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[PATCH] IPV6: Do no rely on skb->dst before it is assigned.
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / megaraid.c
blob0aa3304f6b9be310982fe2e8ba80c1c841c9c8a4
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34 #include <linux/mm.h>
35 #include <linux/fs.h>
36 #include <linux/blkdev.h>
37 #include <asm/uaccess.h>
38 #include <asm/io.h>
39 #include <linux/completion.h>
40 #include <linux/delay.h>
41 #include <linux/proc_fs.h>
42 #include <linux/reboot.h>
43 #include <linux/module.h>
44 #include <linux/list.h>
45 #include <linux/interrupt.h>
46 #include <linux/pci.h>
47 #include <linux/init.h>
48 #include <linux/dma-mapping.h>
49 #include <scsi/scsicam.h>
50
51 #include "scsi.h"
52 #include <scsi/scsi_host.h>
53
54 #include "megaraid.h"
55
56 #define MEGARAID_MODULE_VERSION "2.00.4"
57
58 MODULE_AUTHOR ("sju@lsil.com");
59 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
60 MODULE_LICENSE ("GPL");
61 MODULE_VERSION(MEGARAID_MODULE_VERSION);
62
63 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
64 module_param(max_cmd_per_lun, uint, 0);
65 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
66
67 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
68 module_param(max_sectors_per_io, ushort, 0);
69 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70
71
72 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
73 module_param(max_mbox_busy_wait, ushort, 0);
74 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
75
76 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
77 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
78 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
79 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
80
81 /*
82 * Global variables
83 */
84
85 static int hba_count;
86 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
87 static struct proc_dir_entry *mega_proc_dir_entry;
88
89 /* For controller re-ordering */
90 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92 /*
93 * The File Operations structure for the serial/ioctl interface of the driver
94 */
95 static const struct file_operations megadev_fops = {
96 .owner = THIS_MODULE,
97 .ioctl = megadev_ioctl,
98 .open = megadev_open,
99 };
100
101 /*
102 * Array to structures for storing the information about the controllers. This
103 * information is sent to the user level applications, when they do an ioctl
104 * for this information.
105 */
106 static struct mcontroller mcontroller[MAX_CONTROLLERS];
107
108 /* The current driver version */
109 static u32 driver_ver = 0x02000000;
110
111 /* major number used by the device for character interface */
112 static int major;
113
114 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115
116
117 /*
118 * Debug variable to print some diagnostic messages
119 */
120 static int trace_level;
121
122 /**
123 * mega_setup_mailbox()
124 * @adapter - pointer to our soft state
125 *
126 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 */
128 static int
129 mega_setup_mailbox(adapter_t *adapter)
130 {
131 unsigned long align;
132
133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
134 sizeof(mbox64_t), &adapter->una_mbox64_dma);
135
136 if( !adapter->una_mbox64 ) return -1;
137
138 adapter->mbox = &adapter->una_mbox64->mbox;
139
140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
141 (~0UL ^ 0xFUL));
142
143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
144
145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
146
147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
148
149 /*
150 * Register the mailbox if the controller is an io-mapped controller
151 */
152 if( adapter->flag & BOARD_IOMAP ) {
153
154 outb_p(adapter->mbox_dma & 0xFF,
155 adapter->host->io_port + MBOX_PORT0);
156
157 outb_p((adapter->mbox_dma >> 8) & 0xFF,
158 adapter->host->io_port + MBOX_PORT1);
159
160 outb_p((adapter->mbox_dma >> 16) & 0xFF,
161 adapter->host->io_port + MBOX_PORT2);
162
163 outb_p((adapter->mbox_dma >> 24) & 0xFF,
164 adapter->host->io_port + MBOX_PORT3);
165
166 outb_p(ENABLE_MBOX_BYTE,
167 adapter->host->io_port + ENABLE_MBOX_REGION);
168
169 irq_ack(adapter);
170
171 irq_enable(adapter);
172 }
173
174 return 0;
175 }
176
177
178 /*
179 * mega_query_adapter()
180 * @adapter - pointer to our soft state
181 *
182 * Issue the adapter inquiry commands to the controller and find out
183 * information and parameter about the devices attached
184 */
185 static int
186 mega_query_adapter(adapter_t *adapter)
187 {
188 dma_addr_t prod_info_dma_handle;
189 mega_inquiry3 *inquiry3;
190 u8 raw_mbox[sizeof(struct mbox_out)];
191 mbox_t *mbox;
192 int retval;
193
194 /* Initialize adapter inquiry mailbox */
195
196 mbox = (mbox_t *)raw_mbox;
197
198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
199 memset(&mbox->m_out, 0, sizeof(raw_mbox));
200
201 /*
202 * Try to issue Inquiry3 command
203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
204 * update enquiry3 structure
205 */
206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
207
208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
209
210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
213
214 /* Issue a blocking command to the card */
215 if ((retval = issue_scb_block(adapter, raw_mbox))) {
216 /* the adapter does not support 40ld */
217
218 mraid_ext_inquiry *ext_inq;
219 mraid_inquiry *inq;
220 dma_addr_t dma_handle;
221
222 ext_inq = pci_alloc_consistent(adapter->dev,
223 sizeof(mraid_ext_inquiry), &dma_handle);
224
225 if( ext_inq == NULL ) return -1;
226
227 inq = &ext_inq->raid_inq;
228
229 mbox->m_out.xferaddr = (u32)dma_handle;
230
231 /*issue old 0x04 command to adapter */
232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
233
234 issue_scb_block(adapter, raw_mbox);
235
236 /*
237 * update Enquiry3 and ProductInfo structures with
238 * mraid_inquiry structure
239 */
240 mega_8_to_40ld(inq, inquiry3,
241 (mega_product_info *)&adapter->product_info);
242
243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
244 ext_inq, dma_handle);
245
246 } else { /*adapter supports 40ld */
247 adapter->flag |= BOARD_40LD;
248
249 /*
250 * get product_info, which is static information and will be
251 * unchanged
252 */
253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
254 &adapter->product_info,
255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
256
257 mbox->m_out.xferaddr = prod_info_dma_handle;
258
259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
261
262 if ((retval = issue_scb_block(adapter, raw_mbox)))
263 printk(KERN_WARNING
264 "megaraid: Product_info cmd failed with error: %d\n",
265 retval);
266
267 pci_unmap_single(adapter->dev, prod_info_dma_handle,
268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
269 }
270
271
272 /*
273 * kernel scans the channels from 0 to <= max_channel
274 */
275 adapter->host->max_channel =
276 adapter->product_info.nchannels + NVIRT_CHAN -1;
277
278 adapter->host->max_id = 16; /* max targets per channel */
279
280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
281
282 adapter->host->cmd_per_lun = max_cmd_per_lun;
283
284 adapter->numldrv = inquiry3->num_ldrv;
285
286 adapter->max_cmds = adapter->product_info.max_commands;
287
288 if(adapter->max_cmds > MAX_COMMANDS)
289 adapter->max_cmds = MAX_COMMANDS;
290
291 adapter->host->can_queue = adapter->max_cmds - 1;
292
293 /*
294 * Get the maximum number of scatter-gather elements supported by this
295 * firmware
296 */
297 mega_get_max_sgl(adapter);
298
299 adapter->host->sg_tablesize = adapter->sglen;
300
301
302 /* use HP firmware and bios version encoding */
303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
304 sprintf (adapter->fw_version, "%c%d%d.%d%d",
305 adapter->product_info.fw_version[2],
306 adapter->product_info.fw_version[1] >> 8,
307 adapter->product_info.fw_version[1] & 0x0f,
308 adapter->product_info.fw_version[0] >> 8,
309 adapter->product_info.fw_version[0] & 0x0f);
310 sprintf (adapter->bios_version, "%c%d%d.%d%d",
311 adapter->product_info.bios_version[2],
312 adapter->product_info.bios_version[1] >> 8,
313 adapter->product_info.bios_version[1] & 0x0f,
314 adapter->product_info.bios_version[0] >> 8,
315 adapter->product_info.bios_version[0] & 0x0f);
316 } else {
317 memcpy(adapter->fw_version,
318 (char *)adapter->product_info.fw_version, 4);
319 adapter->fw_version[4] = 0;
320
321 memcpy(adapter->bios_version,
322 (char *)adapter->product_info.bios_version, 4);
323
324 adapter->bios_version[4] = 0;
325 }
326
327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
328 adapter->fw_version, adapter->bios_version, adapter->numldrv);
329
330 /*
331 * Do we support extended (>10 bytes) cdbs
332 */
333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
334 if (adapter->support_ext_cdb)
335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
336
337
338 return 0;
339 }
340
341 /**
342 * mega_runpendq()
343 * @adapter - pointer to our soft state
344 *
345 * Runs through the list of pending requests.
346 */
347 static inline void
348 mega_runpendq(adapter_t *adapter)
349 {
350 if(!list_empty(&adapter->pending_list))
351 __mega_runpendq(adapter);
352 }
353
354 /*
355 * megaraid_queue()
356 * @scmd - Issue this scsi command
357 * @done - the callback hook into the scsi mid-layer
358 *
359 * The command queuing entry point for the mid-layer.
360 */
361 static int
362 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
363 {
364 adapter_t *adapter;
365 scb_t *scb;
366 int busy=0;
367 unsigned long flags;
368
369 adapter = (adapter_t *)scmd->device->host->hostdata;
370
371 scmd->scsi_done = done;
372
373
374 /*
375 * Allocate and build a SCB request
376 * busy flag will be set if mega_build_cmd() command could not
377 * allocate scb. We will return non-zero status in that case.
378 * NOTE: scb can be null even though certain commands completed
379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
380 * return 0 in that case.
381 */
382
383 spin_lock_irqsave(&adapter->lock, flags);
384 scb = mega_build_cmd(adapter, scmd, &busy);
385 if (!scb)
386 goto out;
387
388 scb->state |= SCB_PENDQ;
389 list_add_tail(&scb->list, &adapter->pending_list);
390
391 /*
392 * Check if the HBA is in quiescent state, e.g., during a
393 * delete logical drive opertion. If it is, don't run
394 * the pending_list.
395 */
396 if (atomic_read(&adapter->quiescent) == 0)
397 mega_runpendq(adapter);
398
399 busy = 0;
400 out:
401 spin_unlock_irqrestore(&adapter->lock, flags);
402 return busy;
403 }
404
405 /**
406 * mega_allocate_scb()
407 * @adapter - pointer to our soft state
408 * @cmd - scsi command from the mid-layer
409 *
410 * Allocate a SCB structure. This is the central structure for controller
411 * commands.
412 */
413 static inline scb_t *
414 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
415 {
416 struct list_head *head = &adapter->free_list;
417 scb_t *scb;
418
419 /* Unlink command from Free List */
420 if( !list_empty(head) ) {
421
422 scb = list_entry(head->next, scb_t, list);
423
424 list_del_init(head->next);
425
426 scb->state = SCB_ACTIVE;
427 scb->cmd = cmd;
428 scb->dma_type = MEGA_DMA_TYPE_NONE;
429
430 return scb;
431 }
432
433 return NULL;
434 }
435
436 /**
437 * mega_get_ldrv_num()
438 * @adapter - pointer to our soft state
439 * @cmd - scsi mid layer command
440 * @channel - channel on the controller
441 *
442 * Calculate the logical drive number based on the information in scsi command
443 * and the channel number.
444 */
445 static inline int
446 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
447 {
448 int tgt;
449 int ldrv_num;
450
451 tgt = cmd->device->id;
452
453 if ( tgt > adapter->this_id )
454 tgt--; /* we do not get inquires for initiator id */
455
456 ldrv_num = (channel * 15) + tgt;
457
458
459 /*
460 * If we have a logical drive with boot enabled, project it first
461 */
462 if( adapter->boot_ldrv_enabled ) {
463 if( ldrv_num == 0 ) {
464 ldrv_num = adapter->boot_ldrv;
465 }
466 else {
467 if( ldrv_num <= adapter->boot_ldrv ) {
468 ldrv_num--;
469 }
470 }
471 }
472
473 /*
474 * If "delete logical drive" feature is enabled on this controller.
475 * Do only if at least one delete logical drive operation was done.
476 *
477 * Also, after logical drive deletion, instead of logical drive number,
478 * the value returned should be 0x80+logical drive id.
479 *
480 * These is valid only for IO commands.
481 */
482
483 if (adapter->support_random_del && adapter->read_ldidmap )
484 switch (cmd->cmnd[0]) {
485 case READ_6: /* fall through */
486 case WRITE_6: /* fall through */
487 case READ_10: /* fall through */
488 case WRITE_10:
489 ldrv_num += 0x80;
490 }
491
492 return ldrv_num;
493 }
494
495 /**
496 * mega_build_cmd()
497 * @adapter - pointer to our soft state
498 * @cmd - Prepare using this scsi command
499 * @busy - busy flag if no resources
500 *
501 * Prepares a command and scatter gather list for the controller. This routine
502 * also finds out if the commands is intended for a logical drive or a
503 * physical device and prepares the controller command accordingly.
504 *
505 * We also re-order the logical drives and physical devices based on their
506 * boot settings.
507 */
508 static scb_t *
509 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
510 {
511 mega_ext_passthru *epthru;
512 mega_passthru *pthru;
513 scb_t *scb;
514 mbox_t *mbox;
515 long seg;
516 char islogical;
517 int max_ldrv_num;
518 int channel = 0;
519 int target = 0;
520 int ldrv_num = 0; /* logical drive number */
521
522
523 /*
524 * filter the internal and ioctl commands
525 */
526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
527 return cmd->request_buffer;
528 }
529
530
531 /*
532 * We know what channels our logical drives are on - mega_find_card()
533 */
534 islogical = adapter->logdrv_chan[cmd->device->channel];
535
536 /*
537 * The theory: If physical drive is chosen for boot, all the physical
538 * devices are exported before the logical drives, otherwise physical
539 * devices are pushed after logical drives, in which case - Kernel sees
540 * the physical devices on virtual channel which is obviously converted
541 * to actual channel on the HBA.
542 */
543 if( adapter->boot_pdrv_enabled ) {
544 if( islogical ) {
545 /* logical channel */
546 channel = cmd->device->channel -
547 adapter->product_info.nchannels;
548 }
549 else {
550 /* this is physical channel */
551 channel = cmd->device->channel;
552 target = cmd->device->id;
553
554 /*
555 * boot from a physical disk, that disk needs to be
556 * exposed first IF both the channels are SCSI, then
557 * booting from the second channel is not allowed.
558 */
559 if( target == 0 ) {
560 target = adapter->boot_pdrv_tgt;
561 }
562 else if( target == adapter->boot_pdrv_tgt ) {
563 target = 0;
564 }
565 }
566 }
567 else {
568 if( islogical ) {
569 /* this is the logical channel */
570 channel = cmd->device->channel;
571 }
572 else {
573 /* physical channel */
574 channel = cmd->device->channel - NVIRT_CHAN;
575 target = cmd->device->id;
576 }
577 }
578
579
580 if(islogical) {
581
582 /* have just LUN 0 for each target on virtual channels */
583 if (cmd->device->lun) {
584 cmd->result = (DID_BAD_TARGET << 16);
585 cmd->scsi_done(cmd);
586 return NULL;
587 }
588
589 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
590
591
592 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
593 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
594
595 /*
596 * max_ldrv_num increases by 0x80 if some logical drive was
597 * deleted.
