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[PATCH] W1: w1_netlink: New init/fini netlink callbacks.
[linux-2.6/verdex.git] / drivers / scsi / megaraid.c
blob6f308ebe3e797857d02baae2679c96db8fd8bfbd
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright © 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 : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com>
21 *
22 * Description: Linux device driver for LSI Logic MegaRAID controller
23 *
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
25 * 518, 520, 531, 532
26 *
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the mailing list
29 * linux-scsi@vger.kernel.org .
30 *
31 */
32
33 #include <linux/mm.h>
34 #include <linux/fs.h>
35 #include <linux/blkdev.h>
36 #include <asm/uaccess.h>
37 #include <asm/io.h>
38 #include <linux/completion.h>
39 #include <linux/delay.h>
40 #include <linux/proc_fs.h>
41 #include <linux/reboot.h>
42 #include <linux/module.h>
43 #include <linux/list.h>
44 #include <linux/interrupt.h>
45 #include <linux/pci.h>
46 #include <linux/init.h>
47 #include <scsi/scsicam.h>
48
49 #include "scsi.h"
50 #include <scsi/scsi_host.h>
51
52 #include "megaraid.h"
53
54 #define MEGARAID_MODULE_VERSION "2.00.3"
55
56 MODULE_AUTHOR ("LSI Logic Corporation");
57 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
58 MODULE_LICENSE ("GPL");
59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
60
61 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
62 module_param(max_cmd_per_lun, uint, 0);
63 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)");
64
65 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
66 module_param(max_sectors_per_io, ushort, 0);
67 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
68
69
70 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
71 module_param(max_mbox_busy_wait, ushort, 0);
72 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
73
74 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
75 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
76 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
77 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
78
79 /*
80 * Global variables
81 */
82
83 static int hba_count;
84 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
85 static struct proc_dir_entry *mega_proc_dir_entry;
86
87 /* For controller re-ordering */
88 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
89
90 /*
91 * The File Operations structure for the serial/ioctl interface of the driver
92 */
93 static struct file_operations megadev_fops = {
94 .owner = THIS_MODULE,
95 .ioctl = megadev_ioctl,
96 .open = megadev_open,
97 };
98
99 /*
100 * Array to structures for storing the information about the controllers. This
101 * information is sent to the user level applications, when they do an ioctl
102 * for this information.
103 */
104 static struct mcontroller mcontroller[MAX_CONTROLLERS];
105
106 /* The current driver version */
107 static u32 driver_ver = 0x02000000;
108
109 /* major number used by the device for character interface */
110 static int major;
111
112 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
113
114
115 /*
116 * Debug variable to print some diagnostic messages
117 */
118 static int trace_level;
119
120 /**
121 * mega_setup_mailbox()
122 * @adapter - pointer to our soft state
123 *
124 * Allocates a 8 byte aligned memory for the handshake mailbox.
125 */
126 static int
127 mega_setup_mailbox(adapter_t *adapter)
128 {
129 unsigned long align;
130
131 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
132 sizeof(mbox64_t), &adapter->una_mbox64_dma);
133
134 if( !adapter->una_mbox64 ) return -1;
135
136 adapter->mbox = &adapter->una_mbox64->mbox;
137
138 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
139 (~0UL ^ 0xFUL));
140
141 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
142
143 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
144
145 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
146
147 /*
148 * Register the mailbox if the controller is an io-mapped controller
149 */
150 if( adapter->flag & BOARD_IOMAP ) {
151
152 outb_p(adapter->mbox_dma & 0xFF,
153 adapter->host->io_port + MBOX_PORT0);
154
155 outb_p((adapter->mbox_dma >> 8) & 0xFF,
156 adapter->host->io_port + MBOX_PORT1);
157
158 outb_p((adapter->mbox_dma >> 16) & 0xFF,
159 adapter->host->io_port + MBOX_PORT2);
160
161 outb_p((adapter->mbox_dma >> 24) & 0xFF,
162 adapter->host->io_port + MBOX_PORT3);
163
164 outb_p(ENABLE_MBOX_BYTE,
165 adapter->host->io_port + ENABLE_MBOX_REGION);
166
167 irq_ack(adapter);
168
169 irq_enable(adapter);
170 }
171
172 return 0;
173 }
174
175
176 /*
177 * mega_query_adapter()
178 * @adapter - pointer to our soft state
179 *
180 * Issue the adapter inquiry commands to the controller and find out
181 * information and parameter about the devices attached
182 */
183 static int
184 mega_query_adapter(adapter_t *adapter)
185 {
186 dma_addr_t prod_info_dma_handle;
187 mega_inquiry3 *inquiry3;
188 u8 raw_mbox[sizeof(struct mbox_out)];
189 mbox_t *mbox;
190 int retval;
191
192 /* Initialize adapter inquiry mailbox */
193
194 mbox = (mbox_t *)raw_mbox;
195
196 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
197 memset(&mbox->m_out, 0, sizeof(raw_mbox));
198
199 /*
200 * Try to issue Inquiry3 command
201 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
202 * update enquiry3 structure
203 */
204 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
205
206 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
207
208 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
209 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
210 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
211
212 /* Issue a blocking command to the card */
213 if ((retval = issue_scb_block(adapter, raw_mbox))) {
214 /* the adapter does not support 40ld */
215
216 mraid_ext_inquiry *ext_inq;
217 mraid_inquiry *inq;
218 dma_addr_t dma_handle;
219
220 ext_inq = pci_alloc_consistent(adapter->dev,
221 sizeof(mraid_ext_inquiry), &dma_handle);
222
223 if( ext_inq == NULL ) return -1;
224
225 inq = &ext_inq->raid_inq;
226
227 mbox->m_out.xferaddr = (u32)dma_handle;
228
229 /*issue old 0x04 command to adapter */
230 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
231
232 issue_scb_block(adapter, raw_mbox);
233
234 /*
235 * update Enquiry3 and ProductInfo structures with
236 * mraid_inquiry structure
237 */
238 mega_8_to_40ld(inq, inquiry3,
239 (mega_product_info *)&adapter->product_info);
240
241 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
242 ext_inq, dma_handle);
243
244 } else { /*adapter supports 40ld */
245 adapter->flag |= BOARD_40LD;
246
247 /*
248 * get product_info, which is static information and will be
249 * unchanged
250 */
251 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
252 &adapter->product_info,
253 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
254
255 mbox->m_out.xferaddr = prod_info_dma_handle;
256
257 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
258 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
259
260 if ((retval = issue_scb_block(adapter, raw_mbox)))
261 printk(KERN_WARNING
262 "megaraid: Product_info cmd failed with error: %d\n",
263 retval);
264
265 pci_unmap_single(adapter->dev, prod_info_dma_handle,
266 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
267 }
268
269
270 /*
271 * kernel scans the channels from 0 to <= max_channel
272 */
273 adapter->host->max_channel =
274 adapter->product_info.nchannels + NVIRT_CHAN -1;
275
276 adapter->host->max_id = 16; /* max targets per channel */
277
278 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
279
280 adapter->host->cmd_per_lun = max_cmd_per_lun;
281
282 adapter->numldrv = inquiry3->num_ldrv;
283
284 adapter->max_cmds = adapter->product_info.max_commands;
285
286 if(adapter->max_cmds > MAX_COMMANDS)
287 adapter->max_cmds = MAX_COMMANDS;
288
289 adapter->host->can_queue = adapter->max_cmds - 1;
290
291 /*
292 * Get the maximum number of scatter-gather elements supported by this
293 * firmware
294 */
295 mega_get_max_sgl(adapter);
296
297 adapter->host->sg_tablesize = adapter->sglen;
298
299
300 /* use HP firmware and bios version encoding */
301 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
302 sprintf (adapter->fw_version, "%c%d%d.%d%d",
303 adapter->product_info.fw_version[2],
304 adapter->product_info.fw_version[1] >> 8,
305 adapter->product_info.fw_version[1] & 0x0f,
306 adapter->product_info.fw_version[0] >> 8,
307 adapter->product_info.fw_version[0] & 0x0f);
308 sprintf (adapter->bios_version, "%c%d%d.%d%d",
309 adapter->product_info.bios_version[2],
310 adapter->product_info.bios_version[1] >> 8,
311 adapter->product_info.bios_version[1] & 0x0f,
312 adapter->product_info.bios_version[0] >> 8,
313 adapter->product_info.bios_version[0] & 0x0f);
314 } else {
315 memcpy(adapter->fw_version,
316 (char *)adapter->product_info.fw_version, 4);
317 adapter->fw_version[4] = 0;
318
319 memcpy(adapter->bios_version,
320 (char *)adapter->product_info.bios_version, 4);
321
322 adapter->bios_version[4] = 0;
323 }
324
325 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
326 adapter->fw_version, adapter->bios_version, adapter->numldrv);
327
328 /*
329 * Do we support extended (>10 bytes) cdbs
330 */
331 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
332 if (adapter->support_ext_cdb)
333 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
334
335
336 return 0;
337 }
338
339 /**
340 * mega_runpendq()
341 * @adapter - pointer to our soft state
342 *
343 * Runs through the list of pending requests.
344 */
345 static inline void
346 mega_runpendq(adapter_t *adapter)
347 {
348 if(!list_empty(&adapter->pending_list))
349 __mega_runpendq(adapter);
350 }
351
352 /*
353 * megaraid_queue()
354 * @scmd - Issue this scsi command
355 * @done - the callback hook into the scsi mid-layer
356 *
357 * The command queuing entry point for the mid-layer.
358 */
359 static int
360 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
361 {
362 adapter_t *adapter;
363 scb_t *scb;
364 int busy=0;
365
366 adapter = (adapter_t *)scmd->device->host->hostdata;
367
368 scmd->scsi_done = done;
369
370
371 /*
372 * Allocate and build a SCB request
373 * busy flag will be set if mega_build_cmd() command could not
374 * allocate scb. We will return non-zero status in that case.
375 * NOTE: scb can be null even though certain commands completed
376 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
377 * return 0 in that case.
378 */
379
380 scb = mega_build_cmd(adapter, scmd, &busy);
381
382 if(scb) {
383 scb->state |= SCB_PENDQ;
384 list_add_tail(&scb->list, &adapter->pending_list);
385
386 /*
387 * Check if the HBA is in quiescent state, e.g., during a
388 * delete logical drive opertion. If it is, don't run
389 * the pending_list.
390 */
391 if(atomic_read(&adapter->quiescent) == 0) {
392 mega_runpendq(adapter);
393 }
394 return 0;
395 }
396
397 return busy;
398 }
399
400 /**
401 * mega_allocate_scb()
402 * @adapter - pointer to our soft state
403 * @cmd - scsi command from the mid-layer
404 *
405 * Allocate a SCB structure. This is the central structure for controller
406 * commands.
407 */
408 static inline scb_t *
409 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
410 {
411 struct list_head *head = &adapter->free_list;
412 scb_t *scb;
413
414 /* Unlink command from Free List */
415 if( !list_empty(head) ) {
416
417 scb = list_entry(head->next, scb_t, list);
418
419 list_del_init(head->next);
420
421 scb->state = SCB_ACTIVE;
422 scb->cmd = cmd;
423 scb->dma_type = MEGA_DMA_TYPE_NONE;
424
425 return scb;
426 }
427
428 return NULL;
429 }
430
431 /**
432 * mega_get_ldrv_num()
433 * @adapter - pointer to our soft state
434 * @cmd - scsi mid layer command
435 * @channel - channel on the controller
436 *
437 * Calculate the logical drive number based on the information in scsi command
438 * and the channel number.
439 */
440 static inline int
441 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
442 {
443 int tgt;
444 int ldrv_num;
445
446 tgt = cmd->device->id;
447
448 if ( tgt > adapter->this_id )
449 tgt--; /* we do not get inquires for initiator id */
450
451 ldrv_num = (channel * 15) + tgt;
452
453
454 /*
455 * If we have a logical drive with boot enabled, project it first
456 */
457 if( adapter->boot_ldrv_enabled ) {
458 if( ldrv_num == 0 ) {
459 ldrv_num = adapter->boot_ldrv;
460 }
461 else {
462 if( ldrv_num <= adapter->boot_ldrv ) {
463 ldrv_num--;
464 }
465 }
466 }
467
468 /*
469 * If "delete logical drive" feature is enabled on this controller.
470 * Do only if at least one delete logical drive operation was done.
471 *
472 * Also, after logical drive deletion, instead of logical drive number,
473 * the value returned should be 0x80+logical drive id.
474 *
475 * These is valid only for IO commands.
476 */
477
478 if (adapter->support_random_del && adapter->read_ldidmap )
479 switch (cmd->cmnd[0]) {
480 case READ_6: /* fall through */
481 case WRITE_6: /* fall through */
482 case READ_10: /* fall through */
483 case WRITE_10:
484 ldrv_num += 0x80;
485 }
486
487 return ldrv_num;
488 }
489
490 /**
491 * mega_build_cmd()
492 * @adapter - pointer to our soft state
493 * @cmd - Prepare using this scsi command
494 * @busy - busy flag if no resources
495 *
496 * Prepares a command and scatter gather list for the controller. This routine
497 * also finds out if the commands is intended for a logical drive or a
498 * physical device and prepares the controller command accordingly.
499 *
500 * We also re-order the logical drives and physical devices based on their
501 * boot settings.
502 */
503 static scb_t *
504 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
505 {
506 mega_ext_passthru *epthru;
507 mega_passthru *pthru;
508 scb_t *scb;
509 mbox_t *mbox;
510 long seg;
511 char islogical;
512 int max_ldrv_num;
513 int channel = 0;
514 int target = 0;
515 int ldrv_num = 0; /* logical drive number */
516
517
518 /*
519 * filter the internal and ioctl commands
520 */
521 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
522 return cmd->buffer;
523 }
524
525
526 /*
527 * We know what channels our logical drives are on - mega_find_card()
528 */
529 islogical = adapter->logdrv_chan[cmd->device->channel];
530
531 /*
532 * The theory: If physical drive is chosen for boot, all the physical
533 * devices are exported before the logical drives, otherwise physical
534 * devices are pushed after logical drives, in which case - Kernel sees
535 * the physical devices on virtual channel which is obviously converted
536 * to actual channel on the HBA.
537 */
538 if( adapter->boot_pdrv_enabled ) {
539 if( islogical ) {
540 /* logical channel */
541 channel = cmd->device->channel -
542 adapter->product_info.nchannels;
543 }
544 else {
545 /* this is physical channel */
546 channel = cmd->device->channel;
547 target = cmd->device->id;
548
549 /*
550 * boot from a physical disk, that disk needs to be
551 * exposed first IF both the channels are SCSI, then
552 * booting from the second channel is not allowed.
553 */
554 if( target == 0 ) {
555 target = adapter->boot_pdrv_tgt;
556 }
557 else if( target == adapter->boot_pdrv_tgt ) {
558 target = 0;
559 }
560 }
561 }
562 else {
563 if( islogical ) {
564 /* this is the logical channel */
565 channel = cmd->device->channel;
566 }
567 else {
568 /* physical channel */
569 channel = cmd->device->channel - NVIRT_CHAN;
570 target = cmd->device->id;
571 }
572 }
573
574
575 if(islogical) {
576
577 /* have just LUN 0 for each target on virtual channels */
578 if (cmd->device->lun) {
579 cmd->result = (DID_BAD_TARGET << 16);
580 cmd->scsi_done(cmd);
581 return NULL;
582 }
583
584 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
585
586
587 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
588 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
589
590 /*
591 * max_ldrv_num increases by 0x80 if some logical drive was
592 * deleted.
