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[ARM SMP] Add support for shared memory attribute
[linux-2.6/sactl.git] / drivers / scsi / megaraid.c
blob61a6fd810bb4bedfb24a13b57265e7af87a56966
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright © 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com>
21 *
22 * Description: Linux device driver for LSI Logic MegaRAID controller
23 *
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
25 * 518, 520, 531, 532
26 *
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the mailing list
29 * linux-scsi@vger.kernel.org .
30 *
31 */
32
33 #include <linux/mm.h>
34 #include <linux/fs.h>
35 #include <linux/blkdev.h>
36 #include <asm/uaccess.h>
37 #include <asm/io.h>
38 #include <linux/completion.h>
39 #include <linux/delay.h>
40 #include <linux/proc_fs.h>
41 #include <linux/reboot.h>
42 #include <linux/module.h>
43 #include <linux/list.h>
44 #include <linux/interrupt.h>
45 #include <linux/pci.h>
46 #include <linux/init.h>
47 #include <scsi/scsicam.h>
48
49 #include "scsi.h"
50 #include <scsi/scsi_host.h>
51
52 #include "megaraid.h"
53
54 #define MEGARAID_MODULE_VERSION "2.00.3"
55
56 MODULE_AUTHOR ("LSI Logic Corporation");
57 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
58 MODULE_LICENSE ("GPL");
59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
60
61 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
62 module_param(max_cmd_per_lun, uint, 0);
63 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
64
65 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
66 module_param(max_sectors_per_io, ushort, 0);
67 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
68
69
70 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
71 module_param(max_mbox_busy_wait, ushort, 0);
72 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
73
74 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
75 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
76 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
77 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
78
79 /*
80 * Global variables
81 */
82
83 static int hba_count;
84 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
85 static struct proc_dir_entry *mega_proc_dir_entry;
86
87 /* For controller re-ordering */
88 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
89
90 /*
91 * The File Operations structure for the serial/ioctl interface of the driver
92 */
93 static struct file_operations megadev_fops = {
94 .owner = THIS_MODULE,
95 .ioctl = megadev_ioctl,
96 .open = megadev_open,
97 };
98
99 /*
100 * Array to structures for storing the information about the controllers. This
101 * information is sent to the user level applications, when they do an ioctl
102 * for this information.
103 */
104 static struct mcontroller mcontroller[MAX_CONTROLLERS];
105
106 /* The current driver version */
107 static u32 driver_ver = 0x02000000;
108
109 /* major number used by the device for character interface */
110 static int major;
111
112 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
113
114
115 /*
116 * Debug variable to print some diagnostic messages
117 */
118 static int trace_level;
119
120 /**
121 * mega_setup_mailbox()
122 * @adapter - pointer to our soft state
123 *
124 * Allocates a 8 byte aligned memory for the handshake mailbox.
125 */
126 static int
127 mega_setup_mailbox(adapter_t *adapter)
128 {
129 unsigned long align;
130
131 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
132 sizeof(mbox64_t), &adapter->una_mbox64_dma);
133
134 if( !adapter->una_mbox64 ) return -1;
135
136 adapter->mbox = &adapter->una_mbox64->mbox;
137
138 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
139 (~0UL ^ 0xFUL));
140
141 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
142
143 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
144
145 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
146
147 /*
148 * Register the mailbox if the controller is an io-mapped controller
149 */
150 if( adapter->flag & BOARD_IOMAP ) {
151
152 outb_p(adapter->mbox_dma & 0xFF,
153 adapter->host->io_port + MBOX_PORT0);
154
155 outb_p((adapter->mbox_dma >> 8) & 0xFF,
156 adapter->host->io_port + MBOX_PORT1);
157
158 outb_p((adapter->mbox_dma >> 16) & 0xFF,
159 adapter->host->io_port + MBOX_PORT2);
160
161 outb_p((adapter->mbox_dma >> 24) & 0xFF,
162 adapter->host->io_port + MBOX_PORT3);
163
164 outb_p(ENABLE_MBOX_BYTE,
165 adapter->host->io_port + ENABLE_MBOX_REGION);
166
167 irq_ack(adapter);
168
169 irq_enable(adapter);
170 }
171
172 return 0;
173 }
174
175
176 /*
177 * mega_query_adapter()
178 * @adapter - pointer to our soft state
179 *
180 * Issue the adapter inquiry commands to the controller and find out
181 * information and parameter about the devices attached
182 */
183 static int
184 mega_query_adapter(adapter_t *adapter)
185 {
186 dma_addr_t prod_info_dma_handle;
187 mega_inquiry3 *inquiry3;
188 u8 raw_mbox[sizeof(struct mbox_out)];
189 mbox_t *mbox;
190 int retval;
191
192 /* Initialize adapter inquiry mailbox */
193
194 mbox = (mbox_t *)raw_mbox;
195
196 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
197 memset(&mbox->m_out, 0, sizeof(raw_mbox));
198
199 /*
200 * Try to issue Inquiry3 command
201 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
202 * update enquiry3 structure
203 */
204 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
205
206 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
207
208 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
209 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
210 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
211
212 /* Issue a blocking command to the card */
213 if ((retval = issue_scb_block(adapter, raw_mbox))) {
214 /* the adapter does not support 40ld */
215
216 mraid_ext_inquiry *ext_inq;
217 mraid_inquiry *inq;
218 dma_addr_t dma_handle;
219
220 ext_inq = pci_alloc_consistent(adapter->dev,
221 sizeof(mraid_ext_inquiry), &dma_handle);
222
223 if( ext_inq == NULL ) return -1;
224
225 inq = &ext_inq->raid_inq;
226
227 mbox->m_out.xferaddr = (u32)dma_handle;
228
229 /*issue old 0x04 command to adapter */
230 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
231
232 issue_scb_block(adapter, raw_mbox);
233
234 /*
235 * update Enquiry3 and ProductInfo structures with
236 * mraid_inquiry structure
237 */
238 mega_8_to_40ld(inq, inquiry3,
239 (mega_product_info *)&adapter->product_info);
240
241 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
242 ext_inq, dma_handle);
243
244 } else { /*adapter supports 40ld */
245 adapter->flag |= BOARD_40LD;
246
247 /*
248 * get product_info, which is static information and will be
249 * unchanged
250 */
251 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
252 &adapter->product_info,
253 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
254
255 mbox->m_out.xferaddr = prod_info_dma_handle;
256
257 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
258 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
259
260 if ((retval = issue_scb_block(adapter, raw_mbox)))
261 printk(KERN_WARNING
262 "megaraid: Product_info cmd failed with error: %d\n",
263 retval);
264
265 pci_unmap_single(adapter->dev, prod_info_dma_handle,
266 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
267 }
268
269
270 /*
271 * kernel scans the channels from 0 to <= max_channel
272 */
273 adapter->host->max_channel =
274 adapter->product_info.nchannels + NVIRT_CHAN -1;
275
276 adapter->host->max_id = 16; /* max targets per channel */
277
278 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
279
280 adapter->host->cmd_per_lun = max_cmd_per_lun;
281
282 adapter->numldrv = inquiry3->num_ldrv;
283
284 adapter->max_cmds = adapter->product_info.max_commands;
285
286 if(adapter->max_cmds > MAX_COMMANDS)
287 adapter->max_cmds = MAX_COMMANDS;
288
289 adapter->host->can_queue = adapter->max_cmds - 1;
290
291 /*
292 * Get the maximum number of scatter-gather elements supported by this
293 * firmware
294 */
295 mega_get_max_sgl(adapter);
296
297 adapter->host->sg_tablesize = adapter->sglen;
298
299
300 /* use HP firmware and bios version encoding */
301 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
302 sprintf (adapter->fw_version, "%c%d%d.%d%d",
303 adapter->product_info.fw_version[2],
304 adapter->product_info.fw_version[1] >> 8,
305 adapter->product_info.fw_version[1] & 0x0f,
306 adapter->product_info.fw_version[0] >> 8,
307 adapter->product_info.fw_version[0] & 0x0f);
308 sprintf (adapter->bios_version, "%c%d%d.%d%d",
309 adapter->product_info.bios_version[2],
310 adapter->product_info.bios_version[1] >> 8,
311 adapter->product_info.bios_version[1] & 0x0f,
312 adapter->product_info.bios_version[0] >> 8,
313 adapter->product_info.bios_version[0] & 0x0f);
314 } else {
315 memcpy(adapter->fw_version,
316 (char *)adapter->product_info.fw_version, 4);
317 adapter->fw_version[4] = 0;
318
319 memcpy(adapter->bios_version,
320 (char *)adapter->product_info.bios_version, 4);
321
322 adapter->bios_version[4] = 0;
323 }
324
325 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
326 adapter->fw_version, adapter->bios_version, adapter->numldrv);
327
328 /*
329 * Do we support extended (>10 bytes) cdbs
330 */
331 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
332 if (adapter->support_ext_cdb)
333 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
334
335
336 return 0;
337 }
338
339 /**
340 * mega_runpendq()
341 * @adapter - pointer to our soft state
342 *
343 * Runs through the list of pending requests.
344 */
345 static inline void
346 mega_runpendq(adapter_t *adapter)
347 {
348 if(!list_empty(&adapter->pending_list))
349 __mega_runpendq(adapter);
350 }
351
352 /*
353 * megaraid_queue()
354 * @scmd - Issue this scsi command
355 * @done - the callback hook into the scsi mid-layer
356 *
357 * The command queuing entry point for the mid-layer.
358 */
359 static int
360 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
361 {
362 adapter_t *adapter;
363 scb_t *scb;
364 int busy=0;
365
366 adapter = (adapter_t *)scmd->device->host->hostdata;
367
368 scmd->scsi_done = done;
369
370
371 /*
372 * Allocate and build a SCB request
373 * busy flag will be set if mega_build_cmd() command could not
374 * allocate scb. We will return non-zero status in that case.
375 * NOTE: scb can be null even though certain commands completed
376 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
377 * return 0 in that case.
378 */
379
380 scb = mega_build_cmd(adapter, scmd, &busy);
381
382 if(scb) {
383 scb->state |= SCB_PENDQ;
384 list_add_tail(&scb->list, &adapter->pending_list);
385
386 /*
387 * Check if the HBA is in quiescent state, e.g., during a
388 * delete logical drive opertion. If it is, don't run
389 * the pending_list.
390 */
391 if(atomic_read(&adapter->quiescent) == 0) {
392 mega_runpendq(adapter);
393 }
394 return 0;
395 }
396
397 return busy;
398 }
399
400 /**
401 * mega_allocate_scb()
402 * @adapter - pointer to our soft state
403 * @cmd - scsi command from the mid-layer
404 *
405 * Allocate a SCB structure. This is the central structure for controller
406 * commands.
407 */
408 static inline scb_t *
409 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
410 {
411 struct list_head *head = &adapter->free_list;
412 scb_t *scb;
413
414 /* Unlink command from Free List */
415 if( !list_empty(head) ) {
416
417 scb = list_entry(head->next, scb_t, list);
418
419 list_del_init(head->next);
420
421 scb->state = SCB_ACTIVE;
422 scb->cmd = cmd;
423 scb->dma_type = MEGA_DMA_TYPE_NONE;
424
425 return scb;
426 }
427
428 return NULL;
429 }
430
431 /**
432 * mega_get_ldrv_num()
433 * @adapter - pointer to our soft state
434 * @cmd - scsi mid layer command
435 * @channel - channel on the controller
436 *
437 * Calculate the logical drive number based on the information in scsi command
438 * and the channel number.
439 */
440 static inline int
441 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
442 {
443 int tgt;
444 int ldrv_num;
445
446 tgt = cmd->device->id;
447
448 if ( tgt > adapter->this_id )
449 tgt--; /* we do not get inquires for initiator id */
450
451 ldrv_num = (channel * 15) + tgt;
452
453
454 /*
455 * If we have a logical drive with boot enabled, project it first
456 */
457 if( adapter->boot_ldrv_enabled ) {
458 if( ldrv_num == 0 ) {
459 ldrv_num = adapter->boot_ldrv;
460 }
461 else {
462 if( ldrv_num <= adapter->boot_ldrv ) {
463 ldrv_num--;
464 }
465 }
466 }
467
468 /*
469 * If "delete logical drive" feature is enabled on this controller.
470 * Do only if at least one delete logical drive operation was done.
471 *
472 * Also, after logical drive deletion, instead of logical drive number,
473 * the value returned should be 0x80+logical drive id.
474 *
475 * These is valid only for IO commands.
476 */
477
478 if (adapter->support_random_del && adapter->read_ldidmap )
479 switch (cmd->cmnd[0]) {
480 case READ_6: /* fall through */
481 case WRITE_6: /* fall through */
482 case READ_10: /* fall through */
483 case WRITE_10:
484 ldrv_num += 0x80;
485 }
486
487 return ldrv_num;
488 }
489
490 /**
491 * mega_build_cmd()
492 * @adapter - pointer to our soft state
493 * @cmd - Prepare using this scsi command
494 * @busy - busy flag if no resources
495 *
496 * Prepares a command and scatter gather list for the controller. This routine
497 * also finds out if the commands is intended for a logical drive or a
498 * physical device and prepares the controller command accordingly.
499 *
500 * We also re-order the logical drives and physical devices based on their
501 * boot settings.
502 */
503 static scb_t *
504 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
505 {
506 mega_ext_passthru *epthru;
507 mega_passthru *pthru;
508 scb_t *scb;
509 mbox_t *mbox;
510 long seg;
511 char islogical;
512 int max_ldrv_num;
513 int channel = 0;
514 int target = 0;
515 int ldrv_num = 0; /* logical drive number */
516
517
518 /*
519 * filter the internal and ioctl commands
520 */
521 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
522 return cmd->buffer;
523 }
524
525
526 /*
527 * We know what channels our logical drives are on - mega_find_card()
528 */
529 islogical = adapter->logdrv_chan[cmd->device->channel];
530
531 /*
532 * The theory: If physical drive is chosen for boot, all the physical
533 * devices are exported before the logical drives, otherwise physical
534 * devices are pushed after logical drives, in which case - Kernel sees
535 * the physical devices on virtual channel which is obviously converted
536 * to actual channel on the HBA.
537 */
538 if( adapter->boot_pdrv_enabled ) {
539 if( islogical ) {
540 /* logical channel */
541 channel = cmd->device->channel -
542 adapter->product_info.nchannels;
543 }
544 else {
545 /* this is physical channel */
546 channel = cmd->device->channel;
547 target = cmd->device->id;
548
549 /*
550 * boot from a physical disk, that disk needs to be
551 * exposed first IF both the channels are SCSI, then
552 * booting from the second channel is not allowed.
553 */
554 if( target == 0 ) {
555 target = adapter->boot_pdrv_tgt;
556 }
557 else if( target == adapter->boot_pdrv_tgt ) {
558 target = 0;
559 }
560 }
561 }
562 else {
563 if( islogical ) {
564 /* this is the logical channel */
565 channel = cmd->device->channel;
566 }
567 else {
568 /* physical channel */
569 channel = cmd->device->channel - NVIRT_CHAN;
570 target = cmd->device->id;
571 }
572 }
573
574
575 if(islogical) {
576
577 /* have just LUN 0 for each target on virtual channels */
578 if (cmd->device->lun) {
579 cmd->result = (DID_BAD_TARGET << 16);
580 cmd->scsi_done(cmd);
581 return NULL;
582 }
583
584 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
585
586
587 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
588 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
589
590 /*
591 * max_ldrv_num increases by 0x80 if some logical drive was
592 * deleted.
