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ACPI: check a return value correctly in acpi_power_get_context()
[linux-2.6.22.y-op.git] / drivers / scsi / megaraid.c
blob3cce75d70263a4fd5b315e53241548f3b23a8012
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);
1758 cond_resched();
1759 }
1760 return -1; /* give up after 1 second */
1761 }
1762
1763 /*
1764 * Copies data to SGLIST
1765 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1766 */
1767 static int
1768 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1769 {
1770 struct scatterlist *sgl;
1771 struct page *page;
1772 unsigned long offset;
1773 unsigned int length;
1774 Scsi_Cmnd *cmd;
1775 int sgcnt;
1776 int idx;
1777
1778 cmd = scb->cmd;
1779
1780 /* Scatter-gather not used */
1781 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1782 !adapter->has_64bit_addr)) {
1783
1784 if (cmd->use_sg == 0) {
1785 page = virt_to_page(cmd->request_buffer);
1786 offset = offset_in_page(cmd->request_buffer);
1787 length = cmd->request_bufflen;
1788 } else {
1789 sgl = (struct scatterlist *)cmd->request_buffer;
1790 page = sgl->page;
1791 offset = sgl->offset;
1792 length = sgl->length;
1793 }
1794
1795 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1796 page, offset,
1797 length,
1798 scb->dma_direction);
1799 scb->dma_type = MEGA_BULK_DATA;
1800
1801 /*
1802 * We need to handle special 64-bit commands that need a
1803 * minimum of 1 SG
1804 */
1805 if( adapter->has_64bit_addr ) {
1806 scb->sgl64[0].address = scb->dma_h_bulkdata;
1807 scb->sgl64[0].length = length;
1808 *buf = (u32)scb->sgl_dma_addr;
1809 *len = (u32)length;
1810 return 1;
1811 }
1812 else {
1813 *buf = (u32)scb->dma_h_bulkdata;
1814 *len = (u32)length;
1815 }
1816 return 0;
1817 }
1818
1819 sgl = (struct scatterlist *)cmd->request_buffer;
1820
1821 /*
1822 * Copy Scatter-Gather list info into controller structure.
1823 *
1824 * The number of sg elements returned must not exceed our limit
1825 */
1826 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1827 scb->dma_direction);
1828
1829 scb->dma_type = MEGA_SGLIST;
1830
1831 BUG_ON(sgcnt > adapter->sglen);
1832
1833 *len = 0;
1834
1835 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1836
1837 if( adapter->has_64bit_addr ) {
1838 scb->sgl64[idx].address = sg_dma_address(sgl);
1839 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1840 }
1841 else {
1842 scb->sgl[idx].address = sg_dma_address(sgl);
1843 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1844 }
1845 }
1846
1847 /* Reset pointer and length fields */
1848 *buf = scb->sgl_dma_addr;
1849
1850 /* Return count of SG requests */
1851 return sgcnt;
1852 }
1853
1854
1855 /*
1856 * mega_8_to_40ld()
1857 *
1858 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1859 * Enquiry3 structures for later use
1860 */
1861 static void
1862 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1863 mega_product_info *product_info)
1864 {
1865 int i;
1866
1867 product_info->max_commands = inquiry->adapter_info.max_commands;
1868 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1869 product_info->nchannels = inquiry->adapter_info.nchannels;
1870
1871 for (i = 0; i < 4; i++) {
1872 product_info->fw_version[i] =
1873 inquiry->adapter_info.fw_version[i];
1874
1875 product_info->bios_version[i] =
1876 inquiry->adapter_info.bios_version[i];
1877 }
1878 enquiry3->cache_flush_interval =
1879 inquiry->adapter_info.cache_flush_interval;
1880
1881 product_info->dram_size = inquiry->adapter_info.dram_size;
1882
1883 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1884
1885 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1886 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1887 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1888 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1889 }
1890
1891 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1892 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1893 }
1894
1895 static inline void
1896 mega_free_sgl(adapter_t *adapter)
1897 {
1898 scb_t *scb;
1899 int i;
1900
1901 for(i = 0; i < adapter->max_cmds; i++) {
1902
1903 scb = &adapter->scb_list[i];
1904
1905 if( scb->sgl64 ) {
1906 pci_free_consistent(adapter->dev,
1907 sizeof(mega_sgl64) * adapter->sglen,
1908 scb->sgl64,
1909 scb->sgl_dma_addr);
1910
1911 scb->sgl64 = NULL;
1912 }
1913
1914 if( scb->pthru ) {
1915 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1916 scb->pthru, scb->pthru_dma_addr);
1917
1918 scb->pthru = NULL;
1919 }
1920
1921 if( scb->epthru ) {
1922 pci_free_consistent(adapter->dev,
1923 sizeof(mega_ext_passthru),
1924 scb->epthru, scb->epthru_dma_addr);
1925
1926 scb->epthru = NULL;
1927 }
1928
1929 }
1930 }
1931
1932
1933 /*
1934 * Get information about the card/driver
1935 */
1936 const char *
1937 megaraid_info(struct Scsi_Host *host)
1938 {
1939 static char buffer[512];
1940 adapter_t *adapter;
1941
1942 adapter = (adapter_t *)host->hostdata;
1943
1944 sprintf (buffer,
1945 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1946 adapter->fw_version, adapter->product_info.max_commands,
1947 adapter->host->max_id, adapter->host->max_channel,
1948 adapter->host->max_lun);
1949 return buffer;
1950 }
1951
1952 /*
1953 * Abort a previous SCSI request. Only commands on the pending list can be
1954 * aborted. All the commands issued to the F/W must complete.
1955 */
1956 static int
1957 megaraid_abort(Scsi_Cmnd *cmd)
1958 {
1959 adapter_t *adapter;
1960 int rval;
1961
1962 adapter = (adapter_t *)cmd->device->host->hostdata;
1963
1964 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1965
1966 /*
1967 * This is required here to complete any completed requests
1968 * to be communicated over to the mid layer.
1969 */
1970 mega_rundoneq(adapter);
1971
1972 return rval;
1973 }
1974
1975
1976 static int
1977 megaraid_reset(struct scsi_cmnd *cmd)
1978 {
1979 adapter_t *adapter;
1980 megacmd_t mc;
1981 int rval;
1982
1983 adapter = (adapter_t *)cmd->device->host->hostdata;
1984
1985 #if MEGA_HAVE_CLUSTERING
1986 mc.cmd = MEGA_CLUSTER_CMD;
1987 mc.opcode = MEGA_RESET_RESERVATIONS;
1988
1989 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1990 printk(KERN_WARNING
1991 "megaraid: reservation reset failed.\n");
1992 }
1993 else {
1994 printk(KERN_INFO "megaraid: reservation reset.\n");
1995 }
1996 #endif
1997
1998 spin_lock_irq(&adapter->lock);
1999
2000 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
2001
2002 /*
2003 * This is required here to complete any completed requests
2004 * to be communicated over to the mid layer.
2005 */
2006 mega_rundoneq(adapter);
2007 spin_unlock_irq(&adapter->lock);
2008
2009 return rval;
2010 }
2011
2012 /**
2013 * megaraid_abort_and_reset()
2014 * @adapter - megaraid soft state
2015 * @cmd - scsi command to be aborted or reset
2016 * @aor - abort or reset flag
2017 *
2018 * Try to locate the scsi command in the pending queue. If found and is not
2019 * issued to the controller, abort/reset it. Otherwise return failure
2020 */
2021 static int
2022 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2023 {
2024 struct list_head *pos, *next;
2025 scb_t *scb;
2026
2027 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2028 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2029 cmd->cmnd[0], cmd->device->channel,
2030 cmd->device->id, cmd->device->lun);
2031
2032 if(list_empty(&adapter->pending_list))
2033 return FALSE;
2034
2035 list_for_each_safe(pos, next, &adapter->pending_list) {
2036
2037 scb = list_entry(pos, scb_t, list);
2038
2039 if (scb->cmd == cmd) { /* Found command */
2040
2041 scb->state |= aor;
2042
2043 /*
2044 * Check if this command has firmare owenership. If
2045 * yes, we cannot reset this command. Whenever, f/w
2046 * completes this command, we will return appropriate
2047 * status from ISR.
2048 */
2049 if( scb->state & SCB_ISSUED ) {
2050
2051 printk(KERN_WARNING
2052 "megaraid: %s-%lx[%x], fw owner.\n",
2053 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2054 cmd->serial_number, scb->idx);
2055
2056 return FALSE;
2057 }
2058 else {
2059
2060 /*
2061 * Not yet issued! Remove from the pending
2062 * list
2063 */
2064 printk(KERN_WARNING
2065 "megaraid: %s-%lx[%x], driver owner.\n",
2066 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2067 cmd->serial_number, scb->idx);
2068
2069 mega_free_scb(adapter, scb);
2070
2071 if( aor == SCB_ABORT ) {
2072 cmd->result = (DID_ABORT << 16);
2073 }
2074 else {
2075 cmd->result = (DID_RESET << 16);
2076 }
2077
2078 list_add_tail(SCSI_LIST(cmd),
2079 &adapter->completed_list);
2080
2081 return TRUE;
2082 }
2083 }
2084 }
2085
2086 return FALSE;
2087 }
2088
2089 static inline int
2090 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2091 {
2092 *pdev = alloc_pci_dev();
2093
2094 if( *pdev == NULL ) return -1;
2095
2096 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2097
2098 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2099 kfree(*pdev);
2100 return -1;
2101 }
2102
2103 return 0;
2104 }
2105
2106 static inline void
2107 free_local_pdev(struct pci_dev *pdev)
2108 {
2109 kfree(pdev);
2110 }
2111
2112 /**
2113 * mega_allocate_inquiry()
2114 * @dma_handle - handle returned for dma address
2115 * @pdev - handle to pci device
2116 *
2117 * allocates memory for inquiry structure
2118 */
2119 static inline void *
2120 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2121 {
2122 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2123 }
2124
2125
2126 static inline void
2127 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2128 {
2129 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2130 }
2131
2132
2133 #ifdef CONFIG_PROC_FS
2134 /* Following code handles /proc fs */
2135
2136 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2137 S_IRUSR | S_IFREG, \
2138 controller_proc_dir_entry, \
2139 func, adapter)
2140
2141 /**
2142 * mega_create_proc_entry()
2143 * @index - index in soft state array
2144 * @parent - parent node for this /proc entry
2145 *
2146 * Creates /proc entries for our controllers.
2147 */
2148 static void
2149 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2150 {
2151 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2152 u8 string[64] = { 0 };
2153 adapter_t *adapter = hba_soft_state[index];
2154
2155 sprintf(string, "hba%d", adapter->host->host_no);
2156
2157 controller_proc_dir_entry =
2158 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2159
2160 if(!controller_proc_dir_entry) {
2161 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2162 return;
2163 }
2164 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2165 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2166 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2167 #if MEGA_HAVE_ENH_PROC
2168 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2169 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2170 proc_battery);
2171
2172 /*
2173 * Display each physical drive on its channel
2174 */
2175 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2176 proc_pdrv_ch0);
2177 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2178 proc_pdrv_ch1);
2179 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2180 proc_pdrv_ch2);
2181 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2182 proc_pdrv_ch3);
2183
2184 /*
2185 * Display a set of up to 10 logical drive through each of following
2186 * /proc entries
2187 */
2188 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2189 proc_rdrv_10);
2190 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2191 proc_rdrv_20);
2192 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2193 proc_rdrv_30);
2194 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2195 proc_rdrv_40);
2196 #endif
2197 }
2198
2199
2200 /**
2201 * proc_read_config()
2202 * @page - buffer to write the data in
2203 * @start - where the actual data has been written in page
2204 * @offset - same meaning as the read system call
2205 * @count - same meaning as the read system call
2206 * @eof - set if no more data needs to be returned
2207 * @data - pointer to our soft state
2208 *
2209 * Display configuration information about the controller.
