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bridge: fix a possible use after free
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / megaraid.c
blob5c1776406c963f996e16aac4781fe4540112d250
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 <linux/mutex.h>
50 #include <linux/slab.h>
51 #include <scsi/scsicam.h>
52
53 #include "scsi.h"
54 #include <scsi/scsi_host.h>
55
56 #include "megaraid.h"
57
58 #define MEGARAID_MODULE_VERSION "2.00.4"
59
60 MODULE_AUTHOR ("sju@lsil.com");
61 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
62 MODULE_LICENSE ("GPL");
63 MODULE_VERSION(MEGARAID_MODULE_VERSION);
64
65 static DEFINE_MUTEX(megadev_mutex);
66 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
67 module_param(max_cmd_per_lun, uint, 0);
68 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)");
69
70 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
71 module_param(max_sectors_per_io, ushort, 0);
72 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
73
74
75 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
76 module_param(max_mbox_busy_wait, ushort, 0);
77 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
78
79 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
80 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
81 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
82 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
83
84 /*
85 * Global variables
86 */
87
88 static int hba_count;
89 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
90 static struct proc_dir_entry *mega_proc_dir_entry;
91
92 /* For controller re-ordering */
93 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
94
95 static long
96 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
97
98 /*
99 * The File Operations structure for the serial/ioctl interface of the driver
100 */
101 static const struct file_operations megadev_fops = {
102 .owner = THIS_MODULE,
103 .unlocked_ioctl = megadev_unlocked_ioctl,
104 .open = megadev_open,
105 .llseek = noop_llseek,
106 };
107
108 /*
109 * Array to structures for storing the information about the controllers. This
110 * information is sent to the user level applications, when they do an ioctl
111 * for this information.
112 */
113 static struct mcontroller mcontroller[MAX_CONTROLLERS];
114
115 /* The current driver version */
116 static u32 driver_ver = 0x02000000;
117
118 /* major number used by the device for character interface */
119 static int major;
120
121 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
122
123
124 /*
125 * Debug variable to print some diagnostic messages
126 */
127 static int trace_level;
128
129 /**
130 * mega_setup_mailbox()
131 * @adapter - pointer to our soft state
132 *
133 * Allocates a 8 byte aligned memory for the handshake mailbox.
134 */
135 static int
136 mega_setup_mailbox(adapter_t *adapter)
137 {
138 unsigned long align;
139
140 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
141 sizeof(mbox64_t), &adapter->una_mbox64_dma);
142
143 if( !adapter->una_mbox64 ) return -1;
144
145 adapter->mbox = &adapter->una_mbox64->mbox;
146
147 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
148 (~0UL ^ 0xFUL));
149
150 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
151
152 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
153
154 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
155
156 /*
157 * Register the mailbox if the controller is an io-mapped controller
158 */
159 if( adapter->flag & BOARD_IOMAP ) {
160
161 outb(adapter->mbox_dma & 0xFF,
162 adapter->host->io_port + MBOX_PORT0);
163
164 outb((adapter->mbox_dma >> 8) & 0xFF,
165 adapter->host->io_port + MBOX_PORT1);
166
167 outb((adapter->mbox_dma >> 16) & 0xFF,
168 adapter->host->io_port + MBOX_PORT2);
169
170 outb((adapter->mbox_dma >> 24) & 0xFF,
171 adapter->host->io_port + MBOX_PORT3);
172
173 outb(ENABLE_MBOX_BYTE,
174 adapter->host->io_port + ENABLE_MBOX_REGION);
175
176 irq_ack(adapter);
177
178 irq_enable(adapter);
179 }
180
181 return 0;
182 }
183
184
185 /*
186 * mega_query_adapter()
187 * @adapter - pointer to our soft state
188 *
189 * Issue the adapter inquiry commands to the controller and find out
190 * information and parameter about the devices attached
191 */
192 static int
193 mega_query_adapter(adapter_t *adapter)
194 {
195 dma_addr_t prod_info_dma_handle;
196 mega_inquiry3 *inquiry3;
197 u8 raw_mbox[sizeof(struct mbox_out)];
198 mbox_t *mbox;
199 int retval;
200
201 /* Initialize adapter inquiry mailbox */
202
203 mbox = (mbox_t *)raw_mbox;
204
205 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
206 memset(&mbox->m_out, 0, sizeof(raw_mbox));
207
208 /*
209 * Try to issue Inquiry3 command
210 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
211 * update enquiry3 structure
212 */
213 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
214
215 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
216
217 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
218 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
219 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
220
221 /* Issue a blocking command to the card */
222 if ((retval = issue_scb_block(adapter, raw_mbox))) {
223 /* the adapter does not support 40ld */
224
225 mraid_ext_inquiry *ext_inq;
226 mraid_inquiry *inq;
227 dma_addr_t dma_handle;
228
229 ext_inq = pci_alloc_consistent(adapter->dev,
230 sizeof(mraid_ext_inquiry), &dma_handle);
231
232 if( ext_inq == NULL ) return -1;
233
234 inq = &ext_inq->raid_inq;
235
236 mbox->m_out.xferaddr = (u32)dma_handle;
237
238 /*issue old 0x04 command to adapter */
239 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
240
241 issue_scb_block(adapter, raw_mbox);
242
243 /*
244 * update Enquiry3 and ProductInfo structures with
245 * mraid_inquiry structure
246 */
247 mega_8_to_40ld(inq, inquiry3,
248 (mega_product_info *)&adapter->product_info);
249
250 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
251 ext_inq, dma_handle);
252
253 } else { /*adapter supports 40ld */
254 adapter->flag |= BOARD_40LD;
255
256 /*
257 * get product_info, which is static information and will be
258 * unchanged
259 */
260 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
261 &adapter->product_info,
262 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
263
264 mbox->m_out.xferaddr = prod_info_dma_handle;
265
266 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
267 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
268
269 if ((retval = issue_scb_block(adapter, raw_mbox)))
270 printk(KERN_WARNING
271 "megaraid: Product_info cmd failed with error: %d\n",
272 retval);
273
274 pci_unmap_single(adapter->dev, prod_info_dma_handle,
275 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
276 }
277
278
279 /*
280 * kernel scans the channels from 0 to <= max_channel
281 */
282 adapter->host->max_channel =
283 adapter->product_info.nchannels + NVIRT_CHAN -1;
284
285 adapter->host->max_id = 16; /* max targets per channel */
286
287 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
288
289 adapter->host->cmd_per_lun = max_cmd_per_lun;
290
291 adapter->numldrv = inquiry3->num_ldrv;
292
293 adapter->max_cmds = adapter->product_info.max_commands;
294
295 if(adapter->max_cmds > MAX_COMMANDS)
296 adapter->max_cmds = MAX_COMMANDS;
297
298 adapter->host->can_queue = adapter->max_cmds - 1;
299
300 /*
301 * Get the maximum number of scatter-gather elements supported by this
302 * firmware
303 */
304 mega_get_max_sgl(adapter);
305
306 adapter->host->sg_tablesize = adapter->sglen;
307
308
309 /* use HP firmware and bios version encoding */
310 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
311 sprintf (adapter->fw_version, "%c%d%d.%d%d",
312 adapter->product_info.fw_version[2],
313 adapter->product_info.fw_version[1] >> 8,
314 adapter->product_info.fw_version[1] & 0x0f,
315 adapter->product_info.fw_version[0] >> 8,
316 adapter->product_info.fw_version[0] & 0x0f);
317 sprintf (adapter->bios_version, "%c%d%d.%d%d",
318 adapter->product_info.bios_version[2],
319 adapter->product_info.bios_version[1] >> 8,
320 adapter->product_info.bios_version[1] & 0x0f,
321 adapter->product_info.bios_version[0] >> 8,
322 adapter->product_info.bios_version[0] & 0x0f);
323 } else {
324 memcpy(adapter->fw_version,
325 (char *)adapter->product_info.fw_version, 4);
326 adapter->fw_version[4] = 0;
327
328 memcpy(adapter->bios_version,
329 (char *)adapter->product_info.bios_version, 4);
330
331 adapter->bios_version[4] = 0;
332 }
333
334 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
335 adapter->fw_version, adapter->bios_version, adapter->numldrv);
336
337 /*
338 * Do we support extended (>10 bytes) cdbs
339 */
340 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
341 if (adapter->support_ext_cdb)
342 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
343
344
345 return 0;
346 }
347
348 /**
349 * mega_runpendq()
350 * @adapter - pointer to our soft state
351 *
352 * Runs through the list of pending requests.
353 */
354 static inline void
355 mega_runpendq(adapter_t *adapter)
356 {
357 if(!list_empty(&adapter->pending_list))
358 __mega_runpendq(adapter);
359 }
360
361 /*
362 * megaraid_queue()
363 * @scmd - Issue this scsi command
364 * @done - the callback hook into the scsi mid-layer
365 *
366 * The command queuing entry point for the mid-layer.
367 */
368 static int
369 megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
370 {
371 adapter_t *adapter;
372 scb_t *scb;
373 int busy=0;
374 unsigned long flags;
375
376 adapter = (adapter_t *)scmd->device->host->hostdata;
377
378 scmd->scsi_done = done;
379
380
381 /*
382 * Allocate and build a SCB request
383 * busy flag will be set if mega_build_cmd() command could not
384 * allocate scb. We will return non-zero status in that case.
385 * NOTE: scb can be null even though certain commands completed
386 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
387 * return 0 in that case.
388 */
389
390 spin_lock_irqsave(&adapter->lock, flags);
391 scb = mega_build_cmd(adapter, scmd, &busy);
392 if (!scb)
393 goto out;
394
395 scb->state |= SCB_PENDQ;
396 list_add_tail(&scb->list, &adapter->pending_list);
397
398 /*
399 * Check if the HBA is in quiescent state, e.g., during a
400 * delete logical drive opertion. If it is, don't run
401 * the pending_list.
402 */
403 if (atomic_read(&adapter->quiescent) == 0)
404 mega_runpendq(adapter);
405
406 busy = 0;
407 out:
408 spin_unlock_irqrestore(&adapter->lock, flags);
409 return busy;
410 }
411
412 static DEF_SCSI_QCMD(megaraid_queue)
413
414 /**
415 * mega_allocate_scb()
416 * @adapter - pointer to our soft state
417 * @cmd - scsi command from the mid-layer
418 *
419 * Allocate a SCB structure. This is the central structure for controller
420 * commands.
421 */
422 static inline scb_t *
423 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
424 {
425 struct list_head *head = &adapter->free_list;
426 scb_t *scb;
427
428 /* Unlink command from Free List */
429 if( !list_empty(head) ) {
430
431 scb = list_entry(head->next, scb_t, list);
432
433 list_del_init(head->next);
434
435 scb->state = SCB_ACTIVE;
436 scb->cmd = cmd;
437 scb->dma_type = MEGA_DMA_TYPE_NONE;
438
439 return scb;
440 }
441
442 return NULL;
443 }
444
445 /**
446 * mega_get_ldrv_num()
447 * @adapter - pointer to our soft state
448 * @cmd - scsi mid layer command
449 * @channel - channel on the controller
450 *
451 * Calculate the logical drive number based on the information in scsi command
452 * and the channel number.
453 */
454 static inline int
455 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
456 {
457 int tgt;
458 int ldrv_num;
459
460 tgt = cmd->device->id;
461
462 if ( tgt > adapter->this_id )
463 tgt--; /* we do not get inquires for initiator id */
464
465 ldrv_num = (channel * 15) + tgt;
466
467
468 /*
469 * If we have a logical drive with boot enabled, project it first
470 */
471 if( adapter->boot_ldrv_enabled ) {
472 if( ldrv_num == 0 ) {
473 ldrv_num = adapter->boot_ldrv;
474 }
475 else {
476 if( ldrv_num <= adapter->boot_ldrv ) {
477 ldrv_num--;
478 }
479 }
480 }
481
482 /*
483 * If "delete logical drive" feature is enabled on this controller.
484 * Do only if at least one delete logical drive operation was done.
485 *
486 * Also, after logical drive deletion, instead of logical drive number,
487 * the value returned should be 0x80+logical drive id.
488 *
489 * These is valid only for IO commands.
490 */
491
492 if (adapter->support_random_del && adapter->read_ldidmap )
493 switch (cmd->cmnd[0]) {
494 case READ_6: /* fall through */
495 case WRITE_6: /* fall through */
496 case READ_10: /* fall through */
497 case WRITE_10:
498 ldrv_num += 0x80;
499 }
500
501 return ldrv_num;
502 }
503
504 /**
505 * mega_build_cmd()
506 * @adapter - pointer to our soft state
507 * @cmd - Prepare using this scsi command
508 * @busy - busy flag if no resources
509 *
510 * Prepares a command and scatter gather list for the controller. This routine
511 * also finds out if the commands is intended for a logical drive or a
512 * physical device and prepares the controller command accordingly.
513 *
514 * We also re-order the logical drives and physical devices based on their
515 * boot settings.
516 */
517 static scb_t *
518 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
519 {
520 mega_ext_passthru *epthru;
521 mega_passthru *pthru;
522 scb_t *scb;
523 mbox_t *mbox;
524 long seg;
525 char islogical;
526 int max_ldrv_num;
527 int channel = 0;
528 int target = 0;
529 int ldrv_num = 0; /* logical drive number */
530
531
532 /*
533 * filter the internal and ioctl commands
534 */
535 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
536 return (scb_t *)cmd->host_scribble;
537
538 /*
539 * We know what channels our logical drives are on - mega_find_card()
540 */
541 islogical = adapter->logdrv_chan[cmd->device->channel];
542
543 /*
544 * The theory: If physical drive is chosen for boot, all the physical
545 * devices are exported before the logical drives, otherwise physical
546 * devices are pushed after logical drives, in which case - Kernel sees
547 * the physical devices on virtual channel which is obviously converted
548 * to actual channel on the HBA.
549 */
550 if( adapter->boot_pdrv_enabled ) {
551 if( islogical ) {
552 /* logical channel */
553 channel = cmd->device->channel -
554 adapter->product_info.nchannels;
555 }
556 else {
557 /* this is physical channel */
558 channel = cmd->device->channel;
559 target = cmd->device->id;
560
561 /*
562 * boot from a physical disk, that disk needs to be
563 * exposed first IF both the channels are SCSI, then
564 * booting from the second channel is not allowed.
565 */
566 if( target == 0 ) {
567 target = adapter->boot_pdrv_tgt;
568 }
569 else if( target == adapter->boot_pdrv_tgt ) {
570 target = 0;
571 }
572 }
573 }
574 else {
575 if( islogical ) {
576 /* this is the logical channel */
577 channel = cmd->device->channel;
578 }
579 else {
580 /* physical channel */
581 channel = cmd->device->channel - NVIRT_CHAN;
582 target = cmd->device->id;
583 }
584 }
585
586
587 if(islogical) {
588
589 /* have just LUN 0 for each target on virtual channels */
590 if (cmd->device->lun) {
591 cmd->result = (DID_BAD_TARGET << 16);
592 cmd->scsi_done(cmd);
593 return NULL;
594 }
595
596 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
597
598
599 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
600 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
601
602 /*
603 * max_ldrv_num increases by 0x80 if some logical drive was
604 * deleted.
