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Merge tag 'iommu-fixes-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
[deliverable/linux.git] / drivers / scsi / megaraid.c
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/seq_file.h>
43 #include <linux/reboot.h>
44 #include <linux/module.h>
45 #include <linux/list.h>
46 #include <linux/interrupt.h>
47 #include <linux/pci.h>
48 #include <linux/init.h>
49 #include <linux/dma-mapping.h>
50 #include <linux/mutex.h>
51 #include <linux/slab.h>
52 #include <scsi/scsicam.h>
53
54 #include "scsi.h"
55 #include <scsi/scsi_host.h>
56
57 #include "megaraid.h"
58
59 #define MEGARAID_MODULE_VERSION "2.00.4"
60
61 MODULE_AUTHOR ("sju@lsil.com");
62 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
63 MODULE_LICENSE ("GPL");
64 MODULE_VERSION(MEGARAID_MODULE_VERSION);
65
66 static DEFINE_MUTEX(megadev_mutex);
67 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
68 module_param(max_cmd_per_lun, uint, 0);
69 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)");
70
71 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
72 module_param(max_sectors_per_io, ushort, 0);
73 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
74
75
76 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
77 module_param(max_mbox_busy_wait, ushort, 0);
78 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
79
80 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
81 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
82 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
83 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
84
85 /*
86 * Global variables
87 */
88
89 static int hba_count;
90 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
91 static struct proc_dir_entry *mega_proc_dir_entry;
92
93 /* For controller re-ordering */
94 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
95
96 static long
97 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
98
99 /*
100 * The File Operations structure for the serial/ioctl interface of the driver
101 */
102 static const struct file_operations megadev_fops = {
103 .owner = THIS_MODULE,
104 .unlocked_ioctl = megadev_unlocked_ioctl,
105 .open = megadev_open,
106 .llseek = noop_llseek,
107 };
108
109 /*
110 * Array to structures for storing the information about the controllers. This
111 * information is sent to the user level applications, when they do an ioctl
112 * for this information.
113 */
114 static struct mcontroller mcontroller[MAX_CONTROLLERS];
115
116 /* The current driver version */
117 static u32 driver_ver = 0x02000000;
118
119 /* major number used by the device for character interface */
120 static int major;
121
122 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
123
124
125 /*
126 * Debug variable to print some diagnostic messages
127 */
128 static int trace_level;
129
130 /**
131 * mega_setup_mailbox()
132 * @adapter - pointer to our soft state
133 *
134 * Allocates a 8 byte aligned memory for the handshake mailbox.
135 */
136 static int
137 mega_setup_mailbox(adapter_t *adapter)
138 {
139 unsigned long align;
140
141 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
142 sizeof(mbox64_t), &adapter->una_mbox64_dma);
143
144 if( !adapter->una_mbox64 ) return -1;
145
146 adapter->mbox = &adapter->una_mbox64->mbox;
147
148 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
149 (~0UL ^ 0xFUL));
150
151 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
152
153 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
154
155 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
156
157 /*
158 * Register the mailbox if the controller is an io-mapped controller
159 */
160 if( adapter->flag & BOARD_IOMAP ) {
161
162 outb(adapter->mbox_dma & 0xFF,
163 adapter->host->io_port + MBOX_PORT0);
164
165 outb((adapter->mbox_dma >> 8) & 0xFF,
166 adapter->host->io_port + MBOX_PORT1);
167
168 outb((adapter->mbox_dma >> 16) & 0xFF,
169 adapter->host->io_port + MBOX_PORT2);
170
171 outb((adapter->mbox_dma >> 24) & 0xFF,
172 adapter->host->io_port + MBOX_PORT3);
173
174 outb(ENABLE_MBOX_BYTE,
175 adapter->host->io_port + ENABLE_MBOX_REGION);
176
177 irq_ack(adapter);
178
179 irq_enable(adapter);
180 }
181
182 return 0;
183 }
184
185
186 /*
187 * mega_query_adapter()
188 * @adapter - pointer to our soft state
189 *
190 * Issue the adapter inquiry commands to the controller and find out
191 * information and parameter about the devices attached
192 */
193 static int
194 mega_query_adapter(adapter_t *adapter)
195 {
196 dma_addr_t prod_info_dma_handle;
197 mega_inquiry3 *inquiry3;
198 u8 raw_mbox[sizeof(struct mbox_out)];
199 mbox_t *mbox;
200 int retval;
201
202 /* Initialize adapter inquiry mailbox */
203
204 mbox = (mbox_t *)raw_mbox;
205
206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
207 memset(&mbox->m_out, 0, sizeof(raw_mbox));
208
209 /*
210 * Try to issue Inquiry3 command
211 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
212 * update enquiry3 structure
213 */
214 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
215
216 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
217
218 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
219 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
220 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
221
222 /* Issue a blocking command to the card */
223 if ((retval = issue_scb_block(adapter, raw_mbox))) {
224 /* the adapter does not support 40ld */
225
226 mraid_ext_inquiry *ext_inq;
227 mraid_inquiry *inq;
228 dma_addr_t dma_handle;
229
230 ext_inq = pci_alloc_consistent(adapter->dev,
231 sizeof(mraid_ext_inquiry), &dma_handle);
232
233 if( ext_inq == NULL ) return -1;
234
235 inq = &ext_inq->raid_inq;
236
237 mbox->m_out.xferaddr = (u32)dma_handle;
238
239 /*issue old 0x04 command to adapter */
240 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
241
242 issue_scb_block(adapter, raw_mbox);
243
244 /*
245 * update Enquiry3 and ProductInfo structures with
246 * mraid_inquiry structure
247 */
248 mega_8_to_40ld(inq, inquiry3,
249 (mega_product_info *)&adapter->product_info);
250
251 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
252 ext_inq, dma_handle);
253
254 } else { /*adapter supports 40ld */
255 adapter->flag |= BOARD_40LD;
256
257 /*
258 * get product_info, which is static information and will be
259 * unchanged
260 */
261 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
262 &adapter->product_info,
263 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
264
265 mbox->m_out.xferaddr = prod_info_dma_handle;
266
267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
269
270 if ((retval = issue_scb_block(adapter, raw_mbox)))
271 printk(KERN_WARNING
272 "megaraid: Product_info cmd failed with error: %d\n",
273 retval);
274
275 pci_unmap_single(adapter->dev, prod_info_dma_handle,
276 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
277 }
278
279
280 /*
281 * kernel scans the channels from 0 to <= max_channel
282 */
283 adapter->host->max_channel =
284 adapter->product_info.nchannels + NVIRT_CHAN -1;
285
286 adapter->host->max_id = 16; /* max targets per channel */
287
288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
289
290 adapter->host->cmd_per_lun = max_cmd_per_lun;
291
292 adapter->numldrv = inquiry3->num_ldrv;
293
294 adapter->max_cmds = adapter->product_info.max_commands;
295
296 if(adapter->max_cmds > MAX_COMMANDS)
297 adapter->max_cmds = MAX_COMMANDS;
298
299 adapter->host->can_queue = adapter->max_cmds - 1;
300
301 /*
302 * Get the maximum number of scatter-gather elements supported by this
303 * firmware
304 */
305 mega_get_max_sgl(adapter);
306
307 adapter->host->sg_tablesize = adapter->sglen;
308
309 /* use HP firmware and bios version encoding
310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted
311 right 8 bits making them zero. This 0 value was hardcoded to fix
312 sparse warnings. */
313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
314 sprintf (adapter->fw_version, "%c%d%d.%d%d",
315 adapter->product_info.fw_version[2],
316 0,
317 adapter->product_info.fw_version[1] & 0x0f,
318 0,
319 adapter->product_info.fw_version[0] & 0x0f);
320 sprintf (adapter->bios_version, "%c%d%d.%d%d",
321 adapter->product_info.bios_version[2],
322 0,
323 adapter->product_info.bios_version[1] & 0x0f,
324 0,
325 adapter->product_info.bios_version[0] & 0x0f);
326 } else {
327 memcpy(adapter->fw_version,
328 (char *)adapter->product_info.fw_version, 4);
329 adapter->fw_version[4] = 0;
330
331 memcpy(adapter->bios_version,
332 (char *)adapter->product_info.bios_version, 4);
333
334 adapter->bios_version[4] = 0;
335 }
336
337 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
338 adapter->fw_version, adapter->bios_version, adapter->numldrv);
339
340 /*
341 * Do we support extended (>10 bytes) cdbs
342 */
343 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
344 if (adapter->support_ext_cdb)
345 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
346
347
348 return 0;
349 }
350
351 /**
352 * mega_runpendq()
353 * @adapter - pointer to our soft state
354 *
355 * Runs through the list of pending requests.
356 */
357 static inline void
358 mega_runpendq(adapter_t *adapter)
359 {
360 if(!list_empty(&adapter->pending_list))
361 __mega_runpendq(adapter);
362 }
363
364 /*
365 * megaraid_queue()
366 * @scmd - Issue this scsi command
367 * @done - the callback hook into the scsi mid-layer
368 *
369 * The command queuing entry point for the mid-layer.
370 */
371 static int
372 megaraid_queue_lck(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
373 {
374 adapter_t *adapter;
375 scb_t *scb;
376 int busy=0;
377 unsigned long flags;
378
379 adapter = (adapter_t *)scmd->device->host->hostdata;
380
381 scmd->scsi_done = done;
382
383
384 /*
385 * Allocate and build a SCB request
386 * busy flag will be set if mega_build_cmd() command could not
387 * allocate scb. We will return non-zero status in that case.
388 * NOTE: scb can be null even though certain commands completed
389 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
390 * return 0 in that case.
391 */
392
393 spin_lock_irqsave(&adapter->lock, flags);
394 scb = mega_build_cmd(adapter, scmd, &busy);
395 if (!scb)
396 goto out;
397
398 scb->state |= SCB_PENDQ;
399 list_add_tail(&scb->list, &adapter->pending_list);
400
401 /*
402 * Check if the HBA is in quiescent state, e.g., during a
403 * delete logical drive opertion. If it is, don't run
404 * the pending_list.
405 */
406 if (atomic_read(&adapter->quiescent) == 0)
407 mega_runpendq(adapter);
408
409 busy = 0;
410 out:
411 spin_unlock_irqrestore(&adapter->lock, flags);
412 return busy;
413 }
414
415 static DEF_SCSI_QCMD(megaraid_queue)
416
417 /**
418 * mega_allocate_scb()
419 * @adapter - pointer to our soft state
420 * @cmd - scsi command from the mid-layer
421 *
422 * Allocate a SCB structure. This is the central structure for controller
423 * commands.
424 */
425 static inline scb_t *
426 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
427 {
428 struct list_head *head = &adapter->free_list;
429 scb_t *scb;
430
431 /* Unlink command from Free List */
432 if( !list_empty(head) ) {
433
434 scb = list_entry(head->next, scb_t, list);
435
436 list_del_init(head->next);
437
438 scb->state = SCB_ACTIVE;
439 scb->cmd = cmd;
440 scb->dma_type = MEGA_DMA_TYPE_NONE;
441
442 return scb;
443 }
444
445 return NULL;
446 }
447
448 /**
449 * mega_get_ldrv_num()
450 * @adapter - pointer to our soft state
451 * @cmd - scsi mid layer command
452 * @channel - channel on the controller
453 *
454 * Calculate the logical drive number based on the information in scsi command
455 * and the channel number.
456 */
457 static inline int
458 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
459 {
460 int tgt;
461 int ldrv_num;
462
463 tgt = cmd->device->id;
464
465 if ( tgt > adapter->this_id )
466 tgt--; /* we do not get inquires for initiator id */
467
468 ldrv_num = (channel * 15) + tgt;
469
470
471 /*
472 * If we have a logical drive with boot enabled, project it first
473 */
474 if( adapter->boot_ldrv_enabled ) {
475 if( ldrv_num == 0 ) {
476 ldrv_num = adapter->boot_ldrv;
477 }
478 else {
479 if( ldrv_num <= adapter->boot_ldrv ) {
480 ldrv_num--;
481 }
482 }
483 }
484
485 /*
486 * If "delete logical drive" feature is enabled on this controller.
487 * Do only if at least one delete logical drive operation was done.
488 *
489 * Also, after logical drive deletion, instead of logical drive number,
490 * the value returned should be 0x80+logical drive id.
491 *
492 * These is valid only for IO commands.
493 */
494
495 if (adapter->support_random_del && adapter->read_ldidmap )
496 switch (cmd->cmnd[0]) {
497 case READ_6: /* fall through */
498 case WRITE_6: /* fall through */
499 case READ_10: /* fall through */
500 case WRITE_10:
501 ldrv_num += 0x80;
502 }
503
504 return ldrv_num;
505 }
506
507 /**
508 * mega_build_cmd()
509 * @adapter - pointer to our soft state
510 * @cmd - Prepare using this scsi command
511 * @busy - busy flag if no resources
512 *
513 * Prepares a command and scatter gather list for the controller. This routine
514 * also finds out if the commands is intended for a logical drive or a
515 * physical device and prepares the controller command accordingly.
516 *
517 * We also re-order the logical drives and physical devices based on their
518 * boot settings.
519 */
520 static scb_t *
521 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
522 {
523 mega_ext_passthru *epthru;
524 mega_passthru *pthru;
525 scb_t *scb;
526 mbox_t *mbox;
527 u32 seg;
528 char islogical;
529 int max_ldrv_num;
530 int channel = 0;
531 int target = 0;
532 int ldrv_num = 0; /* logical drive number */
533
534 /*
535 * We know what channels our logical drives are on - mega_find_card()
536 */
537 islogical = adapter->logdrv_chan[cmd->device->channel];
538
539 /*
540 * The theory: If physical drive is chosen for boot, all the physical
541 * devices are exported before the logical drives, otherwise physical
542 * devices are pushed after logical drives, in which case - Kernel sees
543 * the physical devices on virtual channel which is obviously converted
544 * to actual channel on the HBA.
545 */
546 if( adapter->boot_pdrv_enabled ) {
547 if( islogical ) {
548 /* logical channel */
549 channel = cmd->device->channel -
550 adapter->product_info.nchannels;
551 }
552 else {
553 /* this is physical channel */
554 channel = cmd->device->channel;
555 target = cmd->device->id;
556
557 /*
558 * boot from a physical disk, that disk needs to be
559 * exposed first IF both the channels are SCSI, then
560 * booting from the second channel is not allowed.
561 */
562 if( target == 0 ) {
563 target = adapter->boot_pdrv_tgt;
564 }
565 else if( target == adapter->boot_pdrv_tgt ) {
566 target = 0;
567 }
568 }
569 }
570 else {
571 if( islogical ) {
572 /* this is the logical channel */
573 channel = cmd->device->channel;
574 }
575 else {
576 /* physical channel */
577 channel = cmd->device->channel - NVIRT_CHAN;
578 target = cmd->device->id;
579 }
580 }
581
582
583 if(islogical) {
584
585 /* have just LUN 0 for each target on virtual channels */
586 if (cmd->device->lun) {
587 cmd->result = (DID_BAD_TARGET << 16);
588 cmd->scsi_done(cmd);
589 return NULL;
590 }
591
592 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
593
594
595 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
596 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
597
598 /*
599 * max_ldrv_num increases by 0x80 if some logical drive was
600 * deleted.