2210 */
2211 static int
2212 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2213 void *data)
2214 {
2215
2216 adapter_t *adapter = (adapter_t *)data;
2217 int len = 0;
2218
2219 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2220
2221 if(adapter->product_info.product_name[0])
2222 len += sprintf(page+len, "%s\n",
2223 adapter->product_info.product_name);
2224
2225 len += sprintf(page+len, "Controller Type: ");
2226
2227 if( adapter->flag & BOARD_MEMMAP ) {
2228 len += sprintf(page+len,
2229 "438/466/467/471/493/518/520/531/532\n");
2230 }
2231 else {
2232 len += sprintf(page+len,
2233 "418/428/434\n");
2234 }
2235
2236 if(adapter->flag & BOARD_40LD) {
2237 len += sprintf(page+len,
2238 "Controller Supports 40 Logical Drives\n");
2239 }
2240
2241 if(adapter->flag & BOARD_64BIT) {
2242 len += sprintf(page+len,
2243 "Controller capable of 64-bit memory addressing\n");
2244 }
2245 if( adapter->has_64bit_addr ) {
2246 len += sprintf(page+len,
2247 "Controller using 64-bit memory addressing\n");
2248 }
2249 else {
2250 len += sprintf(page+len,
2251 "Controller is not using 64-bit memory addressing\n");
2252 }
2253
2254 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2255 adapter->host->irq);
2256
2257 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2258 adapter->numldrv, adapter->product_info.nchannels);
2259
2260 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2261 adapter->fw_version, adapter->bios_version,
2262 adapter->product_info.dram_size);
2263
2264 len += sprintf(page+len,
2265 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2266 adapter->product_info.max_commands, adapter->max_cmds);
2267
2268 len += sprintf(page+len, "support_ext_cdb = %d\n",
2269 adapter->support_ext_cdb);
2270 len += sprintf(page+len, "support_random_del = %d\n",
2271 adapter->support_random_del);
2272 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2273 adapter->boot_ldrv_enabled);
2274 len += sprintf(page+len, "boot_ldrv = %d\n",
2275 adapter->boot_ldrv);
2276 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2277 adapter->boot_pdrv_enabled);
2278 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2279 adapter->boot_pdrv_ch);
2280 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2281 adapter->boot_pdrv_tgt);
2282 len += sprintf(page+len, "quiescent = %d\n",
2283 atomic_read(&adapter->quiescent));
2284 len += sprintf(page+len, "has_cluster = %d\n",
2285 adapter->has_cluster);
2286
2287 len += sprintf(page+len, "\nModule Parameters:\n");
2288 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2289 max_cmd_per_lun);
2290 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2291 max_sectors_per_io);
2292
2293 *eof = 1;
2294
2295 return len;
2296 }
2297
2298
2299
2300 /**
2301 * proc_read_stat()
2302 * @page - buffer to write the data in
2303 * @start - where the actual data has been written in page
2304 * @offset - same meaning as the read system call
2305 * @count - same meaning as the read system call
2306 * @eof - set if no more data needs to be returned
2307 * @data - pointer to our soft state
2308 *
2309 * Diaplay statistical information about the I/O activity.
2310 */
2311 static int
2312 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2313 void *data)
2314 {
2315 adapter_t *adapter;
2316 int len;
2317 int i;
2318
2319 i = 0; /* avoid compilation warnings */
2320 len = 0;
2321 adapter = (adapter_t *)data;
2322
2323 len = sprintf(page, "Statistical Information for this controller\n");
2324 len += sprintf(page+len, "pend_cmds = %d\n",
2325 atomic_read(&adapter->pend_cmds));
2326 #if MEGA_HAVE_STATS
2327 for(i = 0; i < adapter->numldrv; i++) {
2328 len += sprintf(page+len, "Logical Drive %d:\n", i);
2329
2330 len += sprintf(page+len,
2331 "\tReads Issued = %lu, Writes Issued = %lu\n",
2332 adapter->nreads[i], adapter->nwrites[i]);
2333
2334 len += sprintf(page+len,
2335 "\tSectors Read = %lu, Sectors Written = %lu\n",
2336 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2337
2338 len += sprintf(page+len,
2339 "\tRead errors = %lu, Write errors = %lu\n\n",
2340 adapter->rd_errors[i], adapter->wr_errors[i]);
2341 }
2342 #else
2343 len += sprintf(page+len,
2344 "IO and error counters not compiled in driver.\n");
2345 #endif
2346
2347 *eof = 1;
2348
2349 return len;
2350 }
2351
2352
2353 /**
2354 * proc_read_mbox()
2355 * @page - buffer to write the data in
2356 * @start - where the actual data has been written in page
2357 * @offset - same meaning as the read system call
2358 * @count - same meaning as the read system call
2359 * @eof - set if no more data needs to be returned
2360 * @data - pointer to our soft state
2361 *
2362 * Display mailbox information for the last command issued. This information
2363 * is good for debugging.
2364 */
2365 static int
2366 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2367 void *data)
2368 {
2369
2370 adapter_t *adapter = (adapter_t *)data;
2371 volatile mbox_t *mbox = adapter->mbox;
2372 int len = 0;
2373
2374 len = sprintf(page, "Contents of Mail Box Structure\n");
2375 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2376 mbox->m_out.cmd);
2377 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2378 mbox->m_out.cmdid);
2379 len += sprintf(page+len, " No of Sectors= %04d\n",
2380 mbox->m_out.numsectors);
2381 len += sprintf(page+len, " LBA = 0x%02x\n",
2382 mbox->m_out.lba);
2383 len += sprintf(page+len, " DTA = 0x%08x\n",
2384 mbox->m_out.xferaddr);
2385 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2386 mbox->m_out.logdrv);
2387 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2388 mbox->m_out.numsgelements);
2389 len += sprintf(page+len, " Busy = %01x\n",
2390 mbox->m_in.busy);
2391 len += sprintf(page+len, " Status = 0x%02x\n",
2392 mbox->m_in.status);
2393
2394 *eof = 1;
2395
2396 return len;
2397 }
2398
2399
2400 /**
2401 * proc_rebuild_rate()
2402 * @page - buffer to write the data in
2403 * @start - where the actual data has been written in page
2404 * @offset - same meaning as the read system call
2405 * @count - same meaning as the read system call
2406 * @eof - set if no more data needs to be returned
2407 * @data - pointer to our soft state
2408 *
2409 * Display current rebuild rate
2410 */
2411 static int
2412 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2413 void *data)
2414 {
2415 adapter_t *adapter = (adapter_t *)data;
2416 dma_addr_t dma_handle;
2417 caddr_t inquiry;
2418 struct pci_dev *pdev;
2419 int len = 0;
2420
2421 if( make_local_pdev(adapter, &pdev) != 0 ) {
2422 *eof = 1;
2423 return len;
2424 }
2425
2426 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2427 free_local_pdev(pdev);
2428 *eof = 1;
2429 return len;
2430 }
2431
2432 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2433
2434 len = sprintf(page, "Adapter inquiry failed.\n");
2435
2436 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2437
2438 mega_free_inquiry(inquiry, dma_handle, pdev);
2439
2440 free_local_pdev(pdev);
2441
2442 *eof = 1;
2443
2444 return len;
2445 }
2446
2447 if( adapter->flag & BOARD_40LD ) {
2448 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2449 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2450 }
2451 else {
2452 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2453 ((mraid_ext_inquiry *)
2454 inquiry)->raid_inq.adapter_info.rebuild_rate);
2455 }
2456
2457
2458 mega_free_inquiry(inquiry, dma_handle, pdev);
2459
2460 free_local_pdev(pdev);
2461
2462 *eof = 1;
2463
2464 return len;
2465 }
2466
2467
2468 /**
2469 * proc_battery()
2470 * @page - buffer to write the data in
2471 * @start - where the actual data has been written in page
2472 * @offset - same meaning as the read system call
2473 * @count - same meaning as the read system call
2474 * @eof - set if no more data needs to be returned
2475 * @data - pointer to our soft state
2476 *
2477 * Display information about the battery module on the controller.
2478 */
2479 static int
2480 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2481 void *data)
2482 {
2483 adapter_t *adapter = (adapter_t *)data;
2484 dma_addr_t dma_handle;
2485 caddr_t inquiry;
2486 struct pci_dev *pdev;
2487 u8 battery_status = 0;
2488 char str[256];
2489 int len = 0;
2490
2491 if( make_local_pdev(adapter, &pdev) != 0 ) {
2492 *eof = 1;
2493 return len;
2494 }
2495
2496 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2497 free_local_pdev(pdev);
2498 *eof = 1;
2499 return len;
2500 }
2501
2502 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2503
2504 len = sprintf(page, "Adapter inquiry failed.\n");
2505
2506 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2507
2508 mega_free_inquiry(inquiry, dma_handle, pdev);
2509
2510 free_local_pdev(pdev);
2511
2512 *eof = 1;
2513
2514 return len;
2515 }
2516
2517 if( adapter->flag & BOARD_40LD ) {
2518 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2519 }
2520 else {
2521 battery_status = ((mraid_ext_inquiry *)inquiry)->
2522 raid_inq.adapter_info.battery_status;
2523 }
2524
2525 /*
2526 * Decode the battery status
2527 */
2528 sprintf(str, "Battery Status:[%d]", battery_status);
2529
2530 if(battery_status == MEGA_BATT_CHARGE_DONE)
2531 strcat(str, " Charge Done");
2532
2533 if(battery_status & MEGA_BATT_MODULE_MISSING)
2534 strcat(str, " Module Missing");
2535
2536 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2537 strcat(str, " Low Voltage");
2538
2539 if(battery_status & MEGA_BATT_TEMP_HIGH)
2540 strcat(str, " Temperature High");
2541
2542 if(battery_status & MEGA_BATT_PACK_MISSING)
2543 strcat(str, " Pack Missing");
2544
2545 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2546 strcat(str, " Charge In-progress");
2547
2548 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2549 strcat(str, " Charge Fail");
2550
2551 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2552 strcat(str, " Cycles Exceeded");
2553
2554 len = sprintf(page, "%s\n", str);
2555
2556
2557 mega_free_inquiry(inquiry, dma_handle, pdev);
2558
2559 free_local_pdev(pdev);
2560
2561 *eof = 1;
2562
2563 return len;
2564 }
2565
2566
2567 /**
2568 * proc_pdrv_ch0()
2569 * @page - buffer to write the data in
2570 * @start - where the actual data has been written in page
2571 * @offset - same meaning as the read system call
2572 * @count - same meaning as the read system call
2573 * @eof - set if no more data needs to be returned
2574 * @data - pointer to our soft state
2575 *
2576 * Display information about the physical drives on physical channel 0.
2577 */
2578 static int
2579 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2580 void *data)
2581 {
2582 adapter_t *adapter = (adapter_t *)data;
2583
2584 *eof = 1;
2585
2586 return (proc_pdrv(adapter, page, 0));
2587 }
2588
2589
2590 /**
2591 * proc_pdrv_ch1()
2592 * @page - buffer to write the data in
2593 * @start - where the actual data has been written in page
2594 * @offset - same meaning as the read system call
2595 * @count - same meaning as the read system call
2596 * @eof - set if no more data needs to be returned
2597 * @data - pointer to our soft state
2598 *
2599 * Display information about the physical drives on physical channel 1.
