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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / scsi / megaraid.c
blob5e6af482cfc6e56d98b1d79e4c9544e62ca82268
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 <<<<<<< HEAD:drivers/scsi/megaraid.c
155 outb_p(adapter->mbox_dma & 0xFF,
156 =======
157 outb(adapter->mbox_dma & 0xFF,
158 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/megaraid.c
159 adapter->host->io_port + MBOX_PORT0);
160
161 <<<<<<< HEAD:drivers/scsi/megaraid.c
162 outb_p((adapter->mbox_dma >> 8) & 0xFF,
163 =======
164 outb((adapter->mbox_dma >> 8) & 0xFF,
165 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/megaraid.c
166 adapter->host->io_port + MBOX_PORT1);
167
168 <<<<<<< HEAD:drivers/scsi/megaraid.c
169 outb_p((adapter->mbox_dma >> 16) & 0xFF,
170 =======
171 outb((adapter->mbox_dma >> 16) & 0xFF,
172 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/megaraid.c
173 adapter->host->io_port + MBOX_PORT2);
174
175 <<<<<<< HEAD:drivers/scsi/megaraid.c
176 outb_p((adapter->mbox_dma >> 24) & 0xFF,
177 =======
178 outb((adapter->mbox_dma >> 24) & 0xFF,
179 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/megaraid.c
180 adapter->host->io_port + MBOX_PORT3);
181
182 <<<<<<< HEAD:drivers/scsi/megaraid.c
183 outb_p(ENABLE_MBOX_BYTE,
184 =======
185 outb(ENABLE_MBOX_BYTE,
186 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/megaraid.c
187 adapter->host->io_port + ENABLE_MBOX_REGION);
188
189 irq_ack(adapter);
190
191 irq_enable(adapter);
192 }
193
194 return 0;
195 }
196
197
198 /*
199 * mega_query_adapter()
200 * @adapter - pointer to our soft state
201 *
202 * Issue the adapter inquiry commands to the controller and find out
203 * information and parameter about the devices attached
204 */
205 static int
206 mega_query_adapter(adapter_t *adapter)
207 {
208 dma_addr_t prod_info_dma_handle;
209 mega_inquiry3 *inquiry3;
210 u8 raw_mbox[sizeof(struct mbox_out)];
211 mbox_t *mbox;
212 int retval;
213
214 /* Initialize adapter inquiry mailbox */
215
216 mbox = (mbox_t *)raw_mbox;
217
218 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
219 memset(&mbox->m_out, 0, sizeof(raw_mbox));
220
221 /*
222 * Try to issue Inquiry3 command
223 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
224 * update enquiry3 structure
225 */
226 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
227
228 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
229
230 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
231 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
232 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
233
234 /* Issue a blocking command to the card */
235 if ((retval = issue_scb_block(adapter, raw_mbox))) {
236 /* the adapter does not support 40ld */
237
238 mraid_ext_inquiry *ext_inq;
239 mraid_inquiry *inq;
240 dma_addr_t dma_handle;
241
242 ext_inq = pci_alloc_consistent(adapter->dev,
243 sizeof(mraid_ext_inquiry), &dma_handle);
244
245 if( ext_inq == NULL ) return -1;
246
247 inq = &ext_inq->raid_inq;
248
249 mbox->m_out.xferaddr = (u32)dma_handle;
250
251 /*issue old 0x04 command to adapter */
252 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
253
254 issue_scb_block(adapter, raw_mbox);
255
256 /*
257 * update Enquiry3 and ProductInfo structures with
258 * mraid_inquiry structure
259 */
260 mega_8_to_40ld(inq, inquiry3,
261 (mega_product_info *)&adapter->product_info);
262
263 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
264 ext_inq, dma_handle);
265
266 } else { /*adapter supports 40ld */
267 adapter->flag |= BOARD_40LD;
268
269 /*
270 * get product_info, which is static information and will be
271 * unchanged
272 */
273 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
274 &adapter->product_info,
275 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
276
277 mbox->m_out.xferaddr = prod_info_dma_handle;
278
279 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
280 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
281
282 if ((retval = issue_scb_block(adapter, raw_mbox)))
283 printk(KERN_WARNING
284 "megaraid: Product_info cmd failed with error: %d\n",
285 retval);
286
287 pci_unmap_single(adapter->dev, prod_info_dma_handle,
288 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
289 }
290
291
292 /*
293 * kernel scans the channels from 0 to <= max_channel
294 */
295 adapter->host->max_channel =
296 adapter->product_info.nchannels + NVIRT_CHAN -1;
297
298 adapter->host->max_id = 16; /* max targets per channel */
299
300 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
301
302 adapter->host->cmd_per_lun = max_cmd_per_lun;
303
304 adapter->numldrv = inquiry3->num_ldrv;
305
306 adapter->max_cmds = adapter->product_info.max_commands;
307
308 if(adapter->max_cmds > MAX_COMMANDS)
309 adapter->max_cmds = MAX_COMMANDS;
310
311 adapter->host->can_queue = adapter->max_cmds - 1;
312
313 /*
314 * Get the maximum number of scatter-gather elements supported by this
315 * firmware
316 */
317 mega_get_max_sgl(adapter);
318
319 adapter->host->sg_tablesize = adapter->sglen;
320
321
322 /* use HP firmware and bios version encoding */
323 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
324 sprintf (adapter->fw_version, "%c%d%d.%d%d",
325 adapter->product_info.fw_version[2],
326 adapter->product_info.fw_version[1] >> 8,
327 adapter->product_info.fw_version[1] & 0x0f,
328 adapter->product_info.fw_version[0] >> 8,
329 adapter->product_info.fw_version[0] & 0x0f);
330 sprintf (adapter->bios_version, "%c%d%d.%d%d",
331 adapter->product_info.bios_version[2],
332 adapter->product_info.bios_version[1] >> 8,
333 adapter->product_info.bios_version[1] & 0x0f,
334 adapter->product_info.bios_version[0] >> 8,
335 adapter->product_info.bios_version[0] & 0x0f);
336 } else {
337 memcpy(adapter->fw_version,
338 (char *)adapter->product_info.fw_version, 4);
339 adapter->fw_version[4] = 0;
340
341 memcpy(adapter->bios_version,
342 (char *)adapter->product_info.bios_version, 4);
343
344 adapter->bios_version[4] = 0;
345 }
346
347 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
348 adapter->fw_version, adapter->bios_version, adapter->numldrv);
349
350 /*
351 * Do we support extended (>10 bytes) cdbs
352 */
353 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
354 if (adapter->support_ext_cdb)
355 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
356
357
358 return 0;
359 }
360
361 /**
362 * mega_runpendq()
363 * @adapter - pointer to our soft state
364 *
365 * Runs through the list of pending requests.
366 */
367 static inline void
368 mega_runpendq(adapter_t *adapter)
369 {
370 if(!list_empty(&adapter->pending_list))
371 __mega_runpendq(adapter);
372 }
373
374 /*
375 * megaraid_queue()
376 * @scmd - Issue this scsi command
377 * @done - the callback hook into the scsi mid-layer
378 *
379 * The command queuing entry point for the mid-layer.
380 */
381 static int
382 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
383 {
384 adapter_t *adapter;
385 scb_t *scb;
386 int busy=0;
387 unsigned long flags;
388
389 adapter = (adapter_t *)scmd->device->host->hostdata;
390
391 scmd->scsi_done = done;
392
393
394 /*
395 * Allocate and build a SCB request
396 * busy flag will be set if mega_build_cmd() command could not
397 * allocate scb. We will return non-zero status in that case.
398 * NOTE: scb can be null even though certain commands completed
399 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
400 * return 0 in that case.
401 */
402
403 spin_lock_irqsave(&adapter->lock, flags);
404 scb = mega_build_cmd(adapter, scmd, &busy);
405 if (!scb)
406 goto out;
407
408 scb->state |= SCB_PENDQ;
409 list_add_tail(&scb->list, &adapter->pending_list);
410
411 /*
412 * Check if the HBA is in quiescent state, e.g., during a
413 * delete logical drive opertion. If it is, don't run
414 * the pending_list.
415 */
416 if (atomic_read(&adapter->quiescent) == 0)
417 mega_runpendq(adapter);
418
419 busy = 0;
420 out:
421 spin_unlock_irqrestore(&adapter->lock, flags);
422 return busy;
423 }
424
425 /**
426 * mega_allocate_scb()
427 * @adapter - pointer to our soft state
428 * @cmd - scsi command from the mid-layer
429 *
430 * Allocate a SCB structure. This is the central structure for controller
431 * commands.
432 */
433 static inline scb_t *
434 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
435 {
436 struct list_head *head = &adapter->free_list;
437 scb_t *scb;
438
439 /* Unlink command from Free List */
440 if( !list_empty(head) ) {
441
442 scb = list_entry(head->next, scb_t, list);
443
444 list_del_init(head->next);
445
446 scb->state = SCB_ACTIVE;
447 scb->cmd = cmd;
448 scb->dma_type = MEGA_DMA_TYPE_NONE;
449
450 return scb;
451 }
452
453 return NULL;
454 }
455
456 /**
457 * mega_get_ldrv_num()
458 * @adapter - pointer to our soft state
459 * @cmd - scsi mid layer command
460 * @channel - channel on the controller
461 *
462 * Calculate the logical drive number based on the information in scsi command
463 * and the channel number.
464 */
465 static inline int
466 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
467 {
468 int tgt;
469 int ldrv_num;
470
471 tgt = cmd->device->id;
472
473 if ( tgt > adapter->this_id )
474 tgt--; /* we do not get inquires for initiator id */
475
476 ldrv_num = (channel * 15) + tgt;
477
478
479 /*
480 * If we have a logical drive with boot enabled, project it first
481 */
482 if( adapter->boot_ldrv_enabled ) {
483 if( ldrv_num == 0 ) {
484 ldrv_num = adapter->boot_ldrv;
485 }
486 else {
487 if( ldrv_num <= adapter->boot_ldrv ) {
488 ldrv_num--;
489 }
490 }
491 }
492
493 /*
494 * If "delete logical drive" feature is enabled on this controller.
495 * Do only if at least one delete logical drive operation was done.
496 *
497 * Also, after logical drive deletion, instead of logical drive number,
498 * the value returned should be 0x80+logical drive id.
499 *
500 * These is valid only for IO commands.
501 */
502
503 if (adapter->support_random_del && adapter->read_ldidmap )
504 switch (cmd->cmnd[0]) {
505 case READ_6: /* fall through */
506 case WRITE_6: /* fall through */
507 case READ_10: /* fall through */
508 case WRITE_10:
509 ldrv_num += 0x80;
510 }
511
512 return ldrv_num;
513 }
514
515 /**
516 * mega_build_cmd()
517 * @adapter - pointer to our soft state
518 * @cmd - Prepare using this scsi command
519 * @busy - busy flag if no resources
520 *
521 * Prepares a command and scatter gather list for the controller. This routine
522 * also finds out if the commands is intended for a logical drive or a
523 * physical device and prepares the controller command accordingly.
524 *
525 * We also re-order the logical drives and physical devices based on their
526 * boot settings.
527 */
528 static scb_t *
529 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
530 {
531 mega_ext_passthru *epthru;
532 mega_passthru *pthru;
533 scb_t *scb;
534 mbox_t *mbox;
535 long seg;
536 char islogical;
537 int max_ldrv_num;
538 int channel = 0;
539 int target = 0;
540 int ldrv_num = 0; /* logical drive number */
541
542
543 /*
544 * filter the internal and ioctl commands
545 */
546 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
547 return (scb_t *)cmd->host_scribble;
548
549 /*
550 * We know what channels our logical drives are on - mega_find_card()
551 */
552 islogical = adapter->logdrv_chan[cmd->device->channel];
553
554 /*
555 * The theory: If physical drive is chosen for boot, all the physical
556 * devices are exported before the logical drives, otherwise physical
557 * devices are pushed after logical drives, in which case - Kernel sees
558 * the physical devices on virtual channel which is obviously converted
559 * to actual channel on the HBA.
560 */
561 if( adapter->boot_pdrv_enabled ) {
562 if( islogical ) {
563 /* logical channel */
564 channel = cmd->device->channel -
565 adapter->product_info.nchannels;
566 }
567 else {
568 /* this is physical channel */
569 channel = cmd->device->channel;
570 target = cmd->device->id;
571
572 /*
573 * boot from a physical disk, that disk needs to be
574 * exposed first IF both the channels are SCSI, then
575 * booting from the second channel is not allowed.
576 */
577 if( target == 0 ) {
578 target = adapter->boot_pdrv_tgt;
579 }
580 else if( target == adapter->boot_pdrv_tgt ) {
581 target = 0;
582 }
583 }
584 }
585 else {
586 if( islogical ) {
587 /* this is the logical channel */
588 channel = cmd->device->channel;
589 }
590 else {
591 /* physical channel */
592 channel = cmd->device->channel - NVIRT_CHAN;
593 target = cmd->device->id;
594 }
595 }
596
597
598 if(islogical) {
599
600 /* have just LUN 0 for each target on virtual channels */
601 if (cmd->device->lun) {
602 cmd->result = (DID_BAD_TARGET << 16);
603 cmd->scsi_done(cmd);
604 return NULL;
605 }
606
607 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
608
609
610 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
611 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
612
613 /*
614 * max_ldrv_num increases by 0x80 if some logical drive was
615 * deleted.