601 */
602 if(adapter->read_ldidmap)
603 max_ldrv_num += 0x80;
604
605 if(ldrv_num > max_ldrv_num ) {
606 cmd->result = (DID_BAD_TARGET << 16);
607 cmd->scsi_done(cmd);
608 return NULL;
609 }
610
611 }
612 else {
613 if( cmd->device->lun > 7) {
614 /*
615 * Do not support lun >7 for physically accessed
616 * devices
617 */
618 cmd->result = (DID_BAD_TARGET << 16);
619 cmd->scsi_done(cmd);
620 return NULL;
621 }
622 }
623
624 /*
625 *
626 * Logical drive commands
627 *
628 */
629 if(islogical) {
630 switch (cmd->cmnd[0]) {
631 case TEST_UNIT_READY:
632 #if MEGA_HAVE_CLUSTERING
633 /*
634 * Do we support clustering and is the support enabled
635 * If no, return success always
636 */
637 if( !adapter->has_cluster ) {
638 cmd->result = (DID_OK << 16);
639 cmd->scsi_done(cmd);
640 return NULL;
641 }
642
643 if(!(scb = mega_allocate_scb(adapter, cmd))) {
644 *busy = 1;
645 return NULL;
646 }
647
648 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
649 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
650 scb->raw_mbox[3] = ldrv_num;
651
652 scb->dma_direction = PCI_DMA_NONE;
653
654 return scb;
655 #else
656 cmd->result = (DID_OK << 16);
657 cmd->scsi_done(cmd);
658 return NULL;
659 #endif
660
661 case MODE_SENSE: {
662 char *buf;
663 struct scatterlist *sg;
664
665 sg = scsi_sglist(cmd);
666 buf = kmap_atomic(sg_page(sg)) + sg->offset;
667
668 memset(buf, 0, cmd->cmnd[4]);
669 kunmap_atomic(buf - sg->offset);
670
671 cmd->result = (DID_OK << 16);
672 cmd->scsi_done(cmd);
673 return NULL;
674 }
675
676 case READ_CAPACITY:
677 case INQUIRY:
678
679 if(!(adapter->flag & (1L << cmd->device->channel))) {
680
681 printk(KERN_NOTICE
682 "scsi%d: scanning scsi channel %d ",
683 adapter->host->host_no,
684 cmd->device->channel);
685 printk("for logical drives.\n");
686
687 adapter->flag |= (1L << cmd->device->channel);
688 }
689
690 /* Allocate a SCB and initialize passthru */
691 if(!(scb = mega_allocate_scb(adapter, cmd))) {
692 *busy = 1;
693 return NULL;
694 }
695 pthru = scb->pthru;
696
697 mbox = (mbox_t *)scb->raw_mbox;
698 memset(mbox, 0, sizeof(scb->raw_mbox));
699 memset(pthru, 0, sizeof(mega_passthru));
700
701 pthru->timeout = 0;
702 pthru->ars = 1;
703 pthru->reqsenselen = 14;
704 pthru->islogical = 1;
705 pthru->logdrv = ldrv_num;
706 pthru->cdblen = cmd->cmd_len;
707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
708
709 if( adapter->has_64bit_addr ) {
710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
711 }
712 else {
713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
714 }
715
716 scb->dma_direction = PCI_DMA_FROMDEVICE;
717
718 pthru->numsgelements = mega_build_sglist(adapter, scb,
719 &pthru->dataxferaddr, &pthru->dataxferlen);
720
721 mbox->m_out.xferaddr = scb->pthru_dma_addr;
722
723 return scb;
724
725 case READ_6:
726 case WRITE_6:
727 case READ_10:
728 case WRITE_10:
729 case READ_12:
730 case WRITE_12:
731
732 /* Allocate a SCB and initialize mailbox */
733 if(!(scb = mega_allocate_scb(adapter, cmd))) {
734 *busy = 1;
735 return NULL;
736 }
737 mbox = (mbox_t *)scb->raw_mbox;
738
739 memset(mbox, 0, sizeof(scb->raw_mbox));
740 mbox->m_out.logdrv = ldrv_num;
741
742 /*
743 * A little hack: 2nd bit is zero for all scsi read
744 * commands and is set for all scsi write commands
745 */
746 if( adapter->has_64bit_addr ) {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE64:
749 MEGA_MBOXCMD_LREAD64 ;
750 }
751 else {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE:
754 MEGA_MBOXCMD_LREAD ;
755 }
756
757 /*
758 * 6-byte READ(0x08) or WRITE(0x0A) cdb
759 */
760 if( cmd->cmd_len == 6 ) {
761 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
762 mbox->m_out.lba =
763 ((u32)cmd->cmnd[1] << 16) |
764 ((u32)cmd->cmnd[2] << 8) |
765 (u32)cmd->cmnd[3];
766
767 mbox->m_out.lba &= 0x1FFFFF;
768
769 #if MEGA_HAVE_STATS
770 /*
771 * Take modulo 0x80, since the logical drive
772 * number increases by 0x80 when a logical
773 * drive was deleted
774 */
775 if (*cmd->cmnd == READ_6) {
776 adapter->nreads[ldrv_num%0x80]++;
777 adapter->nreadblocks[ldrv_num%0x80] +=
778 mbox->m_out.numsectors;
779 } else {
780 adapter->nwrites[ldrv_num%0x80]++;
781 adapter->nwriteblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 }
784 #endif
785 }
786
787 /*
788 * 10-byte READ(0x28) or WRITE(0x2A) cdb
789 */
790 if( cmd->cmd_len == 10 ) {
791 mbox->m_out.numsectors =
792 (u32)cmd->cmnd[8] |
793 ((u32)cmd->cmnd[7] << 8);
794 mbox->m_out.lba =
795 ((u32)cmd->cmnd[2] << 24) |
796 ((u32)cmd->cmnd[3] << 16) |
797 ((u32)cmd->cmnd[4] << 8) |
798 (u32)cmd->cmnd[5];
799
800 #if MEGA_HAVE_STATS
801 if (*cmd->cmnd == READ_10) {
802 adapter->nreads[ldrv_num%0x80]++;
803 adapter->nreadblocks[ldrv_num%0x80] +=
804 mbox->m_out.numsectors;
805 } else {
806 adapter->nwrites[ldrv_num%0x80]++;
807 adapter->nwriteblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 }
810 #endif
811 }
812
813 /*
814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
815 */
816 if( cmd->cmd_len == 12 ) {
817 mbox->m_out.lba =
818 ((u32)cmd->cmnd[2] << 24) |
819 ((u32)cmd->cmnd[3] << 16) |
820 ((u32)cmd->cmnd[4] << 8) |
821 (u32)cmd->cmnd[5];
822
823 mbox->m_out.numsectors =
824 ((u32)cmd->cmnd[6] << 24) |
825 ((u32)cmd->cmnd[7] << 16) |
826 ((u32)cmd->cmnd[8] << 8) |
827 (u32)cmd->cmnd[9];
828
829 #if MEGA_HAVE_STATS
830 if (*cmd->cmnd == READ_12) {
831 adapter->nreads[ldrv_num%0x80]++;
832 adapter->nreadblocks[ldrv_num%0x80] +=
833 mbox->m_out.numsectors;
834 } else {
835 adapter->nwrites[ldrv_num%0x80]++;
836 adapter->nwriteblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 }
839 #endif
840 }
841
842 /*
843 * If it is a read command
844 */
845 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
846 scb->dma_direction = PCI_DMA_FROMDEVICE;
847 }
848 else {
849 scb->dma_direction = PCI_DMA_TODEVICE;
850 }
851
852 /* Calculate Scatter-Gather info */
853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
854 (u32 *)&mbox->m_out.xferaddr, &seg);
855
856 return scb;
857
858 #if MEGA_HAVE_CLUSTERING
859 case RESERVE: /* Fall through */
860 case RELEASE:
861
862 /*
863 * Do we support clustering and is the support enabled
864 */
865 if( ! adapter->has_cluster ) {
866
867 cmd->result = (DID_BAD_TARGET << 16);
868 cmd->scsi_done(cmd);
869 return NULL;
870 }
871
872 /* Allocate a SCB and initialize mailbox */
873 if(!(scb = mega_allocate_scb(adapter, cmd))) {
874 *busy = 1;
875 return NULL;
876 }
877
878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
880 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
881
882 scb->raw_mbox[3] = ldrv_num;
883
884 scb->dma_direction = PCI_DMA_NONE;
885
886 return scb;
887 #endif
888
889 default:
890 cmd->result = (DID_BAD_TARGET << 16);
891 cmd->scsi_done(cmd);
892 return NULL;
893 }
894 }
895
896 /*
897 * Passthru drive commands
898 */
899 else {
900 /* Allocate a SCB and initialize passthru */
901 if(!(scb = mega_allocate_scb(adapter, cmd))) {
902 *busy = 1;
903 return NULL;
904 }
905
906 mbox = (mbox_t *)scb->raw_mbox;
907 memset(mbox, 0, sizeof(scb->raw_mbox));
908
909 if( adapter->support_ext_cdb ) {
910
911 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
912 channel, target);
913
914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
915
916 mbox->m_out.xferaddr = scb->epthru_dma_addr;
917
918 }
919 else {
920
921 pthru = mega_prepare_passthru(adapter, scb, cmd,
922 channel, target);
923
924 /* Initialize mailbox */
925 if( adapter->has_64bit_addr ) {
926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
927 }
928 else {
929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
930 }
931
932 mbox->m_out.xferaddr = scb->pthru_dma_addr;
933
934 }
935 return scb;
936 }
937 return NULL;
938 }
939
940
941 /**
942 * mega_prepare_passthru()
943 * @adapter - pointer to our soft state
944 * @scb - our scsi control block
945 * @cmd - scsi command from the mid-layer
946 * @channel - actual channel on the controller
947 * @target - actual id on the controller.
948 *
949 * prepare a command for the scsi physical devices.
950 */
951 static mega_passthru *
952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
953 int channel, int target)
954 {
955 mega_passthru *pthru;
956
957 pthru = scb->pthru;
958 memset(pthru, 0, sizeof (mega_passthru));
959
960 /* 0=6sec/1=60sec/2=10min/3=3hrs */
961 pthru->timeout = 2;
962
963 pthru->ars = 1;
964 pthru->reqsenselen = 14;
965 pthru->islogical = 0;
966
967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
968
969 pthru->target = (adapter->flag & BOARD_40LD) ?
970 (channel << 4) | target : target;
971
972 pthru->cdblen = cmd->cmd_len;
973 pthru->logdrv = cmd->device->lun;
974
975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
976
977 /* Not sure about the direction */
978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
979
980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
981 switch (cmd->cmnd[0]) {
982 case INQUIRY:
983 case READ_CAPACITY:
984 if(!(adapter->flag & (1L << cmd->device->channel))) {
985
986 printk(KERN_NOTICE
987 "scsi%d: scanning scsi channel %d [P%d] ",
988 adapter->host->host_no,
989 cmd->device->channel, channel);
990 printk("for physical devices.\n");
991
992 adapter->flag |= (1L << cmd->device->channel);
993 }
994 /* Fall through */
995 default:
996 pthru->numsgelements = mega_build_sglist(adapter, scb,
997 &pthru->dataxferaddr, &pthru->dataxferlen);
998 break;
999 }
1000 return pthru;
1001 }
1002
1003
1004 /**
1005 * mega_prepare_extpassthru()
1006 * @adapter - pointer to our soft state
1007 * @scb - our scsi control block
1008 * @cmd - scsi command from the mid-layer
1009 * @channel - actual channel on the controller
1010 * @target - actual id on the controller.
1011 *
1012 * prepare a command for the scsi physical devices. This rountine prepares
1013 * commands for devices which can take extended CDBs (>10 bytes)
1014 */
1015 static mega_ext_passthru *
1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1017 int channel, int target)
1018 {
1019 mega_ext_passthru *epthru;
1020
1021 epthru = scb->epthru;
1022 memset(epthru, 0, sizeof(mega_ext_passthru));
1023
1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1025 epthru->timeout = 2;
1026
1027 epthru->ars = 1;
1028 epthru->reqsenselen = 14;
1029 epthru->islogical = 0;
1030
1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1032 epthru->target = (adapter->flag & BOARD_40LD) ?
1033 (channel << 4) | target : target;
1034
1035 epthru->cdblen = cmd->cmd_len;
1036 epthru->logdrv = cmd->device->lun;
1037
1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1039
1040 /* Not sure about the direction */
1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1042
1043 switch(cmd->cmnd[0]) {
1044 case INQUIRY:
1045 case READ_CAPACITY:
1046 if(!(adapter->flag & (1L << cmd->device->channel))) {
1047
1048 printk(KERN_NOTICE
1049 "scsi%d: scanning scsi channel %d [P%d] ",
1050 adapter->host->host_no,
1051 cmd->device->channel, channel);
1052 printk("for physical devices.\n");
1053
1054 adapter->flag |= (1L << cmd->device->channel);
1055 }
1056 /* Fall through */
1057 default:
1058 epthru->numsgelements = mega_build_sglist(adapter, scb,
1059 &epthru->dataxferaddr, &epthru->dataxferlen);
1060 break;
1061 }
1062
1063 return epthru;
1064 }
1065
1066 static void
1067 __mega_runpendq(adapter_t *adapter)
1068 {
1069 scb_t *scb;
1070 struct list_head *pos, *next;
1071
1072 /* Issue any pending commands to the card */
1073 list_for_each_safe(pos, next, &adapter->pending_list) {
1074
1075 scb = list_entry(pos, scb_t, list);
1076
1077 if( !(scb->state & SCB_ISSUED) ) {
1078
1079 if( issue_scb(adapter, scb) != 0 )
1080 return;
1081 }
1082 }
1083
1084 return;
1085 }
1086
1087
1088 /**
1089 * issue_scb()
1090 * @adapter - pointer to our soft state
1091 * @scb - scsi control block
1092 *
1093 * Post a command to the card if the mailbox is available, otherwise return
1094 * busy. We also take the scb from the pending list if the mailbox is
1095 * available.
1096 */
1097 static int
1098 issue_scb(adapter_t *adapter, scb_t *scb)
1099 {
1100 volatile mbox64_t *mbox64 = adapter->mbox64;
1101 volatile mbox_t *mbox = adapter->mbox;
1102 unsigned int i = 0;
1103
1104 if(unlikely(mbox->m_in.busy)) {
1105 do {
1106 udelay(1);
1107 i++;
1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1109
1110 if(mbox->m_in.busy) return -1;
1111 }
1112
1113 /* Copy mailbox data into host structure */
1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1115 sizeof(struct mbox_out));
1116
1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1118 mbox->m_in.busy = 1; /* Set busy */
1119
1120
1121 /*
1122 * Increment the pending queue counter
1123 */
1124 atomic_inc(&adapter->pend_cmds);
1125
1126 switch (mbox->m_out.cmd) {
1127 case MEGA_MBOXCMD_LREAD64:
1128 case MEGA_MBOXCMD_LWRITE64:
1129 case MEGA_MBOXCMD_PASSTHRU64:
1130 case MEGA_MBOXCMD_EXTPTHRU:
1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1132 mbox64->xfer_segment_hi = 0;
1133 mbox->m_out.xferaddr = 0xFFFFFFFF;
1134 break;
1135 default:
1136 mbox64->xfer_segment_lo = 0;
1137 mbox64->xfer_segment_hi = 0;
1138 }
1139
1140 /*
1141 * post the command
1142 */
1143 scb->state |= SCB_ISSUED;
1144
1145 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1146 mbox->m_in.poll = 0;
1147 mbox->m_in.ack = 0;
1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1149 }
1150 else {
1151 irq_enable(adapter);
1152 issue_command(adapter);
1153 }
1154
1155 return 0;
1156 }
1157
1158 /*
1159 * Wait until the controller's mailbox is available
1160 */
1161 static inline int
1162 mega_busywait_mbox (adapter_t *adapter)
1163 {
1164 if (adapter->mbox->m_in.busy)
1165 return __mega_busywait_mbox(adapter);
1166 return 0;
1167 }
1168
1169 /**
1170 * issue_scb_block()
1171 * @adapter - pointer to our soft state
1172 * @raw_mbox - the mailbox
1173 *
1174 * Issue a scb in synchronous and non-interrupt mode
1175 */
1176 static int
1177 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1178 {
1179 volatile mbox64_t *mbox64 = adapter->mbox64;
1180 volatile mbox_t *mbox = adapter->mbox;
1181 u8 byte;
1182
1183 /* Wait until mailbox is free */
1184 if(mega_busywait_mbox (adapter))
1185 goto bug_blocked_mailbox;
1186
1187 /* Copy mailbox data into host structure */
1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1189 mbox->m_out.cmdid = 0xFE;
1190 mbox->m_in.busy = 1;
1191
1192 switch (raw_mbox[0]) {
1193 case MEGA_MBOXCMD_LREAD64:
1194 case MEGA_MBOXCMD_LWRITE64:
1195 case MEGA_MBOXCMD_PASSTHRU64:
1196 case MEGA_MBOXCMD_EXTPTHRU:
1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1198 mbox64->xfer_segment_hi = 0;
1199 mbox->m_out.xferaddr = 0xFFFFFFFF;
1200 break;
1201 default:
1202 mbox64->xfer_segment_lo = 0;
1203 mbox64->xfer_segment_hi = 0;
1204 }
1205
1206 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1207 mbox->m_in.poll = 0;
1208 mbox->m_in.ack = 0;
1209 mbox->m_in.numstatus = 0xFF;
1210 mbox->m_in.status = 0xFF;
1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1212
1213 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1214 cpu_relax();
1215
1216 mbox->m_in.numstatus = 0xFF;
1217
1218 while( (volatile u8)mbox->m_in.poll != 0x77 )
1219 cpu_relax();
1220
1221 mbox->m_in.poll = 0;
1222 mbox->m_in.ack = 0x77;
1223
1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1225
1226 while(RDINDOOR(adapter) & 0x2)
1227 cpu_relax();
1228 }
1229 else {
1230 irq_disable(adapter);
1231 issue_command(adapter);
1232
1233 while (!((byte = irq_state(adapter)) & INTR_VALID))
1234 cpu_relax();
1235
1236 set_irq_state(adapter, byte);
1237 irq_enable(adapter);
1238 irq_ack(adapter);
1239 }
1240
1241 return mbox->m_in.status;
1242
1243 bug_blocked_mailbox:
1244 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1245 udelay (1000);
1246 return -1;
1247 }
1248
1249
1250 /**
1251 * megaraid_isr_iomapped()
1252 * @irq - irq
1253 * @devp - pointer to our soft state
1254 *
1255 * Interrupt service routine for io-mapped controllers.
1256 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1257 * and service the completed commands.
1258 */
1259 static irqreturn_t
1260 megaraid_isr_iomapped(int irq, void *devp)
1261 {
1262 adapter_t *adapter = devp;
1263 unsigned long flags;
1264 u8 status;
1265 u8 nstatus;
1266 u8 completed[MAX_FIRMWARE_STATUS];
1267 u8 byte;
1268 int handled = 0;
1269
1270
1271 /*
1272 * loop till F/W has more commands for us to complete.
1273 */
1274 spin_lock_irqsave(&adapter->lock, flags);
1275
1276 do {
1277 /* Check if a valid interrupt is pending */
1278 byte = irq_state(adapter);
1279 if( (byte & VALID_INTR_BYTE) == 0 ) {
1280 /*
1281 * No more pending commands
1282 */
1283 goto out_unlock;
1284 }
1285 set_irq_state(adapter, byte);
1286
1287 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1288 == 0xFF)
1289 cpu_relax();
1290 adapter->mbox->m_in.numstatus = 0xFF;
1291
1292 status = adapter->mbox->m_in.status;
1293
1294 /*
1295 * decrement the pending queue counter
1296 */
1297 atomic_sub(nstatus, &adapter->pend_cmds);
1298
1299 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1300 nstatus);
1301
1302 /* Acknowledge interrupt */
1303 irq_ack(adapter);
1304
1305 mega_cmd_done(adapter, completed, nstatus, status);
1306
1307 mega_rundoneq(adapter);
1308
1309 handled = 1;
1310
1311 /* Loop through any pending requests */
1312 if(atomic_read(&adapter->quiescent) == 0) {
1313 mega_runpendq(adapter);
1314 }
1315
1316 } while(1);
1317
1318 out_unlock:
1319
1320 spin_unlock_irqrestore(&adapter->lock, flags);
1321
1322 return IRQ_RETVAL(handled);
1323 }
1324
1325
1326 /**
1327 * megaraid_isr_memmapped()
1328 * @irq - irq
1329 * @devp - pointer to our soft state
1330 *
1331 * Interrupt service routine for memory-mapped controllers.
1332 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1333 * and service the completed commands.
1334 */
1335 static irqreturn_t
1336 megaraid_isr_memmapped(int irq, void *devp)
1337 {
1338 adapter_t *adapter = devp;
1339 unsigned long flags;
1340 u8 status;
1341 u32 dword = 0;
1342 u8 nstatus;
1343 u8 completed[MAX_FIRMWARE_STATUS];
1344 int handled = 0;
1345
1346
1347 /*
1348 * loop till F/W has more commands for us to complete.
1349 */
1350 spin_lock_irqsave(&adapter->lock, flags);
1351
1352 do {
1353 /* Check if a valid interrupt is pending */
1354 dword = RDOUTDOOR(adapter);
1355 if(dword != 0x10001234) {
1356 /*
1357 * No more pending commands
1358 */
1359 goto out_unlock;
1360 }
1361 WROUTDOOR(adapter, 0x10001234);
1362
1363 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1364 == 0xFF) {
1365 cpu_relax();
1366 }
1367 adapter->mbox->m_in.numstatus = 0xFF;
1368
1369 status = adapter->mbox->m_in.status;
1370
1371 /*
1372 * decrement the pending queue counter
1373 */
1374 atomic_sub(nstatus, &adapter->pend_cmds);
1375
1376 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1377 nstatus);
1378
1379 /* Acknowledge interrupt */
1380 WRINDOOR(adapter, 0x2);
1381
1382 handled = 1;
1383
1384 while( RDINDOOR(adapter) & 0x02 )
1385 cpu_relax();
1386
1387 mega_cmd_done(adapter, completed, nstatus, status);
1388
1389 mega_rundoneq(adapter);
1390
1391 /* Loop through any pending requests */
1392 if(atomic_read(&adapter->quiescent) == 0) {
1393 mega_runpendq(adapter);
1394 }
1395
1396 } while(1);
1397
1398 out_unlock:
1399
1400 spin_unlock_irqrestore(&adapter->lock, flags);
1401
1402 return IRQ_RETVAL(handled);
1403 }
1404 /**
1405 * mega_cmd_done()
1406 * @adapter - pointer to our soft state
1407 * @completed - array of ids of completed commands
1408 * @nstatus - number of completed commands
1409 * @status - status of the last command completed
1410 *
1411 * Complete the commands and call the scsi mid-layer callback hooks.
1412 */
1413 static void
1414 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1415 {
1416 mega_ext_passthru *epthru = NULL;
1417 struct scatterlist *sgl;
1418 Scsi_Cmnd *cmd = NULL;
1419 mega_passthru *pthru = NULL;
1420 mbox_t *mbox = NULL;
1421 u8 c;
1422 scb_t *scb;
1423 int islogical;
1424 int cmdid;
1425 int i;
1426
1427 /*
1428 * for all the commands completed, call the mid-layer callback routine
1429 * and free the scb.
1430 */
1431 for( i = 0; i < nstatus; i++ ) {
1432
1433 cmdid = completed[i];
1434
1435 /*
1436 * Only free SCBs for the commands coming down from the
1437 * mid-layer, not for which were issued internally
1438 *
1439 * For internal command, restore the status returned by the
1440 * firmware so that user can interpret it.
1441 */
1442 if (cmdid == CMDID_INT_CMDS) {
1443 scb = &adapter->int_scb;
1444
1445 list_del_init(&scb->list);
1446 scb->state = SCB_FREE;
1447
1448 adapter->int_status = status;
1449 complete(&adapter->int_waitq);
1450 } else {
1451 scb = &adapter->scb_list[cmdid];
1452
1453 /*
1454 * Make sure f/w has completed a valid command
1455 */
1456 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1457 printk(KERN_CRIT
1458 "megaraid: invalid command ");
1459 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1460 cmdid, scb->state, scb->cmd);
1461
1462 continue;
1463 }
1464
1465 /*
1466 * Was a abort issued for this command
1467 */
1468 if( scb->state & SCB_ABORT ) {
1469
1470 printk(KERN_WARNING
1471 "megaraid: aborted cmd [%x] complete.\n",
1472 scb->idx);
1473
1474 scb->cmd->result = (DID_ABORT << 16);
1475
1476 list_add_tail(SCSI_LIST(scb->cmd),
1477 &adapter->completed_list);
1478
1479 mega_free_scb(adapter, scb);
1480
1481 continue;
1482 }
1483
1484 /*
1485 * Was a reset issued for this command
1486 */
1487 if( scb->state & SCB_RESET ) {
1488
1489 printk(KERN_WARNING
1490 "megaraid: reset cmd [%x] complete.\n",
1491 scb->idx);
1492
1493 scb->cmd->result = (DID_RESET << 16);
1494
1495 list_add_tail(SCSI_LIST(scb->cmd),
1496 &adapter->completed_list);
1497
1498 mega_free_scb (adapter, scb);
1499
1500 continue;
1501 }
1502
1503 cmd = scb->cmd;
1504 pthru = scb->pthru;
1505 epthru = scb->epthru;
1506 mbox = (mbox_t *)scb->raw_mbox;
1507
1508 #if MEGA_HAVE_STATS
1509 {
1510
1511 int logdrv = mbox->m_out.logdrv;
1512
1513 islogical = adapter->logdrv_chan[cmd->channel];
1514 /*
1515 * Maintain an error counter for the logical drive.
1516 * Some application like SNMP agent need such
1517 * statistics
1518 */
1519 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1520 cmd->cmnd[0] == READ_10 ||
1521 cmd->cmnd[0] == READ_12)) {
1522 /*
1523 * Logical drive number increases by 0x80 when
1524 * a logical drive is deleted
1525 */
1526 adapter->rd_errors[logdrv%0x80]++;
1527 }
1528
1529 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1530 cmd->cmnd[0] == WRITE_10 ||
1531 cmd->cmnd[0] == WRITE_12)) {
1532 /*
1533 * Logical drive number increases by 0x80 when
1534 * a logical drive is deleted
1535 */
1536 adapter->wr_errors[logdrv%0x80]++;
1537 }
1538
1539 }
1540 #endif
1541 }
1542
1543 /*
1544 * Do not return the presence of hard disk on the channel so,
1545 * inquiry sent, and returned data==hard disk or removable
1546 * hard disk and not logical, request should return failure! -
1547 * PJ
1548 */
1549 islogical = adapter->logdrv_chan[cmd->device->channel];
1550 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1551
1552 sgl = scsi_sglist(cmd);
1553 if( sg_page(sgl) ) {
1554 c = *(unsigned char *) sg_virt(&sgl[0]);
1555 } else {
1556 printk(KERN_WARNING
1557 "megaraid: invalid sg.\n");
1558 c = 0;
1559 }
1560
1561 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1562 ((c & 0x1F ) == TYPE_DISK)) {
1563 status = 0xF0;
1564 }
1565 }
1566
1567 /* clear result; otherwise, success returns corrupt value */
1568 cmd->result = 0;
1569
1570 /* Convert MegaRAID status to Linux error code */
1571 switch (status) {
1572 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1573 cmd->result |= (DID_OK << 16);
1574 break;
1575
1576 case 0x02: /* ERROR_ABORTED, i.e.
1577 SCSI_STATUS_CHECK_CONDITION */
1578
1579 /* set sense_buffer and result fields */
1580 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1581 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1582
1583 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1584 14);
1585
1586 cmd->result = (DRIVER_SENSE << 24) |
1587 (DID_OK << 16) |
1588 (CHECK_CONDITION << 1);
1589 }
1590 else {
1591 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1592
1593 memcpy(cmd->sense_buffer,
1594 epthru->reqsensearea, 14);
1595
1596 cmd->result = (DRIVER_SENSE << 24) |
1597 (DID_OK << 16) |
1598 (CHECK_CONDITION << 1);
1599 } else {
1600 cmd->sense_buffer[0] = 0x70;
1601 cmd->sense_buffer[2] = ABORTED_COMMAND;
1602 cmd->result |= (CHECK_CONDITION << 1);
1603 }
1604 }
1605 break;
1606
1607 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1608 SCSI_STATUS_BUSY */
1609 cmd->result |= (DID_BUS_BUSY << 16) | status;
1610 break;
1611
1612 default:
1613 #if MEGA_HAVE_CLUSTERING
1614 /*
1615 * If TEST_UNIT_READY fails, we know
1616 * MEGA_RESERVATION_STATUS failed
1617 */
1618 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1619 cmd->result |= (DID_ERROR << 16) |
1620 (RESERVATION_CONFLICT << 1);
1621 }
1622 else
1623 /*
1624 * Error code returned is 1 if Reserve or Release
1625 * failed or the input parameter is invalid
1626 */
1627 if( status == 1 &&
1628 (cmd->cmnd[0] == RESERVE ||
1629 cmd->cmnd[0] == RELEASE) ) {
1630
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635 #endif
1636 cmd->result |= (DID_BAD_TARGET << 16)|status;
1637 }
1638
1639 mega_free_scb(adapter, scb);
1640
1641 /* Add Scsi_Command to end of completed queue */
1642 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1643 }
1644 }
1645
1646
1647 /*
1648 * mega_runpendq()
1649 *
1650 * Run through the list of completed requests and finish it
1651 */
1652 static void
1653 mega_rundoneq (adapter_t *adapter)
1654 {
1655 Scsi_Cmnd *cmd;
1656 struct list_head *pos;
1657
1658 list_for_each(pos, &adapter->completed_list) {
1659
1660 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1661
1662 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1663 cmd->scsi_done(cmd);
1664 }
1665
1666 INIT_LIST_HEAD(&adapter->completed_list);
1667 }
1668
1669
1670 /*
1671 * Free a SCB structure
1672 * Note: We assume the scsi commands associated with this scb is not free yet.
1673 */
1674 static void
1675 mega_free_scb(adapter_t *adapter, scb_t *scb)
1676 {
1677 switch( scb->dma_type ) {
1678
1679 case MEGA_DMA_TYPE_NONE:
1680 break;
1681
1682 case MEGA_SGLIST:
1683 scsi_dma_unmap(scb->cmd);
1684 break;
1685 default:
1686 break;
1687 }
1688
1689 /*
1690 * Remove from the pending list
1691 */
1692 list_del_init(&scb->list);
1693
1694 /* Link the scb back into free list */
1695 scb->state = SCB_FREE;
1696 scb->cmd = NULL;
1697
1698 list_add(&scb->list, &adapter->free_list);
1699 }
1700
1701
1702 static int
1703 __mega_busywait_mbox (adapter_t *adapter)
1704 {
1705 volatile mbox_t *mbox = adapter->mbox;
1706 long counter;
1707
1708 for (counter = 0; counter < 10000; counter++) {
1709 if (!mbox->m_in.busy)
1710 return 0;
1711 udelay(100);
1712 cond_resched();
1713 }
1714 return -1; /* give up after 1 second */
1715 }
1716
1717 /*
1718 * Copies data to SGLIST
1719 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1720 */
1721 static int
1722 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1723 {
1724 struct scatterlist *sg;
1725 Scsi_Cmnd *cmd;
1726 int sgcnt;
1727 int idx;
1728
1729 cmd = scb->cmd;
1730
1731 /*
1732 * Copy Scatter-Gather list info into controller structure.
1733 *
1734 * The number of sg elements returned must not exceed our limit
1735 */
1736 sgcnt = scsi_dma_map(cmd);
1737
1738 scb->dma_type = MEGA_SGLIST;
1739
1740 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1741
1742 *len = 0;
1743
1744 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1745 sg = scsi_sglist(cmd);
1746 scb->dma_h_bulkdata = sg_dma_address(sg);
1747 *buf = (u32)scb->dma_h_bulkdata;
1748 *len = sg_dma_len(sg);
1749 return 0;
1750 }
1751
1752 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1753 if (adapter->has_64bit_addr) {
1754 scb->sgl64[idx].address = sg_dma_address(sg);
1755 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1756 } else {
1757 scb->sgl[idx].address = sg_dma_address(sg);
1758 *len += scb->sgl[idx].length = sg_dma_len(sg);
1759 }
1760 }
1761
1762 /* Reset pointer and length fields */
1763 *buf = scb->sgl_dma_addr;
1764
1765 /* Return count of SG requests */
1766 return sgcnt;
1767 }
1768
1769
1770 /*
1771 * mega_8_to_40ld()
1772 *
1773 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1774 * Enquiry3 structures for later use
1775 */
1776 static void
1777 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1778 mega_product_info *product_info)
1779 {
1780 int i;
1781
1782 product_info->max_commands = inquiry->adapter_info.max_commands;
1783 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1784 product_info->nchannels = inquiry->adapter_info.nchannels;
1785
1786 for (i = 0; i < 4; i++) {
1787 product_info->fw_version[i] =
1788 inquiry->adapter_info.fw_version[i];
1789
1790 product_info->bios_version[i] =
1791 inquiry->adapter_info.bios_version[i];
1792 }
1793 enquiry3->cache_flush_interval =
1794 inquiry->adapter_info.cache_flush_interval;
1795
1796 product_info->dram_size = inquiry->adapter_info.dram_size;
1797
1798 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1799
1800 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1801 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1802 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1803 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1804 }
1805
1806 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1807 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1808 }
1809
1810 static inline void
1811 mega_free_sgl(adapter_t *adapter)
1812 {
1813 scb_t *scb;
1814 int i;
1815
1816 for(i = 0; i < adapter->max_cmds; i++) {
1817
1818 scb = &adapter->scb_list[i];
1819
1820 if( scb->sgl64 ) {
1821 pci_free_consistent(adapter->dev,
1822 sizeof(mega_sgl64) * adapter->sglen,
1823 scb->sgl64,
1824 scb->sgl_dma_addr);
1825
1826 scb->sgl64 = NULL;
1827 }
1828
1829 if( scb->pthru ) {
1830 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1831 scb->pthru, scb->pthru_dma_addr);
1832
1833 scb->pthru = NULL;
1834 }
1835
1836 if( scb->epthru ) {
1837 pci_free_consistent(adapter->dev,
1838 sizeof(mega_ext_passthru),
1839 scb->epthru, scb->epthru_dma_addr);
1840
1841 scb->epthru = NULL;
1842 }
1843
1844 }
1845 }
1846
1847
1848 /*
1849 * Get information about the card/driver
1850 */
1851 const char *
1852 megaraid_info(struct Scsi_Host *host)
1853 {
1854 static char buffer[512];
1855 adapter_t *adapter;
1856
1857 adapter = (adapter_t *)host->hostdata;
1858
1859 sprintf (buffer,
1860 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1861 adapter->fw_version, adapter->product_info.max_commands,
1862 adapter->host->max_id, adapter->host->max_channel,
1863 (u32)adapter->host->max_lun);
1864 return buffer;
1865 }
1866
1867 /*
1868 * Abort a previous SCSI request. Only commands on the pending list can be
1869 * aborted. All the commands issued to the F/W must complete.
1870 */
1871 static int
1872 megaraid_abort(Scsi_Cmnd *cmd)
1873 {
1874 adapter_t *adapter;
1875 int rval;
1876
1877 adapter = (adapter_t *)cmd->device->host->hostdata;
1878
1879 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1880
1881 /*
1882 * This is required here to complete any completed requests
1883 * to be communicated over to the mid layer.
1884 */
1885 mega_rundoneq(adapter);
1886
1887 return rval;
1888 }
1889
1890
1891 static int
1892 megaraid_reset(struct scsi_cmnd *cmd)
1893 {
1894 adapter_t *adapter;
1895 megacmd_t mc;
1896 int rval;
1897
1898 adapter = (adapter_t *)cmd->device->host->hostdata;
1899
1900 #if MEGA_HAVE_CLUSTERING
1901 mc.cmd = MEGA_CLUSTER_CMD;
1902 mc.opcode = MEGA_RESET_RESERVATIONS;
1903
1904 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1905 printk(KERN_WARNING
1906 "megaraid: reservation reset failed.\n");
1907 }
1908 else {
1909 printk(KERN_INFO "megaraid: reservation reset.\n");
1910 }
1911 #endif
1912
1913 spin_lock_irq(&adapter->lock);
1914
1915 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1916
1917 /*
1918 * This is required here to complete any completed requests
1919 * to be communicated over to the mid layer.
1920 */
1921 mega_rundoneq(adapter);
1922 spin_unlock_irq(&adapter->lock);
1923
1924 return rval;
1925 }
1926
1927 /**
1928 * megaraid_abort_and_reset()
1929 * @adapter - megaraid soft state
1930 * @cmd - scsi command to be aborted or reset
1931 * @aor - abort or reset flag
1932 *
1933 * Try to locate the scsi command in the pending queue. If found and is not
1934 * issued to the controller, abort/reset it. Otherwise return failure
1935 */
1936 static int
1937 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1938 {
1939 struct list_head *pos, *next;
1940 scb_t *scb;
1941
1942 printk(KERN_WARNING "megaraid: %s cmd=%x <c=%d t=%d l=%d>\n",
1943 (aor == SCB_ABORT)? "ABORTING":"RESET",
1944 cmd->cmnd[0], cmd->device->channel,
1945 cmd->device->id, (u32)cmd->device->lun);
1946
1947 if(list_empty(&adapter->pending_list))
1948 return FAILED;
1949
1950 list_for_each_safe(pos, next, &adapter->pending_list) {
1951
1952 scb = list_entry(pos, scb_t, list);
1953
1954 if (scb->cmd == cmd) { /* Found command */
1955
1956 scb->state |= aor;
1957
1958 /*
1959 * Check if this command has firmware ownership. If
1960 * yes, we cannot reset this command. Whenever f/w
1961 * completes this command, we will return appropriate
1962 * status from ISR.
1963 */
1964 if( scb->state & SCB_ISSUED ) {
1965
1966 printk(KERN_WARNING
1967 "megaraid: %s[%x], fw owner.\n",
1968 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1969 scb->idx);
1970
1971 return FAILED;
1972 }
1973 else {
1974
1975 /*
1976 * Not yet issued! Remove from the pending
1977 * list
1978 */
1979 printk(KERN_WARNING
1980 "megaraid: %s-[%x], driver owner.\n",
1981 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1982 scb->idx);
1983
1984 mega_free_scb(adapter, scb);
1985
1986 if( aor == SCB_ABORT ) {
1987 cmd->result = (DID_ABORT << 16);
1988 }
1989 else {
1990 cmd->result = (DID_RESET << 16);
1991 }
1992
1993 list_add_tail(SCSI_LIST(cmd),
1994 &adapter->completed_list);
1995
1996 return SUCCESS;
1997 }
1998 }
1999 }
2000
2001 return FAILED;
2002 }
2003
2004 static inline int
2005 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2006 {
2007 *pdev = pci_alloc_dev(NULL);
2008
2009 if( *pdev == NULL ) return -1;
2010
2011 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2012
2013 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2014 kfree(*pdev);
2015 return -1;
2016 }
2017
2018 return 0;
2019 }
2020
2021 static inline void
2022 free_local_pdev(struct pci_dev *pdev)
2023 {
2024 kfree(pdev);
2025 }
2026
2027 /**
2028 * mega_allocate_inquiry()
2029 * @dma_handle - handle returned for dma address
2030 * @pdev - handle to pci device
2031 *
2032 * allocates memory for inquiry structure
2033 */
2034 static inline void *
2035 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2036 {
2037 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2038 }
2039
2040
2041 static inline void
2042 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2043 {
2044 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2045 }
2046
2047
2048 #ifdef CONFIG_PROC_FS
2049 /* Following code handles /proc fs */
2050
2051 /**
2052 * proc_show_config()
2053 * @m - Synthetic file construction data
2054 * @v - File iterator
2055 *
2056 * Display configuration information about the controller.
2057 */
2058 static int
2059 proc_show_config(struct seq_file *m, void *v)
2060 {
2061
2062 adapter_t *adapter = m->private;
2063
2064 seq_puts(m, MEGARAID_VERSION);
2065 if(adapter->product_info.product_name[0])
2066 seq_printf(m, "%s\n", adapter->product_info.product_name);
2067
2068 seq_puts(m, "Controller Type: ");
2069
2070 if( adapter->flag & BOARD_MEMMAP )
2071 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2072 else
2073 seq_puts(m, "418/428/434\n");
2074
2075 if(adapter->flag & BOARD_40LD)
2076 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2077
2078 if(adapter->flag & BOARD_64BIT)
2079 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2080 if( adapter->has_64bit_addr )
2081 seq_puts(m, "Controller using 64-bit memory addressing\n");
2082 else
2083 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2084
2085 seq_printf(m, "Base = %08lx, Irq = %d, ",
2086 adapter->base, adapter->host->irq);
2087
2088 seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2089 adapter->numldrv, adapter->product_info.nchannels);
2090
2091 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2092 adapter->fw_version, adapter->bios_version,
2093 adapter->product_info.dram_size);
2094
2095 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2096 adapter->product_info.max_commands, adapter->max_cmds);
2097
2098 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);
2099 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2100 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);
2101 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);
2102 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);
2103 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);
2104 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);
2105 seq_printf(m, "quiescent = %d\n",
2106 atomic_read(&adapter->quiescent));
2107 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);
2108
2109 seq_puts(m, "\nModule Parameters:\n");
2110 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);
2111 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2112 return 0;
2113 }
2114
2115 /**
2116 * proc_show_stat()
2117 * @m - Synthetic file construction data
2118 * @v - File iterator
2119 *
2120 * Display statistical information about the I/O activity.
2121 */
2122 static int
2123 proc_show_stat(struct seq_file *m, void *v)
2124 {
2125 adapter_t *adapter = m->private;
2126 #if MEGA_HAVE_STATS
2127 int i;
2128 #endif
2129
2130 seq_puts(m, "Statistical Information for this controller\n");
2131 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2132 #if MEGA_HAVE_STATS
2133 for(i = 0; i < adapter->numldrv; i++) {
2134 seq_printf(m, "Logical Drive %d:\n", i);
2135 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2136 adapter->nreads[i], adapter->nwrites[i]);
2137 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2138 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2139 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2140 adapter->rd_errors[i], adapter->wr_errors[i]);
2141 }
2142 #else
2143 seq_puts(m, "IO and error counters not compiled in driver.\n");
2144 #endif
2145 return 0;
2146 }
2147
2148
2149 /**
2150 * proc_show_mbox()
2151 * @m - Synthetic file construction data
2152 * @v - File iterator
2153 *
2154 * Display mailbox information for the last command issued. This information
2155 * is good for debugging.
2156 */
2157 static int
2158 proc_show_mbox(struct seq_file *m, void *v)
2159 {
2160 adapter_t *adapter = m->private;
2161 volatile mbox_t *mbox = adapter->mbox;
2162
2163 seq_puts(m, "Contents of Mail Box Structure\n");
2164 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);
2165 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2166 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);
2167 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);
2168 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);
2169 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2170 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2171 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);
2172 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);
2173 return 0;
2174 }
2175
2176
2177 /**
2178 * proc_show_rebuild_rate()
2179 * @m - Synthetic file construction data
2180 * @v - File iterator
2181 *
2182 * Display current rebuild rate
2183 */
2184 static int
2185 proc_show_rebuild_rate(struct seq_file *m, void *v)
2186 {
2187 adapter_t *adapter = m->private;
2188 dma_addr_t dma_handle;
2189 caddr_t inquiry;
2190 struct pci_dev *pdev;
2191
2192 if( make_local_pdev(adapter, &pdev) != 0 )
2193 return 0;
2194
2195 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2196 goto free_pdev;
2197
2198 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2199 seq_puts(m, "Adapter inquiry failed.\n");
2200 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2201 goto free_inquiry;
2202 }
2203
2204 if( adapter->flag & BOARD_40LD )
2205 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2206 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2207 else
2208 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2209 ((mraid_ext_inquiry *)
2210 inquiry)->raid_inq.adapter_info.rebuild_rate);
2211
2212 free_inquiry:
2213 mega_free_inquiry(inquiry, dma_handle, pdev);
2214 free_pdev:
2215 free_local_pdev(pdev);
2216 return 0;
2217 }
2218
2219
2220 /**
2221 * proc_show_battery()
2222 * @m - Synthetic file construction data
2223 * @v - File iterator
2224 *
2225 * Display information about the battery module on the controller.
2226 */
2227 static int
2228 proc_show_battery(struct seq_file *m, void *v)
2229 {
2230 adapter_t *adapter = m->private;
2231 dma_addr_t dma_handle;
2232 caddr_t inquiry;
2233 struct pci_dev *pdev;
2234 u8 battery_status;
2235
2236 if( make_local_pdev(adapter, &pdev) != 0 )
2237 return 0;
2238
2239 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2240 goto free_pdev;
2241
2242 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2243 seq_puts(m, "Adapter inquiry failed.\n");
2244 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2245 goto free_inquiry;
2246 }
2247
2248 if( adapter->flag & BOARD_40LD ) {
2249 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2250 }
2251 else {
2252 battery_status = ((mraid_ext_inquiry *)inquiry)->
2253 raid_inq.adapter_info.battery_status;
2254 }
2255
2256 /*
2257 * Decode the battery status
2258 */
2259 seq_printf(m, "Battery Status:[%d]", battery_status);
2260
2261 if(battery_status == MEGA_BATT_CHARGE_DONE)
2262 seq_puts(m, " Charge Done");
2263
2264 if(battery_status & MEGA_BATT_MODULE_MISSING)
2265 seq_puts(m, " Module Missing");
2266
2267 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2268 seq_puts(m, " Low Voltage");
2269
2270 if(battery_status & MEGA_BATT_TEMP_HIGH)
2271 seq_puts(m, " Temperature High");
2272
2273 if(battery_status & MEGA_BATT_PACK_MISSING)
2274 seq_puts(m, " Pack Missing");
2275
2276 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2277 seq_puts(m, " Charge In-progress");
2278
2279 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2280 seq_puts(m, " Charge Fail");
2281
2282 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2283 seq_puts(m, " Cycles Exceeded");
2284
2285 seq_putc(m, '\n');
2286
2287 free_inquiry:
2288 mega_free_inquiry(inquiry, dma_handle, pdev);
2289 free_pdev:
2290 free_local_pdev(pdev);
2291 return 0;
2292 }
2293
2294
2295 /*
2296 * Display scsi inquiry
2297 */
2298 static void
2299 mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2300 {
2301 int i;
2302
2303 seq_puts(m, " Vendor: ");
2304 seq_write(m, scsi_inq + 8, 8);
2305 seq_puts(m, " Model: ");
2306 seq_write(m, scsi_inq + 16, 16);
2307 seq_puts(m, " Rev: ");
2308 seq_write(m, scsi_inq + 32, 4);
2309 seq_putc(m, '\n');
2310
2311 i = scsi_inq[0] & 0x1f;
2312 seq_printf(m, " Type: %s ", scsi_device_type(i));
2313
2314 seq_printf(m, " ANSI SCSI revision: %02x",
2315 scsi_inq[2] & 0x07);
2316
2317 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2318 seq_puts(m, " CCS\n");
2319 else
2320 seq_putc(m, '\n');
2321 }
2322
2323 /**
2324 * proc_show_pdrv()
2325 * @m - Synthetic file construction data
2326 * @page - buffer to write the data in
2327 * @adapter - pointer to our soft state
2328 *
2329 * Display information about the physical drives.
2330 */
2331 static int
2332 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2333 {
2334 dma_addr_t dma_handle;
2335 char *scsi_inq;
2336 dma_addr_t scsi_inq_dma_handle;
2337 caddr_t inquiry;
2338 struct pci_dev *pdev;
2339 u8 *pdrv_state;
2340 u8 state;
2341 int tgt;
2342 int max_channels;
2343 int i;
2344
2345 if( make_local_pdev(adapter, &pdev) != 0 )
2346 return 0;
2347
2348 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2349 goto free_pdev;
2350
2351 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2352 seq_puts(m, "Adapter inquiry failed.\n");
2353 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2354 goto free_inquiry;
2355 }
2356
2357
2358 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2359 if( scsi_inq == NULL ) {
2360 seq_puts(m, "memory not available for scsi inq.\n");
2361 goto free_inquiry;
2362 }
2363
2364 if( adapter->flag & BOARD_40LD ) {
2365 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2366 }
2367 else {
2368 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2369 raid_inq.pdrv_info.pdrv_state;
2370 }
2371
2372 max_channels = adapter->product_info.nchannels;
2373
2374 if( channel >= max_channels ) {
2375 goto free_pci;
2376 }
2377
2378 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2379
2380 i = channel*16 + tgt;
2381
2382 state = *(pdrv_state + i);
2383 switch( state & 0x0F ) {
2384 case PDRV_ONLINE:
2385 seq_printf(m, "Channel:%2d Id:%2d State: Online",
2386 channel, tgt);
2387 break;
2388
2389 case PDRV_FAILED:
2390 seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2391 channel, tgt);
2392 break;
2393
2394 case PDRV_RBLD:
2395 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2396 channel, tgt);
2397 break;
2398
2399 case PDRV_HOTSPARE:
2400 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2401 channel, tgt);
2402 break;
2403
2404 default:
2405 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2406 channel, tgt);
2407 break;
2408 }
2409
2410 /*
2411 * This interface displays inquiries for disk drives
2412 * only. Inquries for logical drives and non-disk
2413 * devices are available through /proc/scsi/scsi
2414 */
2415 memset(scsi_inq, 0, 256);
2416 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2417 scsi_inq_dma_handle) ||
2418 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2419 continue;
2420 }
2421
2422 /*
2423 * Check for overflow. We print less than 240
2424 * characters for inquiry
2425 */
2426 seq_puts(m, ".\n");
2427 mega_print_inquiry(m, scsi_inq);
2428 }
2429
2430 free_pci:
2431 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2432 free_inquiry:
2433 mega_free_inquiry(inquiry, dma_handle, pdev);
2434 free_pdev:
2435 free_local_pdev(pdev);
2436 return 0;
2437 }
2438
2439 /**
2440 * proc_show_pdrv_ch0()
2441 * @m - Synthetic file construction data
2442 * @v - File iterator
2443 *
2444 * Display information about the physical drives on physical channel 0.
2445 */
2446 static int
2447 proc_show_pdrv_ch0(struct seq_file *m, void *v)
2448 {
2449 return proc_show_pdrv(m, m->private, 0);
2450 }
2451
2452
2453 /**
2454 * proc_show_pdrv_ch1()
2455 * @m - Synthetic file construction data
2456 * @v - File iterator
2457 *
2458 * Display information about the physical drives on physical channel 1.
2459 */
2460 static int
2461 proc_show_pdrv_ch1(struct seq_file *m, void *v)
2462 {
2463 return proc_show_pdrv(m, m->private, 1);
2464 }
2465
2466
2467 /**
2468 * proc_show_pdrv_ch2()
2469 * @m - Synthetic file construction data
2470 * @v - File iterator
2471 *
2472 * Display information about the physical drives on physical channel 2.
2473 */
2474 static int
2475 proc_show_pdrv_ch2(struct seq_file *m, void *v)
2476 {
2477 return proc_show_pdrv(m, m->private, 2);
2478 }
2479
2480
2481 /**
2482 * proc_show_pdrv_ch3()
2483 * @m - Synthetic file construction data
2484 * @v - File iterator
2485 *
2486 * Display information about the physical drives on physical channel 3.
2487 */
2488 static int
2489 proc_show_pdrv_ch3(struct seq_file *m, void *v)
2490 {
2491 return proc_show_pdrv(m, m->private, 3);
2492 }
2493
2494
2495 /**
2496 * proc_show_rdrv()
2497 * @m - Synthetic file construction data
2498 * @adapter - pointer to our soft state
2499 * @start - starting logical drive to display
2500 * @end - ending logical drive to display
2501 *
2502 * We do not print the inquiry information since its already available through
2503 * /proc/scsi/scsi interface
2504 */
2505 static int
2506 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2507 {
2508 dma_addr_t dma_handle;
2509 logdrv_param *lparam;
2510 megacmd_t mc;
2511 char *disk_array;
2512 dma_addr_t disk_array_dma_handle;
2513 caddr_t inquiry;
2514 struct pci_dev *pdev;
2515 u8 *rdrv_state;
2516 int num_ldrv;
2517 u32 array_sz;
2518 int i;
2519
2520 if( make_local_pdev(adapter, &pdev) != 0 )
2521 return 0;
2522
2523 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2524 goto free_pdev;
2525
2526 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2527 seq_puts(m, "Adapter inquiry failed.\n");
2528 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2529 goto free_inquiry;
2530 }
2531
2532 memset(&mc, 0, sizeof(megacmd_t));
2533
2534 if( adapter->flag & BOARD_40LD ) {
2535 array_sz = sizeof(disk_array_40ld);
2536
2537 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2538
2539 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2540 }
2541 else {
2542 array_sz = sizeof(disk_array_8ld);
2543
2544 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2545 raid_inq.logdrv_info.ldrv_state;
2546
2547 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2548 raid_inq.logdrv_info.num_ldrv;
2549 }
2550
2551 disk_array = pci_alloc_consistent(pdev, array_sz,
2552 &disk_array_dma_handle);
2553
2554 if( disk_array == NULL ) {
2555 seq_puts(m, "memory not available.\n");
2556 goto free_inquiry;
2557 }
2558
2559 mc.xferaddr = (u32)disk_array_dma_handle;
2560
2561 if( adapter->flag & BOARD_40LD ) {
2562 mc.cmd = FC_NEW_CONFIG;
2563 mc.opcode = OP_DCMD_READ_CONFIG;
2564
2565 if( mega_internal_command(adapter, &mc, NULL) ) {
2566 seq_puts(m, "40LD read config failed.\n");
2567 goto free_pci;
2568 }
2569
2570 }
2571 else {
2572 mc.cmd = NEW_READ_CONFIG_8LD;
2573
2574 if( mega_internal_command(adapter, &mc, NULL) ) {
2575 mc.cmd = READ_CONFIG_8LD;
2576 if( mega_internal_command(adapter, &mc, NULL) ) {
2577 seq_puts(m, "8LD read config failed.\n");
2578 goto free_pci;
2579 }
2580 }
2581 }
2582
2583 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2584
2585 if( adapter->flag & BOARD_40LD ) {
2586 lparam =
2587 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2588 }
2589 else {
2590 lparam =
2591 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2592 }
2593
2594 /*
2595 * Check for overflow. We print less than 240 characters for
2596 * information about each logical drive.
2597 */
2598 seq_printf(m, "Logical drive:%2d:, ", i);
2599
2600 switch( rdrv_state[i] & 0x0F ) {
2601 case RDRV_OFFLINE:
2602 seq_puts(m, "state: offline");
2603 break;
2604 case RDRV_DEGRADED:
2605 seq_puts(m, "state: degraded");
2606 break;
2607 case RDRV_OPTIMAL:
2608 seq_puts(m, "state: optimal");
2609 break;
2610 case RDRV_DELETED:
2611 seq_puts(m, "state: deleted");
2612 break;
2613 default:
2614 seq_puts(m, "state: unknown");
2615 break;
2616 }
2617
2618 /*
2619 * Check if check consistency or initialization is going on
2620 * for this logical drive.
2621 */
2622 if( (rdrv_state[i] & 0xF0) == 0x20 )
2623 seq_puts(m, ", check-consistency in progress");
2624 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2625 seq_puts(m, ", initialization in progress");
2626
2627 seq_putc(m, '\n');
2628
2629 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2630 seq_printf(m, "RAID level:%3d, ", lparam->level);
2631 seq_printf(m, "Stripe size:%3d, ",
2632 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2633 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2634
2635 seq_puts(m, "Read Policy: ");
2636 switch(lparam->read_ahead) {
2637 case NO_READ_AHEAD:
2638 seq_puts(m, "No read ahead, ");
2639 break;
2640 case READ_AHEAD:
2641 seq_puts(m, "Read ahead, ");
2642 break;
2643 case ADAP_READ_AHEAD:
2644 seq_puts(m, "Adaptive, ");
2645 break;
2646
2647 }
2648
2649 seq_puts(m, "Write Policy: ");
2650 switch(lparam->write_mode) {
2651 case WRMODE_WRITE_THRU:
2652 seq_puts(m, "Write thru, ");
2653 break;
2654 case WRMODE_WRITE_BACK:
2655 seq_puts(m, "Write back, ");
2656 break;
2657 }
2658
2659 seq_puts(m, "Cache Policy: ");
2660 switch(lparam->direct_io) {
2661 case CACHED_IO:
2662 seq_puts(m, "Cached IO\n\n");
2663 break;
2664 case DIRECT_IO:
2665 seq_puts(m, "Direct IO\n\n");
2666 break;
2667 }
2668 }
2669
2670 free_pci:
2671 pci_free_consistent(pdev, array_sz, disk_array,
2672 disk_array_dma_handle);
2673 free_inquiry:
2674 mega_free_inquiry(inquiry, dma_handle, pdev);
2675 free_pdev:
2676 free_local_pdev(pdev);
2677 return 0;
2678 }
2679
2680 /**
2681 * proc_show_rdrv_10()
2682 * @m - Synthetic file construction data
2683 * @v - File iterator
2684 *
2685 * Display real time information about the logical drives 0 through 9.
2686 */
2687 static int
2688 proc_show_rdrv_10(struct seq_file *m, void *v)
2689 {
2690 return proc_show_rdrv(m, m->private, 0, 9);
2691 }
2692
2693
2694 /**
2695 * proc_show_rdrv_20()
2696 * @m - Synthetic file construction data
2697 * @v - File iterator
2698 *
2699 * Display real time information about the logical drives 0 through 9.
2700 */
2701 static int
2702 proc_show_rdrv_20(struct seq_file *m, void *v)
2703 {
2704 return proc_show_rdrv(m, m->private, 10, 19);
2705 }
2706
2707
2708 /**
2709 * proc_show_rdrv_30()
2710 * @m - Synthetic file construction data
2711 * @v - File iterator
2712 *
2713 * Display real time information about the logical drives 0 through 9.
2714 */
2715 static int
2716 proc_show_rdrv_30(struct seq_file *m, void *v)
2717 {
2718 return proc_show_rdrv(m, m->private, 20, 29);
2719 }
2720
2721
2722 /**
2723 * proc_show_rdrv_40()
2724 * @m - Synthetic file construction data
2725 * @v - File iterator
2726 *
2727 * Display real time information about the logical drives 0 through 9.
2728 */
2729 static int
2730 proc_show_rdrv_40(struct seq_file *m, void *v)
2731 {
2732 return proc_show_rdrv(m, m->private, 30, 39);
2733 }
2734
2735
2736 /*
2737 * seq_file wrappers for procfile show routines.
2738 */
2739 static int mega_proc_open(struct inode *inode, struct file *file)
2740 {
2741 adapter_t *adapter = proc_get_parent_data(inode);
2742 int (*show)(struct seq_file *, void *) = PDE_DATA(inode);
2743
2744 return single_open(file, show, adapter);
2745 }
2746
2747 static const struct file_operations mega_proc_fops = {
2748 .open = mega_proc_open,
2749 .read = seq_read,
2750 .llseek = seq_lseek,
2751 .release = single_release,
2752 };
2753
2754 /*
2755 * Table of proc files we need to create.
2756 */
2757 struct mega_proc_file {
2758 const char *name;
2759 unsigned short ptr_offset;
2760 int (*show) (struct seq_file *m, void *v);
2761 };
2762
2763 static const struct mega_proc_file mega_proc_files[] = {
2764 { "config", offsetof(adapter_t, proc_read), proc_show_config },
2765 { "stat", offsetof(adapter_t, proc_stat), proc_show_stat },
2766 { "mailbox", offsetof(adapter_t, proc_mbox), proc_show_mbox },
2767 #if MEGA_HAVE_ENH_PROC
2768 { "rebuild-rate", offsetof(adapter_t, proc_rr), proc_show_rebuild_rate },
2769 { "battery-status", offsetof(adapter_t, proc_battery), proc_show_battery },
2770 { "diskdrives-ch0", offsetof(adapter_t, proc_pdrvstat[0]), proc_show_pdrv_ch0 },
2771 { "diskdrives-ch1", offsetof(adapter_t, proc_pdrvstat[1]), proc_show_pdrv_ch1 },
2772 { "diskdrives-ch2", offsetof(adapter_t, proc_pdrvstat[2]), proc_show_pdrv_ch2 },
2773 { "diskdrives-ch3", offsetof(adapter_t, proc_pdrvstat[3]), proc_show_pdrv_ch3 },
2774 { "raiddrives-0-9", offsetof(adapter_t, proc_rdrvstat[0]), proc_show_rdrv_10 },
2775 { "raiddrives-10-19", offsetof(adapter_t, proc_rdrvstat[1]), proc_show_rdrv_20 },
2776 { "raiddrives-20-29", offsetof(adapter_t, proc_rdrvstat[2]), proc_show_rdrv_30 },
2777 { "raiddrives-30-39", offsetof(adapter_t, proc_rdrvstat[3]), proc_show_rdrv_40 },
2778 #endif
2779 { NULL }
2780 };
2781
2782 /**
2783 * mega_create_proc_entry()
2784 * @index - index in soft state array
2785 * @parent - parent node for this /proc entry
2786 *
2787 * Creates /proc entries for our controllers.
2788 */
2789 static void
2790 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2791 {
2792 const struct mega_proc_file *f;
2793 adapter_t *adapter = hba_soft_state[index];
2794 struct proc_dir_entry *dir, *de, **ppde;
2795 u8 string[16];
2796
2797 sprintf(string, "hba%d", adapter->host->host_no);
2798
2799 dir = adapter->controller_proc_dir_entry =
2800 proc_mkdir_data(string, 0, parent, adapter);
2801 if(!dir) {
2802 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2803 return;
2804 }
2805
2806 for (f = mega_proc_files; f->name; f++) {
2807 de = proc_create_data(f->name, S_IRUSR, dir, &mega_proc_fops,
2808 f->show);
2809 if (!de) {
2810 printk(KERN_WARNING "\nmegaraid: proc_create failed\n");
2811 return;
2812 }
2813
2814 ppde = (void *)adapter + f->ptr_offset;
2815 *ppde = de;
2816 }
2817 }
2818
2819 #else
2820 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2821 {
2822 }
2823 #endif
2824
2825
2826 /**
2827 * megaraid_biosparam()
2828 *
2829 * Return the disk geometry for a particular disk
2830 */
2831 static int
2832 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2833 sector_t capacity, int geom[])
2834 {
2835 adapter_t *adapter;
2836 unsigned char *bh;
2837 int heads;
2838 int sectors;
2839 int cylinders;
2840 int rval;
2841
2842 /* Get pointer to host config structure */
2843 adapter = (adapter_t *)sdev->host->hostdata;
2844
2845 if (IS_RAID_CH(adapter, sdev->channel)) {
2846 /* Default heads (64) & sectors (32) */
2847 heads = 64;
2848 sectors = 32;
2849 cylinders = (ulong)capacity / (heads * sectors);
2850
2851 /*
2852 * Handle extended translation size for logical drives
2853 * > 1Gb
2854 */
2855 if ((ulong)capacity >= 0x200000) {
2856 heads = 255;
2857 sectors = 63;
2858 cylinders = (ulong)capacity / (heads * sectors);
2859 }
2860
2861 /* return result */
2862 geom[0] = heads;
2863 geom[1] = sectors;
2864 geom[2] = cylinders;
2865 }
2866 else {
2867 bh = scsi_bios_ptable(bdev);
2868
2869 if( bh ) {
2870 rval = scsi_partsize(bh, capacity,
2871 &geom[2], &geom[0], &geom[1]);
2872 kfree(bh);
2873 if( rval != -1 )
2874 return rval;
2875 }
2876
2877 printk(KERN_INFO
2878 "megaraid: invalid partition on this disk on channel %d\n",
2879 sdev->channel);
2880
2881 /* Default heads (64) & sectors (32) */
2882 heads = 64;
2883 sectors = 32;
2884 cylinders = (ulong)capacity / (heads * sectors);
2885
2886 /* Handle extended translation size for logical drives > 1Gb */
2887 if ((ulong)capacity >= 0x200000) {
2888 heads = 255;
2889 sectors = 63;
2890 cylinders = (ulong)capacity / (heads * sectors);
2891 }
2892
2893 /* return result */
2894 geom[0] = heads;
2895 geom[1] = sectors;
2896 geom[2] = cylinders;
2897 }
2898
2899 return 0;
2900 }
2901
2902 /**
2903 * mega_init_scb()
2904 * @adapter - pointer to our soft state
2905 *
2906 * Allocate memory for the various pointers in the scb structures:
2907 * scatter-gather list pointer, passthru and extended passthru structure
2908 * pointers.
2909 */
2910 static int
2911 mega_init_scb(adapter_t *adapter)
2912 {
2913 scb_t *scb;
2914 int i;
2915
2916 for( i = 0; i < adapter->max_cmds; i++ ) {
2917
2918 scb = &adapter->scb_list[i];
2919
2920 scb->sgl64 = NULL;
2921 scb->sgl = NULL;
2922 scb->pthru = NULL;
2923 scb->epthru = NULL;
2924 }
2925
2926 for( i = 0; i < adapter->max_cmds; i++ ) {
2927
2928 scb = &adapter->scb_list[i];
2929
2930 scb->idx = i;
2931
2932 scb->sgl64 = pci_alloc_consistent(adapter->dev,
2933 sizeof(mega_sgl64) * adapter->sglen,
2934 &scb->sgl_dma_addr);
2935
2936 scb->sgl = (mega_sglist *)scb->sgl64;
2937
2938 if( !scb->sgl ) {
2939 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
2940 mega_free_sgl(adapter);
2941 return -1;
2942 }
2943
2944 scb->pthru = pci_alloc_consistent(adapter->dev,
2945 sizeof(mega_passthru),
2946 &scb->pthru_dma_addr);
2947
2948 if( !scb->pthru ) {
2949 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
2950 mega_free_sgl(adapter);
2951 return -1;
2952 }
2953
2954 scb->epthru = pci_alloc_consistent(adapter->dev,
2955 sizeof(mega_ext_passthru),
2956 &scb->epthru_dma_addr);
2957
2958 if( !scb->epthru ) {
2959 printk(KERN_WARNING
2960 "Can't allocate extended passthru.\n");
2961 mega_free_sgl(adapter);
2962 return -1;
2963 }
2964
2965
2966 scb->dma_type = MEGA_DMA_TYPE_NONE;
2967
2968 /*
2969 * Link to free list
2970 * lock not required since we are loading the driver, so no
2971 * commands possible right now.
2972 */
2973 scb->state = SCB_FREE;
2974 scb->cmd = NULL;
2975 list_add(&scb->list, &adapter->free_list);
2976 }
2977
2978 return 0;
2979 }
2980
2981
2982 /**
2983 * megadev_open()
2984 * @inode - unused
2985 * @filep - unused
2986 *
2987 * Routines for the character/ioctl interface to the driver. Find out if this
2988 * is a valid open.
2989 */
2990 static int
2991 megadev_open (struct inode *inode, struct file *filep)
2992 {
2993 /*
2994 * Only allow superuser to access private ioctl interface
2995 */
2996 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2997
2998 return 0;
2999 }
3000
3001
3002 /**
3003 * megadev_ioctl()
3004 * @inode - Our device inode
3005 * @filep - unused
3006 * @cmd - ioctl command
3007 * @arg - user buffer
3008 *
3009 * ioctl entry point for our private ioctl interface. We move the data in from
3010 * the user space, prepare the command (if necessary, convert the old MIMD
3011 * ioctl to new ioctl command), and issue a synchronous command to the
3012 * controller.
3013 */
3014 static int
3015 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3016 {
3017 adapter_t *adapter;
3018 nitioctl_t uioc;
3019 int adapno;
3020 int rval;
3021 mega_passthru __user *upthru; /* user address for passthru */
3022 mega_passthru *pthru; /* copy user passthru here */
3023 dma_addr_t pthru_dma_hndl;
3024 void *data = NULL; /* data to be transferred */
3025 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3026 megacmd_t mc;
3027 megastat_t __user *ustats;
3028 int num_ldrv;
3029 u32 uxferaddr = 0;
3030 struct pci_dev *pdev;
3031
3032 ustats = NULL; /* avoid compilation warnings */
3033 num_ldrv = 0;
3034
3035 /*
3036 * Make sure only USCSICMD are issued through this interface.
3037 * MIMD application would still fire different command.
3038 */
3039 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3040 return -EINVAL;
3041 }
3042
3043 /*
3044 * Check and convert a possible MIMD command to NIT command.
3045 * mega_m_to_n() copies the data from the user space, so we do not
3046 * have to do it here.
3047 * NOTE: We will need some user address to copyout the data, therefore
3048 * the inteface layer will also provide us with the required user
3049 * addresses.
3050 */
3051 memset(&uioc, 0, sizeof(nitioctl_t));
3052 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3053 return rval;
3054
3055
3056 switch( uioc.opcode ) {
3057
3058 case GET_DRIVER_VER:
3059 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3060 return (-EFAULT);
3061
3062 break;
3063
3064 case GET_N_ADAP:
3065 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3066 return (-EFAULT);
3067
3068 /*
3069 * Shucks. MIMD interface returns a positive value for number
3070 * of adapters. TODO: Change it to return 0 when there is no
3071 * applicatio using mimd interface.
3072 */
3073 return hba_count;
3074
3075 case GET_ADAP_INFO:
3076
3077 /*
3078 * Which adapter
3079 */
3080 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3081 return (-ENODEV);
3082
3083 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3084 sizeof(struct mcontroller)) )
3085 return (-EFAULT);
3086 break;
3087
3088 #if MEGA_HAVE_STATS
3089
3090 case GET_STATS:
3091 /*
3092 * Which adapter
3093 */
3094 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3095 return (-ENODEV);
3096
3097 adapter = hba_soft_state[adapno];
3098
3099 ustats = uioc.uioc_uaddr;
3100
3101 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3102 return (-EFAULT);
3103
3104 /*
3105 * Check for the validity of the logical drive number
3106 */
3107 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3108
3109 if( copy_to_user(ustats->nreads, adapter->nreads,
3110 num_ldrv*sizeof(u32)) )
3111 return -EFAULT;
3112
3113 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3114 num_ldrv*sizeof(u32)) )
3115 return -EFAULT;
3116
3117 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3118 num_ldrv*sizeof(u32)) )
3119 return -EFAULT;
3120
3121 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3122 num_ldrv*sizeof(u32)) )
3123 return -EFAULT;
3124
3125 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3126 num_ldrv*sizeof(u32)) )
3127 return -EFAULT;
3128
3129 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3130 num_ldrv*sizeof(u32)) )
3131 return -EFAULT;
3132
3133 return 0;
3134
3135 #endif
3136 case MBOX_CMD:
3137
3138 /*
3139 * Which adapter
3140 */
3141 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3142 return (-ENODEV);
3143
3144 adapter = hba_soft_state[adapno];
3145
3146 /*
3147 * Deletion of logical drive is a special case. The adapter
3148 * should be quiescent before this command is issued.
3149 */
3150 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3151 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3152
3153 /*
3154 * Do we support this feature
3155 */
3156 if( !adapter->support_random_del ) {
3157 printk(KERN_WARNING "megaraid: logdrv ");
3158 printk("delete on non-supporting F/W.\n");
3159
3160 return (-EINVAL);
3161 }
3162
3163 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3164
3165 if( rval == 0 ) {
3166 memset(&mc, 0, sizeof(megacmd_t));
3167
3168 mc.status = rval;
3169
3170 rval = mega_n_to_m((void __user *)arg, &mc);
3171 }
3172
3173 return rval;
3174 }
3175 /*
3176 * This interface only support the regular passthru commands.
3177 * Reject extended passthru and 64-bit passthru
3178 */
3179 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3180 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3181
3182 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3183
3184 return (-EINVAL);
3185 }
3186
3187 /*
3188 * For all internal commands, the buffer must be allocated in
3189 * <4GB address range
3190 */
3191 if( make_local_pdev(adapter, &pdev) != 0 )
3192 return -EIO;
3193
3194 /* Is it a passthru command or a DCMD */
3195 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3196 /* Passthru commands */
3197
3198 pthru = pci_alloc_consistent(pdev,
3199 sizeof(mega_passthru),
3200 &pthru_dma_hndl);
3201
3202 if( pthru == NULL ) {
3203 free_local_pdev(pdev);
3204 return (-ENOMEM);
3205 }
3206
3207 /*
3208 * The user passthru structure
3209 */
3210 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3211
3212 /*
3213 * Copy in the user passthru here.
3214 */
3215 if( copy_from_user(pthru, upthru,
3216 sizeof(mega_passthru)) ) {
3217
3218 pci_free_consistent(pdev,
3219 sizeof(mega_passthru), pthru,
3220 pthru_dma_hndl);
3221
3222 free_local_pdev(pdev);
3223
3224 return (-EFAULT);
3225 }
3226
3227 /*
3228 * Is there a data transfer
3229 */
3230 if( pthru->dataxferlen ) {
3231 data = pci_alloc_consistent(pdev,
3232 pthru->dataxferlen,
3233 &data_dma_hndl);
3234
3235 if( data == NULL ) {
3236 pci_free_consistent(pdev,
3237 sizeof(mega_passthru),
3238 pthru,
3239 pthru_dma_hndl);
3240
3241 free_local_pdev(pdev);
3242
3243 return (-ENOMEM);
3244 }
3245
3246 /*
3247 * Save the user address and point the kernel
3248 * address at just allocated memory
3249 */
3250 uxferaddr = pthru->dataxferaddr;
3251 pthru->dataxferaddr = data_dma_hndl;
3252 }
3253
3254
3255 /*
3256 * Is data coming down-stream
3257 */
3258 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3259 /*
3260 * Get the user data
3261 */
3262 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3263 pthru->dataxferlen) ) {
3264 rval = (-EFAULT);
3265 goto freemem_and_return;
3266 }
3267 }
3268
3269 memset(&mc, 0, sizeof(megacmd_t));
3270
3271 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3272 mc.xferaddr = (u32)pthru_dma_hndl;
3273
3274 /*
3275 * Issue the command
3276 */
3277 mega_internal_command(adapter, &mc, pthru);
3278
3279 rval = mega_n_to_m((void __user *)arg, &mc);
3280
3281 if( rval ) goto freemem_and_return;
3282
3283
3284 /*
3285 * Is data going up-stream
3286 */
3287 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3288 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3289 pthru->dataxferlen) ) {
3290 rval = (-EFAULT);
3291 }
3292 }
3293
3294 /*
3295 * Send the request sense data also, irrespective of
3296 * whether the user has asked for it or not.
3297 */
3298 if (copy_to_user(upthru->reqsensearea,
3299 pthru->reqsensearea, 14))
3300 rval = -EFAULT;
3301
3302 freemem_and_return:
3303 if( pthru->dataxferlen ) {
3304 pci_free_consistent(pdev,
3305 pthru->dataxferlen, data,
3306 data_dma_hndl);
3307 }
3308
3309 pci_free_consistent(pdev, sizeof(mega_passthru),
3310 pthru, pthru_dma_hndl);
3311
3312 free_local_pdev(pdev);
3313
3314 return rval;
3315 }
3316 else {
3317 /* DCMD commands */
3318
3319 /*
3320 * Is there a data transfer
3321 */
3322 if( uioc.xferlen ) {
3323 data = pci_alloc_consistent(pdev,
3324 uioc.xferlen, &data_dma_hndl);
3325
3326 if( data == NULL ) {
3327 free_local_pdev(pdev);
3328 return (-ENOMEM);
3329 }
3330
3331 uxferaddr = MBOX(uioc)->xferaddr;
3332 }
3333
3334 /*
3335 * Is data coming down-stream
3336 */
3337 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3338 /*
3339 * Get the user data
3340 */
3341 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3342 uioc.xferlen) ) {
3343
3344 pci_free_consistent(pdev,
3345 uioc.xferlen,
3346 data, data_dma_hndl);
3347
3348 free_local_pdev(pdev);
3349
3350 return (-EFAULT);
3351 }
3352 }
3353
3354 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3355
3356 mc.xferaddr = (u32)data_dma_hndl;
3357
3358 /*
3359 * Issue the command
3360 */
3361 mega_internal_command(adapter, &mc, NULL);
3362
3363 rval = mega_n_to_m((void __user *)arg, &mc);
3364
3365 if( rval ) {
3366 if( uioc.xferlen ) {
3367 pci_free_consistent(pdev,
3368 uioc.xferlen, data,
3369 data_dma_hndl);
3370 }
3371
3372 free_local_pdev(pdev);
3373
3374 return rval;
3375 }
3376
3377 /*
3378 * Is data going up-stream
3379 */
3380 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3381 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3382 uioc.xferlen) ) {
3383
3384 rval = (-EFAULT);
3385 }
3386 }
3387
3388 if( uioc.xferlen ) {
3389 pci_free_consistent(pdev,
3390 uioc.xferlen, data,
3391 data_dma_hndl);
3392 }
3393
3394 free_local_pdev(pdev);
3395
3396 return rval;
3397 }
3398
3399 default:
3400 return (-EINVAL);
3401 }
3402
3403 return 0;
3404 }
3405
3406 static long
3407 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3408 {
3409 int ret;
3410
3411 mutex_lock(&megadev_mutex);
3412 ret = megadev_ioctl(filep, cmd, arg);
3413 mutex_unlock(&megadev_mutex);
3414
3415 return ret;
3416 }
3417
3418 /**
3419 * mega_m_to_n()
3420 * @arg - user address
3421 * @uioc - new ioctl structure
3422 *
3423 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3424 * structure
3425 *
3426 * Converts the older mimd ioctl structure to newer NIT structure
3427 */
3428 static int
3429 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3430 {
3431 struct uioctl_t uioc_mimd;
3432 char signature[8] = {0};
3433 u8 opcode;
3434 u8 subopcode;
3435
3436
3437 /*
3438 * check is the application conforms to NIT. We do not have to do much
3439 * in that case.
3440 * We exploit the fact that the signature is stored in the very
3441 * beginning of the structure.
3442 */
3443
3444 if( copy_from_user(signature, arg, 7) )
3445 return (-EFAULT);
3446
3447 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3448
3449 /*
3450 * NOTE NOTE: The nit ioctl is still under flux because of
3451 * change of mailbox definition, in HPE. No applications yet
3452 * use this interface and let's not have applications use this
3453 * interface till the new specifitions are in place.
3454 */
3455 return -EINVAL;
3456 #if 0
3457 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3458 return (-EFAULT);
3459 return 0;
3460 #endif
3461 }
3462
3463 /*
3464 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3465 *
3466 * Get the user ioctl structure
3467 */
3468 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3469 return (-EFAULT);
3470
3471
3472 /*
3473 * Get the opcode and subopcode for the commands
3474 */
3475 opcode = uioc_mimd.ui.fcs.opcode;
3476 subopcode = uioc_mimd.ui.fcs.subopcode;
3477
3478 switch (opcode) {
3479 case 0x82:
3480
3481 switch (subopcode) {
3482
3483 case MEGAIOC_QDRVRVER: /* Query driver version */
3484 uioc->opcode = GET_DRIVER_VER;
3485 uioc->uioc_uaddr = uioc_mimd.data;
3486 break;
3487
3488 case MEGAIOC_QNADAP: /* Get # of adapters */
3489 uioc->opcode = GET_N_ADAP;
3490 uioc->uioc_uaddr = uioc_mimd.data;
3491 break;
3492
3493 case MEGAIOC_QADAPINFO: /* Get adapter information */
3494 uioc->opcode = GET_ADAP_INFO;
3495 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3496 uioc->uioc_uaddr = uioc_mimd.data;
3497 break;
3498
3499 default:
3500 return(-EINVAL);
3501 }
3502
3503 break;
3504
3505
3506 case 0x81:
3507
3508 uioc->opcode = MBOX_CMD;
3509 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3510
3511 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3512
3513 uioc->xferlen = uioc_mimd.ui.fcs.length;
3514
3515 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3516 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3517
3518 break;
3519
3520 case 0x80:
3521
3522 uioc->opcode = MBOX_CMD;
3523 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3524
3525 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3526
3527 /*
3528 * Choose the xferlen bigger of input and output data
3529 */
3530 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3531 uioc_mimd.outlen : uioc_mimd.inlen;
3532
3533 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3534 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3535
3536 break;
3537
3538 default:
3539 return (-EINVAL);
3540
3541 }
3542
3543 return 0;
3544 }
3545
3546 /*
3547 * mega_n_to_m()
3548 * @arg - user address
3549 * @mc - mailbox command
3550 *
3551 * Updates the status information to the application, depending on application
3552 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3553 */
3554 static int
3555 mega_n_to_m(void __user *arg, megacmd_t *mc)
3556 {
3557 nitioctl_t __user *uiocp;
3558 megacmd_t __user *umc;
3559 mega_passthru __user *upthru;
3560 struct uioctl_t __user *uioc_mimd;
3561 char signature[8] = {0};
3562
3563 /*
3564 * check is the application conforms to NIT.
3565 */
3566 if( copy_from_user(signature, arg, 7) )
3567 return -EFAULT;
3568
3569 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3570
3571 uiocp = arg;
3572
3573 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3574 return (-EFAULT);
3575
3576 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3577
3578 umc = MBOX_P(uiocp);
3579
3580 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3581 return -EFAULT;
3582
3583 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3584 return (-EFAULT);
3585 }
3586 }
3587 else {
3588 uioc_mimd = arg;
3589
3590 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3591 return (-EFAULT);
3592
3593 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3594
3595 umc = (megacmd_t __user *)uioc_mimd->mbox;
3596
3597 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3598 return (-EFAULT);
3599
3600 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3601 return (-EFAULT);
3602 }
3603 }
3604
3605 return 0;
3606 }
3607
3608
3609 /*
3610 * MEGARAID 'FW' commands.
3611 */
3612
3613 /**
3614 * mega_is_bios_enabled()
3615 * @adapter - pointer to our soft state
3616 *
3617 * issue command to find out if the BIOS is enabled for this controller
3618 */
3619 static int
3620 mega_is_bios_enabled(adapter_t *adapter)
3621 {
3622 unsigned char raw_mbox[sizeof(struct mbox_out)];
3623 mbox_t *mbox;
3624 int ret;
3625
3626 mbox = (mbox_t *)raw_mbox;
3627
3628 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3629
3630 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3631
3632 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3633
3634 raw_mbox[0] = IS_BIOS_ENABLED;
3635 raw_mbox[2] = GET_BIOS;
3636
3637
3638 ret = issue_scb_block(adapter, raw_mbox);
3639
3640 return *(char *)adapter->mega_buffer;
3641 }
3642
3643
3644 /**
3645 * mega_enum_raid_scsi()
3646 * @adapter - pointer to our soft state
3647 *
3648 * Find out what channels are RAID/SCSI. This information is used to
3649 * differentiate the virtual channels and physical channels and to support
3650 * ROMB feature and non-disk devices.
3651 */
3652 static void
3653 mega_enum_raid_scsi(adapter_t *adapter)
3654 {
3655 unsigned char raw_mbox[sizeof(struct mbox_out)];
3656 mbox_t *mbox;
3657 int i;
3658
3659 mbox = (mbox_t *)raw_mbox;
3660
3661 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3662
3663 /*
3664 * issue command to find out what channels are raid/scsi
3665 */
3666 raw_mbox[0] = CHNL_CLASS;
3667 raw_mbox[2] = GET_CHNL_CLASS;
3668
3669 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3670
3671 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3672
3673 /*
3674 * Non-ROMB firmware fail this command, so all channels
3675 * must be shown RAID
3676 */
3677 adapter->mega_ch_class = 0xFF;
3678
3679 if(!issue_scb_block(adapter, raw_mbox)) {
3680 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3681
3682 }
3683
3684 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3685 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3686 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3687 i);
3688 }
3689 else {
3690 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3691 i);
3692 }
3693 }
3694
3695 return;
3696 }
3697
3698
3699 /**
3700 * mega_get_boot_drv()
3701 * @adapter - pointer to our soft state
3702 *
3703 * Find out which device is the boot device. Note, any logical drive or any
3704 * phyical device (e.g., a CDROM) can be designated as a boot device.
3705 */
3706 static void
3707 mega_get_boot_drv(adapter_t *adapter)
3708 {
3709 struct private_bios_data *prv_bios_data;
3710 unsigned char raw_mbox[sizeof(struct mbox_out)];
3711 mbox_t *mbox;
3712 u16 cksum = 0;
3713 u8 *cksum_p;
3714 u8 boot_pdrv;
3715 int i;
3716
3717 mbox = (mbox_t *)raw_mbox;
3718
3719 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3720
3721 raw_mbox[0] = BIOS_PVT_DATA;
3722 raw_mbox[2] = GET_BIOS_PVT_DATA;
3723
3724 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3725
3726 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3727
3728 adapter->boot_ldrv_enabled = 0;
3729 adapter->boot_ldrv = 0;
3730
3731 adapter->boot_pdrv_enabled = 0;
3732 adapter->boot_pdrv_ch = 0;
3733 adapter->boot_pdrv_tgt = 0;
3734
3735 if(issue_scb_block(adapter, raw_mbox) == 0) {
3736 prv_bios_data =
3737 (struct private_bios_data *)adapter->mega_buffer;
3738
3739 cksum = 0;
3740 cksum_p = (char *)prv_bios_data;
3741 for (i = 0; i < 14; i++ ) {
3742 cksum += (u16)(*cksum_p++);
3743 }
3744
3745 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3746
3747 /*
3748 * If MSB is set, a physical drive is set as boot
3749 * device
3750 */
3751 if( prv_bios_data->boot_drv & 0x80 ) {
3752 adapter->boot_pdrv_enabled = 1;
3753 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3754 adapter->boot_pdrv_ch = boot_pdrv / 16;
3755 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3756 }
3757 else {
3758 adapter->boot_ldrv_enabled = 1;
3759 adapter->boot_ldrv = prv_bios_data->boot_drv;
3760 }
3761 }
3762 }
3763
3764 }
3765
3766 /**
3767 * mega_support_random_del()
3768 * @adapter - pointer to our soft state
3769 *
3770 * Find out if this controller supports random deletion and addition of
3771 * logical drives
3772 */
3773 static int
3774 mega_support_random_del(adapter_t *adapter)
3775 {
3776 unsigned char raw_mbox[sizeof(struct mbox_out)];
3777 mbox_t *mbox;
3778 int rval;
3779
3780 mbox = (mbox_t *)raw_mbox;
3781
3782 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3783
3784 /*
3785 * issue command
3786 */
3787 raw_mbox[0] = FC_DEL_LOGDRV;
3788 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3789
3790 rval = issue_scb_block(adapter, raw_mbox);
3791
3792 return !rval;
3793 }
3794
3795
3796 /**
3797 * mega_support_ext_cdb()
3798 * @adapter - pointer to our soft state
3799 *
3800 * Find out if this firmware support cdblen > 10
3801 */
3802 static int
3803 mega_support_ext_cdb(adapter_t *adapter)
3804 {
3805 unsigned char raw_mbox[sizeof(struct mbox_out)];
3806 mbox_t *mbox;
3807 int rval;
3808
3809 mbox = (mbox_t *)raw_mbox;
3810
3811 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3812 /*
3813 * issue command to find out if controller supports extended CDBs.
3814 */
3815 raw_mbox[0] = 0xA4;
3816 raw_mbox[2] = 0x16;
3817
3818 rval = issue_scb_block(adapter, raw_mbox);
3819
3820 return !rval;
3821 }
3822
3823
3824 /**
3825 * mega_del_logdrv()
3826 * @adapter - pointer to our soft state
3827 * @logdrv - logical drive to be deleted
3828 *
3829 * Delete the specified logical drive. It is the responsibility of the user
3830 * app to let the OS know about this operation.
3831 */
3832 static int
3833 mega_del_logdrv(adapter_t *adapter, int logdrv)
3834 {
3835 unsigned long flags;
3836 scb_t *scb;
3837 int rval;
3838
3839 /*
3840 * Stop sending commands to the controller, queue them internally.
3841 * When deletion is complete, ISR will flush the queue.
3842 */
3843 atomic_set(&adapter->quiescent, 1);
3844
3845 /*
3846 * Wait till all the issued commands are complete and there are no
3847 * commands in the pending queue
3848 */
3849 while (atomic_read(&adapter->pend_cmds) > 0 ||
3850 !list_empty(&adapter->pending_list))
3851 msleep(1000); /* sleep for 1s */
3852
3853 rval = mega_do_del_logdrv(adapter, logdrv);
3854
3855 spin_lock_irqsave(&adapter->lock, flags);
3856
3857 /*
3858 * If delete operation was successful, add 0x80 to the logical drive
3859 * ids for commands in the pending queue.
3860 */
3861 if (adapter->read_ldidmap) {
3862 struct list_head *pos;
3863 list_for_each(pos, &adapter->pending_list) {
3864 scb = list_entry(pos, scb_t, list);
3865 if (scb->pthru->logdrv < 0x80 )
3866 scb->pthru->logdrv += 0x80;
3867 }
3868 }
3869
3870 atomic_set(&adapter->quiescent, 0);
3871
3872 mega_runpendq(adapter);
3873
3874 spin_unlock_irqrestore(&adapter->lock, flags);
3875
3876 return rval;
3877 }
3878
3879
3880 static int
3881 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3882 {
3883 megacmd_t mc;
3884 int rval;
3885
3886 memset( &mc, 0, sizeof(megacmd_t));
3887
3888 mc.cmd = FC_DEL_LOGDRV;
3889 mc.opcode = OP_DEL_LOGDRV;
3890 mc.subopcode = logdrv;
3891
3892 rval = mega_internal_command(adapter, &mc, NULL);
3893
3894 /* log this event */
3895 if(rval) {
3896 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
3897 return rval;
3898 }
3899
3900 /*
3901 * After deleting first logical drive, the logical drives must be
3902 * addressed by adding 0x80 to the logical drive id.
3903 */
3904 adapter->read_ldidmap = 1;
3905
3906 return rval;
3907 }
3908
3909
3910 /**
3911 * mega_get_max_sgl()
3912 * @adapter - pointer to our soft state
3913 *
3914 * Find out the maximum number of scatter-gather elements supported by this
3915 * version of the firmware
3916 */
3917 static void
3918 mega_get_max_sgl(adapter_t *adapter)
3919 {
3920 unsigned char raw_mbox[sizeof(struct mbox_out)];
3921 mbox_t *mbox;
3922
3923 mbox = (mbox_t *)raw_mbox;
3924
3925 memset(mbox, 0, sizeof(raw_mbox));
3926
3927 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3928
3929 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3930
3931 raw_mbox[0] = MAIN_MISC_OPCODE;
3932 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3933
3934
3935 if( issue_scb_block(adapter, raw_mbox) ) {
3936 /*
3937 * f/w does not support this command. Choose the default value
3938 */
3939 adapter->sglen = MIN_SGLIST;
3940 }
3941 else {
3942 adapter->sglen = *((char *)adapter->mega_buffer);
3943
3944 /*
3945 * Make sure this is not more than the resources we are
3946 * planning to allocate
3947 */
3948 if ( adapter->sglen > MAX_SGLIST )
3949 adapter->sglen = MAX_SGLIST;
3950 }
3951
3952 return;
3953 }
3954
3955
3956 /**
3957 * mega_support_cluster()
3958 * @adapter - pointer to our soft state
3959 *
3960 * Find out if this firmware support cluster calls.
3961 */
3962 static int
3963 mega_support_cluster(adapter_t *adapter)
3964 {
3965 unsigned char raw_mbox[sizeof(struct mbox_out)];
3966 mbox_t *mbox;
3967
3968 mbox = (mbox_t *)raw_mbox;
3969
3970 memset(mbox, 0, sizeof(raw_mbox));
3971
3972 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3973
3974 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3975
3976 /*
3977 * Try to get the initiator id. This command will succeed iff the
3978 * clustering is available on this HBA.
3979 */
3980 raw_mbox[0] = MEGA_GET_TARGET_ID;
3981
3982 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3983
3984 /*
3985 * Cluster support available. Get the initiator target id.
3986 * Tell our id to mid-layer too.
3987 */
3988 adapter->this_id = *(u32 *)adapter->mega_buffer;
3989 adapter->host->this_id = adapter->this_id;
3990
3991 return 1;
3992 }
3993
3994 return 0;
3995 }
3996
3997 #ifdef CONFIG_PROC_FS
3998 /**
3999 * mega_adapinq()
4000 * @adapter - pointer to our soft state
4001 * @dma_handle - DMA address of the buffer
4002 *
4003 * Issue internal commands while interrupts are available.
4004 * We only issue direct mailbox commands from within the driver. ioctl()
4005 * interface using these routines can issue passthru commands.
4006 */
4007 static int
4008 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4009 {
4010 megacmd_t mc;
4011
4012 memset(&mc, 0, sizeof(megacmd_t));
4013
4014 if( adapter->flag & BOARD_40LD ) {
4015 mc.cmd = FC_NEW_CONFIG;
4016 mc.opcode = NC_SUBOP_ENQUIRY3;
4017 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4018 }
4019 else {
4020 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4021 }
4022
4023 mc.xferaddr = (u32)dma_handle;
4024
4025 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4026 return -1;
4027 }
4028
4029 return 0;
4030 }
4031
4032
4033 /** mega_internal_dev_inquiry()
4034 * @adapter - pointer to our soft state
4035 * @ch - channel for this device
4036 * @tgt - ID of this device
4037 * @buf_dma_handle - DMA address of the buffer
4038 *
4039 * Issue the scsi inquiry for the specified device.
4040 */
4041 static int
4042 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4043 dma_addr_t buf_dma_handle)
4044 {
4045 mega_passthru *pthru;
4046 dma_addr_t pthru_dma_handle;
4047 megacmd_t mc;
4048 int rval;
4049 struct pci_dev *pdev;
4050
4051
4052 /*
4053 * For all internal commands, the buffer must be allocated in <4GB
4054 * address range
4055 */
4056 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4057
4058 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4059 &pthru_dma_handle);
4060
4061 if( pthru == NULL ) {
4062 free_local_pdev(pdev);
4063 return -1;
4064 }
4065
4066 pthru->timeout = 2;
4067 pthru->ars = 1;
4068 pthru->reqsenselen = 14;
4069 pthru->islogical = 0;
4070
4071 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4072
4073 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4074
4075 pthru->cdblen = 6;
4076
4077 pthru->cdb[0] = INQUIRY;
4078 pthru->cdb[1] = 0;
4079 pthru->cdb[2] = 0;
4080 pthru->cdb[3] = 0;
4081 pthru->cdb[4] = 255;
4082 pthru->cdb[5] = 0;
4083
4084
4085 pthru->dataxferaddr = (u32)buf_dma_handle;
4086 pthru->dataxferlen = 256;
4087
4088 memset(&mc, 0, sizeof(megacmd_t));
4089
4090 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4091 mc.xferaddr = (u32)pthru_dma_handle;
4092
4093 rval = mega_internal_command(adapter, &mc, pthru);
4094
4095 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4096 pthru_dma_handle);
4097
4098 free_local_pdev(pdev);
4099
4100 return rval;
4101 }
4102 #endif
4103
4104 /**
4105 * mega_internal_command()
4106 * @adapter - pointer to our soft state
4107 * @mc - the mailbox command
4108 * @pthru - Passthru structure for DCDB commands
4109 *
4110 * Issue the internal commands in interrupt mode.
4111 * The last argument is the address of the passthru structure if the command
4112 * to be fired is a passthru command
4113 *
4114 * Note: parameter 'pthru' is null for non-passthru commands.
4115 */
4116 static int
4117 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4118 {
4119 unsigned long flags;
4120 scb_t *scb;
4121 int rval;
4122
4123 /*
4124 * The internal commands share one command id and hence are
4125 * serialized. This is so because we want to reserve maximum number of
4126 * available command ids for the I/O commands.
4127 */
4128 mutex_lock(&adapter->int_mtx);
4129
4130 scb = &adapter->int_scb;
4131 memset(scb, 0, sizeof(scb_t));
4132
4133 scb->idx = CMDID_INT_CMDS;
4134 scb->state |= SCB_ACTIVE | SCB_PENDQ;
4135
4136 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4137
4138 /*
4139 * Is it a passthru command
4140 */
4141 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4142 scb->pthru = pthru;
4143
4144 spin_lock_irqsave(&adapter->lock, flags);
4145 list_add_tail(&scb->list, &adapter->pending_list);
4146 /*
4147 * Check if the HBA is in quiescent state, e.g., during a
4148 * delete logical drive opertion. If it is, don't run
4149 * the pending_list.
4150 */
4151 if (atomic_read(&adapter->quiescent) == 0)
4152 mega_runpendq(adapter);
4153 spin_unlock_irqrestore(&adapter->lock, flags);
4154
4155 wait_for_completion(&adapter->int_waitq);
4156
4157 mc->status = rval = adapter->int_status;
4158
4159 /*
4160 * Print a debug message for all failed commands. Applications can use
4161 * this information.
4162 */
4163 if (rval && trace_level) {
4164 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4165 mc->cmd, mc->opcode, mc->subopcode, rval);
4166 }
4167
4168 mutex_unlock(&adapter->int_mtx);
4169 return rval;
4170 }
4171
4172 static struct scsi_host_template megaraid_template = {
4173 .module = THIS_MODULE,
4174 .name = "MegaRAID",
4175 .proc_name = "megaraid_legacy",
4176 .info = megaraid_info,
4177 .queuecommand = megaraid_queue,
4178 .bios_param = megaraid_biosparam,
4179 .max_sectors = MAX_SECTORS_PER_IO,
4180 .can_queue = MAX_COMMANDS,
4181 .this_id = DEFAULT_INITIATOR_ID,
4182 .sg_tablesize = MAX_SGLIST,
4183 .cmd_per_lun = DEF_CMD_PER_LUN,
4184 .use_clustering = ENABLE_CLUSTERING,
4185 .eh_abort_handler = megaraid_abort,
4186 .eh_device_reset_handler = megaraid_reset,
4187 .eh_bus_reset_handler = megaraid_reset,
4188 .eh_host_reset_handler = megaraid_reset,
4189 .no_write_same = 1,
4190 };
4191
4192 static int
4193 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4194 {
4195 struct Scsi_Host *host;
4196 adapter_t *adapter;
4197 unsigned long mega_baseport, tbase, flag = 0;
4198 u16 subsysid, subsysvid;
4199 u8 pci_bus, pci_dev_func;
4200 int irq, i, j;
4201 int error = -ENODEV;
4202
4203 if (pci_enable_device(pdev))
4204 goto out;
4205 pci_set_master(pdev);
4206
4207 pci_bus = pdev->bus->number;
4208 pci_dev_func = pdev->devfn;
4209
4210 /*
4211 * The megaraid3 stuff reports the ID of the Intel part which is not
4212 * remotely specific to the megaraid
4213 */
4214 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4215 u16 magic;
4216 /*
4217 * Don't fall over the Compaq management cards using the same
4218 * PCI identifier
4219 */
4220 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4221 pdev->subsystem_device == 0xC000)
4222 return -ENODEV;
4223 /* Now check the magic signature byte */
4224 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4225 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4226 return -ENODEV;
4227 /* Ok it is probably a megaraid */
4228 }
4229
4230 /*
4231 * For these vendor and device ids, signature offsets are not
4232 * valid and 64 bit is implicit
4233 */
4234 if (id->driver_data & BOARD_64BIT)
4235 flag |= BOARD_64BIT;
4236 else {
4237 u32 magic64;
4238
4239 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4240 if (magic64 == HBA_SIGNATURE_64BIT)
4241 flag |= BOARD_64BIT;
4242 }
4243
4244 subsysvid = pdev->subsystem_vendor;
4245 subsysid = pdev->subsystem_device;
4246
4247 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4248 id->vendor, id->device, pci_bus);
4249
4250 printk("slot %d:func %d\n",
4251 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4252
4253 /* Read the base port and IRQ from PCI */
4254 mega_baseport = pci_resource_start(pdev, 0);
4255 irq = pdev->irq;
4256
4257 tbase = mega_baseport;
4258 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4259 flag |= BOARD_MEMMAP;
4260
4261 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4262 printk(KERN_WARNING "megaraid: mem region busy!\n");
4263 goto out_disable_device;
4264 }
4265
4266 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4267 if (!mega_baseport) {
4268 printk(KERN_WARNING
4269 "megaraid: could not map hba memory\n");
4270 goto out_release_region;
4271 }
4272 } else {
4273 flag |= BOARD_IOMAP;
4274 mega_baseport += 0x10;
4275
4276 if (!request_region(mega_baseport, 16, "megaraid"))
4277 goto out_disable_device;
4278 }
4279
4280 /* Initialize SCSI Host structure */
4281 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4282 if (!host)
4283 goto out_iounmap;
4284
4285 adapter = (adapter_t *)host->hostdata;
4286 memset(adapter, 0, sizeof(adapter_t));
4287
4288 printk(KERN_NOTICE
4289 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4290 host->host_no, mega_baseport, irq);
4291
4292 adapter->base = mega_baseport;
4293 if (flag & BOARD_MEMMAP)
4294 adapter->mmio_base = (void __iomem *) mega_baseport;
4295
4296 INIT_LIST_HEAD(&adapter->free_list);
4297 INIT_LIST_HEAD(&adapter->pending_list);
4298 INIT_LIST_HEAD(&adapter->completed_list);
4299
4300 adapter->flag = flag;
4301 spin_lock_init(&adapter->lock);
4302
4303 host->cmd_per_lun = max_cmd_per_lun;
4304 host->max_sectors = max_sectors_per_io;
4305
4306 adapter->dev = pdev;
4307 adapter->host = host;
4308
4309 adapter->host->irq = irq;
4310
4311 if (flag & BOARD_MEMMAP)
4312 adapter->host->base = tbase;
4313 else {
4314 adapter->host->io_port = tbase;
4315 adapter->host->n_io_port = 16;
4316 }
4317
4318 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4319
4320 /*
4321 * Allocate buffer to issue internal commands.
4322 */
4323 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4324 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4325 if (!adapter->mega_buffer) {
4326 printk(KERN_WARNING "megaraid: out of RAM.\n");
4327 goto out_host_put;
4328 }
4329
4330 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4331 if (!adapter->scb_list) {
4332 printk(KERN_WARNING "megaraid: out of RAM.\n");
4333 goto out_free_cmd_buffer;
4334 }
4335
4336 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4337 megaraid_isr_memmapped : megaraid_isr_iomapped,
4338 IRQF_SHARED, "megaraid", adapter)) {
4339 printk(KERN_WARNING
4340 "megaraid: Couldn't register IRQ %d!\n", irq);
4341 goto out_free_scb_list;
4342 }
4343
4344 if (mega_setup_mailbox(adapter))
4345 goto out_free_irq;
4346
4347 if (mega_query_adapter(adapter))
4348 goto out_free_mbox;
4349
4350 /*
4351 * Have checks for some buggy f/w
4352 */
4353 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4354 /*
4355 * Which firmware
4356 */
4357 if (!strcmp(adapter->fw_version, "3.00") ||
4358 !strcmp(adapter->fw_version, "3.01")) {
4359
4360 printk( KERN_WARNING
4361 "megaraid: Your card is a Dell PERC "
4362 "2/SC RAID controller with "
4363 "firmware\nmegaraid: 3.00 or 3.01. "
4364 "This driver is known to have "
4365 "corruption issues\nmegaraid: with "
4366 "those firmware versions on this "
4367 "specific card. In order\nmegaraid: "
4368 "to protect your data, please upgrade "
4369 "your firmware to version\nmegaraid: "
4370 "3.10 or later, available from the "
4371 "Dell Technical Support web\n"
4372 "megaraid: site at\nhttp://support."
4373 "dell.com/us/en/filelib/download/"
4374 "index.asp?fileid=2940\n"
4375 );
4376 }
4377 }
4378
4379 /*
4380 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4381 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4382 * support, since this firmware cannot handle 64 bit
4383 * addressing
4384 */
4385 if ((subsysvid == PCI_VENDOR_ID_HP) &&
4386 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4387 /*
4388 * which firmware
4389 */
4390 if (!strcmp(adapter->fw_version, "H01.07") ||
4391 !strcmp(adapter->fw_version, "H01.08") ||
4392 !strcmp(adapter->fw_version, "H01.09") ) {
4393 printk(KERN_WARNING
4394 "megaraid: Firmware H.01.07, "
4395 "H.01.08, and H.01.09 on 1M/2M "
4396 "controllers\n"
4397 "megaraid: do not support 64 bit "
4398 "addressing.\nmegaraid: DISABLING "
4399 "64 bit support.\n");
4400 adapter->flag &= ~BOARD_64BIT;
4401 }
4402 }
4403
4404 if (mega_is_bios_enabled(adapter))
4405 mega_hbas[hba_count].is_bios_enabled = 1;
4406 mega_hbas[hba_count].hostdata_addr = adapter;
4407
4408 /*
4409 * Find out which channel is raid and which is scsi. This is
4410 * for ROMB support.
4411 */
4412 mega_enum_raid_scsi(adapter);
4413
4414 /*
4415 * Find out if a logical drive is set as the boot drive. If
4416 * there is one, will make that as the first logical drive.
4417 * ROMB: Do we have to boot from a physical drive. Then all
4418 * the physical drives would appear before the logical disks.
4419 * Else, all the physical drives would be exported to the mid
4420 * layer after logical drives.
4421 */
4422 mega_get_boot_drv(adapter);
4423
4424 if (adapter->boot_pdrv_enabled) {
4425 j = adapter->product_info.nchannels;
4426 for( i = 0; i < j; i++ )
4427 adapter->logdrv_chan[i] = 0;
4428 for( i = j; i < NVIRT_CHAN + j; i++ )
4429 adapter->logdrv_chan[i] = 1;
4430 } else {
4431 for (i = 0; i < NVIRT_CHAN; i++)
4432 adapter->logdrv_chan[i] = 1;
4433 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4434 adapter->logdrv_chan[i] = 0;
4435 adapter->mega_ch_class <<= NVIRT_CHAN;
4436 }
4437
4438 /*
4439 * Do we support random deletion and addition of logical
4440 * drives
4441 */
4442 adapter->read_ldidmap = 0; /* set it after first logdrv
4443 delete cmd */
4444 adapter->support_random_del = mega_support_random_del(adapter);
4445
4446 /* Initialize SCBs */
4447 if (mega_init_scb(adapter))
4448 goto out_free_mbox;
4449
4450 /*
4451 * Reset the pending commands counter
4452 */
4453 atomic_set(&adapter->pend_cmds, 0);
4454
4455 /*
4456 * Reset the adapter quiescent flag
4457 */
4458 atomic_set(&adapter->quiescent, 0);
4459
4460 hba_soft_state[hba_count] = adapter;
4461
4462 /*
4463 * Fill in the structure which needs to be passed back to the
4464 * application when it does an ioctl() for controller related
4465 * information.
4466 */
4467 i = hba_count;
4468
4469 mcontroller[i].base = mega_baseport;
4470 mcontroller[i].irq = irq;
4471 mcontroller[i].numldrv = adapter->numldrv;
4472 mcontroller[i].pcibus = pci_bus;
4473 mcontroller[i].pcidev = id->device;
4474 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4475 mcontroller[i].pciid = -1;
4476 mcontroller[i].pcivendor = id->vendor;
4477 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4478 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4479
4480
4481 /* Set the Mode of addressing to 64 bit if we can */
4482 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4483 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4484 adapter->has_64bit_addr = 1;
4485 } else {
4486 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4487 adapter->has_64bit_addr = 0;
4488 }
4489
4490 mutex_init(&adapter->int_mtx);
4491 init_completion(&adapter->int_waitq);
4492
4493 adapter->this_id = DEFAULT_INITIATOR_ID;
4494 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4495
4496 #if MEGA_HAVE_CLUSTERING
4497 /*
4498 * Is cluster support enabled on this controller
4499 * Note: In a cluster the HBAs ( the initiators ) will have
4500 * different target IDs and we cannot assume it to be 7. Call
4501 * to mega_support_cluster() will get the target ids also if
4502 * the cluster support is available
4503 */
4504 adapter->has_cluster = mega_support_cluster(adapter);
4505 if (adapter->has_cluster) {
4506 printk(KERN_NOTICE
4507 "megaraid: Cluster driver, initiator id:%d\n",
4508 adapter->this_id);
4509 }
4510 #endif
4511
4512 pci_set_drvdata(pdev, host);
4513
4514 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4515
4516 error = scsi_add_host(host, &pdev->dev);
4517 if (error)
4518 goto out_free_mbox;
4519
4520 scsi_scan_host(host);
4521 hba_count++;
4522 return 0;
4523
4524 out_free_mbox:
4525 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4526 adapter->una_mbox64, adapter->una_mbox64_dma);
4527 out_free_irq:
4528 free_irq(adapter->host->irq, adapter);
4529 out_free_scb_list:
4530 kfree(adapter->scb_list);
4531 out_free_cmd_buffer:
4532 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4533 adapter->mega_buffer, adapter->buf_dma_handle);
4534 out_host_put:
4535 scsi_host_put(host);
4536 out_iounmap:
4537 if (flag & BOARD_MEMMAP)
4538 iounmap((void *)mega_baseport);
4539 out_release_region:
4540 if (flag & BOARD_MEMMAP)
4541 release_mem_region(tbase, 128);
4542 else
4543 release_region(mega_baseport, 16);
4544 out_disable_device:
4545 pci_disable_device(pdev);
4546 out:
4547 return error;
4548 }
4549
4550 static void
4551 __megaraid_shutdown(adapter_t *adapter)
4552 {
4553 u_char raw_mbox[sizeof(struct mbox_out)];
4554 mbox_t *mbox = (mbox_t *)raw_mbox;
4555 int i;
4556
4557 /* Flush adapter cache */
4558 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4559 raw_mbox[0] = FLUSH_ADAPTER;
4560
4561 free_irq(adapter->host->irq, adapter);
4562
4563 /* Issue a blocking (interrupts disabled) command to the card */
4564 issue_scb_block(adapter, raw_mbox);
4565
4566 /* Flush disks cache */
4567 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4568 raw_mbox[0] = FLUSH_SYSTEM;
4569
4570 /* Issue a blocking (interrupts disabled) command to the card */
4571 issue_scb_block(adapter, raw_mbox);
4572
4573 if (atomic_read(&adapter->pend_cmds) > 0)
4574 printk(KERN_WARNING "megaraid: pending commands!!\n");
4575
4576 /*
4577 * Have a delibrate delay to make sure all the caches are
4578 * actually flushed.
4579 */
4580 for (i = 0; i <= 10; i++)
4581 mdelay(1000);
4582 }
4583
4584 static void
4585 megaraid_remove_one(struct pci_dev *pdev)
4586 {
4587 struct Scsi_Host *host = pci_get_drvdata(pdev);
4588 adapter_t *adapter = (adapter_t *)host->hostdata;
4589
4590 scsi_remove_host(host);
4591
4592 __megaraid_shutdown(adapter);
4593
4594 /* Free our resources */
4595 if (adapter->flag & BOARD_MEMMAP) {
4596 iounmap((void *)adapter->base);
4597 release_mem_region(adapter->host->base, 128);
4598 } else
4599 release_region(adapter->base, 16);
4600
4601 mega_free_sgl(adapter);
4602
4603 #ifdef CONFIG_PROC_FS
4604 if (adapter->controller_proc_dir_entry) {
4605 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4606 remove_proc_entry("config",
4607 adapter->controller_proc_dir_entry);
4608 remove_proc_entry("mailbox",
4609 adapter->controller_proc_dir_entry);
4610 #if MEGA_HAVE_ENH_PROC
4611 remove_proc_entry("rebuild-rate",
4612 adapter->controller_proc_dir_entry);
4613 remove_proc_entry("battery-status",
4614 adapter->controller_proc_dir_entry);
4615
4616 remove_proc_entry("diskdrives-ch0",
4617 adapter->controller_proc_dir_entry);
4618 remove_proc_entry("diskdrives-ch1",
4619 adapter->controller_proc_dir_entry);
4620 remove_proc_entry("diskdrives-ch2",
4621 adapter->controller_proc_dir_entry);
4622 remove_proc_entry("diskdrives-ch3",
4623 adapter->controller_proc_dir_entry);
4624
4625 remove_proc_entry("raiddrives-0-9",
4626 adapter->controller_proc_dir_entry);
4627 remove_proc_entry("raiddrives-10-19",
4628 adapter->controller_proc_dir_entry);
4629 remove_proc_entry("raiddrives-20-29",
4630 adapter->controller_proc_dir_entry);
4631 remove_proc_entry("raiddrives-30-39",
4632 adapter->controller_proc_dir_entry);
4633 #endif
4634 {
4635 char buf[12] = { 0 };
4636 sprintf(buf, "hba%d", adapter->host->host_no);
4637 remove_proc_entry(buf, mega_proc_dir_entry);
4638 }
4639 }
4640 #endif
4641
4642 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4643 adapter->mega_buffer, adapter->buf_dma_handle);
4644 kfree(adapter->scb_list);
4645 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4646 adapter->una_mbox64, adapter->una_mbox64_dma);
4647
4648 scsi_host_put(host);
4649 pci_disable_device(pdev);
4650
4651 hba_count--;
4652 }
4653
4654 static void
4655 megaraid_shutdown(struct pci_dev *pdev)
4656 {
4657 struct Scsi_Host *host = pci_get_drvdata(pdev);
4658 adapter_t *adapter = (adapter_t *)host->hostdata;
4659
4660 __megaraid_shutdown(adapter);
4661 }
4662
4663 static struct pci_device_id megaraid_pci_tbl[] = {
4664 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4665 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4666 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4667 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4668 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4669 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4670 {0,}
4671 };
4672 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4673
4674 static struct pci_driver megaraid_pci_driver = {
4675 .name = "megaraid_legacy",
4676 .id_table = megaraid_pci_tbl,
4677 .probe = megaraid_probe_one,
4678 .remove = megaraid_remove_one,
4679 .shutdown = megaraid_shutdown,
4680 };
4681
4682 static int __init megaraid_init(void)
4683 {
4684 int error;
4685
4686 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4687 max_cmd_per_lun = MAX_CMD_PER_LUN;
4688 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4689 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4690
4691 #ifdef CONFIG_PROC_FS
4692 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4693 if (!mega_proc_dir_entry) {
4694 printk(KERN_WARNING
4695 "megaraid: failed to create megaraid root\n");
4696 }
4697 #endif
4698 error = pci_register_driver(&megaraid_pci_driver);
4699 if (error) {
4700 #ifdef CONFIG_PROC_FS
4701 remove_proc_entry("megaraid", NULL);
4702 #endif
4703 return error;
4704 }
4705
4706 /*
4707 * Register the driver as a character device, for applications
4708 * to access it for ioctls.
4709 * First argument (major) to register_chrdev implies a dynamic
4710 * major number allocation.
4711 */
4712 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4713 if (!major) {
4714 printk(KERN_WARNING
4715 "megaraid: failed to register char device\n");
4716 }
4717
4718 return 0;
4719 }
4720
4721 static void __exit megaraid_exit(void)
4722 {
4723 /*
4724 * Unregister the character device interface to the driver.
4725 */
4726 unregister_chrdev(major, "megadev_legacy");
4727
4728 pci_unregister_driver(&megaraid_pci_driver);
4729
4730 #ifdef CONFIG_PROC_FS
4731 remove_proc_entry("megaraid", NULL);
4732 #endif
4733 }
4734
4735 module_init(megaraid_init);
4736 module_exit(megaraid_exit);
4737
4738 /* vi: set ts=8 sw=8 tw=78: */
Linux kernel - Deliverables
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