593 */
594 if(adapter->read_ldidmap)
595 max_ldrv_num += 0x80;
596
597 if(ldrv_num > max_ldrv_num ) {
598 cmd->result = (DID_BAD_TARGET << 16);
599 cmd->scsi_done(cmd);
600 return NULL;
601 }
602
603 }
604 else {
605 if( cmd->device->lun > 7) {
606 /*
607 * Do not support lun >7 for physically accessed
608 * devices
609 */
610 cmd->result = (DID_BAD_TARGET << 16);
611 cmd->scsi_done(cmd);
612 return NULL;
613 }
614 }
615
616 /*
617 *
618 * Logical drive commands
619 *
620 */
621 if(islogical) {
622 switch (cmd->cmnd[0]) {
623 case TEST_UNIT_READY:
624 memset(cmd->request_buffer, 0, cmd->request_bufflen);
625
626 #if MEGA_HAVE_CLUSTERING
627 /*
628 * Do we support clustering and is the support enabled
629 * If no, return success always
630 */
631 if( !adapter->has_cluster ) {
632 cmd->result = (DID_OK << 16);
633 cmd->scsi_done(cmd);
634 return NULL;
635 }
636
637 if(!(scb = mega_allocate_scb(adapter, cmd))) {
638 *busy = 1;
639 return NULL;
640 }
641
642 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
643 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
644 scb->raw_mbox[3] = ldrv_num;
645
646 scb->dma_direction = PCI_DMA_NONE;
647
648 return scb;
649 #else
650 cmd->result = (DID_OK << 16);
651 cmd->scsi_done(cmd);
652 return NULL;
653 #endif
654
655 case MODE_SENSE:
656 memset(cmd->request_buffer, 0, cmd->cmnd[4]);
657 cmd->result = (DID_OK << 16);
658 cmd->scsi_done(cmd);
659 return NULL;
660
661 case READ_CAPACITY:
662 case INQUIRY:
663
664 if(!(adapter->flag & (1L << cmd->device->channel))) {
665
666 printk(KERN_NOTICE
667 "scsi%d: scanning scsi channel %d ",
668 adapter->host->host_no,
669 cmd->device->channel);
670 printk("for logical drives.\n");
671
672 adapter->flag |= (1L << cmd->device->channel);
673 }
674
675 /* Allocate a SCB and initialize passthru */
676 if(!(scb = mega_allocate_scb(adapter, cmd))) {
677 *busy = 1;
678 return NULL;
679 }
680 pthru = scb->pthru;
681
682 mbox = (mbox_t *)scb->raw_mbox;
683 memset(mbox, 0, sizeof(scb->raw_mbox));
684 memset(pthru, 0, sizeof(mega_passthru));
685
686 pthru->timeout = 0;
687 pthru->ars = 1;
688 pthru->reqsenselen = 14;
689 pthru->islogical = 1;
690 pthru->logdrv = ldrv_num;
691 pthru->cdblen = cmd->cmd_len;
692 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
693
694 if( adapter->has_64bit_addr ) {
695 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
696 }
697 else {
698 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
699 }
700
701 scb->dma_direction = PCI_DMA_FROMDEVICE;
702
703 pthru->numsgelements = mega_build_sglist(adapter, scb,
704 &pthru->dataxferaddr, &pthru->dataxferlen);
705
706 mbox->m_out.xferaddr = scb->pthru_dma_addr;
707
708 return scb;
709
710 case READ_6:
711 case WRITE_6:
712 case READ_10:
713 case WRITE_10:
714 case READ_12:
715 case WRITE_12:
716
717 /* Allocate a SCB and initialize mailbox */
718 if(!(scb = mega_allocate_scb(adapter, cmd))) {
719 *busy = 1;
720 return NULL;
721 }
722 mbox = (mbox_t *)scb->raw_mbox;
723
724 memset(mbox, 0, sizeof(scb->raw_mbox));
725 mbox->m_out.logdrv = ldrv_num;
726
727 /*
728 * A little hack: 2nd bit is zero for all scsi read
729 * commands and is set for all scsi write commands
730 */
731 if( adapter->has_64bit_addr ) {
732 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
733 MEGA_MBOXCMD_LWRITE64:
734 MEGA_MBOXCMD_LREAD64 ;
735 }
736 else {
737 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
738 MEGA_MBOXCMD_LWRITE:
739 MEGA_MBOXCMD_LREAD ;
740 }
741
742 /*
743 * 6-byte READ(0x08) or WRITE(0x0A) cdb
744 */
745 if( cmd->cmd_len == 6 ) {
746 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
747 mbox->m_out.lba =
748 ((u32)cmd->cmnd[1] << 16) |
749 ((u32)cmd->cmnd[2] << 8) |
750 (u32)cmd->cmnd[3];
751
752 mbox->m_out.lba &= 0x1FFFFF;
753
754 #if MEGA_HAVE_STATS
755 /*
756 * Take modulo 0x80, since the logical drive
757 * number increases by 0x80 when a logical
758 * drive was deleted
759 */
760 if (*cmd->cmnd == READ_6) {
761 adapter->nreads[ldrv_num%0x80]++;
762 adapter->nreadblocks[ldrv_num%0x80] +=
763 mbox->m_out.numsectors;
764 } else {
765 adapter->nwrites[ldrv_num%0x80]++;
766 adapter->nwriteblocks[ldrv_num%0x80] +=
767 mbox->m_out.numsectors;
768 }
769 #endif
770 }
771
772 /*
773 * 10-byte READ(0x28) or WRITE(0x2A) cdb
774 */
775 if( cmd->cmd_len == 10 ) {
776 mbox->m_out.numsectors =
777 (u32)cmd->cmnd[8] |
778 ((u32)cmd->cmnd[7] << 8);
779 mbox->m_out.lba =
780 ((u32)cmd->cmnd[2] << 24) |
781 ((u32)cmd->cmnd[3] << 16) |
782 ((u32)cmd->cmnd[4] << 8) |
783 (u32)cmd->cmnd[5];
784
785 #if MEGA_HAVE_STATS
786 if (*cmd->cmnd == READ_10) {
787 adapter->nreads[ldrv_num%0x80]++;
788 adapter->nreadblocks[ldrv_num%0x80] +=
789 mbox->m_out.numsectors;
790 } else {
791 adapter->nwrites[ldrv_num%0x80]++;
792 adapter->nwriteblocks[ldrv_num%0x80] +=
793 mbox->m_out.numsectors;
794 }
795 #endif
796 }
797
798 /*
799 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
800 */
801 if( cmd->cmd_len == 12 ) {
802 mbox->m_out.lba =
803 ((u32)cmd->cmnd[2] << 24) |
804 ((u32)cmd->cmnd[3] << 16) |
805 ((u32)cmd->cmnd[4] << 8) |
806 (u32)cmd->cmnd[5];
807
808 mbox->m_out.numsectors =
809 ((u32)cmd->cmnd[6] << 24) |
810 ((u32)cmd->cmnd[7] << 16) |
811 ((u32)cmd->cmnd[8] << 8) |
812 (u32)cmd->cmnd[9];
813
814 #if MEGA_HAVE_STATS
815 if (*cmd->cmnd == READ_12) {
816 adapter->nreads[ldrv_num%0x80]++;
817 adapter->nreadblocks[ldrv_num%0x80] +=
818 mbox->m_out.numsectors;
819 } else {
820 adapter->nwrites[ldrv_num%0x80]++;
821 adapter->nwriteblocks[ldrv_num%0x80] +=
822 mbox->m_out.numsectors;
823 }
824 #endif
825 }
826
827 /*
828 * If it is a read command
829 */
830 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
831 scb->dma_direction = PCI_DMA_FROMDEVICE;
832 }
833 else {
834 scb->dma_direction = PCI_DMA_TODEVICE;
835 }
836
837 /* Calculate Scatter-Gather info */
838 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
839 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
840
841 return scb;
842
843 #if MEGA_HAVE_CLUSTERING
844 case RESERVE: /* Fall through */
845 case RELEASE:
846
847 /*
848 * Do we support clustering and is the support enabled
849 */
850 if( ! adapter->has_cluster ) {
851
852 cmd->result = (DID_BAD_TARGET << 16);
853 cmd->scsi_done(cmd);
854 return NULL;
855 }
856
857 /* Allocate a SCB and initialize mailbox */
858 if(!(scb = mega_allocate_scb(adapter, cmd))) {
859 *busy = 1;
860 return NULL;
861 }
862
863 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
864 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
865 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
866
867 scb->raw_mbox[3] = ldrv_num;
868
869 scb->dma_direction = PCI_DMA_NONE;
870
871 return scb;
872 #endif
873
874 default:
875 cmd->result = (DID_BAD_TARGET << 16);
876 cmd->scsi_done(cmd);
877 return NULL;
878 }
879 }
880
881 /*
882 * Passthru drive commands
883 */
884 else {
885 /* Allocate a SCB and initialize passthru */
886 if(!(scb = mega_allocate_scb(adapter, cmd))) {
887 *busy = 1;
888 return NULL;
889 }
890
891 mbox = (mbox_t *)scb->raw_mbox;
892 memset(mbox, 0, sizeof(scb->raw_mbox));
893
894 if( adapter->support_ext_cdb ) {
895
896 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
897 channel, target);
898
899 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
900
901 mbox->m_out.xferaddr = scb->epthru_dma_addr;
902
903 }
904 else {
905
906 pthru = mega_prepare_passthru(adapter, scb, cmd,
907 channel, target);
908
909 /* Initialize mailbox */
910 if( adapter->has_64bit_addr ) {
911 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
912 }
913 else {
914 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
915 }
916
917 mbox->m_out.xferaddr = scb->pthru_dma_addr;
918
919 }
920 return scb;
921 }
922 return NULL;
923 }
924
925
926 /**
927 * mega_prepare_passthru()
928 * @adapter - pointer to our soft state
929 * @scb - our scsi control block
930 * @cmd - scsi command from the mid-layer
931 * @channel - actual channel on the controller
932 * @target - actual id on the controller.
933 *
934 * prepare a command for the scsi physical devices.
935 */
936 static mega_passthru *
937 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
938 int channel, int target)
939 {
940 mega_passthru *pthru;
941
942 pthru = scb->pthru;
943 memset(pthru, 0, sizeof (mega_passthru));
944
945 /* 0=6sec/1=60sec/2=10min/3=3hrs */
946 pthru->timeout = 2;
947
948 pthru->ars = 1;
949 pthru->reqsenselen = 14;
950 pthru->islogical = 0;
951
952 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
953
954 pthru->target = (adapter->flag & BOARD_40LD) ?
955 (channel << 4) | target : target;
956
957 pthru->cdblen = cmd->cmd_len;
958 pthru->logdrv = cmd->device->lun;
959
960 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
961
962 /* Not sure about the direction */
963 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
964
965 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
966 switch (cmd->cmnd[0]) {
967 case INQUIRY:
968 case READ_CAPACITY:
969 if(!(adapter->flag & (1L << cmd->device->channel))) {
970
971 printk(KERN_NOTICE
972 "scsi%d: scanning scsi channel %d [P%d] ",
973 adapter->host->host_no,
974 cmd->device->channel, channel);
975 printk("for physical devices.\n");
976
977 adapter->flag |= (1L << cmd->device->channel);
978 }
979 /* Fall through */
980 default:
981 pthru->numsgelements = mega_build_sglist(adapter, scb,
982 &pthru->dataxferaddr, &pthru->dataxferlen);
983 break;
984 }
985 return pthru;
986 }
987
988
989 /**
990 * mega_prepare_extpassthru()
991 * @adapter - pointer to our soft state
992 * @scb - our scsi control block
993 * @cmd - scsi command from the mid-layer
994 * @channel - actual channel on the controller
995 * @target - actual id on the controller.
996 *
997 * prepare a command for the scsi physical devices. This rountine prepares
998 * commands for devices which can take extended CDBs (>10 bytes)
999 */
1000 static mega_ext_passthru *
1001 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1002 int channel, int target)
1003 {
1004 mega_ext_passthru *epthru;
1005
1006 epthru = scb->epthru;
1007 memset(epthru, 0, sizeof(mega_ext_passthru));
1008
1009 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1010 epthru->timeout = 2;
1011
1012 epthru->ars = 1;
1013 epthru->reqsenselen = 14;
1014 epthru->islogical = 0;
1015
1016 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1017 epthru->target = (adapter->flag & BOARD_40LD) ?
1018 (channel << 4) | target : target;
1019
1020 epthru->cdblen = cmd->cmd_len;
1021 epthru->logdrv = cmd->device->lun;
1022
1023 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1024
1025 /* Not sure about the direction */
1026 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1027
1028 switch(cmd->cmnd[0]) {
1029 case INQUIRY:
1030 case READ_CAPACITY:
1031 if(!(adapter->flag & (1L << cmd->device->channel))) {
1032
1033 printk(KERN_NOTICE
1034 "scsi%d: scanning scsi channel %d [P%d] ",
1035 adapter->host->host_no,
1036 cmd->device->channel, channel);
1037 printk("for physical devices.\n");
1038
1039 adapter->flag |= (1L << cmd->device->channel);
1040 }
1041 /* Fall through */
1042 default:
1043 epthru->numsgelements = mega_build_sglist(adapter, scb,
1044 &epthru->dataxferaddr, &epthru->dataxferlen);
1045 break;
1046 }
1047
1048 return epthru;
1049 }
1050
1051 static void
1052 __mega_runpendq(adapter_t *adapter)
1053 {
1054 scb_t *scb;
1055 struct list_head *pos, *next;
1056
1057 /* Issue any pending commands to the card */
1058 list_for_each_safe(pos, next, &adapter->pending_list) {
1059
1060 scb = list_entry(pos, scb_t, list);
1061
1062 if( !(scb->state & SCB_ISSUED) ) {
1063
1064 if( issue_scb(adapter, scb) != 0 )
1065 return;
1066 }
1067 }
1068
1069 return;
1070 }
1071
1072
1073 /**
1074 * issue_scb()
1075 * @adapter - pointer to our soft state
1076 * @scb - scsi control block
1077 *
1078 * Post a command to the card if the mailbox is available, otherwise return
1079 * busy. We also take the scb from the pending list if the mailbox is
1080 * available.
1081 */
1082 static int
1083 issue_scb(adapter_t *adapter, scb_t *scb)
1084 {
1085 volatile mbox64_t *mbox64 = adapter->mbox64;
1086 volatile mbox_t *mbox = adapter->mbox;
1087 unsigned int i = 0;
1088
1089 if(unlikely(mbox->m_in.busy)) {
1090 do {
1091 udelay(1);
1092 i++;
1093 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1094
1095 if(mbox->m_in.busy) return -1;
1096 }
1097
1098 /* Copy mailbox data into host structure */
1099 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1100 sizeof(struct mbox_out));
1101
1102 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1103 mbox->m_in.busy = 1; /* Set busy */
1104
1105
1106 /*
1107 * Increment the pending queue counter
1108 */
1109 atomic_inc(&adapter->pend_cmds);
1110
1111 switch (mbox->m_out.cmd) {
1112 case MEGA_MBOXCMD_LREAD64:
1113 case MEGA_MBOXCMD_LWRITE64:
1114 case MEGA_MBOXCMD_PASSTHRU64:
1115 case MEGA_MBOXCMD_EXTPTHRU:
1116 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1117 mbox64->xfer_segment_hi = 0;
1118 mbox->m_out.xferaddr = 0xFFFFFFFF;
1119 break;
1120 default:
1121 mbox64->xfer_segment_lo = 0;
1122 mbox64->xfer_segment_hi = 0;
1123 }
1124
1125 /*
1126 * post the command
1127 */
1128 scb->state |= SCB_ISSUED;
1129
1130 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1131 mbox->m_in.poll = 0;
1132 mbox->m_in.ack = 0;
1133 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1134 }
1135 else {
1136 irq_enable(adapter);
1137 issue_command(adapter);
1138 }
1139
1140 return 0;
1141 }
1142
1143 /*
1144 * Wait until the controller's mailbox is available
1145 */
1146 static inline int
1147 mega_busywait_mbox (adapter_t *adapter)
1148 {
1149 if (adapter->mbox->m_in.busy)
1150 return __mega_busywait_mbox(adapter);
1151 return 0;
1152 }
1153
1154 /**
1155 * issue_scb_block()
1156 * @adapter - pointer to our soft state
1157 * @raw_mbox - the mailbox
1158 *
1159 * Issue a scb in synchronous and non-interrupt mode
1160 */
1161 static int
1162 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1163 {
1164 volatile mbox64_t *mbox64 = adapter->mbox64;
1165 volatile mbox_t *mbox = adapter->mbox;
1166 u8 byte;
1167
1168 /* Wait until mailbox is free */
1169 if(mega_busywait_mbox (adapter))
1170 goto bug_blocked_mailbox;
1171
1172 /* Copy mailbox data into host structure */
1173 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1174 mbox->m_out.cmdid = 0xFE;
1175 mbox->m_in.busy = 1;
1176
1177 switch (raw_mbox[0]) {
1178 case MEGA_MBOXCMD_LREAD64:
1179 case MEGA_MBOXCMD_LWRITE64:
1180 case MEGA_MBOXCMD_PASSTHRU64:
1181 case MEGA_MBOXCMD_EXTPTHRU:
1182 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1183 mbox64->xfer_segment_hi = 0;
1184 mbox->m_out.xferaddr = 0xFFFFFFFF;
1185 break;
1186 default:
1187 mbox64->xfer_segment_lo = 0;
1188 mbox64->xfer_segment_hi = 0;
1189 }
1190
1191 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1192 mbox->m_in.poll = 0;
1193 mbox->m_in.ack = 0;
1194 mbox->m_in.numstatus = 0xFF;
1195 mbox->m_in.status = 0xFF;
1196 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1197
1198 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1199 cpu_relax();
1200
1201 mbox->m_in.numstatus = 0xFF;
1202
1203 while( (volatile u8)mbox->m_in.poll != 0x77 )
1204 cpu_relax();
1205
1206 mbox->m_in.poll = 0;
1207 mbox->m_in.ack = 0x77;
1208
1209 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1210
1211 while(RDINDOOR(adapter) & 0x2)
1212 cpu_relax();
1213 }
1214 else {
1215 irq_disable(adapter);
1216 issue_command(adapter);
1217
1218 while (!((byte = irq_state(adapter)) & INTR_VALID))
1219 cpu_relax();
1220
1221 set_irq_state(adapter, byte);
1222 irq_enable(adapter);
1223 irq_ack(adapter);
1224 }
1225
1226 return mbox->m_in.status;
1227
1228 bug_blocked_mailbox:
1229 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1230 udelay (1000);
1231 return -1;
1232 }
1233
1234
1235 /**
1236 * megaraid_isr_iomapped()
1237 * @irq - irq
1238 * @devp - pointer to our soft state
1239 * @regs - unused
1240 *
1241 * Interrupt service routine for io-mapped controllers.
1242 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1243 * and service the completed commands.
1244 */
1245 static irqreturn_t
1246 megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1247 {
1248 adapter_t *adapter = devp;
1249 unsigned long flags;
1250 u8 status;
1251 u8 nstatus;
1252 u8 completed[MAX_FIRMWARE_STATUS];
1253 u8 byte;
1254 int handled = 0;
1255
1256
1257 /*
1258 * loop till F/W has more commands for us to complete.
1259 */
1260 spin_lock_irqsave(&adapter->lock, flags);
1261
1262 do {
1263 /* Check if a valid interrupt is pending */
1264 byte = irq_state(adapter);
1265 if( (byte & VALID_INTR_BYTE) == 0 ) {
1266 /*
1267 * No more pending commands
1268 */
1269 goto out_unlock;
1270 }
1271 set_irq_state(adapter, byte);
1272
1273 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1274 == 0xFF)
1275 cpu_relax();
1276 adapter->mbox->m_in.numstatus = 0xFF;
1277
1278 status = adapter->mbox->m_in.status;
1279
1280 /*
1281 * decrement the pending queue counter
1282 */
1283 atomic_sub(nstatus, &adapter->pend_cmds);
1284
1285 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1286 nstatus);
1287
1288 /* Acknowledge interrupt */
1289 irq_ack(adapter);
1290
1291 mega_cmd_done(adapter, completed, nstatus, status);
1292
1293 mega_rundoneq(adapter);
1294
1295 handled = 1;
1296
1297 /* Loop through any pending requests */
1298 if(atomic_read(&adapter->quiescent) == 0) {
1299 mega_runpendq(adapter);
1300 }
1301
1302 } while(1);
1303
1304 out_unlock:
1305
1306 spin_unlock_irqrestore(&adapter->lock, flags);
1307
1308 return IRQ_RETVAL(handled);
1309 }
1310
1311
1312 /**
1313 * megaraid_isr_memmapped()
1314 * @irq - irq
1315 * @devp - pointer to our soft state
1316 * @regs - unused
1317 *
1318 * Interrupt service routine for memory-mapped controllers.
1319 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1320 * and service the completed commands.
1321 */
1322 static irqreturn_t
1323 megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
1324 {
1325 adapter_t *adapter = devp;
1326 unsigned long flags;
1327 u8 status;
1328 u32 dword = 0;
1329 u8 nstatus;
1330 u8 completed[MAX_FIRMWARE_STATUS];
1331 int handled = 0;
1332
1333
1334 /*
1335 * loop till F/W has more commands for us to complete.
1336 */
1337 spin_lock_irqsave(&adapter->lock, flags);
1338
1339 do {
1340 /* Check if a valid interrupt is pending */
1341 dword = RDOUTDOOR(adapter);
1342 if(dword != 0x10001234) {
1343 /*
1344 * No more pending commands
1345 */
1346 goto out_unlock;
1347 }
1348 WROUTDOOR(adapter, 0x10001234);
1349
1350 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1351 == 0xFF) {
1352 cpu_relax();
1353 }
1354 adapter->mbox->m_in.numstatus = 0xFF;
1355
1356 status = adapter->mbox->m_in.status;
1357
1358 /*
1359 * decrement the pending queue counter
1360 */
1361 atomic_sub(nstatus, &adapter->pend_cmds);
1362
1363 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1364 nstatus);
1365
1366 /* Acknowledge interrupt */
1367 WRINDOOR(adapter, 0x2);
1368
1369 handled = 1;
1370
1371 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1372
1373 mega_cmd_done(adapter, completed, nstatus, status);
1374
1375 mega_rundoneq(adapter);
1376
1377 /* Loop through any pending requests */
1378 if(atomic_read(&adapter->quiescent) == 0) {
1379 mega_runpendq(adapter);
1380 }
1381
1382 } while(1);
1383
1384 out_unlock:
1385
1386 spin_unlock_irqrestore(&adapter->lock, flags);
1387
1388 return IRQ_RETVAL(handled);
1389 }
1390 /**
1391 * mega_cmd_done()
1392 * @adapter - pointer to our soft state
1393 * @completed - array of ids of completed commands
1394 * @nstatus - number of completed commands
1395 * @status - status of the last command completed
1396 *
1397 * Complete the comamnds and call the scsi mid-layer callback hooks.
1398 */
1399 static void
1400 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1401 {
1402 mega_ext_passthru *epthru = NULL;
1403 struct scatterlist *sgl;
1404 Scsi_Cmnd *cmd = NULL;
1405 mega_passthru *pthru = NULL;
1406 mbox_t *mbox = NULL;
1407 u8 c;
1408 scb_t *scb;
1409 int islogical;
1410 int cmdid;
1411 int i;
1412
1413 /*
1414 * for all the commands completed, call the mid-layer callback routine
1415 * and free the scb.
1416 */
1417 for( i = 0; i < nstatus; i++ ) {
1418
1419 cmdid = completed[i];
1420
1421 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1422 scb = &adapter->int_scb;
1423 cmd = scb->cmd;
1424 mbox = (mbox_t *)scb->raw_mbox;
1425
1426 /*
1427 * Internal command interface do not fire the extended
1428 * passthru or 64-bit passthru
1429 */
1430 pthru = scb->pthru;
1431
1432 }
1433 else {
1434 scb = &adapter->scb_list[cmdid];
1435
1436 /*
1437 * Make sure f/w has completed a valid command
1438 */
1439 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1440 printk(KERN_CRIT
1441 "megaraid: invalid command ");
1442 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1443 cmdid, scb->state, scb->cmd);
1444
1445 continue;
1446 }
1447
1448 /*
1449 * Was a abort issued for this command
1450 */
1451 if( scb->state & SCB_ABORT ) {
1452
1453 printk(KERN_WARNING
1454 "megaraid: aborted cmd %lx[%x] complete.\n",
1455 scb->cmd->serial_number, scb->idx);
1456
1457 scb->cmd->result = (DID_ABORT << 16);
1458
1459 list_add_tail(SCSI_LIST(scb->cmd),
1460 &adapter->completed_list);
1461
1462 mega_free_scb(adapter, scb);
1463
1464 continue;
1465 }
1466
1467 /*
1468 * Was a reset issued for this command
1469 */
1470 if( scb->state & SCB_RESET ) {
1471
1472 printk(KERN_WARNING
1473 "megaraid: reset cmd %lx[%x] complete.\n",
1474 scb->cmd->serial_number, scb->idx);
1475
1476 scb->cmd->result = (DID_RESET << 16);
1477
1478 list_add_tail(SCSI_LIST(scb->cmd),
1479 &adapter->completed_list);
1480
1481 mega_free_scb (adapter, scb);
1482
1483 continue;
1484 }
1485
1486 cmd = scb->cmd;
1487 pthru = scb->pthru;
1488 epthru = scb->epthru;
1489 mbox = (mbox_t *)scb->raw_mbox;
1490
1491 #if MEGA_HAVE_STATS
1492 {
1493
1494 int logdrv = mbox->m_out.logdrv;
1495
1496 islogical = adapter->logdrv_chan[cmd->channel];
1497 /*
1498 * Maintain an error counter for the logical drive.
1499 * Some application like SNMP agent need such
1500 * statistics
1501 */
1502 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1503 cmd->cmnd[0] == READ_10 ||
1504 cmd->cmnd[0] == READ_12)) {
1505 /*
1506 * Logical drive number increases by 0x80 when
1507 * a logical drive is deleted
1508 */
1509 adapter->rd_errors[logdrv%0x80]++;
1510 }
1511
1512 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1513 cmd->cmnd[0] == WRITE_10 ||
1514 cmd->cmnd[0] == WRITE_12)) {
1515 /*
1516 * Logical drive number increases by 0x80 when
1517 * a logical drive is deleted
1518 */
1519 adapter->wr_errors[logdrv%0x80]++;
1520 }
1521
1522 }
1523 #endif
1524 }
1525
1526 /*
1527 * Do not return the presence of hard disk on the channel so,
1528 * inquiry sent, and returned data==hard disk or removable
1529 * hard disk and not logical, request should return failure! -
1530 * PJ
1531 */
1532 islogical = adapter->logdrv_chan[cmd->device->channel];
1533 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1534
1535 if( cmd->use_sg ) {
1536 sgl = (struct scatterlist *)
1537 cmd->request_buffer;
1538
1539 if( sgl->page ) {
1540 c = *(unsigned char *)
1541 page_address((&sgl[0])->page) +
1542 (&sgl[0])->offset;
1543 }
1544 else {
1545 printk(KERN_WARNING
1546 "megaraid: invalid sg.\n");
1547 c = 0;
1548 }
1549 }
1550 else {
1551 c = *(u8 *)cmd->request_buffer;
1552 }
1553
1554 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1555 ((c & 0x1F ) == TYPE_DISK)) {
1556 status = 0xF0;
1557 }
1558 }
1559
1560 /* clear result; otherwise, success returns corrupt value */
1561 cmd->result = 0;
1562
1563 /* Convert MegaRAID status to Linux error code */
1564 switch (status) {
1565 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1566 cmd->result |= (DID_OK << 16);
1567 break;
1568
1569 case 0x02: /* ERROR_ABORTED, i.e.
1570 SCSI_STATUS_CHECK_CONDITION */
1571
1572 /* set sense_buffer and result fields */
1573 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1574 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1575
1576 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1577 14);
1578
1579 cmd->result = (DRIVER_SENSE << 24) |
1580 (DID_OK << 16) |
1581 (CHECK_CONDITION << 1);
1582 }
1583 else {
1584 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1585
1586 memcpy(cmd->sense_buffer,
1587 epthru->reqsensearea, 14);
1588
1589 cmd->result = (DRIVER_SENSE << 24) |
1590 (DID_OK << 16) |
1591 (CHECK_CONDITION << 1);
1592 } else {
1593 cmd->sense_buffer[0] = 0x70;
1594 cmd->sense_buffer[2] = ABORTED_COMMAND;
1595 cmd->result |= (CHECK_CONDITION << 1);
1596 }
1597 }
1598 break;
1599
1600 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1601 SCSI_STATUS_BUSY */
1602 cmd->result |= (DID_BUS_BUSY << 16) | status;
1603 break;
1604
1605 default:
1606 #if MEGA_HAVE_CLUSTERING
1607 /*
1608 * If TEST_UNIT_READY fails, we know
1609 * MEGA_RESERVATION_STATUS failed
1610 */
1611 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1612 cmd->result |= (DID_ERROR << 16) |
1613 (RESERVATION_CONFLICT << 1);
1614 }
1615 else
1616 /*
1617 * Error code returned is 1 if Reserve or Release
1618 * failed or the input parameter is invalid
1619 */
1620 if( status == 1 &&
1621 (cmd->cmnd[0] == RESERVE ||
1622 cmd->cmnd[0] == RELEASE) ) {
1623
1624 cmd->result |= (DID_ERROR << 16) |
1625 (RESERVATION_CONFLICT << 1);
1626 }
1627 else
1628 #endif
1629 cmd->result |= (DID_BAD_TARGET << 16)|status;
1630 }
1631
1632 /*
1633 * Only free SCBs for the commands coming down from the
1634 * mid-layer, not for which were issued internally
1635 *
1636 * For internal command, restore the status returned by the
1637 * firmware so that user can interpret it.
1638 */
1639 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1640 cmd->result = status;
1641
1642 /*
1643 * Remove the internal command from the pending list
1644 */
1645 list_del_init(&scb->list);
1646 scb->state = SCB_FREE;
1647 }
1648 else {
1649 mega_free_scb(adapter, scb);
1650 }
1651
1652 /* Add Scsi_Command to end of completed queue */
1653 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1654 }
1655 }
1656
1657
1658 /*
1659 * mega_runpendq()
1660 *
1661 * Run through the list of completed requests and finish it
1662 */
1663 static void
1664 mega_rundoneq (adapter_t *adapter)
1665 {
1666 Scsi_Cmnd *cmd;
1667 struct list_head *pos;
1668
1669 list_for_each(pos, &adapter->completed_list) {
1670
1671 Scsi_Pointer* spos = (Scsi_Pointer *)pos;
1672
1673 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1674 cmd->scsi_done(cmd);
1675 }
1676
1677 INIT_LIST_HEAD(&adapter->completed_list);
1678 }
1679
1680
1681 /*
1682 * Free a SCB structure
1683 * Note: We assume the scsi commands associated with this scb is not free yet.
1684 */
1685 static void
1686 mega_free_scb(adapter_t *adapter, scb_t *scb)
1687 {
1688 switch( scb->dma_type ) {
1689
1690 case MEGA_DMA_TYPE_NONE:
1691 break;
1692
1693 case MEGA_BULK_DATA:
1694 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
1695 scb->cmd->request_bufflen, scb->dma_direction);
1696 break;
1697
1698 case MEGA_SGLIST:
1699 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1700 scb->cmd->use_sg, scb->dma_direction);
1701 break;
1702
1703 default:
1704 break;
1705 }
1706
1707 /*
1708 * Remove from the pending list
1709 */
1710 list_del_init(&scb->list);
1711
1712 /* Link the scb back into free list */
1713 scb->state = SCB_FREE;
1714 scb->cmd = NULL;
1715
1716 list_add(&scb->list, &adapter->free_list);
1717 }
1718
1719
1720 static int
1721 __mega_busywait_mbox (adapter_t *adapter)
1722 {
1723 volatile mbox_t *mbox = adapter->mbox;
1724 long counter;
1725
1726 for (counter = 0; counter < 10000; counter++) {
1727 if (!mbox->m_in.busy)
1728 return 0;
1729 udelay(100); yield();
1730 }
1731 return -1; /* give up after 1 second */
1732 }
1733
1734 /*
1735 * Copies data to SGLIST
1736 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1737 */
1738 static int
1739 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1740 {
1741 struct scatterlist *sgl;
1742 struct page *page;
1743 unsigned long offset;
1744 Scsi_Cmnd *cmd;
1745 int sgcnt;
1746 int idx;
1747
1748 cmd = scb->cmd;
1749
1750 /* Scatter-gather not used */
1751 if( !cmd->use_sg ) {
1752
1753 page = virt_to_page(cmd->request_buffer);
1754 offset = offset_in_page(cmd->request_buffer);
1755
1756 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1757 page, offset,
1758 cmd->request_bufflen,
1759 scb->dma_direction);
1760 scb->dma_type = MEGA_BULK_DATA;
1761
1762 /*
1763 * We need to handle special 64-bit commands that need a
1764 * minimum of 1 SG
1765 */
1766 if( adapter->has_64bit_addr ) {
1767 scb->sgl64[0].address = scb->dma_h_bulkdata;
1768 scb->sgl64[0].length = cmd->request_bufflen;
1769 *buf = (u32)scb->sgl_dma_addr;
1770 *len = (u32)cmd->request_bufflen;
1771 return 1;
1772 }
1773 else {
1774 *buf = (u32)scb->dma_h_bulkdata;
1775 *len = (u32)cmd->request_bufflen;
1776 }
1777 return 0;
1778 }
1779
1780 sgl = (struct scatterlist *)cmd->request_buffer;
1781
1782 /*
1783 * Copy Scatter-Gather list info into controller structure.
1784 *
1785 * The number of sg elements returned must not exceed our limit
1786 */
1787 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1788 scb->dma_direction);
1789
1790 scb->dma_type = MEGA_SGLIST;
1791
1792 if( sgcnt > adapter->sglen ) BUG();
1793
1794 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1795
1796 if( adapter->has_64bit_addr ) {
1797 scb->sgl64[idx].address = sg_dma_address(sgl);
1798 scb->sgl64[idx].length = sg_dma_len(sgl);
1799 }
1800 else {
1801 scb->sgl[idx].address = sg_dma_address(sgl);
1802 scb->sgl[idx].length = sg_dma_len(sgl);
1803 }
1804 }
1805
1806 /* Reset pointer and length fields */
1807 *buf = scb->sgl_dma_addr;
1808
1809 /*
1810 * For passthru command, dataxferlen must be set, even for commands
1811 * with a sg list
1812 */
1813 *len = (u32)cmd->request_bufflen;
1814
1815 /* Return count of SG requests */
1816 return sgcnt;
1817 }
1818
1819
1820 /*
1821 * mega_8_to_40ld()
1822 *
1823 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1824 * Enquiry3 structures for later use
1825 */
1826 static void
1827 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1828 mega_product_info *product_info)
1829 {
1830 int i;
1831
1832 product_info->max_commands = inquiry->adapter_info.max_commands;
1833 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1834 product_info->nchannels = inquiry->adapter_info.nchannels;
1835
1836 for (i = 0; i < 4; i++) {
1837 product_info->fw_version[i] =
1838 inquiry->adapter_info.fw_version[i];
1839
1840 product_info->bios_version[i] =
1841 inquiry->adapter_info.bios_version[i];
1842 }
1843 enquiry3->cache_flush_interval =
1844 inquiry->adapter_info.cache_flush_interval;
1845
1846 product_info->dram_size = inquiry->adapter_info.dram_size;
1847
1848 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1849
1850 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1851 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1852 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1853 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1854 }
1855
1856 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1857 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1858 }
1859
1860 static inline void
1861 mega_free_sgl(adapter_t *adapter)
1862 {
1863 scb_t *scb;
1864 int i;
1865
1866 for(i = 0; i < adapter->max_cmds; i++) {
1867
1868 scb = &adapter->scb_list[i];
1869
1870 if( scb->sgl64 ) {
1871 pci_free_consistent(adapter->dev,
1872 sizeof(mega_sgl64) * adapter->sglen,
1873 scb->sgl64,
1874 scb->sgl_dma_addr);
1875
1876 scb->sgl64 = NULL;
1877 }
1878
1879 if( scb->pthru ) {
1880 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1881 scb->pthru, scb->pthru_dma_addr);
1882
1883 scb->pthru = NULL;
1884 }
1885
1886 if( scb->epthru ) {
1887 pci_free_consistent(adapter->dev,
1888 sizeof(mega_ext_passthru),
1889 scb->epthru, scb->epthru_dma_addr);
1890
1891 scb->epthru = NULL;
1892 }
1893
1894 }
1895 }
1896
1897
1898 /*
1899 * Get information about the card/driver
1900 */
1901 const char *
1902 megaraid_info(struct Scsi_Host *host)
1903 {
1904 static char buffer[512];
1905 adapter_t *adapter;
1906
1907 adapter = (adapter_t *)host->hostdata;
1908
1909 sprintf (buffer,
1910 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1911 adapter->fw_version, adapter->product_info.max_commands,
1912 adapter->host->max_id, adapter->host->max_channel,
1913 adapter->host->max_lun);
1914 return buffer;
1915 }
1916
1917 /*
1918 * Abort a previous SCSI request. Only commands on the pending list can be
1919 * aborted. All the commands issued to the F/W must complete.
1920 */
1921 static int
1922 megaraid_abort(Scsi_Cmnd *cmd)
1923 {
1924 adapter_t *adapter;
1925 int rval;
1926
1927 adapter = (adapter_t *)cmd->device->host->hostdata;
1928
1929 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1930
1931 /*
1932 * This is required here to complete any completed requests
1933 * to be communicated over to the mid layer.
1934 */
1935 mega_rundoneq(adapter);
1936
1937 return rval;
1938 }
1939
1940
1941 static int
1942 megaraid_reset(struct scsi_cmnd *cmd)
1943 {
1944 adapter_t *adapter;
1945 megacmd_t mc;
1946 int rval;
1947
1948 adapter = (adapter_t *)cmd->device->host->hostdata;
1949
1950 #if MEGA_HAVE_CLUSTERING
1951 mc.cmd = MEGA_CLUSTER_CMD;
1952 mc.opcode = MEGA_RESET_RESERVATIONS;
1953
1954 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
1955 printk(KERN_WARNING
1956 "megaraid: reservation reset failed.\n");
1957 }
1958 else {
1959 printk(KERN_INFO "megaraid: reservation reset.\n");
1960 }
1961 #endif
1962
1963 spin_lock_irq(&adapter->lock);
1964
1965 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1966
1967 /*
1968 * This is required here to complete any completed requests
1969 * to be communicated over to the mid layer.
1970 */
1971 mega_rundoneq(adapter);
1972 spin_unlock_irq(&adapter->lock);
1973
1974 return rval;
1975 }
1976
1977 /**
1978 * megaraid_abort_and_reset()
1979 * @adapter - megaraid soft state
1980 * @cmd - scsi command to be aborted or reset
1981 * @aor - abort or reset flag
1982 *
1983 * Try to locate the scsi command in the pending queue. If found and is not
1984 * issued to the controller, abort/reset it. Otherwise return failure
1985 */
1986 static int
1987 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1988 {
1989 struct list_head *pos, *next;
1990 scb_t *scb;
1991
1992 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1993 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1994 cmd->cmnd[0], cmd->device->channel,
1995 cmd->device->id, cmd->device->lun);
1996
1997 if(list_empty(&adapter->pending_list))
1998 return FALSE;
1999
2000 list_for_each_safe(pos, next, &adapter->pending_list) {
2001
2002 scb = list_entry(pos, scb_t, list);
2003
2004 if (scb->cmd == cmd) { /* Found command */
2005
2006 scb->state |= aor;
2007
2008 /*
2009 * Check if this command has firmare owenership. If
2010 * yes, we cannot reset this command. Whenever, f/w
2011 * completes this command, we will return appropriate
2012 * status from ISR.
2013 */
2014 if( scb->state & SCB_ISSUED ) {
2015
2016 printk(KERN_WARNING
2017 "megaraid: %s-%lx[%x], fw owner.\n",
2018 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2019 cmd->serial_number, scb->idx);
2020
2021 return FALSE;
2022 }
2023 else {
2024
2025 /*
2026 * Not yet issued! Remove from the pending
2027 * list
2028 */
2029 printk(KERN_WARNING
2030 "megaraid: %s-%lx[%x], driver owner.\n",
2031 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2032 cmd->serial_number, scb->idx);
2033
2034 mega_free_scb(adapter, scb);
2035
2036 if( aor == SCB_ABORT ) {
2037 cmd->result = (DID_ABORT << 16);
2038 }
2039 else {
2040 cmd->result = (DID_RESET << 16);
2041 }
2042
2043 list_add_tail(SCSI_LIST(cmd),
2044 &adapter->completed_list);
2045
2046 return TRUE;
2047 }
2048 }
2049 }
2050
2051 return FALSE;
2052 }
2053
2054 static inline int
2055 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2056 {
2057 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2058
2059 if( *pdev == NULL ) return -1;
2060
2061 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2062
2063 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
2064 kfree(*pdev);
2065 return -1;
2066 }
2067
2068 return 0;
2069 }
2070
2071 static inline void
2072 free_local_pdev(struct pci_dev *pdev)
2073 {
2074 kfree(pdev);
2075 }
2076
2077 /**
2078 * mega_allocate_inquiry()
2079 * @dma_handle - handle returned for dma address
2080 * @pdev - handle to pci device
2081 *
2082 * allocates memory for inquiry structure
2083 */
2084 static inline void *
2085 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2086 {
2087 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2088 }
2089
2090
2091 static inline void
2092 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2093 {
2094 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2095 }
2096
2097
2098 #ifdef CONFIG_PROC_FS
2099 /* Following code handles /proc fs */
2100
2101 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2102 S_IRUSR | S_IFREG, \
2103 controller_proc_dir_entry, \
2104 func, adapter)
2105
2106 /**
2107 * mega_create_proc_entry()
2108 * @index - index in soft state array
2109 * @parent - parent node for this /proc entry
2110 *
2111 * Creates /proc entries for our controllers.
2112 */
2113 static void
2114 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2115 {
2116 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2117 u8 string[64] = { 0 };
2118 adapter_t *adapter = hba_soft_state[index];
2119
2120 sprintf(string, "hba%d", adapter->host->host_no);
2121
2122 controller_proc_dir_entry =
2123 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2124
2125 if(!controller_proc_dir_entry) {
2126 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2127 return;
2128 }
2129 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2130 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2131 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2132 #if MEGA_HAVE_ENH_PROC
2133 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2134 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2135 proc_battery);
2136
2137 /*
2138 * Display each physical drive on its channel
2139 */
2140 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2141 proc_pdrv_ch0);
2142 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2143 proc_pdrv_ch1);
2144 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2145 proc_pdrv_ch2);
2146 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2147 proc_pdrv_ch3);
2148
2149 /*
2150 * Display a set of up to 10 logical drive through each of following
2151 * /proc entries
2152 */
2153 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2154 proc_rdrv_10);
2155 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2156 proc_rdrv_20);
2157 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2158 proc_rdrv_30);
2159 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2160 proc_rdrv_40);
2161 #endif
2162 }
2163
2164
2165 /**
2166 * proc_read_config()
2167 * @page - buffer to write the data in
2168 * @start - where the actual data has been written in page
2169 * @offset - same meaning as the read system call
2170 * @count - same meaning as the read system call
2171 * @eof - set if no more data needs to be returned
2172 * @data - pointer to our soft state
2173 *
2174 * Display configuration information about the controller.
2175 */
2176 static int
2177 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2178 void *data)
2179 {
2180
2181 adapter_t *adapter = (adapter_t *)data;
2182 int len = 0;
2183
2184 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2185
2186 if(adapter->product_info.product_name[0])
2187 len += sprintf(page+len, "%s\n",
2188 adapter->product_info.product_name);
2189
2190 len += sprintf(page+len, "Controller Type: ");
2191
2192 if( adapter->flag & BOARD_MEMMAP ) {
2193 len += sprintf(page+len,
2194 "438/466/467/471/493/518/520/531/532\n");
2195 }
2196 else {
2197 len += sprintf(page+len,
2198 "418/428/434\n");
2199 }
2200
2201 if(adapter->flag & BOARD_40LD) {
2202 len += sprintf(page+len,
2203 "Controller Supports 40 Logical Drives\n");
2204 }
2205
2206 if(adapter->flag & BOARD_64BIT) {
2207 len += sprintf(page+len,
2208 "Controller capable of 64-bit memory addressing\n");
2209 }
2210 if( adapter->has_64bit_addr ) {
2211 len += sprintf(page+len,
2212 "Controller using 64-bit memory addressing\n");
2213 }
2214 else {
2215 len += sprintf(page+len,
2216 "Controller is not using 64-bit memory addressing\n");
2217 }
2218
2219 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2220 adapter->host->irq);
2221
2222 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2223 adapter->numldrv, adapter->product_info.nchannels);
2224
2225 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2226 adapter->fw_version, adapter->bios_version,
2227 adapter->product_info.dram_size);
2228
2229 len += sprintf(page+len,
2230 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2231 adapter->product_info.max_commands, adapter->max_cmds);
2232
2233 len += sprintf(page+len, "support_ext_cdb = %d\n",
2234 adapter->support_ext_cdb);
2235 len += sprintf(page+len, "support_random_del = %d\n",
2236 adapter->support_random_del);
2237 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2238 adapter->boot_ldrv_enabled);
2239 len += sprintf(page+len, "boot_ldrv = %d\n",
2240 adapter->boot_ldrv);
2241 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2242 adapter->boot_pdrv_enabled);
2243 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2244 adapter->boot_pdrv_ch);
2245 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2246 adapter->boot_pdrv_tgt);
2247 len += sprintf(page+len, "quiescent = %d\n",
2248 atomic_read(&adapter->quiescent));
2249 len += sprintf(page+len, "has_cluster = %d\n",
2250 adapter->has_cluster);
2251
2252 len += sprintf(page+len, "\nModule Parameters:\n");
2253 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2254 max_cmd_per_lun);
2255 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2256 max_sectors_per_io);
2257
2258 *eof = 1;
2259
2260 return len;
2261 }
2262
2263
2264
2265 /**
2266 * proc_read_stat()
2267 * @page - buffer to write the data in
2268 * @start - where the actual data has been written in page
2269 * @offset - same meaning as the read system call
2270 * @count - same meaning as the read system call
2271 * @eof - set if no more data needs to be returned
2272 * @data - pointer to our soft state
2273 *
2274 * Diaplay statistical information about the I/O activity.
2275 */
2276 static int
2277 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2278 void *data)
2279 {
2280 adapter_t *adapter;
2281 int len;
2282 int i;
2283
2284 i = 0; /* avoid compilation warnings */
2285 len = 0;
2286 adapter = (adapter_t *)data;
2287
2288 len = sprintf(page, "Statistical Information for this controller\n");
2289 len += sprintf(page+len, "pend_cmds = %d\n",
2290 atomic_read(&adapter->pend_cmds));
2291 #if MEGA_HAVE_STATS
2292 for(i = 0; i < adapter->numldrv; i++) {
2293 len += sprintf(page+len, "Logical Drive %d:\n", i);
2294
2295 len += sprintf(page+len,
2296 "\tReads Issued = %lu, Writes Issued = %lu\n",
2297 adapter->nreads[i], adapter->nwrites[i]);
2298
2299 len += sprintf(page+len,
2300 "\tSectors Read = %lu, Sectors Written = %lu\n",
2301 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2302
2303 len += sprintf(page+len,
2304 "\tRead errors = %lu, Write errors = %lu\n\n",
2305 adapter->rd_errors[i], adapter->wr_errors[i]);
2306 }
2307 #else
2308 len += sprintf(page+len,
2309 "IO and error counters not compiled in driver.\n");
2310 #endif
2311
2312 *eof = 1;
2313
2314 return len;
2315 }
2316
2317
2318 /**
2319 * proc_read_mbox()
2320 * @page - buffer to write the data in
2321 * @start - where the actual data has been written in page
2322 * @offset - same meaning as the read system call
2323 * @count - same meaning as the read system call
2324 * @eof - set if no more data needs to be returned
2325 * @data - pointer to our soft state
2326 *
2327 * Display mailbox information for the last command issued. This information
2328 * is good for debugging.
2329 */
2330 static int
2331 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2332 void *data)
2333 {
2334
2335 adapter_t *adapter = (adapter_t *)data;
2336 volatile mbox_t *mbox = adapter->mbox;
2337 int len = 0;
2338
2339 len = sprintf(page, "Contents of Mail Box Structure\n");
2340 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2341 mbox->m_out.cmd);
2342 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2343 mbox->m_out.cmdid);
2344 len += sprintf(page+len, " No of Sectors= %04d\n",
2345 mbox->m_out.numsectors);
2346 len += sprintf(page+len, " LBA = 0x%02x\n",
2347 mbox->m_out.lba);
2348 len += sprintf(page+len, " DTA = 0x%08x\n",
2349 mbox->m_out.xferaddr);
2350 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2351 mbox->m_out.logdrv);
2352 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2353 mbox->m_out.numsgelements);
2354 len += sprintf(page+len, " Busy = %01x\n",
2355 mbox->m_in.busy);
2356 len += sprintf(page+len, " Status = 0x%02x\n",
2357 mbox->m_in.status);
2358
2359 *eof = 1;
2360
2361 return len;
2362 }
2363
2364
2365 /**
2366 * proc_rebuild_rate()
2367 * @page - buffer to write the data in
2368 * @start - where the actual data has been written in page
2369 * @offset - same meaning as the read system call
2370 * @count - same meaning as the read system call
2371 * @eof - set if no more data needs to be returned
2372 * @data - pointer to our soft state
2373 *
2374 * Display current rebuild rate
2375 */
2376 static int
2377 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2378 void *data)
2379 {
2380 adapter_t *adapter = (adapter_t *)data;
2381 dma_addr_t dma_handle;
2382 caddr_t inquiry;
2383 struct pci_dev *pdev;
2384 int len = 0;
2385
2386 if( make_local_pdev(adapter, &pdev) != 0 ) {
2387 *eof = 1;
2388 return len;
2389 }
2390
2391 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2392 free_local_pdev(pdev);
2393 *eof = 1;
2394 return len;
2395 }
2396
2397 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2398
2399 len = sprintf(page, "Adapter inquiry failed.\n");
2400
2401 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2402
2403 mega_free_inquiry(inquiry, dma_handle, pdev);
2404
2405 free_local_pdev(pdev);
2406
2407 *eof = 1;
2408
2409 return len;
2410 }
2411
2412 if( adapter->flag & BOARD_40LD ) {
2413 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2414 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2415 }
2416 else {
2417 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2418 ((mraid_ext_inquiry *)
2419 inquiry)->raid_inq.adapter_info.rebuild_rate);
2420 }
2421
2422
2423 mega_free_inquiry(inquiry, dma_handle, pdev);
2424
2425 free_local_pdev(pdev);
2426
2427 *eof = 1;
2428
2429 return len;
2430 }
2431
2432
2433 /**
2434 * proc_battery()
2435 * @page - buffer to write the data in
2436 * @start - where the actual data has been written in page
2437 * @offset - same meaning as the read system call
2438 * @count - same meaning as the read system call
2439 * @eof - set if no more data needs to be returned
2440 * @data - pointer to our soft state
2441 *
2442 * Display information about the battery module on the controller.
2443 */
2444 static int
2445 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2446 void *data)
2447 {
2448 adapter_t *adapter = (adapter_t *)data;
2449 dma_addr_t dma_handle;
2450 caddr_t inquiry;
2451 struct pci_dev *pdev;
2452 u8 battery_status = 0;
2453 char str[256];
2454 int len = 0;
2455
2456 if( make_local_pdev(adapter, &pdev) != 0 ) {
2457 *eof = 1;
2458 return len;
2459 }
2460
2461 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2462 free_local_pdev(pdev);
2463 *eof = 1;
2464 return len;
2465 }
2466
2467 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2468
2469 len = sprintf(page, "Adapter inquiry failed.\n");
2470
2471 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2472
2473 mega_free_inquiry(inquiry, dma_handle, pdev);
2474
2475 free_local_pdev(pdev);
2476
2477 *eof = 1;
2478
2479 return len;
2480 }
2481
2482 if( adapter->flag & BOARD_40LD ) {
2483 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2484 }
2485 else {
2486 battery_status = ((mraid_ext_inquiry *)inquiry)->
2487 raid_inq.adapter_info.battery_status;
2488 }
2489
2490 /*
2491 * Decode the battery status
2492 */
2493 sprintf(str, "Battery Status:[%d]", battery_status);
2494
2495 if(battery_status == MEGA_BATT_CHARGE_DONE)
2496 strcat(str, " Charge Done");
2497
2498 if(battery_status & MEGA_BATT_MODULE_MISSING)
2499 strcat(str, " Module Missing");
2500
2501 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2502 strcat(str, " Low Voltage");
2503
2504 if(battery_status & MEGA_BATT_TEMP_HIGH)
2505 strcat(str, " Temperature High");
2506
2507 if(battery_status & MEGA_BATT_PACK_MISSING)
2508 strcat(str, " Pack Missing");
2509
2510 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2511 strcat(str, " Charge In-progress");
2512
2513 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2514 strcat(str, " Charge Fail");
2515
2516 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2517 strcat(str, " Cycles Exceeded");
2518
2519 len = sprintf(page, "%s\n", str);
2520
2521
2522 mega_free_inquiry(inquiry, dma_handle, pdev);
2523
2524 free_local_pdev(pdev);
2525
2526 *eof = 1;
2527
2528 return len;
2529 }
2530
2531
2532 /**
2533 * proc_pdrv_ch0()
2534 * @page - buffer to write the data in
2535 * @start - where the actual data has been written in page
2536 * @offset - same meaning as the read system call
2537 * @count - same meaning as the read system call
2538 * @eof - set if no more data needs to be returned
2539 * @data - pointer to our soft state
2540 *
2541 * Display information about the physical drives on physical channel 0.
2542 */
2543 static int
2544 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2545 void *data)
2546 {
2547 adapter_t *adapter = (adapter_t *)data;
2548
2549 *eof = 1;
2550
2551 return (proc_pdrv(adapter, page, 0));
2552 }
2553
2554
2555 /**
2556 * proc_pdrv_ch1()
2557 * @page - buffer to write the data in
2558 * @start - where the actual data has been written in page
2559 * @offset - same meaning as the read system call
2560 * @count - same meaning as the read system call
2561 * @eof - set if no more data needs to be returned
2562 * @data - pointer to our soft state
2563 *
2564 * Display information about the physical drives on physical channel 1.
2565 */
2566 static int
2567 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2568 void *data)
2569 {
2570 adapter_t *adapter = (adapter_t *)data;
2571
2572 *eof = 1;
2573
2574 return (proc_pdrv(adapter, page, 1));
2575 }
2576
2577
2578 /**
2579 * proc_pdrv_ch2()
2580 * @page - buffer to write the data in
2581 * @start - where the actual data has been written in page
2582 * @offset - same meaning as the read system call
2583 * @count - same meaning as the read system call
2584 * @eof - set if no more data needs to be returned
2585 * @data - pointer to our soft state
2586 *
2587 * Display information about the physical drives on physical channel 2.
2588 */
2589 static int
2590 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2591 void *data)
2592 {
2593 adapter_t *adapter = (adapter_t *)data;
2594
2595 *eof = 1;
2596
2597 return (proc_pdrv(adapter, page, 2));
2598 }
2599
2600
2601 /**
2602 * proc_pdrv_ch3()
2603 * @page - buffer to write the data in
2604 * @start - where the actual data has been written in page
2605 * @offset - same meaning as the read system call
2606 * @count - same meaning as the read system call
2607 * @eof - set if no more data needs to be returned
2608 * @data - pointer to our soft state
2609 *
2610 * Display information about the physical drives on physical channel 3.
2611 */
2612 static int
2613 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2614 void *data)
2615 {
2616 adapter_t *adapter = (adapter_t *)data;
2617
2618 *eof = 1;
2619
2620 return (proc_pdrv(adapter, page, 3));
2621 }
2622
2623
2624 /**
2625 * proc_pdrv()
2626 * @page - buffer to write the data in
2627 * @adapter - pointer to our soft state
2628 *
2629 * Display information about the physical drives.
2630 */
2631 static int
2632 proc_pdrv(adapter_t *adapter, char *page, int channel)
2633 {
2634 dma_addr_t dma_handle;
2635 char *scsi_inq;
2636 dma_addr_t scsi_inq_dma_handle;
2637 caddr_t inquiry;
2638 struct pci_dev *pdev;
2639 u8 *pdrv_state;
2640 u8 state;
2641 int tgt;
2642 int max_channels;
2643 int len = 0;
2644 char str[80];
2645 int i;
2646
2647 if( make_local_pdev(adapter, &pdev) != 0 ) {
2648 return len;
2649 }
2650
2651 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2652 goto free_pdev;
2653 }
2654
2655 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2656 len = sprintf(page, "Adapter inquiry failed.\n");
2657
2658 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2659
2660 goto free_inquiry;
2661 }
2662
2663
2664 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2665
2666 if( scsi_inq == NULL ) {
2667 len = sprintf(page, "memory not available for scsi inq.\n");
2668
2669 goto free_inquiry;
2670 }
2671
2672 if( adapter->flag & BOARD_40LD ) {
2673 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2674 }
2675 else {
2676 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2677 raid_inq.pdrv_info.pdrv_state;
2678 }
2679
2680 max_channels = adapter->product_info.nchannels;
2681
2682 if( channel >= max_channels ) {
2683 goto free_pci;
2684 }
2685
2686 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2687
2688 i = channel*16 + tgt;
2689
2690 state = *(pdrv_state + i);
2691
2692 switch( state & 0x0F ) {
2693
2694 case PDRV_ONLINE:
2695 sprintf(str,
2696 "Channel:%2d Id:%2d State: Online",
2697 channel, tgt);
2698 break;
2699
2700 case PDRV_FAILED:
2701 sprintf(str,
2702 "Channel:%2d Id:%2d State: Failed",
2703 channel, tgt);
2704 break;
2705
2706 case PDRV_RBLD:
2707 sprintf(str,
2708 "Channel:%2d Id:%2d State: Rebuild",
2709 channel, tgt);
2710 break;
2711
2712 case PDRV_HOTSPARE:
2713 sprintf(str,
2714 "Channel:%2d Id:%2d State: Hot spare",
2715 channel, tgt);
2716 break;
2717
2718 default:
2719 sprintf(str,
2720 "Channel:%2d Id:%2d State: Un-configured",
2721 channel, tgt);
2722 break;
2723
2724 }
2725
2726 /*
2727 * This interface displays inquiries for disk drives
2728 * only. Inquries for logical drives and non-disk
2729 * devices are available through /proc/scsi/scsi
2730 */
2731 memset(scsi_inq, 0, 256);
2732 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2733 scsi_inq_dma_handle) ||
2734 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2735 continue;
2736 }
2737
2738 /*
2739 * Check for overflow. We print less than 240
2740 * characters for inquiry
2741 */
2742 if( (len + 240) >= PAGE_SIZE ) break;
2743
2744 len += sprintf(page+len, "%s.\n", str);
2745
2746 len += mega_print_inquiry(page+len, scsi_inq);
2747 }
2748
2749 free_pci:
2750 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2751 free_inquiry:
2752 mega_free_inquiry(inquiry, dma_handle, pdev);
2753 free_pdev:
2754 free_local_pdev(pdev);
2755
2756 return len;
2757 }
2758
2759
2760 /*
2761 * Display scsi inquiry
2762 */
2763 static int
2764 mega_print_inquiry(char *page, char *scsi_inq)
2765 {
2766 int len = 0;
2767 int i;
2768
2769 len = sprintf(page, " Vendor: ");
2770 for( i = 8; i < 16; i++ ) {
2771 len += sprintf(page+len, "%c", scsi_inq[i]);
2772 }
2773
2774 len += sprintf(page+len, " Model: ");
2775
2776 for( i = 16; i < 32; i++ ) {
2777 len += sprintf(page+len, "%c", scsi_inq[i]);
2778 }
2779
2780 len += sprintf(page+len, " Rev: ");
2781
2782 for( i = 32; i < 36; i++ ) {
2783 len += sprintf(page+len, "%c", scsi_inq[i]);
2784 }
2785
2786 len += sprintf(page+len, "\n");
2787
2788 i = scsi_inq[0] & 0x1f;
2789
2790 len += sprintf(page+len, " Type: %s ",
2791 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2792 "Unknown ");
2793
2794 len += sprintf(page+len,
2795 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2796
2797 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2798 len += sprintf(page+len, " CCS\n");
2799 else
2800 len += sprintf(page+len, "\n");
2801
2802 return len;
2803 }
2804
2805
2806 /**
2807 * proc_rdrv_10()
2808 * @page - buffer to write the data in
2809 * @start - where the actual data has been written in page
2810 * @offset - same meaning as the read system call
2811 * @count - same meaning as the read system call
2812 * @eof - set if no more data needs to be returned
2813 * @data - pointer to our soft state
2814 *
2815 * Display real time information about the logical drives 0 through 9.
2816 */
2817 static int
2818 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2819 void *data)
2820 {
2821 adapter_t *adapter = (adapter_t *)data;
2822
2823 *eof = 1;
2824
2825 return (proc_rdrv(adapter, page, 0, 9));
2826 }
2827
2828
2829 /**
2830 * proc_rdrv_20()
2831 * @page - buffer to write the data in
2832 * @start - where the actual data has been written in page
2833 * @offset - same meaning as the read system call
2834 * @count - same meaning as the read system call
2835 * @eof - set if no more data needs to be returned
2836 * @data - pointer to our soft state
2837 *
2838 * Display real time information about the logical drives 0 through 9.
2839 */
2840 static int
2841 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2842 void *data)
2843 {
2844 adapter_t *adapter = (adapter_t *)data;
2845
2846 *eof = 1;
2847
2848 return (proc_rdrv(adapter, page, 10, 19));
2849 }
2850
2851
2852 /**
2853 * proc_rdrv_30()
2854 * @page - buffer to write the data in
2855 * @start - where the actual data has been written in page
2856 * @offset - same meaning as the read system call
2857 * @count - same meaning as the read system call
2858 * @eof - set if no more data needs to be returned
2859 * @data - pointer to our soft state
2860 *
2861 * Display real time information about the logical drives 0 through 9.
2862 */
2863 static int
2864 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2865 void *data)
2866 {
2867 adapter_t *adapter = (adapter_t *)data;
2868
2869 *eof = 1;
2870
2871 return (proc_rdrv(adapter, page, 20, 29));
2872 }
2873
2874
2875 /**
2876 * proc_rdrv_40()
2877 * @page - buffer to write the data in
2878 * @start - where the actual data has been written in page
2879 * @offset - same meaning as the read system call
2880 * @count - same meaning as the read system call
2881 * @eof - set if no more data needs to be returned
2882 * @data - pointer to our soft state
2883 *
2884 * Display real time information about the logical drives 0 through 9.
2885 */
2886 static int
2887 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2888 void *data)
2889 {
2890 adapter_t *adapter = (adapter_t *)data;
2891
2892 *eof = 1;
2893
2894 return (proc_rdrv(adapter, page, 30, 39));
2895 }
2896
2897
2898 /**
2899 * proc_rdrv()
2900 * @page - buffer to write the data in
2901 * @adapter - pointer to our soft state
2902 * @start - starting logical drive to display
2903 * @end - ending logical drive to display
2904 *
2905 * We do not print the inquiry information since its already available through
2906 * /proc/scsi/scsi interface
2907 */
2908 static int
2909 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2910 {
2911 dma_addr_t dma_handle;
2912 logdrv_param *lparam;
2913 megacmd_t mc;
2914 char *disk_array;
2915 dma_addr_t disk_array_dma_handle;
2916 caddr_t inquiry;
2917 struct pci_dev *pdev;
2918 u8 *rdrv_state;
2919 int num_ldrv;
2920 u32 array_sz;
2921 int len = 0;
2922 int i;
2923
2924 if( make_local_pdev(adapter, &pdev) != 0 ) {
2925 return len;
2926 }
2927
2928 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2929 free_local_pdev(pdev);
2930 return len;
2931 }
2932
2933 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2934
2935 len = sprintf(page, "Adapter inquiry failed.\n");
2936
2937 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2938
2939 mega_free_inquiry(inquiry, dma_handle, pdev);
2940
2941 free_local_pdev(pdev);
2942
2943 return len;
2944 }
2945
2946 memset(&mc, 0, sizeof(megacmd_t));
2947
2948 if( adapter->flag & BOARD_40LD ) {
2949 array_sz = sizeof(disk_array_40ld);
2950
2951 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2952
2953 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2954 }
2955 else {
2956 array_sz = sizeof(disk_array_8ld);
2957
2958 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2959 raid_inq.logdrv_info.ldrv_state;
2960
2961 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2962 raid_inq.logdrv_info.num_ldrv;
2963 }
2964
2965 disk_array = pci_alloc_consistent(pdev, array_sz,
2966 &disk_array_dma_handle);
2967
2968 if( disk_array == NULL ) {
2969 len = sprintf(page, "memory not available.\n");
2970
2971 mega_free_inquiry(inquiry, dma_handle, pdev);
2972
2973 free_local_pdev(pdev);
2974
2975 return len;
2976 }
2977
2978 mc.xferaddr = (u32)disk_array_dma_handle;
2979
2980 if( adapter->flag & BOARD_40LD ) {
2981 mc.cmd = FC_NEW_CONFIG;
2982 mc.opcode = OP_DCMD_READ_CONFIG;
2983
2984 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
2985
2986 len = sprintf(page, "40LD read config failed.\n");
2987
2988 mega_free_inquiry(inquiry, dma_handle, pdev);
2989
2990 pci_free_consistent(pdev, array_sz, disk_array,
2991 disk_array_dma_handle);
2992
2993 free_local_pdev(pdev);
2994
2995 return len;
2996 }
2997
2998 }
2999 else {
3000 mc.cmd = NEW_READ_CONFIG_8LD;
3001
3002 if( mega_internal_command(adapter, LOCK_INT, &mc, NULL) ) {
3003
3004 mc.cmd = READ_CONFIG_8LD;
3005
3006 if( mega_internal_command(adapter, LOCK_INT, &mc,
3007 NULL) ){
3008
3009 len = sprintf(page,
3010 "8LD read config failed.\n");
3011
3012 mega_free_inquiry(inquiry, dma_handle, pdev);
3013
3014 pci_free_consistent(pdev, array_sz,
3015 disk_array,
3016 disk_array_dma_handle);
3017
3018 free_local_pdev(pdev);
3019
3020 return len;
3021 }
3022 }
3023 }
3024
3025 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3026
3027 if( adapter->flag & BOARD_40LD ) {
3028 lparam =
3029 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3030 }
3031 else {
3032 lparam =
3033 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3034 }
3035
3036 /*
3037 * Check for overflow. We print less than 240 characters for
3038 * information about each logical drive.
3039 */
3040 if( (len + 240) >= PAGE_SIZE ) break;
3041
3042 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3043
3044 switch( rdrv_state[i] & 0x0F ) {
3045 case RDRV_OFFLINE:
3046 len += sprintf(page+len, "state: offline");
3047 break;
3048
3049 case RDRV_DEGRADED:
3050 len += sprintf(page+len, "state: degraded");
3051 break;
3052
3053 case RDRV_OPTIMAL:
3054 len += sprintf(page+len, "state: optimal");
3055 break;
3056
3057 case RDRV_DELETED:
3058 len += sprintf(page+len, "state: deleted");
3059 break;
3060
3061 default:
3062 len += sprintf(page+len, "state: unknown");
3063 break;
3064 }
3065
3066 /*
3067 * Check if check consistency or initialization is going on
3068 * for this logical drive.
3069 */
3070 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3071 len += sprintf(page+len,
3072 ", check-consistency in progress");
3073 }
3074 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3075 len += sprintf(page+len,
3076 ", initialization in progress");
3077 }
3078
3079 len += sprintf(page+len, "\n");
3080
3081 len += sprintf(page+len, "Span depth:%3d, ",
3082 lparam->span_depth);
3083
3084 len += sprintf(page+len, "RAID level:%3d, ",
3085 lparam->level);
3086
3087 len += sprintf(page+len, "Stripe size:%3d, ",
3088 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3089
3090 len += sprintf(page+len, "Row size:%3d\n",
3091 lparam->row_size);
3092
3093
3094 len += sprintf(page+len, "Read Policy: ");
3095
3096 switch(lparam->read_ahead) {
3097
3098 case NO_READ_AHEAD:
3099 len += sprintf(page+len, "No read ahead, ");
3100 break;
3101
3102 case READ_AHEAD:
3103 len += sprintf(page+len, "Read ahead, ");
3104 break;
3105
3106 case ADAP_READ_AHEAD:
3107 len += sprintf(page+len, "Adaptive, ");
3108 break;
3109
3110 }
3111
3112 len += sprintf(page+len, "Write Policy: ");
3113
3114 switch(lparam->write_mode) {
3115
3116 case WRMODE_WRITE_THRU:
3117 len += sprintf(page+len, "Write thru, ");
3118 break;
3119
3120 case WRMODE_WRITE_BACK:
3121 len += sprintf(page+len, "Write back, ");
3122 break;
3123 }
3124
3125 len += sprintf(page+len, "Cache Policy: ");
3126
3127 switch(lparam->direct_io) {
3128
3129 case CACHED_IO:
3130 len += sprintf(page+len, "Cached IO\n\n");
3131 break;
3132
3133 case DIRECT_IO:
3134 len += sprintf(page+len, "Direct IO\n\n");
3135 break;
3136 }
3137 }
3138
3139 mega_free_inquiry(inquiry, dma_handle, pdev);
3140
3141 pci_free_consistent(pdev, array_sz, disk_array,
3142 disk_array_dma_handle);
3143
3144 free_local_pdev(pdev);
3145
3146 return len;
3147 }
3148
3149 #endif
3150
3151
3152 /**
3153 * megaraid_biosparam()
3154 *
3155 * Return the disk geometry for a particular disk
3156 */
3157 static int
3158 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3159 sector_t capacity, int geom[])
3160 {
3161 adapter_t *adapter;
3162 unsigned char *bh;
3163 int heads;
3164 int sectors;
3165 int cylinders;
3166 int rval;
3167
3168 /* Get pointer to host config structure */
3169 adapter = (adapter_t *)sdev->host->hostdata;
3170
3171 if (IS_RAID_CH(adapter, sdev->channel)) {
3172 /* Default heads (64) & sectors (32) */
3173 heads = 64;
3174 sectors = 32;
3175 cylinders = (ulong)capacity / (heads * sectors);
3176
3177 /*
3178 * Handle extended translation size for logical drives
3179 * > 1Gb
3180 */
3181 if ((ulong)capacity >= 0x200000) {
3182 heads = 255;
3183 sectors = 63;
3184 cylinders = (ulong)capacity / (heads * sectors);
3185 }
3186
3187 /* return result */
3188 geom[0] = heads;
3189 geom[1] = sectors;
3190 geom[2] = cylinders;
3191 }
3192 else {
3193 bh = scsi_bios_ptable(bdev);
3194
3195 if( bh ) {
3196 rval = scsi_partsize(bh, capacity,
3197 &geom[2], &geom[0], &geom[1]);
3198 kfree(bh);
3199 if( rval != -1 )
3200 return rval;
3201 }
3202
3203 printk(KERN_INFO
3204 "megaraid: invalid partition on this disk on channel %d\n",
3205 sdev->channel);
3206
3207 /* Default heads (64) & sectors (32) */
3208 heads = 64;
3209 sectors = 32;
3210 cylinders = (ulong)capacity / (heads * sectors);
3211
3212 /* Handle extended translation size for logical drives > 1Gb */
3213 if ((ulong)capacity >= 0x200000) {
3214 heads = 255;
3215 sectors = 63;
3216 cylinders = (ulong)capacity / (heads * sectors);
3217 }
3218
3219 /* return result */
3220 geom[0] = heads;
3221 geom[1] = sectors;
3222 geom[2] = cylinders;
3223 }
3224
3225 return 0;
3226 }
3227
3228 /**
3229 * mega_init_scb()
3230 * @adapter - pointer to our soft state
3231 *
3232 * Allocate memory for the various pointers in the scb structures:
3233 * scatter-gather list pointer, passthru and extended passthru structure
3234 * pointers.
3235 */
3236 static int
3237 mega_init_scb(adapter_t *adapter)
3238 {
3239 scb_t *scb;
3240 int i;
3241
3242 for( i = 0; i < adapter->max_cmds; i++ ) {
3243
3244 scb = &adapter->scb_list[i];
3245
3246 scb->sgl64 = NULL;
3247 scb->sgl = NULL;
3248 scb->pthru = NULL;
3249 scb->epthru = NULL;
3250 }
3251
3252 for( i = 0; i < adapter->max_cmds; i++ ) {
3253
3254 scb = &adapter->scb_list[i];
3255
3256 scb->idx = i;
3257
3258 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3259 sizeof(mega_sgl64) * adapter->sglen,
3260 &scb->sgl_dma_addr);
3261
3262 scb->sgl = (mega_sglist *)scb->sgl64;
3263
3264 if( !scb->sgl ) {
3265 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3266 mega_free_sgl(adapter);
3267 return -1;
3268 }
3269
3270 scb->pthru = pci_alloc_consistent(adapter->dev,
3271 sizeof(mega_passthru),
3272 &scb->pthru_dma_addr);
3273
3274 if( !scb->pthru ) {
3275 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3276 mega_free_sgl(adapter);
3277 return -1;
3278 }
3279
3280 scb->epthru = pci_alloc_consistent(adapter->dev,
3281 sizeof(mega_ext_passthru),
3282 &scb->epthru_dma_addr);
3283
3284 if( !scb->epthru ) {
3285 printk(KERN_WARNING
3286 "Can't allocate extended passthru.\n");
3287 mega_free_sgl(adapter);
3288 return -1;
3289 }
3290
3291
3292 scb->dma_type = MEGA_DMA_TYPE_NONE;
3293
3294 /*
3295 * Link to free list
3296 * lock not required since we are loading the driver, so no
3297 * commands possible right now.
3298 */
3299 scb->state = SCB_FREE;
3300 scb->cmd = NULL;
3301 list_add(&scb->list, &adapter->free_list);
3302 }
3303
3304 return 0;
3305 }
3306
3307
3308 /**
3309 * megadev_open()
3310 * @inode - unused
3311 * @filep - unused
3312 *
3313 * Routines for the character/ioctl interface to the driver. Find out if this
3314 * is a valid open. If yes, increment the module use count so that it cannot
3315 * be unloaded.
3316 */
3317 static int
3318 megadev_open (struct inode *inode, struct file *filep)
3319 {
3320 /*
3321 * Only allow superuser to access private ioctl interface
3322 */
3323 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3324
3325 return 0;
3326 }
3327
3328
3329 /**
3330 * megadev_ioctl()
3331 * @inode - Our device inode
3332 * @filep - unused
3333 * @cmd - ioctl command
3334 * @arg - user buffer
3335 *
3336 * ioctl entry point for our private ioctl interface. We move the data in from
3337 * the user space, prepare the command (if necessary, convert the old MIMD
3338 * ioctl to new ioctl command), and issue a synchronous command to the
3339 * controller.
3340 */
3341 static int
3342 megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3343 unsigned long arg)
3344 {
3345 adapter_t *adapter;
3346 nitioctl_t uioc;
3347 int adapno;
3348 int rval;
3349 mega_passthru __user *upthru; /* user address for passthru */
3350 mega_passthru *pthru; /* copy user passthru here */
3351 dma_addr_t pthru_dma_hndl;
3352 void *data = NULL; /* data to be transferred */
3353 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3354 megacmd_t mc;
3355 megastat_t __user *ustats;
3356 int num_ldrv;
3357 u32 uxferaddr = 0;
3358 struct pci_dev *pdev;
3359
3360 ustats = NULL; /* avoid compilation warnings */
3361 num_ldrv = 0;
3362
3363 /*
3364 * Make sure only USCSICMD are issued through this interface.
3365 * MIMD application would still fire different command.
3366 */
3367 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3368 return -EINVAL;
3369 }
3370
3371 /*
3372 * Check and convert a possible MIMD command to NIT command.
3373 * mega_m_to_n() copies the data from the user space, so we do not
3374 * have to do it here.
3375 * NOTE: We will need some user address to copyout the data, therefore
3376 * the inteface layer will also provide us with the required user
3377 * addresses.
3378 */
3379 memset(&uioc, 0, sizeof(nitioctl_t));
3380 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3381 return rval;
3382
3383
3384 switch( uioc.opcode ) {
3385
3386 case GET_DRIVER_VER:
3387 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3388 return (-EFAULT);
3389
3390 break;
3391
3392 case GET_N_ADAP:
3393 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3394 return (-EFAULT);
3395
3396 /*
3397 * Shucks. MIMD interface returns a positive value for number
3398 * of adapters. TODO: Change it to return 0 when there is no
3399 * applicatio using mimd interface.
3400 */
3401 return hba_count;
3402
3403 case GET_ADAP_INFO:
3404
3405 /*
3406 * Which adapter
3407 */
3408 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3409 return (-ENODEV);
3410
3411 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3412 sizeof(struct mcontroller)) )
3413 return (-EFAULT);
3414 break;
3415
3416 #if MEGA_HAVE_STATS
3417
3418 case GET_STATS:
3419 /*
3420 * Which adapter
3421 */
3422 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3423 return (-ENODEV);
3424
3425 adapter = hba_soft_state[adapno];
3426
3427 ustats = uioc.uioc_uaddr;
3428
3429 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3430 return (-EFAULT);
3431
3432 /*
3433 * Check for the validity of the logical drive number
3434 */
3435 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3436
3437 if( copy_to_user(ustats->nreads, adapter->nreads,
3438 num_ldrv*sizeof(u32)) )
3439 return -EFAULT;
3440
3441 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3442 num_ldrv*sizeof(u32)) )
3443 return -EFAULT;
3444
3445 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3446 num_ldrv*sizeof(u32)) )
3447 return -EFAULT;
3448
3449 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3450 num_ldrv*sizeof(u32)) )
3451 return -EFAULT;
3452
3453 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3454 num_ldrv*sizeof(u32)) )
3455 return -EFAULT;
3456
3457 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3458 num_ldrv*sizeof(u32)) )
3459 return -EFAULT;
3460
3461 return 0;
3462
3463 #endif
3464 case MBOX_CMD:
3465
3466 /*
3467 * Which adapter
3468 */
3469 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3470 return (-ENODEV);
3471
3472 adapter = hba_soft_state[adapno];
3473
3474 /*
3475 * Deletion of logical drive is a special case. The adapter
3476 * should be quiescent before this command is issued.
3477 */
3478 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3479 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3480
3481 /*
3482 * Do we support this feature
3483 */
3484 if( !adapter->support_random_del ) {
3485 printk(KERN_WARNING "megaraid: logdrv ");
3486 printk("delete on non-supporting F/W.\n");
3487
3488 return (-EINVAL);
3489 }
3490
3491 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3492
3493 if( rval == 0 ) {
3494 memset(&mc, 0, sizeof(megacmd_t));
3495
3496 mc.status = rval;
3497
3498 rval = mega_n_to_m((void __user *)arg, &mc);
3499 }
3500
3501 return rval;
3502 }
3503 /*
3504 * This interface only support the regular passthru commands.
3505 * Reject extended passthru and 64-bit passthru
3506 */
3507 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3508 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3509
3510 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3511
3512 return (-EINVAL);
3513 }
3514
3515 /*
3516 * For all internal commands, the buffer must be allocated in
3517 * <4GB address range
3518 */
3519 if( make_local_pdev(adapter, &pdev) != 0 )
3520 return -EIO;
3521
3522 /* Is it a passthru command or a DCMD */
3523 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3524 /* Passthru commands */
3525
3526 pthru = pci_alloc_consistent(pdev,
3527 sizeof(mega_passthru),
3528 &pthru_dma_hndl);
3529
3530 if( pthru == NULL ) {
3531 free_local_pdev(pdev);
3532 return (-ENOMEM);
3533 }
3534
3535 /*
3536 * The user passthru structure
3537 */
3538 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3539
3540 /*
3541 * Copy in the user passthru here.
3542 */
3543 if( copy_from_user(pthru, upthru,
3544 sizeof(mega_passthru)) ) {
3545
3546 pci_free_consistent(pdev,
3547 sizeof(mega_passthru), pthru,
3548 pthru_dma_hndl);
3549
3550 free_local_pdev(pdev);
3551
3552 return (-EFAULT);
3553 }
3554
3555 /*
3556 * Is there a data transfer
3557 */
3558 if( pthru->dataxferlen ) {
3559 data = pci_alloc_consistent(pdev,
3560 pthru->dataxferlen,
3561 &data_dma_hndl);
3562
3563 if( data == NULL ) {
3564 pci_free_consistent(pdev,
3565 sizeof(mega_passthru),
3566 pthru,
3567 pthru_dma_hndl);
3568
3569 free_local_pdev(pdev);
3570
3571 return (-ENOMEM);
3572 }
3573
3574 /*
3575 * Save the user address and point the kernel
3576 * address at just allocated memory
3577 */
3578 uxferaddr = pthru->dataxferaddr;
3579 pthru->dataxferaddr = data_dma_hndl;
3580 }
3581
3582
3583 /*
3584 * Is data coming down-stream
3585 */
3586 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3587 /*
3588 * Get the user data
3589 */
3590 if( copy_from_user(data, (char __user *)uxferaddr,
3591 pthru->dataxferlen) ) {
3592 rval = (-EFAULT);
3593 goto freemem_and_return;
3594 }
3595 }
3596
3597 memset(&mc, 0, sizeof(megacmd_t));
3598
3599 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3600 mc.xferaddr = (u32)pthru_dma_hndl;
3601
3602 /*
3603 * Issue the command
3604 */
3605 mega_internal_command(adapter, LOCK_INT, &mc, pthru);
3606
3607 rval = mega_n_to_m((void __user *)arg, &mc);
3608
3609 if( rval ) goto freemem_and_return;
3610
3611
3612 /*
3613 * Is data going up-stream
3614 */
3615 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3616 if( copy_to_user((char __user *)uxferaddr, data,
3617 pthru->dataxferlen) ) {
3618 rval = (-EFAULT);
3619 }
3620 }
3621
3622 /*
3623 * Send the request sense data also, irrespective of
3624 * whether the user has asked for it or not.
3625 */
3626 copy_to_user(upthru->reqsensearea,
3627 pthru->reqsensearea, 14);
3628
3629 freemem_and_return:
3630 if( pthru->dataxferlen ) {
3631 pci_free_consistent(pdev,
3632 pthru->dataxferlen, data,
3633 data_dma_hndl);
3634 }
3635
3636 pci_free_consistent(pdev, sizeof(mega_passthru),
3637 pthru, pthru_dma_hndl);
3638
3639 free_local_pdev(pdev);
3640
3641 return rval;
3642 }
3643 else {
3644 /* DCMD commands */
3645
3646 /*
3647 * Is there a data transfer
3648 */
3649 if( uioc.xferlen ) {
3650 data = pci_alloc_consistent(pdev,
3651 uioc.xferlen, &data_dma_hndl);
3652
3653 if( data == NULL ) {
3654 free_local_pdev(pdev);
3655 return (-ENOMEM);
3656 }
3657
3658 uxferaddr = MBOX(uioc)->xferaddr;
3659 }
3660
3661 /*
3662 * Is data coming down-stream
3663 */
3664 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3665 /*
3666 * Get the user data
3667 */
3668 if( copy_from_user(data, (char __user *)uxferaddr,
3669 uioc.xferlen) ) {
3670
3671 pci_free_consistent(pdev,
3672 uioc.xferlen,
3673 data, data_dma_hndl);
3674
3675 free_local_pdev(pdev);
3676
3677 return (-EFAULT);
3678 }
3679 }
3680
3681 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3682
3683 mc.xferaddr = (u32)data_dma_hndl;
3684
3685 /*
3686 * Issue the command
3687 */
3688 mega_internal_command(adapter, LOCK_INT, &mc, NULL);
3689
3690 rval = mega_n_to_m((void __user *)arg, &mc);
3691
3692 if( rval ) {
3693 if( uioc.xferlen ) {
3694 pci_free_consistent(pdev,
3695 uioc.xferlen, data,
3696 data_dma_hndl);
3697 }
3698
3699 free_local_pdev(pdev);
3700
3701 return rval;
3702 }
3703
3704 /*
3705 * Is data going up-stream
3706 */
3707 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3708 if( copy_to_user((char __user *)uxferaddr, data,
3709 uioc.xferlen) ) {
3710
3711 rval = (-EFAULT);
3712 }
3713 }
3714
3715 if( uioc.xferlen ) {
3716 pci_free_consistent(pdev,
3717 uioc.xferlen, data,
3718 data_dma_hndl);
3719 }
3720
3721 free_local_pdev(pdev);
3722
3723 return rval;
3724 }
3725
3726 default:
3727 return (-EINVAL);
3728 }
3729
3730 return 0;
3731 }
3732
3733 /**
3734 * mega_m_to_n()
3735 * @arg - user address
3736 * @uioc - new ioctl structure
3737 *
3738 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3739 * structure
3740 *
3741 * Converts the older mimd ioctl structure to newer NIT structure
3742 */
3743 static int
3744 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3745 {
3746 struct uioctl_t uioc_mimd;
3747 char signature[8] = {0};
3748 u8 opcode;
3749 u8 subopcode;
3750
3751
3752 /*
3753 * check is the application conforms to NIT. We do not have to do much
3754 * in that case.
3755 * We exploit the fact that the signature is stored in the very
3756 * begining of the structure.
3757 */
3758
3759 if( copy_from_user(signature, arg, 7) )
3760 return (-EFAULT);
3761
3762 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3763
3764 /*
3765 * NOTE NOTE: The nit ioctl is still under flux because of
3766 * change of mailbox definition, in HPE. No applications yet
3767 * use this interface and let's not have applications use this
3768 * interface till the new specifitions are in place.
3769 */
3770 return -EINVAL;
3771 #if 0
3772 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3773 return (-EFAULT);
3774 return 0;
3775 #endif
3776 }
3777
3778 /*
3779 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3780 *
3781 * Get the user ioctl structure
3782 */
3783 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3784 return (-EFAULT);
3785
3786
3787 /*
3788 * Get the opcode and subopcode for the commands
3789 */
3790 opcode = uioc_mimd.ui.fcs.opcode;
3791 subopcode = uioc_mimd.ui.fcs.subopcode;
3792
3793 switch (opcode) {
3794 case 0x82:
3795
3796 switch (subopcode) {
3797
3798 case MEGAIOC_QDRVRVER: /* Query driver version */
3799 uioc->opcode = GET_DRIVER_VER;
3800 uioc->uioc_uaddr = uioc_mimd.data;
3801 break;
3802
3803 case MEGAIOC_QNADAP: /* Get # of adapters */
3804 uioc->opcode = GET_N_ADAP;
3805 uioc->uioc_uaddr = uioc_mimd.data;
3806 break;
3807
3808 case MEGAIOC_QADAPINFO: /* Get adapter information */
3809 uioc->opcode = GET_ADAP_INFO;
3810 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3811 uioc->uioc_uaddr = uioc_mimd.data;
3812 break;
3813
3814 default:
3815 return(-EINVAL);
3816 }
3817
3818 break;
3819
3820
3821 case 0x81:
3822
3823 uioc->opcode = MBOX_CMD;
3824 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3825
3826 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3827
3828 uioc->xferlen = uioc_mimd.ui.fcs.length;
3829
3830 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3831 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3832
3833 break;
3834
3835 case 0x80:
3836
3837 uioc->opcode = MBOX_CMD;
3838 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3839
3840 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3841
3842 /*
3843 * Choose the xferlen bigger of input and output data
3844 */
3845 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3846 uioc_mimd.outlen : uioc_mimd.inlen;
3847
3848 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3849 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3850
3851 break;
3852
3853 default:
3854 return (-EINVAL);
3855
3856 }
3857
3858 return 0;
3859 }
3860
3861 /*
3862 * mega_n_to_m()
3863 * @arg - user address
3864 * @mc - mailbox command
3865 *
3866 * Updates the status information to the application, depending on application
3867 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3868 */
3869 static int
3870 mega_n_to_m(void __user *arg, megacmd_t *mc)
3871 {
3872 nitioctl_t __user *uiocp;
3873 megacmd_t __user *umc;
3874 mega_passthru __user *upthru;
3875 struct uioctl_t __user *uioc_mimd;
3876 char signature[8] = {0};
3877
3878 /*
3879 * check is the application conforms to NIT.
3880 */
3881 if( copy_from_user(signature, arg, 7) )
3882 return -EFAULT;
3883
3884 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3885
3886 uiocp = arg;
3887
3888 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3889 return (-EFAULT);
3890
3891 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3892
3893 umc = MBOX_P(uiocp);
3894
3895 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3896 return -EFAULT;
3897
3898 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3899 return (-EFAULT);
3900 }
3901 }
3902 else {
3903 uioc_mimd = arg;
3904
3905 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3906 return (-EFAULT);
3907
3908 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3909
3910 umc = (megacmd_t __user *)uioc_mimd->mbox;
3911
3912 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3913 return (-EFAULT);
3914
3915 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3916 return (-EFAULT);
3917 }
3918 }
3919
3920 return 0;
3921 }
3922
3923
3924 /*
3925 * MEGARAID 'FW' commands.
3926 */
3927
3928 /**
3929 * mega_is_bios_enabled()
3930 * @adapter - pointer to our soft state
3931 *
3932 * issue command to find out if the BIOS is enabled for this controller
3933 */
3934 static int
3935 mega_is_bios_enabled(adapter_t *adapter)
3936 {
3937 unsigned char raw_mbox[sizeof(struct mbox_out)];
3938 mbox_t *mbox;
3939 int ret;
3940
3941 mbox = (mbox_t *)raw_mbox;
3942
3943 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3944
3945 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3946
3947 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3948
3949 raw_mbox[0] = IS_BIOS_ENABLED;
3950 raw_mbox[2] = GET_BIOS;
3951
3952
3953 ret = issue_scb_block(adapter, raw_mbox);
3954
3955 return *(char *)adapter->mega_buffer;
3956 }
3957
3958
3959 /**
3960 * mega_enum_raid_scsi()
3961 * @adapter - pointer to our soft state
3962 *
3963 * Find out what channels are RAID/SCSI. This information is used to
3964 * differentiate the virtual channels and physical channels and to support
3965 * ROMB feature and non-disk devices.
3966 */
3967 static void
3968 mega_enum_raid_scsi(adapter_t *adapter)
3969 {
3970 unsigned char raw_mbox[sizeof(struct mbox_out)];
3971 mbox_t *mbox;
3972 int i;
3973
3974 mbox = (mbox_t *)raw_mbox;
3975
3976 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3977
3978 /*
3979 * issue command to find out what channels are raid/scsi
3980 */
3981 raw_mbox[0] = CHNL_CLASS;
3982 raw_mbox[2] = GET_CHNL_CLASS;
3983
3984 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3985
3986 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3987
3988 /*
3989 * Non-ROMB firmware fail this command, so all channels
3990 * must be shown RAID
3991 */
3992 adapter->mega_ch_class = 0xFF;
3993
3994 if(!issue_scb_block(adapter, raw_mbox)) {
3995 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3996
3997 }
3998
3999 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4000 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4001 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4002 i);
4003 }
4004 else {
4005 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4006 i);
4007 }
4008 }
4009
4010 return;
4011 }
4012
4013
4014 /**
4015 * mega_get_boot_drv()
4016 * @adapter - pointer to our soft state
4017 *
4018 * Find out which device is the boot device. Note, any logical drive or any
4019 * phyical device (e.g., a CDROM) can be designated as a boot device.
4020 */
4021 static void
4022 mega_get_boot_drv(adapter_t *adapter)
4023 {
4024 struct private_bios_data *prv_bios_data;
4025 unsigned char raw_mbox[sizeof(struct mbox_out)];
4026 mbox_t *mbox;
4027 u16 cksum = 0;
4028 u8 *cksum_p;
4029 u8 boot_pdrv;
4030 int i;
4031
4032 mbox = (mbox_t *)raw_mbox;
4033
4034 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4035
4036 raw_mbox[0] = BIOS_PVT_DATA;
4037 raw_mbox[2] = GET_BIOS_PVT_DATA;
4038
4039 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4040
4041 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4042
4043 adapter->boot_ldrv_enabled = 0;
4044 adapter->boot_ldrv = 0;
4045
4046 adapter->boot_pdrv_enabled = 0;
4047 adapter->boot_pdrv_ch = 0;
4048 adapter->boot_pdrv_tgt = 0;
4049
4050 if(issue_scb_block(adapter, raw_mbox) == 0) {
4051 prv_bios_data =
4052 (struct private_bios_data *)adapter->mega_buffer;
4053
4054 cksum = 0;
4055 cksum_p = (char *)prv_bios_data;
4056 for (i = 0; i < 14; i++ ) {
4057 cksum += (u16)(*cksum_p++);
4058 }
4059
4060 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4061
4062 /*
4063 * If MSB is set, a physical drive is set as boot
4064 * device
4065 */
4066 if( prv_bios_data->boot_drv & 0x80 ) {
4067 adapter->boot_pdrv_enabled = 1;
4068 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4069 adapter->boot_pdrv_ch = boot_pdrv / 16;
4070 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4071 }
4072 else {
4073 adapter->boot_ldrv_enabled = 1;
4074 adapter->boot_ldrv = prv_bios_data->boot_drv;
4075 }
4076 }
4077 }
4078
4079 }
4080
4081 /**
4082 * mega_support_random_del()
4083 * @adapter - pointer to our soft state
4084 *
4085 * Find out if this controller supports random deletion and addition of
4086 * logical drives
4087 */
4088 static int
4089 mega_support_random_del(adapter_t *adapter)
4090 {
4091 unsigned char raw_mbox[sizeof(struct mbox_out)];
4092 mbox_t *mbox;
4093 int rval;
4094
4095 mbox = (mbox_t *)raw_mbox;
4096
4097 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4098
4099 /*
4100 * issue command
4101 */
4102 raw_mbox[0] = FC_DEL_LOGDRV;
4103 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4104
4105 rval = issue_scb_block(adapter, raw_mbox);
4106
4107 return !rval;
4108 }
4109
4110
4111 /**
4112 * mega_support_ext_cdb()
4113 * @adapter - pointer to our soft state
4114 *
4115 * Find out if this firmware support cdblen > 10
4116 */
4117 static int
4118 mega_support_ext_cdb(adapter_t *adapter)
4119 {
4120 unsigned char raw_mbox[sizeof(struct mbox_out)];
4121 mbox_t *mbox;
4122 int rval;
4123
4124 mbox = (mbox_t *)raw_mbox;
4125
4126 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4127 /*
4128 * issue command to find out if controller supports extended CDBs.
4129 */
4130 raw_mbox[0] = 0xA4;
4131 raw_mbox[2] = 0x16;
4132
4133 rval = issue_scb_block(adapter, raw_mbox);
4134
4135 return !rval;
4136 }
4137
4138
4139 /**
4140 * mega_del_logdrv()
4141 * @adapter - pointer to our soft state
4142 * @logdrv - logical drive to be deleted
4143 *
4144 * Delete the specified logical drive. It is the responsibility of the user
4145 * app to let the OS know about this operation.
4146 */
4147 static int
4148 mega_del_logdrv(adapter_t *adapter, int logdrv)
4149 {
4150 unsigned long flags;
4151 scb_t *scb;
4152 int rval;
4153
4154 /*
4155 * Stop sending commands to the controller, queue them internally.
4156 * When deletion is complete, ISR will flush the queue.
4157 */
4158 atomic_set(&adapter->quiescent, 1);
4159
4160 /*
4161 * Wait till all the issued commands are complete and there are no
4162 * commands in the pending queue
4163 */
4164 while (atomic_read(&adapter->pend_cmds) > 0 ||
4165 !list_empty(&adapter->pending_list))
4166 msleep(1000); /* sleep for 1s */
4167
4168 rval = mega_do_del_logdrv(adapter, logdrv);
4169
4170 spin_lock_irqsave(&adapter->lock, flags);
4171
4172 /*
4173 * If delete operation was successful, add 0x80 to the logical drive
4174 * ids for commands in the pending queue.
4175 */
4176 if (adapter->read_ldidmap) {
4177 struct list_head *pos;
4178 list_for_each(pos, &adapter->pending_list) {
4179 scb = list_entry(pos, scb_t, list);
4180 if (scb->pthru->logdrv < 0x80 )
4181 scb->pthru->logdrv += 0x80;
4182 }
4183 }
4184
4185 atomic_set(&adapter->quiescent, 0);
4186
4187 mega_runpendq(adapter);
4188
4189 spin_unlock_irqrestore(&adapter->lock, flags);
4190
4191 return rval;
4192 }
4193
4194
4195 static int
4196 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4197 {
4198 megacmd_t mc;
4199 int rval;
4200
4201 memset( &mc, 0, sizeof(megacmd_t));
4202
4203 mc.cmd = FC_DEL_LOGDRV;
4204 mc.opcode = OP_DEL_LOGDRV;
4205 mc.subopcode = logdrv;
4206
4207 rval = mega_internal_command(adapter, LOCK_INT, &mc, NULL);
4208
4209 /* log this event */
4210 if(rval) {
4211 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4212 return rval;
4213 }
4214
4215 /*
4216 * After deleting first logical drive, the logical drives must be
4217 * addressed by adding 0x80 to the logical drive id.
4218 */
4219 adapter->read_ldidmap = 1;
4220
4221 return rval;
4222 }
4223
4224
4225 /**
4226 * mega_get_max_sgl()
4227 * @adapter - pointer to our soft state
4228 *
4229 * Find out the maximum number of scatter-gather elements supported by this
4230 * version of the firmware
4231 */
4232 static void
4233 mega_get_max_sgl(adapter_t *adapter)
4234 {
4235 unsigned char raw_mbox[sizeof(struct mbox_out)];
4236 mbox_t *mbox;
4237
4238 mbox = (mbox_t *)raw_mbox;
4239
4240 memset(mbox, 0, sizeof(raw_mbox));
4241
4242 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4243
4244 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4245
4246 raw_mbox[0] = MAIN_MISC_OPCODE;
4247 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4248
4249
4250 if( issue_scb_block(adapter, raw_mbox) ) {
4251 /*
4252 * f/w does not support this command. Choose the default value
4253 */
4254 adapter->sglen = MIN_SGLIST;
4255 }
4256 else {
4257 adapter->sglen = *((char *)adapter->mega_buffer);
4258
4259 /*
4260 * Make sure this is not more than the resources we are
4261 * planning to allocate
4262 */
4263 if ( adapter->sglen > MAX_SGLIST )
4264 adapter->sglen = MAX_SGLIST;
4265 }
4266
4267 return;
4268 }
4269
4270
4271 /**
4272 * mega_support_cluster()
4273 * @adapter - pointer to our soft state
4274 *
4275 * Find out if this firmware support cluster calls.
4276 */
4277 static int
4278 mega_support_cluster(adapter_t *adapter)
4279 {
4280 unsigned char raw_mbox[sizeof(struct mbox_out)];
4281 mbox_t *mbox;
4282
4283 mbox = (mbox_t *)raw_mbox;
4284
4285 memset(mbox, 0, sizeof(raw_mbox));
4286
4287 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4288
4289 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4290
4291 /*
4292 * Try to get the initiator id. This command will succeed iff the
4293 * clustering is available on this HBA.
4294 */
4295 raw_mbox[0] = MEGA_GET_TARGET_ID;
4296
4297 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4298
4299 /*
4300 * Cluster support available. Get the initiator target id.
4301 * Tell our id to mid-layer too.
4302 */
4303 adapter->this_id = *(u32 *)adapter->mega_buffer;
4304 adapter->host->this_id = adapter->this_id;
4305
4306 return 1;
4307 }
4308
4309 return 0;
4310 }
4311
4312
4313 /**
4314 * mega_adapinq()
4315 * @adapter - pointer to our soft state
4316 * @dma_handle - DMA address of the buffer
4317 *
4318 * Issue internal comamnds while interrupts are available.
4319 * We only issue direct mailbox commands from within the driver. ioctl()
4320 * interface using these routines can issue passthru commands.
4321 */
4322 static int
4323 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4324 {
4325 megacmd_t mc;
4326
4327 memset(&mc, 0, sizeof(megacmd_t));
4328
4329 if( adapter->flag & BOARD_40LD ) {
4330 mc.cmd = FC_NEW_CONFIG;
4331 mc.opcode = NC_SUBOP_ENQUIRY3;
4332 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4333 }
4334 else {
4335 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4336 }
4337
4338 mc.xferaddr = (u32)dma_handle;
4339
4340 if ( mega_internal_command(adapter, LOCK_INT, &mc, NULL) != 0 ) {
4341 return -1;
4342 }
4343
4344 return 0;
4345 }
4346
4347
4348 /** mega_internal_dev_inquiry()
4349 * @adapter - pointer to our soft state
4350 * @ch - channel for this device
4351 * @tgt - ID of this device
4352 * @buf_dma_handle - DMA address of the buffer
4353 *
4354 * Issue the scsi inquiry for the specified device.
4355 */
4356 static int
4357 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4358 dma_addr_t buf_dma_handle)
4359 {
4360 mega_passthru *pthru;
4361 dma_addr_t pthru_dma_handle;
4362 megacmd_t mc;
4363 int rval;
4364 struct pci_dev *pdev;
4365
4366
4367 /*
4368 * For all internal commands, the buffer must be allocated in <4GB
4369 * address range
4370 */
4371 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4372
4373 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4374 &pthru_dma_handle);
4375
4376 if( pthru == NULL ) {
4377 free_local_pdev(pdev);
4378 return -1;
4379 }
4380
4381 pthru->timeout = 2;
4382 pthru->ars = 1;
4383 pthru->reqsenselen = 14;
4384 pthru->islogical = 0;
4385
4386 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4387
4388 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4389
4390 pthru->cdblen = 6;
4391
4392 pthru->cdb[0] = INQUIRY;
4393 pthru->cdb[1] = 0;
4394 pthru->cdb[2] = 0;
4395 pthru->cdb[3] = 0;
4396 pthru->cdb[4] = 255;
4397 pthru->cdb[5] = 0;
4398
4399
4400 pthru->dataxferaddr = (u32)buf_dma_handle;
4401 pthru->dataxferlen = 256;
4402
4403 memset(&mc, 0, sizeof(megacmd_t));
4404
4405 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4406 mc.xferaddr = (u32)pthru_dma_handle;
4407
4408 rval = mega_internal_command(adapter, LOCK_INT, &mc, pthru);
4409
4410 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4411 pthru_dma_handle);
4412
4413 free_local_pdev(pdev);
4414
4415 return rval;
4416 }
4417
4418
4419 /**
4420 * mega_internal_command()
4421 * @adapter - pointer to our soft state
4422 * @ls - the scope of the exclusion lock.
4423 * @mc - the mailbox command
4424 * @pthru - Passthru structure for DCDB commands
4425 *
4426 * Issue the internal commands in interrupt mode.
4427 * The last argument is the address of the passthru structure if the command
4428 * to be fired is a passthru command
4429 *
4430 * lockscope specifies whether the caller has already acquired the lock. Of
4431 * course, the caller must know which lock we are talking about.
4432 *
4433 * Note: parameter 'pthru' is null for non-passthru commands.
4434 */
4435 static int
4436 mega_internal_command(adapter_t *adapter, lockscope_t ls, megacmd_t *mc,
4437 mega_passthru *pthru )
4438 {
4439 Scsi_Cmnd *scmd;
4440 struct scsi_device *sdev;
4441 unsigned long flags = 0;
4442 scb_t *scb;
4443 int rval;
4444
4445 /*
4446 * The internal commands share one command id and hence are
4447 * serialized. This is so because we want to reserve maximum number of
4448 * available command ids for the I/O commands.
4449 */
4450 down(&adapter->int_mtx);
4451
4452 scb = &adapter->int_scb;
4453 memset(scb, 0, sizeof(scb_t));
4454
4455 scmd = &adapter->int_scmd;
4456 memset(scmd, 0, sizeof(Scsi_Cmnd));
4457
4458 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4459 memset(sdev, 0, sizeof(struct scsi_device));
4460 scmd->device = sdev;
4461
4462 scmd->device->host = adapter->host;
4463 scmd->buffer = (void *)scb;
4464 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4465
4466 scb->state |= SCB_ACTIVE;
4467 scb->cmd = scmd;
4468
4469 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4470
4471 /*
4472 * Is it a passthru command
4473 */
4474 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4475
4476 scb->pthru = pthru;
4477 }
4478
4479 scb->idx = CMDID_INT_CMDS;
4480
4481 /*
4482 * Get the lock only if the caller has not acquired it already
4483 */
4484 if( ls == LOCK_INT ) spin_lock_irqsave(&adapter->lock, flags);
4485
4486 megaraid_queue(scmd, mega_internal_done);
4487
4488 if( ls == LOCK_INT ) spin_unlock_irqrestore(&adapter->lock, flags);
4489
4490 wait_for_completion(&adapter->int_waitq);
4491
4492 rval = scmd->result;
4493 mc->status = scmd->result;
4494 kfree(sdev);
4495
4496 /*
4497 * Print a debug message for all failed commands. Applications can use
4498 * this information.
4499 */
4500 if( scmd->result && trace_level ) {
4501 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4502 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4503 }
4504
4505 up(&adapter->int_mtx);
4506
4507 return rval;
4508 }
4509
4510
4511 /**
4512 * mega_internal_done()
4513 * @scmd - internal scsi command
4514 *
4515 * Callback routine for internal commands.
4516 */
4517 static void
4518 mega_internal_done(Scsi_Cmnd *scmd)
4519 {
4520 adapter_t *adapter;
4521
4522 adapter = (adapter_t *)scmd->device->host->hostdata;
4523
4524 complete(&adapter->int_waitq);
4525
4526 }
4527
4528
4529 static struct scsi_host_template megaraid_template = {
4530 .module = THIS_MODULE,
4531 .name = "MegaRAID",
4532 .proc_name = "megaraid",
4533 .info = megaraid_info,
4534 .queuecommand = megaraid_queue,
4535 .bios_param = megaraid_biosparam,
4536 .max_sectors = MAX_SECTORS_PER_IO,
4537 .can_queue = MAX_COMMANDS,
4538 .this_id = DEFAULT_INITIATOR_ID,
4539 .sg_tablesize = MAX_SGLIST,
4540 .cmd_per_lun = DEF_CMD_PER_LUN,
4541 .use_clustering = ENABLE_CLUSTERING,
4542 .eh_abort_handler = megaraid_abort,
4543 .eh_device_reset_handler = megaraid_reset,
4544 .eh_bus_reset_handler = megaraid_reset,
4545 .eh_host_reset_handler = megaraid_reset,
4546 };
4547
4548 static int __devinit
4549 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4550 {
4551 struct Scsi_Host *host;
4552 adapter_t *adapter;
4553 unsigned long mega_baseport, tbase, flag = 0;
4554 u16 subsysid, subsysvid;
4555 u8 pci_bus, pci_dev_func;
4556 int irq, i, j;
4557 int error = -ENODEV;
4558
4559 if (pci_enable_device(pdev))
4560 goto out;
4561 pci_set_master(pdev);
4562
4563 pci_bus = pdev->bus->number;
4564 pci_dev_func = pdev->devfn;
4565
4566 /*
4567 * The megaraid3 stuff reports the ID of the Intel part which is not
4568 * remotely specific to the megaraid
4569 */
4570 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4571 u16 magic;
4572 /*
4573 * Don't fall over the Compaq management cards using the same
4574 * PCI identifier
4575 */
4576 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4577 pdev->subsystem_device == 0xC000)
4578 return -ENODEV;
4579 /* Now check the magic signature byte */
4580 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4581 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4582 return -ENODEV;
4583 /* Ok it is probably a megaraid */
4584 }
4585
4586 /*
4587 * For these vendor and device ids, signature offsets are not
4588 * valid and 64 bit is implicit
4589 */
4590 if (id->driver_data & BOARD_64BIT)
4591 flag |= BOARD_64BIT;
4592 else {
4593 u32 magic64;
4594
4595 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4596 if (magic64 == HBA_SIGNATURE_64BIT)
4597 flag |= BOARD_64BIT;
4598 }
4599
4600 subsysvid = pdev->subsystem_vendor;
4601 subsysid = pdev->subsystem_device;
4602
4603 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4604 id->vendor, id->device, pci_bus);
4605
4606 printk("slot %d:func %d\n",
4607 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4608
4609 /* Read the base port and IRQ from PCI */
4610 mega_baseport = pci_resource_start(pdev, 0);
4611 irq = pdev->irq;
4612
4613 tbase = mega_baseport;
4614 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4615 flag |= BOARD_MEMMAP;
4616
4617 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4618 printk(KERN_WARNING "megaraid: mem region busy!\n");
4619 goto out_disable_device;
4620 }
4621
4622 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4623 if (!mega_baseport) {
4624 printk(KERN_WARNING
4625 "megaraid: could not map hba memory\n");
4626 goto out_release_region;
4627 }
4628 } else {
4629 flag |= BOARD_IOMAP;
4630 mega_baseport += 0x10;
4631
4632 if (!request_region(mega_baseport, 16, "megaraid"))
4633 goto out_disable_device;
4634 }
4635
4636 /* Initialize SCSI Host structure */
4637 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4638 if (!host)
4639 goto out_iounmap;
4640
4641 adapter = (adapter_t *)host->hostdata;
4642 memset(adapter, 0, sizeof(adapter_t));
4643
4644 printk(KERN_NOTICE
4645 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4646 host->host_no, mega_baseport, irq);
4647
4648 adapter->base = mega_baseport;
4649
4650 INIT_LIST_HEAD(&adapter->free_list);
4651 INIT_LIST_HEAD(&adapter->pending_list);
4652 INIT_LIST_HEAD(&adapter->completed_list);
4653
4654 adapter->flag = flag;
4655 spin_lock_init(&adapter->lock);
4656 scsi_assign_lock(host, &adapter->lock);
4657
4658 host->cmd_per_lun = max_cmd_per_lun;
4659 host->max_sectors = max_sectors_per_io;
4660
4661 adapter->dev = pdev;
4662 adapter->host = host;
4663
4664 adapter->host->irq = irq;
4665
4666 if (flag & BOARD_MEMMAP)
4667 adapter->host->base = tbase;
4668 else {
4669 adapter->host->io_port = tbase;
4670 adapter->host->n_io_port = 16;
4671 }
4672
4673 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4674
4675 /*
4676 * Allocate buffer to issue internal commands.
4677 */
4678 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4679 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4680 if (!adapter->mega_buffer) {
4681 printk(KERN_WARNING "megaraid: out of RAM.\n");
4682 goto out_host_put;
4683 }
4684
4685 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4686 if (!adapter->scb_list) {
4687 printk(KERN_WARNING "megaraid: out of RAM.\n");
4688 goto out_free_cmd_buffer;
4689 }
4690
4691 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4692 megaraid_isr_memmapped : megaraid_isr_iomapped,
4693 SA_SHIRQ, "megaraid", adapter)) {
4694 printk(KERN_WARNING
4695 "megaraid: Couldn't register IRQ %d!\n", irq);
4696 goto out_free_scb_list;
4697 }
4698
4699 if (mega_setup_mailbox(adapter))
4700 goto out_free_irq;
4701
4702 if (mega_query_adapter(adapter))
4703 goto out_free_mbox;
4704
4705 /*
4706 * Have checks for some buggy f/w
4707 */
4708 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4709 /*
4710 * Which firmware
4711 */
4712 if (!strcmp(adapter->fw_version, "3.00") ||
4713 !strcmp(adapter->fw_version, "3.01")) {
4714
4715 printk( KERN_WARNING
4716 "megaraid: Your card is a Dell PERC "
4717 "2/SC RAID controller with "
4718 "firmware\nmegaraid: 3.00 or 3.01. "
4719 "This driver is known to have "
4720 "corruption issues\nmegaraid: with "
4721 "those firmware versions on this "
4722 "specific card. In order\nmegaraid: "
4723 "to protect your data, please upgrade "
4724 "your firmware to version\nmegaraid: "
4725 "3.10 or later, available from the "
4726 "Dell Technical Support web\n"
4727 "megaraid: site at\nhttp://support."
4728 "dell.com/us/en/filelib/download/"
4729 "index.asp?fileid=2940\n"
4730 );
4731 }
4732 }
4733
4734 /*
4735 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4736 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4737 * support, since this firmware cannot handle 64 bit
4738 * addressing
4739 */
4740 if ((subsysvid == HP_SUBSYS_VID) &&
4741 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4742 /*
4743 * which firmware
4744 */
4745 if (!strcmp(adapter->fw_version, "H01.07") ||
4746 !strcmp(adapter->fw_version, "H01.08") ||
4747 !strcmp(adapter->fw_version, "H01.09") ) {
4748 printk(KERN_WARNING
4749 "megaraid: Firmware H.01.07, "
4750 "H.01.08, and H.01.09 on 1M/2M "
4751 "controllers\n"
4752 "megaraid: do not support 64 bit "
4753 "addressing.\nmegaraid: DISABLING "
4754 "64 bit support.\n");
4755 adapter->flag &= ~BOARD_64BIT;
4756 }
4757 }
4758
4759 if (mega_is_bios_enabled(adapter))
4760 mega_hbas[hba_count].is_bios_enabled = 1;
4761 mega_hbas[hba_count].hostdata_addr = adapter;
4762
4763 /*
4764 * Find out which channel is raid and which is scsi. This is
4765 * for ROMB support.
4766 */
4767 mega_enum_raid_scsi(adapter);
4768
4769 /*
4770 * Find out if a logical drive is set as the boot drive. If
4771 * there is one, will make that as the first logical drive.
4772 * ROMB: Do we have to boot from a physical drive. Then all
4773 * the physical drives would appear before the logical disks.
4774 * Else, all the physical drives would be exported to the mid
4775 * layer after logical drives.
4776 */
4777 mega_get_boot_drv(adapter);
4778
4779 if (adapter->boot_pdrv_enabled) {
4780 j = adapter->product_info.nchannels;
4781 for( i = 0; i < j; i++ )
4782 adapter->logdrv_chan[i] = 0;
4783 for( i = j; i < NVIRT_CHAN + j; i++ )
4784 adapter->logdrv_chan[i] = 1;
4785 } else {
4786 for (i = 0; i < NVIRT_CHAN; i++)
4787 adapter->logdrv_chan[i] = 1;
4788 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4789 adapter->logdrv_chan[i] = 0;
4790 adapter->mega_ch_class <<= NVIRT_CHAN;
4791 }
4792
4793 /*
4794 * Do we support random deletion and addition of logical
4795 * drives
4796 */
4797 adapter->read_ldidmap = 0; /* set it after first logdrv
4798 delete cmd */
4799 adapter->support_random_del = mega_support_random_del(adapter);
4800
4801 /* Initialize SCBs */
4802 if (mega_init_scb(adapter))
4803 goto out_free_mbox;
4804
4805 /*
4806 * Reset the pending commands counter
4807 */
4808 atomic_set(&adapter->pend_cmds, 0);
4809
4810 /*
4811 * Reset the adapter quiescent flag
4812 */
4813 atomic_set(&adapter->quiescent, 0);
4814
4815 hba_soft_state[hba_count] = adapter;
4816
4817 /*
4818 * Fill in the structure which needs to be passed back to the
4819 * application when it does an ioctl() for controller related
4820 * information.
4821 */
4822 i = hba_count;
4823
4824 mcontroller[i].base = mega_baseport;
4825 mcontroller[i].irq = irq;
4826 mcontroller[i].numldrv = adapter->numldrv;
4827 mcontroller[i].pcibus = pci_bus;
4828 mcontroller[i].pcidev = id->device;
4829 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4830 mcontroller[i].pciid = -1;
4831 mcontroller[i].pcivendor = id->vendor;
4832 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4833 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4834
4835
4836 /* Set the Mode of addressing to 64 bit if we can */
4837 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4838 pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
4839 adapter->has_64bit_addr = 1;
4840 } else {
4841 pci_set_dma_mask(pdev, 0xffffffff);
4842 adapter->has_64bit_addr = 0;
4843 }
4844
4845 init_MUTEX(&adapter->int_mtx);
4846 init_completion(&adapter->int_waitq);
4847
4848 adapter->this_id = DEFAULT_INITIATOR_ID;
4849 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4850
4851 #if MEGA_HAVE_CLUSTERING
4852 /*
4853 * Is cluster support enabled on this controller
4854 * Note: In a cluster the HBAs ( the initiators ) will have
4855 * different target IDs and we cannot assume it to be 7. Call
4856 * to mega_support_cluster() will get the target ids also if
4857 * the cluster support is available
4858 */
4859 adapter->has_cluster = mega_support_cluster(adapter);
4860 if (adapter->has_cluster) {
4861 printk(KERN_NOTICE
4862 "megaraid: Cluster driver, initiator id:%d\n",
4863 adapter->this_id);
4864 }
4865 #endif
4866
4867 pci_set_drvdata(pdev, host);
4868
4869 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4870
4871 error = scsi_add_host(host, &pdev->dev);
4872 if (error)
4873 goto out_free_mbox;
4874
4875 scsi_scan_host(host);
4876 hba_count++;
4877 return 0;
4878
4879 out_free_mbox:
4880 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4881 adapter->una_mbox64, adapter->una_mbox64_dma);
4882 out_free_irq:
4883 free_irq(adapter->host->irq, adapter);
4884 out_free_scb_list:
4885 kfree(adapter->scb_list);
4886 out_free_cmd_buffer:
4887 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4888 adapter->mega_buffer, adapter->buf_dma_handle);
4889 out_host_put:
4890 scsi_host_put(host);
4891 out_iounmap:
4892 if (flag & BOARD_MEMMAP)
4893 iounmap((void *)mega_baseport);
4894 out_release_region:
4895 if (flag & BOARD_MEMMAP)
4896 release_mem_region(tbase, 128);
4897 else
4898 release_region(mega_baseport, 16);
4899 out_disable_device:
4900 pci_disable_device(pdev);
4901 out:
4902 return error;
4903 }
4904
4905 static void
4906 __megaraid_shutdown(adapter_t *adapter)
4907 {
4908 u_char raw_mbox[sizeof(struct mbox_out)];
4909 mbox_t *mbox = (mbox_t *)raw_mbox;
4910 int i;
4911
4912 /* Flush adapter cache */
4913 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4914 raw_mbox[0] = FLUSH_ADAPTER;
4915
4916 free_irq(adapter->host->irq, adapter);
4917
4918 /* Issue a blocking (interrupts disabled) command to the card */
4919 issue_scb_block(adapter, raw_mbox);
4920
4921 /* Flush disks cache */
4922 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4923 raw_mbox[0] = FLUSH_SYSTEM;
4924
4925 /* Issue a blocking (interrupts disabled) command to the card */
4926 issue_scb_block(adapter, raw_mbox);
4927
4928 if (atomic_read(&adapter->pend_cmds) > 0)
4929 printk(KERN_WARNING "megaraid: pending commands!!\n");
4930
4931 /*
4932 * Have a delibrate delay to make sure all the caches are
4933 * actually flushed.
4934 */
4935 for (i = 0; i <= 10; i++)
4936 mdelay(1000);
4937 }
4938
4939 static void
4940 megaraid_remove_one(struct pci_dev *pdev)
4941 {
4942 struct Scsi_Host *host = pci_get_drvdata(pdev);
4943 adapter_t *adapter = (adapter_t *)host->hostdata;
4944 char buf[12] = { 0 };
4945
4946 scsi_remove_host(host);
4947
4948 __megaraid_shutdown(adapter);
4949
4950 /* Free our resources */
4951 if (adapter->flag & BOARD_MEMMAP) {
4952 iounmap((void *)adapter->base);
4953 release_mem_region(adapter->host->base, 128);
4954 } else
4955 release_region(adapter->base, 16);
4956
4957 mega_free_sgl(adapter);
4958
4959 #ifdef CONFIG_PROC_FS
4960 if (adapter->controller_proc_dir_entry) {
4961 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4962 remove_proc_entry("config",
4963 adapter->controller_proc_dir_entry);
4964 remove_proc_entry("mailbox",
4965 adapter->controller_proc_dir_entry);
4966 #if MEGA_HAVE_ENH_PROC
4967 remove_proc_entry("rebuild-rate",
4968 adapter->controller_proc_dir_entry);
4969 remove_proc_entry("battery-status",
4970 adapter->controller_proc_dir_entry);
4971
4972 remove_proc_entry("diskdrives-ch0",
4973 adapter->controller_proc_dir_entry);
4974 remove_proc_entry("diskdrives-ch1",
4975 adapter->controller_proc_dir_entry);
4976 remove_proc_entry("diskdrives-ch2",
4977 adapter->controller_proc_dir_entry);
4978 remove_proc_entry("diskdrives-ch3",
4979 adapter->controller_proc_dir_entry);
4980
4981 remove_proc_entry("raiddrives-0-9",
4982 adapter->controller_proc_dir_entry);
4983 remove_proc_entry("raiddrives-10-19",
4984 adapter->controller_proc_dir_entry);
4985 remove_proc_entry("raiddrives-20-29",
4986 adapter->controller_proc_dir_entry);
4987 remove_proc_entry("raiddrives-30-39",
4988 adapter->controller_proc_dir_entry);
4989 #endif
4990 sprintf(buf, "hba%d", adapter->host->host_no);
4991 remove_proc_entry(buf, mega_proc_dir_entry);
4992 }
4993 #endif
4994
4995 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4996 adapter->mega_buffer, adapter->buf_dma_handle);
4997 kfree(adapter->scb_list);
4998 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4999 adapter->una_mbox64, adapter->una_mbox64_dma);
5000
5001 scsi_host_put(host);
5002 pci_disable_device(pdev);
5003
5004 hba_count--;
5005 }
5006
5007 static void
5008 megaraid_shutdown(struct pci_dev *pdev)
5009 {
5010 struct Scsi_Host *host = pci_get_drvdata(pdev);
5011 adapter_t *adapter = (adapter_t *)host->hostdata;
5012
5013 __megaraid_shutdown(adapter);
5014 }
5015
5016 static struct pci_device_id megaraid_pci_tbl[] = {
5017 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DISCOVERY,
5018 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5019 {PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_PERC4_DI,
5020 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5021 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_PERC4_QC_VERDE,
5022 PCI_ANY_ID, PCI_ANY_ID, 0, 0, BOARD_64BIT},
5023 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5024 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5025 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5026 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5027 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3,
5028 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5029 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5030 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5031 {PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_AMI_MEGARAID3,
5032 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5033 {0,}
5034 };
5035 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5036
5037 static struct pci_driver megaraid_pci_driver = {
5038 .name = "megaraid",
5039 .id_table = megaraid_pci_tbl,
5040 .probe = megaraid_probe_one,
5041 .remove = __devexit_p(megaraid_remove_one),
5042 .shutdown = megaraid_shutdown,
5043 };
5044
5045 static int __init megaraid_init(void)
5046 {
5047 int error;
5048
5049 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5050 max_cmd_per_lun = MAX_CMD_PER_LUN;
5051 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5052 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5053
5054 #ifdef CONFIG_PROC_FS
5055 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5056 if (!mega_proc_dir_entry) {
5057 printk(KERN_WARNING
5058 "megaraid: failed to create megaraid root\n");
5059 }
5060 #endif
5061 error = pci_module_init(&megaraid_pci_driver);
5062 if (error) {
5063 #ifdef CONFIG_PROC_FS
5064 remove_proc_entry("megaraid", &proc_root);
5065 #endif
5066 return error;
5067 }
5068
5069 /*
5070 * Register the driver as a character device, for applications
5071 * to access it for ioctls.
5072 * First argument (major) to register_chrdev implies a dynamic
5073 * major number allocation.
5074 */
5075 major = register_chrdev(0, "megadev", &megadev_fops);
5076 if (!major) {
5077 printk(KERN_WARNING
5078 "megaraid: failed to register char device\n");
5079 }
5080
5081 return 0;
5082 }
5083
5084 static void __exit megaraid_exit(void)
5085 {
5086 /*
5087 * Unregister the character device interface to the driver.
5088 */
5089 unregister_chrdev(major, "megadev");
5090
5091 pci_unregister_driver(&megaraid_pci_driver);
5092
5093 #ifdef CONFIG_PROC_FS
5094 remove_proc_entry("megaraid", &proc_root);
5095 #endif
5096 }
5097
5098 module_init(megaraid_init);
5099 module_exit(megaraid_exit);
5100
5101 /* vi: set ts=8 sw=8 tw=78: */
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