616 */
617 if(adapter->read_ldidmap)
618 max_ldrv_num += 0x80;
619
620 if(ldrv_num > max_ldrv_num ) {
621 cmd->result = (DID_BAD_TARGET << 16);
622 cmd->scsi_done(cmd);
623 return NULL;
624 }
625
626 }
627 else {
628 if( cmd->device->lun > 7) {
629 /*
630 * Do not support lun >7 for physically accessed
631 * devices
632 */
633 cmd->result = (DID_BAD_TARGET << 16);
634 cmd->scsi_done(cmd);
635 return NULL;
636 }
637 }
638
639 /*
640 *
641 * Logical drive commands
642 *
643 */
644 if(islogical) {
645 switch (cmd->cmnd[0]) {
646 case TEST_UNIT_READY:
647 #if MEGA_HAVE_CLUSTERING
648 /*
649 * Do we support clustering and is the support enabled
650 * If no, return success always
651 */
652 if( !adapter->has_cluster ) {
653 cmd->result = (DID_OK << 16);
654 cmd->scsi_done(cmd);
655 return NULL;
656 }
657
658 if(!(scb = mega_allocate_scb(adapter, cmd))) {
659 *busy = 1;
660 return NULL;
661 }
662
663 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
664 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
665 scb->raw_mbox[3] = ldrv_num;
666
667 scb->dma_direction = PCI_DMA_NONE;
668
669 return scb;
670 #else
671 cmd->result = (DID_OK << 16);
672 cmd->scsi_done(cmd);
673 return NULL;
674 #endif
675
676 case MODE_SENSE: {
677 char *buf;
678 struct scatterlist *sg;
679
680 sg = scsi_sglist(cmd);
681 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
682
683 memset(buf, 0, cmd->cmnd[4]);
684 kunmap_atomic(buf - sg->offset, KM_IRQ0);
685
686 cmd->result = (DID_OK << 16);
687 cmd->scsi_done(cmd);
688 return NULL;
689 }
690
691 case READ_CAPACITY:
692 case INQUIRY:
693
694 if(!(adapter->flag & (1L << cmd->device->channel))) {
695
696 printk(KERN_NOTICE
697 "scsi%d: scanning scsi channel %d ",
698 adapter->host->host_no,
699 cmd->device->channel);
700 printk("for logical drives.\n");
701
702 adapter->flag |= (1L << cmd->device->channel);
703 }
704
705 /* Allocate a SCB and initialize passthru */
706 if(!(scb = mega_allocate_scb(adapter, cmd))) {
707 *busy = 1;
708 return NULL;
709 }
710 pthru = scb->pthru;
711
712 mbox = (mbox_t *)scb->raw_mbox;
713 memset(mbox, 0, sizeof(scb->raw_mbox));
714 memset(pthru, 0, sizeof(mega_passthru));
715
716 pthru->timeout = 0;
717 pthru->ars = 1;
718 pthru->reqsenselen = 14;
719 pthru->islogical = 1;
720 pthru->logdrv = ldrv_num;
721 pthru->cdblen = cmd->cmd_len;
722 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
723
724 if( adapter->has_64bit_addr ) {
725 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
726 }
727 else {
728 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
729 }
730
731 scb->dma_direction = PCI_DMA_FROMDEVICE;
732
733 pthru->numsgelements = mega_build_sglist(adapter, scb,
734 &pthru->dataxferaddr, &pthru->dataxferlen);
735
736 mbox->m_out.xferaddr = scb->pthru_dma_addr;
737
738 return scb;
739
740 case READ_6:
741 case WRITE_6:
742 case READ_10:
743 case WRITE_10:
744 case READ_12:
745 case WRITE_12:
746
747 /* Allocate a SCB and initialize mailbox */
748 if(!(scb = mega_allocate_scb(adapter, cmd))) {
749 *busy = 1;
750 return NULL;
751 }
752 mbox = (mbox_t *)scb->raw_mbox;
753
754 memset(mbox, 0, sizeof(scb->raw_mbox));
755 mbox->m_out.logdrv = ldrv_num;
756
757 /*
758 * A little hack: 2nd bit is zero for all scsi read
759 * commands and is set for all scsi write commands
760 */
761 if( adapter->has_64bit_addr ) {
762 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
763 MEGA_MBOXCMD_LWRITE64:
764 MEGA_MBOXCMD_LREAD64 ;
765 }
766 else {
767 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
768 MEGA_MBOXCMD_LWRITE:
769 MEGA_MBOXCMD_LREAD ;
770 }
771
772 /*
773 * 6-byte READ(0x08) or WRITE(0x0A) cdb
774 */
775 if( cmd->cmd_len == 6 ) {
776 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
777 mbox->m_out.lba =
778 ((u32)cmd->cmnd[1] << 16) |
779 ((u32)cmd->cmnd[2] << 8) |
780 (u32)cmd->cmnd[3];
781
782 mbox->m_out.lba &= 0x1FFFFF;
783
784 #if MEGA_HAVE_STATS
785 /*
786 * Take modulo 0x80, since the logical drive
787 * number increases by 0x80 when a logical
788 * drive was deleted
789 */
790 if (*cmd->cmnd == READ_6) {
791 adapter->nreads[ldrv_num%0x80]++;
792 adapter->nreadblocks[ldrv_num%0x80] +=
793 mbox->m_out.numsectors;
794 } else {
795 adapter->nwrites[ldrv_num%0x80]++;
796 adapter->nwriteblocks[ldrv_num%0x80] +=
797 mbox->m_out.numsectors;
798 }
799 #endif
800 }
801
802 /*
803 * 10-byte READ(0x28) or WRITE(0x2A) cdb
804 */
805 if( cmd->cmd_len == 10 ) {
806 mbox->m_out.numsectors =
807 (u32)cmd->cmnd[8] |
808 ((u32)cmd->cmnd[7] << 8);
809 mbox->m_out.lba =
810 ((u32)cmd->cmnd[2] << 24) |
811 ((u32)cmd->cmnd[3] << 16) |
812 ((u32)cmd->cmnd[4] << 8) |
813 (u32)cmd->cmnd[5];
814
815 #if MEGA_HAVE_STATS
816 if (*cmd->cmnd == READ_10) {
817 adapter->nreads[ldrv_num%0x80]++;
818 adapter->nreadblocks[ldrv_num%0x80] +=
819 mbox->m_out.numsectors;
820 } else {
821 adapter->nwrites[ldrv_num%0x80]++;
822 adapter->nwriteblocks[ldrv_num%0x80] +=
823 mbox->m_out.numsectors;
824 }
825 #endif
826 }
827
828 /*
829 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
830 */
831 if( cmd->cmd_len == 12 ) {
832 mbox->m_out.lba =
833 ((u32)cmd->cmnd[2] << 24) |
834 ((u32)cmd->cmnd[3] << 16) |
835 ((u32)cmd->cmnd[4] << 8) |
836 (u32)cmd->cmnd[5];
837
838 mbox->m_out.numsectors =
839 ((u32)cmd->cmnd[6] << 24) |
840 ((u32)cmd->cmnd[7] << 16) |
841 ((u32)cmd->cmnd[8] << 8) |
842 (u32)cmd->cmnd[9];
843
844 #if MEGA_HAVE_STATS
845 if (*cmd->cmnd == READ_12) {
846 adapter->nreads[ldrv_num%0x80]++;
847 adapter->nreadblocks[ldrv_num%0x80] +=
848 mbox->m_out.numsectors;
849 } else {
850 adapter->nwrites[ldrv_num%0x80]++;
851 adapter->nwriteblocks[ldrv_num%0x80] +=
852 mbox->m_out.numsectors;
853 }
854 #endif
855 }
856
857 /*
858 * If it is a read command
859 */
860 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
861 scb->dma_direction = PCI_DMA_FROMDEVICE;
862 }
863 else {
864 scb->dma_direction = PCI_DMA_TODEVICE;
865 }
866
867 /* Calculate Scatter-Gather info */
868 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
869 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
870
871 return scb;
872
873 #if MEGA_HAVE_CLUSTERING
874 case RESERVE: /* Fall through */
875 case RELEASE:
876
877 /*
878 * Do we support clustering and is the support enabled
879 */
880 if( ! adapter->has_cluster ) {
881
882 cmd->result = (DID_BAD_TARGET << 16);
883 cmd->scsi_done(cmd);
884 return NULL;
885 }
886
887 /* Allocate a SCB and initialize mailbox */
888 if(!(scb = mega_allocate_scb(adapter, cmd))) {
889 *busy = 1;
890 return NULL;
891 }
892
893 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
894 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
895 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
896
897 scb->raw_mbox[3] = ldrv_num;
898
899 scb->dma_direction = PCI_DMA_NONE;
900
901 return scb;
902 #endif
903
904 default:
905 cmd->result = (DID_BAD_TARGET << 16);
906 cmd->scsi_done(cmd);
907 return NULL;
908 }
909 }
910
911 /*
912 * Passthru drive commands
913 */
914 else {
915 /* Allocate a SCB and initialize passthru */
916 if(!(scb = mega_allocate_scb(adapter, cmd))) {
917 *busy = 1;
918 return NULL;
919 }
920
921 mbox = (mbox_t *)scb->raw_mbox;
922 memset(mbox, 0, sizeof(scb->raw_mbox));
923
924 if( adapter->support_ext_cdb ) {
925
926 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
927 channel, target);
928
929 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
930
931 mbox->m_out.xferaddr = scb->epthru_dma_addr;
932
933 }
934 else {
935
936 pthru = mega_prepare_passthru(adapter, scb, cmd,
937 channel, target);
938
939 /* Initialize mailbox */
940 if( adapter->has_64bit_addr ) {
941 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
942 }
943 else {
944 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
945 }
946
947 mbox->m_out.xferaddr = scb->pthru_dma_addr;
948
949 }
950 return scb;
951 }
952 return NULL;
953 }
954
955
956 /**
957 * mega_prepare_passthru()
958 * @adapter - pointer to our soft state
959 * @scb - our scsi control block
960 * @cmd - scsi command from the mid-layer
961 * @channel - actual channel on the controller
962 * @target - actual id on the controller.
963 *
964 * prepare a command for the scsi physical devices.
965 */
966 static mega_passthru *
967 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
968 int channel, int target)
969 {
970 mega_passthru *pthru;
971
972 pthru = scb->pthru;
973 memset(pthru, 0, sizeof (mega_passthru));
974
975 /* 0=6sec/1=60sec/2=10min/3=3hrs */
976 pthru->timeout = 2;
977
978 pthru->ars = 1;
979 pthru->reqsenselen = 14;
980 pthru->islogical = 0;
981
982 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
983
984 pthru->target = (adapter->flag & BOARD_40LD) ?
985 (channel << 4) | target : target;
986
987 pthru->cdblen = cmd->cmd_len;
988 pthru->logdrv = cmd->device->lun;
989
990 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
991
992 /* Not sure about the direction */
993 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
994
995 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
996 switch (cmd->cmnd[0]) {
997 case INQUIRY:
998 case READ_CAPACITY:
999 if(!(adapter->flag & (1L << cmd->device->channel))) {
1000
1001 printk(KERN_NOTICE
1002 "scsi%d: scanning scsi channel %d [P%d] ",
1003 adapter->host->host_no,
1004 cmd->device->channel, channel);
1005 printk("for physical devices.\n");
1006
1007 adapter->flag |= (1L << cmd->device->channel);
1008 }
1009 /* Fall through */
1010 default:
1011 pthru->numsgelements = mega_build_sglist(adapter, scb,
1012 &pthru->dataxferaddr, &pthru->dataxferlen);
1013 break;
1014 }
1015 return pthru;
1016 }
1017
1018
1019 /**
1020 * mega_prepare_extpassthru()
1021 * @adapter - pointer to our soft state
1022 * @scb - our scsi control block
1023 * @cmd - scsi command from the mid-layer
1024 * @channel - actual channel on the controller
1025 * @target - actual id on the controller.
1026 *
1027 * prepare a command for the scsi physical devices. This rountine prepares
1028 * commands for devices which can take extended CDBs (>10 bytes)
1029 */
1030 static mega_ext_passthru *
1031 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1032 int channel, int target)
1033 {
1034 mega_ext_passthru *epthru;
1035
1036 epthru = scb->epthru;
1037 memset(epthru, 0, sizeof(mega_ext_passthru));
1038
1039 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1040 epthru->timeout = 2;
1041
1042 epthru->ars = 1;
1043 epthru->reqsenselen = 14;
1044 epthru->islogical = 0;
1045
1046 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1047 epthru->target = (adapter->flag & BOARD_40LD) ?
1048 (channel << 4) | target : target;
1049
1050 epthru->cdblen = cmd->cmd_len;
1051 epthru->logdrv = cmd->device->lun;
1052
1053 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1054
1055 /* Not sure about the direction */
1056 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1057
1058 switch(cmd->cmnd[0]) {
1059 case INQUIRY:
1060 case READ_CAPACITY:
1061 if(!(adapter->flag & (1L << cmd->device->channel))) {
1062
1063 printk(KERN_NOTICE
1064 "scsi%d: scanning scsi channel %d [P%d] ",
1065 adapter->host->host_no,
1066 cmd->device->channel, channel);
1067 printk("for physical devices.\n");
1068
1069 adapter->flag |= (1L << cmd->device->channel);
1070 }
1071 /* Fall through */
1072 default:
1073 epthru->numsgelements = mega_build_sglist(adapter, scb,
1074 &epthru->dataxferaddr, &epthru->dataxferlen);
1075 break;
1076 }
1077
1078 return epthru;
1079 }
1080
1081 static void
1082 __mega_runpendq(adapter_t *adapter)
1083 {
1084 scb_t *scb;
1085 struct list_head *pos, *next;
1086
1087 /* Issue any pending commands to the card */
1088 list_for_each_safe(pos, next, &adapter->pending_list) {
1089
1090 scb = list_entry(pos, scb_t, list);
1091
1092 if( !(scb->state & SCB_ISSUED) ) {
1093
1094 if( issue_scb(adapter, scb) != 0 )
1095 return;
1096 }
1097 }
1098
1099 return;
1100 }
1101
1102
1103 /**
1104 * issue_scb()
1105 * @adapter - pointer to our soft state
1106 * @scb - scsi control block
1107 *
1108 * Post a command to the card if the mailbox is available, otherwise return
1109 * busy. We also take the scb from the pending list if the mailbox is
1110 * available.
1111 */
1112 static int
1113 issue_scb(adapter_t *adapter, scb_t *scb)
1114 {
1115 volatile mbox64_t *mbox64 = adapter->mbox64;
1116 volatile mbox_t *mbox = adapter->mbox;
1117 unsigned int i = 0;
1118
1119 if(unlikely(mbox->m_in.busy)) {
1120 do {
1121 udelay(1);
1122 i++;
1123 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1124
1125 if(mbox->m_in.busy) return -1;
1126 }
1127
1128 /* Copy mailbox data into host structure */
1129 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1130 sizeof(struct mbox_out));
1131
1132 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1133 mbox->m_in.busy = 1; /* Set busy */
1134
1135
1136 /*
1137 * Increment the pending queue counter
1138 */
1139 atomic_inc(&adapter->pend_cmds);
1140
1141 switch (mbox->m_out.cmd) {
1142 case MEGA_MBOXCMD_LREAD64:
1143 case MEGA_MBOXCMD_LWRITE64:
1144 case MEGA_MBOXCMD_PASSTHRU64:
1145 case MEGA_MBOXCMD_EXTPTHRU:
1146 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1147 mbox64->xfer_segment_hi = 0;
1148 mbox->m_out.xferaddr = 0xFFFFFFFF;
1149 break;
1150 default:
1151 mbox64->xfer_segment_lo = 0;
1152 mbox64->xfer_segment_hi = 0;
1153 }
1154
1155 /*
1156 * post the command
1157 */
1158 scb->state |= SCB_ISSUED;
1159
1160 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1161 mbox->m_in.poll = 0;
1162 mbox->m_in.ack = 0;
1163 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1164 }
1165 else {
1166 irq_enable(adapter);
1167 issue_command(adapter);
1168 }
1169
1170 return 0;
1171 }
1172
1173 /*
1174 * Wait until the controller's mailbox is available
1175 */
1176 static inline int
1177 mega_busywait_mbox (adapter_t *adapter)
1178 {
1179 if (adapter->mbox->m_in.busy)
1180 return __mega_busywait_mbox(adapter);
1181 return 0;
1182 }
1183
1184 /**
1185 * issue_scb_block()
1186 * @adapter - pointer to our soft state
1187 * @raw_mbox - the mailbox
1188 *
1189 * Issue a scb in synchronous and non-interrupt mode
1190 */
1191 static int
1192 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1193 {
1194 volatile mbox64_t *mbox64 = adapter->mbox64;
1195 volatile mbox_t *mbox = adapter->mbox;
1196 u8 byte;
1197
1198 /* Wait until mailbox is free */
1199 if(mega_busywait_mbox (adapter))
1200 goto bug_blocked_mailbox;
1201
1202 /* Copy mailbox data into host structure */
1203 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1204 mbox->m_out.cmdid = 0xFE;
1205 mbox->m_in.busy = 1;
1206
1207 switch (raw_mbox[0]) {
1208 case MEGA_MBOXCMD_LREAD64:
1209 case MEGA_MBOXCMD_LWRITE64:
1210 case MEGA_MBOXCMD_PASSTHRU64:
1211 case MEGA_MBOXCMD_EXTPTHRU:
1212 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1213 mbox64->xfer_segment_hi = 0;
1214 mbox->m_out.xferaddr = 0xFFFFFFFF;
1215 break;
1216 default:
1217 mbox64->xfer_segment_lo = 0;
1218 mbox64->xfer_segment_hi = 0;
1219 }
1220
1221 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1222 mbox->m_in.poll = 0;
1223 mbox->m_in.ack = 0;
1224 mbox->m_in.numstatus = 0xFF;
1225 mbox->m_in.status = 0xFF;
1226 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1227
1228 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1229 cpu_relax();
1230
1231 mbox->m_in.numstatus = 0xFF;
1232
1233 while( (volatile u8)mbox->m_in.poll != 0x77 )
1234 cpu_relax();
1235
1236 mbox->m_in.poll = 0;
1237 mbox->m_in.ack = 0x77;
1238
1239 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1240
1241 while(RDINDOOR(adapter) & 0x2)
1242 cpu_relax();
1243 }
1244 else {
1245 irq_disable(adapter);
1246 issue_command(adapter);
1247
1248 while (!((byte = irq_state(adapter)) & INTR_VALID))
1249 cpu_relax();
1250
1251 set_irq_state(adapter, byte);
1252 irq_enable(adapter);
1253 irq_ack(adapter);
1254 }
1255
1256 return mbox->m_in.status;
1257
1258 bug_blocked_mailbox:
1259 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1260 udelay (1000);
1261 return -1;
1262 }
1263
1264
1265 /**
1266 * megaraid_isr_iomapped()
1267 * @irq - irq
1268 * @devp - pointer to our soft state
1269 *
1270 * Interrupt service routine for io-mapped controllers.
1271 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1272 * and service the completed commands.
1273 */
1274 static irqreturn_t
1275 megaraid_isr_iomapped(int irq, void *devp)
1276 {
1277 adapter_t *adapter = devp;
1278 unsigned long flags;
1279 u8 status;
1280 u8 nstatus;
1281 u8 completed[MAX_FIRMWARE_STATUS];
1282 u8 byte;
1283 int handled = 0;
1284
1285
1286 /*
1287 * loop till F/W has more commands for us to complete.
1288 */
1289 spin_lock_irqsave(&adapter->lock, flags);
1290
1291 do {
1292 /* Check if a valid interrupt is pending */
1293 byte = irq_state(adapter);
1294 if( (byte & VALID_INTR_BYTE) == 0 ) {
1295 /*
1296 * No more pending commands
1297 */
1298 goto out_unlock;
1299 }
1300 set_irq_state(adapter, byte);
1301
1302 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1303 == 0xFF)
1304 cpu_relax();
1305 adapter->mbox->m_in.numstatus = 0xFF;
1306
1307 status = adapter->mbox->m_in.status;
1308
1309 /*
1310 * decrement the pending queue counter
1311 */
1312 atomic_sub(nstatus, &adapter->pend_cmds);
1313
1314 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1315 nstatus);
1316
1317 /* Acknowledge interrupt */
1318 irq_ack(adapter);
1319
1320 mega_cmd_done(adapter, completed, nstatus, status);
1321
1322 mega_rundoneq(adapter);
1323
1324 handled = 1;
1325
1326 /* Loop through any pending requests */
1327 if(atomic_read(&adapter->quiescent) == 0) {
1328 mega_runpendq(adapter);
1329 }
1330
1331 } while(1);
1332
1333 out_unlock:
1334
1335 spin_unlock_irqrestore(&adapter->lock, flags);
1336
1337 return IRQ_RETVAL(handled);
1338 }
1339
1340
1341 /**
1342 * megaraid_isr_memmapped()
1343 * @irq - irq
1344 * @devp - pointer to our soft state
1345 *
1346 * Interrupt service routine for memory-mapped controllers.
1347 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1348 * and service the completed commands.
1349 */
1350 static irqreturn_t
1351 megaraid_isr_memmapped(int irq, void *devp)
1352 {
1353 adapter_t *adapter = devp;
1354 unsigned long flags;
1355 u8 status;
1356 u32 dword = 0;
1357 u8 nstatus;
1358 u8 completed[MAX_FIRMWARE_STATUS];
1359 int handled = 0;
1360
1361
1362 /*
1363 * loop till F/W has more commands for us to complete.
1364 */
1365 spin_lock_irqsave(&adapter->lock, flags);
1366
1367 do {
1368 /* Check if a valid interrupt is pending */
1369 dword = RDOUTDOOR(adapter);
1370 if(dword != 0x10001234) {
1371 /*
1372 * No more pending commands
1373 */
1374 goto out_unlock;
1375 }
1376 WROUTDOOR(adapter, 0x10001234);
1377
1378 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1379 == 0xFF) {
1380 cpu_relax();
1381 }
1382 adapter->mbox->m_in.numstatus = 0xFF;
1383
1384 status = adapter->mbox->m_in.status;
1385
1386 /*
1387 * decrement the pending queue counter
1388 */
1389 atomic_sub(nstatus, &adapter->pend_cmds);
1390
1391 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1392 nstatus);
1393
1394 /* Acknowledge interrupt */
1395 WRINDOOR(adapter, 0x2);
1396
1397 handled = 1;
1398
1399 while( RDINDOOR(adapter) & 0x02 )
1400 cpu_relax();
1401
1402 mega_cmd_done(adapter, completed, nstatus, status);
1403
1404 mega_rundoneq(adapter);
1405
1406 /* Loop through any pending requests */
1407 if(atomic_read(&adapter->quiescent) == 0) {
1408 mega_runpendq(adapter);
1409 }
1410
1411 } while(1);
1412
1413 out_unlock:
1414
1415 spin_unlock_irqrestore(&adapter->lock, flags);
1416
1417 return IRQ_RETVAL(handled);
1418 }
1419 /**
1420 * mega_cmd_done()
1421 * @adapter - pointer to our soft state
1422 * @completed - array of ids of completed commands
1423 * @nstatus - number of completed commands
1424 * @status - status of the last command completed
1425 *
1426 * Complete the comamnds and call the scsi mid-layer callback hooks.
1427 */
1428 static void
1429 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1430 {
1431 mega_ext_passthru *epthru = NULL;
1432 struct scatterlist *sgl;
1433 Scsi_Cmnd *cmd = NULL;
1434 mega_passthru *pthru = NULL;
1435 mbox_t *mbox = NULL;
1436 u8 c;
1437 scb_t *scb;
1438 int islogical;
1439 int cmdid;
1440 int i;
1441
1442 /*
1443 * for all the commands completed, call the mid-layer callback routine
1444 * and free the scb.
1445 */
1446 for( i = 0; i < nstatus; i++ ) {
1447
1448 cmdid = completed[i];
1449
1450 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1451 scb = &adapter->int_scb;
1452 cmd = scb->cmd;
1453 mbox = (mbox_t *)scb->raw_mbox;
1454
1455 /*
1456 * Internal command interface do not fire the extended
1457 * passthru or 64-bit passthru
1458 */
1459 pthru = scb->pthru;
1460
1461 }
1462 else {
1463 scb = &adapter->scb_list[cmdid];
1464
1465 /*
1466 * Make sure f/w has completed a valid command
1467 */
1468 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1469 printk(KERN_CRIT
1470 "megaraid: invalid command ");
1471 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1472 cmdid, scb->state, scb->cmd);
1473
1474 continue;
1475 }
1476
1477 /*
1478 * Was a abort issued for this command
1479 */
1480 if( scb->state & SCB_ABORT ) {
1481
1482 printk(KERN_WARNING
1483 "megaraid: aborted cmd %lx[%x] complete.\n",
1484 scb->cmd->serial_number, scb->idx);
1485
1486 scb->cmd->result = (DID_ABORT << 16);
1487
1488 list_add_tail(SCSI_LIST(scb->cmd),
1489 &adapter->completed_list);
1490
1491 mega_free_scb(adapter, scb);
1492
1493 continue;
1494 }
1495
1496 /*
1497 * Was a reset issued for this command
1498 */
1499 if( scb->state & SCB_RESET ) {
1500
1501 printk(KERN_WARNING
1502 "megaraid: reset cmd %lx[%x] complete.\n",
1503 scb->cmd->serial_number, scb->idx);
1504
1505 scb->cmd->result = (DID_RESET << 16);
1506
1507 list_add_tail(SCSI_LIST(scb->cmd),
1508 &adapter->completed_list);
1509
1510 mega_free_scb (adapter, scb);
1511
1512 continue;
1513 }
1514
1515 cmd = scb->cmd;
1516 pthru = scb->pthru;
1517 epthru = scb->epthru;
1518 mbox = (mbox_t *)scb->raw_mbox;
1519
1520 #if MEGA_HAVE_STATS
1521 {
1522
1523 int logdrv = mbox->m_out.logdrv;
1524
1525 islogical = adapter->logdrv_chan[cmd->channel];
1526 /*
1527 * Maintain an error counter for the logical drive.
1528 * Some application like SNMP agent need such
1529 * statistics
1530 */
1531 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1532 cmd->cmnd[0] == READ_10 ||
1533 cmd->cmnd[0] == READ_12)) {
1534 /*
1535 * Logical drive number increases by 0x80 when
1536 * a logical drive is deleted
1537 */
1538 adapter->rd_errors[logdrv%0x80]++;
1539 }
1540
1541 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1542 cmd->cmnd[0] == WRITE_10 ||
1543 cmd->cmnd[0] == WRITE_12)) {
1544 /*
1545 * Logical drive number increases by 0x80 when
1546 * a logical drive is deleted
1547 */
1548 adapter->wr_errors[logdrv%0x80]++;
1549 }
1550
1551 }
1552 #endif
1553 }
1554
1555 /*
1556 * Do not return the presence of hard disk on the channel so,
1557 * inquiry sent, and returned data==hard disk or removable
1558 * hard disk and not logical, request should return failure! -
1559 * PJ
1560 */
1561 islogical = adapter->logdrv_chan[cmd->device->channel];
1562 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1563
1564 sgl = scsi_sglist(cmd);
1565 if( sg_page(sgl) ) {
1566 c = *(unsigned char *) sg_virt(&sgl[0]);
1567 } else {
1568 printk(KERN_WARNING
1569 "megaraid: invalid sg.\n");
1570 c = 0;
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 switch( scb->dma_type ) {
1708
1709 case MEGA_DMA_TYPE_NONE:
1710 break;
1711
1712 case MEGA_SGLIST:
1713 scsi_dma_unmap(scb->cmd);
1714 break;
1715 default:
1716 break;
1717 }
1718
1719 /*
1720 * Remove from the pending list
1721 */
1722 list_del_init(&scb->list);
1723
1724 /* Link the scb back into free list */
1725 scb->state = SCB_FREE;
1726 scb->cmd = NULL;
1727
1728 list_add(&scb->list, &adapter->free_list);
1729 }
1730
1731
1732 static int
1733 __mega_busywait_mbox (adapter_t *adapter)
1734 {
1735 volatile mbox_t *mbox = adapter->mbox;
1736 long counter;
1737
1738 for (counter = 0; counter < 10000; counter++) {
1739 if (!mbox->m_in.busy)
1740 return 0;
1741 udelay(100);
1742 cond_resched();
1743 }
1744 return -1; /* give up after 1 second */
1745 }
1746
1747 /*
1748 * Copies data to SGLIST
1749 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1750 */
1751 static int
1752 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1753 {
1754 struct scatterlist *sg;
1755 Scsi_Cmnd *cmd;
1756 int sgcnt;
1757 int idx;
1758
1759 cmd = scb->cmd;
1760
1761 /*
1762 * Copy Scatter-Gather list info into controller structure.
1763 *
1764 * The number of sg elements returned must not exceed our limit
1765 */
1766 sgcnt = scsi_dma_map(cmd);
1767
1768 scb->dma_type = MEGA_SGLIST;
1769
1770 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1771
1772 *len = 0;
1773
1774 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1775 sg = scsi_sglist(cmd);
1776 scb->dma_h_bulkdata = sg_dma_address(sg);
1777 *buf = (u32)scb->dma_h_bulkdata;
1778 *len = sg_dma_len(sg);
1779 return 0;
1780 }
1781
1782 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1783 if (adapter->has_64bit_addr) {
1784 scb->sgl64[idx].address = sg_dma_address(sg);
1785 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1786 } else {
1787 scb->sgl[idx].address = sg_dma_address(sg);
1788 *len += scb->sgl[idx].length = sg_dma_len(sg);
1789 }
1790 }
1791
1792 /* Reset pointer and length fields */
1793 *buf = scb->sgl_dma_addr;
1794
1795 /* Return count of SG requests */
1796 return sgcnt;
1797 }
1798
1799
1800 /*
1801 * mega_8_to_40ld()
1802 *
1803 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1804 * Enquiry3 structures for later use
1805 */
1806 static void
1807 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1808 mega_product_info *product_info)
1809 {
1810 int i;
1811
1812 product_info->max_commands = inquiry->adapter_info.max_commands;
1813 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1814 product_info->nchannels = inquiry->adapter_info.nchannels;
1815
1816 for (i = 0; i < 4; i++) {
1817 product_info->fw_version[i] =
1818 inquiry->adapter_info.fw_version[i];
1819
1820 product_info->bios_version[i] =
1821 inquiry->adapter_info.bios_version[i];
1822 }
1823 enquiry3->cache_flush_interval =
1824 inquiry->adapter_info.cache_flush_interval;
1825
1826 product_info->dram_size = inquiry->adapter_info.dram_size;
1827
1828 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1829
1830 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1831 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1832 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1833 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1834 }
1835
1836 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1837 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1838 }
1839
1840 static inline void
1841 mega_free_sgl(adapter_t *adapter)
1842 {
1843 scb_t *scb;
1844 int i;
1845
1846 for(i = 0; i < adapter->max_cmds; i++) {
1847
1848 scb = &adapter->scb_list[i];
1849
1850 if( scb->sgl64 ) {
1851 pci_free_consistent(adapter->dev,
1852 sizeof(mega_sgl64) * adapter->sglen,
1853 scb->sgl64,
1854 scb->sgl_dma_addr);
1855
1856 scb->sgl64 = NULL;
1857 }
1858
1859 if( scb->pthru ) {
1860 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1861 scb->pthru, scb->pthru_dma_addr);
1862
1863 scb->pthru = NULL;
1864 }
1865
1866 if( scb->epthru ) {
1867 pci_free_consistent(adapter->dev,
1868 sizeof(mega_ext_passthru),
1869 scb->epthru, scb->epthru_dma_addr);
1870
1871 scb->epthru = NULL;
1872 }
1873
1874 }
1875 }
1876
1877
1878 /*
1879 * Get information about the card/driver
1880 */
1881 const char *
1882 megaraid_info(struct Scsi_Host *host)
1883 {
1884 static char buffer[512];
1885 adapter_t *adapter;
1886
1887 adapter = (adapter_t *)host->hostdata;
1888
1889 sprintf (buffer,
1890 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1891 adapter->fw_version, adapter->product_info.max_commands,
1892 adapter->host->max_id, adapter->host->max_channel,
1893 adapter->host->max_lun);
1894 return buffer;
1895 }
1896
1897 /*
1898 * Abort a previous SCSI request. Only commands on the pending list can be
1899 * aborted. All the commands issued to the F/W must complete.
1900 */
1901 static int
1902 megaraid_abort(Scsi_Cmnd *cmd)
1903 {
1904 adapter_t *adapter;
1905 int rval;
1906
1907 adapter = (adapter_t *)cmd->device->host->hostdata;
1908
1909 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1910
1911 /*
1912 * This is required here to complete any completed requests
1913 * to be communicated over to the mid layer.
1914 */
1915 mega_rundoneq(adapter);
1916
1917 return rval;
1918 }
1919
1920
1921 static int
1922 megaraid_reset(struct scsi_cmnd *cmd)
1923 {
1924 adapter_t *adapter;
1925 megacmd_t mc;
1926 int rval;
1927
1928 adapter = (adapter_t *)cmd->device->host->hostdata;
1929
1930 #if MEGA_HAVE_CLUSTERING
1931 mc.cmd = MEGA_CLUSTER_CMD;
1932 mc.opcode = MEGA_RESET_RESERVATIONS;
1933
1934 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1935 printk(KERN_WARNING
1936 "megaraid: reservation reset failed.\n");
1937 }
1938 else {
1939 printk(KERN_INFO "megaraid: reservation reset.\n");
1940 }
1941 #endif
1942
1943 spin_lock_irq(&adapter->lock);
1944
1945 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1946
1947 /*
1948 * This is required here to complete any completed requests
1949 * to be communicated over to the mid layer.
1950 */
1951 mega_rundoneq(adapter);
1952 spin_unlock_irq(&adapter->lock);
1953
1954 return rval;
1955 }
1956
1957 /**
1958 * megaraid_abort_and_reset()
1959 * @adapter - megaraid soft state
1960 * @cmd - scsi command to be aborted or reset
1961 * @aor - abort or reset flag
1962 *
1963 * Try to locate the scsi command in the pending queue. If found and is not
1964 * issued to the controller, abort/reset it. Otherwise return failure
1965 */
1966 static int
1967 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1968 {
1969 struct list_head *pos, *next;
1970 scb_t *scb;
1971
1972 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1973 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1974 cmd->cmnd[0], cmd->device->channel,
1975 cmd->device->id, cmd->device->lun);
1976
1977 if(list_empty(&adapter->pending_list))
1978 return FALSE;
1979
1980 list_for_each_safe(pos, next, &adapter->pending_list) {
1981
1982 scb = list_entry(pos, scb_t, list);
1983
1984 if (scb->cmd == cmd) { /* Found command */
1985
1986 scb->state |= aor;
1987
1988 /*
1989 * Check if this command has firmare owenership. If
1990 * yes, we cannot reset this command. Whenever, f/w
1991 * completes this command, we will return appropriate
1992 * status from ISR.
1993 */
1994 if( scb->state & SCB_ISSUED ) {
1995
1996 printk(KERN_WARNING
1997 "megaraid: %s-%lx[%x], fw owner.\n",
1998 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1999 cmd->serial_number, scb->idx);
2000
2001 return FALSE;
2002 }
2003 else {
2004
2005 /*
2006 * Not yet issued! Remove from the pending
2007 * list
2008 */
2009 printk(KERN_WARNING
2010 "megaraid: %s-%lx[%x], driver owner.\n",
2011 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2012 cmd->serial_number, scb->idx);
2013
2014 mega_free_scb(adapter, scb);
2015
2016 if( aor == SCB_ABORT ) {
2017 cmd->result = (DID_ABORT << 16);
2018 }
2019 else {
2020 cmd->result = (DID_RESET << 16);
2021 }
2022
2023 list_add_tail(SCSI_LIST(cmd),
2024 &adapter->completed_list);
2025
2026 return TRUE;
2027 }
2028 }
2029 }
2030
2031 return FALSE;
2032 }
2033
2034 static inline int
2035 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2036 {
2037 *pdev = alloc_pci_dev();
2038
2039 if( *pdev == NULL ) return -1;
2040
2041 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2042
2043 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
2044 kfree(*pdev);
2045 return -1;
2046 }
2047
2048 return 0;
2049 }
2050
2051 static inline void
2052 free_local_pdev(struct pci_dev *pdev)
2053 {
2054 kfree(pdev);
2055 }
2056
2057 /**
2058 * mega_allocate_inquiry()
2059 * @dma_handle - handle returned for dma address
2060 * @pdev - handle to pci device
2061 *
2062 * allocates memory for inquiry structure
2063 */
2064 static inline void *
2065 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2066 {
2067 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2068 }
2069
2070
2071 static inline void
2072 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2073 {
2074 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2075 }
2076
2077
2078 #ifdef CONFIG_PROC_FS
2079 /* Following code handles /proc fs */
2080
2081 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2082 S_IRUSR | S_IFREG, \
2083 controller_proc_dir_entry, \
2084 func, adapter)
2085
2086 /**
2087 * mega_create_proc_entry()
2088 * @index - index in soft state array
2089 * @parent - parent node for this /proc entry
2090 *
2091 * Creates /proc entries for our controllers.
2092 */
2093 static void
2094 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2095 {
2096 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2097 u8 string[64] = { 0 };
2098 adapter_t *adapter = hba_soft_state[index];
2099
2100 sprintf(string, "hba%d", adapter->host->host_no);
2101
2102 controller_proc_dir_entry =
2103 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2104
2105 if(!controller_proc_dir_entry) {
2106 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2107 return;
2108 }
2109 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2110 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2111 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2112 #if MEGA_HAVE_ENH_PROC
2113 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2114 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2115 proc_battery);
2116
2117 /*
2118 * Display each physical drive on its channel
2119 */
2120 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2121 proc_pdrv_ch0);
2122 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2123 proc_pdrv_ch1);
2124 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2125 proc_pdrv_ch2);
2126 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2127 proc_pdrv_ch3);
2128
2129 /*
2130 * Display a set of up to 10 logical drive through each of following
2131 * /proc entries
2132 */
2133 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2134 proc_rdrv_10);
2135 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2136 proc_rdrv_20);
2137 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2138 proc_rdrv_30);
2139 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2140 proc_rdrv_40);
2141 #endif
2142 }
2143
2144
2145 /**
2146 * proc_read_config()
2147 * @page - buffer to write the data in
2148 * @start - where the actual data has been written in page
2149 * @offset - same meaning as the read system call
2150 * @count - same meaning as the read system call
2151 * @eof - set if no more data needs to be returned
2152 * @data - pointer to our soft state
2153 *
2154 * Display configuration information about the controller.
2155 */
2156 static int
2157 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2158 void *data)
2159 {
2160
2161 adapter_t *adapter = (adapter_t *)data;
2162 int len = 0;
2163
2164 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2165
2166 if(adapter->product_info.product_name[0])
2167 len += sprintf(page+len, "%s\n",
2168 adapter->product_info.product_name);
2169
2170 len += sprintf(page+len, "Controller Type: ");
2171
2172 if( adapter->flag & BOARD_MEMMAP ) {
2173 len += sprintf(page+len,
2174 "438/466/467/471/493/518/520/531/532\n");
2175 }
2176 else {
2177 len += sprintf(page+len,
2178 "418/428/434\n");
2179 }
2180
2181 if(adapter->flag & BOARD_40LD) {
2182 len += sprintf(page+len,
2183 "Controller Supports 40 Logical Drives\n");
2184 }
2185
2186 if(adapter->flag & BOARD_64BIT) {
2187 len += sprintf(page+len,
2188 "Controller capable of 64-bit memory addressing\n");
2189 }
2190 if( adapter->has_64bit_addr ) {
2191 len += sprintf(page+len,
2192 "Controller using 64-bit memory addressing\n");
2193 }
2194 else {
2195 len += sprintf(page+len,
2196 "Controller is not using 64-bit memory addressing\n");
2197 }
2198
2199 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2200 adapter->host->irq);
2201
2202 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2203 adapter->numldrv, adapter->product_info.nchannels);
2204
2205 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2206 adapter->fw_version, adapter->bios_version,
2207 adapter->product_info.dram_size);
2208
2209 len += sprintf(page+len,
2210 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2211 adapter->product_info.max_commands, adapter->max_cmds);
2212
2213 len += sprintf(page+len, "support_ext_cdb = %d\n",
2214 adapter->support_ext_cdb);
2215 len += sprintf(page+len, "support_random_del = %d\n",
2216 adapter->support_random_del);
2217 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2218 adapter->boot_ldrv_enabled);
2219 len += sprintf(page+len, "boot_ldrv = %d\n",
2220 adapter->boot_ldrv);
2221 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2222 adapter->boot_pdrv_enabled);
2223 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2224 adapter->boot_pdrv_ch);
2225 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2226 adapter->boot_pdrv_tgt);
2227 len += sprintf(page+len, "quiescent = %d\n",
2228 atomic_read(&adapter->quiescent));
2229 len += sprintf(page+len, "has_cluster = %d\n",
2230 adapter->has_cluster);
2231
2232 len += sprintf(page+len, "\nModule Parameters:\n");
2233 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2234 max_cmd_per_lun);
2235 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2236 max_sectors_per_io);
2237
2238 *eof = 1;
2239
2240 return len;
2241 }
2242
2243
2244
2245 /**
2246 * proc_read_stat()
2247 * @page - buffer to write the data in
2248 * @start - where the actual data has been written in page
2249 * @offset - same meaning as the read system call
2250 * @count - same meaning as the read system call
2251 * @eof - set if no more data needs to be returned
2252 * @data - pointer to our soft state
2253 *
2254 * Diaplay statistical information about the I/O activity.
2255 */
2256 static int
2257 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2258 void *data)
2259 {
2260 adapter_t *adapter;
2261 int len;
2262 int i;
2263
2264 i = 0; /* avoid compilation warnings */
2265 len = 0;
2266 adapter = (adapter_t *)data;
2267
2268 len = sprintf(page, "Statistical Information for this controller\n");
2269 len += sprintf(page+len, "pend_cmds = %d\n",
2270 atomic_read(&adapter->pend_cmds));
2271 #if MEGA_HAVE_STATS
2272 for(i = 0; i < adapter->numldrv; i++) {
2273 len += sprintf(page+len, "Logical Drive %d:\n", i);
2274
2275 len += sprintf(page+len,
2276 "\tReads Issued = %lu, Writes Issued = %lu\n",
2277 adapter->nreads[i], adapter->nwrites[i]);
2278
2279 len += sprintf(page+len,
2280 "\tSectors Read = %lu, Sectors Written = %lu\n",
2281 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2282
2283 len += sprintf(page+len,
2284 "\tRead errors = %lu, Write errors = %lu\n\n",
2285 adapter->rd_errors[i], adapter->wr_errors[i]);
2286 }
2287 #else
2288 len += sprintf(page+len,
2289 "IO and error counters not compiled in driver.\n");
2290 #endif
2291
2292 *eof = 1;
2293
2294 return len;
2295 }
2296
2297
2298 /**
2299 * proc_read_mbox()
2300 * @page - buffer to write the data in
2301 * @start - where the actual data has been written in page
2302 * @offset - same meaning as the read system call
2303 * @count - same meaning as the read system call
2304 * @eof - set if no more data needs to be returned
2305 * @data - pointer to our soft state
2306 *
2307 * Display mailbox information for the last command issued. This information
2308 * is good for debugging.
2309 */
2310 static int
2311 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2312 void *data)
2313 {
2314
2315 adapter_t *adapter = (adapter_t *)data;
2316 volatile mbox_t *mbox = adapter->mbox;
2317 int len = 0;
2318
2319 len = sprintf(page, "Contents of Mail Box Structure\n");
2320 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2321 mbox->m_out.cmd);
2322 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2323 mbox->m_out.cmdid);
2324 len += sprintf(page+len, " No of Sectors= %04d\n",
2325 mbox->m_out.numsectors);
2326 len += sprintf(page+len, " LBA = 0x%02x\n",
2327 mbox->m_out.lba);
2328 len += sprintf(page+len, " DTA = 0x%08x\n",
2329 mbox->m_out.xferaddr);
2330 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2331 mbox->m_out.logdrv);
2332 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2333 mbox->m_out.numsgelements);
2334 len += sprintf(page+len, " Busy = %01x\n",
2335 mbox->m_in.busy);
2336 len += sprintf(page+len, " Status = 0x%02x\n",
2337 mbox->m_in.status);
2338
2339 *eof = 1;
2340
2341 return len;
2342 }
2343
2344
2345 /**
2346 * proc_rebuild_rate()
2347 * @page - buffer to write the data in
2348 * @start - where the actual data has been written in page
2349 * @offset - same meaning as the read system call
2350 * @count - same meaning as the read system call
2351 * @eof - set if no more data needs to be returned
2352 * @data - pointer to our soft state
2353 *
2354 * Display current rebuild rate
2355 */
2356 static int
2357 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2358 void *data)
2359 {
2360 adapter_t *adapter = (adapter_t *)data;
2361 dma_addr_t dma_handle;
2362 caddr_t inquiry;
2363 struct pci_dev *pdev;
2364 int len = 0;
2365
2366 if( make_local_pdev(adapter, &pdev) != 0 ) {
2367 *eof = 1;
2368 return len;
2369 }
2370
2371 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2372 free_local_pdev(pdev);
2373 *eof = 1;
2374 return len;
2375 }
2376
2377 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2378
2379 len = sprintf(page, "Adapter inquiry failed.\n");
2380
2381 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2382
2383 mega_free_inquiry(inquiry, dma_handle, pdev);
2384
2385 free_local_pdev(pdev);
2386
2387 *eof = 1;
2388
2389 return len;
2390 }
2391
2392 if( adapter->flag & BOARD_40LD ) {
2393 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2394 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2395 }
2396 else {
2397 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2398 ((mraid_ext_inquiry *)
2399 inquiry)->raid_inq.adapter_info.rebuild_rate);
2400 }
2401
2402
2403 mega_free_inquiry(inquiry, dma_handle, pdev);
2404
2405 free_local_pdev(pdev);
2406
2407 *eof = 1;
2408
2409 return len;
2410 }
2411
2412
2413 /**
2414 * proc_battery()
2415 * @page - buffer to write the data in
2416 * @start - where the actual data has been written in page
2417 * @offset - same meaning as the read system call
2418 * @count - same meaning as the read system call
2419 * @eof - set if no more data needs to be returned
2420 * @data - pointer to our soft state
2421 *
2422 * Display information about the battery module on the controller.
2423 */
2424 static int
2425 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2426 void *data)
2427 {
2428 adapter_t *adapter = (adapter_t *)data;
2429 dma_addr_t dma_handle;
2430 caddr_t inquiry;
2431 struct pci_dev *pdev;
2432 u8 battery_status = 0;
2433 char str[256];
2434 int len = 0;
2435
2436 if( make_local_pdev(adapter, &pdev) != 0 ) {
2437 *eof = 1;
2438 return len;
2439 }
2440
2441 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2442 free_local_pdev(pdev);
2443 *eof = 1;
2444 return len;
2445 }
2446
2447 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2448
2449 len = sprintf(page, "Adapter inquiry failed.\n");
2450
2451 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2452
2453 mega_free_inquiry(inquiry, dma_handle, pdev);
2454
2455 free_local_pdev(pdev);
2456
2457 *eof = 1;
2458
2459 return len;
2460 }
2461
2462 if( adapter->flag & BOARD_40LD ) {
2463 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2464 }
2465 else {
2466 battery_status = ((mraid_ext_inquiry *)inquiry)->
2467 raid_inq.adapter_info.battery_status;
2468 }
2469
2470 /*
2471 * Decode the battery status
2472 */
2473 sprintf(str, "Battery Status:[%d]", battery_status);
2474
2475 if(battery_status == MEGA_BATT_CHARGE_DONE)
2476 strcat(str, " Charge Done");
2477
2478 if(battery_status & MEGA_BATT_MODULE_MISSING)
2479 strcat(str, " Module Missing");
2480
2481 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2482 strcat(str, " Low Voltage");
2483
2484 if(battery_status & MEGA_BATT_TEMP_HIGH)
2485 strcat(str, " Temperature High");
2486
2487 if(battery_status & MEGA_BATT_PACK_MISSING)
2488 strcat(str, " Pack Missing");
2489
2490 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2491 strcat(str, " Charge In-progress");
2492
2493 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2494 strcat(str, " Charge Fail");
2495
2496 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2497 strcat(str, " Cycles Exceeded");
2498
2499 len = sprintf(page, "%s\n", str);
2500
2501
2502 mega_free_inquiry(inquiry, dma_handle, pdev);
2503
2504 free_local_pdev(pdev);
2505
2506 *eof = 1;
2507
2508 return len;
2509 }
2510
2511
2512 /**
2513 * proc_pdrv_ch0()
2514 * @page - buffer to write the data in
2515 * @start - where the actual data has been written in page
2516 * @offset - same meaning as the read system call
2517 * @count - same meaning as the read system call
2518 * @eof - set if no more data needs to be returned
2519 * @data - pointer to our soft state
2520 *
2521 * Display information about the physical drives on physical channel 0.
2522 */
2523 static int
2524 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2525 void *data)
2526 {
2527 adapter_t *adapter = (adapter_t *)data;
2528
2529 *eof = 1;
2530
2531 return (proc_pdrv(adapter, page, 0));
2532 }
2533
2534
2535 /**
2536 * proc_pdrv_ch1()
2537 * @page - buffer to write the data in
2538 * @start - where the actual data has been written in page
2539 * @offset - same meaning as the read system call
2540 * @count - same meaning as the read system call
2541 * @eof - set if no more data needs to be returned
2542 * @data - pointer to our soft state
2543 *
2544 * Display information about the physical drives on physical channel 1.
2545 */
2546 static int
2547 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2548 void *data)
2549 {
2550 adapter_t *adapter = (adapter_t *)data;
2551
2552 *eof = 1;
2553
2554 return (proc_pdrv(adapter, page, 1));
2555 }
2556
2557
2558 /**
2559 * proc_pdrv_ch2()
2560 * @page - buffer to write the data in
2561 * @start - where the actual data has been written in page
2562 * @offset - same meaning as the read system call
2563 * @count - same meaning as the read system call
2564 * @eof - set if no more data needs to be returned
2565 * @data - pointer to our soft state
2566 *
2567 * Display information about the physical drives on physical channel 2.
2568 */
2569 static int
2570 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2571 void *data)
2572 {
2573 adapter_t *adapter = (adapter_t *)data;
2574
2575 *eof = 1;
2576
2577 return (proc_pdrv(adapter, page, 2));
2578 }
2579
2580
2581 /**
2582 * proc_pdrv_ch3()
2583 * @page - buffer to write the data in
2584 * @start - where the actual data has been written in page
2585 * @offset - same meaning as the read system call
2586 * @count - same meaning as the read system call
2587 * @eof - set if no more data needs to be returned
2588 * @data - pointer to our soft state
2589 *
2590 * Display information about the physical drives on physical channel 3.
2591 */
2592 static int
2593 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2594 void *data)
2595 {
2596 adapter_t *adapter = (adapter_t *)data;
2597
2598 *eof = 1;
2599
2600 return (proc_pdrv(adapter, page, 3));
2601 }
2602
2603
2604 /**
2605 * proc_pdrv()
2606 * @page - buffer to write the data in
2607 * @adapter - pointer to our soft state
2608 *
2609 * Display information about the physical drives.
2610 */
2611 static int
2612 proc_pdrv(adapter_t *adapter, char *page, int channel)
2613 {
2614 dma_addr_t dma_handle;
2615 char *scsi_inq;
2616 dma_addr_t scsi_inq_dma_handle;
2617 caddr_t inquiry;
2618 struct pci_dev *pdev;
2619 u8 *pdrv_state;
2620 u8 state;
2621 int tgt;
2622 int max_channels;
2623 int len = 0;
2624 char str[80];
2625 int i;
2626
2627 if( make_local_pdev(adapter, &pdev) != 0 ) {
2628 return len;
2629 }
2630
2631 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2632 goto free_pdev;
2633 }
2634
2635 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2636 len = sprintf(page, "Adapter inquiry failed.\n");
2637
2638 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2639
2640 goto free_inquiry;
2641 }
2642
2643
2644 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2645
2646 if( scsi_inq == NULL ) {
2647 len = sprintf(page, "memory not available for scsi inq.\n");
2648
2649 goto free_inquiry;
2650 }
2651
2652 if( adapter->flag & BOARD_40LD ) {
2653 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2654 }
2655 else {
2656 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2657 raid_inq.pdrv_info.pdrv_state;
2658 }
2659
2660 max_channels = adapter->product_info.nchannels;
2661
2662 if( channel >= max_channels ) {
2663 goto free_pci;
2664 }
2665
2666 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2667
2668 i = channel*16 + tgt;
2669
2670 state = *(pdrv_state + i);
2671
2672 switch( state & 0x0F ) {
2673
2674 case PDRV_ONLINE:
2675 sprintf(str,
2676 "Channel:%2d Id:%2d State: Online",
2677 channel, tgt);
2678 break;
2679
2680 case PDRV_FAILED:
2681 sprintf(str,
2682 "Channel:%2d Id:%2d State: Failed",
2683 channel, tgt);
2684 break;
2685
2686 case PDRV_RBLD:
2687 sprintf(str,
2688 "Channel:%2d Id:%2d State: Rebuild",
2689 channel, tgt);
2690 break;
2691
2692 case PDRV_HOTSPARE:
2693 sprintf(str,
2694 "Channel:%2d Id:%2d State: Hot spare",
2695 channel, tgt);
2696 break;
2697
2698 default:
2699 sprintf(str,
2700 "Channel:%2d Id:%2d State: Un-configured",
2701 channel, tgt);
2702 break;
2703
2704 }
2705
2706 /*
2707 * This interface displays inquiries for disk drives
2708 * only. Inquries for logical drives and non-disk
2709 * devices are available through /proc/scsi/scsi
2710 */
2711 memset(scsi_inq, 0, 256);
2712 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2713 scsi_inq_dma_handle) ||
2714 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2715 continue;
2716 }
2717
2718 /*
2719 * Check for overflow. We print less than 240
2720 * characters for inquiry
2721 */
2722 if( (len + 240) >= PAGE_SIZE ) break;
2723
2724 len += sprintf(page+len, "%s.\n", str);
2725
2726 len += mega_print_inquiry(page+len, scsi_inq);
2727 }
2728
2729 free_pci:
2730 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2731 free_inquiry:
2732 mega_free_inquiry(inquiry, dma_handle, pdev);
2733 free_pdev:
2734 free_local_pdev(pdev);
2735
2736 return len;
2737 }
2738
2739
2740 /*
2741 * Display scsi inquiry
2742 */
2743 static int
2744 mega_print_inquiry(char *page, char *scsi_inq)
2745 {
2746 int len = 0;
2747 int i;
2748
2749 len = sprintf(page, " Vendor: ");
2750 for( i = 8; i < 16; i++ ) {
2751 len += sprintf(page+len, "%c", scsi_inq[i]);
2752 }
2753
2754 len += sprintf(page+len, " Model: ");
2755
2756 for( i = 16; i < 32; i++ ) {
2757 len += sprintf(page+len, "%c", scsi_inq[i]);
2758 }
2759
2760 len += sprintf(page+len, " Rev: ");
2761
2762 for( i = 32; i < 36; i++ ) {
2763 len += sprintf(page+len, "%c", scsi_inq[i]);
2764 }
2765
2766 len += sprintf(page+len, "\n");
2767
2768 i = scsi_inq[0] & 0x1f;
2769
2770 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2771
2772 len += sprintf(page+len,
2773 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2774
2775 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2776 len += sprintf(page+len, " CCS\n");
2777 else
2778 len += sprintf(page+len, "\n");
2779
2780 return len;
2781 }
2782
2783
2784 /**
2785 * proc_rdrv_10()
2786 * @page - buffer to write the data in
2787 * @start - where the actual data has been written in page
2788 * @offset - same meaning as the read system call
2789 * @count - same meaning as the read system call
2790 * @eof - set if no more data needs to be returned
2791 * @data - pointer to our soft state
2792 *
2793 * Display real time information about the logical drives 0 through 9.
2794 */
2795 static int
2796 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2797 void *data)
2798 {
2799 adapter_t *adapter = (adapter_t *)data;
2800
2801 *eof = 1;
2802
2803 return (proc_rdrv(adapter, page, 0, 9));
2804 }
2805
2806
2807 /**
2808 * proc_rdrv_20()
2809 * @page - buffer to write the data in
2810 * @start - where the actual data has been written in page
2811 * @offset - same meaning as the read system call
2812 * @count - same meaning as the read system call
2813 * @eof - set if no more data needs to be returned
2814 * @data - pointer to our soft state
2815 *
2816 * Display real time information about the logical drives 0 through 9.
2817 */
2818 static int
2819 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2820 void *data)
2821 {
2822 adapter_t *adapter = (adapter_t *)data;
2823
2824 *eof = 1;
2825
2826 return (proc_rdrv(adapter, page, 10, 19));
2827 }
2828
2829
2830 /**
2831 * proc_rdrv_30()
2832 * @page - buffer to write the data in
2833 * @start - where the actual data has been written in page
2834 * @offset - same meaning as the read system call
2835 * @count - same meaning as the read system call
2836 * @eof - set if no more data needs to be returned
2837 * @data - pointer to our soft state
2838 *
2839 * Display real time information about the logical drives 0 through 9.
2840 */
2841 static int
2842 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2843 void *data)
2844 {
2845 adapter_t *adapter = (adapter_t *)data;
2846
2847 *eof = 1;
2848
2849 return (proc_rdrv(adapter, page, 20, 29));
2850 }
2851
2852
2853 /**
2854 * proc_rdrv_40()
2855 * @page - buffer to write the data in
2856 * @start - where the actual data has been written in page
2857 * @offset - same meaning as the read system call
2858 * @count - same meaning as the read system call
2859 * @eof - set if no more data needs to be returned
2860 * @data - pointer to our soft state
2861 *
2862 * Display real time information about the logical drives 0 through 9.
2863 */
2864 static int
2865 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2866 void *data)
2867 {
2868 adapter_t *adapter = (adapter_t *)data;
2869
2870 *eof = 1;
2871
2872 return (proc_rdrv(adapter, page, 30, 39));
2873 }
2874
2875
2876 /**
2877 * proc_rdrv()
2878 * @page - buffer to write the data in
2879 * @adapter - pointer to our soft state
2880 * @start - starting logical drive to display
2881 * @end - ending logical drive to display
2882 *
2883 * We do not print the inquiry information since its already available through
2884 * /proc/scsi/scsi interface
2885 */
2886 static int
2887 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2888 {
2889 dma_addr_t dma_handle;
2890 logdrv_param *lparam;
2891 megacmd_t mc;
2892 char *disk_array;
2893 dma_addr_t disk_array_dma_handle;
2894 caddr_t inquiry;
2895 struct pci_dev *pdev;
2896 u8 *rdrv_state;
2897 int num_ldrv;
2898 u32 array_sz;
2899 int len = 0;
2900 int i;
2901
2902 if( make_local_pdev(adapter, &pdev) != 0 ) {
2903 return len;
2904 }
2905
2906 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2907 free_local_pdev(pdev);
2908 return len;
2909 }
2910
2911 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2912
2913 len = sprintf(page, "Adapter inquiry failed.\n");
2914
2915 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2916
2917 mega_free_inquiry(inquiry, dma_handle, pdev);
2918
2919 free_local_pdev(pdev);
2920
2921 return len;
2922 }
2923
2924 memset(&mc, 0, sizeof(megacmd_t));
2925
2926 if( adapter->flag & BOARD_40LD ) {
2927 array_sz = sizeof(disk_array_40ld);
2928
2929 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2930
2931 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2932 }
2933 else {
2934 array_sz = sizeof(disk_array_8ld);
2935
2936 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2937 raid_inq.logdrv_info.ldrv_state;
2938
2939 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2940 raid_inq.logdrv_info.num_ldrv;
2941 }
2942
2943 disk_array = pci_alloc_consistent(pdev, array_sz,
2944 &disk_array_dma_handle);
2945
2946 if( disk_array == NULL ) {
2947 len = sprintf(page, "memory not available.\n");
2948
2949 mega_free_inquiry(inquiry, dma_handle, pdev);
2950
2951 free_local_pdev(pdev);
2952
2953 return len;
2954 }
2955
2956 mc.xferaddr = (u32)disk_array_dma_handle;
2957
2958 if( adapter->flag & BOARD_40LD ) {
2959 mc.cmd = FC_NEW_CONFIG;
2960 mc.opcode = OP_DCMD_READ_CONFIG;
2961
2962 if( mega_internal_command(adapter, &mc, NULL) ) {
2963
2964 len = sprintf(page, "40LD read config failed.\n");
2965
2966 mega_free_inquiry(inquiry, dma_handle, pdev);
2967
2968 pci_free_consistent(pdev, array_sz, disk_array,
2969 disk_array_dma_handle);
2970
2971 free_local_pdev(pdev);
2972
2973 return len;
2974 }
2975
2976 }
2977 else {
2978 mc.cmd = NEW_READ_CONFIG_8LD;
2979
2980 if( mega_internal_command(adapter, &mc, NULL) ) {
2981
2982 mc.cmd = READ_CONFIG_8LD;
2983
2984 if( mega_internal_command(adapter, &mc,
2985 NULL) ){
2986
2987 len = sprintf(page,
2988 "8LD read config failed.\n");
2989
2990 mega_free_inquiry(inquiry, dma_handle, pdev);
2991
2992 pci_free_consistent(pdev, array_sz,
2993 disk_array,
2994 disk_array_dma_handle);
2995
2996 free_local_pdev(pdev);
2997
2998 return len;
2999 }
3000 }
3001 }
3002
3003 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3004
3005 if( adapter->flag & BOARD_40LD ) {
3006 lparam =
3007 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3008 }
3009 else {
3010 lparam =
3011 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3012 }
3013
3014 /*
3015 * Check for overflow. We print less than 240 characters for
3016 * information about each logical drive.
3017 */
3018 if( (len + 240) >= PAGE_SIZE ) break;
3019
3020 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3021
3022 switch( rdrv_state[i] & 0x0F ) {
3023 case RDRV_OFFLINE:
3024 len += sprintf(page+len, "state: offline");
3025 break;
3026
3027 case RDRV_DEGRADED:
3028 len += sprintf(page+len, "state: degraded");
3029 break;
3030
3031 case RDRV_OPTIMAL:
3032 len += sprintf(page+len, "state: optimal");
3033 break;
3034
3035 case RDRV_DELETED:
3036 len += sprintf(page+len, "state: deleted");
3037 break;
3038
3039 default:
3040 len += sprintf(page+len, "state: unknown");
3041 break;
3042 }
3043
3044 /*
3045 * Check if check consistency or initialization is going on
3046 * for this logical drive.
3047 */
3048 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3049 len += sprintf(page+len,
3050 ", check-consistency in progress");
3051 }
3052 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3053 len += sprintf(page+len,
3054 ", initialization in progress");
3055 }
3056
3057 len += sprintf(page+len, "\n");
3058
3059 len += sprintf(page+len, "Span depth:%3d, ",
3060 lparam->span_depth);
3061
3062 len += sprintf(page+len, "RAID level:%3d, ",
3063 lparam->level);
3064
3065 len += sprintf(page+len, "Stripe size:%3d, ",
3066 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3067
3068 len += sprintf(page+len, "Row size:%3d\n",
3069 lparam->row_size);
3070
3071
3072 len += sprintf(page+len, "Read Policy: ");
3073
3074 switch(lparam->read_ahead) {
3075
3076 case NO_READ_AHEAD:
3077 len += sprintf(page+len, "No read ahead, ");
3078 break;
3079
3080 case READ_AHEAD:
3081 len += sprintf(page+len, "Read ahead, ");
3082 break;
3083
3084 case ADAP_READ_AHEAD:
3085 len += sprintf(page+len, "Adaptive, ");
3086 break;
3087
3088 }
3089
3090 len += sprintf(page+len, "Write Policy: ");
3091
3092 switch(lparam->write_mode) {
3093
3094 case WRMODE_WRITE_THRU:
3095 len += sprintf(page+len, "Write thru, ");
3096 break;
3097
3098 case WRMODE_WRITE_BACK:
3099 len += sprintf(page+len, "Write back, ");
3100 break;
3101 }
3102
3103 len += sprintf(page+len, "Cache Policy: ");
3104
3105 switch(lparam->direct_io) {
3106
3107 case CACHED_IO:
3108 len += sprintf(page+len, "Cached IO\n\n");
3109 break;
3110
3111 case DIRECT_IO:
3112 len += sprintf(page+len, "Direct IO\n\n");
3113 break;
3114 }
3115 }
3116
3117 mega_free_inquiry(inquiry, dma_handle, pdev);
3118
3119 pci_free_consistent(pdev, array_sz, disk_array,
3120 disk_array_dma_handle);
3121
3122 free_local_pdev(pdev);
3123
3124 return len;
3125 }
3126 #else
3127 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3128 {
3129 }
3130 #endif
3131
3132
3133 /**
3134 * megaraid_biosparam()
3135 *
3136 * Return the disk geometry for a particular disk
3137 */
3138 static int
3139 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3140 sector_t capacity, int geom[])
3141 {
3142 adapter_t *adapter;
3143 unsigned char *bh;
3144 int heads;
3145 int sectors;
3146 int cylinders;
3147 int rval;
3148
3149 /* Get pointer to host config structure */
3150 adapter = (adapter_t *)sdev->host->hostdata;
3151
3152 if (IS_RAID_CH(adapter, sdev->channel)) {
3153 /* Default heads (64) & sectors (32) */
3154 heads = 64;
3155 sectors = 32;
3156 cylinders = (ulong)capacity / (heads * sectors);
3157
3158 /*
3159 * Handle extended translation size for logical drives
3160 * > 1Gb
3161 */
3162 if ((ulong)capacity >= 0x200000) {
3163 heads = 255;
3164 sectors = 63;
3165 cylinders = (ulong)capacity / (heads * sectors);
3166 }
3167
3168 /* return result */
3169 geom[0] = heads;
3170 geom[1] = sectors;
3171 geom[2] = cylinders;
3172 }
3173 else {
3174 bh = scsi_bios_ptable(bdev);
3175
3176 if( bh ) {
3177 rval = scsi_partsize(bh, capacity,
3178 &geom[2], &geom[0], &geom[1]);
3179 kfree(bh);
3180 if( rval != -1 )
3181 return rval;
3182 }
3183
3184 printk(KERN_INFO
3185 "megaraid: invalid partition on this disk on channel %d\n",
3186 sdev->channel);
3187
3188 /* Default heads (64) & sectors (32) */
3189 heads = 64;
3190 sectors = 32;
3191 cylinders = (ulong)capacity / (heads * sectors);
3192
3193 /* Handle extended translation size for logical drives > 1Gb */
3194 if ((ulong)capacity >= 0x200000) {
3195 heads = 255;
3196 sectors = 63;
3197 cylinders = (ulong)capacity / (heads * sectors);
3198 }
3199
3200 /* return result */
3201 geom[0] = heads;
3202 geom[1] = sectors;
3203 geom[2] = cylinders;
3204 }
3205
3206 return 0;
3207 }
3208
3209 /**
3210 * mega_init_scb()
3211 * @adapter - pointer to our soft state
3212 *
3213 * Allocate memory for the various pointers in the scb structures:
3214 * scatter-gather list pointer, passthru and extended passthru structure
3215 * pointers.
3216 */
3217 static int
3218 mega_init_scb(adapter_t *adapter)
3219 {
3220 scb_t *scb;
3221 int i;
3222
3223 for( i = 0; i < adapter->max_cmds; i++ ) {
3224
3225 scb = &adapter->scb_list[i];
3226
3227 scb->sgl64 = NULL;
3228 scb->sgl = NULL;
3229 scb->pthru = NULL;
3230 scb->epthru = NULL;
3231 }
3232
3233 for( i = 0; i < adapter->max_cmds; i++ ) {
3234
3235 scb = &adapter->scb_list[i];
3236
3237 scb->idx = i;
3238
3239 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3240 sizeof(mega_sgl64) * adapter->sglen,
3241 &scb->sgl_dma_addr);
3242
3243 scb->sgl = (mega_sglist *)scb->sgl64;
3244
3245 if( !scb->sgl ) {
3246 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3247 mega_free_sgl(adapter);
3248 return -1;
3249 }
3250
3251 scb->pthru = pci_alloc_consistent(adapter->dev,
3252 sizeof(mega_passthru),
3253 &scb->pthru_dma_addr);
3254
3255 if( !scb->pthru ) {
3256 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3257 mega_free_sgl(adapter);
3258 return -1;
3259 }
3260
3261 scb->epthru = pci_alloc_consistent(adapter->dev,
3262 sizeof(mega_ext_passthru),
3263 &scb->epthru_dma_addr);
3264
3265 if( !scb->epthru ) {
3266 printk(KERN_WARNING
3267 "Can't allocate extended passthru.\n");
3268 mega_free_sgl(adapter);
3269 return -1;
3270 }
3271
3272
3273 scb->dma_type = MEGA_DMA_TYPE_NONE;
3274
3275 /*
3276 * Link to free list
3277 * lock not required since we are loading the driver, so no
3278 * commands possible right now.
3279 */
3280 scb->state = SCB_FREE;
3281 scb->cmd = NULL;
3282 list_add(&scb->list, &adapter->free_list);
3283 }
3284
3285 return 0;
3286 }
3287
3288
3289 /**
3290 * megadev_open()
3291 * @inode - unused
3292 * @filep - unused
3293 *
3294 * Routines for the character/ioctl interface to the driver. Find out if this
3295 * is a valid open. If yes, increment the module use count so that it cannot
3296 * be unloaded.
3297 */
3298 static int
3299 megadev_open (struct inode *inode, struct file *filep)
3300 {
3301 /*
3302 * Only allow superuser to access private ioctl interface
3303 */
3304 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3305
3306 return 0;
3307 }
3308
3309
3310 /**
3311 * megadev_ioctl()
3312 * @inode - Our device inode
3313 * @filep - unused
3314 * @cmd - ioctl command
3315 * @arg - user buffer
3316 *
3317 * ioctl entry point for our private ioctl interface. We move the data in from
3318 * the user space, prepare the command (if necessary, convert the old MIMD
3319 * ioctl to new ioctl command), and issue a synchronous command to the
3320 * controller.
3321 */
3322 static int
3323 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3324 unsigned long arg)
3325 {
3326 adapter_t *adapter;
3327 nitioctl_t uioc;
3328 int adapno;
3329 int rval;
3330 mega_passthru __user *upthru; /* user address for passthru */
3331 mega_passthru *pthru; /* copy user passthru here */
3332 dma_addr_t pthru_dma_hndl;
3333 void *data = NULL; /* data to be transferred */
3334 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3335 megacmd_t mc;
3336 megastat_t __user *ustats;
3337 int num_ldrv;
3338 u32 uxferaddr = 0;
3339 struct pci_dev *pdev;
3340
3341 ustats = NULL; /* avoid compilation warnings */
3342 num_ldrv = 0;
3343
3344 /*
3345 * Make sure only USCSICMD are issued through this interface.
3346 * MIMD application would still fire different command.
3347 */
3348 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3349 return -EINVAL;
3350 }
3351
3352 /*
3353 * Check and convert a possible MIMD command to NIT command.
3354 * mega_m_to_n() copies the data from the user space, so we do not
3355 * have to do it here.
3356 * NOTE: We will need some user address to copyout the data, therefore
3357 * the inteface layer will also provide us with the required user
3358 * addresses.
3359 */
3360 memset(&uioc, 0, sizeof(nitioctl_t));
3361 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3362 return rval;
3363
3364
3365 switch( uioc.opcode ) {
3366
3367 case GET_DRIVER_VER:
3368 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3369 return (-EFAULT);
3370
3371 break;
3372
3373 case GET_N_ADAP:
3374 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3375 return (-EFAULT);
3376
3377 /*
3378 * Shucks. MIMD interface returns a positive value for number
3379 * of adapters. TODO: Change it to return 0 when there is no
3380 * applicatio using mimd interface.
3381 */
3382 return hba_count;
3383
3384 case GET_ADAP_INFO:
3385
3386 /*
3387 * Which adapter
3388 */
3389 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3390 return (-ENODEV);
3391
3392 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3393 sizeof(struct mcontroller)) )
3394 return (-EFAULT);
3395 break;
3396
3397 #if MEGA_HAVE_STATS
3398
3399 case GET_STATS:
3400 /*
3401 * Which adapter
3402 */
3403 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3404 return (-ENODEV);
3405
3406 adapter = hba_soft_state[adapno];
3407
3408 ustats = uioc.uioc_uaddr;
3409
3410 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3411 return (-EFAULT);
3412
3413 /*
3414 * Check for the validity of the logical drive number
3415 */
3416 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3417
3418 if( copy_to_user(ustats->nreads, adapter->nreads,
3419 num_ldrv*sizeof(u32)) )
3420 return -EFAULT;
3421
3422 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3423 num_ldrv*sizeof(u32)) )
3424 return -EFAULT;
3425
3426 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3427 num_ldrv*sizeof(u32)) )
3428 return -EFAULT;
3429
3430 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3431 num_ldrv*sizeof(u32)) )
3432 return -EFAULT;
3433
3434 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3435 num_ldrv*sizeof(u32)) )
3436 return -EFAULT;
3437
3438 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3439 num_ldrv*sizeof(u32)) )
3440 return -EFAULT;
3441
3442 return 0;
3443
3444 #endif
3445 case MBOX_CMD:
3446
3447 /*
3448 * Which adapter
3449 */
3450 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3451 return (-ENODEV);
3452
3453 adapter = hba_soft_state[adapno];
3454
3455 /*
3456 * Deletion of logical drive is a special case. The adapter
3457 * should be quiescent before this command is issued.
3458 */
3459 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3460 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3461
3462 /*
3463 * Do we support this feature
3464 */
3465 if( !adapter->support_random_del ) {
3466 printk(KERN_WARNING "megaraid: logdrv ");
3467 printk("delete on non-supporting F/W.\n");
3468
3469 return (-EINVAL);
3470 }
3471
3472 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3473
3474 if( rval == 0 ) {
3475 memset(&mc, 0, sizeof(megacmd_t));
3476
3477 mc.status = rval;
3478
3479 rval = mega_n_to_m((void __user *)arg, &mc);
3480 }
3481
3482 return rval;
3483 }
3484 /*
3485 * This interface only support the regular passthru commands.
3486 * Reject extended passthru and 64-bit passthru
3487 */
3488 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3489 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3490
3491 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3492
3493 return (-EINVAL);
3494 }
3495
3496 /*
3497 * For all internal commands, the buffer must be allocated in
3498 * <4GB address range
3499 */
3500 if( make_local_pdev(adapter, &pdev) != 0 )
3501 return -EIO;
3502
3503 /* Is it a passthru command or a DCMD */
3504 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3505 /* Passthru commands */
3506
3507 pthru = pci_alloc_consistent(pdev,
3508 sizeof(mega_passthru),
3509 &pthru_dma_hndl);
3510
3511 if( pthru == NULL ) {
3512 free_local_pdev(pdev);
3513 return (-ENOMEM);
3514 }
3515
3516 /*
3517 * The user passthru structure
3518 */
3519 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3520
3521 /*
3522 * Copy in the user passthru here.
3523 */
3524 if( copy_from_user(pthru, upthru,
3525 sizeof(mega_passthru)) ) {
3526
3527 pci_free_consistent(pdev,
3528 sizeof(mega_passthru), pthru,
3529 pthru_dma_hndl);
3530
3531 free_local_pdev(pdev);
3532
3533 return (-EFAULT);
3534 }
3535
3536 /*
3537 * Is there a data transfer
3538 */
3539 if( pthru->dataxferlen ) {
3540 data = pci_alloc_consistent(pdev,
3541 pthru->dataxferlen,
3542 &data_dma_hndl);
3543
3544 if( data == NULL ) {
3545 pci_free_consistent(pdev,
3546 sizeof(mega_passthru),
3547 pthru,
3548 pthru_dma_hndl);
3549
3550 free_local_pdev(pdev);
3551
3552 return (-ENOMEM);
3553 }
3554
3555 /*
3556 * Save the user address and point the kernel
3557 * address at just allocated memory
3558 */
3559 uxferaddr = pthru->dataxferaddr;
3560 pthru->dataxferaddr = data_dma_hndl;
3561 }
3562
3563
3564 /*
3565 * Is data coming down-stream
3566 */
3567 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3568 /*
3569 * Get the user data
3570 */
3571 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3572 pthru->dataxferlen) ) {
3573 rval = (-EFAULT);
3574 goto freemem_and_return;
3575 }
3576 }
3577
3578 memset(&mc, 0, sizeof(megacmd_t));
3579
3580 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3581 mc.xferaddr = (u32)pthru_dma_hndl;
3582
3583 /*
3584 * Issue the command
3585 */
3586 mega_internal_command(adapter, &mc, pthru);
3587
3588 rval = mega_n_to_m((void __user *)arg, &mc);
3589
3590 if( rval ) goto freemem_and_return;
3591
3592
3593 /*
3594 * Is data going up-stream
3595 */
3596 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3597 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3598 pthru->dataxferlen) ) {
3599 rval = (-EFAULT);
3600 }
3601 }
3602
3603 /*
3604 * Send the request sense data also, irrespective of
3605 * whether the user has asked for it or not.
3606 */
3607 if (copy_to_user(upthru->reqsensearea,
3608 pthru->reqsensearea, 14))
3609 rval = -EFAULT;
3610
3611 freemem_and_return:
3612 if( pthru->dataxferlen ) {
3613 pci_free_consistent(pdev,
3614 pthru->dataxferlen, data,
3615 data_dma_hndl);
3616 }
3617
3618 pci_free_consistent(pdev, sizeof(mega_passthru),
3619 pthru, pthru_dma_hndl);
3620
3621 free_local_pdev(pdev);
3622
3623 return rval;
3624 }
3625 else {
3626 /* DCMD commands */
3627
3628 /*
3629 * Is there a data transfer
3630 */
3631 if( uioc.xferlen ) {
3632 data = pci_alloc_consistent(pdev,
3633 uioc.xferlen, &data_dma_hndl);
3634
3635 if( data == NULL ) {
3636 free_local_pdev(pdev);
3637 return (-ENOMEM);
3638 }
3639
3640 uxferaddr = MBOX(uioc)->xferaddr;
3641 }
3642
3643 /*
3644 * Is data coming down-stream
3645 */
3646 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3647 /*
3648 * Get the user data
3649 */
3650 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3651 uioc.xferlen) ) {
3652
3653 pci_free_consistent(pdev,
3654 uioc.xferlen,
3655 data, data_dma_hndl);
3656
3657 free_local_pdev(pdev);
3658
3659 return (-EFAULT);
3660 }
3661 }
3662
3663 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3664
3665 mc.xferaddr = (u32)data_dma_hndl;
3666
3667 /*
3668 * Issue the command
3669 */
3670 mega_internal_command(adapter, &mc, NULL);
3671
3672 rval = mega_n_to_m((void __user *)arg, &mc);
3673
3674 if( rval ) {
3675 if( uioc.xferlen ) {
3676 pci_free_consistent(pdev,
3677 uioc.xferlen, data,
3678 data_dma_hndl);
3679 }
3680
3681 free_local_pdev(pdev);
3682
3683 return rval;
3684 }
3685
3686 /*
3687 * Is data going up-stream
3688 */
3689 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3690 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3691 uioc.xferlen) ) {
3692
3693 rval = (-EFAULT);
3694 }
3695 }
3696
3697 if( uioc.xferlen ) {
3698 pci_free_consistent(pdev,
3699 uioc.xferlen, data,
3700 data_dma_hndl);
3701 }
3702
3703 free_local_pdev(pdev);
3704
3705 return rval;
3706 }
3707
3708 default:
3709 return (-EINVAL);
3710 }
3711
3712 return 0;
3713 }
3714
3715 /**
3716 * mega_m_to_n()
3717 * @arg - user address
3718 * @uioc - new ioctl structure
3719 *
3720 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3721 * structure
3722 *
3723 * Converts the older mimd ioctl structure to newer NIT structure
3724 */
3725 static int
3726 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3727 {
3728 struct uioctl_t uioc_mimd;
3729 char signature[8] = {0};
3730 u8 opcode;
3731 u8 subopcode;
3732
3733
3734 /*
3735 * check is the application conforms to NIT. We do not have to do much
3736 * in that case.
3737 * We exploit the fact that the signature is stored in the very
3738 * begining of the structure.
3739 */
3740
3741 if( copy_from_user(signature, arg, 7) )
3742 return (-EFAULT);
3743
3744 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3745
3746 /*
3747 * NOTE NOTE: The nit ioctl is still under flux because of
3748 * change of mailbox definition, in HPE. No applications yet
3749 * use this interface and let's not have applications use this
3750 * interface till the new specifitions are in place.
3751 */
3752 return -EINVAL;
3753 #if 0
3754 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3755 return (-EFAULT);
3756 return 0;
3757 #endif
3758 }
3759
3760 /*
3761 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3762 *
3763 * Get the user ioctl structure
3764 */
3765 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3766 return (-EFAULT);
3767
3768
3769 /*
3770 * Get the opcode and subopcode for the commands
3771 */
3772 opcode = uioc_mimd.ui.fcs.opcode;
3773 subopcode = uioc_mimd.ui.fcs.subopcode;
3774
3775 switch (opcode) {
3776 case 0x82:
3777
3778 switch (subopcode) {
3779
3780 case MEGAIOC_QDRVRVER: /* Query driver version */
3781 uioc->opcode = GET_DRIVER_VER;
3782 uioc->uioc_uaddr = uioc_mimd.data;
3783 break;
3784
3785 case MEGAIOC_QNADAP: /* Get # of adapters */
3786 uioc->opcode = GET_N_ADAP;
3787 uioc->uioc_uaddr = uioc_mimd.data;
3788 break;
3789
3790 case MEGAIOC_QADAPINFO: /* Get adapter information */
3791 uioc->opcode = GET_ADAP_INFO;
3792 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3793 uioc->uioc_uaddr = uioc_mimd.data;
3794 break;
3795
3796 default:
3797 return(-EINVAL);
3798 }
3799
3800 break;
3801
3802
3803 case 0x81:
3804
3805 uioc->opcode = MBOX_CMD;
3806 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3807
3808 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3809
3810 uioc->xferlen = uioc_mimd.ui.fcs.length;
3811
3812 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3813 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3814
3815 break;
3816
3817 case 0x80:
3818
3819 uioc->opcode = MBOX_CMD;
3820 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3821
3822 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3823
3824 /*
3825 * Choose the xferlen bigger of input and output data
3826 */
3827 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3828 uioc_mimd.outlen : uioc_mimd.inlen;
3829
3830 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3831 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3832
3833 break;
3834
3835 default:
3836 return (-EINVAL);
3837
3838 }
3839
3840 return 0;
3841 }
3842
3843 /*
3844 * mega_n_to_m()
3845 * @arg - user address
3846 * @mc - mailbox command
3847 *
3848 * Updates the status information to the application, depending on application
3849 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3850 */
3851 static int
3852 mega_n_to_m(void __user *arg, megacmd_t *mc)
3853 {
3854 nitioctl_t __user *uiocp;
3855 megacmd_t __user *umc;
3856 mega_passthru __user *upthru;
3857 struct uioctl_t __user *uioc_mimd;
3858 char signature[8] = {0};
3859
3860 /*
3861 * check is the application conforms to NIT.
3862 */
3863 if( copy_from_user(signature, arg, 7) )
3864 return -EFAULT;
3865
3866 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3867
3868 uiocp = arg;
3869
3870 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3871 return (-EFAULT);
3872
3873 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3874
3875 umc = MBOX_P(uiocp);
3876
3877 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3878 return -EFAULT;
3879
3880 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3881 return (-EFAULT);
3882 }
3883 }
3884 else {
3885 uioc_mimd = arg;
3886
3887 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3888 return (-EFAULT);
3889
3890 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3891
3892 umc = (megacmd_t __user *)uioc_mimd->mbox;
3893
3894 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3895 return (-EFAULT);
3896
3897 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3898 return (-EFAULT);
3899 }
3900 }
3901
3902 return 0;
3903 }
3904
3905
3906 /*
3907 * MEGARAID 'FW' commands.
3908 */
3909
3910 /**
3911 * mega_is_bios_enabled()
3912 * @adapter - pointer to our soft state
3913 *
3914 * issue command to find out if the BIOS is enabled for this controller
3915 */
3916 static int
3917 mega_is_bios_enabled(adapter_t *adapter)
3918 {
3919 unsigned char raw_mbox[sizeof(struct mbox_out)];
3920 mbox_t *mbox;
3921 int ret;
3922
3923 mbox = (mbox_t *)raw_mbox;
3924
3925 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3926
3927 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3928
3929 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3930
3931 raw_mbox[0] = IS_BIOS_ENABLED;
3932 raw_mbox[2] = GET_BIOS;
3933
3934
3935 ret = issue_scb_block(adapter, raw_mbox);
3936
3937 return *(char *)adapter->mega_buffer;
3938 }
3939
3940
3941 /**
3942 * mega_enum_raid_scsi()
3943 * @adapter - pointer to our soft state
3944 *
3945 * Find out what channels are RAID/SCSI. This information is used to
3946 * differentiate the virtual channels and physical channels and to support
3947 * ROMB feature and non-disk devices.
3948 */
3949 static void
3950 mega_enum_raid_scsi(adapter_t *adapter)
3951 {
3952 unsigned char raw_mbox[sizeof(struct mbox_out)];
3953 mbox_t *mbox;
3954 int i;
3955
3956 mbox = (mbox_t *)raw_mbox;
3957
3958 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3959
3960 /*
3961 * issue command to find out what channels are raid/scsi
3962 */
3963 raw_mbox[0] = CHNL_CLASS;
3964 raw_mbox[2] = GET_CHNL_CLASS;
3965
3966 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3967
3968 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3969
3970 /*
3971 * Non-ROMB firmware fail this command, so all channels
3972 * must be shown RAID
3973 */
3974 adapter->mega_ch_class = 0xFF;
3975
3976 if(!issue_scb_block(adapter, raw_mbox)) {
3977 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3978
3979 }
3980
3981 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3982 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3983 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3984 i);
3985 }
3986 else {
3987 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3988 i);
3989 }
3990 }
3991
3992 return;
3993 }
3994
3995
3996 /**
3997 * mega_get_boot_drv()
3998 * @adapter - pointer to our soft state
3999 *
4000 * Find out which device is the boot device. Note, any logical drive or any
4001 * phyical device (e.g., a CDROM) can be designated as a boot device.
4002 */
4003 static void
4004 mega_get_boot_drv(adapter_t *adapter)
4005 {
4006 struct private_bios_data *prv_bios_data;
4007 unsigned char raw_mbox[sizeof(struct mbox_out)];
4008 mbox_t *mbox;
4009 u16 cksum = 0;
4010 u8 *cksum_p;
4011 u8 boot_pdrv;
4012 int i;
4013
4014 mbox = (mbox_t *)raw_mbox;
4015
4016 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4017
4018 raw_mbox[0] = BIOS_PVT_DATA;
4019 raw_mbox[2] = GET_BIOS_PVT_DATA;
4020
4021 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4022
4023 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4024
4025 adapter->boot_ldrv_enabled = 0;
4026 adapter->boot_ldrv = 0;
4027
4028 adapter->boot_pdrv_enabled = 0;
4029 adapter->boot_pdrv_ch = 0;
4030 adapter->boot_pdrv_tgt = 0;
4031
4032 if(issue_scb_block(adapter, raw_mbox) == 0) {
4033 prv_bios_data =
4034 (struct private_bios_data *)adapter->mega_buffer;
4035
4036 cksum = 0;
4037 cksum_p = (char *)prv_bios_data;
4038 for (i = 0; i < 14; i++ ) {
4039 cksum += (u16)(*cksum_p++);
4040 }
4041
4042 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4043
4044 /*
4045 * If MSB is set, a physical drive is set as boot
4046 * device
4047 */
4048 if( prv_bios_data->boot_drv & 0x80 ) {
4049 adapter->boot_pdrv_enabled = 1;
4050 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4051 adapter->boot_pdrv_ch = boot_pdrv / 16;
4052 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4053 }
4054 else {
4055 adapter->boot_ldrv_enabled = 1;
4056 adapter->boot_ldrv = prv_bios_data->boot_drv;
4057 }
4058 }
4059 }
4060
4061 }
4062
4063 /**
4064 * mega_support_random_del()
4065 * @adapter - pointer to our soft state
4066 *
4067 * Find out if this controller supports random deletion and addition of
4068 * logical drives
4069 */
4070 static int
4071 mega_support_random_del(adapter_t *adapter)
4072 {
4073 unsigned char raw_mbox[sizeof(struct mbox_out)];
4074 mbox_t *mbox;
4075 int rval;
4076
4077 mbox = (mbox_t *)raw_mbox;
4078
4079 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4080
4081 /*
4082 * issue command
4083 */
4084 raw_mbox[0] = FC_DEL_LOGDRV;
4085 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4086
4087 rval = issue_scb_block(adapter, raw_mbox);
4088
4089 return !rval;
4090 }
4091
4092
4093 /**
4094 * mega_support_ext_cdb()
4095 * @adapter - pointer to our soft state
4096 *
4097 * Find out if this firmware support cdblen > 10
4098 */
4099 static int
4100 mega_support_ext_cdb(adapter_t *adapter)
4101 {
4102 unsigned char raw_mbox[sizeof(struct mbox_out)];
4103 mbox_t *mbox;
4104 int rval;
4105
4106 mbox = (mbox_t *)raw_mbox;
4107
4108 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4109 /*
4110 * issue command to find out if controller supports extended CDBs.
4111 */
4112 raw_mbox[0] = 0xA4;
4113 raw_mbox[2] = 0x16;
4114
4115 rval = issue_scb_block(adapter, raw_mbox);
4116
4117 return !rval;
4118 }
4119
4120
4121 /**
4122 * mega_del_logdrv()
4123 * @adapter - pointer to our soft state
4124 * @logdrv - logical drive to be deleted
4125 *
4126 * Delete the specified logical drive. It is the responsibility of the user
4127 * app to let the OS know about this operation.
4128 */
4129 static int
4130 mega_del_logdrv(adapter_t *adapter, int logdrv)
4131 {
4132 unsigned long flags;
4133 scb_t *scb;
4134 int rval;
4135
4136 /*
4137 * Stop sending commands to the controller, queue them internally.
4138 * When deletion is complete, ISR will flush the queue.
4139 */
4140 atomic_set(&adapter->quiescent, 1);
4141
4142 /*
4143 * Wait till all the issued commands are complete and there are no
4144 * commands in the pending queue
4145 */
4146 while (atomic_read(&adapter->pend_cmds) > 0 ||
4147 !list_empty(&adapter->pending_list))
4148 msleep(1000); /* sleep for 1s */
4149
4150 rval = mega_do_del_logdrv(adapter, logdrv);
4151
4152 spin_lock_irqsave(&adapter->lock, flags);
4153
4154 /*
4155 * If delete operation was successful, add 0x80 to the logical drive
4156 * ids for commands in the pending queue.
4157 */
4158 if (adapter->read_ldidmap) {
4159 struct list_head *pos;
4160 list_for_each(pos, &adapter->pending_list) {
4161 scb = list_entry(pos, scb_t, list);
4162 if (scb->pthru->logdrv < 0x80 )
4163 scb->pthru->logdrv += 0x80;
4164 }
4165 }
4166
4167 atomic_set(&adapter->quiescent, 0);
4168
4169 mega_runpendq(adapter);
4170
4171 spin_unlock_irqrestore(&adapter->lock, flags);
4172
4173 return rval;
4174 }
4175
4176
4177 static int
4178 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4179 {
4180 megacmd_t mc;
4181 int rval;
4182
4183 memset( &mc, 0, sizeof(megacmd_t));
4184
4185 mc.cmd = FC_DEL_LOGDRV;
4186 mc.opcode = OP_DEL_LOGDRV;
4187 mc.subopcode = logdrv;
4188
4189 rval = mega_internal_command(adapter, &mc, NULL);
4190
4191 /* log this event */
4192 if(rval) {
4193 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4194 return rval;
4195 }
4196
4197 /*
4198 * After deleting first logical drive, the logical drives must be
4199 * addressed by adding 0x80 to the logical drive id.
4200 */
4201 adapter->read_ldidmap = 1;
4202
4203 return rval;
4204 }
4205
4206
4207 /**
4208 * mega_get_max_sgl()
4209 * @adapter - pointer to our soft state
4210 *
4211 * Find out the maximum number of scatter-gather elements supported by this
4212 * version of the firmware
4213 */
4214 static void
4215 mega_get_max_sgl(adapter_t *adapter)
4216 {
4217 unsigned char raw_mbox[sizeof(struct mbox_out)];
4218 mbox_t *mbox;
4219
4220 mbox = (mbox_t *)raw_mbox;
4221
4222 memset(mbox, 0, sizeof(raw_mbox));
4223
4224 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4225
4226 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4227
4228 raw_mbox[0] = MAIN_MISC_OPCODE;
4229 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4230
4231
4232 if( issue_scb_block(adapter, raw_mbox) ) {
4233 /*
4234 * f/w does not support this command. Choose the default value
4235 */
4236 adapter->sglen = MIN_SGLIST;
4237 }
4238 else {
4239 adapter->sglen = *((char *)adapter->mega_buffer);
4240
4241 /*
4242 * Make sure this is not more than the resources we are
4243 * planning to allocate
4244 */
4245 if ( adapter->sglen > MAX_SGLIST )
4246 adapter->sglen = MAX_SGLIST;
4247 }
4248
4249 return;
4250 }
4251
4252
4253 /**
4254 * mega_support_cluster()
4255 * @adapter - pointer to our soft state
4256 *
4257 * Find out if this firmware support cluster calls.
4258 */
4259 static int
4260 mega_support_cluster(adapter_t *adapter)
4261 {
4262 unsigned char raw_mbox[sizeof(struct mbox_out)];
4263 mbox_t *mbox;
4264
4265 mbox = (mbox_t *)raw_mbox;
4266
4267 memset(mbox, 0, sizeof(raw_mbox));
4268
4269 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4270
4271 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4272
4273 /*
4274 * Try to get the initiator id. This command will succeed iff the
4275 * clustering is available on this HBA.
4276 */
4277 raw_mbox[0] = MEGA_GET_TARGET_ID;
4278
4279 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4280
4281 /*
4282 * Cluster support available. Get the initiator target id.
4283 * Tell our id to mid-layer too.
4284 */
4285 adapter->this_id = *(u32 *)adapter->mega_buffer;
4286 adapter->host->this_id = adapter->this_id;
4287
4288 return 1;
4289 }
4290
4291 return 0;
4292 }
4293
4294 #ifdef CONFIG_PROC_FS
4295 /**
4296 * mega_adapinq()
4297 * @adapter - pointer to our soft state
4298 * @dma_handle - DMA address of the buffer
4299 *
4300 * Issue internal comamnds while interrupts are available.
4301 * We only issue direct mailbox commands from within the driver. ioctl()
4302 * interface using these routines can issue passthru commands.
4303 */
4304 static int
4305 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4306 {
4307 megacmd_t mc;
4308
4309 memset(&mc, 0, sizeof(megacmd_t));
4310
4311 if( adapter->flag & BOARD_40LD ) {
4312 mc.cmd = FC_NEW_CONFIG;
4313 mc.opcode = NC_SUBOP_ENQUIRY3;
4314 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4315 }
4316 else {
4317 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4318 }
4319
4320 mc.xferaddr = (u32)dma_handle;
4321
4322 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4323 return -1;
4324 }
4325
4326 return 0;
4327 }
4328
4329
4330 /** mega_internal_dev_inquiry()
4331 * @adapter - pointer to our soft state
4332 * @ch - channel for this device
4333 * @tgt - ID of this device
4334 * @buf_dma_handle - DMA address of the buffer
4335 *
4336 * Issue the scsi inquiry for the specified device.
4337 */
4338 static int
4339 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4340 dma_addr_t buf_dma_handle)
4341 {
4342 mega_passthru *pthru;
4343 dma_addr_t pthru_dma_handle;
4344 megacmd_t mc;
4345 int rval;
4346 struct pci_dev *pdev;
4347
4348
4349 /*
4350 * For all internal commands, the buffer must be allocated in <4GB
4351 * address range
4352 */
4353 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4354
4355 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4356 &pthru_dma_handle);
4357
4358 if( pthru == NULL ) {
4359 free_local_pdev(pdev);
4360 return -1;
4361 }
4362
4363 pthru->timeout = 2;
4364 pthru->ars = 1;
4365 pthru->reqsenselen = 14;
4366 pthru->islogical = 0;
4367
4368 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4369
4370 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4371
4372 pthru->cdblen = 6;
4373
4374 pthru->cdb[0] = INQUIRY;
4375 pthru->cdb[1] = 0;
4376 pthru->cdb[2] = 0;
4377 pthru->cdb[3] = 0;
4378 pthru->cdb[4] = 255;
4379 pthru->cdb[5] = 0;
4380
4381
4382 pthru->dataxferaddr = (u32)buf_dma_handle;
4383 pthru->dataxferlen = 256;
4384
4385 memset(&mc, 0, sizeof(megacmd_t));
4386
4387 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4388 mc.xferaddr = (u32)pthru_dma_handle;
4389
4390 rval = mega_internal_command(adapter, &mc, pthru);
4391
4392 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4393 pthru_dma_handle);
4394
4395 free_local_pdev(pdev);
4396
4397 return rval;
4398 }
4399 #endif
4400
4401 /**
4402 * mega_internal_command()
4403 * @adapter - pointer to our soft state
4404 * @mc - the mailbox command
4405 * @pthru - Passthru structure for DCDB commands
4406 *
4407 * Issue the internal commands in interrupt mode.
4408 * The last argument is the address of the passthru structure if the command
4409 * to be fired is a passthru command
4410 *
4411 * lockscope specifies whether the caller has already acquired the lock. Of
4412 * course, the caller must know which lock we are talking about.
4413 *
4414 * Note: parameter 'pthru' is null for non-passthru commands.
4415 */
4416 static int
4417 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4418 {
4419 Scsi_Cmnd *scmd;
4420 struct scsi_device *sdev;
4421 scb_t *scb;
4422 int rval;
4423
4424 /*
4425 * The internal commands share one command id and hence are
4426 * serialized. This is so because we want to reserve maximum number of
4427 * available command ids for the I/O commands.
4428 */
4429 mutex_lock(&adapter->int_mtx);
4430
4431 scb = &adapter->int_scb;
4432 memset(scb, 0, sizeof(scb_t));
4433
4434 scmd = &adapter->int_scmd;
4435 memset(scmd, 0, sizeof(Scsi_Cmnd));
4436
4437 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
4438 scmd->device = sdev;
4439
4440 scmd->device->host = adapter->host;
4441 scmd->host_scribble = (void *)scb;
4442 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4443
4444 scb->state |= SCB_ACTIVE;
4445 scb->cmd = scmd;
4446
4447 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4448
4449 /*
4450 * Is it a passthru command
4451 */
4452 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4453
4454 scb->pthru = pthru;
4455 }
4456
4457 scb->idx = CMDID_INT_CMDS;
4458
4459 megaraid_queue(scmd, mega_internal_done);
4460
4461 wait_for_completion(&adapter->int_waitq);
4462
4463 rval = scmd->result;
4464 mc->status = scmd->result;
4465 kfree(sdev);
4466
4467 /*
4468 * Print a debug message for all failed commands. Applications can use
4469 * this information.
4470 */
4471 if( scmd->result && trace_level ) {
4472 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4473 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4474 }
4475
4476 mutex_unlock(&adapter->int_mtx);
4477
4478 return rval;
4479 }
4480
4481
4482 /**
4483 * mega_internal_done()
4484 * @scmd - internal scsi command
4485 *
4486 * Callback routine for internal commands.
4487 */
4488 static void
4489 mega_internal_done(Scsi_Cmnd *scmd)
4490 {
4491 adapter_t *adapter;
4492
4493 adapter = (adapter_t *)scmd->device->host->hostdata;
4494
4495 complete(&adapter->int_waitq);
4496
4497 }
4498
4499
4500 static struct scsi_host_template megaraid_template = {
4501 .module = THIS_MODULE,
4502 .name = "MegaRAID",
4503 .proc_name = "megaraid_legacy",
4504 .info = megaraid_info,
4505 .queuecommand = megaraid_queue,
4506 .bios_param = megaraid_biosparam,
4507 .max_sectors = MAX_SECTORS_PER_IO,
4508 .can_queue = MAX_COMMANDS,
4509 .this_id = DEFAULT_INITIATOR_ID,
4510 .sg_tablesize = MAX_SGLIST,
4511 .cmd_per_lun = DEF_CMD_PER_LUN,
4512 .use_clustering = ENABLE_CLUSTERING,
4513 .eh_abort_handler = megaraid_abort,
4514 .eh_device_reset_handler = megaraid_reset,
4515 .eh_bus_reset_handler = megaraid_reset,
4516 .eh_host_reset_handler = megaraid_reset,
4517 };
4518
4519 static int __devinit
4520 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4521 {
4522 struct Scsi_Host *host;
4523 adapter_t *adapter;
4524 unsigned long mega_baseport, tbase, flag = 0;
4525 u16 subsysid, subsysvid;
4526 u8 pci_bus, pci_dev_func;
4527 int irq, i, j;
4528 int error = -ENODEV;
4529
4530 if (pci_enable_device(pdev))
4531 goto out;
4532 pci_set_master(pdev);
4533
4534 pci_bus = pdev->bus->number;
4535 pci_dev_func = pdev->devfn;
4536
4537 /*
4538 * The megaraid3 stuff reports the ID of the Intel part which is not
4539 * remotely specific to the megaraid
4540 */
4541 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4542 u16 magic;
4543 /*
4544 * Don't fall over the Compaq management cards using the same
4545 * PCI identifier
4546 */
4547 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4548 pdev->subsystem_device == 0xC000)
4549 return -ENODEV;
4550 /* Now check the magic signature byte */
4551 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4552 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4553 return -ENODEV;
4554 /* Ok it is probably a megaraid */
4555 }
4556
4557 /*
4558 * For these vendor and device ids, signature offsets are not
4559 * valid and 64 bit is implicit
4560 */
4561 if (id->driver_data & BOARD_64BIT)
4562 flag |= BOARD_64BIT;
4563 else {
4564 u32 magic64;
4565
4566 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4567 if (magic64 == HBA_SIGNATURE_64BIT)
4568 flag |= BOARD_64BIT;
4569 }
4570
4571 subsysvid = pdev->subsystem_vendor;
4572 subsysid = pdev->subsystem_device;
4573
4574 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4575 id->vendor, id->device, pci_bus);
4576
4577 printk("slot %d:func %d\n",
4578 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4579
4580 /* Read the base port and IRQ from PCI */
4581 mega_baseport = pci_resource_start(pdev, 0);
4582 irq = pdev->irq;
4583
4584 tbase = mega_baseport;
4585 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4586 flag |= BOARD_MEMMAP;
4587
4588 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4589 printk(KERN_WARNING "megaraid: mem region busy!\n");
4590 goto out_disable_device;
4591 }
4592
4593 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4594 if (!mega_baseport) {
4595 printk(KERN_WARNING
4596 "megaraid: could not map hba memory\n");
4597 goto out_release_region;
4598 }
4599 } else {
4600 flag |= BOARD_IOMAP;
4601 mega_baseport += 0x10;
4602
4603 if (!request_region(mega_baseport, 16, "megaraid"))
4604 goto out_disable_device;
4605 }
4606
4607 /* Initialize SCSI Host structure */
4608 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4609 if (!host)
4610 goto out_iounmap;
4611
4612 adapter = (adapter_t *)host->hostdata;
4613 memset(adapter, 0, sizeof(adapter_t));
4614
4615 printk(KERN_NOTICE
4616 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4617 host->host_no, mega_baseport, irq);
4618
4619 adapter->base = mega_baseport;
4620 if (flag & BOARD_MEMMAP)
4621 adapter->mmio_base = (void __iomem *) mega_baseport;
4622
4623 INIT_LIST_HEAD(&adapter->free_list);
4624 INIT_LIST_HEAD(&adapter->pending_list);
4625 INIT_LIST_HEAD(&adapter->completed_list);
4626
4627 adapter->flag = flag;
4628 spin_lock_init(&adapter->lock);
4629
4630 host->cmd_per_lun = max_cmd_per_lun;
4631 host->max_sectors = max_sectors_per_io;
4632
4633 adapter->dev = pdev;
4634 adapter->host = host;
4635
4636 adapter->host->irq = irq;
4637
4638 if (flag & BOARD_MEMMAP)
4639 adapter->host->base = tbase;
4640 else {
4641 adapter->host->io_port = tbase;
4642 adapter->host->n_io_port = 16;
4643 }
4644
4645 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4646
4647 /*
4648 * Allocate buffer to issue internal commands.
4649 */
4650 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4651 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4652 if (!adapter->mega_buffer) {
4653 printk(KERN_WARNING "megaraid: out of RAM.\n");
4654 goto out_host_put;
4655 }
4656
4657 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4658 if (!adapter->scb_list) {
4659 printk(KERN_WARNING "megaraid: out of RAM.\n");
4660 goto out_free_cmd_buffer;
4661 }
4662
4663 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4664 megaraid_isr_memmapped : megaraid_isr_iomapped,
4665 IRQF_SHARED, "megaraid", adapter)) {
4666 printk(KERN_WARNING
4667 "megaraid: Couldn't register IRQ %d!\n", irq);
4668 goto out_free_scb_list;
4669 }
4670
4671 if (mega_setup_mailbox(adapter))
4672 goto out_free_irq;
4673
4674 if (mega_query_adapter(adapter))
4675 goto out_free_mbox;
4676
4677 /*
4678 * Have checks for some buggy f/w
4679 */
4680 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4681 /*
4682 * Which firmware
4683 */
4684 if (!strcmp(adapter->fw_version, "3.00") ||
4685 !strcmp(adapter->fw_version, "3.01")) {
4686
4687 printk( KERN_WARNING
4688 "megaraid: Your card is a Dell PERC "
4689 "2/SC RAID controller with "
4690 "firmware\nmegaraid: 3.00 or 3.01. "
4691 "This driver is known to have "
4692 "corruption issues\nmegaraid: with "
4693 "those firmware versions on this "
4694 "specific card. In order\nmegaraid: "
4695 "to protect your data, please upgrade "
4696 "your firmware to version\nmegaraid: "
4697 "3.10 or later, available from the "
4698 "Dell Technical Support web\n"
4699 "megaraid: site at\nhttp://support."
4700 "dell.com/us/en/filelib/download/"
4701 "index.asp?fileid=2940\n"
4702 );
4703 }
4704 }
4705
4706 /*
4707 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4708 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4709 * support, since this firmware cannot handle 64 bit
4710 * addressing
4711 */
4712 if ((subsysvid == HP_SUBSYS_VID) &&
4713 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4714 /*
4715 * which firmware
4716 */
4717 if (!strcmp(adapter->fw_version, "H01.07") ||
4718 !strcmp(adapter->fw_version, "H01.08") ||
4719 !strcmp(adapter->fw_version, "H01.09") ) {
4720 printk(KERN_WARNING
4721 "megaraid: Firmware H.01.07, "
4722 "H.01.08, and H.01.09 on 1M/2M "
4723 "controllers\n"
4724 "megaraid: do not support 64 bit "
4725 "addressing.\nmegaraid: DISABLING "
4726 "64 bit support.\n");
4727 adapter->flag &= ~BOARD_64BIT;
4728 }
4729 }
4730
4731 if (mega_is_bios_enabled(adapter))
4732 mega_hbas[hba_count].is_bios_enabled = 1;
4733 mega_hbas[hba_count].hostdata_addr = adapter;
4734
4735 /*
4736 * Find out which channel is raid and which is scsi. This is
4737 * for ROMB support.
4738 */
4739 mega_enum_raid_scsi(adapter);
4740
4741 /*
4742 * Find out if a logical drive is set as the boot drive. If
4743 * there is one, will make that as the first logical drive.
4744 * ROMB: Do we have to boot from a physical drive. Then all
4745 * the physical drives would appear before the logical disks.
4746 * Else, all the physical drives would be exported to the mid
4747 * layer after logical drives.
4748 */
4749 mega_get_boot_drv(adapter);
4750
4751 if (adapter->boot_pdrv_enabled) {
4752 j = adapter->product_info.nchannels;
4753 for( i = 0; i < j; i++ )
4754 adapter->logdrv_chan[i] = 0;
4755 for( i = j; i < NVIRT_CHAN + j; i++ )
4756 adapter->logdrv_chan[i] = 1;
4757 } else {
4758 for (i = 0; i < NVIRT_CHAN; i++)
4759 adapter->logdrv_chan[i] = 1;
4760 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4761 adapter->logdrv_chan[i] = 0;
4762 adapter->mega_ch_class <<= NVIRT_CHAN;
4763 }
4764
4765 /*
4766 * Do we support random deletion and addition of logical
4767 * drives
4768 */
4769 adapter->read_ldidmap = 0; /* set it after first logdrv
4770 delete cmd */
4771 adapter->support_random_del = mega_support_random_del(adapter);
4772
4773 /* Initialize SCBs */
4774 if (mega_init_scb(adapter))
4775 goto out_free_mbox;
4776
4777 /*
4778 * Reset the pending commands counter
4779 */
4780 atomic_set(&adapter->pend_cmds, 0);
4781
4782 /*
4783 * Reset the adapter quiescent flag
4784 */
4785 atomic_set(&adapter->quiescent, 0);
4786
4787 hba_soft_state[hba_count] = adapter;
4788
4789 /*
4790 * Fill in the structure which needs to be passed back to the
4791 * application when it does an ioctl() for controller related
4792 * information.
4793 */
4794 i = hba_count;
4795
4796 mcontroller[i].base = mega_baseport;
4797 mcontroller[i].irq = irq;
4798 mcontroller[i].numldrv = adapter->numldrv;
4799 mcontroller[i].pcibus = pci_bus;
4800 mcontroller[i].pcidev = id->device;
4801 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4802 mcontroller[i].pciid = -1;
4803 mcontroller[i].pcivendor = id->vendor;
4804 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4805 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4806
4807
4808 /* Set the Mode of addressing to 64 bit if we can */
4809 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4810 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4811 adapter->has_64bit_addr = 1;
4812 } else {
4813 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4814 adapter->has_64bit_addr = 0;
4815 }
4816
4817 mutex_init(&adapter->int_mtx);
4818 init_completion(&adapter->int_waitq);
4819
4820 adapter->this_id = DEFAULT_INITIATOR_ID;
4821 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4822
4823 #if MEGA_HAVE_CLUSTERING
4824 /*
4825 * Is cluster support enabled on this controller
4826 * Note: In a cluster the HBAs ( the initiators ) will have
4827 * different target IDs and we cannot assume it to be 7. Call
4828 * to mega_support_cluster() will get the target ids also if
4829 * the cluster support is available
4830 */
4831 adapter->has_cluster = mega_support_cluster(adapter);
4832 if (adapter->has_cluster) {
4833 printk(KERN_NOTICE
4834 "megaraid: Cluster driver, initiator id:%d\n",
4835 adapter->this_id);
4836 }
4837 #endif
4838
4839 pci_set_drvdata(pdev, host);
4840
4841 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4842
4843 error = scsi_add_host(host, &pdev->dev);
4844 if (error)
4845 goto out_free_mbox;
4846
4847 scsi_scan_host(host);
4848 hba_count++;
4849 return 0;
4850
4851 out_free_mbox:
4852 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4853 adapter->una_mbox64, adapter->una_mbox64_dma);
4854 out_free_irq:
4855 free_irq(adapter->host->irq, adapter);
4856 out_free_scb_list:
4857 kfree(adapter->scb_list);
4858 out_free_cmd_buffer:
4859 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4860 adapter->mega_buffer, adapter->buf_dma_handle);
4861 out_host_put:
4862 scsi_host_put(host);
4863 out_iounmap:
4864 if (flag & BOARD_MEMMAP)
4865 iounmap((void *)mega_baseport);
4866 out_release_region:
4867 if (flag & BOARD_MEMMAP)
4868 release_mem_region(tbase, 128);
4869 else
4870 release_region(mega_baseport, 16);
4871 out_disable_device:
4872 pci_disable_device(pdev);
4873 out:
4874 return error;
4875 }
4876
4877 static void
4878 __megaraid_shutdown(adapter_t *adapter)
4879 {
4880 u_char raw_mbox[sizeof(struct mbox_out)];
4881 mbox_t *mbox = (mbox_t *)raw_mbox;
4882 int i;
4883
4884 /* Flush adapter cache */
4885 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4886 raw_mbox[0] = FLUSH_ADAPTER;
4887
4888 free_irq(adapter->host->irq, adapter);
4889
4890 /* Issue a blocking (interrupts disabled) command to the card */
4891 issue_scb_block(adapter, raw_mbox);
4892
4893 /* Flush disks cache */
4894 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4895 raw_mbox[0] = FLUSH_SYSTEM;
4896
4897 /* Issue a blocking (interrupts disabled) command to the card */
4898 issue_scb_block(adapter, raw_mbox);
4899
4900 if (atomic_read(&adapter->pend_cmds) > 0)
4901 printk(KERN_WARNING "megaraid: pending commands!!\n");
4902
4903 /*
4904 * Have a delibrate delay to make sure all the caches are
4905 * actually flushed.
4906 */
4907 for (i = 0; i <= 10; i++)
4908 mdelay(1000);
4909 }
4910
4911 static void __devexit
4912 megaraid_remove_one(struct pci_dev *pdev)
4913 {
4914 struct Scsi_Host *host = pci_get_drvdata(pdev);
4915 adapter_t *adapter = (adapter_t *)host->hostdata;
4916
4917 scsi_remove_host(host);
4918
4919 __megaraid_shutdown(adapter);
4920
4921 /* Free our resources */
4922 if (adapter->flag & BOARD_MEMMAP) {
4923 iounmap((void *)adapter->base);
4924 release_mem_region(adapter->host->base, 128);
4925 } else
4926 release_region(adapter->base, 16);
4927
4928 mega_free_sgl(adapter);
4929
4930 #ifdef CONFIG_PROC_FS
4931 if (adapter->controller_proc_dir_entry) {
4932 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4933 remove_proc_entry("config",
4934 adapter->controller_proc_dir_entry);
4935 remove_proc_entry("mailbox",
4936 adapter->controller_proc_dir_entry);
4937 #if MEGA_HAVE_ENH_PROC
4938 remove_proc_entry("rebuild-rate",
4939 adapter->controller_proc_dir_entry);
4940 remove_proc_entry("battery-status",
4941 adapter->controller_proc_dir_entry);
4942
4943 remove_proc_entry("diskdrives-ch0",
4944 adapter->controller_proc_dir_entry);
4945 remove_proc_entry("diskdrives-ch1",
4946 adapter->controller_proc_dir_entry);
4947 remove_proc_entry("diskdrives-ch2",
4948 adapter->controller_proc_dir_entry);
4949 remove_proc_entry("diskdrives-ch3",
4950 adapter->controller_proc_dir_entry);
4951
4952 remove_proc_entry("raiddrives-0-9",
4953 adapter->controller_proc_dir_entry);
4954 remove_proc_entry("raiddrives-10-19",
4955 adapter->controller_proc_dir_entry);
4956 remove_proc_entry("raiddrives-20-29",
4957 adapter->controller_proc_dir_entry);
4958 remove_proc_entry("raiddrives-30-39",
4959 adapter->controller_proc_dir_entry);
4960 #endif
4961 {
4962 char buf[12] = { 0 };
4963 sprintf(buf, "hba%d", adapter->host->host_no);
4964 remove_proc_entry(buf, mega_proc_dir_entry);
4965 }
4966 }
4967 #endif
4968
4969 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4970 adapter->mega_buffer, adapter->buf_dma_handle);
4971 kfree(adapter->scb_list);
4972 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4973 adapter->una_mbox64, adapter->una_mbox64_dma);
4974
4975 scsi_host_put(host);
4976 pci_disable_device(pdev);
4977
4978 hba_count--;
4979 }
4980
4981 static void
4982 megaraid_shutdown(struct pci_dev *pdev)
4983 {
4984 struct Scsi_Host *host = pci_get_drvdata(pdev);
4985 adapter_t *adapter = (adapter_t *)host->hostdata;
4986
4987 __megaraid_shutdown(adapter);
4988 }
4989
4990 static struct pci_device_id megaraid_pci_tbl[] = {
4991 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4992 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4993 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4994 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4995 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4996 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4997 {0,}
4998 };
4999 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5000
5001 static struct pci_driver megaraid_pci_driver = {
5002 .name = "megaraid_legacy",
5003 .id_table = megaraid_pci_tbl,
5004 .probe = megaraid_probe_one,
5005 .remove = __devexit_p(megaraid_remove_one),
5006 .shutdown = megaraid_shutdown,
5007 };
5008
5009 static int __init megaraid_init(void)
5010 {
5011 int error;
5012
5013 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5014 max_cmd_per_lun = MAX_CMD_PER_LUN;
5015 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5016 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5017
5018 #ifdef CONFIG_PROC_FS
5019 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5020 if (!mega_proc_dir_entry) {
5021 printk(KERN_WARNING
5022 "megaraid: failed to create megaraid root\n");
5023 }
5024 #endif
5025 error = pci_register_driver(&megaraid_pci_driver);
5026 if (error) {
5027 #ifdef CONFIG_PROC_FS
5028 remove_proc_entry("megaraid", &proc_root);
5029 #endif
5030 return error;
5031 }
5032
5033 /*
5034 * Register the driver as a character device, for applications
5035 * to access it for ioctls.
5036 * First argument (major) to register_chrdev implies a dynamic
5037 * major number allocation.
5038 */
5039 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5040 if (!major) {
5041 printk(KERN_WARNING
5042 "megaraid: failed to register char device\n");
5043 }
5044
5045 return 0;
5046 }
5047
5048 static void __exit megaraid_exit(void)
5049 {
5050 /*
5051 * Unregister the character device interface to the driver.
5052 */
5053 unregister_chrdev(major, "megadev_legacy");
5054
5055 pci_unregister_driver(&megaraid_pci_driver);
5056
5057 #ifdef CONFIG_PROC_FS
5058 remove_proc_entry("megaraid", &proc_root);
5059 #endif
5060 }
5061
5062 module_init(megaraid_init);
5063 module_exit(megaraid_exit);
5064
5065 /* vi: set ts=8 sw=8 tw=78: */
WRT350N Kernel Patches