598 */
599 if(adapter->read_ldidmap)
600 max_ldrv_num += 0x80;
601
602 if(ldrv_num > max_ldrv_num ) {
603 cmd->result = (DID_BAD_TARGET << 16);
604 cmd->scsi_done(cmd);
605 return NULL;
606 }
607
608 }
609 else {
610 if( cmd->device->lun > 7) {
611 /*
612 * Do not support lun >7 for physically accessed
613 * devices
614 */
615 cmd->result = (DID_BAD_TARGET << 16);
616 cmd->scsi_done(cmd);
617 return NULL;
618 }
619 }
620
621 /*
622 *
623 * Logical drive commands
624 *
625 */
626 if(islogical) {
627 switch (cmd->cmnd[0]) {
628 case TEST_UNIT_READY:
629 #if MEGA_HAVE_CLUSTERING
630 /*
631 * Do we support clustering and is the support enabled
632 * If no, return success always
633 */
634 if( !adapter->has_cluster ) {
635 cmd->result = (DID_OK << 16);
636 cmd->scsi_done(cmd);
637 return NULL;
638 }
639
640 if(!(scb = mega_allocate_scb(adapter, cmd))) {
641 *busy = 1;
642 return NULL;
643 }
644
645 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
646 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
647 scb->raw_mbox[3] = ldrv_num;
648
649 scb->dma_direction = PCI_DMA_NONE;
650
651 return scb;
652 #else
653 cmd->result = (DID_OK << 16);
654 cmd->scsi_done(cmd);
655 return NULL;
656 #endif
657
658 case MODE_SENSE: {
659 char *buf;
660
661 if (cmd->use_sg) {
662 struct scatterlist *sg;
663
664 sg = (struct scatterlist *)cmd->request_buffer;
665 buf = kmap_atomic(sg->page, KM_IRQ0) +
666 sg->offset;
667 } else
668 buf = cmd->request_buffer;
669 memset(buf, 0, cmd->cmnd[4]);
670 if (cmd->use_sg) {
671 struct scatterlist *sg;
672
673 sg = (struct scatterlist *)cmd->request_buffer;
674 kunmap_atomic(buf - sg->offset, KM_IRQ0);
675 }
676 cmd->result = (DID_OK << 16);
677 cmd->scsi_done(cmd);
678 return NULL;
679 }
680
681 case READ_CAPACITY:
682 case INQUIRY:
683
684 if(!(adapter->flag & (1L << cmd->device->channel))) {
685
686 printk(KERN_NOTICE
687 "scsi%d: scanning scsi channel %d ",
688 adapter->host->host_no,
689 cmd->device->channel);
690 printk("for logical drives.\n");
691
692 adapter->flag |= (1L << cmd->device->channel);
693 }
694
695 /* Allocate a SCB and initialize passthru */
696 if(!(scb = mega_allocate_scb(adapter, cmd))) {
697 *busy = 1;
698 return NULL;
699 }
700 pthru = scb->pthru;
701
702 mbox = (mbox_t *)scb->raw_mbox;
703 memset(mbox, 0, sizeof(scb->raw_mbox));
704 memset(pthru, 0, sizeof(mega_passthru));
705
706 pthru->timeout = 0;
707 pthru->ars = 1;
708 pthru->reqsenselen = 14;
709 pthru->islogical = 1;
710 pthru->logdrv = ldrv_num;
711 pthru->cdblen = cmd->cmd_len;
712 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
713
714 if( adapter->has_64bit_addr ) {
715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
716 }
717 else {
718 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
719 }
720
721 scb->dma_direction = PCI_DMA_FROMDEVICE;
722
723 pthru->numsgelements = mega_build_sglist(adapter, scb,
724 &pthru->dataxferaddr, &pthru->dataxferlen);
725
726 mbox->m_out.xferaddr = scb->pthru_dma_addr;
727
728 return scb;
729
730 case READ_6:
731 case WRITE_6:
732 case READ_10:
733 case WRITE_10:
734 case READ_12:
735 case WRITE_12:
736
737 /* Allocate a SCB and initialize mailbox */
738 if(!(scb = mega_allocate_scb(adapter, cmd))) {
739 *busy = 1;
740 return NULL;
741 }
742 mbox = (mbox_t *)scb->raw_mbox;
743
744 memset(mbox, 0, sizeof(scb->raw_mbox));
745 mbox->m_out.logdrv = ldrv_num;
746
747 /*
748 * A little hack: 2nd bit is zero for all scsi read
749 * commands and is set for all scsi write commands
750 */
751 if( adapter->has_64bit_addr ) {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE64:
754 MEGA_MBOXCMD_LREAD64 ;
755 }
756 else {
757 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
758 MEGA_MBOXCMD_LWRITE:
759 MEGA_MBOXCMD_LREAD ;
760 }
761
762 /*
763 * 6-byte READ(0x08) or WRITE(0x0A) cdb
764 */
765 if( cmd->cmd_len == 6 ) {
766 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
767 mbox->m_out.lba =
768 ((u32)cmd->cmnd[1] << 16) |
769 ((u32)cmd->cmnd[2] << 8) |
770 (u32)cmd->cmnd[3];
771
772 mbox->m_out.lba &= 0x1FFFFF;
773
774 #if MEGA_HAVE_STATS
775 /*
776 * Take modulo 0x80, since the logical drive
777 * number increases by 0x80 when a logical
778 * drive was deleted
779 */
780 if (*cmd->cmnd == READ_6) {
781 adapter->nreads[ldrv_num%0x80]++;
782 adapter->nreadblocks[ldrv_num%0x80] +=
783 mbox->m_out.numsectors;
784 } else {
785 adapter->nwrites[ldrv_num%0x80]++;
786 adapter->nwriteblocks[ldrv_num%0x80] +=
787 mbox->m_out.numsectors;
788 }
789 #endif
790 }
791
792 /*
793 * 10-byte READ(0x28) or WRITE(0x2A) cdb
794 */
795 if( cmd->cmd_len == 10 ) {
796 mbox->m_out.numsectors =
797 (u32)cmd->cmnd[8] |
798 ((u32)cmd->cmnd[7] << 8);
799 mbox->m_out.lba =
800 ((u32)cmd->cmnd[2] << 24) |
801 ((u32)cmd->cmnd[3] << 16) |
802 ((u32)cmd->cmnd[4] << 8) |
803 (u32)cmd->cmnd[5];
804
805 #if MEGA_HAVE_STATS
806 if (*cmd->cmnd == READ_10) {
807 adapter->nreads[ldrv_num%0x80]++;
808 adapter->nreadblocks[ldrv_num%0x80] +=
809 mbox->m_out.numsectors;
810 } else {
811 adapter->nwrites[ldrv_num%0x80]++;
812 adapter->nwriteblocks[ldrv_num%0x80] +=
813 mbox->m_out.numsectors;
814 }
815 #endif
816 }
817
818 /*
819 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
820 */
821 if( cmd->cmd_len == 12 ) {
822 mbox->m_out.lba =
823 ((u32)cmd->cmnd[2] << 24) |
824 ((u32)cmd->cmnd[3] << 16) |
825 ((u32)cmd->cmnd[4] << 8) |
826 (u32)cmd->cmnd[5];
827
828 mbox->m_out.numsectors =
829 ((u32)cmd->cmnd[6] << 24) |
830 ((u32)cmd->cmnd[7] << 16) |
831 ((u32)cmd->cmnd[8] << 8) |
832 (u32)cmd->cmnd[9];
833
834 #if MEGA_HAVE_STATS
835 if (*cmd->cmnd == READ_12) {
836 adapter->nreads[ldrv_num%0x80]++;
837 adapter->nreadblocks[ldrv_num%0x80] +=
838 mbox->m_out.numsectors;
839 } else {
840 adapter->nwrites[ldrv_num%0x80]++;
841 adapter->nwriteblocks[ldrv_num%0x80] +=
842 mbox->m_out.numsectors;
843 }
844 #endif
845 }
846
847 /*
848 * If it is a read command
849 */
850 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
851 scb->dma_direction = PCI_DMA_FROMDEVICE;
852 }
853 else {
854 scb->dma_direction = PCI_DMA_TODEVICE;
855 }
856
857 /* Calculate Scatter-Gather info */
858 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
859 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
860
861 return scb;
862
863 #if MEGA_HAVE_CLUSTERING
864 case RESERVE: /* Fall through */
865 case RELEASE:
866
867 /*
868 * Do we support clustering and is the support enabled
869 */
870 if( ! adapter->has_cluster ) {
871
872 cmd->result = (DID_BAD_TARGET << 16);
873 cmd->scsi_done(cmd);
874 return NULL;
875 }
876
877 /* Allocate a SCB and initialize mailbox */
878 if(!(scb = mega_allocate_scb(adapter, cmd))) {
879 *busy = 1;
880 return NULL;
881 }
882
883 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
884 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
885 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
886
887 scb->raw_mbox[3] = ldrv_num;
888
889 scb->dma_direction = PCI_DMA_NONE;
890
891 return scb;
892 #endif
893
894 default:
895 cmd->result = (DID_BAD_TARGET << 16);
896 cmd->scsi_done(cmd);
897 return NULL;
898 }
899 }
900
901 /*
902 * Passthru drive commands
903 */
904 else {
905 /* Allocate a SCB and initialize passthru */
906 if(!(scb = mega_allocate_scb(adapter, cmd))) {
907 *busy = 1;
908 return NULL;
909 }
910
911 mbox = (mbox_t *)scb->raw_mbox;
912 memset(mbox, 0, sizeof(scb->raw_mbox));
913
914 if( adapter->support_ext_cdb ) {
915
916 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
917 channel, target);
918
919 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
920
921 mbox->m_out.xferaddr = scb->epthru_dma_addr;
922
923 }
924 else {
925
926 pthru = mega_prepare_passthru(adapter, scb, cmd,
927 channel, target);
928
929 /* Initialize mailbox */
930 if( adapter->has_64bit_addr ) {
931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
932 }
933 else {
934 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
935 }
936
937 mbox->m_out.xferaddr = scb->pthru_dma_addr;
938
939 }
940 return scb;
941 }
942 return NULL;
943 }
944
945
946 /**
947 * mega_prepare_passthru()
948 * @adapter - pointer to our soft state
949 * @scb - our scsi control block
950 * @cmd - scsi command from the mid-layer
951 * @channel - actual channel on the controller
952 * @target - actual id on the controller.
953 *
954 * prepare a command for the scsi physical devices.
955 */
956 static mega_passthru *
957 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
958 int channel, int target)
959 {
960 mega_passthru *pthru;
961
962 pthru = scb->pthru;
963 memset(pthru, 0, sizeof (mega_passthru));
964
965 /* 0=6sec/1=60sec/2=10min/3=3hrs */
966 pthru->timeout = 2;
967
968 pthru->ars = 1;
969 pthru->reqsenselen = 14;
970 pthru->islogical = 0;
971
972 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
973
974 pthru->target = (adapter->flag & BOARD_40LD) ?
975 (channel << 4) | target : target;
976
977 pthru->cdblen = cmd->cmd_len;
978 pthru->logdrv = cmd->device->lun;
979
980 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
981
982 /* Not sure about the direction */
983 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
984
985 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
986 switch (cmd->cmnd[0]) {
987 case INQUIRY:
988 case READ_CAPACITY:
989 if(!(adapter->flag & (1L << cmd->device->channel))) {
990
991 printk(KERN_NOTICE
992 "scsi%d: scanning scsi channel %d [P%d] ",
993 adapter->host->host_no,
994 cmd->device->channel, channel);
995 printk("for physical devices.\n");
996
997 adapter->flag |= (1L << cmd->device->channel);
998 }
999 /* Fall through */
1000 default:
1001 pthru->numsgelements = mega_build_sglist(adapter, scb,
1002 &pthru->dataxferaddr, &pthru->dataxferlen);
1003 break;
1004 }
1005 return pthru;
1006 }
1007
1008
1009 /**
1010 * mega_prepare_extpassthru()
1011 * @adapter - pointer to our soft state
1012 * @scb - our scsi control block
1013 * @cmd - scsi command from the mid-layer
1014 * @channel - actual channel on the controller
1015 * @target - actual id on the controller.
1016 *
1017 * prepare a command for the scsi physical devices. This rountine prepares
1018 * commands for devices which can take extended CDBs (>10 bytes)
1019 */
1020 static mega_ext_passthru *
1021 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1022 int channel, int target)
1023 {
1024 mega_ext_passthru *epthru;
1025
1026 epthru = scb->epthru;
1027 memset(epthru, 0, sizeof(mega_ext_passthru));
1028
1029 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1030 epthru->timeout = 2;
1031
1032 epthru->ars = 1;
1033 epthru->reqsenselen = 14;
1034 epthru->islogical = 0;
1035
1036 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1037 epthru->target = (adapter->flag & BOARD_40LD) ?
1038 (channel << 4) | target : target;
1039
1040 epthru->cdblen = cmd->cmd_len;
1041 epthru->logdrv = cmd->device->lun;
1042
1043 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1044
1045 /* Not sure about the direction */
1046 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1047
1048 switch(cmd->cmnd[0]) {
1049 case INQUIRY:
1050 case READ_CAPACITY:
1051 if(!(adapter->flag & (1L << cmd->device->channel))) {
1052
1053 printk(KERN_NOTICE
1054 "scsi%d: scanning scsi channel %d [P%d] ",
1055 adapter->host->host_no,
1056 cmd->device->channel, channel);
1057 printk("for physical devices.\n");
1058
1059 adapter->flag |= (1L << cmd->device->channel);
1060 }
1061 /* Fall through */
1062 default:
1063 epthru->numsgelements = mega_build_sglist(adapter, scb,
1064 &epthru->dataxferaddr, &epthru->dataxferlen);
1065 break;
1066 }
1067
1068 return epthru;
1069 }
1070
1071 static void
1072 __mega_runpendq(adapter_t *adapter)
1073 {
1074 scb_t *scb;
1075 struct list_head *pos, *next;
1076
1077 /* Issue any pending commands to the card */
1078 list_for_each_safe(pos, next, &adapter->pending_list) {
1079
1080 scb = list_entry(pos, scb_t, list);
1081
1082 if( !(scb->state & SCB_ISSUED) ) {
1083
1084 if( issue_scb(adapter, scb) != 0 )
1085 return;
1086 }
1087 }
1088
1089 return;
1090 }
1091
1092
1093 /**
1094 * issue_scb()
1095 * @adapter - pointer to our soft state
1096 * @scb - scsi control block
1097 *
1098 * Post a command to the card if the mailbox is available, otherwise return
1099 * busy. We also take the scb from the pending list if the mailbox is
1100 * available.
1101 */
1102 static int
1103 issue_scb(adapter_t *adapter, scb_t *scb)
1104 {
1105 volatile mbox64_t *mbox64 = adapter->mbox64;
1106 volatile mbox_t *mbox = adapter->mbox;
1107 unsigned int i = 0;
1108
1109 if(unlikely(mbox->m_in.busy)) {
1110 do {
1111 udelay(1);
1112 i++;
1113 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1114
1115 if(mbox->m_in.busy) return -1;
1116 }
1117
1118 /* Copy mailbox data into host structure */
1119 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1120 sizeof(struct mbox_out));
1121
1122 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1123 mbox->m_in.busy = 1; /* Set busy */
1124
1125
1126 /*
1127 * Increment the pending queue counter
1128 */
1129 atomic_inc(&adapter->pend_cmds);
1130
1131 switch (mbox->m_out.cmd) {
1132 case MEGA_MBOXCMD_LREAD64:
1133 case MEGA_MBOXCMD_LWRITE64:
1134 case MEGA_MBOXCMD_PASSTHRU64:
1135 case MEGA_MBOXCMD_EXTPTHRU:
1136 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1137 mbox64->xfer_segment_hi = 0;
1138 mbox->m_out.xferaddr = 0xFFFFFFFF;
1139 break;
1140 default:
1141 mbox64->xfer_segment_lo = 0;
1142 mbox64->xfer_segment_hi = 0;
1143 }
1144
1145 /*
1146 * post the command
1147 */
1148 scb->state |= SCB_ISSUED;
1149
1150 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1151 mbox->m_in.poll = 0;
1152 mbox->m_in.ack = 0;
1153 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1154 }
1155 else {
1156 irq_enable(adapter);
1157 issue_command(adapter);
1158 }
1159
1160 return 0;
1161 }
1162
1163 /*
1164 * Wait until the controller's mailbox is available
1165 */
1166 static inline int
1167 mega_busywait_mbox (adapter_t *adapter)
1168 {
1169 if (adapter->mbox->m_in.busy)
1170 return __mega_busywait_mbox(adapter);
1171 return 0;
1172 }
1173
1174 /**
1175 * issue_scb_block()
1176 * @adapter - pointer to our soft state
1177 * @raw_mbox - the mailbox
1178 *
1179 * Issue a scb in synchronous and non-interrupt mode
1180 */
1181 static int
1182 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1183 {
1184 volatile mbox64_t *mbox64 = adapter->mbox64;
1185 volatile mbox_t *mbox = adapter->mbox;
1186 u8 byte;
1187
1188 /* Wait until mailbox is free */
1189 if(mega_busywait_mbox (adapter))
1190 goto bug_blocked_mailbox;
1191
1192 /* Copy mailbox data into host structure */
1193 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1194 mbox->m_out.cmdid = 0xFE;
1195 mbox->m_in.busy = 1;
1196
1197 switch (raw_mbox[0]) {
1198 case MEGA_MBOXCMD_LREAD64:
1199 case MEGA_MBOXCMD_LWRITE64:
1200 case MEGA_MBOXCMD_PASSTHRU64:
1201 case MEGA_MBOXCMD_EXTPTHRU:
1202 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1203 mbox64->xfer_segment_hi = 0;
1204 mbox->m_out.xferaddr = 0xFFFFFFFF;
1205 break;
1206 default:
1207 mbox64->xfer_segment_lo = 0;
1208 mbox64->xfer_segment_hi = 0;
1209 }
1210
1211 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1212 mbox->m_in.poll = 0;
1213 mbox->m_in.ack = 0;
1214 mbox->m_in.numstatus = 0xFF;
1215 mbox->m_in.status = 0xFF;
1216 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1217
1218 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1219 cpu_relax();
1220
1221 mbox->m_in.numstatus = 0xFF;
1222
1223 while( (volatile u8)mbox->m_in.poll != 0x77 )
1224 cpu_relax();
1225
1226 mbox->m_in.poll = 0;
1227 mbox->m_in.ack = 0x77;
1228
1229 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1230
1231 while(RDINDOOR(adapter) & 0x2)
1232 cpu_relax();
1233 }
1234 else {
1235 irq_disable(adapter);
1236 issue_command(adapter);
1237
1238 while (!((byte = irq_state(adapter)) & INTR_VALID))
1239 cpu_relax();
1240
1241 set_irq_state(adapter, byte);
1242 irq_enable(adapter);
1243 irq_ack(adapter);
1244 }
1245
1246 return mbox->m_in.status;
1247
1248 bug_blocked_mailbox:
1249 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1250 udelay (1000);
1251 return -1;
1252 }
1253
1254
1255 /**
1256 * megaraid_isr_iomapped()
1257 * @irq - irq
1258 * @devp - pointer to our soft state
1259 *
1260 * Interrupt service routine for io-mapped controllers.
1261 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1262 * and service the completed commands.
1263 */
1264 static irqreturn_t
1265 megaraid_isr_iomapped(int irq, void *devp)
1266 {
1267 adapter_t *adapter = devp;
1268 unsigned long flags;
1269 u8 status;
1270 u8 nstatus;
1271 u8 completed[MAX_FIRMWARE_STATUS];
1272 u8 byte;
1273 int handled = 0;
1274
1275
1276 /*
1277 * loop till F/W has more commands for us to complete.