593 */
594 if(adapter->read_ldidmap)
595 max_ldrv_num += 0x80;
596
597 if(ldrv_num > max_ldrv_num ) {
598 cmd->result = (DID_BAD_TARGET << 16);
599 cmd->scsi_done(cmd);
600 return NULL;
601 }
602
603 }
604 else {
605 if( cmd->device->lun > 7) {
606 /*
607 * Do not support lun >7 for physically accessed
608 * devices
609 */
610 cmd->result = (DID_BAD_TARGET << 16);
611 cmd->scsi_done(cmd);
612 return NULL;
613 }
614 }
615
616 /*
617 *
618 * Logical drive commands
619 *
620 */
621 if(islogical) {
622 switch (cmd->cmnd[0]) {
623 case TEST_UNIT_READY:
624 #if MEGA_HAVE_CLUSTERING
625 /*
626 * Do we support clustering and is the support enabled
627 * If no, return success always
628 */
629 if( !adapter->has_cluster ) {
630 cmd->result = (DID_OK << 16);
631 cmd->scsi_done(cmd);
632 return NULL;
633 }
634
635 if(!(scb = mega_allocate_scb(adapter, cmd))) {
636 *busy = 1;
637 return NULL;
638 }
639
640 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
641 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
642 scb->raw_mbox[3] = ldrv_num;
643
644 scb->dma_direction = PCI_DMA_NONE;
645
646 return scb;
647 #else
648 cmd->result = (DID_OK << 16);
649 cmd->scsi_done(cmd);
650 return NULL;
651 #endif
652
653 case MODE_SENSE: {
654 char *buf;
655
656 if (cmd->use_sg) {
657 struct scatterlist *sg;
658
659 sg = (struct scatterlist *)cmd->request_buffer;
660 buf = kmap_atomic(sg->page, KM_IRQ0) +
661 sg->offset;
662 } else
663 buf = cmd->request_buffer;
664 memset(cmd->request_buffer, 0, cmd->cmnd[4]);
665 if (cmd->use_sg) {
666 struct scatterlist *sg;
667
668 sg = (struct scatterlist *)cmd->request_buffer;
669 kunmap_atomic(buf - sg->offset, KM_IRQ0);
670 }
671 cmd->result = (DID_OK << 16);
672 cmd->scsi_done(cmd);
673 return NULL;
674 }
675
676 case READ_CAPACITY:
677 case INQUIRY:
678
679 if(!(adapter->flag & (1L << cmd->device->channel))) {
680
681 printk(KERN_NOTICE
682 "scsi%d: scanning scsi channel %d ",
683 adapter->host->host_no,
684 cmd->device->channel);
685 printk("for logical drives.\n");
686
687 adapter->flag |= (1L << cmd->device->channel);
688 }
689
690 /* Allocate a SCB and initialize passthru */
691 if(!(scb = mega_allocate_scb(adapter, cmd))) {
692 *busy = 1;
693 return NULL;
694 }
695 pthru = scb->pthru;
696
697 mbox = (mbox_t *)scb->raw_mbox;
698 memset(mbox, 0, sizeof(scb->raw_mbox));
699 memset(pthru, 0, sizeof(mega_passthru));
700
701 pthru->timeout = 0;
702 pthru->ars = 1;
703 pthru->reqsenselen = 14;
704 pthru->islogical = 1;
705 pthru->logdrv = ldrv_num;
706 pthru->cdblen = cmd->cmd_len;
707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
708
709 if( adapter->has_64bit_addr ) {
710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
711 }
712 else {
713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
714 }
715
716 scb->dma_direction = PCI_DMA_FROMDEVICE;
717
718 pthru->numsgelements = mega_build_sglist(adapter, scb,
719 &pthru->dataxferaddr, &pthru->dataxferlen);
720
721 mbox->m_out.xferaddr = scb->pthru_dma_addr;
722
723 return scb;
724
725 case READ_6:
726 case WRITE_6:
727 case READ_10:
728 case WRITE_10:
729 case READ_12:
730 case WRITE_12:
731
732 /* Allocate a SCB and initialize mailbox */
733 if(!(scb = mega_allocate_scb(adapter, cmd))) {
734 *busy = 1;
735 return NULL;
736 }
737 mbox = (mbox_t *)scb->raw_mbox;
738
739 memset(mbox, 0, sizeof(scb->raw_mbox));
740 mbox->m_out.logdrv = ldrv_num;
741
742 /*
743 * A little hack: 2nd bit is zero for all scsi read
744 * commands and is set for all scsi write commands
745 */
746 if( adapter->has_64bit_addr ) {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE64:
749 MEGA_MBOXCMD_LREAD64 ;
750 }
751 else {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE:
754 MEGA_MBOXCMD_LREAD ;
755 }
756
757 /*
758 * 6-byte READ(0x08) or WRITE(0x0A) cdb
759 */
760 if( cmd->cmd_len == 6 ) {
761 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
762 mbox->m_out.lba =
763 ((u32)cmd->cmnd[1] << 16) |
764 ((u32)cmd->cmnd[2] << 8) |
765 (u32)cmd->cmnd[3];
766
767 mbox->m_out.lba &= 0x1FFFFF;
768
769 #if MEGA_HAVE_STATS
770 /*
771 * Take modulo 0x80, since the logical drive
772 * number increases by 0x80 when a logical
773 * drive was deleted
774 */
775 if (*cmd->cmnd == READ_6) {
776 adapter->nreads[ldrv_num%0x80]++;
777 adapter->nreadblocks[ldrv_num%0x80] +=
778 mbox->m_out.numsectors;
779 } else {
780 adapter->nwrites[ldrv_num%0x80]++;
781 adapter->nwriteblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 }
784 #endif
785 }
786
787 /*
788 * 10-byte READ(0x28) or WRITE(0x2A) cdb
789 */
790 if( cmd->cmd_len == 10 ) {
791 mbox->m_out.numsectors =
792 (u32)cmd->cmnd[8] |
793 ((u32)cmd->cmnd[7] << 8);
794 mbox->m_out.lba =
795 ((u32)cmd->cmnd[2] << 24) |
796 ((u32)cmd->cmnd[3] << 16) |
797 ((u32)cmd->cmnd[4] << 8) |
798 (u32)cmd->cmnd[5];
799
800 #if MEGA_HAVE_STATS
801 if (*cmd->cmnd == READ_10) {
802 adapter->nreads[ldrv_num%0x80]++;
803 adapter->nreadblocks[ldrv_num%0x80] +=
804 mbox->m_out.numsectors;
805 } else {
806 adapter->nwrites[ldrv_num%0x80]++;
807 adapter->nwriteblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 }
810 #endif
811 }
812
813 /*
814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
815 */
816 if( cmd->cmd_len == 12 ) {
817 mbox->m_out.lba =
818 ((u32)cmd->cmnd[2] << 24) |
819 ((u32)cmd->cmnd[3] << 16) |
820 ((u32)cmd->cmnd[4] << 8) |
821 (u32)cmd->cmnd[5];
822
823 mbox->m_out.numsectors =
824 ((u32)cmd->cmnd[6] << 24) |
825 ((u32)cmd->cmnd[7] << 16) |
826 ((u32)cmd->cmnd[8] << 8) |
827 (u32)cmd->cmnd[9];
828
829 #if MEGA_HAVE_STATS
830 if (*cmd->cmnd == READ_12) {
831 adapter->nreads[ldrv_num%0x80]++;
832 adapter->nreadblocks[ldrv_num%0x80] +=
833 mbox->m_out.numsectors;
834 } else {
835 adapter->nwrites[ldrv_num%0x80]++;
836 adapter->nwriteblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 }
839 #endif
840 }
841
842 /*
843 * If it is a read command
844 */
845 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
846 scb->dma_direction = PCI_DMA_FROMDEVICE;
847 }
848 else {
849 scb->dma_direction = PCI_DMA_TODEVICE;
850 }
851
852 /* Calculate Scatter-Gather info */
853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
854 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
855
856 return scb;
857
858 #if MEGA_HAVE_CLUSTERING
859 case RESERVE: /* Fall through */
860 case RELEASE:
861
862 /*
863 * Do we support clustering and is the support enabled
864 */
865 if( ! adapter->has_cluster ) {
866
867 cmd->result = (DID_BAD_TARGET << 16);
868 cmd->scsi_done(cmd);
869 return NULL;
870 }
871
872 /* Allocate a SCB and initialize mailbox */
873 if(!(scb = mega_allocate_scb(adapter, cmd))) {
874 *busy = 1;
875 return NULL;
876 }
877
878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
880 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
881
882 scb->raw_mbox[3] = ldrv_num;
883
884 scb->dma_direction = PCI_DMA_NONE;
885
886 return scb;
887 #endif
888
889 default:
890 cmd->result = (DID_BAD_TARGET << 16);
891 cmd->scsi_done(cmd);
892 return NULL;
893 }
894 }
895
896 /*
897 * Passthru drive commands
898 */
899 else {
900 /* Allocate a SCB and initialize passthru */
901 if(!(scb = mega_allocate_scb(adapter, cmd))) {
902 *busy = 1;
903 return NULL;
904 }
905
906 mbox = (mbox_t *)scb->raw_mbox;
907 memset(mbox, 0, sizeof(scb->raw_mbox));
908
909 if( adapter->support_ext_cdb ) {
910
911 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
912 channel, target);
913
914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
915
916 mbox->m_out.xferaddr = scb->epthru_dma_addr;
917
918 }
919 else {
920
921 pthru = mega_prepare_passthru(adapter, scb, cmd,
922 channel, target);
923
924 /* Initialize mailbox */
925 if( adapter->has_64bit_addr ) {
926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
927 }
928 else {
929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
930 }
931
932 mbox->m_out.xferaddr = scb->pthru_dma_addr;
933
934 }
935 return scb;
936 }
937 return NULL;
938 }
939
940
941 /**
942 * mega_prepare_passthru()
943 * @adapter - pointer to our soft state
944 * @scb - our scsi control block
945 * @cmd - scsi command from the mid-layer
946 * @channel - actual channel on the controller
947 * @target - actual id on the controller.
948 *
949 * prepare a command for the scsi physical devices.
950 */
951 static mega_passthru *
952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
953 int channel, int target)
954 {
955 mega_passthru *pthru;
956
957 pthru = scb->pthru;
958 memset(pthru, 0, sizeof (mega_passthru));
959
960 /* 0=6sec/1=60sec/2=10min/3=3hrs */
961 pthru->timeout = 2;
962
963 pthru->ars = 1;
964 pthru->reqsenselen = 14;
965 pthru->islogical = 0;
966
967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
968
969 pthru->target = (adapter->flag & BOARD_40LD) ?
970 (channel << 4) | target : target;
971
972 pthru->cdblen = cmd->cmd_len;
973 pthru->logdrv = cmd->device->lun;
974
975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
976
977 /* Not sure about the direction */
978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
979
980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
981 switch (cmd->cmnd[0]) {
982 case INQUIRY:
983 case READ_CAPACITY:
984 if(!(adapter->flag & (1L << cmd->device->channel))) {
985
986 printk(KERN_NOTICE
987 "scsi%d: scanning scsi channel %d [P%d] ",
988 adapter->host->host_no,
989 cmd->device->channel, channel);
990 printk("for physical devices.\n");
991
992 adapter->flag |= (1L << cmd->device->channel);
993 }
994 /* Fall through */
995 default:
996 pthru->numsgelements = mega_build_sglist(adapter, scb,
997 &pthru->dataxferaddr, &pthru->dataxferlen);
998 break;
999 }
1000 return pthru;
1001 }
1002
1003
1004 /**
1005 * mega_prepare_extpassthru()
1006 * @adapter - pointer to our soft state
1007 * @scb - our scsi control block
1008 * @cmd - scsi command from the mid-layer
1009 * @channel - actual channel on the controller
1010 * @target - actual id on the controller.
1011 *
1012 * prepare a command for the scsi physical devices. This rountine prepares
1013 * commands for devices which can take extended CDBs (>10 bytes)
1014 */
1015 static mega_ext_passthru *
1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1017 int channel, int target)
1018 {
1019 mega_ext_passthru *epthru;
1020
1021 epthru = scb->epthru;
1022 memset(epthru, 0, sizeof(mega_ext_passthru));
1023
1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1025 epthru->timeout = 2;
1026
1027 epthru->ars = 1;
1028 epthru->reqsenselen = 14;
1029 epthru->islogical = 0;
1030
1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1032 epthru->target = (adapter->flag & BOARD_40LD) ?
1033 (channel << 4) | target : target;
1034
1035 epthru->cdblen = cmd->cmd_len;
1036 epthru->logdrv = cmd->device->lun;
1037
1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1039
1040 /* Not sure about the direction */
1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1042
1043 switch(cmd->cmnd[0]) {
1044 case INQUIRY:
1045 case READ_CAPACITY:
1046 if(!(adapter->flag & (1L << cmd->device->channel))) {
1047
1048 printk(KERN_NOTICE
1049 "scsi%d: scanning scsi channel %d [P%d] ",
1050 adapter->host->host_no,
1051 cmd->device->channel, channel);
1052 printk("for physical devices.\n");
1053
1054 adapter->flag |= (1L << cmd->device->channel);
1055 }
1056 /* Fall through */
1057 default:
1058 epthru->numsgelements = mega_build_sglist(adapter, scb,
1059 &epthru->dataxferaddr, &epthru->dataxferlen);
1060 break;
1061 }
1062
1063 return epthru;
1064 }
1065
1066 static void
1067 __mega_runpendq(adapter_t *adapter)
1068 {
1069 scb_t *scb;
1070 struct list_head *pos, *next;
1071
1072 /* Issue any pending commands to the card */
1073 list_for_each_safe(pos, next, &adapter->pending_list) {
1074
1075 scb = list_entry(pos, scb_t, list);
1076
1077 if( !(scb->state & SCB_ISSUED) ) {
1078
1079 if( issue_scb(adapter, scb) != 0 )
1080 return;
1081 }
1082 }
1083
1084 return;
1085 }
1086
1087
1088 /**
1089 * issue_scb()
1090 * @adapter - pointer to our soft state
1091 * @scb - scsi control block
1092 *
1093 * Post a command to the card if the mailbox is available, otherwise return
1094 * busy. We also take the scb from the pending list if the mailbox is
1095 * available.
1096 */
1097 static int
1098 issue_scb(adapter_t *adapter, scb_t *scb)
1099 {
1100 volatile mbox64_t *mbox64 = adapter->mbox64;
1101 volatile mbox_t *mbox = adapter->mbox;
1102 unsigned int i = 0;
1103
1104 if(unlikely(mbox->m_in.busy)) {
1105 do {
1106 udelay(1);
1107 i++;
1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1109
1110 if(mbox->m_in.busy) return -1;
1111 }
1112
1113 /* Copy mailbox data into host structure */
1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1115 sizeof(struct mbox_out));
1116
1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1118 mbox->m_in.busy = 1; /* Set busy */
1119
1120
1121 /*
1122 * Increment the pending queue counter
1123 */
1124 atomic_inc(&adapter->pend_cmds);
1125
1126 switch (mbox->m_out.cmd) {
1127 case MEGA_MBOXCMD_LREAD64:
1128 case MEGA_MBOXCMD_LWRITE64:
1129 case MEGA_MBOXCMD_PASSTHRU64:
1130 case MEGA_MBOXCMD_EXTPTHRU:
1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1132 mbox64->xfer_segment_hi = 0;
1133 mbox->m_out.xferaddr = 0xFFFFFFFF;
1134 break;
1135 default:
1136 mbox64->xfer_segment_lo = 0;
1137 mbox64->xfer_segment_hi = 0;
1138 }
1139
1140 /*
1141 * post the command
1142 */
1143 scb->state |= SCB_ISSUED;
1144
1145 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1146 mbox->m_in.poll = 0;
1147 mbox->m_in.ack = 0;
1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1149 }
1150 else {
1151 irq_enable(adapter);
1152 issue_command(adapter);
1153 }
1154
1155 return 0;
1156 }
1157
1158 /*
1159 * Wait until the controller's mailbox is available
1160 */
1161 static inline int
1162 mega_busywait_mbox (adapter_t *adapter)
1163 {
1164 if (adapter->mbox->m_in.busy)
1165 return __mega_busywait_mbox(adapter);
1166 return 0;
1167 }
1168
1169 /**
1170 * issue_scb_block()
1171 * @adapter - pointer to our soft state
1172 * @raw_mbox - the mailbox
1173 *
1174 * Issue a scb in synchronous and non-interrupt mode
1175 */
1176 static int
1177 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1178 {
1179 volatile mbox64_t *mbox64 = adapter->mbox64;
1180 volatile mbox_t *mbox = adapter->mbox;
1181 u8 byte;
1182
1183 /* Wait until mailbox is free */
1184 if(mega_busywait_mbox (adapter))
1185 goto bug_blocked_mailbox;
1186
1187 /* Copy mailbox data into host structure */
1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1189 mbox->m_out.cmdid = 0xFE;
1190 mbox->m_in.busy = 1;
1191
1192 switch (raw_mbox[0]) {
1193 case MEGA_MBOXCMD_LREAD64:
1194 case MEGA_MBOXCMD_LWRITE64:
1195 case MEGA_MBOXCMD_PASSTHRU64:
1196 case MEGA_MBOXCMD_EXTPTHRU:
1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1198 mbox64->xfer_segment_hi = 0;
1199 mbox->m_out.xferaddr = 0xFFFFFFFF;
1200 break;
1201 default:
1202 mbox64->xfer_segment_lo = 0;
1203 mbox64->xfer_segment_hi = 0;
1204 }
1205
1206 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1207 mbox->m_in.poll = 0;
1208 mbox->m_in.ack = 0;
1209 mbox->m_in.numstatus = 0xFF;
1210 mbox->m_in.status = 0xFF;
1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1212
1213 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1214 cpu_relax();
1215
1216 mbox->m_in.numstatus = 0xFF;
1217
1218 while( (volatile u8)mbox->m_in.poll != 0x77 )
1219 cpu_relax();
1220
1221 mbox->m_in.poll = 0;
1222 mbox->m_in.ack = 0x77;
1223
1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1225
1226 while(RDINDOOR(adapter) & 0x2)
1227 cpu_relax();
1228 }
1229 else {
1230 irq_disable(adapter);
1231 issue_command(adapter);
1232
1233 while (!((byte = irq_state(adapter)) & INTR_VALID))
1234 cpu_relax();
1235
1236 set_irq_state(adapter, byte);
1237 irq_enable(adapter);
1238 irq_ack(adapter);
1239 }
1240
1241 return mbox->m_in.status;
1242
1243 bug_blocked_mailbox:
1244 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1245 udelay (1000);
1246 return -1;
1247 }
1248
1249
1250 /**
1251 * megaraid_isr_iomapped()
1252 * @irq - irq
1253 * @devp - pointer to our soft state
1254 * @regs - unused
1255 *
1256 * Interrupt service routine for io-mapped controllers.
1257 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1258 * and service the completed commands.
1259 */
1260 static irqreturn_t
1261 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1262 {
1263 adapter_t *adapter = devp;
1264 unsigned long flags;
1265 u8 status;
1266 u8 nstatus;
1267 u8 completed[MAX_FIRMWARE_STATUS];
1268 u8 byte;
1269 int handled = 0;
1270
1271
1272 /*
1273 * loop till F/W has more commands for us to complete.