605 */
606 if(adapter->read_ldidmap)
607 max_ldrv_num += 0x80;
608
609 if(ldrv_num > max_ldrv_num ) {
610 cmd->result = (DID_BAD_TARGET << 16);
611 cmd->scsi_done(cmd);
612 return NULL;
613 }
614
615 }
616 else {
617 if( cmd->device->lun > 7) {
618 /*
619 * Do not support lun >7 for physically accessed
620 * devices
621 */
622 cmd->result = (DID_BAD_TARGET << 16);
623 cmd->scsi_done(cmd);
624 return NULL;
625 }
626 }
627
628 /*
629 *
630 * Logical drive commands
631 *
632 */
633 if(islogical) {
634 switch (cmd->cmnd[0]) {
635 case TEST_UNIT_READY:
636 #if MEGA_HAVE_CLUSTERING
637 /*
638 * Do we support clustering and is the support enabled
639 * If no, return success always
640 */
641 if( !adapter->has_cluster ) {
642 cmd->result = (DID_OK << 16);
643 cmd->scsi_done(cmd);
644 return NULL;
645 }
646
647 if(!(scb = mega_allocate_scb(adapter, cmd))) {
648 *busy = 1;
649 return NULL;
650 }
651
652 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
653 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
654 scb->raw_mbox[3] = ldrv_num;
655
656 scb->dma_direction = PCI_DMA_NONE;
657
658 return scb;
659 #else
660 cmd->result = (DID_OK << 16);
661 cmd->scsi_done(cmd);
662 return NULL;
663 #endif
664
665 case MODE_SENSE: {
666 char *buf;
667 struct scatterlist *sg;
668
669 sg = scsi_sglist(cmd);
670 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
671
672 memset(buf, 0, cmd->cmnd[4]);
673 kunmap_atomic(buf - sg->offset, KM_IRQ0);
674
675 cmd->result = (DID_OK << 16);
676 cmd->scsi_done(cmd);
677 return NULL;
678 }
679
680 case READ_CAPACITY:
681 case INQUIRY:
682
683 if(!(adapter->flag & (1L << cmd->device->channel))) {
684
685 printk(KERN_NOTICE
686 "scsi%d: scanning scsi channel %d ",
687 adapter->host->host_no,
688 cmd->device->channel);
689 printk("for logical drives.\n");
690
691 adapter->flag |= (1L << cmd->device->channel);
692 }
693
694 /* Allocate a SCB and initialize passthru */
695 if(!(scb = mega_allocate_scb(adapter, cmd))) {
696 *busy = 1;
697 return NULL;
698 }
699 pthru = scb->pthru;
700
701 mbox = (mbox_t *)scb->raw_mbox;
702 memset(mbox, 0, sizeof(scb->raw_mbox));
703 memset(pthru, 0, sizeof(mega_passthru));
704
705 pthru->timeout = 0;
706 pthru->ars = 1;
707 pthru->reqsenselen = 14;
708 pthru->islogical = 1;
709 pthru->logdrv = ldrv_num;
710 pthru->cdblen = cmd->cmd_len;
711 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
712
713 if( adapter->has_64bit_addr ) {
714 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
715 }
716 else {
717 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
718 }
719
720 scb->dma_direction = PCI_DMA_FROMDEVICE;
721
722 pthru->numsgelements = mega_build_sglist(adapter, scb,
723 &pthru->dataxferaddr, &pthru->dataxferlen);
724
725 mbox->m_out.xferaddr = scb->pthru_dma_addr;
726
727 return scb;
728
729 case READ_6:
730 case WRITE_6:
731 case READ_10:
732 case WRITE_10:
733 case READ_12:
734 case WRITE_12:
735
736 /* Allocate a SCB and initialize mailbox */
737 if(!(scb = mega_allocate_scb(adapter, cmd))) {
738 *busy = 1;
739 return NULL;
740 }
741 mbox = (mbox_t *)scb->raw_mbox;
742
743 memset(mbox, 0, sizeof(scb->raw_mbox));
744 mbox->m_out.logdrv = ldrv_num;
745
746 /*
747 * A little hack: 2nd bit is zero for all scsi read
748 * commands and is set for all scsi write commands
749 */
750 if( adapter->has_64bit_addr ) {
751 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
752 MEGA_MBOXCMD_LWRITE64:
753 MEGA_MBOXCMD_LREAD64 ;
754 }
755 else {
756 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
757 MEGA_MBOXCMD_LWRITE:
758 MEGA_MBOXCMD_LREAD ;
759 }
760
761 /*
762 * 6-byte READ(0x08) or WRITE(0x0A) cdb
763 */
764 if( cmd->cmd_len == 6 ) {
765 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
766 mbox->m_out.lba =
767 ((u32)cmd->cmnd[1] << 16) |
768 ((u32)cmd->cmnd[2] << 8) |
769 (u32)cmd->cmnd[3];
770
771 mbox->m_out.lba &= 0x1FFFFF;
772
773 #if MEGA_HAVE_STATS
774 /*
775 * Take modulo 0x80, since the logical drive
776 * number increases by 0x80 when a logical
777 * drive was deleted
778 */
779 if (*cmd->cmnd == READ_6) {
780 adapter->nreads[ldrv_num%0x80]++;
781 adapter->nreadblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 } else {
784 adapter->nwrites[ldrv_num%0x80]++;
785 adapter->nwriteblocks[ldrv_num%0x80] +=
786 mbox->m_out.numsectors;
787 }
788 #endif
789 }
790
791 /*
792 * 10-byte READ(0x28) or WRITE(0x2A) cdb
793 */
794 if( cmd->cmd_len == 10 ) {
795 mbox->m_out.numsectors =
796 (u32)cmd->cmnd[8] |
797 ((u32)cmd->cmnd[7] << 8);
798 mbox->m_out.lba =
799 ((u32)cmd->cmnd[2] << 24) |
800 ((u32)cmd->cmnd[3] << 16) |
801 ((u32)cmd->cmnd[4] << 8) |
802 (u32)cmd->cmnd[5];
803
804 #if MEGA_HAVE_STATS
805 if (*cmd->cmnd == READ_10) {
806 adapter->nreads[ldrv_num%0x80]++;
807 adapter->nreadblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 } else {
810 adapter->nwrites[ldrv_num%0x80]++;
811 adapter->nwriteblocks[ldrv_num%0x80] +=
812 mbox->m_out.numsectors;
813 }
814 #endif
815 }
816
817 /*
818 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
819 */
820 if( cmd->cmd_len == 12 ) {
821 mbox->m_out.lba =
822 ((u32)cmd->cmnd[2] << 24) |
823 ((u32)cmd->cmnd[3] << 16) |
824 ((u32)cmd->cmnd[4] << 8) |
825 (u32)cmd->cmnd[5];
826
827 mbox->m_out.numsectors =
828 ((u32)cmd->cmnd[6] << 24) |
829 ((u32)cmd->cmnd[7] << 16) |
830 ((u32)cmd->cmnd[8] << 8) |
831 (u32)cmd->cmnd[9];
832
833 #if MEGA_HAVE_STATS
834 if (*cmd->cmnd == READ_12) {
835 adapter->nreads[ldrv_num%0x80]++;
836 adapter->nreadblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 } else {
839 adapter->nwrites[ldrv_num%0x80]++;
840 adapter->nwriteblocks[ldrv_num%0x80] +=
841 mbox->m_out.numsectors;
842 }
843 #endif
844 }
845
846 /*
847 * If it is a read command
848 */
849 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
850 scb->dma_direction = PCI_DMA_FROMDEVICE;
851 }
852 else {
853 scb->dma_direction = PCI_DMA_TODEVICE;
854 }
855
856 /* Calculate Scatter-Gather info */
857 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
858 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
859
860 return scb;
861
862 #if MEGA_HAVE_CLUSTERING
863 case RESERVE: /* Fall through */
864 case RELEASE:
865
866 /*
867 * Do we support clustering and is the support enabled
868 */
869 if( ! adapter->has_cluster ) {
870
871 cmd->result = (DID_BAD_TARGET << 16);
872 cmd->scsi_done(cmd);
873 return NULL;
874 }
875
876 /* Allocate a SCB and initialize mailbox */
877 if(!(scb = mega_allocate_scb(adapter, cmd))) {
878 *busy = 1;
879 return NULL;
880 }
881
882 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
883 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
884 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
885
886 scb->raw_mbox[3] = ldrv_num;
887
888 scb->dma_direction = PCI_DMA_NONE;
889
890 return scb;
891 #endif
892
893 default:
894 cmd->result = (DID_BAD_TARGET << 16);
895 cmd->scsi_done(cmd);
896 return NULL;
897 }
898 }
899
900 /*
901 * Passthru drive commands
902 */
903 else {
904 /* Allocate a SCB and initialize passthru */
905 if(!(scb = mega_allocate_scb(adapter, cmd))) {
906 *busy = 1;
907 return NULL;
908 }
909
910 mbox = (mbox_t *)scb->raw_mbox;
911 memset(mbox, 0, sizeof(scb->raw_mbox));
912
913 if( adapter->support_ext_cdb ) {
914
915 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
916 channel, target);
917
918 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
919
920 mbox->m_out.xferaddr = scb->epthru_dma_addr;
921
922 }
923 else {
924
925 pthru = mega_prepare_passthru(adapter, scb, cmd,
926 channel, target);
927
928 /* Initialize mailbox */
929 if( adapter->has_64bit_addr ) {
930 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
931 }
932 else {
933 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
934 }
935
936 mbox->m_out.xferaddr = scb->pthru_dma_addr;
937
938 }
939 return scb;
940 }
941 return NULL;
942 }
943
944
945 /**
946 * mega_prepare_passthru()
947 * @adapter - pointer to our soft state
948 * @scb - our scsi control block
949 * @cmd - scsi command from the mid-layer
950 * @channel - actual channel on the controller
951 * @target - actual id on the controller.
952 *
953 * prepare a command for the scsi physical devices.
954 */
955 static mega_passthru *
956 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
957 int channel, int target)
958 {
959 mega_passthru *pthru;
960
961 pthru = scb->pthru;
962 memset(pthru, 0, sizeof (mega_passthru));
963
964 /* 0=6sec/1=60sec/2=10min/3=3hrs */
965 pthru->timeout = 2;
966
967 pthru->ars = 1;
968 pthru->reqsenselen = 14;
969 pthru->islogical = 0;
970
971 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
972
973 pthru->target = (adapter->flag & BOARD_40LD) ?
974 (channel << 4) | target : target;
975
976 pthru->cdblen = cmd->cmd_len;
977 pthru->logdrv = cmd->device->lun;
978
979 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
980
981 /* Not sure about the direction */
982 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
983
984 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
985 switch (cmd->cmnd[0]) {
986 case INQUIRY:
987 case READ_CAPACITY:
988 if(!(adapter->flag & (1L << cmd->device->channel))) {
989
990 printk(KERN_NOTICE
991 "scsi%d: scanning scsi channel %d [P%d] ",
992 adapter->host->host_no,
993 cmd->device->channel, channel);
994 printk("for physical devices.\n");
995
996 adapter->flag |= (1L << cmd->device->channel);
997 }
998 /* Fall through */
999 default:
1000 pthru->numsgelements = mega_build_sglist(adapter, scb,
1001 &pthru->dataxferaddr, &pthru->dataxferlen);
1002 break;
1003 }
1004 return pthru;
1005 }
1006
1007
1008 /**
1009 * mega_prepare_extpassthru()
1010 * @adapter - pointer to our soft state
1011 * @scb - our scsi control block
1012 * @cmd - scsi command from the mid-layer
1013 * @channel - actual channel on the controller
1014 * @target - actual id on the controller.
1015 *
1016 * prepare a command for the scsi physical devices. This rountine prepares
1017 * commands for devices which can take extended CDBs (>10 bytes)
1018 */
1019 static mega_ext_passthru *
1020 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1021 int channel, int target)
1022 {
1023 mega_ext_passthru *epthru;
1024
1025 epthru = scb->epthru;
1026 memset(epthru, 0, sizeof(mega_ext_passthru));
1027
1028 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1029 epthru->timeout = 2;
1030
1031 epthru->ars = 1;
1032 epthru->reqsenselen = 14;
1033 epthru->islogical = 0;
1034
1035 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1036 epthru->target = (adapter->flag & BOARD_40LD) ?
1037 (channel << 4) | target : target;
1038
1039 epthru->cdblen = cmd->cmd_len;
1040 epthru->logdrv = cmd->device->lun;
1041
1042 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1043
1044 /* Not sure about the direction */
1045 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1046
1047 switch(cmd->cmnd[0]) {
1048 case INQUIRY:
1049 case READ_CAPACITY:
1050 if(!(adapter->flag & (1L << cmd->device->channel))) {
1051
1052 printk(KERN_NOTICE
1053 "scsi%d: scanning scsi channel %d [P%d] ",
1054 adapter->host->host_no,
1055 cmd->device->channel, channel);
1056 printk("for physical devices.\n");
1057
1058 adapter->flag |= (1L << cmd->device->channel);
1059 }
1060 /* Fall through */
1061 default:
1062 epthru->numsgelements = mega_build_sglist(adapter, scb,
1063 &epthru->dataxferaddr, &epthru->dataxferlen);
1064 break;
1065 }
1066
1067 return epthru;
1068 }
1069
1070 static void
1071 __mega_runpendq(adapter_t *adapter)
1072 {
1073 scb_t *scb;
1074 struct list_head *pos, *next;
1075
1076 /* Issue any pending commands to the card */
1077 list_for_each_safe(pos, next, &adapter->pending_list) {
1078
1079 scb = list_entry(pos, scb_t, list);
1080
1081 if( !(scb->state & SCB_ISSUED) ) {
1082
1083 if( issue_scb(adapter, scb) != 0 )
1084 return;
1085 }
1086 }
1087
1088 return;
1089 }
1090
1091
1092 /**
1093 * issue_scb()
1094 * @adapter - pointer to our soft state
1095 * @scb - scsi control block
1096 *
1097 * Post a command to the card if the mailbox is available, otherwise return
1098 * busy. We also take the scb from the pending list if the mailbox is
1099 * available.
1100 */
1101 static int
1102 issue_scb(adapter_t *adapter, scb_t *scb)
1103 {
1104 volatile mbox64_t *mbox64 = adapter->mbox64;
1105 volatile mbox_t *mbox = adapter->mbox;
1106 unsigned int i = 0;
1107
1108 if(unlikely(mbox->m_in.busy)) {
1109 do {
1110 udelay(1);
1111 i++;
1112 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1113
1114 if(mbox->m_in.busy) return -1;
1115 }
1116
1117 /* Copy mailbox data into host structure */
1118 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1119 sizeof(struct mbox_out));
1120
1121 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1122 mbox->m_in.busy = 1; /* Set busy */
1123
1124
1125 /*
1126 * Increment the pending queue counter
1127 */
1128 atomic_inc(&adapter->pend_cmds);
1129
1130 switch (mbox->m_out.cmd) {
1131 case MEGA_MBOXCMD_LREAD64:
1132 case MEGA_MBOXCMD_LWRITE64:
1133 case MEGA_MBOXCMD_PASSTHRU64:
1134 case MEGA_MBOXCMD_EXTPTHRU:
1135 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1136 mbox64->xfer_segment_hi = 0;
1137 mbox->m_out.xferaddr = 0xFFFFFFFF;
1138 break;
1139 default:
1140 mbox64->xfer_segment_lo = 0;
1141 mbox64->xfer_segment_hi = 0;
1142 }
1143
1144 /*
1145 * post the command
1146 */
1147 scb->state |= SCB_ISSUED;
1148
1149 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1150 mbox->m_in.poll = 0;
1151 mbox->m_in.ack = 0;
1152 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1153 }
1154 else {
1155 irq_enable(adapter);
1156 issue_command(adapter);
1157 }
1158
1159 return 0;
1160 }
1161
1162 /*
1163 * Wait until the controller's mailbox is available
1164 */
1165 static inline int
1166 mega_busywait_mbox (adapter_t *adapter)
1167 {
1168 if (adapter->mbox->m_in.busy)
1169 return __mega_busywait_mbox(adapter);
1170 return 0;
1171 }
1172
1173 /**
1174 * issue_scb_block()
1175 * @adapter - pointer to our soft state
1176 * @raw_mbox - the mailbox
1177 *
1178 * Issue a scb in synchronous and non-interrupt mode
1179 */
1180 static int
1181 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1182 {
1183 volatile mbox64_t *mbox64 = adapter->mbox64;
1184 volatile mbox_t *mbox = adapter->mbox;
1185 u8 byte;
1186
1187 /* Wait until mailbox is free */
1188 if(mega_busywait_mbox (adapter))
1189 goto bug_blocked_mailbox;
1190
1191 /* Copy mailbox data into host structure */
1192 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1193 mbox->m_out.cmdid = 0xFE;
1194 mbox->m_in.busy = 1;
1195
1196 switch (raw_mbox[0]) {
1197 case MEGA_MBOXCMD_LREAD64:
1198 case MEGA_MBOXCMD_LWRITE64:
1199 case MEGA_MBOXCMD_PASSTHRU64:
1200 case MEGA_MBOXCMD_EXTPTHRU:
1201 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1202 mbox64->xfer_segment_hi = 0;
1203 mbox->m_out.xferaddr = 0xFFFFFFFF;
1204 break;
1205 default:
1206 mbox64->xfer_segment_lo = 0;
1207 mbox64->xfer_segment_hi = 0;
1208 }
1209
1210 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1211 mbox->m_in.poll = 0;
1212 mbox->m_in.ack = 0;
1213 mbox->m_in.numstatus = 0xFF;
1214 mbox->m_in.status = 0xFF;
1215 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1216
1217 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1218 cpu_relax();
1219
1220 mbox->m_in.numstatus = 0xFF;
1221
1222 while( (volatile u8)mbox->m_in.poll != 0x77 )
1223 cpu_relax();
1224
1225 mbox->m_in.poll = 0;
1226 mbox->m_in.ack = 0x77;
1227
1228 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1229
1230 while(RDINDOOR(adapter) & 0x2)
1231 cpu_relax();
1232 }
1233 else {
1234 irq_disable(adapter);
1235 issue_command(adapter);
1236
1237 while (!((byte = irq_state(adapter)) & INTR_VALID))
1238 cpu_relax();
1239
1240 set_irq_state(adapter, byte);
1241 irq_enable(adapter);
1242 irq_ack(adapter);
1243 }
1244
1245 return mbox->m_in.status;
1246
1247 bug_blocked_mailbox:
1248 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1249 udelay (1000);
1250 return -1;
1251 }
1252
1253
1254 /**
1255 * megaraid_isr_iomapped()
1256 * @irq - irq
1257 * @devp - pointer to our soft state
1258 *
1259 * Interrupt service routine for io-mapped controllers.
1260 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1261 * and service the completed commands.
1262 */
1263 static irqreturn_t
1264 megaraid_isr_iomapped(int irq, void *devp)
1265 {
1266 adapter_t *adapter = devp;
1267 unsigned long flags;
1268 u8 status;
1269 u8 nstatus;
1270 u8 completed[MAX_FIRMWARE_STATUS];
1271 u8 byte;
1272 int handled = 0;
1273
1274
1275 /*
1276 * loop till F/W has more commands for us to complete.
1277 */
1278 spin_lock_irqsave(&adapter->lock, flags);
1279
1280 do {
1281 /* Check if a valid interrupt is pending */
1282 byte = irq_state(adapter);
1283 if( (byte & VALID_INTR_BYTE) == 0 ) {
1284 /*
1285 * No more pending commands
1286 */
1287 goto out_unlock;
1288 }
1289 set_irq_state(adapter, byte);
1290
1291 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1292 == 0xFF)
1293 cpu_relax();
1294 adapter->mbox->m_in.numstatus = 0xFF;
1295
1296 status = adapter->mbox->m_in.status;
1297
1298 /*
1299 * decrement the pending queue counter
1300 */
1301 atomic_sub(nstatus, &adapter->pend_cmds);
1302
1303 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1304 nstatus);
1305
1306 /* Acknowledge interrupt */
1307 irq_ack(adapter);
1308
1309 mega_cmd_done(adapter, completed, nstatus, status);
1310
1311 mega_rundoneq(adapter);
1312
1313 handled = 1;
1314
1315 /* Loop through any pending requests */
1316 if(atomic_read(&adapter->quiescent) == 0) {
1317 mega_runpendq(adapter);
1318 }
1319
1320 } while(1);
1321
1322 out_unlock:
1323
1324 spin_unlock_irqrestore(&adapter->lock, flags);
1325
1326 return IRQ_RETVAL(handled);
1327 }
1328
1329
1330 /**
1331 * megaraid_isr_memmapped()
1332 * @irq - irq
1333 * @devp - pointer to our soft state
1334 *
1335 * Interrupt service routine for memory-mapped controllers.
1336 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1337 * and service the completed commands.
1338 */
1339 static irqreturn_t
1340 megaraid_isr_memmapped(int irq, void *devp)
1341 {
1342 adapter_t *adapter = devp;
1343 unsigned long flags;
1344 u8 status;
1345 u32 dword = 0;
1346 u8 nstatus;
1347 u8 completed[MAX_FIRMWARE_STATUS];
1348 int handled = 0;
1349
1350
1351 /*
1352 * loop till F/W has more commands for us to complete.
1353 */
1354 spin_lock_irqsave(&adapter->lock, flags);
1355
1356 do {
1357 /* Check if a valid interrupt is pending */
1358 dword = RDOUTDOOR(adapter);
1359 if(dword != 0x10001234) {
1360 /*
1361 * No more pending commands
1362 */
1363 goto out_unlock;
1364 }
1365 WROUTDOOR(adapter, 0x10001234);
1366
1367 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1368 == 0xFF) {
1369 cpu_relax();
1370 }
1371 adapter->mbox->m_in.numstatus = 0xFF;
1372
1373 status = adapter->mbox->m_in.status;
1374
1375 /*
1376 * decrement the pending queue counter
1377 */
1378 atomic_sub(nstatus, &adapter->pend_cmds);
1379
1380 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1381 nstatus);
1382
1383 /* Acknowledge interrupt */
1384 WRINDOOR(adapter, 0x2);
1385
1386 handled = 1;
1387
1388 while( RDINDOOR(adapter) & 0x02 )
1389 cpu_relax();
1390
1391 mega_cmd_done(adapter, completed, nstatus, status);
1392
1393 mega_rundoneq(adapter);
1394
1395 /* Loop through any pending requests */
1396 if(atomic_read(&adapter->quiescent) == 0) {
1397 mega_runpendq(adapter);
1398 }
1399
1400 } while(1);
1401
1402 out_unlock:
1403
1404 spin_unlock_irqrestore(&adapter->lock, flags);
1405
1406 return IRQ_RETVAL(handled);
1407 }
1408 /**
1409 * mega_cmd_done()
1410 * @adapter - pointer to our soft state
1411 * @completed - array of ids of completed commands
1412 * @nstatus - number of completed commands
1413 * @status - status of the last command completed
1414 *
1415 * Complete the commands and call the scsi mid-layer callback hooks.
1416 */
1417 static void
1418 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1419 {
1420 mega_ext_passthru *epthru = NULL;
1421 struct scatterlist *sgl;
1422 Scsi_Cmnd *cmd = NULL;
1423 mega_passthru *pthru = NULL;
1424 mbox_t *mbox = NULL;
1425 u8 c;
1426 scb_t *scb;
1427 int islogical;
1428 int cmdid;
1429 int i;
1430
1431 /*
1432 * for all the commands completed, call the mid-layer callback routine
1433 * and free the scb.
1434 */
1435 for( i = 0; i < nstatus; i++ ) {
1436
1437 cmdid = completed[i];
1438
1439 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1440 scb = &adapter->int_scb;
1441 cmd = scb->cmd;
1442 mbox = (mbox_t *)scb->raw_mbox;
1443
1444 /*
1445 * Internal command interface do not fire the extended
1446 * passthru or 64-bit passthru
1447 */
1448 pthru = scb->pthru;
1449
1450 }
1451 else {
1452 scb = &adapter->scb_list[cmdid];
1453
1454 /*
1455 * Make sure f/w has completed a valid command
1456 */
1457 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1458 printk(KERN_CRIT
1459 "megaraid: invalid command ");
1460 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1461 cmdid, scb->state, scb->cmd);
1462
1463 continue;
1464 }
1465
1466 /*
1467 * Was a abort issued for this command
1468 */
1469 if( scb->state & SCB_ABORT ) {
1470
1471 printk(KERN_WARNING
1472 "megaraid: aborted cmd [%x] complete.\n",
1473 scb->idx);
1474
1475 scb->cmd->result = (DID_ABORT << 16);
1476
1477 list_add_tail(SCSI_LIST(scb->cmd),
1478 &adapter->completed_list);
1479
1480 mega_free_scb(adapter, scb);
1481
1482 continue;
1483 }
1484
1485 /*
1486 * Was a reset issued for this command
1487 */
1488 if( scb->state & SCB_RESET ) {
1489
1490 printk(KERN_WARNING
1491 "megaraid: reset cmd [%x] complete.\n",
1492 scb->idx);
1493
1494 scb->cmd->result = (DID_RESET << 16);
1495
1496 list_add_tail(SCSI_LIST(scb->cmd),
1497 &adapter->completed_list);
1498
1499 mega_free_scb (adapter, scb);
1500
1501 continue;
1502 }
1503
1504 cmd = scb->cmd;
1505 pthru = scb->pthru;
1506 epthru = scb->epthru;
1507 mbox = (mbox_t *)scb->raw_mbox;
1508
1509 #if MEGA_HAVE_STATS
1510 {
1511
1512 int logdrv = mbox->m_out.logdrv;
1513
1514 islogical = adapter->logdrv_chan[cmd->channel];
1515 /*
1516 * Maintain an error counter for the logical drive.
1517 * Some application like SNMP agent need such
1518 * statistics
1519 */
1520 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521 cmd->cmnd[0] == READ_10 ||
1522 cmd->cmnd[0] == READ_12)) {
1523 /*
1524 * Logical drive number increases by 0x80 when
1525 * a logical drive is deleted
1526 */
1527 adapter->rd_errors[logdrv%0x80]++;
1528 }
1529
1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531 cmd->cmnd[0] == WRITE_10 ||
1532 cmd->cmnd[0] == WRITE_12)) {
1533 /*
1534 * Logical drive number increases by 0x80 when
1535 * a logical drive is deleted
1536 */
1537 adapter->wr_errors[logdrv%0x80]++;
1538 }
1539
1540 }
1541 #endif
1542 }
1543
1544 /*
1545 * Do not return the presence of hard disk on the channel so,
1546 * inquiry sent, and returned data==hard disk or removable
1547 * hard disk and not logical, request should return failure! -
1548 * PJ
1549 */
1550 islogical = adapter->logdrv_chan[cmd->device->channel];
1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553 sgl = scsi_sglist(cmd);
1554 if( sg_page(sgl) ) {
1555 c = *(unsigned char *) sg_virt(&sgl[0]);
1556 } else {
1557 printk(KERN_WARNING
1558 "megaraid: invalid sg.\n");
1559 c = 0;
1560 }
1561
1562 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1563 ((c & 0x1F ) == TYPE_DISK)) {
1564 status = 0xF0;
1565 }
1566 }
1567
1568 /* clear result; otherwise, success returns corrupt value */
1569 cmd->result = 0;
1570
1571 /* Convert MegaRAID status to Linux error code */
1572 switch (status) {
1573 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1574 cmd->result |= (DID_OK << 16);
1575 break;
1576
1577 case 0x02: /* ERROR_ABORTED, i.e.
1578 SCSI_STATUS_CHECK_CONDITION */
1579
1580 /* set sense_buffer and result fields */
1581 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1582 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1583
1584 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1585 14);
1586
1587 cmd->result = (DRIVER_SENSE << 24) |
1588 (DID_OK << 16) |
1589 (CHECK_CONDITION << 1);
1590 }
1591 else {
1592 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1593
1594 memcpy(cmd->sense_buffer,
1595 epthru->reqsensearea, 14);
1596
1597 cmd->result = (DRIVER_SENSE << 24) |
1598 (DID_OK << 16) |
1599 (CHECK_CONDITION << 1);
1600 } else {
1601 cmd->sense_buffer[0] = 0x70;
1602 cmd->sense_buffer[2] = ABORTED_COMMAND;
1603 cmd->result |= (CHECK_CONDITION << 1);
1604 }
1605 }
1606 break;
1607
1608 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1609 SCSI_STATUS_BUSY */
1610 cmd->result |= (DID_BUS_BUSY << 16) | status;
1611 break;
1612
1613 default:
1614 #if MEGA_HAVE_CLUSTERING
1615 /*
1616 * If TEST_UNIT_READY fails, we know
1617 * MEGA_RESERVATION_STATUS failed
1618 */
1619 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1620 cmd->result |= (DID_ERROR << 16) |
1621 (RESERVATION_CONFLICT << 1);
1622 }
1623 else
1624 /*
1625 * Error code returned is 1 if Reserve or Release
1626 * failed or the input parameter is invalid
1627 */
1628 if( status == 1 &&
1629 (cmd->cmnd[0] == RESERVE ||
1630 cmd->cmnd[0] == RELEASE) ) {
1631
1632 cmd->result |= (DID_ERROR << 16) |
1633 (RESERVATION_CONFLICT << 1);
1634 }
1635 else
1636 #endif
1637 cmd->result |= (DID_BAD_TARGET << 16)|status;
1638 }
1639
1640 /*
1641 * Only free SCBs for the commands coming down from the
1642 * mid-layer, not for which were issued internally
1643 *
1644 * For internal command, restore the status returned by the
1645 * firmware so that user can interpret it.
1646 */
1647 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1648 cmd->result = status;
1649
1650 /*
1651 * Remove the internal command from the pending list
1652 */
1653 list_del_init(&scb->list);
1654 scb->state = SCB_FREE;
1655 }
1656 else {
1657 mega_free_scb(adapter, scb);
1658 }
1659
1660 /* Add Scsi_Command to end of completed queue */
1661 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1662 }
1663 }
1664
1665
1666 /*
1667 * mega_runpendq()
1668 *
1669 * Run through the list of completed requests and finish it
1670 */
1671 static void
1672 mega_rundoneq (adapter_t *adapter)
1673 {
1674 Scsi_Cmnd *cmd;
1675 struct list_head *pos;
1676
1677 list_for_each(pos, &adapter->completed_list) {
1678
1679 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1680
1681 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1682 cmd->scsi_done(cmd);
1683 }
1684
1685 INIT_LIST_HEAD(&adapter->completed_list);
1686 }
1687
1688
1689 /*
1690 * Free a SCB structure
1691 * Note: We assume the scsi commands associated with this scb is not free yet.
1692 */
1693 static void
1694 mega_free_scb(adapter_t *adapter, scb_t *scb)
1695 {
1696 switch( scb->dma_type ) {
1697
1698 case MEGA_DMA_TYPE_NONE:
1699 break;
1700
1701 case MEGA_SGLIST:
1702 scsi_dma_unmap(scb->cmd);
1703 break;
1704 default:
1705 break;
1706 }
1707
1708 /*
1709 * Remove from the pending list
1710 */
1711 list_del_init(&scb->list);
1712
1713 /* Link the scb back into free list */
1714 scb->state = SCB_FREE;
1715 scb->cmd = NULL;
1716
1717 list_add(&scb->list, &adapter->free_list);
1718 }
1719
1720
1721 static int
1722 __mega_busywait_mbox (adapter_t *adapter)
1723 {
1724 volatile mbox_t *mbox = adapter->mbox;
1725 long counter;
1726
1727 for (counter = 0; counter < 10000; counter++) {
1728 if (!mbox->m_in.busy)
1729 return 0;
1730 udelay(100);
1731 cond_resched();
1732 }
1733 return -1; /* give up after 1 second */
1734 }
1735
1736 /*
1737 * Copies data to SGLIST
1738 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1739 */
1740 static int
1741 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1742 {
1743 struct scatterlist *sg;
1744 Scsi_Cmnd *cmd;
1745 int sgcnt;
1746 int idx;
1747
1748 cmd = scb->cmd;
1749
1750 /*
1751 * Copy Scatter-Gather list info into controller structure.
1752 *
1753 * The number of sg elements returned must not exceed our limit
1754 */
1755 sgcnt = scsi_dma_map(cmd);
1756
1757 scb->dma_type = MEGA_SGLIST;
1758
1759 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1760
1761 *len = 0;
1762
1763 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1764 sg = scsi_sglist(cmd);
1765 scb->dma_h_bulkdata = sg_dma_address(sg);
1766 *buf = (u32)scb->dma_h_bulkdata;
1767 *len = sg_dma_len(sg);
1768 return 0;
1769 }
1770
1771 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1772 if (adapter->has_64bit_addr) {
1773 scb->sgl64[idx].address = sg_dma_address(sg);
1774 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1775 } else {
1776 scb->sgl[idx].address = sg_dma_address(sg);
1777 *len += scb->sgl[idx].length = sg_dma_len(sg);
1778 }
1779 }
1780
1781 /* Reset pointer and length fields */
1782 *buf = scb->sgl_dma_addr;
1783
1784 /* Return count of SG requests */
1785 return sgcnt;
1786 }
1787
1788
1789 /*
1790 * mega_8_to_40ld()
1791 *
1792 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1793 * Enquiry3 structures for later use
1794 */
1795 static void
1796 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1797 mega_product_info *product_info)
1798 {
1799 int i;
1800
1801 product_info->max_commands = inquiry->adapter_info.max_commands;
1802 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1803 product_info->nchannels = inquiry->adapter_info.nchannels;
1804
1805 for (i = 0; i < 4; i++) {
1806 product_info->fw_version[i] =
1807 inquiry->adapter_info.fw_version[i];
1808
1809 product_info->bios_version[i] =
1810 inquiry->adapter_info.bios_version[i];
1811 }
1812 enquiry3->cache_flush_interval =
1813 inquiry->adapter_info.cache_flush_interval;
1814
1815 product_info->dram_size = inquiry->adapter_info.dram_size;
1816
1817 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1818
1819 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1820 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1821 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1822 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1823 }
1824
1825 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1826 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1827 }
1828
1829 static inline void
1830 mega_free_sgl(adapter_t *adapter)
1831 {
1832 scb_t *scb;
1833 int i;
1834
1835 for(i = 0; i < adapter->max_cmds; i++) {
1836
1837 scb = &adapter->scb_list[i];
1838
1839 if( scb->sgl64 ) {
1840 pci_free_consistent(adapter->dev,
1841 sizeof(mega_sgl64) * adapter->sglen,
1842 scb->sgl64,
1843 scb->sgl_dma_addr);
1844
1845 scb->sgl64 = NULL;
1846 }
1847
1848 if( scb->pthru ) {
1849 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1850 scb->pthru, scb->pthru_dma_addr);
1851
1852 scb->pthru = NULL;
1853 }
1854
1855 if( scb->epthru ) {
1856 pci_free_consistent(adapter->dev,
1857 sizeof(mega_ext_passthru),
1858 scb->epthru, scb->epthru_dma_addr);
1859
1860 scb->epthru = NULL;
1861 }
1862
1863 }
1864 }
1865
1866
1867 /*
1868 * Get information about the card/driver
1869 */
1870 const char *
1871 megaraid_info(struct Scsi_Host *host)
1872 {
1873 static char buffer[512];
1874 adapter_t *adapter;
1875
1876 adapter = (adapter_t *)host->hostdata;
1877
1878 sprintf (buffer,
1879 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1880 adapter->fw_version, adapter->product_info.max_commands,
1881 adapter->host->max_id, adapter->host->max_channel,
1882 adapter->host->max_lun);
1883 return buffer;
1884 }
1885
1886 /*
1887 * Abort a previous SCSI request. Only commands on the pending list can be
1888 * aborted. All the commands issued to the F/W must complete.
1889 */
1890 static int
1891 megaraid_abort(Scsi_Cmnd *cmd)
1892 {
1893 adapter_t *adapter;
1894 int rval;
1895
1896 adapter = (adapter_t *)cmd->device->host->hostdata;
1897
1898 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1899
1900 /*
1901 * This is required here to complete any completed requests
1902 * to be communicated over to the mid layer.
1903 */
1904 mega_rundoneq(adapter);
1905
1906 return rval;
1907 }
1908
1909
1910 static int
1911 megaraid_reset(struct scsi_cmnd *cmd)
1912 {
1913 adapter_t *adapter;
1914 megacmd_t mc;
1915 int rval;
1916
1917 adapter = (adapter_t *)cmd->device->host->hostdata;
1918
1919 #if MEGA_HAVE_CLUSTERING
1920 mc.cmd = MEGA_CLUSTER_CMD;
1921 mc.opcode = MEGA_RESET_RESERVATIONS;
1922
1923 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1924 printk(KERN_WARNING
1925 "megaraid: reservation reset failed.\n");
1926 }
1927 else {
1928 printk(KERN_INFO "megaraid: reservation reset.\n");
1929 }
1930 #endif
1931
1932 spin_lock_irq(&adapter->lock);
1933
1934 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1935
1936 /*
1937 * This is required here to complete any completed requests
1938 * to be communicated over to the mid layer.
1939 */
1940 mega_rundoneq(adapter);
1941 spin_unlock_irq(&adapter->lock);
1942
1943 return rval;
1944 }
1945
1946 /**
1947 * megaraid_abort_and_reset()
1948 * @adapter - megaraid soft state
1949 * @cmd - scsi command to be aborted or reset
1950 * @aor - abort or reset flag
1951 *
1952 * Try to locate the scsi command in the pending queue. If found and is not
1953 * issued to the controller, abort/reset it. Otherwise return failure
1954 */
1955 static int
1956 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1957 {
1958 struct list_head *pos, *next;
1959 scb_t *scb;
1960
1961 printk(KERN_WARNING "megaraid: %s cmd=%x <c=%d t=%d l=%d>\n",
1962 (aor == SCB_ABORT)? "ABORTING":"RESET",
1963 cmd->cmnd[0], cmd->device->channel,
1964 cmd->device->id, cmd->device->lun);
1965
1966 if(list_empty(&adapter->pending_list))
1967 return FALSE;
1968
1969 list_for_each_safe(pos, next, &adapter->pending_list) {
1970
1971 scb = list_entry(pos, scb_t, list);
1972
1973 if (scb->cmd == cmd) { /* Found command */
1974
1975 scb->state |= aor;
1976
1977 /*
1978 * Check if this command has firmware ownership. If
1979 * yes, we cannot reset this command. Whenever f/w
1980 * completes this command, we will return appropriate
1981 * status from ISR.
1982 */
1983 if( scb->state & SCB_ISSUED ) {
1984
1985 printk(KERN_WARNING
1986 "megaraid: %s[%x], fw owner.\n",
1987 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1988 scb->idx);
1989
1990 return FALSE;
1991 }
1992 else {
1993
1994 /*
1995 * Not yet issued! Remove from the pending
1996 * list
1997 */
1998 printk(KERN_WARNING
1999 "megaraid: %s-[%x], driver owner.\n",
2000 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2001 scb->idx);
2002
2003 mega_free_scb(adapter, scb);
2004
2005 if( aor == SCB_ABORT ) {
2006 cmd->result = (DID_ABORT << 16);
2007 }
2008 else {
2009 cmd->result = (DID_RESET << 16);
2010 }
2011
2012 list_add_tail(SCSI_LIST(cmd),
2013 &adapter->completed_list);
2014
2015 return TRUE;
2016 }
2017 }
2018 }
2019
2020 return FALSE;
2021 }
2022
2023 static inline int
2024 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2025 {
2026 *pdev = alloc_pci_dev();
2027
2028 if( *pdev == NULL ) return -1;
2029
2030 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2031
2032 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2033 kfree(*pdev);
2034 return -1;
2035 }
2036
2037 return 0;
2038 }
2039
2040 static inline void
2041 free_local_pdev(struct pci_dev *pdev)
2042 {
2043 kfree(pdev);
2044 }
2045
2046 /**
2047 * mega_allocate_inquiry()
2048 * @dma_handle - handle returned for dma address
2049 * @pdev - handle to pci device
2050 *
2051 * allocates memory for inquiry structure
2052 */
2053 static inline void *
2054 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2055 {
2056 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2057 }
2058
2059
2060 static inline void
2061 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2062 {
2063 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2064 }
2065
2066
2067 #ifdef CONFIG_PROC_FS
2068 /* Following code handles /proc fs */
2069
2070 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2071 S_IRUSR | S_IFREG, \
2072 controller_proc_dir_entry, \
2073 func, adapter)
2074
2075 /**
2076 * mega_create_proc_entry()
2077 * @index - index in soft state array
2078 * @parent - parent node for this /proc entry
2079 *
2080 * Creates /proc entries for our controllers.
2081 */
2082 static void
2083 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2084 {
2085 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2086 u8 string[64] = { 0 };
2087 adapter_t *adapter = hba_soft_state[index];
2088
2089 sprintf(string, "hba%d", adapter->host->host_no);
2090
2091 controller_proc_dir_entry =
2092 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2093
2094 if(!controller_proc_dir_entry) {
2095 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2096 return;
2097 }
2098 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2099 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2100 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2101 #if MEGA_HAVE_ENH_PROC
2102 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2103 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2104 proc_battery);
2105
2106 /*
2107 * Display each physical drive on its channel
2108 */
2109 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2110 proc_pdrv_ch0);
2111 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2112 proc_pdrv_ch1);
2113 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2114 proc_pdrv_ch2);
2115 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2116 proc_pdrv_ch3);
2117
2118 /*
2119 * Display a set of up to 10 logical drive through each of following
2120 * /proc entries
2121 */
2122 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2123 proc_rdrv_10);
2124 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2125 proc_rdrv_20);
2126 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2127 proc_rdrv_30);
2128 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2129 proc_rdrv_40);
2130 #endif
2131 }
2132
2133
2134 /**
2135 * proc_read_config()
2136 * @page - buffer to write the data in
2137 * @start - where the actual data has been written in page
2138 * @offset - same meaning as the read system call
2139 * @count - same meaning as the read system call
2140 * @eof - set if no more data needs to be returned
2141 * @data - pointer to our soft state
2142 *
2143 * Display configuration information about the controller.
2144 */
2145 static int
2146 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2147 void *data)
2148 {
2149
2150 adapter_t *adapter = (adapter_t *)data;
2151 int len = 0;
2152
2153 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2154
2155 if(adapter->product_info.product_name[0])
2156 len += sprintf(page+len, "%s\n",
2157 adapter->product_info.product_name);
2158
2159 len += sprintf(page+len, "Controller Type: ");
2160
2161 if( adapter->flag & BOARD_MEMMAP ) {
2162 len += sprintf(page+len,
2163 "438/466/467/471/493/518/520/531/532\n");
2164 }
2165 else {
2166 len += sprintf(page+len,
2167 "418/428/434\n");
2168 }
2169
2170 if(adapter->flag & BOARD_40LD) {
2171 len += sprintf(page+len,
2172 "Controller Supports 40 Logical Drives\n");
2173 }
2174
2175 if(adapter->flag & BOARD_64BIT) {
2176 len += sprintf(page+len,
2177 "Controller capable of 64-bit memory addressing\n");
2178 }
2179 if( adapter->has_64bit_addr ) {
2180 len += sprintf(page+len,
2181 "Controller using 64-bit memory addressing\n");
2182 }
2183 else {
2184 len += sprintf(page+len,
2185 "Controller is not using 64-bit memory addressing\n");
2186 }
2187
2188 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2189 adapter->host->irq);
2190
2191 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2192 adapter->numldrv, adapter->product_info.nchannels);
2193
2194 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2195 adapter->fw_version, adapter->bios_version,
2196 adapter->product_info.dram_size);
2197
2198 len += sprintf(page+len,
2199 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2200 adapter->product_info.max_commands, adapter->max_cmds);
2201
2202 len += sprintf(page+len, "support_ext_cdb = %d\n",
2203 adapter->support_ext_cdb);
2204 len += sprintf(page+len, "support_random_del = %d\n",
2205 adapter->support_random_del);
2206 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2207 adapter->boot_ldrv_enabled);
2208 len += sprintf(page+len, "boot_ldrv = %d\n",
2209 adapter->boot_ldrv);
2210 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2211 adapter->boot_pdrv_enabled);
2212 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2213 adapter->boot_pdrv_ch);
2214 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2215 adapter->boot_pdrv_tgt);
2216 len += sprintf(page+len, "quiescent = %d\n",
2217 atomic_read(&adapter->quiescent));
2218 len += sprintf(page+len, "has_cluster = %d\n",
2219 adapter->has_cluster);
2220
2221 len += sprintf(page+len, "\nModule Parameters:\n");
2222 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2223 max_cmd_per_lun);
2224 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2225 max_sectors_per_io);
2226
2227 *eof = 1;
2228
2229 return len;
2230 }
2231
2232
2233
2234 /**
2235 * proc_read_stat()
2236 * @page - buffer to write the data in
2237 * @start - where the actual data has been written in page
2238 * @offset - same meaning as the read system call
2239 * @count - same meaning as the read system call
2240 * @eof - set if no more data needs to be returned
2241 * @data - pointer to our soft state
2242 *
2243 * Diaplay statistical information about the I/O activity.
2244 */
2245 static int
2246 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2247 void *data)
2248 {
2249 adapter_t *adapter;
2250 int len;
2251 int i;
2252
2253 i = 0; /* avoid compilation warnings */
2254 len = 0;
2255 adapter = (adapter_t *)data;
2256
2257 len = sprintf(page, "Statistical Information for this controller\n");
2258 len += sprintf(page+len, "pend_cmds = %d\n",
2259 atomic_read(&adapter->pend_cmds));
2260 #if MEGA_HAVE_STATS
2261 for(i = 0; i < adapter->numldrv; i++) {
2262 len += sprintf(page+len, "Logical Drive %d:\n", i);
2263
2264 len += sprintf(page+len,
2265 "\tReads Issued = %lu, Writes Issued = %lu\n",
2266 adapter->nreads[i], adapter->nwrites[i]);
2267
2268 len += sprintf(page+len,
2269 "\tSectors Read = %lu, Sectors Written = %lu\n",
2270 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2271
2272 len += sprintf(page+len,
2273 "\tRead errors = %lu, Write errors = %lu\n\n",
2274 adapter->rd_errors[i], adapter->wr_errors[i]);
2275 }
2276 #else
2277 len += sprintf(page+len,
2278 "IO and error counters not compiled in driver.\n");
2279 #endif
2280
2281 *eof = 1;
2282
2283 return len;
2284 }
2285
2286
2287 /**
2288 * proc_read_mbox()
2289 * @page - buffer to write the data in
2290 * @start - where the actual data has been written in page
2291 * @offset - same meaning as the read system call
2292 * @count - same meaning as the read system call
2293 * @eof - set if no more data needs to be returned
2294 * @data - pointer to our soft state
2295 *
2296 * Display mailbox information for the last command issued. This information
2297 * is good for debugging.
2298 */
2299 static int
2300 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2301 void *data)
2302 {
2303
2304 adapter_t *adapter = (adapter_t *)data;
2305 volatile mbox_t *mbox = adapter->mbox;
2306 int len = 0;
2307
2308 len = sprintf(page, "Contents of Mail Box Structure\n");
2309 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2310 mbox->m_out.cmd);
2311 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2312 mbox->m_out.cmdid);
2313 len += sprintf(page+len, " No of Sectors= %04d\n",
2314 mbox->m_out.numsectors);
2315 len += sprintf(page+len, " LBA = 0x%02x\n",
2316 mbox->m_out.lba);
2317 len += sprintf(page+len, " DTA = 0x%08x\n",
2318 mbox->m_out.xferaddr);
2319 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2320 mbox->m_out.logdrv);
2321 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2322 mbox->m_out.numsgelements);
2323 len += sprintf(page+len, " Busy = %01x\n",
2324 mbox->m_in.busy);
2325 len += sprintf(page+len, " Status = 0x%02x\n",
2326 mbox->m_in.status);
2327
2328 *eof = 1;
2329
2330 return len;
2331 }
2332
2333
2334 /**
2335 * proc_rebuild_rate()
2336 * @page - buffer to write the data in
2337 * @start - where the actual data has been written in page
2338 * @offset - same meaning as the read system call
2339 * @count - same meaning as the read system call
2340 * @eof - set if no more data needs to be returned
2341 * @data - pointer to our soft state
2342 *
2343 * Display current rebuild rate
2344 */
2345 static int
2346 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2347 void *data)
2348 {
2349 adapter_t *adapter = (adapter_t *)data;
2350 dma_addr_t dma_handle;
2351 caddr_t inquiry;
2352 struct pci_dev *pdev;
2353 int len = 0;
2354
2355 if( make_local_pdev(adapter, &pdev) != 0 ) {
2356 *eof = 1;
2357 return len;
2358 }
2359
2360 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2361 free_local_pdev(pdev);
2362 *eof = 1;
2363 return len;
2364 }
2365
2366 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2367
2368 len = sprintf(page, "Adapter inquiry failed.\n");
2369
2370 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2371
2372 mega_free_inquiry(inquiry, dma_handle, pdev);
2373
2374 free_local_pdev(pdev);
2375
2376 *eof = 1;
2377
2378 return len;
2379 }
2380
2381 if( adapter->flag & BOARD_40LD ) {
2382 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2383 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2384 }
2385 else {
2386 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2387 ((mraid_ext_inquiry *)
2388 inquiry)->raid_inq.adapter_info.rebuild_rate);
2389 }
2390
2391
2392 mega_free_inquiry(inquiry, dma_handle, pdev);
2393
2394 free_local_pdev(pdev);
2395
2396 *eof = 1;
2397
2398 return len;
2399 }
2400
2401
2402 /**
2403 * proc_battery()
2404 * @page - buffer to write the data in
2405 * @start - where the actual data has been written in page
2406 * @offset - same meaning as the read system call
2407 * @count - same meaning as the read system call
2408 * @eof - set if no more data needs to be returned
2409 * @data - pointer to our soft state
2410 *
2411 * Display information about the battery module on the controller.
2412 */
2413 static int
2414 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2415 void *data)
2416 {
2417 adapter_t *adapter = (adapter_t *)data;
2418 dma_addr_t dma_handle;
2419 caddr_t inquiry;
2420 struct pci_dev *pdev;
2421 u8 battery_status = 0;
2422 char str[256];
2423 int len = 0;
2424
2425 if( make_local_pdev(adapter, &pdev) != 0 ) {
2426 *eof = 1;
2427 return len;
2428 }
2429
2430 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2431 free_local_pdev(pdev);
2432 *eof = 1;
2433 return len;
2434 }
2435
2436 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2437
2438 len = sprintf(page, "Adapter inquiry failed.\n");
2439
2440 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2441
2442 mega_free_inquiry(inquiry, dma_handle, pdev);
2443
2444 free_local_pdev(pdev);
2445
2446 *eof = 1;
2447
2448 return len;
2449 }
2450
2451 if( adapter->flag & BOARD_40LD ) {
2452 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2453 }
2454 else {
2455 battery_status = ((mraid_ext_inquiry *)inquiry)->
2456 raid_inq.adapter_info.battery_status;
2457 }
2458
2459 /*
2460 * Decode the battery status
2461 */
2462 sprintf(str, "Battery Status:[%d]", battery_status);
2463
2464 if(battery_status == MEGA_BATT_CHARGE_DONE)
2465 strcat(str, " Charge Done");
2466
2467 if(battery_status & MEGA_BATT_MODULE_MISSING)
2468 strcat(str, " Module Missing");
2469
2470 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2471 strcat(str, " Low Voltage");
2472
2473 if(battery_status & MEGA_BATT_TEMP_HIGH)
2474 strcat(str, " Temperature High");
2475
2476 if(battery_status & MEGA_BATT_PACK_MISSING)
2477 strcat(str, " Pack Missing");
2478
2479 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2480 strcat(str, " Charge In-progress");
2481
2482 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2483 strcat(str, " Charge Fail");
2484
2485 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2486 strcat(str, " Cycles Exceeded");
2487
2488 len = sprintf(page, "%s\n", str);
2489
2490
2491 mega_free_inquiry(inquiry, dma_handle, pdev);
2492
2493 free_local_pdev(pdev);
2494
2495 *eof = 1;
2496
2497 return len;
2498 }
2499
2500
2501 /**
2502 * proc_pdrv_ch0()
2503 * @page - buffer to write the data in
2504 * @start - where the actual data has been written in page
2505 * @offset - same meaning as the read system call
2506 * @count - same meaning as the read system call
2507 * @eof - set if no more data needs to be returned
2508 * @data - pointer to our soft state
2509 *
2510 * Display information about the physical drives on physical channel 0.
2511 */
2512 static int
2513 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2514 void *data)
2515 {
2516 adapter_t *adapter = (adapter_t *)data;
2517
2518 *eof = 1;
2519
2520 return (proc_pdrv(adapter, page, 0));
2521 }
2522
2523
2524 /**
2525 * proc_pdrv_ch1()
2526 * @page - buffer to write the data in
2527 * @start - where the actual data has been written in page
2528 * @offset - same meaning as the read system call
2529 * @count - same meaning as the read system call
2530 * @eof - set if no more data needs to be returned
2531 * @data - pointer to our soft state
2532 *
2533 * Display information about the physical drives on physical channel 1.
2534 */
2535 static int
2536 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2537 void *data)
2538 {
2539 adapter_t *adapter = (adapter_t *)data;
2540
2541 *eof = 1;
2542
2543 return (proc_pdrv(adapter, page, 1));
2544 }
2545
2546
2547 /**
2548 * proc_pdrv_ch2()
2549 * @page - buffer to write the data in
2550 * @start - where the actual data has been written in page
2551 * @offset - same meaning as the read system call
2552 * @count - same meaning as the read system call
2553 * @eof - set if no more data needs to be returned
2554 * @data - pointer to our soft state
2555 *
2556 * Display information about the physical drives on physical channel 2.
2557 */
2558 static int
2559 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2560 void *data)
2561 {
2562 adapter_t *adapter = (adapter_t *)data;
2563
2564 *eof = 1;
2565
2566 return (proc_pdrv(adapter, page, 2));
2567 }
2568
2569
2570 /**
2571 * proc_pdrv_ch3()
2572 * @page - buffer to write the data in
2573 * @start - where the actual data has been written in page
2574 * @offset - same meaning as the read system call
2575 * @count - same meaning as the read system call
2576 * @eof - set if no more data needs to be returned
2577 * @data - pointer to our soft state
2578 *
2579 * Display information about the physical drives on physical channel 3.
2580 */
2581 static int
2582 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2583 void *data)
2584 {
2585 adapter_t *adapter = (adapter_t *)data;
2586
2587 *eof = 1;
2588
2589 return (proc_pdrv(adapter, page, 3));
2590 }
2591
2592
2593 /**
2594 * proc_pdrv()
2595 * @page - buffer to write the data in
2596 * @adapter - pointer to our soft state
2597 *
2598 * Display information about the physical drives.
2599 */
2600 static int
2601 proc_pdrv(adapter_t *adapter, char *page, int channel)
2602 {
2603 dma_addr_t dma_handle;
2604 char *scsi_inq;
2605 dma_addr_t scsi_inq_dma_handle;
2606 caddr_t inquiry;
2607 struct pci_dev *pdev;
2608 u8 *pdrv_state;
2609 u8 state;
2610 int tgt;
2611 int max_channels;
2612 int len = 0;
2613 char str[80];
2614 int i;
2615
2616 if( make_local_pdev(adapter, &pdev) != 0 ) {
2617 return len;
2618 }
2619
2620 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2621 goto free_pdev;
2622 }
2623
2624 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2625 len = sprintf(page, "Adapter inquiry failed.\n");
2626
2627 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2628
2629 goto free_inquiry;
2630 }
2631
2632
2633 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2634
2635 if( scsi_inq == NULL ) {
2636 len = sprintf(page, "memory not available for scsi inq.\n");
2637
2638 goto free_inquiry;
2639 }
2640
2641 if( adapter->flag & BOARD_40LD ) {
2642 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2643 }
2644 else {
2645 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2646 raid_inq.pdrv_info.pdrv_state;
2647 }
2648
2649 max_channels = adapter->product_info.nchannels;
2650
2651 if( channel >= max_channels ) {
2652 goto free_pci;
2653 }
2654
2655 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2656
2657 i = channel*16 + tgt;
2658
2659 state = *(pdrv_state + i);
2660
2661 switch( state & 0x0F ) {
2662
2663 case PDRV_ONLINE:
2664 sprintf(str,
2665 "Channel:%2d Id:%2d State: Online",
2666 channel, tgt);
2667 break;
2668
2669 case PDRV_FAILED:
2670 sprintf(str,
2671 "Channel:%2d Id:%2d State: Failed",
2672 channel, tgt);
2673 break;
2674
2675 case PDRV_RBLD:
2676 sprintf(str,
2677 "Channel:%2d Id:%2d State: Rebuild",
2678 channel, tgt);
2679 break;
2680
2681 case PDRV_HOTSPARE:
2682 sprintf(str,
2683 "Channel:%2d Id:%2d State: Hot spare",
2684 channel, tgt);
2685 break;
2686
2687 default:
2688 sprintf(str,
2689 "Channel:%2d Id:%2d State: Un-configured",
2690 channel, tgt);
2691 break;
2692
2693 }
2694
2695 /*
2696 * This interface displays inquiries for disk drives
2697 * only. Inquries for logical drives and non-disk
2698 * devices are available through /proc/scsi/scsi
2699 */
2700 memset(scsi_inq, 0, 256);
2701 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2702 scsi_inq_dma_handle) ||
2703 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2704 continue;
2705 }
2706
2707 /*
2708 * Check for overflow. We print less than 240
2709 * characters for inquiry
2710 */
2711 if( (len + 240) >= PAGE_SIZE ) break;
2712
2713 len += sprintf(page+len, "%s.\n", str);
2714
2715 len += mega_print_inquiry(page+len, scsi_inq);
2716 }
2717
2718 free_pci:
2719 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2720 free_inquiry:
2721 mega_free_inquiry(inquiry, dma_handle, pdev);
2722 free_pdev:
2723 free_local_pdev(pdev);
2724
2725 return len;
2726 }
2727
2728
2729 /*
2730 * Display scsi inquiry
2731 */
2732 static int
2733 mega_print_inquiry(char *page, char *scsi_inq)
2734 {
2735 int len = 0;
2736 int i;
2737
2738 len = sprintf(page, " Vendor: ");
2739 for( i = 8; i < 16; i++ ) {
2740 len += sprintf(page+len, "%c", scsi_inq[i]);
2741 }
2742
2743 len += sprintf(page+len, " Model: ");
2744
2745 for( i = 16; i < 32; i++ ) {
2746 len += sprintf(page+len, "%c", scsi_inq[i]);
2747 }
2748
2749 len += sprintf(page+len, " Rev: ");
2750
2751 for( i = 32; i < 36; i++ ) {
2752 len += sprintf(page+len, "%c", scsi_inq[i]);
2753 }
2754
2755 len += sprintf(page+len, "\n");
2756
2757 i = scsi_inq[0] & 0x1f;
2758
2759 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2760
2761 len += sprintf(page+len,
2762 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2763
2764 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2765 len += sprintf(page+len, " CCS\n");
2766 else
2767 len += sprintf(page+len, "\n");
2768
2769 return len;
2770 }
2771
2772
2773 /**
2774 * proc_rdrv_10()
2775 * @page - buffer to write the data in
2776 * @start - where the actual data has been written in page
2777 * @offset - same meaning as the read system call
2778 * @count - same meaning as the read system call
2779 * @eof - set if no more data needs to be returned
2780 * @data - pointer to our soft state
2781 *
2782 * Display real time information about the logical drives 0 through 9.
2783 */
2784 static int
2785 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2786 void *data)
2787 {
2788 adapter_t *adapter = (adapter_t *)data;
2789
2790 *eof = 1;
2791
2792 return (proc_rdrv(adapter, page, 0, 9));
2793 }
2794
2795
2796 /**
2797 * proc_rdrv_20()
2798 * @page - buffer to write the data in
2799 * @start - where the actual data has been written in page
2800 * @offset - same meaning as the read system call
2801 * @count - same meaning as the read system call
2802 * @eof - set if no more data needs to be returned
2803 * @data - pointer to our soft state
2804 *
2805 * Display real time information about the logical drives 0 through 9.
2806 */
2807 static int
2808 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2809 void *data)
2810 {
2811 adapter_t *adapter = (adapter_t *)data;
2812
2813 *eof = 1;
2814
2815 return (proc_rdrv(adapter, page, 10, 19));
2816 }
2817
2818
2819 /**
2820 * proc_rdrv_30()
2821 * @page - buffer to write the data in
2822 * @start - where the actual data has been written in page
2823 * @offset - same meaning as the read system call
2824 * @count - same meaning as the read system call
2825 * @eof - set if no more data needs to be returned
2826 * @data - pointer to our soft state
2827 *
2828 * Display real time information about the logical drives 0 through 9.
2829 */
2830 static int
2831 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2832 void *data)
2833 {
2834 adapter_t *adapter = (adapter_t *)data;
2835
2836 *eof = 1;
2837
2838 return (proc_rdrv(adapter, page, 20, 29));
2839 }
2840
2841
2842 /**
2843 * proc_rdrv_40()
2844 * @page - buffer to write the data in
2845 * @start - where the actual data has been written in page
2846 * @offset - same meaning as the read system call
2847 * @count - same meaning as the read system call
2848 * @eof - set if no more data needs to be returned
2849 * @data - pointer to our soft state
2850 *
2851 * Display real time information about the logical drives 0 through 9.
2852 */
2853 static int
2854 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2855 void *data)
2856 {
2857 adapter_t *adapter = (adapter_t *)data;
2858
2859 *eof = 1;
2860
2861 return (proc_rdrv(adapter, page, 30, 39));
2862 }
2863
2864
2865 /**
2866 * proc_rdrv()
2867 * @page - buffer to write the data in
2868 * @adapter - pointer to our soft state
2869 * @start - starting logical drive to display
2870 * @end - ending logical drive to display
2871 *
2872 * We do not print the inquiry information since its already available through
2873 * /proc/scsi/scsi interface
2874 */
2875 static int
2876 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2877 {
2878 dma_addr_t dma_handle;
2879 logdrv_param *lparam;
2880 megacmd_t mc;
2881 char *disk_array;
2882 dma_addr_t disk_array_dma_handle;
2883 caddr_t inquiry;
2884 struct pci_dev *pdev;
2885 u8 *rdrv_state;
2886 int num_ldrv;
2887 u32 array_sz;
2888 int len = 0;
2889 int i;
2890
2891 if( make_local_pdev(adapter, &pdev) != 0 ) {
2892 return len;
2893 }
2894
2895 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2896 free_local_pdev(pdev);
2897 return len;
2898 }
2899
2900 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2901
2902 len = sprintf(page, "Adapter inquiry failed.\n");
2903
2904 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2905
2906 mega_free_inquiry(inquiry, dma_handle, pdev);
2907
2908 free_local_pdev(pdev);
2909
2910 return len;
2911 }
2912
2913 memset(&mc, 0, sizeof(megacmd_t));
2914
2915 if( adapter->flag & BOARD_40LD ) {
2916 array_sz = sizeof(disk_array_40ld);
2917
2918 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2919
2920 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2921 }
2922 else {
2923 array_sz = sizeof(disk_array_8ld);
2924
2925 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2926 raid_inq.logdrv_info.ldrv_state;
2927
2928 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2929 raid_inq.logdrv_info.num_ldrv;
2930 }
2931
2932 disk_array = pci_alloc_consistent(pdev, array_sz,
2933 &disk_array_dma_handle);
2934
2935 if( disk_array == NULL ) {
2936 len = sprintf(page, "memory not available.\n");
2937
2938 mega_free_inquiry(inquiry, dma_handle, pdev);
2939
2940 free_local_pdev(pdev);
2941
2942 return len;
2943 }
2944
2945 mc.xferaddr = (u32)disk_array_dma_handle;
2946
2947 if( adapter->flag & BOARD_40LD ) {
2948 mc.cmd = FC_NEW_CONFIG;
2949 mc.opcode = OP_DCMD_READ_CONFIG;
2950
2951 if( mega_internal_command(adapter, &mc, NULL) ) {
2952
2953 len = sprintf(page, "40LD read config failed.\n");
2954
2955 mega_free_inquiry(inquiry, dma_handle, pdev);
2956
2957 pci_free_consistent(pdev, array_sz, disk_array,
2958 disk_array_dma_handle);
2959
2960 free_local_pdev(pdev);
2961
2962 return len;
2963 }
2964
2965 }
2966 else {
2967 mc.cmd = NEW_READ_CONFIG_8LD;
2968
2969 if( mega_internal_command(adapter, &mc, NULL) ) {
2970
2971 mc.cmd = READ_CONFIG_8LD;
2972
2973 if( mega_internal_command(adapter, &mc,
2974 NULL) ){
2975
2976 len = sprintf(page,
2977 "8LD read config failed.\n");
2978
2979 mega_free_inquiry(inquiry, dma_handle, pdev);
2980
2981 pci_free_consistent(pdev, array_sz,
2982 disk_array,
2983 disk_array_dma_handle);
2984
2985 free_local_pdev(pdev);
2986
2987 return len;
2988 }
2989 }
2990 }
2991
2992 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2993
2994 if( adapter->flag & BOARD_40LD ) {
2995 lparam =
2996 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2997 }
2998 else {
2999 lparam =
3000 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3001 }
3002
3003 /*
3004 * Check for overflow. We print less than 240 characters for
3005 * information about each logical drive.
3006 */
3007 if( (len + 240) >= PAGE_SIZE ) break;
3008
3009 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3010
3011 switch( rdrv_state[i] & 0x0F ) {
3012 case RDRV_OFFLINE:
3013 len += sprintf(page+len, "state: offline");
3014 break;
3015
3016 case RDRV_DEGRADED:
3017 len += sprintf(page+len, "state: degraded");
3018 break;
3019
3020 case RDRV_OPTIMAL:
3021 len += sprintf(page+len, "state: optimal");
3022 break;
3023
3024 case RDRV_DELETED:
3025 len += sprintf(page+len, "state: deleted");
3026 break;
3027
3028 default:
3029 len += sprintf(page+len, "state: unknown");
3030 break;
3031 }
3032
3033 /*
3034 * Check if check consistency or initialization is going on
3035 * for this logical drive.
3036 */
3037 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3038 len += sprintf(page+len,
3039 ", check-consistency in progress");
3040 }
3041 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3042 len += sprintf(page+len,
3043 ", initialization in progress");
3044 }
3045
3046 len += sprintf(page+len, "\n");
3047
3048 len += sprintf(page+len, "Span depth:%3d, ",
3049 lparam->span_depth);
3050
3051 len += sprintf(page+len, "RAID level:%3d, ",
3052 lparam->level);
3053
3054 len += sprintf(page+len, "Stripe size:%3d, ",
3055 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3056
3057 len += sprintf(page+len, "Row size:%3d\n",
3058 lparam->row_size);
3059
3060
3061 len += sprintf(page+len, "Read Policy: ");
3062
3063 switch(lparam->read_ahead) {
3064
3065 case NO_READ_AHEAD:
3066 len += sprintf(page+len, "No read ahead, ");
3067 break;
3068
3069 case READ_AHEAD:
3070 len += sprintf(page+len, "Read ahead, ");
3071 break;
3072
3073 case ADAP_READ_AHEAD:
3074 len += sprintf(page+len, "Adaptive, ");
3075 break;
3076
3077 }
3078
3079 len += sprintf(page+len, "Write Policy: ");
3080
3081 switch(lparam->write_mode) {
3082
3083 case WRMODE_WRITE_THRU:
3084 len += sprintf(page+len, "Write thru, ");
3085 break;
3086
3087 case WRMODE_WRITE_BACK:
3088 len += sprintf(page+len, "Write back, ");
3089 break;
3090 }
3091
3092 len += sprintf(page+len, "Cache Policy: ");
3093
3094 switch(lparam->direct_io) {
3095
3096 case CACHED_IO:
3097 len += sprintf(page+len, "Cached IO\n\n");
3098 break;
3099
3100 case DIRECT_IO:
3101 len += sprintf(page+len, "Direct IO\n\n");
3102 break;
3103 }
3104 }
3105
3106 mega_free_inquiry(inquiry, dma_handle, pdev);
3107
3108 pci_free_consistent(pdev, array_sz, disk_array,
3109 disk_array_dma_handle);
3110
3111 free_local_pdev(pdev);
3112
3113 return len;
3114 }
3115 #else
3116 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3117 {
3118 }
3119 #endif
3120
3121
3122 /**
3123 * megaraid_biosparam()
3124 *
3125 * Return the disk geometry for a particular disk
3126 */
3127 static int
3128 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3129 sector_t capacity, int geom[])
3130 {
3131 adapter_t *adapter;
3132 unsigned char *bh;
3133 int heads;
3134 int sectors;
3135 int cylinders;
3136 int rval;
3137
3138 /* Get pointer to host config structure */
3139 adapter = (adapter_t *)sdev->host->hostdata;
3140
3141 if (IS_RAID_CH(adapter, sdev->channel)) {
3142 /* Default heads (64) & sectors (32) */
3143 heads = 64;
3144 sectors = 32;
3145 cylinders = (ulong)capacity / (heads * sectors);
3146
3147 /*
3148 * Handle extended translation size for logical drives
3149 * > 1Gb
3150 */
3151 if ((ulong)capacity >= 0x200000) {
3152 heads = 255;
3153 sectors = 63;
3154 cylinders = (ulong)capacity / (heads * sectors);
3155 }
3156
3157 /* return result */
3158 geom[0] = heads;
3159 geom[1] = sectors;
3160 geom[2] = cylinders;
3161 }
3162 else {
3163 bh = scsi_bios_ptable(bdev);
3164
3165 if( bh ) {
3166 rval = scsi_partsize(bh, capacity,
3167 &geom[2], &geom[0], &geom[1]);
3168 kfree(bh);
3169 if( rval != -1 )
3170 return rval;
3171 }
3172
3173 printk(KERN_INFO
3174 "megaraid: invalid partition on this disk on channel %d\n",
3175 sdev->channel);
3176
3177 /* Default heads (64) & sectors (32) */
3178 heads = 64;
3179 sectors = 32;
3180 cylinders = (ulong)capacity / (heads * sectors);
3181
3182 /* Handle extended translation size for logical drives > 1Gb */
3183 if ((ulong)capacity >= 0x200000) {
3184 heads = 255;
3185 sectors = 63;
3186 cylinders = (ulong)capacity / (heads * sectors);
3187 }
3188
3189 /* return result */
3190 geom[0] = heads;
3191 geom[1] = sectors;
3192 geom[2] = cylinders;
3193 }
3194
3195 return 0;
3196 }
3197
3198 /**
3199 * mega_init_scb()
3200 * @adapter - pointer to our soft state
3201 *
3202 * Allocate memory for the various pointers in the scb structures:
3203 * scatter-gather list pointer, passthru and extended passthru structure
3204 * pointers.
3205 */
3206 static int
3207 mega_init_scb(adapter_t *adapter)
3208 {
3209 scb_t *scb;
3210 int i;
3211
3212 for( i = 0; i < adapter->max_cmds; i++ ) {
3213
3214 scb = &adapter->scb_list[i];
3215
3216 scb->sgl64 = NULL;
3217 scb->sgl = NULL;
3218 scb->pthru = NULL;
3219 scb->epthru = NULL;
3220 }
3221
3222 for( i = 0; i < adapter->max_cmds; i++ ) {
3223
3224 scb = &adapter->scb_list[i];
3225
3226 scb->idx = i;
3227
3228 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3229 sizeof(mega_sgl64) * adapter->sglen,
3230 &scb->sgl_dma_addr);
3231
3232 scb->sgl = (mega_sglist *)scb->sgl64;
3233
3234 if( !scb->sgl ) {
3235 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3236 mega_free_sgl(adapter);
3237 return -1;
3238 }
3239
3240 scb->pthru = pci_alloc_consistent(adapter->dev,
3241 sizeof(mega_passthru),
3242 &scb->pthru_dma_addr);
3243
3244 if( !scb->pthru ) {
3245 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3246 mega_free_sgl(adapter);
3247 return -1;
3248 }
3249
3250 scb->epthru = pci_alloc_consistent(adapter->dev,
3251 sizeof(mega_ext_passthru),
3252 &scb->epthru_dma_addr);
3253
3254 if( !scb->epthru ) {
3255 printk(KERN_WARNING
3256 "Can't allocate extended passthru.\n");
3257 mega_free_sgl(adapter);
3258 return -1;
3259 }
3260
3261
3262 scb->dma_type = MEGA_DMA_TYPE_NONE;
3263
3264 /*
3265 * Link to free list
3266 * lock not required since we are loading the driver, so no
3267 * commands possible right now.
3268 */
3269 scb->state = SCB_FREE;
3270 scb->cmd = NULL;
3271 list_add(&scb->list, &adapter->free_list);
3272 }
3273
3274 return 0;
3275 }
3276
3277
3278 /**
3279 * megadev_open()
3280 * @inode - unused
3281 * @filep - unused
3282 *
3283 * Routines for the character/ioctl interface to the driver. Find out if this
3284 * is a valid open.
3285 */
3286 static int
3287 megadev_open (struct inode *inode, struct file *filep)
3288 {
3289 /*
3290 * Only allow superuser to access private ioctl interface
3291 */
3292 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3293
3294 return 0;
3295 }
3296
3297
3298 /**
3299 * megadev_ioctl()
3300 * @inode - Our device inode
3301 * @filep - unused
3302 * @cmd - ioctl command
3303 * @arg - user buffer
3304 *
3305 * ioctl entry point for our private ioctl interface. We move the data in from
3306 * the user space, prepare the command (if necessary, convert the old MIMD
3307 * ioctl to new ioctl command), and issue a synchronous command to the
3308 * controller.
3309 */
3310 static int
3311 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3312 {
3313 adapter_t *adapter;
3314 nitioctl_t uioc;
3315 int adapno;
3316 int rval;
3317 mega_passthru __user *upthru; /* user address for passthru */
3318 mega_passthru *pthru; /* copy user passthru here */
3319 dma_addr_t pthru_dma_hndl;
3320 void *data = NULL; /* data to be transferred */
3321 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3322 megacmd_t mc;
3323 megastat_t __user *ustats;
3324 int num_ldrv;
3325 u32 uxferaddr = 0;
3326 struct pci_dev *pdev;
3327
3328 ustats = NULL; /* avoid compilation warnings */
3329 num_ldrv = 0;
3330
3331 /*
3332 * Make sure only USCSICMD are issued through this interface.
3333 * MIMD application would still fire different command.
3334 */
3335 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3336 return -EINVAL;
3337 }
3338
3339 /*
3340 * Check and convert a possible MIMD command to NIT command.
3341 * mega_m_to_n() copies the data from the user space, so we do not
3342 * have to do it here.
3343 * NOTE: We will need some user address to copyout the data, therefore
3344 * the inteface layer will also provide us with the required user
3345 * addresses.
3346 */
3347 memset(&uioc, 0, sizeof(nitioctl_t));
3348 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3349 return rval;
3350
3351
3352 switch( uioc.opcode ) {
3353
3354 case GET_DRIVER_VER:
3355 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3356 return (-EFAULT);
3357
3358 break;
3359
3360 case GET_N_ADAP:
3361 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3362 return (-EFAULT);
3363
3364 /*
3365 * Shucks. MIMD interface returns a positive value for number
3366 * of adapters. TODO: Change it to return 0 when there is no
3367 * applicatio using mimd interface.
3368 */
3369 return hba_count;
3370
3371 case GET_ADAP_INFO:
3372
3373 /*
3374 * Which adapter
3375 */
3376 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3377 return (-ENODEV);
3378
3379 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3380 sizeof(struct mcontroller)) )
3381 return (-EFAULT);
3382 break;
3383
3384 #if MEGA_HAVE_STATS
3385
3386 case GET_STATS:
3387 /*
3388 * Which adapter
3389 */
3390 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3391 return (-ENODEV);
3392
3393 adapter = hba_soft_state[adapno];
3394
3395 ustats = uioc.uioc_uaddr;
3396
3397 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3398 return (-EFAULT);
3399
3400 /*
3401 * Check for the validity of the logical drive number
3402 */
3403 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3404
3405 if( copy_to_user(ustats->nreads, adapter->nreads,
3406 num_ldrv*sizeof(u32)) )
3407 return -EFAULT;
3408
3409 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3410 num_ldrv*sizeof(u32)) )
3411 return -EFAULT;
3412
3413 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3414 num_ldrv*sizeof(u32)) )
3415 return -EFAULT;
3416
3417 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3418 num_ldrv*sizeof(u32)) )
3419 return -EFAULT;
3420
3421 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3422 num_ldrv*sizeof(u32)) )
3423 return -EFAULT;
3424
3425 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3426 num_ldrv*sizeof(u32)) )
3427 return -EFAULT;
3428
3429 return 0;
3430
3431 #endif
3432 case MBOX_CMD:
3433
3434 /*
3435 * Which adapter
3436 */
3437 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3438 return (-ENODEV);
3439
3440 adapter = hba_soft_state[adapno];
3441
3442 /*
3443 * Deletion of logical drive is a special case. The adapter
3444 * should be quiescent before this command is issued.
3445 */
3446 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3447 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3448
3449 /*
3450 * Do we support this feature
3451 */
3452 if( !adapter->support_random_del ) {
3453 printk(KERN_WARNING "megaraid: logdrv ");
3454 printk("delete on non-supporting F/W.\n");
3455
3456 return (-EINVAL);
3457 }
3458
3459 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3460
3461 if( rval == 0 ) {
3462 memset(&mc, 0, sizeof(megacmd_t));
3463
3464 mc.status = rval;
3465
3466 rval = mega_n_to_m((void __user *)arg, &mc);
3467 }
3468
3469 return rval;
3470 }
3471 /*
3472 * This interface only support the regular passthru commands.
3473 * Reject extended passthru and 64-bit passthru
3474 */
3475 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3476 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3477
3478 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3479
3480 return (-EINVAL);
3481 }
3482
3483 /*
3484 * For all internal commands, the buffer must be allocated in
3485 * <4GB address range
3486 */
3487 if( make_local_pdev(adapter, &pdev) != 0 )
3488 return -EIO;
3489
3490 /* Is it a passthru command or a DCMD */
3491 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3492 /* Passthru commands */
3493
3494 pthru = pci_alloc_consistent(pdev,
3495 sizeof(mega_passthru),
3496 &pthru_dma_hndl);
3497
3498 if( pthru == NULL ) {
3499 free_local_pdev(pdev);
3500 return (-ENOMEM);
3501 }
3502
3503 /*
3504 * The user passthru structure
3505 */
3506 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3507
3508 /*
3509 * Copy in the user passthru here.
3510 */
3511 if( copy_from_user(pthru, upthru,
3512 sizeof(mega_passthru)) ) {
3513
3514 pci_free_consistent(pdev,
3515 sizeof(mega_passthru), pthru,
3516 pthru_dma_hndl);
3517
3518 free_local_pdev(pdev);
3519
3520 return (-EFAULT);
3521 }
3522
3523 /*
3524 * Is there a data transfer
3525 */
3526 if( pthru->dataxferlen ) {
3527 data = pci_alloc_consistent(pdev,
3528 pthru->dataxferlen,
3529 &data_dma_hndl);
3530
3531 if( data == NULL ) {
3532 pci_free_consistent(pdev,
3533 sizeof(mega_passthru),
3534 pthru,
3535 pthru_dma_hndl);
3536
3537 free_local_pdev(pdev);
3538
3539 return (-ENOMEM);
3540 }
3541
3542 /*
3543 * Save the user address and point the kernel
3544 * address at just allocated memory
3545 */
3546 uxferaddr = pthru->dataxferaddr;
3547 pthru->dataxferaddr = data_dma_hndl;
3548 }
3549
3550
3551 /*
3552 * Is data coming down-stream
3553 */
3554 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3555 /*
3556 * Get the user data
3557 */
3558 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3559 pthru->dataxferlen) ) {
3560 rval = (-EFAULT);
3561 goto freemem_and_return;
3562 }
3563 }
3564
3565 memset(&mc, 0, sizeof(megacmd_t));
3566
3567 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3568 mc.xferaddr = (u32)pthru_dma_hndl;
3569
3570 /*
3571 * Issue the command
3572 */
3573 mega_internal_command(adapter, &mc, pthru);
3574
3575 rval = mega_n_to_m((void __user *)arg, &mc);
3576
3577 if( rval ) goto freemem_and_return;
3578
3579
3580 /*
3581 * Is data going up-stream
3582 */
3583 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3584 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3585 pthru->dataxferlen) ) {
3586 rval = (-EFAULT);
3587 }
3588 }
3589
3590 /*
3591 * Send the request sense data also, irrespective of
3592 * whether the user has asked for it or not.
3593 */
3594 if (copy_to_user(upthru->reqsensearea,
3595 pthru->reqsensearea, 14))
3596 rval = -EFAULT;
3597
3598 freemem_and_return:
3599 if( pthru->dataxferlen ) {
3600 pci_free_consistent(pdev,
3601 pthru->dataxferlen, data,
3602 data_dma_hndl);
3603 }
3604
3605 pci_free_consistent(pdev, sizeof(mega_passthru),
3606 pthru, pthru_dma_hndl);
3607
3608 free_local_pdev(pdev);
3609
3610 return rval;
3611 }
3612 else {
3613 /* DCMD commands */
3614
3615 /*
3616 * Is there a data transfer
3617 */
3618 if( uioc.xferlen ) {
3619 data = pci_alloc_consistent(pdev,
3620 uioc.xferlen, &data_dma_hndl);
3621
3622 if( data == NULL ) {
3623 free_local_pdev(pdev);
3624 return (-ENOMEM);
3625 }
3626
3627 uxferaddr = MBOX(uioc)->xferaddr;
3628 }
3629
3630 /*
3631 * Is data coming down-stream
3632 */
3633 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3634 /*
3635 * Get the user data
3636 */
3637 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3638 uioc.xferlen) ) {
3639
3640 pci_free_consistent(pdev,
3641 uioc.xferlen,
3642 data, data_dma_hndl);
3643
3644 free_local_pdev(pdev);
3645
3646 return (-EFAULT);
3647 }
3648 }
3649
3650 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3651
3652 mc.xferaddr = (u32)data_dma_hndl;
3653
3654 /*
3655 * Issue the command
3656 */
3657 mega_internal_command(adapter, &mc, NULL);
3658
3659 rval = mega_n_to_m((void __user *)arg, &mc);
3660
3661 if( rval ) {
3662 if( uioc.xferlen ) {
3663 pci_free_consistent(pdev,
3664 uioc.xferlen, data,
3665 data_dma_hndl);
3666 }
3667
3668 free_local_pdev(pdev);
3669
3670 return rval;
3671 }
3672
3673 /*
3674 * Is data going up-stream
3675 */
3676 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3677 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3678 uioc.xferlen) ) {
3679
3680 rval = (-EFAULT);
3681 }
3682 }
3683
3684 if( uioc.xferlen ) {
3685 pci_free_consistent(pdev,
3686 uioc.xferlen, data,
3687 data_dma_hndl);
3688 }
3689
3690 free_local_pdev(pdev);
3691
3692 return rval;
3693 }
3694
3695 default:
3696 return (-EINVAL);
3697 }
3698
3699 return 0;
3700 }
3701
3702 static long
3703 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3704 {
3705 int ret;
3706
3707 mutex_lock(&megadev_mutex);
3708 ret = megadev_ioctl(filep, cmd, arg);
3709 mutex_unlock(&megadev_mutex);
3710
3711 return ret;
3712 }
3713
3714 /**
3715 * mega_m_to_n()
3716 * @arg - user address
3717 * @uioc - new ioctl structure
3718 *
3719 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3720 * structure
3721 *
3722 * Converts the older mimd ioctl structure to newer NIT structure
3723 */
3724 static int
3725 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3726 {
3727 struct uioctl_t uioc_mimd;
3728 char signature[8] = {0};
3729 u8 opcode;
3730 u8 subopcode;
3731
3732
3733 /*
3734 * check is the application conforms to NIT. We do not have to do much
3735 * in that case.
3736 * We exploit the fact that the signature is stored in the very
3737 * beginning of the structure.
3738 */
3739
3740 if( copy_from_user(signature, arg, 7) )
3741 return (-EFAULT);
3742
3743 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3744
3745 /*
3746 * NOTE NOTE: The nit ioctl is still under flux because of
3747 * change of mailbox definition, in HPE. No applications yet
3748 * use this interface and let's not have applications use this
3749 * interface till the new specifitions are in place.
3750 */
3751 return -EINVAL;
3752 #if 0
3753 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3754 return (-EFAULT);
3755 return 0;
3756 #endif
3757 }
3758
3759 /*
3760 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3761 *
3762 * Get the user ioctl structure
3763 */
3764 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3765 return (-EFAULT);
3766
3767
3768 /*
3769 * Get the opcode and subopcode for the commands
3770 */
3771 opcode = uioc_mimd.ui.fcs.opcode;
3772 subopcode = uioc_mimd.ui.fcs.subopcode;
3773
3774 switch (opcode) {
3775 case 0x82:
3776
3777 switch (subopcode) {
3778
3779 case MEGAIOC_QDRVRVER: /* Query driver version */
3780 uioc->opcode = GET_DRIVER_VER;
3781 uioc->uioc_uaddr = uioc_mimd.data;
3782 break;
3783
3784 case MEGAIOC_QNADAP: /* Get # of adapters */
3785 uioc->opcode = GET_N_ADAP;
3786 uioc->uioc_uaddr = uioc_mimd.data;
3787 break;
3788
3789 case MEGAIOC_QADAPINFO: /* Get adapter information */
3790 uioc->opcode = GET_ADAP_INFO;
3791 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3792 uioc->uioc_uaddr = uioc_mimd.data;
3793 break;
3794
3795 default:
3796 return(-EINVAL);
3797 }
3798
3799 break;
3800
3801
3802 case 0x81:
3803
3804 uioc->opcode = MBOX_CMD;
3805 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3806
3807 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3808
3809 uioc->xferlen = uioc_mimd.ui.fcs.length;
3810
3811 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3812 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3813
3814 break;
3815
3816 case 0x80:
3817
3818 uioc->opcode = MBOX_CMD;
3819 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3820
3821 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3822
3823 /*
3824 * Choose the xferlen bigger of input and output data
3825 */
3826 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3827 uioc_mimd.outlen : uioc_mimd.inlen;
3828
3829 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3830 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3831
3832 break;
3833
3834 default:
3835 return (-EINVAL);
3836
3837 }
3838
3839 return 0;
3840 }
3841
3842 /*
3843 * mega_n_to_m()
3844 * @arg - user address
3845 * @mc - mailbox command
3846 *
3847 * Updates the status information to the application, depending on application
3848 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3849 */
3850 static int
3851 mega_n_to_m(void __user *arg, megacmd_t *mc)
3852 {
3853 nitioctl_t __user *uiocp;
3854 megacmd_t __user *umc;
3855 mega_passthru __user *upthru;
3856 struct uioctl_t __user *uioc_mimd;
3857 char signature[8] = {0};
3858
3859 /*
3860 * check is the application conforms to NIT.
3861 */
3862 if( copy_from_user(signature, arg, 7) )
3863 return -EFAULT;
3864
3865 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3866
3867 uiocp = arg;
3868
3869 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3870 return (-EFAULT);
3871
3872 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3873
3874 umc = MBOX_P(uiocp);
3875
3876 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3877 return -EFAULT;
3878
3879 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3880 return (-EFAULT);
3881 }
3882 }
3883 else {
3884 uioc_mimd = arg;
3885
3886 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3887 return (-EFAULT);
3888
3889 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3890
3891 umc = (megacmd_t __user *)uioc_mimd->mbox;
3892
3893 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3894 return (-EFAULT);
3895
3896 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3897 return (-EFAULT);
3898 }
3899 }
3900
3901 return 0;
3902 }
3903
3904
3905 /*
3906 * MEGARAID 'FW' commands.
3907 */
3908
3909 /**
3910 * mega_is_bios_enabled()
3911 * @adapter - pointer to our soft state
3912 *
3913 * issue command to find out if the BIOS is enabled for this controller
3914 */
3915 static int
3916 mega_is_bios_enabled(adapter_t *adapter)
3917 {
3918 unsigned char raw_mbox[sizeof(struct mbox_out)];
3919 mbox_t *mbox;
3920 int ret;
3921
3922 mbox = (mbox_t *)raw_mbox;
3923
3924 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3925
3926 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3927
3928 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3929
3930 raw_mbox[0] = IS_BIOS_ENABLED;
3931 raw_mbox[2] = GET_BIOS;
3932
3933
3934 ret = issue_scb_block(adapter, raw_mbox);
3935
3936 return *(char *)adapter->mega_buffer;
3937 }
3938
3939
3940 /**
3941 * mega_enum_raid_scsi()
3942 * @adapter - pointer to our soft state
3943 *
3944 * Find out what channels are RAID/SCSI. This information is used to
3945 * differentiate the virtual channels and physical channels and to support
3946 * ROMB feature and non-disk devices.
3947 */
3948 static void
3949 mega_enum_raid_scsi(adapter_t *adapter)
3950 {
3951 unsigned char raw_mbox[sizeof(struct mbox_out)];
3952 mbox_t *mbox;
3953 int i;
3954
3955 mbox = (mbox_t *)raw_mbox;
3956
3957 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3958
3959 /*
3960 * issue command to find out what channels are raid/scsi
3961 */
3962 raw_mbox[0] = CHNL_CLASS;
3963 raw_mbox[2] = GET_CHNL_CLASS;
3964
3965 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3966
3967 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3968
3969 /*
3970 * Non-ROMB firmware fail this command, so all channels
3971 * must be shown RAID
3972 */
3973 adapter->mega_ch_class = 0xFF;
3974
3975 if(!issue_scb_block(adapter, raw_mbox)) {
3976 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3977
3978 }
3979
3980 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3981 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3982 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3983 i);
3984 }
3985 else {
3986 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3987 i);
3988 }
3989 }
3990
3991 return;
3992 }
3993
3994
3995 /**
3996 * mega_get_boot_drv()
3997 * @adapter - pointer to our soft state
3998 *
3999 * Find out which device is the boot device. Note, any logical drive or any
4000 * phyical device (e.g., a CDROM) can be designated as a boot device.
4001 */
4002 static void
4003 mega_get_boot_drv(adapter_t *adapter)
4004 {
4005 struct private_bios_data *prv_bios_data;
4006 unsigned char raw_mbox[sizeof(struct mbox_out)];
4007 mbox_t *mbox;
4008 u16 cksum = 0;
4009 u8 *cksum_p;
4010 u8 boot_pdrv;
4011 int i;
4012
4013 mbox = (mbox_t *)raw_mbox;
4014
4015 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4016
4017 raw_mbox[0] = BIOS_PVT_DATA;
4018 raw_mbox[2] = GET_BIOS_PVT_DATA;
4019
4020 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4021
4022 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4023
4024 adapter->boot_ldrv_enabled = 0;
4025 adapter->boot_ldrv = 0;
4026
4027 adapter->boot_pdrv_enabled = 0;
4028 adapter->boot_pdrv_ch = 0;
4029 adapter->boot_pdrv_tgt = 0;
4030
4031 if(issue_scb_block(adapter, raw_mbox) == 0) {
4032 prv_bios_data =
4033 (struct private_bios_data *)adapter->mega_buffer;
4034
4035 cksum = 0;
4036 cksum_p = (char *)prv_bios_data;
4037 for (i = 0; i < 14; i++ ) {
4038 cksum += (u16)(*cksum_p++);
4039 }
4040
4041 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4042
4043 /*
4044 * If MSB is set, a physical drive is set as boot
4045 * device
4046 */
4047 if( prv_bios_data->boot_drv & 0x80 ) {
4048 adapter->boot_pdrv_enabled = 1;
4049 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4050 adapter->boot_pdrv_ch = boot_pdrv / 16;
4051 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4052 }
4053 else {
4054 adapter->boot_ldrv_enabled = 1;
4055 adapter->boot_ldrv = prv_bios_data->boot_drv;
4056 }
4057 }
4058 }
4059
4060 }
4061
4062 /**
4063 * mega_support_random_del()
4064 * @adapter - pointer to our soft state
4065 *
4066 * Find out if this controller supports random deletion and addition of
4067 * logical drives
4068 */
4069 static int
4070 mega_support_random_del(adapter_t *adapter)
4071 {
4072 unsigned char raw_mbox[sizeof(struct mbox_out)];
4073 mbox_t *mbox;
4074 int rval;
4075
4076 mbox = (mbox_t *)raw_mbox;
4077
4078 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4079
4080 /*
4081 * issue command
4082 */
4083 raw_mbox[0] = FC_DEL_LOGDRV;
4084 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4085
4086 rval = issue_scb_block(adapter, raw_mbox);
4087
4088 return !rval;
4089 }
4090
4091
4092 /**
4093 * mega_support_ext_cdb()
4094 * @adapter - pointer to our soft state
4095 *
4096 * Find out if this firmware support cdblen > 10
4097 */
4098 static int
4099 mega_support_ext_cdb(adapter_t *adapter)
4100 {
4101 unsigned char raw_mbox[sizeof(struct mbox_out)];
4102 mbox_t *mbox;
4103 int rval;
4104
4105 mbox = (mbox_t *)raw_mbox;
4106
4107 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4108 /*
4109 * issue command to find out if controller supports extended CDBs.
4110 */
4111 raw_mbox[0] = 0xA4;
4112 raw_mbox[2] = 0x16;
4113
4114 rval = issue_scb_block(adapter, raw_mbox);
4115
4116 return !rval;
4117 }
4118
4119
4120 /**
4121 * mega_del_logdrv()
4122 * @adapter - pointer to our soft state
4123 * @logdrv - logical drive to be deleted
4124 *
4125 * Delete the specified logical drive. It is the responsibility of the user
4126 * app to let the OS know about this operation.
4127 */
4128 static int
4129 mega_del_logdrv(adapter_t *adapter, int logdrv)
4130 {
4131 unsigned long flags;
4132 scb_t *scb;
4133 int rval;
4134
4135 /*
4136 * Stop sending commands to the controller, queue them internally.
4137 * When deletion is complete, ISR will flush the queue.
4138 */
4139 atomic_set(&adapter->quiescent, 1);
4140
4141 /*
4142 * Wait till all the issued commands are complete and there are no
4143 * commands in the pending queue
4144 */
4145 while (atomic_read(&adapter->pend_cmds) > 0 ||
4146 !list_empty(&adapter->pending_list))
4147 msleep(1000); /* sleep for 1s */
4148
4149 rval = mega_do_del_logdrv(adapter, logdrv);
4150
4151 spin_lock_irqsave(&adapter->lock, flags);
4152
4153 /*
4154 * If delete operation was successful, add 0x80 to the logical drive
4155 * ids for commands in the pending queue.
4156 */
4157 if (adapter->read_ldidmap) {
4158 struct list_head *pos;
4159 list_for_each(pos, &adapter->pending_list) {
4160 scb = list_entry(pos, scb_t, list);
4161 if (scb->pthru->logdrv < 0x80 )
4162 scb->pthru->logdrv += 0x80;
4163 }
4164 }
4165
4166 atomic_set(&adapter->quiescent, 0);
4167
4168 mega_runpendq(adapter);
4169
4170 spin_unlock_irqrestore(&adapter->lock, flags);
4171
4172 return rval;
4173 }
4174
4175
4176 static int
4177 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4178 {
4179 megacmd_t mc;
4180 int rval;
4181
4182 memset( &mc, 0, sizeof(megacmd_t));
4183
4184 mc.cmd = FC_DEL_LOGDRV;
4185 mc.opcode = OP_DEL_LOGDRV;
4186 mc.subopcode = logdrv;
4187
4188 rval = mega_internal_command(adapter, &mc, NULL);
4189
4190 /* log this event */
4191 if(rval) {
4192 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4193 return rval;
4194 }
4195
4196 /*
4197 * After deleting first logical drive, the logical drives must be
4198 * addressed by adding 0x80 to the logical drive id.
4199 */
4200 adapter->read_ldidmap = 1;
4201
4202 return rval;
4203 }
4204
4205
4206 /**
4207 * mega_get_max_sgl()
4208 * @adapter - pointer to our soft state
4209 *
4210 * Find out the maximum number of scatter-gather elements supported by this
4211 * version of the firmware
4212 */
4213 static void
4214 mega_get_max_sgl(adapter_t *adapter)
4215 {
4216 unsigned char raw_mbox[sizeof(struct mbox_out)];
4217 mbox_t *mbox;
4218
4219 mbox = (mbox_t *)raw_mbox;
4220
4221 memset(mbox, 0, sizeof(raw_mbox));
4222
4223 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4224
4225 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4226
4227 raw_mbox[0] = MAIN_MISC_OPCODE;
4228 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4229
4230
4231 if( issue_scb_block(adapter, raw_mbox) ) {
4232 /*
4233 * f/w does not support this command. Choose the default value
4234 */
4235 adapter->sglen = MIN_SGLIST;
4236 }
4237 else {
4238 adapter->sglen = *((char *)adapter->mega_buffer);
4239
4240 /*
4241 * Make sure this is not more than the resources we are
4242 * planning to allocate
4243 */
4244 if ( adapter->sglen > MAX_SGLIST )
4245 adapter->sglen = MAX_SGLIST;
4246 }
4247
4248 return;
4249 }
4250
4251
4252 /**
4253 * mega_support_cluster()
4254 * @adapter - pointer to our soft state
4255 *
4256 * Find out if this firmware support cluster calls.
4257 */
4258 static int
4259 mega_support_cluster(adapter_t *adapter)
4260 {
4261 unsigned char raw_mbox[sizeof(struct mbox_out)];
4262 mbox_t *mbox;
4263
4264 mbox = (mbox_t *)raw_mbox;
4265
4266 memset(mbox, 0, sizeof(raw_mbox));
4267
4268 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4269
4270 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4271
4272 /*
4273 * Try to get the initiator id. This command will succeed iff the
4274 * clustering is available on this HBA.
4275 */
4276 raw_mbox[0] = MEGA_GET_TARGET_ID;
4277
4278 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4279
4280 /*
4281 * Cluster support available. Get the initiator target id.
4282 * Tell our id to mid-layer too.
4283 */
4284 adapter->this_id = *(u32 *)adapter->mega_buffer;
4285 adapter->host->this_id = adapter->this_id;
4286
4287 return 1;
4288 }
4289
4290 return 0;
4291 }
4292
4293 #ifdef CONFIG_PROC_FS
4294 /**
4295 * mega_adapinq()
4296 * @adapter - pointer to our soft state
4297 * @dma_handle - DMA address of the buffer
4298 *
4299 * Issue internal commands while interrupts are available.
4300 * We only issue direct mailbox commands from within the driver. ioctl()
4301 * interface using these routines can issue passthru commands.
4302 */
4303 static int
4304 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4305 {
4306 megacmd_t mc;
4307
4308 memset(&mc, 0, sizeof(megacmd_t));
4309
4310 if( adapter->flag & BOARD_40LD ) {
4311 mc.cmd = FC_NEW_CONFIG;
4312 mc.opcode = NC_SUBOP_ENQUIRY3;
4313 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4314 }
4315 else {
4316 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4317 }
4318
4319 mc.xferaddr = (u32)dma_handle;
4320
4321 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4322 return -1;
4323 }
4324
4325 return 0;
4326 }
4327
4328
4329 /** mega_internal_dev_inquiry()
4330 * @adapter - pointer to our soft state
4331 * @ch - channel for this device
4332 * @tgt - ID of this device
4333 * @buf_dma_handle - DMA address of the buffer
4334 *
4335 * Issue the scsi inquiry for the specified device.
4336 */
4337 static int
4338 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4339 dma_addr_t buf_dma_handle)
4340 {
4341 mega_passthru *pthru;
4342 dma_addr_t pthru_dma_handle;
4343 megacmd_t mc;
4344 int rval;
4345 struct pci_dev *pdev;
4346
4347
4348 /*
4349 * For all internal commands, the buffer must be allocated in <4GB
4350 * address range
4351 */
4352 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4353
4354 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4355 &pthru_dma_handle);
4356
4357 if( pthru == NULL ) {
4358 free_local_pdev(pdev);
4359 return -1;
4360 }
4361
4362 pthru->timeout = 2;
4363 pthru->ars = 1;
4364 pthru->reqsenselen = 14;
4365 pthru->islogical = 0;
4366
4367 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4368
4369 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4370
4371 pthru->cdblen = 6;
4372
4373 pthru->cdb[0] = INQUIRY;
4374 pthru->cdb[1] = 0;
4375 pthru->cdb[2] = 0;
4376 pthru->cdb[3] = 0;
4377 pthru->cdb[4] = 255;
4378 pthru->cdb[5] = 0;
4379
4380
4381 pthru->dataxferaddr = (u32)buf_dma_handle;
4382 pthru->dataxferlen = 256;
4383
4384 memset(&mc, 0, sizeof(megacmd_t));
4385
4386 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4387 mc.xferaddr = (u32)pthru_dma_handle;
4388
4389 rval = mega_internal_command(adapter, &mc, pthru);
4390
4391 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4392 pthru_dma_handle);
4393
4394 free_local_pdev(pdev);
4395
4396 return rval;
4397 }
4398 #endif
4399
4400 /**
4401 * mega_internal_command()
4402 * @adapter - pointer to our soft state
4403 * @mc - the mailbox command
4404 * @pthru - Passthru structure for DCDB commands
4405 *
4406 * Issue the internal commands in interrupt mode.
4407 * The last argument is the address of the passthru structure if the command
4408 * to be fired is a passthru command
4409 *
4410 * lockscope specifies whether the caller has already acquired the lock. Of
4411 * course, the caller must know which lock we are talking about.
4412 *
4413 * Note: parameter 'pthru' is null for non-passthru commands.
4414 */
4415 static int
4416 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4417 {
4418 Scsi_Cmnd *scmd;
4419 struct scsi_device *sdev;
4420 scb_t *scb;
4421 int rval;
4422
4423 scmd = scsi_allocate_command(GFP_KERNEL);
4424 if (!scmd)
4425 return -ENOMEM;
4426
4427 /*
4428 * The internal commands share one command id and hence are
4429 * serialized. This is so because we want to reserve maximum number of
4430 * available command ids for the I/O commands.
4431 */
4432 mutex_lock(&adapter->int_mtx);
4433
4434 scb = &adapter->int_scb;
4435 memset(scb, 0, sizeof(scb_t));
4436
4437 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
4438 scmd->device = sdev;
4439
4440 memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
4441 scmd->cmnd = adapter->int_cdb;
4442 scmd->device->host = adapter->host;
4443 scmd->host_scribble = (void *)scb;
4444 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4445
4446 scb->state |= SCB_ACTIVE;
4447 scb->cmd = scmd;
4448
4449 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4450
4451 /*
4452 * Is it a passthru command
4453 */
4454 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4455
4456 scb->pthru = pthru;
4457 }
4458
4459 scb->idx = CMDID_INT_CMDS;
4460
4461 megaraid_queue_lck(scmd, mega_internal_done);
4462
4463 wait_for_completion(&adapter->int_waitq);
4464
4465 rval = scmd->result;
4466 mc->status = scmd->result;
4467 kfree(sdev);
4468
4469 /*
4470 * Print a debug message for all failed commands. Applications can use
4471 * this information.
4472 */
4473 if( scmd->result && trace_level ) {
4474 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4475 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4476 }
4477
4478 mutex_unlock(&adapter->int_mtx);
4479
4480 scsi_free_command(GFP_KERNEL, scmd);
4481
4482 return rval;
4483 }
4484
4485
4486 /**
4487 * mega_internal_done()
4488 * @scmd - internal scsi command
4489 *
4490 * Callback routine for internal commands.
