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Add cycle_kernel_lock()
[linux-2.6-block.git] / drivers / scsi / megaraid.c
CommitLineData
1da177e4
LT		 1/*
2 *
3 * Linux MegaRAID device driver
4 *
3492b328 5 * Copyright (c) 2002 LSI Logic Corporation.
1da177e4
LT		 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 *
3492b328
JS		 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
1da177e4
LT		 22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <asm/uaccess.h>
38#include <asm/io.h>
8d115f84 39#include <linux/completion.h>
1da177e4
LT		 40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/reboot.h>
43#include <linux/module.h>
44#include <linux/list.h>
45#include <linux/interrupt.h>
46#include <linux/pci.h>
47#include <linux/init.h>
910638ae 48#include <linux/dma-mapping.h>
1da177e4
LT		 49#include <scsi/scsicam.h>
50
51#include "scsi.h"
52#include <scsi/scsi_host.h>
53
54#include "megaraid.h"
55
3492b328 56#define MEGARAID_MODULE_VERSION "2.00.4"
1da177e4 57
3492b328
JS		 58MODULE_AUTHOR ("sju@lsil.com");
59MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
1da177e4
LT		 60MODULE_LICENSE ("GPL");
61MODULE_VERSION(MEGARAID_MODULE_VERSION);
62
63static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
64module_param(max_cmd_per_lun, uint, 0);
65MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
66
67static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
68module_param(max_sectors_per_io, ushort, 0);
69MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70
71
72static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
73module_param(max_mbox_busy_wait, ushort, 0);
74MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
75
00769ec4
JG		 76#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
77#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
78#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
79#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
1da177e4
LT		 80
81/*
82 * Global variables
83 */
84
85static int hba_count;
86static adapter_t *hba_soft_state[MAX_CONTROLLERS];
87static struct proc_dir_entry *mega_proc_dir_entry;
88
89/* For controller re-ordering */
90static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
91
92/*
93 * The File Operations structure for the serial/ioctl interface of the driver
94 */
00977a59 95static const struct file_operations megadev_fops = {
1da177e4
LT		 96 .owner = THIS_MODULE,
97 .ioctl = megadev_ioctl,
98 .open = megadev_open,
99};
100
101/*
102 * Array to structures for storing the information about the controllers. This
103 * information is sent to the user level applications, when they do an ioctl
104 * for this information.
105 */
106static struct mcontroller mcontroller[MAX_CONTROLLERS];
107
108/* The current driver version */
109static u32 driver_ver = 0x02000000;
110
111/* major number used by the device for character interface */
112static int major;
113
114#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115
116
117/*
118 * Debug variable to print some diagnostic messages
119 */
120static int trace_level;
121
122/**
123 * mega_setup_mailbox()
124 * @adapter - pointer to our soft state
125 *
126 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 */
128static int
129mega_setup_mailbox(adapter_t *adapter)
130{
131 unsigned long align;
132
133 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
134 sizeof(mbox64_t), &adapter->una_mbox64_dma);
135
136 if( !adapter->una_mbox64 ) return -1;
137
138 adapter->mbox = &adapter->una_mbox64->mbox;
139
140 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
141 (~0UL ^ 0xFUL));
142
143 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
144
145 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
146
147 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
148
149 /*
150 * Register the mailbox if the controller is an io-mapped controller
151 */
152 if( adapter->flag & BOARD_IOMAP ) {
153
7d1abbe8 154 outb(adapter->mbox_dma & 0xFF,
1da177e4
LT		 155 adapter->host->io_port + MBOX_PORT0);
156
7d1abbe8 157 outb((adapter->mbox_dma >> 8) & 0xFF,
1da177e4
LT		 158 adapter->host->io_port + MBOX_PORT1);
159
7d1abbe8 160 outb((adapter->mbox_dma >> 16) & 0xFF,
1da177e4
LT		 161 adapter->host->io_port + MBOX_PORT2);
162
7d1abbe8 163 outb((adapter->mbox_dma >> 24) & 0xFF,
1da177e4
LT		 164 adapter->host->io_port + MBOX_PORT3);
165
7d1abbe8 166 outb(ENABLE_MBOX_BYTE,
1da177e4
LT		 167 adapter->host->io_port + ENABLE_MBOX_REGION);
168
169 irq_ack(adapter);
170
171 irq_enable(adapter);
172 }
173
174 return 0;
175}
176
177
178/*
179 * mega_query_adapter()
180 * @adapter - pointer to our soft state
181 *
182 * Issue the adapter inquiry commands to the controller and find out
183 * information and parameter about the devices attached
184 */
185static int
186mega_query_adapter(adapter_t *adapter)
187{
188 dma_addr_t prod_info_dma_handle;
189 mega_inquiry3 *inquiry3;
190 u8 raw_mbox[sizeof(struct mbox_out)];
191 mbox_t *mbox;
192 int retval;
193
194 /* Initialize adapter inquiry mailbox */
195
196 mbox = (mbox_t *)raw_mbox;
197
198 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
199 memset(&mbox->m_out, 0, sizeof(raw_mbox));
200
201 /*
202 * Try to issue Inquiry3 command
203 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
204 * update enquiry3 structure
205 */
206 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
207
208 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
209
210 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
211 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
212 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
213
214 /* Issue a blocking command to the card */
215 if ((retval = issue_scb_block(adapter, raw_mbox))) {
216 /* the adapter does not support 40ld */
217
218 mraid_ext_inquiry *ext_inq;
219 mraid_inquiry *inq;
220 dma_addr_t dma_handle;
221
222 ext_inq = pci_alloc_consistent(adapter->dev,
223 sizeof(mraid_ext_inquiry), &dma_handle);
224
225 if( ext_inq == NULL ) return -1;
226
227 inq = &ext_inq->raid_inq;
228
229 mbox->m_out.xferaddr = (u32)dma_handle;
230
231 /*issue old 0x04 command to adapter */
232 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
233
234 issue_scb_block(adapter, raw_mbox);
235
236 /*
237 * update Enquiry3 and ProductInfo structures with
238 * mraid_inquiry structure
239 */
240 mega_8_to_40ld(inq, inquiry3,
241 (mega_product_info *)&adapter->product_info);
242
243 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
244 ext_inq, dma_handle);
245
246 } else { /*adapter supports 40ld */
247 adapter->flag |= BOARD_40LD;
248
249 /*
250 * get product_info, which is static information and will be
251 * unchanged
252 */
253 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
254 &adapter->product_info,
255 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
256
257 mbox->m_out.xferaddr = prod_info_dma_handle;
258
259 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
260 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
261
262 if ((retval = issue_scb_block(adapter, raw_mbox)))
263 printk(KERN_WARNING
264 "megaraid: Product_info cmd failed with error: %d\n",
265 retval);
266
267 pci_unmap_single(adapter->dev, prod_info_dma_handle,
268 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
269 }
270
271
272 /*
273 * kernel scans the channels from 0 to <= max_channel
274 */
275 adapter->host->max_channel =
276 adapter->product_info.nchannels + NVIRT_CHAN -1;
277
278 adapter->host->max_id = 16; /* max targets per channel */
279
280 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
281
282 adapter->host->cmd_per_lun = max_cmd_per_lun;
283
284 adapter->numldrv = inquiry3->num_ldrv;
285
286 adapter->max_cmds = adapter->product_info.max_commands;
287
288 if(adapter->max_cmds > MAX_COMMANDS)
289 adapter->max_cmds = MAX_COMMANDS;
290
291 adapter->host->can_queue = adapter->max_cmds - 1;
292
293 /*
294 * Get the maximum number of scatter-gather elements supported by this
295 * firmware
296 */
297 mega_get_max_sgl(adapter);
298
299 adapter->host->sg_tablesize = adapter->sglen;
300
301
302 /* use HP firmware and bios version encoding */
303 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
304 sprintf (adapter->fw_version, "%c%d%d.%d%d",
305 adapter->product_info.fw_version[2],
306 adapter->product_info.fw_version[1] >> 8,
307 adapter->product_info.fw_version[1] & 0x0f,
308 adapter->product_info.fw_version[0] >> 8,
309 adapter->product_info.fw_version[0] & 0x0f);
310 sprintf (adapter->bios_version, "%c%d%d.%d%d",
311 adapter->product_info.bios_version[2],
312 adapter->product_info.bios_version[1] >> 8,
313 adapter->product_info.bios_version[1] & 0x0f,
314 adapter->product_info.bios_version[0] >> 8,
315 adapter->product_info.bios_version[0] & 0x0f);
316 } else {
317 memcpy(adapter->fw_version,
318 (char *)adapter->product_info.fw_version, 4);
319 adapter->fw_version[4] = 0;
320
321 memcpy(adapter->bios_version,
322 (char *)adapter->product_info.bios_version, 4);
323
324 adapter->bios_version[4] = 0;
325 }
326
327 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
328 adapter->fw_version, adapter->bios_version, adapter->numldrv);
329
330 /*
331 * Do we support extended (>10 bytes) cdbs
332 */
333 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
334 if (adapter->support_ext_cdb)
335 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
336
337
338 return 0;
339}
340
341/**
342 * mega_runpendq()
343 * @adapter - pointer to our soft state
344 *
345 * Runs through the list of pending requests.
346 */
347static inline void
348mega_runpendq(adapter_t *adapter)
349{
350 if(!list_empty(&adapter->pending_list))
351 __mega_runpendq(adapter);
352}
353
354/*
355 * megaraid_queue()
356 * @scmd - Issue this scsi command
357 * @done - the callback hook into the scsi mid-layer
358 *
359 * The command queuing entry point for the mid-layer.
360 */
361static int
362megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
363{
364 adapter_t *adapter;
365 scb_t *scb;
366 int busy=0;
cb0258a2 367 unsigned long flags;
1da177e4
LT		 368
369 adapter = (adapter_t *)scmd->device->host->hostdata;
370
371 scmd->scsi_done = done;
372
373
374 /*
375 * Allocate and build a SCB request
376 * busy flag will be set if mega_build_cmd() command could not
377 * allocate scb. We will return non-zero status in that case.
378 * NOTE: scb can be null even though certain commands completed
379 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
380 * return 0 in that case.
381 */
382
cb0258a2 383 spin_lock_irqsave(&adapter->lock, flags);
1da177e4 384 scb = mega_build_cmd(adapter, scmd, &busy);
238f9b06
CH		 385 if (!scb)
386 goto out;
1da177e4 387
238f9b06
CH		 388 scb->state |= SCB_PENDQ;
389 list_add_tail(&scb->list, &adapter->pending_list);
1da177e4 390
238f9b06
CH		 391 /*
392 * Check if the HBA is in quiescent state, e.g., during a
393 * delete logical drive opertion. If it is, don't run
394 * the pending_list.
395 */
396 if (atomic_read(&adapter->quiescent) == 0)
397 mega_runpendq(adapter);
1da177e4 398
238f9b06
CH		 399 busy = 0;
400 out:
401 spin_unlock_irqrestore(&adapter->lock, flags);
1da177e4
LT		 402 return busy;
403}
404
405/**
406 * mega_allocate_scb()
407 * @adapter - pointer to our soft state
408 * @cmd - scsi command from the mid-layer
409 *
410 * Allocate a SCB structure. This is the central structure for controller
411 * commands.
412 */
413static inline scb_t *
414mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
415{
416 struct list_head *head = &adapter->free_list;
417 scb_t *scb;
418
419 /* Unlink command from Free List */
420 if( !list_empty(head) ) {
421
422 scb = list_entry(head->next, scb_t, list);
423
424 list_del_init(head->next);
425
426 scb->state = SCB_ACTIVE;
427 scb->cmd = cmd;
428 scb->dma_type = MEGA_DMA_TYPE_NONE;
429
430 return scb;
431 }
432
433 return NULL;
434}
435
436/**
437 * mega_get_ldrv_num()
438 * @adapter - pointer to our soft state
439 * @cmd - scsi mid layer command
440 * @channel - channel on the controller
441 *
442 * Calculate the logical drive number based on the information in scsi command
443 * and the channel number.
444 */
445static inline int
446mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
447{
448 int tgt;
449 int ldrv_num;
450
451 tgt = cmd->device->id;
452
453 if ( tgt > adapter->this_id )
454 tgt--; /* we do not get inquires for initiator id */
455
456 ldrv_num = (channel * 15) + tgt;
457
458
459 /*
460 * If we have a logical drive with boot enabled, project it first
461 */
462 if( adapter->boot_ldrv_enabled ) {
463 if( ldrv_num == 0 ) {
464 ldrv_num = adapter->boot_ldrv;
465 }
466 else {
467 if( ldrv_num <= adapter->boot_ldrv ) {
468 ldrv_num--;
469 }
470 }
471 }
472
473 /*
474 * If "delete logical drive" feature is enabled on this controller.
475 * Do only if at least one delete logical drive operation was done.
476 *
477 * Also, after logical drive deletion, instead of logical drive number,
478 * the value returned should be 0x80+logical drive id.
479 *
480 * These is valid only for IO commands.
481 */
482
483 if (adapter->support_random_del && adapter->read_ldidmap )
484 switch (cmd->cmnd[0]) {
485 case READ_6: /* fall through */
486 case WRITE_6: /* fall through */
487 case READ_10: /* fall through */
488 case WRITE_10:
489 ldrv_num += 0x80;
490 }
491
492 return ldrv_num;
493}
494
495/**
496 * mega_build_cmd()
497 * @adapter - pointer to our soft state
498 * @cmd - Prepare using this scsi command
499 * @busy - busy flag if no resources
500 *
501 * Prepares a command and scatter gather list for the controller. This routine
502 * also finds out if the commands is intended for a logical drive or a
503 * physical device and prepares the controller command accordingly.
504 *
505 * We also re-order the logical drives and physical devices based on their
506 * boot settings.
507 */
508static scb_t *
509mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
510{
511 mega_ext_passthru *epthru;
512 mega_passthru *pthru;
513 scb_t *scb;
514 mbox_t *mbox;
515 long seg;
516 char islogical;
517 int max_ldrv_num;
518 int channel = 0;
519 int target = 0;
520 int ldrv_num = 0; /* logical drive number */
521
522
523 /*
524 * filter the internal and ioctl commands
525 */
3f6270ef
FT		 526 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
527 return (scb_t *)cmd->host_scribble;
1da177e4
LT		 528
529 /*
530 * We know what channels our logical drives are on - mega_find_card()
531 */
532 islogical = adapter->logdrv_chan[cmd->device->channel];
533
534 /*
535 * The theory: If physical drive is chosen for boot, all the physical
536 * devices are exported before the logical drives, otherwise physical
537 * devices are pushed after logical drives, in which case - Kernel sees
538 * the physical devices on virtual channel which is obviously converted
539 * to actual channel on the HBA.
540 */
541 if( adapter->boot_pdrv_enabled ) {
542 if( islogical ) {
543 /* logical channel */
544 channel = cmd->device->channel -
545 adapter->product_info.nchannels;
546 }
547 else {
548 /* this is physical channel */
549 channel = cmd->device->channel;
550 target = cmd->device->id;
551
552 /*
553 * boot from a physical disk, that disk needs to be
554 * exposed first IF both the channels are SCSI, then
555 * booting from the second channel is not allowed.
556 */
557 if( target == 0 ) {
558 target = adapter->boot_pdrv_tgt;
559 }
560 else if( target == adapter->boot_pdrv_tgt ) {
561 target = 0;
562 }
563 }
564 }
565 else {
566 if( islogical ) {
567 /* this is the logical channel */
568 channel = cmd->device->channel;
569 }
570 else {
571 /* physical channel */
572 channel = cmd->device->channel - NVIRT_CHAN;
573 target = cmd->device->id;
574 }
575 }
576
577
578 if(islogical) {
579
580 /* have just LUN 0 for each target on virtual channels */
581 if (cmd->device->lun) {
582 cmd->result = (DID_BAD_TARGET << 16);
583 cmd->scsi_done(cmd);
584 return NULL;
585 }
586
587 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
588
589
590 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
591 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
592
593 /*
594 * max_ldrv_num increases by 0x80 if some logical drive was
595 * deleted.
596 */
597 if(adapter->read_ldidmap)
598 max_ldrv_num += 0x80;
599
600 if(ldrv_num > max_ldrv_num ) {
601 cmd->result = (DID_BAD_TARGET << 16);
602 cmd->scsi_done(cmd);
603 return NULL;
604 }
605
606 }
607 else {
608 if( cmd->device->lun > 7) {
609 /*
610 * Do not support lun >7 for physically accessed
611 * devices
612 */
613 cmd->result = (DID_BAD_TARGET << 16);
614 cmd->scsi_done(cmd);
615 return NULL;
616 }
617 }
618
619 /*
620 *
621 * Logical drive commands
622 *
623 */
624 if(islogical) {
625 switch (cmd->cmnd[0]) {
626 case TEST_UNIT_READY:
1da177e4
LT		 627#if MEGA_HAVE_CLUSTERING
628 /*
629 * Do we support clustering and is the support enabled
630 * If no, return success always
631 */
632 if( !adapter->has_cluster ) {
633 cmd->result = (DID_OK << 16);
634 cmd->scsi_done(cmd);
635 return NULL;
636 }
637
638 if(!(scb = mega_allocate_scb(adapter, cmd))) {
639 *busy = 1;
640 return NULL;
641 }
642
643 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
644 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
645 scb->raw_mbox[3] = ldrv_num;
646
647 scb->dma_direction = PCI_DMA_NONE;
648
649 return scb;
650#else
651 cmd->result = (DID_OK << 16);
652 cmd->scsi_done(cmd);
653 return NULL;
654#endif
655
51c928c3
JB		 656 case MODE_SENSE: {
657 char *buf;
3f6270ef 658 struct scatterlist *sg;
51c928c3 659
3f6270ef 660 sg = scsi_sglist(cmd);
45711f1a 661 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
51c928c3 662
f0353301 663 memset(buf, 0, cmd->cmnd[4]);
3f6270ef 664 kunmap_atomic(buf - sg->offset, KM_IRQ0);
51c928c3 665
1da177e4
LT		 666 cmd->result = (DID_OK << 16);
667 cmd->scsi_done(cmd);
668 return NULL;
51c928c3 669 }
1da177e4
LT		 670
671 case READ_CAPACITY:
672 case INQUIRY:
673
674 if(!(adapter->flag & (1L << cmd->device->channel))) {
675
676 printk(KERN_NOTICE
677 "scsi%d: scanning scsi channel %d ",
678 adapter->host->host_no,
679 cmd->device->channel);
680 printk("for logical drives.\n");
681
682 adapter->flag |= (1L << cmd->device->channel);
683 }
684
685 /* Allocate a SCB and initialize passthru */
686 if(!(scb = mega_allocate_scb(adapter, cmd))) {
687 *busy = 1;
688 return NULL;
689 }
690 pthru = scb->pthru;
691
692 mbox = (mbox_t *)scb->raw_mbox;
693 memset(mbox, 0, sizeof(scb->raw_mbox));
694 memset(pthru, 0, sizeof(mega_passthru));
695
696 pthru->timeout = 0;
697 pthru->ars = 1;
698 pthru->reqsenselen = 14;
699 pthru->islogical = 1;
700 pthru->logdrv = ldrv_num;
701 pthru->cdblen = cmd->cmd_len;
702 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
703
704 if( adapter->has_64bit_addr ) {
705 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
706 }
707 else {
708 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
709 }
710
711 scb->dma_direction = PCI_DMA_FROMDEVICE;
712
713 pthru->numsgelements = mega_build_sglist(adapter, scb,
714 &pthru->dataxferaddr, &pthru->dataxferlen);
715
716 mbox->m_out.xferaddr = scb->pthru_dma_addr;
717
718 return scb;
719
720 case READ_6:
721 case WRITE_6:
722 case READ_10:
723 case WRITE_10:
724 case READ_12:
725 case WRITE_12:
726
727 /* Allocate a SCB and initialize mailbox */
728 if(!(scb = mega_allocate_scb(adapter, cmd))) {
729 *busy = 1;
730 return NULL;
731 }
732 mbox = (mbox_t *)scb->raw_mbox;
733
734 memset(mbox, 0, sizeof(scb->raw_mbox));
735 mbox->m_out.logdrv = ldrv_num;
736
737 /*
738 * A little hack: 2nd bit is zero for all scsi read
739 * commands and is set for all scsi write commands
740 */
741 if( adapter->has_64bit_addr ) {
742 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
743 MEGA_MBOXCMD_LWRITE64:
744 MEGA_MBOXCMD_LREAD64 ;
745 }
746 else {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE:
749 MEGA_MBOXCMD_LREAD ;
750 }
751
752 /*
753 * 6-byte READ(0x08) or WRITE(0x0A) cdb
754 */
755 if( cmd->cmd_len == 6 ) {
756 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
757 mbox->m_out.lba =
758 ((u32)cmd->cmnd[1] << 16) |
759 ((u32)cmd->cmnd[2] << 8) |
760 (u32)cmd->cmnd[3];
761
762 mbox->m_out.lba &= 0x1FFFFF;
763
764#if MEGA_HAVE_STATS
765 /*
766 * Take modulo 0x80, since the logical drive
767 * number increases by 0x80 when a logical
768 * drive was deleted
769 */
770 if (*cmd->cmnd == READ_6) {
771 adapter->nreads[ldrv_num%0x80]++;
772 adapter->nreadblocks[ldrv_num%0x80] +=
773 mbox->m_out.numsectors;
774 } else {
775 adapter->nwrites[ldrv_num%0x80]++;
776 adapter->nwriteblocks[ldrv_num%0x80] +=
777 mbox->m_out.numsectors;
778 }
779#endif
780 }
781
782 /*
783 * 10-byte READ(0x28) or WRITE(0x2A) cdb
784 */
785 if( cmd->cmd_len == 10 ) {
786 mbox->m_out.numsectors =
787 (u32)cmd->cmnd[8] |
788 ((u32)cmd->cmnd[7] << 8);
789 mbox->m_out.lba =
790 ((u32)cmd->cmnd[2] << 24) |
791 ((u32)cmd->cmnd[3] << 16) |
792 ((u32)cmd->cmnd[4] << 8) |
793 (u32)cmd->cmnd[5];
794
795#if MEGA_HAVE_STATS
796 if (*cmd->cmnd == READ_10) {
797 adapter->nreads[ldrv_num%0x80]++;
798 adapter->nreadblocks[ldrv_num%0x80] +=
799 mbox->m_out.numsectors;
800 } else {
801 adapter->nwrites[ldrv_num%0x80]++;
802 adapter->nwriteblocks[ldrv_num%0x80] +=
803 mbox->m_out.numsectors;
804 }
805#endif
806 }
807
808 /*
809 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
810 */
811 if( cmd->cmd_len == 12 ) {
812 mbox->m_out.lba =
813 ((u32)cmd->cmnd[2] << 24) |
814 ((u32)cmd->cmnd[3] << 16) |
815 ((u32)cmd->cmnd[4] << 8) |
816 (u32)cmd->cmnd[5];
817
818 mbox->m_out.numsectors =
819 ((u32)cmd->cmnd[6] << 24) |
820 ((u32)cmd->cmnd[7] << 16) |
821 ((u32)cmd->cmnd[8] << 8) |
822 (u32)cmd->cmnd[9];
823
824#if MEGA_HAVE_STATS
825 if (*cmd->cmnd == READ_12) {
826 adapter->nreads[ldrv_num%0x80]++;
827 adapter->nreadblocks[ldrv_num%0x80] +=
828 mbox->m_out.numsectors;
829 } else {
830 adapter->nwrites[ldrv_num%0x80]++;
831 adapter->nwriteblocks[ldrv_num%0x80] +=
832 mbox->m_out.numsectors;
833 }
834#endif
835 }
836
837 /*
838 * If it is a read command
839 */
840 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
841 scb->dma_direction = PCI_DMA_FROMDEVICE;
842 }
843 else {
844 scb->dma_direction = PCI_DMA_TODEVICE;
845 }
846
847 /* Calculate Scatter-Gather info */
848 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
849 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
850
851 return scb;
852
853#if MEGA_HAVE_CLUSTERING
854 case RESERVE: /* Fall through */
855 case RELEASE:
856
857 /*
858 * Do we support clustering and is the support enabled
859 */
860 if( ! adapter->has_cluster ) {
861
862 cmd->result = (DID_BAD_TARGET << 16);
863 cmd->scsi_done(cmd);
864 return NULL;
865 }
866
867 /* Allocate a SCB and initialize mailbox */
868 if(!(scb = mega_allocate_scb(adapter, cmd))) {
869 *busy = 1;
870 return NULL;
871 }
872
873 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
874 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
875 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
876
877 scb->raw_mbox[3] = ldrv_num;
878
879 scb->dma_direction = PCI_DMA_NONE;
880
881 return scb;
882#endif
883
884 default:
885 cmd->result = (DID_BAD_TARGET << 16);
886 cmd->scsi_done(cmd);
887 return NULL;
888 }
889 }
890
891 /*
892 * Passthru drive commands
893 */
894 else {
895 /* Allocate a SCB and initialize passthru */
896 if(!(scb = mega_allocate_scb(adapter, cmd))) {
897 *busy = 1;
898 return NULL;
899 }
900
901 mbox = (mbox_t *)scb->raw_mbox;
902 memset(mbox, 0, sizeof(scb->raw_mbox));
903
904 if( adapter->support_ext_cdb ) {
905
906 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
907 channel, target);
908
909 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
910
911 mbox->m_out.xferaddr = scb->epthru_dma_addr;
912
913 }
914 else {
915
916 pthru = mega_prepare_passthru(adapter, scb, cmd,
917 channel, target);
918
919 /* Initialize mailbox */
920 if( adapter->has_64bit_addr ) {
921 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
922 }
923 else {
924 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
925 }
926
927 mbox->m_out.xferaddr = scb->pthru_dma_addr;
928
929 }
930 return scb;
931 }
932 return NULL;
933}
934
935
936/**
937 * mega_prepare_passthru()
938 * @adapter - pointer to our soft state
939 * @scb - our scsi control block
940 * @cmd - scsi command from the mid-layer
941 * @channel - actual channel on the controller
942 * @target - actual id on the controller.
943 *
944 * prepare a command for the scsi physical devices.
945 */
946static mega_passthru *
947mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
948 int channel, int target)
949{
950 mega_passthru *pthru;
951
952 pthru = scb->pthru;
953 memset(pthru, 0, sizeof (mega_passthru));
954
955 /* 0=6sec/1=60sec/2=10min/3=3hrs */
956 pthru->timeout = 2;
957
958 pthru->ars = 1;
959 pthru->reqsenselen = 14;
960 pthru->islogical = 0;
961
962 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
963
964 pthru->target = (adapter->flag & BOARD_40LD) ?
965 (channel << 4) | target : target;
966
967 pthru->cdblen = cmd->cmd_len;
968 pthru->logdrv = cmd->device->lun;
969
970 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
971
972 /* Not sure about the direction */
973 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
974
975 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
976 switch (cmd->cmnd[0]) {
977 case INQUIRY:
978 case READ_CAPACITY:
979 if(!(adapter->flag & (1L << cmd->device->channel))) {
980
981 printk(KERN_NOTICE
982 "scsi%d: scanning scsi channel %d [P%d] ",
983 adapter->host->host_no,
984 cmd->device->channel, channel);
985 printk("for physical devices.\n");
986
987 adapter->flag |= (1L << cmd->device->channel);
988 }
989 /* Fall through */
990 default:
991 pthru->numsgelements = mega_build_sglist(adapter, scb,
992 &pthru->dataxferaddr, &pthru->dataxferlen);
993 break;
994 }
995 return pthru;
996}
997
998
999/**
1000 * mega_prepare_extpassthru()
1001 * @adapter - pointer to our soft state
1002 * @scb - our scsi control block
1003 * @cmd - scsi command from the mid-layer
1004 * @channel - actual channel on the controller
1005 * @target - actual id on the controller.
1006 *
1007 * prepare a command for the scsi physical devices. This rountine prepares
1008 * commands for devices which can take extended CDBs (>10 bytes)
1009 */
1010static mega_ext_passthru *
1011mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1012 int channel, int target)
1013{
1014 mega_ext_passthru *epthru;
1015
1016 epthru = scb->epthru;
1017 memset(epthru, 0, sizeof(mega_ext_passthru));
1018
1019 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1020 epthru->timeout = 2;
1021
1022 epthru->ars = 1;
1023 epthru->reqsenselen = 14;
1024 epthru->islogical = 0;
1025
1026 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1027 epthru->target = (adapter->flag & BOARD_40LD) ?
1028 (channel << 4) | target : target;
1029
1030 epthru->cdblen = cmd->cmd_len;
1031 epthru->logdrv = cmd->device->lun;
1032
1033 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1034
1035 /* Not sure about the direction */
1036 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1037
1038 switch(cmd->cmnd[0]) {
1039 case INQUIRY:
1040 case READ_CAPACITY:
1041 if(!(adapter->flag & (1L << cmd->device->channel))) {
1042
1043 printk(KERN_NOTICE
1044 "scsi%d: scanning scsi channel %d [P%d] ",
1045 adapter->host->host_no,
1046 cmd->device->channel, channel);
1047 printk("for physical devices.\n");
1048
1049 adapter->flag |= (1L << cmd->device->channel);
1050 }
1051 /* Fall through */
1052 default:
1053 epthru->numsgelements = mega_build_sglist(adapter, scb,
1054 &epthru->dataxferaddr, &epthru->dataxferlen);
1055 break;
1056 }
1057
1058 return epthru;
1059}
1060
1061static void
1062__mega_runpendq(adapter_t *adapter)
1063{
1064 scb_t *scb;
1065 struct list_head *pos, *next;
1066
1067 /* Issue any pending commands to the card */
1068 list_for_each_safe(pos, next, &adapter->pending_list) {
1069
1070 scb = list_entry(pos, scb_t, list);
1071
1072 if( !(scb->state & SCB_ISSUED) ) {
1073
1074 if( issue_scb(adapter, scb) != 0 )
1075 return;
1076 }
1077 }
1078
1079 return;
1080}
1081
1082
1083/**
1084 * issue_scb()
1085 * @adapter - pointer to our soft state
1086 * @scb - scsi control block
1087 *
1088 * Post a command to the card if the mailbox is available, otherwise return
1089 * busy. We also take the scb from the pending list if the mailbox is
1090 * available.
1091 */
1092static int
1093issue_scb(adapter_t *adapter, scb_t *scb)
1094{
1095 volatile mbox64_t *mbox64 = adapter->mbox64;
1096 volatile mbox_t *mbox = adapter->mbox;
1097 unsigned int i = 0;
1098
1099 if(unlikely(mbox->m_in.busy)) {
1100 do {
1101 udelay(1);
1102 i++;
1103 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1104
1105 if(mbox->m_in.busy) return -1;
1106 }
1107
1108 /* Copy mailbox data into host structure */
1109 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1110 sizeof(struct mbox_out));
1111
1112 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1113 mbox->m_in.busy = 1; /* Set busy */
1114
1115
1116 /*
1117 * Increment the pending queue counter
1118 */
1119 atomic_inc(&adapter->pend_cmds);
1120
1121 switch (mbox->m_out.cmd) {
1122 case MEGA_MBOXCMD_LREAD64:
1123 case MEGA_MBOXCMD_LWRITE64:
1124 case MEGA_MBOXCMD_PASSTHRU64:
1125 case MEGA_MBOXCMD_EXTPTHRU:
1126 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1127 mbox64->xfer_segment_hi = 0;
1128 mbox->m_out.xferaddr = 0xFFFFFFFF;
1129 break;
1130 default:
1131 mbox64->xfer_segment_lo = 0;
1132 mbox64->xfer_segment_hi = 0;
1133 }
1134
1135 /*
1136 * post the command
1137 */
1138 scb->state |= SCB_ISSUED;
1139
1140 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1141 mbox->m_in.poll = 0;
1142 mbox->m_in.ack = 0;
1143 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1144 }
1145 else {
1146 irq_enable(adapter);
1147 issue_command(adapter);
1148 }
1149
1150 return 0;
1151}
1152
1153/*
1154 * Wait until the controller's mailbox is available
1155 */
1156static inline int
1157mega_busywait_mbox (adapter_t *adapter)
1158{
1159 if (adapter->mbox->m_in.busy)
1160 return __mega_busywait_mbox(adapter);
1161 return 0;
1162}
1163
1164/**
1165 * issue_scb_block()
1166 * @adapter - pointer to our soft state
1167 * @raw_mbox - the mailbox
1168 *
1169 * Issue a scb in synchronous and non-interrupt mode
1170 */
1171static int
1172issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1173{
1174 volatile mbox64_t *mbox64 = adapter->mbox64;
1175 volatile mbox_t *mbox = adapter->mbox;
1176 u8 byte;
1177
1178 /* Wait until mailbox is free */
1179 if(mega_busywait_mbox (adapter))
1180 goto bug_blocked_mailbox;
1181
1182 /* Copy mailbox data into host structure */
1183 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1184 mbox->m_out.cmdid = 0xFE;
1185 mbox->m_in.busy = 1;
1186
1187 switch (raw_mbox[0]) {
1188 case MEGA_MBOXCMD_LREAD64:
1189 case MEGA_MBOXCMD_LWRITE64:
1190 case MEGA_MBOXCMD_PASSTHRU64:
1191 case MEGA_MBOXCMD_EXTPTHRU:
1192 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1193 mbox64->xfer_segment_hi = 0;
1194 mbox->m_out.xferaddr = 0xFFFFFFFF;
1195 break;
1196 default:
1197 mbox64->xfer_segment_lo = 0;
1198 mbox64->xfer_segment_hi = 0;
1199 }
1200
1201 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1202 mbox->m_in.poll = 0;
1203 mbox->m_in.ack = 0;
1204 mbox->m_in.numstatus = 0xFF;
1205 mbox->m_in.status = 0xFF;
1206 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1207
1208 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1209 cpu_relax();
1210
1211 mbox->m_in.numstatus = 0xFF;
1212
1213 while( (volatile u8)mbox->m_in.poll != 0x77 )
1214 cpu_relax();
1215
1216 mbox->m_in.poll = 0;
1217 mbox->m_in.ack = 0x77;
1218
1219 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1220
1221 while(RDINDOOR(adapter) & 0x2)
1222 cpu_relax();
1223 }
1224 else {
1225 irq_disable(adapter);
1226 issue_command(adapter);
1227
1228 while (!((byte = irq_state(adapter)) & INTR_VALID))
1229 cpu_relax();
1230
1231 set_irq_state(adapter, byte);
1232 irq_enable(adapter);
1233 irq_ack(adapter);
1234 }
1235
1236 return mbox->m_in.status;
1237
1238bug_blocked_mailbox:
1239 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1240 udelay (1000);
1241 return -1;
1242}
1243
1244
1245/**
1246 * megaraid_isr_iomapped()
1247 * @irq - irq
1248 * @devp - pointer to our soft state
1da177e4
LT		 1249 *
1250 * Interrupt service routine for io-mapped controllers.
1251 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1252 * and service the completed commands.
1253 */
1254static irqreturn_t
7d12e780 1255megaraid_isr_iomapped(int irq, void *devp)
1da177e4
LT		 1256{
1257 adapter_t *adapter = devp;
1258 unsigned long flags;
1259 u8 status;
1260 u8 nstatus;
1261 u8 completed[MAX_FIRMWARE_STATUS];
1262 u8 byte;
1263 int handled = 0;
1264
1265
1266 /*
1267 * loop till F/W has more commands for us to complete.
1268 */
1269 spin_lock_irqsave(&adapter->lock, flags);
1270
1271 do {
1272 /* Check if a valid interrupt is pending */
1273 byte = irq_state(adapter);
1274 if( (byte & VALID_INTR_BYTE) == 0 ) {
1275 /*
1276 * No more pending commands
1277 */
1278 goto out_unlock;
1279 }
1280 set_irq_state(adapter, byte);
1281
1282 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1283 == 0xFF)
1284 cpu_relax();
1285 adapter->mbox->m_in.numstatus = 0xFF;
1286
1287 status = adapter->mbox->m_in.status;
1288
1289 /*
1290 * decrement the pending queue counter
1291 */
1292 atomic_sub(nstatus, &adapter->pend_cmds);
1293
1294 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1295 nstatus);
1296
1297 /* Acknowledge interrupt */
1298 irq_ack(adapter);
1299
1300 mega_cmd_done(adapter, completed, nstatus, status);
1301
1302 mega_rundoneq(adapter);
1303
1304 handled = 1;
1305
1306 /* Loop through any pending requests */
1307 if(atomic_read(&adapter->quiescent) == 0) {
1308 mega_runpendq(adapter);
1309 }
1310
1311 } while(1);
1312
1313 out_unlock:
1314
1315 spin_unlock_irqrestore(&adapter->lock, flags);
1316
1317 return IRQ_RETVAL(handled);
1318}
1319
1320
1321/**
1322 * megaraid_isr_memmapped()
1323 * @irq - irq
1324 * @devp - pointer to our soft state
1da177e4
LT		 1325 *
1326 * Interrupt service routine for memory-mapped controllers.
1327 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1328 * and service the completed commands.
1329 */
1330static irqreturn_t
7d12e780 1331megaraid_isr_memmapped(int irq, void *devp)
1da177e4
LT		 1332{
1333 adapter_t *adapter = devp;
1334 unsigned long flags;
1335 u8 status;
1336 u32 dword = 0;
1337 u8 nstatus;
1338 u8 completed[MAX_FIRMWARE_STATUS];
1339 int handled = 0;
1340
1341
1342 /*
1343 * loop till F/W has more commands for us to complete.
1344 */
1345 spin_lock_irqsave(&adapter->lock, flags);
1346
1347 do {
1348 /* Check if a valid interrupt is pending */
1349 dword = RDOUTDOOR(adapter);
1350 if(dword != 0x10001234) {
1351 /*
1352 * No more pending commands
1353 */
1354 goto out_unlock;
1355 }
1356 WROUTDOOR(adapter, 0x10001234);
1357
1358 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1359 == 0xFF) {
1360 cpu_relax();
1361 }
1362 adapter->mbox->m_in.numstatus = 0xFF;
1363
1364 status = adapter->mbox->m_in.status;
1365
1366 /*
1367 * decrement the pending queue counter
1368 */
1369 atomic_sub(nstatus, &adapter->pend_cmds);
1370
1371 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1372 nstatus);
1373
1374 /* Acknowledge interrupt */
1375 WRINDOOR(adapter, 0x2);
1376
1377 handled = 1;
1378
00769ec4
JG		 1379 while( RDINDOOR(adapter) & 0x02 )
1380 cpu_relax();
1da177e4
LT		 1381
1382 mega_cmd_done(adapter, completed, nstatus, status);
1383
1384 mega_rundoneq(adapter);
1385
1386 /* Loop through any pending requests */
1387 if(atomic_read(&adapter->quiescent) == 0) {
1388 mega_runpendq(adapter);
1389 }
1390
1391 } while(1);
1392
1393 out_unlock:
1394
1395 spin_unlock_irqrestore(&adapter->lock, flags);
1396
1397 return IRQ_RETVAL(handled);
1398}
1399/**
1400 * mega_cmd_done()
1401 * @adapter - pointer to our soft state
1402 * @completed - array of ids of completed commands
1403 * @nstatus - number of completed commands
1404 * @status - status of the last command completed
1405 *
1406 * Complete the comamnds and call the scsi mid-layer callback hooks.
1407 */
1408static void
1409mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1410{
1411 mega_ext_passthru *epthru = NULL;
1412 struct scatterlist *sgl;
1413 Scsi_Cmnd *cmd = NULL;
1414 mega_passthru *pthru = NULL;
1415 mbox_t *mbox = NULL;
1416 u8 c;
1417 scb_t *scb;
1418 int islogical;
1419 int cmdid;
1420 int i;
1421
1422 /*
1423 * for all the commands completed, call the mid-layer callback routine
1424 * and free the scb.
1425 */
1426 for( i = 0; i < nstatus; i++ ) {
1427
1428 cmdid = completed[i];
1429
1430 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1431 scb = &adapter->int_scb;
1432 cmd = scb->cmd;
1433 mbox = (mbox_t *)scb->raw_mbox;
1434
1435 /*
1436 * Internal command interface do not fire the extended
1437 * passthru or 64-bit passthru
1438 */
1439 pthru = scb->pthru;
1440
1441 }
1442 else {
1443 scb = &adapter->scb_list[cmdid];
1444
1445 /*
1446 * Make sure f/w has completed a valid command
1447 */
1448 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1449 printk(KERN_CRIT
1450 "megaraid: invalid command ");
1451 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1452 cmdid, scb->state, scb->cmd);
1453
1454 continue;
1455 }
1456
1457 /*
1458 * Was a abort issued for this command
1459 */
1460 if( scb->state & SCB_ABORT ) {
1461
1462 printk(KERN_WARNING
1463 "megaraid: aborted cmd %lx[%x] complete.\n",
1464 scb->cmd->serial_number, scb->idx);
1465
1466 scb->cmd->result = (DID_ABORT << 16);
1467
1468 list_add_tail(SCSI_LIST(scb->cmd),
1469 &adapter->completed_list);
1470
1471 mega_free_scb(adapter, scb);
1472
1473 continue;
1474 }
1475
1476 /*
1477 * Was a reset issued for this command
1478 */
1479 if( scb->state & SCB_RESET ) {
1480
1481 printk(KERN_WARNING
1482 "megaraid: reset cmd %lx[%x] complete.\n",
1483 scb->cmd->serial_number, scb->idx);
1484
1485 scb->cmd->result = (DID_RESET << 16);
1486
1487 list_add_tail(SCSI_LIST(scb->cmd),
1488 &adapter->completed_list);
1489
1490 mega_free_scb (adapter, scb);
1491
1492 continue;
1493 }
1494
1495 cmd = scb->cmd;
1496 pthru = scb->pthru;
1497 epthru = scb->epthru;
1498 mbox = (mbox_t *)scb->raw_mbox;
1499
1500#if MEGA_HAVE_STATS
1501 {
1502
1503 int logdrv = mbox->m_out.logdrv;
1504
1505 islogical = adapter->logdrv_chan[cmd->channel];
1506 /*
1507 * Maintain an error counter for the logical drive.
1508 * Some application like SNMP agent need such
1509 * statistics
1510 */
1511 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1512 cmd->cmnd[0] == READ_10 ||
1513 cmd->cmnd[0] == READ_12)) {
1514 /*
1515 * Logical drive number increases by 0x80 when
1516 * a logical drive is deleted
1517 */
1518 adapter->rd_errors[logdrv%0x80]++;
1519 }
1520
1521 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1522 cmd->cmnd[0] == WRITE_10 ||
1523 cmd->cmnd[0] == WRITE_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->wr_errors[logdrv%0x80]++;
1529 }
1530
1531 }
1532#endif
1533 }
1534
1535 /*
1536 * Do not return the presence of hard disk on the channel so,
1537 * inquiry sent, and returned data==hard disk or removable
1538 * hard disk and not logical, request should return failure! -
1539 * PJ
1540 */
1541 islogical = adapter->logdrv_chan[cmd->device->channel];
1542 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1543
3f6270ef 1544 sgl = scsi_sglist(cmd);
45711f1a
JA		 1545 if( sg_page(sgl) ) {
1546 c = *(unsigned char *) sg_virt(&sgl[0]);
3f6270ef
FT		 1547 } else {
1548 printk(KERN_WARNING
1549 "megaraid: invalid sg.\n");
1550 c = 0;
1da177e4
LT		 1551 }
1552
1553 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1554 ((c & 0x1F ) == TYPE_DISK)) {
1555 status = 0xF0;
1556 }
1557 }
1558
1559 /* clear result; otherwise, success returns corrupt value */
1560 cmd->result = 0;
1561
1562 /* Convert MegaRAID status to Linux error code */
1563 switch (status) {
1564 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1565 cmd->result |= (DID_OK << 16);
1566 break;
1567
1568 case 0x02: /* ERROR_ABORTED, i.e.
1569 SCSI_STATUS_CHECK_CONDITION */
1570
1571 /* set sense_buffer and result fields */
1572 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1573 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1574
1575 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1576 14);
1577
1578 cmd->result = (DRIVER_SENSE << 24) |
1579 (DID_OK << 16) |
1580 (CHECK_CONDITION << 1);
1581 }
1582 else {
1583 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1584
1585 memcpy(cmd->sense_buffer,
1586 epthru->reqsensearea, 14);
1587
1588 cmd->result = (DRIVER_SENSE << 24) |
1589 (DID_OK << 16) |
1590 (CHECK_CONDITION << 1);
1591 } else {
1592 cmd->sense_buffer[0] = 0x70;
1593 cmd->sense_buffer[2] = ABORTED_COMMAND;
1594 cmd->result |= (CHECK_CONDITION << 1);
1595 }
1596 }
1597 break;
1598
1599 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1600 SCSI_STATUS_BUSY */
1601 cmd->result |= (DID_BUS_BUSY << 16) | status;
1602 break;
1603
1604 default:
1605#if MEGA_HAVE_CLUSTERING
1606 /*
1607 * If TEST_UNIT_READY fails, we know
1608 * MEGA_RESERVATION_STATUS failed
1609 */
1610 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1611 cmd->result |= (DID_ERROR << 16) |
1612 (RESERVATION_CONFLICT << 1);
1613 }
1614 else
1615 /*
1616 * Error code returned is 1 if Reserve or Release
1617 * failed or the input parameter is invalid
1618 */
1619 if( status == 1 &&
1620 (cmd->cmnd[0] == RESERVE ||
1621 cmd->cmnd[0] == RELEASE) ) {
1622
1623 cmd->result |= (DID_ERROR << 16) |
1624 (RESERVATION_CONFLICT << 1);
1625 }
1626 else
1627#endif
1628 cmd->result |= (DID_BAD_TARGET << 16)|status;
1629 }
1630
1631 /*
1632 * Only free SCBs for the commands coming down from the
1633 * mid-layer, not for which were issued internally
1634 *
1635 * For internal command, restore the status returned by the
1636 * firmware so that user can interpret it.
1637 */
1638 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1639 cmd->result = status;
1640
1641 /*
1642 * Remove the internal command from the pending list
1643 */
1644 list_del_init(&scb->list);
1645 scb->state = SCB_FREE;
1646 }
1647 else {
1648 mega_free_scb(adapter, scb);
1649 }
1650
1651 /* Add Scsi_Command to end of completed queue */
1652 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1653 }
1654}
1655
1656
1657/*
1658 * mega_runpendq()
1659 *
1660 * Run through the list of completed requests and finish it
1661 */
1662static void
1663mega_rundoneq (adapter_t *adapter)
1664{
1665 Scsi_Cmnd *cmd;
1666 struct list_head *pos;
1667
1668 list_for_each(pos, &adapter->completed_list) {
1669
0a04137e 1670 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1da177e4
LT		 1671
1672 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1673 cmd->scsi_done(cmd);
1674 }
1675
1676 INIT_LIST_HEAD(&adapter->completed_list);
1677}
1678
1679
1680/*
1681 * Free a SCB structure
1682 * Note: We assume the scsi commands associated with this scb is not free yet.
1683 */
1684static void
1685mega_free_scb(adapter_t *adapter, scb_t *scb)
1686{
1687 switch( scb->dma_type ) {
1688
1689 case MEGA_DMA_TYPE_NONE:
1690 break;
1691
1da177e4 1692 case MEGA_SGLIST:
3f6270ef 1693 scsi_dma_unmap(scb->cmd);
1da177e4 1694 break;
1da177e4
LT		 1695 default:
1696 break;
1697 }
1698
1699 /*
1700 * Remove from the pending list
1701 */
1702 list_del_init(&scb->list);
1703
1704 /* Link the scb back into free list */
1705 scb->state = SCB_FREE;
1706 scb->cmd = NULL;
1707
1708 list_add(&scb->list, &adapter->free_list);
1709}
1710
1711
1712static int
1713__mega_busywait_mbox (adapter_t *adapter)
1714{
1715 volatile mbox_t *mbox = adapter->mbox;
1716 long counter;
1717
1718 for (counter = 0; counter < 10000; counter++) {
1719 if (!mbox->m_in.busy)
1720 return 0;
e1fa0cea
AL		 1721 udelay(100);
1722 cond_resched();
1da177e4
LT		 1723 }
1724 return -1; /* give up after 1 second */
1725}
1726
1727/*
1728 * Copies data to SGLIST
1729 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1730 */
1731static int
1732mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1733{
3f6270ef 1734 struct scatterlist *sg;
1da177e4
LT		 1735 Scsi_Cmnd *cmd;
1736 int sgcnt;
1737 int idx;
1738
1739 cmd = scb->cmd;
1740
1da177e4
LT		 1741 /*
1742 * Copy Scatter-Gather list info into controller structure.
1743 *
1744 * The number of sg elements returned must not exceed our limit
1745 */
3f6270ef 1746 sgcnt = scsi_dma_map(cmd);
1da177e4
LT		 1747
1748 scb->dma_type = MEGA_SGLIST;
1749
3f6270ef 1750 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1da177e4 1751
51c928c3
JB		 1752 *len = 0;
1753
d5e89385
FT		 1754 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1755 sg = scsi_sglist(cmd);
1756 scb->dma_h_bulkdata = sg_dma_address(sg);
1757 *buf = (u32)scb->dma_h_bulkdata;
1758 *len = sg_dma_len(sg);
1759 return 0;
1760 }
1761
3f6270ef
FT		 1762 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1763 if (adapter->has_64bit_addr) {
1764 scb->sgl64[idx].address = sg_dma_address(sg);
1765 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1766 } else {
1767 scb->sgl[idx].address = sg_dma_address(sg);
1768 *len += scb->sgl[idx].length = sg_dma_len(sg);
1da177e4
LT		 1769 }
1770 }
1771
1772 /* Reset pointer and length fields */
1773 *buf = scb->sgl_dma_addr;
1774
1da177e4
LT		 1775 /* Return count of SG requests */
1776 return sgcnt;
1777}
1778
1779
1780/*
1781 * mega_8_to_40ld()
1782 *
1783 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1784 * Enquiry3 structures for later use
1785 */
1786static void
1787mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1788 mega_product_info *product_info)
1789{
1790 int i;
1791
1792 product_info->max_commands = inquiry->adapter_info.max_commands;
1793 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1794 product_info->nchannels = inquiry->adapter_info.nchannels;
1795
1796 for (i = 0; i < 4; i++) {
1797 product_info->fw_version[i] =
1798 inquiry->adapter_info.fw_version[i];
1799
1800 product_info->bios_version[i] =
1801 inquiry->adapter_info.bios_version[i];
1802 }
1803 enquiry3->cache_flush_interval =
1804 inquiry->adapter_info.cache_flush_interval;
1805
1806 product_info->dram_size = inquiry->adapter_info.dram_size;
1807
1808 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1809
1810 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1811 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1812 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1813 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1814 }
1815
1816 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1817 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1818}
1819
1820static inline void
1821mega_free_sgl(adapter_t *adapter)
1822{
1823 scb_t *scb;
1824 int i;
1825
1826 for(i = 0; i < adapter->max_cmds; i++) {
1827
1828 scb = &adapter->scb_list[i];
1829
1830 if( scb->sgl64 ) {
1831 pci_free_consistent(adapter->dev,
1832 sizeof(mega_sgl64) * adapter->sglen,
1833 scb->sgl64,
1834 scb->sgl_dma_addr);
1835
1836 scb->sgl64 = NULL;
1837 }
1838
1839 if( scb->pthru ) {
1840 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1841 scb->pthru, scb->pthru_dma_addr);
1842
1843 scb->pthru = NULL;
1844 }
1845
1846 if( scb->epthru ) {
1847 pci_free_consistent(adapter->dev,
1848 sizeof(mega_ext_passthru),
1849 scb->epthru, scb->epthru_dma_addr);
1850
1851 scb->epthru = NULL;
1852 }
1853
1854 }
1855}
1856
1857
1858/*
1859 * Get information about the card/driver
1860 */
1861const char *
1862megaraid_info(struct Scsi_Host *host)
1863{
1864 static char buffer[512];
1865 adapter_t *adapter;
1866
1867 adapter = (adapter_t *)host->hostdata;
1868
1869 sprintf (buffer,
1870 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1871 adapter->fw_version, adapter->product_info.max_commands,
1872 adapter->host->max_id, adapter->host->max_channel,
1873 adapter->host->max_lun);
1874 return buffer;
1875}
1876
1877/*
1878 * Abort a previous SCSI request. Only commands on the pending list can be
1879 * aborted. All the commands issued to the F/W must complete.
1880 */
1881static int
1882megaraid_abort(Scsi_Cmnd *cmd)
1883{
1884 adapter_t *adapter;
1885 int rval;
1886
1887 adapter = (adapter_t *)cmd->device->host->hostdata;
1888
1889 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1890
1891 /*
1892 * This is required here to complete any completed requests
1893 * to be communicated over to the mid layer.
1894 */
1895 mega_rundoneq(adapter);
1896
1897 return rval;
1898}
1899
1900
1901static int
fa4c4966 1902megaraid_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 1903{
1904 adapter_t *adapter;
1905 megacmd_t mc;
1906 int rval;
1907
1908 adapter = (adapter_t *)cmd->device->host->hostdata;
1909
1910#if MEGA_HAVE_CLUSTERING
1911 mc.cmd = MEGA_CLUSTER_CMD;
1912 mc.opcode = MEGA_RESET_RESERVATIONS;
1913
cb0258a2 1914 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 1915 printk(KERN_WARNING
1916 "megaraid: reservation reset failed.\n");
1917 }
1918 else {
1919 printk(KERN_INFO "megaraid: reservation reset.\n");
1920 }
1da177e4
LT		 1921#endif
1922
fa4c4966
JB		 1923 spin_lock_irq(&adapter->lock);
1924
1da177e4
LT		 1925 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1926
1927 /*
1928 * This is required here to complete any completed requests
1929 * to be communicated over to the mid layer.
1930 */
1931 mega_rundoneq(adapter);
94d0e7b8
JG		 1932 spin_unlock_irq(&adapter->lock);
1933
fa4c4966 1934 return rval;
94d0e7b8 1935}
1da177e4 1936
1da177e4
LT		 1937/**
1938 * megaraid_abort_and_reset()
1939 * @adapter - megaraid soft state
1940 * @cmd - scsi command to be aborted or reset
1941 * @aor - abort or reset flag
1942 *
1943 * Try to locate the scsi command in the pending queue. If found and is not
1944 * issued to the controller, abort/reset it. Otherwise return failure
1945 */
1946static int
1947megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1948{
1949 struct list_head *pos, *next;
1950 scb_t *scb;
1951
1952 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1953 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1954 cmd->cmnd[0], cmd->device->channel,
1955 cmd->device->id, cmd->device->lun);
1956
1957 if(list_empty(&adapter->pending_list))
1958 return FALSE;
1959
1960 list_for_each_safe(pos, next, &adapter->pending_list) {
1961
1962 scb = list_entry(pos, scb_t, list);
1963
1964 if (scb->cmd == cmd) { /* Found command */
1965
1966 scb->state |= aor;
1967
1968 /*
1969 * Check if this command has firmare owenership. If
1970 * yes, we cannot reset this command. Whenever, f/w
1971 * completes this command, we will return appropriate
1972 * status from ISR.
1973 */
1974 if( scb->state & SCB_ISSUED ) {
1975
1976 printk(KERN_WARNING
1977 "megaraid: %s-%lx[%x], fw owner.\n",
1978 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1979 cmd->serial_number, scb->idx);
1980
1981 return FALSE;
1982 }
1983 else {
1984
1985 /*
1986 * Not yet issued! Remove from the pending
1987 * list
1988 */
1989 printk(KERN_WARNING
1990 "megaraid: %s-%lx[%x], driver owner.\n",
1991 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1992 cmd->serial_number, scb->idx);
1993
1994 mega_free_scb(adapter, scb);
1995
1996 if( aor == SCB_ABORT ) {
1997 cmd->result = (DID_ABORT << 16);
1998 }
1999 else {
2000 cmd->result = (DID_RESET << 16);
2001 }
2002
2003 list_add_tail(SCSI_LIST(cmd),
2004 &adapter->completed_list);
2005
2006 return TRUE;
2007 }
2008 }
2009 }
2010
2011 return FALSE;
2012}
2013
2014static inline int
2015make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2016{
bab41e9b 2017 *pdev = alloc_pci_dev();
1da177e4
LT		 2018
2019 if( *pdev == NULL ) return -1;
2020
2021 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2022
910638ae 2023 if( pci_set_dma_mask(*pdev, DMA_32BIT_MASK) != 0 ) {
1da177e4
LT		 2024 kfree(*pdev);
2025 return -1;
2026 }
2027
2028 return 0;
2029}
2030
2031static inline void
2032free_local_pdev(struct pci_dev *pdev)
2033{
2034 kfree(pdev);
2035}
2036
2037/**
2038 * mega_allocate_inquiry()
2039 * @dma_handle - handle returned for dma address
2040 * @pdev - handle to pci device
2041 *
2042 * allocates memory for inquiry structure
2043 */
2044static inline void *
2045mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2046{
2047 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2048}
2049
2050
2051static inline void
2052mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2053{
2054 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2055}
2056
2057
2058#ifdef CONFIG_PROC_FS
2059/* Following code handles /proc fs */
2060
2061#define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2062 S_IRUSR | S_IFREG, \
2063 controller_proc_dir_entry, \
2064 func, adapter)
2065
2066/**
2067 * mega_create_proc_entry()
2068 * @index - index in soft state array
2069 * @parent - parent node for this /proc entry
2070 *
2071 * Creates /proc entries for our controllers.
2072 */
2073static void
2074mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2075{
2076 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2077 u8 string[64] = { 0 };
2078 adapter_t *adapter = hba_soft_state[index];
2079
2080 sprintf(string, "hba%d", adapter->host->host_no);
2081
2082 controller_proc_dir_entry =
2083 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2084
2085 if(!controller_proc_dir_entry) {
2086 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2087 return;
2088 }
2089 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2090 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2091 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2092#if MEGA_HAVE_ENH_PROC
2093 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2094 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2095 proc_battery);
2096
2097 /*
2098 * Display each physical drive on its channel
2099 */
2100 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2101 proc_pdrv_ch0);
2102 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2103 proc_pdrv_ch1);
2104 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2105 proc_pdrv_ch2);
2106 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2107 proc_pdrv_ch3);
2108
2109 /*
2110 * Display a set of up to 10 logical drive through each of following
2111 * /proc entries
2112 */
2113 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2114 proc_rdrv_10);
2115 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2116 proc_rdrv_20);
2117 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2118 proc_rdrv_30);
2119 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2120 proc_rdrv_40);
2121#endif
2122}
2123
2124
2125/**
2126 * proc_read_config()
2127 * @page - buffer to write the data in
2128 * @start - where the actual data has been written in page
2129 * @offset - same meaning as the read system call
2130 * @count - same meaning as the read system call
2131 * @eof - set if no more data needs to be returned
2132 * @data - pointer to our soft state
2133 *
2134 * Display configuration information about the controller.
2135 */
2136static int
2137proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2138 void *data)
2139{
2140
2141 adapter_t *adapter = (adapter_t *)data;
2142 int len = 0;
2143
2144 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2145
2146 if(adapter->product_info.product_name[0])
2147 len += sprintf(page+len, "%s\n",
2148 adapter->product_info.product_name);
2149
2150 len += sprintf(page+len, "Controller Type: ");
2151
2152 if( adapter->flag & BOARD_MEMMAP ) {
2153 len += sprintf(page+len,
2154 "438/466/467/471/493/518/520/531/532\n");
2155 }
2156 else {
2157 len += sprintf(page+len,
2158 "418/428/434\n");
2159 }
2160
2161 if(adapter->flag & BOARD_40LD) {
2162 len += sprintf(page+len,
2163 "Controller Supports 40 Logical Drives\n");
2164 }
2165
2166 if(adapter->flag & BOARD_64BIT) {
2167 len += sprintf(page+len,
2168 "Controller capable of 64-bit memory addressing\n");
2169 }
2170 if( adapter->has_64bit_addr ) {
2171 len += sprintf(page+len,
2172 "Controller using 64-bit memory addressing\n");
2173 }
2174 else {
2175 len += sprintf(page+len,
2176 "Controller is not using 64-bit memory addressing\n");
2177 }
2178
2179 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2180 adapter->host->irq);
2181
2182 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2183 adapter->numldrv, adapter->product_info.nchannels);
2184
2185 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2186 adapter->fw_version, adapter->bios_version,
2187 adapter->product_info.dram_size);
2188
2189 len += sprintf(page+len,
2190 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2191 adapter->product_info.max_commands, adapter->max_cmds);
2192
2193 len += sprintf(page+len, "support_ext_cdb = %d\n",
2194 adapter->support_ext_cdb);
2195 len += sprintf(page+len, "support_random_del = %d\n",
2196 adapter->support_random_del);
2197 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2198 adapter->boot_ldrv_enabled);
2199 len += sprintf(page+len, "boot_ldrv = %d\n",
2200 adapter->boot_ldrv);
2201 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2202 adapter->boot_pdrv_enabled);
2203 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2204 adapter->boot_pdrv_ch);
2205 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2206 adapter->boot_pdrv_tgt);
2207 len += sprintf(page+len, "quiescent = %d\n",
2208 atomic_read(&adapter->quiescent));
2209 len += sprintf(page+len, "has_cluster = %d\n",
2210 adapter->has_cluster);
2211
2212 len += sprintf(page+len, "\nModule Parameters:\n");
2213 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2214 max_cmd_per_lun);
2215 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2216 max_sectors_per_io);
2217
2218 *eof = 1;
2219
2220 return len;
2221}
2222
2223
2224
2225/**
2226 * proc_read_stat()
2227 * @page - buffer to write the data in
2228 * @start - where the actual data has been written in page
2229 * @offset - same meaning as the read system call
2230 * @count - same meaning as the read system call
2231 * @eof - set if no more data needs to be returned
2232 * @data - pointer to our soft state
2233 *
2234 * Diaplay statistical information about the I/O activity.
2235 */
2236static int
2237proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2238 void *data)
2239{
2240 adapter_t *adapter;
2241 int len;
2242 int i;
2243
2244 i = 0; /* avoid compilation warnings */
2245 len = 0;
2246 adapter = (adapter_t *)data;
2247
2248 len = sprintf(page, "Statistical Information for this controller\n");
2249 len += sprintf(page+len, "pend_cmds = %d\n",
2250 atomic_read(&adapter->pend_cmds));
2251#if MEGA_HAVE_STATS
2252 for(i = 0; i < adapter->numldrv; i++) {
2253 len += sprintf(page+len, "Logical Drive %d:\n", i);
2254
2255 len += sprintf(page+len,
2256 "\tReads Issued = %lu, Writes Issued = %lu\n",
2257 adapter->nreads[i], adapter->nwrites[i]);
2258
2259 len += sprintf(page+len,
2260 "\tSectors Read = %lu, Sectors Written = %lu\n",
2261 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2262
2263 len += sprintf(page+len,
2264 "\tRead errors = %lu, Write errors = %lu\n\n",
2265 adapter->rd_errors[i], adapter->wr_errors[i]);
2266 }
2267#else
2268 len += sprintf(page+len,
2269 "IO and error counters not compiled in driver.\n");
2270#endif
2271
2272 *eof = 1;
2273
2274 return len;
2275}
2276
2277
2278/**
2279 * proc_read_mbox()
2280 * @page - buffer to write the data in
2281 * @start - where the actual data has been written in page
2282 * @offset - same meaning as the read system call
2283 * @count - same meaning as the read system call
2284 * @eof - set if no more data needs to be returned
2285 * @data - pointer to our soft state
2286 *
2287 * Display mailbox information for the last command issued. This information
2288 * is good for debugging.
2289 */
2290static int
2291proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2292 void *data)
2293{
2294
2295 adapter_t *adapter = (adapter_t *)data;
2296 volatile mbox_t *mbox = adapter->mbox;
2297 int len = 0;
2298
2299 len = sprintf(page, "Contents of Mail Box Structure\n");
2300 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2301 mbox->m_out.cmd);
2302 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2303 mbox->m_out.cmdid);
2304 len += sprintf(page+len, " No of Sectors= %04d\n",
2305 mbox->m_out.numsectors);
2306 len += sprintf(page+len, " LBA = 0x%02x\n",
2307 mbox->m_out.lba);
2308 len += sprintf(page+len, " DTA = 0x%08x\n",
2309 mbox->m_out.xferaddr);
2310 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2311 mbox->m_out.logdrv);
2312 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2313 mbox->m_out.numsgelements);
2314 len += sprintf(page+len, " Busy = %01x\n",
2315 mbox->m_in.busy);
2316 len += sprintf(page+len, " Status = 0x%02x\n",
2317 mbox->m_in.status);
2318
2319 *eof = 1;
2320
2321 return len;
2322}
2323
2324
2325/**
2326 * proc_rebuild_rate()
2327 * @page - buffer to write the data in
2328 * @start - where the actual data has been written in page
2329 * @offset - same meaning as the read system call
2330 * @count - same meaning as the read system call
2331 * @eof - set if no more data needs to be returned
2332 * @data - pointer to our soft state
2333 *
2334 * Display current rebuild rate
2335 */
2336static int
2337proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2338 void *data)
2339{
2340 adapter_t *adapter = (adapter_t *)data;
2341 dma_addr_t dma_handle;
2342 caddr_t inquiry;
2343 struct pci_dev *pdev;
2344 int len = 0;
2345
2346 if( make_local_pdev(adapter, &pdev) != 0 ) {
2347 *eof = 1;
2348 return len;
2349 }
2350
2351 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2352 free_local_pdev(pdev);
2353 *eof = 1;
2354 return len;
2355 }
2356
2357 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2358
2359 len = sprintf(page, "Adapter inquiry failed.\n");
2360
2361 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2362
2363 mega_free_inquiry(inquiry, dma_handle, pdev);
2364
2365 free_local_pdev(pdev);
2366
2367 *eof = 1;
2368
2369 return len;
2370 }
2371
2372 if( adapter->flag & BOARD_40LD ) {
2373 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2374 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2375 }
2376 else {
2377 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2378 ((mraid_ext_inquiry *)
2379 inquiry)->raid_inq.adapter_info.rebuild_rate);
2380 }
2381
2382
2383 mega_free_inquiry(inquiry, dma_handle, pdev);
2384
2385 free_local_pdev(pdev);
2386
2387 *eof = 1;
2388
2389 return len;
2390}
2391
2392
2393/**
2394 * proc_battery()
2395 * @page - buffer to write the data in
2396 * @start - where the actual data has been written in page
2397 * @offset - same meaning as the read system call
2398 * @count - same meaning as the read system call
2399 * @eof - set if no more data needs to be returned
2400 * @data - pointer to our soft state
2401 *
2402 * Display information about the battery module on the controller.
2403 */
2404static int
2405proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2406 void *data)
2407{
2408 adapter_t *adapter = (adapter_t *)data;
2409 dma_addr_t dma_handle;
2410 caddr_t inquiry;
2411 struct pci_dev *pdev;
2412 u8 battery_status = 0;
2413 char str[256];
2414 int len = 0;
2415
2416 if( make_local_pdev(adapter, &pdev) != 0 ) {
2417 *eof = 1;
2418 return len;
2419 }
2420
2421 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2422 free_local_pdev(pdev);
2423 *eof = 1;
2424 return len;
2425 }
2426
2427 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2428
2429 len = sprintf(page, "Adapter inquiry failed.\n");
2430
2431 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2432
2433 mega_free_inquiry(inquiry, dma_handle, pdev);
2434
2435 free_local_pdev(pdev);
2436
2437 *eof = 1;
2438
2439 return len;
2440 }
2441
2442 if( adapter->flag & BOARD_40LD ) {
2443 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2444 }
2445 else {
2446 battery_status = ((mraid_ext_inquiry *)inquiry)->
2447 raid_inq.adapter_info.battery_status;
2448 }
2449
2450 /*
2451 * Decode the battery status
2452 */
2453 sprintf(str, "Battery Status:[%d]", battery_status);
2454
2455 if(battery_status == MEGA_BATT_CHARGE_DONE)
2456 strcat(str, " Charge Done");
2457
2458 if(battery_status & MEGA_BATT_MODULE_MISSING)
2459 strcat(str, " Module Missing");
2460
2461 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2462 strcat(str, " Low Voltage");
2463
2464 if(battery_status & MEGA_BATT_TEMP_HIGH)
2465 strcat(str, " Temperature High");
2466
2467 if(battery_status & MEGA_BATT_PACK_MISSING)
2468 strcat(str, " Pack Missing");
2469
2470 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2471 strcat(str, " Charge In-progress");
2472
2473 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2474 strcat(str, " Charge Fail");
2475
2476 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2477 strcat(str, " Cycles Exceeded");
2478
2479 len = sprintf(page, "%s\n", str);
2480
2481
2482 mega_free_inquiry(inquiry, dma_handle, pdev);
2483
2484 free_local_pdev(pdev);
2485
2486 *eof = 1;
2487
2488 return len;
2489}
2490
2491
2492/**
2493 * proc_pdrv_ch0()
2494 * @page - buffer to write the data in
2495 * @start - where the actual data has been written in page
2496 * @offset - same meaning as the read system call
2497 * @count - same meaning as the read system call
2498 * @eof - set if no more data needs to be returned
2499 * @data - pointer to our soft state
2500 *
2501 * Display information about the physical drives on physical channel 0.
2502 */
2503static int
2504proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2505 void *data)
2506{
2507 adapter_t *adapter = (adapter_t *)data;
2508
2509 *eof = 1;
2510
2511 return (proc_pdrv(adapter, page, 0));
2512}
2513
2514
2515/**
2516 * proc_pdrv_ch1()
2517 * @page - buffer to write the data in
2518 * @start - where the actual data has been written in page
2519 * @offset - same meaning as the read system call
2520 * @count - same meaning as the read system call
2521 * @eof - set if no more data needs to be returned
2522 * @data - pointer to our soft state
2523 *
2524 * Display information about the physical drives on physical channel 1.
2525 */
2526static int
2527proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2528 void *data)
2529{
2530 adapter_t *adapter = (adapter_t *)data;
2531
2532 *eof = 1;
2533
2534 return (proc_pdrv(adapter, page, 1));
2535}
2536
2537
2538/**
2539 * proc_pdrv_ch2()
2540 * @page - buffer to write the data in
2541 * @start - where the actual data has been written in page
2542 * @offset - same meaning as the read system call
2543 * @count - same meaning as the read system call
2544 * @eof - set if no more data needs to be returned
2545 * @data - pointer to our soft state
2546 *
2547 * Display information about the physical drives on physical channel 2.
2548 */
2549static int
2550proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2551 void *data)
2552{
2553 adapter_t *adapter = (adapter_t *)data;
2554
2555 *eof = 1;
2556
2557 return (proc_pdrv(adapter, page, 2));
2558}
2559
2560
2561/**
2562 * proc_pdrv_ch3()
2563 * @page - buffer to write the data in
2564 * @start - where the actual data has been written in page
2565 * @offset - same meaning as the read system call
2566 * @count - same meaning as the read system call
2567 * @eof - set if no more data needs to be returned
2568 * @data - pointer to our soft state
2569 *
2570 * Display information about the physical drives on physical channel 3.
2571 */
2572static int
2573proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2574 void *data)
2575{
2576 adapter_t *adapter = (adapter_t *)data;
2577
2578 *eof = 1;
2579
2580 return (proc_pdrv(adapter, page, 3));
2581}
2582
2583
2584/**
2585 * proc_pdrv()
2586 * @page - buffer to write the data in
2587 * @adapter - pointer to our soft state
2588 *
2589 * Display information about the physical drives.
2590 */
2591static int
2592proc_pdrv(adapter_t *adapter, char *page, int channel)
2593{
2594 dma_addr_t dma_handle;
2595 char *scsi_inq;
2596 dma_addr_t scsi_inq_dma_handle;
2597 caddr_t inquiry;
2598 struct pci_dev *pdev;
2599 u8 *pdrv_state;
2600 u8 state;
2601 int tgt;
2602 int max_channels;
2603 int len = 0;
2604 char str[80];
2605 int i;
2606
2607 if( make_local_pdev(adapter, &pdev) != 0 ) {
2608 return len;
2609 }
2610
2611 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2612 goto free_pdev;
2613 }
2614
2615 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2616 len = sprintf(page, "Adapter inquiry failed.\n");
2617
2618 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2619
2620 goto free_inquiry;
2621 }
2622
2623
2624 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2625
2626 if( scsi_inq == NULL ) {
2627 len = sprintf(page, "memory not available for scsi inq.\n");
2628
2629 goto free_inquiry;
2630 }
2631
2632 if( adapter->flag & BOARD_40LD ) {
2633 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2634 }
2635 else {
2636 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2637 raid_inq.pdrv_info.pdrv_state;
2638 }
2639
2640 max_channels = adapter->product_info.nchannels;
2641
2642 if( channel >= max_channels ) {
2643 goto free_pci;
2644 }
2645
2646 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2647
2648 i = channel*16 + tgt;
2649
2650 state = *(pdrv_state + i);
2651
2652 switch( state & 0x0F ) {
2653
2654 case PDRV_ONLINE:
2655 sprintf(str,
2656 "Channel:%2d Id:%2d State: Online",
2657 channel, tgt);
2658 break;
2659
2660 case PDRV_FAILED:
2661 sprintf(str,
2662 "Channel:%2d Id:%2d State: Failed",
2663 channel, tgt);
2664 break;
2665
2666 case PDRV_RBLD:
2667 sprintf(str,
2668 "Channel:%2d Id:%2d State: Rebuild",
2669 channel, tgt);
2670 break;
2671
2672 case PDRV_HOTSPARE:
2673 sprintf(str,
2674 "Channel:%2d Id:%2d State: Hot spare",
2675 channel, tgt);
2676 break;
2677
2678 default:
2679 sprintf(str,
2680 "Channel:%2d Id:%2d State: Un-configured",
2681 channel, tgt);
2682 break;
2683
2684 }
2685
2686 /*
2687 * This interface displays inquiries for disk drives
2688 * only. Inquries for logical drives and non-disk
2689 * devices are available through /proc/scsi/scsi
2690 */
2691 memset(scsi_inq, 0, 256);
2692 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2693 scsi_inq_dma_handle) ||
2694 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2695 continue;
2696 }
2697
2698 /*
2699 * Check for overflow. We print less than 240
2700 * characters for inquiry
2701 */
2702 if( (len + 240) >= PAGE_SIZE ) break;
2703
2704 len += sprintf(page+len, "%s.\n", str);
2705
2706 len += mega_print_inquiry(page+len, scsi_inq);
2707 }
2708
2709free_pci:
2710 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2711free_inquiry:
2712 mega_free_inquiry(inquiry, dma_handle, pdev);
2713free_pdev:
2714 free_local_pdev(pdev);
2715
2716 return len;
2717}
2718
2719
2720/*
2721 * Display scsi inquiry
2722 */
2723static int
2724mega_print_inquiry(char *page, char *scsi_inq)
2725{
2726 int len = 0;
2727 int i;
2728
2729 len = sprintf(page, " Vendor: ");
2730 for( i = 8; i < 16; i++ ) {
2731 len += sprintf(page+len, "%c", scsi_inq[i]);
2732 }
2733
2734 len += sprintf(page+len, " Model: ");
2735
2736 for( i = 16; i < 32; i++ ) {
2737 len += sprintf(page+len, "%c", scsi_inq[i]);
2738 }
2739
2740 len += sprintf(page+len, " Rev: ");
2741
2742 for( i = 32; i < 36; i++ ) {
2743 len += sprintf(page+len, "%c", scsi_inq[i]);
2744 }
2745
2746 len += sprintf(page+len, "\n");
2747
2748 i = scsi_inq[0] & 0x1f;
2749
4ff36718 2750 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
1da177e4
LT		 2751
2752 len += sprintf(page+len,
2753 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2754
2755 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2756 len += sprintf(page+len, " CCS\n");
2757 else
2758 len += sprintf(page+len, "\n");
2759
2760 return len;
2761}
2762
2763
2764/**
2765 * proc_rdrv_10()
2766 * @page - buffer to write the data in
2767 * @start - where the actual data has been written in page
2768 * @offset - same meaning as the read system call
2769 * @count - same meaning as the read system call
2770 * @eof - set if no more data needs to be returned
2771 * @data - pointer to our soft state
2772 *
2773 * Display real time information about the logical drives 0 through 9.
2774 */
2775static int
2776proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2777 void *data)
2778{
2779 adapter_t *adapter = (adapter_t *)data;
2780
2781 *eof = 1;
2782
2783 return (proc_rdrv(adapter, page, 0, 9));
2784}
2785
2786
2787/**
2788 * proc_rdrv_20()
2789 * @page - buffer to write the data in
2790 * @start - where the actual data has been written in page
2791 * @offset - same meaning as the read system call
2792 * @count - same meaning as the read system call
2793 * @eof - set if no more data needs to be returned
2794 * @data - pointer to our soft state
2795 *
2796 * Display real time information about the logical drives 0 through 9.
2797 */
2798static int
2799proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2800 void *data)
2801{
2802 adapter_t *adapter = (adapter_t *)data;
2803
2804 *eof = 1;
2805
2806 return (proc_rdrv(adapter, page, 10, 19));
2807}
2808
2809
2810/**
2811 * proc_rdrv_30()
2812 * @page - buffer to write the data in
2813 * @start - where the actual data has been written in page
2814 * @offset - same meaning as the read system call
2815 * @count - same meaning as the read system call
2816 * @eof - set if no more data needs to be returned
2817 * @data - pointer to our soft state
2818 *
2819 * Display real time information about the logical drives 0 through 9.
2820 */
2821static int
2822proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2823 void *data)
2824{
2825 adapter_t *adapter = (adapter_t *)data;
2826
2827 *eof = 1;
2828
2829 return (proc_rdrv(adapter, page, 20, 29));
2830}
2831
2832
2833/**
2834 * proc_rdrv_40()
2835 * @page - buffer to write the data in
2836 * @start - where the actual data has been written in page
2837 * @offset - same meaning as the read system call
2838 * @count - same meaning as the read system call
2839 * @eof - set if no more data needs to be returned
2840 * @data - pointer to our soft state
2841 *
2842 * Display real time information about the logical drives 0 through 9.
2843 */
2844static int
2845proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2846 void *data)
2847{
2848 adapter_t *adapter = (adapter_t *)data;
2849
2850 *eof = 1;
2851
2852 return (proc_rdrv(adapter, page, 30, 39));
2853}
2854
2855
2856/**
2857 * proc_rdrv()
2858 * @page - buffer to write the data in
2859 * @adapter - pointer to our soft state
2860 * @start - starting logical drive to display
2861 * @end - ending logical drive to display
2862 *
2863 * We do not print the inquiry information since its already available through
2864 * /proc/scsi/scsi interface
2865 */
2866static int
2867proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2868{
2869 dma_addr_t dma_handle;
2870 logdrv_param *lparam;
2871 megacmd_t mc;
2872 char *disk_array;
2873 dma_addr_t disk_array_dma_handle;
2874 caddr_t inquiry;
2875 struct pci_dev *pdev;
2876 u8 *rdrv_state;
2877 int num_ldrv;
2878 u32 array_sz;
2879 int len = 0;
2880 int i;
2881
2882 if( make_local_pdev(adapter, &pdev) != 0 ) {
2883 return len;
2884 }
2885
2886 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2887 free_local_pdev(pdev);
2888 return len;
2889 }
2890
2891 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2892
2893 len = sprintf(page, "Adapter inquiry failed.\n");
2894
2895 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2896
2897 mega_free_inquiry(inquiry, dma_handle, pdev);
2898
2899 free_local_pdev(pdev);
2900
2901 return len;
2902 }
2903
2904 memset(&mc, 0, sizeof(megacmd_t));
2905
2906 if( adapter->flag & BOARD_40LD ) {
2907 array_sz = sizeof(disk_array_40ld);
2908
2909 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2910
2911 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2912 }
2913 else {
2914 array_sz = sizeof(disk_array_8ld);
2915
2916 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2917 raid_inq.logdrv_info.ldrv_state;
2918
2919 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2920 raid_inq.logdrv_info.num_ldrv;
2921 }
2922
2923 disk_array = pci_alloc_consistent(pdev, array_sz,
2924 &disk_array_dma_handle);
2925
2926 if( disk_array == NULL ) {
2927 len = sprintf(page, "memory not available.\n");
2928
2929 mega_free_inquiry(inquiry, dma_handle, pdev);
2930
2931 free_local_pdev(pdev);
2932
2933 return len;
2934 }
2935
2936 mc.xferaddr = (u32)disk_array_dma_handle;
2937
2938 if( adapter->flag & BOARD_40LD ) {
2939 mc.cmd = FC_NEW_CONFIG;
2940 mc.opcode = OP_DCMD_READ_CONFIG;
2941
cb0258a2 2942 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 2943
2944 len = sprintf(page, "40LD read config failed.\n");
2945
2946 mega_free_inquiry(inquiry, dma_handle, pdev);
2947
2948 pci_free_consistent(pdev, array_sz, disk_array,
2949 disk_array_dma_handle);
2950
2951 free_local_pdev(pdev);
2952
2953 return len;
2954 }
2955
2956 }
2957 else {
2958 mc.cmd = NEW_READ_CONFIG_8LD;
2959
cb0258a2 2960 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 2961
2962 mc.cmd = READ_CONFIG_8LD;
2963
cb0258a2 2964 if( mega_internal_command(adapter, &mc,
1da177e4
LT		 2965 NULL) ){
2966
2967 len = sprintf(page,
2968 "8LD read config failed.\n");
2969
2970 mega_free_inquiry(inquiry, dma_handle, pdev);
2971
2972 pci_free_consistent(pdev, array_sz,
2973 disk_array,
2974 disk_array_dma_handle);
2975
2976 free_local_pdev(pdev);
2977
2978 return len;
2979 }
2980 }
2981 }
2982
2983 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2984
2985 if( adapter->flag & BOARD_40LD ) {
2986 lparam =
2987 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2988 }
2989 else {
2990 lparam =
2991 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2992 }
2993
2994 /*
2995 * Check for overflow. We print less than 240 characters for
2996 * information about each logical drive.
2997 */
2998 if( (len + 240) >= PAGE_SIZE ) break;
2999
3000 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3001
3002 switch( rdrv_state[i] & 0x0F ) {
3003 case RDRV_OFFLINE:
3004 len += sprintf(page+len, "state: offline");
3005 break;
3006
3007 case RDRV_DEGRADED:
3008 len += sprintf(page+len, "state: degraded");
3009 break;
3010
3011 case RDRV_OPTIMAL:
3012 len += sprintf(page+len, "state: optimal");
3013 break;
3014
3015 case RDRV_DELETED:
3016 len += sprintf(page+len, "state: deleted");
3017 break;
3018
3019 default:
3020 len += sprintf(page+len, "state: unknown");
3021 break;
3022 }
3023
3024 /*
3025 * Check if check consistency or initialization is going on
3026 * for this logical drive.
3027 */
3028 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3029 len += sprintf(page+len,
3030 ", check-consistency in progress");
3031 }
3032 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3033 len += sprintf(page+len,
3034 ", initialization in progress");
3035 }
3036
3037 len += sprintf(page+len, "\n");
3038
3039 len += sprintf(page+len, "Span depth:%3d, ",
3040 lparam->span_depth);
3041
3042 len += sprintf(page+len, "RAID level:%3d, ",
3043 lparam->level);
3044
3045 len += sprintf(page+len, "Stripe size:%3d, ",
3046 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3047
3048 len += sprintf(page+len, "Row size:%3d\n",
3049 lparam->row_size);
3050
3051
3052 len += sprintf(page+len, "Read Policy: ");
3053
3054 switch(lparam->read_ahead) {
3055
3056 case NO_READ_AHEAD:
3057 len += sprintf(page+len, "No read ahead, ");
3058 break;
3059
3060 case READ_AHEAD:
3061 len += sprintf(page+len, "Read ahead, ");
3062 break;
3063
3064 case ADAP_READ_AHEAD:
3065 len += sprintf(page+len, "Adaptive, ");
3066 break;
3067
3068 }
3069
3070 len += sprintf(page+len, "Write Policy: ");
3071
3072 switch(lparam->write_mode) {
3073
3074 case WRMODE_WRITE_THRU:
3075 len += sprintf(page+len, "Write thru, ");
3076 break;
3077
3078 case WRMODE_WRITE_BACK:
3079 len += sprintf(page+len, "Write back, ");
3080 break;
3081 }
3082
3083 len += sprintf(page+len, "Cache Policy: ");
3084
3085 switch(lparam->direct_io) {
3086
3087 case CACHED_IO:
3088 len += sprintf(page+len, "Cached IO\n\n");
3089 break;
3090
3091 case DIRECT_IO:
3092 len += sprintf(page+len, "Direct IO\n\n");
3093 break;
3094 }
3095 }
3096
3097 mega_free_inquiry(inquiry, dma_handle, pdev);
3098
3099 pci_free_consistent(pdev, array_sz, disk_array,
3100 disk_array_dma_handle);
3101
3102 free_local_pdev(pdev);
3103
3104 return len;
3105}
84a3c97b 3106#else
3107static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3108{
3109}
1da177e4
LT		 3110#endif
3111
3112
3113/**
3114 * megaraid_biosparam()
3115 *
3116 * Return the disk geometry for a particular disk
3117 */
3118static int
3119megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3120 sector_t capacity, int geom[])
3121{
3122 adapter_t *adapter;
3123 unsigned char *bh;
3124 int heads;
3125 int sectors;
3126 int cylinders;
3127 int rval;
3128
3129 /* Get pointer to host config structure */
3130 adapter = (adapter_t *)sdev->host->hostdata;
3131
3132 if (IS_RAID_CH(adapter, sdev->channel)) {
3133 /* Default heads (64) & sectors (32) */
3134 heads = 64;
3135 sectors = 32;
3136 cylinders = (ulong)capacity / (heads * sectors);
3137
3138 /*
3139 * Handle extended translation size for logical drives
3140 * > 1Gb
3141 */
3142 if ((ulong)capacity >= 0x200000) {
3143 heads = 255;
3144 sectors = 63;
3145 cylinders = (ulong)capacity / (heads * sectors);
3146 }
3147
3148 /* return result */
3149 geom[0] = heads;
3150 geom[1] = sectors;
3151 geom[2] = cylinders;
3152 }
3153 else {
3154 bh = scsi_bios_ptable(bdev);
3155
3156 if( bh ) {
3157 rval = scsi_partsize(bh, capacity,
3158 &geom[2], &geom[0], &geom[1]);
3159 kfree(bh);
3160 if( rval != -1 )
3161 return rval;
3162 }
3163
3164 printk(KERN_INFO
3165 "megaraid: invalid partition on this disk on channel %d\n",
3166 sdev->channel);
3167
3168 /* Default heads (64) & sectors (32) */
3169 heads = 64;
3170 sectors = 32;
3171 cylinders = (ulong)capacity / (heads * sectors);
3172
3173 /* Handle extended translation size for logical drives > 1Gb */
3174 if ((ulong)capacity >= 0x200000) {
3175 heads = 255;
3176 sectors = 63;
3177 cylinders = (ulong)capacity / (heads * sectors);
3178 }
3179
3180 /* return result */
3181 geom[0] = heads;
3182 geom[1] = sectors;
3183 geom[2] = cylinders;
3184 }
3185
3186 return 0;
3187}
3188
3189/**
3190 * mega_init_scb()
3191 * @adapter - pointer to our soft state
3192 *
3193 * Allocate memory for the various pointers in the scb structures:
3194 * scatter-gather list pointer, passthru and extended passthru structure
3195 * pointers.
3196 */
3197static int
3198mega_init_scb(adapter_t *adapter)
3199{
3200 scb_t *scb;
3201 int i;
3202
3203 for( i = 0; i < adapter->max_cmds; i++ ) {
3204
3205 scb = &adapter->scb_list[i];
3206
3207 scb->sgl64 = NULL;
3208 scb->sgl = NULL;
3209 scb->pthru = NULL;
3210 scb->epthru = NULL;
3211 }
3212
3213 for( i = 0; i < adapter->max_cmds; i++ ) {
3214
3215 scb = &adapter->scb_list[i];
3216
3217 scb->idx = i;
3218
3219 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3220 sizeof(mega_sgl64) * adapter->sglen,
3221 &scb->sgl_dma_addr);
3222
3223 scb->sgl = (mega_sglist *)scb->sgl64;
3224
3225 if( !scb->sgl ) {
3226 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3227 mega_free_sgl(adapter);
3228 return -1;
3229 }
3230
3231 scb->pthru = pci_alloc_consistent(adapter->dev,
3232 sizeof(mega_passthru),
3233 &scb->pthru_dma_addr);
3234
3235 if( !scb->pthru ) {
3236 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3237 mega_free_sgl(adapter);
3238 return -1;
3239 }
3240
3241 scb->epthru = pci_alloc_consistent(adapter->dev,
3242 sizeof(mega_ext_passthru),
3243 &scb->epthru_dma_addr);
3244
3245 if( !scb->epthru ) {
3246 printk(KERN_WARNING
3247 "Can't allocate extended passthru.\n");
3248 mega_free_sgl(adapter);
3249 return -1;
3250 }
3251
3252
3253 scb->dma_type = MEGA_DMA_TYPE_NONE;
3254
3255 /*
3256 * Link to free list
3257 * lock not required since we are loading the driver, so no
3258 * commands possible right now.
3259 */
3260 scb->state = SCB_FREE;
3261 scb->cmd = NULL;
3262 list_add(&scb->list, &adapter->free_list);
3263 }
3264
3265 return 0;
3266}
3267
3268
3269/**
3270 * megadev_open()
3271 * @inode - unused
3272 * @filep - unused
3273 *
3274 * Routines for the character/ioctl interface to the driver. Find out if this
d21c95c5
JC		 3275 * is a valid open.
3276 *
3277 * No BKL needed here.
1da177e4
LT		 3278 */
3279static int
3280megadev_open (struct inode *inode, struct file *filep)
3281{
3282 /*
3283 * Only allow superuser to access private ioctl interface
3284 */
3285 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3286
3287 return 0;
3288}
3289
3290
3291/**
3292 * megadev_ioctl()
3293 * @inode - Our device inode
3294 * @filep - unused
3295 * @cmd - ioctl command
3296 * @arg - user buffer
3297 *
3298 * ioctl entry point for our private ioctl interface. We move the data in from
3299 * the user space, prepare the command (if necessary, convert the old MIMD
3300 * ioctl to new ioctl command), and issue a synchronous command to the
3301 * controller.
3302 */
3303static int
3304megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3305 unsigned long arg)
3306{
3307 adapter_t *adapter;
3308 nitioctl_t uioc;
3309 int adapno;
3310 int rval;
3311 mega_passthru __user *upthru; /* user address for passthru */
3312 mega_passthru *pthru; /* copy user passthru here */
3313 dma_addr_t pthru_dma_hndl;
3314 void *data = NULL; /* data to be transferred */
3315 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3316 megacmd_t mc;
3317 megastat_t __user *ustats;
3318 int num_ldrv;
3319 u32 uxferaddr = 0;
3320 struct pci_dev *pdev;
3321
3322 ustats = NULL; /* avoid compilation warnings */
3323 num_ldrv = 0;
3324
3325 /*
3326 * Make sure only USCSICMD are issued through this interface.
3327 * MIMD application would still fire different command.
3328 */
3329 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3330 return -EINVAL;
3331 }
3332
3333 /*
3334 * Check and convert a possible MIMD command to NIT command.
3335 * mega_m_to_n() copies the data from the user space, so we do not
3336 * have to do it here.
3337 * NOTE: We will need some user address to copyout the data, therefore
3338 * the inteface layer will also provide us with the required user
3339 * addresses.
3340 */
3341 memset(&uioc, 0, sizeof(nitioctl_t));
3342 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3343 return rval;
3344
3345
3346 switch( uioc.opcode ) {
3347
3348 case GET_DRIVER_VER:
3349 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3350 return (-EFAULT);
3351
3352 break;
3353
3354 case GET_N_ADAP:
3355 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3356 return (-EFAULT);
3357
3358 /*
3359 * Shucks. MIMD interface returns a positive value for number
3360 * of adapters. TODO: Change it to return 0 when there is no
3361 * applicatio using mimd interface.
3362 */
3363 return hba_count;
3364
3365 case GET_ADAP_INFO:
3366
3367 /*
3368 * Which adapter
3369 */
3370 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3371 return (-ENODEV);
3372
3373 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3374 sizeof(struct mcontroller)) )
3375 return (-EFAULT);
3376 break;
3377
3378#if MEGA_HAVE_STATS
3379
3380 case GET_STATS:
3381 /*
3382 * Which adapter
3383 */
3384 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3385 return (-ENODEV);
3386
3387 adapter = hba_soft_state[adapno];
3388
3389 ustats = uioc.uioc_uaddr;
3390
3391 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3392 return (-EFAULT);
3393
3394 /*
3395 * Check for the validity of the logical drive number
3396 */
3397 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3398
3399 if( copy_to_user(ustats->nreads, adapter->nreads,
3400 num_ldrv*sizeof(u32)) )
3401 return -EFAULT;
3402
3403 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3404 num_ldrv*sizeof(u32)) )
3405 return -EFAULT;
3406
3407 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3408 num_ldrv*sizeof(u32)) )
3409 return -EFAULT;
3410
3411 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3412 num_ldrv*sizeof(u32)) )
3413 return -EFAULT;
3414
3415 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3416 num_ldrv*sizeof(u32)) )
3417 return -EFAULT;
3418
3419 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3420 num_ldrv*sizeof(u32)) )
3421 return -EFAULT;
3422
3423 return 0;
3424
3425#endif
3426 case MBOX_CMD:
3427
3428 /*
3429 * Which adapter
3430 */
3431 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3432 return (-ENODEV);
3433
3434 adapter = hba_soft_state[adapno];
3435
3436 /*
3437 * Deletion of logical drive is a special case. The adapter
3438 * should be quiescent before this command is issued.
3439 */
3440 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3441 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3442
3443 /*
3444 * Do we support this feature
3445 */
3446 if( !adapter->support_random_del ) {
3447 printk(KERN_WARNING "megaraid: logdrv ");
3448 printk("delete on non-supporting F/W.\n");
3449
3450 return (-EINVAL);
3451 }
3452
3453 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3454
3455 if( rval == 0 ) {
3456 memset(&mc, 0, sizeof(megacmd_t));
3457
3458 mc.status = rval;
3459
3460 rval = mega_n_to_m((void __user *)arg, &mc);
3461 }
3462
3463 return rval;
3464 }
3465 /*
3466 * This interface only support the regular passthru commands.
3467 * Reject extended passthru and 64-bit passthru
3468 */
3469 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3470 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3471
3472 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3473
3474 return (-EINVAL);
3475 }
3476
3477 /*
3478 * For all internal commands, the buffer must be allocated in
3479 * <4GB address range
3480 */
3481 if( make_local_pdev(adapter, &pdev) != 0 )
3482 return -EIO;
3483
3484 /* Is it a passthru command or a DCMD */
3485 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3486 /* Passthru commands */
3487
3488 pthru = pci_alloc_consistent(pdev,
3489 sizeof(mega_passthru),
3490 &pthru_dma_hndl);
3491
3492 if( pthru == NULL ) {
3493 free_local_pdev(pdev);
3494 return (-ENOMEM);
3495 }
3496
3497 /*
3498 * The user passthru structure
3499 */
de5952e9 3500 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
1da177e4
LT		 3501
3502 /*
3503 * Copy in the user passthru here.
3504 */
3505 if( copy_from_user(pthru, upthru,
3506 sizeof(mega_passthru)) ) {
3507
3508 pci_free_consistent(pdev,
3509 sizeof(mega_passthru), pthru,
3510 pthru_dma_hndl);
3511
3512 free_local_pdev(pdev);
3513
3514 return (-EFAULT);
3515 }
3516
3517 /*
3518 * Is there a data transfer
3519 */
3520 if( pthru->dataxferlen ) {
3521 data = pci_alloc_consistent(pdev,
3522 pthru->dataxferlen,
3523 &data_dma_hndl);
3524
3525 if( data == NULL ) {
3526 pci_free_consistent(pdev,
3527 sizeof(mega_passthru),
3528 pthru,
3529 pthru_dma_hndl);
3530
3531 free_local_pdev(pdev);
3532
3533 return (-ENOMEM);
3534 }
3535
3536 /*
3537 * Save the user address and point the kernel
3538 * address at just allocated memory
3539 */
3540 uxferaddr = pthru->dataxferaddr;
3541 pthru->dataxferaddr = data_dma_hndl;
3542 }
3543
3544
3545 /*
3546 * Is data coming down-stream
3547 */
3548 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3549 /*
3550 * Get the user data
3551 */
de5952e9 3552 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
1da177e4
LT		 3553 pthru->dataxferlen) ) {
3554 rval = (-EFAULT);
3555 goto freemem_and_return;
3556 }
3557 }
3558
3559 memset(&mc, 0, sizeof(megacmd_t));
3560
3561 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3562 mc.xferaddr = (u32)pthru_dma_hndl;
3563
3564 /*
3565 * Issue the command
3566 */
cb0258a2 3567 mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 3568
3569 rval = mega_n_to_m((void __user *)arg, &mc);
3570
3571 if( rval ) goto freemem_and_return;
3572
3573
3574 /*
3575 * Is data going up-stream
3576 */
3577 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
de5952e9 3578 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
1da177e4
LT		 3579 pthru->dataxferlen) ) {
3580 rval = (-EFAULT);
3581 }
3582 }
3583
3584 /*
3585 * Send the request sense data also, irrespective of
3586 * whether the user has asked for it or not.
3587 */
2d2f8d59
JJ		 3588 if (copy_to_user(upthru->reqsensearea,
3589 pthru->reqsensearea, 14))
3590 rval = -EFAULT;
1da177e4
LT		 3591
3592freemem_and_return:
3593 if( pthru->dataxferlen ) {
3594 pci_free_consistent(pdev,
3595 pthru->dataxferlen, data,
3596 data_dma_hndl);
3597 }
3598
3599 pci_free_consistent(pdev, sizeof(mega_passthru),
3600 pthru, pthru_dma_hndl);
3601
3602 free_local_pdev(pdev);
3603
3604 return rval;
3605 }
3606 else {
3607 /* DCMD commands */
3608
3609 /*
3610 * Is there a data transfer
3611 */
3612 if( uioc.xferlen ) {
3613 data = pci_alloc_consistent(pdev,
3614 uioc.xferlen, &data_dma_hndl);
3615
3616 if( data == NULL ) {
3617 free_local_pdev(pdev);
3618 return (-ENOMEM);
3619 }
3620
3621 uxferaddr = MBOX(uioc)->xferaddr;
3622 }
3623
3624 /*
3625 * Is data coming down-stream
3626 */
3627 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3628 /*
3629 * Get the user data
3630 */
de5952e9 3631 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
1da177e4
LT		 3632 uioc.xferlen) ) {
3633
3634 pci_free_consistent(pdev,
3635 uioc.xferlen,
3636 data, data_dma_hndl);
3637
3638 free_local_pdev(pdev);
3639
3640 return (-EFAULT);
3641 }
3642 }
3643
3644 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3645
3646 mc.xferaddr = (u32)data_dma_hndl;
3647
3648 /*
3649 * Issue the command
3650 */
cb0258a2 3651 mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 3652
3653 rval = mega_n_to_m((void __user *)arg, &mc);
3654
3655 if( rval ) {
3656 if( uioc.xferlen ) {
3657 pci_free_consistent(pdev,
3658 uioc.xferlen, data,
3659 data_dma_hndl);
3660 }
3661
3662 free_local_pdev(pdev);
3663
3664 return rval;
3665 }
3666
3667 /*
3668 * Is data going up-stream
3669 */
3670 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
de5952e9 3671 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
1da177e4
LT		 3672 uioc.xferlen) ) {
3673
3674 rval = (-EFAULT);
3675 }
3676 }
3677
3678 if( uioc.xferlen ) {
3679 pci_free_consistent(pdev,
3680 uioc.xferlen, data,
3681 data_dma_hndl);
3682 }
3683
3684 free_local_pdev(pdev);
3685
3686 return rval;
3687 }
3688
3689 default:
3690 return (-EINVAL);
3691 }
3692
3693 return 0;
3694}
3695
3696/**
3697 * mega_m_to_n()
3698 * @arg - user address
3699 * @uioc - new ioctl structure
3700 *
3701 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3702 * structure
3703 *
3704 * Converts the older mimd ioctl structure to newer NIT structure
3705 */
3706static int
3707mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3708{
3709 struct uioctl_t uioc_mimd;
3710 char signature[8] = {0};
3711 u8 opcode;
3712 u8 subopcode;
3713
3714
3715 /*
3716 * check is the application conforms to NIT. We do not have to do much
3717 * in that case.
3718 * We exploit the fact that the signature is stored in the very
3719 * begining of the structure.
3720 */
3721
3722 if( copy_from_user(signature, arg, 7) )
3723 return (-EFAULT);
3724
3725 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3726
3727 /*
3728 * NOTE NOTE: The nit ioctl is still under flux because of
3729 * change of mailbox definition, in HPE. No applications yet
3730 * use this interface and let's not have applications use this
3731 * interface till the new specifitions are in place.
3732 */
3733 return -EINVAL;
3734#if 0
3735 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3736 return (-EFAULT);
3737 return 0;
3738#endif
3739 }
3740
3741 /*
3742 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3743 *
3744 * Get the user ioctl structure
3745 */
3746 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3747 return (-EFAULT);
3748
3749
3750 /*
3751 * Get the opcode and subopcode for the commands
3752 */
3753 opcode = uioc_mimd.ui.fcs.opcode;
3754 subopcode = uioc_mimd.ui.fcs.subopcode;
3755
3756 switch (opcode) {
3757 case 0x82:
3758
3759 switch (subopcode) {
3760
3761 case MEGAIOC_QDRVRVER: /* Query driver version */
3762 uioc->opcode = GET_DRIVER_VER;
3763 uioc->uioc_uaddr = uioc_mimd.data;
3764 break;
3765
3766 case MEGAIOC_QNADAP: /* Get # of adapters */
3767 uioc->opcode = GET_N_ADAP;
3768 uioc->uioc_uaddr = uioc_mimd.data;
3769 break;
3770
3771 case MEGAIOC_QADAPINFO: /* Get adapter information */
3772 uioc->opcode = GET_ADAP_INFO;
3773 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3774 uioc->uioc_uaddr = uioc_mimd.data;
3775 break;
3776
3777 default:
3778 return(-EINVAL);
3779 }
3780
3781 break;
3782
3783
3784 case 0x81:
3785
3786 uioc->opcode = MBOX_CMD;
3787 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3788
3789 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3790
3791 uioc->xferlen = uioc_mimd.ui.fcs.length;
3792
3793 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3794 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3795
3796 break;
3797
3798 case 0x80:
3799
3800 uioc->opcode = MBOX_CMD;
3801 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3802
3803 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3804
3805 /*
3806 * Choose the xferlen bigger of input and output data
3807 */
3808 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3809 uioc_mimd.outlen : uioc_mimd.inlen;
3810
3811 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3812 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3813
3814 break;
3815
3816 default:
3817 return (-EINVAL);
3818
3819 }
3820
3821 return 0;
3822}
3823
3824/*
3825 * mega_n_to_m()
3826 * @arg - user address
3827 * @mc - mailbox command
3828 *
3829 * Updates the status information to the application, depending on application
3830 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3831 */
3832static int
3833mega_n_to_m(void __user *arg, megacmd_t *mc)
3834{
3835 nitioctl_t __user *uiocp;
3836 megacmd_t __user *umc;
3837 mega_passthru __user *upthru;
3838 struct uioctl_t __user *uioc_mimd;
3839 char signature[8] = {0};
3840
3841 /*
3842 * check is the application conforms to NIT.
3843 */
3844 if( copy_from_user(signature, arg, 7) )
3845 return -EFAULT;
3846
3847 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3848
3849 uiocp = arg;
3850
3851 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3852 return (-EFAULT);
3853
3854 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3855
3856 umc = MBOX_P(uiocp);
3857
3858 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3859 return -EFAULT;
3860
3861 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3862 return (-EFAULT);
3863 }
3864 }
3865 else {
3866 uioc_mimd = arg;
3867
3868 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3869 return (-EFAULT);
3870
3871 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3872
3873 umc = (megacmd_t __user *)uioc_mimd->mbox;
3874
3875 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3876 return (-EFAULT);
3877
3878 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3879 return (-EFAULT);
3880 }
3881 }
3882
3883 return 0;
3884}
3885
3886
3887/*
3888 * MEGARAID 'FW' commands.
3889 */
3890
3891/**
3892 * mega_is_bios_enabled()
3893 * @adapter - pointer to our soft state
3894 *
3895 * issue command to find out if the BIOS is enabled for this controller
3896 */
3897static int
3898mega_is_bios_enabled(adapter_t *adapter)
3899{
3900 unsigned char raw_mbox[sizeof(struct mbox_out)];
3901 mbox_t *mbox;
3902 int ret;
3903
3904 mbox = (mbox_t *)raw_mbox;
3905
3906 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3907
3908 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3909
3910 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3911
3912 raw_mbox[0] = IS_BIOS_ENABLED;
3913 raw_mbox[2] = GET_BIOS;
3914
3915
3916 ret = issue_scb_block(adapter, raw_mbox);
3917
3918 return *(char *)adapter->mega_buffer;
3919}
3920
3921
3922/**
3923 * mega_enum_raid_scsi()
3924 * @adapter - pointer to our soft state
3925 *
3926 * Find out what channels are RAID/SCSI. This information is used to
3927 * differentiate the virtual channels and physical channels and to support
3928 * ROMB feature and non-disk devices.
3929 */
3930static void
3931mega_enum_raid_scsi(adapter_t *adapter)
3932{
3933 unsigned char raw_mbox[sizeof(struct mbox_out)];
3934 mbox_t *mbox;
3935 int i;
3936
3937 mbox = (mbox_t *)raw_mbox;
3938
3939 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3940
3941 /*
3942 * issue command to find out what channels are raid/scsi
3943 */
3944 raw_mbox[0] = CHNL_CLASS;
3945 raw_mbox[2] = GET_CHNL_CLASS;
3946
3947 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3948
3949 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3950
3951 /*
3952 * Non-ROMB firmware fail this command, so all channels
3953 * must be shown RAID
3954 */
3955 adapter->mega_ch_class = 0xFF;
3956
3957 if(!issue_scb_block(adapter, raw_mbox)) {
3958 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3959
3960 }
3961
3962 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3963 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3964 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3965 i);
3966 }
3967 else {
3968 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3969 i);
3970 }
3971 }
3972
3973 return;
3974}
3975
3976
3977/**
3978 * mega_get_boot_drv()
3979 * @adapter - pointer to our soft state
3980 *
3981 * Find out which device is the boot device. Note, any logical drive or any
3982 * phyical device (e.g., a CDROM) can be designated as a boot device.
3983 */
3984static void
3985mega_get_boot_drv(adapter_t *adapter)
3986{
3987 struct private_bios_data *prv_bios_data;
3988 unsigned char raw_mbox[sizeof(struct mbox_out)];
3989 mbox_t *mbox;
3990 u16 cksum = 0;
3991 u8 *cksum_p;
3992 u8 boot_pdrv;
3993 int i;
3994
3995 mbox = (mbox_t *)raw_mbox;
3996
3997 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3998
3999 raw_mbox[0] = BIOS_PVT_DATA;
4000 raw_mbox[2] = GET_BIOS_PVT_DATA;
4001
4002 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4003
4004 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4005
4006 adapter->boot_ldrv_enabled = 0;
4007 adapter->boot_ldrv = 0;
4008
4009 adapter->boot_pdrv_enabled = 0;
4010 adapter->boot_pdrv_ch = 0;
4011 adapter->boot_pdrv_tgt = 0;
4012
4013 if(issue_scb_block(adapter, raw_mbox) == 0) {
4014 prv_bios_data =
4015 (struct private_bios_data *)adapter->mega_buffer;
4016
4017 cksum = 0;
4018 cksum_p = (char *)prv_bios_data;
4019 for (i = 0; i < 14; i++ ) {
4020 cksum += (u16)(*cksum_p++);
4021 }
4022
4023 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4024
4025 /*
4026 * If MSB is set, a physical drive is set as boot
4027 * device
4028 */
4029 if( prv_bios_data->boot_drv & 0x80 ) {
4030 adapter->boot_pdrv_enabled = 1;
4031 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4032 adapter->boot_pdrv_ch = boot_pdrv / 16;
4033 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4034 }
4035 else {
4036 adapter->boot_ldrv_enabled = 1;
4037 adapter->boot_ldrv = prv_bios_data->boot_drv;
4038 }
4039 }
4040 }
4041
4042}
4043
4044/**
4045 * mega_support_random_del()
4046 * @adapter - pointer to our soft state
4047 *
4048 * Find out if this controller supports random deletion and addition of
4049 * logical drives
4050 */
4051static int
4052mega_support_random_del(adapter_t *adapter)
4053{
4054 unsigned char raw_mbox[sizeof(struct mbox_out)];
4055 mbox_t *mbox;
4056 int rval;
4057
4058 mbox = (mbox_t *)raw_mbox;
4059
4060 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4061
4062 /*
4063 * issue command
4064 */
4065 raw_mbox[0] = FC_DEL_LOGDRV;
4066 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4067
4068 rval = issue_scb_block(adapter, raw_mbox);
4069
4070 return !rval;
4071}
4072
4073
4074/**
4075 * mega_support_ext_cdb()
4076 * @adapter - pointer to our soft state
4077 *
4078 * Find out if this firmware support cdblen > 10
4079 */
4080static int
4081mega_support_ext_cdb(adapter_t *adapter)
4082{
4083 unsigned char raw_mbox[sizeof(struct mbox_out)];
4084 mbox_t *mbox;
4085 int rval;
4086
4087 mbox = (mbox_t *)raw_mbox;
4088
4089 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4090 /*
4091 * issue command to find out if controller supports extended CDBs.
4092 */
4093 raw_mbox[0] = 0xA4;
4094 raw_mbox[2] = 0x16;
4095
4096 rval = issue_scb_block(adapter, raw_mbox);
4097
4098 return !rval;
4099}
4100
4101
4102/**
4103 * mega_del_logdrv()
4104 * @adapter - pointer to our soft state
4105 * @logdrv - logical drive to be deleted
4106 *
4107 * Delete the specified logical drive. It is the responsibility of the user
4108 * app to let the OS know about this operation.
4109 */
4110static int
4111mega_del_logdrv(adapter_t *adapter, int logdrv)
4112{
4113 unsigned long flags;
4114 scb_t *scb;
4115 int rval;
4116
4117 /*
4118 * Stop sending commands to the controller, queue them internally.
4119 * When deletion is complete, ISR will flush the queue.
4120 */
4121 atomic_set(&adapter->quiescent, 1);
4122
4123 /*
4124 * Wait till all the issued commands are complete and there are no
4125 * commands in the pending queue
4126 */
4127 while (atomic_read(&adapter->pend_cmds) > 0 ||
4128 !list_empty(&adapter->pending_list))
4129 msleep(1000); /* sleep for 1s */
4130
4131 rval = mega_do_del_logdrv(adapter, logdrv);
4132
4133 spin_lock_irqsave(&adapter->lock, flags);
4134
4135 /*
4136 * If delete operation was successful, add 0x80 to the logical drive
4137 * ids for commands in the pending queue.
4138 */
4139 if (adapter->read_ldidmap) {
4140 struct list_head *pos;
4141 list_for_each(pos, &adapter->pending_list) {
4142 scb = list_entry(pos, scb_t, list);
4143 if (scb->pthru->logdrv < 0x80 )
4144 scb->pthru->logdrv += 0x80;
4145 }
4146 }
4147
4148 atomic_set(&adapter->quiescent, 0);
4149
4150 mega_runpendq(adapter);
4151
4152 spin_unlock_irqrestore(&adapter->lock, flags);
4153
4154 return rval;
4155}
4156
4157
4158static int
4159mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4160{
4161 megacmd_t mc;
4162 int rval;
4163
4164 memset( &mc, 0, sizeof(megacmd_t));
4165
4166 mc.cmd = FC_DEL_LOGDRV;
4167 mc.opcode = OP_DEL_LOGDRV;
4168 mc.subopcode = logdrv;
4169
cb0258a2 4170 rval = mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 4171
4172 /* log this event */
4173 if(rval) {
4174 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4175 return rval;
4176 }
4177
4178 /*
4179 * After deleting first logical drive, the logical drives must be
4180 * addressed by adding 0x80 to the logical drive id.
4181 */
4182 adapter->read_ldidmap = 1;
4183
4184 return rval;
4185}
4186
4187
4188/**
4189 * mega_get_max_sgl()
4190 * @adapter - pointer to our soft state
4191 *
4192 * Find out the maximum number of scatter-gather elements supported by this
4193 * version of the firmware
4194 */
4195static void
4196mega_get_max_sgl(adapter_t *adapter)
4197{
4198 unsigned char raw_mbox[sizeof(struct mbox_out)];
4199 mbox_t *mbox;
4200
4201 mbox = (mbox_t *)raw_mbox;
4202
4203 memset(mbox, 0, sizeof(raw_mbox));
4204
4205 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4206
4207 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4208
4209 raw_mbox[0] = MAIN_MISC_OPCODE;
4210 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4211
4212
4213 if( issue_scb_block(adapter, raw_mbox) ) {
4214 /*
4215 * f/w does not support this command. Choose the default value
4216 */
4217 adapter->sglen = MIN_SGLIST;
4218 }
4219 else {
4220 adapter->sglen = *((char *)adapter->mega_buffer);
4221
4222 /*
4223 * Make sure this is not more than the resources we are
4224 * planning to allocate
4225 */
4226 if ( adapter->sglen > MAX_SGLIST )
4227 adapter->sglen = MAX_SGLIST;
4228 }
4229
4230 return;
4231}
4232
4233
4234/**
4235 * mega_support_cluster()
4236 * @adapter - pointer to our soft state
4237 *
4238 * Find out if this firmware support cluster calls.
4239 */
4240static int
4241mega_support_cluster(adapter_t *adapter)
4242{
4243 unsigned char raw_mbox[sizeof(struct mbox_out)];
4244 mbox_t *mbox;
4245
4246 mbox = (mbox_t *)raw_mbox;
4247
4248 memset(mbox, 0, sizeof(raw_mbox));
4249
4250 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4251
4252 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4253
4254 /*
4255 * Try to get the initiator id. This command will succeed iff the
4256 * clustering is available on this HBA.
4257 */
4258 raw_mbox[0] = MEGA_GET_TARGET_ID;
4259
4260 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4261
4262 /*
4263 * Cluster support available. Get the initiator target id.
4264 * Tell our id to mid-layer too.
4265 */
4266 adapter->this_id = *(u32 *)adapter->mega_buffer;
4267 adapter->host->this_id = adapter->this_id;
4268
4269 return 1;
4270 }
4271
4272 return 0;
4273}
4274
84a3c97b 4275#ifdef CONFIG_PROC_FS
1da177e4
LT		 4276/**
4277 * mega_adapinq()
4278 * @adapter - pointer to our soft state
4279 * @dma_handle - DMA address of the buffer
4280 *
4281 * Issue internal comamnds while interrupts are available.
4282 * We only issue direct mailbox commands from within the driver. ioctl()
4283 * interface using these routines can issue passthru commands.
4284 */
4285static int
4286mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4287{
4288 megacmd_t mc;
4289
4290 memset(&mc, 0, sizeof(megacmd_t));
4291
4292 if( adapter->flag & BOARD_40LD ) {
4293 mc.cmd = FC_NEW_CONFIG;
4294 mc.opcode = NC_SUBOP_ENQUIRY3;
4295 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4296 }
4297 else {
4298 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4299 }
4300
4301 mc.xferaddr = (u32)dma_handle;
4302
cb0258a2 4303 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 4304 return -1;
4305 }
4306
4307 return 0;
4308}
4309
4310
4311/** mega_internal_dev_inquiry()
4312 * @adapter - pointer to our soft state
4313 * @ch - channel for this device
4314 * @tgt - ID of this device
4315 * @buf_dma_handle - DMA address of the buffer
4316 *
4317 * Issue the scsi inquiry for the specified device.
4318 */
4319static int
4320mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4321 dma_addr_t buf_dma_handle)
4322{
4323 mega_passthru *pthru;
4324 dma_addr_t pthru_dma_handle;
4325 megacmd_t mc;
4326 int rval;
4327 struct pci_dev *pdev;
4328
4329
4330 /*
4331 * For all internal commands, the buffer must be allocated in <4GB
4332 * address range
4333 */
4334 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4335
4336 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4337 &pthru_dma_handle);
4338
4339 if( pthru == NULL ) {
4340 free_local_pdev(pdev);
4341 return -1;
4342 }
4343
4344 pthru->timeout = 2;
4345 pthru->ars = 1;
4346 pthru->reqsenselen = 14;
4347 pthru->islogical = 0;
4348
4349 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4350
4351 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4352
4353 pthru->cdblen = 6;
4354
4355 pthru->cdb[0] = INQUIRY;
4356 pthru->cdb[1] = 0;
4357 pthru->cdb[2] = 0;
4358 pthru->cdb[3] = 0;
4359 pthru->cdb[4] = 255;
4360 pthru->cdb[5] = 0;
4361
4362
4363 pthru->dataxferaddr = (u32)buf_dma_handle;
4364 pthru->dataxferlen = 256;
4365
4366 memset(&mc, 0, sizeof(megacmd_t));
4367
4368 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4369 mc.xferaddr = (u32)pthru_dma_handle;
4370
cb0258a2 4371 rval = mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 4372
4373 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4374 pthru_dma_handle);
4375
4376 free_local_pdev(pdev);
4377
4378 return rval;
4379}
84a3c97b 4380#endif
1da177e4
LT		 4381
4382/**
4383 * mega_internal_command()
4384 * @adapter - pointer to our soft state
1da177e4
LT		 4385 * @mc - the mailbox command
4386 * @pthru - Passthru structure for DCDB commands
4387 *
4388 * Issue the internal commands in interrupt mode.
4389 * The last argument is the address of the passthru structure if the command
4390 * to be fired is a passthru command
4391 *
4392 * lockscope specifies whether the caller has already acquired the lock. Of
4393 * course, the caller must know which lock we are talking about.
4394 *
4395 * Note: parameter 'pthru' is null for non-passthru commands.
4396 */
4397static int
cb0258a2 4398mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
1da177e4
LT		 4399{
4400 Scsi_Cmnd *scmd;
4401 struct scsi_device *sdev;
1da177e4
LT		 4402 scb_t *scb;
4403 int rval;
4404
4405 /*
4406 * The internal commands share one command id and hence are
4407 * serialized. This is so because we want to reserve maximum number of
4408 * available command ids for the I/O commands.
4409 */
0b950672 4410 mutex_lock(&adapter->int_mtx);
1da177e4
LT		 4411
4412 scb = &adapter->int_scb;
4413 memset(scb, 0, sizeof(scb_t));
4414
4415 scmd = &adapter->int_scmd;
4416 memset(scmd, 0, sizeof(Scsi_Cmnd));
4417
bbfbbbc1 4418 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
1da177e4
LT		 4419 scmd->device = sdev;
4420
4421 scmd->device->host = adapter->host;
3f6270ef 4422 scmd->host_scribble = (void *)scb;
1da177e4
LT		 4423 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4424
4425 scb->state |= SCB_ACTIVE;
4426 scb->cmd = scmd;
4427
4428 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4429
4430 /*
4431 * Is it a passthru command
4432 */
4433 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4434
4435 scb->pthru = pthru;
4436 }
4437
4438 scb->idx = CMDID_INT_CMDS;
4439
1da177e4
LT		 4440 megaraid_queue(scmd, mega_internal_done);
4441
8d115f84 4442 wait_for_completion(&adapter->int_waitq);
1da177e4
LT		 4443
4444 rval = scmd->result;
4445 mc->status = scmd->result;
4446 kfree(sdev);
4447
4448 /*
4449 * Print a debug message for all failed commands. Applications can use
4450 * this information.
4451 */
4452 if( scmd->result && trace_level ) {
4453 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4454 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4455 }
4456
0b950672 4457 mutex_unlock(&adapter->int_mtx);
1da177e4
LT		 4458
4459 return rval;
4460}
4461
4462
4463/**
4464 * mega_internal_done()
4465 * @scmd - internal scsi command
4466 *
4467 * Callback routine for internal commands.
4468 */
4469static void
4470mega_internal_done(Scsi_Cmnd *scmd)
4471{
4472 adapter_t *adapter;
4473
4474 adapter = (adapter_t *)scmd->device->host->hostdata;
4475
8d115f84 4476 complete(&adapter->int_waitq);
1da177e4
LT		 4477
4478}
4479
4480
4481static struct scsi_host_template megaraid_template = {
4482 .module = THIS_MODULE,
4483 .name = "MegaRAID",
3492b328 4484 .proc_name = "megaraid_legacy",
1da177e4
LT		 4485 .info = megaraid_info,
4486 .queuecommand = megaraid_queue,
4487 .bios_param = megaraid_biosparam,
4488 .max_sectors = MAX_SECTORS_PER_IO,
4489 .can_queue = MAX_COMMANDS,
4490 .this_id = DEFAULT_INITIATOR_ID,
4491 .sg_tablesize = MAX_SGLIST,
4492 .cmd_per_lun = DEF_CMD_PER_LUN,
4493 .use_clustering = ENABLE_CLUSTERING,
4494 .eh_abort_handler = megaraid_abort,
4495 .eh_device_reset_handler = megaraid_reset,
4496 .eh_bus_reset_handler = megaraid_reset,
4497 .eh_host_reset_handler = megaraid_reset,
4498};
4499
4500static int __devinit
4501megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4502{
4503 struct Scsi_Host *host;
4504 adapter_t *adapter;
4505 unsigned long mega_baseport, tbase, flag = 0;
4506 u16 subsysid, subsysvid;
4507 u8 pci_bus, pci_dev_func;
4508 int irq, i, j;
4509 int error = -ENODEV;
4510
4511 if (pci_enable_device(pdev))
4512 goto out;
4513 pci_set_master(pdev);
4514
4515 pci_bus = pdev->bus->number;
4516 pci_dev_func = pdev->devfn;
4517
4518 /*
4519 * The megaraid3 stuff reports the ID of the Intel part which is not
4520 * remotely specific to the megaraid
4521 */
4522 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4523 u16 magic;
4524 /*
4525 * Don't fall over the Compaq management cards using the same
4526 * PCI identifier
4527 */
4528 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4529 pdev->subsystem_device == 0xC000)
4530 return -ENODEV;
4531 /* Now check the magic signature byte */
4532 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4533 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4534 return -ENODEV;
4535 /* Ok it is probably a megaraid */
4536 }
4537
4538 /*
4539 * For these vendor and device ids, signature offsets are not
4540 * valid and 64 bit is implicit
4541 */
4542 if (id->driver_data & BOARD_64BIT)
4543 flag |= BOARD_64BIT;
4544 else {
4545 u32 magic64;
4546
4547 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4548 if (magic64 == HBA_SIGNATURE_64BIT)
4549 flag |= BOARD_64BIT;
4550 }
4551
4552 subsysvid = pdev->subsystem_vendor;
4553 subsysid = pdev->subsystem_device;
4554
4555 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4556 id->vendor, id->device, pci_bus);
4557
4558 printk("slot %d:func %d\n",
4559 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4560
4561 /* Read the base port and IRQ from PCI */
4562 mega_baseport = pci_resource_start(pdev, 0);
4563 irq = pdev->irq;
4564
4565 tbase = mega_baseport;
4566 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4567 flag |= BOARD_MEMMAP;
4568
4569 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4570 printk(KERN_WARNING "megaraid: mem region busy!\n");
4571 goto out_disable_device;
4572 }
4573
4574 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4575 if (!mega_baseport) {
4576 printk(KERN_WARNING
4577 "megaraid: could not map hba memory\n");
4578 goto out_release_region;
4579 }
4580 } else {
4581 flag |= BOARD_IOMAP;
4582 mega_baseport += 0x10;
4583
4584 if (!request_region(mega_baseport, 16, "megaraid"))
4585 goto out_disable_device;
4586 }
4587
4588 /* Initialize SCSI Host structure */
4589 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4590 if (!host)
4591 goto out_iounmap;
4592
4593 adapter = (adapter_t *)host->hostdata;
4594 memset(adapter, 0, sizeof(adapter_t));
4595
4596 printk(KERN_NOTICE
4597 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4598 host->host_no, mega_baseport, irq);
4599
4600 adapter->base = mega_baseport;
00769ec4
JG		 4601 if (flag & BOARD_MEMMAP)
4602 adapter->mmio_base = (void __iomem *) mega_baseport;
1da177e4
LT		 4603
4604 INIT_LIST_HEAD(&adapter->free_list);
4605 INIT_LIST_HEAD(&adapter->pending_list);
4606 INIT_LIST_HEAD(&adapter->completed_list);
4607
4608 adapter->flag = flag;
4609 spin_lock_init(&adapter->lock);
1da177e4
LT		 4610
4611 host->cmd_per_lun = max_cmd_per_lun;
4612 host->max_sectors = max_sectors_per_io;
4613
4614 adapter->dev = pdev;
4615 adapter->host = host;
4616
4617 adapter->host->irq = irq;
4618
4619 if (flag & BOARD_MEMMAP)
4620 adapter->host->base = tbase;
4621 else {
4622 adapter->host->io_port = tbase;
4623 adapter->host->n_io_port = 16;
4624 }
4625
4626 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4627
4628 /*
4629 * Allocate buffer to issue internal commands.
4630 */
4631 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4632 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4633 if (!adapter->mega_buffer) {
4634 printk(KERN_WARNING "megaraid: out of RAM.\n");
4635 goto out_host_put;
4636 }
4637
4638 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4639 if (!adapter->scb_list) {
4640 printk(KERN_WARNING "megaraid: out of RAM.\n");
4641 goto out_free_cmd_buffer;
4642 }
4643
4644 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4645 megaraid_isr_memmapped : megaraid_isr_iomapped,
1d6f359a 4646 IRQF_SHARED, "megaraid", adapter)) {
1da177e4
LT		 4647 printk(KERN_WARNING
4648 "megaraid: Couldn't register IRQ %d!\n", irq);
4649 goto out_free_scb_list;
4650 }
4651
4652 if (mega_setup_mailbox(adapter))
4653 goto out_free_irq;
4654
4655 if (mega_query_adapter(adapter))
4656 goto out_free_mbox;
4657
4658 /*
4659 * Have checks for some buggy f/w
4660 */
4661 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4662 /*
4663 * Which firmware
4664 */
4665 if (!strcmp(adapter->fw_version, "3.00") ||
4666 !strcmp(adapter->fw_version, "3.01")) {
4667
4668 printk( KERN_WARNING
4669 "megaraid: Your card is a Dell PERC "
4670 "2/SC RAID controller with "
4671 "firmware\nmegaraid: 3.00 or 3.01. "
4672 "This driver is known to have "
4673 "corruption issues\nmegaraid: with "
4674 "those firmware versions on this "
4675 "specific card. In order\nmegaraid: "
4676 "to protect your data, please upgrade "
4677 "your firmware to version\nmegaraid: "
4678 "3.10 or later, available from the "
4679 "Dell Technical Support web\n"
4680 "megaraid: site at\nhttp://support."
4681 "dell.com/us/en/filelib/download/"
4682 "index.asp?fileid=2940\n"
4683 );
4684 }
4685 }
4686
4687 /*
4688 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4689 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4690 * support, since this firmware cannot handle 64 bit
4691 * addressing
4692 */
4693 if ((subsysvid == HP_SUBSYS_VID) &&
4694 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4695 /*
4696 * which firmware
4697 */
4698 if (!strcmp(adapter->fw_version, "H01.07") ||
4699 !strcmp(adapter->fw_version, "H01.08") ||
4700 !strcmp(adapter->fw_version, "H01.09") ) {
4701 printk(KERN_WARNING
4702 "megaraid: Firmware H.01.07, "
4703 "H.01.08, and H.01.09 on 1M/2M "
4704 "controllers\n"
4705 "megaraid: do not support 64 bit "
4706 "addressing.\nmegaraid: DISABLING "
4707 "64 bit support.\n");
4708 adapter->flag &= ~BOARD_64BIT;
4709 }
4710 }
4711
4712 if (mega_is_bios_enabled(adapter))
4713 mega_hbas[hba_count].is_bios_enabled = 1;
4714 mega_hbas[hba_count].hostdata_addr = adapter;
4715
4716 /*
4717 * Find out which channel is raid and which is scsi. This is
4718 * for ROMB support.
4719 */
4720 mega_enum_raid_scsi(adapter);
4721
4722 /*
4723 * Find out if a logical drive is set as the boot drive. If
4724 * there is one, will make that as the first logical drive.
4725 * ROMB: Do we have to boot from a physical drive. Then all
4726 * the physical drives would appear before the logical disks.
4727 * Else, all the physical drives would be exported to the mid
4728 * layer after logical drives.
4729 */
4730 mega_get_boot_drv(adapter);
4731
4732 if (adapter->boot_pdrv_enabled) {
4733 j = adapter->product_info.nchannels;
4734 for( i = 0; i < j; i++ )
4735 adapter->logdrv_chan[i] = 0;
4736 for( i = j; i < NVIRT_CHAN + j; i++ )
4737 adapter->logdrv_chan[i] = 1;
4738 } else {
4739 for (i = 0; i < NVIRT_CHAN; i++)
4740 adapter->logdrv_chan[i] = 1;
4741 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4742 adapter->logdrv_chan[i] = 0;
4743 adapter->mega_ch_class <<= NVIRT_CHAN;
4744 }
4745
4746 /*
4747 * Do we support random deletion and addition of logical
4748 * drives
4749 */
4750 adapter->read_ldidmap = 0; /* set it after first logdrv
4751 delete cmd */
4752 adapter->support_random_del = mega_support_random_del(adapter);
4753
4754 /* Initialize SCBs */
4755 if (mega_init_scb(adapter))
4756 goto out_free_mbox;
4757
4758 /*
4759 * Reset the pending commands counter
4760 */
4761 atomic_set(&adapter->pend_cmds, 0);
4762
4763 /*
4764 * Reset the adapter quiescent flag
4765 */
4766 atomic_set(&adapter->quiescent, 0);
4767
4768 hba_soft_state[hba_count] = adapter;
4769
4770 /*
4771 * Fill in the structure which needs to be passed back to the
4772 * application when it does an ioctl() for controller related
4773 * information.
4774 */
4775 i = hba_count;
4776
4777 mcontroller[i].base = mega_baseport;
4778 mcontroller[i].irq = irq;
4779 mcontroller[i].numldrv = adapter->numldrv;
4780 mcontroller[i].pcibus = pci_bus;
4781 mcontroller[i].pcidev = id->device;
4782 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4783 mcontroller[i].pciid = -1;
4784 mcontroller[i].pcivendor = id->vendor;
4785 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4786 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4787
4788
4789 /* Set the Mode of addressing to 64 bit if we can */
4790 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
910638ae 4791 pci_set_dma_mask(pdev, DMA_64BIT_MASK);
1da177e4
LT		 4792 adapter->has_64bit_addr = 1;
4793 } else {
910638ae 4794 pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1da177e4
LT		 4795 adapter->has_64bit_addr = 0;
4796 }
4797
0b950672 4798 mutex_init(&adapter->int_mtx);
8d115f84 4799 init_completion(&adapter->int_waitq);
1da177e4
LT		 4800
4801 adapter->this_id = DEFAULT_INITIATOR_ID;
4802 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4803
4804#if MEGA_HAVE_CLUSTERING
4805 /*
4806 * Is cluster support enabled on this controller
4807 * Note: In a cluster the HBAs ( the initiators ) will have
4808 * different target IDs and we cannot assume it to be 7. Call
4809 * to mega_support_cluster() will get the target ids also if
4810 * the cluster support is available
4811 */
4812 adapter->has_cluster = mega_support_cluster(adapter);
4813 if (adapter->has_cluster) {
4814 printk(KERN_NOTICE
4815 "megaraid: Cluster driver, initiator id:%d\n",
4816 adapter->this_id);
4817 }
4818#endif
4819
4820 pci_set_drvdata(pdev, host);
4821
4822 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4823
4824 error = scsi_add_host(host, &pdev->dev);
4825 if (error)
4826 goto out_free_mbox;
4827
4828 scsi_scan_host(host);
4829 hba_count++;
4830 return 0;
4831
4832 out_free_mbox:
4833 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4834 adapter->una_mbox64, adapter->una_mbox64_dma);
4835 out_free_irq:
4836 free_irq(adapter->host->irq, adapter);
4837 out_free_scb_list:
4838 kfree(adapter->scb_list);
4839 out_free_cmd_buffer:
4840 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4841 adapter->mega_buffer, adapter->buf_dma_handle);
4842 out_host_put:
4843 scsi_host_put(host);
4844 out_iounmap:
4845 if (flag & BOARD_MEMMAP)
4846 iounmap((void *)mega_baseport);
4847 out_release_region:
4848 if (flag & BOARD_MEMMAP)
4849 release_mem_region(tbase, 128);
4850 else
4851 release_region(mega_baseport, 16);
4852 out_disable_device:
4853 pci_disable_device(pdev);
4854 out:
4855 return error;
4856}
4857
4858static void
4859__megaraid_shutdown(adapter_t *adapter)
4860{
4861 u_char raw_mbox[sizeof(struct mbox_out)];
4862 mbox_t *mbox = (mbox_t *)raw_mbox;
4863 int i;
4864
4865 /* Flush adapter cache */
4866 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4867 raw_mbox[0] = FLUSH_ADAPTER;
4868
4869 free_irq(adapter->host->irq, adapter);
4870
4871 /* Issue a blocking (interrupts disabled) command to the card */
4872 issue_scb_block(adapter, raw_mbox);
4873
4874 /* Flush disks cache */
4875 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4876 raw_mbox[0] = FLUSH_SYSTEM;
4877
4878 /* Issue a blocking (interrupts disabled) command to the card */
4879 issue_scb_block(adapter, raw_mbox);
4880
4881 if (atomic_read(&adapter->pend_cmds) > 0)
4882 printk(KERN_WARNING "megaraid: pending commands!!\n");
4883
4884 /*
4885 * Have a delibrate delay to make sure all the caches are
4886 * actually flushed.
4887 */
4888 for (i = 0; i <= 10; i++)
4889 mdelay(1000);
4890}
4891
bfd90dce 4892static void __devexit
1da177e4
LT		 4893megaraid_remove_one(struct pci_dev *pdev)
4894{
4895 struct Scsi_Host *host = pci_get_drvdata(pdev);
4896 adapter_t *adapter = (adapter_t *)host->hostdata;
1da177e4
LT		 4897
4898 scsi_remove_host(host);
4899
4900 __megaraid_shutdown(adapter);
4901
4902 /* Free our resources */
4903 if (adapter->flag & BOARD_MEMMAP) {
4904 iounmap((void *)adapter->base);
4905 release_mem_region(adapter->host->base, 128);
4906 } else
4907 release_region(adapter->base, 16);
4908
4909 mega_free_sgl(adapter);
4910
4911#ifdef CONFIG_PROC_FS
4912 if (adapter->controller_proc_dir_entry) {
4913 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4914 remove_proc_entry("config",
4915 adapter->controller_proc_dir_entry);
4916 remove_proc_entry("mailbox",
4917 adapter->controller_proc_dir_entry);
4918#if MEGA_HAVE_ENH_PROC
4919 remove_proc_entry("rebuild-rate",
4920 adapter->controller_proc_dir_entry);
4921 remove_proc_entry("battery-status",
4922 adapter->controller_proc_dir_entry);
4923
4924 remove_proc_entry("diskdrives-ch0",
4925 adapter->controller_proc_dir_entry);
4926 remove_proc_entry("diskdrives-ch1",
4927 adapter->controller_proc_dir_entry);
4928 remove_proc_entry("diskdrives-ch2",
4929 adapter->controller_proc_dir_entry);
4930 remove_proc_entry("diskdrives-ch3",
4931 adapter->controller_proc_dir_entry);
4932
4933 remove_proc_entry("raiddrives-0-9",
4934 adapter->controller_proc_dir_entry);
4935 remove_proc_entry("raiddrives-10-19",
4936 adapter->controller_proc_dir_entry);
4937 remove_proc_entry("raiddrives-20-29",
4938 adapter->controller_proc_dir_entry);
4939 remove_proc_entry("raiddrives-30-39",
4940 adapter->controller_proc_dir_entry);
4941#endif
84a3c97b 4942 {
4943 char buf[12] = { 0 };
4944 sprintf(buf, "hba%d", adapter->host->host_no);
4945 remove_proc_entry(buf, mega_proc_dir_entry);
4946 }
1da177e4
LT		 4947 }
4948#endif
4949
4950 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4951 adapter->mega_buffer, adapter->buf_dma_handle);
4952 kfree(adapter->scb_list);
4953 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4954 adapter->una_mbox64, adapter->una_mbox64_dma);
4955
4956 scsi_host_put(host);
4957 pci_disable_device(pdev);
4958
4959 hba_count--;
4960}
4961
4962static void
d18c3db5 4963megaraid_shutdown(struct pci_dev *pdev)
1da177e4 4964{
d18c3db5 4965 struct Scsi_Host *host = pci_get_drvdata(pdev);
1da177e4
LT		 4966 adapter_t *adapter = (adapter_t *)host->hostdata;
4967
4968 __megaraid_shutdown(adapter);
4969}
4970
4971static struct pci_device_id megaraid_pci_tbl[] = {
1da177e4
LT		 4972 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4973 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4974 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4975 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 4976 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4977 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 4978 {0,}
4979};
4980MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4981
4982static struct pci_driver megaraid_pci_driver = {
3542adcb 4983 .name = "megaraid_legacy",
1da177e4
LT		 4984 .id_table = megaraid_pci_tbl,
4985 .probe = megaraid_probe_one,
4986 .remove = __devexit_p(megaraid_remove_one),
d18c3db5 4987 .shutdown = megaraid_shutdown,
1da177e4
LT		 4988};
4989
4990static int __init megaraid_init(void)
4991{
4992 int error;
4993
4994 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4995 max_cmd_per_lun = MAX_CMD_PER_LUN;
4996 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4997 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4998
4999#ifdef CONFIG_PROC_FS
c74c120a 5000 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
1da177e4
LT		 5001 if (!mega_proc_dir_entry) {
5002 printk(KERN_WARNING
5003 "megaraid: failed to create megaraid root\n");
5004 }
5005#endif
4520b008 5006 error = pci_register_driver(&megaraid_pci_driver);
1da177e4
LT		 5007 if (error) {
5008#ifdef CONFIG_PROC_FS
c74c120a 5009 remove_proc_entry("megaraid", NULL);
1da177e4
LT		 5010#endif
5011 return error;
5012 }
5013
5014 /*
5015 * Register the driver as a character device, for applications
5016 * to access it for ioctls.
5017 * First argument (major) to register_chrdev implies a dynamic
5018 * major number allocation.
5019 */
3492b328 5020 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
1da177e4
LT		 5021 if (!major) {
5022 printk(KERN_WARNING
5023 "megaraid: failed to register char device\n");
5024 }
5025
5026 return 0;
5027}
5028
5029static void __exit megaraid_exit(void)
5030{
5031 /*
5032 * Unregister the character device interface to the driver.
5033 */
3492b328 5034 unregister_chrdev(major, "megadev_legacy");
1da177e4
LT		 5035
5036 pci_unregister_driver(&megaraid_pci_driver);
5037
5038#ifdef CONFIG_PROC_FS
c74c120a 5039 remove_proc_entry("megaraid", NULL);
1da177e4
LT		 5040#endif
5041}
5042
5043module_init(megaraid_init);
5044module_exit(megaraid_exit);
5045
5046/* vi: set ts=8 sw=8 tw=78: */
Linux 6.x block layer and io_uring tree(s)