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[IPV4]: When possible test for IFF_LOOPBACK and not dev == loopback_dev
[linux-2.6/libata-dev.git] / drivers / scsi / megaraid.c
blobda56163c30a8f6404b02c16743595561a7b2a692
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 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 : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34 #include <linux/mm.h>
35 #include <linux/fs.h>
36 #include <linux/blkdev.h>
37 #include <asm/uaccess.h>
38 #include <asm/io.h>
39 #include <linux/completion.h>
40 #include <linux/delay.h>
41 #include <linux/proc_fs.h>
42 #include <linux/reboot.h>
43 #include <linux/module.h>
44 #include <linux/list.h>
45 #include <linux/interrupt.h>
46 #include <linux/pci.h>
47 #include <linux/init.h>
48 #include <linux/dma-mapping.h>
49 #include <scsi/scsicam.h>
50
51 #include "scsi.h"
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid.h"
55
56 #define MEGARAID_MODULE_VERSION "2.00.4"
57
58 MODULE_AUTHOR ("sju@lsil.com");
59 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
60 MODULE_LICENSE ("GPL");
61 MODULE_VERSION(MEGARAID_MODULE_VERSION);
62
63 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
64 module_param(max_cmd_per_lun, uint, 0);
65 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)");
66
67 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
68 module_param(max_sectors_per_io, ushort, 0);
69 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70
71
72 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
73 module_param(max_mbox_busy_wait, ushort, 0);
74 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
75
76 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
77 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
78 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
79 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
80
81 /*
82 * Global variables
83 */
84
85 static int hba_count;
86 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
87 static struct proc_dir_entry *mega_proc_dir_entry;
88
89 /* For controller re-ordering */
90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92 /*
93 * The File Operations structure for the serial/ioctl interface of the driver
94 */
95 static const struct file_operations megadev_fops = {
96 .owner = THIS_MODULE,
97 .ioctl = megadev_ioctl,
98 .open = megadev_open,
99 };
100
101 /*
102 * Array to structures for storing the information about the controllers. This
103 * information is sent to the user level applications, when they do an ioctl
104 * for this information.
105 */
106 static struct mcontroller mcontroller[MAX_CONTROLLERS];
107
108 /* The current driver version */
109 static u32 driver_ver = 0x02000000;
110
111 /* major number used by the device for character interface */
112 static int major;
113
114 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115
116
117 /*
118 * Debug variable to print some diagnostic messages
119 */
120 static int trace_level;
121
122 /**
123 * mega_setup_mailbox()
124 * @adapter - pointer to our soft state
125 *
126 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 */
128 static int
129 mega_setup_mailbox(adapter_t *adapter)
130 {
131 unsigned long align;
132
133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
134 sizeof(mbox64_t), &adapter->una_mbox64_dma);
135
136 if( !adapter->una_mbox64 ) return -1;
137
138 adapter->mbox = &adapter->una_mbox64->mbox;
139
140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
141 (~0UL ^ 0xFUL));
142
143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
144
145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
146
147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
148
149 /*
150 * Register the mailbox if the controller is an io-mapped controller
151 */
152 if( adapter->flag & BOARD_IOMAP ) {
153
154 outb_p(adapter->mbox_dma & 0xFF,
155 adapter->host->io_port + MBOX_PORT0);
156
157 outb_p((adapter->mbox_dma >> 8) & 0xFF,
158 adapter->host->io_port + MBOX_PORT1);
159
160 outb_p((adapter->mbox_dma >> 16) & 0xFF,
161 adapter->host->io_port + MBOX_PORT2);
162
163 outb_p((adapter->mbox_dma >> 24) & 0xFF,
164 adapter->host->io_port + MBOX_PORT3);
165
166 outb_p(ENABLE_MBOX_BYTE,
167 adapter->host->io_port + ENABLE_MBOX_REGION);
168
169 irq_ack(adapter);
170
171 irq_enable(adapter);
172 }
173
174 return 0;
175 }
176
177
178 /*
179 * mega_query_adapter()
180 * @adapter - pointer to our soft state
181 *
182 * Issue the adapter inquiry commands to the controller and find out
183 * information and parameter about the devices attached
184 */
185 static int
186 mega_query_adapter(adapter_t *adapter)
187 {
188 dma_addr_t prod_info_dma_handle;
189 mega_inquiry3 *inquiry3;
190 u8 raw_mbox[sizeof(struct mbox_out)];
191 mbox_t *mbox;
192 int retval;
193
194 /* Initialize adapter inquiry mailbox */
195
196 mbox = (mbox_t *)raw_mbox;
197
198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
199 memset(&mbox->m_out, 0, sizeof(raw_mbox));
200
201 /*
202 * Try to issue Inquiry3 command
203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
204 * update enquiry3 structure
205 */
206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
207
208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
209
210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
213
214 /* Issue a blocking command to the card */
215 if ((retval = issue_scb_block(adapter, raw_mbox))) {
216 /* the adapter does not support 40ld */
217
218 mraid_ext_inquiry *ext_inq;
219 mraid_inquiry *inq;
220 dma_addr_t dma_handle;
221
222 ext_inq = pci_alloc_consistent(adapter->dev,
223 sizeof(mraid_ext_inquiry), &dma_handle);
224
225 if( ext_inq == NULL ) return -1;
226
227 inq = &ext_inq->raid_inq;
228
229 mbox->m_out.xferaddr = (u32)dma_handle;
230
231 /*issue old 0x04 command to adapter */
232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
233
234 issue_scb_block(adapter, raw_mbox);
235
236 /*
237 * update Enquiry3 and ProductInfo structures with
238 * mraid_inquiry structure
239 */
240 mega_8_to_40ld(inq, inquiry3,
241 (mega_product_info *)&adapter->product_info);
242
243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
244 ext_inq, dma_handle);
245
246 } else { /*adapter supports 40ld */
247 adapter->flag |= BOARD_40LD;
248
249 /*
250 * get product_info, which is static information and will be
251 * unchanged
252 */
253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
254 &adapter->product_info,
255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
256
257 mbox->m_out.xferaddr = prod_info_dma_handle;
258
259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
261
262 if ((retval = issue_scb_block(adapter, raw_mbox)))
263 printk(KERN_WARNING
264 "megaraid: Product_info cmd failed with error: %d\n",
265 retval);
266
267 pci_unmap_single(adapter->dev, prod_info_dma_handle,
268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
269 }
270
271
272 /*
273 * kernel scans the channels from 0 to <= max_channel
274 */
275 adapter->host->max_channel =
276 adapter->product_info.nchannels + NVIRT_CHAN -1;
277
278 adapter->host->max_id = 16; /* max targets per channel */
279
280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
281
282 adapter->host->cmd_per_lun = max_cmd_per_lun;
283
284 adapter->numldrv = inquiry3->num_ldrv;
285
286 adapter->max_cmds = adapter->product_info.max_commands;
287
288 if(adapter->max_cmds > MAX_COMMANDS)
289 adapter->max_cmds = MAX_COMMANDS;
290
291 adapter->host->can_queue = adapter->max_cmds - 1;
292
293 /*
294 * Get the maximum number of scatter-gather elements supported by this
295 * firmware
296 */
297 mega_get_max_sgl(adapter);
298
299 adapter->host->sg_tablesize = adapter->sglen;
300
301
302 /* use HP firmware and bios version encoding */
303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
304 sprintf (adapter->fw_version, "%c%d%d.%d%d",
305 adapter->product_info.fw_version[2],
306 adapter->product_info.fw_version[1] >> 8,
307 adapter->product_info.fw_version[1] & 0x0f,
308 adapter->product_info.fw_version[0] >> 8,
309 adapter->product_info.fw_version[0] & 0x0f);
310 sprintf (adapter->bios_version, "%c%d%d.%d%d",
311 adapter->product_info.bios_version[2],
312 adapter->product_info.bios_version[1] >> 8,
313 adapter->product_info.bios_version[1] & 0x0f,
314 adapter->product_info.bios_version[0] >> 8,
315 adapter->product_info.bios_version[0] & 0x0f);
316 } else {
317 memcpy(adapter->fw_version,
318 (char *)adapter->product_info.fw_version, 4);
319 adapter->fw_version[4] = 0;
320
321 memcpy(adapter->bios_version,
322 (char *)adapter->product_info.bios_version, 4);
323
324 adapter->bios_version[4] = 0;
325 }
326
327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
328 adapter->fw_version, adapter->bios_version, adapter->numldrv);
329
330 /*
331 * Do we support extended (>10 bytes) cdbs
332 */
333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
334 if (adapter->support_ext_cdb)
335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
336
337
338 return 0;
339 }
340
341 /**
342 * mega_runpendq()
343 * @adapter - pointer to our soft state
344 *
345 * Runs through the list of pending requests.
346 */
347 static inline void
348 mega_runpendq(adapter_t *adapter)
349 {
350 if(!list_empty(&adapter->pending_list))
351 __mega_runpendq(adapter);
352 }
353
354 /*
355 * megaraid_queue()
356 * @scmd - Issue this scsi command
357 * @done - the callback hook into the scsi mid-layer
358 *
359 * The command queuing entry point for the mid-layer.
360 */
361 static int
362 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
363 {
364 adapter_t *adapter;
365 scb_t *scb;
366 int busy=0;
367 unsigned long flags;
368
369 adapter = (adapter_t *)scmd->device->host->hostdata;
370
371 scmd->scsi_done = done;
372
373
374 /*
375 * Allocate and build a SCB request
376 * busy flag will be set if mega_build_cmd() command could not
377 * allocate scb. We will return non-zero status in that case.
378 * NOTE: scb can be null even though certain commands completed
379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
380 * return 0 in that case.
381 */
382
383 spin_lock_irqsave(&adapter->lock, flags);
384 scb = mega_build_cmd(adapter, scmd, &busy);
385 if (!scb)
386 goto out;
387
388 scb->state |= SCB_PENDQ;
389 list_add_tail(&scb->list, &adapter->pending_list);
390
391 /*
392 * Check if the HBA is in quiescent state, e.g., during a
393 * delete logical drive opertion. If it is, don't run
394 * the pending_list.
395 */
396 if (atomic_read(&adapter->quiescent) == 0)
397 mega_runpendq(adapter);
398
399 busy = 0;
400 out:
401 spin_unlock_irqrestore(&adapter->lock, flags);
402 return busy;
403 }
404
405 /**
406 * mega_allocate_scb()
407 * @adapter - pointer to our soft state
408 * @cmd - scsi command from the mid-layer
409 *
410 * Allocate a SCB structure. This is the central structure for controller
411 * commands.
412 */
413 static inline scb_t *
414 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
415 {
416 struct list_head *head = &adapter->free_list;
417 scb_t *scb;
418
419 /* Unlink command from Free List */
420 if( !list_empty(head) ) {
421
422 scb = list_entry(head->next, scb_t, list);
423
424 list_del_init(head->next);
425
426 scb->state = SCB_ACTIVE;
427 scb->cmd = cmd;
428 scb->dma_type = MEGA_DMA_TYPE_NONE;
429
430 return scb;
431 }
432
433 return NULL;
434 }
435
436 /**
437 * mega_get_ldrv_num()
438 * @adapter - pointer to our soft state
439 * @cmd - scsi mid layer command
440 * @channel - channel on the controller
441 *
442 * Calculate the logical drive number based on the information in scsi command
443 * and the channel number.
444 */
445 static inline int
446 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
447 {
448 int tgt;
449 int ldrv_num;
450
451 tgt = cmd->device->id;
452
453 if ( tgt > adapter->this_id )
454 tgt--; /* we do not get inquires for initiator id */
455
456 ldrv_num = (channel * 15) + tgt;
457
458
459 /*
460 * If we have a logical drive with boot enabled, project it first
461 */
462 if( adapter->boot_ldrv_enabled ) {
463 if( ldrv_num == 0 ) {
464 ldrv_num = adapter->boot_ldrv;
465 }
466 else {
467 if( ldrv_num <= adapter->boot_ldrv ) {
468 ldrv_num--;
469 }
470 }
471 }
472
473 /*
474 * If "delete logical drive" feature is enabled on this controller.
475 * Do only if at least one delete logical drive operation was done.
476 *
477 * Also, after logical drive deletion, instead of logical drive number,
478 * the value returned should be 0x80+logical drive id.
479 *
480 * These is valid only for IO commands.
481 */
482
483 if (adapter->support_random_del && adapter->read_ldidmap )
484 switch (cmd->cmnd[0]) {
485 case READ_6: /* fall through */
486 case WRITE_6: /* fall through */
487 case READ_10: /* fall through */
488 case WRITE_10:
489 ldrv_num += 0x80;
490 }
491
492 return ldrv_num;
493 }
494
495 /**
496 * mega_build_cmd()
497 * @adapter - pointer to our soft state
498 * @cmd - Prepare using this scsi command
499 * @busy - busy flag if no resources
500 *
501 * Prepares a command and scatter gather list for the controller. This routine
502 * also finds out if the commands is intended for a logical drive or a
503 * physical device and prepares the controller command accordingly.
504 *
505 * We also re-order the logical drives and physical devices based on their
506 * boot settings.
507 */
508 static scb_t *
509 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
510 {
511 mega_ext_passthru *epthru;
512 mega_passthru *pthru;
513 scb_t *scb;
514 mbox_t *mbox;
515 long seg;
516 char islogical;
517 int max_ldrv_num;
518 int channel = 0;
519 int target = 0;
520 int ldrv_num = 0; /* logical drive number */
521
522
523 /*
524 * filter the internal and ioctl commands
525 */
526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
527 return (scb_t *)cmd->host_scribble;
528
529 /*
530 * We know what channels our logical drives are on - mega_find_card()
531 */
532 islogical = adapter->logdrv_chan[cmd->device->channel];
533
534 /*
535 * The theory: If physical drive is chosen for boot, all the physical
536 * devices are exported before the logical drives, otherwise physical
537 * devices are pushed after logical drives, in which case - Kernel sees
538 * the physical devices on virtual channel which is obviously converted
539 * to actual channel on the HBA.
540 */
541 if( adapter->boot_pdrv_enabled ) {
542 if( islogical ) {
543 /* logical channel */
544 channel = cmd->device->channel -
545 adapter->product_info.nchannels;
546 }
547 else {
548 /* this is physical channel */
549 channel = cmd->device->channel;
550 target = cmd->device->id;
551
552 /*
553 * boot from a physical disk, that disk needs to be
554 * exposed first IF both the channels are SCSI, then
555 * booting from the second channel is not allowed.
556 */
557 if( target == 0 ) {
558 target = adapter->boot_pdrv_tgt;
559 }
560 else if( target == adapter->boot_pdrv_tgt ) {
561 target = 0;
562 }
563 }
564 }
565 else {
566 if( islogical ) {
567 /* this is the logical channel */
568 channel = cmd->device->channel;
569 }
570 else {
571 /* physical channel */
572 channel = cmd->device->channel - NVIRT_CHAN;
573 target = cmd->device->id;
574 }
575 }
576
577
578 if(islogical) {
579
580 /* have just LUN 0 for each target on virtual channels */
581 if (cmd->device->lun) {
582 cmd->result = (DID_BAD_TARGET << 16);
583 cmd->scsi_done(cmd);
584 return NULL;
585 }
586
587 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
588
589
590 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
591 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
592
593 /*
594 * max_ldrv_num increases by 0x80 if some logical drive was
595 * deleted.
596 */
597 if(adapter->read_ldidmap)
598 max_ldrv_num += 0x80;
599
600 if(ldrv_num > max_ldrv_num ) {
601 cmd->result = (DID_BAD_TARGET << 16);
602 cmd->scsi_done(cmd);
603 return NULL;
604 }
605
606 }
607 else {
608 if( cmd->device->lun > 7) {
609 /*
610 * Do not support lun >7 for physically accessed
611 * devices
612 */
613 cmd->result = (DID_BAD_TARGET << 16);
614 cmd->scsi_done(cmd);
615 return NULL;
616 }
617 }
618
619 /*
620 *
621 * Logical drive commands
622 *
623 */
624 if(islogical) {
625 switch (cmd->cmnd[0]) {
626 case TEST_UNIT_READY:
627 #if MEGA_HAVE_CLUSTERING
628 /*
629 * Do we support clustering and is the support enabled
630 * If no, return success always
631 */
632 if( !adapter->has_cluster ) {
633 cmd->result = (DID_OK << 16);
634 cmd->scsi_done(cmd);
635 return NULL;
636 }
637
638 if(!(scb = mega_allocate_scb(adapter, cmd))) {
639 *busy = 1;
640 return NULL;
641 }
642
643 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
644 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
645 scb->raw_mbox[3] = ldrv_num;
646
647 scb->dma_direction = PCI_DMA_NONE;
648
649 return scb;
650 #else
651 cmd->result = (DID_OK << 16);
652 cmd->scsi_done(cmd);
653 return NULL;
654 #endif
655
656 case MODE_SENSE: {
657 char *buf;
658 struct scatterlist *sg;
659
660 sg = scsi_sglist(cmd);
661 buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
662
663 memset(buf, 0, cmd->cmnd[4]);
664 kunmap_atomic(buf - sg->offset, KM_IRQ0);
665
666 cmd->result = (DID_OK << 16);
667 cmd->scsi_done(cmd);
668 return NULL;
669 }
670
671 case READ_CAPACITY:
672 case INQUIRY:
673
674 if(!(adapter->flag & (1L << cmd->device->channel))) {
675
676 printk(KERN_NOTICE
677 "scsi%d: scanning scsi channel %d ",
678 adapter->host->host_no,
679 cmd->device->channel);
680 printk("for logical drives.\n");
681
682 adapter->flag |= (1L << cmd->device->channel);
683 }
684
685 /* Allocate a SCB and initialize passthru */
686 if(!(scb = mega_allocate_scb(adapter, cmd))) {
687 *busy = 1;
688 return NULL;
689 }
690 pthru = scb->pthru;
691
692 mbox = (mbox_t *)scb->raw_mbox;
693 memset(mbox, 0, sizeof(scb->raw_mbox));
694 memset(pthru, 0, sizeof(mega_passthru));
695
696 pthru->timeout = 0;
697 pthru->ars = 1;
698 pthru->reqsenselen = 14;
699 pthru->islogical = 1;
700 pthru->logdrv = ldrv_num;
701 pthru->cdblen = cmd->cmd_len;
702 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
703
704 if( adapter->has_64bit_addr ) {
705 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
706 }
707 else {
708 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
709 }
710
711 scb->dma_direction = PCI_DMA_FROMDEVICE;
712
713 pthru->numsgelements = mega_build_sglist(adapter, scb,
714 &pthru->dataxferaddr, &pthru->dataxferlen);
715
716 mbox->m_out.xferaddr = scb->pthru_dma_addr;
717
718 return scb;
719
720 case READ_6:
721 case WRITE_6:
722 case READ_10:
723 case WRITE_10:
724 case READ_12:
725 case WRITE_12:
726
727 /* Allocate a SCB and initialize mailbox */
728 if(!(scb = mega_allocate_scb(adapter, cmd))) {
729 *busy = 1;
730 return NULL;
731 }
732 mbox = (mbox_t *)scb->raw_mbox;
733
734 memset(mbox, 0, sizeof(scb->raw_mbox));
735 mbox->m_out.logdrv = ldrv_num;
736
737 /*
738 * A little hack: 2nd bit is zero for all scsi read
739 * commands and is set for all scsi write commands
740 */
741 if( adapter->has_64bit_addr ) {
742 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
743 MEGA_MBOXCMD_LWRITE64:
744 MEGA_MBOXCMD_LREAD64 ;
745 }
746 else {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE:
749 MEGA_MBOXCMD_LREAD ;
750 }
751
752 /*
753 * 6-byte READ(0x08) or WRITE(0x0A) cdb
754 */
755 if( cmd->cmd_len == 6 ) {
756 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
757 mbox->m_out.lba =
758 ((u32)cmd->cmnd[1] << 16) |
759 ((u32)cmd->cmnd[2] << 8) |
760 (u32)cmd->cmnd[3];
761
762 mbox->m_out.lba &= 0x1FFFFF;
763
764 #if MEGA_HAVE_STATS
765 /*
766 * Take modulo 0x80, since the logical drive
767 * number increases by 0x80 when a logical
768 * drive was deleted
769 */
770 if (*cmd->cmnd == READ_6) {
771 adapter->nreads[ldrv_num%0x80]++;
772 adapter->nreadblocks[ldrv_num%0x80] +=
773 mbox->m_out.numsectors;
774 } else {
775 adapter->nwrites[ldrv_num%0x80]++;
776 adapter->nwriteblocks[ldrv_num%0x80] +=
777 mbox->m_out.numsectors;
778 }
779 #endif
780 }
781
782 /*
783 * 10-byte READ(0x28) or WRITE(0x2A) cdb
784 */
785 if( cmd->cmd_len == 10 ) {
786 mbox->m_out.numsectors =
787 (u32)cmd->cmnd[8] |
788 ((u32)cmd->cmnd[7] << 8);
789 mbox->m_out.lba =
790 ((u32)cmd->cmnd[2] << 24) |
791 ((u32)cmd->cmnd[3] << 16) |
792 ((u32)cmd->cmnd[4] << 8) |
793 (u32)cmd->cmnd[5];
794
795 #if MEGA_HAVE_STATS
796 if (*cmd->cmnd == READ_10) {
797 adapter->nreads[ldrv_num%0x80]++;
798 adapter->nreadblocks[ldrv_num%0x80] +=
799 mbox->m_out.numsectors;
800 } else {
801 adapter->nwrites[ldrv_num%0x80]++;
802 adapter->nwriteblocks[ldrv_num%0x80] +=
803 mbox->m_out.numsectors;
804 }
805 #endif
806 }
807
808 /*
809 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
810 */
811 if( cmd->cmd_len == 12 ) {
812 mbox->m_out.lba =
813 ((u32)cmd->cmnd[2] << 24) |
814 ((u32)cmd->cmnd[3] << 16) |
815 ((u32)cmd->cmnd[4] << 8) |
816 (u32)cmd->cmnd[5];
817
818 mbox->m_out.numsectors =
819 ((u32)cmd->cmnd[6] << 24) |
820 ((u32)cmd->cmnd[7] << 16) |
821 ((u32)cmd->cmnd[8] << 8) |
822 (u32)cmd->cmnd[9];
823
824 #if MEGA_HAVE_STATS
825 if (*cmd->cmnd == READ_12) {
826 adapter->nreads[ldrv_num%0x80]++;
827 adapter->nreadblocks[ldrv_num%0x80] +=
828 mbox->m_out.numsectors;
829 } else {
830 adapter->nwrites[ldrv_num%0x80]++;
831 adapter->nwriteblocks[ldrv_num%0x80] +=
832 mbox->m_out.numsectors;
833 }
834 #endif
835 }
836
837 /*
838 * If it is a read command
839 */
840 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
841 scb->dma_direction = PCI_DMA_FROMDEVICE;
842 }
843 else {
844 scb->dma_direction = PCI_DMA_TODEVICE;
845 }
846
847 /* Calculate Scatter-Gather info */
848 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
849 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
850
851 return scb;
852
853 #if MEGA_HAVE_CLUSTERING
854 case RESERVE: /* Fall through */
855 case RELEASE:
856
857 /*
858 * Do we support clustering and is the support enabled
859 */
860 if( ! adapter->has_cluster ) {
861
862 cmd->result = (DID_BAD_TARGET << 16);
863 cmd->scsi_done(cmd);
864 return NULL;
865 }
866
867 /* Allocate a SCB and initialize mailbox */
868 if(!(scb = mega_allocate_scb(adapter, cmd))) {
869 *busy = 1;
870 return NULL;
871 }
872
873 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
874 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
875 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
876
877 scb->raw_mbox[3] = ldrv_num;
878
879 scb->dma_direction = PCI_DMA_NONE;
880
881 return scb;
882 #endif
883
884 default:
885 cmd->result = (DID_BAD_TARGET << 16);
886 cmd->scsi_done(cmd);
887 return NULL;
888 }
889 }
890
891 /*
892 * Passthru drive commands
893 */
894 else {
895 /* Allocate a SCB and initialize passthru */
896 if(!(scb = mega_allocate_scb(adapter, cmd))) {
897 *busy = 1;
898 return NULL;
899 }
900
901 mbox = (mbox_t *)scb->raw_mbox;
902 memset(mbox, 0, sizeof(scb->raw_mbox));
903
904 if( adapter->support_ext_cdb ) {
905
906 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
907 channel, target);
908
909 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
910
911 mbox->m_out.xferaddr = scb->epthru_dma_addr;
912
913 }
914 else {
915
916 pthru = mega_prepare_passthru(adapter, scb, cmd,
917 channel, target);
918
919 /* Initialize mailbox */
920 if( adapter->has_64bit_addr ) {
921 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
922 }
923 else {
924 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
925 }
926
927 mbox->m_out.xferaddr = scb->pthru_dma_addr;
928
929 }
930 return scb;
931 }
932 return NULL;
933 }
934
935
936 /**
937 * mega_prepare_passthru()
938 * @adapter - pointer to our soft state
939 * @scb - our scsi control block
940 * @cmd - scsi command from the mid-layer
941 * @channel - actual channel on the controller
942 * @target - actual id on the controller.
943 *
944 * prepare a command for the scsi physical devices.
945 */
946 static mega_passthru *
947 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
948 int channel, int target)
949 {
950 mega_passthru *pthru;
951
952 pthru = scb->pthru;
953 memset(pthru, 0, sizeof (mega_passthru));
954
955 /* 0=6sec/1=60sec/2=10min/3=3hrs */
956 pthru->timeout = 2;
957
958 pthru->ars = 1;
959 pthru->reqsenselen = 14;
960 pthru->islogical = 0;
961
962 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
963
964 pthru->target = (adapter->flag & BOARD_40LD) ?
965 (channel << 4) | target : target;
966
967 pthru->cdblen = cmd->cmd_len;
968 pthru->logdrv = cmd->device->lun;
969
970 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
971
972 /* Not sure about the direction */
973 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
974
975 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
976 switch (cmd->cmnd[0]) {
977 case INQUIRY:
978 case READ_CAPACITY:
979 if(!(adapter->flag & (1L << cmd->device->channel))) {
980
981 printk(KERN_NOTICE
982 "scsi%d: scanning scsi channel %d [P%d] ",
983 adapter->host->host_no,
984 cmd->device->channel, channel);
985 printk("for physical devices.\n");
986
987 adapter->flag |= (1L << cmd->device->channel);
988 }
989 /* Fall through */
990 default:
991 pthru->numsgelements = mega_build_sglist(adapter, scb,
992 &pthru->dataxferaddr, &pthru->dataxferlen);
993 break;
994 }
995 return pthru;
996 }
997
998
999 /**
1000 * mega_prepare_extpassthru()
1001 * @adapter - pointer to our soft state
1002 * @scb - our scsi control block
1003 * @cmd - scsi command from the mid-layer
1004 * @channel - actual channel on the controller
1005 * @target - actual id on the controller.
1006 *
1007 * prepare a command for the scsi physical devices. This rountine prepares
1008 * commands for devices which can take extended CDBs (>10 bytes)
1009 */
1010 static mega_ext_passthru *
1011 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1012 int channel, int target)
1013 {
1014 mega_ext_passthru *epthru;
1015
1016 epthru = scb->epthru;
1017 memset(epthru, 0, sizeof(mega_ext_passthru));
1018
1019 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1020 epthru->timeout = 2;
1021
1022 epthru->ars = 1;
1023 epthru->reqsenselen = 14;
1024 epthru->islogical = 0;
1025
1026 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1027 epthru->target = (adapter->flag & BOARD_40LD) ?
1028 (channel << 4) | target : target;
1029
1030 epthru->cdblen = cmd->cmd_len;
1031 epthru->logdrv = cmd->device->lun;
1032
1033 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1034
1035 /* Not sure about the direction */
1036 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1037
1038 switch(cmd->cmnd[0]) {
1039 case INQUIRY:
1040 case READ_CAPACITY:
1041 if(!(adapter->flag & (1L << cmd->device->channel))) {
1042
1043 printk(KERN_NOTICE
1044 "scsi%d: scanning scsi channel %d [P%d] ",
1045 adapter->host->host_no,
1046 cmd->device->channel, channel);
1047 printk("for physical devices.\n");
1048
1049 adapter->flag |= (1L << cmd->device->channel);
1050 }
1051 /* Fall through */
1052 default:
1053 epthru->numsgelements = mega_build_sglist(adapter, scb,
1054 &epthru->dataxferaddr, &epthru->dataxferlen);
1055 break;
1056 }
1057
1058 return epthru;
1059 }
1060
1061 static void
1062 __mega_runpendq(adapter_t *adapter)
1063 {
1064 scb_t *scb;
1065 struct list_head *pos, *next;
1066
1067 /* Issue any pending commands to the card */
1068 list_for_each_safe(pos, next, &adapter->pending_list) {
1069
1070 scb = list_entry(pos, scb_t, list);
1071
1072 if( !(scb->state & SCB_ISSUED) ) {
1073
1074 if( issue_scb(adapter, scb) != 0 )
1075 return;
1076 }
1077 }
1078
1079 return;
1080 }
1081
1082
1083 /**
1084 * issue_scb()
1085 * @adapter - pointer to our soft state
1086 * @scb - scsi control block
1087 *
1088 * Post a command to the card if the mailbox is available, otherwise return
1089 * busy. We also take the scb from the pending list if the mailbox is
1090 * available.
1091 */
1092 static int
1093 issue_scb(adapter_t *adapter, scb_t *scb)
1094 {
1095 volatile mbox64_t *mbox64 = adapter->mbox64;
1096 volatile mbox_t *mbox = adapter->mbox;
1097 unsigned int i = 0;
1098
1099 if(unlikely(mbox->m_in.busy)) {
1100 do {
1101 udelay(1);
1102 i++;
1103 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1104
1105 if(mbox->m_in.busy) return -1;
1106 }
1107
1108 /* Copy mailbox data into host structure */
1109 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1110 sizeof(struct mbox_out));
1111
1112 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1113 mbox->m_in.busy = 1; /* Set busy */
1114
1115
1116 /*
1117 * Increment the pending queue counter
1118 */
1119 atomic_inc(&adapter->pend_cmds);
1120
1121 switch (mbox->m_out.cmd) {
1122 case MEGA_MBOXCMD_LREAD64:
1123 case MEGA_MBOXCMD_LWRITE64:
1124 case MEGA_MBOXCMD_PASSTHRU64:
1125 case MEGA_MBOXCMD_EXTPTHRU:
1126 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1127 mbox64->xfer_segment_hi = 0;
1128 mbox->m_out.xferaddr = 0xFFFFFFFF;
1129 break;
1130 default:
1131 mbox64->xfer_segment_lo = 0;
1132 mbox64->xfer_segment_hi = 0;
1133 }
1134
1135 /*
1136 * post the command
1137 */
1138 scb->state |= SCB_ISSUED;
1139
1140 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1141 mbox->m_in.poll = 0;
1142 mbox->m_in.ack = 0;
1143 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1144 }
1145 else {
1146 irq_enable(adapter);
1147 issue_command(adapter);
1148 }
1149
1150 return 0;
1151 }
1152
1153 /*
1154 * Wait until the controller's mailbox is available
1155 */
1156 static inline int
1157 mega_busywait_mbox (adapter_t *adapter)
1158 {
1159 if (adapter->mbox->m_in.busy)
1160 return __mega_busywait_mbox(adapter);
1161 return 0;
1162 }
1163
1164 /**
1165 * issue_scb_block()
1166 * @adapter - pointer to our soft state
1167 * @raw_mbox - the mailbox
1168 *
1169 * Issue a scb in synchronous and non-interrupt mode
1170 */
1171 static int
1172 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1173 {
1174 volatile mbox64_t *mbox64 = adapter->mbox64;
1175 volatile mbox_t *mbox = adapter->mbox;
1176 u8 byte;
1177
1178 /* Wait until mailbox is free */
1179 if(mega_busywait_mbox (adapter))
1180 goto bug_blocked_mailbox;
1181
1182 /* Copy mailbox data into host structure */
1183 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1184 mbox->m_out.cmdid = 0xFE;
1185 mbox->m_in.busy = 1;
1186
1187 switch (raw_mbox[0]) {
1188 case MEGA_MBOXCMD_LREAD64:
1189 case MEGA_MBOXCMD_LWRITE64:
1190 case MEGA_MBOXCMD_PASSTHRU64:
1191 case MEGA_MBOXCMD_EXTPTHRU:
1192 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1193 mbox64->xfer_segment_hi = 0;
1194 mbox->m_out.xferaddr = 0xFFFFFFFF;
1195 break;
1196 default:
1197 mbox64->xfer_segment_lo = 0;
1198 mbox64->xfer_segment_hi = 0;
1199 }
1200
1201 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1202 mbox->m_in.poll = 0;
1203 mbox->m_in.ack = 0;
1204 mbox->m_in.numstatus = 0xFF;
1205 mbox->m_in.status = 0xFF;
1206 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1207
1208 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1209 cpu_relax();
1210
1211 mbox->m_in.numstatus = 0xFF;
1212
1213 while( (volatile u8)mbox->m_in.poll != 0x77 )
1214 cpu_relax();
1215
1216 mbox->m_in.poll = 0;
1217 mbox->m_in.ack = 0x77;
1218
1219 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1220
1221 while(RDINDOOR(adapter) & 0x2)
1222 cpu_relax();
1223 }
1224 else {
1225 irq_disable(adapter);
1226 issue_command(adapter);
1227
1228 while (!((byte = irq_state(adapter)) & INTR_VALID))
1229 cpu_relax();
1230
1231 set_irq_state(adapter, byte);
1232 irq_enable(adapter);
1233 irq_ack(adapter);
1234 }
1235
1236 return mbox->m_in.status;
1237
1238 bug_blocked_mailbox:
1239 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1240 udelay (1000);
1241 return -1;
1242 }
1243
1244
1245 /**
1246 * megaraid_isr_iomapped()
1247 * @irq - irq
1248 * @devp - pointer to our soft state
1249 *
1250 * Interrupt service routine for io-mapped controllers.
1251 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1252 * and service the completed commands.
1253 */
1254 static irqreturn_t
1255 megaraid_isr_iomapped(int irq, void *devp)
1256 {
1257 adapter_t *adapter = devp;
1258 unsigned long flags;
1259 u8 status;
1260 u8 nstatus;
1261 u8 completed[MAX_FIRMWARE_STATUS];
1262 u8 byte;
1263 int handled = 0;
1264
1265
1266 /*
1267 * loop till F/W has more commands for us to complete.
1268 */
1269 spin_lock_irqsave(&adapter->lock, flags);
1270
1271 do {
1272 /* Check if a valid interrupt is pending */
1273 byte = irq_state(adapter);
1274 if( (byte & VALID_INTR_BYTE) == 0 ) {
1275 /*
1276 * No more pending commands
1277 */
1278 goto out_unlock;
1279 }
1280 set_irq_state(adapter, byte);
1281
1282 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1283 == 0xFF)
1284 cpu_relax();
1285 adapter->mbox->m_in.numstatus = 0xFF;
1286
1287 status = adapter->mbox->m_in.status;
1288
1289 /*
1290 * decrement the pending queue counter
1291 */
1292 atomic_sub(nstatus, &adapter->pend_cmds);
1293
1294 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1295 nstatus);
1296
1297 /* Acknowledge interrupt */
1298 irq_ack(adapter);
1299
1300 mega_cmd_done(adapter, completed, nstatus, status);
1301
1302 mega_rundoneq(adapter);
1303
1304 handled = 1;
1305
1306 /* Loop through any pending requests */
1307 if(atomic_read(&adapter->quiescent) == 0) {
1308 mega_runpendq(adapter);
1309 }
1310
1311 } while(1);
1312
1313 out_unlock:
1314
1315 spin_unlock_irqrestore(&adapter->lock, flags);
1316
1317 return IRQ_RETVAL(handled);
1318 }
1319
1320
1321 /**
1322 * megaraid_isr_memmapped()
1323 * @irq - irq
1324 * @devp - pointer to our soft state
1325 *
1326 * Interrupt service routine for memory-mapped controllers.
1327 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1328 * and service the completed commands.
1329 */
1330 static irqreturn_t
1331 megaraid_isr_memmapped(int irq, void *devp)
1332 {
1333 adapter_t *adapter = devp;
1334 unsigned long flags;
1335 u8 status;
1336 u32 dword = 0;
1337 u8 nstatus;
1338 u8 completed[MAX_FIRMWARE_STATUS];
1339 int handled = 0;
1340
1341
1342 /*
1343 * loop till F/W has more commands for us to complete.
1344 */
1345 spin_lock_irqsave(&adapter->lock, flags);
1346
1347 do {
1348 /* Check if a valid interrupt is pending */
1349 dword = RDOUTDOOR(adapter);
1350 if(dword != 0x10001234) {
1351 /*
1352 * No more pending commands
1353 */
1354 goto out_unlock;
1355 }
1356 WROUTDOOR(adapter, 0x10001234);
1357
1358 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1359 == 0xFF) {
1360 cpu_relax();
1361 }
1362 adapter->mbox->m_in.numstatus = 0xFF;
1363
1364 status = adapter->mbox->m_in.status;
1365
1366 /*
1367 * decrement the pending queue counter
1368 */
1369 atomic_sub(nstatus, &adapter->pend_cmds);
1370
1371 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1372 nstatus);
1373
1374 /* Acknowledge interrupt */
1375 WRINDOOR(adapter, 0x2);
1376
1377 handled = 1;
1378
1379 while( RDINDOOR(adapter) & 0x02 )
1380 cpu_relax();
1381
1382 mega_cmd_done(adapter, completed, nstatus, status);
1383
1384 mega_rundoneq(adapter);
1385
1386 /* Loop through any pending requests */
1387 if(atomic_read(&adapter->quiescent) == 0) {
1388 mega_runpendq(adapter);
1389 }
1390
1391 } while(1);
1392
1393 out_unlock:
1394
1395 spin_unlock_irqrestore(&adapter->lock, flags);
1396
1397 return IRQ_RETVAL(handled);
1398 }
1399 /**
1400 * mega_cmd_done()
1401 * @adapter - pointer to our soft state
1402 * @completed - array of ids of completed commands
1403 * @nstatus - number of completed commands
1404 * @status - status of the last command completed
1405 *
1406 * Complete the comamnds and call the scsi mid-layer callback hooks.
1407 */
1408 static void
1409 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1410 {
1411 mega_ext_passthru *epthru = NULL;
1412 struct scatterlist *sgl;
1413 Scsi_Cmnd *cmd = NULL;
1414 mega_passthru *pthru = NULL;
1415 mbox_t *mbox = NULL;
1416 u8 c;
1417 scb_t *scb;
1418 int islogical;
1419 int cmdid;
1420 int i;
1421
1422 /*
1423 * for all the commands completed, call the mid-layer callback routine
1424 * and free the scb.
1425 */
1426 for( i = 0; i < nstatus; i++ ) {
1427
1428 cmdid = completed[i];
1429
1430 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1431 scb = &adapter->int_scb;
1432 cmd = scb->cmd;
1433 mbox = (mbox_t *)scb->raw_mbox;
1434
1435 /*
1436 * Internal command interface do not fire the extended
1437 * passthru or 64-bit passthru
1438 */
1439 pthru = scb->pthru;
1440
1441 }
1442 else {
1443 scb = &adapter->scb_list[cmdid];
1444
1445 /*
1446 * Make sure f/w has completed a valid command
1447 */
1448 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1449 printk(KERN_CRIT
1450 "megaraid: invalid command ");
1451 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1452 cmdid, scb->state, scb->cmd);
1453
1454 continue;
1455 }
1456
1457 /*
1458 * Was a abort issued for this command
1459 */
1460 if( scb->state & SCB_ABORT ) {
1461
1462 printk(KERN_WARNING
1463 "megaraid: aborted cmd %lx[%x] complete.\n",
1464 scb->cmd->serial_number, scb->idx);
1465
1466 scb->cmd->result = (DID_ABORT << 16);
1467
1468 list_add_tail(SCSI_LIST(scb->cmd),
1469 &adapter->completed_list);
1470
1471 mega_free_scb(adapter, scb);
1472
1473 continue;
1474 }
1475
1476 /*
1477 * Was a reset issued for this command
1478 */
1479 if( scb->state & SCB_RESET ) {
1480
1481 printk(KERN_WARNING
1482 "megaraid: reset cmd %lx[%x] complete.\n",
1483 scb->cmd->serial_number, scb->idx);
1484
1485 scb->cmd->result = (DID_RESET << 16);
1486
1487 list_add_tail(SCSI_LIST(scb->cmd),
1488 &adapter->completed_list);
1489
1490 mega_free_scb (adapter, scb);
1491
1492 continue;
1493 }
1494
1495 cmd = scb->cmd;
1496 pthru = scb->pthru;
1497 epthru = scb->epthru;
1498 mbox = (mbox_t *)scb->raw_mbox;
1499
1500 #if MEGA_HAVE_STATS
1501 {
1502
1503 int logdrv = mbox->m_out.logdrv;
1504
1505 islogical = adapter->logdrv_chan[cmd->channel];
1506 /*
1507 * Maintain an error counter for the logical drive.
1508 * Some application like SNMP agent need such
1509 * statistics
1510 */
1511 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1512 cmd->cmnd[0] == READ_10 ||
1513 cmd->cmnd[0] == READ_12)) {
1514 /*
1515 * Logical drive number increases by 0x80 when
1516 * a logical drive is deleted
1517 */
1518 adapter->rd_errors[logdrv%0x80]++;
1519 }
1520
1521 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1522 cmd->cmnd[0] == WRITE_10 ||
1523 cmd->cmnd[0] == WRITE_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->wr_errors[logdrv%0x80]++;
1529 }
1530
1531 }
1532 #endif
1533 }
1534
1535 /*
1536 * Do not return the presence of hard disk on the channel so,
1537 * inquiry sent, and returned data==hard disk or removable
1538 * hard disk and not logical, request should return failure! -
1539 * PJ
1540 */
1541 islogical = adapter->logdrv_chan[cmd->device->channel];
1542 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1543
1544 sgl = scsi_sglist(cmd);
1545 if( sgl->page ) {
1546 c = *(unsigned char *)
1547 page_address((&sgl[0])->page) +
1548 (&sgl[0])->offset;
1549 } else {
1550 printk(KERN_WARNING
1551 "megaraid: invalid sg.\n");
1552 c = 0;
1553 }
1554
1555 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1556 ((c & 0x1F ) == TYPE_DISK)) {
1557 status = 0xF0;
1558 }
1559 }
1560
1561 /* clear result; otherwise, success returns corrupt value */
1562 cmd->result = 0;
1563
1564 /* Convert MegaRAID status to Linux error code */
1565 switch (status) {
1566 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1567 cmd->result |= (DID_OK << 16);
1568 break;
1569
1570 case 0x02: /* ERROR_ABORTED, i.e.
1571 SCSI_STATUS_CHECK_CONDITION */
1572
1573 /* set sense_buffer and result fields */
1574 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1575 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1576
1577 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1578 14);
1579
1580 cmd->result = (DRIVER_SENSE << 24) |
1581 (DID_OK << 16) |
1582 (CHECK_CONDITION << 1);
1583 }
1584 else {
1585 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1586
1587 memcpy(cmd->sense_buffer,
1588 epthru->reqsensearea, 14);
1589
1590 cmd->result = (DRIVER_SENSE << 24) |
1591 (DID_OK << 16) |
1592 (CHECK_CONDITION << 1);
1593 } else {
1594 cmd->sense_buffer[0] = 0x70;
1595 cmd->sense_buffer[2] = ABORTED_COMMAND;
1596 cmd->result |= (CHECK_CONDITION << 1);
1597 }
1598 }
1599 break;
1600
1601 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1602 SCSI_STATUS_BUSY */
1603 cmd->result |= (DID_BUS_BUSY << 16) | status;
1604 break;
1605
1606 default:
1607 #if MEGA_HAVE_CLUSTERING
1608 /*
1609 * If TEST_UNIT_READY fails, we know
1610 * MEGA_RESERVATION_STATUS failed
1611 */
1612 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1613 cmd->result |= (DID_ERROR << 16) |
1614 (RESERVATION_CONFLICT << 1);
1615 }
1616 else
1617 /*
1618 * Error code returned is 1 if Reserve or Release
1619 * failed or the input parameter is invalid
1620 */
1621 if( status == 1 &&
1622 (cmd->cmnd[0] == RESERVE ||
1623 cmd->cmnd[0] == RELEASE) ) {
1624
1625 cmd->result |= (DID_ERROR << 16) |
1626 (RESERVATION_CONFLICT << 1);
1627 }
1628 else
1629 #endif
1630 cmd->result |= (DID_BAD_TARGET << 16)|status;
1631 }
1632
1633 /*
1634 * Only free SCBs for the commands coming down from the
1635 * mid-layer, not for which were issued internally
1636 *
1637 * For internal command, restore the status returned by the
1638 * firmware so that user can interpret it.
1639 */
1640 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1641 cmd->result = status;
1642
1643 /*
1644 * Remove the internal command from the pending list
1645 */
1646 list_del_init(&scb->list);
1647 scb->state = SCB_FREE;
1648 }
1649 else {
1650 mega_free_scb(adapter, scb);
1651 }
1652
1653 /* Add Scsi_Command to end of completed queue */
1654 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1655 }
1656 }
1657
1658
1659 /*
1660 * mega_runpendq()
1661 *
1662 * Run through the list of completed requests and finish it
1663 */
1664 static void
1665 mega_rundoneq (adapter_t *adapter)
1666 {
1667 Scsi_Cmnd *cmd;
1668 struct list_head *pos;
1669
1670 list_for_each(pos, &adapter->completed_list) {
1671
1672 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1673
1674 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1675 cmd->scsi_done(cmd);
1676 }
1677
1678 INIT_LIST_HEAD(&adapter->completed_list);
1679 }
1680
1681
1682 /*
1683 * Free a SCB structure
1684 * Note: We assume the scsi commands associated with this scb is not free yet.
1685 */
1686 static void
1687 mega_free_scb(adapter_t *adapter, scb_t *scb)
1688 {
1689 switch( scb->dma_type ) {
1690
1691 case MEGA_DMA_TYPE_NONE:
1692 break;
1693
1694 case MEGA_SGLIST:
1695 scsi_dma_unmap(scb->cmd);
1696 break;
1697 default:
1698 break;
1699 }
1700
1701 /*
1702 * Remove from the pending list
1703 */
1704 list_del_init(&scb->list);
1705
1706 /* Link the scb back into free list */
1707 scb->state = SCB_FREE;
1708 scb->cmd = NULL;
1709
1710 list_add(&scb->list, &adapter->free_list);
1711 }
1712
1713
1714 static int
1715 __mega_busywait_mbox (adapter_t *adapter)
1716 {
1717 volatile mbox_t *mbox = adapter->mbox;
1718 long counter;
1719
1720 for (counter = 0; counter < 10000; counter++) {
1721 if (!mbox->m_in.busy)
1722 return 0;
1723 udelay(100);
1724 cond_resched();
1725 }
1726 return -1; /* give up after 1 second */
1727 }
1728
1729 /*
1730 * Copies data to SGLIST
1731 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1732 */
1733 static int
1734 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1735 {
1736 struct scatterlist *sg;
1737 Scsi_Cmnd *cmd;
1738 int sgcnt;
1739 int idx;
1740
1741 cmd = scb->cmd;
1742
1743 /*
1744 * Copy Scatter-Gather list info into controller structure.
1745 *
1746 * The number of sg elements returned must not exceed our limit
1747 */
1748 sgcnt = scsi_dma_map(cmd);
1749
1750 scb->dma_type = MEGA_SGLIST;
1751
1752 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1753
1754 *len = 0;
1755
1756 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1757 sg = scsi_sglist(cmd);
1758 scb->dma_h_bulkdata = sg_dma_address(sg);
1759 *buf = (u32)scb->dma_h_bulkdata;
1760 *len = sg_dma_len(sg);
1761 return 0;
1762 }
1763
1764 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1765 if (adapter->has_64bit_addr) {
1766 scb->sgl64[idx].address = sg_dma_address(sg);
1767 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1768 } else {
1769 scb->sgl[idx].address = sg_dma_address(sg);
1770 *len += scb->sgl[idx].length = sg_dma_len(sg);
1771 }
1772 }
1773
1774 /* Reset pointer and length fields */
1775 *buf = scb->sgl_dma_addr;
1776
1777 /* Return count of SG requests */
1778 return sgcnt;
1779 }
1780
1781
1782 /*
1783 * mega_8_to_40ld()
1784 *
1785 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1786 * Enquiry3 structures for later use
1787 */
1788 static void
1789 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1790 mega_product_info *product_info)
1791 {
1792 int i;
1793
1794 product_info->max_commands = inquiry->adapter_info.max_commands;
1795 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1796 product_info->nchannels = inquiry->adapter_info.nchannels;
1797
1798 for (i = 0; i < 4; i++) {
1799 product_info->fw_version[i] =
1800 inquiry->adapter_info.fw_version[i];
1801
1802 product_info->bios_version[i] =
1803 inquiry->adapter_info.bios_version[i];
1804 }
1805 enquiry3->cache_flush_interval =
1806 inquiry->adapter_info.cache_flush_interval;
1807
1808 product_info->dram_size = inquiry->adapter_info.dram_size;
1809
1810 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1811
1812 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1813 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1814 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1815 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1816 }
1817
1818 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1819 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1820 }
1821
1822 static inline void
1823 mega_free_sgl(adapter_t *adapter)
1824 {
1825 scb_t *scb;
1826 int i;
1827
1828 for(i = 0; i < adapter->max_cmds; i++) {
1829
1830 scb = &adapter->scb_list[i];
1831
1832 if( scb->sgl64 ) {
1833 pci_free_consistent(adapter->dev,
1834 sizeof(mega_sgl64) * adapter->sglen,
1835 scb->sgl64,
1836 scb->sgl_dma_addr);
1837
1838 scb->sgl64 = NULL;
1839 }
1840
1841 if( scb->pthru ) {
1842 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1843 scb->pthru, scb->pthru_dma_addr);
1844
1845 scb->pthru = NULL;
1846 }
1847
1848 if( scb->epthru ) {
1849 pci_free_consistent(adapter->dev,
1850 sizeof(mega_ext_passthru),
1851 scb->epthru, scb->epthru_dma_addr);
1852
1853 scb->epthru = NULL;
1854 }
1855
1856 }
1857 }
1858
1859
1860 /*
1861 * Get information about the card/driver
1862 */
1863 const char *
1864 megaraid_info(struct Scsi_Host *host)
1865 {
1866 static char buffer[512];
1867 adapter_t *adapter;
1868
1869 adapter = (adapter_t *)host->hostdata;
1870
1871 sprintf (buffer,
1872 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1873 adapter->fw_version, adapter->product_info.max_commands,
1874 adapter->host->max_id, adapter->host->max_channel,
1875 adapter->host->max_lun);
1876 return buffer;
1877 }
1878
1879 /*
1880 * Abort a previous SCSI request. Only commands on the pending list can be
1881 * aborted. All the commands issued to the F/W must complete.
1882 */
1883 static int
1884 megaraid_abort(Scsi_Cmnd *cmd)
1885 {
1886 adapter_t *adapter;
1887 int rval;
1888
1889 adapter = (adapter_t *)cmd->device->host->hostdata;
1890
1891 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1892
1893 /*
1894 * This is required here to complete any completed requests
1895 * to be communicated over to the mid layer.
1896 */
1897 mega_rundoneq(adapter);
1898
1899 return rval;
1900 }
1901
1902
1903 static int
1904 megaraid_reset(struct scsi_cmnd *cmd)
1905 {
1906 adapter_t *adapter;
1907 megacmd_t mc;
1908 int rval;
1909
1910 adapter = (adapter_t *)cmd->device->host->hostdata;
1911
1912 #if MEGA_HAVE_CLUSTERING
1913 mc.cmd = MEGA_CLUSTER_CMD;
1914 mc.opcode = MEGA_RESET_RESERVATIONS;
1915
1916 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1917 printk(KERN_WARNING
1918 "megaraid: reservation reset failed.\n");
1919 }
1920 else {
1921 printk(KERN_INFO "megaraid: reservation reset.\n");
1922 }
1923 #endif
1924
1925 spin_lock_irq(&adapter->lock);
1926
1927 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1928
1929 /*
1930 * This is required here to complete any completed requests
1931 * to be communicated over to the mid layer.
1932 */
1933 mega_rundoneq(adapter);
1934 spin_unlock_irq(&adapter->lock);
1935
1936 return rval;
1937 }
1938
1939 /**
1940 * megaraid_abort_and_reset()
1941 * @adapter - megaraid soft state
1942 * @cmd - scsi command to be aborted or reset
1943 * @aor - abort or reset flag
1944 *
1945 * Try to locate the scsi command in the pending queue. If found and is not
1946 * issued to the controller, abort/reset it. Otherwise return failure
1947 */
1948 static int
1949 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1950 {
1951 struct list_head *pos, *next;
1952 scb_t *scb;
1953
1954 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1955 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1956 cmd->cmnd[0], cmd->device->channel,
1957 cmd->device->id, cmd->device->lun);
1958
1959 if(list_empty(&adapter->pending_list))
1960 return FALSE;
1961
1962 list_for_each_safe(pos, next, &adapter->pending_list) {
1963
1964 scb = list_entry(pos, scb_t, list);
1965
1966 if (scb->cmd == cmd) { /* Found command */
1967
1968 scb->state |= aor;
1969
1970 /*
1971 * Check if this command has firmare owenership. If
1972 * yes, we cannot reset this command. Whenever, f/w
1973 * completes this command, we will return appropriate
1974 * status from ISR.
1975 */
1976 if( scb->state & SCB_ISSUED ) {
1977
1978 printk(KERN_WARNING
1979 "megaraid: %s-%lx[%x], fw owner.\n",
1980 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1981 cmd->serial_number, scb->idx);
1982
1983 return FALSE;
1984 }
1985 else {
1986
1987 /*
1988 * Not yet issued! Remove from the pending
1989 * list
1990 */
1991 printk(KERN_WARNING
1992 "megaraid: %s-%lx[%x], driver owner.\n",
1993 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1994 cmd->serial_number, scb->idx);
1995
1996 mega_free_scb(adapter, scb);
1997
1998 if( aor == SCB_ABORT ) {
1999 cmd->result = (DID_ABORT << 16);
2000 }
2001 else {
2002 cmd->result = (DID_RESET << 16);
2003 }
2004
2005 list_add_tail(SCSI_LIST(cmd),
2006 &adapter->completed_list);
2007
2008 return TRUE;
2009 }
2010 }
2011 }
2012
2013 return FALSE;
2014 }
2015
2016 static inline int
2017 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2018 {
2019 *pdev = alloc_pci_dev();
2020
2021 if( *pdev == NULL ) return -1;
2022
2023 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2024
2025 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2026 kfree(*pdev);
2027 return -1;
2028 }
2029
2030 return 0;
2031 }
2032
2033 static inline void
2034 free_local_pdev(struct pci_dev *pdev)
2035 {
2036 kfree(pdev);
2037 }
2038
2039 /**
2040 * mega_allocate_inquiry()
2041 * @dma_handle - handle returned for dma address
2042 * @pdev - handle to pci device
2043 *
2044 * allocates memory for inquiry structure
2045 */
2046 static inline void *
2047 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2048 {
2049 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2050 }
2051
2052
2053 static inline void
2054 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2055 {
2056 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2057 }
2058
2059
2060 #ifdef CONFIG_PROC_FS
2061 /* Following code handles /proc fs */
2062
2063 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2064 S_IRUSR | S_IFREG, \
2065 controller_proc_dir_entry, \
2066 func, adapter)
2067
2068 /**
2069 * mega_create_proc_entry()
2070 * @index - index in soft state array
2071 * @parent - parent node for this /proc entry
2072 *
2073 * Creates /proc entries for our controllers.
2074 */
2075 static void
2076 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2077 {
2078 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2079 u8 string[64] = { 0 };
2080 adapter_t *adapter = hba_soft_state[index];
2081
2082 sprintf(string, "hba%d", adapter->host->host_no);
2083
2084 controller_proc_dir_entry =
2085 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2086
2087 if(!controller_proc_dir_entry) {
2088 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2089 return;
2090 }
2091 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2092 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2093 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2094 #if MEGA_HAVE_ENH_PROC
2095 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2096 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2097 proc_battery);
2098
2099 /*
2100 * Display each physical drive on its channel
2101 */
2102 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2103 proc_pdrv_ch0);
2104 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2105 proc_pdrv_ch1);
2106 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2107 proc_pdrv_ch2);
2108 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2109 proc_pdrv_ch3);
2110
2111 /*
2112 * Display a set of up to 10 logical drive through each of following
2113 * /proc entries
2114 */
2115 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2116 proc_rdrv_10);
2117 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2118 proc_rdrv_20);
2119 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2120 proc_rdrv_30);
2121 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2122 proc_rdrv_40);
2123 #endif
2124 }
2125
2126
2127 /**
2128 * proc_read_config()
2129 * @page - buffer to write the data in
2130 * @start - where the actual data has been written in page
2131 * @offset - same meaning as the read system call
2132 * @count - same meaning as the read system call
2133 * @eof - set if no more data needs to be returned
2134 * @data - pointer to our soft state
2135 *
2136 * Display configuration information about the controller.
2137 */
2138 static int
2139 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2140 void *data)
2141 {
2142
2143 adapter_t *adapter = (adapter_t *)data;
2144 int len = 0;
2145
2146 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2147
2148 if(adapter->product_info.product_name[0])
2149 len += sprintf(page+len, "%s\n",
2150 adapter->product_info.product_name);
2151
2152 len += sprintf(page+len, "Controller Type: ");
2153
2154 if( adapter->flag & BOARD_MEMMAP ) {
2155 len += sprintf(page+len,
2156 "438/466/467/471/493/518/520/531/532\n");
2157 }
2158 else {
2159 len += sprintf(page+len,
2160 "418/428/434\n");
2161 }
2162
2163 if(adapter->flag & BOARD_40LD) {
2164 len += sprintf(page+len,
2165 "Controller Supports 40 Logical Drives\n");
2166 }
2167
2168 if(adapter->flag & BOARD_64BIT) {
2169 len += sprintf(page+len,
2170 "Controller capable of 64-bit memory addressing\n");
2171 }
2172 if( adapter->has_64bit_addr ) {
2173 len += sprintf(page+len,
2174 "Controller using 64-bit memory addressing\n");
2175 }
2176 else {
2177 len += sprintf(page+len,
2178 "Controller is not using 64-bit memory addressing\n");
2179 }
2180
2181 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2182 adapter->host->irq);
2183
2184 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2185 adapter->numldrv, adapter->product_info.nchannels);
2186
2187 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2188 adapter->fw_version, adapter->bios_version,
2189 adapter->product_info.dram_size);
2190
2191 len += sprintf(page+len,
2192 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2193 adapter->product_info.max_commands, adapter->max_cmds);
2194
2195 len += sprintf(page+len, "support_ext_cdb = %d\n",
2196 adapter->support_ext_cdb);
2197 len += sprintf(page+len, "support_random_del = %d\n",
2198 adapter->support_random_del);
2199 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2200 adapter->boot_ldrv_enabled);
2201 len += sprintf(page+len, "boot_ldrv = %d\n",
2202 adapter->boot_ldrv);
2203 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2204 adapter->boot_pdrv_enabled);
2205 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2206 adapter->boot_pdrv_ch);
2207 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2208 adapter->boot_pdrv_tgt);
2209 len += sprintf(page+len, "quiescent = %d\n",
2210 atomic_read(&adapter->quiescent));
2211 len += sprintf(page+len, "has_cluster = %d\n",
2212 adapter->has_cluster);
2213
2214 len += sprintf(page+len, "\nModule Parameters:\n");
2215 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2216 max_cmd_per_lun);
2217 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2218 max_sectors_per_io);
2219
2220 *eof = 1;
2221
2222 return len;
2223 }
2224
2225
2226
2227 /**
2228 * proc_read_stat()
2229 * @page - buffer to write the data in
2230 * @start - where the actual data has been written in page
2231 * @offset - same meaning as the read system call
2232 * @count - same meaning as the read system call
2233 * @eof - set if no more data needs to be returned
2234 * @data - pointer to our soft state
2235 *
2236 * Diaplay statistical information about the I/O activity.
2237 */
2238 static int
2239 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2240 void *data)
2241 {
2242 adapter_t *adapter;
2243 int len;
2244 int i;
2245
2246 i = 0; /* avoid compilation warnings */
2247 len = 0;
2248 adapter = (adapter_t *)data;
2249
2250 len = sprintf(page, "Statistical Information for this controller\n");
2251 len += sprintf(page+len, "pend_cmds = %d\n",
2252 atomic_read(&adapter->pend_cmds));
2253 #if MEGA_HAVE_STATS
2254 for(i = 0; i < adapter->numldrv; i++) {
2255 len += sprintf(page+len, "Logical Drive %d:\n", i);
2256
2257 len += sprintf(page+len,
2258 "\tReads Issued = %lu, Writes Issued = %lu\n",
2259 adapter->nreads[i], adapter->nwrites[i]);
2260
2261 len += sprintf(page+len,
2262 "\tSectors Read = %lu, Sectors Written = %lu\n",
2263 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2264
2265 len += sprintf(page+len,
2266 "\tRead errors = %lu, Write errors = %lu\n\n",
2267 adapter->rd_errors[i], adapter->wr_errors[i]);
2268 }
2269 #else
2270 len += sprintf(page+len,
2271 "IO and error counters not compiled in driver.\n");
2272 #endif
2273
2274 *eof = 1;
2275
2276 return len;
2277 }
2278
2279
2280 /**
2281 * proc_read_mbox()
2282 * @page - buffer to write the data in
2283 * @start - where the actual data has been written in page
2284 * @offset - same meaning as the read system call
2285 * @count - same meaning as the read system call
2286 * @eof - set if no more data needs to be returned
2287 * @data - pointer to our soft state
2288 *
2289 * Display mailbox information for the last command issued. This information
2290 * is good for debugging.
2291 */
2292 static int
2293 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2294 void *data)
2295 {
2296
2297 adapter_t *adapter = (adapter_t *)data;
2298 volatile mbox_t *mbox = adapter->mbox;
2299 int len = 0;
2300
2301 len = sprintf(page, "Contents of Mail Box Structure\n");
2302 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2303 mbox->m_out.cmd);
2304 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2305 mbox->m_out.cmdid);
2306 len += sprintf(page+len, " No of Sectors= %04d\n",
2307 mbox->m_out.numsectors);
2308 len += sprintf(page+len, " LBA = 0x%02x\n",
2309 mbox->m_out.lba);
2310 len += sprintf(page+len, " DTA = 0x%08x\n",
2311 mbox->m_out.xferaddr);
2312 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2313 mbox->m_out.logdrv);
2314 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2315 mbox->m_out.numsgelements);
2316 len += sprintf(page+len, " Busy = %01x\n",
2317 mbox->m_in.busy);
2318 len += sprintf(page+len, " Status = 0x%02x\n",
2319 mbox->m_in.status);
2320
2321 *eof = 1;
2322
2323 return len;
2324 }
2325
2326
2327 /**
2328 * proc_rebuild_rate()
2329 * @page - buffer to write the data in
2330 * @start - where the actual data has been written in page
2331 * @offset - same meaning as the read system call
2332 * @count - same meaning as the read system call
2333 * @eof - set if no more data needs to be returned
2334 * @data - pointer to our soft state
2335 *
2336 * Display current rebuild rate
2337 */
2338 static int
2339 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2340 void *data)
2341 {
2342 adapter_t *adapter = (adapter_t *)data;
2343 dma_addr_t dma_handle;
2344 caddr_t inquiry;
2345 struct pci_dev *pdev;
2346 int len = 0;
2347
2348 if( make_local_pdev(adapter, &pdev) != 0 ) {
2349 *eof = 1;
2350 return len;
2351 }
2352
2353 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2354 free_local_pdev(pdev);
2355 *eof = 1;
2356 return len;
2357 }
2358
2359 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2360
2361 len = sprintf(page, "Adapter inquiry failed.\n");
2362
2363 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2364
2365 mega_free_inquiry(inquiry, dma_handle, pdev);
2366
2367 free_local_pdev(pdev);
2368
2369 *eof = 1;
2370
2371 return len;
2372 }
2373
2374 if( adapter->flag & BOARD_40LD ) {
2375 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2376 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2377 }
2378 else {
2379 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2380 ((mraid_ext_inquiry *)
2381 inquiry)->raid_inq.adapter_info.rebuild_rate);
2382 }
2383
2384
2385 mega_free_inquiry(inquiry, dma_handle, pdev);
2386
2387 free_local_pdev(pdev);
2388
2389 *eof = 1;
2390
2391 return len;
2392 }
2393
2394
2395 /**
2396 * proc_battery()
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 information about the battery module on the controller.
2405 */
2406 static int
2407 proc_battery(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 u8 battery_status = 0;
2415 char str[256];
2416 int len = 0;
2417
2418 if( make_local_pdev(adapter, &pdev) != 0 ) {
2419 *eof = 1;
2420 return len;
2421 }
2422
2423 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2424 free_local_pdev(pdev);
2425 *eof = 1;
2426 return len;
2427 }
2428
2429 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2430
2431 len = sprintf(page, "Adapter inquiry failed.\n");
2432
2433 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2434
2435 mega_free_inquiry(inquiry, dma_handle, pdev);
2436
2437 free_local_pdev(pdev);
2438
2439 *eof = 1;
2440
2441 return len;
2442 }
2443
2444 if( adapter->flag & BOARD_40LD ) {
2445 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2446 }
2447 else {
2448 battery_status = ((mraid_ext_inquiry *)inquiry)->
2449 raid_inq.adapter_info.battery_status;
2450 }
2451
2452 /*
2453 * Decode the battery status
2454 */
2455 sprintf(str, "Battery Status:[%d]", battery_status);
2456
2457 if(battery_status == MEGA_BATT_CHARGE_DONE)
2458 strcat(str, " Charge Done");
2459
2460 if(battery_status & MEGA_BATT_MODULE_MISSING)
2461 strcat(str, " Module Missing");
2462
2463 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2464 strcat(str, " Low Voltage");
2465
2466 if(battery_status & MEGA_BATT_TEMP_HIGH)
2467 strcat(str, " Temperature High");
2468
2469 if(battery_status & MEGA_BATT_PACK_MISSING)
2470 strcat(str, " Pack Missing");
2471
2472 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2473 strcat(str, " Charge In-progress");
2474
2475 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2476 strcat(str, " Charge Fail");
2477
2478 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2479 strcat(str, " Cycles Exceeded");
2480
2481 len = sprintf(page, "%s\n", str);
2482
2483
2484 mega_free_inquiry(inquiry, dma_handle, pdev);
2485
2486 free_local_pdev(pdev);
2487
2488 *eof = 1;
2489
2490 return len;
2491 }
2492
2493
2494 /**
2495 * proc_pdrv_ch0()
2496 * @page - buffer to write the data in
2497 * @start - where the actual data has been written in page
2498 * @offset - same meaning as the read system call
2499 * @count - same meaning as the read system call
2500 * @eof - set if no more data needs to be returned
2501 * @data - pointer to our soft state
2502 *
2503 * Display information about the physical drives on physical channel 0.
2504 */
2505 static int
2506 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2507 void *data)
2508 {
2509 adapter_t *adapter = (adapter_t *)data;
2510
2511 *eof = 1;
2512
2513 return (proc_pdrv(adapter, page, 0));
2514 }
2515
2516
2517 /**
2518 * proc_pdrv_ch1()
2519 * @page - buffer to write the data in
2520 * @start - where the actual data has been written in page
2521 * @offset - same meaning as the read system call
2522 * @count - same meaning as the read system call
2523 * @eof - set if no more data needs to be returned
2524 * @data - pointer to our soft state
2525 *
2526 * Display information about the physical drives on physical channel 1.
2527 */
2528 static int
2529 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2530 void *data)
2531 {
2532 adapter_t *adapter = (adapter_t *)data;
2533
2534 *eof = 1;
2535
2536 return (proc_pdrv(adapter, page, 1));
2537 }
2538
2539
2540 /**
2541 * proc_pdrv_ch2()
2542 * @page - buffer to write the data in
2543 * @start - where the actual data has been written in page
2544 * @offset - same meaning as the read system call
2545 * @count - same meaning as the read system call
2546 * @eof - set if no more data needs to be returned
2547 * @data - pointer to our soft state
2548 *
2549 * Display information about the physical drives on physical channel 2.
2550 */
2551 static int
2552 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2553 void *data)
2554 {
2555 adapter_t *adapter = (adapter_t *)data;
2556
2557 *eof = 1;
2558
2559 return (proc_pdrv(adapter, page, 2));
2560 }
2561
2562
2563 /**
2564 * proc_pdrv_ch3()
2565 * @page - buffer to write the data in
2566 * @start - where the actual data has been written in page
2567 * @offset - same meaning as the read system call
2568 * @count - same meaning as the read system call
2569 * @eof - set if no more data needs to be returned
2570 * @data - pointer to our soft state
2571 *
2572 * Display information about the physical drives on physical channel 3.
2573 */
2574 static int
2575 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2576 void *data)
2577 {
2578 adapter_t *adapter = (adapter_t *)data;
2579
2580 *eof = 1;
2581
2582 return (proc_pdrv(adapter, page, 3));
2583 }
2584
2585
2586 /**
2587 * proc_pdrv()
2588 * @page - buffer to write the data in
2589 * @adapter - pointer to our soft state
2590 *
2591 * Display information about the physical drives.
2592 */
2593 static int
2594 proc_pdrv(adapter_t *adapter, char *page, int channel)
2595 {
2596 dma_addr_t dma_handle;
2597 char *scsi_inq;
2598 dma_addr_t scsi_inq_dma_handle;
2599 caddr_t inquiry;
2600 struct pci_dev *pdev;
2601 u8 *pdrv_state;
2602 u8 state;
2603 int tgt;
2604 int max_channels;
2605 int len = 0;
2606 char str[80];
2607 int i;
2608
2609 if( make_local_pdev(adapter, &pdev) != 0 ) {
2610 return len;
2611 }
2612
2613 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2614 goto free_pdev;
2615 }
2616
2617 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2618 len = sprintf(page, "Adapter inquiry failed.\n");
2619
2620 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2621
2622 goto free_inquiry;
2623 }
2624
2625
2626 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2627
2628 if( scsi_inq == NULL ) {
2629 len = sprintf(page, "memory not available for scsi inq.\n");
2630
2631 goto free_inquiry;
2632 }
2633
2634 if( adapter->flag & BOARD_40LD ) {
2635 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2636 }
2637 else {
2638 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2639 raid_inq.pdrv_info.pdrv_state;
2640 }
2641
2642 max_channels = adapter->product_info.nchannels;
2643
2644 if( channel >= max_channels ) {
2645 goto free_pci;
2646 }
2647
2648 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2649
2650 i = channel*16 + tgt;
2651
2652 state = *(pdrv_state + i);
2653
2654 switch( state & 0x0F ) {
2655
2656 case PDRV_ONLINE:
2657 sprintf(str,
2658 "Channel:%2d Id:%2d State: Online",
2659 channel, tgt);
2660 break;
2661
2662 case PDRV_FAILED:
2663 sprintf(str,
2664 "Channel:%2d Id:%2d State: Failed",
2665 channel, tgt);
2666 break;
2667
2668 case PDRV_RBLD:
2669 sprintf(str,
2670 "Channel:%2d Id:%2d State: Rebuild",
2671 channel, tgt);
2672 break;
2673
2674 case PDRV_HOTSPARE:
2675 sprintf(str,
2676 "Channel:%2d Id:%2d State: Hot spare",
2677 channel, tgt);
2678 break;
2679
2680 default:
2681 sprintf(str,
2682 "Channel:%2d Id:%2d State: Un-configured",
2683 channel, tgt);
2684 break;
2685
2686 }
2687
2688 /*
2689 * This interface displays inquiries for disk drives
2690 * only. Inquries for logical drives and non-disk
2691 * devices are available through /proc/scsi/scsi
2692 */
2693 memset(scsi_inq, 0, 256);
2694 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2695 scsi_inq_dma_handle) ||
2696 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2697 continue;
2698 }
2699
2700 /*
2701 * Check for overflow. We print less than 240
2702 * characters for inquiry
2703 */
2704 if( (len + 240) >= PAGE_SIZE ) break;
2705
2706 len += sprintf(page+len, "%s.\n", str);
2707
2708 len += mega_print_inquiry(page+len, scsi_inq);
2709 }
2710
2711 free_pci:
2712 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2713 free_inquiry:
2714 mega_free_inquiry(inquiry, dma_handle, pdev);
2715 free_pdev:
2716 free_local_pdev(pdev);
2717
2718 return len;
2719 }
2720
2721
2722 /*
2723 * Display scsi inquiry
2724 */
2725 static int
2726 mega_print_inquiry(char *page, char *scsi_inq)
2727 {
2728 int len = 0;
2729 int i;
2730
2731 len = sprintf(page, " Vendor: ");
2732 for( i = 8; i < 16; i++ ) {
2733 len += sprintf(page+len, "%c", scsi_inq[i]);
2734 }
2735
2736 len += sprintf(page+len, " Model: ");
2737
2738 for( i = 16; i < 32; i++ ) {
2739 len += sprintf(page+len, "%c", scsi_inq[i]);
2740 }
2741
2742 len += sprintf(page+len, " Rev: ");
2743
2744 for( i = 32; i < 36; i++ ) {
2745 len += sprintf(page+len, "%c", scsi_inq[i]);
2746 }
2747
2748 len += sprintf(page+len, "\n");
2749
2750 i = scsi_inq[0] & 0x1f;
2751
2752 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2753
2754 len += sprintf(page+len,
2755 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2756
2757 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2758 len += sprintf(page+len, " CCS\n");
2759 else
2760 len += sprintf(page+len, "\n");
2761
2762 return len;
2763 }
2764
2765
2766 /**
2767 * proc_rdrv_10()
2768 * @page - buffer to write the data in
2769 * @start - where the actual data has been written in page
2770 * @offset - same meaning as the read system call
2771 * @count - same meaning as the read system call
2772 * @eof - set if no more data needs to be returned
2773 * @data - pointer to our soft state
2774 *
2775 * Display real time information about the logical drives 0 through 9.
2776 */
2777 static int
2778 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2779 void *data)
2780 {
2781 adapter_t *adapter = (adapter_t *)data;
2782
2783 *eof = 1;
2784
2785 return (proc_rdrv(adapter, page, 0, 9));
2786 }
2787
2788
2789 /**
2790 * proc_rdrv_20()
2791 * @page - buffer to write the data in
2792 * @start - where the actual data has been written in page
2793 * @offset - same meaning as the read system call
2794 * @count - same meaning as the read system call
2795 * @eof - set if no more data needs to be returned
2796 * @data - pointer to our soft state
2797 *
2798 * Display real time information about the logical drives 0 through 9.
2799 */
2800 static int
2801 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2802 void *data)
2803 {
2804 adapter_t *adapter = (adapter_t *)data;
2805
2806 *eof = 1;
2807
2808 return (proc_rdrv(adapter, page, 10, 19));
2809 }
2810
2811
2812 /**
2813 * proc_rdrv_30()
2814 * @page - buffer to write the data in
2815 * @start - where the actual data has been written in page
2816 * @offset - same meaning as the read system call
2817 * @count - same meaning as the read system call
2818 * @eof - set if no more data needs to be returned
2819 * @data - pointer to our soft state
2820 *
2821 * Display real time information about the logical drives 0 through 9.
2822 */
2823 static int
2824 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2825 void *data)
2826 {
2827 adapter_t *adapter = (adapter_t *)data;
2828
2829 *eof = 1;
2830
2831 return (proc_rdrv(adapter, page, 20, 29));
2832 }
2833
2834
2835 /**
2836 * proc_rdrv_40()
2837 * @page - buffer to write the data in
2838 * @start - where the actual data has been written in page
2839 * @offset - same meaning as the read system call
2840 * @count - same meaning as the read system call
2841 * @eof - set if no more data needs to be returned
2842 * @data - pointer to our soft state
2843 *
2844 * Display real time information about the logical drives 0 through 9.
2845 */
2846 static int
2847 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2848 void *data)
2849 {
2850 adapter_t *adapter = (adapter_t *)data;
2851
2852 *eof = 1;
2853
2854 return (proc_rdrv(adapter, page, 30, 39));
2855 }
2856
2857
2858 /**
2859 * proc_rdrv()
2860 * @page - buffer to write the data in
2861 * @adapter - pointer to our soft state
2862 * @start - starting logical drive to display
2863 * @end - ending logical drive to display
2864 *
2865 * We do not print the inquiry information since its already available through
2866 * /proc/scsi/scsi interface
2867 */
2868 static int
2869 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2870 {
2871 dma_addr_t dma_handle;
2872 logdrv_param *lparam;
2873 megacmd_t mc;
2874 char *disk_array;
2875 dma_addr_t disk_array_dma_handle;
2876 caddr_t inquiry;
2877 struct pci_dev *pdev;
2878 u8 *rdrv_state;
2879 int num_ldrv;
2880 u32 array_sz;
2881 int len = 0;
2882 int i;
2883
2884 if( make_local_pdev(adapter, &pdev) != 0 ) {
2885 return len;
2886 }
2887
2888 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2889 free_local_pdev(pdev);
2890 return len;
2891 }
2892
2893 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2894
2895 len = sprintf(page, "Adapter inquiry failed.\n");
2896
2897 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2898
2899 mega_free_inquiry(inquiry, dma_handle, pdev);
2900
2901 free_local_pdev(pdev);
2902
2903 return len;
2904 }
2905
2906 memset(&mc, 0, sizeof(megacmd_t));
2907
2908 if( adapter->flag & BOARD_40LD ) {
2909 array_sz = sizeof(disk_array_40ld);
2910
2911 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2912
2913 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2914 }
2915 else {
2916 array_sz = sizeof(disk_array_8ld);
2917
2918 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2919 raid_inq.logdrv_info.ldrv_state;
2920
2921 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2922 raid_inq.logdrv_info.num_ldrv;
2923 }
2924
2925 disk_array = pci_alloc_consistent(pdev, array_sz,
2926 &disk_array_dma_handle);
2927
2928 if( disk_array == NULL ) {
2929 len = sprintf(page, "memory not available.\n");
2930
2931 mega_free_inquiry(inquiry, dma_handle, pdev);
2932
2933 free_local_pdev(pdev);
2934
2935 return len;
2936 }
2937
2938 mc.xferaddr = (u32)disk_array_dma_handle;
2939
2940 if( adapter->flag & BOARD_40LD ) {
2941 mc.cmd = FC_NEW_CONFIG;
2942 mc.opcode = OP_DCMD_READ_CONFIG;
2943
2944 if( mega_internal_command(adapter, &mc, NULL) ) {
2945
2946 len = sprintf(page, "40LD read config failed.\n");
2947
2948 mega_free_inquiry(inquiry, dma_handle, pdev);
2949
2950 pci_free_consistent(pdev, array_sz, disk_array,
2951 disk_array_dma_handle);
2952
2953 free_local_pdev(pdev);
2954
2955 return len;
2956 }
2957
2958 }
2959 else {
2960 mc.cmd = NEW_READ_CONFIG_8LD;
2961
2962 if( mega_internal_command(adapter, &mc, NULL) ) {
2963
2964 mc.cmd = READ_CONFIG_8LD;
2965
2966 if( mega_internal_command(adapter, &mc,
2967 NULL) ){
2968
2969 len = sprintf(page,
2970 "8LD read config failed.\n");
2971
2972 mega_free_inquiry(inquiry, dma_handle, pdev);
2973
2974 pci_free_consistent(pdev, array_sz,
2975 disk_array,
2976 disk_array_dma_handle);
2977
2978 free_local_pdev(pdev);
2979
2980 return len;
2981 }
2982 }
2983 }
2984
2985 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2986
2987 if( adapter->flag & BOARD_40LD ) {
2988 lparam =
2989 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2990 }
2991 else {
2992 lparam =
2993 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2994 }
2995
2996 /*
2997 * Check for overflow. We print less than 240 characters for
2998 * information about each logical drive.
2999 */
3000 if( (len + 240) >= PAGE_SIZE ) break;
3001
3002 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3003
3004 switch( rdrv_state[i] & 0x0F ) {
3005 case RDRV_OFFLINE:
3006 len += sprintf(page+len, "state: offline");
3007 break;
3008
3009 case RDRV_DEGRADED:
3010 len += sprintf(page+len, "state: degraded");
3011 break;
3012
3013 case RDRV_OPTIMAL:
3014 len += sprintf(page+len, "state: optimal");
3015 break;
3016
3017 case RDRV_DELETED:
3018 len += sprintf(page+len, "state: deleted");
3019 break;
3020
3021 default:
3022 len += sprintf(page+len, "state: unknown");
3023 break;
3024 }
3025
3026 /*
3027 * Check if check consistency or initialization is going on
3028 * for this logical drive.
3029 */
3030 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3031 len += sprintf(page+len,
3032 ", check-consistency in progress");
3033 }
3034 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3035 len += sprintf(page+len,
3036 ", initialization in progress");
3037 }
3038
3039 len += sprintf(page+len, "\n");
3040
3041 len += sprintf(page+len, "Span depth:%3d, ",
3042 lparam->span_depth);
3043
3044 len += sprintf(page+len, "RAID level:%3d, ",
3045 lparam->level);
3046
3047 len += sprintf(page+len, "Stripe size:%3d, ",
3048 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3049
3050 len += sprintf(page+len, "Row size:%3d\n",
3051 lparam->row_size);
3052
3053
3054 len += sprintf(page+len, "Read Policy: ");
3055
3056 switch(lparam->read_ahead) {
3057
3058 case NO_READ_AHEAD:
3059 len += sprintf(page+len, "No read ahead, ");
3060 break;
3061
3062 case READ_AHEAD:
3063 len += sprintf(page+len, "Read ahead, ");
3064 break;
3065
3066 case ADAP_READ_AHEAD:
3067 len += sprintf(page+len, "Adaptive, ");
3068 break;
3069
3070 }
3071
3072 len += sprintf(page+len, "Write Policy: ");
3073
3074 switch(lparam->write_mode) {
3075
3076 case WRMODE_WRITE_THRU:
3077 len += sprintf(page+len, "Write thru, ");
3078 break;
3079
3080 case WRMODE_WRITE_BACK:
3081 len += sprintf(page+len, "Write back, ");
3082 break;
3083 }
3084
3085 len += sprintf(page+len, "Cache Policy: ");
3086
3087 switch(lparam->direct_io) {
3088
3089 case CACHED_IO:
3090 len += sprintf(page+len, "Cached IO\n\n");
3091 break;
3092
3093 case DIRECT_IO:
3094 len += sprintf(page+len, "Direct IO\n\n");
3095 break;
3096 }
3097 }
3098
3099 mega_free_inquiry(inquiry, dma_handle, pdev);
3100
3101 pci_free_consistent(pdev, array_sz, disk_array,
3102 disk_array_dma_handle);
3103
3104 free_local_pdev(pdev);
3105
3106 return len;
3107 }
3108 #else
3109 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3110 {
3111 }
3112 #endif
3113
3114
3115 /**
3116 * megaraid_biosparam()
3117 *
3118 * Return the disk geometry for a particular disk
3119 */
3120 static int
3121 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3122 sector_t capacity, int geom[])
3123 {
3124 adapter_t *adapter;
3125 unsigned char *bh;
3126 int heads;
3127 int sectors;
3128 int cylinders;
3129 int rval;
3130
3131 /* Get pointer to host config structure */
3132 adapter = (adapter_t *)sdev->host->hostdata;
3133
3134 if (IS_RAID_CH(adapter, sdev->channel)) {
3135 /* Default heads (64) & sectors (32) */
3136 heads = 64;
3137 sectors = 32;
3138 cylinders = (ulong)capacity / (heads * sectors);
3139
3140 /*
3141 * Handle extended translation size for logical drives
3142 * > 1Gb
3143 */
3144 if ((ulong)capacity >= 0x200000) {
3145 heads = 255;
3146 sectors = 63;
3147 cylinders = (ulong)capacity / (heads * sectors);
3148 }
3149
3150 /* return result */
3151 geom[0] = heads;
3152 geom[1] = sectors;
3153 geom[2] = cylinders;
3154 }
3155 else {
3156 bh = scsi_bios_ptable(bdev);
3157
3158 if( bh ) {
3159 rval = scsi_partsize(bh, capacity,
3160 &geom[2], &geom[0], &geom[1]);
3161 kfree(bh);
3162 if( rval != -1 )
3163 return rval;
3164 }
3165
3166 printk(KERN_INFO
3167 "megaraid: invalid partition on this disk on channel %d\n",
3168 sdev->channel);
3169
3170 /* Default heads (64) & sectors (32) */
3171 heads = 64;
3172 sectors = 32;
3173 cylinders = (ulong)capacity / (heads * sectors);
3174
3175 /* Handle extended translation size for logical drives > 1Gb */
3176 if ((ulong)capacity >= 0x200000) {
3177 heads = 255;
3178 sectors = 63;
3179 cylinders = (ulong)capacity / (heads * sectors);
3180 }
3181
3182 /* return result */
3183 geom[0] = heads;
3184 geom[1] = sectors;
3185 geom[2] = cylinders;
3186 }
3187
3188 return 0;
3189 }
3190
3191 /**
3192 * mega_init_scb()
3193 * @adapter - pointer to our soft state
3194 *
3195 * Allocate memory for the various pointers in the scb structures:
3196 * scatter-gather list pointer, passthru and extended passthru structure
3197 * pointers.
3198 */
3199 static int
3200 mega_init_scb(adapter_t *adapter)
3201 {
3202 scb_t *scb;
3203 int i;
3204
3205 for( i = 0; i < adapter->max_cmds; i++ ) {
3206
3207 scb = &adapter->scb_list[i];
3208
3209 scb->sgl64 = NULL;
3210 scb->sgl = NULL;
3211 scb->pthru = NULL;
3212 scb->epthru = NULL;
3213 }
3214
3215 for( i = 0; i < adapter->max_cmds; i++ ) {
3216
3217 scb = &adapter->scb_list[i];
3218
3219 scb->idx = i;
3220
3221 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3222 sizeof(mega_sgl64) * adapter->sglen,
3223 &scb->sgl_dma_addr);
3224
3225 scb->sgl = (mega_sglist *)scb->sgl64;
3226
3227 if( !scb->sgl ) {
3228 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3229 mega_free_sgl(adapter);
3230 return -1;
3231 }
3232
3233 scb->pthru = pci_alloc_consistent(adapter->dev,
3234 sizeof(mega_passthru),
3235 &scb->pthru_dma_addr);
3236
3237 if( !scb->pthru ) {
3238 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3239 mega_free_sgl(adapter);
3240 return -1;
3241 }
3242
3243 scb->epthru = pci_alloc_consistent(adapter->dev,
3244 sizeof(mega_ext_passthru),
3245 &scb->epthru_dma_addr);
3246
3247 if( !scb->epthru ) {
3248 printk(KERN_WARNING
3249 "Can't allocate extended passthru.\n");
3250 mega_free_sgl(adapter);
3251 return -1;
3252 }
3253
3254
3255 scb->dma_type = MEGA_DMA_TYPE_NONE;
3256
3257 /*
3258 * Link to free list
3259 * lock not required since we are loading the driver, so no
3260 * commands possible right now.
3261 */
3262 scb->state = SCB_FREE;
3263 scb->cmd = NULL;
3264 list_add(&scb->list, &adapter->free_list);
3265 }
3266
3267 return 0;
3268 }
3269
3270
3271 /**
3272 * megadev_open()
3273 * @inode - unused
3274 * @filep - unused
3275 *
3276 * Routines for the character/ioctl interface to the driver. Find out if this
3277 * is a valid open. If yes, increment the module use count so that it cannot
3278 * be unloaded.
3279 */
3280 static int
3281 megadev_open (struct inode *inode, struct file *filep)
3282 {
3283 /*
3284 * Only allow superuser to access private ioctl interface
3285 */
3286 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3287
3288 return 0;
3289 }
3290
3291
3292 /**
3293 * megadev_ioctl()
3294 * @inode - Our device inode
3295 * @filep - unused
3296 * @cmd - ioctl command
3297 * @arg - user buffer
3298 *
3299 * ioctl entry point for our private ioctl interface. We move the data in from
3300 * the user space, prepare the command (if necessary, convert the old MIMD
3301 * ioctl to new ioctl command), and issue a synchronous command to the
3302 * controller.
3303 */
3304 static int
3305 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3306 unsigned long arg)
3307 {
3308 adapter_t *adapter;
3309 nitioctl_t uioc;
3310 int adapno;
3311 int rval;
3312 mega_passthru __user *upthru; /* user address for passthru */
3313 mega_passthru *pthru; /* copy user passthru here */
3314 dma_addr_t pthru_dma_hndl;
3315 void *data = NULL; /* data to be transferred */
3316 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3317 megacmd_t mc;
3318 megastat_t __user *ustats;
3319 int num_ldrv;
3320 u32 uxferaddr = 0;
3321 struct pci_dev *pdev;
3322
3323 ustats = NULL; /* avoid compilation warnings */
3324 num_ldrv = 0;
3325
3326 /*
3327 * Make sure only USCSICMD are issued through this interface.
3328 * MIMD application would still fire different command.
3329 */
3330 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3331 return -EINVAL;
3332 }
3333
3334 /*
3335 * Check and convert a possible MIMD command to NIT command.
3336 * mega_m_to_n() copies the data from the user space, so we do not
3337 * have to do it here.
3338 * NOTE: We will need some user address to copyout the data, therefore
3339 * the inteface layer will also provide us with the required user
3340 * addresses.
3341 */
3342 memset(&uioc, 0, sizeof(nitioctl_t));
3343 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3344 return rval;
3345
3346
3347 switch( uioc.opcode ) {
3348
3349 case GET_DRIVER_VER:
3350 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3351 return (-EFAULT);
3352
3353 break;
3354
3355 case GET_N_ADAP:
3356 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3357 return (-EFAULT);
3358
3359 /*
3360 * Shucks. MIMD interface returns a positive value for number
3361 * of adapters. TODO: Change it to return 0 when there is no
3362 * applicatio using mimd interface.
3363 */
3364 return hba_count;
3365
3366 case GET_ADAP_INFO:
3367
3368 /*
3369 * Which adapter
3370 */
3371 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3372 return (-ENODEV);
3373
3374 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3375 sizeof(struct mcontroller)) )
3376 return (-EFAULT);
3377 break;
3378
3379 #if MEGA_HAVE_STATS
3380
3381 case GET_STATS:
3382 /*
3383 * Which adapter
3384 */
3385 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3386 return (-ENODEV);
3387
3388 adapter = hba_soft_state[adapno];
3389
3390 ustats = uioc.uioc_uaddr;
3391
3392 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3393 return (-EFAULT);
3394
3395 /*
3396 * Check for the validity of the logical drive number
3397 */
3398 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3399
3400 if( copy_to_user(ustats->nreads, adapter->nreads,
3401 num_ldrv*sizeof(u32)) )
3402 return -EFAULT;
3403
3404 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3405 num_ldrv*sizeof(u32)) )
3406 return -EFAULT;
3407
3408 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3409 num_ldrv*sizeof(u32)) )
3410 return -EFAULT;
3411
3412 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3413 num_ldrv*sizeof(u32)) )
3414 return -EFAULT;
3415
3416 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3417 num_ldrv*sizeof(u32)) )
3418 return -EFAULT;
3419
3420 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3421 num_ldrv*sizeof(u32)) )
3422 return -EFAULT;
3423
3424 return 0;
3425
3426 #endif
3427 case MBOX_CMD:
3428
3429 /*
3430 * Which adapter
3431 */
3432 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3433 return (-ENODEV);
3434
3435 adapter = hba_soft_state[adapno];
3436
3437 /*
3438 * Deletion of logical drive is a special case. The adapter
3439 * should be quiescent before this command is issued.
3440 */
3441 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3442 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3443
3444 /*
3445 * Do we support this feature
3446 */
3447 if( !adapter->support_random_del ) {
3448 printk(KERN_WARNING "megaraid: logdrv ");
3449 printk("delete on non-supporting F/W.\n");
3450
3451 return (-EINVAL);
3452 }
3453
3454 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3455
3456 if( rval == 0 ) {
3457 memset(&mc, 0, sizeof(megacmd_t));
3458
3459 mc.status = rval;
3460
3461 rval = mega_n_to_m((void __user *)arg, &mc);
3462 }
3463
3464 return rval;
3465 }
3466 /*
3467 * This interface only support the regular passthru commands.
3468 * Reject extended passthru and 64-bit passthru
3469 */
3470 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3471 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3472
3473 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3474
3475 return (-EINVAL);
3476 }
3477
3478 /*
3479 * For all internal commands, the buffer must be allocated in
3480 * <4GB address range
3481 */
3482 if( make_local_pdev(adapter, &pdev) != 0 )
3483 return -EIO;
3484
3485 /* Is it a passthru command or a DCMD */
3486 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3487 /* Passthru commands */
3488
3489 pthru = pci_alloc_consistent(pdev,
3490 sizeof(mega_passthru),
3491 &pthru_dma_hndl);
3492
3493 if( pthru == NULL ) {
3494 free_local_pdev(pdev);
3495 return (-ENOMEM);
3496 }
3497
3498 /*
3499 * The user passthru structure
3500 */
3501 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3502
3503 /*
3504 * Copy in the user passthru here.
3505 */
3506 if( copy_from_user(pthru, upthru,
3507 sizeof(mega_passthru)) ) {
3508
3509 pci_free_consistent(pdev,
3510 sizeof(mega_passthru), pthru,
3511 pthru_dma_hndl);
3512
3513 free_local_pdev(pdev);
3514
3515 return (-EFAULT);
3516 }
3517
3518 /*
3519 * Is there a data transfer
3520 */
3521 if( pthru->dataxferlen ) {
3522 data = pci_alloc_consistent(pdev,
3523 pthru->dataxferlen,
3524 &data_dma_hndl);
3525
3526 if( data == NULL ) {
3527 pci_free_consistent(pdev,
3528 sizeof(mega_passthru),
3529 pthru,
3530 pthru_dma_hndl);
3531
3532 free_local_pdev(pdev);
3533
3534 return (-ENOMEM);
3535 }
3536
3537 /*
3538 * Save the user address and point the kernel
3539 * address at just allocated memory
3540 */
3541 uxferaddr = pthru->dataxferaddr;
3542 pthru->dataxferaddr = data_dma_hndl;
3543 }
3544
3545
3546 /*
3547 * Is data coming down-stream
3548 */
3549 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3550 /*
3551 * Get the user data
3552 */
3553 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3554 pthru->dataxferlen) ) {
3555 rval = (-EFAULT);
3556 goto freemem_and_return;
3557 }
3558 }
3559
3560 memset(&mc, 0, sizeof(megacmd_t));
3561
3562 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3563 mc.xferaddr = (u32)pthru_dma_hndl;
3564
3565 /*
3566 * Issue the command
3567 */
3568 mega_internal_command(adapter, &mc, pthru);
3569
3570 rval = mega_n_to_m((void __user *)arg, &mc);
3571
3572 if( rval ) goto freemem_and_return;
3573
3574
3575 /*
3576 * Is data going up-stream
3577 */
3578 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3579 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3580 pthru->dataxferlen) ) {
3581 rval = (-EFAULT);
3582 }
3583 }
3584
3585 /*
3586 * Send the request sense data also, irrespective of
3587 * whether the user has asked for it or not.
3588 */
3589 if (copy_to_user(upthru->reqsensearea,
3590 pthru->reqsensearea, 14))
3591 rval = -EFAULT;
3592
3593 freemem_and_return:
3594 if( pthru->dataxferlen ) {
3595 pci_free_consistent(pdev,
3596 pthru->dataxferlen, data,
3597 data_dma_hndl);
3598 }
3599
3600 pci_free_consistent(pdev, sizeof(mega_passthru),
3601 pthru, pthru_dma_hndl);
3602
3603 free_local_pdev(pdev);
3604
3605 return rval;
3606 }
3607 else {
3608 /* DCMD commands */
3609
3610 /*
3611 * Is there a data transfer
3612 */
3613 if( uioc.xferlen ) {
3614 data = pci_alloc_consistent(pdev,
3615 uioc.xferlen, &data_dma_hndl);
3616
3617 if( data == NULL ) {
3618 free_local_pdev(pdev);
3619 return (-ENOMEM);
3620 }
3621
3622 uxferaddr = MBOX(uioc)->xferaddr;
3623 }
3624
3625 /*
3626 * Is data coming down-stream
3627 */
3628 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3629 /*
3630 * Get the user data
3631 */
3632 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3633 uioc.xferlen) ) {
3634
3635 pci_free_consistent(pdev,
3636 uioc.xferlen,
3637 data, data_dma_hndl);
3638
3639 free_local_pdev(pdev);
3640
3641 return (-EFAULT);
3642 }
3643 }
3644
3645 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3646
3647 mc.xferaddr = (u32)data_dma_hndl;
3648
3649 /*
3650 * Issue the command
3651 */
3652 mega_internal_command(adapter, &mc, NULL);
3653
3654 rval = mega_n_to_m((void __user *)arg, &mc);
3655
3656 if( rval ) {
3657 if( uioc.xferlen ) {
3658 pci_free_consistent(pdev,
3659 uioc.xferlen, data,
3660 data_dma_hndl);
3661 }
3662
3663 free_local_pdev(pdev);
3664
3665 return rval;
3666 }
3667
3668 /*
3669 * Is data going up-stream
3670 */
3671 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3672 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3673 uioc.xferlen) ) {
3674
3675 rval = (-EFAULT);
3676 }
3677 }
3678
3679 if( uioc.xferlen ) {
3680 pci_free_consistent(pdev,
3681 uioc.xferlen, data,
3682 data_dma_hndl);
3683 }
3684
3685 free_local_pdev(pdev);
3686
3687 return rval;
3688 }
3689
3690 default:
3691 return (-EINVAL);
3692 }
3693
3694 return 0;
3695 }
3696
3697 /**
3698 * mega_m_to_n()
3699 * @arg - user address
3700 * @uioc - new ioctl structure
3701 *
3702 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3703 * structure
3704 *
3705 * Converts the older mimd ioctl structure to newer NIT structure
3706 */
3707 static int
3708 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3709 {
3710 struct uioctl_t uioc_mimd;
3711 char signature[8] = {0};
3712 u8 opcode;
3713 u8 subopcode;
3714
3715
3716 /*
3717 * check is the application conforms to NIT. We do not have to do much
3718 * in that case.
3719 * We exploit the fact that the signature is stored in the very
3720 * begining of the structure.
3721 */
3722
3723 if( copy_from_user(signature, arg, 7) )
3724 return (-EFAULT);
3725
3726 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3727
3728 /*
3729 * NOTE NOTE: The nit ioctl is still under flux because of
3730 * change of mailbox definition, in HPE. No applications yet
3731 * use this interface and let's not have applications use this
3732 * interface till the new specifitions are in place.
3733 */
3734 return -EINVAL;
3735 #if 0
3736 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3737 return (-EFAULT);
3738 return 0;
3739 #endif
3740 }
3741
3742 /*
3743 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3744 *
3745 * Get the user ioctl structure
3746 */
3747 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3748 return (-EFAULT);
3749
3750
3751 /*
3752 * Get the opcode and subopcode for the commands
3753 */
3754 opcode = uioc_mimd.ui.fcs.opcode;
3755 subopcode = uioc_mimd.ui.fcs.subopcode;
3756
3757 switch (opcode) {
3758 case 0x82:
3759
3760 switch (subopcode) {
3761
3762 case MEGAIOC_QDRVRVER: /* Query driver version */
3763 uioc->opcode = GET_DRIVER_VER;
3764 uioc->uioc_uaddr = uioc_mimd.data;
3765 break;
3766
3767 case MEGAIOC_QNADAP: /* Get # of adapters */
3768 uioc->opcode = GET_N_ADAP;
3769 uioc->uioc_uaddr = uioc_mimd.data;
3770 break;
3771
3772 case MEGAIOC_QADAPINFO: /* Get adapter information */
3773 uioc->opcode = GET_ADAP_INFO;
3774 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3775 uioc->uioc_uaddr = uioc_mimd.data;
3776 break;
3777
3778 default:
3779 return(-EINVAL);
3780 }
3781
3782 break;
3783
3784
3785 case 0x81:
3786
3787 uioc->opcode = MBOX_CMD;
3788 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3789
3790 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3791
3792 uioc->xferlen = uioc_mimd.ui.fcs.length;
3793
3794 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3795 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3796
3797 break;
3798
3799 case 0x80:
3800
3801 uioc->opcode = MBOX_CMD;
3802 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3803
3804 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3805
3806 /*
3807 * Choose the xferlen bigger of input and output data
3808 */
3809 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3810 uioc_mimd.outlen : uioc_mimd.inlen;
3811
3812 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3813 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3814
3815 break;
3816
3817 default:
3818 return (-EINVAL);
3819
3820 }
3821
3822 return 0;
3823 }
3824
3825 /*
3826 * mega_n_to_m()
3827 * @arg - user address
3828 * @mc - mailbox command
3829 *
3830 * Updates the status information to the application, depending on application
3831 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3832 */
3833 static int
3834 mega_n_to_m(void __user *arg, megacmd_t *mc)
3835 {
3836 nitioctl_t __user *uiocp;
3837 megacmd_t __user *umc;
3838 mega_passthru __user *upthru;
3839 struct uioctl_t __user *uioc_mimd;
3840 char signature[8] = {0};
3841
3842 /*
3843 * check is the application conforms to NIT.
3844 */
3845 if( copy_from_user(signature, arg, 7) )
3846 return -EFAULT;
3847
3848 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3849
3850 uiocp = arg;
3851
3852 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3853 return (-EFAULT);
3854
3855 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3856
3857 umc = MBOX_P(uiocp);
3858
3859 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3860 return -EFAULT;
3861
3862 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3863 return (-EFAULT);
3864 }
3865 }
3866 else {
3867 uioc_mimd = arg;
3868
3869 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3870 return (-EFAULT);
3871
3872 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3873
3874 umc = (megacmd_t __user *)uioc_mimd->mbox;
3875
3876 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3877 return (-EFAULT);
3878
3879 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3880 return (-EFAULT);
3881 }
3882 }
3883
3884 return 0;
3885 }
3886
3887
3888 /*
3889 * MEGARAID 'FW' commands.
3890 */
3891
3892 /**
3893 * mega_is_bios_enabled()
3894 * @adapter - pointer to our soft state
3895 *
3896 * issue command to find out if the BIOS is enabled for this controller
3897 */
3898 static int
3899 mega_is_bios_enabled(adapter_t *adapter)
3900 {
3901 unsigned char raw_mbox[sizeof(struct mbox_out)];
3902 mbox_t *mbox;
3903 int ret;
3904
3905 mbox = (mbox_t *)raw_mbox;
3906
3907 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3908
3909 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3910
3911 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3912
3913 raw_mbox[0] = IS_BIOS_ENABLED;
3914 raw_mbox[2] = GET_BIOS;
3915
3916
3917 ret = issue_scb_block(adapter, raw_mbox);
3918
3919 return *(char *)adapter->mega_buffer;
3920 }
3921
3922
3923 /**
3924 * mega_enum_raid_scsi()
3925 * @adapter - pointer to our soft state
3926 *
3927 * Find out what channels are RAID/SCSI. This information is used to
3928 * differentiate the virtual channels and physical channels and to support
3929 * ROMB feature and non-disk devices.
3930 */
3931 static void
3932 mega_enum_raid_scsi(adapter_t *adapter)
3933 {
3934 unsigned char raw_mbox[sizeof(struct mbox_out)];
3935 mbox_t *mbox;
3936 int i;
3937
3938 mbox = (mbox_t *)raw_mbox;
3939
3940 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3941
3942 /*
3943 * issue command to find out what channels are raid/scsi
3944 */
3945 raw_mbox[0] = CHNL_CLASS;
3946 raw_mbox[2] = GET_CHNL_CLASS;
3947
3948 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3949
3950 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3951
3952 /*
3953 * Non-ROMB firmware fail this command, so all channels
3954 * must be shown RAID
3955 */
3956 adapter->mega_ch_class = 0xFF;
3957
3958 if(!issue_scb_block(adapter, raw_mbox)) {
3959 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3960
3961 }
3962
3963 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3964 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3965 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3966 i);
3967 }
3968 else {
3969 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3970 i);
3971 }
3972 }
3973
3974 return;
3975 }
3976
3977
3978 /**
3979 * mega_get_boot_drv()
3980 * @adapter - pointer to our soft state
3981 *
3982 * Find out which device is the boot device. Note, any logical drive or any
3983 * phyical device (e.g., a CDROM) can be designated as a boot device.
3984 */
3985 static void
3986 mega_get_boot_drv(adapter_t *adapter)
3987 {
3988 struct private_bios_data *prv_bios_data;
3989 unsigned char raw_mbox[sizeof(struct mbox_out)];
3990 mbox_t *mbox;
3991 u16 cksum = 0;
3992 u8 *cksum_p;
3993 u8 boot_pdrv;
3994 int i;
3995
3996 mbox = (mbox_t *)raw_mbox;
3997
3998 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3999
4000 raw_mbox[0] = BIOS_PVT_DATA;
4001 raw_mbox[2] = GET_BIOS_PVT_DATA;
4002
4003 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4004
4005 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4006
4007 adapter->boot_ldrv_enabled = 0;
4008 adapter->boot_ldrv = 0;
4009
4010 adapter->boot_pdrv_enabled = 0;
4011 adapter->boot_pdrv_ch = 0;
4012 adapter->boot_pdrv_tgt = 0;
4013
4014 if(issue_scb_block(adapter, raw_mbox) == 0) {
4015 prv_bios_data =
4016 (struct private_bios_data *)adapter->mega_buffer;
4017
4018 cksum = 0;
4019 cksum_p = (char *)prv_bios_data;
4020 for (i = 0; i < 14; i++ ) {
4021 cksum += (u16)(*cksum_p++);
4022 }
4023
4024 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4025
4026 /*
4027 * If MSB is set, a physical drive is set as boot
4028 * device
4029 */
4030 if( prv_bios_data->boot_drv & 0x80 ) {
4031 adapter->boot_pdrv_enabled = 1;
4032 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4033 adapter->boot_pdrv_ch = boot_pdrv / 16;
4034 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4035 }
4036 else {
4037 adapter->boot_ldrv_enabled = 1;
4038 adapter->boot_ldrv = prv_bios_data->boot_drv;
4039 }
4040 }
4041 }
4042
4043 }
4044
4045 /**
4046 * mega_support_random_del()
4047 * @adapter - pointer to our soft state
4048 *
4049 * Find out if this controller supports random deletion and addition of
4050 * logical drives
4051 */
4052 static int
4053 mega_support_random_del(adapter_t *adapter)
4054 {
4055 unsigned char raw_mbox[sizeof(struct mbox_out)];
4056 mbox_t *mbox;
4057 int rval;
4058
4059 mbox = (mbox_t *)raw_mbox;
4060
4061 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4062
4063 /*
4064 * issue command
4065 */
4066 raw_mbox[0] = FC_DEL_LOGDRV;
4067 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4068
4069 rval = issue_scb_block(adapter, raw_mbox);
4070
4071 return !rval;
4072 }
4073
4074
4075 /**
4076 * mega_support_ext_cdb()
4077 * @adapter - pointer to our soft state
4078 *
4079 * Find out if this firmware support cdblen > 10
4080 */
4081 static int
4082 mega_support_ext_cdb(adapter_t *adapter)
4083 {
4084 unsigned char raw_mbox[sizeof(struct mbox_out)];
4085 mbox_t *mbox;
4086 int rval;
4087
4088 mbox = (mbox_t *)raw_mbox;
4089
4090 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4091 /*
4092 * issue command to find out if controller supports extended CDBs.
4093 */
4094 raw_mbox[0] = 0xA4;
4095 raw_mbox[2] = 0x16;
4096
4097 rval = issue_scb_block(adapter, raw_mbox);
4098
4099 return !rval;
4100 }
4101
4102
4103 /**
4104 * mega_del_logdrv()
4105 * @adapter - pointer to our soft state
4106 * @logdrv - logical drive to be deleted
4107 *
4108 * Delete the specified logical drive. It is the responsibility of the user
4109 * app to let the OS know about this operation.
4110 */
4111 static int
4112 mega_del_logdrv(adapter_t *adapter, int logdrv)
4113 {
4114 unsigned long flags;
4115 scb_t *scb;
4116 int rval;
4117
4118 /*
4119 * Stop sending commands to the controller, queue them internally.
4120 * When deletion is complete, ISR will flush the queue.
4121 */
4122 atomic_set(&adapter->quiescent, 1);
4123
4124 /*
4125 * Wait till all the issued commands are complete and there are no
4126 * commands in the pending queue
4127 */
4128 while (atomic_read(&adapter->pend_cmds) > 0 ||
4129 !list_empty(&adapter->pending_list))
4130 msleep(1000); /* sleep for 1s */
4131
4132 rval = mega_do_del_logdrv(adapter, logdrv);
4133
4134 spin_lock_irqsave(&adapter->lock, flags);
4135
4136 /*
4137 * If delete operation was successful, add 0x80 to the logical drive
4138 * ids for commands in the pending queue.
4139 */
4140 if (adapter->read_ldidmap) {
4141 struct list_head *pos;
4142 list_for_each(pos, &adapter->pending_list) {
4143 scb = list_entry(pos, scb_t, list);
4144 if (scb->pthru->logdrv < 0x80 )
4145 scb->pthru->logdrv += 0x80;
4146 }
4147 }
4148
4149 atomic_set(&adapter->quiescent, 0);
4150
4151 mega_runpendq(adapter);
4152
4153 spin_unlock_irqrestore(&adapter->lock, flags);
4154
4155 return rval;
4156 }
4157
4158
4159 static int
4160 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4161 {
4162 megacmd_t mc;
4163 int rval;
4164
4165 memset( &mc, 0, sizeof(megacmd_t));
4166
4167 mc.cmd = FC_DEL_LOGDRV;
4168 mc.opcode = OP_DEL_LOGDRV;
4169 mc.subopcode = logdrv;
4170
4171 rval = mega_internal_command(adapter, &mc, NULL);
4172
4173 /* log this event */
4174 if(rval) {
4175 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4176 return rval;
4177 }
4178
4179 /*
4180 * After deleting first logical drive, the logical drives must be
4181 * addressed by adding 0x80 to the logical drive id.
4182 */
4183 adapter->read_ldidmap = 1;
4184
4185 return rval;
4186 }
4187
4188
4189 /**
4190 * mega_get_max_sgl()
4191 * @adapter - pointer to our soft state
4192 *
4193 * Find out the maximum number of scatter-gather elements supported by this
4194 * version of the firmware
4195 */
4196 static void
4197 mega_get_max_sgl(adapter_t *adapter)
4198 {
4199 unsigned char raw_mbox[sizeof(struct mbox_out)];
4200 mbox_t *mbox;
4201
4202 mbox = (mbox_t *)raw_mbox;
4203
4204 memset(mbox, 0, sizeof(raw_mbox));
4205
4206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4207
4208 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4209
4210 raw_mbox[0] = MAIN_MISC_OPCODE;
4211 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4212
4213
4214 if( issue_scb_block(adapter, raw_mbox) ) {
4215 /*
4216 * f/w does not support this command. Choose the default value
4217 */
4218 adapter->sglen = MIN_SGLIST;
4219 }
4220 else {
4221 adapter->sglen = *((char *)adapter->mega_buffer);
4222
4223 /*
4224 * Make sure this is not more than the resources we are
4225 * planning to allocate
4226 */
4227 if ( adapter->sglen > MAX_SGLIST )
4228 adapter->sglen = MAX_SGLIST;
4229 }
4230
4231 return;
4232 }
4233
4234
4235 /**
4236 * mega_support_cluster()
4237 * @adapter - pointer to our soft state
4238 *
4239 * Find out if this firmware support cluster calls.
4240 */
4241 static int
4242 mega_support_cluster(adapter_t *adapter)
4243 {
4244 unsigned char raw_mbox[sizeof(struct mbox_out)];
4245 mbox_t *mbox;
4246
4247 mbox = (mbox_t *)raw_mbox;
4248
4249 memset(mbox, 0, sizeof(raw_mbox));
4250
4251 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4252
4253 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4254
4255 /*
4256 * Try to get the initiator id. This command will succeed iff the
4257 * clustering is available on this HBA.
4258 */
4259 raw_mbox[0] = MEGA_GET_TARGET_ID;
4260
4261 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4262
4263 /*
4264 * Cluster support available. Get the initiator target id.
4265 * Tell our id to mid-layer too.
4266 */
4267 adapter->this_id = *(u32 *)adapter->mega_buffer;
4268 adapter->host->this_id = adapter->this_id;
4269
4270 return 1;
4271 }
4272
4273 return 0;
4274 }
4275
4276 #ifdef CONFIG_PROC_FS
4277 /**
4278 * mega_adapinq()
4279 * @adapter - pointer to our soft state
4280 * @dma_handle - DMA address of the buffer
4281 *
4282 * Issue internal comamnds while interrupts are available.
4283 * We only issue direct mailbox commands from within the driver. ioctl()
4284 * interface using these routines can issue passthru commands.
4285 */
4286 static int
4287 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4288 {
4289 megacmd_t mc;
4290
4291 memset(&mc, 0, sizeof(megacmd_t));
4292
4293 if( adapter->flag & BOARD_40LD ) {
4294 mc.cmd = FC_NEW_CONFIG;
4295 mc.opcode = NC_SUBOP_ENQUIRY3;
4296 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4297 }
4298 else {
4299 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4300 }
4301
4302 mc.xferaddr = (u32)dma_handle;
4303
4304 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4305 return -1;
4306 }
4307
4308 return 0;
4309 }
4310
4311
4312 /** mega_internal_dev_inquiry()
4313 * @adapter - pointer to our soft state
4314 * @ch - channel for this device
4315 * @tgt - ID of this device
4316 * @buf_dma_handle - DMA address of the buffer
4317 *
4318 * Issue the scsi inquiry for the specified device.
4319 */
4320 static int
4321 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4322 dma_addr_t buf_dma_handle)
4323 {
4324 mega_passthru *pthru;
4325 dma_addr_t pthru_dma_handle;
4326 megacmd_t mc;
4327 int rval;
4328 struct pci_dev *pdev;
4329
4330
4331 /*
4332 * For all internal commands, the buffer must be allocated in <4GB
4333 * address range
4334 */
4335 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4336
4337 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4338 &pthru_dma_handle);
4339
4340 if( pthru == NULL ) {
4341 free_local_pdev(pdev);
4342 return -1;
4343 }
4344
4345 pthru->timeout = 2;
4346 pthru->ars = 1;
4347 pthru->reqsenselen = 14;
4348 pthru->islogical = 0;
4349
4350 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4351
4352 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4353
4354 pthru->cdblen = 6;
4355
4356 pthru->cdb[0] = INQUIRY;
4357 pthru->cdb[1] = 0;
4358 pthru->cdb[2] = 0;
4359 pthru->cdb[3] = 0;
4360 pthru->cdb[4] = 255;
4361 pthru->cdb[5] = 0;
4362
4363
4364 pthru->dataxferaddr = (u32)buf_dma_handle;
4365 pthru->dataxferlen = 256;
4366
4367 memset(&mc, 0, sizeof(megacmd_t));
4368
4369 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4370 mc.xferaddr = (u32)pthru_dma_handle;
4371
4372 rval = mega_internal_command(adapter, &mc, pthru);
4373
4374 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4375 pthru_dma_handle);
4376
4377 free_local_pdev(pdev);
4378
4379 return rval;
4380 }
4381 #endif
4382
4383 /**
4384 * mega_internal_command()
4385 * @adapter - pointer to our soft state
4386 * @mc - the mailbox command
4387 * @pthru - Passthru structure for DCDB commands
4388 *
4389 * Issue the internal commands in interrupt mode.
4390 * The last argument is the address of the passthru structure if the command
4391 * to be fired is a passthru command
4392 *
4393 * lockscope specifies whether the caller has already acquired the lock. Of
4394 * course, the caller must know which lock we are talking about.
4395 *
4396 * Note: parameter 'pthru' is null for non-passthru commands.
4397 */
4398 static int
4399 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4400 {
4401 Scsi_Cmnd *scmd;
4402 struct scsi_device *sdev;
4403 scb_t *scb;
4404 int rval;
4405
4406 /*
4407 * The internal commands share one command id and hence are
4408 * serialized. This is so because we want to reserve maximum number of
4409 * available command ids for the I/O commands.
4410 */
4411 mutex_lock(&adapter->int_mtx);
4412
4413 scb = &adapter->int_scb;
4414 memset(scb, 0, sizeof(scb_t));
4415
4416 scmd = &adapter->int_scmd;
4417 memset(scmd, 0, sizeof(Scsi_Cmnd));
4418
4419 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4420 memset(sdev, 0, sizeof(struct scsi_device));
4421 scmd->device = sdev;
4422
4423 scmd->device->host = adapter->host;
4424 scmd->host_scribble = (void *)scb;
4425 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4426
4427 scb->state |= SCB_ACTIVE;
4428 scb->cmd = scmd;
4429
4430 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4431
4432 /*
4433 * Is it a passthru command
4434 */
4435 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4436
4437 scb->pthru = pthru;
4438 }
4439
4440 scb->idx = CMDID_INT_CMDS;
4441
4442 megaraid_queue(scmd, mega_internal_done);
4443
4444 wait_for_completion(&adapter->int_waitq);
4445
4446 rval = scmd->result;
4447 mc->status = scmd->result;
4448 kfree(sdev);
4449
4450 /*
4451 * Print a debug message for all failed commands. Applications can use
4452 * this information.
4453 */
4454 if( scmd->result && trace_level ) {
4455 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4456 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4457 }
4458
4459 mutex_unlock(&adapter->int_mtx);
4460
4461 return rval;
4462 }
4463
4464
4465 /**
4466 * mega_internal_done()
4467 * @scmd - internal scsi command
4468 *
4469 * Callback routine for internal commands.
4470 */
4471 static void
4472 mega_internal_done(Scsi_Cmnd *scmd)
4473 {
4474 adapter_t *adapter;
4475
4476 adapter = (adapter_t *)scmd->device->host->hostdata;
4477
4478 complete(&adapter->int_waitq);
4479
4480 }
4481
4482
4483 static struct scsi_host_template megaraid_template = {
4484 .module = THIS_MODULE,
4485 .name = "MegaRAID",
4486 .proc_name = "megaraid_legacy",
4487 .info = megaraid_info,
4488 .queuecommand = megaraid_queue,
4489 .bios_param = megaraid_biosparam,
4490 .max_sectors = MAX_SECTORS_PER_IO,
4491 .can_queue = MAX_COMMANDS,
4492 .this_id = DEFAULT_INITIATOR_ID,
4493 .sg_tablesize = MAX_SGLIST,
4494 .cmd_per_lun = DEF_CMD_PER_LUN,
4495 .use_clustering = ENABLE_CLUSTERING,
4496 .eh_abort_handler = megaraid_abort,
4497 .eh_device_reset_handler = megaraid_reset,
4498 .eh_bus_reset_handler = megaraid_reset,
4499 .eh_host_reset_handler = megaraid_reset,
4500 };
4501
4502 static int __devinit
4503 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4504 {
4505 struct Scsi_Host *host;
4506 adapter_t *adapter;
4507 unsigned long mega_baseport, tbase, flag = 0;
4508 u16 subsysid, subsysvid;
4509 u8 pci_bus, pci_dev_func;
4510 int irq, i, j;
4511 int error = -ENODEV;
4512
4513 if (pci_enable_device(pdev))
4514 goto out;
4515 pci_set_master(pdev);
4516
4517 pci_bus = pdev->bus->number;
4518 pci_dev_func = pdev->devfn;
4519
4520 /*
4521 * The megaraid3 stuff reports the ID of the Intel part which is not
4522 * remotely specific to the megaraid
4523 */
4524 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4525 u16 magic;
4526 /*
4527 * Don't fall over the Compaq management cards using the same
4528 * PCI identifier
4529 */
4530 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4531 pdev->subsystem_device == 0xC000)
4532 return -ENODEV;
4533 /* Now check the magic signature byte */
4534 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4535 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4536 return -ENODEV;
4537 /* Ok it is probably a megaraid */
4538 }
4539
4540 /*
4541 * For these vendor and device ids, signature offsets are not
4542 * valid and 64 bit is implicit
4543 */
4544 if (id->driver_data & BOARD_64BIT)
4545 flag |= BOARD_64BIT;
4546 else {
4547 u32 magic64;
4548
4549 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4550 if (magic64 == HBA_SIGNATURE_64BIT)
4551 flag |= BOARD_64BIT;
4552 }
4553
4554 subsysvid = pdev->subsystem_vendor;
4555 subsysid = pdev->subsystem_device;
4556
4557 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4558 id->vendor, id->device, pci_bus);
4559
4560 printk("slot %d:func %d\n",
4561 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4562
4563 /* Read the base port and IRQ from PCI */
4564 mega_baseport = pci_resource_start(pdev, 0);
4565 irq = pdev->irq;
4566
4567 tbase = mega_baseport;
4568 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4569 flag |= BOARD_MEMMAP;
4570
4571 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4572 printk(KERN_WARNING "megaraid: mem region busy!\n");
4573 goto out_disable_device;
4574 }
4575
4576 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4577 if (!mega_baseport) {
4578 printk(KERN_WARNING
4579 "megaraid: could not map hba memory\n");
4580 goto out_release_region;
4581 }
4582 } else {
4583 flag |= BOARD_IOMAP;
4584 mega_baseport += 0x10;
4585
4586 if (!request_region(mega_baseport, 16, "megaraid"))
4587 goto out_disable_device;
4588 }
4589
4590 /* Initialize SCSI Host structure */
4591 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4592 if (!host)
4593 goto out_iounmap;
4594
4595 adapter = (adapter_t *)host->hostdata;
4596 memset(adapter, 0, sizeof(adapter_t));
4597
4598 printk(KERN_NOTICE
4599 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4600 host->host_no, mega_baseport, irq);
4601
4602 adapter->base = mega_baseport;
4603 if (flag & BOARD_MEMMAP)
4604 adapter->mmio_base = (void __iomem *) mega_baseport;
4605
4606 INIT_LIST_HEAD(&adapter->free_list);
4607 INIT_LIST_HEAD(&adapter->pending_list);
4608 INIT_LIST_HEAD(&adapter->completed_list);
4609
4610 adapter->flag = flag;
4611 spin_lock_init(&adapter->lock);
4612
4613 host->cmd_per_lun = max_cmd_per_lun;
4614 host->max_sectors = max_sectors_per_io;
4615
4616 adapter->dev = pdev;
4617 adapter->host = host;
4618
4619 adapter->host->irq = irq;
4620
4621 if (flag & BOARD_MEMMAP)
4622 adapter->host->base = tbase;
4623 else {
4624 adapter->host->io_port = tbase;
4625 adapter->host->n_io_port = 16;
4626 }
4627
4628 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4629
4630 /*
4631 * Allocate buffer to issue internal commands.
4632 */
4633 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4634 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4635 if (!adapter->mega_buffer) {
4636 printk(KERN_WARNING "megaraid: out of RAM.\n");
4637 goto out_host_put;
4638 }
4639
4640 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4641 if (!adapter->scb_list) {
4642 printk(KERN_WARNING "megaraid: out of RAM.\n");
4643 goto out_free_cmd_buffer;
4644 }
4645
4646 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4647 megaraid_isr_memmapped : megaraid_isr_iomapped,
4648 IRQF_SHARED, "megaraid", adapter)) {
4649 printk(KERN_WARNING
4650 "megaraid: Couldn't register IRQ %d!\n", irq);
4651 goto out_free_scb_list;
4652 }
4653
4654 if (mega_setup_mailbox(adapter))
4655 goto out_free_irq;
4656
4657 if (mega_query_adapter(adapter))
4658 goto out_free_mbox;
4659
4660 /*
4661 * Have checks for some buggy f/w
4662 */
4663 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4664 /*
4665 * Which firmware
4666 */
4667 if (!strcmp(adapter->fw_version, "3.00") ||
4668 !strcmp(adapter->fw_version, "3.01")) {
4669
4670 printk( KERN_WARNING
4671 "megaraid: Your card is a Dell PERC "
4672 "2/SC RAID controller with "
4673 "firmware\nmegaraid: 3.00 or 3.01. "
4674 "This driver is known to have "
4675 "corruption issues\nmegaraid: with "
4676 "those firmware versions on this "
4677 "specific card. In order\nmegaraid: "
4678 "to protect your data, please upgrade "
4679 "your firmware to version\nmegaraid: "
4680 "3.10 or later, available from the "
4681 "Dell Technical Support web\n"
4682 "megaraid: site at\nhttp://support."
4683 "dell.com/us/en/filelib/download/"
4684 "index.asp?fileid=2940\n"
4685 );
4686 }
4687 }
4688
4689 /*
4690 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4691 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4692 * support, since this firmware cannot handle 64 bit
4693 * addressing
4694 */
4695 if ((subsysvid == HP_SUBSYS_VID) &&
4696 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4697 /*
4698 * which firmware
4699 */
4700 if (!strcmp(adapter->fw_version, "H01.07") ||
4701 !strcmp(adapter->fw_version, "H01.08") ||
4702 !strcmp(adapter->fw_version, "H01.09") ) {
4703 printk(KERN_WARNING
4704 "megaraid: Firmware H.01.07, "
4705 "H.01.08, and H.01.09 on 1M/2M "
4706 "controllers\n"
4707 "megaraid: do not support 64 bit "
4708 "addressing.\nmegaraid: DISABLING "
4709 "64 bit support.\n");
4710 adapter->flag &= ~BOARD_64BIT;
4711 }
4712 }
4713
4714 if (mega_is_bios_enabled(adapter))
4715 mega_hbas[hba_count].is_bios_enabled = 1;
4716 mega_hbas[hba_count].hostdata_addr = adapter;
4717
4718 /*
4719 * Find out which channel is raid and which is scsi. This is
4720 * for ROMB support.
4721 */
4722 mega_enum_raid_scsi(adapter);
4723
4724 /*
4725 * Find out if a logical drive is set as the boot drive. If
4726 * there is one, will make that as the first logical drive.
4727 * ROMB: Do we have to boot from a physical drive. Then all
4728 * the physical drives would appear before the logical disks.
4729 * Else, all the physical drives would be exported to the mid
4730 * layer after logical drives.
4731 */
4732 mega_get_boot_drv(adapter);
4733
4734 if (adapter->boot_pdrv_enabled) {
4735 j = adapter->product_info.nchannels;
4736 for( i = 0; i < j; i++ )
4737 adapter->logdrv_chan[i] = 0;
4738 for( i = j; i < NVIRT_CHAN + j; i++ )
4739 adapter->logdrv_chan[i] = 1;
4740 } else {
4741 for (i = 0; i < NVIRT_CHAN; i++)
4742 adapter->logdrv_chan[i] = 1;
4743 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4744 adapter->logdrv_chan[i] = 0;
4745 adapter->mega_ch_class <<= NVIRT_CHAN;
4746 }
4747
4748 /*
4749 * Do we support random deletion and addition of logical
4750 * drives
4751 */
4752 adapter->read_ldidmap = 0; /* set it after first logdrv
4753 delete cmd */
4754 adapter->support_random_del = mega_support_random_del(adapter);
4755
4756 /* Initialize SCBs */
4757 if (mega_init_scb(adapter))
4758 goto out_free_mbox;
4759
4760 /*
4761 * Reset the pending commands counter
4762 */
4763 atomic_set(&adapter->pend_cmds, 0);
4764
4765 /*
4766 * Reset the adapter quiescent flag
4767 */
4768 atomic_set(&adapter->quiescent, 0);
4769
4770 hba_soft_state[hba_count] = adapter;
4771
4772 /*
4773 * Fill in the structure which needs to be passed back to the
4774 * application when it does an ioctl() for controller related
4775 * information.
4776 */
4777 i = hba_count;
4778
4779 mcontroller[i].base = mega_baseport;
4780 mcontroller[i].irq = irq;
4781 mcontroller[i].numldrv = adapter->numldrv;
4782 mcontroller[i].pcibus = pci_bus;
4783 mcontroller[i].pcidev = id->device;
4784 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4785 mcontroller[i].pciid = -1;
4786 mcontroller[i].pcivendor = id->vendor;
4787 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4788 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4789
4790
4791 /* Set the Mode of addressing to 64 bit if we can */
4792 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4793 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4794 adapter->has_64bit_addr = 1;
4795 } else {
4796 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4797 adapter->has_64bit_addr = 0;
4798 }
4799
4800 mutex_init(&adapter->int_mtx);
4801 init_completion(&adapter->int_waitq);
4802
4803 adapter->this_id = DEFAULT_INITIATOR_ID;
4804 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4805
4806 #if MEGA_HAVE_CLUSTERING
4807 /*
4808 * Is cluster support enabled on this controller
4809 * Note: In a cluster the HBAs ( the initiators ) will have
4810 * different target IDs and we cannot assume it to be 7. Call
4811 * to mega_support_cluster() will get the target ids also if
4812 * the cluster support is available
4813 */
4814 adapter->has_cluster = mega_support_cluster(adapter);
4815 if (adapter->has_cluster) {
4816 printk(KERN_NOTICE
4817 "megaraid: Cluster driver, initiator id:%d\n",
4818 adapter->this_id);
4819 }
4820 #endif
4821
4822 pci_set_drvdata(pdev, host);
4823
4824 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4825
4826 error = scsi_add_host(host, &pdev->dev);
4827 if (error)
4828 goto out_free_mbox;
4829
4830 scsi_scan_host(host);
4831 hba_count++;
4832 return 0;
4833
4834 out_free_mbox:
4835 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4836 adapter->una_mbox64, adapter->una_mbox64_dma);
4837 out_free_irq:
4838 free_irq(adapter->host->irq, adapter);
4839 out_free_scb_list:
4840 kfree(adapter->scb_list);
4841 out_free_cmd_buffer:
4842 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4843 adapter->mega_buffer, adapter->buf_dma_handle);
4844 out_host_put:
4845 scsi_host_put(host);
4846 out_iounmap:
4847 if (flag & BOARD_MEMMAP)
4848 iounmap((void *)mega_baseport);
4849 out_release_region:
4850 if (flag & BOARD_MEMMAP)
4851 release_mem_region(tbase, 128);
4852 else
4853 release_region(mega_baseport, 16);
4854 out_disable_device:
4855 pci_disable_device(pdev);
4856 out:
4857 return error;
4858 }
4859
4860 static void
4861 __megaraid_shutdown(adapter_t *adapter)
4862 {
4863 u_char raw_mbox[sizeof(struct mbox_out)];
4864 mbox_t *mbox = (mbox_t *)raw_mbox;
4865 int i;
4866
4867 /* Flush adapter cache */
4868 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4869 raw_mbox[0] = FLUSH_ADAPTER;
4870
4871 free_irq(adapter->host->irq, adapter);
4872
4873 /* Issue a blocking (interrupts disabled) command to the card */
4874 issue_scb_block(adapter, raw_mbox);
4875
4876 /* Flush disks cache */
4877 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4878 raw_mbox[0] = FLUSH_SYSTEM;
4879
4880 /* Issue a blocking (interrupts disabled) command to the card */
4881 issue_scb_block(adapter, raw_mbox);
4882
4883 if (atomic_read(&adapter->pend_cmds) > 0)
4884 printk(KERN_WARNING "megaraid: pending commands!!\n");
4885
4886 /*
4887 * Have a delibrate delay to make sure all the caches are
4888 * actually flushed.
4889 */
4890 for (i = 0; i <= 10; i++)
4891 mdelay(1000);
4892 }
4893
4894 static void
4895 megaraid_remove_one(struct pci_dev *pdev)
4896 {
4897 struct Scsi_Host *host = pci_get_drvdata(pdev);
4898 adapter_t *adapter = (adapter_t *)host->hostdata;
4899
4900 scsi_remove_host(host);
4901
4902 __megaraid_shutdown(adapter);
4903
4904 /* Free our resources */
4905 if (adapter->flag & BOARD_MEMMAP) {
4906 iounmap((void *)adapter->base);
4907 release_mem_region(adapter->host->base, 128);
4908 } else
4909 release_region(adapter->base, 16);
4910
4911 mega_free_sgl(adapter);
4912
4913 #ifdef CONFIG_PROC_FS
4914 if (adapter->controller_proc_dir_entry) {
4915 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4916 remove_proc_entry("config",
4917 adapter->controller_proc_dir_entry);
4918 remove_proc_entry("mailbox",
4919 adapter->controller_proc_dir_entry);
4920 #if MEGA_HAVE_ENH_PROC
4921 remove_proc_entry("rebuild-rate",
4922 adapter->controller_proc_dir_entry);
4923 remove_proc_entry("battery-status",
4924 adapter->controller_proc_dir_entry);
4925
4926 remove_proc_entry("diskdrives-ch0",
4927 adapter->controller_proc_dir_entry);
4928 remove_proc_entry("diskdrives-ch1",
4929 adapter->controller_proc_dir_entry);
4930 remove_proc_entry("diskdrives-ch2",
4931 adapter->controller_proc_dir_entry);
4932 remove_proc_entry("diskdrives-ch3",
4933 adapter->controller_proc_dir_entry);
4934
4935 remove_proc_entry("raiddrives-0-9",
4936 adapter->controller_proc_dir_entry);
4937 remove_proc_entry("raiddrives-10-19",
4938 adapter->controller_proc_dir_entry);
4939 remove_proc_entry("raiddrives-20-29",
4940 adapter->controller_proc_dir_entry);
4941 remove_proc_entry("raiddrives-30-39",
4942 adapter->controller_proc_dir_entry);
4943 #endif
4944 {
4945 char buf[12] = { 0 };
4946 sprintf(buf, "hba%d", adapter->host->host_no);
4947 remove_proc_entry(buf, mega_proc_dir_entry);
4948 }
4949 }
4950 #endif
4951
4952 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4953 adapter->mega_buffer, adapter->buf_dma_handle);
4954 kfree(adapter->scb_list);
4955 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4956 adapter->una_mbox64, adapter->una_mbox64_dma);
4957
4958 scsi_host_put(host);
4959 pci_disable_device(pdev);
4960
4961 hba_count--;
4962 }
4963
4964 static void
4965 megaraid_shutdown(struct pci_dev *pdev)
4966 {
4967 struct Scsi_Host *host = pci_get_drvdata(pdev);
4968 adapter_t *adapter = (adapter_t *)host->hostdata;
4969
4970 __megaraid_shutdown(adapter);
4971 }
4972
4973 static struct pci_device_id megaraid_pci_tbl[] = {
4974 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4975 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4976 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4977 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4978 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4979 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4980 {0,}
4981 };
4982 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4983
4984 static struct pci_driver megaraid_pci_driver = {
4985 .name = "megaraid_legacy",
4986 .id_table = megaraid_pci_tbl,
4987 .probe = megaraid_probe_one,
4988 .remove = __devexit_p(megaraid_remove_one),
4989 .shutdown = megaraid_shutdown,
4990 };
4991
4992 static int __init megaraid_init(void)
4993 {
4994 int error;
4995
4996 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4997 max_cmd_per_lun = MAX_CMD_PER_LUN;
4998 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4999 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5000
5001 #ifdef CONFIG_PROC_FS
5002 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5003 if (!mega_proc_dir_entry) {
5004 printk(KERN_WARNING
5005 "megaraid: failed to create megaraid root\n");
5006 }
5007 #endif
5008 error = pci_register_driver(&megaraid_pci_driver);
5009 if (error) {
5010 #ifdef CONFIG_PROC_FS
5011 remove_proc_entry("megaraid", &proc_root);
5012 #endif
5013 return error;
5014 }
5015
5016 /*
5017 * Register the driver as a character device, for applications
5018 * to access it for ioctls.
5019 * First argument (major) to register_chrdev implies a dynamic
5020 * major number allocation.
5021 */
5022 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5023 if (!major) {
5024 printk(KERN_WARNING
5025 "megaraid: failed to register char device\n");
5026 }
5027
5028 return 0;
5029 }
5030
5031 static void __exit megaraid_exit(void)
5032 {
5033 /*
5034 * Unregister the character device interface to the driver.
5035 */
5036 unregister_chrdev(major, "megadev_legacy");
5037
5038 pci_unregister_driver(&megaraid_pci_driver);
5039
5040 #ifdef CONFIG_PROC_FS
5041 remove_proc_entry("megaraid", &proc_root);
5042 #endif
5043 }
5044
5045 module_init(megaraid_init);
5046 module_exit(megaraid_exit);
5047
5048 /* vi: set ts=8 sw=8 tw=78: */
Linux 2.6 libata-dev (mirror)