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xen: Enable console tty by default in domU if it's not a dummy
[linux-2.6/mini2440.git] / drivers / scsi / megaraid.c
blob18551aaf5e094e07612ddf028df0dc7f2a05d344
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34 #include <linux/mm.h>
35 #include <linux/fs.h>
36 #include <linux/blkdev.h>
37 #include <asm/uaccess.h>
38 #include <asm/io.h>
39 #include <linux/completion.h>
40 #include <linux/delay.h>
41 #include <linux/proc_fs.h>
42 #include <linux/reboot.h>
43 #include <linux/module.h>
44 #include <linux/list.h>
45 #include <linux/interrupt.h>
46 #include <linux/pci.h>
47 #include <linux/init.h>
48 #include <linux/dma-mapping.h>
49 #include <scsi/scsicam.h>
50
51 #include "scsi.h"
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid.h"
55
56 #define MEGARAID_MODULE_VERSION "2.00.4"
57
58 MODULE_AUTHOR ("sju@lsil.com");
59 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
60 MODULE_LICENSE ("GPL");
61 MODULE_VERSION(MEGARAID_MODULE_VERSION);
62
63 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
64 module_param(max_cmd_per_lun, uint, 0);
65 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
66
67 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
68 module_param(max_sectors_per_io, ushort, 0);
69 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70
71
72 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
73 module_param(max_mbox_busy_wait, ushort, 0);
74 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
75
76 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
77 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
78 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
79 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
80
81 /*
82 * Global variables
83 */
84
85 static int hba_count;
86 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
87 static struct proc_dir_entry *mega_proc_dir_entry;
88
89 /* For controller re-ordering */
90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92 /*
93 * The File Operations structure for the serial/ioctl interface of the driver
94 */
95 static const struct file_operations megadev_fops = {
96 .owner = THIS_MODULE,
97 .ioctl = megadev_ioctl,
98 .open = megadev_open,
99 };
100
101 /*
102 * Array to structures for storing the information about the controllers. This
103 * information is sent to the user level applications, when they do an ioctl
104 * for this information.
105 */
106 static struct mcontroller mcontroller[MAX_CONTROLLERS];
107
108 /* The current driver version */
109 static u32 driver_ver = 0x02000000;
110
111 /* major number used by the device for character interface */
112 static int major;
113
114 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115
116
117 /*
118 * Debug variable to print some diagnostic messages
119 */
120 static int trace_level;
121
122 /**
123 * mega_setup_mailbox()
124 * @adapter - pointer to our soft state
125 *
126 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 */
128 static int
129 mega_setup_mailbox(adapter_t *adapter)
130 {
131 unsigned long align;
132
133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
134 sizeof(mbox64_t), &adapter->una_mbox64_dma);
135
136 if( !adapter->una_mbox64 ) return -1;
137
138 adapter->mbox = &adapter->una_mbox64->mbox;
139
140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
141 (~0UL ^ 0xFUL));
142
143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
144
145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
146
147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
148
149 /*
150 * Register the mailbox if the controller is an io-mapped controller
151 */
152 if( adapter->flag & BOARD_IOMAP ) {
153
154 outb(adapter->mbox_dma & 0xFF,
155 adapter->host->io_port + MBOX_PORT0);
156
157 outb((adapter->mbox_dma >> 8) & 0xFF,
158 adapter->host->io_port + MBOX_PORT1);
159
160 outb((adapter->mbox_dma >> 16) & 0xFF,
161 adapter->host->io_port + MBOX_PORT2);
162
163 outb((adapter->mbox_dma >> 24) & 0xFF,
164 adapter->host->io_port + MBOX_PORT3);
165
166 outb(ENABLE_MBOX_BYTE,
167 adapter->host->io_port + ENABLE_MBOX_REGION);
168
169 irq_ack(adapter);
170
171 irq_enable(adapter);
172 }
173
174 return 0;
175 }
176
177
178 /*
179 * mega_query_adapter()
180 * @adapter - pointer to our soft state
181 *
182 * Issue the adapter inquiry commands to the controller and find out
183 * information and parameter about the devices attached
184 */
185 static int
186 mega_query_adapter(adapter_t *adapter)
187 {
188 dma_addr_t prod_info_dma_handle;
189 mega_inquiry3 *inquiry3;
190 u8 raw_mbox[sizeof(struct mbox_out)];
191 mbox_t *mbox;
192 int retval;
193
194 /* Initialize adapter inquiry mailbox */
195
196 mbox = (mbox_t *)raw_mbox;
197
198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
199 memset(&mbox->m_out, 0, sizeof(raw_mbox));
200
201 /*
202 * Try to issue Inquiry3 command
203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
204 * update enquiry3 structure
205 */
206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
207
208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
209
210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
213
214 /* Issue a blocking command to the card */
215 if ((retval = issue_scb_block(adapter, raw_mbox))) {
216 /* the adapter does not support 40ld */
217
218 mraid_ext_inquiry *ext_inq;
219 mraid_inquiry *inq;
220 dma_addr_t dma_handle;
221
222 ext_inq = pci_alloc_consistent(adapter->dev,
223 sizeof(mraid_ext_inquiry), &dma_handle);
224
225 if( ext_inq == NULL ) return -1;
226
227 inq = &ext_inq->raid_inq;
228
229 mbox->m_out.xferaddr = (u32)dma_handle;
230
231 /*issue old 0x04 command to adapter */
232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
233
234 issue_scb_block(adapter, raw_mbox);
235
236 /*
237 * update Enquiry3 and ProductInfo structures with
238 * mraid_inquiry structure
239 */
240 mega_8_to_40ld(inq, inquiry3,
241 (mega_product_info *)&adapter->product_info);
242
243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
244 ext_inq, dma_handle);
245
246 } else { /*adapter supports 40ld */
247 adapter->flag |= BOARD_40LD;
248
249 /*
250 * get product_info, which is static information and will be
251 * unchanged
252 */
253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
254 &adapter->product_info,
255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
256
257 mbox->m_out.xferaddr = prod_info_dma_handle;
258
259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
261
262 if ((retval = issue_scb_block(adapter, raw_mbox)))
263 printk(KERN_WARNING
264 "megaraid: Product_info cmd failed with error: %d\n",
265 retval);
266
267 pci_unmap_single(adapter->dev, prod_info_dma_handle,
268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
269 }
270
271
272 /*
273 * kernel scans the channels from 0 to <= max_channel
274 */
275 adapter->host->max_channel =
276 adapter->product_info.nchannels + NVIRT_CHAN -1;
277
278 adapter->host->max_id = 16; /* max targets per channel */
279
280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
281
282 adapter->host->cmd_per_lun = max_cmd_per_lun;
283
284 adapter->numldrv = inquiry3->num_ldrv;
285
286 adapter->max_cmds = adapter->product_info.max_commands;
287
288 if(adapter->max_cmds > MAX_COMMANDS)
289 adapter->max_cmds = MAX_COMMANDS;
290
291 adapter->host->can_queue = adapter->max_cmds - 1;
292
293 /*
294 * Get the maximum number of scatter-gather elements supported by this
295 * firmware
296 */
297 mega_get_max_sgl(adapter);
298
299 adapter->host->sg_tablesize = adapter->sglen;
300
301
302 /* use HP firmware and bios version encoding */
303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
304 sprintf (adapter->fw_version, "%c%d%d.%d%d",
305 adapter->product_info.fw_version[2],
306 adapter->product_info.fw_version[1] >> 8,
307 adapter->product_info.fw_version[1] & 0x0f,
308 adapter->product_info.fw_version[0] >> 8,
309 adapter->product_info.fw_version[0] & 0x0f);
310 sprintf (adapter->bios_version, "%c%d%d.%d%d",
311 adapter->product_info.bios_version[2],
312 adapter->product_info.bios_version[1] >> 8,
313 adapter->product_info.bios_version[1] & 0x0f,
314 adapter->product_info.bios_version[0] >> 8,
315 adapter->product_info.bios_version[0] & 0x0f);
316 } else {
317 memcpy(adapter->fw_version,
318 (char *)adapter->product_info.fw_version, 4);
319 adapter->fw_version[4] = 0;
320
321 memcpy(adapter->bios_version,
322 (char *)adapter->product_info.bios_version, 4);
323
324 adapter->bios_version[4] = 0;
325 }
326
327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
328 adapter->fw_version, adapter->bios_version, adapter->numldrv);
329
330 /*
331 * Do we support extended (>10 bytes) cdbs
332 */
333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
334 if (adapter->support_ext_cdb)
335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
336
337
338 return 0;
339 }
340
341 /**
342 * mega_runpendq()
343 * @adapter - pointer to our soft state
344 *
345 * Runs through the list of pending requests.
346 */
347 static inline void
348 mega_runpendq(adapter_t *adapter)
349 {
350 if(!list_empty(&adapter->pending_list))
351 __mega_runpendq(adapter);
352 }
353
354 /*
355 * megaraid_queue()
356 * @scmd - Issue this scsi command
357 * @done - the callback hook into the scsi mid-layer
358 *
359 * The command queuing entry point for the mid-layer.
360 */
361 static int
362 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
363 {
364 adapter_t *adapter;
365 scb_t *scb;
366 int busy=0;
367 unsigned long flags;
368
369 adapter = (adapter_t *)scmd->device->host->hostdata;
370
371 scmd->scsi_done = done;
372
373
374 /*
375 * Allocate and build a SCB request
376 * busy flag will be set if mega_build_cmd() command could not
377 * allocate scb. We will return non-zero status in that case.
378 * NOTE: scb can be null even though certain commands completed
379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
380 * return 0 in that case.
381 */
382
383 spin_lock_irqsave(&adapter->lock, flags);
384 scb = mega_build_cmd(adapter, scmd, &busy);
385 if (!scb)
386 goto out;
387
388 scb->state |= SCB_PENDQ;
389 list_add_tail(&scb->list, &adapter->pending_list);
390
391 /*
392 * Check if the HBA is in quiescent state, e.g., during a
393 * delete logical drive opertion. If it is, don't run
394 * the pending_list.
395 */
396 if (atomic_read(&adapter->quiescent) == 0)
397 mega_runpendq(adapter);
398
399 busy = 0;
400 out:
401 spin_unlock_irqrestore(&adapter->lock, flags);
402 return busy;
403 }
404
405 /**
406 * mega_allocate_scb()
407 * @adapter - pointer to our soft state
408 * @cmd - scsi command from the mid-layer
409 *
410 * Allocate a SCB structure. This is the central structure for controller
411 * commands.
412 */
413 static inline scb_t *
414 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
415 {
416 struct list_head *head = &adapter->free_list;
417 scb_t *scb;
418
419 /* Unlink command from Free List */
420 if( !list_empty(head) ) {
421
422 scb = list_entry(head->next, scb_t, list);
423
424 list_del_init(head->next);
425
426 scb->state = SCB_ACTIVE;
427 scb->cmd = cmd;
428 scb->dma_type = MEGA_DMA_TYPE_NONE;
429
430 return scb;
431 }
432
433 return NULL;
434 }
435
436 /**
437 * mega_get_ldrv_num()
438 * @adapter - pointer to our soft state
439 * @cmd - scsi mid layer command
440 * @channel - channel on the controller
441 *
442 * Calculate the logical drive number based on the information in scsi command
443 * and the channel number.
444 */
445 static inline int
446 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
447 {
448 int tgt;
449 int ldrv_num;
450
451 tgt = cmd->device->id;
452
453 if ( tgt > adapter->this_id )
454 tgt--; /* we do not get inquires for initiator id */
455
456 ldrv_num = (channel * 15) + tgt;
457
458
459 /*
460 * If we have a logical drive with boot enabled, project it first
461 */
462 if( adapter->boot_ldrv_enabled ) {
463 if( ldrv_num == 0 ) {
464 ldrv_num = adapter->boot_ldrv;
465 }
466 else {
467 if( ldrv_num <= adapter->boot_ldrv ) {
468 ldrv_num--;
469 }
470 }
471 }
472
473 /*
474 * If "delete logical drive" feature is enabled on this controller.
475 * Do only if at least one delete logical drive operation was done.
476 *
477 * Also, after logical drive deletion, instead of logical drive number,
478 * the value returned should be 0x80+logical drive id.
479 *
480 * These is valid only for IO commands.
481 */
482
483 if (adapter->support_random_del && adapter->read_ldidmap )
484 switch (cmd->cmnd[0]) {
485 case READ_6: /* fall through */
486 case WRITE_6: /* fall through */
487 case READ_10: /* fall through */
488 case WRITE_10:
489 ldrv_num += 0x80;
490 }
491
492 return ldrv_num;
493 }
494
495 /**
496 * mega_build_cmd()
497 * @adapter - pointer to our soft state
498 * @cmd - Prepare using this scsi command
499 * @busy - busy flag if no resources
500 *
501 * Prepares a command and scatter gather list for the controller. This routine
502 * also finds out if the commands is intended for a logical drive or a
503 * physical device and prepares the controller command accordingly.
504 *
505 * We also re-order the logical drives and physical devices based on their
506 * boot settings.
507 */
508 static scb_t *
509 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
510 {
511 mega_ext_passthru *epthru;
512 mega_passthru *pthru;
513 scb_t *scb;
514 mbox_t *mbox;
515 long seg;
516 char islogical;
517 int max_ldrv_num;
518 int channel = 0;
519 int target = 0;
520 int ldrv_num = 0; /* logical drive number */
521
522
523 /*
524 * filter the internal and ioctl commands
525 */
526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
527 return (scb_t *)cmd->host_scribble;
528
529 /*
530 * We know what channels our logical drives are on - mega_find_card()
531 */
532 islogical = adapter->logdrv_chan[cmd->device->channel];
533
534 /*
535 * The theory: If physical drive is chosen for boot, all the physical
536 * devices are exported before the logical drives, otherwise physical
537 * devices are pushed after logical drives, in which case - Kernel sees
538 * the physical devices on virtual channel which is obviously converted
539 * to actual channel on the HBA.
540 */
541 if( adapter->boot_pdrv_enabled ) {
542 if( islogical ) {
543 /* logical channel */
544 channel = cmd->device->channel -
545 adapter->product_info.nchannels;
546 }
547 else {
548 /* this is physical channel */
549 channel = cmd->device->channel;
550 target = cmd->device->id;
551
552 /*
553 * boot from a physical disk, that disk needs to be
554 * exposed first IF both the channels are SCSI, then
555 * booting from the second channel is not allowed.
556 */
557 if( target == 0 ) {
558 target = adapter->boot_pdrv_tgt;
559 }
560 else if( target == adapter->boot_pdrv_tgt ) {
561 target = 0;
562 }
563 }
564 }
565 else {
566 if( islogical ) {
567 /* this is the logical channel */
568 channel = cmd->device->channel;
569 }
570 else {
571 /* physical channel */
572 channel = cmd->device->channel - NVIRT_CHAN;
573 target = cmd->device->id;
574 }
575 }
576
577
578 if(islogical) {
579
580 /* have just LUN 0 for each target on virtual channels */
581 if (cmd->device->lun) {
582 cmd->result = (DID_BAD_TARGET << 16);
583 cmd->scsi_done(cmd);
584 return NULL;
585 }
586
587 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
588
589
590 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
591 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
592
593 /*
594 * max_ldrv_num increases by 0x80 if some logical drive was
595 * deleted.
596 */
597 if(adapter->read_ldidmap)
598 max_ldrv_num += 0x80;
599
600 if(ldrv_num > max_ldrv_num ) {
601 cmd->result = (DID_BAD_TARGET << 16);
602 cmd->scsi_done(cmd);
603 return NULL;
604 }
605
606 }
607 else {
608 if( cmd->device->lun > 7) {
609 /*
610 * Do not support lun >7 for physically accessed
611 * devices
612 */
613 cmd->result = (DID_BAD_TARGET << 16);
614 cmd->scsi_done(cmd);
615 return NULL;
616 }
617 }
618
619 /*
620 *
621 * Logical drive commands
622 *
623 */
624 if(islogical) {
625 switch (cmd->cmnd[0]) {
626 case TEST_UNIT_READY:
627 #if MEGA_HAVE_CLUSTERING
628 /*
629 * Do we support clustering and is the support enabled
630 * If no, return success always
631 */
632 if( !adapter->has_cluster ) {
633 cmd->result = (DID_OK << 16);
634 cmd->scsi_done(cmd);
635 return NULL;
636 }
637
638 if(!(scb = mega_allocate_scb(adapter, cmd))) {
639 *busy = 1;
640 return NULL;
641 }
642
643 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
644 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
645 scb->raw_mbox[3] = ldrv_num;
646
647 scb->dma_direction = PCI_DMA_NONE;
648
649 return scb;
650 #else
651 cmd->result = (DID_OK << 16);
652 cmd->scsi_done(cmd);
653 return NULL;
654 #endif
655
656 case MODE_SENSE: {
657 char *buf;
658 struct scatterlist *sg;
659
660 sg = scsi_sglist(cmd);
661 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
662
663 memset(buf, 0, cmd->cmnd[4]);
664 kunmap_atomic(buf - sg->offset, KM_IRQ0);
665
666 cmd->result = (DID_OK << 16);
667 cmd->scsi_done(cmd);
668 return NULL;
669 }
670
671 case READ_CAPACITY:
672 case INQUIRY:
673
674 if(!(adapter->flag & (1L << cmd->device->channel))) {
675
676 printk(KERN_NOTICE
677 "scsi%d: scanning scsi channel %d ",
678 adapter->host->host_no,
679 cmd->device->channel);
680 printk("for logical drives.\n");
681
682 adapter->flag |= (1L << cmd->device->channel);
683 }
684
685 /* Allocate a SCB and initialize passthru */
686 if(!(scb = mega_allocate_scb(adapter, cmd))) {
687 *busy = 1;
688 return NULL;
689 }
690 pthru = scb->pthru;
691
692 mbox = (mbox_t *)scb->raw_mbox;
693 memset(mbox, 0, sizeof(scb->raw_mbox));
694 memset(pthru, 0, sizeof(mega_passthru));
695
696 pthru->timeout = 0;
697 pthru->ars = 1;
698 pthru->reqsenselen = 14;
699 pthru->islogical = 1;
700 pthru->logdrv = ldrv_num;
701 pthru->cdblen = cmd->cmd_len;
702 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
703
704 if( adapter->has_64bit_addr ) {
705 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
706 }
707 else {
708 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
709 }
710
711 scb->dma_direction = PCI_DMA_FROMDEVICE;
712
713 pthru->numsgelements = mega_build_sglist(adapter, scb,
714 &pthru->dataxferaddr, &pthru->dataxferlen);
715
716 mbox->m_out.xferaddr = scb->pthru_dma_addr;
717
718 return scb;
719
720 case READ_6:
721 case WRITE_6:
722 case READ_10:
723 case WRITE_10:
724 case READ_12:
725 case WRITE_12:
726
727 /* Allocate a SCB and initialize mailbox */
728 if(!(scb = mega_allocate_scb(adapter, cmd))) {
729 *busy = 1;
730 return NULL;
731 }
732 mbox = (mbox_t *)scb->raw_mbox;
733
734 memset(mbox, 0, sizeof(scb->raw_mbox));
735 mbox->m_out.logdrv = ldrv_num;
736
737 /*
738 * A little hack: 2nd bit is zero for all scsi read
739 * commands and is set for all scsi write commands
740 */
741 if( adapter->has_64bit_addr ) {
742 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
743 MEGA_MBOXCMD_LWRITE64:
744 MEGA_MBOXCMD_LREAD64 ;
745 }
746 else {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE:
749 MEGA_MBOXCMD_LREAD ;
750 }
751
752 /*
753 * 6-byte READ(0x08) or WRITE(0x0A) cdb
754 */
755 if( cmd->cmd_len == 6 ) {
756 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
757 mbox->m_out.lba =
758 ((u32)cmd->cmnd[1] << 16) |
759 ((u32)cmd->cmnd[2] << 8) |
760 (u32)cmd->cmnd[3];
761
762 mbox->m_out.lba &= 0x1FFFFF;
763
764 #if MEGA_HAVE_STATS
765 /*
766 * Take modulo 0x80, since the logical drive
767 * number increases by 0x80 when a logical
768 * drive was deleted
769 */
770 if (*cmd->cmnd == READ_6) {
771 adapter->nreads[ldrv_num%0x80]++;
772 adapter->nreadblocks[ldrv_num%0x80] +=
773 mbox->m_out.numsectors;
774 } else {
775 adapter->nwrites[ldrv_num%0x80]++;
776 adapter->nwriteblocks[ldrv_num%0x80] +=
777 mbox->m_out.numsectors;
778 }
779 #endif
780 }
781
782 /*
783 * 10-byte READ(0x28) or WRITE(0x2A) cdb
784 */
785 if( cmd->cmd_len == 10 ) {
786 mbox->m_out.numsectors =
787 (u32)cmd->cmnd[8] |
788 ((u32)cmd->cmnd[7] << 8);
789 mbox->m_out.lba =
790 ((u32)cmd->cmnd[2] << 24) |
791 ((u32)cmd->cmnd[3] << 16) |
792 ((u32)cmd->cmnd[4] << 8) |
793 (u32)cmd->cmnd[5];
794
795 #if MEGA_HAVE_STATS
796 if (*cmd->cmnd == READ_10) {
797 adapter->nreads[ldrv_num%0x80]++;
798 adapter->nreadblocks[ldrv_num%0x80] +=
799 mbox->m_out.numsectors;
800 } else {
801 adapter->nwrites[ldrv_num%0x80]++;
802 adapter->nwriteblocks[ldrv_num%0x80] +=
803 mbox->m_out.numsectors;
804 }
805 #endif
806 }
807
808 /*
809 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
810 */
811 if( cmd->cmd_len == 12 ) {
812 mbox->m_out.lba =
813 ((u32)cmd->cmnd[2] << 24) |
814 ((u32)cmd->cmnd[3] << 16) |
815 ((u32)cmd->cmnd[4] << 8) |
816 (u32)cmd->cmnd[5];
817
818 mbox->m_out.numsectors =
819 ((u32)cmd->cmnd[6] << 24) |
820 ((u32)cmd->cmnd[7] << 16) |
821 ((u32)cmd->cmnd[8] << 8) |
822 (u32)cmd->cmnd[9];
823
824 #if MEGA_HAVE_STATS
825 if (*cmd->cmnd == READ_12) {
826 adapter->nreads[ldrv_num%0x80]++;
827 adapter->nreadblocks[ldrv_num%0x80] +=
828 mbox->m_out.numsectors;
829 } else {
830 adapter->nwrites[ldrv_num%0x80]++;
831 adapter->nwriteblocks[ldrv_num%0x80] +=
832 mbox->m_out.numsectors;
833 }
834 #endif
835 }
836
837 /*
838 * If it is a read command
839 */
840 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
841 scb->dma_direction = PCI_DMA_FROMDEVICE;
842 }
843 else {
844 scb->dma_direction = PCI_DMA_TODEVICE;
845 }
846
847 /* Calculate Scatter-Gather info */
848 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
849 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
850
851 return scb;
852
853 #if MEGA_HAVE_CLUSTERING
854 case RESERVE: /* Fall through */
855 case RELEASE:
856
857 /*
858 * Do we support clustering and is the support enabled
859 */
860 if( ! adapter->has_cluster ) {
861
862 cmd->result = (DID_BAD_TARGET << 16);
863 cmd->scsi_done(cmd);
864 return NULL;
865 }
866
867 /* Allocate a SCB and initialize mailbox */
868 if(!(scb = mega_allocate_scb(adapter, cmd))) {
869 *busy = 1;
870 return NULL;
871 }
872
873 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
874 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
875 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
876
877 scb->raw_mbox[3] = ldrv_num;
878
879 scb->dma_direction = PCI_DMA_NONE;
880
881 return scb;
882 #endif
883
884 default:
885 cmd->result = (DID_BAD_TARGET << 16);
886 cmd->scsi_done(cmd);
887 return NULL;
888 }
889 }
890
891 /*
892 * Passthru drive commands
893 */
894 else {
895 /* Allocate a SCB and initialize passthru */
896 if(!(scb = mega_allocate_scb(adapter, cmd))) {
897 *busy = 1;
898 return NULL;
899 }
900
901 mbox = (mbox_t *)scb->raw_mbox;
902 memset(mbox, 0, sizeof(scb->raw_mbox));
903
904 if( adapter->support_ext_cdb ) {
905
906 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
907 channel, target);
908
909 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
910
911 mbox->m_out.xferaddr = scb->epthru_dma_addr;
912
913 }
914 else {
915
916 pthru = mega_prepare_passthru(adapter, scb, cmd,
917 channel, target);
918
919 /* Initialize mailbox */
920 if( adapter->has_64bit_addr ) {
921 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
922 }
923 else {
924 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
925 }
926
927 mbox->m_out.xferaddr = scb->pthru_dma_addr;
928
929 }
930 return scb;
931 }
932 return NULL;
933 }
934
935
936 /**
937 * mega_prepare_passthru()
938 * @adapter - pointer to our soft state
939 * @scb - our scsi control block
940 * @cmd - scsi command from the mid-layer
941 * @channel - actual channel on the controller
942 * @target - actual id on the controller.
943 *
944 * prepare a command for the scsi physical devices.
945 */
946 static mega_passthru *
947 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
948 int channel, int target)
949 {
950 mega_passthru *pthru;
951
952 pthru = scb->pthru;
953 memset(pthru, 0, sizeof (mega_passthru));
954
955 /* 0=6sec/1=60sec/2=10min/3=3hrs */
956 pthru->timeout = 2;
957
958 pthru->ars = 1;
959 pthru->reqsenselen = 14;
960 pthru->islogical = 0;
961
962 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
963
964 pthru->target = (adapter->flag & BOARD_40LD) ?
965 (channel << 4) | target : target;
966
967 pthru->cdblen = cmd->cmd_len;
968 pthru->logdrv = cmd->device->lun;
969
970 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
971
972 /* Not sure about the direction */
973 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
974
975 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
976 switch (cmd->cmnd[0]) {
977 case INQUIRY:
978 case READ_CAPACITY:
979 if(!(adapter->flag & (1L << cmd->device->channel))) {
980
981 printk(KERN_NOTICE
982 "scsi%d: scanning scsi channel %d [P%d] ",
983 adapter->host->host_no,
984 cmd->device->channel, channel);
985 printk("for physical devices.\n");
986
987 adapter->flag |= (1L << cmd->device->channel);
988 }
989 /* Fall through */
990 default:
991 pthru->numsgelements = mega_build_sglist(adapter, scb,
992 &pthru->dataxferaddr, &pthru->dataxferlen);
993 break;
994 }
995 return pthru;
996 }
997
998
999 /**
1000 * mega_prepare_extpassthru()
1001 * @adapter - pointer to our soft state
1002 * @scb - our scsi control block
1003 * @cmd - scsi command from the mid-layer
1004 * @channel - actual channel on the controller
1005 * @target - actual id on the controller.
1006 *
1007 * prepare a command for the scsi physical devices. This rountine prepares
1008 * commands for devices which can take extended CDBs (>10 bytes)
1009 */
1010 static mega_ext_passthru *
1011 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1012 int channel, int target)
1013 {
1014 mega_ext_passthru *epthru;
1015
1016 epthru = scb->epthru;
1017 memset(epthru, 0, sizeof(mega_ext_passthru));
1018
1019 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1020 epthru->timeout = 2;
1021
1022 epthru->ars = 1;
1023 epthru->reqsenselen = 14;
1024 epthru->islogical = 0;
1025
1026 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1027 epthru->target = (adapter->flag & BOARD_40LD) ?
1028 (channel << 4) | target : target;
1029
1030 epthru->cdblen = cmd->cmd_len;
1031 epthru->logdrv = cmd->device->lun;
1032
1033 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1034
1035 /* Not sure about the direction */
1036 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1037
1038 switch(cmd->cmnd[0]) {
1039 case INQUIRY:
1040 case READ_CAPACITY:
1041 if(!(adapter->flag & (1L << cmd->device->channel))) {
1042
1043 printk(KERN_NOTICE
1044 "scsi%d: scanning scsi channel %d [P%d] ",
1045 adapter->host->host_no,
1046 cmd->device->channel, channel);
1047 printk("for physical devices.\n");
1048
1049 adapter->flag |= (1L << cmd->device->channel);
1050 }
1051 /* Fall through */
1052 default:
1053 epthru->numsgelements = mega_build_sglist(adapter, scb,
1054 &epthru->dataxferaddr, &epthru->dataxferlen);
1055 break;
1056 }
1057
1058 return epthru;
1059 }
1060
1061 static void
1062 __mega_runpendq(adapter_t *adapter)
1063 {
1064 scb_t *scb;
1065 struct list_head *pos, *next;
1066
1067 /* Issue any pending commands to the card */
1068 list_for_each_safe(pos, next, &adapter->pending_list) {
1069
1070 scb = list_entry(pos, scb_t, list);
1071
1072 if( !(scb->state & SCB_ISSUED) ) {
1073
1074 if( issue_scb(adapter, scb) != 0 )
1075 return;
1076 }
1077 }
1078
1079 return;
1080 }
1081
1082
1083 /**
1084 * issue_scb()
1085 * @adapter - pointer to our soft state
1086 * @scb - scsi control block
1087 *
1088 * Post a command to the card if the mailbox is available, otherwise return
1089 * busy. We also take the scb from the pending list if the mailbox is
1090 * available.
1091 */
1092 static int
1093 issue_scb(adapter_t *adapter, scb_t *scb)
1094 {
1095 volatile mbox64_t *mbox64 = adapter->mbox64;
1096 volatile mbox_t *mbox = adapter->mbox;
1097 unsigned int i = 0;
1098
1099 if(unlikely(mbox->m_in.busy)) {
1100 do {
1101 udelay(1);
1102 i++;
1103 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1104
1105 if(mbox->m_in.busy) return -1;
1106 }
1107
1108 /* Copy mailbox data into host structure */
1109 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1110 sizeof(struct mbox_out));
1111
1112 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1113 mbox->m_in.busy = 1; /* Set busy */
1114
1115
1116 /*
1117 * Increment the pending queue counter
1118 */
1119 atomic_inc(&adapter->pend_cmds);
1120
1121 switch (mbox->m_out.cmd) {
1122 case MEGA_MBOXCMD_LREAD64:
1123 case MEGA_MBOXCMD_LWRITE64:
1124 case MEGA_MBOXCMD_PASSTHRU64:
1125 case MEGA_MBOXCMD_EXTPTHRU:
1126 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1127 mbox64->xfer_segment_hi = 0;
1128 mbox->m_out.xferaddr = 0xFFFFFFFF;
1129 break;
1130 default:
1131 mbox64->xfer_segment_lo = 0;
1132 mbox64->xfer_segment_hi = 0;
1133 }
1134
1135 /*
1136 * post the command
1137 */
1138 scb->state |= SCB_ISSUED;
1139
1140 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1141 mbox->m_in.poll = 0;
1142 mbox->m_in.ack = 0;
1143 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1144 }
1145 else {
1146 irq_enable(adapter);
1147 issue_command(adapter);
1148 }
1149
1150 return 0;
1151 }
1152
1153 /*
1154 * Wait until the controller's mailbox is available
1155 */
1156 static inline int
1157 mega_busywait_mbox (adapter_t *adapter)
1158 {
1159 if (adapter->mbox->m_in.busy)
1160 return __mega_busywait_mbox(adapter);
1161 return 0;
1162 }
1163
1164 /**
1165 * issue_scb_block()
1166 * @adapter - pointer to our soft state
1167 * @raw_mbox - the mailbox
1168 *
1169 * Issue a scb in synchronous and non-interrupt mode
1170 */
1171 static int
1172 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1173 {
1174 volatile mbox64_t *mbox64 = adapter->mbox64;
1175 volatile mbox_t *mbox = adapter->mbox;
1176 u8 byte;
1177
1178 /* Wait until mailbox is free */
1179 if(mega_busywait_mbox (adapter))
1180 goto bug_blocked_mailbox;
1181
1182 /* Copy mailbox data into host structure */
1183 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1184 mbox->m_out.cmdid = 0xFE;
1185 mbox->m_in.busy = 1;
1186
1187 switch (raw_mbox[0]) {
1188 case MEGA_MBOXCMD_LREAD64:
1189 case MEGA_MBOXCMD_LWRITE64:
1190 case MEGA_MBOXCMD_PASSTHRU64:
1191 case MEGA_MBOXCMD_EXTPTHRU:
1192 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1193 mbox64->xfer_segment_hi = 0;
1194 mbox->m_out.xferaddr = 0xFFFFFFFF;
1195 break;
1196 default:
1197 mbox64->xfer_segment_lo = 0;
1198 mbox64->xfer_segment_hi = 0;
1199 }
1200
1201 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1202 mbox->m_in.poll = 0;
1203 mbox->m_in.ack = 0;
1204 mbox->m_in.numstatus = 0xFF;
1205 mbox->m_in.status = 0xFF;
1206 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1207
1208 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1209 cpu_relax();
1210
1211 mbox->m_in.numstatus = 0xFF;
1212
1213 while( (volatile u8)mbox->m_in.poll != 0x77 )
1214 cpu_relax();
1215
1216 mbox->m_in.poll = 0;
1217 mbox->m_in.ack = 0x77;
1218
1219 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1220
1221 while(RDINDOOR(adapter) & 0x2)
1222 cpu_relax();
1223 }
1224 else {
1225 irq_disable(adapter);
1226 issue_command(adapter);
1227
1228 while (!((byte = irq_state(adapter)) & INTR_VALID))
1229 cpu_relax();
1230
1231 set_irq_state(adapter, byte);
1232 irq_enable(adapter);
1233 irq_ack(adapter);
1234 }
1235
1236 return mbox->m_in.status;
1237
1238 bug_blocked_mailbox:
1239 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1240 udelay (1000);
1241 return -1;
1242 }
1243
1244
1245 /**
1246 * megaraid_isr_iomapped()
1247 * @irq - irq
1248 * @devp - pointer to our soft state
1249 *
1250 * Interrupt service routine for io-mapped controllers.
1251 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1252 * and service the completed commands.
1253 */
1254 static irqreturn_t
1255 megaraid_isr_iomapped(int irq, void *devp)
1256 {
1257 adapter_t *adapter = devp;
1258 unsigned long flags;
1259 u8 status;
1260 u8 nstatus;
1261 u8 completed[MAX_FIRMWARE_STATUS];
1262 u8 byte;
1263 int handled = 0;
1264
1265
1266 /*
1267 * loop till F/W has more commands for us to complete.
1268 */
1269 spin_lock_irqsave(&adapter->lock, flags);
1270
1271 do {
1272 /* Check if a valid interrupt is pending */
1273 byte = irq_state(adapter);
1274 if( (byte & VALID_INTR_BYTE) == 0 ) {
1275 /*
1276 * No more pending commands
1277 */
1278 goto out_unlock;
1279 }
1280 set_irq_state(adapter, byte);
1281
1282 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1283 == 0xFF)
1284 cpu_relax();
1285 adapter->mbox->m_in.numstatus = 0xFF;
1286
1287 status = adapter->mbox->m_in.status;
1288
1289 /*
1290 * decrement the pending queue counter
1291 */
1292 atomic_sub(nstatus, &adapter->pend_cmds);
1293
1294 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1295 nstatus);
1296
1297 /* Acknowledge interrupt */
1298 irq_ack(adapter);
1299
1300 mega_cmd_done(adapter, completed, nstatus, status);
1301
1302 mega_rundoneq(adapter);
1303
1304 handled = 1;
1305
1306 /* Loop through any pending requests */
1307 if(atomic_read(&adapter->quiescent) == 0) {
1308 mega_runpendq(adapter);
1309 }
1310
1311 } while(1);
1312
1313 out_unlock:
1314
1315 spin_unlock_irqrestore(&adapter->lock, flags);
1316
1317 return IRQ_RETVAL(handled);
1318 }
1319
1320
1321 /**
1322 * megaraid_isr_memmapped()
1323 * @irq - irq
1324 * @devp - pointer to our soft state
1325 *
1326 * Interrupt service routine for memory-mapped controllers.
1327 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1328 * and service the completed commands.
1329 */
1330 static irqreturn_t
1331 megaraid_isr_memmapped(int irq, void *devp)
1332 {
1333 adapter_t *adapter = devp;
1334 unsigned long flags;
1335 u8 status;
1336 u32 dword = 0;
1337 u8 nstatus;
1338 u8 completed[MAX_FIRMWARE_STATUS];
1339 int handled = 0;
1340
1341
1342 /*
1343 * loop till F/W has more commands for us to complete.
1344 */
1345 spin_lock_irqsave(&adapter->lock, flags);
1346
1347 do {
1348 /* Check if a valid interrupt is pending */
1349 dword = RDOUTDOOR(adapter);
1350 if(dword != 0x10001234) {
1351 /*
1352 * No more pending commands
1353 */
1354 goto out_unlock;
1355 }
1356 WROUTDOOR(adapter, 0x10001234);
1357
1358 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1359 == 0xFF) {
1360 cpu_relax();
1361 }
1362 adapter->mbox->m_in.numstatus = 0xFF;
1363
1364 status = adapter->mbox->m_in.status;
1365
1366 /*
1367 * decrement the pending queue counter
1368 */
1369 atomic_sub(nstatus, &adapter->pend_cmds);
1370
1371 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1372 nstatus);
1373
1374 /* Acknowledge interrupt */
1375 WRINDOOR(adapter, 0x2);
1376
1377 handled = 1;
1378
1379 while( RDINDOOR(adapter) & 0x02 )
1380 cpu_relax();
1381
1382 mega_cmd_done(adapter, completed, nstatus, status);
1383
1384 mega_rundoneq(adapter);
1385
1386 /* Loop through any pending requests */
1387 if(atomic_read(&adapter->quiescent) == 0) {
1388 mega_runpendq(adapter);
1389 }
1390
1391 } while(1);
1392
1393 out_unlock:
1394
1395 spin_unlock_irqrestore(&adapter->lock, flags);
1396
1397 return IRQ_RETVAL(handled);
1398 }
1399 /**
1400 * mega_cmd_done()
1401 * @adapter - pointer to our soft state
1402 * @completed - array of ids of completed commands
1403 * @nstatus - number of completed commands
1404 * @status - status of the last command completed
1405 *
1406 * Complete the comamnds and call the scsi mid-layer callback hooks.
1407 */
1408 static void
1409 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1410 {
1411 mega_ext_passthru *epthru = NULL;
1412 struct scatterlist *sgl;
1413 Scsi_Cmnd *cmd = NULL;
1414 mega_passthru *pthru = NULL;
1415 mbox_t *mbox = NULL;
1416 u8 c;
1417 scb_t *scb;
1418 int islogical;
1419 int cmdid;
1420 int i;
1421
1422 /*
1423 * for all the commands completed, call the mid-layer callback routine
1424 * and free the scb.
1425 */
1426 for( i = 0; i < nstatus; i++ ) {
1427
1428 cmdid = completed[i];
1429
1430 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1431 scb = &adapter->int_scb;
1432 cmd = scb->cmd;
1433 mbox = (mbox_t *)scb->raw_mbox;
1434
1435 /*
1436 * Internal command interface do not fire the extended
1437 * passthru or 64-bit passthru
1438 */
1439 pthru = scb->pthru;
1440
1441 }
1442 else {
1443 scb = &adapter->scb_list[cmdid];
1444
1445 /*
1446 * Make sure f/w has completed a valid command
1447 */
1448 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1449 printk(KERN_CRIT
1450 "megaraid: invalid command ");
1451 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1452 cmdid, scb->state, scb->cmd);
1453
1454 continue;
1455 }
1456
1457 /*
1458 * Was a abort issued for this command
1459 */
1460 if( scb->state & SCB_ABORT ) {
1461
1462 printk(KERN_WARNING
1463 "megaraid: aborted cmd %lx[%x] complete.\n",
1464 scb->cmd->serial_number, scb->idx);
1465
1466 scb->cmd->result = (DID_ABORT << 16);
1467
1468 list_add_tail(SCSI_LIST(scb->cmd),
1469 &adapter->completed_list);
1470
1471 mega_free_scb(adapter, scb);
1472
1473 continue;
1474 }
1475
1476 /*
1477 * Was a reset issued for this command
1478 */
1479 if( scb->state & SCB_RESET ) {
1480
1481 printk(KERN_WARNING
1482 "megaraid: reset cmd %lx[%x] complete.\n",
1483 scb->cmd->serial_number, scb->idx);
1484
1485 scb->cmd->result = (DID_RESET << 16);
1486
1487 list_add_tail(SCSI_LIST(scb->cmd),
1488 &adapter->completed_list);
1489
1490 mega_free_scb (adapter, scb);
1491
1492 continue;
1493 }
1494
1495 cmd = scb->cmd;
1496 pthru = scb->pthru;
1497 epthru = scb->epthru;
1498 mbox = (mbox_t *)scb->raw_mbox;
1499
1500 #if MEGA_HAVE_STATS
1501 {
1502
1503 int logdrv = mbox->m_out.logdrv;
1504
1505 islogical = adapter->logdrv_chan[cmd->channel];
1506 /*
1507 * Maintain an error counter for the logical drive.
1508 * Some application like SNMP agent need such
1509 * statistics
1510 */
1511 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1512 cmd->cmnd[0] == READ_10 ||
1513 cmd->cmnd[0] == READ_12)) {
1514 /*
1515 * Logical drive number increases by 0x80 when
1516 * a logical drive is deleted
1517 */
1518 adapter->rd_errors[logdrv%0x80]++;
1519 }
1520
1521 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1522 cmd->cmnd[0] == WRITE_10 ||
1523 cmd->cmnd[0] == WRITE_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->wr_errors[logdrv%0x80]++;
1529 }
1530
1531 }
1532 #endif
1533 }
1534
1535 /*
1536 * Do not return the presence of hard disk on the channel so,
1537 * inquiry sent, and returned data==hard disk or removable
1538 * hard disk and not logical, request should return failure! -
1539 * PJ
1540 */
1541 islogical = adapter->logdrv_chan[cmd->device->channel];
1542 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1543
1544 sgl = scsi_sglist(cmd);
1545 if( sg_page(sgl) ) {
1546 c = *(unsigned char *) sg_virt(&sgl[0]);
1547 } else {
1548 printk(KERN_WARNING
1549 "megaraid: invalid sg.\n");
1550 c = 0;
1551 }
1552
1553 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1554 ((c & 0x1F ) == TYPE_DISK)) {
1555 status = 0xF0;
1556 }
1557 }
1558
1559 /* clear result; otherwise, success returns corrupt value */
1560 cmd->result = 0;
1561
1562 /* Convert MegaRAID status to Linux error code */
1563 switch (status) {
1564 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1565 cmd->result |= (DID_OK << 16);
1566 break;
1567
1568 case 0x02: /* ERROR_ABORTED, i.e.
1569 SCSI_STATUS_CHECK_CONDITION */
1570
1571 /* set sense_buffer and result fields */
1572 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1573 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1574
1575 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1576 14);
1577
1578 cmd->result = (DRIVER_SENSE << 24) |
1579 (DID_OK << 16) |
1580 (CHECK_CONDITION << 1);
1581 }
1582 else {
1583 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1584
1585 memcpy(cmd->sense_buffer,
1586 epthru->reqsensearea, 14);
1587
1588 cmd->result = (DRIVER_SENSE << 24) |
1589 (DID_OK << 16) |
1590 (CHECK_CONDITION << 1);
1591 } else {
1592 cmd->sense_buffer[0] = 0x70;
1593 cmd->sense_buffer[2] = ABORTED_COMMAND;
1594 cmd->result |= (CHECK_CONDITION << 1);
1595 }
1596 }
1597 break;
1598
1599 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1600 SCSI_STATUS_BUSY */
1601 cmd->result |= (DID_BUS_BUSY << 16) | status;
1602 break;
1603
1604 default:
1605 #if MEGA_HAVE_CLUSTERING
1606 /*
1607 * If TEST_UNIT_READY fails, we know
1608 * MEGA_RESERVATION_STATUS failed
1609 */
1610 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1611 cmd->result |= (DID_ERROR << 16) |
1612 (RESERVATION_CONFLICT << 1);
1613 }
1614 else
1615 /*
1616 * Error code returned is 1 if Reserve or Release
1617 * failed or the input parameter is invalid
1618 */
1619 if( status == 1 &&
1620 (cmd->cmnd[0] == RESERVE ||
1621 cmd->cmnd[0] == RELEASE) ) {
1622
1623 cmd->result |= (DID_ERROR << 16) |
1624 (RESERVATION_CONFLICT << 1);
1625 }
1626 else
1627 #endif
1628 cmd->result |= (DID_BAD_TARGET << 16)|status;
1629 }
1630
1631 /*
1632 * Only free SCBs for the commands coming down from the
1633 * mid-layer, not for which were issued internally
1634 *
1635 * For internal command, restore the status returned by the
1636 * firmware so that user can interpret it.
1637 */
1638 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1639 cmd->result = status;
1640
1641 /*
1642 * Remove the internal command from the pending list
1643 */
1644 list_del_init(&scb->list);
1645 scb->state = SCB_FREE;
1646 }
1647 else {
1648 mega_free_scb(adapter, scb);
1649 }
1650
1651 /* Add Scsi_Command to end of completed queue */
1652 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1653 }
1654 }
1655
1656
1657 /*
1658 * mega_runpendq()
1659 *
1660 * Run through the list of completed requests and finish it
1661 */
1662 static void
1663 mega_rundoneq (adapter_t *adapter)
1664 {
1665 Scsi_Cmnd *cmd;
1666 struct list_head *pos;
1667
1668 list_for_each(pos, &adapter->completed_list) {
1669
1670 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1671
1672 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1673 cmd->scsi_done(cmd);
1674 }
1675
1676 INIT_LIST_HEAD(&adapter->completed_list);
1677 }
1678
1679
1680 /*
1681 * Free a SCB structure
1682 * Note: We assume the scsi commands associated with this scb is not free yet.
1683 */
1684 static void
1685 mega_free_scb(adapter_t *adapter, scb_t *scb)
1686 {
1687 switch( scb->dma_type ) {
1688
1689 case MEGA_DMA_TYPE_NONE:
1690 break;
1691
1692 case MEGA_SGLIST:
1693 scsi_dma_unmap(scb->cmd);
1694 break;
1695 default:
1696 break;
1697 }
1698
1699 /*
1700 * Remove from the pending list
1701 */
1702 list_del_init(&scb->list);
1703
1704 /* Link the scb back into free list */
1705 scb->state = SCB_FREE;
1706 scb->cmd = NULL;
1707
1708 list_add(&scb->list, &adapter->free_list);
1709 }
1710
1711
1712 static int
1713 __mega_busywait_mbox (adapter_t *adapter)
1714 {
1715 volatile mbox_t *mbox = adapter->mbox;
1716 long counter;
1717
1718 for (counter = 0; counter < 10000; counter++) {
1719 if (!mbox->m_in.busy)
1720 return 0;
1721 udelay(100);
1722 cond_resched();
1723 }
1724 return -1; /* give up after 1 second */
1725 }
1726
1727 /*
1728 * Copies data to SGLIST
1729 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1730 */
1731 static int
1732 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1733 {
1734 struct scatterlist *sg;
1735 Scsi_Cmnd *cmd;
1736 int sgcnt;
1737 int idx;
1738
1739 cmd = scb->cmd;
1740
1741 /*
1742 * Copy Scatter-Gather list info into controller structure.
1743 *
1744 * The number of sg elements returned must not exceed our limit
1745 */
1746 sgcnt = scsi_dma_map(cmd);
1747
1748 scb->dma_type = MEGA_SGLIST;
1749
1750 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1751
1752 *len = 0;
1753
1754 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1755 sg = scsi_sglist(cmd);
1756 scb->dma_h_bulkdata = sg_dma_address(sg);
1757 *buf = (u32)scb->dma_h_bulkdata;
1758 *len = sg_dma_len(sg);
1759 return 0;
1760 }
1761
1762 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1763 if (adapter->has_64bit_addr) {
1764 scb->sgl64[idx].address = sg_dma_address(sg);
1765 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1766 } else {
1767 scb->sgl[idx].address = sg_dma_address(sg);
1768 *len += scb->sgl[idx].length = sg_dma_len(sg);
1769 }
1770 }
1771
1772 /* Reset pointer and length fields */
1773 *buf = scb->sgl_dma_addr;
1774
1775 /* Return count of SG requests */
1776 return sgcnt;
1777 }
1778
1779
1780 /*
1781 * mega_8_to_40ld()
1782 *
1783 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1784 * Enquiry3 structures for later use
1785 */
1786 static void
1787 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1788 mega_product_info *product_info)
1789 {
1790 int i;
1791
1792 product_info->max_commands = inquiry->adapter_info.max_commands;
1793 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1794 product_info->nchannels = inquiry->adapter_info.nchannels;
1795
1796 for (i = 0; i < 4; i++) {
1797 product_info->fw_version[i] =
1798 inquiry->adapter_info.fw_version[i];
1799
1800 product_info->bios_version[i] =
1801 inquiry->adapter_info.bios_version[i];
1802 }
1803 enquiry3->cache_flush_interval =
1804 inquiry->adapter_info.cache_flush_interval;
1805
1806 product_info->dram_size = inquiry->adapter_info.dram_size;
1807
1808 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1809
1810 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1811 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1812 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1813 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1814 }
1815
1816 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1817 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1818 }
1819
1820 static inline void
1821 mega_free_sgl(adapter_t *adapter)
1822 {
1823 scb_t *scb;
1824 int i;
1825
1826 for(i = 0; i < adapter->max_cmds; i++) {
1827
1828 scb = &adapter->scb_list[i];
1829
1830 if( scb->sgl64 ) {
1831 pci_free_consistent(adapter->dev,
1832 sizeof(mega_sgl64) * adapter->sglen,
1833 scb->sgl64,
1834 scb->sgl_dma_addr);
1835
1836 scb->sgl64 = NULL;
1837 }
1838
1839 if( scb->pthru ) {
1840 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1841 scb->pthru, scb->pthru_dma_addr);
1842
1843 scb->pthru = NULL;
1844 }
1845
1846 if( scb->epthru ) {
1847 pci_free_consistent(adapter->dev,
1848 sizeof(mega_ext_passthru),
1849 scb->epthru, scb->epthru_dma_addr);
1850
1851 scb->epthru = NULL;
1852 }
1853
1854 }
1855 }
1856
1857
1858 /*
1859 * Get information about the card/driver
1860 */
1861 const char *
1862 megaraid_info(struct Scsi_Host *host)
1863 {
1864 static char buffer[512];
1865 adapter_t *adapter;
1866
1867 adapter = (adapter_t *)host->hostdata;
1868
1869 sprintf (buffer,
1870 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1871 adapter->fw_version, adapter->product_info.max_commands,
1872 adapter->host->max_id, adapter->host->max_channel,
1873 adapter->host->max_lun);
1874 return buffer;
1875 }
1876
1877 /*
1878 * Abort a previous SCSI request. Only commands on the pending list can be
1879 * aborted. All the commands issued to the F/W must complete.
1880 */
1881 static int
1882 megaraid_abort(Scsi_Cmnd *cmd)
1883 {
1884 adapter_t *adapter;
1885 int rval;
1886
1887 adapter = (adapter_t *)cmd->device->host->hostdata;
1888
1889 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1890
1891 /*
1892 * This is required here to complete any completed requests
1893 * to be communicated over to the mid layer.
1894 */
1895 mega_rundoneq(adapter);
1896
1897 return rval;
1898 }
1899
1900
1901 static int
1902 megaraid_reset(struct scsi_cmnd *cmd)
1903 {
1904 adapter_t *adapter;
1905 megacmd_t mc;
1906 int rval;
1907
1908 adapter = (adapter_t *)cmd->device->host->hostdata;
1909
1910 #if MEGA_HAVE_CLUSTERING
1911 mc.cmd = MEGA_CLUSTER_CMD;
1912 mc.opcode = MEGA_RESET_RESERVATIONS;
1913
1914 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1915 printk(KERN_WARNING
1916 "megaraid: reservation reset failed.\n");
1917 }
1918 else {
1919 printk(KERN_INFO "megaraid: reservation reset.\n");
1920 }
1921 #endif
1922
1923 spin_lock_irq(&adapter->lock);
1924
1925 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1926
1927 /*
1928 * This is required here to complete any completed requests
1929 * to be communicated over to the mid layer.
1930 */
1931 mega_rundoneq(adapter);
1932 spin_unlock_irq(&adapter->lock);
1933
1934 return rval;
1935 }
1936
1937 /**
1938 * megaraid_abort_and_reset()
1939 * @adapter - megaraid soft state
1940 * @cmd - scsi command to be aborted or reset
1941 * @aor - abort or reset flag
1942 *
1943 * Try to locate the scsi command in the pending queue. If found and is not
1944 * issued to the controller, abort/reset it. Otherwise return failure
1945 */
1946 static int
1947 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1948 {
1949 struct list_head *pos, *next;
1950 scb_t *scb;
1951
1952 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1953 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1954 cmd->cmnd[0], cmd->device->channel,
1955 cmd->device->id, cmd->device->lun);
1956
1957 if(list_empty(&adapter->pending_list))
1958 return FALSE;
1959
1960 list_for_each_safe(pos, next, &adapter->pending_list) {
1961
1962 scb = list_entry(pos, scb_t, list);
1963
1964 if (scb->cmd == cmd) { /* Found command */
1965
1966 scb->state |= aor;
1967
1968 /*
1969 * Check if this command has firmare owenership. If
1970 * yes, we cannot reset this command. Whenever, f/w
1971 * completes this command, we will return appropriate
1972 * status from ISR.
1973 */
1974 if( scb->state & SCB_ISSUED ) {
1975
1976 printk(KERN_WARNING
1977 "megaraid: %s-%lx[%x], fw owner.\n",
1978 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1979 cmd->serial_number, scb->idx);
1980
1981 return FALSE;
1982 }
1983 else {
1984
1985 /*
1986 * Not yet issued! Remove from the pending
1987 * list
1988 */
1989 printk(KERN_WARNING
1990 "megaraid: %s-%lx[%x], driver owner.\n",
1991 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1992 cmd->serial_number, scb->idx);
1993
1994 mega_free_scb(adapter, scb);
1995
1996 if( aor == SCB_ABORT ) {
1997 cmd->result = (DID_ABORT << 16);
1998 }
1999 else {
2000 cmd->result = (DID_RESET << 16);
2001 }
2002
2003 list_add_tail(SCSI_LIST(cmd),
2004 &adapter->completed_list);
2005
2006 return TRUE;
2007 }
2008 }
2009 }
2010
2011 return FALSE;
2012 }
2013
2014 static inline int
2015 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2016 {
2017 *pdev = alloc_pci_dev();
2018
2019 if( *pdev == NULL ) return -1;
2020
2021 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2022
2023 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2024 kfree(*pdev);
2025 return -1;
2026 }
2027
2028 return 0;
2029 }
2030
2031 static inline void
2032 free_local_pdev(struct pci_dev *pdev)
2033 {
2034 kfree(pdev);
2035 }
2036
2037 /**
2038 * mega_allocate_inquiry()
2039 * @dma_handle - handle returned for dma address
2040 * @pdev - handle to pci device
2041 *
2042 * allocates memory for inquiry structure
2043 */
2044 static inline void *
2045 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2046 {
2047 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2048 }
2049
2050
2051 static inline void
2052 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2053 {
2054 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2055 }
2056
2057
2058 #ifdef CONFIG_PROC_FS
2059 /* Following code handles /proc fs */
2060
2061 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2062 S_IRUSR | S_IFREG, \
2063 controller_proc_dir_entry, \
2064 func, adapter)
2065
2066 /**
2067 * mega_create_proc_entry()
2068 * @index - index in soft state array
2069 * @parent - parent node for this /proc entry
2070 *
2071 * Creates /proc entries for our controllers.
2072 */
2073 static void
2074 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2075 {
2076 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2077 u8 string[64] = { 0 };
2078 adapter_t *adapter = hba_soft_state[index];
2079
2080 sprintf(string, "hba%d", adapter->host->host_no);
2081
2082 controller_proc_dir_entry =
2083 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2084
2085 if(!controller_proc_dir_entry) {
2086 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2087 return;
2088 }
2089 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2090 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2091 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2092 #if MEGA_HAVE_ENH_PROC
2093 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2094 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2095 proc_battery);
2096
2097 /*
2098 * Display each physical drive on its channel
2099 */
2100 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2101 proc_pdrv_ch0);
2102 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2103 proc_pdrv_ch1);
2104 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2105 proc_pdrv_ch2);
2106 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2107 proc_pdrv_ch3);
2108
2109 /*
2110 * Display a set of up to 10 logical drive through each of following
2111 * /proc entries
2112 */
2113 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2114 proc_rdrv_10);
2115 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2116 proc_rdrv_20);
2117 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2118 proc_rdrv_30);
2119 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2120 proc_rdrv_40);
2121 #endif
2122 }
2123
2124
2125 /**
2126 * proc_read_config()
2127 * @page - buffer to write the data in
2128 * @start - where the actual data has been written in page
2129 * @offset - same meaning as the read system call
2130 * @count - same meaning as the read system call
2131 * @eof - set if no more data needs to be returned
2132 * @data - pointer to our soft state
2133 *
2134 * Display configuration information about the controller.
2135 */
2136 static int
2137 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2138 void *data)
2139 {
2140
2141 adapter_t *adapter = (adapter_t *)data;
2142 int len = 0;
2143
2144 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2145
2146 if(adapter->product_info.product_name[0])
2147 len += sprintf(page+len, "%s\n",
2148 adapter->product_info.product_name);
2149
2150 len += sprintf(page+len, "Controller Type: ");
2151
2152 if( adapter->flag & BOARD_MEMMAP ) {
2153 len += sprintf(page+len,
2154 "438/466/467/471/493/518/520/531/532\n");
2155 }
2156 else {
2157 len += sprintf(page+len,
2158 "418/428/434\n");
2159 }
2160
2161 if(adapter->flag & BOARD_40LD) {
2162 len += sprintf(page+len,
2163 "Controller Supports 40 Logical Drives\n");
2164 }
2165
2166 if(adapter->flag & BOARD_64BIT) {
2167 len += sprintf(page+len,
2168 "Controller capable of 64-bit memory addressing\n");
2169 }
2170 if( adapter->has_64bit_addr ) {
2171 len += sprintf(page+len,
2172 "Controller using 64-bit memory addressing\n");
2173 }
2174 else {
2175 len += sprintf(page+len,
2176 "Controller is not using 64-bit memory addressing\n");
2177 }
2178
2179 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2180 adapter->host->irq);
2181
2182 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2183 adapter->numldrv, adapter->product_info.nchannels);
2184
2185 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2186 adapter->fw_version, adapter->bios_version,
2187 adapter->product_info.dram_size);
2188
2189 len += sprintf(page+len,
2190 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2191 adapter->product_info.max_commands, adapter->max_cmds);
2192
2193 len += sprintf(page+len, "support_ext_cdb = %d\n",
2194 adapter->support_ext_cdb);
2195 len += sprintf(page+len, "support_random_del = %d\n",
2196 adapter->support_random_del);
2197 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2198 adapter->boot_ldrv_enabled);
2199 len += sprintf(page+len, "boot_ldrv = %d\n",
2200 adapter->boot_ldrv);
2201 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2202 adapter->boot_pdrv_enabled);
2203 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2204 adapter->boot_pdrv_ch);
2205 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2206 adapter->boot_pdrv_tgt);
2207 len += sprintf(page+len, "quiescent = %d\n",
2208 atomic_read(&adapter->quiescent));
2209 len += sprintf(page+len, "has_cluster = %d\n",
2210 adapter->has_cluster);
2211
2212 len += sprintf(page+len, "\nModule Parameters:\n");
2213 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2214 max_cmd_per_lun);
2215 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2216 max_sectors_per_io);
2217
2218 *eof = 1;
2219
2220 return len;
2221 }
2222
2223
2224
2225 /**
2226 * proc_read_stat()
2227 * @page - buffer to write the data in
2228 * @start - where the actual data has been written in page
2229 * @offset - same meaning as the read system call
2230 * @count - same meaning as the read system call
2231 * @eof - set if no more data needs to be returned
2232 * @data - pointer to our soft state
2233 *
2234 * Diaplay statistical information about the I/O activity.
2235 */
2236 static int
2237 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2238 void *data)
2239 {
2240 adapter_t *adapter;
2241 int len;
2242 int i;
2243
2244 i = 0; /* avoid compilation warnings */
2245 len = 0;
2246 adapter = (adapter_t *)data;
2247
2248 len = sprintf(page, "Statistical Information for this controller\n");
2249 len += sprintf(page+len, "pend_cmds = %d\n",
2250 atomic_read(&adapter->pend_cmds));
2251 #if MEGA_HAVE_STATS
2252 for(i = 0; i < adapter->numldrv; i++) {
2253 len += sprintf(page+len, "Logical Drive %d:\n", i);
2254
2255 len += sprintf(page+len,
2256 "\tReads Issued = %lu, Writes Issued = %lu\n",
2257 adapter->nreads[i], adapter->nwrites[i]);
2258
2259 len += sprintf(page+len,
2260 "\tSectors Read = %lu, Sectors Written = %lu\n",
2261 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2262
2263 len += sprintf(page+len,
2264 "\tRead errors = %lu, Write errors = %lu\n\n",
2265 adapter->rd_errors[i], adapter->wr_errors[i]);
2266 }
2267 #else
2268 len += sprintf(page+len,
2269 "IO and error counters not compiled in driver.\n");
2270 #endif
2271
2272 *eof = 1;
2273
2274 return len;
2275 }
2276
2277
2278 /**
2279 * proc_read_mbox()
2280 * @page - buffer to write the data in
2281 * @start - where the actual data has been written in page
2282 * @offset - same meaning as the read system call
2283 * @count - same meaning as the read system call
2284 * @eof - set if no more data needs to be returned
2285 * @data - pointer to our soft state
2286 *
2287 * Display mailbox information for the last command issued. This information
2288 * is good for debugging.
2289 */
2290 static int
2291 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2292 void *data)
2293 {
2294
2295 adapter_t *adapter = (adapter_t *)data;
2296 volatile mbox_t *mbox = adapter->mbox;
2297 int len = 0;
2298
2299 len = sprintf(page, "Contents of Mail Box Structure\n");
2300 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2301 mbox->m_out.cmd);
2302 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2303 mbox->m_out.cmdid);
2304 len += sprintf(page+len, " No of Sectors= %04d\n",
2305 mbox->m_out.numsectors);
2306 len += sprintf(page+len, " LBA = 0x%02x\n",
2307 mbox->m_out.lba);
2308 len += sprintf(page+len, " DTA = 0x%08x\n",
2309 mbox->m_out.xferaddr);
2310 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2311 mbox->m_out.logdrv);
2312 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2313 mbox->m_out.numsgelements);
2314 len += sprintf(page+len, " Busy = %01x\n",
2315 mbox->m_in.busy);
2316 len += sprintf(page+len, " Status = 0x%02x\n",
2317 mbox->m_in.status);
2318
2319 *eof = 1;
2320
2321 return len;
2322 }
2323
2324
2325 /**
2326 * proc_rebuild_rate()
2327 * @page - buffer to write the data in
2328 * @start - where the actual data has been written in page
2329 * @offset - same meaning as the read system call
2330 * @count - same meaning as the read system call
2331 * @eof - set if no more data needs to be returned
2332 * @data - pointer to our soft state
2333 *
2334 * Display current rebuild rate
2335 */
2336 static int
2337 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2338 void *data)
2339 {
2340 adapter_t *adapter = (adapter_t *)data;
2341 dma_addr_t dma_handle;
2342 caddr_t inquiry;
2343 struct pci_dev *pdev;
2344 int len = 0;
2345
2346 if( make_local_pdev(adapter, &pdev) != 0 ) {
2347 *eof = 1;
2348 return len;
2349 }
2350
2351 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2352 free_local_pdev(pdev);
2353 *eof = 1;
2354 return len;
2355 }
2356
2357 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2358
2359 len = sprintf(page, "Adapter inquiry failed.\n");
2360
2361 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2362
2363 mega_free_inquiry(inquiry, dma_handle, pdev);
2364
2365 free_local_pdev(pdev);
2366
2367 *eof = 1;
2368
2369 return len;
2370 }
2371
2372 if( adapter->flag & BOARD_40LD ) {
2373 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2374 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2375 }
2376 else {
2377 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2378 ((mraid_ext_inquiry *)
2379 inquiry)->raid_inq.adapter_info.rebuild_rate);
2380 }
2381
2382
2383 mega_free_inquiry(inquiry, dma_handle, pdev);
2384
2385 free_local_pdev(pdev);
2386
2387 *eof = 1;
2388
2389 return len;
2390 }
2391
2392
2393 /**
2394 * proc_battery()
2395 * @page - buffer to write the data in
2396 * @start - where the actual data has been written in page
2397 * @offset - same meaning as the read system call
2398 * @count - same meaning as the read system call
2399 * @eof - set if no more data needs to be returned
2400 * @data - pointer to our soft state
2401 *
2402 * Display information about the battery module on the controller.
2403 */
2404 static int
2405 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2406 void *data)
2407 {
2408 adapter_t *adapter = (adapter_t *)data;
2409 dma_addr_t dma_handle;
2410 caddr_t inquiry;
2411 struct pci_dev *pdev;
2412 u8 battery_status = 0;
2413 char str[256];
2414 int len = 0;
2415
2416 if( make_local_pdev(adapter, &pdev) != 0 ) {
2417 *eof = 1;
2418 return len;
2419 }
2420
2421 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2422 free_local_pdev(pdev);
2423 *eof = 1;
2424 return len;
2425 }
2426
2427 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2428
2429 len = sprintf(page, "Adapter inquiry failed.\n");
2430
2431 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2432
2433 mega_free_inquiry(inquiry, dma_handle, pdev);
2434
2435 free_local_pdev(pdev);
2436
2437 *eof = 1;
2438
2439 return len;
2440 }
2441
2442 if( adapter->flag & BOARD_40LD ) {
2443 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2444 }
2445 else {
2446 battery_status = ((mraid_ext_inquiry *)inquiry)->
2447 raid_inq.adapter_info.battery_status;
2448 }
2449
2450 /*
2451 * Decode the battery status
2452 */
2453 sprintf(str, "Battery Status:[%d]", battery_status);
2454
2455 if(battery_status == MEGA_BATT_CHARGE_DONE)
2456 strcat(str, " Charge Done");
2457
2458 if(battery_status & MEGA_BATT_MODULE_MISSING)
2459 strcat(str, " Module Missing");
2460
2461 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2462 strcat(str, " Low Voltage");
2463
2464 if(battery_status & MEGA_BATT_TEMP_HIGH)
2465 strcat(str, " Temperature High");
2466
2467 if(battery_status & MEGA_BATT_PACK_MISSING)
2468 strcat(str, " Pack Missing");
2469
2470 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2471 strcat(str, " Charge In-progress");
2472
2473 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2474 strcat(str, " Charge Fail");
2475
2476 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2477 strcat(str, " Cycles Exceeded");
2478
2479 len = sprintf(page, "%s\n", str);
2480
2481
2482 mega_free_inquiry(inquiry, dma_handle, pdev);
2483
2484 free_local_pdev(pdev);
2485
2486 *eof = 1;
2487
2488 return len;
2489 }
2490
2491
2492 /**
2493 * proc_pdrv_ch0()
2494 * @page - buffer to write the data in
2495 * @start - where the actual data has been written in page
2496 * @offset - same meaning as the read system call
2497 * @count - same meaning as the read system call
2498 * @eof - set if no more data needs to be returned
2499 * @data - pointer to our soft state
2500 *
2501 * Display information about the physical drives on physical channel 0.
2502 */
2503 static int
2504 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2505 void *data)
2506 {
2507 adapter_t *adapter = (adapter_t *)data;
2508
2509 *eof = 1;
2510
2511 return (proc_pdrv(adapter, page, 0));
2512 }
2513
2514
2515 /**
2516 * proc_pdrv_ch1()
2517 * @page - buffer to write the data in
2518 * @start - where the actual data has been written in page
2519 * @offset - same meaning as the read system call
2520 * @count - same meaning as the read system call
2521 * @eof - set if no more data needs to be returned
2522 * @data - pointer to our soft state
2523 *
2524 * Display information about the physical drives on physical channel 1.
2525 */
2526 static int
2527 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2528 void *data)
2529 {
2530 adapter_t *adapter = (adapter_t *)data;
2531
2532 *eof = 1;
2533
2534 return (proc_pdrv(adapter, page, 1));
2535 }
2536
2537
2538 /**
2539 * proc_pdrv_ch2()
2540 * @page - buffer to write the data in
2541 * @start - where the actual data has been written in page
2542 * @offset - same meaning as the read system call
2543 * @count - same meaning as the read system call
2544 * @eof - set if no more data needs to be returned
2545 * @data - pointer to our soft state
2546 *
2547 * Display information about the physical drives on physical channel 2.
2548 */
2549 static int
2550 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2551 void *data)
2552 {
2553 adapter_t *adapter = (adapter_t *)data;
2554
2555 *eof = 1;
2556
2557 return (proc_pdrv(adapter, page, 2));
2558 }
2559
2560
2561 /**
2562 * proc_pdrv_ch3()
2563 * @page - buffer to write the data in
2564 * @start - where the actual data has been written in page
2565 * @offset - same meaning as the read system call
2566 * @count - same meaning as the read system call
2567 * @eof - set if no more data needs to be returned
2568 * @data - pointer to our soft state
2569 *
2570 * Display information about the physical drives on physical channel 3.
2571 */
2572 static int
2573 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2574 void *data)
2575 {
2576 adapter_t *adapter = (adapter_t *)data;
2577
2578 *eof = 1;
2579
2580 return (proc_pdrv(adapter, page, 3));
2581 }
2582
2583
2584 /**
2585 * proc_pdrv()
2586 * @page - buffer to write the data in
2587 * @adapter - pointer to our soft state
2588 *
2589 * Display information about the physical drives.
2590 */
2591 static int
2592 proc_pdrv(adapter_t *adapter, char *page, int channel)
2593 {
2594 dma_addr_t dma_handle;
2595 char *scsi_inq;
2596 dma_addr_t scsi_inq_dma_handle;
2597 caddr_t inquiry;
2598 struct pci_dev *pdev;
2599 u8 *pdrv_state;
2600 u8 state;
2601 int tgt;
2602 int max_channels;
2603 int len = 0;
2604 char str[80];
2605 int i;
2606
2607 if( make_local_pdev(adapter, &pdev) != 0 ) {
2608 return len;
2609 }
2610
2611 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2612 goto free_pdev;
2613 }
2614
2615 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2616 len = sprintf(page, "Adapter inquiry failed.\n");
2617
2618 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2619
2620 goto free_inquiry;
2621 }
2622
2623
2624 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2625
2626 if( scsi_inq == NULL ) {
2627 len = sprintf(page, "memory not available for scsi inq.\n");
2628
2629 goto free_inquiry;
2630 }
2631
2632 if( adapter->flag & BOARD_40LD ) {
2633 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2634 }
2635 else {
2636 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2637 raid_inq.pdrv_info.pdrv_state;
2638 }
2639
2640 max_channels = adapter->product_info.nchannels;
2641
2642 if( channel >= max_channels ) {
2643 goto free_pci;
2644 }
2645
2646 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2647
2648 i = channel*16 + tgt;
2649
2650 state = *(pdrv_state + i);
2651
2652 switch( state & 0x0F ) {
2653
2654 case PDRV_ONLINE:
2655 sprintf(str,
2656 "Channel:%2d Id:%2d State: Online",
2657 channel, tgt);
2658 break;
2659
2660 case PDRV_FAILED:
2661 sprintf(str,
2662 "Channel:%2d Id:%2d State: Failed",
2663 channel, tgt);
2664 break;
2665
2666 case PDRV_RBLD:
2667 sprintf(str,
2668 "Channel:%2d Id:%2d State: Rebuild",
2669 channel, tgt);
2670 break;
2671
2672 case PDRV_HOTSPARE:
2673 sprintf(str,
2674 "Channel:%2d Id:%2d State: Hot spare",
2675 channel, tgt);
2676 break;
2677
2678 default:
2679 sprintf(str,
2680 "Channel:%2d Id:%2d State: Un-configured",
2681 channel, tgt);
2682 break;
2683
2684 }
2685
2686 /*
2687 * This interface displays inquiries for disk drives
2688 * only. Inquries for logical drives and non-disk
2689 * devices are available through /proc/scsi/scsi
2690 */
2691 memset(scsi_inq, 0, 256);
2692 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2693 scsi_inq_dma_handle) ||
2694 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2695 continue;
2696 }
2697
2698 /*
2699 * Check for overflow. We print less than 240
2700 * characters for inquiry
2701 */
2702 if( (len + 240) >= PAGE_SIZE ) break;
2703
2704 len += sprintf(page+len, "%s.\n", str);
2705
2706 len += mega_print_inquiry(page+len, scsi_inq);
2707 }
2708
2709 free_pci:
2710 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2711 free_inquiry:
2712 mega_free_inquiry(inquiry, dma_handle, pdev);
2713 free_pdev:
2714 free_local_pdev(pdev);
2715
2716 return len;
2717 }
2718
2719
2720 /*
2721 * Display scsi inquiry
2722 */
2723 static int
2724 mega_print_inquiry(char *page, char *scsi_inq)
2725 {
2726 int len = 0;
2727 int i;
2728
2729 len = sprintf(page, " Vendor: ");
2730 for( i = 8; i < 16; i++ ) {
2731 len += sprintf(page+len, "%c", scsi_inq[i]);
2732 }
2733
2734 len += sprintf(page+len, " Model: ");
2735
2736 for( i = 16; i < 32; i++ ) {
2737 len += sprintf(page+len, "%c", scsi_inq[i]);
2738 }
2739
2740 len += sprintf(page+len, " Rev: ");
2741
2742 for( i = 32; i < 36; i++ ) {
2743 len += sprintf(page+len, "%c", scsi_inq[i]);
2744 }
2745
2746 len += sprintf(page+len, "\n");
2747
2748 i = scsi_inq[0] & 0x1f;
2749
2750 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2751
2752 len += sprintf(page+len,
2753 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2754
2755 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2756 len += sprintf(page+len, " CCS\n");
2757 else
2758 len += sprintf(page+len, "\n");
2759
2760 return len;
2761 }
2762
2763
2764 /**
2765 * proc_rdrv_10()
2766 * @page - buffer to write the data in
2767 * @start - where the actual data has been written in page
2768 * @offset - same meaning as the read system call
2769 * @count - same meaning as the read system call
2770 * @eof - set if no more data needs to be returned
2771 * @data - pointer to our soft state
2772 *
2773 * Display real time information about the logical drives 0 through 9.
2774 */
2775 static int
2776 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2777 void *data)
2778 {
2779 adapter_t *adapter = (adapter_t *)data;
2780
2781 *eof = 1;
2782
2783 return (proc_rdrv(adapter, page, 0, 9));
2784 }
2785
2786
2787 /**
2788 * proc_rdrv_20()
2789 * @page - buffer to write the data in
2790 * @start - where the actual data has been written in page
2791 * @offset - same meaning as the read system call
2792 * @count - same meaning as the read system call
2793 * @eof - set if no more data needs to be returned
2794 * @data - pointer to our soft state
2795 *
2796 * Display real time information about the logical drives 0 through 9.
2797 */
2798 static int
2799 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2800 void *data)
2801 {
2802 adapter_t *adapter = (adapter_t *)data;
2803
2804 *eof = 1;
2805
2806 return (proc_rdrv(adapter, page, 10, 19));
2807 }
2808
2809
2810 /**
2811 * proc_rdrv_30()
2812 * @page - buffer to write the data in
2813 * @start - where the actual data has been written in page
2814 * @offset - same meaning as the read system call
2815 * @count - same meaning as the read system call
2816 * @eof - set if no more data needs to be returned
2817 * @data - pointer to our soft state
2818 *
2819 * Display real time information about the logical drives 0 through 9.
2820 */
2821 static int
2822 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2823 void *data)
2824 {
2825 adapter_t *adapter = (adapter_t *)data;
2826
2827 *eof = 1;
2828
2829 return (proc_rdrv(adapter, page, 20, 29));
2830 }
2831
2832
2833 /**
2834 * proc_rdrv_40()
2835 * @page - buffer to write the data in
2836 * @start - where the actual data has been written in page
2837 * @offset - same meaning as the read system call
2838 * @count - same meaning as the read system call
2839 * @eof - set if no more data needs to be returned
2840 * @data - pointer to our soft state
2841 *
2842 * Display real time information about the logical drives 0 through 9.
2843 */
2844 static int
2845 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2846 void *data)
2847 {
2848 adapter_t *adapter = (adapter_t *)data;
2849
2850 *eof = 1;
2851
2852 return (proc_rdrv(adapter, page, 30, 39));
2853 }
2854
2855
2856 /**
2857 * proc_rdrv()
2858 * @page - buffer to write the data in
2859 * @adapter - pointer to our soft state
2860 * @start - starting logical drive to display
2861 * @end - ending logical drive to display
2862 *
2863 * We do not print the inquiry information since its already available through
2864 * /proc/scsi/scsi interface
2865 */
2866 static int
2867 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2868 {
2869 dma_addr_t dma_handle;
2870 logdrv_param *lparam;
2871 megacmd_t mc;
2872 char *disk_array;
2873 dma_addr_t disk_array_dma_handle;
2874 caddr_t inquiry;
2875 struct pci_dev *pdev;
2876 u8 *rdrv_state;
2877 int num_ldrv;
2878 u32 array_sz;
2879 int len = 0;
2880 int i;
2881
2882 if( make_local_pdev(adapter, &pdev) != 0 ) {
2883 return len;
2884 }
2885
2886 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2887 free_local_pdev(pdev);
2888 return len;
2889 }
2890
2891 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2892
2893 len = sprintf(page, "Adapter inquiry failed.\n");
2894
2895 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2896
2897 mega_free_inquiry(inquiry, dma_handle, pdev);
2898
2899 free_local_pdev(pdev);
2900
2901 return len;
2902 }
2903
2904 memset(&mc, 0, sizeof(megacmd_t));
2905
2906 if( adapter->flag & BOARD_40LD ) {
2907 array_sz = sizeof(disk_array_40ld);
2908
2909 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2910
2911 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2912 }
2913 else {
2914 array_sz = sizeof(disk_array_8ld);
2915
2916 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2917 raid_inq.logdrv_info.ldrv_state;
2918
2919 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2920 raid_inq.logdrv_info.num_ldrv;
2921 }
2922
2923 disk_array = pci_alloc_consistent(pdev, array_sz,
2924 &disk_array_dma_handle);
2925
2926 if( disk_array == NULL ) {
2927 len = sprintf(page, "memory not available.\n");
2928
2929 mega_free_inquiry(inquiry, dma_handle, pdev);
2930
2931 free_local_pdev(pdev);
2932
2933 return len;
2934 }
2935
2936 mc.xferaddr = (u32)disk_array_dma_handle;
2937
2938 if( adapter->flag & BOARD_40LD ) {
2939 mc.cmd = FC_NEW_CONFIG;
2940 mc.opcode = OP_DCMD_READ_CONFIG;
2941
2942 if( mega_internal_command(adapter, &mc, NULL) ) {
2943
2944 len = sprintf(page, "40LD read config failed.\n");
2945
2946 mega_free_inquiry(inquiry, dma_handle, pdev);
2947
2948 pci_free_consistent(pdev, array_sz, disk_array,
2949 disk_array_dma_handle);
2950
2951 free_local_pdev(pdev);
2952
2953 return len;
2954 }
2955
2956 }
2957 else {
2958 mc.cmd = NEW_READ_CONFIG_8LD;
2959
2960 if( mega_internal_command(adapter, &mc, NULL) ) {
2961
2962 mc.cmd = READ_CONFIG_8LD;
2963
2964 if( mega_internal_command(adapter, &mc,
2965 NULL) ){
2966
2967 len = sprintf(page,
2968 "8LD read config failed.\n");
2969
2970 mega_free_inquiry(inquiry, dma_handle, pdev);
2971
2972 pci_free_consistent(pdev, array_sz,
2973 disk_array,
2974 disk_array_dma_handle);
2975
2976 free_local_pdev(pdev);
2977
2978 return len;
2979 }
2980 }
2981 }
2982
2983 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2984
2985 if( adapter->flag & BOARD_40LD ) {
2986 lparam =
2987 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2988 }
2989 else {
2990 lparam =
2991 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2992 }
2993
2994 /*
2995 * Check for overflow. We print less than 240 characters for
2996 * information about each logical drive.
2997 */
2998 if( (len + 240) >= PAGE_SIZE ) break;
2999
3000 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3001
3002 switch( rdrv_state[i] & 0x0F ) {
3003 case RDRV_OFFLINE:
3004 len += sprintf(page+len, "state: offline");
3005 break;
3006
3007 case RDRV_DEGRADED:
3008 len += sprintf(page+len, "state: degraded");
3009 break;
3010
3011 case RDRV_OPTIMAL:
3012 len += sprintf(page+len, "state: optimal");
3013 break;
3014
3015 case RDRV_DELETED:
3016 len += sprintf(page+len, "state: deleted");
3017 break;
3018
3019 default:
3020 len += sprintf(page+len, "state: unknown");
3021 break;
3022 }
3023
3024 /*
3025 * Check if check consistency or initialization is going on
3026 * for this logical drive.
3027 */
3028 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3029 len += sprintf(page+len,
3030 ", check-consistency in progress");
3031 }
3032 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3033 len += sprintf(page+len,
3034 ", initialization in progress");
3035 }
3036
3037 len += sprintf(page+len, "\n");
3038
3039 len += sprintf(page+len, "Span depth:%3d, ",
3040 lparam->span_depth);
3041
3042 len += sprintf(page+len, "RAID level:%3d, ",
3043 lparam->level);
3044
3045 len += sprintf(page+len, "Stripe size:%3d, ",
3046 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3047
3048 len += sprintf(page+len, "Row size:%3d\n",
3049 lparam->row_size);
3050
3051
3052 len += sprintf(page+len, "Read Policy: ");
3053
3054 switch(lparam->read_ahead) {
3055
3056 case NO_READ_AHEAD:
3057 len += sprintf(page+len, "No read ahead, ");
3058 break;
3059
3060 case READ_AHEAD:
3061 len += sprintf(page+len, "Read ahead, ");
3062 break;
3063
3064 case ADAP_READ_AHEAD:
3065 len += sprintf(page+len, "Adaptive, ");
3066 break;
3067
3068 }
3069
3070 len += sprintf(page+len, "Write Policy: ");
3071
3072 switch(lparam->write_mode) {
3073
3074 case WRMODE_WRITE_THRU:
3075 len += sprintf(page+len, "Write thru, ");
3076 break;
3077
3078 case WRMODE_WRITE_BACK:
3079 len += sprintf(page+len, "Write back, ");
3080 break;
3081 }
3082
3083 len += sprintf(page+len, "Cache Policy: ");
3084
3085 switch(lparam->direct_io) {
3086
3087 case CACHED_IO:
3088 len += sprintf(page+len, "Cached IO\n\n");
3089 break;
3090
3091 case DIRECT_IO:
3092 len += sprintf(page+len, "Direct IO\n\n");
3093 break;
3094 }
3095 }
3096
3097 mega_free_inquiry(inquiry, dma_handle, pdev);
3098
3099 pci_free_consistent(pdev, array_sz, disk_array,
3100 disk_array_dma_handle);
3101
3102 free_local_pdev(pdev);
3103
3104 return len;
3105 }
3106 #else
3107 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3108 {
3109 }
3110 #endif
3111
3112
3113 /**
3114 * megaraid_biosparam()
3115 *
3116 * Return the disk geometry for a particular disk
3117 */
3118 static int
3119 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3120 sector_t capacity, int geom[])
3121 {
3122 adapter_t *adapter;
3123 unsigned char *bh;
3124 int heads;
3125 int sectors;
3126 int cylinders;
3127 int rval;
3128
3129 /* Get pointer to host config structure */
3130 adapter = (adapter_t *)sdev->host->hostdata;
3131
3132 if (IS_RAID_CH(adapter, sdev->channel)) {
3133 /* Default heads (64) & sectors (32) */
3134 heads = 64;
3135 sectors = 32;
3136 cylinders = (ulong)capacity / (heads * sectors);
3137
3138 /*
3139 * Handle extended translation size for logical drives
3140 * > 1Gb
3141 */
3142 if ((ulong)capacity >= 0x200000) {
3143 heads = 255;
3144 sectors = 63;
3145 cylinders = (ulong)capacity / (heads * sectors);
3146 }
3147
3148 /* return result */
3149 geom[0] = heads;
3150 geom[1] = sectors;
3151 geom[2] = cylinders;
3152 }
3153 else {
3154 bh = scsi_bios_ptable(bdev);
3155
3156 if( bh ) {
3157 rval = scsi_partsize(bh, capacity,
3158 &geom[2], &geom[0], &geom[1]);
3159 kfree(bh);
3160 if( rval != -1 )
3161 return rval;
3162 }
3163
3164 printk(KERN_INFO
3165 "megaraid: invalid partition on this disk on channel %d\n",
3166 sdev->channel);
3167
3168 /* Default heads (64) & sectors (32) */
3169 heads = 64;
3170 sectors = 32;
3171 cylinders = (ulong)capacity / (heads * sectors);
3172
3173 /* Handle extended translation size for logical drives > 1Gb */
3174 if ((ulong)capacity >= 0x200000) {
3175 heads = 255;
3176 sectors = 63;
3177 cylinders = (ulong)capacity / (heads * sectors);
3178 }
3179
3180 /* return result */
3181 geom[0] = heads;
3182 geom[1] = sectors;
3183 geom[2] = cylinders;
3184 }
3185
3186 return 0;
3187 }
3188
3189 /**
3190 * mega_init_scb()
3191 * @adapter - pointer to our soft state
3192 *
3193 * Allocate memory for the various pointers in the scb structures:
3194 * scatter-gather list pointer, passthru and extended passthru structure
3195 * pointers.
3196 */
3197 static int
3198 mega_init_scb(adapter_t *adapter)
3199 {
3200 scb_t *scb;
3201 int i;
3202
3203 for( i = 0; i < adapter->max_cmds; i++ ) {
3204
3205 scb = &adapter->scb_list[i];
3206
3207 scb->sgl64 = NULL;
3208 scb->sgl = NULL;
3209 scb->pthru = NULL;
3210 scb->epthru = NULL;
3211 }
3212
3213 for( i = 0; i < adapter->max_cmds; i++ ) {
3214
3215 scb = &adapter->scb_list[i];
3216
3217 scb->idx = i;
3218
3219 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3220 sizeof(mega_sgl64) * adapter->sglen,
3221 &scb->sgl_dma_addr);
3222
3223 scb->sgl = (mega_sglist *)scb->sgl64;
3224
3225 if( !scb->sgl ) {
3226 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3227 mega_free_sgl(adapter);
3228 return -1;
3229 }
3230
3231 scb->pthru = pci_alloc_consistent(adapter->dev,
3232 sizeof(mega_passthru),
3233 &scb->pthru_dma_addr);
3234
3235 if( !scb->pthru ) {
3236 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3237 mega_free_sgl(adapter);
3238 return -1;
3239 }
3240
3241 scb->epthru = pci_alloc_consistent(adapter->dev,
3242 sizeof(mega_ext_passthru),
3243 &scb->epthru_dma_addr);
3244
3245 if( !scb->epthru ) {
3246 printk(KERN_WARNING
3247 "Can't allocate extended passthru.\n");
3248 mega_free_sgl(adapter);
3249 return -1;
3250 }
3251
3252
3253 scb->dma_type = MEGA_DMA_TYPE_NONE;
3254
3255 /*
3256 * Link to free list
3257 * lock not required since we are loading the driver, so no
3258 * commands possible right now.
3259 */
3260 scb->state = SCB_FREE;
3261 scb->cmd = NULL;
3262 list_add(&scb->list, &adapter->free_list);
3263 }
3264
3265 return 0;
3266 }
3267
3268
3269 /**
3270 * megadev_open()
3271 * @inode - unused
3272 * @filep - unused
3273 *
3274 * Routines for the character/ioctl interface to the driver. Find out if this
3275 * is a valid open. If yes, increment the module use count so that it cannot
3276 * be unloaded.
3277 */
3278 static int
3279 megadev_open (struct inode *inode, struct file *filep)
3280 {
3281 /*
3282 * Only allow superuser to access private ioctl interface
3283 */
3284 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3285
3286 return 0;
3287 }
3288
3289
3290 /**
3291 * megadev_ioctl()
3292 * @inode - Our device inode
3293 * @filep - unused
3294 * @cmd - ioctl command
3295 * @arg - user buffer
3296 *
3297 * ioctl entry point for our private ioctl interface. We move the data in from
3298 * the user space, prepare the command (if necessary, convert the old MIMD
3299 * ioctl to new ioctl command), and issue a synchronous command to the
3300 * controller.
3301 */
3302 static int
3303 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3304 unsigned long arg)
3305 {
3306 adapter_t *adapter;
3307 nitioctl_t uioc;
3308 int adapno;
3309 int rval;
3310 mega_passthru __user *upthru; /* user address for passthru */
3311 mega_passthru *pthru; /* copy user passthru here */
3312 dma_addr_t pthru_dma_hndl;
3313 void *data = NULL; /* data to be transferred */
3314 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3315 megacmd_t mc;
3316 megastat_t __user *ustats;
3317 int num_ldrv;
3318 u32 uxferaddr = 0;
3319 struct pci_dev *pdev;
3320
3321 ustats = NULL; /* avoid compilation warnings */
3322 num_ldrv = 0;
3323
3324 /*
3325 * Make sure only USCSICMD are issued through this interface.
3326 * MIMD application would still fire different command.
3327 */
3328 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3329 return -EINVAL;
3330 }
3331
3332 /*
3333 * Check and convert a possible MIMD command to NIT command.
3334 * mega_m_to_n() copies the data from the user space, so we do not
3335 * have to do it here.
3336 * NOTE: We will need some user address to copyout the data, therefore
3337 * the inteface layer will also provide us with the required user
3338 * addresses.
3339 */
3340 memset(&uioc, 0, sizeof(nitioctl_t));
3341 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3342 return rval;
3343
3344
3345 switch( uioc.opcode ) {
3346
3347 case GET_DRIVER_VER:
3348 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3349 return (-EFAULT);
3350
3351 break;
3352
3353 case GET_N_ADAP:
3354 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3355 return (-EFAULT);
3356
3357 /*
3358 * Shucks. MIMD interface returns a positive value for number
3359 * of adapters. TODO: Change it to return 0 when there is no
3360 * applicatio using mimd interface.
3361 */
3362 return hba_count;
3363
3364 case GET_ADAP_INFO:
3365
3366 /*
3367 * Which adapter
3368 */
3369 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3370 return (-ENODEV);
3371
3372 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3373 sizeof(struct mcontroller)) )
3374 return (-EFAULT);
3375 break;
3376
3377 #if MEGA_HAVE_STATS
3378
3379 case GET_STATS:
3380 /*
3381 * Which adapter
3382 */
3383 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3384 return (-ENODEV);
3385
3386 adapter = hba_soft_state[adapno];
3387
3388 ustats = uioc.uioc_uaddr;
3389
3390 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3391 return (-EFAULT);
3392
3393 /*
3394 * Check for the validity of the logical drive number
3395 */
3396 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3397
3398 if( copy_to_user(ustats->nreads, adapter->nreads,
3399 num_ldrv*sizeof(u32)) )
3400 return -EFAULT;
3401
3402 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3403 num_ldrv*sizeof(u32)) )
3404 return -EFAULT;
3405
3406 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3407 num_ldrv*sizeof(u32)) )
3408 return -EFAULT;
3409
3410 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3411 num_ldrv*sizeof(u32)) )
3412 return -EFAULT;
3413
3414 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3415 num_ldrv*sizeof(u32)) )
3416 return -EFAULT;
3417
3418 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3419 num_ldrv*sizeof(u32)) )
3420 return -EFAULT;
3421
3422 return 0;
3423
3424 #endif
3425 case MBOX_CMD:
3426
3427 /*
3428 * Which adapter
3429 */
3430 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3431 return (-ENODEV);
3432
3433 adapter = hba_soft_state[adapno];
3434
3435 /*
3436 * Deletion of logical drive is a special case. The adapter
3437 * should be quiescent before this command is issued.
3438 */
3439 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3440 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3441
3442 /*
3443 * Do we support this feature
3444 */
3445 if( !adapter->support_random_del ) {
3446 printk(KERN_WARNING "megaraid: logdrv ");
3447 printk("delete on non-supporting F/W.\n");
3448
3449 return (-EINVAL);
3450 }
3451
3452 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3453
3454 if( rval == 0 ) {
3455 memset(&mc, 0, sizeof(megacmd_t));
3456
3457 mc.status = rval;
3458
3459 rval = mega_n_to_m((void __user *)arg, &mc);
3460 }
3461
3462 return rval;
3463 }
3464 /*
3465 * This interface only support the regular passthru commands.
3466 * Reject extended passthru and 64-bit passthru
3467 */
3468 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3469 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3470
3471 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3472
3473 return (-EINVAL);
3474 }
3475
3476 /*
3477 * For all internal commands, the buffer must be allocated in
3478 * <4GB address range
3479 */
3480 if( make_local_pdev(adapter, &pdev) != 0 )
3481 return -EIO;
3482
3483 /* Is it a passthru command or a DCMD */
3484 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3485 /* Passthru commands */
3486
3487 pthru = pci_alloc_consistent(pdev,
3488 sizeof(mega_passthru),
3489 &pthru_dma_hndl);
3490
3491 if( pthru == NULL ) {
3492 free_local_pdev(pdev);
3493 return (-ENOMEM);
3494 }
3495
3496 /*
3497 * The user passthru structure
3498 */
3499 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3500
3501 /*
3502 * Copy in the user passthru here.
3503 */
3504 if( copy_from_user(pthru, upthru,
3505 sizeof(mega_passthru)) ) {
3506
3507 pci_free_consistent(pdev,
3508 sizeof(mega_passthru), pthru,
3509 pthru_dma_hndl);
3510
3511 free_local_pdev(pdev);
3512
3513 return (-EFAULT);
3514 }
3515
3516 /*
3517 * Is there a data transfer
3518 */
3519 if( pthru->dataxferlen ) {
3520 data = pci_alloc_consistent(pdev,
3521 pthru->dataxferlen,
3522 &data_dma_hndl);
3523
3524 if( data == NULL ) {
3525 pci_free_consistent(pdev,
3526 sizeof(mega_passthru),
3527 pthru,
3528 pthru_dma_hndl);
3529
3530 free_local_pdev(pdev);
3531
3532 return (-ENOMEM);
3533 }
3534
3535 /*
3536 * Save the user address and point the kernel
3537 * address at just allocated memory
3538 */
3539 uxferaddr = pthru->dataxferaddr;
3540 pthru->dataxferaddr = data_dma_hndl;
3541 }
3542
3543
3544 /*
3545 * Is data coming down-stream
3546 */
3547 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3548 /*
3549 * Get the user data
3550 */
3551 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3552 pthru->dataxferlen) ) {
3553 rval = (-EFAULT);
3554 goto freemem_and_return;
3555 }
3556 }
3557
3558 memset(&mc, 0, sizeof(megacmd_t));
3559
3560 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3561 mc.xferaddr = (u32)pthru_dma_hndl;
3562
3563 /*
3564 * Issue the command
3565 */
3566 mega_internal_command(adapter, &mc, pthru);
3567
3568 rval = mega_n_to_m((void __user *)arg, &mc);
3569
3570 if( rval ) goto freemem_and_return;
3571
3572
3573 /*
3574 * Is data going up-stream
3575 */
3576 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3577 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3578 pthru->dataxferlen) ) {
3579 rval = (-EFAULT);
3580 }
3581 }
3582
3583 /*
3584 * Send the request sense data also, irrespective of
3585 * whether the user has asked for it or not.
3586 */
3587 if (copy_to_user(upthru->reqsensearea,
3588 pthru->reqsensearea, 14))
3589 rval = -EFAULT;
3590
3591 freemem_and_return:
3592 if( pthru->dataxferlen ) {
3593 pci_free_consistent(pdev,
3594 pthru->dataxferlen, data,
3595 data_dma_hndl);
3596 }
3597
3598 pci_free_consistent(pdev, sizeof(mega_passthru),
3599 pthru, pthru_dma_hndl);
3600
3601 free_local_pdev(pdev);
3602
3603 return rval;
3604 }
3605 else {
3606 /* DCMD commands */
3607
3608 /*
3609 * Is there a data transfer
3610 */
3611 if( uioc.xferlen ) {
3612 data = pci_alloc_consistent(pdev,
3613 uioc.xferlen, &data_dma_hndl);
3614
3615 if( data == NULL ) {
3616 free_local_pdev(pdev);
3617 return (-ENOMEM);
3618 }
3619
3620 uxferaddr = MBOX(uioc)->xferaddr;
3621 }
3622
3623 /*
3624 * Is data coming down-stream
3625 */
3626 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3627 /*
3628 * Get the user data
3629 */
3630 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3631 uioc.xferlen) ) {
3632
3633 pci_free_consistent(pdev,
3634 uioc.xferlen,
3635 data, data_dma_hndl);
3636
3637 free_local_pdev(pdev);
3638
3639 return (-EFAULT);
3640 }
3641 }
3642
3643 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3644
3645 mc.xferaddr = (u32)data_dma_hndl;
3646
3647 /*
3648 * Issue the command
3649 */
3650 mega_internal_command(adapter, &mc, NULL);
3651
3652 rval = mega_n_to_m((void __user *)arg, &mc);
3653
3654 if( rval ) {
3655 if( uioc.xferlen ) {
3656 pci_free_consistent(pdev,
3657 uioc.xferlen, data,
3658 data_dma_hndl);
3659 }
3660
3661 free_local_pdev(pdev);
3662
3663 return rval;
3664 }
3665
3666 /*
3667 * Is data going up-stream
3668 */
3669 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3670 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3671 uioc.xferlen) ) {
3672
3673 rval = (-EFAULT);
3674 }
3675 }
3676
3677 if( uioc.xferlen ) {
3678 pci_free_consistent(pdev,
3679 uioc.xferlen, data,
3680 data_dma_hndl);
3681 }
3682
3683 free_local_pdev(pdev);
3684
3685 return rval;
3686 }
3687
3688 default:
3689 return (-EINVAL);
3690 }
3691
3692 return 0;
3693 }
3694
3695 /**
3696 * mega_m_to_n()
3697 * @arg - user address
3698 * @uioc - new ioctl structure
3699 *
3700 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3701 * structure
3702 *
3703 * Converts the older mimd ioctl structure to newer NIT structure
3704 */
3705 static int
3706 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3707 {
3708 struct uioctl_t uioc_mimd;
3709 char signature[8] = {0};
3710 u8 opcode;
3711 u8 subopcode;
3712
3713
3714 /*
3715 * check is the application conforms to NIT. We do not have to do much
3716 * in that case.
3717 * We exploit the fact that the signature is stored in the very
3718 * begining of the structure.
3719 */
3720
3721 if( copy_from_user(signature, arg, 7) )
3722 return (-EFAULT);
3723
3724 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3725
3726 /*
3727 * NOTE NOTE: The nit ioctl is still under flux because of
3728 * change of mailbox definition, in HPE. No applications yet
3729 * use this interface and let's not have applications use this
3730 * interface till the new specifitions are in place.
3731 */
3732 return -EINVAL;
3733 #if 0
3734 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3735 return (-EFAULT);
3736 return 0;
3737 #endif
3738 }
3739
3740 /*
3741 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3742 *
3743 * Get the user ioctl structure
3744 */
3745 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3746 return (-EFAULT);
3747
3748
3749 /*
3750 * Get the opcode and subopcode for the commands
3751 */
3752 opcode = uioc_mimd.ui.fcs.opcode;
3753 subopcode = uioc_mimd.ui.fcs.subopcode;
3754
3755 switch (opcode) {
3756 case 0x82:
3757
3758 switch (subopcode) {
3759
3760 case MEGAIOC_QDRVRVER: /* Query driver version */
3761 uioc->opcode = GET_DRIVER_VER;
3762 uioc->uioc_uaddr = uioc_mimd.data;
3763 break;
3764
3765 case MEGAIOC_QNADAP: /* Get # of adapters */
3766 uioc->opcode = GET_N_ADAP;
3767 uioc->uioc_uaddr = uioc_mimd.data;
3768 break;
3769
3770 case MEGAIOC_QADAPINFO: /* Get adapter information */
3771 uioc->opcode = GET_ADAP_INFO;
3772 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3773 uioc->uioc_uaddr = uioc_mimd.data;
3774 break;
3775
3776 default:
3777 return(-EINVAL);
3778 }
3779
3780 break;
3781
3782
3783 case 0x81:
3784
3785 uioc->opcode = MBOX_CMD;
3786 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3787
3788 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3789
3790 uioc->xferlen = uioc_mimd.ui.fcs.length;
3791
3792 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3793 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3794
3795 break;
3796
3797 case 0x80:
3798
3799 uioc->opcode = MBOX_CMD;
3800 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3801
3802 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3803
3804 /*
3805 * Choose the xferlen bigger of input and output data
3806 */
3807 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3808 uioc_mimd.outlen : uioc_mimd.inlen;
3809
3810 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3811 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3812
3813 break;
3814
3815 default:
3816 return (-EINVAL);
3817
3818 }
3819
3820 return 0;
3821 }
3822
3823 /*
3824 * mega_n_to_m()
3825 * @arg - user address
3826 * @mc - mailbox command
3827 *
3828 * Updates the status information to the application, depending on application
3829 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3830 */
3831 static int
3832 mega_n_to_m(void __user *arg, megacmd_t *mc)
3833 {
3834 nitioctl_t __user *uiocp;
3835 megacmd_t __user *umc;
3836 mega_passthru __user *upthru;
3837 struct uioctl_t __user *uioc_mimd;
3838 char signature[8] = {0};
3839
3840 /*
3841 * check is the application conforms to NIT.
3842 */
3843 if( copy_from_user(signature, arg, 7) )
3844 return -EFAULT;
3845
3846 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3847
3848 uiocp = arg;
3849
3850 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3851 return (-EFAULT);
3852
3853 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3854
3855 umc = MBOX_P(uiocp);
3856
3857 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3858 return -EFAULT;
3859
3860 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3861 return (-EFAULT);
3862 }
3863 }
3864 else {
3865 uioc_mimd = arg;
3866
3867 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3868 return (-EFAULT);
3869
3870 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3871
3872 umc = (megacmd_t __user *)uioc_mimd->mbox;
3873
3874 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3875 return (-EFAULT);
3876
3877 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3878 return (-EFAULT);
3879 }
3880 }
3881
3882 return 0;
3883 }
3884
3885
3886 /*
3887 * MEGARAID 'FW' commands.
3888 */
3889
3890 /**
3891 * mega_is_bios_enabled()
3892 * @adapter - pointer to our soft state
3893 *
3894 * issue command to find out if the BIOS is enabled for this controller
3895 */
3896 static int
3897 mega_is_bios_enabled(adapter_t *adapter)
3898 {
3899 unsigned char raw_mbox[sizeof(struct mbox_out)];
3900 mbox_t *mbox;
3901 int ret;
3902
3903 mbox = (mbox_t *)raw_mbox;
3904
3905 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3906
3907 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3908
3909 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3910
3911 raw_mbox[0] = IS_BIOS_ENABLED;
3912 raw_mbox[2] = GET_BIOS;
3913
3914
3915 ret = issue_scb_block(adapter, raw_mbox);
3916
3917 return *(char *)adapter->mega_buffer;
3918 }
3919
3920
3921 /**
3922 * mega_enum_raid_scsi()
3923 * @adapter - pointer to our soft state
3924 *
3925 * Find out what channels are RAID/SCSI. This information is used to
3926 * differentiate the virtual channels and physical channels and to support
3927 * ROMB feature and non-disk devices.
3928 */
3929 static void
3930 mega_enum_raid_scsi(adapter_t *adapter)
3931 {
3932 unsigned char raw_mbox[sizeof(struct mbox_out)];
3933 mbox_t *mbox;
3934 int i;
3935
3936 mbox = (mbox_t *)raw_mbox;
3937
3938 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3939
3940 /*
3941 * issue command to find out what channels are raid/scsi
3942 */
3943 raw_mbox[0] = CHNL_CLASS;
3944 raw_mbox[2] = GET_CHNL_CLASS;
3945
3946 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3947
3948 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3949
3950 /*
3951 * Non-ROMB firmware fail this command, so all channels
3952 * must be shown RAID
3953 */
3954 adapter->mega_ch_class = 0xFF;
3955
3956 if(!issue_scb_block(adapter, raw_mbox)) {
3957 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3958
3959 }
3960
3961 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3962 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3963 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3964 i);
3965 }
3966 else {
3967 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3968 i);
3969 }
3970 }
3971
3972 return;
3973 }
3974
3975
3976 /**
3977 * mega_get_boot_drv()
3978 * @adapter - pointer to our soft state
3979 *
3980 * Find out which device is the boot device. Note, any logical drive or any
3981 * phyical device (e.g., a CDROM) can be designated as a boot device.
3982 */
3983 static void
3984 mega_get_boot_drv(adapter_t *adapter)
3985 {
3986 struct private_bios_data *prv_bios_data;
3987 unsigned char raw_mbox[sizeof(struct mbox_out)];
3988 mbox_t *mbox;
3989 u16 cksum = 0;
3990 u8 *cksum_p;
3991 u8 boot_pdrv;
3992 int i;
3993
3994 mbox = (mbox_t *)raw_mbox;
3995
3996 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3997
3998 raw_mbox[0] = BIOS_PVT_DATA;
3999 raw_mbox[2] = GET_BIOS_PVT_DATA;
4000
4001 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4002
4003 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4004
4005 adapter->boot_ldrv_enabled = 0;
4006 adapter->boot_ldrv = 0;
4007
4008 adapter->boot_pdrv_enabled = 0;
4009 adapter->boot_pdrv_ch = 0;
4010 adapter->boot_pdrv_tgt = 0;
4011
4012 if(issue_scb_block(adapter, raw_mbox) == 0) {
4013 prv_bios_data =
4014 (struct private_bios_data *)adapter->mega_buffer;
4015
4016 cksum = 0;
4017 cksum_p = (char *)prv_bios_data;
4018 for (i = 0; i < 14; i++ ) {
4019 cksum += (u16)(*cksum_p++);
4020 }
4021
4022 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4023
4024 /*
4025 * If MSB is set, a physical drive is set as boot
4026 * device
4027 */
4028 if( prv_bios_data->boot_drv & 0x80 ) {
4029 adapter->boot_pdrv_enabled = 1;
4030 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4031 adapter->boot_pdrv_ch = boot_pdrv / 16;
4032 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4033 }
4034 else {
4035 adapter->boot_ldrv_enabled = 1;
4036 adapter->boot_ldrv = prv_bios_data->boot_drv;
4037 }
4038 }
4039 }
4040
4041 }
4042
4043 /**
4044 * mega_support_random_del()
4045 * @adapter - pointer to our soft state
4046 *
4047 * Find out if this controller supports random deletion and addition of
4048 * logical drives
4049 */
4050 static int
4051 mega_support_random_del(adapter_t *adapter)
4052 {
4053 unsigned char raw_mbox[sizeof(struct mbox_out)];
4054 mbox_t *mbox;
4055 int rval;
4056
4057 mbox = (mbox_t *)raw_mbox;
4058
4059 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4060
4061 /*
4062 * issue command
4063 */
4064 raw_mbox[0] = FC_DEL_LOGDRV;
4065 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4066
4067 rval = issue_scb_block(adapter, raw_mbox);
4068
4069 return !rval;
4070 }
4071
4072
4073 /**
4074 * mega_support_ext_cdb()
4075 * @adapter - pointer to our soft state
4076 *
4077 * Find out if this firmware support cdblen > 10
4078 */
4079 static int
4080 mega_support_ext_cdb(adapter_t *adapter)
4081 {
4082 unsigned char raw_mbox[sizeof(struct mbox_out)];
4083 mbox_t *mbox;
4084 int rval;
4085
4086 mbox = (mbox_t *)raw_mbox;
4087
4088 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4089 /*
4090 * issue command to find out if controller supports extended CDBs.
4091 */
4092 raw_mbox[0] = 0xA4;
4093 raw_mbox[2] = 0x16;
4094
4095 rval = issue_scb_block(adapter, raw_mbox);
4096
4097 return !rval;
4098 }
4099
4100
4101 /**
4102 * mega_del_logdrv()
4103 * @adapter - pointer to our soft state
4104 * @logdrv - logical drive to be deleted
4105 *
4106 * Delete the specified logical drive. It is the responsibility of the user
4107 * app to let the OS know about this operation.
4108 */
4109 static int
4110 mega_del_logdrv(adapter_t *adapter, int logdrv)
4111 {
4112 unsigned long flags;
4113 scb_t *scb;
4114 int rval;
4115
4116 /*
4117 * Stop sending commands to the controller, queue them internally.
4118 * When deletion is complete, ISR will flush the queue.
4119 */
4120 atomic_set(&adapter->quiescent, 1);
4121
4122 /*
4123 * Wait till all the issued commands are complete and there are no
4124 * commands in the pending queue
4125 */
4126 while (atomic_read(&adapter->pend_cmds) > 0 ||
4127 !list_empty(&adapter->pending_list))
4128 msleep(1000); /* sleep for 1s */
4129
4130 rval = mega_do_del_logdrv(adapter, logdrv);
4131
4132 spin_lock_irqsave(&adapter->lock, flags);
4133
4134 /*
4135 * If delete operation was successful, add 0x80 to the logical drive
4136 * ids for commands in the pending queue.
4137 */
4138 if (adapter->read_ldidmap) {
4139 struct list_head *pos;
4140 list_for_each(pos, &adapter->pending_list) {
4141 scb = list_entry(pos, scb_t, list);
4142 if (scb->pthru->logdrv < 0x80 )
4143 scb->pthru->logdrv += 0x80;
4144 }
4145 }
4146
4147 atomic_set(&adapter->quiescent, 0);
4148
4149 mega_runpendq(adapter);
4150
4151 spin_unlock_irqrestore(&adapter->lock, flags);
4152
4153 return rval;
4154 }
4155
4156
4157 static int
4158 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4159 {
4160 megacmd_t mc;
4161 int rval;
4162
4163 memset( &mc, 0, sizeof(megacmd_t));
4164
4165 mc.cmd = FC_DEL_LOGDRV;
4166 mc.opcode = OP_DEL_LOGDRV;
4167 mc.subopcode = logdrv;
4168
4169 rval = mega_internal_command(adapter, &mc, NULL);
4170
4171 /* log this event */
4172 if(rval) {
4173 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4174 return rval;
4175 }
4176
4177 /*
4178 * After deleting first logical drive, the logical drives must be
4179 * addressed by adding 0x80 to the logical drive id.
4180 */
4181 adapter->read_ldidmap = 1;
4182
4183 return rval;
4184 }
4185
4186
4187 /**
4188 * mega_get_max_sgl()
4189 * @adapter - pointer to our soft state
4190 *
4191 * Find out the maximum number of scatter-gather elements supported by this
4192 * version of the firmware
4193 */
4194 static void
4195 mega_get_max_sgl(adapter_t *adapter)
4196 {
4197 unsigned char raw_mbox[sizeof(struct mbox_out)];
4198 mbox_t *mbox;
4199
4200 mbox = (mbox_t *)raw_mbox;
4201
4202 memset(mbox, 0, sizeof(raw_mbox));
4203
4204 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4205
4206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4207
4208 raw_mbox[0] = MAIN_MISC_OPCODE;
4209 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4210
4211
4212 if( issue_scb_block(adapter, raw_mbox) ) {
4213 /*
4214 * f/w does not support this command. Choose the default value
4215 */
4216 adapter->sglen = MIN_SGLIST;
4217 }
4218 else {
4219 adapter->sglen = *((char *)adapter->mega_buffer);
4220
4221 /*
4222 * Make sure this is not more than the resources we are
4223 * planning to allocate
4224 */
4225 if ( adapter->sglen > MAX_SGLIST )
4226 adapter->sglen = MAX_SGLIST;
4227 }
4228
4229 return;
4230 }
4231
4232
4233 /**
4234 * mega_support_cluster()
4235 * @adapter - pointer to our soft state
4236 *
4237 * Find out if this firmware support cluster calls.
4238 */
4239 static int
4240 mega_support_cluster(adapter_t *adapter)
4241 {
4242 unsigned char raw_mbox[sizeof(struct mbox_out)];
4243 mbox_t *mbox;
4244
4245 mbox = (mbox_t *)raw_mbox;
4246
4247 memset(mbox, 0, sizeof(raw_mbox));
4248
4249 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4250
4251 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4252
4253 /*
4254 * Try to get the initiator id. This command will succeed iff the
4255 * clustering is available on this HBA.
4256 */
4257 raw_mbox[0] = MEGA_GET_TARGET_ID;
4258
4259 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4260
4261 /*
4262 * Cluster support available. Get the initiator target id.
4263 * Tell our id to mid-layer too.
4264 */
4265 adapter->this_id = *(u32 *)adapter->mega_buffer;
4266 adapter->host->this_id = adapter->this_id;
4267
4268 return 1;
4269 }
4270
4271 return 0;
4272 }
4273
4274 #ifdef CONFIG_PROC_FS
4275 /**
4276 * mega_adapinq()
4277 * @adapter - pointer to our soft state
4278 * @dma_handle - DMA address of the buffer
4279 *
4280 * Issue internal comamnds while interrupts are available.
4281 * We only issue direct mailbox commands from within the driver. ioctl()
4282 * interface using these routines can issue passthru commands.
4283 */
4284 static int
4285 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4286 {
4287 megacmd_t mc;
4288
4289 memset(&mc, 0, sizeof(megacmd_t));
4290
4291 if( adapter->flag & BOARD_40LD ) {
4292 mc.cmd = FC_NEW_CONFIG;
4293 mc.opcode = NC_SUBOP_ENQUIRY3;
4294 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4295 }
4296 else {
4297 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4298 }
4299
4300 mc.xferaddr = (u32)dma_handle;
4301
4302 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4303 return -1;
4304 }
4305
4306 return 0;
4307 }
4308
4309
4310 /** mega_internal_dev_inquiry()
4311 * @adapter - pointer to our soft state
4312 * @ch - channel for this device
4313 * @tgt - ID of this device
4314 * @buf_dma_handle - DMA address of the buffer
4315 *
4316 * Issue the scsi inquiry for the specified device.
4317 */
4318 static int
4319 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4320 dma_addr_t buf_dma_handle)
4321 {
4322 mega_passthru *pthru;
4323 dma_addr_t pthru_dma_handle;
4324 megacmd_t mc;
4325 int rval;
4326 struct pci_dev *pdev;
4327
4328
4329 /*
4330 * For all internal commands, the buffer must be allocated in <4GB
4331 * address range
4332 */
4333 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4334
4335 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4336 &pthru_dma_handle);
4337
4338 if( pthru == NULL ) {
4339 free_local_pdev(pdev);
4340 return -1;
4341 }
4342
4343 pthru->timeout = 2;
4344 pthru->ars = 1;
4345 pthru->reqsenselen = 14;
4346 pthru->islogical = 0;
4347
4348 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4349
4350 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4351
4352 pthru->cdblen = 6;
4353
4354 pthru->cdb[0] = INQUIRY;
4355 pthru->cdb[1] = 0;
4356 pthru->cdb[2] = 0;
4357 pthru->cdb[3] = 0;
4358 pthru->cdb[4] = 255;
4359 pthru->cdb[5] = 0;
4360
4361
4362 pthru->dataxferaddr = (u32)buf_dma_handle;
4363 pthru->dataxferlen = 256;
4364
4365 memset(&mc, 0, sizeof(megacmd_t));
4366
4367 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4368 mc.xferaddr = (u32)pthru_dma_handle;
4369
4370 rval = mega_internal_command(adapter, &mc, pthru);
4371
4372 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4373 pthru_dma_handle);
4374
4375 free_local_pdev(pdev);
4376
4377 return rval;
4378 }
4379 #endif
4380
4381 /**
4382 * mega_internal_command()
4383 * @adapter - pointer to our soft state
4384 * @mc - the mailbox command
4385 * @pthru - Passthru structure for DCDB commands
4386 *
4387 * Issue the internal commands in interrupt mode.
4388 * The last argument is the address of the passthru structure if the command
4389 * to be fired is a passthru command
4390 *
4391 * lockscope specifies whether the caller has already acquired the lock. Of
4392 * course, the caller must know which lock we are talking about.
4393 *
4394 * Note: parameter 'pthru' is null for non-passthru commands.
4395 */
4396 static int
4397 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4398 {
4399 Scsi_Cmnd *scmd;
4400 struct scsi_device *sdev;
4401 scb_t *scb;
4402 int rval;
4403
4404 /*
4405 * The internal commands share one command id and hence are
4406 * serialized. This is so because we want to reserve maximum number of
4407 * available command ids for the I/O commands.
4408 */
4409 mutex_lock(&adapter->int_mtx);
4410
4411 scb = &adapter->int_scb;
4412 memset(scb, 0, sizeof(scb_t));
4413
4414 scmd = &adapter->int_scmd;
4415 memset(scmd, 0, sizeof(Scsi_Cmnd));
4416
4417 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
4418 scmd->device = sdev;
4419
4420 scmd->device->host = adapter->host;
4421 scmd->host_scribble = (void *)scb;
4422 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4423
4424 scb->state |= SCB_ACTIVE;
4425 scb->cmd = scmd;
4426
4427 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4428
4429 /*
4430 * Is it a passthru command
4431 */
4432 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4433
4434 scb->pthru = pthru;
4435 }
4436
4437 scb->idx = CMDID_INT_CMDS;
4438
4439 megaraid_queue(scmd, mega_internal_done);
4440
4441 wait_for_completion(&adapter->int_waitq);
4442
4443 rval = scmd->result;
4444 mc->status = scmd->result;
4445 kfree(sdev);
4446
4447 /*
4448 * Print a debug message for all failed commands. Applications can use
4449 * this information.
4450 */
4451 if( scmd->result && trace_level ) {
4452 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4453 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4454 }
4455
4456 mutex_unlock(&adapter->int_mtx);
4457
4458 return rval;
4459 }
4460
4461
4462 /**
4463 * mega_internal_done()
4464 * @scmd - internal scsi command
4465 *
4466 * Callback routine for internal commands.
4467 */
4468 static void
4469 mega_internal_done(Scsi_Cmnd *scmd)
4470 {
4471 adapter_t *adapter;
4472
4473 adapter = (adapter_t *)scmd->device->host->hostdata;
4474
4475 complete(&adapter->int_waitq);
4476
4477 }
4478
4479
4480 static struct scsi_host_template megaraid_template = {
4481 .module = THIS_MODULE,
4482 .name = "MegaRAID",
4483 .proc_name = "megaraid_legacy",
4484 .info = megaraid_info,
4485 .queuecommand = megaraid_queue,
4486 .bios_param = megaraid_biosparam,
4487 .max_sectors = MAX_SECTORS_PER_IO,
4488 .can_queue = MAX_COMMANDS,
4489 .this_id = DEFAULT_INITIATOR_ID,
4490 .sg_tablesize = MAX_SGLIST,
4491 .cmd_per_lun = DEF_CMD_PER_LUN,
4492 .use_clustering = ENABLE_CLUSTERING,
4493 .eh_abort_handler = megaraid_abort,
4494 .eh_device_reset_handler = megaraid_reset,
4495 .eh_bus_reset_handler = megaraid_reset,
4496 .eh_host_reset_handler = megaraid_reset,
4497 };
4498
4499 static int __devinit
4500 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4501 {
4502 struct Scsi_Host *host;
4503 adapter_t *adapter;
4504 unsigned long mega_baseport, tbase, flag = 0;
4505 u16 subsysid, subsysvid;
4506 u8 pci_bus, pci_dev_func;
4507 int irq, i, j;
4508 int error = -ENODEV;
4509
4510 if (pci_enable_device(pdev))
4511 goto out;
4512 pci_set_master(pdev);
4513
4514 pci_bus = pdev->bus->number;
4515 pci_dev_func = pdev->devfn;
4516
4517 /*
4518 * The megaraid3 stuff reports the ID of the Intel part which is not
4519 * remotely specific to the megaraid
4520 */
4521 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4522 u16 magic;
4523 /*
4524 * Don't fall over the Compaq management cards using the same
4525 * PCI identifier
4526 */
4527 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4528 pdev->subsystem_device == 0xC000)
4529 return -ENODEV;
4530 /* Now check the magic signature byte */
4531 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4532 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4533 return -ENODEV;
4534 /* Ok it is probably a megaraid */
4535 }
4536
4537 /*
4538 * For these vendor and device ids, signature offsets are not
4539 * valid and 64 bit is implicit
4540 */
4541 if (id->driver_data & BOARD_64BIT)
4542 flag |= BOARD_64BIT;
4543 else {
4544 u32 magic64;
4545
4546 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4547 if (magic64 == HBA_SIGNATURE_64BIT)
4548 flag |= BOARD_64BIT;
4549 }
4550
4551 subsysvid = pdev->subsystem_vendor;
4552 subsysid = pdev->subsystem_device;
4553
4554 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4555 id->vendor, id->device, pci_bus);
4556
4557 printk("slot %d:func %d\n",
4558 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4559
4560 /* Read the base port and IRQ from PCI */
4561 mega_baseport = pci_resource_start(pdev, 0);
4562 irq = pdev->irq;
4563
4564 tbase = mega_baseport;
4565 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4566 flag |= BOARD_MEMMAP;
4567
4568 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4569 printk(KERN_WARNING "megaraid: mem region busy!\n");
4570 goto out_disable_device;
4571 }
4572
4573 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4574 if (!mega_baseport) {
4575 printk(KERN_WARNING
4576 "megaraid: could not map hba memory\n");
4577 goto out_release_region;
4578 }
4579 } else {
4580 flag |= BOARD_IOMAP;
4581 mega_baseport += 0x10;
4582
4583 if (!request_region(mega_baseport, 16, "megaraid"))
4584 goto out_disable_device;
4585 }
4586
4587 /* Initialize SCSI Host structure */
4588 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4589 if (!host)
4590 goto out_iounmap;
4591
4592 adapter = (adapter_t *)host->hostdata;
4593 memset(adapter, 0, sizeof(adapter_t));
4594
4595 printk(KERN_NOTICE
4596 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4597 host->host_no, mega_baseport, irq);
4598
4599 adapter->base = mega_baseport;
4600 if (flag & BOARD_MEMMAP)
4601 adapter->mmio_base = (void __iomem *) mega_baseport;
4602
4603 INIT_LIST_HEAD(&adapter->free_list);
4604 INIT_LIST_HEAD(&adapter->pending_list);
4605 INIT_LIST_HEAD(&adapter->completed_list);
4606
4607 adapter->flag = flag;
4608 spin_lock_init(&adapter->lock);
4609
4610 host->cmd_per_lun = max_cmd_per_lun;
4611 host->max_sectors = max_sectors_per_io;
4612
4613 adapter->dev = pdev;
4614 adapter->host = host;
4615
4616 adapter->host->irq = irq;
4617
4618 if (flag & BOARD_MEMMAP)
4619 adapter->host->base = tbase;
4620 else {
4621 adapter->host->io_port = tbase;
4622 adapter->host->n_io_port = 16;
4623 }
4624
4625 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4626
4627 /*
4628 * Allocate buffer to issue internal commands.
4629 */
4630 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4631 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4632 if (!adapter->mega_buffer) {
4633 printk(KERN_WARNING "megaraid: out of RAM.\n");
4634 goto out_host_put;
4635 }
4636
4637 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4638 if (!adapter->scb_list) {
4639 printk(KERN_WARNING "megaraid: out of RAM.\n");
4640 goto out_free_cmd_buffer;
4641 }
4642
4643 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4644 megaraid_isr_memmapped : megaraid_isr_iomapped,
4645 IRQF_SHARED, "megaraid", adapter)) {
4646 printk(KERN_WARNING
4647 "megaraid: Couldn't register IRQ %d!\n", irq);
4648 goto out_free_scb_list;
4649 }
4650
4651 if (mega_setup_mailbox(adapter))
4652 goto out_free_irq;
4653
4654 if (mega_query_adapter(adapter))
4655 goto out_free_mbox;
4656
4657 /*
4658 * Have checks for some buggy f/w
4659 */
4660 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4661 /*
4662 * Which firmware
4663 */
4664 if (!strcmp(adapter->fw_version, "3.00") ||
4665 !strcmp(adapter->fw_version, "3.01")) {
4666
4667 printk( KERN_WARNING
4668 "megaraid: Your card is a Dell PERC "
4669 "2/SC RAID controller with "
4670 "firmware\nmegaraid: 3.00 or 3.01. "
4671 "This driver is known to have "
4672 "corruption issues\nmegaraid: with "
4673 "those firmware versions on this "
4674 "specific card. In order\nmegaraid: "
4675 "to protect your data, please upgrade "
4676 "your firmware to version\nmegaraid: "
4677 "3.10 or later, available from the "
4678 "Dell Technical Support web\n"
4679 "megaraid: site at\nhttp://support."
4680 "dell.com/us/en/filelib/download/"
4681 "index.asp?fileid=2940\n"
4682 );
4683 }
4684 }
4685
4686 /*
4687 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4688 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4689 * support, since this firmware cannot handle 64 bit
4690 * addressing
4691 */
4692 if ((subsysvid == HP_SUBSYS_VID) &&
4693 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4694 /*
4695 * which firmware
4696 */
4697 if (!strcmp(adapter->fw_version, "H01.07") ||
4698 !strcmp(adapter->fw_version, "H01.08") ||
4699 !strcmp(adapter->fw_version, "H01.09") ) {
4700 printk(KERN_WARNING
4701 "megaraid: Firmware H.01.07, "
4702 "H.01.08, and H.01.09 on 1M/2M "
4703 "controllers\n"
4704 "megaraid: do not support 64 bit "
4705 "addressing.\nmegaraid: DISABLING "
4706 "64 bit support.\n");
4707 adapter->flag &= ~BOARD_64BIT;
4708 }
4709 }
4710
4711 if (mega_is_bios_enabled(adapter))
4712 mega_hbas[hba_count].is_bios_enabled = 1;
4713 mega_hbas[hba_count].hostdata_addr = adapter;
4714
4715 /*
4716 * Find out which channel is raid and which is scsi. This is
4717 * for ROMB support.
4718 */
4719 mega_enum_raid_scsi(adapter);
4720
4721 /*
4722 * Find out if a logical drive is set as the boot drive. If
4723 * there is one, will make that as the first logical drive.
4724 * ROMB: Do we have to boot from a physical drive. Then all
4725 * the physical drives would appear before the logical disks.
4726 * Else, all the physical drives would be exported to the mid
4727 * layer after logical drives.
4728 */
4729 mega_get_boot_drv(adapter);
4730
4731 if (adapter->boot_pdrv_enabled) {
4732 j = adapter->product_info.nchannels;
4733 for( i = 0; i < j; i++ )
4734 adapter->logdrv_chan[i] = 0;
4735 for( i = j; i < NVIRT_CHAN + j; i++ )
4736 adapter->logdrv_chan[i] = 1;
4737 } else {
4738 for (i = 0; i < NVIRT_CHAN; i++)
4739 adapter->logdrv_chan[i] = 1;
4740 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4741 adapter->logdrv_chan[i] = 0;
4742 adapter->mega_ch_class <<= NVIRT_CHAN;
4743 }
4744
4745 /*
4746 * Do we support random deletion and addition of logical
4747 * drives
4748 */
4749 adapter->read_ldidmap = 0; /* set it after first logdrv
4750 delete cmd */
4751 adapter->support_random_del = mega_support_random_del(adapter);
4752
4753 /* Initialize SCBs */
4754 if (mega_init_scb(adapter))
4755 goto out_free_mbox;
4756
4757 /*
4758 * Reset the pending commands counter
4759 */
4760 atomic_set(&adapter->pend_cmds, 0);
4761
4762 /*
4763 * Reset the adapter quiescent flag
4764 */
4765 atomic_set(&adapter->quiescent, 0);
4766
4767 hba_soft_state[hba_count] = adapter;
4768
4769 /*
4770 * Fill in the structure which needs to be passed back to the
4771 * application when it does an ioctl() for controller related
4772 * information.
4773 */
4774 i = hba_count;
4775
4776 mcontroller[i].base = mega_baseport;
4777 mcontroller[i].irq = irq;
4778 mcontroller[i].numldrv = adapter->numldrv;
4779 mcontroller[i].pcibus = pci_bus;
4780 mcontroller[i].pcidev = id->device;
4781 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4782 mcontroller[i].pciid = -1;
4783 mcontroller[i].pcivendor = id->vendor;
4784 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4785 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4786
4787
4788 /* Set the Mode of addressing to 64 bit if we can */
4789 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4790 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4791 adapter->has_64bit_addr = 1;
4792 } else {
4793 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4794 adapter->has_64bit_addr = 0;
4795 }
4796
4797 mutex_init(&adapter->int_mtx);
4798 init_completion(&adapter->int_waitq);
4799
4800 adapter->this_id = DEFAULT_INITIATOR_ID;
4801 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4802
4803 #if MEGA_HAVE_CLUSTERING
4804 /*
4805 * Is cluster support enabled on this controller
4806 * Note: In a cluster the HBAs ( the initiators ) will have
4807 * different target IDs and we cannot assume it to be 7. Call
4808 * to mega_support_cluster() will get the target ids also if
4809 * the cluster support is available
4810 */
4811 adapter->has_cluster = mega_support_cluster(adapter);
4812 if (adapter->has_cluster) {
4813 printk(KERN_NOTICE
4814 "megaraid: Cluster driver, initiator id:%d\n",
4815 adapter->this_id);
4816 }
4817 #endif
4818
4819 pci_set_drvdata(pdev, host);
4820
4821 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4822
4823 error = scsi_add_host(host, &pdev->dev);
4824 if (error)
4825 goto out_free_mbox;
4826
4827 scsi_scan_host(host);
4828 hba_count++;
4829 return 0;
4830
4831 out_free_mbox:
4832 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4833 adapter->una_mbox64, adapter->una_mbox64_dma);
4834 out_free_irq:
4835 free_irq(adapter->host->irq, adapter);
4836 out_free_scb_list:
4837 kfree(adapter->scb_list);
4838 out_free_cmd_buffer:
4839 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4840 adapter->mega_buffer, adapter->buf_dma_handle);
4841 out_host_put:
4842 scsi_host_put(host);
4843 out_iounmap:
4844 if (flag & BOARD_MEMMAP)
4845 iounmap((void *)mega_baseport);
4846 out_release_region:
4847 if (flag & BOARD_MEMMAP)
4848 release_mem_region(tbase, 128);
4849 else
4850 release_region(mega_baseport, 16);
4851 out_disable_device:
4852 pci_disable_device(pdev);
4853 out:
4854 return error;
4855 }
4856
4857 static void
4858 __megaraid_shutdown(adapter_t *adapter)
4859 {
4860 u_char raw_mbox[sizeof(struct mbox_out)];
4861 mbox_t *mbox = (mbox_t *)raw_mbox;
4862 int i;
4863
4864 /* Flush adapter cache */
4865 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4866 raw_mbox[0] = FLUSH_ADAPTER;
4867
4868 free_irq(adapter->host->irq, adapter);
4869
4870 /* Issue a blocking (interrupts disabled) command to the card */
4871 issue_scb_block(adapter, raw_mbox);
4872
4873 /* Flush disks cache */
4874 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4875 raw_mbox[0] = FLUSH_SYSTEM;
4876
4877 /* Issue a blocking (interrupts disabled) command to the card */
4878 issue_scb_block(adapter, raw_mbox);
4879
4880 if (atomic_read(&adapter->pend_cmds) > 0)
4881 printk(KERN_WARNING "megaraid: pending commands!!\n");
4882
4883 /*
4884 * Have a delibrate delay to make sure all the caches are
4885 * actually flushed.
4886 */
4887 for (i = 0; i <= 10; i++)
4888 mdelay(1000);
4889 }
4890
4891 static void __devexit
4892 megaraid_remove_one(struct pci_dev *pdev)
4893 {
4894 struct Scsi_Host *host = pci_get_drvdata(pdev);
4895 adapter_t *adapter = (adapter_t *)host->hostdata;
4896
4897 scsi_remove_host(host);
4898
4899 __megaraid_shutdown(adapter);
4900
4901 /* Free our resources */
4902 if (adapter->flag & BOARD_MEMMAP) {
4903 iounmap((void *)adapter->base);
4904 release_mem_region(adapter->host->base, 128);
4905 } else
4906 release_region(adapter->base, 16);
4907
4908 mega_free_sgl(adapter);
4909
4910 #ifdef CONFIG_PROC_FS
4911 if (adapter->controller_proc_dir_entry) {
4912 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4913 remove_proc_entry("config",
4914 adapter->controller_proc_dir_entry);
4915 remove_proc_entry("mailbox",
4916 adapter->controller_proc_dir_entry);
4917 #if MEGA_HAVE_ENH_PROC
4918 remove_proc_entry("rebuild-rate",
4919 adapter->controller_proc_dir_entry);
4920 remove_proc_entry("battery-status",
4921 adapter->controller_proc_dir_entry);
4922
4923 remove_proc_entry("diskdrives-ch0",
4924 adapter->controller_proc_dir_entry);
4925 remove_proc_entry("diskdrives-ch1",
4926 adapter->controller_proc_dir_entry);
4927 remove_proc_entry("diskdrives-ch2",
4928 adapter->controller_proc_dir_entry);
4929 remove_proc_entry("diskdrives-ch3",
4930 adapter->controller_proc_dir_entry);
4931
4932 remove_proc_entry("raiddrives-0-9",
4933 adapter->controller_proc_dir_entry);
4934 remove_proc_entry("raiddrives-10-19",
4935 adapter->controller_proc_dir_entry);
4936 remove_proc_entry("raiddrives-20-29",
4937 adapter->controller_proc_dir_entry);
4938 remove_proc_entry("raiddrives-30-39",
4939 adapter->controller_proc_dir_entry);
4940 #endif
4941 {
4942 char buf[12] = { 0 };
4943 sprintf(buf, "hba%d", adapter->host->host_no);
4944 remove_proc_entry(buf, mega_proc_dir_entry);
4945 }
4946 }
4947 #endif
4948
4949 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4950 adapter->mega_buffer, adapter->buf_dma_handle);
4951 kfree(adapter->scb_list);
4952 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4953 adapter->una_mbox64, adapter->una_mbox64_dma);
4954
4955 scsi_host_put(host);
4956 pci_disable_device(pdev);
4957
4958 hba_count--;
4959 }
4960
4961 static void
4962 megaraid_shutdown(struct pci_dev *pdev)
4963 {
4964 struct Scsi_Host *host = pci_get_drvdata(pdev);
4965 adapter_t *adapter = (adapter_t *)host->hostdata;
4966
4967 __megaraid_shutdown(adapter);
4968 }
4969
4970 static struct pci_device_id megaraid_pci_tbl[] = {
4971 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4972 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4973 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4974 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4975 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4976 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4977 {0,}
4978 };
4979 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4980
4981 static struct pci_driver megaraid_pci_driver = {
4982 .name = "megaraid_legacy",
4983 .id_table = megaraid_pci_tbl,
4984 .probe = megaraid_probe_one,
4985 .remove = __devexit_p(megaraid_remove_one),
4986 .shutdown = megaraid_shutdown,
4987 };
4988
4989 static int __init megaraid_init(void)
4990 {
4991 int error;
4992
4993 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4994 max_cmd_per_lun = MAX_CMD_PER_LUN;
4995 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4996 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4997
4998 #ifdef CONFIG_PROC_FS
4999 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
5000 if (!mega_proc_dir_entry) {
5001 printk(KERN_WARNING
5002 "megaraid: failed to create megaraid root\n");
5003 }
5004 #endif
5005 error = pci_register_driver(&megaraid_pci_driver);
5006 if (error) {
5007 #ifdef CONFIG_PROC_FS
5008 remove_proc_entry("megaraid", NULL);
5009 #endif
5010 return error;
5011 }
5012
5013 /*
5014 * Register the driver as a character device, for applications
5015 * to access it for ioctls.
5016 * First argument (major) to register_chrdev implies a dynamic
5017 * major number allocation.
5018 */
5019 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5020 if (!major) {
5021 printk(KERN_WARNING
5022 "megaraid: failed to register char device\n");
5023 }
5024
5025 return 0;
5026 }
5027
5028 static void __exit megaraid_exit(void)
5029 {
5030 /*
5031 * Unregister the character device interface to the driver.
5032 */
5033 unregister_chrdev(major, "megadev_legacy");
5034
5035 pci_unregister_driver(&megaraid_pci_driver);
5036
5037 #ifdef CONFIG_PROC_FS
5038 remove_proc_entry("megaraid", NULL);
5039 #endif
5040 }
5041
5042 module_init(megaraid_init);
5043 module_exit(megaraid_exit);
5044
5045 /* vi: set ts=8 sw=8 tw=78: */
Support for the Chinese Samsung S3C2440 based development boards