1274 */
1275 spin_lock_irqsave(&adapter->lock, flags);
1276
1277 do {
1278 /* Check if a valid interrupt is pending */
1279 byte = irq_state(adapter);
1280 if( (byte & VALID_INTR_BYTE) == 0 ) {
1281 /*
1282 * No more pending commands
1283 */
1284 goto out_unlock;
1285 }
1286 set_irq_state(adapter, byte);
1287
1288 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1289 == 0xFF)
1290 cpu_relax();
1291 adapter->mbox->m_in.numstatus = 0xFF;
1292
1293 status = adapter->mbox->m_in.status;
1294
1295 /*
1296 * decrement the pending queue counter
1297 */
1298 atomic_sub(nstatus, &adapter->pend_cmds);
1299
1300 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1301 nstatus);
1302
1303 /* Acknowledge interrupt */
1304 irq_ack(adapter);
1305
1306 mega_cmd_done(adapter, completed, nstatus, status);
1307
1308 mega_rundoneq(adapter);
1309
1310 handled = 1;
1311
1312 /* Loop through any pending requests */
1313 if(atomic_read(&adapter->quiescent) == 0) {
1314 mega_runpendq(adapter);
1315 }
1316
1317 } while(1);
1318
1319 out_unlock:
1320
1321 spin_unlock_irqrestore(&adapter->lock, flags);
1322
1323 return IRQ_RETVAL(handled);
1324 }
1325
1326
1327 /**
1328 * megaraid_isr_memmapped()
1329 * @irq - irq
1330 * @devp - pointer to our soft state
1331 * @regs - unused
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 */
1337 static irqreturn_t
1338 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
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
1386 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1387
1388 mega_cmd_done(adapter, completed, nstatus, status);
1389
1390 mega_rundoneq(adapter);
1391
1392 /* Loop through any pending requests */
1393 if(atomic_read(&adapter->quiescent) == 0) {
1394 mega_runpendq(adapter);
1395 }
1396
1397 } while(1);
1398
1399 out_unlock:
1400
1401 spin_unlock_irqrestore(&adapter->lock, flags);
1402
1403 return IRQ_RETVAL(handled);
1404 }
1405 /**
1406 * mega_cmd_done()
1407 * @adapter - pointer to our soft state
1408 * @completed - array of ids of completed commands
1409 * @nstatus - number of completed commands
1410 * @status - status of the last command completed
1411 *
1412 * Complete the comamnds and call the scsi mid-layer callback hooks.
1413 */
1414 static void
1415 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1416 {
1417 mega_ext_passthru *epthru = NULL;
1418 struct scatterlist *sgl;
1419 Scsi_Cmnd *cmd = NULL;
1420 mega_passthru *pthru = NULL;
1421 mbox_t *mbox = NULL;
1422 u8 c;
1423 scb_t *scb;
1424 int islogical;
1425 int cmdid;
1426 int i;
1427
1428 /*
1429 * for all the commands completed, call the mid-layer callback routine
1430 * and free the scb.
1431 */
1432 for( i = 0; i < nstatus; i++ ) {
1433
1434 cmdid = completed[i];
1435
1436 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1437 scb = &adapter->int_scb;
1438 cmd = scb->cmd;
1439 mbox = (mbox_t *)scb->raw_mbox;
1440
1441 /*
1442 * Internal command interface do not fire the extended
1443 * passthru or 64-bit passthru
1444 */
1445 pthru = scb->pthru;
1446
1447 }
1448 else {
1449 scb = &adapter->scb_list[cmdid];
1450
1451 /*
1452 * Make sure f/w has completed a valid command
1453 */
1454 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1455 printk(KERN_CRIT
1456 "megaraid: invalid command ");
1457 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1458 cmdid, scb->state, scb->cmd);
1459
1460 continue;
1461 }
1462
1463 /*
1464 * Was a abort issued for this command
1465 */
1466 if( scb->state & SCB_ABORT ) {
1467
1468 printk(KERN_WARNING
1469 "megaraid: aborted cmd %lx[%x] complete.\n",
1470 scb->cmd->serial_number, scb->idx);
1471
1472 scb->cmd->result = (DID_ABORT << 16);
1473
1474 list_add_tail(SCSI_LIST(scb->cmd),
1475 &adapter->completed_list);
1476
1477 mega_free_scb(adapter, scb);
1478
1479 continue;
1480 }
1481
1482 /*
1483 * Was a reset issued for this command
1484 */
1485 if( scb->state & SCB_RESET ) {
1486
1487 printk(KERN_WARNING
1488 "megaraid: reset cmd %lx[%x] complete.\n",
1489 scb->cmd->serial_number, scb->idx);
1490
1491 scb->cmd->result = (DID_RESET << 16);
1492
1493 list_add_tail(SCSI_LIST(scb->cmd),
1494 &adapter->completed_list);
1495
1496 mega_free_scb (adapter, scb);
1497
1498 continue;
1499 }
1500
1501 cmd = scb->cmd;
1502 pthru = scb->pthru;
1503 epthru = scb->epthru;
1504 mbox = (mbox_t *)scb->raw_mbox;
1505
1506 #if MEGA_HAVE_STATS
1507 {
1508
1509 int logdrv = mbox->m_out.logdrv;
1510
1511 islogical = adapter->logdrv_chan[cmd->channel];
1512 /*
1513 * Maintain an error counter for the logical drive.
1514 * Some application like SNMP agent need such
1515 * statistics
1516 */
1517 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1518 cmd->cmnd[0] == READ_10 ||
1519 cmd->cmnd[0] == READ_12)) {
1520 /*
1521 * Logical drive number increases by 0x80 when
1522 * a logical drive is deleted
1523 */
1524 adapter->rd_errors[logdrv%0x80]++;
1525 }
1526
1527 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1528 cmd->cmnd[0] == WRITE_10 ||
1529 cmd->cmnd[0] == WRITE_12)) {
1530 /*
1531 * Logical drive number increases by 0x80 when
1532 * a logical drive is deleted
1533 */
1534 adapter->wr_errors[logdrv%0x80]++;
1535 }
1536
1537 }
1538 #endif
1539 }
1540
1541 /*
1542 * Do not return the presence of hard disk on the channel so,
1543 * inquiry sent, and returned data==hard disk or removable
1544 * hard disk and not logical, request should return failure! -
1545 * PJ
1546 */
1547 islogical = adapter->logdrv_chan[cmd->device->channel];
1548 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1549
1550 if( cmd->use_sg ) {
1551 sgl = (struct scatterlist *)
1552 cmd->request_buffer;
1553
1554 if( sgl->page ) {
1555 c = *(unsigned char *)
1556 page_address((&sgl[0])->page) +
1557 (&sgl[0])->offset;
1558 }
1559 else {
1560 printk(KERN_WARNING
1561 "megaraid: invalid sg.\n");
1562 c = 0;
1563 }
1564 }
1565 else {
1566 c = *(u8 *)cmd->request_buffer;
1567 }
1568
1569 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1570 ((c & 0x1F ) == TYPE_DISK)) {
1571 status = 0xF0;
1572 }
1573 }
1574
1575 /* clear result; otherwise, success returns corrupt value */
1576 cmd->result = 0;
1577
1578 /* Convert MegaRAID status to Linux error code */
1579 switch (status) {
1580 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1581 cmd->result |= (DID_OK << 16);
1582 break;
1583
1584 case 0x02: /* ERROR_ABORTED, i.e.
1585 SCSI_STATUS_CHECK_CONDITION */
1586
1587 /* set sense_buffer and result fields */
1588 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1589 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1590
1591 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1592 14);
1593
1594 cmd->result = (DRIVER_SENSE << 24) |
1595 (DID_OK << 16) |
1596 (CHECK_CONDITION << 1);
1597 }
1598 else {
1599 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1600
1601 memcpy(cmd->sense_buffer,
1602 epthru->reqsensearea, 14);
1603
1604 cmd->result = (DRIVER_SENSE << 24) |
1605 (DID_OK << 16) |
1606 (CHECK_CONDITION << 1);
1607 } else {
1608 cmd->sense_buffer[0] = 0x70;
1609 cmd->sense_buffer[2] = ABORTED_COMMAND;
1610 cmd->result |= (CHECK_CONDITION << 1);
1611 }
1612 }
1613 break;
1614
1615 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1616 SCSI_STATUS_BUSY */
1617 cmd->result |= (DID_BUS_BUSY << 16) | status;
1618 break;
1619
1620 default:
1621 #if MEGA_HAVE_CLUSTERING
1622 /*
1623 * If TEST_UNIT_READY fails, we know
1624 * MEGA_RESERVATION_STATUS failed
1625 */
1626 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1627 cmd->result |= (DID_ERROR << 16) |
1628 (RESERVATION_CONFLICT << 1);
1629 }
1630 else
1631 /*
1632 * Error code returned is 1 if Reserve or Release
1633 * failed or the input parameter is invalid
1634 */
1635 if( status == 1 &&
1636 (cmd->cmnd[0] == RESERVE ||
1637 cmd->cmnd[0] == RELEASE) ) {
1638
1639 cmd->result |= (DID_ERROR << 16) |
1640 (RESERVATION_CONFLICT << 1);
1641 }
1642 else
1643 #endif
1644 cmd->result |= (DID_BAD_TARGET << 16)|status;
1645 }
1646
1647 /*
1648 * Only free SCBs for the commands coming down from the
1649 * mid-layer, not for which were issued internally
1650 *
1651 * For internal command, restore the status returned by the
1652 * firmware so that user can interpret it.
1653 */
1654 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1655 cmd->result = status;
1656
1657 /*
1658 * Remove the internal command from the pending list
1659 */
1660 list_del_init(&scb->list);
1661 scb->state = SCB_FREE;
1662 }
1663 else {
1664 mega_free_scb(adapter, scb);
1665 }
1666
1667 /* Add Scsi_Command to end of completed queue */
1668 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1669 }
1670 }
1671
1672
1673 /*
1674 * mega_runpendq()
1675 *
1676 * Run through the list of completed requests and finish it
1677 */
1678 static void
1679 mega_rundoneq (adapter_t *adapter)
1680 {
1681 Scsi_Cmnd *cmd;
1682 struct list_head *pos;
1683
1684 list_for_each(pos, &adapter->completed_list) {
1685
1686 Scsi_Pointer* spos = (Scsi_Pointer *)pos;
1687
1688 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1689 cmd->scsi_done(cmd);
1690 }
1691
1692 INIT_LIST_HEAD(&adapter->completed_list);
1693 }
1694
1695
1696 /*
1697 * Free a SCB structure
1698 * Note: We assume the scsi commands associated with this scb is not free yet.
1699 */
1700 static void
1701 mega_free_scb(adapter_t *adapter, scb_t *scb)
1702 {
1703 unsigned long length;
1704
1705 switch( scb->dma_type ) {
1706
1707 case MEGA_DMA_TYPE_NONE:
1708 break;
1709
1710 case MEGA_BULK_DATA:
1711 if (scb->cmd->use_sg == 0)
1712 length = scb->cmd->request_bufflen;
1713 else {
1714 struct scatterlist *sgl =
1715 (struct scatterlist *)scb->cmd->request_buffer;
1716 length = sgl->length;
1717 }
1718 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1719 length, scb->dma_direction);
1720 break;
1721
1722 case MEGA_SGLIST:
1723 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1724 scb->cmd->use_sg, scb->dma_direction);
1725 break;
1726
1727 default:
1728 break;
1729 }
1730
1731 /*
1732 * Remove from the pending list
1733 */
1734 list_del_init(&scb->list);
1735
1736 /* Link the scb back into free list */
1737 scb->state = SCB_FREE;
1738 scb->cmd = NULL;
1739
1740 list_add(&scb->list, &adapter->free_list);
1741 }
1742
1743
1744 static int
1745 __mega_busywait_mbox (adapter_t *adapter)
1746 {
1747 volatile mbox_t *mbox = adapter->mbox;
1748 long counter;
1749
1750 for (counter = 0; counter < 10000; counter++) {
1751 if (!mbox->m_in.busy)
1752 return 0;
1753 udelay(100); yield();
1754 }
1755 return -1; /* give up after 1 second */
1756 }
1757
1758 /*
1759 * Copies data to SGLIST
1760 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1761 */
1762 static int
1763 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1764 {
1765 struct scatterlist *sgl;
1766 struct page *page;
1767 unsigned long offset;
1768 unsigned int length;
1769 Scsi_Cmnd *cmd;
1770 int sgcnt;
1771 int idx;
1772
1773 cmd = scb->cmd;
1774
1775 /* Scatter-gather not used */
1776 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1777 !adapter->has_64bit_addr)) {
1778
1779 if (cmd->use_sg == 0) {
1780 page = virt_to_page(cmd->request_buffer);
1781 offset = offset_in_page(cmd->request_buffer);
1782 length = cmd->request_bufflen;
1783 } else {
1784 sgl = (struct scatterlist *)cmd->request_buffer;
1785 page = sgl->page;
1786 offset = sgl->offset;
1787 length = sgl->length;
1788 }
1789
1790 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1791 page, offset,
1792 length,
1793 scb->dma_direction);
1794 scb->dma_type = MEGA_BULK_DATA;
1795
1796 /*
1797 * We need to handle special 64-bit commands that need a
1798 * minimum of 1 SG
1799 */
1800 if( adapter->has_64bit_addr ) {
1801 scb->sgl64[0].address = scb->dma_h_bulkdata;
1802 scb->sgl64[0].length = length;
1803 *buf = (u32)scb->sgl_dma_addr;
1804 *len = (u32)length;
1805 return 1;
1806 }
1807 else {
1808 *buf = (u32)scb->dma_h_bulkdata;
1809 *len = (u32)length;
1810 }
1811 return 0;
1812 }
1813
1814 sgl = (struct scatterlist *)cmd->request_buffer;
1815
1816 /*
1817 * Copy Scatter-Gather list info into controller structure.
1818 *
1819 * The number of sg elements returned must not exceed our limit
1820 */
1821 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1822 scb->dma_direction);
1823
1824 scb->dma_type = MEGA_SGLIST;
1825
1826 if( sgcnt > adapter->sglen ) BUG();
1827
1828 *len = 0;
1829
1830 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1831
1832 if( adapter->has_64bit_addr ) {
1833 scb->sgl64[idx].address = sg_dma_address(sgl);
1834 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1835 }
1836 else {
1837 scb->sgl[idx].address = sg_dma_address(sgl);
1838 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1839 }
1840 }
1841
1842 /* Reset pointer and length fields */
1843 *buf = scb->sgl_dma_addr;
1844
1845 /* Return count of SG requests */
1846 return sgcnt;
1847 }
1848
1849
1850 /*
1851 * mega_8_to_40ld()
1852 *
1853 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1854 * Enquiry3 structures for later use
1855 */
1856 static void
1857 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1858 mega_product_info *product_info)
1859 {
1860 int i;
1861
1862 product_info->max_commands = inquiry->adapter_info.max_commands;
1863 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1864 product_info->nchannels = inquiry->adapter_info.nchannels;
1865
1866 for (i = 0; i < 4; i++) {
1867 product_info->fw_version[i] =
1868 inquiry->adapter_info.fw_version[i];
1869
1870 product_info->bios_version[i] =
1871 inquiry->adapter_info.bios_version[i];
1872 }
1873 enquiry3->cache_flush_interval =
1874 inquiry->adapter_info.cache_flush_interval;
1875
1876 product_info->dram_size = inquiry->adapter_info.dram_size;
1877
1878 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1879
1880 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1881 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1882 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1883 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1884 }
1885
1886 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1887 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1888 }
1889
1890 static inline void
1891 mega_free_sgl(adapter_t *adapter)
1892 {
1893 scb_t *scb;
1894 int i;
1895
1896 for(i = 0; i < adapter->max_cmds; i++) {
1897
1898 scb = &adapter->scb_list[i];
1899
1900 if( scb->sgl64 ) {
1901 pci_free_consistent(adapter->dev,
1902 sizeof(mega_sgl64) * adapter->sglen,
1903 scb->sgl64,
1904 scb->sgl_dma_addr);
1905
1906 scb->sgl64 = NULL;
1907 }
1908
1909 if( scb->pthru ) {
1910 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1911 scb->pthru, scb->pthru_dma_addr);
1912
1913 scb->pthru = NULL;
1914 }
1915
1916 if( scb->epthru ) {
1917 pci_free_consistent(adapter->dev,
1918 sizeof(mega_ext_passthru),
1919 scb->epthru, scb->epthru_dma_addr);
1920
1921 scb->epthru = NULL;
1922 }
1923
1924 }
1925 }
1926
1927
1928 /*
1929 * Get information about the card/driver
1930 */
1931 const char *
1932 megaraid_info(struct Scsi_Host *host)
1933 {
1934 static char buffer[512];
1935 adapter_t *adapter;
1936
1937 adapter = (adapter_t *)host->hostdata;
1938
1939 sprintf (buffer,
1940 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1941 adapter->fw_version, adapter->product_info.max_commands,
1942 adapter->host->max_id, adapter->host->max_channel,
1943 adapter->host->max_lun);
1944 return buffer;
1945 }
1946
1947 /*
1948 * Abort a previous SCSI request. Only commands on the pending list can be
1949 * aborted. All the commands issued to the F/W must complete.
1950 */
1951 static int
1952 megaraid_abort(Scsi_Cmnd *cmd)
1953 {
1954 adapter_t *adapter;
1955 int rval;
1956
1957 adapter = (adapter_t *)cmd->device->host->hostdata;
1958
1959 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1960
1961 /*
1962 * This is required here to complete any completed requests
1963 * to be communicated over to the mid layer.
1964 */
1965 mega_rundoneq(adapter);
1966
1967 return rval;
1968 }
1969
1970
1971 static int
1972 megaraid_reset(struct scsi_cmnd *cmd)
1973 {
1974 adapter_t *adapter;
1975 megacmd_t mc;
1976 int rval;
1977
1978 adapter = (adapter_t *)cmd->device->host->hostdata;
1979
1980 #if MEGA_HAVE_CLUSTERING
1981 mc.cmd = MEGA_CLUSTER_CMD;
1982 mc.opcode = MEGA_RESET_RESERVATIONS;
1983
1984 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
1985 printk(KERN_WARNING
1986 "megaraid: reservation reset failed.\n");
1987 }
1988 else {
1989 printk(KERN_INFO "megaraid: reservation reset.\n");
1990 }
1991 #endif
1992
1993 spin_lock_irq(&adapter->lock);
1994
1995 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1996
1997 /*
1998 * This is required here to complete any completed requests
1999 * to be communicated over to the mid layer.
2000 */
2001 mega_rundoneq(adapter);
2002 spin_unlock_irq(&adapter->lock);
2003
2004 return rval;
2005 }
2006
2007 /**
2008 * megaraid_abort_and_reset()
2009 * @adapter - megaraid soft state
2010 * @cmd - scsi command to be aborted or reset
2011 * @aor - abort or reset flag
2012 *
2013 * Try to locate the scsi command in the pending queue. If found and is not
2014 * issued to the controller, abort/reset it. Otherwise return failure
2015 */
2016 static int
2017 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2018 {
2019 struct list_head *pos, *next;
2020 scb_t *scb;
2021
2022 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2023 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2024 cmd->cmnd[0], cmd->device->channel,
2025 cmd->device->id, cmd->device->lun);
2026
2027 if(list_empty(&adapter->pending_list))
2028 return FALSE;
2029
2030 list_for_each_safe(pos, next, &adapter->pending_list) {
2031
2032 scb = list_entry(pos, scb_t, list);
2033
2034 if (scb->cmd == cmd) { /* Found command */
2035
2036 scb->state |= aor;
2037
2038 /*
2039 * Check if this command has firmare owenership. If
2040 * yes, we cannot reset this command. Whenever, f/w
2041 * completes this command, we will return appropriate
2042 * status from ISR.
2043 */
2044 if( scb->state & SCB_ISSUED ) {
2045
2046 printk(KERN_WARNING
2047 "megaraid: %s-%lx[%x], fw owner.\n",
2048 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2049 cmd->serial_number, scb->idx);
2050
2051 return FALSE;
2052 }
2053 else {
2054
2055 /*
2056 * Not yet issued! Remove from the pending
2057 * list
2058 */
2059 printk(KERN_WARNING
2060 "megaraid: %s-%lx[%x], driver owner.\n",
2061 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2062 cmd->serial_number, scb->idx);
2063
2064 mega_free_scb(adapter, scb);
2065
2066 if( aor == SCB_ABORT ) {
2067 cmd->result = (DID_ABORT << 16);
2068 }
2069 else {
2070 cmd->result = (DID_RESET << 16);
2071 }
2072
2073 list_add_tail(SCSI_LIST(cmd),
2074 &adapter->completed_list);
2075
2076 return TRUE;
2077 }
2078 }
2079 }
2080
2081 return FALSE;
2082 }
2083
2084 static inline int
2085 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2086 {
2087 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2088
2089 if( *pdev == NULL ) return -1;
2090
2091 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2092
2093 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
2094 kfree(*pdev);
2095 return -1;
2096 }
2097
2098 return 0;
2099 }
2100
2101 static inline void
2102 free_local_pdev(struct pci_dev *pdev)
2103 {
2104 kfree(pdev);
2105 }
2106
2107 /**
2108 * mega_allocate_inquiry()
2109 * @dma_handle - handle returned for dma address
2110 * @pdev - handle to pci device
2111 *
2112 * allocates memory for inquiry structure
2113 */
2114 static inline void *
2115 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2116 {
2117 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2118 }
2119
2120
2121 static inline void
2122 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2123 {
2124 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2125 }
2126
2127
2128 #ifdef CONFIG_PROC_FS
2129 /* Following code handles /proc fs */
2130
2131 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2132 S_IRUSR | S_IFREG, \
2133 controller_proc_dir_entry, \
2134 func, adapter)
2135
2136 /**
2137 * mega_create_proc_entry()
2138 * @index - index in soft state array
2139 * @parent - parent node for this /proc entry
2140 *
2141 * Creates /proc entries for our controllers.
2142 */
2143 static void
2144 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2145 {
2146 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2147 u8 string[64] = { 0 };
2148 adapter_t *adapter = hba_soft_state[index];
2149
2150 sprintf(string, "hba%d", adapter->host->host_no);
2151
2152 controller_proc_dir_entry =
2153 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2154
2155 if(!controller_proc_dir_entry) {
2156 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2157 return;
2158 }
2159 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2160 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2161 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2162 #if MEGA_HAVE_ENH_PROC
2163 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2164 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2165 proc_battery);
2166
2167 /*
2168 * Display each physical drive on its channel
2169 */
2170 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2171 proc_pdrv_ch0);
2172 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2173 proc_pdrv_ch1);
2174 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2175 proc_pdrv_ch2);
2176 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2177 proc_pdrv_ch3);
2178
2179 /*
2180 * Display a set of up to 10 logical drive through each of following
2181 * /proc entries
2182 */
2183 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2184 proc_rdrv_10);
2185 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2186 proc_rdrv_20);
2187 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2188 proc_rdrv_30);
2189 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2190 proc_rdrv_40);
2191 #endif
2192 }
2193
2194
2195 /**
2196 * proc_read_config()
2197 * @page - buffer to write the data in
2198 * @start - where the actual data has been written in page
2199 * @offset - same meaning as the read system call
2200 * @count - same meaning as the read system call
2201 * @eof - set if no more data needs to be returned
2202 * @data - pointer to our soft state
2203 *
2204 * Display configuration information about the controller.
2205 */
2206 static int
2207 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2208 void *data)
2209 {
2210
2211 adapter_t *adapter = (adapter_t *)data;
2212 int len = 0;
2213
2214 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2215
2216 if(adapter->product_info.product_name[0])
2217 len += sprintf(page+len, "%s\n",
2218 adapter->product_info.product_name);
2219
2220 len += sprintf(page+len, "Controller Type: ");
2221
2222 if( adapter->flag & BOARD_MEMMAP ) {
2223 len += sprintf(page+len,
2224 "438/466/467/471/493/518/520/531/532\n");
2225 }
2226 else {
2227 len += sprintf(page+len,
2228 "418/428/434\n");
2229 }
2230
2231 if(adapter->flag & BOARD_40LD) {
2232 len += sprintf(page+len,
2233 "Controller Supports 40 Logical Drives\n");
2234 }
2235
2236 if(adapter->flag & BOARD_64BIT) {
2237 len += sprintf(page+len,
2238 "Controller capable of 64-bit memory addressing\n");
2239 }
2240 if( adapter->has_64bit_addr ) {
2241 len += sprintf(page+len,
2242 "Controller using 64-bit memory addressing\n");
2243 }
2244 else {
2245 len += sprintf(page+len,
2246 "Controller is not using 64-bit memory addressing\n");
2247 }
2248
2249 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2250 adapter->host->irq);
2251
2252 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2253 adapter->numldrv, adapter->product_info.nchannels);
2254
2255 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2256 adapter->fw_version, adapter->bios_version,
2257 adapter->product_info.dram_size);
2258
2259 len += sprintf(page+len,
2260 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2261 adapter->product_info.max_commands, adapter->max_cmds);
2262
2263 len += sprintf(page+len, "support_ext_cdb = %d\n",
2264 adapter->support_ext_cdb);
2265 len += sprintf(page+len, "support_random_del = %d\n",
2266 adapter->support_random_del);
2267 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2268 adapter->boot_ldrv_enabled);
2269 len += sprintf(page+len, "boot_ldrv = %d\n",
2270 adapter->boot_ldrv);
2271 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2272 adapter->boot_pdrv_enabled);
2273 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2274 adapter->boot_pdrv_ch);
2275 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2276 adapter->boot_pdrv_tgt);
2277 len += sprintf(page+len, "quiescent = %d\n",
2278 atomic_read(&adapter->quiescent));
2279 len += sprintf(page+len, "has_cluster = %d\n",
2280 adapter->has_cluster);
2281
2282 len += sprintf(page+len, "\nModule Parameters:\n");
2283 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2284 max_cmd_per_lun);
2285 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2286 max_sectors_per_io);
2287
2288 *eof = 1;
2289
2290 return len;
2291 }
2292
2293
2294
2295 /**
2296 * proc_read_stat()
2297 * @page - buffer to write the data in
2298 * @start - where the actual data has been written in page
2299 * @offset - same meaning as the read system call
2300 * @count - same meaning as the read system call
2301 * @eof - set if no more data needs to be returned
2302 * @data - pointer to our soft state
2303 *
2304 * Diaplay statistical information about the I/O activity.
2305 */
2306 static int
2307 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2308 void *data)
2309 {
2310 adapter_t *adapter;
2311 int len;
2312 int i;
2313
2314 i = 0; /* avoid compilation warnings */
2315 len = 0;
2316 adapter = (adapter_t *)data;
2317
2318 len = sprintf(page, "Statistical Information for this controller\n");
2319 len += sprintf(page+len, "pend_cmds = %d\n",
2320 atomic_read(&adapter->pend_cmds));
2321 #if MEGA_HAVE_STATS
2322 for(i = 0; i < adapter->numldrv; i++) {
2323 len += sprintf(page+len, "Logical Drive %d:\n", i);
2324
2325 len += sprintf(page+len,
2326 "\tReads Issued = %lu, Writes Issued = %lu\n",
2327 adapter->nreads[i], adapter->nwrites[i]);
2328
2329 len += sprintf(page+len,
2330 "\tSectors Read = %lu, Sectors Written = %lu\n",
2331 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2332
2333 len += sprintf(page+len,
2334 "\tRead errors = %lu, Write errors = %lu\n\n",
2335 adapter->rd_errors[i], adapter->wr_errors[i]);
2336 }
2337 #else
2338 len += sprintf(page+len,
2339 "IO and error counters not compiled in driver.\n");
2340 #endif
2341
2342 *eof = 1;
2343
2344 return len;
2345 }
2346
2347
2348 /**
2349 * proc_read_mbox()
2350 * @page - buffer to write the data in
2351 * @start - where the actual data has been written in page
2352 * @offset - same meaning as the read system call
2353 * @count - same meaning as the read system call
2354 * @eof - set if no more data needs to be returned
2355 * @data - pointer to our soft state
2356 *
2357 * Display mailbox information for the last command issued. This information
2358 * is good for debugging.
2359 */
2360 static int
2361 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2362 void *data)
2363 {
2364
2365 adapter_t *adapter = (adapter_t *)data;
2366 volatile mbox_t *mbox = adapter->mbox;
2367 int len = 0;
2368
2369 len = sprintf(page, "Contents of Mail Box Structure\n");
2370 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2371 mbox->m_out.cmd);
2372 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2373 mbox->m_out.cmdid);
2374 len += sprintf(page+len, " No of Sectors= %04d\n",
2375 mbox->m_out.numsectors);
2376 len += sprintf(page+len, " LBA = 0x%02x\n",
2377 mbox->m_out.lba);
2378 len += sprintf(page+len, " DTA = 0x%08x\n",
2379 mbox->m_out.xferaddr);
2380 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2381 mbox->m_out.logdrv);
2382 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2383 mbox->m_out.numsgelements);
2384 len += sprintf(page+len, " Busy = %01x\n",
2385 mbox->m_in.busy);
2386 len += sprintf(page+len, " Status = 0x%02x\n",
2387 mbox->m_in.status);
2388
2389 *eof = 1;
2390
2391 return len;
2392 }
2393
2394
2395 /**
2396 * proc_rebuild_rate()
2397 * @page - buffer to write the data in
2398 * @start - where the actual data has been written in page
2399 * @offset - same meaning as the read system call
2400 * @count - same meaning as the read system call
2401 * @eof - set if no more data needs to be returned
2402 * @data - pointer to our soft state
2403 *
2404 * Display current rebuild rate
2405 */
2406 static int
2407 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2408 void *data)
2409 {
2410 adapter_t *adapter = (adapter_t *)data;
2411 dma_addr_t dma_handle;
2412 caddr_t inquiry;
2413 struct pci_dev *pdev;
2414 int len = 0;
2415
2416 if( make_local_pdev(adapter, &pdev) != 0 ) {
2417 *eof = 1;
2418 return len;
2419 }
2420
2421 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2422 free_local_pdev(pdev);
2423 *eof = 1;
2424 return len;
2425 }
2426
2427 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2428
2429 len = sprintf(page, "Adapter inquiry failed.\n");
2430
2431 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2432
2433 mega_free_inquiry(inquiry, dma_handle, pdev);
2434
2435 free_local_pdev(pdev);
2436
2437 *eof = 1;
2438
2439 return len;
2440 }
2441
2442 if( adapter->flag & BOARD_40LD ) {
2443 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2444 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2445 }
2446 else {
2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2448 ((mraid_ext_inquiry *)
2449 inquiry)->raid_inq.adapter_info.rebuild_rate);
2450 }
2451
2452
2453 mega_free_inquiry(inquiry, dma_handle, pdev);
2454
2455 free_local_pdev(pdev);
2456
2457 *eof = 1;
2458
2459 return len;
2460 }
2461
2462
2463 /**
2464 * proc_battery()
2465 * @page - buffer to write the data in
2466 * @start - where the actual data has been written in page
2467 * @offset - same meaning as the read system call
2468 * @count - same meaning as the read system call
2469 * @eof - set if no more data needs to be returned
2470 * @data - pointer to our soft state
2471 *
2472 * Display information about the battery module on the controller.
2473 */
2474 static int
2475 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2476 void *data)
2477 {
2478 adapter_t *adapter = (adapter_t *)data;
2479 dma_addr_t dma_handle;
2480 caddr_t inquiry;
2481 struct pci_dev *pdev;
2482 u8 battery_status = 0;
2483 char str[256];
2484 int len = 0;
2485
2486 if( make_local_pdev(adapter, &pdev) != 0 ) {
2487 *eof = 1;
2488 return len;
2489 }
2490
2491 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2492 free_local_pdev(pdev);
2493 *eof = 1;
2494 return len;
2495 }
2496
2497 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2498
2499 len = sprintf(page, "Adapter inquiry failed.\n");
2500
2501 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2502
2503 mega_free_inquiry(inquiry, dma_handle, pdev);
2504
2505 free_local_pdev(pdev);
2506
2507 *eof = 1;
2508
2509 return len;
2510 }
2511
2512 if( adapter->flag & BOARD_40LD ) {
2513 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2514 }
2515 else {
2516 battery_status = ((mraid_ext_inquiry *)inquiry)->
2517 raid_inq.adapter_info.battery_status;
2518 }
2519
2520 /*
2521 * Decode the battery status
2522 */
2523 sprintf(str, "Battery Status:[%d]", battery_status);
2524
2525 if(battery_status == MEGA_BATT_CHARGE_DONE)
2526 strcat(str, " Charge Done");
2527
2528 if(battery_status & MEGA_BATT_MODULE_MISSING)
2529 strcat(str, " Module Missing");
2530
2531 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2532 strcat(str, " Low Voltage");
2533
2534 if(battery_status & MEGA_BATT_TEMP_HIGH)
2535 strcat(str, " Temperature High");
2536
2537 if(battery_status & MEGA_BATT_PACK_MISSING)
2538 strcat(str, " Pack Missing");
2539
2540 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2541 strcat(str, " Charge In-progress");
2542
2543 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2544 strcat(str, " Charge Fail");
2545
2546 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2547 strcat(str, " Cycles Exceeded");
2548
2549 len = sprintf(page, "%s\n", str);
2550
2551
2552 mega_free_inquiry(inquiry, dma_handle, pdev);
2553
2554 free_local_pdev(pdev);
2555
2556 *eof = 1;
2557
2558 return len;
2559 }
2560
2561
2562 /**
2563 * proc_pdrv_ch0()
2564 * @page - buffer to write the data in
2565 * @start - where the actual data has been written in page
2566 * @offset - same meaning as the read system call
2567 * @count - same meaning as the read system call
2568 * @eof - set if no more data needs to be returned
2569 * @data - pointer to our soft state
2570 *
2571 * Display information about the physical drives on physical channel 0.
2572 */
2573 static int
2574 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2575 void *data)
2576 {
2577 adapter_t *adapter = (adapter_t *)data;
2578
2579 *eof = 1;
2580
2581 return (proc_pdrv(adapter, page, 0));
2582 }
2583
2584
2585 /**
2586 * proc_pdrv_ch1()
2587 * @page - buffer to write the data in
2588 * @start - where the actual data has been written in page
2589 * @offset - same meaning as the read system call
2590 * @count - same meaning as the read system call
2591 * @eof - set if no more data needs to be returned
2592 * @data - pointer to our soft state
2593 *
2594 * Display information about the physical drives on physical channel 1.
2595 */
2596 static int
2597 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2598 void *data)
2599 {
2600 adapter_t *adapter = (adapter_t *)data;
2601
2602 *eof = 1;
2603
2604 return (proc_pdrv(adapter, page, 1));
2605 }
2606
2607
2608 /**
2609 * proc_pdrv_ch2()
2610 * @page - buffer to write the data in
2611 * @start - where the actual data has been written in page
2612 * @offset - same meaning as the read system call
2613 * @count - same meaning as the read system call
2614 * @eof - set if no more data needs to be returned
2615 * @data - pointer to our soft state
2616 *
2617 * Display information about the physical drives on physical channel 2.
2618 */
2619 static int
2620 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2621 void *data)
2622 {
2623 adapter_t *adapter = (adapter_t *)data;
2624
2625 *eof = 1;
2626
2627 return (proc_pdrv(adapter, page, 2));
2628 }
2629
2630
2631 /**
2632 * proc_pdrv_ch3()
2633 * @page - buffer to write the data in
2634 * @start - where the actual data has been written in page
2635 * @offset - same meaning as the read system call
2636 * @count - same meaning as the read system call
2637 * @eof - set if no more data needs to be returned
2638 * @data - pointer to our soft state
2639 *
2640 * Display information about the physical drives on physical channel 3.
2641 */
2642 static int
2643 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2644 void *data)
2645 {
2646 adapter_t *adapter = (adapter_t *)data;
2647
2648 *eof = 1;
2649
2650 return (proc_pdrv(adapter, page, 3));
2651 }
2652
2653
2654 /**
2655 * proc_pdrv()
2656 * @page - buffer to write the data in
2657 * @adapter - pointer to our soft state
2658 *
2659 * Display information about the physical drives.
2660 */
2661 static int
2662 proc_pdrv(adapter_t *adapter, char *page, int channel)
2663 {
2664 dma_addr_t dma_handle;
2665 char *scsi_inq;
2666 dma_addr_t scsi_inq_dma_handle;
2667 caddr_t inquiry;
2668 struct pci_dev *pdev;
2669 u8 *pdrv_state;
2670 u8 state;
2671 int tgt;
2672 int max_channels;
2673 int len = 0;
2674 char str[80];
2675 int i;
2676
2677 if( make_local_pdev(adapter, &pdev) != 0 ) {
2678 return len;
2679 }
2680
2681 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2682 goto free_pdev;
2683 }
2684
2685 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2686 len = sprintf(page, "Adapter inquiry failed.\n");
2687
2688 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2689
2690 goto free_inquiry;
2691 }
2692
2693
2694 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2695
2696 if( scsi_inq == NULL ) {
2697 len = sprintf(page, "memory not available for scsi inq.\n");
2698
2699 goto free_inquiry;
2700 }
2701
2702 if( adapter->flag & BOARD_40LD ) {
2703 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2704 }
2705 else {
2706 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2707 raid_inq.pdrv_info.pdrv_state;
2708 }
2709
2710 max_channels = adapter->product_info.nchannels;
2711
2712 if( channel >= max_channels ) {
2713 goto free_pci;
2714 }
2715
2716 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2717
2718 i = channel*16 + tgt;
2719
2720 state = *(pdrv_state + i);
2721
2722 switch( state & 0x0F ) {
2723
2724 case PDRV_ONLINE:
2725 sprintf(str,
2726 "Channel:%2d Id:%2d State: Online",
2727 channel, tgt);
2728 break;
2729
2730 case PDRV_FAILED:
2731 sprintf(str,
2732 "Channel:%2d Id:%2d State: Failed",
2733 channel, tgt);
2734 break;
2735
2736 case PDRV_RBLD:
2737 sprintf(str,
2738 "Channel:%2d Id:%2d State: Rebuild",
2739 channel, tgt);
2740 break;
2741
2742 case PDRV_HOTSPARE:
2743 sprintf(str,
2744 "Channel:%2d Id:%2d State: Hot spare",
2745 channel, tgt);
2746 break;
2747
2748 default:
2749 sprintf(str,
2750 "Channel:%2d Id:%2d State: Un-configured",
2751 channel, tgt);
2752 break;
2753
2754 }
2755
2756 /*
2757 * This interface displays inquiries for disk drives
2758 * only. Inquries for logical drives and non-disk
2759 * devices are available through /proc/scsi/scsi
2760 */
2761 memset(scsi_inq, 0, 256);
2762 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2763 scsi_inq_dma_handle) ||
2764 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2765 continue;
2766 }
2767
2768 /*
2769 * Check for overflow. We print less than 240
2770 * characters for inquiry
2771 */
2772 if( (len + 240) >= PAGE_SIZE ) break;
2773
2774 len += sprintf(page+len, "%s.\n", str);
2775
2776 len += mega_print_inquiry(page+len, scsi_inq);
2777 }
2778
2779 free_pci:
2780 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2781 free_inquiry:
2782 mega_free_inquiry(inquiry, dma_handle, pdev);
2783 free_pdev:
2784 free_local_pdev(pdev);
2785
2786 return len;
2787 }
2788
2789
2790 /*
2791 * Display scsi inquiry
2792 */
2793 static int
2794 mega_print_inquiry(char *page, char *scsi_inq)
2795 {
2796 int len = 0;
2797 int i;
2798
2799 len = sprintf(page, " Vendor: ");
2800 for( i = 8; i < 16; i++ ) {
2801 len += sprintf(page+len, "%c", scsi_inq[i]);
2802 }
2803
2804 len += sprintf(page+len, " Model: ");
2805
2806 for( i = 16; i < 32; i++ ) {
2807 len += sprintf(page+len, "%c", scsi_inq[i]);
2808 }
2809
2810 len += sprintf(page+len, " Rev: ");
2811
2812 for( i = 32; i < 36; i++ ) {
2813 len += sprintf(page+len, "%c", scsi_inq[i]);
2814 }
2815
2816 len += sprintf(page+len, "\n");
2817
2818 i = scsi_inq[0] & 0x1f;
2819
2820 len += sprintf(page+len, " Type: %s ",
2821 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2822 "Unknown ");
2823
2824 len += sprintf(page+len,
2825 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2826
2827 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2828 len += sprintf(page+len, " CCS\n");
2829 else
2830 len += sprintf(page+len, "\n");
2831
2832 return len;
2833 }
2834
2835
2836 /**
2837 * proc_rdrv_10()
2838 * @page - buffer to write the data in
2839 * @start - where the actual data has been written in page
2840 * @offset - same meaning as the read system call
2841 * @count - same meaning as the read system call
2842 * @eof - set if no more data needs to be returned
2843 * @data - pointer to our soft state
2844 *
2845 * Display real time information about the logical drives 0 through 9.
2846 */
2847 static int
2848 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2849 void *data)
2850 {
2851 adapter_t *adapter = (adapter_t *)data;
2852
2853 *eof = 1;
2854
2855 return (proc_rdrv(adapter, page, 0, 9));
2856 }
2857
2858
2859 /**
2860 * proc_rdrv_20()
2861 * @page - buffer to write the data in
2862 * @start - where the actual data has been written in page
2863 * @offset - same meaning as the read system call
2864 * @count - same meaning as the read system call
2865 * @eof - set if no more data needs to be returned
2866 * @data - pointer to our soft state
2867 *
2868 * Display real time information about the logical drives 0 through 9.
2869 */
2870 static int
2871 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2872 void *data)
2873 {
2874 adapter_t *adapter = (adapter_t *)data;
2875
2876 *eof = 1;
2877
2878 return (proc_rdrv(adapter, page, 10, 19));
2879 }
2880
2881
2882 /**
2883 * proc_rdrv_30()
2884 * @page - buffer to write the data in
2885 * @start - where the actual data has been written in page
2886 * @offset - same meaning as the read system call
2887 * @count - same meaning as the read system call
2888 * @eof - set if no more data needs to be returned
2889 * @data - pointer to our soft state
2890 *
2891 * Display real time information about the logical drives 0 through 9.
2892 */
2893 static int
2894 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2895 void *data)
2896 {
2897 adapter_t *adapter = (adapter_t *)data;
2898
2899 *eof = 1;
2900
2901 return (proc_rdrv(adapter, page, 20, 29));
2902 }
2903
2904
2905 /**
2906 * proc_rdrv_40()
2907 * @page - buffer to write the data in
2908 * @start - where the actual data has been written in page
2909 * @offset - same meaning as the read system call
2910 * @count - same meaning as the read system call
2911 * @eof - set if no more data needs to be returned
2912 * @data - pointer to our soft state
2913 *
2914 * Display real time information about the logical drives 0 through 9.
2915 */
2916 static int
2917 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2918 void *data)
2919 {
2920 adapter_t *adapter = (adapter_t *)data;
2921
2922 *eof = 1;
2923
2924 return (proc_rdrv(adapter, page, 30, 39));
2925 }
2926
2927
2928 /**
2929 * proc_rdrv()
2930 * @page - buffer to write the data in
2931 * @adapter - pointer to our soft state
2932 * @start - starting logical drive to display
2933 * @end - ending logical drive to display
2934 *
2935 * We do not print the inquiry information since its already available through
2936 * /proc/scsi/scsi interface
2937 */
2938 static int
2939 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2940 {
2941 dma_addr_t dma_handle;
2942 logdrv_param *lparam;
2943 megacmd_t mc;
2944 char *disk_array;
2945 dma_addr_t disk_array_dma_handle;
2946 caddr_t inquiry;
2947 struct pci_dev *pdev;
2948 u8 *rdrv_state;
2949 int num_ldrv;
2950 u32 array_sz;
2951 int len = 0;
2952 int i;
2953
2954 if( make_local_pdev(adapter, &pdev) != 0 ) {
2955 return len;
2956 }
2957
2958 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2959 free_local_pdev(pdev);
2960 return len;
2961 }
2962
2963 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2964
2965 len = sprintf(page, "Adapter inquiry failed.\n");
2966
2967 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2968
2969 mega_free_inquiry(inquiry, dma_handle, pdev);
2970
2971 free_local_pdev(pdev);
2972
2973 return len;
2974 }
2975
2976 memset(&mc, 0, sizeof(megacmd_t));
2977
2978 if( adapter->flag & BOARD_40LD ) {
2979 array_sz = sizeof(disk_array_40ld);
2980
2981 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2982
2983 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2984 }
2985 else {
2986 array_sz = sizeof(disk_array_8ld);
2987
2988 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2989 raid_inq.logdrv_info.ldrv_state;
2990
2991 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2992 raid_inq.logdrv_info.num_ldrv;
2993 }
2994
2995 disk_array = pci_alloc_consistent(pdev, array_sz,
2996 &disk_array_dma_handle);
2997
2998 if( disk_array == NULL ) {
2999 len = sprintf(page, "memory not available.\n");
3000
3001 mega_free_inquiry(inquiry, dma_handle, pdev);
3002
3003 free_local_pdev(pdev);
3004
3005 return len;
3006 }
3007
3008 mc.xferaddr = (u32)disk_array_dma_handle;
3009
3010 if( adapter->flag & BOARD_40LD ) {
3011 mc.cmd = FC_NEW_CONFIG;
3012 mc.opcode = OP_DCMD_READ_CONFIG;
3013
3014 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3015
3016 len = sprintf(page, "40LD read config failed.\n");
3017
3018 mega_free_inquiry(inquiry, dma_handle, pdev);
3019
3020 pci_free_consistent(pdev, array_sz, disk_array,
3021 disk_array_dma_handle);
3022
3023 free_local_pdev(pdev);
3024
3025 return len;
3026 }
3027
3028 }
3029 else {
3030 mc.cmd = NEW_READ_CONFIG_8LD;
3031
3032 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3033
3034 mc.cmd = READ_CONFIG_8LD;
3035
3036 if( mega_internal_command(adapter, LOCK_INT, &mc,
3037 NULL) ){
3038
3039 len = sprintf(page,
3040 "8LD read config failed.\n");
3041
3042 mega_free_inquiry(inquiry, dma_handle, pdev);
3043
3044 pci_free_consistent(pdev, array_sz,
3045 disk_array,
3046 disk_array_dma_handle);
3047
3048 free_local_pdev(pdev);
3049
3050 return len;
3051 }
3052 }
3053 }
3054
3055 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3056
3057 if( adapter->flag & BOARD_40LD ) {
3058 lparam =
3059 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3060 }
3061 else {
3062 lparam =
3063 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3064 }
3065
3066 /*
3067 * Check for overflow. We print less than 240 characters for
3068 * information about each logical drive.
3069 */
3070 if( (len + 240) >= PAGE_SIZE ) break;
3071
3072 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3073
3074 switch( rdrv_state[i] & 0x0F ) {
3075 case RDRV_OFFLINE:
3076 len += sprintf(page+len, "state: offline");
3077 break;
3078
3079 case RDRV_DEGRADED:
3080 len += sprintf(page+len, "state: degraded");
3081 break;
3082
3083 case RDRV_OPTIMAL:
3084 len += sprintf(page+len, "state: optimal");
3085 break;
3086
3087 case RDRV_DELETED:
3088 len += sprintf(page+len, "state: deleted");
3089 break;
3090
3091 default:
3092 len += sprintf(page+len, "state: unknown");
3093 break;
3094 }
3095
3096 /*
3097 * Check if check consistency or initialization is going on
3098 * for this logical drive.
3099 */
3100 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3101 len += sprintf(page+len,
3102 ", check-consistency in progress");
3103 }
3104 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3105 len += sprintf(page+len,
3106 ", initialization in progress");
3107 }
3108
3109 len += sprintf(page+len, "\n");
3110
3111 len += sprintf(page+len, "Span depth:%3d, ",
3112 lparam->span_depth);
3113
3114 len += sprintf(page+len, "RAID level:%3d, ",
3115 lparam->level);
3116
3117 len += sprintf(page+len, "Stripe size:%3d, ",
3118 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3119
3120 len += sprintf(page+len, "Row size:%3d\n",
3121 lparam->row_size);
3122
3123
3124 len += sprintf(page+len, "Read Policy: ");
3125
3126 switch(lparam->read_ahead) {
3127
3128 case NO_READ_AHEAD:
3129 len += sprintf(page+len, "No read ahead, ");
3130 break;
3131
3132 case READ_AHEAD:
3133 len += sprintf(page+len, "Read ahead, ");
3134 break;
3135
3136 case ADAP_READ_AHEAD:
3137 len += sprintf(page+len, "Adaptive, ");
3138 break;
3139
3140 }
3141
3142 len += sprintf(page+len, "Write Policy: ");
3143
3144 switch(lparam->write_mode) {
3145
3146 case WRMODE_WRITE_THRU:
3147 len += sprintf(page+len, "Write thru, ");
3148 break;
3149
3150 case WRMODE_WRITE_BACK:
3151 len += sprintf(page+len, "Write back, ");
3152 break;
3153 }
3154
3155 len += sprintf(page+len, "Cache Policy: ");
3156
3157 switch(lparam->direct_io) {
3158
3159 case CACHED_IO:
3160 len += sprintf(page+len, "Cached IO\n\n");
3161 break;
3162
3163 case DIRECT_IO:
3164 len += sprintf(page+len, "Direct IO\n\n");
3165 break;
3166 }
3167 }
3168
3169 mega_free_inquiry(inquiry, dma_handle, pdev);
3170
3171 pci_free_consistent(pdev, array_sz, disk_array,
3172 disk_array_dma_handle);
3173
3174 free_local_pdev(pdev);
3175
3176 return len;
3177 }
3178
3179 #endif
3180
3181
3182 /**
3183 * megaraid_biosparam()
3184 *
3185 * Return the disk geometry for a particular disk
3186 */
3187 static int
3188 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3189 sector_t capacity, int geom[])
3190 {
3191 adapter_t *adapter;
3192 unsigned char *bh;
3193 int heads;
3194 int sectors;
3195 int cylinders;
3196 int rval;
3197
3198 /* Get pointer to host config structure */
3199 adapter = (adapter_t *)sdev->host->hostdata;
3200
3201 if (IS_RAID_CH(adapter, sdev->channel)) {
3202 /* Default heads (64) & sectors (32) */
3203 heads = 64;
3204 sectors = 32;
3205 cylinders = (ulong)capacity / (heads * sectors);
3206
3207 /*
3208 * Handle extended translation size for logical drives
3209 * > 1Gb
3210 */
3211 if ((ulong)capacity >= 0x200000) {
3212 heads = 255;
3213 sectors = 63;
3214 cylinders = (ulong)capacity / (heads * sectors);
3215 }
3216
3217 /* return result */
3218 geom[0] = heads;
3219 geom[1] = sectors;
3220 geom[2] = cylinders;
3221 }
3222 else {
3223 bh = scsi_bios_ptable(bdev);
3224
3225 if( bh ) {
3226 rval = scsi_partsize(bh, capacity,
3227 &geom[2], &geom[0], &geom[1]);
3228 kfree(bh);
3229 if( rval != -1 )
3230 return rval;
3231 }
3232
3233 printk(KERN_INFO
3234 "megaraid: invalid partition on this disk on channel %d\n",
3235 sdev->channel);
3236
3237 /* Default heads (64) & sectors (32) */
3238 heads = 64;
3239 sectors = 32;
3240 cylinders = (ulong)capacity / (heads * sectors);
3241
3242 /* Handle extended translation size for logical drives > 1Gb */
3243 if ((ulong)capacity >= 0x200000) {
3244 heads = 255;
3245 sectors = 63;
3246 cylinders = (ulong)capacity / (heads * sectors);
3247 }
3248
3249 /* return result */
3250 geom[0] = heads;
3251 geom[1] = sectors;
3252 geom[2] = cylinders;
3253 }
3254
3255 return 0;
3256 }
3257
3258 /**
3259 * mega_init_scb()
3260 * @adapter - pointer to our soft state
3261 *
3262 * Allocate memory for the various pointers in the scb structures:
3263 * scatter-gather list pointer, passthru and extended passthru structure
3264 * pointers.
3265 */
3266 static int
3267 mega_init_scb(adapter_t *adapter)
3268 {
3269 scb_t *scb;
3270 int i;
3271
3272 for( i = 0; i < adapter->max_cmds; i++ ) {
3273
3274 scb = &adapter->scb_list[i];
3275
3276 scb->sgl64 = NULL;
3277 scb->sgl = NULL;
3278 scb->pthru = NULL;
3279 scb->epthru = NULL;
3280 }
3281
3282 for( i = 0; i < adapter->max_cmds; i++ ) {
3283
3284 scb = &adapter->scb_list[i];
3285
3286 scb->idx = i;
3287
3288 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3289 sizeof(mega_sgl64) * adapter->sglen,
3290 &scb->sgl_dma_addr);
3291
3292 scb->sgl = (mega_sglist *)scb->sgl64;
3293
3294 if( !scb->sgl ) {
3295 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3296 mega_free_sgl(adapter);
3297 return -1;
3298 }
3299
3300 scb->pthru = pci_alloc_consistent(adapter->dev,
3301 sizeof(mega_passthru),
3302 &scb->pthru_dma_addr);
3303
3304 if( !scb->pthru ) {
3305 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3306 mega_free_sgl(adapter);
3307 return -1;
3308 }
3309
3310 scb->epthru = pci_alloc_consistent(adapter->dev,
3311 sizeof(mega_ext_passthru),
3312 &scb->epthru_dma_addr);
3313
3314 if( !scb->epthru ) {
3315 printk(KERN_WARNING
3316 "Can't allocate extended passthru.\n");
3317 mega_free_sgl(adapter);
3318 return -1;
3319 }
3320
3321
3322 scb->dma_type = MEGA_DMA_TYPE_NONE;
3323
3324 /*
3325 * Link to free list
3326 * lock not required since we are loading the driver, so no
3327 * commands possible right now.
3328 */
3329 scb->state = SCB_FREE;
3330 scb->cmd = NULL;
3331 list_add(&scb->list, &adapter->free_list);
3332 }
3333
3334 return 0;
3335 }
3336
3337
3338 /**
3339 * megadev_open()
3340 * @inode - unused
3341 * @filep - unused
3342 *
3343 * Routines for the character/ioctl interface to the driver. Find out if this
3344 * is a valid open. If yes, increment the module use count so that it cannot
3345 * be unloaded.
3346 */
3347 static int
3348 megadev_open (struct inode *inode, struct file *filep)
3349 {
3350 /*
3351 * Only allow superuser to access private ioctl interface
3352 */
3353 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3354
3355 return 0;
3356 }
3357
3358
3359 /**
3360 * megadev_ioctl()
3361 * @inode - Our device inode
3362 * @filep - unused
3363 * @cmd - ioctl command
3364 * @arg - user buffer
3365 *
3366 * ioctl entry point for our private ioctl interface. We move the data in from
3367 * the user space, prepare the command (if necessary, convert the old MIMD
3368 * ioctl to new ioctl command), and issue a synchronous command to the
3369 * controller.
3370 */
3371 static int
3372 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3373 unsigned long arg)
3374 {
3375 adapter_t *adapter;
3376 nitioctl_t uioc;
3377 int adapno;
3378 int rval;
3379 mega_passthru __user *upthru; /* user address for passthru */
3380 mega_passthru *pthru; /* copy user passthru here */
3381 dma_addr_t pthru_dma_hndl;
3382 void *data = NULL; /* data to be transferred */
3383 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3384 megacmd_t mc;
3385 megastat_t __user *ustats;
3386 int num_ldrv;
3387 u32 uxferaddr = 0;
3388 struct pci_dev *pdev;
3389
3390 ustats = NULL; /* avoid compilation warnings */
3391 num_ldrv = 0;
3392
3393 /*
3394 * Make sure only USCSICMD are issued through this interface.
3395 * MIMD application would still fire different command.
3396 */
3397 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3398 return -EINVAL;
3399 }
3400
3401 /*
3402 * Check and convert a possible MIMD command to NIT command.
3403 * mega_m_to_n() copies the data from the user space, so we do not
3404 * have to do it here.
3405 * NOTE: We will need some user address to copyout the data, therefore
3406 * the inteface layer will also provide us with the required user
3407 * addresses.
3408 */
3409 memset(&uioc, 0, sizeof(nitioctl_t));
3410 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3411 return rval;
3412
3413
3414 switch( uioc.opcode ) {
3415
3416 case GET_DRIVER_VER:
3417 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3418 return (-EFAULT);
3419
3420 break;
3421
3422 case GET_N_ADAP:
3423 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3424 return (-EFAULT);
3425
3426 /*
3427 * Shucks. MIMD interface returns a positive value for number
3428 * of adapters. TODO: Change it to return 0 when there is no
3429 * applicatio using mimd interface.
3430 */
3431 return hba_count;
3432
3433 case GET_ADAP_INFO:
3434
3435 /*
3436 * Which adapter
3437 */
3438 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3439 return (-ENODEV);
3440
3441 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3442 sizeof(struct mcontroller)) )
3443 return (-EFAULT);
3444 break;
3445
3446 #if MEGA_HAVE_STATS
3447
3448 case GET_STATS:
3449 /*
3450 * Which adapter
3451 */
3452 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3453 return (-ENODEV);
3454
3455 adapter = hba_soft_state[adapno];
3456
3457 ustats = uioc.uioc_uaddr;
3458
3459 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3460 return (-EFAULT);
3461
3462 /*
3463 * Check for the validity of the logical drive number
3464 */
3465 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3466
3467 if( copy_to_user(ustats->nreads, adapter->nreads,
3468 num_ldrv*sizeof(u32)) )
3469 return -EFAULT;
3470
3471 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3472 num_ldrv*sizeof(u32)) )
3473 return -EFAULT;
3474
3475 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3476 num_ldrv*sizeof(u32)) )
3477 return -EFAULT;
3478
3479 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3480 num_ldrv*sizeof(u32)) )
3481 return -EFAULT;
3482
3483 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3484 num_ldrv*sizeof(u32)) )
3485 return -EFAULT;
3486
3487 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3488 num_ldrv*sizeof(u32)) )
3489 return -EFAULT;
3490
3491 return 0;
3492
3493 #endif
3494 case MBOX_CMD:
3495
3496 /*
3497 * Which adapter
3498 */
3499 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3500 return (-ENODEV);
3501
3502 adapter = hba_soft_state[adapno];
3503
3504 /*
3505 * Deletion of logical drive is a special case. The adapter
3506 * should be quiescent before this command is issued.
3507 */
3508 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3509 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3510
3511 /*
3512 * Do we support this feature
3513 */
3514 if( !adapter->support_random_del ) {
3515 printk(KERN_WARNING "megaraid: logdrv ");
3516 printk("delete on non-supporting F/W.\n");
3517
3518 return (-EINVAL);
3519 }
3520
3521 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3522
3523 if( rval == 0 ) {
3524 memset(&mc, 0, sizeof(megacmd_t));
3525
3526 mc.status = rval;
3527
3528 rval = mega_n_to_m((void __user *)arg, &mc);
3529 }
3530
3531 return rval;
3532 }
3533 /*
3534 * This interface only support the regular passthru commands.
3535 * Reject extended passthru and 64-bit passthru
3536 */
3537 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3538 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3539
3540 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3541
3542 return (-EINVAL);
3543 }
3544
3545 /*
3546 * For all internal commands, the buffer must be allocated in
3547 * <4GB address range
3548 */
3549 if( make_local_pdev(adapter, &pdev) != 0 )
3550 return -EIO;
3551
3552 /* Is it a passthru command or a DCMD */
3553 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3554 /* Passthru commands */
3555
3556 pthru = pci_alloc_consistent(pdev,
3557 sizeof(mega_passthru),
3558 &pthru_dma_hndl);
3559
3560 if( pthru == NULL ) {
3561 free_local_pdev(pdev);
3562 return (-ENOMEM);
3563 }
3564
3565 /*
3566 * The user passthru structure
3567 */
3568 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3569
3570 /*
3571 * Copy in the user passthru here.
3572 */
3573 if( copy_from_user(pthru, upthru,
3574 sizeof(mega_passthru)) ) {
3575
3576 pci_free_consistent(pdev,
3577 sizeof(mega_passthru), pthru,
3578 pthru_dma_hndl);
3579
3580 free_local_pdev(pdev);
3581
3582 return (-EFAULT);
3583 }
3584
3585 /*
3586 * Is there a data transfer
3587 */
3588 if( pthru->dataxferlen ) {
3589 data = pci_alloc_consistent(pdev,
3590 pthru->dataxferlen,
3591 &data_dma_hndl);
3592
3593 if( data == NULL ) {
3594 pci_free_consistent(pdev,
3595 sizeof(mega_passthru),
3596 pthru,
3597 pthru_dma_hndl);
3598
3599 free_local_pdev(pdev);
3600
3601 return (-ENOMEM);
3602 }
3603
3604 /*
3605 * Save the user address and point the kernel
3606 * address at just allocated memory
3607 */
3608 uxferaddr = pthru->dataxferaddr;
3609 pthru->dataxferaddr = data_dma_hndl;
3610 }
3611
3612
3613 /*
3614 * Is data coming down-stream
3615 */
3616 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3617 /*
3618 * Get the user data
3619 */
3620 if( copy_from_user(data, (char __user *)uxferaddr,
3621 pthru->dataxferlen) ) {
3622 rval = (-EFAULT);
3623 goto freemem_and_return;
3624 }
3625 }
3626
3627 memset(&mc, 0, sizeof(megacmd_t));
3628
3629 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3630 mc.xferaddr = (u32)pthru_dma_hndl;
3631
3632 /*
3633 * Issue the command
3634 */
3635 mega_internal_command(adapter, LOCK_INT, &mc, pthru);
3636
3637 rval = mega_n_to_m((void __user *)arg, &mc);
3638
3639 if( rval ) goto freemem_and_return;
3640
3641
3642 /*
3643 * Is data going up-stream
3644 */
3645 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3646 if( copy_to_user((char __user *)uxferaddr, data,
3647 pthru->dataxferlen) ) {
3648 rval = (-EFAULT);
3649 }
3650 }
3651
3652 /*
3653 * Send the request sense data also, irrespective of
3654 * whether the user has asked for it or not.
3655 */
3656 copy_to_user(upthru->reqsensearea,
3657 pthru->reqsensearea, 14);
3658
3659 freemem_and_return:
3660 if( pthru->dataxferlen ) {
3661 pci_free_consistent(pdev,
3662 pthru->dataxferlen, data,
3663 data_dma_hndl);
3664 }
3665
3666 pci_free_consistent(pdev, sizeof(mega_passthru),
3667 pthru, pthru_dma_hndl);
3668
3669 free_local_pdev(pdev);
3670
3671 return rval;
3672 }
3673 else {
3674 /* DCMD commands */
3675
3676 /*
3677 * Is there a data transfer
3678 */
3679 if( uioc.xferlen ) {
3680 data = pci_alloc_consistent(pdev,
3681 uioc.xferlen, &data_dma_hndl);
3682
3683 if( data == NULL ) {
3684 free_local_pdev(pdev);
3685 return (-ENOMEM);
3686 }
3687
3688 uxferaddr = MBOX(uioc)->xferaddr;
3689 }
3690
3691 /*
3692 * Is data coming down-stream
3693 */
3694 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3695 /*
3696 * Get the user data
3697 */
3698 if( copy_from_user(data, (char __user *)uxferaddr,
3699 uioc.xferlen) ) {
3700
3701 pci_free_consistent(pdev,
3702 uioc.xferlen,
3703 data, data_dma_hndl);
3704
3705 free_local_pdev(pdev);
3706
3707 return (-EFAULT);
3708 }
3709 }
3710
3711 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3712
3713 mc.xferaddr = (u32)data_dma_hndl;
3714
3715 /*
3716 * Issue the command
3717 */
3718 mega_internal_command(adapter, LOCK_INT, &mc, NULL);
3719
3720 rval = mega_n_to_m((void __user *)arg, &mc);
3721
3722 if( rval ) {
3723 if( uioc.xferlen ) {
3724 pci_free_consistent(pdev,
3725 uioc.xferlen, data,
3726 data_dma_hndl);
3727 }
3728
3729 free_local_pdev(pdev);
3730
3731 return rval;
3732 }
3733
3734 /*
3735 * Is data going up-stream
3736 */
3737 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3738 if( copy_to_user((char __user *)uxferaddr, data,
3739 uioc.xferlen) ) {
3740
3741 rval = (-EFAULT);
3742 }
3743 }
3744
3745 if( uioc.xferlen ) {
3746 pci_free_consistent(pdev,
3747 uioc.xferlen, data,
3748 data_dma_hndl);
3749 }
3750
3751 free_local_pdev(pdev);
3752
3753 return rval;
3754 }
3755
3756 default:
3757 return (-EINVAL);
3758 }
3759
3760 return 0;
3761 }
3762
3763 /**
3764 * mega_m_to_n()
3765 * @arg - user address
3766 * @uioc - new ioctl structure
3767 *
3768 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3769 * structure
3770 *
3771 * Converts the older mimd ioctl structure to newer NIT structure
3772 */
3773 static int
3774 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3775 {
3776 struct uioctl_t uioc_mimd;
3777 char signature[8] = {0};
3778 u8 opcode;
3779 u8 subopcode;
3780
3781
3782 /*
3783 * check is the application conforms to NIT. We do not have to do much
3784 * in that case.
3785 * We exploit the fact that the signature is stored in the very
3786 * begining of the structure.
3787 */
3788
3789 if( copy_from_user(signature, arg, 7) )
3790 return (-EFAULT);
3791
3792 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3793
3794 /*
3795 * NOTE NOTE: The nit ioctl is still under flux because of
3796 * change of mailbox definition, in HPE. No applications yet
3797 * use this interface and let's not have applications use this
3798 * interface till the new specifitions are in place.
3799 */
3800 return -EINVAL;
3801 #if 0
3802 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3803 return (-EFAULT);
3804 return 0;
3805 #endif
3806 }
3807
3808 /*
3809 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3810 *
3811 * Get the user ioctl structure
3812 */
3813 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3814 return (-EFAULT);
3815
3816
3817 /*
3818 * Get the opcode and subopcode for the commands
3819 */
3820 opcode = uioc_mimd.ui.fcs.opcode;
3821 subopcode = uioc_mimd.ui.fcs.subopcode;
3822
3823 switch (opcode) {
3824 case 0x82:
3825
3826 switch (subopcode) {
3827
3828 case MEGAIOC_QDRVRVER: /* Query driver version */
3829 uioc->opcode = GET_DRIVER_VER;
3830 uioc->uioc_uaddr = uioc_mimd.data;
3831 break;
3832
3833 case MEGAIOC_QNADAP: /* Get # of adapters */
3834 uioc->opcode = GET_N_ADAP;
3835 uioc->uioc_uaddr = uioc_mimd.data;
3836 break;
3837
3838 case MEGAIOC_QADAPINFO: /* Get adapter information */
3839 uioc->opcode = GET_ADAP_INFO;
3840 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3841 uioc->uioc_uaddr = uioc_mimd.data;
3842 break;
3843
3844 default:
3845 return(-EINVAL);
3846 }
3847
3848 break;
3849
3850
3851 case 0x81:
3852
3853 uioc->opcode = MBOX_CMD;
3854 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3855
3856 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3857
3858 uioc->xferlen = uioc_mimd.ui.fcs.length;
3859
3860 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3861 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3862
3863 break;
3864
3865 case 0x80:
3866
3867 uioc->opcode = MBOX_CMD;
3868 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3869
3870 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3871
3872 /*
3873 * Choose the xferlen bigger of input and output data
3874 */
3875 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3876 uioc_mimd.outlen : uioc_mimd.inlen;
3877
3878 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3879 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3880
3881 break;
3882
3883 default:
3884 return (-EINVAL);
3885
3886 }
3887
3888 return 0;
3889 }
3890
3891 /*
3892 * mega_n_to_m()
3893 * @arg - user address
3894 * @mc - mailbox command
3895 *
3896 * Updates the status information to the application, depending on application
3897 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3898 */
3899 static int
3900 mega_n_to_m(void __user *arg, megacmd_t *mc)
3901 {
3902 nitioctl_t __user *uiocp;
3903 megacmd_t __user *umc;
3904 mega_passthru __user *upthru;
3905 struct uioctl_t __user *uioc_mimd;
3906 char signature[8] = {0};
3907
3908 /*
3909 * check is the application conforms to NIT.
3910 */
3911 if( copy_from_user(signature, arg, 7) )
3912 return -EFAULT;
3913
3914 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3915
3916 uiocp = arg;
3917
3918 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3919 return (-EFAULT);
3920
3921 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3922
3923 umc = MBOX_P(uiocp);
3924
3925 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3926 return -EFAULT;
3927
3928 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3929 return (-EFAULT);
3930 }
3931 }
3932 else {
3933 uioc_mimd = arg;
3934
3935 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3936 return (-EFAULT);
3937
3938 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3939
3940 umc = (megacmd_t __user *)uioc_mimd->mbox;
3941
3942 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3943 return (-EFAULT);
3944
3945 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3946 return (-EFAULT);
3947 }
3948 }
3949
3950 return 0;
3951 }
3952
3953
3954 /*
3955 * MEGARAID 'FW' commands.
3956 */
3957
3958 /**
3959 * mega_is_bios_enabled()
3960 * @adapter - pointer to our soft state
3961 *
3962 * issue command to find out if the BIOS is enabled for this controller
3963 */
3964 static int
3965 mega_is_bios_enabled(adapter_t *adapter)
3966 {
3967 unsigned char raw_mbox[sizeof(struct mbox_out)];
3968 mbox_t *mbox;
3969 int ret;
3970
3971 mbox = (mbox_t *)raw_mbox;
3972
3973 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3974
3975 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3976
3977 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3978
3979 raw_mbox[0] = IS_BIOS_ENABLED;
3980 raw_mbox[2] = GET_BIOS;
3981
3982
3983 ret = issue_scb_block(adapter, raw_mbox);
3984
3985 return *(char *)adapter->mega_buffer;
3986 }
3987
3988
3989 /**
3990 * mega_enum_raid_scsi()
3991 * @adapter - pointer to our soft state
3992 *
3993 * Find out what channels are RAID/SCSI. This information is used to
3994 * differentiate the virtual channels and physical channels and to support
3995 * ROMB feature and non-disk devices.
3996 */
3997 static void
3998 mega_enum_raid_scsi(adapter_t *adapter)
3999 {
4000 unsigned char raw_mbox[sizeof(struct mbox_out)];
4001 mbox_t *mbox;
4002 int i;
4003
4004 mbox = (mbox_t *)raw_mbox;
4005
4006 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4007
4008 /*
4009 * issue command to find out what channels are raid/scsi
4010 */
4011 raw_mbox[0] = CHNL_CLASS;
4012 raw_mbox[2] = GET_CHNL_CLASS;
4013
4014 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4015
4016 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4017
4018 /*
4019 * Non-ROMB firmware fail this command, so all channels
4020 * must be shown RAID
4021 */
4022 adapter->mega_ch_class = 0xFF;
4023
4024 if(!issue_scb_block(adapter, raw_mbox)) {
4025 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4026
4027 }
4028
4029 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4030 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4031 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4032 i);
4033 }
4034 else {
4035 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4036 i);
4037 }
4038 }
4039
4040 return;
4041 }
4042
4043
4044 /**
4045 * mega_get_boot_drv()
4046 * @adapter - pointer to our soft state
4047 *
4048 * Find out which device is the boot device. Note, any logical drive or any
4049 * phyical device (e.g., a CDROM) can be designated as a boot device.
4050 */
4051 static void
4052 mega_get_boot_drv(adapter_t *adapter)
4053 {
4054 struct private_bios_data *prv_bios_data;
4055 unsigned char raw_mbox[sizeof(struct mbox_out)];
4056 mbox_t *mbox;
4057 u16 cksum = 0;
4058 u8 *cksum_p;
4059 u8 boot_pdrv;
4060 int i;
4061
4062 mbox = (mbox_t *)raw_mbox;
4063
4064 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4065
4066 raw_mbox[0] = BIOS_PVT_DATA;
4067 raw_mbox[2] = GET_BIOS_PVT_DATA;
4068
4069 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4070
4071 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4072
4073 adapter->boot_ldrv_enabled = 0;
4074 adapter->boot_ldrv = 0;
4075
4076 adapter->boot_pdrv_enabled = 0;
4077 adapter->boot_pdrv_ch = 0;
4078 adapter->boot_pdrv_tgt = 0;
4079
4080 if(issue_scb_block(adapter, raw_mbox) == 0) {
4081 prv_bios_data =
4082 (struct private_bios_data *)adapter->mega_buffer;
4083
4084 cksum = 0;
4085 cksum_p = (char *)prv_bios_data;
4086 for (i = 0; i < 14; i++ ) {
4087 cksum += (u16)(*cksum_p++);
4088 }
4089
4090 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4091
4092 /*
4093 * If MSB is set, a physical drive is set as boot
4094 * device
4095 */
4096 if( prv_bios_data->boot_drv & 0x80 ) {
4097 adapter->boot_pdrv_enabled = 1;
4098 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4099 adapter->boot_pdrv_ch = boot_pdrv / 16;
4100 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4101 }
4102 else {
4103 adapter->boot_ldrv_enabled = 1;
4104 adapter->boot_ldrv = prv_bios_data->boot_drv;
4105 }
4106 }
4107 }
4108
4109 }
4110
4111 /**
4112 * mega_support_random_del()
4113 * @adapter - pointer to our soft state
4114 *
4115 * Find out if this controller supports random deletion and addition of
4116 * logical drives
4117 */
4118 static int
4119 mega_support_random_del(adapter_t *adapter)
4120 {
4121 unsigned char raw_mbox[sizeof(struct mbox_out)];
4122 mbox_t *mbox;
4123 int rval;
4124
4125 mbox = (mbox_t *)raw_mbox;
4126
4127 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4128
4129 /*
4130 * issue command
4131 */
4132 raw_mbox[0] = FC_DEL_LOGDRV;
4133 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4134
4135 rval = issue_scb_block(adapter, raw_mbox);
4136
4137 return !rval;
4138 }
4139
4140
4141 /**
4142 * mega_support_ext_cdb()
4143 * @adapter - pointer to our soft state
4144 *
4145 * Find out if this firmware support cdblen > 10
4146 */
4147 static int
4148 mega_support_ext_cdb(adapter_t *adapter)
4149 {
4150 unsigned char raw_mbox[sizeof(struct mbox_out)];
4151 mbox_t *mbox;
4152 int rval;
4153
4154 mbox = (mbox_t *)raw_mbox;
4155
4156 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4157 /*
4158 * issue command to find out if controller supports extended CDBs.
4159 */
4160 raw_mbox[0] = 0xA4;
4161 raw_mbox[2] = 0x16;
4162
4163 rval = issue_scb_block(adapter, raw_mbox);
4164
4165 return !rval;
4166 }
4167
4168
4169 /**
4170 * mega_del_logdrv()
4171 * @adapter - pointer to our soft state
4172 * @logdrv - logical drive to be deleted
4173 *
4174 * Delete the specified logical drive. It is the responsibility of the user
4175 * app to let the OS know about this operation.
4176 */
4177 static int
4178 mega_del_logdrv(adapter_t *adapter, int logdrv)
4179 {
4180 unsigned long flags;
4181 scb_t *scb;
4182 int rval;
4183
4184 /*
4185 * Stop sending commands to the controller, queue them internally.
4186 * When deletion is complete, ISR will flush the queue.
4187 */
4188 atomic_set(&adapter->quiescent, 1);
4189
4190 /*
4191 * Wait till all the issued commands are complete and there are no
4192 * commands in the pending queue
4193 */
4194 while (atomic_read(&adapter->pend_cmds) > 0 ||
4195 !list_empty(&adapter->pending_list))
4196 msleep(1000); /* sleep for 1s */
4197
4198 rval = mega_do_del_logdrv(adapter, logdrv);
4199
4200 spin_lock_irqsave(&adapter->lock, flags);
4201
4202 /*
4203 * If delete operation was successful, add 0x80 to the logical drive
4204 * ids for commands in the pending queue.
4205 */
4206 if (adapter->read_ldidmap) {
4207 struct list_head *pos;
4208 list_for_each(pos, &adapter->pending_list) {
4209 scb = list_entry(pos, scb_t, list);
4210 if (scb->pthru->logdrv < 0x80 )
4211 scb->pthru->logdrv += 0x80;
4212 }
4213 }
4214
4215 atomic_set(&adapter->quiescent, 0);
4216
4217 mega_runpendq(adapter);
4218
4219 spin_unlock_irqrestore(&adapter->lock, flags);
4220
4221 return rval;
4222 }
4223
4224
4225 static int
4226 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4227 {
4228 megacmd_t mc;
4229 int rval;
4230
4231 memset( &mc, 0, sizeof(megacmd_t));
4232
4233 mc.cmd = FC_DEL_LOGDRV;
4234 mc.opcode = OP_DEL_LOGDRV;
4235 mc.subopcode = logdrv;
4236
4237 rval = mega_internal_command(adapter, LOCK_INT, &mc, NULL);
4238
4239 /* log this event */
4240 if(rval) {
4241 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4242 return rval;
4243 }
4244
4245 /*
4246 * After deleting first logical drive, the logical drives must be
4247 * addressed by adding 0x80 to the logical drive id.
4248 */
4249 adapter->read_ldidmap = 1;
4250
4251 return rval;
4252 }
4253
4254
4255 /**
4256 * mega_get_max_sgl()
4257 * @adapter - pointer to our soft state
4258 *
4259 * Find out the maximum number of scatter-gather elements supported by this
4260 * version of the firmware
4261 */
4262 static void
4263 mega_get_max_sgl(adapter_t *adapter)
4264 {
4265 unsigned char raw_mbox[sizeof(struct mbox_out)];
4266 mbox_t *mbox;
4267
4268 mbox = (mbox_t *)raw_mbox;
4269
4270 memset(mbox, 0, sizeof(raw_mbox));
4271
4272 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4273
4274 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4275
4276 raw_mbox[0] = MAIN_MISC_OPCODE;
4277 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4278
4279
4280 if( issue_scb_block(adapter, raw_mbox) ) {
4281 /*
4282 * f/w does not support this command. Choose the default value
4283 */
4284 adapter->sglen = MIN_SGLIST;
4285 }
4286 else {
4287 adapter->sglen = *((char *)adapter->mega_buffer);
4288
4289 /*
4290 * Make sure this is not more than the resources we are
4291 * planning to allocate
4292 */
4293 if ( adapter->sglen > MAX_SGLIST )
4294 adapter->sglen = MAX_SGLIST;
4295 }
4296
4297 return;
4298 }
4299
4300
4301 /**
4302 * mega_support_cluster()
4303 * @adapter - pointer to our soft state
4304 *
4305 * Find out if this firmware support cluster calls.
4306 */
4307 static int
4308 mega_support_cluster(adapter_t *adapter)
4309 {
4310 unsigned char raw_mbox[sizeof(struct mbox_out)];
4311 mbox_t *mbox;
4312
4313 mbox = (mbox_t *)raw_mbox;
4314
4315 memset(mbox, 0, sizeof(raw_mbox));
4316
4317 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4318
4319 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4320
4321 /*
4322 * Try to get the initiator id. This command will succeed iff the
4323 * clustering is available on this HBA.
4324 */
4325 raw_mbox[0] = MEGA_GET_TARGET_ID;
4326
4327 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4328
4329 /*
4330 * Cluster support available. Get the initiator target id.
4331 * Tell our id to mid-layer too.
4332 */
4333 adapter->this_id = *(u32 *)adapter->mega_buffer;
4334 adapter->host->this_id = adapter->this_id;
4335
4336 return 1;
4337 }
4338
4339 return 0;
4340 }
4341
4342
4343 /**
4344 * mega_adapinq()
4345 * @adapter - pointer to our soft state
4346 * @dma_handle - DMA address of the buffer
4347 *
4348 * Issue internal comamnds while interrupts are available.
4349 * We only issue direct mailbox commands from within the driver. ioctl()
4350 * interface using these routines can issue passthru commands.
4351 */
4352 static int
4353 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4354 {
4355 megacmd_t mc;
4356
4357 memset(&mc, 0, sizeof(megacmd_t));
4358
4359 if( adapter->flag & BOARD_40LD ) {
4360 mc.cmd = FC_NEW_CONFIG;
4361 mc.opcode = NC_SUBOP_ENQUIRY3;
4362 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4363 }
4364 else {
4365 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4366 }
4367
4368 mc.xferaddr = (u32)dma_handle;
4369
4370 if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
4371 return -1;
4372 }
4373
4374 return 0;
4375 }
4376
4377
4378 /** mega_internal_dev_inquiry()
4379 * @adapter - pointer to our soft state
4380 * @ch - channel for this device
4381 * @tgt - ID of this device
4382 * @buf_dma_handle - DMA address of the buffer
4383 *
4384 * Issue the scsi inquiry for the specified device.
4385 */
4386 static int
4387 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4388 dma_addr_t buf_dma_handle)
4389 {
4390 mega_passthru *pthru;
4391 dma_addr_t pthru_dma_handle;
4392 megacmd_t mc;
4393 int rval;
4394 struct pci_dev *pdev;
4395
4396
4397 /*
4398 * For all internal commands, the buffer must be allocated in <4GB
4399 * address range
4400 */
4401 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4402
4403 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4404 &pthru_dma_handle);
4405
4406 if( pthru == NULL ) {
4407 free_local_pdev(pdev);
4408 return -1;
4409 }
4410
4411 pthru->timeout = 2;
4412 pthru->ars = 1;
4413 pthru->reqsenselen = 14;
4414 pthru->islogical = 0;
4415
4416 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4417
4418 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4419
4420 pthru->cdblen = 6;
4421
4422 pthru->cdb[0] = INQUIRY;
4423 pthru->cdb[1] = 0;
4424 pthru->cdb[2] = 0;
4425 pthru->cdb[3] = 0;
4426 pthru->cdb[4] = 255;
4427 pthru->cdb[5] = 0;
4428
4429
4430 pthru->dataxferaddr = (u32)buf_dma_handle;
4431 pthru->dataxferlen = 256;
4432
4433 memset(&mc, 0, sizeof(megacmd_t));
4434
4435 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4436 mc.xferaddr = (u32)pthru_dma_handle;
4437
4438 rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru);
4439
4440 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4441 pthru_dma_handle);
4442
4443 free_local_pdev(pdev);
4444
4445 return rval;
4446 }
4447
4448
4449 /**
4450 * mega_internal_command()
4451 * @adapter - pointer to our soft state
4452 * @ls - the scope of the exclusion lock.
4453 * @mc - the mailbox command
4454 * @pthru - Passthru structure for DCDB commands
4455 *
4456 * Issue the internal commands in interrupt mode.
4457 * The last argument is the address of the passthru structure if the command
4458 * to be fired is a passthru command
4459 *
4460 * lockscope specifies whether the caller has already acquired the lock. Of
4461 * course, the caller must know which lock we are talking about.
4462 *
4463 * Note: parameter 'pthru' is null for non-passthru commands.
4464 */
4465 static int
4466 mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc,
4467 mega_passthru *pthru )
4468 {
4469 Scsi_Cmnd *scmd;
4470 struct scsi_device *sdev;
4471 unsigned long flags = 0;
4472 scb_t *scb;
4473 int rval;
4474
4475 /*
4476 * The internal commands share one command id and hence are
4477 * serialized. This is so because we want to reserve maximum number of
4478 * available command ids for the I/O commands.
4479 */
4480 down(&adapter->int_mtx);
4481
4482 scb = &adapter->int_scb;
4483 memset(scb, 0, sizeof(scb_t));
4484
4485 scmd = &adapter->int_scmd;
4486 memset(scmd, 0, sizeof(Scsi_Cmnd));
4487
4488 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4489 memset(sdev, 0, sizeof(struct scsi_device));
4490 scmd->device = sdev;
4491
4492 scmd->device->host = adapter->host;
4493 scmd->buffer = (void *)scb;
4494 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4495
4496 scb->state |= SCB_ACTIVE;
4497 scb->cmd = scmd;
4498
4499 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4500
4501 /*
4502 * Is it a passthru command
4503 */
4504 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4505
4506 scb->pthru = pthru;
4507 }
4508
4509 scb->idx = CMDID_INT_CMDS;
4510
4511 /*
4512 * Get the lock only if the caller has not acquired it already
4513 */
4514 if( ls == LOCK_INT ) spin_lock_irqsave(&adapter->lock, flags);
4515
4516 megaraid_queue(scmd, mega_internal_done);
4517
4518 if( ls == LOCK_INT ) spin_unlock_irqrestore(&adapter->lock, flags);
4519
4520 wait_for_completion(&adapter->int_waitq);
4521
4522 rval = scmd->result;
4523 mc->status = scmd->result;
4524 kfree(sdev);
4525
4526 /*
4527 * Print a debug message for all failed commands. Applications can use
4528 * this information.
4529 */
4530 if( scmd->result && trace_level ) {
4531 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4532 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4533 }
4534
4535 up(&adapter->int_mtx);
4536
4537 return rval;
4538 }
4539
4540
4541 /**
4542 * mega_internal_done()
4543 * @scmd - internal scsi command
4544 *
4545 * Callback routine for internal commands.
4546 */
4547 static void
4548 mega_internal_done(Scsi_Cmnd *scmd)
4549 {
4550 adapter_t *adapter;
4551
4552 adapter = (adapter_t *)scmd->device->host->hostdata;
4553
4554 complete(&adapter->int_waitq);
4555
4556 }
4557
4558
4559 static struct scsi_host_template megaraid_template = {
4560 .module = THIS_MODULE,
4561 .name = "MegaRAID",
4562 .proc_name = "megaraid",
4563 .info = megaraid_info,
4564 .queuecommand = megaraid_queue,
4565 .bios_param = megaraid_biosparam,
4566 .max_sectors = MAX_SECTORS_PER_IO,
4567 .can_queue = MAX_COMMANDS,
4568 .this_id = DEFAULT_INITIATOR_ID,
4569 .sg_tablesize = MAX_SGLIST,
4570 .cmd_per_lun = DEF_CMD_PER_LUN,
4571 .use_clustering = ENABLE_CLUSTERING,
4572 .eh_abort_handler = megaraid_abort,
4573 .eh_device_reset_handler = megaraid_reset,
4574 .eh_bus_reset_handler = megaraid_reset,
4575 .eh_host_reset_handler = megaraid_reset,
4576 };
4577
4578 static int __devinit
4579 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4580 {
4581 struct Scsi_Host *host;
4582 adapter_t *adapter;
4583 unsigned long mega_baseport, tbase, flag = 0;
4584 u16 subsysid, subsysvid;
4585 u8 pci_bus, pci_dev_func;
4586 int irq, i, j;
4587 int error = -ENODEV;
4588
4589 if (pci_enable_device(pdev))
4590 goto out;
4591 pci_set_master(pdev);
4592
4593 pci_bus = pdev->bus->number;
4594 pci_dev_func = pdev->devfn;
4595
4596 /*
4597 * The megaraid3 stuff reports the ID of the Intel part which is not
4598 * remotely specific to the megaraid
4599 */
4600 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4601 u16 magic;
4602 /*
4603 * Don't fall over the Compaq management cards using the same
4604 * PCI identifier
4605 */
4606 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4607 pdev->subsystem_device == 0xC000)
4608 return -ENODEV;
4609 /* Now check the magic signature byte */
4610 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4611 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4612 return -ENODEV;
4613 /* Ok it is probably a megaraid */
4614 }
4615
4616 /*
4617 * For these vendor and device ids, signature offsets are not
4618 * valid and 64 bit is implicit
4619 */
4620 if (id->driver_data & BOARD_64BIT)
4621 flag |= BOARD_64BIT;
4622 else {
4623 u32 magic64;
4624
4625 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4626 if (magic64 == HBA_SIGNATURE_64BIT)
4627 flag |= BOARD_64BIT;
4628 }
4629
4630 subsysvid = pdev->subsystem_vendor;
4631 subsysid = pdev->subsystem_device;
4632
4633 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4634 id->vendor, id->device, pci_bus);
4635
4636 printk("slot %d:func %d\n",
4637 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4638
4639 /* Read the base port and IRQ from PCI */
4640 mega_baseport = pci_resource_start(pdev, 0);
4641 irq = pdev->irq;
4642
4643 tbase = mega_baseport;
4644 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4645 flag |= BOARD_MEMMAP;
4646
4647 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4648 printk(KERN_WARNING "megaraid: mem region busy!\n");
4649 goto out_disable_device;
4650 }
4651
4652 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4653 if (!mega_baseport) {
4654 printk(KERN_WARNING
4655 "megaraid: could not map hba memory\n");
4656 goto out_release_region;
4657 }
4658 } else {
4659 flag |= BOARD_IOMAP;
4660 mega_baseport += 0x10;
4661
4662 if (!request_region(mega_baseport, 16, "megaraid"))
4663 goto out_disable_device;
4664 }
4665
4666 /* Initialize SCSI Host structure */
4667 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4668 if (!host)
4669 goto out_iounmap;
4670
4671 adapter = (adapter_t *)host->hostdata;
4672 memset(adapter, 0, sizeof(adapter_t));
4673
4674 printk(KERN_NOTICE
4675 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4676 host->host_no, mega_baseport, irq);
4677
4678 adapter->base = mega_baseport;
4679
4680 INIT_LIST_HEAD(&adapter->free_list);
4681 INIT_LIST_HEAD(&adapter->pending_list);
4682 INIT_LIST_HEAD(&adapter->completed_list);
4683
4684 adapter->flag = flag;
4685 spin_lock_init(&adapter->lock);
4686 scsi_assign_lock(host, &adapter->lock);
4687
4688 host->cmd_per_lun = max_cmd_per_lun;
4689 host->max_sectors = max_sectors_per_io;
4690
4691 adapter->dev = pdev;
4692 adapter->host = host;
4693
4694 adapter->host->irq = irq;
4695
4696 if (flag & BOARD_MEMMAP)
4697 adapter->host->base = tbase;
4698 else {
4699 adapter->host->io_port = tbase;
4700 adapter->host->n_io_port = 16;
4701 }
4702
4703 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4704
4705 /*
4706 * Allocate buffer to issue internal commands.
4707 */
4708 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4709 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4710 if (!adapter->mega_buffer) {
4711 printk(KERN_WARNING "megaraid: out of RAM.\n");
4712 goto out_host_put;
4713 }
4714
4715 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4716 if (!adapter->scb_list) {
4717 printk(KERN_WARNING "megaraid: out of RAM.\n");
4718 goto out_free_cmd_buffer;
4719 }
4720
4721 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4722 megaraid_isr_memmapped : megaraid_isr_iomapped,
4723 SA_SHIRQ, "megaraid", adapter)) {
4724 printk(KERN_WARNING
4725 "megaraid: Couldn't register IRQ %d!\n", irq);
4726 goto out_free_scb_list;
4727 }
4728
4729 if (mega_setup_mailbox(adapter))
4730 goto out_free_irq;
4731
4732 if (mega_query_adapter(adapter))
4733 goto out_free_mbox;
4734
4735 /*
4736 * Have checks for some buggy f/w
4737 */
4738 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4739 /*
4740 * Which firmware
4741 */
4742 if (!strcmp(adapter->fw_version, "3.00") ||
4743 !strcmp(adapter->fw_version, "3.01")) {
4744
4745 printk( KERN_WARNING
4746 "megaraid: Your card is a Dell PERC "
4747 "2/SC RAID controller with "
4748 "firmware\nmegaraid: 3.00 or 3.01. "
4749 "This driver is known to have "
4750 "corruption issues\nmegaraid: with "
4751 "those firmware versions on this "
4752 "specific card. In order\nmegaraid: "
4753 "to protect your data, please upgrade "
4754 "your firmware to version\nmegaraid: "
4755 "3.10 or later, available from the "
4756 "Dell Technical Support web\n"
4757 "megaraid: site at\nhttp://support."
4758 "dell.com/us/en/filelib/download/"
4759 "index.asp?fileid=2940\n"
4760 );
4761 }
4762 }
4763
4764 /*
4765 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4766 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4767 * support, since this firmware cannot handle 64 bit
4768 * addressing
4769 */
4770 if ((subsysvid == HP_SUBSYS_VID) &&
4771 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4772 /*
4773 * which firmware
4774 */
4775 if (!strcmp(adapter->fw_version, "H01.07") ||
4776 !strcmp(adapter->fw_version, "H01.08") ||
4777 !strcmp(adapter->fw_version, "H01.09") ) {
4778 printk(KERN_WARNING
4779 "megaraid: Firmware H.01.07, "
4780 "H.01.08, and H.01.09 on 1M/2M "
4781 "controllers\n"
4782 "megaraid: do not support 64 bit "
4783 "addressing.\nmegaraid: DISABLING "
4784 "64 bit support.\n");
4785 adapter->flag &= ~BOARD_64BIT;
4786 }
4787 }
4788
4789 if (mega_is_bios_enabled(adapter))
4790 mega_hbas[hba_count].is_bios_enabled = 1;
4791 mega_hbas[hba_count].hostdata_addr = adapter;
4792
4793 /*
4794 * Find out which channel is raid and which is scsi. This is
4795 * for ROMB support.
4796 */
4797 mega_enum_raid_scsi(adapter);
4798
4799 /*
4800 * Find out if a logical drive is set as the boot drive. If
4801 * there is one, will make that as the first logical drive.
4802 * ROMB: Do we have to boot from a physical drive. Then all
4803 * the physical drives would appear before the logical disks.
4804 * Else, all the physical drives would be exported to the mid
4805 * layer after logical drives.
4806 */
4807 mega_get_boot_drv(adapter);
4808
4809 if (adapter->boot_pdrv_enabled) {
4810 j = adapter->product_info.nchannels;
4811 for( i = 0; i < j; i++ )
4812 adapter->logdrv_chan[i] = 0;
4813 for( i = j; i < NVIRT_CHAN + j; i++ )
4814 adapter->logdrv_chan[i] = 1;
4815 } else {
4816 for (i = 0; i < NVIRT_CHAN; i++)
4817 adapter->logdrv_chan[i] = 1;
4818 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4819 adapter->logdrv_chan[i] = 0;
4820 adapter->mega_ch_class <<= NVIRT_CHAN;
4821 }
4822
4823 /*
4824 * Do we support random deletion and addition of logical
4825 * drives
4826 */
4827 adapter->read_ldidmap = 0; /* set it after first logdrv
4828 delete cmd */
4829 adapter->support_random_del = mega_support_random_del(adapter);
4830
4831 /* Initialize SCBs */
4832 if (mega_init_scb(adapter))
4833 goto out_free_mbox;
4834
4835 /*
4836 * Reset the pending commands counter
4837 */
4838 atomic_set(&adapter->pend_cmds, 0);
4839
4840 /*
4841 * Reset the adapter quiescent flag
4842 */
4843 atomic_set(&adapter->quiescent, 0);
4844
4845 hba_soft_state[hba_count] = adapter;
4846
4847 /*
4848 * Fill in the structure which needs to be passed back to the
4849 * application when it does an ioctl() for controller related
4850 * information.
4851 */
4852 i = hba_count;
4853
4854 mcontroller[i].base = mega_baseport;
4855 mcontroller[i].irq = irq;
4856 mcontroller[i].numldrv = adapter->numldrv;
4857 mcontroller[i].pcibus = pci_bus;
4858 mcontroller[i].pcidev = id->device;
4859 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4860 mcontroller[i].pciid = -1;
4861 mcontroller[i].pcivendor = id->vendor;
4862 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4863 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4864
4865
4866 /* Set the Mode of addressing to 64 bit if we can */
4867 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4868 pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
4869 adapter->has_64bit_addr = 1;
4870 } else {
4871 pci_set_dma_mask(pdev, 0xffffffff);
4872 adapter->has_64bit_addr = 0;
4873 }
4874
4875 init_MUTEX(&adapter->int_mtx);
4876 init_completion(&adapter->int_waitq);
4877
4878 adapter->this_id = DEFAULT_INITIATOR_ID;
4879 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4880
4881 #if MEGA_HAVE_CLUSTERING
4882 /*
4883 * Is cluster support enabled on this controller
4884 * Note: In a cluster the HBAs ( the initiators ) will have
4885 * different target IDs and we cannot assume it to be 7. Call
4886 * to mega_support_cluster() will get the target ids also if
4887 * the cluster support is available
4888 */
4889 adapter->has_cluster = mega_support_cluster(adapter);
4890 if (adapter->has_cluster) {
4891 printk(KERN_NOTICE
4892 "megaraid: Cluster driver, initiator id:%d\n",
4893 adapter->this_id);
4894 }
4895 #endif
4896
4897 pci_set_drvdata(pdev, host);
4898
4899 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4900
4901 error = scsi_add_host(host, &pdev->dev);
4902 if (error)
4903 goto out_free_mbox;
4904
4905 scsi_scan_host(host);
4906 hba_count++;
4907 return 0;
4908
4909 out_free_mbox:
4910 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4911 adapter->una_mbox64, adapter->una_mbox64_dma);
4912 out_free_irq:
4913 free_irq(adapter->host->irq, adapter);
4914 out_free_scb_list:
4915 kfree(adapter->scb_list);
4916 out_free_cmd_buffer:
4917 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4918 adapter->mega_buffer, adapter->buf_dma_handle);
4919 out_host_put:
4920 scsi_host_put(host);
4921 out_iounmap:
4922 if (flag & BOARD_MEMMAP)
4923 iounmap((void *)mega_baseport);
4924 out_release_region:
4925 if (flag & BOARD_MEMMAP)
4926 release_mem_region(tbase, 128);
4927 else
4928 release_region(mega_baseport, 16);
4929 out_disable_device:
4930 pci_disable_device(pdev);
4931 out:
4932 return error;
4933 }
4934
4935 static void
4936 __megaraid_shutdown(adapter_t *adapter)
4937 {
4938 u_char raw_mbox[sizeof(struct mbox_out)];
4939 mbox_t *mbox = (mbox_t *)raw_mbox;
4940 int i;
4941
4942 /* Flush adapter cache */
4943 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4944 raw_mbox[0] = FLUSH_ADAPTER;
4945
4946 free_irq(adapter->host->irq, adapter);
4947
4948 /* Issue a blocking (interrupts disabled) command to the card */
4949 issue_scb_block(adapter, raw_mbox);
4950
4951 /* Flush disks cache */
4952 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4953 raw_mbox[0] = FLUSH_SYSTEM;
4954
4955 /* Issue a blocking (interrupts disabled) command to the card */
4956 issue_scb_block(adapter, raw_mbox);
4957
4958 if (atomic_read(&adapter->pend_cmds) > 0)
4959 printk(KERN_WARNING "megaraid: pending commands!!\n");
4960
4961 /*
4962 * Have a delibrate delay to make sure all the caches are
4963 * actually flushed.
4964 */
4965 for (i = 0; i <= 10; i++)
4966 mdelay(1000);
4967 }
4968
4969 static void
4970 megaraid_remove_one(struct pci_dev *pdev)
4971 {
4972 struct Scsi_Host *host = pci_get_drvdata(pdev);
4973 adapter_t *adapter = (adapter_t *)host->hostdata;
4974 char buf[12] = { 0 };
4975
4976 scsi_remove_host(host);
4977
4978 __megaraid_shutdown(adapter);
4979
4980 /* Free our resources */
4981 if (adapter->flag & BOARD_MEMMAP) {
4982 iounmap((void *)adapter->base);
4983 release_mem_region(adapter->host->base, 128);
4984 } else
4985 release_region(adapter->base, 16);
4986
4987 mega_free_sgl(adapter);
4988
4989 #ifdef CONFIG_PROC_FS
4990 if (adapter->controller_proc_dir_entry) {
4991 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4992 remove_proc_entry("config",
4993 adapter->controller_proc_dir_entry);
4994 remove_proc_entry("mailbox",
4995 adapter->controller_proc_dir_entry);
4996 #if MEGA_HAVE_ENH_PROC
4997 remove_proc_entry("rebuild-rate",
4998 adapter->controller_proc_dir_entry);
4999 remove_proc_entry("battery-status",
5000 adapter->controller_proc_dir_entry);
5001
5002 remove_proc_entry("diskdrives-ch0",
5003 adapter->controller_proc_dir_entry);
5004 remove_proc_entry("diskdrives-ch1",
5005 adapter->controller_proc_dir_entry);
5006 remove_proc_entry("diskdrives-ch2",
5007 adapter->controller_proc_dir_entry);
5008 remove_proc_entry("diskdrives-ch3",
5009 adapter->controller_proc_dir_entry);
5010
5011 remove_proc_entry("raiddrives-0-9",
5012 adapter->controller_proc_dir_entry);
5013 remove_proc_entry("raiddrives-10-19",
5014 adapter->controller_proc_dir_entry);
5015 remove_proc_entry("raiddrives-20-29",
5016 adapter->controller_proc_dir_entry);
5017 remove_proc_entry("raiddrives-30-39",
5018 adapter->controller_proc_dir_entry);
5019 #endif
5020 sprintf(buf, "hba%d", adapter->host->host_no);
5021 remove_proc_entry(buf, mega_proc_dir_entry);
5022 }
5023 #endif
5024
5025 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5026 adapter->mega_buffer, adapter->buf_dma_handle);
5027 kfree(adapter->scb_list);
5028 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5029 adapter->una_mbox64, adapter->una_mbox64_dma);
5030
5031 scsi_host_put(host);
5032 pci_disable_device(pdev);
5033
5034 hba_count--;
5035 }
5036
5037 static void
5038 megaraid_shutdown(struct pci_dev *pdev)
5039 {
5040 struct Scsi_Host *host = pci_get_drvdata(pdev);
5041 adapter_t *adapter = (adapter_t *)host->hostdata;
5042
5043 __megaraid_shutdown(adapter);
5044 }
5045
5046 static struct pci_device_id megaraid_pci_tbl[] = {
5047 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
5048 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5049 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
5050 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5051 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
5052 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5053 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5054 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5055 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5056 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5057 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
5058 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5059 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5060 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5061 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3,
5062 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5063 {0,}
5064 };
5065 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5066
5067 static struct pci_driver megaraid_pci_driver = {
5068 .name = "megaraid",
5069 .id_table = megaraid_pci_tbl,
5070 .probe = megaraid_probe_one,
5071 .remove = __devexit_p(megaraid_remove_one),
5072 .shutdown = megaraid_shutdown,
5073 };
5074
5075 static int __init megaraid_init(void)
5076 {
5077 int error;
5078
5079 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5080 max_cmd_per_lun = MAX_CMD_PER_LUN;
5081 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5082 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5083
5084 #ifdef CONFIG_PROC_FS
5085 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5086 if (!mega_proc_dir_entry) {
5087 printk(KERN_WARNING
5088 "megaraid: failed to create megaraid root\n");
5089 }
5090 #endif
5091 error = pci_module_init(&megaraid_pci_driver);
5092 if (error) {
5093 #ifdef CONFIG_PROC_FS
5094 remove_proc_entry("megaraid", &proc_root);
5095 #endif
5096 return error;
5097 }
5098
5099 /*
5100 * Register the driver as a character device, for applications
5101 * to access it for ioctls.
5102 * First argument (major) to register_chrdev implies a dynamic
5103 * major number allocation.
5104 */
5105 major = register_chrdev(0, "megadev", &megadev_fops);
5106 if (!major) {
5107 printk(KERN_WARNING
5108 "megaraid: failed to register char device\n");
5109 }
5110
5111 return 0;
5112 }
5113
5114 static void __exit megaraid_exit(void)
5115 {
5116 /*
5117 * Unregister the character device interface to the driver.
5118 */
5119 unregister_chrdev(major, "megadev");
5120
5121 pci_unregister_driver(&megaraid_pci_driver);
5122
5123 #ifdef CONFIG_PROC_FS
5124 remove_proc_entry("megaraid", &proc_root);
5125 #endif
5126 }
5127
5128 module_init(megaraid_init);
5129 module_exit(megaraid_exit);
5130
5131 /* vi: set ts=8 sw=8 tw=78: */
SocketAccessConTroL development