1278 */
1279 spin_lock_irqsave(&adapter->lock, flags);
1280
1281 do {
1282 /* Check if a valid interrupt is pending */
1283 byte = irq_state(adapter);
1284 if( (byte & VALID_INTR_BYTE) == 0 ) {
1285 /*
1286 * No more pending commands
1287 */
1288 goto out_unlock;
1289 }
1290 set_irq_state(adapter, byte);
1291
1292 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1293 == 0xFF)
1294 cpu_relax();
1295 adapter->mbox->m_in.numstatus = 0xFF;
1296
1297 status = adapter->mbox->m_in.status;
1298
1299 /*
1300 * decrement the pending queue counter
1301 */
1302 atomic_sub(nstatus, &adapter->pend_cmds);
1303
1304 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1305 nstatus);
1306
1307 /* Acknowledge interrupt */
1308 irq_ack(adapter);
1309
1310 mega_cmd_done(adapter, completed, nstatus, status);
1311
1312 mega_rundoneq(adapter);
1313
1314 handled = 1;
1315
1316 /* Loop through any pending requests */
1317 if(atomic_read(&adapter->quiescent) == 0) {
1318 mega_runpendq(adapter);
1319 }
1320
1321 } while(1);
1322
1323 out_unlock:
1324
1325 spin_unlock_irqrestore(&adapter->lock, flags);
1326
1327 return IRQ_RETVAL(handled);
1328 }
1329
1330
1331 /**
1332 * megaraid_isr_memmapped()
1333 * @irq - irq
1334 * @devp - pointer to our soft state
1335 *
1336 * Interrupt service routine for memory-mapped controllers.
1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1338 * and service the completed commands.
1339 */
1340 static irqreturn_t
1341 megaraid_isr_memmapped(int irq, void *devp)
1342 {
1343 adapter_t *adapter = devp;
1344 unsigned long flags;
1345 u8 status;
1346 u32 dword = 0;
1347 u8 nstatus;
1348 u8 completed[MAX_FIRMWARE_STATUS];
1349 int handled = 0;
1350
1351
1352 /*
1353 * loop till F/W has more commands for us to complete.
1354 */
1355 spin_lock_irqsave(&adapter->lock, flags);
1356
1357 do {
1358 /* Check if a valid interrupt is pending */
1359 dword = RDOUTDOOR(adapter);
1360 if(dword != 0x10001234) {
1361 /*
1362 * No more pending commands
1363 */
1364 goto out_unlock;
1365 }
1366 WROUTDOOR(adapter, 0x10001234);
1367
1368 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1369 == 0xFF) {
1370 cpu_relax();
1371 }
1372 adapter->mbox->m_in.numstatus = 0xFF;
1373
1374 status = adapter->mbox->m_in.status;
1375
1376 /*
1377 * decrement the pending queue counter
1378 */
1379 atomic_sub(nstatus, &adapter->pend_cmds);
1380
1381 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1382 nstatus);
1383
1384 /* Acknowledge interrupt */
1385 WRINDOOR(adapter, 0x2);
1386
1387 handled = 1;
1388
1389 while( RDINDOOR(adapter) & 0x02 )
1390 cpu_relax();
1391
1392 mega_cmd_done(adapter, completed, nstatus, status);
1393
1394 mega_rundoneq(adapter);
1395
1396 /* Loop through any pending requests */
1397 if(atomic_read(&adapter->quiescent) == 0) {
1398 mega_runpendq(adapter);
1399 }
1400
1401 } while(1);
1402
1403 out_unlock:
1404
1405 spin_unlock_irqrestore(&adapter->lock, flags);
1406
1407 return IRQ_RETVAL(handled);
1408 }
1409 /**
1410 * mega_cmd_done()
1411 * @adapter - pointer to our soft state
1412 * @completed - array of ids of completed commands
1413 * @nstatus - number of completed commands
1414 * @status - status of the last command completed
1415 *
1416 * Complete the comamnds and call the scsi mid-layer callback hooks.
1417 */
1418 static void
1419 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1420 {
1421 mega_ext_passthru *epthru = NULL;
1422 struct scatterlist *sgl;
1423 Scsi_Cmnd *cmd = NULL;
1424 mega_passthru *pthru = NULL;
1425 mbox_t *mbox = NULL;
1426 u8 c;
1427 scb_t *scb;
1428 int islogical;
1429 int cmdid;
1430 int i;
1431
1432 /*
1433 * for all the commands completed, call the mid-layer callback routine
1434 * and free the scb.
1435 */
1436 for( i = 0; i < nstatus; i++ ) {
1437
1438 cmdid = completed[i];
1439
1440 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1441 scb = &adapter->int_scb;
1442 cmd = scb->cmd;
1443 mbox = (mbox_t *)scb->raw_mbox;
1444
1445 /*
1446 * Internal command interface do not fire the extended
1447 * passthru or 64-bit passthru
1448 */
1449 pthru = scb->pthru;
1450
1451 }
1452 else {
1453 scb = &adapter->scb_list[cmdid];
1454
1455 /*
1456 * Make sure f/w has completed a valid command
1457 */
1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 printk(KERN_CRIT
1460 "megaraid: invalid command ");
1461 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1462 cmdid, scb->state, scb->cmd);
1463
1464 continue;
1465 }
1466
1467 /*
1468 * Was a abort issued for this command
1469 */
1470 if( scb->state & SCB_ABORT ) {
1471
1472 printk(KERN_WARNING
1473 "megaraid: aborted cmd %lx[%x] complete.\n",
1474 scb->cmd->serial_number, scb->idx);
1475
1476 scb->cmd->result = (DID_ABORT << 16);
1477
1478 list_add_tail(SCSI_LIST(scb->cmd),
1479 &adapter->completed_list);
1480
1481 mega_free_scb(adapter, scb);
1482
1483 continue;
1484 }
1485
1486 /*
1487 * Was a reset issued for this command
1488 */
1489 if( scb->state & SCB_RESET ) {
1490
1491 printk(KERN_WARNING
1492 "megaraid: reset cmd %lx[%x] complete.\n",
1493 scb->cmd->serial_number, scb->idx);
1494
1495 scb->cmd->result = (DID_RESET << 16);
1496
1497 list_add_tail(SCSI_LIST(scb->cmd),
1498 &adapter->completed_list);
1499
1500 mega_free_scb (adapter, scb);
1501
1502 continue;
1503 }
1504
1505 cmd = scb->cmd;
1506 pthru = scb->pthru;
1507 epthru = scb->epthru;
1508 mbox = (mbox_t *)scb->raw_mbox;
1509
1510 #if MEGA_HAVE_STATS
1511 {
1512
1513 int logdrv = mbox->m_out.logdrv;
1514
1515 islogical = adapter->logdrv_chan[cmd->channel];
1516 /*
1517 * Maintain an error counter for the logical drive.
1518 * Some application like SNMP agent need such
1519 * statistics
1520 */
1521 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1522 cmd->cmnd[0] == READ_10 ||
1523 cmd->cmnd[0] == READ_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->rd_errors[logdrv%0x80]++;
1529 }
1530
1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1532 cmd->cmnd[0] == WRITE_10 ||
1533 cmd->cmnd[0] == WRITE_12)) {
1534 /*
1535 * Logical drive number increases by 0x80 when
1536 * a logical drive is deleted
1537 */
1538 adapter->wr_errors[logdrv%0x80]++;
1539 }
1540
1541 }
1542 #endif
1543 }
1544
1545 /*
1546 * Do not return the presence of hard disk on the channel so,
1547 * inquiry sent, and returned data==hard disk or removable
1548 * hard disk and not logical, request should return failure! -
1549 * PJ
1550 */
1551 islogical = adapter->logdrv_chan[cmd->device->channel];
1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1553
1554 if( cmd->use_sg ) {
1555 sgl = (struct scatterlist *)
1556 cmd->request_buffer;
1557
1558 if( sgl->page ) {
1559 c = *(unsigned char *)
1560 page_address((&sgl[0])->page) +
1561 (&sgl[0])->offset;
1562 }
1563 else {
1564 printk(KERN_WARNING
1565 "megaraid: invalid sg.\n");
1566 c = 0;
1567 }
1568 }
1569 else {
1570 c = *(u8 *)cmd->request_buffer;
1571 }
1572
1573 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1574 ((c & 0x1F ) == TYPE_DISK)) {
1575 status = 0xF0;
1576 }
1577 }
1578
1579 /* clear result; otherwise, success returns corrupt value */
1580 cmd->result = 0;
1581
1582 /* Convert MegaRAID status to Linux error code */
1583 switch (status) {
1584 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1585 cmd->result |= (DID_OK << 16);
1586 break;
1587
1588 case 0x02: /* ERROR_ABORTED, i.e.
1589 SCSI_STATUS_CHECK_CONDITION */
1590
1591 /* set sense_buffer and result fields */
1592 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1593 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1594
1595 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1596 14);
1597
1598 cmd->result = (DRIVER_SENSE << 24) |
1599 (DID_OK << 16) |
1600 (CHECK_CONDITION << 1);
1601 }
1602 else {
1603 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1604
1605 memcpy(cmd->sense_buffer,
1606 epthru->reqsensearea, 14);
1607
1608 cmd->result = (DRIVER_SENSE << 24) |
1609 (DID_OK << 16) |
1610 (CHECK_CONDITION << 1);
1611 } else {
1612 cmd->sense_buffer[0] = 0x70;
1613 cmd->sense_buffer[2] = ABORTED_COMMAND;
1614 cmd->result |= (CHECK_CONDITION << 1);
1615 }
1616 }
1617 break;
1618
1619 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1620 SCSI_STATUS_BUSY */
1621 cmd->result |= (DID_BUS_BUSY << 16) | status;
1622 break;
1623
1624 default:
1625 #if MEGA_HAVE_CLUSTERING
1626 /*
1627 * If TEST_UNIT_READY fails, we know
1628 * MEGA_RESERVATION_STATUS failed
1629 */
1630 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635 /*
1636 * Error code returned is 1 if Reserve or Release
1637 * failed or the input parameter is invalid
1638 */
1639 if( status == 1 &&
1640 (cmd->cmnd[0] == RESERVE ||
1641 cmd->cmnd[0] == RELEASE) ) {
1642
1643 cmd->result |= (DID_ERROR << 16) |
1644 (RESERVATION_CONFLICT << 1);
1645 }
1646 else
1647 #endif
1648 cmd->result |= (DID_BAD_TARGET << 16)|status;
1649 }
1650
1651 /*
1652 * Only free SCBs for the commands coming down from the
1653 * mid-layer, not for which were issued internally
1654 *
1655 * For internal command, restore the status returned by the
1656 * firmware so that user can interpret it.
1657 */
1658 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1659 cmd->result = status;
1660
1661 /*
1662 * Remove the internal command from the pending list
1663 */
1664 list_del_init(&scb->list);
1665 scb->state = SCB_FREE;
1666 }
1667 else {
1668 mega_free_scb(adapter, scb);
1669 }
1670
1671 /* Add Scsi_Command to end of completed queue */
1672 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1673 }
1674 }
1675
1676
1677 /*
1678 * mega_runpendq()
1679 *
1680 * Run through the list of completed requests and finish it
1681 */
1682 static void
1683 mega_rundoneq (adapter_t *adapter)
1684 {
1685 Scsi_Cmnd *cmd;
1686 struct list_head *pos;
1687
1688 list_for_each(pos, &adapter->completed_list) {
1689
1690 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1691
1692 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1693 cmd->scsi_done(cmd);
1694 }
1695
1696 INIT_LIST_HEAD(&adapter->completed_list);
1697 }
1698
1699
1700 /*
1701 * Free a SCB structure
1702 * Note: We assume the scsi commands associated with this scb is not free yet.
1703 */
1704 static void
1705 mega_free_scb(adapter_t *adapter, scb_t *scb)
1706 {
1707 unsigned long length;
1708
1709 switch( scb->dma_type ) {
1710
1711 case MEGA_DMA_TYPE_NONE:
1712 break;
1713
1714 case MEGA_BULK_DATA:
1715 if (scb->cmd->use_sg == 0)
1716 length = scb->cmd->request_bufflen;
1717 else {
1718 struct scatterlist *sgl =
1719 (struct scatterlist *)scb->cmd->request_buffer;
1720 length = sgl->length;
1721 }
1722 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1723 length, scb->dma_direction);
1724 break;
1725
1726 case MEGA_SGLIST:
1727 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1728 scb->cmd->use_sg, scb->dma_direction);
1729 break;
1730
1731 default:
1732 break;
1733 }
1734
1735 /*
1736 * Remove from the pending list
1737 */
1738 list_del_init(&scb->list);
1739
1740 /* Link the scb back into free list */
1741 scb->state = SCB_FREE;
1742 scb->cmd = NULL;
1743
1744 list_add(&scb->list, &adapter->free_list);
1745 }
1746
1747
1748 static int
1749 __mega_busywait_mbox (adapter_t *adapter)
1750 {
1751 volatile mbox_t *mbox = adapter->mbox;
1752 long counter;
1753
1754 for (counter = 0; counter < 10000; counter++) {
1755 if (!mbox->m_in.busy)
1756 return 0;
1757 udelay(100); yield();
1758 }
1759 return -1; /* give up after 1 second */
1760 }
1761
1762 /*
1763 * Copies data to SGLIST
1764 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1765 */
1766 static int
1767 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1768 {
1769 struct scatterlist *sgl;
1770 struct page *page;
1771 unsigned long offset;
1772 unsigned int length;
1773 Scsi_Cmnd *cmd;
1774 int sgcnt;
1775 int idx;
1776
1777 cmd = scb->cmd;
1778
1779 /* Scatter-gather not used */
1780 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1781 !adapter->has_64bit_addr)) {
1782
1783 if (cmd->use_sg == 0) {
1784 page = virt_to_page(cmd->request_buffer);
1785 offset = offset_in_page(cmd->request_buffer);
1786 length = cmd->request_bufflen;
1787 } else {
1788 sgl = (struct scatterlist *)cmd->request_buffer;
1789 page = sgl->page;
1790 offset = sgl->offset;
1791 length = sgl->length;
1792 }
1793
1794 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1795 page, offset,
1796 length,
1797 scb->dma_direction);
1798 scb->dma_type = MEGA_BULK_DATA;
1799
1800 /*
1801 * We need to handle special 64-bit commands that need a
1802 * minimum of 1 SG
1803 */
1804 if( adapter->has_64bit_addr ) {
1805 scb->sgl64[0].address = scb->dma_h_bulkdata;
1806 scb->sgl64[0].length = length;
1807 *buf = (u32)scb->sgl_dma_addr;
1808 *len = (u32)length;
1809 return 1;
1810 }
1811 else {
1812 *buf = (u32)scb->dma_h_bulkdata;
1813 *len = (u32)length;
1814 }
1815 return 0;
1816 }
1817
1818 sgl = (struct scatterlist *)cmd->request_buffer;
1819
1820 /*
1821 * Copy Scatter-Gather list info into controller structure.
1822 *
1823 * The number of sg elements returned must not exceed our limit
1824 */
1825 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1826 scb->dma_direction);
1827
1828 scb->dma_type = MEGA_SGLIST;
1829
1830 BUG_ON(sgcnt > adapter->sglen);
1831
1832 *len = 0;
1833
1834 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1835
1836 if( adapter->has_64bit_addr ) {
1837 scb->sgl64[idx].address = sg_dma_address(sgl);
1838 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1839 }
1840 else {
1841 scb->sgl[idx].address = sg_dma_address(sgl);
1842 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1843 }
1844 }
1845
1846 /* Reset pointer and length fields */
1847 *buf = scb->sgl_dma_addr;
1848
1849 /* Return count of SG requests */
1850 return sgcnt;
1851 }
1852
1853
1854 /*
1855 * mega_8_to_40ld()
1856 *
1857 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1858 * Enquiry3 structures for later use
1859 */
1860 static void
1861 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1862 mega_product_info *product_info)
1863 {
1864 int i;
1865
1866 product_info->max_commands = inquiry->adapter_info.max_commands;
1867 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1868 product_info->nchannels = inquiry->adapter_info.nchannels;
1869
1870 for (i = 0; i < 4; i++) {
1871 product_info->fw_version[i] =
1872 inquiry->adapter_info.fw_version[i];
1873
1874 product_info->bios_version[i] =
1875 inquiry->adapter_info.bios_version[i];
1876 }
1877 enquiry3->cache_flush_interval =
1878 inquiry->adapter_info.cache_flush_interval;
1879
1880 product_info->dram_size = inquiry->adapter_info.dram_size;
1881
1882 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1883
1884 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1885 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1886 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1887 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1888 }
1889
1890 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1891 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1892 }
1893
1894 static inline void
1895 mega_free_sgl(adapter_t *adapter)
1896 {
1897 scb_t *scb;
1898 int i;
1899
1900 for(i = 0; i < adapter->max_cmds; i++) {
1901
1902 scb = &adapter->scb_list[i];
1903
1904 if( scb->sgl64 ) {
1905 pci_free_consistent(adapter->dev,
1906 sizeof(mega_sgl64) * adapter->sglen,
1907 scb->sgl64,
1908 scb->sgl_dma_addr);
1909
1910 scb->sgl64 = NULL;
1911 }
1912
1913 if( scb->pthru ) {
1914 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1915 scb->pthru, scb->pthru_dma_addr);
1916
1917 scb->pthru = NULL;
1918 }
1919
1920 if( scb->epthru ) {
1921 pci_free_consistent(adapter->dev,
1922 sizeof(mega_ext_passthru),
1923 scb->epthru, scb->epthru_dma_addr);
1924
1925 scb->epthru = NULL;
1926 }
1927
1928 }
1929 }
1930
1931
1932 /*
1933 * Get information about the card/driver
1934 */
1935 const char *
1936 megaraid_info(struct Scsi_Host *host)
1937 {
1938 static char buffer[512];
1939 adapter_t *adapter;
1940
1941 adapter = (adapter_t *)host->hostdata;
1942
1943 sprintf (buffer,
1944 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1945 adapter->fw_version, adapter->product_info.max_commands,
1946 adapter->host->max_id, adapter->host->max_channel,
1947 adapter->host->max_lun);
1948 return buffer;
1949 }
1950
1951 /*
1952 * Abort a previous SCSI request. Only commands on the pending list can be
1953 * aborted. All the commands issued to the F/W must complete.
1954 */
1955 static int
1956 megaraid_abort(Scsi_Cmnd *cmd)
1957 {
1958 adapter_t *adapter;
1959 int rval;
1960
1961 adapter = (adapter_t *)cmd->device->host->hostdata;
1962
1963 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1964
1965 /*
1966 * This is required here to complete any completed requests
1967 * to be communicated over to the mid layer.
1968 */
1969 mega_rundoneq(adapter);
1970
1971 return rval;
1972 }
1973
1974
1975 static int
1976 megaraid_reset(struct scsi_cmnd *cmd)
1977 {
1978 adapter_t *adapter;
1979 megacmd_t mc;
1980 int rval;
1981
1982 adapter = (adapter_t *)cmd->device->host->hostdata;
1983
1984 #if MEGA_HAVE_CLUSTERING
1985 mc.cmd = MEGA_CLUSTER_CMD;
1986 mc.opcode = MEGA_RESET_RESERVATIONS;
1987
1988 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1989 printk(KERN_WARNING
1990 "megaraid: reservation reset failed.\n");
1991 }
1992 else {
1993 printk(KERN_INFO "megaraid: reservation reset.\n");
1994 }
1995 #endif
1996
1997 spin_lock_irq(&adapter->lock);
1998
1999 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
2000
2001 /*
2002 * This is required here to complete any completed requests
2003 * to be communicated over to the mid layer.
2004 */
2005 mega_rundoneq(adapter);
2006 spin_unlock_irq(&adapter->lock);
2007
2008 return rval;
2009 }
2010
2011 /**
2012 * megaraid_abort_and_reset()
2013 * @adapter - megaraid soft state
2014 * @cmd - scsi command to be aborted or reset
2015 * @aor - abort or reset flag
2016 *
2017 * Try to locate the scsi command in the pending queue. If found and is not
2018 * issued to the controller, abort/reset it. Otherwise return failure
2019 */
2020 static int
2021 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2022 {
2023 struct list_head *pos, *next;
2024 scb_t *scb;
2025
2026 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2027 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2028 cmd->cmnd[0], cmd->device->channel,
2029 cmd->device->id, cmd->device->lun);
2030
2031 if(list_empty(&adapter->pending_list))
2032 return FALSE;
2033
2034 list_for_each_safe(pos, next, &adapter->pending_list) {
2035
2036 scb = list_entry(pos, scb_t, list);
2037
2038 if (scb->cmd == cmd) { /* Found command */
2039
2040 scb->state |= aor;
2041
2042 /*
2043 * Check if this command has firmare owenership. If
2044 * yes, we cannot reset this command. Whenever, f/w
2045 * completes this command, we will return appropriate
2046 * status from ISR.
2047 */
2048 if( scb->state & SCB_ISSUED ) {
2049
2050 printk(KERN_WARNING
2051 "megaraid: %s-%lx[%x], fw owner.\n",
2052 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2053 cmd->serial_number, scb->idx);
2054
2055 return FALSE;
2056 }
2057 else {
2058
2059 /*
2060 * Not yet issued! Remove from the pending
2061 * list
2062 */
2063 printk(KERN_WARNING
2064 "megaraid: %s-%lx[%x], driver owner.\n",
2065 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2066 cmd->serial_number, scb->idx);
2067
2068 mega_free_scb(adapter, scb);
2069
2070 if( aor == SCB_ABORT ) {
2071 cmd->result = (DID_ABORT << 16);
2072 }
2073 else {
2074 cmd->result = (DID_RESET << 16);
2075 }
2076
2077 list_add_tail(SCSI_LIST(cmd),
2078 &adapter->completed_list);
2079
2080 return TRUE;
2081 }
2082 }
2083 }
2084
2085 return FALSE;
2086 }
2087
2088 static inline int
2089 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2090 {
2091 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2092
2093 if( *pdev == NULL ) return -1;
2094
2095 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2096
2097 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2098 kfree(*pdev);
2099 return -1;
2100 }
2101
2102 return 0;
2103 }
2104
2105 static inline void
2106 free_local_pdev(struct pci_dev *pdev)
2107 {
2108 kfree(pdev);
2109 }
2110
2111 /**
2112 * mega_allocate_inquiry()
2113 * @dma_handle - handle returned for dma address
2114 * @pdev - handle to pci device
2115 *
2116 * allocates memory for inquiry structure
2117 */
2118 static inline void *
2119 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2120 {
2121 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2122 }
2123
2124
2125 static inline void
2126 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2127 {
2128 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2129 }
2130
2131
2132 #ifdef CONFIG_PROC_FS
2133 /* Following code handles /proc fs */
2134
2135 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2136 S_IRUSR | S_IFREG, \
2137 controller_proc_dir_entry, \
2138 func, adapter)
2139
2140 /**
2141 * mega_create_proc_entry()
2142 * @index - index in soft state array
2143 * @parent - parent node for this /proc entry
2144 *
2145 * Creates /proc entries for our controllers.
2146 */
2147 static void
2148 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2149 {
2150 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2151 u8 string[64] = { 0 };
2152 adapter_t *adapter = hba_soft_state[index];
2153
2154 sprintf(string, "hba%d", adapter->host->host_no);
2155
2156 controller_proc_dir_entry =
2157 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2158
2159 if(!controller_proc_dir_entry) {
2160 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2161 return;
2162 }
2163 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2164 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2165 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2166 #if MEGA_HAVE_ENH_PROC
2167 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2168 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2169 proc_battery);
2170
2171 /*
2172 * Display each physical drive on its channel
2173 */
2174 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2175 proc_pdrv_ch0);
2176 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2177 proc_pdrv_ch1);
2178 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2179 proc_pdrv_ch2);
2180 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2181 proc_pdrv_ch3);
2182
2183 /*
2184 * Display a set of up to 10 logical drive through each of following
2185 * /proc entries
2186 */
2187 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2188 proc_rdrv_10);
2189 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2190 proc_rdrv_20);
2191 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2192 proc_rdrv_30);
2193 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2194 proc_rdrv_40);
2195 #endif
2196 }
2197
2198
2199 /**
2200 * proc_read_config()
2201 * @page - buffer to write the data in
2202 * @start - where the actual data has been written in page
2203 * @offset - same meaning as the read system call
2204 * @count - same meaning as the read system call
2205 * @eof - set if no more data needs to be returned
2206 * @data - pointer to our soft state
2207 *
2208 * Display configuration information about the controller.
2209 */
2210 static int
2211 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2212 void *data)
2213 {
2214
2215 adapter_t *adapter = (adapter_t *)data;
2216 int len = 0;
2217
2218 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2219
2220 if(adapter->product_info.product_name[0])
2221 len += sprintf(page+len, "%s\n",
2222 adapter->product_info.product_name);
2223
2224 len += sprintf(page+len, "Controller Type: ");
2225
2226 if( adapter->flag & BOARD_MEMMAP ) {
2227 len += sprintf(page+len,
2228 "438/466/467/471/493/518/520/531/532\n");
2229 }
2230 else {
2231 len += sprintf(page+len,
2232 "418/428/434\n");
2233 }
2234
2235 if(adapter->flag & BOARD_40LD) {
2236 len += sprintf(page+len,
2237 "Controller Supports 40 Logical Drives\n");
2238 }
2239
2240 if(adapter->flag & BOARD_64BIT) {
2241 len += sprintf(page+len,
2242 "Controller capable of 64-bit memory addressing\n");
2243 }
2244 if( adapter->has_64bit_addr ) {
2245 len += sprintf(page+len,
2246 "Controller using 64-bit memory addressing\n");
2247 }
2248 else {
2249 len += sprintf(page+len,
2250 "Controller is not using 64-bit memory addressing\n");
2251 }
2252
2253 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2254 adapter->host->irq);
2255
2256 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2257 adapter->numldrv, adapter->product_info.nchannels);
2258
2259 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2260 adapter->fw_version, adapter->bios_version,
2261 adapter->product_info.dram_size);
2262
2263 len += sprintf(page+len,
2264 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2265 adapter->product_info.max_commands, adapter->max_cmds);
2266
2267 len += sprintf(page+len, "support_ext_cdb = %d\n",
2268 adapter->support_ext_cdb);
2269 len += sprintf(page+len, "support_random_del = %d\n",
2270 adapter->support_random_del);
2271 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2272 adapter->boot_ldrv_enabled);
2273 len += sprintf(page+len, "boot_ldrv = %d\n",
2274 adapter->boot_ldrv);
2275 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2276 adapter->boot_pdrv_enabled);
2277 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2278 adapter->boot_pdrv_ch);
2279 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2280 adapter->boot_pdrv_tgt);
2281 len += sprintf(page+len, "quiescent = %d\n",
2282 atomic_read(&adapter->quiescent));
2283 len += sprintf(page+len, "has_cluster = %d\n",
2284 adapter->has_cluster);
2285
2286 len += sprintf(page+len, "\nModule Parameters:\n");
2287 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2288 max_cmd_per_lun);
2289 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2290 max_sectors_per_io);
2291
2292 *eof = 1;
2293
2294 return len;
2295 }
2296
2297
2298
2299 /**
2300 * proc_read_stat()
2301 * @page - buffer to write the data in
2302 * @start - where the actual data has been written in page
2303 * @offset - same meaning as the read system call
2304 * @count - same meaning as the read system call
2305 * @eof - set if no more data needs to be returned
2306 * @data - pointer to our soft state
2307 *
2308 * Diaplay statistical information about the I/O activity.
2309 */
2310 static int
2311 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2312 void *data)
2313 {
2314 adapter_t *adapter;
2315 int len;
2316 int i;
2317
2318 i = 0; /* avoid compilation warnings */
2319 len = 0;
2320 adapter = (adapter_t *)data;
2321
2322 len = sprintf(page, "Statistical Information for this controller\n");
2323 len += sprintf(page+len, "pend_cmds = %d\n",
2324 atomic_read(&adapter->pend_cmds));
2325 #if MEGA_HAVE_STATS
2326 for(i = 0; i < adapter->numldrv; i++) {
2327 len += sprintf(page+len, "Logical Drive %d:\n", i);
2328
2329 len += sprintf(page+len,
2330 "\tReads Issued = %lu, Writes Issued = %lu\n",
2331 adapter->nreads[i], adapter->nwrites[i]);
2332
2333 len += sprintf(page+len,
2334 "\tSectors Read = %lu, Sectors Written = %lu\n",
2335 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2336
2337 len += sprintf(page+len,
2338 "\tRead errors = %lu, Write errors = %lu\n\n",
2339 adapter->rd_errors[i], adapter->wr_errors[i]);
2340 }
2341 #else
2342 len += sprintf(page+len,
2343 "IO and error counters not compiled in driver.\n");
2344 #endif
2345
2346 *eof = 1;
2347
2348 return len;
2349 }
2350
2351
2352 /**
2353 * proc_read_mbox()
2354 * @page - buffer to write the data in
2355 * @start - where the actual data has been written in page
2356 * @offset - same meaning as the read system call
2357 * @count - same meaning as the read system call
2358 * @eof - set if no more data needs to be returned
2359 * @data - pointer to our soft state
2360 *
2361 * Display mailbox information for the last command issued. This information
2362 * is good for debugging.
2363 */
2364 static int
2365 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2366 void *data)
2367 {
2368
2369 adapter_t *adapter = (adapter_t *)data;
2370 volatile mbox_t *mbox = adapter->mbox;
2371 int len = 0;
2372
2373 len = sprintf(page, "Contents of Mail Box Structure\n");
2374 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2375 mbox->m_out.cmd);
2376 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2377 mbox->m_out.cmdid);
2378 len += sprintf(page+len, " No of Sectors= %04d\n",
2379 mbox->m_out.numsectors);
2380 len += sprintf(page+len, " LBA = 0x%02x\n",
2381 mbox->m_out.lba);
2382 len += sprintf(page+len, " DTA = 0x%08x\n",
2383 mbox->m_out.xferaddr);
2384 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2385 mbox->m_out.logdrv);
2386 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2387 mbox->m_out.numsgelements);
2388 len += sprintf(page+len, " Busy = %01x\n",
2389 mbox->m_in.busy);
2390 len += sprintf(page+len, " Status = 0x%02x\n",
2391 mbox->m_in.status);
2392
2393 *eof = 1;
2394
2395 return len;
2396 }
2397
2398
2399 /**
2400 * proc_rebuild_rate()
2401 * @page - buffer to write the data in
2402 * @start - where the actual data has been written in page
2403 * @offset - same meaning as the read system call
2404 * @count - same meaning as the read system call
2405 * @eof - set if no more data needs to be returned
2406 * @data - pointer to our soft state
2407 *
2408 * Display current rebuild rate
2409 */
2410 static int
2411 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2412 void *data)
2413 {
2414 adapter_t *adapter = (adapter_t *)data;
2415 dma_addr_t dma_handle;
2416 caddr_t inquiry;
2417 struct pci_dev *pdev;
2418 int len = 0;
2419
2420 if( make_local_pdev(adapter, &pdev) != 0 ) {
2421 *eof = 1;
2422 return len;
2423 }
2424
2425 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2426 free_local_pdev(pdev);
2427 *eof = 1;
2428 return len;
2429 }
2430
2431 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2432
2433 len = sprintf(page, "Adapter inquiry failed.\n");
2434
2435 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2436
2437 mega_free_inquiry(inquiry, dma_handle, pdev);
2438
2439 free_local_pdev(pdev);
2440
2441 *eof = 1;
2442
2443 return len;
2444 }
2445
2446 if( adapter->flag & BOARD_40LD ) {
2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2448 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2449 }
2450 else {
2451 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2452 ((mraid_ext_inquiry *)
2453 inquiry)->raid_inq.adapter_info.rebuild_rate);
2454 }
2455
2456
2457 mega_free_inquiry(inquiry, dma_handle, pdev);
2458
2459 free_local_pdev(pdev);
2460
2461 *eof = 1;
2462
2463 return len;
2464 }
2465
2466
2467 /**
2468 * proc_battery()
2469 * @page - buffer to write the data in
2470 * @start - where the actual data has been written in page
2471 * @offset - same meaning as the read system call
2472 * @count - same meaning as the read system call
2473 * @eof - set if no more data needs to be returned
2474 * @data - pointer to our soft state
2475 *
2476 * Display information about the battery module on the controller.
2477 */
2478 static int
2479 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2480 void *data)
2481 {
2482 adapter_t *adapter = (adapter_t *)data;
2483 dma_addr_t dma_handle;
2484 caddr_t inquiry;
2485 struct pci_dev *pdev;
2486 u8 battery_status = 0;
2487 char str[256];
2488 int len = 0;
2489
2490 if( make_local_pdev(adapter, &pdev) != 0 ) {
2491 *eof = 1;
2492 return len;
2493 }
2494
2495 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2496 free_local_pdev(pdev);
2497 *eof = 1;
2498 return len;
2499 }
2500
2501 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2502
2503 len = sprintf(page, "Adapter inquiry failed.\n");
2504
2505 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2506
2507 mega_free_inquiry(inquiry, dma_handle, pdev);
2508
2509 free_local_pdev(pdev);
2510
2511 *eof = 1;
2512
2513 return len;
2514 }
2515
2516 if( adapter->flag & BOARD_40LD ) {
2517 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2518 }
2519 else {
2520 battery_status = ((mraid_ext_inquiry *)inquiry)->
2521 raid_inq.adapter_info.battery_status;
2522 }
2523
2524 /*
2525 * Decode the battery status
2526 */
2527 sprintf(str, "Battery Status:[%d]", battery_status);
2528
2529 if(battery_status == MEGA_BATT_CHARGE_DONE)
2530 strcat(str, " Charge Done");
2531
2532 if(battery_status & MEGA_BATT_MODULE_MISSING)
2533 strcat(str, " Module Missing");
2534
2535 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2536 strcat(str, " Low Voltage");
2537
2538 if(battery_status & MEGA_BATT_TEMP_HIGH)
2539 strcat(str, " Temperature High");
2540
2541 if(battery_status & MEGA_BATT_PACK_MISSING)
2542 strcat(str, " Pack Missing");
2543
2544 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2545 strcat(str, " Charge In-progress");
2546
2547 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2548 strcat(str, " Charge Fail");
2549
2550 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2551 strcat(str, " Cycles Exceeded");
2552
2553 len = sprintf(page, "%s\n", str);
2554
2555
2556 mega_free_inquiry(inquiry, dma_handle, pdev);
2557
2558 free_local_pdev(pdev);
2559
2560 *eof = 1;
2561
2562 return len;
2563 }
2564
2565
2566 /**
2567 * proc_pdrv_ch0()
2568 * @page - buffer to write the data in
2569 * @start - where the actual data has been written in page
2570 * @offset - same meaning as the read system call
2571 * @count - same meaning as the read system call
2572 * @eof - set if no more data needs to be returned
2573 * @data - pointer to our soft state
2574 *
2575 * Display information about the physical drives on physical channel 0.
