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[deliverable/linux.git] / drivers / scsi / megaraid.c
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright © 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com>
21 *
22 * Description: Linux device driver for LSI Logic MegaRAID controller
23 *
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
25 * 518, 520, 531, 532
26 *
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the mailing list
29 * linux-scsi@vger.kernel.org .
30 *
31 */
32
33 #include <linux/mm.h>
34 #include <linux/fs.h>
35 #include <linux/blkdev.h>
36 #include <asm/uaccess.h>
37 #include <asm/io.h>
38 #include <linux/completion.h>
39 #include <linux/delay.h>
40 #include <linux/proc_fs.h>
41 #include <linux/reboot.h>
42 #include <linux/module.h>
43 #include <linux/list.h>
44 #include <linux/interrupt.h>
45 #include <linux/pci.h>
46 #include <linux/init.h>
47 #include <scsi/scsicam.h>
48
49 #include "scsi.h"
50 #include <scsi/scsi_host.h>
51
52 #include "megaraid.h"
53
54 #define MEGARAID_MODULE_VERSION "2.00.3"
55
56 MODULE_AUTHOR ("LSI Logic Corporation");
57 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
58 MODULE_LICENSE ("GPL");
59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
60
61 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
62 module_param(max_cmd_per_lun, uint, 0);
63 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
64
65 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
66 module_param(max_sectors_per_io, ushort, 0);
67 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
68
69
70 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
71 module_param(max_mbox_busy_wait, ushort, 0);
72 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
73
74 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
75 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
76 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
77 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
78
79 /*
80 * Global variables
81 */
82
83 static int hba_count;
84 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
85 static struct proc_dir_entry *mega_proc_dir_entry;
86
87 /* For controller re-ordering */
88 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
89
90 /*
91 * The File Operations structure for the serial/ioctl interface of the driver
92 */
93 static struct file_operations megadev_fops = {
94 .owner = THIS_MODULE,
95 .ioctl = megadev_ioctl,
96 .open = megadev_open,
97 };
98
99 /*
100 * Array to structures for storing the information about the controllers. This
101 * information is sent to the user level applications, when they do an ioctl
102 * for this information.
103 */
104 static struct mcontroller mcontroller[MAX_CONTROLLERS];
105
106 /* The current driver version */
107 static u32 driver_ver = 0x02000000;
108
109 /* major number used by the device for character interface */
110 static int major;
111
112 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
113
114
115 /*
116 * Debug variable to print some diagnostic messages
117 */
118 static int trace_level;
119
120 /**
121 * mega_setup_mailbox()
122 * @adapter - pointer to our soft state
123 *
124 * Allocates a 8 byte aligned memory for the handshake mailbox.
125 */
126 static int
127 mega_setup_mailbox(adapter_t *adapter)
128 {
129 unsigned long align;
130
131 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
132 sizeof(mbox64_t), &adapter->una_mbox64_dma);
133
134 if( !adapter->una_mbox64 ) return -1;
135
136 adapter->mbox = &adapter->una_mbox64->mbox;
137
138 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
139 (~0UL ^ 0xFUL));
140
141 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
142
143 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
144
145 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
146
147 /*
148 * Register the mailbox if the controller is an io-mapped controller
149 */
150 if( adapter->flag & BOARD_IOMAP ) {
151
152 outb_p(adapter->mbox_dma & 0xFF,
153 adapter->host->io_port + MBOX_PORT0);
154
155 outb_p((adapter->mbox_dma >> 8) & 0xFF,
156 adapter->host->io_port + MBOX_PORT1);
157
158 outb_p((adapter->mbox_dma >> 16) & 0xFF,
159 adapter->host->io_port + MBOX_PORT2);
160
161 outb_p((adapter->mbox_dma >> 24) & 0xFF,
162 adapter->host->io_port + MBOX_PORT3);
163
164 outb_p(ENABLE_MBOX_BYTE,
165 adapter->host->io_port + ENABLE_MBOX_REGION);
166
167 irq_ack(adapter);
168
169 irq_enable(adapter);
170 }
171
172 return 0;
173 }
174
175
176 /*
177 * mega_query_adapter()
178 * @adapter - pointer to our soft state
179 *
180 * Issue the adapter inquiry commands to the controller and find out
181 * information and parameter about the devices attached
182 */
183 static int
184 mega_query_adapter(adapter_t *adapter)
185 {
186 dma_addr_t prod_info_dma_handle;
187 mega_inquiry3 *inquiry3;
188 u8 raw_mbox[sizeof(struct mbox_out)];
189 mbox_t *mbox;
190 int retval;
191
192 /* Initialize adapter inquiry mailbox */
193
194 mbox = (mbox_t *)raw_mbox;
195
196 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
197 memset(&mbox->m_out, 0, sizeof(raw_mbox));
198
199 /*
200 * Try to issue Inquiry3 command
201 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
202 * update enquiry3 structure
203 */
204 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
205
206 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
207
208 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
209 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
210 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
211
212 /* Issue a blocking command to the card */
213 if ((retval = issue_scb_block(adapter, raw_mbox))) {
214 /* the adapter does not support 40ld */
215
216 mraid_ext_inquiry *ext_inq;
217 mraid_inquiry *inq;
218 dma_addr_t dma_handle;
219
220 ext_inq = pci_alloc_consistent(adapter->dev,
221 sizeof(mraid_ext_inquiry), &dma_handle);
222
223 if( ext_inq == NULL ) return -1;
224
225 inq = &ext_inq->raid_inq;
226
227 mbox->m_out.xferaddr = (u32)dma_handle;
228
229 /*issue old 0x04 command to adapter */
230 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
231
232 issue_scb_block(adapter, raw_mbox);
233
234 /*
235 * update Enquiry3 and ProductInfo structures with
236 * mraid_inquiry structure
237 */
238 mega_8_to_40ld(inq, inquiry3,
239 (mega_product_info *)&adapter->product_info);
240
241 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
242 ext_inq, dma_handle);
243
244 } else { /*adapter supports 40ld */
245 adapter->flag |= BOARD_40LD;
246
247 /*
248 * get product_info, which is static information and will be
249 * unchanged
250 */
251 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
252 &adapter->product_info,
253 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
254
255 mbox->m_out.xferaddr = prod_info_dma_handle;
256
257 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
258 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
259
260 if ((retval = issue_scb_block(adapter, raw_mbox)))
261 printk(KERN_WARNING
262 "megaraid: Product_info cmd failed with error: %d\n",
263 retval);
264
265 pci_unmap_single(adapter->dev, prod_info_dma_handle,
266 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
267 }
268
269
270 /*
271 * kernel scans the channels from 0 to <= max_channel
272 */
273 adapter->host->max_channel =
274 adapter->product_info.nchannels + NVIRT_CHAN -1;
275
276 adapter->host->max_id = 16; /* max targets per channel */
277
278 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
279
280 adapter->host->cmd_per_lun = max_cmd_per_lun;
281
282 adapter->numldrv = inquiry3->num_ldrv;
283
284 adapter->max_cmds = adapter->product_info.max_commands;
285
286 if(adapter->max_cmds > MAX_COMMANDS)
287 adapter->max_cmds = MAX_COMMANDS;
288
289 adapter->host->can_queue = adapter->max_cmds - 1;
290
291 /*
292 * Get the maximum number of scatter-gather elements supported by this
293 * firmware
294 */
295 mega_get_max_sgl(adapter);
296
297 adapter->host->sg_tablesize = adapter->sglen;
298
299
300 /* use HP firmware and bios version encoding */
301 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
302 sprintf (adapter->fw_version, "%c%d%d.%d%d",
303 adapter->product_info.fw_version[2],
304 adapter->product_info.fw_version[1] >> 8,
305 adapter->product_info.fw_version[1] & 0x0f,
306 adapter->product_info.fw_version[0] >> 8,
307 adapter->product_info.fw_version[0] & 0x0f);
308 sprintf (adapter->bios_version, "%c%d%d.%d%d",
309 adapter->product_info.bios_version[2],
310 adapter->product_info.bios_version[1] >> 8,
311 adapter->product_info.bios_version[1] & 0x0f,
312 adapter->product_info.bios_version[0] >> 8,
313 adapter->product_info.bios_version[0] & 0x0f);
314 } else {
315 memcpy(adapter->fw_version,
316 (char *)adapter->product_info.fw_version, 4);
317 adapter->fw_version[4] = 0;
318
319 memcpy(adapter->bios_version,
320 (char *)adapter->product_info.bios_version, 4);
321
322 adapter->bios_version[4] = 0;
323 }
324
325 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
326 adapter->fw_version, adapter->bios_version, adapter->numldrv);
327
328 /*
329 * Do we support extended (>10 bytes) cdbs
330 */
331 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
332 if (adapter->support_ext_cdb)
333 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
334
335
336 return 0;
337 }
338
339 /**
340 * mega_runpendq()
341 * @adapter - pointer to our soft state
342 *
343 * Runs through the list of pending requests.
344 */
345 static inline void
346 mega_runpendq(adapter_t *adapter)
347 {
348 if(!list_empty(&adapter->pending_list))
349 __mega_runpendq(adapter);
350 }
351
352 /*
353 * megaraid_queue()
354 * @scmd - Issue this scsi command
355 * @done - the callback hook into the scsi mid-layer
356 *
357 * The command queuing entry point for the mid-layer.
358 */
359 static int
360 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
361 {
362 adapter_t *adapter;
363 scb_t *scb;
364 int busy=0;
365 unsigned long flags;
366
367 adapter = (adapter_t *)scmd->device->host->hostdata;
368
369 scmd->scsi_done = done;
370
371
372 /*
373 * Allocate and build a SCB request
374 * busy flag will be set if mega_build_cmd() command could not
375 * allocate scb. We will return non-zero status in that case.
376 * NOTE: scb can be null even though certain commands completed
377 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
378 * return 0 in that case.
379 */
380
381 spin_lock_irqsave(&adapter->lock, flags);
382 scb = mega_build_cmd(adapter, scmd, &busy);
383 if (!scb)
384 goto out;
385
386 scb->state |= SCB_PENDQ;
387 list_add_tail(&scb->list, &adapter->pending_list);
388
389 /*
390 * Check if the HBA is in quiescent state, e.g., during a
391 * delete logical drive opertion. If it is, don't run
392 * the pending_list.
393 */
394 if (atomic_read(&adapter->quiescent) == 0)
395 mega_runpendq(adapter);
396
397 busy = 0;
398 out:
399 spin_unlock_irqrestore(&adapter->lock, flags);
400 return busy;
401 }
402
403 /**
404 * mega_allocate_scb()
405 * @adapter - pointer to our soft state
406 * @cmd - scsi command from the mid-layer
407 *
408 * Allocate a SCB structure. This is the central structure for controller
409 * commands.
410 */
411 static inline scb_t *
412 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
413 {
414 struct list_head *head = &adapter->free_list;
415 scb_t *scb;
416
417 /* Unlink command from Free List */
418 if( !list_empty(head) ) {
419
420 scb = list_entry(head->next, scb_t, list);
421
422 list_del_init(head->next);
423
424 scb->state = SCB_ACTIVE;
425 scb->cmd = cmd;
426 scb->dma_type = MEGA_DMA_TYPE_NONE;
427
428 return scb;
429 }
430
431 return NULL;
432 }
433
434 /**
435 * mega_get_ldrv_num()
436 * @adapter - pointer to our soft state
437 * @cmd - scsi mid layer command
438 * @channel - channel on the controller
439 *
440 * Calculate the logical drive number based on the information in scsi command
441 * and the channel number.
442 */
443 static inline int
444 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
445 {
446 int tgt;
447 int ldrv_num;
448
449 tgt = cmd->device->id;
450
451 if ( tgt > adapter->this_id )
452 tgt--; /* we do not get inquires for initiator id */
453
454 ldrv_num = (channel * 15) + tgt;
455
456
457 /*
458 * If we have a logical drive with boot enabled, project it first
459 */
460 if( adapter->boot_ldrv_enabled ) {
461 if( ldrv_num == 0 ) {
462 ldrv_num = adapter->boot_ldrv;
463 }
464 else {
465 if( ldrv_num <= adapter->boot_ldrv ) {
466 ldrv_num--;
467 }
468 }
469 }
470
471 /*
472 * If "delete logical drive" feature is enabled on this controller.
473 * Do only if at least one delete logical drive operation was done.
474 *
475 * Also, after logical drive deletion, instead of logical drive number,
476 * the value returned should be 0x80+logical drive id.
477 *
478 * These is valid only for IO commands.
479 */
480
481 if (adapter->support_random_del && adapter->read_ldidmap )
482 switch (cmd->cmnd[0]) {
483 case READ_6: /* fall through */
484 case WRITE_6: /* fall through */
485 case READ_10: /* fall through */
486 case WRITE_10:
487 ldrv_num += 0x80;
488 }
489
490 return ldrv_num;
491 }
492
493 /**
494 * mega_build_cmd()
495 * @adapter - pointer to our soft state
496 * @cmd - Prepare using this scsi command
497 * @busy - busy flag if no resources
498 *
499 * Prepares a command and scatter gather list for the controller. This routine
500 * also finds out if the commands is intended for a logical drive or a
501 * physical device and prepares the controller command accordingly.
502 *
503 * We also re-order the logical drives and physical devices based on their
504 * boot settings.
505 */
506 static scb_t *
507 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
508 {
509 mega_ext_passthru *epthru;
510 mega_passthru *pthru;
511 scb_t *scb;
512 mbox_t *mbox;
513 long seg;
514 char islogical;
515 int max_ldrv_num;
516 int channel = 0;
517 int target = 0;
518 int ldrv_num = 0; /* logical drive number */
519
520
521 /*
522 * filter the internal and ioctl commands
523 */
524 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
525 return cmd->buffer;
526 }
527
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
659 if (cmd->use_sg) {
660 struct scatterlist *sg;
661
662 sg = (struct scatterlist *)cmd->request_buffer;
663 buf = kmap_atomic(sg->page, KM_IRQ0) +
664 sg->offset;
665 } else
666 buf = cmd->request_buffer;
667 memset(buf, 0, cmd->cmnd[4]);
668 if (cmd->use_sg) {
669 struct scatterlist *sg;
670
671 sg = (struct scatterlist *)cmd->request_buffer;
672 kunmap_atomic(buf - sg->offset, KM_IRQ0);
673 }
674 cmd->result = (DID_OK << 16);
675 cmd->scsi_done(cmd);
676 return NULL;
677 }
678
679 case READ_CAPACITY:
680 case INQUIRY:
681
682 if(!(adapter->flag & (1L << cmd->device->channel))) {
683
684 printk(KERN_NOTICE
685 "scsi%d: scanning scsi channel %d ",
686 adapter->host->host_no,
687 cmd->device->channel);
688 printk("for logical drives.\n");
689
690 adapter->flag |= (1L << cmd->device->channel);
691 }
692
693 /* Allocate a SCB and initialize passthru */
694 if(!(scb = mega_allocate_scb(adapter, cmd))) {
695 *busy = 1;
696 return NULL;
697 }
698 pthru = scb->pthru;
699
700 mbox = (mbox_t *)scb->raw_mbox;
701 memset(mbox, 0, sizeof(scb->raw_mbox));
702 memset(pthru, 0, sizeof(mega_passthru));
703
704 pthru->timeout = 0;
705 pthru->ars = 1;
706 pthru->reqsenselen = 14;
707 pthru->islogical = 1;
708 pthru->logdrv = ldrv_num;
709 pthru->cdblen = cmd->cmd_len;
710 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
711
712 if( adapter->has_64bit_addr ) {
713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
714 }
715 else {
716 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
717 }
718
719 scb->dma_direction = PCI_DMA_FROMDEVICE;
720
721 pthru->numsgelements = mega_build_sglist(adapter, scb,
722 &pthru->dataxferaddr, &pthru->dataxferlen);
723
724 mbox->m_out.xferaddr = scb->pthru_dma_addr;
725
726 return scb;
727
728 case READ_6:
729 case WRITE_6:
730 case READ_10:
731 case WRITE_10:
732 case READ_12:
733 case WRITE_12:
734
735 /* Allocate a SCB and initialize mailbox */
736 if(!(scb = mega_allocate_scb(adapter, cmd))) {
737 *busy = 1;
738 return NULL;
739 }
740 mbox = (mbox_t *)scb->raw_mbox;
741
742 memset(mbox, 0, sizeof(scb->raw_mbox));
743 mbox->m_out.logdrv = ldrv_num;
744
745 /*
746 * A little hack: 2nd bit is zero for all scsi read
747 * commands and is set for all scsi write commands
748 */
749 if( adapter->has_64bit_addr ) {
750 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
751 MEGA_MBOXCMD_LWRITE64:
752 MEGA_MBOXCMD_LREAD64 ;
753 }
754 else {
755 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
756 MEGA_MBOXCMD_LWRITE:
757 MEGA_MBOXCMD_LREAD ;
758 }
759
760 /*
761 * 6-byte READ(0x08) or WRITE(0x0A) cdb
762 */
763 if( cmd->cmd_len == 6 ) {
764 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
765 mbox->m_out.lba =
766 ((u32)cmd->cmnd[1] << 16) |
767 ((u32)cmd->cmnd[2] << 8) |
768 (u32)cmd->cmnd[3];
769
770 mbox->m_out.lba &= 0x1FFFFF;
771
772 #if MEGA_HAVE_STATS
773 /*
774 * Take modulo 0x80, since the logical drive
775 * number increases by 0x80 when a logical
776 * drive was deleted
777 */
778 if (*cmd->cmnd == READ_6) {
779 adapter->nreads[ldrv_num%0x80]++;
780 adapter->nreadblocks[ldrv_num%0x80] +=
781 mbox->m_out.numsectors;
782 } else {
783 adapter->nwrites[ldrv_num%0x80]++;
784 adapter->nwriteblocks[ldrv_num%0x80] +=
785 mbox->m_out.numsectors;
786 }
787 #endif
788 }
789
790 /*
791 * 10-byte READ(0x28) or WRITE(0x2A) cdb
792 */
793 if( cmd->cmd_len == 10 ) {
794 mbox->m_out.numsectors =
795 (u32)cmd->cmnd[8] |
796 ((u32)cmd->cmnd[7] << 8);
797 mbox->m_out.lba =
798 ((u32)cmd->cmnd[2] << 24) |
799 ((u32)cmd->cmnd[3] << 16) |
800 ((u32)cmd->cmnd[4] << 8) |
801 (u32)cmd->cmnd[5];
802
803 #if MEGA_HAVE_STATS
804 if (*cmd->cmnd == READ_10) {
805 adapter->nreads[ldrv_num%0x80]++;
806 adapter->nreadblocks[ldrv_num%0x80] +=
807 mbox->m_out.numsectors;
808 } else {
809 adapter->nwrites[ldrv_num%0x80]++;
810 adapter->nwriteblocks[ldrv_num%0x80] +=
811 mbox->m_out.numsectors;
812 }
813 #endif
814 }
815
816 /*
817 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
818 */
819 if( cmd->cmd_len == 12 ) {
820 mbox->m_out.lba =
821 ((u32)cmd->cmnd[2] << 24) |
822 ((u32)cmd->cmnd[3] << 16) |
823 ((u32)cmd->cmnd[4] << 8) |
824 (u32)cmd->cmnd[5];
825
826 mbox->m_out.numsectors =
827 ((u32)cmd->cmnd[6] << 24) |
828 ((u32)cmd->cmnd[7] << 16) |
829 ((u32)cmd->cmnd[8] << 8) |
830 (u32)cmd->cmnd[9];
831
832 #if MEGA_HAVE_STATS
833 if (*cmd->cmnd == READ_12) {
834 adapter->nreads[ldrv_num%0x80]++;
835 adapter->nreadblocks[ldrv_num%0x80] +=
836 mbox->m_out.numsectors;
837 } else {
838 adapter->nwrites[ldrv_num%0x80]++;
839 adapter->nwriteblocks[ldrv_num%0x80] +=
840 mbox->m_out.numsectors;
841 }
842 #endif
843 }
844
845 /*
846 * If it is a read command
847 */
848 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
849 scb->dma_direction = PCI_DMA_FROMDEVICE;
850 }
851 else {
852 scb->dma_direction = PCI_DMA_TODEVICE;
853 }
854
855 /* Calculate Scatter-Gather info */
856 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
857 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
858
859 return scb;
860
861 #if MEGA_HAVE_CLUSTERING
862 case RESERVE: /* Fall through */
863 case RELEASE:
864
865 /*
866 * Do we support clustering and is the support enabled
867 */
868 if( ! adapter->has_cluster ) {
869
870 cmd->result = (DID_BAD_TARGET << 16);
871 cmd->scsi_done(cmd);
872 return NULL;
873 }
874
875 /* Allocate a SCB and initialize mailbox */
876 if(!(scb = mega_allocate_scb(adapter, cmd))) {
877 *busy = 1;
878 return NULL;
879 }
880
881 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
882 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
883 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
884
885 scb->raw_mbox[3] = ldrv_num;
886
887 scb->dma_direction = PCI_DMA_NONE;
888
889 return scb;
890 #endif
891
892 default:
893 cmd->result = (DID_BAD_TARGET << 16);
894 cmd->scsi_done(cmd);
895 return NULL;
896 }
897 }
898
899 /*
900 * Passthru drive commands
901 */
902 else {
903 /* Allocate a SCB and initialize passthru */
904 if(!(scb = mega_allocate_scb(adapter, cmd))) {
905 *busy = 1;
906 return NULL;
907 }
908
909 mbox = (mbox_t *)scb->raw_mbox;
910 memset(mbox, 0, sizeof(scb->raw_mbox));
911
912 if( adapter->support_ext_cdb ) {
913
914 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
915 channel, target);
916
917 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
918
919 mbox->m_out.xferaddr = scb->epthru_dma_addr;
920
921 }
922 else {
923
924 pthru = mega_prepare_passthru(adapter, scb, cmd,
925 channel, target);
926
927 /* Initialize mailbox */
928 if( adapter->has_64bit_addr ) {
929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
930 }
931 else {
932 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
933 }
934
935 mbox->m_out.xferaddr = scb->pthru_dma_addr;
936
937 }
938 return scb;
939 }
940 return NULL;
941 }
942
943
944 /**
945 * mega_prepare_passthru()
946 * @adapter - pointer to our soft state
947 * @scb - our scsi control block
948 * @cmd - scsi command from the mid-layer
949 * @channel - actual channel on the controller
950 * @target - actual id on the controller.
951 *
952 * prepare a command for the scsi physical devices.
953 */
954 static mega_passthru *
955 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
956 int channel, int target)
957 {
958 mega_passthru *pthru;
959
960 pthru = scb->pthru;
961 memset(pthru, 0, sizeof (mega_passthru));
962
963 /* 0=6sec/1=60sec/2=10min/3=3hrs */
964 pthru->timeout = 2;
965
966 pthru->ars = 1;
967 pthru->reqsenselen = 14;
968 pthru->islogical = 0;
969
970 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
971
972 pthru->target = (adapter->flag & BOARD_40LD) ?
973 (channel << 4) | target : target;
974
975 pthru->cdblen = cmd->cmd_len;
976 pthru->logdrv = cmd->device->lun;
977
978 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
979
980 /* Not sure about the direction */
981 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
982
983 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
984 switch (cmd->cmnd[0]) {
985 case INQUIRY:
986 case READ_CAPACITY:
987 if(!(adapter->flag & (1L << cmd->device->channel))) {
988
989 printk(KERN_NOTICE
990 "scsi%d: scanning scsi channel %d [P%d] ",
991 adapter->host->host_no,
992 cmd->device->channel, channel);
993 printk("for physical devices.\n");
994
995 adapter->flag |= (1L << cmd->device->channel);
996 }
997 /* Fall through */
998 default:
999 pthru->numsgelements = mega_build_sglist(adapter, scb,
1000 &pthru->dataxferaddr, &pthru->dataxferlen);
1001 break;
1002 }
1003 return pthru;
1004 }
1005
1006
1007 /**
1008 * mega_prepare_extpassthru()
1009 * @adapter - pointer to our soft state
1010 * @scb - our scsi control block
1011 * @cmd - scsi command from the mid-layer
1012 * @channel - actual channel on the controller
1013 * @target - actual id on the controller.
1014 *
1015 * prepare a command for the scsi physical devices. This rountine prepares
1016 * commands for devices which can take extended CDBs (>10 bytes)
1017 */
1018 static mega_ext_passthru *
1019 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1020 int channel, int target)
1021 {
1022 mega_ext_passthru *epthru;
1023
1024 epthru = scb->epthru;
1025 memset(epthru, 0, sizeof(mega_ext_passthru));
1026
1027 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1028 epthru->timeout = 2;
1029
1030 epthru->ars = 1;
1031 epthru->reqsenselen = 14;
1032 epthru->islogical = 0;
1033
1034 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1035 epthru->target = (adapter->flag & BOARD_40LD) ?
1036 (channel << 4) | target : target;
1037
1038 epthru->cdblen = cmd->cmd_len;
1039 epthru->logdrv = cmd->device->lun;
1040
1041 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1042
1043 /* Not sure about the direction */
1044 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1045
1046 switch(cmd->cmnd[0]) {
1047 case INQUIRY:
1048 case READ_CAPACITY:
1049 if(!(adapter->flag & (1L << cmd->device->channel))) {
1050
1051 printk(KERN_NOTICE
1052 "scsi%d: scanning scsi channel %d [P%d] ",
1053 adapter->host->host_no,
1054 cmd->device->channel, channel);
1055 printk("for physical devices.\n");
1056
1057 adapter->flag |= (1L << cmd->device->channel);
1058 }
1059 /* Fall through */
1060 default:
1061 epthru->numsgelements = mega_build_sglist(adapter, scb,
1062 &epthru->dataxferaddr, &epthru->dataxferlen);
1063 break;
1064 }
1065
1066 return epthru;
1067 }
1068
1069 static void
1070 __mega_runpendq(adapter_t *adapter)
1071 {
1072 scb_t *scb;
1073 struct list_head *pos, *next;
1074
1075 /* Issue any pending commands to the card */
1076 list_for_each_safe(pos, next, &adapter->pending_list) {
1077
1078 scb = list_entry(pos, scb_t, list);
1079
1080 if( !(scb->state & SCB_ISSUED) ) {
1081
1082 if( issue_scb(adapter, scb) != 0 )
1083 return;
1084 }
1085 }
1086
1087 return;
1088 }
1089
1090
1091 /**
1092 * issue_scb()
1093 * @adapter - pointer to our soft state
1094 * @scb - scsi control block
1095 *
1096 * Post a command to the card if the mailbox is available, otherwise return
1097 * busy. We also take the scb from the pending list if the mailbox is
1098 * available.
1099 */
1100 static int
1101 issue_scb(adapter_t *adapter, scb_t *scb)
1102 {
1103 volatile mbox64_t *mbox64 = adapter->mbox64;
1104 volatile mbox_t *mbox = adapter->mbox;
1105 unsigned int i = 0;
1106
1107 if(unlikely(mbox->m_in.busy)) {
1108 do {
1109 udelay(1);
1110 i++;
1111 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1112
1113 if(mbox->m_in.busy) return -1;
1114 }
1115
1116 /* Copy mailbox data into host structure */
1117 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1118 sizeof(struct mbox_out));
1119
1120 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1121 mbox->m_in.busy = 1; /* Set busy */
1122
1123
1124 /*
1125 * Increment the pending queue counter
1126 */
1127 atomic_inc(&adapter->pend_cmds);
1128
1129 switch (mbox->m_out.cmd) {
1130 case MEGA_MBOXCMD_LREAD64:
1131 case MEGA_MBOXCMD_LWRITE64:
1132 case MEGA_MBOXCMD_PASSTHRU64:
1133 case MEGA_MBOXCMD_EXTPTHRU:
1134 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1135 mbox64->xfer_segment_hi = 0;
1136 mbox->m_out.xferaddr = 0xFFFFFFFF;
1137 break;
1138 default:
1139 mbox64->xfer_segment_lo = 0;
1140 mbox64->xfer_segment_hi = 0;
1141 }
1142
1143 /*
1144 * post the command
1145 */
1146 scb->state |= SCB_ISSUED;
1147
1148 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1149 mbox->m_in.poll = 0;
1150 mbox->m_in.ack = 0;
1151 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1152 }
1153 else {
1154 irq_enable(adapter);
1155 issue_command(adapter);
1156 }
1157
1158 return 0;
1159 }
1160
1161 /*
1162 * Wait until the controller's mailbox is available
1163 */
1164 static inline int
1165 mega_busywait_mbox (adapter_t *adapter)
1166 {
1167 if (adapter->mbox->m_in.busy)
1168 return __mega_busywait_mbox(adapter);
1169 return 0;
1170 }
1171
1172 /**
1173 * issue_scb_block()
1174 * @adapter - pointer to our soft state
1175 * @raw_mbox - the mailbox
1176 *
1177 * Issue a scb in synchronous and non-interrupt mode
1178 */
1179 static int
1180 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1181 {
1182 volatile mbox64_t *mbox64 = adapter->mbox64;
1183 volatile mbox_t *mbox = adapter->mbox;
1184 u8 byte;
1185
1186 /* Wait until mailbox is free */
1187 if(mega_busywait_mbox (adapter))
1188 goto bug_blocked_mailbox;
1189
1190 /* Copy mailbox data into host structure */
1191 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1192 mbox->m_out.cmdid = 0xFE;
1193 mbox->m_in.busy = 1;
1194
1195 switch (raw_mbox[0]) {
1196 case MEGA_MBOXCMD_LREAD64:
1197 case MEGA_MBOXCMD_LWRITE64:
1198 case MEGA_MBOXCMD_PASSTHRU64:
1199 case MEGA_MBOXCMD_EXTPTHRU:
1200 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1201 mbox64->xfer_segment_hi = 0;
1202 mbox->m_out.xferaddr = 0xFFFFFFFF;
1203 break;
1204 default:
1205 mbox64->xfer_segment_lo = 0;
1206 mbox64->xfer_segment_hi = 0;
1207 }
1208
1209 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1210 mbox->m_in.poll = 0;
1211 mbox->m_in.ack = 0;
1212 mbox->m_in.numstatus = 0xFF;
1213 mbox->m_in.status = 0xFF;
1214 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1215
1216 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1217 cpu_relax();
1218
1219 mbox->m_in.numstatus = 0xFF;
1220
1221 while( (volatile u8)mbox->m_in.poll != 0x77 )
1222 cpu_relax();
1223
1224 mbox->m_in.poll = 0;
1225 mbox->m_in.ack = 0x77;
1226
1227 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1228
1229 while(RDINDOOR(adapter) & 0x2)
1230 cpu_relax();
1231 }
1232 else {
1233 irq_disable(adapter);
1234 issue_command(adapter);
1235
1236 while (!((byte = irq_state(adapter)) & INTR_VALID))
1237 cpu_relax();
1238
1239 set_irq_state(adapter, byte);
1240 irq_enable(adapter);
1241 irq_ack(adapter);
1242 }
1243
1244 return mbox->m_in.status;
1245
1246 bug_blocked_mailbox:
1247 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1248 udelay (1000);
1249 return -1;
1250 }
1251
1252
1253 /**
1254 * megaraid_isr_iomapped()
1255 * @irq - irq
1256 * @devp - pointer to our soft state
1257 * @regs - unused
1258 *
1259 * Interrupt service routine for io-mapped controllers.
1260 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1261 * and service the completed commands.
1262 */
1263 static irqreturn_t
1264 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1265 {
1266 adapter_t *adapter = devp;
1267 unsigned long flags;
1268 u8 status;
1269 u8 nstatus;
1270 u8 completed[MAX_FIRMWARE_STATUS];
1271 u8 byte;
1272 int handled = 0;
1273
1274
1275 /*
1276 * loop till F/W has more commands for us to complete.
1277 */
1278 spin_lock_irqsave(&adapter->lock, flags);
1279
1280 do {
1281 /* Check if a valid interrupt is pending */
1282 byte = irq_state(adapter);
1283 if( (byte & VALID_INTR_BYTE) == 0 ) {
1284 /*
1285 * No more pending commands
1286 */
1287 goto out_unlock;
1288 }
1289 set_irq_state(adapter, byte);
1290
1291 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1292 == 0xFF)
1293 cpu_relax();
1294 adapter->mbox->m_in.numstatus = 0xFF;
1295
1296 status = adapter->mbox->m_in.status;
1297
1298 /*
1299 * decrement the pending queue counter
1300 */
1301 atomic_sub(nstatus, &adapter->pend_cmds);
1302
1303 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1304 nstatus);
1305
1306 /* Acknowledge interrupt */
1307 irq_ack(adapter);
1308
1309 mega_cmd_done(adapter, completed, nstatus, status);
1310
1311 mega_rundoneq(adapter);
1312
1313 handled = 1;
1314
1315 /* Loop through any pending requests */
1316 if(atomic_read(&adapter->quiescent) == 0) {
1317 mega_runpendq(adapter);
1318 }
1319
1320 } while(1);
1321
1322 out_unlock:
1323
1324 spin_unlock_irqrestore(&adapter->lock, flags);
1325
1326 return IRQ_RETVAL(handled);
1327 }
1328
1329
1330 /**
1331 * megaraid_isr_memmapped()
1332 * @irq - irq
1333 * @devp - pointer to our soft state
1334 * @regs - unused
1335 *
1336 * Interrupt service routine for memory-mapped controllers.
1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1338 * and service the completed commands.
1339 */
1340 static irqreturn_t
1341 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
1342 {
1343 adapter_t *adapter = devp;
1344 unsigned long flags;
1345 u8 status;
1346 u32 dword = 0;
1347 u8 nstatus;
1348 u8 completed[MAX_FIRMWARE_STATUS];
1349 int handled = 0;
1350
1351
1352 /*
1353 * loop till F/W has more commands for us to complete.
1354 */
1355 spin_lock_irqsave(&adapter->lock, flags);
1356
1357 do {
1358 /* Check if a valid interrupt is pending */
1359 dword = RDOUTDOOR(adapter);
1360 if(dword != 0x10001234) {
1361 /*
1362 * No more pending commands
1363 */
1364 goto out_unlock;
1365 }
1366 WROUTDOOR(adapter, 0x10001234);
1367
1368 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1369 == 0xFF) {
1370 cpu_relax();
1371 }
1372 adapter->mbox->m_in.numstatus = 0xFF;
1373
1374 status = adapter->mbox->m_in.status;
1375
1376 /*
1377 * decrement the pending queue counter
1378 */
1379 atomic_sub(nstatus, &adapter->pend_cmds);
1380
1381 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1382 nstatus);
1383
1384 /* Acknowledge interrupt */
1385 WRINDOOR(adapter, 0x2);
1386
1387 handled = 1;
1388
1389 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1390
1391 mega_cmd_done(adapter, completed, nstatus, status);
1392
1393 mega_rundoneq(adapter);
1394
1395 /* Loop through any pending requests */
1396 if(atomic_read(&adapter->quiescent) == 0) {
1397 mega_runpendq(adapter);
1398 }
1399
1400 } while(1);
1401
1402 out_unlock:
1403
1404 spin_unlock_irqrestore(&adapter->lock, flags);
1405
1406 return IRQ_RETVAL(handled);
1407 }
1408 /**
1409 * mega_cmd_done()
1410 * @adapter - pointer to our soft state
1411 * @completed - array of ids of completed commands
1412 * @nstatus - number of completed commands
1413 * @status - status of the last command completed
1414 *
1415 * Complete the comamnds and call the scsi mid-layer callback hooks.
1416 */
1417 static void
1418 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1419 {
1420 mega_ext_passthru *epthru = NULL;
1421 struct scatterlist *sgl;
1422 Scsi_Cmnd *cmd = NULL;
1423 mega_passthru *pthru = NULL;
1424 mbox_t *mbox = NULL;
1425 u8 c;
1426 scb_t *scb;
1427 int islogical;
1428 int cmdid;
1429 int i;
1430
1431 /*
1432 * for all the commands completed, call the mid-layer callback routine
1433 * and free the scb.
1434 */
1435 for( i = 0; i < nstatus; i++ ) {
1436
1437 cmdid = completed[i];
1438
1439 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1440 scb = &adapter->int_scb;
1441 cmd = scb->cmd;
1442 mbox = (mbox_t *)scb->raw_mbox;
1443
1444 /*
1445 * Internal command interface do not fire the extended
1446 * passthru or 64-bit passthru
1447 */
1448 pthru = scb->pthru;
1449
1450 }
1451 else {
1452 scb = &adapter->scb_list[cmdid];
1453
1454 /*
1455 * Make sure f/w has completed a valid command
1456 */
1457 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1458 printk(KERN_CRIT
1459 "megaraid: invalid command ");
1460 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1461 cmdid, scb->state, scb->cmd);
1462
1463 continue;
1464 }
1465
1466 /*
1467 * Was a abort issued for this command
1468 */
1469 if( scb->state & SCB_ABORT ) {
1470
1471 printk(KERN_WARNING
1472 "megaraid: aborted cmd %lx[%x] complete.\n",
1473 scb->cmd->serial_number, scb->idx);
1474
1475 scb->cmd->result = (DID_ABORT << 16);
1476
1477 list_add_tail(SCSI_LIST(scb->cmd),
1478 &adapter->completed_list);
1479
1480 mega_free_scb(adapter, scb);
1481
1482 continue;
1483 }
1484
1485 /*
1486 * Was a reset issued for this command
1487 */
1488 if( scb->state & SCB_RESET ) {
1489
1490 printk(KERN_WARNING
1491 "megaraid: reset cmd %lx[%x] complete.\n",
1492 scb->cmd->serial_number, scb->idx);
1493
1494 scb->cmd->result = (DID_RESET << 16);
1495
1496 list_add_tail(SCSI_LIST(scb->cmd),
1497 &adapter->completed_list);
1498
1499 mega_free_scb (adapter, scb);
1500
1501 continue;
1502 }
1503
1504 cmd = scb->cmd;
1505 pthru = scb->pthru;
1506 epthru = scb->epthru;
1507 mbox = (mbox_t *)scb->raw_mbox;
1508
1509 #if MEGA_HAVE_STATS
1510 {
1511
1512 int logdrv = mbox->m_out.logdrv;
1513
1514 islogical = adapter->logdrv_chan[cmd->channel];
1515 /*
1516 * Maintain an error counter for the logical drive.
1517 * Some application like SNMP agent need such
1518 * statistics
1519 */
1520 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521 cmd->cmnd[0] == READ_10 ||
1522 cmd->cmnd[0] == READ_12)) {
1523 /*
1524 * Logical drive number increases by 0x80 when
1525 * a logical drive is deleted
1526 */
1527 adapter->rd_errors[logdrv%0x80]++;
1528 }
1529
1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531 cmd->cmnd[0] == WRITE_10 ||
1532 cmd->cmnd[0] == WRITE_12)) {
1533 /*
1534 * Logical drive number increases by 0x80 when
1535 * a logical drive is deleted
1536 */
1537 adapter->wr_errors[logdrv%0x80]++;
1538 }
1539
1540 }
1541 #endif
1542 }
1543
1544 /*
1545 * Do not return the presence of hard disk on the channel so,
1546 * inquiry sent, and returned data==hard disk or removable
1547 * hard disk and not logical, request should return failure! -
1548 * PJ
1549 */
1550 islogical = adapter->logdrv_chan[cmd->device->channel];
1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553 if( cmd->use_sg ) {
1554 sgl = (struct scatterlist *)
1555 cmd->request_buffer;
1556
1557 if( sgl->page ) {
1558 c = *(unsigned char *)
1559 page_address((&sgl[0])->page) +
1560 (&sgl[0])->offset;
1561 }
1562 else {
1563 printk(KERN_WARNING
1564 "megaraid: invalid sg.\n");
1565 c = 0;
1566 }
1567 }
1568 else {
1569 c = *(u8 *)cmd->request_buffer;
1570 }
1571
1572 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1573 ((c & 0x1F ) == TYPE_DISK)) {
1574 status = 0xF0;
1575 }
1576 }
1577
1578 /* clear result; otherwise, success returns corrupt value */
1579 cmd->result = 0;
1580
1581 /* Convert MegaRAID status to Linux error code */
1582 switch (status) {
1583 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1584 cmd->result |= (DID_OK << 16);
1585 break;
1586
1587 case 0x02: /* ERROR_ABORTED, i.e.
1588 SCSI_STATUS_CHECK_CONDITION */
1589
1590 /* set sense_buffer and result fields */
1591 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1592 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1593
1594 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1595 14);
1596
1597 cmd->result = (DRIVER_SENSE << 24) |
1598 (DID_OK << 16) |
1599 (CHECK_CONDITION << 1);
1600 }
1601 else {
1602 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1603
1604 memcpy(cmd->sense_buffer,
1605 epthru->reqsensearea, 14);
1606
1607 cmd->result = (DRIVER_SENSE << 24) |
1608 (DID_OK << 16) |
1609 (CHECK_CONDITION << 1);
1610 } else {
1611 cmd->sense_buffer[0] = 0x70;
1612 cmd->sense_buffer[2] = ABORTED_COMMAND;
1613 cmd->result |= (CHECK_CONDITION << 1);
1614 }
1615 }
1616 break;
1617
1618 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1619 SCSI_STATUS_BUSY */
1620 cmd->result |= (DID_BUS_BUSY << 16) | status;
1621 break;
1622
1623 default:
1624 #if MEGA_HAVE_CLUSTERING
1625 /*
1626 * If TEST_UNIT_READY fails, we know
1627 * MEGA_RESERVATION_STATUS failed
1628 */
1629 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1630 cmd->result |= (DID_ERROR << 16) |
1631 (RESERVATION_CONFLICT << 1);
1632 }
1633 else
1634 /*
1635 * Error code returned is 1 if Reserve or Release
1636 * failed or the input parameter is invalid
1637 */
1638 if( status == 1 &&
1639 (cmd->cmnd[0] == RESERVE ||
1640 cmd->cmnd[0] == RELEASE) ) {
1641
1642 cmd->result |= (DID_ERROR << 16) |
1643 (RESERVATION_CONFLICT << 1);
1644 }
1645 else
1646 #endif
1647 cmd->result |= (DID_BAD_TARGET << 16)|status;
1648 }
1649
1650 /*
1651 * Only free SCBs for the commands coming down from the
1652 * mid-layer, not for which were issued internally
1653 *
1654 * For internal command, restore the status returned by the
1655 * firmware so that user can interpret it.
1656 */
1657 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1658 cmd->result = status;
1659
1660 /*
1661 * Remove the internal command from the pending list
1662 */
1663 list_del_init(&scb->list);
1664 scb->state = SCB_FREE;
1665 }
1666 else {
1667 mega_free_scb(adapter, scb);
1668 }
1669
1670 /* Add Scsi_Command to end of completed queue */
1671 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1672 }
1673 }
1674
1675
1676 /*
1677 * mega_runpendq()
1678 *
1679 * Run through the list of completed requests and finish it
1680 */
1681 static void
1682 mega_rundoneq (adapter_t *adapter)
1683 {
1684 Scsi_Cmnd *cmd;
1685 struct list_head *pos;
1686
1687 list_for_each(pos, &adapter->completed_list) {
1688
1689 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1690
1691 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1692 cmd->scsi_done(cmd);
1693 }
1694
1695 INIT_LIST_HEAD(&adapter->completed_list);
1696 }
1697
1698
1699 /*
1700 * Free a SCB structure
1701 * Note: We assume the scsi commands associated with this scb is not free yet.
1702 */
1703 static void
1704 mega_free_scb(adapter_t *adapter, scb_t *scb)
1705 {
1706 unsigned long length;
1707
1708 switch( scb->dma_type ) {
1709
1710 case MEGA_DMA_TYPE_NONE:
1711 break;
1712
1713 case MEGA_BULK_DATA:
1714 if (scb->cmd->use_sg == 0)
1715 length = scb->cmd->request_bufflen;
1716 else {
1717 struct scatterlist *sgl =
1718 (struct scatterlist *)scb->cmd->request_buffer;
1719 length = sgl->length;
1720 }
1721 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1722 length, scb->dma_direction);
1723 break;
1724
1725 case MEGA_SGLIST:
1726 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1727 scb->cmd->use_sg, scb->dma_direction);
1728 break;
1729
1730 default:
1731 break;
1732 }
1733
1734 /*
1735 * Remove from the pending list
1736 */
1737 list_del_init(&scb->list);
1738
1739 /* Link the scb back into free list */
1740 scb->state = SCB_FREE;
1741 scb->cmd = NULL;
1742
1743 list_add(&scb->list, &adapter->free_list);
1744 }
1745
1746
1747 static int
1748 __mega_busywait_mbox (adapter_t *adapter)
1749 {
1750 volatile mbox_t *mbox = adapter->mbox;
1751 long counter;
1752
1753 for (counter = 0; counter < 10000; counter++) {
1754 if (!mbox->m_in.busy)
1755 return 0;
1756 udelay(100); yield();
1757 }
1758 return -1; /* give up after 1 second */
1759 }
1760
1761 /*
1762 * Copies data to SGLIST
1763 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1764 */
1765 static int
1766 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1767 {
1768 struct scatterlist *sgl;
1769 struct page *page;
1770 unsigned long offset;
1771 unsigned int length;
1772 Scsi_Cmnd *cmd;
1773 int sgcnt;
1774 int idx;
1775
1776 cmd = scb->cmd;
1777
1778 /* Scatter-gather not used */
1779 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1780 !adapter->has_64bit_addr)) {
1781
1782 if (cmd->use_sg == 0) {
1783 page = virt_to_page(cmd->request_buffer);
1784 offset = offset_in_page(cmd->request_buffer);
1785 length = cmd->request_bufflen;
1786 } else {
1787 sgl = (struct scatterlist *)cmd->request_buffer;
1788 page = sgl->page;
1789 offset = sgl->offset;
1790 length = sgl->length;
1791 }
1792
1793 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1794 page, offset,
1795 length,
1796 scb->dma_direction);
1797 scb->dma_type = MEGA_BULK_DATA;
1798
1799 /*
1800 * We need to handle special 64-bit commands that need a
1801 * minimum of 1 SG
1802 */
1803 if( adapter->has_64bit_addr ) {
1804 scb->sgl64[0].address = scb->dma_h_bulkdata;
1805 scb->sgl64[0].length = length;
1806 *buf = (u32)scb->sgl_dma_addr;
1807 *len = (u32)length;
1808 return 1;
1809 }
1810 else {
1811 *buf = (u32)scb->dma_h_bulkdata;
1812 *len = (u32)length;
1813 }
1814 return 0;
1815 }
1816
1817 sgl = (struct scatterlist *)cmd->request_buffer;
1818
1819 /*
1820 * Copy Scatter-Gather list info into controller structure.
1821 *
1822 * The number of sg elements returned must not exceed our limit
1823 */
1824 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1825 scb->dma_direction);
1826
1827 scb->dma_type = MEGA_SGLIST;
1828
1829 if( sgcnt > adapter->sglen ) BUG();
1830
1831 *len = 0;
1832
1833 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1834
1835 if( adapter->has_64bit_addr ) {
1836 scb->sgl64[idx].address = sg_dma_address(sgl);
1837 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1838 }
1839 else {
1840 scb->sgl[idx].address = sg_dma_address(sgl);
1841 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1842 }
1843 }
1844
1845 /* Reset pointer and length fields */
1846 *buf = scb->sgl_dma_addr;
1847
1848 /* Return count of SG requests */
1849 return sgcnt;
1850 }
1851
1852
1853 /*
1854 * mega_8_to_40ld()
1855 *
1856 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1857 * Enquiry3 structures for later use
1858 */
1859 static void
1860 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1861 mega_product_info *product_info)
1862 {
1863 int i;
1864
1865 product_info->max_commands = inquiry->adapter_info.max_commands;
1866 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1867 product_info->nchannels = inquiry->adapter_info.nchannels;
1868
1869 for (i = 0; i < 4; i++) {
1870 product_info->fw_version[i] =
1871 inquiry->adapter_info.fw_version[i];
1872
1873 product_info->bios_version[i] =
1874 inquiry->adapter_info.bios_version[i];
1875 }
1876 enquiry3->cache_flush_interval =
1877 inquiry->adapter_info.cache_flush_interval;
1878
1879 product_info->dram_size = inquiry->adapter_info.dram_size;
1880
1881 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1882
1883 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1884 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1885 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1886 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1887 }
1888
1889 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1890 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1891 }
1892
1893 static inline void
1894 mega_free_sgl(adapter_t *adapter)
1895 {
1896 scb_t *scb;
1897 int i;
1898
1899 for(i = 0; i < adapter->max_cmds; i++) {
1900
1901 scb = &adapter->scb_list[i];
1902
1903 if( scb->sgl64 ) {
1904 pci_free_consistent(adapter->dev,
1905 sizeof(mega_sgl64) * adapter->sglen,
1906 scb->sgl64,
1907 scb->sgl_dma_addr);
1908
1909 scb->sgl64 = NULL;
1910 }
1911
1912 if( scb->pthru ) {
1913 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1914 scb->pthru, scb->pthru_dma_addr);
1915
1916 scb->pthru = NULL;
1917 }
1918
1919 if( scb->epthru ) {
1920 pci_free_consistent(adapter->dev,
1921 sizeof(mega_ext_passthru),
1922 scb->epthru, scb->epthru_dma_addr);
1923
1924 scb->epthru = NULL;
1925 }
1926
1927 }
1928 }
1929
1930
1931 /*
1932 * Get information about the card/driver
1933 */
1934 const char *
1935 megaraid_info(struct Scsi_Host *host)
1936 {
1937 static char buffer[512];
1938 adapter_t *adapter;
1939
1940 adapter = (adapter_t *)host->hostdata;
1941
1942 sprintf (buffer,
1943 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1944 adapter->fw_version, adapter->product_info.max_commands,
1945 adapter->host->max_id, adapter->host->max_channel,
1946 adapter->host->max_lun);
1947 return buffer;
1948 }
1949
1950 /*
1951 * Abort a previous SCSI request. Only commands on the pending list can be
1952 * aborted. All the commands issued to the F/W must complete.
1953 */
1954 static int
1955 megaraid_abort(Scsi_Cmnd *cmd)
1956 {
1957 adapter_t *adapter;
1958 int rval;
1959
1960 adapter = (adapter_t *)cmd->device->host->hostdata;
1961
1962 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1963
1964 /*
1965 * This is required here to complete any completed requests
1966 * to be communicated over to the mid layer.
1967 */
1968 mega_rundoneq(adapter);
1969
1970 return rval;
1971 }
1972
1973
1974 static int
1975 megaraid_reset(struct scsi_cmnd *cmd)
1976 {
1977 adapter_t *adapter;
1978 megacmd_t mc;
1979 int rval;
1980
1981 adapter = (adapter_t *)cmd->device->host->hostdata;
1982
1983 #if MEGA_HAVE_CLUSTERING
1984 mc.cmd = MEGA_CLUSTER_CMD;
1985 mc.opcode = MEGA_RESET_RESERVATIONS;
1986
1987 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1988 printk(KERN_WARNING
1989 "megaraid: reservation reset failed.\n");
1990 }
1991 else {
1992 printk(KERN_INFO "megaraid: reservation reset.\n");
1993 }
1994 #endif
1995
1996 spin_lock_irq(&adapter->lock);
1997
1998 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1999
2000 /*
2001 * This is required here to complete any completed requests
2002 * to be communicated over to the mid layer.
2003 */
2004 mega_rundoneq(adapter);
2005 spin_unlock_irq(&adapter->lock);
2006
2007 return rval;
2008 }
2009
2010 /**
2011 * megaraid_abort_and_reset()
2012 * @adapter - megaraid soft state
2013 * @cmd - scsi command to be aborted or reset
2014 * @aor - abort or reset flag
2015 *
2016 * Try to locate the scsi command in the pending queue. If found and is not
2017 * issued to the controller, abort/reset it. Otherwise return failure
2018 */
2019 static int
2020 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2021 {
2022 struct list_head *pos, *next;
2023 scb_t *scb;
2024
2025 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2026 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2027 cmd->cmnd[0], cmd->device->channel,
2028 cmd->device->id, cmd->device->lun);
2029
2030 if(list_empty(&adapter->pending_list))
2031 return FALSE;
2032
2033 list_for_each_safe(pos, next, &adapter->pending_list) {
2034
2035 scb = list_entry(pos, scb_t, list);
2036
2037 if (scb->cmd == cmd) { /* Found command */
2038
2039 scb->state |= aor;
2040
2041 /*
2042 * Check if this command has firmare owenership. If
2043 * yes, we cannot reset this command. Whenever, f/w
2044 * completes this command, we will return appropriate
2045 * status from ISR.
2046 */
2047 if( scb->state & SCB_ISSUED ) {
2048
2049 printk(KERN_WARNING
2050 "megaraid: %s-%lx[%x], fw owner.\n",
2051 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2052 cmd->serial_number, scb->idx);
2053
2054 return FALSE;
2055 }
2056 else {
2057
2058 /*
2059 * Not yet issued! Remove from the pending
2060 * list
2061 */
2062 printk(KERN_WARNING
2063 "megaraid: %s-%lx[%x], driver owner.\n",
2064 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2065 cmd->serial_number, scb->idx);
2066
2067 mega_free_scb(adapter, scb);
2068
2069 if( aor == SCB_ABORT ) {
2070 cmd->result = (DID_ABORT << 16);
2071 }
2072 else {
2073 cmd->result = (DID_RESET << 16);
2074 }
2075
2076 list_add_tail(SCSI_LIST(cmd),
2077 &adapter->completed_list);
2078
2079 return TRUE;
2080 }
2081 }
2082 }
2083
2084 return FALSE;
2085 }
2086
2087 static inline int
2088 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2089 {
2090 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2091
2092 if( *pdev == NULL ) return -1;
2093
2094 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2095
2096 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
2097 kfree(*pdev);
2098 return -1;
2099 }
2100
2101 return 0;
2102 }
2103
2104 static inline void
2105 free_local_pdev(struct pci_dev *pdev)
2106 {
2107 kfree(pdev);
2108 }
2109
2110 /**
2111 * mega_allocate_inquiry()
2112 * @dma_handle - handle returned for dma address
2113 * @pdev - handle to pci device
2114 *
2115 * allocates memory for inquiry structure
2116 */
2117 static inline void *
2118 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2119 {
2120 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2121 }
2122
2123
2124 static inline void
2125 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2126 {
2127 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2128 }
2129
2130
2131 #ifdef CONFIG_PROC_FS
2132 /* Following code handles /proc fs */
2133
2134 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2135 S_IRUSR | S_IFREG, \
2136 controller_proc_dir_entry, \
2137 func, adapter)
2138
2139 /**
2140 * mega_create_proc_entry()
2141 * @index - index in soft state array
2142 * @parent - parent node for this /proc entry
2143 *
2144 * Creates /proc entries for our controllers.
2145 */
2146 static void
2147 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2148 {
2149 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2150 u8 string[64] = { 0 };
2151 adapter_t *adapter = hba_soft_state[index];
2152
2153 sprintf(string, "hba%d", adapter->host->host_no);
2154
2155 controller_proc_dir_entry =
2156 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2157
2158 if(!controller_proc_dir_entry) {
2159 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2160 return;
2161 }
2162 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2163 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2164 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2165 #if MEGA_HAVE_ENH_PROC
2166 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2167 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2168 proc_battery);
2169
2170 /*
2171 * Display each physical drive on its channel
2172 */
2173 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2174 proc_pdrv_ch0);
2175 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2176 proc_pdrv_ch1);
2177 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2178 proc_pdrv_ch2);
2179 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2180 proc_pdrv_ch3);
2181
2182 /*
2183 * Display a set of up to 10 logical drive through each of following
2184 * /proc entries
2185 */
2186 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2187 proc_rdrv_10);
2188 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2189 proc_rdrv_20);
2190 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2191 proc_rdrv_30);
2192 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2193 proc_rdrv_40);
2194 #endif
2195 }
2196
2197
2198 /**
2199 * proc_read_config()
2200 * @page - buffer to write the data in
2201 * @start - where the actual data has been written in page
2202 * @offset - same meaning as the read system call
2203 * @count - same meaning as the read system call
2204 * @eof - set if no more data needs to be returned
2205 * @data - pointer to our soft state
2206 *
2207 * Display configuration information about the controller.
2208 */
2209 static int
2210 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2211 void *data)
2212 {
2213
2214 adapter_t *adapter = (adapter_t *)data;
2215 int len = 0;
2216
2217 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2218
2219 if(adapter->product_info.product_name[0])
2220 len += sprintf(page+len, "%s\n",
2221 adapter->product_info.product_name);
2222
2223 len += sprintf(page+len, "Controller Type: ");
2224
2225 if( adapter->flag & BOARD_MEMMAP ) {
2226 len += sprintf(page+len,
2227 "438/466/467/471/493/518/520/531/532\n");
2228 }
2229 else {
2230 len += sprintf(page+len,
2231 "418/428/434\n");
2232 }
2233
2234 if(adapter->flag & BOARD_40LD) {
2235 len += sprintf(page+len,
2236 "Controller Supports 40 Logical Drives\n");
2237 }
2238
2239 if(adapter->flag & BOARD_64BIT) {
2240 len += sprintf(page+len,
2241 "Controller capable of 64-bit memory addressing\n");
2242 }
2243 if( adapter->has_64bit_addr ) {
2244 len += sprintf(page+len,
2245 "Controller using 64-bit memory addressing\n");
2246 }
2247 else {
2248 len += sprintf(page+len,
2249 "Controller is not using 64-bit memory addressing\n");
2250 }
2251
2252 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2253 adapter->host->irq);
2254
2255 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2256 adapter->numldrv, adapter->product_info.nchannels);
2257
2258 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2259 adapter->fw_version, adapter->bios_version,
2260 adapter->product_info.dram_size);
2261
2262 len += sprintf(page+len,
2263 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2264 adapter->product_info.max_commands, adapter->max_cmds);
2265
2266 len += sprintf(page+len, "support_ext_cdb = %d\n",
2267 adapter->support_ext_cdb);
2268 len += sprintf(page+len, "support_random_del = %d\n",
2269 adapter->support_random_del);
2270 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2271 adapter->boot_ldrv_enabled);
2272 len += sprintf(page+len, "boot_ldrv = %d\n",
2273 adapter->boot_ldrv);
2274 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2275 adapter->boot_pdrv_enabled);
2276 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2277 adapter->boot_pdrv_ch);
2278 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2279 adapter->boot_pdrv_tgt);
2280 len += sprintf(page+len, "quiescent = %d\n",
2281 atomic_read(&adapter->quiescent));
2282 len += sprintf(page+len, "has_cluster = %d\n",
2283 adapter->has_cluster);
2284
2285 len += sprintf(page+len, "\nModule Parameters:\n");
2286 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2287 max_cmd_per_lun);
2288 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2289 max_sectors_per_io);
2290
2291 *eof = 1;
2292
2293 return len;
2294 }
2295
2296
2297
2298 /**
2299 * proc_read_stat()
2300 * @page - buffer to write the data in
2301 * @start - where the actual data has been written in page
2302 * @offset - same meaning as the read system call
2303 * @count - same meaning as the read system call
2304 * @eof - set if no more data needs to be returned
2305 * @data - pointer to our soft state
2306 *
2307 * Diaplay statistical information about the I/O activity.
2308 */
2309 static int
2310 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2311 void *data)
2312 {
2313 adapter_t *adapter;
2314 int len;
2315 int i;
2316
2317 i = 0; /* avoid compilation warnings */
2318 len = 0;
2319 adapter = (adapter_t *)data;
2320
2321 len = sprintf(page, "Statistical Information for this controller\n");
2322 len += sprintf(page+len, "pend_cmds = %d\n",
2323 atomic_read(&adapter->pend_cmds));
2324 #if MEGA_HAVE_STATS
2325 for(i = 0; i < adapter->numldrv; i++) {
2326 len += sprintf(page+len, "Logical Drive %d:\n", i);
2327
2328 len += sprintf(page+len,
2329 "\tReads Issued = %lu, Writes Issued = %lu\n",
2330 adapter->nreads[i], adapter->nwrites[i]);
2331
2332 len += sprintf(page+len,
2333 "\tSectors Read = %lu, Sectors Written = %lu\n",
2334 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2335
2336 len += sprintf(page+len,
2337 "\tRead errors = %lu, Write errors = %lu\n\n",
2338 adapter->rd_errors[i], adapter->wr_errors[i]);
2339 }
2340 #else
2341 len += sprintf(page+len,
2342 "IO and error counters not compiled in driver.\n");
2343 #endif
2344
2345 *eof = 1;
2346
2347 return len;
2348 }
2349
2350
2351 /**
2352 * proc_read_mbox()
2353 * @page - buffer to write the data in
2354 * @start - where the actual data has been written in page
2355 * @offset - same meaning as the read system call
2356 * @count - same meaning as the read system call
2357 * @eof - set if no more data needs to be returned
2358 * @data - pointer to our soft state
2359 *
2360 * Display mailbox information for the last command issued. This information
2361 * is good for debugging.
2362 */
2363 static int
2364 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2365 void *data)
2366 {
2367
2368 adapter_t *adapter = (adapter_t *)data;
2369 volatile mbox_t *mbox = adapter->mbox;
2370 int len = 0;
2371
2372 len = sprintf(page, "Contents of Mail Box Structure\n");
2373 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2374 mbox->m_out.cmd);
2375 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2376 mbox->m_out.cmdid);
2377 len += sprintf(page+len, " No of Sectors= %04d\n",
2378 mbox->m_out.numsectors);
2379 len += sprintf(page+len, " LBA = 0x%02x\n",
2380 mbox->m_out.lba);
2381 len += sprintf(page+len, " DTA = 0x%08x\n",
2382 mbox->m_out.xferaddr);
2383 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2384 mbox->m_out.logdrv);
2385 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2386 mbox->m_out.numsgelements);
2387 len += sprintf(page+len, " Busy = %01x\n",
2388 mbox->m_in.busy);
2389 len += sprintf(page+len, " Status = 0x%02x\n",
2390 mbox->m_in.status);
2391
2392 *eof = 1;
2393
2394 return len;
2395 }
2396
2397
2398 /**
2399 * proc_rebuild_rate()
2400 * @page - buffer to write the data in
2401 * @start - where the actual data has been written in page
2402 * @offset - same meaning as the read system call
2403 * @count - same meaning as the read system call
2404 * @eof - set if no more data needs to be returned
2405 * @data - pointer to our soft state
2406 *
2407 * Display current rebuild rate
2408 */
2409 static int
2410 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2411 void *data)
2412 {
2413 adapter_t *adapter = (adapter_t *)data;
2414 dma_addr_t dma_handle;
2415 caddr_t inquiry;
2416 struct pci_dev *pdev;
2417 int len = 0;
2418
2419 if( make_local_pdev(adapter, &pdev) != 0 ) {
2420 *eof = 1;
2421 return len;
2422 }
2423
2424 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2425 free_local_pdev(pdev);
2426 *eof = 1;
2427 return len;
2428 }
2429
2430 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2431
2432 len = sprintf(page, "Adapter inquiry failed.\n");
2433
2434 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2435
2436 mega_free_inquiry(inquiry, dma_handle, pdev);
2437
2438 free_local_pdev(pdev);
2439
2440 *eof = 1;
2441
2442 return len;
2443 }
2444
2445 if( adapter->flag & BOARD_40LD ) {
2446 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2447 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2448 }
2449 else {
2450 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2451 ((mraid_ext_inquiry *)
2452 inquiry)->raid_inq.adapter_info.rebuild_rate);
2453 }
2454
2455
2456 mega_free_inquiry(inquiry, dma_handle, pdev);
2457
2458 free_local_pdev(pdev);
2459
2460 *eof = 1;
2461
2462 return len;
2463 }
2464
2465
2466 /**
2467 * proc_battery()
2468 * @page - buffer to write the data in
2469 * @start - where the actual data has been written in page
2470 * @offset - same meaning as the read system call
2471 * @count - same meaning as the read system call
2472 * @eof - set if no more data needs to be returned
2473 * @data - pointer to our soft state
2474 *
2475 * Display information about the battery module on the controller.
2476 */
2477 static int
2478 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2479 void *data)
2480 {
2481 adapter_t *adapter = (adapter_t *)data;
2482 dma_addr_t dma_handle;
2483 caddr_t inquiry;
2484 struct pci_dev *pdev;
2485 u8 battery_status = 0;
2486 char str[256];
2487 int len = 0;
2488
2489 if( make_local_pdev(adapter, &pdev) != 0 ) {
2490 *eof = 1;
2491 return len;
2492 }
2493
2494 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2495 free_local_pdev(pdev);
2496 *eof = 1;
2497 return len;
2498 }
2499
2500 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2501
2502 len = sprintf(page, "Adapter inquiry failed.\n");
2503
2504 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2505
2506 mega_free_inquiry(inquiry, dma_handle, pdev);
2507
2508 free_local_pdev(pdev);
2509
2510 *eof = 1;
2511
2512 return len;
2513 }
2514
2515 if( adapter->flag & BOARD_40LD ) {
2516 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2517 }
2518 else {
2519 battery_status = ((mraid_ext_inquiry *)inquiry)->
2520 raid_inq.adapter_info.battery_status;
2521 }
2522
2523 /*
2524 * Decode the battery status
2525 */
2526 sprintf(str, "Battery Status:[%d]", battery_status);
2527
2528 if(battery_status == MEGA_BATT_CHARGE_DONE)
2529 strcat(str, " Charge Done");
2530
2531 if(battery_status & MEGA_BATT_MODULE_MISSING)
2532 strcat(str, " Module Missing");
2533
2534 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2535 strcat(str, " Low Voltage");
2536
2537 if(battery_status & MEGA_BATT_TEMP_HIGH)
2538 strcat(str, " Temperature High");
2539
2540 if(battery_status & MEGA_BATT_PACK_MISSING)
2541 strcat(str, " Pack Missing");
2542
2543 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2544 strcat(str, " Charge In-progress");
2545
2546 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2547 strcat(str, " Charge Fail");
2548
2549 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2550 strcat(str, " Cycles Exceeded");
2551
2552 len = sprintf(page, "%s\n", str);
2553
2554
2555 mega_free_inquiry(inquiry, dma_handle, pdev);
2556
2557 free_local_pdev(pdev);
2558
2559 *eof = 1;
2560
2561 return len;
2562 }
2563
2564
2565 /**
2566 * proc_pdrv_ch0()
2567 * @page - buffer to write the data in
2568 * @start - where the actual data has been written in page
2569 * @offset - same meaning as the read system call
2570 * @count - same meaning as the read system call
2571 * @eof - set if no more data needs to be returned
2572 * @data - pointer to our soft state
2573 *
2574 * Display information about the physical drives on physical channel 0.
2575 */
2576 static int
2577 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2578 void *data)
2579 {
2580 adapter_t *adapter = (adapter_t *)data;
2581
2582 *eof = 1;
2583
2584 return (proc_pdrv(adapter, page, 0));
2585 }
2586
2587
2588 /**
2589 * proc_pdrv_ch1()
2590 * @page - buffer to write the data in
2591 * @start - where the actual data has been written in page
2592 * @offset - same meaning as the read system call
2593 * @count - same meaning as the read system call
2594 * @eof - set if no more data needs to be returned
2595 * @data - pointer to our soft state
2596 *
2597 * Display information about the physical drives on physical channel 1.
2598 */
2599 static int
2600 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2601 void *data)
2602 {
2603 adapter_t *adapter = (adapter_t *)data;
2604
2605 *eof = 1;
2606
2607 return (proc_pdrv(adapter, page, 1));
2608 }
2609
2610
2611 /**
2612 * proc_pdrv_ch2()
2613 * @page - buffer to write the data in
2614 * @start - where the actual data has been written in page
2615 * @offset - same meaning as the read system call
2616 * @count - same meaning as the read system call
2617 * @eof - set if no more data needs to be returned
2618 * @data - pointer to our soft state
2619 *
2620 * Display information about the physical drives on physical channel 2.
2621 */
2622 static int
2623 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2624 void *data)
2625 {
2626 adapter_t *adapter = (adapter_t *)data;
2627
2628 *eof = 1;
2629
2630 return (proc_pdrv(adapter, page, 2));
2631 }
2632
2633
2634 /**
2635 * proc_pdrv_ch3()
2636 * @page - buffer to write the data in
2637 * @start - where the actual data has been written in page
2638 * @offset - same meaning as the read system call
2639 * @count - same meaning as the read system call
2640 * @eof - set if no more data needs to be returned
2641 * @data - pointer to our soft state
2642 *
2643 * Display information about the physical drives on physical channel 3.
2644 */
2645 static int
2646 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2647 void *data)
2648 {
2649 adapter_t *adapter = (adapter_t *)data;
2650
2651 *eof = 1;
2652
2653 return (proc_pdrv(adapter, page, 3));
2654 }
2655
2656
2657 /**
2658 * proc_pdrv()
2659 * @page - buffer to write the data in
2660 * @adapter - pointer to our soft state
2661 *
2662 * Display information about the physical drives.
2663 */
2664 static int
2665 proc_pdrv(adapter_t *adapter, char *page, int channel)
2666 {
2667 dma_addr_t dma_handle;
2668 char *scsi_inq;
2669 dma_addr_t scsi_inq_dma_handle;
2670 caddr_t inquiry;
2671 struct pci_dev *pdev;
2672 u8 *pdrv_state;
2673 u8 state;
2674 int tgt;
2675 int max_channels;
2676 int len = 0;
2677 char str[80];
2678 int i;
2679
2680 if( make_local_pdev(adapter, &pdev) != 0 ) {
2681 return len;
2682 }
2683
2684 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2685 goto free_pdev;
2686 }
2687
2688 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2689 len = sprintf(page, "Adapter inquiry failed.\n");
2690
2691 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2692
2693 goto free_inquiry;
2694 }
2695
2696
2697 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2698
2699 if( scsi_inq == NULL ) {
2700 len = sprintf(page, "memory not available for scsi inq.\n");
2701
2702 goto free_inquiry;
2703 }
2704
2705 if( adapter->flag & BOARD_40LD ) {
2706 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2707 }
2708 else {
2709 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2710 raid_inq.pdrv_info.pdrv_state;
2711 }
2712
2713 max_channels = adapter->product_info.nchannels;
2714
2715 if( channel >= max_channels ) {
2716 goto free_pci;
2717 }
2718
2719 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2720
2721 i = channel*16 + tgt;
2722
2723 state = *(pdrv_state + i);
2724
2725 switch( state & 0x0F ) {
2726
2727 case PDRV_ONLINE:
2728 sprintf(str,
2729 "Channel:%2d Id:%2d State: Online",
2730 channel, tgt);
2731 break;
2732
2733 case PDRV_FAILED:
2734 sprintf(str,
2735 "Channel:%2d Id:%2d State: Failed",
2736 channel, tgt);
2737 break;
2738
2739 case PDRV_RBLD:
2740 sprintf(str,
2741 "Channel:%2d Id:%2d State: Rebuild",
2742 channel, tgt);
2743 break;
2744
2745 case PDRV_HOTSPARE:
2746 sprintf(str,
2747 "Channel:%2d Id:%2d State: Hot spare",
2748 channel, tgt);
2749 break;
2750
2751 default:
2752 sprintf(str,
2753 "Channel:%2d Id:%2d State: Un-configured",
2754 channel, tgt);
2755 break;
2756
2757 }
2758
2759 /*
2760 * This interface displays inquiries for disk drives
2761 * only. Inquries for logical drives and non-disk
2762 * devices are available through /proc/scsi/scsi
2763 */
2764 memset(scsi_inq, 0, 256);
2765 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2766 scsi_inq_dma_handle) ||
2767 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2768 continue;
2769 }
2770
2771 /*
2772 * Check for overflow. We print less than 240
2773 * characters for inquiry
2774 */
2775 if( (len + 240) >= PAGE_SIZE ) break;
2776
2777 len += sprintf(page+len, "%s.\n", str);
2778
2779 len += mega_print_inquiry(page+len, scsi_inq);
2780 }
2781
2782 free_pci:
2783 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2784 free_inquiry:
2785 mega_free_inquiry(inquiry, dma_handle, pdev);
2786 free_pdev:
2787 free_local_pdev(pdev);
2788
2789 return len;
2790 }
2791
2792
2793 /*
2794 * Display scsi inquiry
2795 */
2796 static int
2797 mega_print_inquiry(char *page, char *scsi_inq)
2798 {
2799 int len = 0;
2800 int i;
2801
2802 len = sprintf(page, " Vendor: ");
2803 for( i = 8; i < 16; i++ ) {
2804 len += sprintf(page+len, "%c", scsi_inq[i]);
2805 }
2806
2807 len += sprintf(page+len, " Model: ");
2808
2809 for( i = 16; i < 32; i++ ) {
2810 len += sprintf(page+len, "%c", scsi_inq[i]);
2811 }
2812
2813 len += sprintf(page+len, " Rev: ");
2814
2815 for( i = 32; i < 36; i++ ) {
2816 len += sprintf(page+len, "%c", scsi_inq[i]);
2817 }
2818
2819 len += sprintf(page+len, "\n");
2820
2821 i = scsi_inq[0] & 0x1f;
2822
2823 len += sprintf(page+len, " Type: %s ",
2824 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2825 "Unknown ");
2826
2827 len += sprintf(page+len,
2828 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2829
2830 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2831 len += sprintf(page+len, " CCS\n");
2832 else
2833 len += sprintf(page+len, "\n");
2834
2835 return len;
2836 }
2837
2838
2839 /**
2840 * proc_rdrv_10()
2841 * @page - buffer to write the data in
2842 * @start - where the actual data has been written in page
2843 * @offset - same meaning as the read system call
2844 * @count - same meaning as the read system call
2845 * @eof - set if no more data needs to be returned
2846 * @data - pointer to our soft state
2847 *
2848 * Display real time information about the logical drives 0 through 9.
2849 */
2850 static int
2851 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2852 void *data)
2853 {
2854 adapter_t *adapter = (adapter_t *)data;
2855
2856 *eof = 1;
2857
2858 return (proc_rdrv(adapter, page, 0, 9));
2859 }
2860
2861
2862 /**
2863 * proc_rdrv_20()
2864 * @page - buffer to write the data in
2865 * @start - where the actual data has been written in page
2866 * @offset - same meaning as the read system call
2867 * @count - same meaning as the read system call
2868 * @eof - set if no more data needs to be returned
2869 * @data - pointer to our soft state
2870 *
2871 * Display real time information about the logical drives 0 through 9.
2872 */
2873 static int
2874 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2875 void *data)
2876 {
2877 adapter_t *adapter = (adapter_t *)data;
2878
2879 *eof = 1;
2880
2881 return (proc_rdrv(adapter, page, 10, 19));
2882 }
2883
2884
2885 /**
2886 * proc_rdrv_30()
2887 * @page - buffer to write the data in
2888 * @start - where the actual data has been written in page
2889 * @offset - same meaning as the read system call
2890 * @count - same meaning as the read system call
2891 * @eof - set if no more data needs to be returned
2892 * @data - pointer to our soft state
2893 *
2894 * Display real time information about the logical drives 0 through 9.
2895 */
2896 static int
2897 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2898 void *data)
2899 {
2900 adapter_t *adapter = (adapter_t *)data;
2901
2902 *eof = 1;
2903
2904 return (proc_rdrv(adapter, page, 20, 29));
2905 }
2906
2907
2908 /**
2909 * proc_rdrv_40()
2910 * @page - buffer to write the data in
2911 * @start - where the actual data has been written in page
2912 * @offset - same meaning as the read system call
2913 * @count - same meaning as the read system call
2914 * @eof - set if no more data needs to be returned
2915 * @data - pointer to our soft state
2916 *
2917 * Display real time information about the logical drives 0 through 9.
2918 */
2919 static int
2920 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2921 void *data)
2922 {
2923 adapter_t *adapter = (adapter_t *)data;
2924
2925 *eof = 1;
2926
2927 return (proc_rdrv(adapter, page, 30, 39));
2928 }
2929
2930
2931 /**
2932 * proc_rdrv()
2933 * @page - buffer to write the data in
2934 * @adapter - pointer to our soft state
2935 * @start - starting logical drive to display
2936 * @end - ending logical drive to display
2937 *
2938 * We do not print the inquiry information since its already available through
2939 * /proc/scsi/scsi interface
2940 */
2941 static int
2942 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2943 {
2944 dma_addr_t dma_handle;
2945 logdrv_param *lparam;
2946 megacmd_t mc;
2947 char *disk_array;
2948 dma_addr_t disk_array_dma_handle;
2949 caddr_t inquiry;
2950 struct pci_dev *pdev;
2951 u8 *rdrv_state;
2952 int num_ldrv;
2953 u32 array_sz;
2954 int len = 0;
2955 int i;
2956
2957 if( make_local_pdev(adapter, &pdev) != 0 ) {
2958 return len;
2959 }
2960
2961 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2962 free_local_pdev(pdev);
2963 return len;
2964 }
2965
2966 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2967
2968 len = sprintf(page, "Adapter inquiry failed.\n");
2969
2970 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2971
2972 mega_free_inquiry(inquiry, dma_handle, pdev);
2973
2974 free_local_pdev(pdev);
2975
2976 return len;
2977 }
2978
2979 memset(&mc, 0, sizeof(megacmd_t));
2980
2981 if( adapter->flag & BOARD_40LD ) {
2982 array_sz = sizeof(disk_array_40ld);
2983
2984 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2985
2986 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2987 }
2988 else {
2989 array_sz = sizeof(disk_array_8ld);
2990
2991 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2992 raid_inq.logdrv_info.ldrv_state;
2993
2994 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2995 raid_inq.logdrv_info.num_ldrv;
2996 }
2997
2998 disk_array = pci_alloc_consistent(pdev, array_sz,
2999 &disk_array_dma_handle);
3000
3001 if( disk_array == NULL ) {
3002 len = sprintf(page, "memory not available.\n");
3003
3004 mega_free_inquiry(inquiry, dma_handle, pdev);
3005
3006 free_local_pdev(pdev);
3007
3008 return len;
3009 }
3010
3011 mc.xferaddr = (u32)disk_array_dma_handle;
3012
3013 if( adapter->flag & BOARD_40LD ) {
3014 mc.cmd = FC_NEW_CONFIG;
3015 mc.opcode = OP_DCMD_READ_CONFIG;
3016
3017 if( mega_internal_command(adapter, &mc, NULL) ) {
3018
3019 len = sprintf(page, "40LD read config failed.\n");
3020
3021 mega_free_inquiry(inquiry, dma_handle, pdev);
3022
3023 pci_free_consistent(pdev, array_sz, disk_array,
3024 disk_array_dma_handle);
3025
3026 free_local_pdev(pdev);
3027
3028 return len;
3029 }
3030
3031 }
3032 else {
3033 mc.cmd = NEW_READ_CONFIG_8LD;
3034
3035 if( mega_internal_command(adapter, &mc, NULL) ) {
3036
3037 mc.cmd = READ_CONFIG_8LD;
3038
3039 if( mega_internal_command(adapter, &mc,
3040 NULL) ){
3041
3042 len = sprintf(page,
3043 "8LD read config failed.\n");
3044
3045 mega_free_inquiry(inquiry, dma_handle, pdev);
3046
3047 pci_free_consistent(pdev, array_sz,
3048 disk_array,
3049 disk_array_dma_handle);
3050
3051 free_local_pdev(pdev);
3052
3053 return len;
3054 }
3055 }
3056 }
3057
3058 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3059
3060 if( adapter->flag & BOARD_40LD ) {
3061 lparam =
3062 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3063 }
3064 else {
3065 lparam =
3066 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3067 }
3068
3069 /*
3070 * Check for overflow. We print less than 240 characters for
3071 * information about each logical drive.
3072 */
3073 if( (len + 240) >= PAGE_SIZE ) break;
3074
3075 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3076
3077 switch( rdrv_state[i] & 0x0F ) {
3078 case RDRV_OFFLINE:
3079 len += sprintf(page+len, "state: offline");
3080 break;
3081
3082 case RDRV_DEGRADED:
3083 len += sprintf(page+len, "state: degraded");
3084 break;
3085
3086 case RDRV_OPTIMAL:
3087 len += sprintf(page+len, "state: optimal");
3088 break;
3089
3090 case RDRV_DELETED:
3091 len += sprintf(page+len, "state: deleted");
3092 break;
3093
3094 default:
3095 len += sprintf(page+len, "state: unknown");
3096 break;
3097 }
3098
3099 /*
3100 * Check if check consistency or initialization is going on
3101 * for this logical drive.
3102 */
3103 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3104 len += sprintf(page+len,
3105 ", check-consistency in progress");
3106 }
3107 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3108 len += sprintf(page+len,
3109 ", initialization in progress");
3110 }
3111
3112 len += sprintf(page+len, "\n");
3113
3114 len += sprintf(page+len, "Span depth:%3d, ",
3115 lparam->span_depth);
3116
3117 len += sprintf(page+len, "RAID level:%3d, ",
3118 lparam->level);
3119
3120 len += sprintf(page+len, "Stripe size:%3d, ",
3121 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3122
3123 len += sprintf(page+len, "Row size:%3d\n",
3124 lparam->row_size);
3125
3126
3127 len += sprintf(page+len, "Read Policy: ");
3128
3129 switch(lparam->read_ahead) {
3130
3131 case NO_READ_AHEAD:
3132 len += sprintf(page+len, "No read ahead, ");
3133 break;
3134
3135 case READ_AHEAD:
3136 len += sprintf(page+len, "Read ahead, ");
3137 break;
3138
3139 case ADAP_READ_AHEAD:
3140 len += sprintf(page+len, "Adaptive, ");
3141 break;
3142
3143 }
3144
3145 len += sprintf(page+len, "Write Policy: ");
3146
3147 switch(lparam->write_mode) {
3148
3149 case WRMODE_WRITE_THRU:
3150 len += sprintf(page+len, "Write thru, ");
3151 break;
3152
3153 case WRMODE_WRITE_BACK:
3154 len += sprintf(page+len, "Write back, ");
3155 break;
3156 }
3157
3158 len += sprintf(page+len, "Cache Policy: ");
3159
3160 switch(lparam->direct_io) {
3161
3162 case CACHED_IO:
3163 len += sprintf(page+len, "Cached IO\n\n");
3164 break;
3165
3166 case DIRECT_IO:
3167 len += sprintf(page+len, "Direct IO\n\n");
3168 break;
3169 }
3170 }
3171
3172 mega_free_inquiry(inquiry, dma_handle, pdev);
3173
3174 pci_free_consistent(pdev, array_sz, disk_array,
3175 disk_array_dma_handle);
3176
3177 free_local_pdev(pdev);
3178
3179 return len;
3180 }
3181
3182 #endif
3183
3184
3185 /**
3186 * megaraid_biosparam()
3187 *
3188 * Return the disk geometry for a particular disk
3189 */
3190 static int
3191 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3192 sector_t capacity, int geom[])
3193 {
3194 adapter_t *adapter;
3195 unsigned char *bh;
3196 int heads;
3197 int sectors;
3198 int cylinders;
3199 int rval;
3200
3201 /* Get pointer to host config structure */
3202 adapter = (adapter_t *)sdev->host->hostdata;
3203
3204 if (IS_RAID_CH(adapter, sdev->channel)) {
3205 /* Default heads (64) & sectors (32) */
3206 heads = 64;
3207 sectors = 32;
3208 cylinders = (ulong)capacity / (heads * sectors);
3209
3210 /*
3211 * Handle extended translation size for logical drives
3212 * > 1Gb
3213 */
3214 if ((ulong)capacity >= 0x200000) {
3215 heads = 255;
3216 sectors = 63;
3217 cylinders = (ulong)capacity / (heads * sectors);
3218 }
3219
3220 /* return result */
3221 geom[0] = heads;
3222 geom[1] = sectors;
3223 geom[2] = cylinders;
3224 }
3225 else {
3226 bh = scsi_bios_ptable(bdev);
3227
3228 if( bh ) {
3229 rval = scsi_partsize(bh, capacity,
3230 &geom[2], &geom[0], &geom[1]);
3231 kfree(bh);
3232 if( rval != -1 )
3233 return rval;
3234 }
3235
3236 printk(KERN_INFO
3237 "megaraid: invalid partition on this disk on channel %d\n",
3238 sdev->channel);
3239
3240 /* Default heads (64) & sectors (32) */
3241 heads = 64;
3242 sectors = 32;
3243 cylinders = (ulong)capacity / (heads * sectors);
3244
3245 /* Handle extended translation size for logical drives > 1Gb */
3246 if ((ulong)capacity >= 0x200000) {
3247 heads = 255;
3248 sectors = 63;
3249 cylinders = (ulong)capacity / (heads * sectors);
3250 }
3251
3252 /* return result */
3253 geom[0] = heads;
3254 geom[1] = sectors;
3255 geom[2] = cylinders;
3256 }
3257
3258 return 0;
3259 }
3260
3261 /**
3262 * mega_init_scb()
3263 * @adapter - pointer to our soft state
3264 *
3265 * Allocate memory for the various pointers in the scb structures:
3266 * scatter-gather list pointer, passthru and extended passthru structure
3267 * pointers.
3268 */
3269 static int
3270 mega_init_scb(adapter_t *adapter)
3271 {
3272 scb_t *scb;
3273 int i;
3274
3275 for( i = 0; i < adapter->max_cmds; i++ ) {
3276
3277 scb = &adapter->scb_list[i];
3278
3279 scb->sgl64 = NULL;
3280 scb->sgl = NULL;
3281 scb->pthru = NULL;
3282 scb->epthru = NULL;
3283 }
3284
3285 for( i = 0; i < adapter->max_cmds; i++ ) {
3286
3287 scb = &adapter->scb_list[i];
3288
3289 scb->idx = i;
3290
3291 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3292 sizeof(mega_sgl64) * adapter->sglen,
3293 &scb->sgl_dma_addr);
3294
3295 scb->sgl = (mega_sglist *)scb->sgl64;
3296
3297 if( !scb->sgl ) {
3298 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3299 mega_free_sgl(adapter);
3300 return -1;
3301 }
3302
3303 scb->pthru = pci_alloc_consistent(adapter->dev,
3304 sizeof(mega_passthru),
3305 &scb->pthru_dma_addr);
3306
3307 if( !scb->pthru ) {
3308 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3309 mega_free_sgl(adapter);
3310 return -1;
3311 }
3312
3313 scb->epthru = pci_alloc_consistent(adapter->dev,
3314 sizeof(mega_ext_passthru),
3315 &scb->epthru_dma_addr);
3316
3317 if( !scb->epthru ) {
3318 printk(KERN_WARNING
3319 "Can't allocate extended passthru.\n");
3320 mega_free_sgl(adapter);
3321 return -1;
3322 }
3323
3324
3325 scb->dma_type = MEGA_DMA_TYPE_NONE;
3326
3327 /*
3328 * Link to free list
3329 * lock not required since we are loading the driver, so no
3330 * commands possible right now.
3331 */
3332 scb->state = SCB_FREE;
3333 scb->cmd = NULL;
3334 list_add(&scb->list, &adapter->free_list);
3335 }
3336
3337 return 0;
3338 }
3339
3340
3341 /**
3342 * megadev_open()
3343 * @inode - unused
3344 * @filep - unused
3345 *
3346 * Routines for the character/ioctl interface to the driver. Find out if this
3347 * is a valid open. If yes, increment the module use count so that it cannot
3348 * be unloaded.
3349 */
3350 static int
3351 megadev_open (struct inode *inode, struct file *filep)
3352 {
3353 /*
3354 * Only allow superuser to access private ioctl interface
3355 */
3356 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3357
3358 return 0;
3359 }
3360
3361
3362 /**
3363 * megadev_ioctl()
3364 * @inode - Our device inode
3365 * @filep - unused
3366 * @cmd - ioctl command
3367 * @arg - user buffer
3368 *
3369 * ioctl entry point for our private ioctl interface. We move the data in from
3370 * the user space, prepare the command (if necessary, convert the old MIMD
3371 * ioctl to new ioctl command), and issue a synchronous command to the
3372 * controller.
3373 */
3374 static int
3375 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3376 unsigned long arg)
3377 {
3378 adapter_t *adapter;
3379 nitioctl_t uioc;
3380 int adapno;
3381 int rval;
3382 mega_passthru __user *upthru; /* user address for passthru */
3383 mega_passthru *pthru; /* copy user passthru here */
3384 dma_addr_t pthru_dma_hndl;
3385 void *data = NULL; /* data to be transferred */
3386 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3387 megacmd_t mc;
3388 megastat_t __user *ustats;
3389 int num_ldrv;
3390 u32 uxferaddr = 0;
3391 struct pci_dev *pdev;
3392
3393 ustats = NULL; /* avoid compilation warnings */
3394 num_ldrv = 0;
3395
3396 /*
3397 * Make sure only USCSICMD are issued through this interface.
3398 * MIMD application would still fire different command.
3399 */
3400 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3401 return -EINVAL;
3402 }
3403
3404 /*
3405 * Check and convert a possible MIMD command to NIT command.
3406 * mega_m_to_n() copies the data from the user space, so we do not
3407 * have to do it here.
3408 * NOTE: We will need some user address to copyout the data, therefore
3409 * the inteface layer will also provide us with the required user
3410 * addresses.
3411 */
3412 memset(&uioc, 0, sizeof(nitioctl_t));
3413 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3414 return rval;
3415
3416
3417 switch( uioc.opcode ) {
3418
3419 case GET_DRIVER_VER:
3420 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3421 return (-EFAULT);
3422
3423 break;
3424
3425 case GET_N_ADAP:
3426 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3427 return (-EFAULT);
3428
3429 /*
3430 * Shucks. MIMD interface returns a positive value for number
3431 * of adapters. TODO: Change it to return 0 when there is no
3432 * applicatio using mimd interface.
3433 */
3434 return hba_count;
3435
3436 case GET_ADAP_INFO:
3437
3438 /*
3439 * Which adapter
3440 */
3441 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3442 return (-ENODEV);
3443
3444 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3445 sizeof(struct mcontroller)) )
3446 return (-EFAULT);
3447 break;
3448
3449 #if MEGA_HAVE_STATS
3450
3451 case GET_STATS:
3452 /*
3453 * Which adapter
3454 */
3455 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3456 return (-ENODEV);
3457
3458 adapter = hba_soft_state[adapno];
3459
3460 ustats = uioc.uioc_uaddr;
3461
3462 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3463 return (-EFAULT);
3464
3465 /*
3466 * Check for the validity of the logical drive number
3467 */
3468 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3469
3470 if( copy_to_user(ustats->nreads, adapter->nreads,
3471 num_ldrv*sizeof(u32)) )
3472 return -EFAULT;
3473
3474 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3475 num_ldrv*sizeof(u32)) )
3476 return -EFAULT;
3477
3478 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3479 num_ldrv*sizeof(u32)) )
3480 return -EFAULT;
3481
3482 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3483 num_ldrv*sizeof(u32)) )
3484 return -EFAULT;
3485
3486 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3487 num_ldrv*sizeof(u32)) )
3488 return -EFAULT;
3489
3490 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3491 num_ldrv*sizeof(u32)) )
3492 return -EFAULT;
3493
3494 return 0;
3495
3496 #endif
3497 case MBOX_CMD:
3498
3499 /*
3500 * Which adapter
3501 */
3502 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3503 return (-ENODEV);
3504
3505 adapter = hba_soft_state[adapno];
3506
3507 /*
3508 * Deletion of logical drive is a special case. The adapter
3509 * should be quiescent before this command is issued.
3510 */
3511 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3512 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3513
3514 /*
3515 * Do we support this feature
3516 */
3517 if( !adapter->support_random_del ) {
3518 printk(KERN_WARNING "megaraid: logdrv ");
3519 printk("delete on non-supporting F/W.\n");
3520
3521 return (-EINVAL);
3522 }
3523
3524 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3525
3526 if( rval == 0 ) {
3527 memset(&mc, 0, sizeof(megacmd_t));
3528
3529 mc.status = rval;
3530
3531 rval = mega_n_to_m((void __user *)arg, &mc);
3532 }
3533
3534 return rval;
3535 }
3536 /*
3537 * This interface only support the regular passthru commands.
3538 * Reject extended passthru and 64-bit passthru
3539 */
3540 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3541 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3542
3543 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3544
3545 return (-EINVAL);
3546 }
3547
3548 /*
3549 * For all internal commands, the buffer must be allocated in
3550 * <4GB address range
3551 */
3552 if( make_local_pdev(adapter, &pdev) != 0 )
3553 return -EIO;
3554
3555 /* Is it a passthru command or a DCMD */
3556 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3557 /* Passthru commands */
3558
3559 pthru = pci_alloc_consistent(pdev,
3560 sizeof(mega_passthru),
3561 &pthru_dma_hndl);
3562
3563 if( pthru == NULL ) {
3564 free_local_pdev(pdev);
3565 return (-ENOMEM);
3566 }
3567
3568 /*
3569 * The user passthru structure
3570 */
3571 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3572
3573 /*
3574 * Copy in the user passthru here.
3575 */
3576 if( copy_from_user(pthru, upthru,
3577 sizeof(mega_passthru)) ) {
3578
3579 pci_free_consistent(pdev,
3580 sizeof(mega_passthru), pthru,
3581 pthru_dma_hndl);
3582
3583 free_local_pdev(pdev);
3584
3585 return (-EFAULT);
3586 }
3587
3588 /*
3589 * Is there a data transfer
3590 */
3591 if( pthru->dataxferlen ) {
3592 data = pci_alloc_consistent(pdev,
3593 pthru->dataxferlen,
3594 &data_dma_hndl);
3595
3596 if( data == NULL ) {
3597 pci_free_consistent(pdev,
3598 sizeof(mega_passthru),
3599 pthru,
3600 pthru_dma_hndl);
3601
3602 free_local_pdev(pdev);
3603
3604 return (-ENOMEM);
3605 }
3606
3607 /*
3608 * Save the user address and point the kernel
3609 * address at just allocated memory
3610 */
3611 uxferaddr = pthru->dataxferaddr;
3612 pthru->dataxferaddr = data_dma_hndl;
3613 }
3614
3615
3616 /*
3617 * Is data coming down-stream
3618 */
3619 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3620 /*
3621 * Get the user data
3622 */
3623 if( copy_from_user(data, (char __user *)uxferaddr,
3624 pthru->dataxferlen) ) {
3625 rval = (-EFAULT);
3626 goto freemem_and_return;
3627 }
3628 }
3629
3630 memset(&mc, 0, sizeof(megacmd_t));
3631
3632 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3633 mc.xferaddr = (u32)pthru_dma_hndl;
3634
3635 /*
3636 * Issue the command
3637 */
3638 mega_internal_command(adapter, &mc, pthru);
3639
3640 rval = mega_n_to_m((void __user *)arg, &mc);
3641
3642 if( rval ) goto freemem_and_return;
3643
3644
3645 /*
3646 * Is data going up-stream
3647 */
3648 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3649 if( copy_to_user((char __user *)uxferaddr, data,
3650 pthru->dataxferlen) ) {
3651 rval = (-EFAULT);
3652 }
3653 }
3654
3655 /*
3656 * Send the request sense data also, irrespective of
3657 * whether the user has asked for it or not.
3658 */
3659 copy_to_user(upthru->reqsensearea,
3660 pthru->reqsensearea, 14);
3661
3662 freemem_and_return:
3663 if( pthru->dataxferlen ) {
3664 pci_free_consistent(pdev,
3665 pthru->dataxferlen, data,
3666 data_dma_hndl);
3667 }
3668
3669 pci_free_consistent(pdev, sizeof(mega_passthru),
3670 pthru, pthru_dma_hndl);
3671
3672 free_local_pdev(pdev);
3673
3674 return rval;
3675 }
3676 else {
3677 /* DCMD commands */
3678
3679 /*
3680 * Is there a data transfer
3681 */
3682 if( uioc.xferlen ) {
3683 data = pci_alloc_consistent(pdev,
3684 uioc.xferlen, &data_dma_hndl);
3685
3686 if( data == NULL ) {
3687 free_local_pdev(pdev);
3688 return (-ENOMEM);
3689 }
3690
3691 uxferaddr = MBOX(uioc)->xferaddr;
3692 }
3693
3694 /*
3695 * Is data coming down-stream
3696 */
3697 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3698 /*
3699 * Get the user data
3700 */
3701 if( copy_from_user(data, (char __user *)uxferaddr,
3702 uioc.xferlen) ) {
3703
3704 pci_free_consistent(pdev,
3705 uioc.xferlen,
3706 data, data_dma_hndl);
3707
3708 free_local_pdev(pdev);
3709
3710 return (-EFAULT);
3711 }
3712 }
3713
3714 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3715
3716 mc.xferaddr = (u32)data_dma_hndl;
3717
3718 /*
3719 * Issue the command
3720 */
3721 mega_internal_command(adapter, &mc, NULL);
3722
3723 rval = mega_n_to_m((void __user *)arg, &mc);
3724
3725 if( rval ) {
3726 if( uioc.xferlen ) {
3727 pci_free_consistent(pdev,
3728 uioc.xferlen, data,
3729 data_dma_hndl);
3730 }
3731
3732 free_local_pdev(pdev);
3733
3734 return rval;
3735 }
3736
3737 /*
3738 * Is data going up-stream
3739 */
3740 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3741 if( copy_to_user((char __user *)uxferaddr, data,
3742 uioc.xferlen) ) {
3743
3744 rval = (-EFAULT);
3745 }
3746 }
3747
3748 if( uioc.xferlen ) {
3749 pci_free_consistent(pdev,
3750 uioc.xferlen, data,
3751 data_dma_hndl);
3752 }
3753
3754 free_local_pdev(pdev);
3755
3756 return rval;
3757 }
3758
3759 default:
3760 return (-EINVAL);
3761 }
3762
3763 return 0;
3764 }
3765
3766 /**
3767 * mega_m_to_n()
3768 * @arg - user address
3769 * @uioc - new ioctl structure
3770 *
3771 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3772 * structure
3773 *
3774 * Converts the older mimd ioctl structure to newer NIT structure
3775 */
3776 static int
3777 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3778 {
3779 struct uioctl_t uioc_mimd;
3780 char signature[8] = {0};
3781 u8 opcode;
3782 u8 subopcode;
3783
3784
3785 /*
3786 * check is the application conforms to NIT. We do not have to do much
3787 * in that case.
3788 * We exploit the fact that the signature is stored in the very
3789 * begining of the structure.
3790 */
3791
3792 if( copy_from_user(signature, arg, 7) )
3793 return (-EFAULT);
3794
3795 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3796
3797 /*
3798 * NOTE NOTE: The nit ioctl is still under flux because of
3799 * change of mailbox definition, in HPE. No applications yet
3800 * use this interface and let's not have applications use this
3801 * interface till the new specifitions are in place.
3802 */
3803 return -EINVAL;
3804 #if 0
3805 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3806 return (-EFAULT);
3807 return 0;
3808 #endif
3809 }
3810
3811 /*
3812 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3813 *
3814 * Get the user ioctl structure
3815 */
3816 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3817 return (-EFAULT);
3818
3819
3820 /*
3821 * Get the opcode and subopcode for the commands
3822 */
3823 opcode = uioc_mimd.ui.fcs.opcode;
3824 subopcode = uioc_mimd.ui.fcs.subopcode;
3825
3826 switch (opcode) {
3827 case 0x82:
3828
3829 switch (subopcode) {
3830
3831 case MEGAIOC_QDRVRVER: /* Query driver version */
3832 uioc->opcode = GET_DRIVER_VER;
3833 uioc->uioc_uaddr = uioc_mimd.data;
3834 break;
3835
3836 case MEGAIOC_QNADAP: /* Get # of adapters */
3837 uioc->opcode = GET_N_ADAP;
3838 uioc->uioc_uaddr = uioc_mimd.data;
3839 break;
3840
3841 case MEGAIOC_QADAPINFO: /* Get adapter information */
3842 uioc->opcode = GET_ADAP_INFO;
3843 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3844 uioc->uioc_uaddr = uioc_mimd.data;
3845 break;
3846
3847 default:
3848 return(-EINVAL);
3849 }
3850
3851 break;
3852
3853
3854 case 0x81:
3855
3856 uioc->opcode = MBOX_CMD;
3857 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3858
3859 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3860
3861 uioc->xferlen = uioc_mimd.ui.fcs.length;
3862
3863 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3864 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3865
3866 break;
3867
3868 case 0x80:
3869
3870 uioc->opcode = MBOX_CMD;
3871 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3872
3873 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3874
3875 /*
3876 * Choose the xferlen bigger of input and output data
3877 */
3878 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3879 uioc_mimd.outlen : uioc_mimd.inlen;
3880
3881 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3882 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3883
3884 break;
3885
3886 default:
3887 return (-EINVAL);
3888
3889 }
3890
3891 return 0;
3892 }
3893
3894 /*
3895 * mega_n_to_m()
3896 * @arg - user address
3897 * @mc - mailbox command
3898 *
3899 * Updates the status information to the application, depending on application
3900 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3901 */
3902 static int
3903 mega_n_to_m(void __user *arg, megacmd_t *mc)
3904 {
3905 nitioctl_t __user *uiocp;
3906 megacmd_t __user *umc;
3907 mega_passthru __user *upthru;
3908 struct uioctl_t __user *uioc_mimd;
3909 char signature[8] = {0};
3910
3911 /*
3912 * check is the application conforms to NIT.
3913 */
3914 if( copy_from_user(signature, arg, 7) )
3915 return -EFAULT;
3916
3917 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3918
3919 uiocp = arg;
3920
3921 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3922 return (-EFAULT);
3923
3924 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3925
3926 umc = MBOX_P(uiocp);
3927
3928 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3929 return -EFAULT;
3930
3931 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3932 return (-EFAULT);
3933 }
3934 }
3935 else {
3936 uioc_mimd = arg;
3937
3938 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3939 return (-EFAULT);
3940
3941 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3942
3943 umc = (megacmd_t __user *)uioc_mimd->mbox;
3944
3945 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3946 return (-EFAULT);
3947
3948 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3949 return (-EFAULT);
3950 }
3951 }
3952
3953 return 0;
3954 }
3955
3956
3957 /*
3958 * MEGARAID 'FW' commands.
3959 */
3960
3961 /**
3962 * mega_is_bios_enabled()
3963 * @adapter - pointer to our soft state
3964 *
3965 * issue command to find out if the BIOS is enabled for this controller
3966 */
3967 static int
3968 mega_is_bios_enabled(adapter_t *adapter)
3969 {
3970 unsigned char raw_mbox[sizeof(struct mbox_out)];
3971 mbox_t *mbox;
3972 int ret;
3973
3974 mbox = (mbox_t *)raw_mbox;
3975
3976 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3977
3978 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3979
3980 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3981
3982 raw_mbox[0] = IS_BIOS_ENABLED;
3983 raw_mbox[2] = GET_BIOS;
3984
3985
3986 ret = issue_scb_block(adapter, raw_mbox);
3987
3988 return *(char *)adapter->mega_buffer;
3989 }
3990
3991
3992 /**
3993 * mega_enum_raid_scsi()
3994 * @adapter - pointer to our soft state
3995 *
3996 * Find out what channels are RAID/SCSI. This information is used to
3997 * differentiate the virtual channels and physical channels and to support
3998 * ROMB feature and non-disk devices.
3999 */
4000 static void
4001 mega_enum_raid_scsi(adapter_t *adapter)
4002 {
4003 unsigned char raw_mbox[sizeof(struct mbox_out)];
4004 mbox_t *mbox;
4005 int i;
4006
4007 mbox = (mbox_t *)raw_mbox;
4008
4009 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4010
4011 /*
4012 * issue command to find out what channels are raid/scsi
4013 */
4014 raw_mbox[0] = CHNL_CLASS;
4015 raw_mbox[2] = GET_CHNL_CLASS;
4016
4017 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4018
4019 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4020
4021 /*
4022 * Non-ROMB firmware fail this command, so all channels
4023 * must be shown RAID
4024 */
4025 adapter->mega_ch_class = 0xFF;
4026
4027 if(!issue_scb_block(adapter, raw_mbox)) {
4028 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4029
4030 }
4031
4032 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4033 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4034 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4035 i);
4036 }
4037 else {
4038 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4039 i);
4040 }
4041 }
4042
4043 return;
4044 }
4045
4046
4047 /**
4048 * mega_get_boot_drv()
4049 * @adapter - pointer to our soft state
4050 *
4051 * Find out which device is the boot device. Note, any logical drive or any
4052 * phyical device (e.g., a CDROM) can be designated as a boot device.
4053 */
4054 static void
4055 mega_get_boot_drv(adapter_t *adapter)
4056 {
4057 struct private_bios_data *prv_bios_data;
4058 unsigned char raw_mbox[sizeof(struct mbox_out)];
4059 mbox_t *mbox;
4060 u16 cksum = 0;
4061 u8 *cksum_p;
4062 u8 boot_pdrv;
4063 int i;
4064
4065 mbox = (mbox_t *)raw_mbox;
4066
4067 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4068
4069 raw_mbox[0] = BIOS_PVT_DATA;
4070 raw_mbox[2] = GET_BIOS_PVT_DATA;
4071
4072 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4073
4074 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4075
4076 adapter->boot_ldrv_enabled = 0;
4077 adapter->boot_ldrv = 0;
4078
4079 adapter->boot_pdrv_enabled = 0;
4080 adapter->boot_pdrv_ch = 0;
4081 adapter->boot_pdrv_tgt = 0;
4082
4083 if(issue_scb_block(adapter, raw_mbox) == 0) {
4084 prv_bios_data =
4085 (struct private_bios_data *)adapter->mega_buffer;
4086
4087 cksum = 0;
4088 cksum_p = (char *)prv_bios_data;
4089 for (i = 0; i < 14; i++ ) {
4090 cksum += (u16)(*cksum_p++);
4091 }
4092
4093 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4094
4095 /*
4096 * If MSB is set, a physical drive is set as boot
4097 * device
4098 */
4099 if( prv_bios_data->boot_drv & 0x80 ) {
4100 adapter->boot_pdrv_enabled = 1;
4101 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4102 adapter->boot_pdrv_ch = boot_pdrv / 16;
4103 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4104 }
4105 else {
4106 adapter->boot_ldrv_enabled = 1;
4107 adapter->boot_ldrv = prv_bios_data->boot_drv;
4108 }
4109 }
4110 }
4111
4112 }
4113
4114 /**
4115 * mega_support_random_del()
4116 * @adapter - pointer to our soft state
4117 *
4118 * Find out if this controller supports random deletion and addition of
4119 * logical drives
4120 */
4121 static int
4122 mega_support_random_del(adapter_t *adapter)
4123 {
4124 unsigned char raw_mbox[sizeof(struct mbox_out)];
4125 mbox_t *mbox;
4126 int rval;
4127
4128 mbox = (mbox_t *)raw_mbox;
4129
4130 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4131
4132 /*
4133 * issue command
4134 */
4135 raw_mbox[0] = FC_DEL_LOGDRV;
4136 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4137
4138 rval = issue_scb_block(adapter, raw_mbox);
4139
4140 return !rval;
4141 }
4142
4143
4144 /**
4145 * mega_support_ext_cdb()
4146 * @adapter - pointer to our soft state
4147 *
4148 * Find out if this firmware support cdblen > 10
4149 */
4150 static int
4151 mega_support_ext_cdb(adapter_t *adapter)
4152 {
4153 unsigned char raw_mbox[sizeof(struct mbox_out)];
4154 mbox_t *mbox;
4155 int rval;
4156
4157 mbox = (mbox_t *)raw_mbox;
4158
4159 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4160 /*
4161 * issue command to find out if controller supports extended CDBs.
4162 */
4163 raw_mbox[0] = 0xA4;
4164 raw_mbox[2] = 0x16;
4165
4166 rval = issue_scb_block(adapter, raw_mbox);
4167
4168 return !rval;
4169 }
4170
4171
4172 /**
4173 * mega_del_logdrv()
4174 * @adapter - pointer to our soft state
4175 * @logdrv - logical drive to be deleted
4176 *
4177 * Delete the specified logical drive. It is the responsibility of the user
4178 * app to let the OS know about this operation.
4179 */
4180 static int
4181 mega_del_logdrv(adapter_t *adapter, int logdrv)
4182 {
4183 unsigned long flags;
4184 scb_t *scb;
4185 int rval;
4186
4187 /*
4188 * Stop sending commands to the controller, queue them internally.
4189 * When deletion is complete, ISR will flush the queue.
4190 */
4191 atomic_set(&adapter->quiescent, 1);
4192
4193 /*
4194 * Wait till all the issued commands are complete and there are no
4195 * commands in the pending queue
4196 */
4197 while (atomic_read(&adapter->pend_cmds) > 0 ||
4198 !list_empty(&adapter->pending_list))
4199 msleep(1000); /* sleep for 1s */
4200
4201 rval = mega_do_del_logdrv(adapter, logdrv);
4202
4203 spin_lock_irqsave(&adapter->lock, flags);
4204
4205 /*
4206 * If delete operation was successful, add 0x80 to the logical drive
4207 * ids for commands in the pending queue.
4208 */
4209 if (adapter->read_ldidmap) {
4210 struct list_head *pos;
4211 list_for_each(pos, &adapter->pending_list) {
4212 scb = list_entry(pos, scb_t, list);
4213 if (scb->pthru->logdrv < 0x80 )
4214 scb->pthru->logdrv += 0x80;
4215 }
4216 }
4217
4218 atomic_set(&adapter->quiescent, 0);
4219
4220 mega_runpendq(adapter);
4221
4222 spin_unlock_irqrestore(&adapter->lock, flags);
4223
4224 return rval;
4225 }
4226
4227
4228 static int
4229 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4230 {
4231 megacmd_t mc;
4232 int rval;
4233
4234 memset( &mc, 0, sizeof(megacmd_t));
4235
4236 mc.cmd = FC_DEL_LOGDRV;
4237 mc.opcode = OP_DEL_LOGDRV;
4238 mc.subopcode = logdrv;
4239
4240 rval = mega_internal_command(adapter, &mc, NULL);
4241
4242 /* log this event */
4243 if(rval) {
4244 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4245 return rval;
4246 }
4247
4248 /*
4249 * After deleting first logical drive, the logical drives must be
4250 * addressed by adding 0x80 to the logical drive id.
4251 */
4252 adapter->read_ldidmap = 1;
4253
4254 return rval;
4255 }
4256
4257
4258 /**
4259 * mega_get_max_sgl()
4260 * @adapter - pointer to our soft state
4261 *
4262 * Find out the maximum number of scatter-gather elements supported by this
4263 * version of the firmware
4264 */
4265 static void
4266 mega_get_max_sgl(adapter_t *adapter)
4267 {
4268 unsigned char raw_mbox[sizeof(struct mbox_out)];
4269 mbox_t *mbox;
4270
4271 mbox = (mbox_t *)raw_mbox;
4272
4273 memset(mbox, 0, sizeof(raw_mbox));
4274
4275 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4276
4277 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4278
4279 raw_mbox[0] = MAIN_MISC_OPCODE;
4280 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4281
4282
4283 if( issue_scb_block(adapter, raw_mbox) ) {
4284 /*
4285 * f/w does not support this command. Choose the default value
4286 */
4287 adapter->sglen = MIN_SGLIST;
4288 }
4289 else {
4290 adapter->sglen = *((char *)adapter->mega_buffer);
4291
4292 /*
4293 * Make sure this is not more than the resources we are
4294 * planning to allocate
4295 */
4296 if ( adapter->sglen > MAX_SGLIST )
4297 adapter->sglen = MAX_SGLIST;
4298 }
4299
4300 return;
4301 }
4302
4303
4304 /**
4305 * mega_support_cluster()
4306 * @adapter - pointer to our soft state
4307 *
4308 * Find out if this firmware support cluster calls.
4309 */
4310 static int
4311 mega_support_cluster(adapter_t *adapter)
4312 {
4313 unsigned char raw_mbox[sizeof(struct mbox_out)];
4314 mbox_t *mbox;
4315
4316 mbox = (mbox_t *)raw_mbox;
4317
4318 memset(mbox, 0, sizeof(raw_mbox));
4319
4320 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4321
4322 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4323
4324 /*
4325 * Try to get the initiator id. This command will succeed iff the
4326 * clustering is available on this HBA.
4327 */
4328 raw_mbox[0] = MEGA_GET_TARGET_ID;
4329
4330 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4331
4332 /*
4333 * Cluster support available. Get the initiator target id.
4334 * Tell our id to mid-layer too.
4335 */
4336 adapter->this_id = *(u32 *)adapter->mega_buffer;
4337 adapter->host->this_id = adapter->this_id;
4338
4339 return 1;
4340 }
4341
4342 return 0;
4343 }
4344
4345
4346 /**
4347 * mega_adapinq()
4348 * @adapter - pointer to our soft state
4349 * @dma_handle - DMA address of the buffer
4350 *
4351 * Issue internal comamnds while interrupts are available.
4352 * We only issue direct mailbox commands from within the driver. ioctl()
4353 * interface using these routines can issue passthru commands.
4354 */
4355 static int
4356 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4357 {
4358 megacmd_t mc;
4359
4360 memset(&mc, 0, sizeof(megacmd_t));
4361
4362 if( adapter->flag & BOARD_40LD ) {
4363 mc.cmd = FC_NEW_CONFIG;
4364 mc.opcode = NC_SUBOP_ENQUIRY3;
4365 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4366 }
4367 else {
4368 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4369 }
4370
4371 mc.xferaddr = (u32)dma_handle;
4372
4373 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4374 return -1;
4375 }
4376
4377 return 0;
4378 }
4379
4380
4381 /** mega_internal_dev_inquiry()
4382 * @adapter - pointer to our soft state
4383 * @ch - channel for this device
4384 * @tgt - ID of this device
4385 * @buf_dma_handle - DMA address of the buffer
4386 *
4387 * Issue the scsi inquiry for the specified device.
4388 */
4389 static int
4390 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4391 dma_addr_t buf_dma_handle)
4392 {
4393 mega_passthru *pthru;
4394 dma_addr_t pthru_dma_handle;
4395 megacmd_t mc;
4396 int rval;
4397 struct pci_dev *pdev;
4398
4399
4400 /*
4401 * For all internal commands, the buffer must be allocated in <4GB
4402 * address range
4403 */
4404 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4405
4406 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4407 &pthru_dma_handle);
4408
4409 if( pthru == NULL ) {
4410 free_local_pdev(pdev);
4411 return -1;
4412 }
4413
4414 pthru->timeout = 2;
4415 pthru->ars = 1;
4416 pthru->reqsenselen = 14;
4417 pthru->islogical = 0;
4418
4419 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4420
4421 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4422
4423 pthru->cdblen = 6;
4424
4425 pthru->cdb[0] = INQUIRY;
4426 pthru->cdb[1] = 0;
4427 pthru->cdb[2] = 0;
4428 pthru->cdb[3] = 0;
4429 pthru->cdb[4] = 255;
4430 pthru->cdb[5] = 0;
4431
4432
4433 pthru->dataxferaddr = (u32)buf_dma_handle;
4434 pthru->dataxferlen = 256;
4435
4436 memset(&mc, 0, sizeof(megacmd_t));
4437
4438 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4439 mc.xferaddr = (u32)pthru_dma_handle;
4440
4441 rval = mega_internal_command(adapter, &mc, pthru);
4442
4443 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4444 pthru_dma_handle);
4445
4446 free_local_pdev(pdev);
4447
4448 return rval;
4449 }
4450
4451
4452 /**
4453 * mega_internal_command()
4454 * @adapter - pointer to our soft state
4455 * @mc - the mailbox command
4456 * @pthru - Passthru structure for DCDB commands
4457 *
4458 * Issue the internal commands in interrupt mode.
4459 * The last argument is the address of the passthru structure if the command
4460 * to be fired is a passthru command
4461 *
4462 * lockscope specifies whether the caller has already acquired the lock. Of
4463 * course, the caller must know which lock we are talking about.
4464 *
4465 * Note: parameter 'pthru' is null for non-passthru commands.
4466 */
4467 static int
4468 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4469 {
4470 Scsi_Cmnd *scmd;
4471 struct scsi_device *sdev;
4472 unsigned long flags = 0;
4473 scb_t *scb;
4474 int rval;
4475
4476 /*
4477 * The internal commands share one command id and hence are
4478 * serialized. This is so because we want to reserve maximum number of
4479 * available command ids for the I/O commands.
4480 */
4481 down(&adapter->int_mtx);
4482
4483 scb = &adapter->int_scb;
4484 memset(scb, 0, sizeof(scb_t));
4485
4486 scmd = &adapter->int_scmd;
4487 memset(scmd, 0, sizeof(Scsi_Cmnd));
4488
4489 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4490 memset(sdev, 0, sizeof(struct scsi_device));
4491 scmd->device = sdev;
4492
4493 scmd->device->host = adapter->host;
4494 scmd->buffer = (void *)scb;
4495 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4496
4497 scb->state |= SCB_ACTIVE;
4498 scb->cmd = scmd;
4499
4500 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4501
4502 /*
4503 * Is it a passthru command
4504 */
4505 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4506
4507 scb->pthru = pthru;
4508 }
4509
4510 scb->idx = CMDID_INT_CMDS;
4511
4512 megaraid_queue(scmd, mega_internal_done);
4513
4514 wait_for_completion(&adapter->int_waitq);
4515
4516 rval = scmd->result;
4517 mc->status = scmd->result;
4518 kfree(sdev);
4519
4520 /*
4521 * Print a debug message for all failed commands. Applications can use
4522 * this information.
4523 */
4524 if( scmd->result && trace_level ) {
4525 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4526 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4527 }
4528
4529 up(&adapter->int_mtx);
4530
4531 return rval;
4532 }
4533
4534
4535 /**
4536 * mega_internal_done()
4537 * @scmd - internal scsi command
4538 *
4539 * Callback routine for internal commands.
4540 */
4541 static void
4542 mega_internal_done(Scsi_Cmnd *scmd)
4543 {
4544 adapter_t *adapter;
4545
4546 adapter = (adapter_t *)scmd->device->host->hostdata;
4547
4548 complete(&adapter->int_waitq);
4549
4550 }
4551
4552
4553 static struct scsi_host_template megaraid_template = {
4554 .module = THIS_MODULE,
4555 .name = "MegaRAID",
4556 .proc_name = "megaraid",
4557 .info = megaraid_info,
4558 .queuecommand = megaraid_queue,
4559 .bios_param = megaraid_biosparam,
4560 .max_sectors = MAX_SECTORS_PER_IO,
4561 .can_queue = MAX_COMMANDS,
4562 .this_id = DEFAULT_INITIATOR_ID,
4563 .sg_tablesize = MAX_SGLIST,
4564 .cmd_per_lun = DEF_CMD_PER_LUN,
4565 .use_clustering = ENABLE_CLUSTERING,
4566 .eh_abort_handler = megaraid_abort,
4567 .eh_device_reset_handler = megaraid_reset,
4568 .eh_bus_reset_handler = megaraid_reset,
4569 .eh_host_reset_handler = megaraid_reset,
4570 };
4571
4572 static int __devinit
4573 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4574 {
4575 struct Scsi_Host *host;
4576 adapter_t *adapter;
4577 unsigned long mega_baseport, tbase, flag = 0;
4578 u16 subsysid, subsysvid;
4579 u8 pci_bus, pci_dev_func;
4580 int irq, i, j;
4581 int error = -ENODEV;
4582
4583 if (pci_enable_device(pdev))
4584 goto out;
4585 pci_set_master(pdev);
4586
4587 pci_bus = pdev->bus->number;
4588 pci_dev_func = pdev->devfn;
4589
4590 /*
4591 * The megaraid3 stuff reports the ID of the Intel part which is not
4592 * remotely specific to the megaraid
4593 */
4594 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4595 u16 magic;
4596 /*
4597 * Don't fall over the Compaq management cards using the same
4598 * PCI identifier
4599 */
4600 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4601 pdev->subsystem_device == 0xC000)
4602 return -ENODEV;
4603 /* Now check the magic signature byte */
4604 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4605 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4606 return -ENODEV;
4607 /* Ok it is probably a megaraid */
4608 }
4609
4610 /*
4611 * For these vendor and device ids, signature offsets are not
4612 * valid and 64 bit is implicit
4613 */
4614 if (id->driver_data & BOARD_64BIT)
4615 flag |= BOARD_64BIT;
4616 else {
4617 u32 magic64;
4618
4619 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4620 if (magic64 == HBA_SIGNATURE_64BIT)
4621 flag |= BOARD_64BIT;
4622 }
4623
4624 subsysvid = pdev->subsystem_vendor;
4625 subsysid = pdev->subsystem_device;
4626
4627 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4628 id->vendor, id->device, pci_bus);
4629
4630 printk("slot %d:func %d\n",
4631 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4632
4633 /* Read the base port and IRQ from PCI */
4634 mega_baseport = pci_resource_start(pdev, 0);
4635 irq = pdev->irq;
4636
4637 tbase = mega_baseport;
4638 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4639 flag |= BOARD_MEMMAP;
4640
4641 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4642 printk(KERN_WARNING "megaraid: mem region busy!\n");
4643 goto out_disable_device;
4644 }
4645
4646 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4647 if (!mega_baseport) {
4648 printk(KERN_WARNING
4649 "megaraid: could not map hba memory\n");
4650 goto out_release_region;
4651 }
4652 } else {
4653 flag |= BOARD_IOMAP;
4654 mega_baseport += 0x10;
4655
4656 if (!request_region(mega_baseport, 16, "megaraid"))
4657 goto out_disable_device;
4658 }
4659
4660 /* Initialize SCSI Host structure */
4661 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4662 if (!host)
4663 goto out_iounmap;
4664
4665 adapter = (adapter_t *)host->hostdata;
4666 memset(adapter, 0, sizeof(adapter_t));
4667
4668 printk(KERN_NOTICE
4669 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4670 host->host_no, mega_baseport, irq);
4671
4672 adapter->base = mega_baseport;
4673
4674 INIT_LIST_HEAD(&adapter->free_list);
4675 INIT_LIST_HEAD(&adapter->pending_list);
4676 INIT_LIST_HEAD(&adapter->completed_list);
4677
4678 adapter->flag = flag;
4679 spin_lock_init(&adapter->lock);
4680
4681 host->cmd_per_lun = max_cmd_per_lun;
4682 host->max_sectors = max_sectors_per_io;
4683
4684 adapter->dev = pdev;
4685 adapter->host = host;
4686
4687 adapter->host->irq = irq;
4688
4689 if (flag & BOARD_MEMMAP)
4690 adapter->host->base = tbase;
4691 else {
4692 adapter->host->io_port = tbase;
4693 adapter->host->n_io_port = 16;
4694 }
4695
4696 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4697
4698 /*
4699 * Allocate buffer to issue internal commands.
4700 */
4701 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4702 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4703 if (!adapter->mega_buffer) {
4704 printk(KERN_WARNING "megaraid: out of RAM.\n");
4705 goto out_host_put;
4706 }
4707
4708 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4709 if (!adapter->scb_list) {
4710 printk(KERN_WARNING "megaraid: out of RAM.\n");
4711 goto out_free_cmd_buffer;
4712 }
4713
4714 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4715 megaraid_isr_memmapped : megaraid_isr_iomapped,
4716 SA_SHIRQ, "megaraid", adapter)) {
4717 printk(KERN_WARNING
4718 "megaraid: Couldn't register IRQ %d!\n", irq);
4719 goto out_free_scb_list;
4720 }
4721
4722 if (mega_setup_mailbox(adapter))
4723 goto out_free_irq;
4724
4725 if (mega_query_adapter(adapter))
4726 goto out_free_mbox;
4727
4728 /*
4729 * Have checks for some buggy f/w
4730 */
4731 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4732 /*
4733 * Which firmware
4734 */
4735 if (!strcmp(adapter->fw_version, "3.00") ||
4736 !strcmp(adapter->fw_version, "3.01")) {
4737
4738 printk( KERN_WARNING
4739 "megaraid: Your card is a Dell PERC "
4740 "2/SC RAID controller with "
4741 "firmware\nmegaraid: 3.00 or 3.01. "
4742 "This driver is known to have "
4743 "corruption issues\nmegaraid: with "
4744 "those firmware versions on this "
4745 "specific card. In order\nmegaraid: "
4746 "to protect your data, please upgrade "
4747 "your firmware to version\nmegaraid: "
4748 "3.10 or later, available from the "
4749 "Dell Technical Support web\n"
4750 "megaraid: site at\nhttp://support."
4751 "dell.com/us/en/filelib/download/"
4752 "index.asp?fileid=2940\n"
4753 );
4754 }
4755 }
4756
4757 /*
4758 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4759 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4760 * support, since this firmware cannot handle 64 bit
4761 * addressing
4762 */
4763 if ((subsysvid == HP_SUBSYS_VID) &&
4764 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4765 /*
4766 * which firmware
4767 */
4768 if (!strcmp(adapter->fw_version, "H01.07") ||
4769 !strcmp(adapter->fw_version, "H01.08") ||
4770 !strcmp(adapter->fw_version, "H01.09") ) {
4771 printk(KERN_WARNING
4772 "megaraid: Firmware H.01.07, "
4773 "H.01.08, and H.01.09 on 1M/2M "
4774 "controllers\n"
4775 "megaraid: do not support 64 bit "
4776 "addressing.\nmegaraid: DISABLING "
4777 "64 bit support.\n");
4778 adapter->flag &= ~BOARD_64BIT;
4779 }
4780 }
4781
4782 if (mega_is_bios_enabled(adapter))
4783 mega_hbas[hba_count].is_bios_enabled = 1;
4784 mega_hbas[hba_count].hostdata_addr = adapter;
4785
4786 /*
4787 * Find out which channel is raid and which is scsi. This is
4788 * for ROMB support.
4789 */
4790 mega_enum_raid_scsi(adapter);
4791
4792 /*
4793 * Find out if a logical drive is set as the boot drive. If
4794 * there is one, will make that as the first logical drive.
4795 * ROMB: Do we have to boot from a physical drive. Then all
4796 * the physical drives would appear before the logical disks.
4797 * Else, all the physical drives would be exported to the mid
4798 * layer after logical drives.
4799 */
4800 mega_get_boot_drv(adapter);
4801
4802 if (adapter->boot_pdrv_enabled) {
4803 j = adapter->product_info.nchannels;
4804 for( i = 0; i < j; i++ )
4805 adapter->logdrv_chan[i] = 0;
4806 for( i = j; i < NVIRT_CHAN + j; i++ )
4807 adapter->logdrv_chan[i] = 1;
4808 } else {
4809 for (i = 0; i < NVIRT_CHAN; i++)
4810 adapter->logdrv_chan[i] = 1;
4811 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4812 adapter->logdrv_chan[i] = 0;
4813 adapter->mega_ch_class <<= NVIRT_CHAN;
4814 }
4815
4816 /*
4817 * Do we support random deletion and addition of logical
4818 * drives
4819 */
4820 adapter->read_ldidmap = 0; /* set it after first logdrv
4821 delete cmd */
4822 adapter->support_random_del = mega_support_random_del(adapter);
4823
4824 /* Initialize SCBs */
4825 if (mega_init_scb(adapter))
4826 goto out_free_mbox;
4827
4828 /*
4829 * Reset the pending commands counter
4830 */
4831 atomic_set(&adapter->pend_cmds, 0);
4832
4833 /*
4834 * Reset the adapter quiescent flag
4835 */
4836 atomic_set(&adapter->quiescent, 0);
4837
4838 hba_soft_state[hba_count] = adapter;
4839
4840 /*
4841 * Fill in the structure which needs to be passed back to the
4842 * application when it does an ioctl() for controller related
4843 * information.
4844 */
4845 i = hba_count;
4846
4847 mcontroller[i].base = mega_baseport;
4848 mcontroller[i].irq = irq;
4849 mcontroller[i].numldrv = adapter->numldrv;
4850 mcontroller[i].pcibus = pci_bus;
4851 mcontroller[i].pcidev = id->device;
4852 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4853 mcontroller[i].pciid = -1;
4854 mcontroller[i].pcivendor = id->vendor;
4855 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4856 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4857
4858
4859 /* Set the Mode of addressing to 64 bit if we can */
4860 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4861 pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
4862 adapter->has_64bit_addr = 1;
4863 } else {
4864 pci_set_dma_mask(pdev, 0xffffffff);
4865 adapter->has_64bit_addr = 0;
4866 }
4867
4868 init_MUTEX(&adapter->int_mtx);
4869 init_completion(&adapter->int_waitq);
4870
4871 adapter->this_id = DEFAULT_INITIATOR_ID;
4872 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4873
4874 #if MEGA_HAVE_CLUSTERING
4875 /*
4876 * Is cluster support enabled on this controller
4877 * Note: In a cluster the HBAs ( the initiators ) will have
4878 * different target IDs and we cannot assume it to be 7. Call
4879 * to mega_support_cluster() will get the target ids also if
4880 * the cluster support is available
4881 */
4882 adapter->has_cluster = mega_support_cluster(adapter);
4883 if (adapter->has_cluster) {
4884 printk(KERN_NOTICE
4885 "megaraid: Cluster driver, initiator id:%d\n",
4886 adapter->this_id);
4887 }
4888 #endif
4889
4890 pci_set_drvdata(pdev, host);
4891
4892 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4893
4894 error = scsi_add_host(host, &pdev->dev);
4895 if (error)
4896 goto out_free_mbox;
4897
4898 scsi_scan_host(host);
4899 hba_count++;
4900 return 0;
4901
4902 out_free_mbox:
4903 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4904 adapter->una_mbox64, adapter->una_mbox64_dma);
4905 out_free_irq:
4906 free_irq(adapter->host->irq, adapter);
4907 out_free_scb_list:
4908 kfree(adapter->scb_list);
4909 out_free_cmd_buffer:
4910 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4911 adapter->mega_buffer, adapter->buf_dma_handle);
4912 out_host_put:
4913 scsi_host_put(host);
4914 out_iounmap:
4915 if (flag & BOARD_MEMMAP)
4916 iounmap((void *)mega_baseport);
4917 out_release_region:
4918 if (flag & BOARD_MEMMAP)
4919 release_mem_region(tbase, 128);
4920 else
4921 release_region(mega_baseport, 16);
4922 out_disable_device:
4923 pci_disable_device(pdev);
4924 out:
4925 return error;
4926 }
4927
4928 static void
4929 __megaraid_shutdown(adapter_t *adapter)
4930 {
4931 u_char raw_mbox[sizeof(struct mbox_out)];
4932 mbox_t *mbox = (mbox_t *)raw_mbox;
4933 int i;
4934
4935 /* Flush adapter cache */
4936 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4937 raw_mbox[0] = FLUSH_ADAPTER;
4938
4939 free_irq(adapter->host->irq, adapter);
4940
4941 /* Issue a blocking (interrupts disabled) command to the card */
4942 issue_scb_block(adapter, raw_mbox);
4943
4944 /* Flush disks cache */
4945 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4946 raw_mbox[0] = FLUSH_SYSTEM;
4947
4948 /* Issue a blocking (interrupts disabled) command to the card */
4949 issue_scb_block(adapter, raw_mbox);
4950
4951 if (atomic_read(&adapter->pend_cmds) > 0)
4952 printk(KERN_WARNING "megaraid: pending commands!!\n");
4953
4954 /*
4955 * Have a delibrate delay to make sure all the caches are
4956 * actually flushed.
4957 */
4958 for (i = 0; i <= 10; i++)
4959 mdelay(1000);
4960 }
4961
4962 static void
4963 megaraid_remove_one(struct pci_dev *pdev)
4964 {
4965 struct Scsi_Host *host = pci_get_drvdata(pdev);
4966 adapter_t *adapter = (adapter_t *)host->hostdata;
4967 char buf[12] = { 0 };
4968
4969 scsi_remove_host(host);
4970
4971 __megaraid_shutdown(adapter);
4972
4973 /* Free our resources */
4974 if (adapter->flag & BOARD_MEMMAP) {
4975 iounmap((void *)adapter->base);
4976 release_mem_region(adapter->host->base, 128);
4977 } else
4978 release_region(adapter->base, 16);
4979
4980 mega_free_sgl(adapter);
4981
4982 #ifdef CONFIG_PROC_FS
4983 if (adapter->controller_proc_dir_entry) {
4984 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4985 remove_proc_entry("config",
4986 adapter->controller_proc_dir_entry);
4987 remove_proc_entry("mailbox",
4988 adapter->controller_proc_dir_entry);
4989 #if MEGA_HAVE_ENH_PROC
4990 remove_proc_entry("rebuild-rate",
4991 adapter->controller_proc_dir_entry);
4992 remove_proc_entry("battery-status",
4993 adapter->controller_proc_dir_entry);
4994
4995 remove_proc_entry("diskdrives-ch0",
4996 adapter->controller_proc_dir_entry);
4997 remove_proc_entry("diskdrives-ch1",
4998 adapter->controller_proc_dir_entry);
4999 remove_proc_entry("diskdrives-ch2",
5000 adapter->controller_proc_dir_entry);
5001 remove_proc_entry("diskdrives-ch3",
5002 adapter->controller_proc_dir_entry);
5003
5004 remove_proc_entry("raiddrives-0-9",
5005 adapter->controller_proc_dir_entry);
5006 remove_proc_entry("raiddrives-10-19",
5007 adapter->controller_proc_dir_entry);
5008 remove_proc_entry("raiddrives-20-29",
5009 adapter->controller_proc_dir_entry);
5010 remove_proc_entry("raiddrives-30-39",
5011 adapter->controller_proc_dir_entry);
5012 #endif
5013 sprintf(buf, "hba%d", adapter->host->host_no);
5014 remove_proc_entry(buf, mega_proc_dir_entry);
5015 }
5016 #endif
5017
5018 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5019 adapter->mega_buffer, adapter->buf_dma_handle);
5020 kfree(adapter->scb_list);
5021 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5022 adapter->una_mbox64, adapter->una_mbox64_dma);
5023
5024 scsi_host_put(host);
5025 pci_disable_device(pdev);
5026
5027 hba_count--;
5028 }
5029
5030 static void
5031 megaraid_shutdown(struct pci_dev *pdev)
5032 {
5033 struct Scsi_Host *host = pci_get_drvdata(pdev);
5034 adapter_t *adapter = (adapter_t *)host->hostdata;
5035
5036 __megaraid_shutdown(adapter);
5037 }
5038
5039 static struct pci_device_id megaraid_pci_tbl[] = {
5040 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
5041 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5042 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
5043 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5044 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
5045 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5046 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5047 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5048 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5049 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5050 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
5051 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5052 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5053 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5054 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3,
5055 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5056 {0,}
5057 };
5058 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5059
5060 static struct pci_driver megaraid_pci_driver = {
5061 .name = "megaraid",
5062 .id_table = megaraid_pci_tbl,
5063 .probe = megaraid_probe_one,
5064 .remove = __devexit_p(megaraid_remove_one),
5065 .shutdown = megaraid_shutdown,
5066 };
5067
5068 static int __init megaraid_init(void)
5069 {
5070 int error;
5071
5072 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5073 max_cmd_per_lun = MAX_CMD_PER_LUN;
5074 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5075 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5076
5077 #ifdef CONFIG_PROC_FS
5078 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5079 if (!mega_proc_dir_entry) {
5080 printk(KERN_WARNING
5081 "megaraid: failed to create megaraid root\n");
5082 }
5083 #endif
5084 error = pci_module_init(&megaraid_pci_driver);
5085 if (error) {
5086 #ifdef CONFIG_PROC_FS
5087 remove_proc_entry("megaraid", &proc_root);
5088 #endif
5089 return error;
5090 }
5091
5092 /*
5093 * Register the driver as a character device, for applications
5094 * to access it for ioctls.
5095 * First argument (major) to register_chrdev implies a dynamic
5096 * major number allocation.
5097 */
5098 major = register_chrdev(0, "megadev", &megadev_fops);
5099 if (!major) {
5100 printk(KERN_WARNING
5101 "megaraid: failed to register char device\n");
5102 }
5103
5104 return 0;
5105 }
5106
5107 static void __exit megaraid_exit(void)
5108 {
5109 /*
5110 * Unregister the character device interface to the driver.
5111 */
5112 unregister_chrdev(major, "megadev");
5113
5114 pci_unregister_driver(&megaraid_pci_driver);
5115
5116 #ifdef CONFIG_PROC_FS
5117 remove_proc_entry("megaraid", &proc_root);
5118 #endif
5119 }
5120
5121 module_init(megaraid_init);
5122 module_exit(megaraid_exit);
5123
5124 /* vi: set ts=8 sw=8 tw=78: */
Linux kernel - Deliverables
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