2600 */
2601 static int
2602 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2603 void *data)
2604 {
2605 adapter_t *adapter = (adapter_t *)data;
2606
2607 *eof = 1;
2608
2609 return (proc_pdrv(adapter, page, 1));
2610 }
2611
2612
2613 /**
2614 * proc_pdrv_ch2()
2615 * @page - buffer to write the data in
2616 * @start - where the actual data has been written in page
2617 * @offset - same meaning as the read system call
2618 * @count - same meaning as the read system call
2619 * @eof - set if no more data needs to be returned
2620 * @data - pointer to our soft state
2621 *
2622 * Display information about the physical drives on physical channel 2.
2623 */
2624 static int
2625 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2626 void *data)
2627 {
2628 adapter_t *adapter = (adapter_t *)data;
2629
2630 *eof = 1;
2631
2632 return (proc_pdrv(adapter, page, 2));
2633 }
2634
2635
2636 /**
2637 * proc_pdrv_ch3()
2638 * @page - buffer to write the data in
2639 * @start - where the actual data has been written in page
2640 * @offset - same meaning as the read system call
2641 * @count - same meaning as the read system call
2642 * @eof - set if no more data needs to be returned
2643 * @data - pointer to our soft state
2644 *
2645 * Display information about the physical drives on physical channel 3.
2646 */
2647 static int
2648 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2649 void *data)
2650 {
2651 adapter_t *adapter = (adapter_t *)data;
2652
2653 *eof = 1;
2654
2655 return (proc_pdrv(adapter, page, 3));
2656 }
2657
2658
2659 /**
2660 * proc_pdrv()
2661 * @page - buffer to write the data in
2662 * @adapter - pointer to our soft state
2663 *
2664 * Display information about the physical drives.
2665 */
2666 static int
2667 proc_pdrv(adapter_t *adapter, char *page, int channel)
2668 {
2669 dma_addr_t dma_handle;
2670 char *scsi_inq;
2671 dma_addr_t scsi_inq_dma_handle;
2672 caddr_t inquiry;
2673 struct pci_dev *pdev;
2674 u8 *pdrv_state;
2675 u8 state;
2676 int tgt;
2677 int max_channels;
2678 int len = 0;
2679 char str[80];
2680 int i;
2681
2682 if( make_local_pdev(adapter, &pdev) != 0 ) {
2683 return len;
2684 }
2685
2686 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2687 goto free_pdev;
2688 }
2689
2690 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2691 len = sprintf(page, "Adapter inquiry failed.\n");
2692
2693 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2694
2695 goto free_inquiry;
2696 }
2697
2698
2699 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2700
2701 if( scsi_inq == NULL ) {
2702 len = sprintf(page, "memory not available for scsi inq.\n");
2703
2704 goto free_inquiry;
2705 }
2706
2707 if( adapter->flag & BOARD_40LD ) {
2708 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2709 }
2710 else {
2711 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2712 raid_inq.pdrv_info.pdrv_state;
2713 }
2714
2715 max_channels = adapter->product_info.nchannels;
2716
2717 if( channel >= max_channels ) {
2718 goto free_pci;
2719 }
2720
2721 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2722
2723 i = channel*16 + tgt;
2724
2725 state = *(pdrv_state + i);
2726
2727 switch( state & 0x0F ) {
2728
2729 case PDRV_ONLINE:
2730 sprintf(str,
2731 "Channel:%2d Id:%2d State: Online",
2732 channel, tgt);
2733 break;
2734
2735 case PDRV_FAILED:
2736 sprintf(str,
2737 "Channel:%2d Id:%2d State: Failed",
2738 channel, tgt);
2739 break;
2740
2741 case PDRV_RBLD:
2742 sprintf(str,
2743 "Channel:%2d Id:%2d State: Rebuild",
2744 channel, tgt);
2745 break;
2746
2747 case PDRV_HOTSPARE:
2748 sprintf(str,
2749 "Channel:%2d Id:%2d State: Hot spare",
2750 channel, tgt);
2751 break;
2752
2753 default:
2754 sprintf(str,
2755 "Channel:%2d Id:%2d State: Un-configured",
2756 channel, tgt);
2757 break;
2758
2759 }
2760
2761 /*
2762 * This interface displays inquiries for disk drives
2763 * only. Inquries for logical drives and non-disk
2764 * devices are available through /proc/scsi/scsi
2765 */
2766 memset(scsi_inq, 0, 256);
2767 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2768 scsi_inq_dma_handle) ||
2769 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2770 continue;
2771 }
2772
2773 /*
2774 * Check for overflow. We print less than 240
2775 * characters for inquiry
2776 */
2777 if( (len + 240) >= PAGE_SIZE ) break;
2778
2779 len += sprintf(page+len, "%s.\n", str);
2780
2781 len += mega_print_inquiry(page+len, scsi_inq);
2782 }
2783
2784 free_pci:
2785 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2786 free_inquiry:
2787 mega_free_inquiry(inquiry, dma_handle, pdev);
2788 free_pdev:
2789 free_local_pdev(pdev);
2790
2791 return len;
2792 }
2793
2794
2795 /*
2796 * Display scsi inquiry
2797 */
2798 static int
2799 mega_print_inquiry(char *page, char *scsi_inq)
2800 {
2801 int len = 0;
2802 int i;
2803
2804 len = sprintf(page, " Vendor: ");
2805 for( i = 8; i < 16; i++ ) {
2806 len += sprintf(page+len, "%c", scsi_inq[i]);
2807 }
2808
2809 len += sprintf(page+len, " Model: ");
2810
2811 for( i = 16; i < 32; i++ ) {
2812 len += sprintf(page+len, "%c", scsi_inq[i]);
2813 }
2814
2815 len += sprintf(page+len, " Rev: ");
2816
2817 for( i = 32; i < 36; i++ ) {
2818 len += sprintf(page+len, "%c", scsi_inq[i]);
2819 }
2820
2821 len += sprintf(page+len, "\n");
2822
2823 i = scsi_inq[0] & 0x1f;
2824
2825 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2826
2827 len += sprintf(page+len,
2828 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2829
2830 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2831 len += sprintf(page+len, " CCS\n");
2832 else
2833 len += sprintf(page+len, "\n");
2834
2835 return len;
2836 }
2837
2838
2839 /**
2840 * proc_rdrv_10()
2841 * @page - buffer to write the data in
2842 * @start - where the actual data has been written in page
2843 * @offset - same meaning as the read system call
2844 * @count - same meaning as the read system call
2845 * @eof - set if no more data needs to be returned
2846 * @data - pointer to our soft state
2847 *
2848 * Display real time information about the logical drives 0 through 9.
2849 */
2850 static int
2851 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2852 void *data)
2853 {
2854 adapter_t *adapter = (adapter_t *)data;
2855
2856 *eof = 1;
2857
2858 return (proc_rdrv(adapter, page, 0, 9));
2859 }
2860
2861
2862 /**
2863 * proc_rdrv_20()
2864 * @page - buffer to write the data in
2865 * @start - where the actual data has been written in page
2866 * @offset - same meaning as the read system call
2867 * @count - same meaning as the read system call
2868 * @eof - set if no more data needs to be returned
2869 * @data - pointer to our soft state
2870 *
2871 * Display real time information about the logical drives 0 through 9.
2872 */
2873 static int
2874 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2875 void *data)
2876 {
2877 adapter_t *adapter = (adapter_t *)data;
2878
2879 *eof = 1;
2880
2881 return (proc_rdrv(adapter, page, 10, 19));
2882 }
2883
2884
2885 /**
2886 * proc_rdrv_30()
2887 * @page - buffer to write the data in
2888 * @start - where the actual data has been written in page
2889 * @offset - same meaning as the read system call
2890 * @count - same meaning as the read system call
2891 * @eof - set if no more data needs to be returned
2892 * @data - pointer to our soft state
2893 *
2894 * Display real time information about the logical drives 0 through 9.
2895 */
2896 static int
2897 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2898 void *data)
2899 {
2900 adapter_t *adapter = (adapter_t *)data;
2901
2902 *eof = 1;
2903
2904 return (proc_rdrv(adapter, page, 20, 29));
2905 }
2906
2907
2908 /**
2909 * proc_rdrv_40()
2910 * @page - buffer to write the data in
2911 * @start - where the actual data has been written in page
2912 * @offset - same meaning as the read system call
2913 * @count - same meaning as the read system call
2914 * @eof - set if no more data needs to be returned
2915 * @data - pointer to our soft state
2916 *
2917 * Display real time information about the logical drives 0 through 9.
2918 */
2919 static int
2920 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2921 void *data)
2922 {
2923 adapter_t *adapter = (adapter_t *)data;
2924
2925 *eof = 1;
2926
2927 return (proc_rdrv(adapter, page, 30, 39));
2928 }
2929
2930
2931 /**
2932 * proc_rdrv()
2933 * @page - buffer to write the data in
2934 * @adapter - pointer to our soft state
2935 * @start - starting logical drive to display
2936 * @end - ending logical drive to display
2937 *
2938 * We do not print the inquiry information since its already available through
2939 * /proc/scsi/scsi interface
2940 */
2941 static int
2942 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2943 {
2944 dma_addr_t dma_handle;
2945 logdrv_param *lparam;
2946 megacmd_t mc;
2947 char *disk_array;
2948 dma_addr_t disk_array_dma_handle;
2949 caddr_t inquiry;
2950 struct pci_dev *pdev;
2951 u8 *rdrv_state;
2952 int num_ldrv;
2953 u32 array_sz;
2954 int len = 0;
2955 int i;
2956
2957 if( make_local_pdev(adapter, &pdev) != 0 ) {
2958 return len;
2959 }
2960
2961 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2962 free_local_pdev(pdev);
2963 return len;
2964 }
2965
2966 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2967
2968 len = sprintf(page, "Adapter inquiry failed.\n");
2969
2970 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2971
2972 mega_free_inquiry(inquiry, dma_handle, pdev);
2973
2974 free_local_pdev(pdev);
2975
2976 return len;
2977 }
2978
2979 memset(&mc, 0, sizeof(megacmd_t));
2980
2981 if( adapter->flag & BOARD_40LD ) {
2982 array_sz = sizeof(disk_array_40ld);
2983
2984 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2985
2986 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2987 }
2988 else {
2989 array_sz = sizeof(disk_array_8ld);
2990
2991 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2992 raid_inq.logdrv_info.ldrv_state;
2993
2994 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2995 raid_inq.logdrv_info.num_ldrv;
2996 }
2997
2998 disk_array = pci_alloc_consistent(pdev, array_sz,
2999 &disk_array_dma_handle);
3000
3001 if( disk_array == NULL ) {
3002 len = sprintf(page, "memory not available.\n");
3003
3004 mega_free_inquiry(inquiry, dma_handle, pdev);
3005
3006 free_local_pdev(pdev);
3007
3008 return len;
3009 }
3010
3011 mc.xferaddr = (u32)disk_array_dma_handle;
3012
3013 if( adapter->flag & BOARD_40LD ) {
3014 mc.cmd = FC_NEW_CONFIG;
3015 mc.opcode = OP_DCMD_READ_CONFIG;
3016
3017 if( mega_internal_command(adapter, &mc, NULL) ) {
3018
3019 len = sprintf(page, "40LD read config failed.\n");
3020
3021 mega_free_inquiry(inquiry, dma_handle, pdev);
3022
3023 pci_free_consistent(pdev, array_sz, disk_array,
3024 disk_array_dma_handle);
3025
3026 free_local_pdev(pdev);
3027
3028 return len;
3029 }
3030
3031 }
3032 else {
3033 mc.cmd = NEW_READ_CONFIG_8LD;
3034
3035 if( mega_internal_command(adapter, &mc, NULL) ) {
3036
3037 mc.cmd = READ_CONFIG_8LD;
3038
3039 if( mega_internal_command(adapter, &mc,
3040 NULL) ){
3041
3042 len = sprintf(page,
3043 "8LD read config failed.\n");
3044
3045 mega_free_inquiry(inquiry, dma_handle, pdev);
3046
3047 pci_free_consistent(pdev, array_sz,
3048 disk_array,
3049 disk_array_dma_handle);
3050
3051 free_local_pdev(pdev);
3052
3053 return len;
3054 }
3055 }
3056 }
3057
3058 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3059
3060 if( adapter->flag & BOARD_40LD ) {
3061 lparam =
3062 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3063 }
3064 else {
3065 lparam =
3066 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3067 }
3068
3069 /*
3070 * Check for overflow. We print less than 240 characters for
3071 * information about each logical drive.
3072 */
3073 if( (len + 240) >= PAGE_SIZE ) break;
3074
3075 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3076
3077 switch( rdrv_state[i] & 0x0F ) {
3078 case RDRV_OFFLINE:
3079 len += sprintf(page+len, "state: offline");
3080 break;
3081
3082 case RDRV_DEGRADED:
3083 len += sprintf(page+len, "state: degraded");
3084 break;
3085
3086 case RDRV_OPTIMAL:
3087 len += sprintf(page+len, "state: optimal");
3088 break;
3089
3090 case RDRV_DELETED:
3091 len += sprintf(page+len, "state: deleted");
3092 break;
3093
3094 default:
3095 len += sprintf(page+len, "state: unknown");
3096 break;
3097 }
3098
3099 /*
3100 * Check if check consistency or initialization is going on
3101 * for this logical drive.
3102 */
3103 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3104 len += sprintf(page+len,
3105 ", check-consistency in progress");
3106 }
3107 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3108 len += sprintf(page+len,
3109 ", initialization in progress");
3110 }
3111
3112 len += sprintf(page+len, "\n");
3113
3114 len += sprintf(page+len, "Span depth:%3d, ",
3115 lparam->span_depth);
3116
3117 len += sprintf(page+len, "RAID level:%3d, ",
3118 lparam->level);
3119
3120 len += sprintf(page+len, "Stripe size:%3d, ",
3121 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3122
3123 len += sprintf(page+len, "Row size:%3d\n",
3124 lparam->row_size);
3125
3126
3127 len += sprintf(page+len, "Read Policy: ");
3128
3129 switch(lparam->read_ahead) {
3130
3131 case NO_READ_AHEAD:
3132 len += sprintf(page+len, "No read ahead, ");
3133 break;
3134
3135 case READ_AHEAD:
3136 len += sprintf(page+len, "Read ahead, ");
3137 break;
3138
3139 case ADAP_READ_AHEAD:
3140 len += sprintf(page+len, "Adaptive, ");
3141 break;
3142
3143 }
3144
3145 len += sprintf(page+len, "Write Policy: ");
3146
3147 switch(lparam->write_mode) {
3148
3149 case WRMODE_WRITE_THRU:
3150 len += sprintf(page+len, "Write thru, ");
3151 break;
3152
3153 case WRMODE_WRITE_BACK:
3154 len += sprintf(page+len, "Write back, ");
3155 break;
3156 }
3157
3158 len += sprintf(page+len, "Cache Policy: ");
3159
3160 switch(lparam->direct_io) {
3161
3162 case CACHED_IO:
3163 len += sprintf(page+len, "Cached IO\n\n");
3164 break;
3165
3166 case DIRECT_IO:
3167 len += sprintf(page+len, "Direct IO\n\n");
3168 break;
3169 }
3170 }
3171
3172 mega_free_inquiry(inquiry, dma_handle, pdev);
3173
3174 pci_free_consistent(pdev, array_sz, disk_array,
3175 disk_array_dma_handle);
3176
3177 free_local_pdev(pdev);
3178
3179 return len;
3180 }
3181 #else
3182 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3183 {
3184 }
3185 #endif
3186
3187
3188 /**
3189 * megaraid_biosparam()
3190 *
3191 * Return the disk geometry for a particular disk
3192 */
3193 static int
3194 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3195 sector_t capacity, int geom[])
3196 {
3197 adapter_t *adapter;
3198 unsigned char *bh;
3199 int heads;
3200 int sectors;
3201 int cylinders;
3202 int rval;
3203
3204 /* Get pointer to host config structure */
3205 adapter = (adapter_t *)sdev->host->hostdata;
3206
3207 if (IS_RAID_CH(adapter, sdev->channel)) {
3208 /* Default heads (64) & sectors (32) */
3209 heads = 64;
3210 sectors = 32;
3211 cylinders = (ulong)capacity / (heads * sectors);
3212
3213 /*
3214 * Handle extended translation size for logical drives
3215 * > 1Gb
3216 */
3217 if ((ulong)capacity >= 0x200000) {
3218 heads = 255;
3219 sectors = 63;
3220 cylinders = (ulong)capacity / (heads * sectors);
3221 }
3222
3223 /* return result */
3224 geom[0] = heads;
3225 geom[1] = sectors;
3226 geom[2] = cylinders;
3227 }
3228 else {
3229 bh = scsi_bios_ptable(bdev);
3230
3231 if( bh ) {
3232 rval = scsi_partsize(bh, capacity,
3233 &geom[2], &geom[0], &geom[1]);
3234 kfree(bh);
3235 if( rval != -1 )
3236 return rval;
3237 }
3238
3239 printk(KERN_INFO
3240 "megaraid: invalid partition on this disk on channel %d\n",
3241 sdev->channel);
3242
3243 /* Default heads (64) & sectors (32) */
3244 heads = 64;
3245 sectors = 32;
3246 cylinders = (ulong)capacity / (heads * sectors);
3247
3248 /* Handle extended translation size for logical drives > 1Gb */
3249 if ((ulong)capacity >= 0x200000) {
3250 heads = 255;
3251 sectors = 63;
3252 cylinders = (ulong)capacity / (heads * sectors);
3253 }
3254
3255 /* return result */
3256 geom[0] = heads;
3257 geom[1] = sectors;
3258 geom[2] = cylinders;
3259 }
3260
3261 return 0;
3262 }
3263
3264 /**
3265 * mega_init_scb()
3266 * @adapter - pointer to our soft state
3267 *
3268 * Allocate memory for the various pointers in the scb structures:
3269 * scatter-gather list pointer, passthru and extended passthru structure
3270 * pointers.
3271 */
3272 static int
3273 mega_init_scb(adapter_t *adapter)
3274 {
3275 scb_t *scb;
3276 int i;
3277
3278 for( i = 0; i < adapter->max_cmds; i++ ) {
3279
3280 scb = &adapter->scb_list[i];
3281
3282 scb->sgl64 = NULL;
3283 scb->sgl = NULL;
3284 scb->pthru = NULL;
3285 scb->epthru = NULL;
3286 }
3287
3288 for( i = 0; i < adapter->max_cmds; i++ ) {
3289
3290 scb = &adapter->scb_list[i];
3291
3292 scb->idx = i;
3293
3294 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3295 sizeof(mega_sgl64) * adapter->sglen,
3296 &scb->sgl_dma_addr);
3297
3298 scb->sgl = (mega_sglist *)scb->sgl64;
3299
3300 if( !scb->sgl ) {
3301 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3302 mega_free_sgl(adapter);
3303 return -1;
3304 }
3305
3306 scb->pthru = pci_alloc_consistent(adapter->dev,
3307 sizeof(mega_passthru),
3308 &scb->pthru_dma_addr);
3309
3310 if( !scb->pthru ) {
3311 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3312 mega_free_sgl(adapter);
3313 return -1;
3314 }
3315
3316 scb->epthru = pci_alloc_consistent(adapter->dev,
3317 sizeof(mega_ext_passthru),
3318 &scb->epthru_dma_addr);
3319
3320 if( !scb->epthru ) {
3321 printk(KERN_WARNING
3322 "Can't allocate extended passthru.\n");
3323 mega_free_sgl(adapter);
3324 return -1;
3325 }
3326
3327
3328 scb->dma_type = MEGA_DMA_TYPE_NONE;
3329
3330 /*
3331 * Link to free list
3332 * lock not required since we are loading the driver, so no
3333 * commands possible right now.
3334 */
3335 scb->state = SCB_FREE;
3336 scb->cmd = NULL;
3337 list_add(&scb->list, &adapter->free_list);
3338 }
3339
3340 return 0;
3341 }
3342
3343
3344 /**
3345 * megadev_open()
3346 * @inode - unused
3347 * @filep - unused
3348 *
3349 * Routines for the character/ioctl interface to the driver. Find out if this
3350 * is a valid open. If yes, increment the module use count so that it cannot
3351 * be unloaded.
3352 */
3353 static int
3354 megadev_open (struct inode *inode, struct file *filep)
3355 {
3356 /*
3357 * Only allow superuser to access private ioctl interface
3358 */
3359 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3360
3361 return 0;
3362 }
3363
3364
3365 /**
3366 * megadev_ioctl()
3367 * @inode - Our device inode
3368 * @filep - unused
3369 * @cmd - ioctl command
3370 * @arg - user buffer
3371 *
3372 * ioctl entry point for our private ioctl interface. We move the data in from
3373 * the user space, prepare the command (if necessary, convert the old MIMD
3374 * ioctl to new ioctl command), and issue a synchronous command to the
3375 * controller.
3376 */
3377 static int
3378 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3379 unsigned long arg)
3380 {
3381 adapter_t *adapter;
3382 nitioctl_t uioc;
3383 int adapno;
3384 int rval;
3385 mega_passthru __user *upthru; /* user address for passthru */
3386 mega_passthru *pthru; /* copy user passthru here */
3387 dma_addr_t pthru_dma_hndl;
3388 void *data = NULL; /* data to be transferred */
3389 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3390 megacmd_t mc;
3391 megastat_t __user *ustats;
3392 int num_ldrv;
3393 u32 uxferaddr = 0;
3394 struct pci_dev *pdev;
3395
3396 ustats = NULL; /* avoid compilation warnings */
3397 num_ldrv = 0;
3398
3399 /*
3400 * Make sure only USCSICMD are issued through this interface.
3401 * MIMD application would still fire different command.
3402 */
3403 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3404 return -EINVAL;
3405 }
3406
3407 /*
3408 * Check and convert a possible MIMD command to NIT command.
3409 * mega_m_to_n() copies the data from the user space, so we do not
3410 * have to do it here.
3411 * NOTE: We will need some user address to copyout the data, therefore
3412 * the inteface layer will also provide us with the required user
3413 * addresses.
3414 */
3415 memset(&uioc, 0, sizeof(nitioctl_t));
3416 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3417 return rval;
3418
3419
3420 switch( uioc.opcode ) {
3421
3422 case GET_DRIVER_VER:
3423 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3424 return (-EFAULT);
3425
3426 break;
3427
3428 case GET_N_ADAP:
3429 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3430 return (-EFAULT);
3431
3432 /*
3433 * Shucks. MIMD interface returns a positive value for number
3434 * of adapters. TODO: Change it to return 0 when there is no
3435 * applicatio using mimd interface.
3436 */
3437 return hba_count;
3438
3439 case GET_ADAP_INFO:
3440
3441 /*
3442 * Which adapter
3443 */
3444 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3445 return (-ENODEV);
3446
3447 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3448 sizeof(struct mcontroller)) )
3449 return (-EFAULT);
3450 break;
3451
3452 #if MEGA_HAVE_STATS
3453
3454 case GET_STATS:
3455 /*
3456 * Which adapter
3457 */
3458 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3459 return (-ENODEV);
3460
3461 adapter = hba_soft_state[adapno];
3462
3463 ustats = uioc.uioc_uaddr;
3464
3465 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3466 return (-EFAULT);
3467
3468 /*
3469 * Check for the validity of the logical drive number
3470 */
3471 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3472
3473 if( copy_to_user(ustats->nreads, adapter->nreads,
3474 num_ldrv*sizeof(u32)) )
3475 return -EFAULT;
3476
3477 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3478 num_ldrv*sizeof(u32)) )
3479 return -EFAULT;
3480
3481 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3482 num_ldrv*sizeof(u32)) )
3483 return -EFAULT;
3484
3485 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3486 num_ldrv*sizeof(u32)) )
3487 return -EFAULT;
3488
3489 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3490 num_ldrv*sizeof(u32)) )
3491 return -EFAULT;
3492
3493 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3494 num_ldrv*sizeof(u32)) )
3495 return -EFAULT;
3496
3497 return 0;
3498
3499 #endif
3500 case MBOX_CMD:
3501
3502 /*
3503 * Which adapter
3504 */
3505 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3506 return (-ENODEV);
3507
3508 adapter = hba_soft_state[adapno];
3509
3510 /*
3511 * Deletion of logical drive is a special case. The adapter
3512 * should be quiescent before this command is issued.
3513 */
3514 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3515 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3516
3517 /*
3518 * Do we support this feature
3519 */
3520 if( !adapter->support_random_del ) {
3521 printk(KERN_WARNING "megaraid: logdrv ");
3522 printk("delete on non-supporting F/W.\n");
3523
3524 return (-EINVAL);
3525 }
3526
3527 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3528
3529 if( rval == 0 ) {
3530 memset(&mc, 0, sizeof(megacmd_t));
3531
3532 mc.status = rval;
3533
3534 rval = mega_n_to_m((void __user *)arg, &mc);
3535 }
3536
3537 return rval;
3538 }
3539 /*
3540 * This interface only support the regular passthru commands.
3541 * Reject extended passthru and 64-bit passthru
3542 */
3543 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3544 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3545
3546 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3547
3548 return (-EINVAL);
3549 }
3550
3551 /*
3552 * For all internal commands, the buffer must be allocated in
3553 * <4GB address range
3554 */
3555 if( make_local_pdev(adapter, &pdev) != 0 )
3556 return -EIO;
3557
3558 /* Is it a passthru command or a DCMD */
3559 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3560 /* Passthru commands */
3561
3562 pthru = pci_alloc_consistent(pdev,
3563 sizeof(mega_passthru),
3564 &pthru_dma_hndl);
3565
3566 if( pthru == NULL ) {
3567 free_local_pdev(pdev);
3568 return (-ENOMEM);
3569 }
3570
3571 /*
3572 * The user passthru structure
3573 */
3574 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3575
3576 /*
3577 * Copy in the user passthru here.
3578 */
3579 if( copy_from_user(pthru, upthru,
3580 sizeof(mega_passthru)) ) {
3581
3582 pci_free_consistent(pdev,
3583 sizeof(mega_passthru), pthru,
3584 pthru_dma_hndl);
3585
3586 free_local_pdev(pdev);
3587
3588 return (-EFAULT);
3589 }
3590
3591 /*
3592 * Is there a data transfer
3593 */
3594 if( pthru->dataxferlen ) {
3595 data = pci_alloc_consistent(pdev,
3596 pthru->dataxferlen,
3597 &data_dma_hndl);
3598
3599 if( data == NULL ) {
3600 pci_free_consistent(pdev,
3601 sizeof(mega_passthru),
3602 pthru,
3603 pthru_dma_hndl);
3604
3605 free_local_pdev(pdev);
3606
3607 return (-ENOMEM);
3608 }
3609
3610 /*
3611 * Save the user address and point the kernel
3612 * address at just allocated memory
3613 */
3614 uxferaddr = pthru->dataxferaddr;
3615 pthru->dataxferaddr = data_dma_hndl;
3616 }
3617
3618
3619 /*
3620 * Is data coming down-stream
3621 */
3622 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3623 /*
3624 * Get the user data
3625 */
3626 if( copy_from_user(data, (char __user *)uxferaddr,
3627 pthru->dataxferlen) ) {
3628 rval = (-EFAULT);
3629 goto freemem_and_return;
3630 }
3631 }
3632
3633 memset(&mc, 0, sizeof(megacmd_t));
3634
3635 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3636 mc.xferaddr = (u32)pthru_dma_hndl;
3637
3638 /*
3639 * Issue the command
3640 */
3641 mega_internal_command(adapter, &mc, pthru);
3642
3643 rval = mega_n_to_m((void __user *)arg, &mc);
3644
3645 if( rval ) goto freemem_and_return;
3646
3647
3648 /*
3649 * Is data going up-stream
3650 */
3651 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3652 if( copy_to_user((char __user *)uxferaddr, data,
3653 pthru->dataxferlen) ) {
3654 rval = (-EFAULT);
3655 }
3656 }
3657
3658 /*
3659 * Send the request sense data also, irrespective of
3660 * whether the user has asked for it or not.
3661 */
3662 if (copy_to_user(upthru->reqsensearea,
3663 pthru->reqsensearea, 14))
3664 rval = -EFAULT;
3665
3666 freemem_and_return:
3667 if( pthru->dataxferlen ) {
3668 pci_free_consistent(pdev,
3669 pthru->dataxferlen, data,
3670 data_dma_hndl);
3671 }
3672
3673 pci_free_consistent(pdev, sizeof(mega_passthru),
3674 pthru, pthru_dma_hndl);
3675
3676 free_local_pdev(pdev);
3677
3678 return rval;
3679 }
3680 else {
3681 /* DCMD commands */
3682
3683 /*
3684 * Is there a data transfer
3685 */
3686 if( uioc.xferlen ) {
3687 data = pci_alloc_consistent(pdev,
3688 uioc.xferlen, &data_dma_hndl);
3689
3690 if( data == NULL ) {
3691 free_local_pdev(pdev);
3692 return (-ENOMEM);
3693 }
3694
3695 uxferaddr = MBOX(uioc)->xferaddr;
3696 }
3697
3698 /*
3699 * Is data coming down-stream
3700 */
3701 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3702 /*
3703 * Get the user data
3704 */
3705 if( copy_from_user(data, (char __user *)uxferaddr,
3706 uioc.xferlen) ) {
3707
3708 pci_free_consistent(pdev,
3709 uioc.xferlen,
3710 data, data_dma_hndl);
3711
3712 free_local_pdev(pdev);
3713
3714 return (-EFAULT);
3715 }
3716 }
3717
3718 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3719
3720 mc.xferaddr = (u32)data_dma_hndl;
3721
3722 /*
3723 * Issue the command
3724 */
3725 mega_internal_command(adapter, &mc, NULL);
3726
3727 rval = mega_n_to_m((void __user *)arg, &mc);
3728
3729 if( rval ) {
3730 if( uioc.xferlen ) {
3731 pci_free_consistent(pdev,
3732 uioc.xferlen, data,
3733 data_dma_hndl);
3734 }
3735
3736 free_local_pdev(pdev);
3737
3738 return rval;
3739 }
3740
3741 /*
3742 * Is data going up-stream
3743 */
3744 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3745 if( copy_to_user((char __user *)uxferaddr, data,
3746 uioc.xferlen) ) {
3747
3748 rval = (-EFAULT);
3749 }
3750 }
3751
3752 if( uioc.xferlen ) {
3753 pci_free_consistent(pdev,
3754 uioc.xferlen, data,
3755 data_dma_hndl);
3756 }
3757
3758 free_local_pdev(pdev);
3759
3760 return rval;
3761 }
3762
3763 default:
3764 return (-EINVAL);
3765 }
3766
3767 return 0;
3768 }
3769
3770 /**
3771 * mega_m_to_n()
3772 * @arg - user address
3773 * @uioc - new ioctl structure
3774 *
3775 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3776 * structure
3777 *
3778 * Converts the older mimd ioctl structure to newer NIT structure
3779 */
3780 static int
3781 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3782 {
3783 struct uioctl_t uioc_mimd;
3784 char signature[8] = {0};
3785 u8 opcode;
3786 u8 subopcode;
3787
3788
3789 /*
3790 * check is the application conforms to NIT. We do not have to do much
3791 * in that case.
3792 * We exploit the fact that the signature is stored in the very
3793 * begining of the structure.
3794 */
3795
3796 if( copy_from_user(signature, arg, 7) )
3797 return (-EFAULT);
3798
3799 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3800
3801 /*
3802 * NOTE NOTE: The nit ioctl is still under flux because of
3803 * change of mailbox definition, in HPE. No applications yet
3804 * use this interface and let's not have applications use this
3805 * interface till the new specifitions are in place.
3806 */
3807 return -EINVAL;
3808 #if 0
3809 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3810 return (-EFAULT);
3811 return 0;
3812 #endif
3813 }
3814
3815 /*
3816 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3817 *
3818 * Get the user ioctl structure
3819 */
3820 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3821 return (-EFAULT);
3822
3823
3824 /*
3825 * Get the opcode and subopcode for the commands
3826 */
3827 opcode = uioc_mimd.ui.fcs.opcode;
3828 subopcode = uioc_mimd.ui.fcs.subopcode;
3829
3830 switch (opcode) {
3831 case 0x82:
3832
3833 switch (subopcode) {
3834
3835 case MEGAIOC_QDRVRVER: /* Query driver version */
3836 uioc->opcode = GET_DRIVER_VER;
3837 uioc->uioc_uaddr = uioc_mimd.data;
3838 break;
3839
3840 case MEGAIOC_QNADAP: /* Get # of adapters */
3841 uioc->opcode = GET_N_ADAP;
3842 uioc->uioc_uaddr = uioc_mimd.data;
3843 break;
3844
3845 case MEGAIOC_QADAPINFO: /* Get adapter information */
3846 uioc->opcode = GET_ADAP_INFO;
3847 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3848 uioc->uioc_uaddr = uioc_mimd.data;
3849 break;
3850
3851 default:
3852 return(-EINVAL);
3853 }
3854
3855 break;
3856
3857
3858 case 0x81:
3859
3860 uioc->opcode = MBOX_CMD;
3861 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3862
3863 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3864
3865 uioc->xferlen = uioc_mimd.ui.fcs.length;
3866
3867 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3868 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3869
3870 break;
3871
3872 case 0x80:
3873
3874 uioc->opcode = MBOX_CMD;
3875 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3876
3877 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3878
3879 /*
3880 * Choose the xferlen bigger of input and output data
3881 */
3882 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3883 uioc_mimd.outlen : uioc_mimd.inlen;
3884
3885 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3886 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3887
3888 break;
3889
3890 default:
3891 return (-EINVAL);
3892
3893 }
3894
3895 return 0;
3896 }
3897
3898 /*
3899 * mega_n_to_m()
3900 * @arg - user address
3901 * @mc - mailbox command
3902 *
3903 * Updates the status information to the application, depending on application
3904 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3905 */
3906 static int
3907 mega_n_to_m(void __user *arg, megacmd_t *mc)
3908 {
3909 nitioctl_t __user *uiocp;
3910 megacmd_t __user *umc;
3911 mega_passthru __user *upthru;
3912 struct uioctl_t __user *uioc_mimd;
3913 char signature[8] = {0};
3914
3915 /*
3916 * check is the application conforms to NIT.
3917 */
3918 if( copy_from_user(signature, arg, 7) )
3919 return -EFAULT;
3920
3921 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3922
3923 uiocp = arg;
3924
3925 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3926 return (-EFAULT);
3927
3928 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3929
3930 umc = MBOX_P(uiocp);
3931
3932 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3933 return -EFAULT;
3934
3935 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3936 return (-EFAULT);
3937 }
3938 }
3939 else {
3940 uioc_mimd = arg;
3941
3942 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3943 return (-EFAULT);
3944
3945 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3946
3947 umc = (megacmd_t __user *)uioc_mimd->mbox;
3948
3949 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3950 return (-EFAULT);
3951
3952 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3953 return (-EFAULT);
3954 }
3955 }
3956
3957 return 0;
3958 }
3959
3960
3961 /*
3962 * MEGARAID 'FW' commands.
3963 */
3964
3965 /**
3966 * mega_is_bios_enabled()
3967 * @adapter - pointer to our soft state
3968 *
3969 * issue command to find out if the BIOS is enabled for this controller
3970 */
3971 static int
3972 mega_is_bios_enabled(adapter_t *adapter)
3973 {
3974 unsigned char raw_mbox[sizeof(struct mbox_out)];
3975 mbox_t *mbox;
3976 int ret;
3977
3978 mbox = (mbox_t *)raw_mbox;
3979
3980 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3981
3982 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3983
3984 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3985
3986 raw_mbox[0] = IS_BIOS_ENABLED;
3987 raw_mbox[2] = GET_BIOS;
3988
3989
3990 ret = issue_scb_block(adapter, raw_mbox);
3991
3992 return *(char *)adapter->mega_buffer;
3993 }
3994
3995
3996 /**
3997 * mega_enum_raid_scsi()
3998 * @adapter - pointer to our soft state
3999 *
4000 * Find out what channels are RAID/SCSI. This information is used to
4001 * differentiate the virtual channels and physical channels and to support
4002 * ROMB feature and non-disk devices.
4003 */
4004 static void
4005 mega_enum_raid_scsi(adapter_t *adapter)
4006 {
4007 unsigned char raw_mbox[sizeof(struct mbox_out)];
4008 mbox_t *mbox;
4009 int i;
4010
4011 mbox = (mbox_t *)raw_mbox;
4012
4013 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4014
4015 /*
4016 * issue command to find out what channels are raid/scsi
4017 */
4018 raw_mbox[0] = CHNL_CLASS;
4019 raw_mbox[2] = GET_CHNL_CLASS;
4020
4021 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4022
4023 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4024
4025 /*
4026 * Non-ROMB firmware fail this command, so all channels
4027 * must be shown RAID
4028 */
4029 adapter->mega_ch_class = 0xFF;
4030
4031 if(!issue_scb_block(adapter, raw_mbox)) {
4032 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4033
4034 }
4035
4036 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4037 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4038 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4039 i);
4040 }
4041 else {
4042 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4043 i);
4044 }
4045 }
4046
4047 return;
4048 }
4049
4050
4051 /**
4052 * mega_get_boot_drv()
4053 * @adapter - pointer to our soft state
4054 *
4055 * Find out which device is the boot device. Note, any logical drive or any
4056 * phyical device (e.g., a CDROM) can be designated as a boot device.
4057 */
4058 static void
4059 mega_get_boot_drv(adapter_t *adapter)
4060 {
4061 struct private_bios_data *prv_bios_data;
4062 unsigned char raw_mbox[sizeof(struct mbox_out)];
4063 mbox_t *mbox;
4064 u16 cksum = 0;
4065 u8 *cksum_p;
4066 u8 boot_pdrv;
4067 int i;
4068
4069 mbox = (mbox_t *)raw_mbox;
4070
4071 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4072
4073 raw_mbox[0] = BIOS_PVT_DATA;
4074 raw_mbox[2] = GET_BIOS_PVT_DATA;
4075
4076 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4077
4078 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4079
4080 adapter->boot_ldrv_enabled = 0;
4081 adapter->boot_ldrv = 0;
4082
4083 adapter->boot_pdrv_enabled = 0;
4084 adapter->boot_pdrv_ch = 0;
4085 adapter->boot_pdrv_tgt = 0;
4086
4087 if(issue_scb_block(adapter, raw_mbox) == 0) {
4088 prv_bios_data =
4089 (struct private_bios_data *)adapter->mega_buffer;
4090
4091 cksum = 0;
4092 cksum_p = (char *)prv_bios_data;
4093 for (i = 0; i < 14; i++ ) {
4094 cksum += (u16)(*cksum_p++);
4095 }
4096
4097 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4098
4099 /*
4100 * If MSB is set, a physical drive is set as boot
4101 * device
4102 */
4103 if( prv_bios_data->boot_drv & 0x80 ) {
4104 adapter->boot_pdrv_enabled = 1;
4105 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4106 adapter->boot_pdrv_ch = boot_pdrv / 16;
4107 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4108 }
4109 else {
4110 adapter->boot_ldrv_enabled = 1;
4111 adapter->boot_ldrv = prv_bios_data->boot_drv;
4112 }
4113 }
4114 }
4115
4116 }
4117
4118 /**
4119 * mega_support_random_del()
4120 * @adapter - pointer to our soft state
4121 *
4122 * Find out if this controller supports random deletion and addition of
4123 * logical drives
4124 */
4125 static int
4126 mega_support_random_del(adapter_t *adapter)
4127 {
4128 unsigned char raw_mbox[sizeof(struct mbox_out)];
4129 mbox_t *mbox;
4130 int rval;
4131
4132 mbox = (mbox_t *)raw_mbox;
4133
4134 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4135
4136 /*
4137 * issue command
4138 */
4139 raw_mbox[0] = FC_DEL_LOGDRV;
4140 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4141
4142 rval = issue_scb_block(adapter, raw_mbox);
4143
4144 return !rval;
4145 }
4146
4147
4148 /**
4149 * mega_support_ext_cdb()
4150 * @adapter - pointer to our soft state
4151 *
4152 * Find out if this firmware support cdblen > 10
4153 */
4154 static int
4155 mega_support_ext_cdb(adapter_t *adapter)
4156 {
4157 unsigned char raw_mbox[sizeof(struct mbox_out)];
4158 mbox_t *mbox;
4159 int rval;
4160
4161 mbox = (mbox_t *)raw_mbox;
4162
4163 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4164 /*
4165 * issue command to find out if controller supports extended CDBs.
4166 */
4167 raw_mbox[0] = 0xA4;
4168 raw_mbox[2] = 0x16;
4169
4170 rval = issue_scb_block(adapter, raw_mbox);
4171
4172 return !rval;
4173 }
4174
4175
4176 /**
4177 * mega_del_logdrv()
4178 * @adapter - pointer to our soft state
4179 * @logdrv - logical drive to be deleted
4180 *
4181 * Delete the specified logical drive. It is the responsibility of the user
4182 * app to let the OS know about this operation.
4183 */
4184 static int
4185 mega_del_logdrv(adapter_t *adapter, int logdrv)
4186 {
4187 unsigned long flags;
4188 scb_t *scb;
4189 int rval;
4190
4191 /*
4192 * Stop sending commands to the controller, queue them internally.
4193 * When deletion is complete, ISR will flush the queue.
4194 */
4195 atomic_set(&adapter->quiescent, 1);
4196
4197 /*
4198 * Wait till all the issued commands are complete and there are no
4199 * commands in the pending queue
4200 */
4201 while (atomic_read(&adapter->pend_cmds) > 0 ||
4202 !list_empty(&adapter->pending_list))
4203 msleep(1000); /* sleep for 1s */
4204
4205 rval = mega_do_del_logdrv(adapter, logdrv);
4206
4207 spin_lock_irqsave(&adapter->lock, flags);
4208
4209 /*
4210 * If delete operation was successful, add 0x80 to the logical drive
4211 * ids for commands in the pending queue.
4212 */
4213 if (adapter->read_ldidmap) {
4214 struct list_head *pos;
4215 list_for_each(pos, &adapter->pending_list) {
4216 scb = list_entry(pos, scb_t, list);
4217 if (scb->pthru->logdrv < 0x80 )
4218 scb->pthru->logdrv += 0x80;
4219 }
4220 }
4221
4222 atomic_set(&adapter->quiescent, 0);
4223
4224 mega_runpendq(adapter);
4225
4226 spin_unlock_irqrestore(&adapter->lock, flags);
4227
4228 return rval;
4229 }
4230
4231
4232 static int
4233 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4234 {
4235 megacmd_t mc;
4236 int rval;
4237
4238 memset( &mc, 0, sizeof(megacmd_t));
4239
4240 mc.cmd = FC_DEL_LOGDRV;
4241 mc.opcode = OP_DEL_LOGDRV;
4242 mc.subopcode = logdrv;
4243
4244 rval = mega_internal_command(adapter, &mc, NULL);
4245
4246 /* log this event */
4247 if(rval) {
4248 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4249 return rval;
4250 }
4251
4252 /*
4253 * After deleting first logical drive, the logical drives must be
4254 * addressed by adding 0x80 to the logical drive id.
4255 */
4256 adapter->read_ldidmap = 1;
4257
4258 return rval;
4259 }
4260
4261
4262 /**
4263 * mega_get_max_sgl()
4264 * @adapter - pointer to our soft state
4265 *
4266 * Find out the maximum number of scatter-gather elements supported by this
4267 * version of the firmware
4268 */
4269 static void
4270 mega_get_max_sgl(adapter_t *adapter)
4271 {
4272 unsigned char raw_mbox[sizeof(struct mbox_out)];
4273 mbox_t *mbox;
4274
4275 mbox = (mbox_t *)raw_mbox;
4276
4277 memset(mbox, 0, sizeof(raw_mbox));
4278
4279 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4280
4281 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4282
4283 raw_mbox[0] = MAIN_MISC_OPCODE;
4284 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4285
4286
4287 if( issue_scb_block(adapter, raw_mbox) ) {
4288 /*
4289 * f/w does not support this command. Choose the default value
4290 */
4291 adapter->sglen = MIN_SGLIST;
4292 }
4293 else {
4294 adapter->sglen = *((char *)adapter->mega_buffer);
4295
4296 /*
4297 * Make sure this is not more than the resources we are
4298 * planning to allocate
4299 */
4300 if ( adapter->sglen > MAX_SGLIST )
4301 adapter->sglen = MAX_SGLIST;
4302 }
4303
4304 return;
4305 }
4306
4307
4308 /**
4309 * mega_support_cluster()
4310 * @adapter - pointer to our soft state
4311 *
4312 * Find out if this firmware support cluster calls.
4313 */
4314 static int
4315 mega_support_cluster(adapter_t *adapter)
4316 {
4317 unsigned char raw_mbox[sizeof(struct mbox_out)];
4318 mbox_t *mbox;
4319
4320 mbox = (mbox_t *)raw_mbox;
4321
4322 memset(mbox, 0, sizeof(raw_mbox));
4323
4324 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4325
4326 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4327
4328 /*
4329 * Try to get the initiator id. This command will succeed iff the
4330 * clustering is available on this HBA.
4331 */
4332 raw_mbox[0] = MEGA_GET_TARGET_ID;
4333
4334 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4335
4336 /*
4337 * Cluster support available. Get the initiator target id.
4338 * Tell our id to mid-layer too.
4339 */
4340 adapter->this_id = *(u32 *)adapter->mega_buffer;
4341 adapter->host->this_id = adapter->this_id;
4342
4343 return 1;
4344 }
4345
4346 return 0;
4347 }
4348
4349 #ifdef CONFIG_PROC_FS
4350 /**
4351 * mega_adapinq()
4352 * @adapter - pointer to our soft state
4353 * @dma_handle - DMA address of the buffer
4354 *
4355 * Issue internal comamnds while interrupts are available.
4356 * We only issue direct mailbox commands from within the driver. ioctl()
4357 * interface using these routines can issue passthru commands.
4358 */
4359 static int
4360 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4361 {
4362 megacmd_t mc;
4363
4364 memset(&mc, 0, sizeof(megacmd_t));
4365
4366 if( adapter->flag & BOARD_40LD ) {
4367 mc.cmd = FC_NEW_CONFIG;
4368 mc.opcode = NC_SUBOP_ENQUIRY3;
4369 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4370 }
4371 else {
4372 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4373 }
4374
4375 mc.xferaddr = (u32)dma_handle;
4376
4377 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4378 return -1;
4379 }
4380
4381 return 0;
4382 }
4383
4384
4385 /** mega_internal_dev_inquiry()
4386 * @adapter - pointer to our soft state
4387 * @ch - channel for this device
4388 * @tgt - ID of this device
4389 * @buf_dma_handle - DMA address of the buffer
4390 *
4391 * Issue the scsi inquiry for the specified device.
4392 */
4393 static int
4394 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4395 dma_addr_t buf_dma_handle)
4396 {
4397 mega_passthru *pthru;
4398 dma_addr_t pthru_dma_handle;
4399 megacmd_t mc;
4400 int rval;
4401 struct pci_dev *pdev;
4402
4403
4404 /*
4405 * For all internal commands, the buffer must be allocated in <4GB
4406 * address range
4407 */
4408 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4409
4410 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4411 &pthru_dma_handle);
4412
4413 if( pthru == NULL ) {
4414 free_local_pdev(pdev);
4415 return -1;
4416 }
4417
4418 pthru->timeout = 2;
4419 pthru->ars = 1;
4420 pthru->reqsenselen = 14;
4421 pthru->islogical = 0;
4422
4423 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4424
4425 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4426
4427 pthru->cdblen = 6;
4428
4429 pthru->cdb[0] = INQUIRY;
4430 pthru->cdb[1] = 0;
4431 pthru->cdb[2] = 0;
4432 pthru->cdb[3] = 0;
4433 pthru->cdb[4] = 255;
4434 pthru->cdb[5] = 0;
4435
4436
4437 pthru->dataxferaddr = (u32)buf_dma_handle;
4438 pthru->dataxferlen = 256;
4439
4440 memset(&mc, 0, sizeof(megacmd_t));
4441
4442 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4443 mc.xferaddr = (u32)pthru_dma_handle;
4444
4445 rval = mega_internal_command(adapter, &mc, pthru);
4446
4447 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4448 pthru_dma_handle);
4449
4450 free_local_pdev(pdev);
4451
4452 return rval;
4453 }
4454 #endif
4455
4456 /**
4457 * mega_internal_command()
4458 * @adapter - pointer to our soft state
4459 * @mc - the mailbox command
4460 * @pthru - Passthru structure for DCDB commands
4461 *
4462 * Issue the internal commands in interrupt mode.
4463 * The last argument is the address of the passthru structure if the command
4464 * to be fired is a passthru command
4465 *
4466 * lockscope specifies whether the caller has already acquired the lock. Of
4467 * course, the caller must know which lock we are talking about.
4468 *
4469 * Note: parameter 'pthru' is null for non-passthru commands.
4470 */
4471 static int
4472 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4473 {
4474 Scsi_Cmnd *scmd;
4475 struct scsi_device *sdev;
4476 scb_t *scb;
4477 int rval;
4478
4479 /*
4480 * The internal commands share one command id and hence are
4481 * serialized. This is so because we want to reserve maximum number of
4482 * available command ids for the I/O commands.
4483 */
4484 mutex_lock(&adapter->int_mtx);
4485
4486 scb = &adapter->int_scb;
4487 memset(scb, 0, sizeof(scb_t));
4488
4489 scmd = &adapter->int_scmd;
4490 memset(scmd, 0, sizeof(Scsi_Cmnd));
4491
4492 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4493 memset(sdev, 0, sizeof(struct scsi_device));
4494 scmd->device = sdev;
4495
4496 scmd->device->host = adapter->host;
4497 scmd->request_buffer = (void *)scb;
4498 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4499
4500 scb->state |= SCB_ACTIVE;
4501 scb->cmd = scmd;
4502
4503 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4504
4505 /*
4506 * Is it a passthru command
4507 */
4508 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4509
4510 scb->pthru = pthru;
4511 }
4512
4513 scb->idx = CMDID_INT_CMDS;
4514
4515 megaraid_queue(scmd, mega_internal_done);
4516
4517 wait_for_completion(&adapter->int_waitq);
4518
4519 rval = scmd->result;
4520 mc->status = scmd->result;
4521 kfree(sdev);
4522
4523 /*
4524 * Print a debug message for all failed commands. Applications can use
4525 * this information.
4526 */
4527 if( scmd->result && trace_level ) {
4528 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4529 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4530 }
4531
4532 mutex_unlock(&adapter->int_mtx);
4533
4534 return rval;
4535 }
4536
4537
4538 /**
4539 * mega_internal_done()
4540 * @scmd - internal scsi command
4541 *
4542 * Callback routine for internal commands.
4543 */
4544 static void
4545 mega_internal_done(Scsi_Cmnd *scmd)
4546 {
4547 adapter_t *adapter;
4548
4549 adapter = (adapter_t *)scmd->device->host->hostdata;
4550
4551 complete(&adapter->int_waitq);
4552
4553 }
4554
4555
4556 static struct scsi_host_template megaraid_template = {
4557 .module = THIS_MODULE,
4558 .name = "MegaRAID",
4559 .proc_name = "megaraid_legacy",
4560 .info = megaraid_info,
4561 .queuecommand = megaraid_queue,
4562 .bios_param = megaraid_biosparam,
4563 .max_sectors = MAX_SECTORS_PER_IO,
4564 .can_queue = MAX_COMMANDS,
4565 .this_id = DEFAULT_INITIATOR_ID,
4566 .sg_tablesize = MAX_SGLIST,
4567 .cmd_per_lun = DEF_CMD_PER_LUN,
4568 .use_clustering = ENABLE_CLUSTERING,
4569 .eh_abort_handler = megaraid_abort,
4570 .eh_device_reset_handler = megaraid_reset,
4571 .eh_bus_reset_handler = megaraid_reset,
4572 .eh_host_reset_handler = megaraid_reset,
4573 };
4574
4575 static int __devinit
4576 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4577 {
4578 struct Scsi_Host *host;
4579 adapter_t *adapter;
4580 unsigned long mega_baseport, tbase, flag = 0;
4581 u16 subsysid, subsysvid;
4582 u8 pci_bus, pci_dev_func;
4583 int irq, i, j;
4584 int error = -ENODEV;
4585
4586 if (pci_enable_device(pdev))
4587 goto out;
4588 pci_set_master(pdev);
4589
4590 pci_bus = pdev->bus->number;
4591 pci_dev_func = pdev->devfn;
4592
4593 /*
4594 * The megaraid3 stuff reports the ID of the Intel part which is not
4595 * remotely specific to the megaraid
4596 */
4597 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4598 u16 magic;
4599 /*
4600 * Don't fall over the Compaq management cards using the same
4601 * PCI identifier
4602 */
4603 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4604 pdev->subsystem_device == 0xC000)
4605 return -ENODEV;
4606 /* Now check the magic signature byte */
4607 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4608 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4609 return -ENODEV;
4610 /* Ok it is probably a megaraid */
4611 }
4612
4613 /*
4614 * For these vendor and device ids, signature offsets are not
4615 * valid and 64 bit is implicit
4616 */
4617 if (id->driver_data & BOARD_64BIT)
4618 flag |= BOARD_64BIT;
4619 else {
4620 u32 magic64;
4621
4622 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4623 if (magic64 == HBA_SIGNATURE_64BIT)
4624 flag |= BOARD_64BIT;
4625 }
4626
4627 subsysvid = pdev->subsystem_vendor;
4628 subsysid = pdev->subsystem_device;
4629
4630 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4631 id->vendor, id->device, pci_bus);
4632
4633 printk("slot %d:func %d\n",
4634 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4635
4636 /* Read the base port and IRQ from PCI */
4637 mega_baseport = pci_resource_start(pdev, 0);
4638 irq = pdev->irq;
4639
4640 tbase = mega_baseport;
4641 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4642 flag |= BOARD_MEMMAP;
4643
4644 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4645 printk(KERN_WARNING "megaraid: mem region busy!\n");
4646 goto out_disable_device;
4647 }
4648
4649 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4650 if (!mega_baseport) {
4651 printk(KERN_WARNING
4652 "megaraid: could not map hba memory\n");
4653 goto out_release_region;
4654 }
4655 } else {
4656 flag |= BOARD_IOMAP;
4657 mega_baseport += 0x10;
4658
4659 if (!request_region(mega_baseport, 16, "megaraid"))
4660 goto out_disable_device;
4661 }
4662
4663 /* Initialize SCSI Host structure */
4664 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4665 if (!host)
4666 goto out_iounmap;
4667
4668 adapter = (adapter_t *)host->hostdata;
4669 memset(adapter, 0, sizeof(adapter_t));
4670
4671 printk(KERN_NOTICE
4672 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4673 host->host_no, mega_baseport, irq);
4674
4675 adapter->base = mega_baseport;
4676 if (flag & BOARD_MEMMAP)
4677 adapter->mmio_base = (void __iomem *) mega_baseport;
4678
4679 INIT_LIST_HEAD(&adapter->free_list);
4680 INIT_LIST_HEAD(&adapter->pending_list);
4681 INIT_LIST_HEAD(&adapter->completed_list);
4682
4683 adapter->flag = flag;
4684 spin_lock_init(&adapter->lock);
4685
4686 host->cmd_per_lun = max_cmd_per_lun;
4687 host->max_sectors = max_sectors_per_io;
4688
4689 adapter->dev = pdev;
4690 adapter->host = host;
4691
4692 adapter->host->irq = irq;
4693
4694 if (flag & BOARD_MEMMAP)
4695 adapter->host->base = tbase;
4696 else {
4697 adapter->host->io_port = tbase;
4698 adapter->host->n_io_port = 16;
4699 }
4700
4701 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4702
4703 /*
4704 * Allocate buffer to issue internal commands.
4705 */
4706 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4707 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4708 if (!adapter->mega_buffer) {
4709 printk(KERN_WARNING "megaraid: out of RAM.\n");
4710 goto out_host_put;
4711 }
4712
4713 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4714 if (!adapter->scb_list) {
4715 printk(KERN_WARNING "megaraid: out of RAM.\n");
4716 goto out_free_cmd_buffer;
4717 }
4718
4719 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4720 megaraid_isr_memmapped : megaraid_isr_iomapped,
4721 IRQF_SHARED, "megaraid", adapter)) {
4722 printk(KERN_WARNING
4723 "megaraid: Couldn't register IRQ %d!\n", irq);
4724 goto out_free_scb_list;
4725 }
4726
4727 if (mega_setup_mailbox(adapter))
4728 goto out_free_irq;
4729
4730 if (mega_query_adapter(adapter))
4731 goto out_free_mbox;
4732
4733 /*
4734 * Have checks for some buggy f/w
4735 */
4736 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4737 /*
4738 * Which firmware
4739 */
4740 if (!strcmp(adapter->fw_version, "3.00") ||
4741 !strcmp(adapter->fw_version, "3.01")) {
4742
4743 printk( KERN_WARNING
4744 "megaraid: Your card is a Dell PERC "
4745 "2/SC RAID controller with "
4746 "firmware\nmegaraid: 3.00 or 3.01. "
4747 "This driver is known to have "
4748 "corruption issues\nmegaraid: with "
4749 "those firmware versions on this "
4750 "specific card. In order\nmegaraid: "
4751 "to protect your data, please upgrade "
4752 "your firmware to version\nmegaraid: "
4753 "3.10 or later, available from the "
4754 "Dell Technical Support web\n"
4755 "megaraid: site at\nhttp://support."
4756 "dell.com/us/en/filelib/download/"
4757 "index.asp?fileid=2940\n"
4758 );
4759 }
4760 }
4761
4762 /*
4763 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4764 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4765 * support, since this firmware cannot handle 64 bit
4766 * addressing
4767 */
4768 if ((subsysvid == HP_SUBSYS_VID) &&
4769 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4770 /*
4771 * which firmware
4772 */
4773 if (!strcmp(adapter->fw_version, "H01.07") ||
4774 !strcmp(adapter->fw_version, "H01.08") ||
4775 !strcmp(adapter->fw_version, "H01.09") ) {
4776 printk(KERN_WARNING
4777 "megaraid: Firmware H.01.07, "
4778 "H.01.08, and H.01.09 on 1M/2M "
4779 "controllers\n"
4780 "megaraid: do not support 64 bit "
4781 "addressing.\nmegaraid: DISABLING "
4782 "64 bit support.\n");
4783 adapter->flag &= ~BOARD_64BIT;
4784 }
4785 }
4786
4787 if (mega_is_bios_enabled(adapter))
4788 mega_hbas[hba_count].is_bios_enabled = 1;
4789 mega_hbas[hba_count].hostdata_addr = adapter;
4790
4791 /*
4792 * Find out which channel is raid and which is scsi. This is
4793 * for ROMB support.
4794 */
4795 mega_enum_raid_scsi(adapter);
4796
4797 /*
4798 * Find out if a logical drive is set as the boot drive. If
4799 * there is one, will make that as the first logical drive.
4800 * ROMB: Do we have to boot from a physical drive. Then all
4801 * the physical drives would appear before the logical disks.
4802 * Else, all the physical drives would be exported to the mid
4803 * layer after logical drives.
4804 */
4805 mega_get_boot_drv(adapter);
4806
4807 if (adapter->boot_pdrv_enabled) {
4808 j = adapter->product_info.nchannels;
4809 for( i = 0; i < j; i++ )
4810 adapter->logdrv_chan[i] = 0;
4811 for( i = j; i < NVIRT_CHAN + j; i++ )
4812 adapter->logdrv_chan[i] = 1;
4813 } else {
4814 for (i = 0; i < NVIRT_CHAN; i++)
4815 adapter->logdrv_chan[i] = 1;
4816 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4817 adapter->logdrv_chan[i] = 0;
4818 adapter->mega_ch_class <<= NVIRT_CHAN;
4819 }
4820
4821 /*
4822 * Do we support random deletion and addition of logical
4823 * drives
4824 */
4825 adapter->read_ldidmap = 0; /* set it after first logdrv
4826 delete cmd */
4827 adapter->support_random_del = mega_support_random_del(adapter);
4828
4829 /* Initialize SCBs */
4830 if (mega_init_scb(adapter))
4831 goto out_free_mbox;
4832
4833 /*
4834 * Reset the pending commands counter
4835 */
4836 atomic_set(&adapter->pend_cmds, 0);
4837
4838 /*
4839 * Reset the adapter quiescent flag
4840 */
4841 atomic_set(&adapter->quiescent, 0);
4842
4843 hba_soft_state[hba_count] = adapter;
4844
4845 /*
4846 * Fill in the structure which needs to be passed back to the
4847 * application when it does an ioctl() for controller related
4848 * information.
4849 */
4850 i = hba_count;
4851
4852 mcontroller[i].base = mega_baseport;
4853 mcontroller[i].irq = irq;
4854 mcontroller[i].numldrv = adapter->numldrv;
4855 mcontroller[i].pcibus = pci_bus;
4856 mcontroller[i].pcidev = id->device;
4857 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4858 mcontroller[i].pciid = -1;
4859 mcontroller[i].pcivendor = id->vendor;
4860 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4861 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4862
4863
4864 /* Set the Mode of addressing to 64 bit if we can */
4865 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4866 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4867 adapter->has_64bit_addr = 1;
4868 } else {
4869 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4870 adapter->has_64bit_addr = 0;
4871 }
4872
4873 mutex_init(&adapter->int_mtx);
4874 init_completion(&adapter->int_waitq);
4875
4876 adapter->this_id = DEFAULT_INITIATOR_ID;
4877 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4878
4879 #if MEGA_HAVE_CLUSTERING
4880 /*
4881 * Is cluster support enabled on this controller
4882 * Note: In a cluster the HBAs ( the initiators ) will have
4883 * different target IDs and we cannot assume it to be 7. Call
4884 * to mega_support_cluster() will get the target ids also if
4885 * the cluster support is available
4886 */
4887 adapter->has_cluster = mega_support_cluster(adapter);
4888 if (adapter->has_cluster) {
4889 printk(KERN_NOTICE
4890 "megaraid: Cluster driver, initiator id:%d\n",
4891 adapter->this_id);
4892 }
4893 #endif
4894
4895 pci_set_drvdata(pdev, host);
4896
4897 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4898
4899 error = scsi_add_host(host, &pdev->dev);
4900 if (error)
4901 goto out_free_mbox;
4902
4903 scsi_scan_host(host);
4904 hba_count++;
4905 return 0;
4906
4907 out_free_mbox:
4908 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4909 adapter->una_mbox64, adapter->una_mbox64_dma);
4910 out_free_irq:
4911 free_irq(adapter->host->irq, adapter);
4912 out_free_scb_list:
4913 kfree(adapter->scb_list);
4914 out_free_cmd_buffer:
4915 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4916 adapter->mega_buffer, adapter->buf_dma_handle);
4917 out_host_put:
4918 scsi_host_put(host);
4919 out_iounmap:
4920 if (flag & BOARD_MEMMAP)
4921 iounmap((void *)mega_baseport);
4922 out_release_region:
4923 if (flag & BOARD_MEMMAP)
4924 release_mem_region(tbase, 128);
4925 else
4926 release_region(mega_baseport, 16);
4927 out_disable_device:
4928 pci_disable_device(pdev);
4929 out:
4930 return error;
4931 }
4932
4933 static void
4934 __megaraid_shutdown(adapter_t *adapter)
4935 {
4936 u_char raw_mbox[sizeof(struct mbox_out)];
4937 mbox_t *mbox = (mbox_t *)raw_mbox;
4938 int i;
4939
4940 /* Flush adapter cache */
4941 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4942 raw_mbox[0] = FLUSH_ADAPTER;
4943
4944 free_irq(adapter->host->irq, adapter);
4945
4946 /* Issue a blocking (interrupts disabled) command to the card */
4947 issue_scb_block(adapter, raw_mbox);
4948
4949 /* Flush disks cache */
4950 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4951 raw_mbox[0] = FLUSH_SYSTEM;
4952
4953 /* Issue a blocking (interrupts disabled) command to the card */
4954 issue_scb_block(adapter, raw_mbox);
4955
4956 if (atomic_read(&adapter->pend_cmds) > 0)
4957 printk(KERN_WARNING "megaraid: pending commands!!\n");
4958
4959 /*
4960 * Have a delibrate delay to make sure all the caches are
4961 * actually flushed.
4962 */
4963 for (i = 0; i <= 10; i++)
4964 mdelay(1000);
4965 }
4966
4967 static void
4968 megaraid_remove_one(struct pci_dev *pdev)
4969 {
4970 struct Scsi_Host *host = pci_get_drvdata(pdev);
4971 adapter_t *adapter = (adapter_t *)host->hostdata;
4972
4973 scsi_remove_host(host);
4974
4975 __megaraid_shutdown(adapter);
4976
4977 /* Free our resources */
4978 if (adapter->flag & BOARD_MEMMAP) {
4979 iounmap((void *)adapter->base);
4980 release_mem_region(adapter->host->base, 128);
4981 } else
4982 release_region(adapter->base, 16);
4983
4984 mega_free_sgl(adapter);
4985
4986 #ifdef CONFIG_PROC_FS
4987 if (adapter->controller_proc_dir_entry) {
4988 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4989 remove_proc_entry("config",
4990 adapter->controller_proc_dir_entry);
4991 remove_proc_entry("mailbox",
4992 adapter->controller_proc_dir_entry);
4993 #if MEGA_HAVE_ENH_PROC
4994 remove_proc_entry("rebuild-rate",
4995 adapter->controller_proc_dir_entry);
4996 remove_proc_entry("battery-status",
4997 adapter->controller_proc_dir_entry);
4998
4999 remove_proc_entry("diskdrives-ch0",
5000 adapter->controller_proc_dir_entry);
5001 remove_proc_entry("diskdrives-ch1",
5002 adapter->controller_proc_dir_entry);
5003 remove_proc_entry("diskdrives-ch2",
5004 adapter->controller_proc_dir_entry);
5005 remove_proc_entry("diskdrives-ch3",
5006 adapter->controller_proc_dir_entry);
5007
5008 remove_proc_entry("raiddrives-0-9",
5009 adapter->controller_proc_dir_entry);
5010 remove_proc_entry("raiddrives-10-19",
5011 adapter->controller_proc_dir_entry);
5012 remove_proc_entry("raiddrives-20-29",
5013 adapter->controller_proc_dir_entry);
5014 remove_proc_entry("raiddrives-30-39",
5015 adapter->controller_proc_dir_entry);
5016 #endif
5017 {
5018 char buf[12] = { 0 };
5019 sprintf(buf, "hba%d", adapter->host->host_no);
5020 remove_proc_entry(buf, mega_proc_dir_entry);
5021 }
5022 }
5023 #endif
5024
5025 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5026 adapter->mega_buffer, adapter->buf_dma_handle);
5027 kfree(adapter->scb_list);
5028 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5029 adapter->una_mbox64, adapter->una_mbox64_dma);
5030
5031 scsi_host_put(host);
5032 pci_disable_device(pdev);
5033
5034 hba_count--;
5035 }
5036
5037 static void
5038 megaraid_shutdown(struct pci_dev *pdev)
5039 {
5040 struct Scsi_Host *host = pci_get_drvdata(pdev);
5041 adapter_t *adapter = (adapter_t *)host->hostdata;
5042
5043 __megaraid_shutdown(adapter);
5044 }
5045
5046 static struct pci_device_id megaraid_pci_tbl[] = {
5047 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5048 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5049 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5050 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5051 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5052 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5053 {0,}
5054 };
5055 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5056
5057 static struct pci_driver megaraid_pci_driver = {
5058 .name = "megaraid_legacy",
5059 .id_table = megaraid_pci_tbl,
5060 .probe = megaraid_probe_one,
5061 .remove = __devexit_p(megaraid_remove_one),
5062 .shutdown = megaraid_shutdown,
5063 };
5064
5065 static int __init megaraid_init(void)
5066 {
5067 int error;
5068
5069 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5070 max_cmd_per_lun = MAX_CMD_PER_LUN;
5071 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5072 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5073
5074 #ifdef CONFIG_PROC_FS
5075 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5076 if (!mega_proc_dir_entry) {
5077 printk(KERN_WARNING
5078 "megaraid: failed to create megaraid root\n");
5079 }
5080 #endif
5081 error = pci_register_driver(&megaraid_pci_driver);
5082 if (error) {
5083 #ifdef CONFIG_PROC_FS
5084 remove_proc_entry("megaraid", &proc_root);
5085 #endif
5086 return error;
5087 }
5088
5089 /*
5090 * Register the driver as a character device, for applications
5091 * to access it for ioctls.
5092 * First argument (major) to register_chrdev implies a dynamic
5093 * major number allocation.
5094 */
5095 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5096 if (!major) {
5097 printk(KERN_WARNING
5098 "megaraid: failed to register char device\n");
5099 }
5100
5101 return 0;
5102 }
5103
5104 static void __exit megaraid_exit(void)
5105 {
5106 /*
5107 * Unregister the character device interface to the driver.
5108 */
5109 unregister_chrdev(major, "megadev_legacy");
5110
5111 pci_unregister_driver(&megaraid_pci_driver);
5112
5113 #ifdef CONFIG_PROC_FS
5114 remove_proc_entry("megaraid", &proc_root);
5115 #endif
5116 }
5117
5118 module_init(megaraid_init);
5119 module_exit(megaraid_exit);
5120
5121 /* vi: set ts=8 sw=8 tw=78: */
linux v2.6.22.y-op