2576 */
2577 static int
2578 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2579 void *data)
2580 {
2581 adapter_t *adapter = (adapter_t *)data;
2582
2583 *eof = 1;
2584
2585 return (proc_pdrv(adapter, page, 0));
2586 }
2587
2588
2589 /**
2590 * proc_pdrv_ch1()
2591 * @page - buffer to write the data in
2592 * @start - where the actual data has been written in page
2593 * @offset - same meaning as the read system call
2594 * @count - same meaning as the read system call
2595 * @eof - set if no more data needs to be returned
2596 * @data - pointer to our soft state
2597 *
2598 * Display information about the physical drives on physical channel 1.
2599 */
2600 static int
2601 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2602 void *data)
2603 {
2604 adapter_t *adapter = (adapter_t *)data;
2605
2606 *eof = 1;
2607
2608 return (proc_pdrv(adapter, page, 1));
2609 }
2610
2611
2612 /**
2613 * proc_pdrv_ch2()
2614 * @page - buffer to write the data in
2615 * @start - where the actual data has been written in page
2616 * @offset - same meaning as the read system call
2617 * @count - same meaning as the read system call
2618 * @eof - set if no more data needs to be returned
2619 * @data - pointer to our soft state
2620 *
2621 * Display information about the physical drives on physical channel 2.
2622 */
2623 static int
2624 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2625 void *data)
2626 {
2627 adapter_t *adapter = (adapter_t *)data;
2628
2629 *eof = 1;
2630
2631 return (proc_pdrv(adapter, page, 2));
2632 }
2633
2634
2635 /**
2636 * proc_pdrv_ch3()
2637 * @page - buffer to write the data in
2638 * @start - where the actual data has been written in page
2639 * @offset - same meaning as the read system call
2640 * @count - same meaning as the read system call
2641 * @eof - set if no more data needs to be returned
2642 * @data - pointer to our soft state
2643 *
2644 * Display information about the physical drives on physical channel 3.
2645 */
2646 static int
2647 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2648 void *data)
2649 {
2650 adapter_t *adapter = (adapter_t *)data;
2651
2652 *eof = 1;
2653
2654 return (proc_pdrv(adapter, page, 3));
2655 }
2656
2657
2658 /**
2659 * proc_pdrv()
2660 * @page - buffer to write the data in
2661 * @adapter - pointer to our soft state
2662 *
2663 * Display information about the physical drives.
2664 */
2665 static int
2666 proc_pdrv(adapter_t *adapter, char *page, int channel)
2667 {
2668 dma_addr_t dma_handle;
2669 char *scsi_inq;
2670 dma_addr_t scsi_inq_dma_handle;
2671 caddr_t inquiry;
2672 struct pci_dev *pdev;
2673 u8 *pdrv_state;
2674 u8 state;
2675 int tgt;
2676 int max_channels;
2677 int len = 0;
2678 char str[80];
2679 int i;
2680
2681 if( make_local_pdev(adapter, &pdev) != 0 ) {
2682 return len;
2683 }
2684
2685 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2686 goto free_pdev;
2687 }
2688
2689 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2690 len = sprintf(page, "Adapter inquiry failed.\n");
2691
2692 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2693
2694 goto free_inquiry;
2695 }
2696
2697
2698 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2699
2700 if( scsi_inq == NULL ) {
2701 len = sprintf(page, "memory not available for scsi inq.\n");
2702
2703 goto free_inquiry;
2704 }
2705
2706 if( adapter->flag & BOARD_40LD ) {
2707 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2708 }
2709 else {
2710 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2711 raid_inq.pdrv_info.pdrv_state;
2712 }
2713
2714 max_channels = adapter->product_info.nchannels;
2715
2716 if( channel >= max_channels ) {
2717 goto free_pci;
2718 }
2719
2720 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2721
2722 i = channel*16 + tgt;
2723
2724 state = *(pdrv_state + i);
2725
2726 switch( state & 0x0F ) {
2727
2728 case PDRV_ONLINE:
2729 sprintf(str,
2730 "Channel:%2d Id:%2d State: Online",
2731 channel, tgt);
2732 break;
2733
2734 case PDRV_FAILED:
2735 sprintf(str,
2736 "Channel:%2d Id:%2d State: Failed",
2737 channel, tgt);
2738 break;
2739
2740 case PDRV_RBLD:
2741 sprintf(str,
2742 "Channel:%2d Id:%2d State: Rebuild",
2743 channel, tgt);
2744 break;
2745
2746 case PDRV_HOTSPARE:
2747 sprintf(str,
2748 "Channel:%2d Id:%2d State: Hot spare",
2749 channel, tgt);
2750 break;
2751
2752 default:
2753 sprintf(str,
2754 "Channel:%2d Id:%2d State: Un-configured",
2755 channel, tgt);
2756 break;
2757
2758 }
2759
2760 /*
2761 * This interface displays inquiries for disk drives
2762 * only. Inquries for logical drives and non-disk
2763 * devices are available through /proc/scsi/scsi
2764 */
2765 memset(scsi_inq, 0, 256);
2766 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2767 scsi_inq_dma_handle) ||
2768 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2769 continue;
2770 }
2771
2772 /*
2773 * Check for overflow. We print less than 240
2774 * characters for inquiry
2775 */
2776 if( (len + 240) >= PAGE_SIZE ) break;
2777
2778 len += sprintf(page+len, "%s.\n", str);
2779
2780 len += mega_print_inquiry(page+len, scsi_inq);
2781 }
2782
2783 free_pci:
2784 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2785 free_inquiry:
2786 mega_free_inquiry(inquiry, dma_handle, pdev);
2787 free_pdev:
2788 free_local_pdev(pdev);
2789
2790 return len;
2791 }
2792
2793
2794 /*
2795 * Display scsi inquiry
2796 */
2797 static int
2798 mega_print_inquiry(char *page, char *scsi_inq)
2799 {
2800 int len = 0;
2801 int i;
2802
2803 len = sprintf(page, " Vendor: ");
2804 for( i = 8; i < 16; i++ ) {
2805 len += sprintf(page+len, "%c", scsi_inq[i]);
2806 }
2807
2808 len += sprintf(page+len, " Model: ");
2809
2810 for( i = 16; i < 32; i++ ) {
2811 len += sprintf(page+len, "%c", scsi_inq[i]);
2812 }
2813
2814 len += sprintf(page+len, " Rev: ");
2815
2816 for( i = 32; i < 36; i++ ) {
2817 len += sprintf(page+len, "%c", scsi_inq[i]);
2818 }
2819
2820 len += sprintf(page+len, "\n");
2821
2822 i = scsi_inq[0] & 0x1f;
2823
2824 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2825
2826 len += sprintf(page+len,
2827 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2828
2829 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2830 len += sprintf(page+len, " CCS\n");
2831 else
2832 len += sprintf(page+len, "\n");
2833
2834 return len;
2835 }
2836
2837
2838 /**
2839 * proc_rdrv_10()
2840 * @page - buffer to write the data in
2841 * @start - where the actual data has been written in page
2842 * @offset - same meaning as the read system call
2843 * @count - same meaning as the read system call
2844 * @eof - set if no more data needs to be returned
2845 * @data - pointer to our soft state
2846 *
2847 * Display real time information about the logical drives 0 through 9.
2848 */
2849 static int
2850 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2851 void *data)
2852 {
2853 adapter_t *adapter = (adapter_t *)data;
2854
2855 *eof = 1;
2856
2857 return (proc_rdrv(adapter, page, 0, 9));
2858 }
2859
2860
2861 /**
2862 * proc_rdrv_20()
2863 * @page - buffer to write the data in
2864 * @start - where the actual data has been written in page
2865 * @offset - same meaning as the read system call
2866 * @count - same meaning as the read system call
2867 * @eof - set if no more data needs to be returned
2868 * @data - pointer to our soft state
2869 *
2870 * Display real time information about the logical drives 0 through 9.
2871 */
2872 static int
2873 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2874 void *data)
2875 {
2876 adapter_t *adapter = (adapter_t *)data;
2877
2878 *eof = 1;
2879
2880 return (proc_rdrv(adapter, page, 10, 19));
2881 }
2882
2883
2884 /**
2885 * proc_rdrv_30()
2886 * @page - buffer to write the data in
2887 * @start - where the actual data has been written in page
2888 * @offset - same meaning as the read system call
2889 * @count - same meaning as the read system call
2890 * @eof - set if no more data needs to be returned
2891 * @data - pointer to our soft state
2892 *
2893 * Display real time information about the logical drives 0 through 9.
2894 */
2895 static int
2896 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2897 void *data)
2898 {
2899 adapter_t *adapter = (adapter_t *)data;
2900
2901 *eof = 1;
2902
2903 return (proc_rdrv(adapter, page, 20, 29));
2904 }
2905
2906
2907 /**
2908 * proc_rdrv_40()
2909 * @page - buffer to write the data in
2910 * @start - where the actual data has been written in page
2911 * @offset - same meaning as the read system call
2912 * @count - same meaning as the read system call
2913 * @eof - set if no more data needs to be returned
2914 * @data - pointer to our soft state
2915 *
2916 * Display real time information about the logical drives 0 through 9.
2917 */
2918 static int
2919 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2920 void *data)
2921 {
2922 adapter_t *adapter = (adapter_t *)data;
2923
2924 *eof = 1;
2925
2926 return (proc_rdrv(adapter, page, 30, 39));
2927 }
2928
2929
2930 /**
2931 * proc_rdrv()
2932 * @page - buffer to write the data in
2933 * @adapter - pointer to our soft state
2934 * @start - starting logical drive to display
2935 * @end - ending logical drive to display
2936 *
2937 * We do not print the inquiry information since its already available through
2938 * /proc/scsi/scsi interface
2939 */
2940 static int
2941 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2942 {
2943 dma_addr_t dma_handle;
2944 logdrv_param *lparam;
2945 megacmd_t mc;
2946 char *disk_array;
2947 dma_addr_t disk_array_dma_handle;
2948 caddr_t inquiry;
2949 struct pci_dev *pdev;
2950 u8 *rdrv_state;
2951 int num_ldrv;
2952 u32 array_sz;
2953 int len = 0;
2954 int i;
2955
2956 if( make_local_pdev(adapter, &pdev) != 0 ) {
2957 return len;
2958 }
2959
2960 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2961 free_local_pdev(pdev);
2962 return len;
2963 }
2964
2965 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2966
2967 len = sprintf(page, "Adapter inquiry failed.\n");
2968
2969 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2970
2971 mega_free_inquiry(inquiry, dma_handle, pdev);
2972
2973 free_local_pdev(pdev);
2974
2975 return len;
2976 }
2977
2978 memset(&mc, 0, sizeof(megacmd_t));
2979
2980 if( adapter->flag & BOARD_40LD ) {
2981 array_sz = sizeof(disk_array_40ld);
2982
2983 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2984
2985 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2986 }
2987 else {
2988 array_sz = sizeof(disk_array_8ld);
2989
2990 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2991 raid_inq.logdrv_info.ldrv_state;
2992
2993 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2994 raid_inq.logdrv_info.num_ldrv;
2995 }
2996
2997 disk_array = pci_alloc_consistent(pdev, array_sz,
2998 &disk_array_dma_handle);
2999
3000 if( disk_array == NULL ) {
3001 len = sprintf(page, "memory not available.\n");
3002
3003 mega_free_inquiry(inquiry, dma_handle, pdev);
3004
3005 free_local_pdev(pdev);
3006
3007 return len;
3008 }
3009
3010 mc.xferaddr = (u32)disk_array_dma_handle;
3011
3012 if( adapter->flag & BOARD_40LD ) {
3013 mc.cmd = FC_NEW_CONFIG;
3014 mc.opcode = OP_DCMD_READ_CONFIG;
3015
3016 if( mega_internal_command(adapter, &mc, NULL) ) {
3017
3018 len = sprintf(page, "40LD read config failed.\n");
3019
3020 mega_free_inquiry(inquiry, dma_handle, pdev);
3021
3022 pci_free_consistent(pdev, array_sz, disk_array,
3023 disk_array_dma_handle);
3024
3025 free_local_pdev(pdev);
3026
3027 return len;
3028 }
3029
3030 }
3031 else {
3032 mc.cmd = NEW_READ_CONFIG_8LD;
3033
3034 if( mega_internal_command(adapter, &mc, NULL) ) {
3035
3036 mc.cmd = READ_CONFIG_8LD;
3037
3038 if( mega_internal_command(adapter, &mc,
3039 NULL) ){
3040
3041 len = sprintf(page,
3042 "8LD read config failed.\n");
3043
3044 mega_free_inquiry(inquiry, dma_handle, pdev);
3045
3046 pci_free_consistent(pdev, array_sz,
3047 disk_array,
3048 disk_array_dma_handle);
3049
3050 free_local_pdev(pdev);
3051
3052 return len;
3053 }
3054 }
3055 }
3056
3057 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3058
3059 if( adapter->flag & BOARD_40LD ) {
3060 lparam =
3061 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3062 }
3063 else {
3064 lparam =
3065 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3066 }
3067
3068 /*
3069 * Check for overflow. We print less than 240 characters for
3070 * information about each logical drive.
3071 */
3072 if( (len + 240) >= PAGE_SIZE ) break;
3073
3074 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3075
3076 switch( rdrv_state[i] & 0x0F ) {
3077 case RDRV_OFFLINE:
3078 len += sprintf(page+len, "state: offline");
3079 break;
3080
3081 case RDRV_DEGRADED:
3082 len += sprintf(page+len, "state: degraded");
3083 break;
3084
3085 case RDRV_OPTIMAL:
3086 len += sprintf(page+len, "state: optimal");
3087 break;
3088
3089 case RDRV_DELETED:
3090 len += sprintf(page+len, "state: deleted");
3091 break;
3092
3093 default:
3094 len += sprintf(page+len, "state: unknown");
3095 break;
3096 }
3097
3098 /*
3099 * Check if check consistency or initialization is going on
3100 * for this logical drive.
3101 */
3102 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3103 len += sprintf(page+len,
3104 ", check-consistency in progress");
3105 }
3106 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3107 len += sprintf(page+len,
3108 ", initialization in progress");
3109 }
3110
3111 len += sprintf(page+len, "\n");
3112
3113 len += sprintf(page+len, "Span depth:%3d, ",
3114 lparam->span_depth);
3115
3116 len += sprintf(page+len, "RAID level:%3d, ",
3117 lparam->level);
3118
3119 len += sprintf(page+len, "Stripe size:%3d, ",
3120 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3121
3122 len += sprintf(page+len, "Row size:%3d\n",
3123 lparam->row_size);
3124
3125
3126 len += sprintf(page+len, "Read Policy: ");
3127
3128 switch(lparam->read_ahead) {
3129
3130 case NO_READ_AHEAD:
3131 len += sprintf(page+len, "No read ahead, ");
3132 break;
3133
3134 case READ_AHEAD:
3135 len += sprintf(page+len, "Read ahead, ");
3136 break;
3137
3138 case ADAP_READ_AHEAD:
3139 len += sprintf(page+len, "Adaptive, ");
3140 break;
3141
3142 }
3143
3144 len += sprintf(page+len, "Write Policy: ");
3145
3146 switch(lparam->write_mode) {
3147
3148 case WRMODE_WRITE_THRU:
3149 len += sprintf(page+len, "Write thru, ");
3150 break;
3151
3152 case WRMODE_WRITE_BACK:
3153 len += sprintf(page+len, "Write back, ");
3154 break;
3155 }
3156
3157 len += sprintf(page+len, "Cache Policy: ");
3158
3159 switch(lparam->direct_io) {
3160
3161 case CACHED_IO:
3162 len += sprintf(page+len, "Cached IO\n\n");
3163 break;
3164
3165 case DIRECT_IO:
3166 len += sprintf(page+len, "Direct IO\n\n");
3167 break;
3168 }
3169 }
3170
3171 mega_free_inquiry(inquiry, dma_handle, pdev);
3172
3173 pci_free_consistent(pdev, array_sz, disk_array,
3174 disk_array_dma_handle);
3175
3176 free_local_pdev(pdev);
3177
3178 return len;
3179 }
3180
3181 #endif
3182
3183
3184 /**
3185 * megaraid_biosparam()
3186 *
3187 * Return the disk geometry for a particular disk
3188 */
3189 static int
3190 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3191 sector_t capacity, int geom[])
3192 {
3193 adapter_t *adapter;
3194 unsigned char *bh;
3195 int heads;
3196 int sectors;
3197 int cylinders;
3198 int rval;
3199
3200 /* Get pointer to host config structure */
3201 adapter = (adapter_t *)sdev->host->hostdata;
3202
3203 if (IS_RAID_CH(adapter, sdev->channel)) {
3204 /* Default heads (64) & sectors (32) */
3205 heads = 64;
3206 sectors = 32;
3207 cylinders = (ulong)capacity / (heads * sectors);
3208
3209 /*
3210 * Handle extended translation size for logical drives
3211 * > 1Gb
3212 */
3213 if ((ulong)capacity >= 0x200000) {
3214 heads = 255;
3215 sectors = 63;
3216 cylinders = (ulong)capacity / (heads * sectors);
3217 }
3218
3219 /* return result */
3220 geom[0] = heads;
3221 geom[1] = sectors;
3222 geom[2] = cylinders;
3223 }
3224 else {
3225 bh = scsi_bios_ptable(bdev);
3226
3227 if( bh ) {
3228 rval = scsi_partsize(bh, capacity,
3229 &geom[2], &geom[0], &geom[1]);
3230 kfree(bh);
3231 if( rval != -1 )
3232 return rval;
3233 }
3234
3235 printk(KERN_INFO
3236 "megaraid: invalid partition on this disk on channel %d\n",
3237 sdev->channel);
3238
3239 /* Default heads (64) & sectors (32) */
3240 heads = 64;
3241 sectors = 32;
3242 cylinders = (ulong)capacity / (heads * sectors);
3243
3244 /* Handle extended translation size for logical drives > 1Gb */
3245 if ((ulong)capacity >= 0x200000) {
3246 heads = 255;
3247 sectors = 63;
3248 cylinders = (ulong)capacity / (heads * sectors);
3249 }
3250
3251 /* return result */
3252 geom[0] = heads;
3253 geom[1] = sectors;
3254 geom[2] = cylinders;
3255 }
3256
3257 return 0;
3258 }
3259
3260 /**
3261 * mega_init_scb()
3262 * @adapter - pointer to our soft state
3263 *
3264 * Allocate memory for the various pointers in the scb structures:
3265 * scatter-gather list pointer, passthru and extended passthru structure
3266 * pointers.
3267 */
3268 static int
3269 mega_init_scb(adapter_t *adapter)
3270 {
3271 scb_t *scb;
3272 int i;
3273
3274 for( i = 0; i < adapter->max_cmds; i++ ) {
3275
3276 scb = &adapter->scb_list[i];
3277
3278 scb->sgl64 = NULL;
3279 scb->sgl = NULL;
3280 scb->pthru = NULL;
3281 scb->epthru = NULL;
3282 }
3283
3284 for( i = 0; i < adapter->max_cmds; i++ ) {
3285
3286 scb = &adapter->scb_list[i];
3287
3288 scb->idx = i;
3289
3290 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3291 sizeof(mega_sgl64) * adapter->sglen,
3292 &scb->sgl_dma_addr);
3293
3294 scb->sgl = (mega_sglist *)scb->sgl64;
3295
3296 if( !scb->sgl ) {
3297 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3298 mega_free_sgl(adapter);
3299 return -1;
3300 }
3301
3302 scb->pthru = pci_alloc_consistent(adapter->dev,
3303 sizeof(mega_passthru),
3304 &scb->pthru_dma_addr);
3305
3306 if( !scb->pthru ) {
3307 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3308 mega_free_sgl(adapter);
3309 return -1;
3310 }
3311
3312 scb->epthru = pci_alloc_consistent(adapter->dev,
3313 sizeof(mega_ext_passthru),
3314 &scb->epthru_dma_addr);
3315
3316 if( !scb->epthru ) {
3317 printk(KERN_WARNING
3318 "Can't allocate extended passthru.\n");
3319 mega_free_sgl(adapter);
3320 return -1;
3321 }
3322
3323
3324 scb->dma_type = MEGA_DMA_TYPE_NONE;
3325
3326 /*
3327 * Link to free list
3328 * lock not required since we are loading the driver, so no
3329 * commands possible right now.
3330 */
3331 scb->state = SCB_FREE;
3332 scb->cmd = NULL;
3333 list_add(&scb->list, &adapter->free_list);
3334 }
3335
3336 return 0;
3337 }
3338
3339
3340 /**
3341 * megadev_open()
3342 * @inode - unused
3343 * @filep - unused
3344 *
3345 * Routines for the character/ioctl interface to the driver. Find out if this
3346 * is a valid open. If yes, increment the module use count so that it cannot
3347 * be unloaded.
3348 */
3349 static int
3350 megadev_open (struct inode *inode, struct file *filep)
3351 {
3352 /*
3353 * Only allow superuser to access private ioctl interface
3354 */
3355 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3356
3357 return 0;
3358 }
3359
3360
3361 /**
3362 * megadev_ioctl()
3363 * @inode - Our device inode
3364 * @filep - unused
3365 * @cmd - ioctl command
3366 * @arg - user buffer
3367 *
3368 * ioctl entry point for our private ioctl interface. We move the data in from
3369 * the user space, prepare the command (if necessary, convert the old MIMD
3370 * ioctl to new ioctl command), and issue a synchronous command to the
3371 * controller.
3372 */
3373 static int
3374 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3375 unsigned long arg)
3376 {
3377 adapter_t *adapter;
3378 nitioctl_t uioc;
3379 int adapno;
3380 int rval;
3381 mega_passthru __user *upthru; /* user address for passthru */
3382 mega_passthru *pthru; /* copy user passthru here */
3383 dma_addr_t pthru_dma_hndl;
3384 void *data = NULL; /* data to be transferred */
3385 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3386 megacmd_t mc;
3387 megastat_t __user *ustats;
3388 int num_ldrv;
3389 u32 uxferaddr = 0;
3390 struct pci_dev *pdev;
3391
3392 ustats = NULL; /* avoid compilation warnings */
3393 num_ldrv = 0;
3394
3395 /*
3396 * Make sure only USCSICMD are issued through this interface.
3397 * MIMD application would still fire different command.
3398 */
3399 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3400 return -EINVAL;
3401 }
3402
3403 /*
3404 * Check and convert a possible MIMD command to NIT command.
3405 * mega_m_to_n() copies the data from the user space, so we do not
3406 * have to do it here.
3407 * NOTE: We will need some user address to copyout the data, therefore
3408 * the inteface layer will also provide us with the required user
3409 * addresses.
3410 */
3411 memset(&uioc, 0, sizeof(nitioctl_t));
3412 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3413 return rval;
3414
3415
3416 switch( uioc.opcode ) {
3417
3418 case GET_DRIVER_VER:
3419 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3420 return (-EFAULT);
3421
3422 break;
3423
3424 case GET_N_ADAP:
3425 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3426 return (-EFAULT);
3427
3428 /*
3429 * Shucks. MIMD interface returns a positive value for number
3430 * of adapters. TODO: Change it to return 0 when there is no
3431 * applicatio using mimd interface.
3432 */
3433 return hba_count;
3434
3435 case GET_ADAP_INFO:
3436
3437 /*
3438 * Which adapter
3439 */
3440 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3441 return (-ENODEV);
3442
3443 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3444 sizeof(struct mcontroller)) )
3445 return (-EFAULT);
3446 break;
3447
3448 #if MEGA_HAVE_STATS
3449
3450 case GET_STATS:
3451 /*
3452 * Which adapter
3453 */
3454 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3455 return (-ENODEV);
3456
3457 adapter = hba_soft_state[adapno];
3458
3459 ustats = uioc.uioc_uaddr;
3460
3461 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3462 return (-EFAULT);
3463
3464 /*
3465 * Check for the validity of the logical drive number
3466 */
3467 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3468
3469 if( copy_to_user(ustats->nreads, adapter->nreads,
3470 num_ldrv*sizeof(u32)) )
3471 return -EFAULT;
3472
3473 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3474 num_ldrv*sizeof(u32)) )
3475 return -EFAULT;
3476
3477 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3478 num_ldrv*sizeof(u32)) )
3479 return -EFAULT;
3480
3481 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3482 num_ldrv*sizeof(u32)) )
3483 return -EFAULT;
3484
3485 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3486 num_ldrv*sizeof(u32)) )
3487 return -EFAULT;
3488
3489 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3490 num_ldrv*sizeof(u32)) )
3491 return -EFAULT;
3492
3493 return 0;
3494
3495 #endif
3496 case MBOX_CMD:
3497
3498 /*
3499 * Which adapter
3500 */
3501 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3502 return (-ENODEV);
3503
3504 adapter = hba_soft_state[adapno];
3505
3506 /*
3507 * Deletion of logical drive is a special case. The adapter
3508 * should be quiescent before this command is issued.
3509 */
3510 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3511 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3512
3513 /*
3514 * Do we support this feature
3515 */
3516 if( !adapter->support_random_del ) {
3517 printk(KERN_WARNING "megaraid: logdrv ");
3518 printk("delete on non-supporting F/W.\n");
3519
3520 return (-EINVAL);
3521 }
3522
3523 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3524
3525 if( rval == 0 ) {
3526 memset(&mc, 0, sizeof(megacmd_t));
3527
3528 mc.status = rval;
3529
3530 rval = mega_n_to_m((void __user *)arg, &mc);
3531 }
3532
3533 return rval;
3534 }
3535 /*
3536 * This interface only support the regular passthru commands.
3537 * Reject extended passthru and 64-bit passthru
3538 */
3539 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3540 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3541
3542 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3543
3544 return (-EINVAL);
3545 }
3546
3547 /*
3548 * For all internal commands, the buffer must be allocated in
3549 * <4GB address range
3550 */
3551 if( make_local_pdev(adapter, &pdev) != 0 )
3552 return -EIO;
3553
3554 /* Is it a passthru command or a DCMD */
3555 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3556 /* Passthru commands */
3557
3558 pthru = pci_alloc_consistent(pdev,
3559 sizeof(mega_passthru),
3560 &pthru_dma_hndl);
3561
3562 if( pthru == NULL ) {
3563 free_local_pdev(pdev);
3564 return (-ENOMEM);
3565 }
3566
3567 /*
3568 * The user passthru structure
3569 */
3570 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3571
3572 /*
3573 * Copy in the user passthru here.
3574 */
3575 if( copy_from_user(pthru, upthru,
3576 sizeof(mega_passthru)) ) {
3577
3578 pci_free_consistent(pdev,
3579 sizeof(mega_passthru), pthru,
3580 pthru_dma_hndl);
3581
3582 free_local_pdev(pdev);
3583
3584 return (-EFAULT);
3585 }
3586
3587 /*
3588 * Is there a data transfer
3589 */
3590 if( pthru->dataxferlen ) {
3591 data = pci_alloc_consistent(pdev,
3592 pthru->dataxferlen,
3593 &data_dma_hndl);
3594
3595 if( data == NULL ) {
3596 pci_free_consistent(pdev,
3597 sizeof(mega_passthru),
3598 pthru,
3599 pthru_dma_hndl);
3600
3601 free_local_pdev(pdev);
3602
3603 return (-ENOMEM);
3604 }
3605
3606 /*
3607 * Save the user address and point the kernel
3608 * address at just allocated memory
3609 */
3610 uxferaddr = pthru->dataxferaddr;
3611 pthru->dataxferaddr = data_dma_hndl;
3612 }
3613
3614
3615 /*
3616 * Is data coming down-stream
3617 */
3618 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3619 /*
3620 * Get the user data
3621 */
3622 if( copy_from_user(data, (char __user *)uxferaddr,
3623 pthru->dataxferlen) ) {
3624 rval = (-EFAULT);
3625 goto freemem_and_return;
3626 }
3627 }
3628
3629 memset(&mc, 0, sizeof(megacmd_t));
3630
3631 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3632 mc.xferaddr = (u32)pthru_dma_hndl;
3633
3634 /*
3635 * Issue the command
3636 */
3637 mega_internal_command(adapter, &mc, pthru);
3638
3639 rval = mega_n_to_m((void __user *)arg, &mc);
3640
3641 if( rval ) goto freemem_and_return;
3642
3643
3644 /*
3645 * Is data going up-stream
3646 */
3647 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3648 if( copy_to_user((char __user *)uxferaddr, data,
3649 pthru->dataxferlen) ) {
3650 rval = (-EFAULT);
3651 }
3652 }
3653
3654 /*
3655 * Send the request sense data also, irrespective of
3656 * whether the user has asked for it or not.
3657 */
3658 if (copy_to_user(upthru->reqsensearea,
3659 pthru->reqsensearea, 14))
3660 rval = -EFAULT;
3661
3662 freemem_and_return:
3663 if( pthru->dataxferlen ) {
3664 pci_free_consistent(pdev,
3665 pthru->dataxferlen, data,
3666 data_dma_hndl);
3667 }
3668
3669 pci_free_consistent(pdev, sizeof(mega_passthru),
3670 pthru, pthru_dma_hndl);
3671
3672 free_local_pdev(pdev);
3673
3674 return rval;
3675 }
3676 else {
3677 /* DCMD commands */
3678
3679 /*
3680 * Is there a data transfer
3681 */
3682 if( uioc.xferlen ) {
3683 data = pci_alloc_consistent(pdev,
3684 uioc.xferlen, &data_dma_hndl);
3685
3686 if( data == NULL ) {
3687 free_local_pdev(pdev);
3688 return (-ENOMEM);
3689 }
3690
3691 uxferaddr = MBOX(uioc)->xferaddr;
3692 }
3693
3694 /*
3695 * Is data coming down-stream
3696 */
3697 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3698 /*
3699 * Get the user data
3700 */
3701 if( copy_from_user(data, (char __user *)uxferaddr,
3702 uioc.xferlen) ) {
3703
3704 pci_free_consistent(pdev,
3705 uioc.xferlen,
3706 data, data_dma_hndl);
3707
3708 free_local_pdev(pdev);
3709
3710 return (-EFAULT);
3711 }
3712 }
3713
3714 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3715
3716 mc.xferaddr = (u32)data_dma_hndl;
3717
3718 /*
3719 * Issue the command
3720 */
3721 mega_internal_command(adapter, &mc, NULL);
3722
3723 rval = mega_n_to_m((void __user *)arg, &mc);
3724
3725 if( rval ) {
3726 if( uioc.xferlen ) {
3727 pci_free_consistent(pdev,
3728 uioc.xferlen, data,
3729 data_dma_hndl);
3730 }
3731
3732 free_local_pdev(pdev);
3733
3734 return rval;
3735 }
3736
3737 /*
3738 * Is data going up-stream
3739 */
3740 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3741 if( copy_to_user((char __user *)uxferaddr, data,
3742 uioc.xferlen) ) {
3743
3744 rval = (-EFAULT);
3745 }
3746 }
3747
3748 if( uioc.xferlen ) {
3749 pci_free_consistent(pdev,
3750 uioc.xferlen, data,
3751 data_dma_hndl);
3752 }
3753
3754 free_local_pdev(pdev);
3755
3756 return rval;
3757 }
3758
3759 default:
3760 return (-EINVAL);
3761 }
3762
3763 return 0;
3764 }
3765
3766 /**
3767 * mega_m_to_n()
3768 * @arg - user address
3769 * @uioc - new ioctl structure
3770 *
3771 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3772 * structure
3773 *
3774 * Converts the older mimd ioctl structure to newer NIT structure
3775 */
3776 static int
3777 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3778 {
3779 struct uioctl_t uioc_mimd;
3780 char signature[8] = {0};
3781 u8 opcode;
3782 u8 subopcode;
3783
3784
3785 /*
3786 * check is the application conforms to NIT. We do not have to do much
3787 * in that case.
3788 * We exploit the fact that the signature is stored in the very
3789 * begining of the structure.
3790 */
3791
3792 if( copy_from_user(signature, arg, 7) )
3793 return (-EFAULT);
3794
3795 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3796
3797 /*
3798 * NOTE NOTE: The nit ioctl is still under flux because of
3799 * change of mailbox definition, in HPE. No applications yet
3800 * use this interface and let's not have applications use this
3801 * interface till the new specifitions are in place.
3802 */
3803 return -EINVAL;
3804 #if 0
3805 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3806 return (-EFAULT);
3807 return 0;
3808 #endif
3809 }
3810
3811 /*
3812 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3813 *
3814 * Get the user ioctl structure
3815 */
3816 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3817 return (-EFAULT);
3818
3819
3820 /*
3821 * Get the opcode and subopcode for the commands
3822 */
3823 opcode = uioc_mimd.ui.fcs.opcode;
3824 subopcode = uioc_mimd.ui.fcs.subopcode;
3825
3826 switch (opcode) {
3827 case 0x82:
3828
3829 switch (subopcode) {
3830
3831 case MEGAIOC_QDRVRVER: /* Query driver version */
3832 uioc->opcode = GET_DRIVER_VER;
3833 uioc->uioc_uaddr = uioc_mimd.data;
3834 break;
3835
3836 case MEGAIOC_QNADAP: /* Get # of adapters */
3837 uioc->opcode = GET_N_ADAP;
3838 uioc->uioc_uaddr = uioc_mimd.data;
3839 break;
3840
3841 case MEGAIOC_QADAPINFO: /* Get adapter information */
3842 uioc->opcode = GET_ADAP_INFO;
3843 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3844 uioc->uioc_uaddr = uioc_mimd.data;
3845 break;
3846
3847 default:
3848 return(-EINVAL);
3849 }
3850
3851 break;
3852
3853
3854 case 0x81:
3855
3856 uioc->opcode = MBOX_CMD;
3857 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3858
3859 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3860
3861 uioc->xferlen = uioc_mimd.ui.fcs.length;
3862
3863 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3864 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3865
3866 break;
3867
3868 case 0x80:
3869
3870 uioc->opcode = MBOX_CMD;
3871 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3872
3873 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3874
3875 /*
3876 * Choose the xferlen bigger of input and output data
3877 */
3878 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3879 uioc_mimd.outlen : uioc_mimd.inlen;
3880
3881 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3882 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3883
3884 break;
3885
3886 default:
3887 return (-EINVAL);
3888
3889 }
3890
3891 return 0;
3892 }
3893
3894 /*
3895 * mega_n_to_m()
3896 * @arg - user address
3897 * @mc - mailbox command
3898 *
3899 * Updates the status information to the application, depending on application
3900 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3901 */
3902 static int
3903 mega_n_to_m(void __user *arg, megacmd_t *mc)
3904 {
3905 nitioctl_t __user *uiocp;
3906 megacmd_t __user *umc;
3907 mega_passthru __user *upthru;
3908 struct uioctl_t __user *uioc_mimd;
3909 char signature[8] = {0};
3910
3911 /*
3912 * check is the application conforms to NIT.
3913 */
3914 if( copy_from_user(signature, arg, 7) )
3915 return -EFAULT;
3916
3917 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3918
3919 uiocp = arg;
3920
3921 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3922 return (-EFAULT);
3923
3924 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3925
3926 umc = MBOX_P(uiocp);
3927
3928 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3929 return -EFAULT;
3930
3931 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3932 return (-EFAULT);
3933 }
3934 }
3935 else {
3936 uioc_mimd = arg;
3937
3938 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3939 return (-EFAULT);
3940
3941 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3942
3943 umc = (megacmd_t __user *)uioc_mimd->mbox;
3944
3945 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3946 return (-EFAULT);
3947
3948 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3949 return (-EFAULT);
3950 }
3951 }
3952
3953 return 0;
3954 }
3955
3956
3957 /*
3958 * MEGARAID 'FW' commands.
3959 */
3960
3961 /**
3962 * mega_is_bios_enabled()
3963 * @adapter - pointer to our soft state
3964 *
3965 * issue command to find out if the BIOS is enabled for this controller
3966 */
3967 static int
3968 mega_is_bios_enabled(adapter_t *adapter)
3969 {
3970 unsigned char raw_mbox[sizeof(struct mbox_out)];
3971 mbox_t *mbox;
3972 int ret;
3973
3974 mbox = (mbox_t *)raw_mbox;
3975
3976 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3977
3978 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3979
3980 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3981
3982 raw_mbox[0] = IS_BIOS_ENABLED;
3983 raw_mbox[2] = GET_BIOS;
3984
3985
3986 ret = issue_scb_block(adapter, raw_mbox);
3987
3988 return *(char *)adapter->mega_buffer;
3989 }
3990
3991
3992 /**
3993 * mega_enum_raid_scsi()
3994 * @adapter - pointer to our soft state
3995 *
3996 * Find out what channels are RAID/SCSI. This information is used to
3997 * differentiate the virtual channels and physical channels and to support
3998 * ROMB feature and non-disk devices.
3999 */
4000 static void
4001 mega_enum_raid_scsi(adapter_t *adapter)
4002 {
4003 unsigned char raw_mbox[sizeof(struct mbox_out)];
4004 mbox_t *mbox;
4005 int i;
4006
4007 mbox = (mbox_t *)raw_mbox;
4008
4009 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4010
4011 /*
4012 * issue command to find out what channels are raid/scsi
4013 */
4014 raw_mbox[0] = CHNL_CLASS;
4015 raw_mbox[2] = GET_CHNL_CLASS;
4016
4017 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4018
4019 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4020
4021 /*
4022 * Non-ROMB firmware fail this command, so all channels
4023 * must be shown RAID
4024 */
4025 adapter->mega_ch_class = 0xFF;
4026
4027 if(!issue_scb_block(adapter, raw_mbox)) {
4028 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4029
4030 }
4031
4032 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4033 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4034 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4035 i);
4036 }
4037 else {
4038 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4039 i);
4040 }
4041 }
4042
4043 return;
4044 }
4045
4046
4047 /**
4048 * mega_get_boot_drv()
4049 * @adapter - pointer to our soft state
4050 *
4051 * Find out which device is the boot device. Note, any logical drive or any
4052 * phyical device (e.g., a CDROM) can be designated as a boot device.
4053 */
4054 static void
4055 mega_get_boot_drv(adapter_t *adapter)
4056 {
4057 struct private_bios_data *prv_bios_data;
4058 unsigned char raw_mbox[sizeof(struct mbox_out)];
4059 mbox_t *mbox;
4060 u16 cksum = 0;
4061 u8 *cksum_p;
4062 u8 boot_pdrv;
4063 int i;
4064
4065 mbox = (mbox_t *)raw_mbox;
4066
4067 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4068
4069 raw_mbox[0] = BIOS_PVT_DATA;
4070 raw_mbox[2] = GET_BIOS_PVT_DATA;
4071
4072 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4073
4074 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4075
4076 adapter->boot_ldrv_enabled = 0;
4077 adapter->boot_ldrv = 0;
4078
4079 adapter->boot_pdrv_enabled = 0;
4080 adapter->boot_pdrv_ch = 0;
4081 adapter->boot_pdrv_tgt = 0;
4082
4083 if(issue_scb_block(adapter, raw_mbox) == 0) {
4084 prv_bios_data =
4085 (struct private_bios_data *)adapter->mega_buffer;
4086
4087 cksum = 0;
4088 cksum_p = (char *)prv_bios_data;
4089 for (i = 0; i < 14; i++ ) {
4090 cksum += (u16)(*cksum_p++);
4091 }
4092
4093 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4094
4095 /*
4096 * If MSB is set, a physical drive is set as boot
4097 * device
4098 */
4099 if( prv_bios_data->boot_drv & 0x80 ) {
4100 adapter->boot_pdrv_enabled = 1;
4101 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4102 adapter->boot_pdrv_ch = boot_pdrv / 16;
4103 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4104 }
4105 else {
4106 adapter->boot_ldrv_enabled = 1;
4107 adapter->boot_ldrv = prv_bios_data->boot_drv;
4108 }
4109 }
4110 }
4111
4112 }
4113
4114 /**
4115 * mega_support_random_del()
4116 * @adapter - pointer to our soft state
4117 *
4118 * Find out if this controller supports random deletion and addition of
4119 * logical drives
4120 */
4121 static int
4122 mega_support_random_del(adapter_t *adapter)
4123 {
4124 unsigned char raw_mbox[sizeof(struct mbox_out)];
4125 mbox_t *mbox;
4126 int rval;
4127
4128 mbox = (mbox_t *)raw_mbox;
4129
4130 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4131
4132 /*
4133 * issue command
4134 */
4135 raw_mbox[0] = FC_DEL_LOGDRV;
4136 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4137
4138 rval = issue_scb_block(adapter, raw_mbox);
4139
4140 return !rval;
4141 }
4142
4143
4144 /**
4145 * mega_support_ext_cdb()
4146 * @adapter - pointer to our soft state
4147 *
4148 * Find out if this firmware support cdblen > 10
4149 */
4150 static int
4151 mega_support_ext_cdb(adapter_t *adapter)
4152 {
4153 unsigned char raw_mbox[sizeof(struct mbox_out)];
4154 mbox_t *mbox;
4155 int rval;
4156
4157 mbox = (mbox_t *)raw_mbox;
4158
4159 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4160 /*
4161 * issue command to find out if controller supports extended CDBs.
4162 */
4163 raw_mbox[0] = 0xA4;
4164 raw_mbox[2] = 0x16;
4165
4166 rval = issue_scb_block(adapter, raw_mbox);
4167
4168 return !rval;
4169 }
4170
4171
4172 /**
4173 * mega_del_logdrv()
4174 * @adapter - pointer to our soft state
4175 * @logdrv - logical drive to be deleted
4176 *
4177 * Delete the specified logical drive. It is the responsibility of the user
4178 * app to let the OS know about this operation.
4179 */
4180 static int
4181 mega_del_logdrv(adapter_t *adapter, int logdrv)
4182 {
4183 unsigned long flags;
4184 scb_t *scb;
4185 int rval;
4186
4187 /*
4188 * Stop sending commands to the controller, queue them internally.
4189 * When deletion is complete, ISR will flush the queue.
4190 */
4191 atomic_set(&adapter->quiescent, 1);
4192
4193 /*
4194 * Wait till all the issued commands are complete and there are no
4195 * commands in the pending queue
4196 */
4197 while (atomic_read(&adapter->pend_cmds) > 0 ||
4198 !list_empty(&adapter->pending_list))
4199 msleep(1000); /* sleep for 1s */
4200
4201 rval = mega_do_del_logdrv(adapter, logdrv);
4202
4203 spin_lock_irqsave(&adapter->lock, flags);
4204
4205 /*
4206 * If delete operation was successful, add 0x80 to the logical drive
4207 * ids for commands in the pending queue.
4208 */
4209 if (adapter->read_ldidmap) {
4210 struct list_head *pos;
4211 list_for_each(pos, &adapter->pending_list) {
4212 scb = list_entry(pos, scb_t, list);
4213 if (scb->pthru->logdrv < 0x80 )
4214 scb->pthru->logdrv += 0x80;
4215 }
4216 }
4217
4218 atomic_set(&adapter->quiescent, 0);
4219
4220 mega_runpendq(adapter);
4221
4222 spin_unlock_irqrestore(&adapter->lock, flags);
4223
4224 return rval;
4225 }
4226
4227
4228 static int
4229 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4230 {
4231 megacmd_t mc;
4232 int rval;
4233
4234 memset( &mc, 0, sizeof(megacmd_t));
4235
4236 mc.cmd = FC_DEL_LOGDRV;
4237 mc.opcode = OP_DEL_LOGDRV;
4238 mc.subopcode = logdrv;
4239
4240 rval = mega_internal_command(adapter, &mc, NULL);
4241
4242 /* log this event */
4243 if(rval) {
4244 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4245 return rval;
4246 }
4247
4248 /*
4249 * After deleting first logical drive, the logical drives must be
4250 * addressed by adding 0x80 to the logical drive id.
4251 */
4252 adapter->read_ldidmap = 1;
4253
4254 return rval;
4255 }
4256
4257
4258 /**
4259 * mega_get_max_sgl()
4260 * @adapter - pointer to our soft state
4261 *
4262 * Find out the maximum number of scatter-gather elements supported by this
4263 * version of the firmware
4264 */
4265 static void
4266 mega_get_max_sgl(adapter_t *adapter)
4267 {
4268 unsigned char raw_mbox[sizeof(struct mbox_out)];
4269 mbox_t *mbox;
4270
4271 mbox = (mbox_t *)raw_mbox;
4272
4273 memset(mbox, 0, sizeof(raw_mbox));
4274
4275 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4276
4277 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4278
4279 raw_mbox[0] = MAIN_MISC_OPCODE;
4280 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4281
4282
4283 if( issue_scb_block(adapter, raw_mbox) ) {
4284 /*
4285 * f/w does not support this command. Choose the default value
4286 */
4287 adapter->sglen = MIN_SGLIST;
4288 }
4289 else {
4290 adapter->sglen = *((char *)adapter->mega_buffer);
4291
4292 /*
4293 * Make sure this is not more than the resources we are
4294 * planning to allocate
4295 */
4296 if ( adapter->sglen > MAX_SGLIST )
4297 adapter->sglen = MAX_SGLIST;
4298 }
4299
4300 return;
4301 }
4302
4303
4304 /**
4305 * mega_support_cluster()
4306 * @adapter - pointer to our soft state
4307 *
4308 * Find out if this firmware support cluster calls.
4309 */
4310 static int
4311 mega_support_cluster(adapter_t *adapter)
4312 {
4313 unsigned char raw_mbox[sizeof(struct mbox_out)];
4314 mbox_t *mbox;
4315
4316 mbox = (mbox_t *)raw_mbox;
4317
4318 memset(mbox, 0, sizeof(raw_mbox));
4319
4320 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4321
4322 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4323
4324 /*
4325 * Try to get the initiator id. This command will succeed iff the
4326 * clustering is available on this HBA.
4327 */
4328 raw_mbox[0] = MEGA_GET_TARGET_ID;
4329
4330 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4331
4332 /*
4333 * Cluster support available. Get the initiator target id.
4334 * Tell our id to mid-layer too.
4335 */
4336 adapter->this_id = *(u32 *)adapter->mega_buffer;
4337 adapter->host->this_id = adapter->this_id;
4338
4339 return 1;
4340 }
4341
4342 return 0;
4343 }
4344
4345
4346 /**
4347 * mega_adapinq()
4348 * @adapter - pointer to our soft state
4349 * @dma_handle - DMA address of the buffer
4350 *
4351 * Issue internal comamnds while interrupts are available.
4352 * We only issue direct mailbox commands from within the driver. ioctl()
4353 * interface using these routines can issue passthru commands.
4354 */
4355 static int
4356 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4357 {
4358 megacmd_t mc;
4359
4360 memset(&mc, 0, sizeof(megacmd_t));
4361
4362 if( adapter->flag & BOARD_40LD ) {
4363 mc.cmd = FC_NEW_CONFIG;
4364 mc.opcode = NC_SUBOP_ENQUIRY3;
4365 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4366 }
4367 else {
4368 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4369 }
4370
4371 mc.xferaddr = (u32)dma_handle;
4372
4373 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4374 return -1;
4375 }
4376
4377 return 0;
4378 }
4379
4380
4381 /** mega_internal_dev_inquiry()
4382 * @adapter - pointer to our soft state
4383 * @ch - channel for this device
4384 * @tgt - ID of this device
4385 * @buf_dma_handle - DMA address of the buffer
4386 *
4387 * Issue the scsi inquiry for the specified device.
4388 */
4389 static int
4390 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4391 dma_addr_t buf_dma_handle)
4392 {
4393 mega_passthru *pthru;
4394 dma_addr_t pthru_dma_handle;
4395 megacmd_t mc;
4396 int rval;
4397 struct pci_dev *pdev;
4398
4399
4400 /*
4401 * For all internal commands, the buffer must be allocated in <4GB
4402 * address range
4403 */
4404 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4405
4406 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4407 &pthru_dma_handle);
4408
4409 if( pthru == NULL ) {
4410 free_local_pdev(pdev);
4411 return -1;
4412 }
4413
4414 pthru->timeout = 2;
4415 pthru->ars = 1;
4416 pthru->reqsenselen = 14;
4417 pthru->islogical = 0;
4418
4419 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4420
4421 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4422
4423 pthru->cdblen = 6;
4424
4425 pthru->cdb[0] = INQUIRY;
4426 pthru->cdb[1] = 0;
4427 pthru->cdb[2] = 0;
4428 pthru->cdb[3] = 0;
4429 pthru->cdb[4] = 255;
4430 pthru->cdb[5] = 0;
4431
4432
4433 pthru->dataxferaddr = (u32)buf_dma_handle;
4434 pthru->dataxferlen = 256;
4435
4436 memset(&mc, 0, sizeof(megacmd_t));
4437
4438 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4439 mc.xferaddr = (u32)pthru_dma_handle;
4440
4441 rval = mega_internal_command(adapter, &mc, pthru);
4442
4443 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4444 pthru_dma_handle);
4445
4446 free_local_pdev(pdev);
4447
4448 return rval;
4449 }
4450
4451
4452 /**
4453 * mega_internal_command()
4454 * @adapter - pointer to our soft state
4455 * @mc - the mailbox command
4456 * @pthru - Passthru structure for DCDB commands
4457 *
4458 * Issue the internal commands in interrupt mode.
4459 * The last argument is the address of the passthru structure if the command
4460 * to be fired is a passthru command
4461 *
4462 * lockscope specifies whether the caller has already acquired the lock. Of
4463 * course, the caller must know which lock we are talking about.
4464 *
4465 * Note: parameter 'pthru' is null for non-passthru commands.
4466 */
4467 static int
4468 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4469 {
4470 Scsi_Cmnd *scmd;
4471 struct scsi_device *sdev;
4472 scb_t *scb;
4473 int rval;
4474
4475 /*
4476 * The internal commands share one command id and hence are
4477 * serialized. This is so because we want to reserve maximum number of
4478 * available command ids for the I/O commands.
4479 */
4480 mutex_lock(&adapter->int_mtx);
4481
4482 scb = &adapter->int_scb;
4483 memset(scb, 0, sizeof(scb_t));
4484
4485 scmd = &adapter->int_scmd;
4486 memset(scmd, 0, sizeof(Scsi_Cmnd));
4487
4488 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4489 memset(sdev, 0, sizeof(struct scsi_device));
4490 scmd->device = sdev;
4491
4492 scmd->device->host = adapter->host;
4493 scmd->request_buffer = (void *)scb;
4494 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4495
4496 scb->state |= SCB_ACTIVE;
4497 scb->cmd = scmd;
4498
4499 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4500
4501 /*
4502 * Is it a passthru command
4503 */
4504 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4505
4506 scb->pthru = pthru;
4507 }
4508
4509 scb->idx = CMDID_INT_CMDS;
4510
4511 megaraid_queue(scmd, mega_internal_done);
4512
4513 wait_for_completion(&adapter->int_waitq);
4514
4515 rval = scmd->result;
4516 mc->status = scmd->result;
4517 kfree(sdev);
4518
4519 /*
4520 * Print a debug message for all failed commands. Applications can use
4521 * this information.
4522 */
4523 if( scmd->result && trace_level ) {
4524 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4525 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4526 }
4527
4528 mutex_unlock(&adapter->int_mtx);
4529
4530 return rval;
4531 }
4532
4533
4534 /**
4535 * mega_internal_done()
4536 * @scmd - internal scsi command
4537 *
4538 * Callback routine for internal commands.
4539 */
4540 static void
4541 mega_internal_done(Scsi_Cmnd *scmd)
4542 {
4543 adapter_t *adapter;
4544
4545 adapter = (adapter_t *)scmd->device->host->hostdata;
4546
4547 complete(&adapter->int_waitq);
4548
4549 }
4550
4551
4552 static struct scsi_host_template megaraid_template = {
4553 .module = THIS_MODULE,
4554 .name = "MegaRAID",
4555 .proc_name = "megaraid_legacy",
4556 .info = megaraid_info,
4557 .queuecommand = megaraid_queue,
4558 .bios_param = megaraid_biosparam,
4559 .max_sectors = MAX_SECTORS_PER_IO,
4560 .can_queue = MAX_COMMANDS,
4561 .this_id = DEFAULT_INITIATOR_ID,
4562 .sg_tablesize = MAX_SGLIST,
4563 .cmd_per_lun = DEF_CMD_PER_LUN,
4564 .use_clustering = ENABLE_CLUSTERING,
4565 .eh_abort_handler = megaraid_abort,
4566 .eh_device_reset_handler = megaraid_reset,
4567 .eh_bus_reset_handler = megaraid_reset,
4568 .eh_host_reset_handler = megaraid_reset,
4569 };
4570
4571 static int __devinit
4572 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4573 {
4574 struct Scsi_Host *host;
4575 adapter_t *adapter;
4576 unsigned long mega_baseport, tbase, flag = 0;
4577 u16 subsysid, subsysvid;
4578 u8 pci_bus, pci_dev_func;
4579 int irq, i, j;
4580 int error = -ENODEV;
4581
4582 if (pci_enable_device(pdev))
4583 goto out;
4584 pci_set_master(pdev);
4585
4586 pci_bus = pdev->bus->number;
4587 pci_dev_func = pdev->devfn;
4588
4589 /*
4590 * The megaraid3 stuff reports the ID of the Intel part which is not
4591 * remotely specific to the megaraid
4592 */
4593 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4594 u16 magic;
4595 /*
4596 * Don't fall over the Compaq management cards using the same
4597 * PCI identifier
4598 */
4599 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4600 pdev->subsystem_device == 0xC000)
4601 return -ENODEV;
4602 /* Now check the magic signature byte */
4603 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4604 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4605 return -ENODEV;
4606 /* Ok it is probably a megaraid */
4607 }
4608
4609 /*
4610 * For these vendor and device ids, signature offsets are not
4611 * valid and 64 bit is implicit
4612 */
4613 if (id->driver_data & BOARD_64BIT)
4614 flag |= BOARD_64BIT;
4615 else {
4616 u32 magic64;
4617
4618 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4619 if (magic64 == HBA_SIGNATURE_64BIT)
4620 flag |= BOARD_64BIT;
4621 }
4622
4623 subsysvid = pdev->subsystem_vendor;
4624 subsysid = pdev->subsystem_device;
4625
4626 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4627 id->vendor, id->device, pci_bus);
4628
4629 printk("slot %d:func %d\n",
4630 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4631
4632 /* Read the base port and IRQ from PCI */
4633 mega_baseport = pci_resource_start(pdev, 0);
4634 irq = pdev->irq;
4635
4636 tbase = mega_baseport;
4637 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4638 flag |= BOARD_MEMMAP;
4639
4640 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4641 printk(KERN_WARNING "megaraid: mem region busy!\n");
4642 goto out_disable_device;
4643 }
4644
4645 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4646 if (!mega_baseport) {
4647 printk(KERN_WARNING
4648 "megaraid: could not map hba memory\n");
4649 goto out_release_region;
4650 }
4651 } else {
4652 flag |= BOARD_IOMAP;
4653 mega_baseport += 0x10;
4654
4655 if (!request_region(mega_baseport, 16, "megaraid"))
4656 goto out_disable_device;
4657 }
4658
4659 /* Initialize SCSI Host structure */
4660 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4661 if (!host)
4662 goto out_iounmap;
4663
4664 adapter = (adapter_t *)host->hostdata;
4665 memset(adapter, 0, sizeof(adapter_t));
4666
4667 printk(KERN_NOTICE
4668 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4669 host->host_no, mega_baseport, irq);
4670
4671 adapter->base = mega_baseport;
4672 if (flag & BOARD_MEMMAP)
4673 adapter->mmio_base = (void __iomem *) mega_baseport;
4674
4675 INIT_LIST_HEAD(&adapter->free_list);
4676 INIT_LIST_HEAD(&adapter->pending_list);
4677 INIT_LIST_HEAD(&adapter->completed_list);
4678
4679 adapter->flag = flag;
4680 spin_lock_init(&adapter->lock);
4681
4682 host->cmd_per_lun = max_cmd_per_lun;
4683 host->max_sectors = max_sectors_per_io;
4684
4685 adapter->dev = pdev;
4686 adapter->host = host;
4687
4688 adapter->host->irq = irq;
4689
4690 if (flag & BOARD_MEMMAP)
4691 adapter->host->base = tbase;
4692 else {
4693 adapter->host->io_port = tbase;
4694 adapter->host->n_io_port = 16;
4695 }
4696
4697 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4698
4699 /*
4700 * Allocate buffer to issue internal commands.
4701 */
4702 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4703 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4704 if (!adapter->mega_buffer) {
4705 printk(KERN_WARNING "megaraid: out of RAM.\n");
4706 goto out_host_put;
4707 }
4708
4709 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4710 if (!adapter->scb_list) {
4711 printk(KERN_WARNING "megaraid: out of RAM.\n");
4712 goto out_free_cmd_buffer;
4713 }
4714
4715 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4716 megaraid_isr_memmapped : megaraid_isr_iomapped,
4717 IRQF_SHARED, "megaraid", adapter)) {
4718 printk(KERN_WARNING
4719 "megaraid: Couldn't register IRQ %d!\n", irq);
4720 goto out_free_scb_list;
4721 }
4722
4723 if (mega_setup_mailbox(adapter))
4724 goto out_free_irq;
4725
4726 if (mega_query_adapter(adapter))
4727 goto out_free_mbox;
4728
4729 /*
4730 * Have checks for some buggy f/w
4731 */
4732 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4733 /*
4734 * Which firmware
4735 */
4736 if (!strcmp(adapter->fw_version, "3.00") ||
4737 !strcmp(adapter->fw_version, "3.01")) {
4738
4739 printk( KERN_WARNING
4740 "megaraid: Your card is a Dell PERC "
4741 "2/SC RAID controller with "
4742 "firmware\nmegaraid: 3.00 or 3.01. "
4743 "This driver is known to have "
4744 "corruption issues\nmegaraid: with "
4745 "those firmware versions on this "
4746 "specific card. In order\nmegaraid: "
4747 "to protect your data, please upgrade "
4748 "your firmware to version\nmegaraid: "
4749 "3.10 or later, available from the "
4750 "Dell Technical Support web\n"
4751 "megaraid: site at\nhttp://support."
4752 "dell.com/us/en/filelib/download/"
4753 "index.asp?fileid=2940\n"
4754 );
4755 }
4756 }
4757
4758 /*
4759 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4760 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4761 * support, since this firmware cannot handle 64 bit
4762 * addressing
4763 */
4764 if ((subsysvid == HP_SUBSYS_VID) &&
4765 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4766 /*
4767 * which firmware
4768 */
4769 if (!strcmp(adapter->fw_version, "H01.07") ||
4770 !strcmp(adapter->fw_version, "H01.08") ||
4771 !strcmp(adapter->fw_version, "H01.09") ) {
4772 printk(KERN_WARNING
4773 "megaraid: Firmware H.01.07, "
4774 "H.01.08, and H.01.09 on 1M/2M "
4775 "controllers\n"
4776 "megaraid: do not support 64 bit "
4777 "addressing.\nmegaraid: DISABLING "
4778 "64 bit support.\n");
4779 adapter->flag &= ~BOARD_64BIT;
4780 }
4781 }
4782
4783 if (mega_is_bios_enabled(adapter))
4784 mega_hbas[hba_count].is_bios_enabled = 1;
4785 mega_hbas[hba_count].hostdata_addr = adapter;
4786
4787 /*
4788 * Find out which channel is raid and which is scsi. This is
4789 * for ROMB support.
4790 */
4791 mega_enum_raid_scsi(adapter);
4792
4793 /*
4794 * Find out if a logical drive is set as the boot drive. If
4795 * there is one, will make that as the first logical drive.
4796 * ROMB: Do we have to boot from a physical drive. Then all
4797 * the physical drives would appear before the logical disks.
4798 * Else, all the physical drives would be exported to the mid
4799 * layer after logical drives.
4800 */
4801 mega_get_boot_drv(adapter);
4802
4803 if (adapter->boot_pdrv_enabled) {
4804 j = adapter->product_info.nchannels;
4805 for( i = 0; i < j; i++ )
4806 adapter->logdrv_chan[i] = 0;
4807 for( i = j; i < NVIRT_CHAN + j; i++ )
4808 adapter->logdrv_chan[i] = 1;
4809 } else {
4810 for (i = 0; i < NVIRT_CHAN; i++)
4811 adapter->logdrv_chan[i] = 1;
4812 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4813 adapter->logdrv_chan[i] = 0;
4814 adapter->mega_ch_class <<= NVIRT_CHAN;
4815 }
4816
4817 /*
4818 * Do we support random deletion and addition of logical
4819 * drives
4820 */
4821 adapter->read_ldidmap = 0; /* set it after first logdrv
4822 delete cmd */
4823 adapter->support_random_del = mega_support_random_del(adapter);
4824
4825 /* Initialize SCBs */
4826 if (mega_init_scb(adapter))
4827 goto out_free_mbox;
4828
4829 /*
4830 * Reset the pending commands counter
4831 */
4832 atomic_set(&adapter->pend_cmds, 0);
4833
4834 /*
4835 * Reset the adapter quiescent flag
4836 */
4837 atomic_set(&adapter->quiescent, 0);
4838
4839 hba_soft_state[hba_count] = adapter;
4840
4841 /*
4842 * Fill in the structure which needs to be passed back to the
4843 * application when it does an ioctl() for controller related
4844 * information.
4845 */
4846 i = hba_count;
4847
4848 mcontroller[i].base = mega_baseport;
4849 mcontroller[i].irq = irq;
4850 mcontroller[i].numldrv = adapter->numldrv;
4851 mcontroller[i].pcibus = pci_bus;
4852 mcontroller[i].pcidev = id->device;
4853 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4854 mcontroller[i].pciid = -1;
4855 mcontroller[i].pcivendor = id->vendor;
4856 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4857 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4858
4859
4860 /* Set the Mode of addressing to 64 bit if we can */
4861 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4862 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4863 adapter->has_64bit_addr = 1;
4864 } else {
4865 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4866 adapter->has_64bit_addr = 0;
4867 }
4868
4869 mutex_init(&adapter->int_mtx);
4870 init_completion(&adapter->int_waitq);
4871
4872 adapter->this_id = DEFAULT_INITIATOR_ID;
4873 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4874
4875 #if MEGA_HAVE_CLUSTERING
4876 /*
4877 * Is cluster support enabled on this controller
4878 * Note: In a cluster the HBAs ( the initiators ) will have
4879 * different target IDs and we cannot assume it to be 7. Call
4880 * to mega_support_cluster() will get the target ids also if
4881 * the cluster support is available
4882 */
4883 adapter->has_cluster = mega_support_cluster(adapter);
4884 if (adapter->has_cluster) {
4885 printk(KERN_NOTICE
4886 "megaraid: Cluster driver, initiator id:%d\n",
4887 adapter->this_id);
4888 }
4889 #endif
4890
4891 pci_set_drvdata(pdev, host);
4892
4893 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4894
4895 error = scsi_add_host(host, &pdev->dev);
4896 if (error)
4897 goto out_free_mbox;
4898
4899 scsi_scan_host(host);
4900 hba_count++;
4901 return 0;
4902
4903 out_free_mbox:
4904 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4905 adapter->una_mbox64, adapter->una_mbox64_dma);
4906 out_free_irq:
4907 free_irq(adapter->host->irq, adapter);
4908 out_free_scb_list:
4909 kfree(adapter->scb_list);
4910 out_free_cmd_buffer:
4911 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4912 adapter->mega_buffer, adapter->buf_dma_handle);
4913 out_host_put:
4914 scsi_host_put(host);
4915 out_iounmap:
4916 if (flag & BOARD_MEMMAP)
4917 iounmap((void *)mega_baseport);
4918 out_release_region:
4919 if (flag & BOARD_MEMMAP)
4920 release_mem_region(tbase, 128);
4921 else
4922 release_region(mega_baseport, 16);
4923 out_disable_device:
4924 pci_disable_device(pdev);
4925 out:
4926 return error;
4927 }
4928
4929 static void
4930 __megaraid_shutdown(adapter_t *adapter)
4931 {
4932 u_char raw_mbox[sizeof(struct mbox_out)];
4933 mbox_t *mbox = (mbox_t *)raw_mbox;
4934 int i;
4935
4936 /* Flush adapter cache */
4937 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4938 raw_mbox[0] = FLUSH_ADAPTER;
4939
4940 free_irq(adapter->host->irq, adapter);
4941
4942 /* Issue a blocking (interrupts disabled) command to the card */
4943 issue_scb_block(adapter, raw_mbox);
4944
4945 /* Flush disks cache */
4946 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4947 raw_mbox[0] = FLUSH_SYSTEM;
4948
4949 /* Issue a blocking (interrupts disabled) command to the card */
4950 issue_scb_block(adapter, raw_mbox);
4951
4952 if (atomic_read(&adapter->pend_cmds) > 0)
4953 printk(KERN_WARNING "megaraid: pending commands!!\n");
4954
4955 /*
4956 * Have a delibrate delay to make sure all the caches are
4957 * actually flushed.
4958 */
4959 for (i = 0; i <= 10; i++)
4960 mdelay(1000);
4961 }
4962
4963 static void
4964 megaraid_remove_one(struct pci_dev *pdev)
4965 {
4966 struct Scsi_Host *host = pci_get_drvdata(pdev);
4967 adapter_t *adapter = (adapter_t *)host->hostdata;
4968 char buf[12] = { 0 };
4969
4970 scsi_remove_host(host);
4971
4972 __megaraid_shutdown(adapter);
4973
4974 /* Free our resources */
4975 if (adapter->flag & BOARD_MEMMAP) {
4976 iounmap((void *)adapter->base);
4977 release_mem_region(adapter->host->base, 128);
4978 } else
4979 release_region(adapter->base, 16);
4980
4981 mega_free_sgl(adapter);
4982
4983 #ifdef CONFIG_PROC_FS
4984 if (adapter->controller_proc_dir_entry) {
4985 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4986 remove_proc_entry("config",
4987 adapter->controller_proc_dir_entry);
4988 remove_proc_entry("mailbox",
4989 adapter->controller_proc_dir_entry);
4990 #if MEGA_HAVE_ENH_PROC
4991 remove_proc_entry("rebuild-rate",
4992 adapter->controller_proc_dir_entry);
4993 remove_proc_entry("battery-status",
4994 adapter->controller_proc_dir_entry);
4995
4996 remove_proc_entry("diskdrives-ch0",
4997 adapter->controller_proc_dir_entry);
4998 remove_proc_entry("diskdrives-ch1",
4999 adapter->controller_proc_dir_entry);
5000 remove_proc_entry("diskdrives-ch2",
5001 adapter->controller_proc_dir_entry);
5002 remove_proc_entry("diskdrives-ch3",
5003 adapter->controller_proc_dir_entry);
5004
5005 remove_proc_entry("raiddrives-0-9",
5006 adapter->controller_proc_dir_entry);
5007 remove_proc_entry("raiddrives-10-19",
5008 adapter->controller_proc_dir_entry);
5009 remove_proc_entry("raiddrives-20-29",
5010 adapter->controller_proc_dir_entry);
5011 remove_proc_entry("raiddrives-30-39",
5012 adapter->controller_proc_dir_entry);
5013 #endif
5014 sprintf(buf, "hba%d", adapter->host->host_no);
5015 remove_proc_entry(buf, mega_proc_dir_entry);
5016 }
5017 #endif
5018
5019 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5020 adapter->mega_buffer, adapter->buf_dma_handle);
5021 kfree(adapter->scb_list);
5022 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5023 adapter->una_mbox64, adapter->una_mbox64_dma);
5024
5025 scsi_host_put(host);
5026 pci_disable_device(pdev);
5027
5028 hba_count--;
5029 }
5030
5031 static void
5032 megaraid_shutdown(struct pci_dev *pdev)
5033 {
5034 struct Scsi_Host *host = pci_get_drvdata(pdev);
5035 adapter_t *adapter = (adapter_t *)host->hostdata;
5036
5037 __megaraid_shutdown(adapter);
5038 }
5039
5040 static struct pci_device_id megaraid_pci_tbl[] = {
5041 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5042 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5043 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5044 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5045 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5046 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5047 {0,}
5048 };
5049 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5050
5051 static struct pci_driver megaraid_pci_driver = {
5052 .name = "megaraid_legacy",
5053 .id_table = megaraid_pci_tbl,
5054 .probe = megaraid_probe_one,
5055 .remove = __devexit_p(megaraid_remove_one),
5056 .shutdown = megaraid_shutdown,
5057 };
5058
5059 static int __init megaraid_init(void)
5060 {
5061 int error;
5062
5063 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5064 max_cmd_per_lun = MAX_CMD_PER_LUN;
5065 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5066 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5067
5068 #ifdef CONFIG_PROC_FS
5069 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5070 if (!mega_proc_dir_entry) {
5071 printk(KERN_WARNING
5072 "megaraid: failed to create megaraid root\n");
5073 }
5074 #endif
5075 error = pci_register_driver(&megaraid_pci_driver);
5076 if (error) {
5077 #ifdef CONFIG_PROC_FS
5078 remove_proc_entry("megaraid", &proc_root);
5079 #endif
5080 return error;
5081 }
5082
5083 /*
5084 * Register the driver as a character device, for applications
5085 * to access it for ioctls.
5086 * First argument (major) to register_chrdev implies a dynamic
5087 * major number allocation.
5088 */
5089 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5090 if (!major) {
5091 printk(KERN_WARNING
5092 "megaraid: failed to register char device\n");
5093 }
5094
5095 return 0;
5096 }
5097
5098 static void __exit megaraid_exit(void)
5099 {
5100 /*
5101 * Unregister the character device interface to the driver.
5102 */
5103 unregister_chrdev(major, "megadev_legacy");
5104
5105 pci_unregister_driver(&megaraid_pci_driver);
5106
5107 #ifdef CONFIG_PROC_FS
5108 remove_proc_entry("megaraid", &proc_root);
5109 #endif
5110 }
5111
5112 module_init(megaraid_init);
5113 module_exit(megaraid_exit);
5114
5115 /* vi: set ts=8 sw=8 tw=78: */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree