max_sectors_per_io);
2224
2225 *eof = 1;
2226
2227 return len;
2228}
2229
2230
2231
2232/**
2233 * proc_read_stat()
2234 * @page - buffer to write the data in
2235 * @start - where the actual data has been written in page
2236 * @offset - same meaning as the read system call
2237 * @count - same meaning as the read system call
2238 * @eof - set if no more data needs to be returned
2239 * @data - pointer to our soft state
2240 *
2241 * Diaplay statistical information about the I/O activity.
2242 */
2243static int
2244proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2245 void *data)
2246{
2247 adapter_t *adapter;
2248 int len;
2249 int i;
2250
2251 i = 0; /* avoid compilation warnings */
2252 len = 0;
2253 adapter = (adapter_t *)data;
2254
2255 len = sprintf(page, "Statistical Information for this controller\n");
2256 len += sprintf(page+len, "pend_cmds = %d\n",
2257 atomic_read(&adapter->pend_cmds));
2258#if MEGA_HAVE_STATS
2259 for(i = 0; i < adapter->numldrv; i++) {
2260 len += sprintf(page+len, "Logical Drive %d:\n", i);
2261
2262 len += sprintf(page+len,
2263 "\tReads Issued = %lu, Writes Issued = %lu\n",
2264 adapter->nreads[i], adapter->nwrites[i]);
2265
2266 len += sprintf(page+len,
2267 "\tSectors Read = %lu, Sectors Written = %lu\n",
2268 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2269
2270 len += sprintf(page+len,
2271 "\tRead errors = %lu, Write errors = %lu\n\n",
2272 adapter->rd_errors[i], adapter->wr_errors[i]);
2273 }
2274#else
2275 len += sprintf(page+len,
2276 "IO and error counters not compiled in driver.\n");
2277#endif
2278
2279 *eof = 1;
2280
2281 return len;
2282}
2283
2284
2285/**
2286 * proc_read_mbox()
2287 * @page - buffer to write the data in
2288 * @start - where the actual data has been written in page
2289 * @offset - same meaning as the read system call
2290 * @count - same meaning as the read system call
2291 * @eof - set if no more data needs to be returned
2292 * @data - pointer to our soft state
2293 *
2294 * Display mailbox information for the last command issued. This information
2295 * is good for debugging.
2296 */
2297static int
2298proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2299 void *data)
2300{
2301
2302 adapter_t *adapter = (adapter_t *)data;
2303 volatile mbox_t *mbox = adapter->mbox;
2304 int len = 0;
2305
2306 len = sprintf(page, "Contents of Mail Box Structure\n");
2307 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2308 mbox->m_out.cmd);
2309 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2310 mbox->m_out.cmdid);
2311 len += sprintf(page+len, " No of Sectors= %04d\n",
2312 mbox->m_out.numsectors);
2313 len += sprintf(page+len, " LBA = 0x%02x\n",
2314 mbox->m_out.lba);
2315 len += sprintf(page+len, " DTA = 0x%08x\n",
2316 mbox->m_out.xferaddr);
2317 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2318 mbox->m_out.logdrv);
2319 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2320 mbox->m_out.numsgelements);
2321 len += sprintf(page+len, " Busy = %01x\n",
2322 mbox->m_in.busy);
2323 len += sprintf(page+len, " Status = 0x%02x\n",
2324 mbox->m_in.status);
2325
2326 *eof = 1;
2327
2328 return len;
2329}
2330
2331
2332/**
2333 * proc_rebuild_rate()
2334 * @page - buffer to write the data in
2335 * @start - where the actual data has been written in page
2336 * @offset - same meaning as the read system call
2337 * @count - same meaning as the read system call
2338 * @eof - set if no more data needs to be returned
2339 * @data - pointer to our soft state
2340 *
2341 * Display current rebuild rate
2342 */
2343static int
2344proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2345 void *data)
2346{
2347 adapter_t *adapter = (adapter_t *)data;
2348 dma_addr_t dma_handle;
2349 caddr_t inquiry;
2350 struct pci_dev *pdev;
2351 int len = 0;
2352
2353 if( make_local_pdev(adapter, &pdev) != 0 ) {
2354 *eof = 1;
2355 return len;
2356 }
2357
2358 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2359 free_local_pdev(pdev);
2360 *eof = 1;
2361 return len;
2362 }
2363
2364 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2365
2366 len = sprintf(page, "Adapter inquiry failed.\n");
2367
2368 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2369
2370 mega_free_inquiry(inquiry, dma_handle, pdev);
2371
2372 free_local_pdev(pdev);
2373
2374 *eof = 1;
2375
2376 return len;
2377 }
2378
2379 if( adapter->flag & BOARD_40LD ) {
2380 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2381 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2382 }
2383 else {
2384 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2385 ((mraid_ext_inquiry *)
2386 inquiry)->raid_inq.adapter_info.rebuild_rate);
2387 }
2388
2389
2390 mega_free_inquiry(inquiry, dma_handle, pdev);
2391
2392 free_local_pdev(pdev);
2393
2394 *eof = 1;
2395
2396 return len;
2397}
2398
2399
2400/**
2401 * proc_battery()
2402 * @page - buffer to write the data in
2403 * @start - where the actual data has been written in page
2404 * @offset - same meaning as the read system call
2405 * @count - same meaning as the read system call
2406 * @eof - set if no more data needs to be returned
2407 * @data - pointer to our soft state
2408 *
2409 * Display information about the battery module on the controller.
2410 */
2411static int
2412proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2413 void *data)
2414{
2415 adapter_t *adapter = (adapter_t *)data;
2416 dma_addr_t dma_handle;
2417 caddr_t inquiry;
2418 struct pci_dev *pdev;
2419 u8 battery_status = 0;
2420 char str[256];
2421 int len = 0;
2422
2423 if( make_local_pdev(adapter, &pdev) != 0 ) {
2424 *eof = 1;
2425 return len;
2426 }
2427
2428 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2429 free_local_pdev(pdev);
2430 *eof = 1;
2431 return len;
2432 }
2433
2434 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2435
2436 len = sprintf(page, "Adapter inquiry failed.\n");
2437
2438 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2439
2440 mega_free_inquiry(inquiry, dma_handle, pdev);
2441
2442 free_local_pdev(pdev);
2443
2444 *eof = 1;
2445
2446 return len;
2447 }
2448
2449 if( adapter->flag & BOARD_40LD ) {
2450 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2451 }
2452 else {
2453 battery_status = ((mraid_ext_inquiry *)inquiry)->
2454 raid_inq.adapter_info.battery_status;
2455 }
2456
2457 /*
2458 * Decode the battery status
2459 */
2460 sprintf(str, "Battery Status:[%d]", battery_status);
2461
2462 if(battery_status == MEGA_BATT_CHARGE_DONE)
2463 strcat(str, " Charge Done");
2464
2465 if(battery_status & MEGA_BATT_MODULE_MISSING)
2466 strcat(str, " Module Missing");
2467
2468 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2469 strcat(str, " Low Voltage");
2470
2471 if(battery_status & MEGA_BATT_TEMP_HIGH)
2472 strcat(str, " Temperature High");
2473
2474 if(battery_status & MEGA_BATT_PACK_MISSING)
2475 strcat(str, " Pack Missing");
2476
2477 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2478 strcat(str, " Charge In-progress");
2479
2480 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2481 strcat(str, " Charge Fail");
2482
2483 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2484 strcat(str, " Cycles Exceeded");
2485
2486 len = sprintf(page, "%s\n", str);
2487
2488
2489 mega_free_inquiry(inquiry, dma_handle, pdev);
2490
2491 free_local_pdev(pdev);
2492
2493 *eof = 1;
2494
2495 return len;
2496}
2497
2498
2499/**
2500 * proc_pdrv_ch0()
2501 * @page - buffer to write the data in
2502 * @start - where the actual data has been written in page
2503 * @offset - same meaning as the read system call
2504 * @count - same meaning as the read system call
2505 * @eof - set if no more data needs to be returned
2506 * @data - pointer to our soft state
2507 *
2508 * Display information about the physical drives on physical channel 0.
2509 */
2510static int
2511proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2512 void *data)
2513{
2514 adapter_t *adapter = (adapter_t *)data;
2515
2516 *eof = 1;
2517
2518 return (proc_pdrv(adapter, page, 0));
2519}
2520
2521
2522/**
2523 * proc_pdrv_ch1()
2524 * @page - buffer to write the data in
2525 * @start - where the actual data has been written in page
2526 * @offset - same meaning as the read system call
2527 * @count - same meaning as the read system call
2528 * @eof - set if no more data needs to be returned
2529 * @data - pointer to our soft state
2530 *
2531 * Display information about the physical drives on physical channel 1.
2532 */
2533static int
2534proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2535 void *data)
2536{
2537 adapter_t *adapter = (adapter_t *)data;
2538
2539 *eof = 1;
2540
2541 return (proc_pdrv(adapter, page, 1));
2542}
2543
2544
2545/**
2546 * proc_pdrv_ch2()
2547 * @page - buffer to write the data in
2548 * @start - where the actual data has been written in page
2549 * @offset - same meaning as the read system call
2550 * @count - same meaning as the read system call
2551 * @eof - set if no more data needs to be returned
2552 * @data - pointer to our soft state
2553 *
2554 * Display information about the physical drives on physical channel 2.
2555 */
2556static int
2557proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2558 void *data)
2559{
2560 adapter_t *adapter = (adapter_t *)data;
2561
2562 *eof = 1;
2563
2564 return (proc_pdrv(adapter, page, 2));
2565}
2566
2567
2568/**
2569 * proc_pdrv_ch3()
2570 * @page - buffer to write the data in
2571 * @start - where the actual data has been written in page
2572 * @offset - same meaning as the read system call
2573 * @count - same meaning as the read system call
2574 * @eof - set if no more data needs to be returned
2575 * @data - pointer to our soft state
2576 *
2577 * Display information about the physical drives on physical channel 3.
2578 */
2579static int
2580proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2581 void *data)
2582{
2583 adapter_t *adapter = (adapter_t *)data;
2584
2585 *eof = 1;
2586
2587 return (proc_pdrv(adapter, page, 3));
2588}
2589
2590
2591/**
2592 * proc_pdrv()
2593 * @page - buffer to write the data in
2594 * @adapter - pointer to our soft state
2595 *
2596 * Display information about the physical drives.
2597 */
2598static int
2599proc_pdrv(adapter_t *adapter, char *page, int channel)
2600{
2601 dma_addr_t dma_handle;
2602 char *scsi_inq;
2603 dma_addr_t scsi_inq_dma_handle;
2604 caddr_t inquiry;
2605 struct pci_dev *pdev;
2606 u8 *pdrv_state;
2607 u8 state;
2608 int tgt;
2609 int max_channels;
2610 int len = 0;
2611 char str[80];
2612 int i;
2613
2614 if( make_local_pdev(adapter, &pdev) != 0 ) {
2615 return len;
2616 }
2617
2618 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2619 goto free_pdev;
2620 }
2621
2622 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2623 len = sprintf(page, "Adapter inquiry failed.\n");
2624
2625 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2626
2627 goto free_inquiry;
2628 }
2629
2630
2631 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2632
2633 if( scsi_inq == NULL ) {
2634 len = sprintf(page, "memory not available for scsi inq.\n");
2635
2636 goto free_inquiry;
2637 }
2638
2639 if( adapter->flag & BOARD_40LD ) {
2640 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2641 }
2642 else {
2643 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2644 raid_inq.pdrv_info.pdrv_state;
2645 }
2646
2647 max_channels = adapter->product_info.nchannels;
2648
2649 if( channel >= max_channels ) {
2650 goto free_pci;
2651 }
2652
2653 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2654
2655 i = channel*16 + tgt;
2656
2657 state = *(pdrv_state + i);
2658
2659 switch( state & 0x0F ) {
2660
2661 case PDRV_ONLINE:
2662 sprintf(str,
2663 "Channel:%2d Id:%2d State: Online",
2664 channel, tgt);
2665 break;
2666
2667 case PDRV_FAILED:
2668 sprintf(str,
2669 "Channel:%2d Id:%2d State: Failed",
2670 channel, tgt);
2671 break;
2672
2673 case PDRV_RBLD:
2674 sprintf(str,
2675 "Channel:%2d Id:%2d State: Rebuild",
2676 channel, tgt);
2677 break;
2678
2679 case PDRV_HOTSPARE:
2680 sprintf(str,
2681 "Channel:%2d Id:%2d State: Hot spare",
2682 channel, tgt);
2683 break;
2684
2685 default:
2686 sprintf(str,
2687 "Channel:%2d Id:%2d State: Un-configured",
2688 channel, tgt);
2689 break;
2690
2691 }
2692
2693 /*
2694 * This interface displays inquiries for disk drives
2695 * only. Inquries for logical drives and non-disk
2696 * devices are available through /proc/scsi/scsi
2697 */
2698 memset(scsi_inq, 0, 256);
2699 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2700 scsi_inq_dma_handle) ||
2701 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2702 continue;
2703 }
2704
2705 /*
2706 * Check for overflow. We print less than 240
2707 * characters for inquiry
2708 */
2709 if( (len + 240) >= PAGE_SIZE ) break;
2710
2711 len += sprintf(page+len, "%s.\n", str);
2712
2713 len += mega_print_inquiry(page+len, scsi_inq);
2714 }
2715
2716free_pci:
2717 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2718free_inquiry:
2719 mega_free_inquiry(inquiry, dma_handle, pdev);
2720free_pdev:
2721 free_local_pdev(pdev);
2722
2723 return len;
2724}
2725
2726
2727/*
2728 * Display scsi inquiry
2729 */
2730static int
2731mega_print_inquiry(char *page, char *scsi_inq)
2732{
2733 int len = 0;
2734 int i;
2735
2736 len = sprintf(page, " Vendor: ");
2737 for( i = 8; i < 16; i++ ) {
2738 len += sprintf(page+len, "%c", scsi_inq[i]);
2739 }
2740
2741 len += sprintf(page+len, " Model: ");
2742
2743 for( i = 16; i < 32; i++ ) {
2744 len += sprintf(page+len, "%c", scsi_inq[i]);
2745 }
2746
2747 len += sprintf(page+len, " Rev: ");
2748
2749 for( i = 32; i < 36; i++ ) {
2750 len += sprintf(page+len, "%c", scsi_inq[i]);
2751 }
2752
2753 len += sprintf(page+len, "\n");
2754
2755 i = scsi_inq[0] & 0x1f;
2756
4ff36718 2757 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
1da177e4
LT		 2758
2759 len += sprintf(page+len,
2760 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2761
2762 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2763 len += sprintf(page+len, " CCS\n");
2764 else
2765 len += sprintf(page+len, "\n");
2766
2767 return len;
2768}
2769
2770
2771/**
2772 * proc_rdrv_10()
2773 * @page - buffer to write the data in
2774 * @start - where the actual data has been written in page
2775 * @offset - same meaning as the read system call
2776 * @count - same meaning as the read system call
2777 * @eof - set if no more data needs to be returned
2778 * @data - pointer to our soft state
2779 *
2780 * Display real time information about the logical drives 0 through 9.
2781 */
2782static int
2783proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2784 void *data)
2785{
2786 adapter_t *adapter = (adapter_t *)data;
2787
2788 *eof = 1;
2789
2790 return (proc_rdrv(adapter, page, 0, 9));
2791}
2792
2793
2794/**
2795 * proc_rdrv_20()
2796 * @page - buffer to write the data in
2797 * @start - where the actual data has been written in page
2798 * @offset - same meaning as the read system call
2799 * @count - same meaning as the read system call
2800 * @eof - set if no more data needs to be returned
2801 * @data - pointer to our soft state
2802 *
2803 * Display real time information about the logical drives 0 through 9.
2804 */
2805static int
2806proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2807 void *data)
2808{
2809 adapter_t *adapter = (adapter_t *)data;
2810
2811 *eof = 1;
2812
2813 return (proc_rdrv(adapter, page, 10, 19));
2814}
2815
2816
2817/**
2818 * proc_rdrv_30()
2819 * @page - buffer to write the data in
2820 * @start - where the actual data has been written in page
2821 * @offset - same meaning as the read system call
2822 * @count - same meaning as the read system call
2823 * @eof - set if no more data needs to be returned
2824 * @data - pointer to our soft state
2825 *
2826 * Display real time information about the logical drives 0 through 9.
2827 */
2828static int
2829proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2830 void *data)
2831{
2832 adapter_t *adapter = (adapter_t *)data;
2833
2834 *eof = 1;
2835
2836 return (proc_rdrv(adapter, page, 20, 29));
2837}
2838
2839
2840/**
2841 * proc_rdrv_40()
2842 * @page - buffer to write the data in
2843 * @start - where the actual data has been written in page
2844 * @offset - same meaning as the read system call
2845 * @count - same meaning as the read system call
2846 * @eof - set if no more data needs to be returned
2847 * @data - pointer to our soft state
2848 *
2849 * Display real time information about the logical drives 0 through 9.
2850 */
2851static int
2852proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2853 void *data)
2854{
2855 adapter_t *adapter = (adapter_t *)data;
2856
2857 *eof = 1;
2858
2859 return (proc_rdrv(adapter, page, 30, 39));
2860}
2861
2862
2863/**
2864 * proc_rdrv()
2865 * @page - buffer to write the data in
2866 * @adapter - pointer to our soft state
2867 * @start - starting logical drive to display
2868 * @end - ending logical drive to display
2869 *
2870 * We do not print the inquiry information since its already available through
2871 * /proc/scsi/scsi interface
2872 */
2873static int
2874proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2875{
2876 dma_addr_t dma_handle;
2877 logdrv_param *lparam;
2878 megacmd_t mc;
2879 char *disk_array;
2880 dma_addr_t disk_array_dma_handle;
2881 caddr_t inquiry;
2882 struct pci_dev *pdev;
2883 u8 *rdrv_state;
2884 int num_ldrv;
2885 u32 array_sz;
2886 int len = 0;
2887 int i;
2888
2889 if( make_local_pdev(adapter, &pdev) != 0 ) {
2890 return len;
2891 }
2892
2893 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2894 free_local_pdev(pdev);
2895 return len;
2896 }
2897
2898 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2899
2900 len = sprintf(page, "Adapter inquiry failed.\n");
2901
2902 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2903
2904 mega_free_inquiry(inquiry, dma_handle, pdev);
2905
2906 free_local_pdev(pdev);
2907
2908 return len;
2909 }
2910
2911 memset(&mc, 0, sizeof(megacmd_t));
2912
2913 if( adapter->flag & BOARD_40LD ) {
2914 array_sz = sizeof(disk_array_40ld);
2915
2916 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2917
2918 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2919 }
2920 else {
2921 array_sz = sizeof(disk_array_8ld);
2922
2923 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2924 raid_inq.logdrv_info.ldrv_state;
2925
2926 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2927 raid_inq.logdrv_info.num_ldrv;
2928 }
2929
2930 disk_array = pci_alloc_consistent(pdev, array_sz,
2931 &disk_array_dma_handle);
2932
2933 if( disk_array == NULL ) {
2934 len = sprintf(page, "memory not available.\n");
2935
2936 mega_free_inquiry(inquiry, dma_handle, pdev);
2937
2938 free_local_pdev(pdev);
2939
2940 return len;
2941 }
2942
2943 mc.xferaddr = (u32)disk_array_dma_handle;
2944
2945 if( adapter->flag & BOARD_40LD ) {
2946 mc.cmd = FC_NEW_CONFIG;
2947 mc.opcode = OP_DCMD_READ_CONFIG;
2948
cb0258a2 2949 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 2950
2951 len = sprintf(page, "40LD read config failed.\n");
2952
2953 mega_free_inquiry(inquiry, dma_handle, pdev);
2954
2955 pci_free_consistent(pdev, array_sz, disk_array,
2956 disk_array_dma_handle);
2957
2958 free_local_pdev(pdev);
2959
2960 return len;
2961 }
2962
2963 }
2964 else {
2965 mc.cmd = NEW_READ_CONFIG_8LD;
2966
cb0258a2 2967 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 2968
2969 mc.cmd = READ_CONFIG_8LD;
2970
cb0258a2 2971 if( mega_internal_command(adapter, &mc,
1da177e4
LT		 2972 NULL) ){
2973
2974 len = sprintf(page,
2975 "8LD read config failed.\n");
2976
2977 mega_free_inquiry(inquiry, dma_handle, pdev);
2978
2979 pci_free_consistent(pdev, array_sz,
2980 disk_array,
2981 disk_array_dma_handle);
2982
2983 free_local_pdev(pdev);
2984
2985 return len;
2986 }
2987 }
2988 }
2989
2990 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2991
2992 if( adapter->flag & BOARD_40LD ) {
2993 lparam =
2994 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2995 }
2996 else {
2997 lparam =
2998 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2999 }
3000
3001 /*
3002 * Check for overflow. We print less than 240 characters for
3003 * information about each logical drive.
3004 */
3005 if( (len + 240) >= PAGE_SIZE ) break;
3006
3007 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3008
3009 switch( rdrv_state[i] & 0x0F ) {
3010 case RDRV_OFFLINE:
3011 len += sprintf(page+len, "state: offline");
3012 break;
3013
3014 case RDRV_DEGRADED:
3015 len += sprintf(page+len, "state: degraded");
3016 break;
3017
3018 case RDRV_OPTIMAL:
3019 len += sprintf(page+len, "state: optimal");
3020 break;
3021
3022 case RDRV_DELETED:
3023 len += sprintf(page+len, "state: deleted");
3024 break;
3025
3026 default:
3027 len += sprintf(page+len, "state: unknown");
3028 break;
3029 }
3030
3031 /*
3032 * Check if check consistency or initialization is going on
3033 * for this logical drive.
3034 */
3035 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3036 len += sprintf(page+len,
3037 ", check-consistency in progress");
3038 }
3039 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3040 len += sprintf(page+len,
3041 ", initialization in progress");
3042 }
3043
3044 len += sprintf(page+len, "\n");
3045
3046 len += sprintf(page+len, "Span depth:%3d, ",
3047 lparam->span_depth);
3048
3049 len += sprintf(page+len, "RAID level:%3d, ",
3050 lparam->level);
3051
3052 len += sprintf(page+len, "Stripe size:%3d, ",
3053 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3054
3055 len += sprintf(page+len, "Row size:%3d\n",
3056 lparam->row_size);
3057
3058
3059 len += sprintf(page+len, "Read Policy: ");
3060
3061 switch(lparam->read_ahead) {
3062
3063 case NO_READ_AHEAD:
3064 len += sprintf(page+len, "No read ahead, ");
3065 break;
3066
3067 case READ_AHEAD:
3068 len += sprintf(page+len, "Read ahead, ");
3069 break;
3070
3071 case ADAP_READ_AHEAD:
3072 len += sprintf(page+len, "Adaptive, ");
3073 break;
3074
3075 }
3076
3077 len += sprintf(page+len, "Write Policy: ");
3078
3079 switch(lparam->write_mode) {
3080
3081 case WRMODE_WRITE_THRU:
3082 len += sprintf(page+len, "Write thru, ");
3083 break;
3084
3085 case WRMODE_WRITE_BACK:
3086 len += sprintf(page+len, "Write back, ");
3087 break;
3088 }
3089
3090 len += sprintf(page+len, "Cache Policy: ");
3091
3092 switch(lparam->direct_io) {
3093
3094 case CACHED_IO:
3095 len += sprintf(page+len, "Cached IO\n\n");
3096 break;
3097
3098 case DIRECT_IO:
3099 len += sprintf(page+len, "Direct IO\n\n");
3100 break;
3101 }
3102 }
3103
3104 mega_free_inquiry(inquiry, dma_handle, pdev);
3105
3106 pci_free_consistent(pdev, array_sz, disk_array,
3107 disk_array_dma_handle);
3108
3109 free_local_pdev(pdev);
3110
3111 return len;
3112}
84a3c97b 3113#else
3114static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3115{
3116}
1da177e4
LT		 3117#endif
3118
3119
3120/**
3121 * megaraid_biosparam()
3122 *
3123 * Return the disk geometry for a particular disk
3124 */
3125static int
3126megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3127 sector_t capacity, int geom[])
3128{
3129 adapter_t *adapter;
3130 unsigned char *bh;
3131 int heads;
3132 int sectors;
3133 int cylinders;
3134 int rval;
3135
3136 /* Get pointer to host config structure */
3137 adapter = (adapter_t *)sdev->host->hostdata;
3138
3139 if (IS_RAID_CH(adapter, sdev->channel)) {
3140 /* Default heads (64) & sectors (32) */
3141 heads = 64;
3142 sectors = 32;
3143 cylinders = (ulong)capacity / (heads * sectors);
3144
3145 /*
3146 * Handle extended translation size for logical drives
3147 * > 1Gb
3148 */
3149 if ((ulong)capacity >= 0x200000) {
3150 heads = 255;
3151 sectors = 63;
3152 cylinders = (ulong)capacity / (heads * sectors);
3153 }
3154
3155 /* return result */
3156 geom[0] = heads;
3157 geom[1] = sectors;
3158 geom[2] = cylinders;
3159 }
3160 else {
3161 bh = scsi_bios_ptable(bdev);
3162
3163 if( bh ) {
3164 rval = scsi_partsize(bh, capacity,
3165 &geom[2], &geom[0], &geom[1]);
3166 kfree(bh);
3167 if( rval != -1 )
3168 return rval;
3169 }
3170
3171 printk(KERN_INFO
3172 "megaraid: invalid partition on this disk on channel %d\n",
3173 sdev->channel);
3174
3175 /* Default heads (64) & sectors (32) */
3176 heads = 64;
3177 sectors = 32;
3178 cylinders = (ulong)capacity / (heads * sectors);
3179
3180 /* Handle extended translation size for logical drives > 1Gb */
3181 if ((ulong)capacity >= 0x200000) {
3182 heads = 255;
3183 sectors = 63;
3184 cylinders = (ulong)capacity / (heads * sectors);
3185 }
3186
3187 /* return result */
3188 geom[0] = heads;
3189 geom[1] = sectors;
3190 geom[2] = cylinders;
3191 }
3192
3193 return 0;
3194}
3195
3196/**
3197 * mega_init_scb()
3198 * @adapter - pointer to our soft state
3199 *
3200 * Allocate memory for the various pointers in the scb structures:
3201 * scatter-gather list pointer, passthru and extended passthru structure
3202 * pointers.
3203 */
3204static int
3205mega_init_scb(adapter_t *adapter)
3206{
3207 scb_t *scb;
3208 int i;
3209
3210 for( i = 0; i < adapter->max_cmds; i++ ) {
3211
3212 scb = &adapter->scb_list[i];
3213
3214 scb->sgl64 = NULL;
3215 scb->sgl = NULL;
3216 scb->pthru = NULL;
3217 scb->epthru = NULL;
3218 }
3219
3220 for( i = 0; i < adapter->max_cmds; i++ ) {
3221
3222 scb = &adapter->scb_list[i];
3223
3224 scb->idx = i;
3225
3226 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3227 sizeof(mega_sgl64) * adapter->sglen,
3228 &scb->sgl_dma_addr);
3229
3230 scb->sgl = (mega_sglist *)scb->sgl64;
3231
3232 if( !scb->sgl ) {
3233 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3234 mega_free_sgl(adapter);
3235 return -1;
3236 }
3237
3238 scb->pthru = pci_alloc_consistent(adapter->dev,
3239 sizeof(mega_passthru),
3240 &scb->pthru_dma_addr);
3241
3242 if( !scb->pthru ) {
3243 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3244 mega_free_sgl(adapter);
3245 return -1;
3246 }
3247
3248 scb->epthru = pci_alloc_consistent(adapter->dev,
3249 sizeof(mega_ext_passthru),
3250 &scb->epthru_dma_addr);
3251
3252 if( !scb->epthru ) {
3253 printk(KERN_WARNING
3254 "Can't allocate extended passthru.\n");
3255 mega_free_sgl(adapter);
3256 return -1;
3257 }
3258
3259
3260 scb->dma_type = MEGA_DMA_TYPE_NONE;
3261
3262 /*
3263 * Link to free list
3264 * lock not required since we are loading the driver, so no
3265 * commands possible right now.
3266 */
3267 scb->state = SCB_FREE;
3268 scb->cmd = NULL;
3269 list_add(&scb->list, &adapter->free_list);
3270 }
3271
3272 return 0;
3273}
3274
3275
3276/**
3277 * megadev_open()
3278 * @inode - unused
3279 * @filep - unused
3280 *
3281 * Routines for the character/ioctl interface to the driver. Find out if this
d21c95c5 3282 * is a valid open.
1da177e4
LT		 3283 */
3284static int
3285megadev_open (struct inode *inode, struct file *filep)
3286{
3287 /*
3288 * Only allow superuser to access private ioctl interface
3289 */
3290 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3291
3292 return 0;
3293}
3294
3295
3296/**
3297 * megadev_ioctl()
3298 * @inode - Our device inode
3299 * @filep - unused
3300 * @cmd - ioctl command
3301 * @arg - user buffer
3302 *
3303 * ioctl entry point for our private ioctl interface. We move the data in from
3304 * the user space, prepare the command (if necessary, convert the old MIMD
3305 * ioctl to new ioctl command), and issue a synchronous command to the
3306 * controller.
3307 */
3308static int
f4927c45 3309megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
1da177e4
LT		 3310{
3311 adapter_t *adapter;
3312 nitioctl_t uioc;
3313 int adapno;
3314 int rval;
3315 mega_passthru __user *upthru; /* user address for passthru */
3316 mega_passthru *pthru; /* copy user passthru here */
3317 dma_addr_t pthru_dma_hndl;
3318 void *data = NULL; /* data to be transferred */
3319 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3320 megacmd_t mc;
3321 megastat_t __user *ustats;
3322 int num_ldrv;
3323 u32 uxferaddr = 0;
3324 struct pci_dev *pdev;
3325
3326 ustats = NULL; /* avoid compilation warnings */
3327 num_ldrv = 0;
3328
3329 /*
3330 * Make sure only USCSICMD are issued through this interface.
3331 * MIMD application would still fire different command.
3332 */
3333 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3334 return -EINVAL;
3335 }
3336
3337 /*
3338 * Check and convert a possible MIMD command to NIT command.
3339 * mega_m_to_n() copies the data from the user space, so we do not
3340 * have to do it here.
3341 * NOTE: We will need some user address to copyout the data, therefore
3342 * the inteface layer will also provide us with the required user
3343 * addresses.
3344 */
3345 memset(&uioc, 0, sizeof(nitioctl_t));
3346 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3347 return rval;
3348
3349
3350 switch( uioc.opcode ) {
3351
3352 case GET_DRIVER_VER:
3353 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3354 return (-EFAULT);
3355
3356 break;
3357
3358 case GET_N_ADAP:
3359 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3360 return (-EFAULT);
3361
3362 /*
3363 * Shucks. MIMD interface returns a positive value for number
3364 * of adapters. TODO: Change it to return 0 when there is no
3365 * applicatio using mimd interface.
3366 */
3367 return hba_count;
3368
3369 case GET_ADAP_INFO:
3370
3371 /*
3372 * Which adapter
3373 */
3374 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3375 return (-ENODEV);
3376
3377 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3378 sizeof(struct mcontroller)) )
3379 return (-EFAULT);
3380 break;
3381
3382#if MEGA_HAVE_STATS
3383
3384 case GET_STATS:
3385 /*
3386 * Which adapter
3387 */
3388 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3389 return (-ENODEV);
3390
3391 adapter = hba_soft_state[adapno];
3392
3393 ustats = uioc.uioc_uaddr;
3394
3395 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3396 return (-EFAULT);
3397
3398 /*
3399 * Check for the validity of the logical drive number
3400 */
3401 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3402
3403 if( copy_to_user(ustats->nreads, adapter->nreads,
3404 num_ldrv*sizeof(u32)) )
3405 return -EFAULT;
3406
3407 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3408 num_ldrv*sizeof(u32)) )
3409 return -EFAULT;
3410
3411 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3412 num_ldrv*sizeof(u32)) )
3413 return -EFAULT;
3414
3415 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3416 num_ldrv*sizeof(u32)) )
3417 return -EFAULT;
3418
3419 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3420 num_ldrv*sizeof(u32)) )
3421 return -EFAULT;
3422
3423 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3424 num_ldrv*sizeof(u32)) )
3425 return -EFAULT;
3426
3427 return 0;
3428
3429#endif
3430 case MBOX_CMD:
3431
3432 /*
3433 * Which adapter
3434 */
3435 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3436 return (-ENODEV);
3437
3438 adapter = hba_soft_state[adapno];
3439
3440 /*
3441 * Deletion of logical drive is a special case. The adapter
3442 * should be quiescent before this command is issued.
3443 */
3444 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3445 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3446
3447 /*
3448 * Do we support this feature
3449 */
3450 if( !adapter->support_random_del ) {
3451 printk(KERN_WARNING "megaraid: logdrv ");
3452 printk("delete on non-supporting F/W.\n");
3453
3454 return (-EINVAL);
3455 }
3456
3457 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3458
3459 if( rval == 0 ) {
3460 memset(&mc, 0, sizeof(megacmd_t));
3461
3462 mc.status = rval;
3463
3464 rval = mega_n_to_m((void __user *)arg, &mc);
3465 }
3466
3467 return rval;
3468 }
3469 /*
3470 * This interface only support the regular passthru commands.
3471 * Reject extended passthru and 64-bit passthru
3472 */
3473 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3474 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3475
3476 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3477
3478 return (-EINVAL);
3479 }
3480
3481 /*
3482 * For all internal commands, the buffer must be allocated in
3483 * <4GB address range
3484 */
3485 if( make_local_pdev(adapter, &pdev) != 0 )
3486 return -EIO;
3487
3488 /* Is it a passthru command or a DCMD */
3489 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3490 /* Passthru commands */
3491
3492 pthru = pci_alloc_consistent(pdev,
3493 sizeof(mega_passthru),
3494 &pthru_dma_hndl);
3495
3496 if( pthru == NULL ) {
3497 free_local_pdev(pdev);
3498 return (-ENOMEM);
3499 }
3500
3501 /*
3502 * The user passthru structure
3503 */
de5952e9 3504 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
1da177e4
LT		 3505
3506 /*
3507 * Copy in the user passthru here.
3508 */
3509 if( copy_from_user(pthru, upthru,
3510 sizeof(mega_passthru)) ) {
3511
3512 pci_free_consistent(pdev,
3513 sizeof(mega_passthru), pthru,
3514 pthru_dma_hndl);
3515
3516 free_local_pdev(pdev);
3517
3518 return (-EFAULT);
3519 }
3520
3521 /*
3522 * Is there a data transfer
3523 */
3524 if( pthru->dataxferlen ) {
3525 data = pci_alloc_consistent(pdev,
3526 pthru->dataxferlen,
3527 &data_dma_hndl);
3528
3529 if( data == NULL ) {
3530 pci_free_consistent(pdev,
3531 sizeof(mega_passthru),
3532 pthru,
3533 pthru_dma_hndl);
3534
3535 free_local_pdev(pdev);
3536
3537 return (-ENOMEM);
3538 }
3539
3540 /*
3541 * Save the user address and point the kernel
3542 * address at just allocated memory
3543 */
3544 uxferaddr = pthru->dataxferaddr;
3545 pthru->dataxferaddr = data_dma_hndl;
3546 }
3547
3548
3549 /*
3550 * Is data coming down-stream
3551 */
3552 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3553 /*
3554 * Get the user data
3555 */
de5952e9 3556 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
1da177e4
LT		 3557 pthru->dataxferlen) ) {
3558 rval = (-EFAULT);
3559 goto freemem_and_return;
3560 }
3561 }
3562
3563 memset(&mc, 0, sizeof(megacmd_t));
3564
3565 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3566 mc.xferaddr = (u32)pthru_dma_hndl;
3567
3568 /*
3569 * Issue the command
3570 */
cb0258a2 3571 mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 3572
3573 rval = mega_n_to_m((void __user *)arg, &mc);
3574
3575 if( rval ) goto freemem_and_return;
3576
3577
3578 /*
3579 * Is data going up-stream
3580 */
3581 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
de5952e9 3582 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
1da177e4
LT		 3583 pthru->dataxferlen) ) {
3584 rval = (-EFAULT);
3585 }
3586 }
3587
3588 /*
3589 * Send the request sense data also, irrespective of
3590 * whether the user has asked for it or not.
3591 */
2d2f8d59
JJ		 3592 if (copy_to_user(upthru->reqsensearea,
3593 pthru->reqsensearea, 14))
3594 rval = -EFAULT;
1da177e4
LT		 3595
3596freemem_and_return:
3597 if( pthru->dataxferlen ) {
3598 pci_free_consistent(pdev,
3599 pthru->dataxferlen, data,
3600 data_dma_hndl);
3601 }
3602
3603 pci_free_consistent(pdev, sizeof(mega_passthru),
3604 pthru, pthru_dma_hndl);
3605
3606 free_local_pdev(pdev);
3607
3608 return rval;
3609 }
3610 else {
3611 /* DCMD commands */
3612
3613 /*
3614 * Is there a data transfer
3615 */
3616 if( uioc.xferlen ) {
3617 data = pci_alloc_consistent(pdev,
3618 uioc.xferlen, &data_dma_hndl);
3619
3620 if( data == NULL ) {
3621 free_local_pdev(pdev);
3622 return (-ENOMEM);
3623 }
3624
3625 uxferaddr = MBOX(uioc)->xferaddr;
3626 }
3627
3628 /*
3629 * Is data coming down-stream
3630 */
3631 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3632 /*
3633 * Get the user data
3634 */
de5952e9 3635 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
1da177e4
LT		 3636 uioc.xferlen) ) {
3637
3638 pci_free_consistent(pdev,
3639 uioc.xferlen,
3640 data, data_dma_hndl);
3641
3642 free_local_pdev(pdev);
3643
3644 return (-EFAULT);
3645 }
3646 }
3647
3648 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3649
3650 mc.xferaddr = (u32)data_dma_hndl;
3651
3652 /*
3653 * Issue the command
3654 */
cb0258a2 3655 mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 3656
3657 rval = mega_n_to_m((void __user *)arg, &mc);
3658
3659 if( rval ) {
3660 if( uioc.xferlen ) {
3661 pci_free_consistent(pdev,
3662 uioc.xferlen, data,
3663 data_dma_hndl);
3664 }
3665
3666 free_local_pdev(pdev);
3667
3668 return rval;
3669 }
3670
3671 /*
3672 * Is data going up-stream
3673 */
3674 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
de5952e9 3675 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
1da177e4
LT		 3676 uioc.xferlen) ) {
3677
3678 rval = (-EFAULT);
3679 }
3680 }
3681
3682 if( uioc.xferlen ) {
3683 pci_free_consistent(pdev,
3684 uioc.xferlen, data,
3685 data_dma_hndl);
3686 }
3687
3688 free_local_pdev(pdev);
3689
3690 return rval;
3691 }
3692
3693 default:
3694 return (-EINVAL);
3695 }
3696
3697 return 0;
3698}
3699
f4927c45
AB		 3700static long
3701megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3702{
3703 int ret;
3704
c45d15d2 3705 mutex_lock(&megadev_mutex);
f4927c45 3706 ret = megadev_ioctl(filep, cmd, arg);
c45d15d2 3707 mutex_unlock(&megadev_mutex);
f4927c45
AB		 3708
3709 return ret;
3710}
3711
1da177e4
LT		 3712/**
3713 * mega_m_to_n()
3714 * @arg - user address
3715 * @uioc - new ioctl structure
3716 *
3717 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3718 * structure
3719 *
3720 * Converts the older mimd ioctl structure to newer NIT structure
3721 */
3722static int
3723mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3724{
3725 struct uioctl_t uioc_mimd;
3726 char signature[8] = {0};
3727 u8 opcode;
3728 u8 subopcode;
3729
3730
3731 /*
3732 * check is the application conforms to NIT. We do not have to do much
3733 * in that case.
3734 * We exploit the fact that the signature is stored in the very
3735 * begining of the structure.
3736 */
3737
3738 if( copy_from_user(signature, arg, 7) )
3739 return (-EFAULT);
3740
3741 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3742
3743 /*
3744 * NOTE NOTE: The nit ioctl is still under flux because of
3745 * change of mailbox definition, in HPE. No applications yet
3746 * use this interface and let's not have applications use this
3747 * interface till the new specifitions are in place.
3748 */
3749 return -EINVAL;
3750#if 0
3751 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3752 return (-EFAULT);
3753 return 0;
3754#endif
3755 }
3756
3757 /*
3758 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3759 *
3760 * Get the user ioctl structure
3761 */
3762 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3763 return (-EFAULT);
3764
3765
3766 /*
3767 * Get the opcode and subopcode for the commands
3768 */
3769 opcode = uioc_mimd.ui.fcs.opcode;
3770 subopcode = uioc_mimd.ui.fcs.subopcode;
3771
3772 switch (opcode) {
3773 case 0x82:
3774
3775 switch (subopcode) {
3776
3777 case MEGAIOC_QDRVRVER: /* Query driver version */
3778 uioc->opcode = GET_DRIVER_VER;
3779 uioc->uioc_uaddr = uioc_mimd.data;
3780 break;
3781
3782 case MEGAIOC_QNADAP: /* Get # of adapters */
3783 uioc->opcode = GET_N_ADAP;
3784 uioc->uioc_uaddr = uioc_mimd.data;
3785 break;
3786
3787 case MEGAIOC_QADAPINFO: /* Get adapter information */
3788 uioc->opcode = GET_ADAP_INFO;
3789 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3790 uioc->uioc_uaddr = uioc_mimd.data;
3791 break;
3792
3793 default:
3794 return(-EINVAL);
3795 }
3796
3797 break;
3798
3799
3800 case 0x81:
3801
3802 uioc->opcode = MBOX_CMD;
3803 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3804
3805 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3806
3807 uioc->xferlen = uioc_mimd.ui.fcs.length;
3808
3809 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3810 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3811
3812 break;
3813
3814 case 0x80:
3815
3816 uioc->opcode = MBOX_CMD;
3817 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3818
3819 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3820
3821 /*
3822 * Choose the xferlen bigger of input and output data
3823 */
3824 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3825 uioc_mimd.outlen : uioc_mimd.inlen;
3826
3827 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3828 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3829
3830 break;
3831
3832 default:
3833 return (-EINVAL);
3834
3835 }
3836
3837 return 0;
3838}
3839
3840/*
3841 * mega_n_to_m()
3842 * @arg - user address
3843 * @mc - mailbox command
3844 *
3845 * Updates the status information to the application, depending on application
3846 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3847 */
3848static int
3849mega_n_to_m(void __user *arg, megacmd_t *mc)
3850{
3851 nitioctl_t __user *uiocp;
3852 megacmd_t __user *umc;
3853 mega_passthru __user *upthru;
3854 struct uioctl_t __user *uioc_mimd;
3855 char signature[8] = {0};
3856
3857 /*
3858 * check is the application conforms to NIT.
3859 */
3860 if( copy_from_user(signature, arg, 7) )
3861 return -EFAULT;
3862
3863 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3864
3865 uiocp = arg;
3866
3867 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3868 return (-EFAULT);
3869
3870 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3871
3872 umc = MBOX_P(uiocp);
3873
3874 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3875 return -EFAULT;
3876
3877 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3878 return (-EFAULT);
3879 }
3880 }
3881 else {
3882 uioc_mimd = arg;
3883
3884 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3885 return (-EFAULT);
3886
3887 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3888
3889 umc = (megacmd_t __user *)uioc_mimd->mbox;
3890
3891 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3892 return (-EFAULT);
3893
3894 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3895 return (-EFAULT);
3896 }
3897 }
3898
3899 return 0;
3900}
3901
3902
3903/*
3904 * MEGARAID 'FW' commands.
3905 */
3906
3907/**
3908 * mega_is_bios_enabled()
3909 * @adapter - pointer to our soft state
3910 *
3911 * issue command to find out if the BIOS is enabled for this controller
3912 */
3913static int
3914mega_is_bios_enabled(adapter_t *adapter)
3915{
3916 unsigned char raw_mbox[sizeof(struct mbox_out)];
3917 mbox_t *mbox;
3918 int ret;
3919
3920 mbox = (mbox_t *)raw_mbox;
3921
3922 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3923
3924 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3925
3926 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3927
3928 raw_mbox[0] = IS_BIOS_ENABLED;
3929 raw_mbox[2] = GET_BIOS;
3930
3931
3932 ret = issue_scb_block(adapter, raw_mbox);
3933
3934 return *(char *)adapter->mega_buffer;
3935}
3936
3937
3938/**
3939 * mega_enum_raid_scsi()
3940 * @adapter - pointer to our soft state
3941 *
3942 * Find out what channels are RAID/SCSI. This information is used to
3943 * differentiate the virtual channels and physical channels and to support
3944 * ROMB feature and non-disk devices.
3945 */
3946static void
3947mega_enum_raid_scsi(adapter_t *adapter)
3948{
3949 unsigned char raw_mbox[sizeof(struct mbox_out)];
3950 mbox_t *mbox;
3951 int i;
3952
3953 mbox = (mbox_t *)raw_mbox;
3954
3955 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3956
3957 /*
3958 * issue command to find out what channels are raid/scsi
3959 */
3960 raw_mbox[0] = CHNL_CLASS;
3961 raw_mbox[2] = GET_CHNL_CLASS;
3962
3963 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3964
3965 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3966
3967 /*
3968 * Non-ROMB firmware fail this command, so all channels
3969 * must be shown RAID
3970 */
3971 adapter->mega_ch_class = 0xFF;
3972
3973 if(!issue_scb_block(adapter, raw_mbox)) {
3974 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3975
3976 }
3977
3978 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3979 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3980 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3981 i);
3982 }
3983 else {
3984 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3985 i);
3986 }
3987 }
3988
3989 return;
3990}
3991
3992
3993/**
3994 * mega_get_boot_drv()
3995 * @adapter - pointer to our soft state
3996 *
3997 * Find out which device is the boot device. Note, any logical drive or any
3998 * phyical device (e.g., a CDROM) can be designated as a boot device.
3999 */
4000static void
4001mega_get_boot_drv(adapter_t *adapter)
4002{
4003 struct private_bios_data *prv_bios_data;
4004 unsigned char raw_mbox[sizeof(struct mbox_out)];
4005 mbox_t *mbox;
4006 u16 cksum = 0;
4007 u8 *cksum_p;
4008 u8 boot_pdrv;
4009 int i;
4010
4011 mbox = (mbox_t *)raw_mbox;
4012
4013 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4014
4015 raw_mbox[0] = BIOS_PVT_DATA;
4016 raw_mbox[2] = GET_BIOS_PVT_DATA;
4017
4018 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4019
4020 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4021
4022 adapter->boot_ldrv_enabled = 0;
4023 adapter->boot_ldrv = 0;
4024
4025 adapter->boot_pdrv_enabled = 0;
4026 adapter->boot_pdrv_ch = 0;
4027 adapter->boot_pdrv_tgt = 0;
4028
4029 if(issue_scb_block(adapter, raw_mbox) == 0) {
4030 prv_bios_data =
4031 (struct private_bios_data *)adapter->mega_buffer;
4032
4033 cksum = 0;
4034 cksum_p = (char *)prv_bios_data;
4035 for (i = 0; i < 14; i++ ) {
4036 cksum += (u16)(*cksum_p++);
4037 }
4038
4039 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4040
4041 /*
4042 * If MSB is set, a physical drive is set as boot
4043 * device
4044 */
4045 if( prv_bios_data->boot_drv & 0x80 ) {
4046 adapter->boot_pdrv_enabled = 1;
4047 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4048 adapter->boot_pdrv_ch = boot_pdrv / 16;
4049 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4050 }
4051 else {
4052 adapter->boot_ldrv_enabled = 1;
4053 adapter->boot_ldrv = prv_bios_data->boot_drv;
4054 }
4055 }
4056 }
4057
4058}
4059
4060/**
4061 * mega_support_random_del()
4062 * @adapter - pointer to our soft state
4063 *
4064 * Find out if this controller supports random deletion and addition of
4065 * logical drives
4066 */
4067static int
4068mega_support_random_del(adapter_t *adapter)
4069{
4070 unsigned char raw_mbox[sizeof(struct mbox_out)];
4071 mbox_t *mbox;
4072 int rval;
4073
4074 mbox = (mbox_t *)raw_mbox;
4075
4076 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4077
4078 /*
4079 * issue command
4080 */
4081 raw_mbox[0] = FC_DEL_LOGDRV;
4082 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4083
4084 rval = issue_scb_block(adapter, raw_mbox);
4085
4086 return !rval;
4087}
4088
4089
4090/**
4091 * mega_support_ext_cdb()
4092 * @adapter - pointer to our soft state
4093 *
4094 * Find out if this firmware support cdblen > 10
4095 */
4096static int
4097mega_support_ext_cdb(adapter_t *adapter)
4098{
4099 unsigned char raw_mbox[sizeof(struct mbox_out)];
4100 mbox_t *mbox;
4101 int rval;
4102
4103 mbox = (mbox_t *)raw_mbox;
4104
4105 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4106 /*
4107 * issue command to find out if controller supports extended CDBs.
4108 */
4109 raw_mbox[0] = 0xA4;
4110 raw_mbox[2] = 0x16;
4111
4112 rval = issue_scb_block(adapter, raw_mbox);
4113
4114 return !rval;
4115}
4116
4117
4118/**
4119 * mega_del_logdrv()
4120 * @adapter - pointer to our soft state
4121 * @logdrv - logical drive to be deleted
4122 *
4123 * Delete the specified logical drive. It is the responsibility of the user
4124 * app to let the OS know about this operation.
4125 */
4126static int
4127mega_del_logdrv(adapter_t *adapter, int logdrv)
4128{
4129 unsigned long flags;
4130 scb_t *scb;
4131 int rval;
4132
4133 /*
4134 * Stop sending commands to the controller, queue them internally.
4135 * When deletion is complete, ISR will flush the queue.
4136 */
4137 atomic_set(&adapter->quiescent, 1);
4138
4139 /*
4140 * Wait till all the issued commands are complete and there are no
4141 * commands in the pending queue
4142 */
4143 while (atomic_read(&adapter->pend_cmds) > 0 ||
4144 !list_empty(&adapter->pending_list))
4145 msleep(1000); /* sleep for 1s */
4146
4147 rval = mega_do_del_logdrv(adapter, logdrv);
4148
4149 spin_lock_irqsave(&adapter->lock, flags);
4150
4151 /*
4152 * If delete operation was successful, add 0x80 to the logical drive
4153 * ids for commands in the pending queue.
4154 */
4155 if (adapter->read_ldidmap) {
4156 struct list_head *pos;
4157 list_for_each(pos, &adapter->pending_list) {
4158 scb = list_entry(pos, scb_t, list);
4159 if (scb->pthru->logdrv < 0x80 )
4160 scb->pthru->logdrv += 0x80;
4161 }
4162 }
4163
4164 atomic_set(&adapter->quiescent, 0);
4165
4166 mega_runpendq(adapter);
4167
4168 spin_unlock_irqrestore(&adapter->lock, flags);
4169
4170 return rval;
4171}
4172
4173
4174static int
4175mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4176{
4177 megacmd_t mc;
4178 int rval;
4179
4180 memset( &mc, 0, sizeof(megacmd_t));
4181
4182 mc.cmd = FC_DEL_LOGDRV;
4183 mc.opcode = OP_DEL_LOGDRV;
4184 mc.subopcode = logdrv;
4185
cb0258a2 4186 rval = mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 4187
4188 /* log this event */
4189 if(rval) {
4190 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4191 return rval;
4192 }
4193
4194 /*
4195 * After deleting first logical drive, the logical drives must be
4196 * addressed by adding 0x80 to the logical drive id.
4197 */
4198 adapter->read_ldidmap = 1;
4199
4200 return rval;
4201}
4202
4203
4204/**
4205 * mega_get_max_sgl()
4206 * @adapter - pointer to our soft state
4207 *
4208 * Find out the maximum number of scatter-gather elements supported by this
4209 * version of the firmware
4210 */
4211static void
4212mega_get_max_sgl(adapter_t *adapter)
4213{
4214 unsigned char raw_mbox[sizeof(struct mbox_out)];
4215 mbox_t *mbox;
4216
4217 mbox = (mbox_t *)raw_mbox;
4218
4219 memset(mbox, 0, sizeof(raw_mbox));
4220
4221 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4222
4223 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4224
4225 raw_mbox[0] = MAIN_MISC_OPCODE;
4226 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4227
4228
4229 if( issue_scb_block(adapter, raw_mbox) ) {
4230 /*
4231 * f/w does not support this command. Choose the default value
4232 */
4233 adapter->sglen = MIN_SGLIST;
4234 }
4235 else {
4236 adapter->sglen = *((char *)adapter->mega_buffer);
4237
4238 /*
4239 * Make sure this is not more than the resources we are
4240 * planning to allocate
4241 */
4242 if ( adapter->sglen > MAX_SGLIST )
4243 adapter->sglen = MAX_SGLIST;
4244 }
4245
4246 return;
4247}
4248
4249
4250/**
4251 * mega_support_cluster()
4252 * @adapter - pointer to our soft state
4253 *
4254 * Find out if this firmware support cluster calls.
4255 */
4256static int
4257mega_support_cluster(adapter_t *adapter)
4258{
4259 unsigned char raw_mbox[sizeof(struct mbox_out)];
4260 mbox_t *mbox;
4261
4262 mbox = (mbox_t *)raw_mbox;
4263
4264 memset(mbox, 0, sizeof(raw_mbox));
4265
4266 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4267
4268 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4269
4270 /*
4271 * Try to get the initiator id. This command will succeed iff the
4272 * clustering is available on this HBA.
4273 */
4274 raw_mbox[0] = MEGA_GET_TARGET_ID;
4275
4276 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4277
4278 /*
4279 * Cluster support available. Get the initiator target id.
4280 * Tell our id to mid-layer too.
4281 */
4282 adapter->this_id = *(u32 *)adapter->mega_buffer;
4283 adapter->host->this_id = adapter->this_id;
4284
4285 return 1;
4286 }
4287
4288 return 0;
4289}
4290
84a3c97b 4291#ifdef CONFIG_PROC_FS
1da177e4
LT		 4292/**
4293 * mega_adapinq()
4294 * @adapter - pointer to our soft state
4295 * @dma_handle - DMA address of the buffer
4296 *
4297 * Issue internal comamnds while interrupts are available.
4298 * We only issue direct mailbox commands from within the driver. ioctl()
4299 * interface using these routines can issue passthru commands.
4300 */
4301static int
4302mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4303{
4304 megacmd_t mc;
4305
4306 memset(&mc, 0, sizeof(megacmd_t));
4307
4308 if( adapter->flag & BOARD_40LD ) {
4309 mc.cmd = FC_NEW_CONFIG;
4310 mc.opcode = NC_SUBOP_ENQUIRY3;
4311 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4312 }
4313 else {
4314 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4315 }
4316
4317 mc.xferaddr = (u32)dma_handle;
4318
cb0258a2 4319 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 4320 return -1;
4321 }
4322
4323 return 0;
4324}
4325
4326
4327/** mega_internal_dev_inquiry()
4328 * @adapter - pointer to our soft state
4329 * @ch - channel for this device
4330 * @tgt - ID of this device
4331 * @buf_dma_handle - DMA address of the buffer
4332 *
4333 * Issue the scsi inquiry for the specified device.
4334 */
4335static int
4336mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4337 dma_addr_t buf_dma_handle)
4338{
4339 mega_passthru *pthru;
4340 dma_addr_t pthru_dma_handle;
4341 megacmd_t mc;
4342 int rval;
4343 struct pci_dev *pdev;
4344
4345
4346 /*
4347 * For all internal commands, the buffer must be allocated in <4GB
4348 * address range
4349 */
4350 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4351
4352 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4353 &pthru_dma_handle);
4354
4355 if( pthru == NULL ) {
4356 free_local_pdev(pdev);
4357 return -1;
4358 }
4359
4360 pthru->timeout = 2;
4361 pthru->ars = 1;
4362 pthru->reqsenselen = 14;
4363 pthru->islogical = 0;
4364
4365 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4366
4367 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4368
4369 pthru->cdblen = 6;
4370
4371 pthru->cdb[0] = INQUIRY;
4372 pthru->cdb[1] = 0;
4373 pthru->cdb[2] = 0;
4374 pthru->cdb[3] = 0;
4375 pthru->cdb[4] = 255;
4376 pthru->cdb[5] = 0;
4377
4378
4379 pthru->dataxferaddr = (u32)buf_dma_handle;
4380 pthru->dataxferlen = 256;
4381
4382 memset(&mc, 0, sizeof(megacmd_t));
4383
4384 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4385 mc.xferaddr = (u32)pthru_dma_handle;
4386
cb0258a2 4387 rval = mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 4388
4389 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4390 pthru_dma_handle);
4391
4392 free_local_pdev(pdev);
4393
4394 return rval;
4395}
84a3c97b 4396#endif
1da177e4
LT		 4397
4398/**
4399 * mega_internal_command()
4400 * @adapter - pointer to our soft state
1da177e4
LT		 4401 * @mc - the mailbox command
4402 * @pthru - Passthru structure for DCDB commands
4403 *
4404 * Issue the internal commands in interrupt mode.
4405 * The last argument is the address of the passthru structure if the command
4406 * to be fired is a passthru command
4407 *
4408 * lockscope specifies whether the caller has already acquired the lock. Of
4409 * course, the caller must know which lock we are talking about.
4410 *
4411 * Note: parameter 'pthru' is null for non-passthru commands.
4412 */
4413static int
cb0258a2 4414mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
1da177e4
LT		 4415{
4416 Scsi_Cmnd *scmd;
4417 struct scsi_device *sdev;
1da177e4
LT		 4418 scb_t *scb;
4419 int rval;
4420
6b0eea21
FT		 4421 scmd = scsi_allocate_command(GFP_KERNEL);
4422 if (!scmd)
4423 return -ENOMEM;
4424
1da177e4
LT		 4425 /*
4426 * The internal commands share one command id and hence are
4427 * serialized. This is so because we want to reserve maximum number of
4428 * available command ids for the I/O commands.
4429 */
0b950672 4430 mutex_lock(&adapter->int_mtx);
1da177e4
LT		 4431
4432 scb = &adapter->int_scb;
4433 memset(scb, 0, sizeof(scb_t));
4434
bbfbbbc1 4435 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
1da177e4
LT		 4436 scmd->device = sdev;
4437
6b0eea21
FT		 4438 memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
4439 scmd->cmnd = adapter->int_cdb;
1da177e4 4440 scmd->device->host = adapter->host;
3f6270ef 4441 scmd->host_scribble = (void *)scb;
1da177e4
LT		 4442 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4443
4444 scb->state |= SCB_ACTIVE;
4445 scb->cmd = scmd;
4446
4447 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4448
4449 /*
4450 * Is it a passthru command
4451 */
4452 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4453
4454 scb->pthru = pthru;
4455 }
4456
4457 scb->idx = CMDID_INT_CMDS;
4458
1da177e4
LT		 4459 megaraid_queue(scmd, mega_internal_done);
4460
8d115f84 4461 wait_for_completion(&adapter->int_waitq);
1da177e4
LT		 4462
4463 rval = scmd->result;
4464 mc->status = scmd->result;
4465 kfree(sdev);
4466
4467 /*
4468 * Print a debug message for all failed commands. Applications can use
4469 * this information.
4470 */
4471 if( scmd->result && trace_level ) {
4472 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4473 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4474 }
4475
0b950672 4476 mutex_unlock(&adapter->int_mtx);
1da177e4 4477
6b0eea21
FT		 4478 scsi_free_command(GFP_KERNEL, scmd);
4479
1da177e4
LT		 4480 return rval;
4481}
4482
4483
4484/**
4485 * mega_internal_done()
4486 * @scmd - internal scsi command
4487 *
4488 * Callback routine for internal commands.
4489 */
4490static void
4491mega_internal_done(Scsi_Cmnd *scmd)
4492{
4493 adapter_t *adapter;
4494
4495 adapter = (adapter_t *)scmd->device->host->hostdata;
4496
8d115f84 4497 complete(&adapter->int_waitq);
1da177e4
LT		 4498
4499}
4500
4501
4502static struct scsi_host_template megaraid_template = {
4503 .module = THIS_MODULE,
4504 .name = "MegaRAID",
3492b328 4505 .proc_name = "megaraid_legacy",
1da177e4
LT		 4506 .info = megaraid_info,
4507 .queuecommand = megaraid_queue,
4508 .bios_param = megaraid_biosparam,
4509 .max_sectors = MAX_SECTORS_PER_IO,
4510 .can_queue = MAX_COMMANDS,
4511 .this_id = DEFAULT_INITIATOR_ID,
4512 .sg_tablesize = MAX_SGLIST,
4513 .cmd_per_lun = DEF_CMD_PER_LUN,
4514 .use_clustering = ENABLE_CLUSTERING,
4515 .eh_abort_handler = megaraid_abort,
4516 .eh_device_reset_handler = megaraid_reset,
4517 .eh_bus_reset_handler = megaraid_reset,
4518 .eh_host_reset_handler = megaraid_reset,
4519};
4520
4521static int __devinit
4522megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4523{
4524 struct Scsi_Host *host;
4525 adapter_t *adapter;
4526 unsigned long mega_baseport, tbase, flag = 0;
4527 u16 subsysid, subsysvid;
4528 u8 pci_bus, pci_dev_func;
4529 int irq, i, j;
4530 int error = -ENODEV;
4531
4532 if (pci_enable_device(pdev))
4533 goto out;
4534 pci_set_master(pdev);
4535
4536 pci_bus = pdev->bus->number;
4537 pci_dev_func = pdev->devfn;
4538
4539 /*
4540 * The megaraid3 stuff reports the ID of the Intel part which is not
4541 * remotely specific to the megaraid
4542 */
4543 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4544 u16 magic;
4545 /*
4546 * Don't fall over the Compaq management cards using the same
4547 * PCI identifier
4548 */
4549 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4550 pdev->subsystem_device == 0xC000)
4551 return -ENODEV;
4552 /* Now check the magic signature byte */
4553 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4554 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4555 return -ENODEV;
4556 /* Ok it is probably a megaraid */
4557 }
4558
4559 /*
4560 * For these vendor and device ids, signature offsets are not
4561 * valid and 64 bit is implicit
4562 */
4563 if (id->driver_data & BOARD_64BIT)
4564 flag |= BOARD_64BIT;
4565 else {
4566 u32 magic64;
4567
4568 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4569 if (magic64 == HBA_SIGNATURE_64BIT)
4570 flag |= BOARD_64BIT;
4571 }
4572
4573 subsysvid = pdev->subsystem_vendor;
4574 subsysid = pdev->subsystem_device;
4575
4576 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4577 id->vendor, id->device, pci_bus);
4578
4579 printk("slot %d:func %d\n",
4580 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4581
4582 /* Read the base port and IRQ from PCI */
4583 mega_baseport = pci_resource_start(pdev, 0);
4584 irq = pdev->irq;
4585
4586 tbase = mega_baseport;
4587 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4588 flag |= BOARD_MEMMAP;
4589
4590 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4591 printk(KERN_WARNING "megaraid: mem region busy!\n");
4592 goto out_disable_device;
4593 }
4594
4595 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4596 if (!mega_baseport) {
4597 printk(KERN_WARNING
4598 "megaraid: could not map hba memory\n");
4599 goto out_release_region;
4600 }
4601 } else {
4602 flag |= BOARD_IOMAP;
4603 mega_baseport += 0x10;
4604
4605 if (!request_region(mega_baseport, 16, "megaraid"))
4606 goto out_disable_device;
4607 }
4608
4609 /* Initialize SCSI Host structure */
4610 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4611 if (!host)
4612 goto out_iounmap;
4613
4614 adapter = (adapter_t *)host->hostdata;
4615 memset(adapter, 0, sizeof(adapter_t));
4616
4617 printk(KERN_NOTICE
4618 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4619 host->host_no, mega_baseport, irq);
4620
4621 adapter->base = mega_baseport;
00769ec4
JG		 4622 if (flag & BOARD_MEMMAP)
4623 adapter->mmio_base = (void __iomem *) mega_baseport;
1da177e4
LT		 4624
4625 INIT_LIST_HEAD(&adapter->free_list);
4626 INIT_LIST_HEAD(&adapter->pending_list);
4627 INIT_LIST_HEAD(&adapter->completed_list);
4628
4629 adapter->flag = flag;
4630 spin_lock_init(&adapter->lock);
1da177e4
LT		 4631
4632 host->cmd_per_lun = max_cmd_per_lun;
4633 host->max_sectors = max_sectors_per_io;
4634
4635 adapter->dev = pdev;
4636 adapter->host = host;
4637
4638 adapter->host->irq = irq;
4639
4640 if (flag & BOARD_MEMMAP)
4641 adapter->host->base = tbase;
4642 else {
4643 adapter->host->io_port = tbase;
4644 adapter->host->n_io_port = 16;
4645 }
4646
4647 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4648
4649 /*
4650 * Allocate buffer to issue internal commands.
4651 */
4652 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4653 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4654 if (!adapter->mega_buffer) {
4655 printk(KERN_WARNING "megaraid: out of RAM.\n");
4656 goto out_host_put;
4657 }
4658
4659 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4660 if (!adapter->scb_list) {
4661 printk(KERN_WARNING "megaraid: out of RAM.\n");
4662 goto out_free_cmd_buffer;
4663 }
4664
4665 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4666 megaraid_isr_memmapped : megaraid_isr_iomapped,
1d6f359a 4667 IRQF_SHARED, "megaraid", adapter)) {
1da177e4
LT		 4668 printk(KERN_WARNING
4669 "megaraid: Couldn't register IRQ %d!\n", irq);
4670 goto out_free_scb_list;
4671 }
4672
4673 if (mega_setup_mailbox(adapter))
4674 goto out_free_irq;
4675
4676 if (mega_query_adapter(adapter))
4677 goto out_free_mbox;
4678
4679 /*
4680 * Have checks for some buggy f/w
4681 */
4682 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4683 /*
4684 * Which firmware
4685 */
4686 if (!strcmp(adapter->fw_version, "3.00") ||
4687 !strcmp(adapter->fw_version, "3.01")) {
4688
4689 printk( KERN_WARNING
4690 "megaraid: Your card is a Dell PERC "
4691 "2/SC RAID controller with "
4692 "firmware\nmegaraid: 3.00 or 3.01. "
4693 "This driver is known to have "
4694 "corruption issues\nmegaraid: with "
4695 "those firmware versions on this "
4696 "specific card. In order\nmegaraid: "
4697 "to protect your data, please upgrade "
4698 "your firmware to version\nmegaraid: "
4699 "3.10 or later, available from the "
4700 "Dell Technical Support web\n"
4701 "megaraid: site at\nhttp://support."
4702 "dell.com/us/en/filelib/download/"
4703 "index.asp?fileid=2940\n"
4704 );
4705 }
4706 }
4707
4708 /*
4709 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4710 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4711 * support, since this firmware cannot handle 64 bit
4712 * addressing
4713 */
4714 if ((subsysvid == HP_SUBSYS_VID) &&
4715 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4716 /*
4717 * which firmware
4718 */
4719 if (!strcmp(adapter->fw_version, "H01.07") ||
4720 !strcmp(adapter->fw_version, "H01.08") ||
4721 !strcmp(adapter->fw_version, "H01.09") ) {
4722 printk(KERN_WARNING
4723 "megaraid: Firmware H.01.07, "
4724 "H.01.08, and H.01.09 on 1M/2M "
4725 "controllers\n"
4726 "megaraid: do not support 64 bit "
4727 "addressing.\nmegaraid: DISABLING "
4728 "64 bit support.\n");
4729 adapter->flag &= ~BOARD_64BIT;
4730 }
4731 }
4732
4733 if (mega_is_bios_enabled(adapter))
4734 mega_hbas[hba_count].is_bios_enabled = 1;
4735 mega_hbas[hba_count].hostdata_addr = adapter;
4736
4737 /*
4738 * Find out which channel is raid and which is scsi. This is
4739 * for ROMB support.
4740 */
4741 mega_enum_raid_scsi(adapter);
4742
4743 /*
4744 * Find out if a logical drive is set as the boot drive. If
4745 * there is one, will make that as the first logical drive.
4746 * ROMB: Do we have to boot from a physical drive. Then all
4747 * the physical drives would appear before the logical disks.
4748 * Else, all the physical drives would be exported to the mid
4749 * layer after logical drives.
4750 */
4751 mega_get_boot_drv(adapter);
4752
4753 if (adapter->boot_pdrv_enabled) {
4754 j = adapter->product_info.nchannels;
4755 for( i = 0; i < j; i++ )
4756 adapter->logdrv_chan[i] = 0;
4757 for( i = j; i < NVIRT_CHAN + j; i++ )
4758 adapter->logdrv_chan[i] = 1;
4759 } else {
4760 for (i = 0; i < NVIRT_CHAN; i++)
4761 adapter->logdrv_chan[i] = 1;
4762 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4763 adapter->logdrv_chan[i] = 0;
4764 adapter->mega_ch_class <<= NVIRT_CHAN;
4765 }
4766
4767 /*
4768 * Do we support random deletion and addition of logical
4769 * drives
4770 */
4771 adapter->read_ldidmap = 0; /* set it after first logdrv
4772 delete cmd */
4773 adapter->support_random_del = mega_support_random_del(adapter);
4774
4775 /* Initialize SCBs */
4776 if (mega_init_scb(adapter))
4777 goto out_free_mbox;
4778
4779 /*
4780 * Reset the pending commands counter
4781 */
4782 atomic_set(&adapter->pend_cmds, 0);
4783
4784 /*
4785 * Reset the adapter quiescent flag
4786 */
4787 atomic_set(&adapter->quiescent, 0);
4788
4789 hba_soft_state[hba_count] = adapter;
4790
4791 /*
4792 * Fill in the structure which needs to be passed back to the
4793 * application when it does an ioctl() for controller related
4794 * information.
4795 */
4796 i = hba_count;
4797
4798 mcontroller[i].base = mega_baseport;
4799 mcontroller[i].irq = irq;
4800 mcontroller[i].numldrv = adapter->numldrv;
4801 mcontroller[i].pcibus = pci_bus;
4802 mcontroller[i].pcidev = id->device;
4803 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4804 mcontroller[i].pciid = -1;
4805 mcontroller[i].pcivendor = id->vendor;
4806 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4807 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4808
4809
4810 /* Set the Mode of addressing to 64 bit if we can */
4811 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
6a35528a 4812 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1da177e4
LT		 4813 adapter->has_64bit_addr = 1;
4814 } else {
284901a9 4815 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1da177e4
LT		 4816 adapter->has_64bit_addr = 0;
4817 }
4818
0b950672 4819 mutex_init(&adapter->int_mtx);
8d115f84 4820 init_completion(&adapter->int_waitq);
1da177e4
LT		 4821
4822 adapter->this_id = DEFAULT_INITIATOR_ID;
4823 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4824
4825#if MEGA_HAVE_CLUSTERING
4826 /*
4827 * Is cluster support enabled on this controller
4828 * Note: In a cluster the HBAs ( the initiators ) will have
4829 * different target IDs and we cannot assume it to be 7. Call
4830 * to mega_support_cluster() will get the target ids also if
4831 * the cluster support is available
4832 */
4833 adapter->has_cluster = mega_support_cluster(adapter);
4834 if (adapter->has_cluster) {
4835 printk(KERN_NOTICE
4836 "megaraid: Cluster driver, initiator id:%d\n",
4837 adapter->this_id);
4838 }
4839#endif
4840
4841 pci_set_drvdata(pdev, host);
4842
4843 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4844
4845 error = scsi_add_host(host, &pdev->dev);
4846 if (error)
4847 goto out_free_mbox;
4848
4849 scsi_scan_host(host);
4850 hba_count++;
4851 return 0;
4852
4853 out_free_mbox:
4854 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4855 adapter->una_mbox64, adapter->una_mbox64_dma);
4856 out_free_irq:
4857 free_irq(adapter->host->irq, adapter);
4858 out_free_scb_list:
4859 kfree(adapter->scb_list);
4860 out_free_cmd_buffer:
4861 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4862 adapter->mega_buffer, adapter->buf_dma_handle);
4863 out_host_put:
4864 scsi_host_put(host);
4865 out_iounmap:
4866 if (flag & BOARD_MEMMAP)
4867 iounmap((void *)mega_baseport);
4868 out_release_region:
4869 if (flag & BOARD_MEMMAP)
4870 release_mem_region(tbase, 128);
4871 else
4872 release_region(mega_baseport, 16);
4873 out_disable_device:
4874 pci_disable_device(pdev);
4875 out:
4876 return error;
4877}
4878
4879static void
4880__megaraid_shutdown(adapter_t *adapter)
4881{
4882 u_char raw_mbox[sizeof(struct mbox_out)];
4883 mbox_t *mbox = (mbox_t *)raw_mbox;
4884 int i;
4885
4886 /* Flush adapter cache */
4887 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4888 raw_mbox[0] = FLUSH_ADAPTER;
4889
4890 free_irq(adapter->host->irq, adapter);
4891
4892 /* Issue a blocking (interrupts disabled) command to the card */
4893 issue_scb_block(adapter, raw_mbox);
4894
4895 /* Flush disks cache */
4896 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4897 raw_mbox[0] = FLUSH_SYSTEM;
4898
4899 /* Issue a blocking (interrupts disabled) command to the card */
4900 issue_scb_block(adapter, raw_mbox);
4901
4902 if (atomic_read(&adapter->pend_cmds) > 0)
4903 printk(KERN_WARNING "megaraid: pending commands!!\n");
4904
4905 /*
4906 * Have a delibrate delay to make sure all the caches are
4907 * actually flushed.
4908 */
4909 for (i = 0; i <= 10; i++)
4910 mdelay(1000);
4911}
4912
bfd90dce 4913static void __devexit
1da177e4
LT		 4914megaraid_remove_one(struct pci_dev *pdev)
4915{
4916 struct Scsi_Host *host = pci_get_drvdata(pdev);
4917 adapter_t *adapter = (adapter_t *)host->hostdata;
1da177e4
LT		 4918
4919 scsi_remove_host(host);
4920
4921 __megaraid_shutdown(adapter);
4922
4923 /* Free our resources */
4924 if (adapter->flag & BOARD_MEMMAP) {
4925 iounmap((void *)adapter->base);
4926 release_mem_region(adapter->host->base, 128);
4927 } else
4928 release_region(adapter->base, 16);
4929
4930 mega_free_sgl(adapter);
4931
4932#ifdef CONFIG_PROC_FS
4933 if (adapter->controller_proc_dir_entry) {
4934 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4935 remove_proc_entry("config",
4936 adapter->controller_proc_dir_entry);
4937 remove_proc_entry("mailbox",
4938 adapter->controller_proc_dir_entry);
4939#if MEGA_HAVE_ENH_PROC
4940 remove_proc_entry("rebuild-rate",
4941 adapter->controller_proc_dir_entry);
4942 remove_proc_entry("battery-status",
4943 adapter->controller_proc_dir_entry);
4944
4945 remove_proc_entry("diskdrives-ch0",
4946 adapter->controller_proc_dir_entry);
4947 remove_proc_entry("diskdrives-ch1",
4948 adapter->controller_proc_dir_entry);
4949 remove_proc_entry("diskdrives-ch2",
4950 adapter->controller_proc_dir_entry);
4951 remove_proc_entry("diskdrives-ch3",
4952 adapter->controller_proc_dir_entry);
4953
4954 remove_proc_entry("raiddrives-0-9",
4955 adapter->controller_proc_dir_entry);
4956 remove_proc_entry("raiddrives-10-19",
4957 adapter->controller_proc_dir_entry);
4958 remove_proc_entry("raiddrives-20-29",
4959 adapter->controller_proc_dir_entry);
4960 remove_proc_entry("raiddrives-30-39",
4961 adapter->controller_proc_dir_entry);
4962#endif
84a3c97b 4963 {
4964 char buf[12] = { 0 };
4965 sprintf(buf, "hba%d", adapter->host->host_no);
4966 remove_proc_entry(buf, mega_proc_dir_entry);
4967 }
1da177e4
LT		 4968 }
4969#endif
4970
4971 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4972 adapter->mega_buffer, adapter->buf_dma_handle);
4973 kfree(adapter->scb_list);
4974 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4975 adapter->una_mbox64, adapter->una_mbox64_dma);
4976
4977 scsi_host_put(host);
4978 pci_disable_device(pdev);
4979
4980 hba_count--;
4981}
4982
4983static void
d18c3db5 4984megaraid_shutdown(struct pci_dev *pdev)
1da177e4 4985{
d18c3db5 4986 struct Scsi_Host *host = pci_get_drvdata(pdev);
1da177e4
LT		 4987 adapter_t *adapter = (adapter_t *)host->hostdata;
4988
4989 __megaraid_shutdown(adapter);
4990}
4991
4992static struct pci_device_id megaraid_pci_tbl[] = {
1da177e4
LT		 4993 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4994 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4995 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4996 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 4997 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4998 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 4999 {0,}
5000};
5001MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5002
5003static struct pci_driver megaraid_pci_driver = {
3542adcb 5004 .name = "megaraid_legacy",
1da177e4
LT		 5005 .id_table = megaraid_pci_tbl,
5006 .probe = megaraid_probe_one,
5007 .remove = __devexit_p(megaraid_remove_one),
d18c3db5 5008 .shutdown = megaraid_shutdown,
1da177e4
LT		 5009};
5010
5011static int __init megaraid_init(void)
5012{
5013 int error;
5014
5015 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5016 max_cmd_per_lun = MAX_CMD_PER_LUN;
5017 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5018 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5019
5020#ifdef CONFIG_PROC_FS
c74c120a 5021 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
1da177e4
LT		 5022 if (!mega_proc_dir_entry) {
5023 printk(KERN_WARNING
5024 "megaraid: failed to create megaraid root\n");
5025 }
5026#endif
4520b008 5027 error = pci_register_driver(&megaraid_pci_driver);
1da177e4
LT		 5028 if (error) {
5029#ifdef CONFIG_PROC_FS
c74c120a 5030 remove_proc_entry("megaraid", NULL);
1da177e4
LT		 5031#endif
5032 return error;
5033 }
5034
5035 /*
5036 * Register the driver as a character device, for applications
5037 * to access it for ioctls.
5038 * First argument (major) to register_chrdev implies a dynamic
5039 * major number allocation.
5040 */
3492b328 5041 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
1da177e4
LT		 5042 if (!major) {
5043 printk(KERN_WARNING
5044 "megaraid: failed to register char device\n");
5045 }
5046
5047 return 0;
5048}
5049
5050static void __exit megaraid_exit(void)
5051{
5052 /*
5053 * Unregister the character device interface to the driver.
5054 */
3492b328 5055 unregister_chrdev(major, "megadev_legacy");
1da177e4
LT		 5056
5057 pci_unregister_driver(&megaraid_pci_driver);
5058
5059#ifdef CONFIG_PROC_FS
c74c120a 5060 remove_proc_entry("megaraid", NULL);
1da177e4
LT		 5061#endif
5062}
5063
5064module_init(megaraid_init);
5065module_exit(megaraid_exit);
5066
5067/* vi: set ts=8 sw=8 tw=78: */
Clone of davem's net-next-2.6 tree