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