4491 */
4492 static void
4493 mega_internal_done(Scsi_Cmnd *scmd)
4494 {
4495 adapter_t *adapter;
4496
4497 adapter = (adapter_t *)scmd->device->host->hostdata;
4498
4499 complete(&adapter->int_waitq);
4500
4501 }
4502
4503
4504 static struct scsi_host_template megaraid_template = {
4505 .module = THIS_MODULE,
4506 .name = "MegaRAID",
4507 .proc_name = "megaraid_legacy",
4508 .info = megaraid_info,
4509 .queuecommand = megaraid_queue,
4510 .bios_param = megaraid_biosparam,
4511 .max_sectors = MAX_SECTORS_PER_IO,
4512 .can_queue = MAX_COMMANDS,
4513 .this_id = DEFAULT_INITIATOR_ID,
4514 .sg_tablesize = MAX_SGLIST,
4515 .cmd_per_lun = DEF_CMD_PER_LUN,
4516 .use_clustering = ENABLE_CLUSTERING,
4517 .eh_abort_handler = megaraid_abort,
4518 .eh_device_reset_handler = megaraid_reset,
4519 .eh_bus_reset_handler = megaraid_reset,
4520 .eh_host_reset_handler = megaraid_reset,
4521 };
4522
4523 static int __devinit
4524 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4525 {
4526 struct Scsi_Host *host;
4527 adapter_t *adapter;
4528 unsigned long mega_baseport, tbase, flag = 0;
4529 u16 subsysid, subsysvid;
4530 u8 pci_bus, pci_dev_func;
4531 int irq, i, j;
4532 int error = -ENODEV;
4533
4534 if (pci_enable_device(pdev))
4535 goto out;
4536 pci_set_master(pdev);
4537
4538 pci_bus = pdev->bus->number;
4539 pci_dev_func = pdev->devfn;
4540
4541 /*
4542 * The megaraid3 stuff reports the ID of the Intel part which is not
4543 * remotely specific to the megaraid
4544 */
4545 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4546 u16 magic;
4547 /*
4548 * Don't fall over the Compaq management cards using the same
4549 * PCI identifier
4550 */
4551 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4552 pdev->subsystem_device == 0xC000)
4553 return -ENODEV;
4554 /* Now check the magic signature byte */
4555 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4556 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4557 return -ENODEV;
4558 /* Ok it is probably a megaraid */
4559 }
4560
4561 /*
4562 * For these vendor and device ids, signature offsets are not
4563 * valid and 64 bit is implicit
4564 */
4565 if (id->driver_data & BOARD_64BIT)
4566 flag |= BOARD_64BIT;
4567 else {
4568 u32 magic64;
4569
4570 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4571 if (magic64 == HBA_SIGNATURE_64BIT)
4572 flag |= BOARD_64BIT;
4573 }
4574
4575 subsysvid = pdev->subsystem_vendor;
4576 subsysid = pdev->subsystem_device;
4577
4578 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4579 id->vendor, id->device, pci_bus);
4580
4581 printk("slot %d:func %d\n",
4582 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4583
4584 /* Read the base port and IRQ from PCI */
4585 mega_baseport = pci_resource_start(pdev, 0);
4586 irq = pdev->irq;
4587
4588 tbase = mega_baseport;
4589 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4590 flag |= BOARD_MEMMAP;
4591
4592 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4593 printk(KERN_WARNING "megaraid: mem region busy!\n");
4594 goto out_disable_device;
4595 }
4596
4597 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4598 if (!mega_baseport) {
4599 printk(KERN_WARNING
4600 "megaraid: could not map hba memory\n");
4601 goto out_release_region;
4602 }
4603 } else {
4604 flag |= BOARD_IOMAP;
4605 mega_baseport += 0x10;
4606
4607 if (!request_region(mega_baseport, 16, "megaraid"))
4608 goto out_disable_device;
4609 }
4610
4611 /* Initialize SCSI Host structure */
4612 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4613 if (!host)
4614 goto out_iounmap;
4615
4616 adapter = (adapter_t *)host->hostdata;
4617 memset(adapter, 0, sizeof(adapter_t));
4618
4619 printk(KERN_NOTICE
4620 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4621 host->host_no, mega_baseport, irq);
4622
4623 adapter->base = mega_baseport;
4624 if (flag & BOARD_MEMMAP)
4625 adapter->mmio_base = (void __iomem *) mega_baseport;
4626
4627 INIT_LIST_HEAD(&adapter->free_list);
4628 INIT_LIST_HEAD(&adapter->pending_list);
4629 INIT_LIST_HEAD(&adapter->completed_list);
4630
4631 adapter->flag = flag;
4632 spin_lock_init(&adapter->lock);
4633
4634 host->cmd_per_lun = max_cmd_per_lun;
4635 host->max_sectors = max_sectors_per_io;
4636
4637 adapter->dev = pdev;
4638 adapter->host = host;
4639
4640 adapter->host->irq = irq;
4641
4642 if (flag & BOARD_MEMMAP)
4643 adapter->host->base = tbase;
4644 else {
4645 adapter->host->io_port = tbase;
4646 adapter->host->n_io_port = 16;
4647 }
4648
4649 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4650
4651 /*
4652 * Allocate buffer to issue internal commands.
4653 */
4654 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4655 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4656 if (!adapter->mega_buffer) {
4657 printk(KERN_WARNING "megaraid: out of RAM.\n");
4658 goto out_host_put;
4659 }
4660
4661 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4662 if (!adapter->scb_list) {
4663 printk(KERN_WARNING "megaraid: out of RAM.\n");
4664 goto out_free_cmd_buffer;
4665 }
4666
4667 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4668 megaraid_isr_memmapped : megaraid_isr_iomapped,
4669 IRQF_SHARED, "megaraid", adapter)) {
4670 printk(KERN_WARNING
4671 "megaraid: Couldn't register IRQ %d!\n", irq);
4672 goto out_free_scb_list;
4673 }
4674
4675 if (mega_setup_mailbox(adapter))
4676 goto out_free_irq;
4677
4678 if (mega_query_adapter(adapter))
4679 goto out_free_mbox;
4680
4681 /*
4682 * Have checks for some buggy f/w
4683 */
4684 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4685 /*
4686 * Which firmware
4687 */
4688 if (!strcmp(adapter->fw_version, "3.00") ||
4689 !strcmp(adapter->fw_version, "3.01")) {
4690
4691 printk( KERN_WARNING
4692 "megaraid: Your card is a Dell PERC "
4693 "2/SC RAID controller with "
4694 "firmware\nmegaraid: 3.00 or 3.01. "
4695 "This driver is known to have "
4696 "corruption issues\nmegaraid: with "
4697 "those firmware versions on this "
4698 "specific card. In order\nmegaraid: "
4699 "to protect your data, please upgrade "
4700 "your firmware to version\nmegaraid: "
4701 "3.10 or later, available from the "
4702 "Dell Technical Support web\n"
4703 "megaraid: site at\nhttp://support."
4704 "dell.com/us/en/filelib/download/"
4705 "index.asp?fileid=2940\n"
4706 );
4707 }
4708 }
4709
4710 /*
4711 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4712 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4713 * support, since this firmware cannot handle 64 bit
4714 * addressing
4715 */
4716 if ((subsysvid == HP_SUBSYS_VID) &&
4717 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4718 /*
4719 * which firmware
4720 */
4721 if (!strcmp(adapter->fw_version, "H01.07") ||
4722 !strcmp(adapter->fw_version, "H01.08") ||
4723 !strcmp(adapter->fw_version, "H01.09") ) {
4724 printk(KERN_WARNING
4725 "megaraid: Firmware H.01.07, "
4726 "H.01.08, and H.01.09 on 1M/2M "
4727 "controllers\n"
4728 "megaraid: do not support 64 bit "
4729 "addressing.\nmegaraid: DISABLING "
4730 "64 bit support.\n");
4731 adapter->flag &= ~BOARD_64BIT;
4732 }
4733 }
4734
4735 if (mega_is_bios_enabled(adapter))
4736 mega_hbas[hba_count].is_bios_enabled = 1;
4737 mega_hbas[hba_count].hostdata_addr = adapter;
4738
4739 /*
4740 * Find out which channel is raid and which is scsi. This is
4741 * for ROMB support.
4742 */
4743 mega_enum_raid_scsi(adapter);
4744
4745 /*
4746 * Find out if a logical drive is set as the boot drive. If
4747 * there is one, will make that as the first logical drive.
4748 * ROMB: Do we have to boot from a physical drive. Then all
4749 * the physical drives would appear before the logical disks.
4750 * Else, all the physical drives would be exported to the mid
4751 * layer after logical drives.
4752 */
4753 mega_get_boot_drv(adapter);
4754
4755 if (adapter->boot_pdrv_enabled) {
4756 j = adapter->product_info.nchannels;
4757 for( i = 0; i < j; i++ )
4758 adapter->logdrv_chan[i] = 0;
4759 for( i = j; i < NVIRT_CHAN + j; i++ )
4760 adapter->logdrv_chan[i] = 1;
4761 } else {
4762 for (i = 0; i < NVIRT_CHAN; i++)
4763 adapter->logdrv_chan[i] = 1;
4764 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4765 adapter->logdrv_chan[i] = 0;
4766 adapter->mega_ch_class <<= NVIRT_CHAN;
4767 }
4768
4769 /*
4770 * Do we support random deletion and addition of logical
4771 * drives
4772 */
4773 adapter->read_ldidmap = 0; /* set it after first logdrv
4774 delete cmd */
4775 adapter->support_random_del = mega_support_random_del(adapter);
4776
4777 /* Initialize SCBs */
4778 if (mega_init_scb(adapter))
4779 goto out_free_mbox;
4780
4781 /*
4782 * Reset the pending commands counter
4783 */
4784 atomic_set(&adapter->pend_cmds, 0);
4785
4786 /*
4787 * Reset the adapter quiescent flag
4788 */
4789 atomic_set(&adapter->quiescent, 0);
4790
4791 hba_soft_state[hba_count] = adapter;
4792
4793 /*
4794 * Fill in the structure which needs to be passed back to the
4795 * application when it does an ioctl() for controller related
4796 * information.
4797 */
4798 i = hba_count;
4799
4800 mcontroller[i].base = mega_baseport;
4801 mcontroller[i].irq = irq;
4802 mcontroller[i].numldrv = adapter->numldrv;
4803 mcontroller[i].pcibus = pci_bus;
4804 mcontroller[i].pcidev = id->device;
4805 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4806 mcontroller[i].pciid = -1;
4807 mcontroller[i].pcivendor = id->vendor;
4808 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4809 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4810
4811
4812 /* Set the Mode of addressing to 64 bit if we can */
4813 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4814 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4815 adapter->has_64bit_addr = 1;
4816 } else {
4817 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4818 adapter->has_64bit_addr = 0;
4819 }
4820
4821 mutex_init(&adapter->int_mtx);
4822 init_completion(&adapter->int_waitq);
4823
4824 adapter->this_id = DEFAULT_INITIATOR_ID;
4825 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4826
4827 #if MEGA_HAVE_CLUSTERING
4828 /*
4829 * Is cluster support enabled on this controller
4830 * Note: In a cluster the HBAs ( the initiators ) will have
4831 * different target IDs and we cannot assume it to be 7. Call
4832 * to mega_support_cluster() will get the target ids also if
4833 * the cluster support is available
4834 */
4835 adapter->has_cluster = mega_support_cluster(adapter);
4836 if (adapter->has_cluster) {
4837 printk(KERN_NOTICE
4838 "megaraid: Cluster driver, initiator id:%d\n",
4839 adapter->this_id);
4840 }
4841 #endif
4842
4843 pci_set_drvdata(pdev, host);
4844
4845 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4846
4847 error = scsi_add_host(host, &pdev->dev);
4848 if (error)
4849 goto out_free_mbox;
4850
4851 scsi_scan_host(host);
4852 hba_count++;
4853 return 0;
4854
4855 out_free_mbox:
4856 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4857 adapter->una_mbox64, adapter->una_mbox64_dma);
4858 out_free_irq:
4859 free_irq(adapter->host->irq, adapter);
4860 out_free_scb_list:
4861 kfree(adapter->scb_list);
4862 out_free_cmd_buffer:
4863 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4864 adapter->mega_buffer, adapter->buf_dma_handle);
4865 out_host_put:
4866 scsi_host_put(host);
4867 out_iounmap:
4868 if (flag & BOARD_MEMMAP)
4869 iounmap((void *)mega_baseport);
4870 out_release_region:
4871 if (flag & BOARD_MEMMAP)
4872 release_mem_region(tbase, 128);
4873 else
4874 release_region(mega_baseport, 16);
4875 out_disable_device:
4876 pci_disable_device(pdev);
4877 out:
4878 return error;
4879 }
4880
4881 static void
4882 __megaraid_shutdown(adapter_t *adapter)
4883 {
4884 u_char raw_mbox[sizeof(struct mbox_out)];
4885 mbox_t *mbox = (mbox_t *)raw_mbox;
4886 int i;
4887
4888 /* Flush adapter cache */
4889 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4890 raw_mbox[0] = FLUSH_ADAPTER;
4891
4892 free_irq(adapter->host->irq, adapter);
4893
4894 /* Issue a blocking (interrupts disabled) command to the card */
4895 issue_scb_block(adapter, raw_mbox);
4896
4897 /* Flush disks cache */
4898 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4899 raw_mbox[0] = FLUSH_SYSTEM;
4900
4901 /* Issue a blocking (interrupts disabled) command to the card */
4902 issue_scb_block(adapter, raw_mbox);
4903
4904 if (atomic_read(&adapter->pend_cmds) > 0)
4905 printk(KERN_WARNING "megaraid: pending commands!!\n");
4906
4907 /*
4908 * Have a delibrate delay to make sure all the caches are
4909 * actually flushed.
4910 */
4911 for (i = 0; i <= 10; i++)
4912 mdelay(1000);
4913 }
4914
4915 static void __devexit
4916 megaraid_remove_one(struct pci_dev *pdev)
4917 {
4918 struct Scsi_Host *host = pci_get_drvdata(pdev);
4919 adapter_t *adapter = (adapter_t *)host->hostdata;
4920
4921 scsi_remove_host(host);
4922
4923 __megaraid_shutdown(adapter);
4924
4925 /* Free our resources */
4926 if (adapter->flag & BOARD_MEMMAP) {
4927 iounmap((void *)adapter->base);
4928 release_mem_region(adapter->host->base, 128);
4929 } else
4930 release_region(adapter->base, 16);
4931
4932 mega_free_sgl(adapter);
4933
4934 #ifdef CONFIG_PROC_FS
4935 if (adapter->controller_proc_dir_entry) {
4936 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4937 remove_proc_entry("config",
4938 adapter->controller_proc_dir_entry);
4939 remove_proc_entry("mailbox",
4940 adapter->controller_proc_dir_entry);
4941 #if MEGA_HAVE_ENH_PROC
4942 remove_proc_entry("rebuild-rate",
4943 adapter->controller_proc_dir_entry);
4944 remove_proc_entry("battery-status",
4945 adapter->controller_proc_dir_entry);
4946
4947 remove_proc_entry("diskdrives-ch0",
4948 adapter->controller_proc_dir_entry);
4949 remove_proc_entry("diskdrives-ch1",
4950 adapter->controller_proc_dir_entry);
4951 remove_proc_entry("diskdrives-ch2",
4952 adapter->controller_proc_dir_entry);
4953 remove_proc_entry("diskdrives-ch3",
4954 adapter->controller_proc_dir_entry);
4955
4956 remove_proc_entry("raiddrives-0-9",
4957 adapter->controller_proc_dir_entry);
4958 remove_proc_entry("raiddrives-10-19",
4959 adapter->controller_proc_dir_entry);
4960 remove_proc_entry("raiddrives-20-29",
4961 adapter->controller_proc_dir_entry);
4962 remove_proc_entry("raiddrives-30-39",
4963 adapter->controller_proc_dir_entry);
4964 #endif
4965 {
4966 char buf[12] = { 0 };
4967 sprintf(buf, "hba%d", adapter->host->host_no);
4968 remove_proc_entry(buf, mega_proc_dir_entry);
4969 }
4970 }
4971 #endif
4972
4973 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4974 adapter->mega_buffer, adapter->buf_dma_handle);
4975 kfree(adapter->scb_list);
4976 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4977 adapter->una_mbox64, adapter->una_mbox64_dma);
4978
4979 scsi_host_put(host);
4980 pci_disable_device(pdev);
4981
4982 hba_count--;
4983 }
4984
4985 static void
4986 megaraid_shutdown(struct pci_dev *pdev)
4987 {
4988 struct Scsi_Host *host = pci_get_drvdata(pdev);
4989 adapter_t *adapter = (adapter_t *)host->hostdata;
4990
4991 __megaraid_shutdown(adapter);
4992 }
4993
4994 static struct pci_device_id megaraid_pci_tbl[] = {
4995 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4996 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4997 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4998 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4999 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5000 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5001 {0,}
5002 };
5003 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5004
5005 static struct pci_driver megaraid_pci_driver = {
5006 .name = "megaraid_legacy",
5007 .id_table = megaraid_pci_tbl,
5008 .probe = megaraid_probe_one,
5009 .remove = __devexit_p(megaraid_remove_one),
5010 .shutdown = megaraid_shutdown,
5011 };
5012
5013 static int __init megaraid_init(void)
5014 {
5015 int error;
5016
5017 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5018 max_cmd_per_lun = MAX_CMD_PER_LUN;
5019 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5020 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5021
5022 #ifdef CONFIG_PROC_FS
5023 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
5024 if (!mega_proc_dir_entry) {
5025 printk(KERN_WARNING
5026 "megaraid: failed to create megaraid root\n");
5027 }
5028 #endif
5029 error = pci_register_driver(&megaraid_pci_driver);
5030 if (error) {
5031 #ifdef CONFIG_PROC_FS
5032 remove_proc_entry("megaraid", NULL);
5033 #endif
5034 return error;
5035 }
5036
5037 /*
5038 * Register the driver as a character device, for applications
5039 * to access it for ioctls.
5040 * First argument (major) to register_chrdev implies a dynamic
5041 * major number allocation.
5042 */
5043 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5044 if (!major) {
5045 printk(KERN_WARNING
5046 "megaraid: failed to register char device\n");
5047 }
5048
5049 return 0;
5050 }
5051
5052 static void __exit megaraid_exit(void)
5053 {
5054 /*
5055 * Unregister the character device interface to the driver.
5056 */
5057 unregister_chrdev(major, "megadev_legacy");
5058
5059 pci_unregister_driver(&megaraid_pci_driver);
5060
5061 #ifdef CONFIG_PROC_FS
5062 remove_proc_entry("megaraid", NULL);
5063 #endif
5064 }
5065
5066 module_init(megaraid_init);
5067 module_exit(megaraid_exit);
5068
5069 /* vi: set ts=8 sw=8 tw=78: */
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree