1/*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <linux/uaccess.h>
38#include <asm/io.h>
39#include <linux/completion.h>
40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/seq_file.h>
43#include <linux/reboot.h>
44#include <linux/module.h>
45#include <linux/list.h>
46#include <linux/interrupt.h>
47#include <linux/pci.h>
48#include <linux/init.h>
49#include <linux/dma-mapping.h>
50#include <linux/mutex.h>
51#include <linux/slab.h>
52#include <scsi/scsicam.h>
53
54#include "scsi.h"
55#include <scsi/scsi_host.h>
56
57#include "megaraid.h"
58
59#define MEGARAID_MODULE_VERSION "2.00.4"
60
61MODULE_AUTHOR ("sju@lsil.com");
62MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
63MODULE_LICENSE ("GPL");
64MODULE_VERSION(MEGARAID_MODULE_VERSION);
65
66static DEFINE_MUTEX(megadev_mutex);
67static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
68module_param(max_cmd_per_lun, uint, 0);
69MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
70
71static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
72module_param(max_sectors_per_io, ushort, 0);
73MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
74
75
76static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
77module_param(max_mbox_busy_wait, ushort, 0);
78MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
79
80#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
81#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
82#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
83#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
84
85/*
86 * Global variables
87 */
88
89static int hba_count;
90static adapter_t *hba_soft_state[MAX_CONTROLLERS];
91static struct proc_dir_entry *mega_proc_dir_entry;
92
93/* For controller re-ordering */
94static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
95
96static long
97megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
98
99/*
100 * The File Operations structure for the serial/ioctl interface of the driver
101 */
102static const struct file_operations megadev_fops = {
103 .owner = THIS_MODULE,
104 .unlocked_ioctl = megadev_unlocked_ioctl,
105 .open = megadev_open,
106 .llseek = noop_llseek,
107};
108
109/*
110 * Array to structures for storing the information about the controllers. This
111 * information is sent to the user level applications, when they do an ioctl
112 * for this information.
113 */
114static struct mcontroller mcontroller[MAX_CONTROLLERS];
115
116/* The current driver version */
117static u32 driver_ver = 0x02000000;
118
119/* major number used by the device for character interface */
120static int major;
121
122#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
123
124
125/*
126 * Debug variable to print some diagnostic messages
127 */
128static int trace_level;
129
130/**
131 * mega_setup_mailbox()
132 * @adapter - pointer to our soft state
133 *
134 * Allocates a 8 byte aligned memory for the handshake mailbox.
135 */
136static int
137mega_setup_mailbox(adapter_t *adapter)
138{
139 unsigned long align;
140
141 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
142 sizeof(mbox64_t), &adapter->una_mbox64_dma);
143
144 if( !adapter->una_mbox64 ) return -1;
145
146 adapter->mbox = &adapter->una_mbox64->mbox;
147
148 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
149 (~0UL ^ 0xFUL));
150
151 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
152
153 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
154
155 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
156
157 /*
158 * Register the mailbox if the controller is an io-mapped controller
159 */
160 if( adapter->flag & BOARD_IOMAP ) {
161
162 outb(adapter->mbox_dma & 0xFF,
163 adapter->host->io_port + MBOX_PORT0);
164
165 outb((adapter->mbox_dma >> 8) & 0xFF,
166 adapter->host->io_port + MBOX_PORT1);
167
168 outb((adapter->mbox_dma >> 16) & 0xFF,
169 adapter->host->io_port + MBOX_PORT2);
170
171 outb((adapter->mbox_dma >> 24) & 0xFF,
172 adapter->host->io_port + MBOX_PORT3);
173
174 outb(ENABLE_MBOX_BYTE,
175 adapter->host->io_port + ENABLE_MBOX_REGION);
176
177 irq_ack(adapter);
178
179 irq_enable(adapter);
180 }
181
182 return 0;
183}
184
185
186/*
187 * mega_query_adapter()
188 * @adapter - pointer to our soft state
189 *
190 * Issue the adapter inquiry commands to the controller and find out
191 * information and parameter about the devices attached
192 */
193static int
194mega_query_adapter(adapter_t *adapter)
195{
196 dma_addr_t prod_info_dma_handle;
197 mega_inquiry3 *inquiry3;
198 u8 raw_mbox[sizeof(struct mbox_out)];
199 mbox_t *mbox;
200 int retval;
201
202 /* Initialize adapter inquiry mailbox */
203
204 mbox = (mbox_t *)raw_mbox;
205
206 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
207 memset(&mbox->m_out, 0, sizeof(raw_mbox));
208
209 /*
210 * Try to issue Inquiry3 command
211 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
212 * update enquiry3 structure
213 */
214 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
215
216 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
217
218 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
219 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
220 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
221
222 /* Issue a blocking command to the card */
223 if ((retval = issue_scb_block(adapter, raw_mbox))) {
224 /* the adapter does not support 40ld */
225
226 mraid_ext_inquiry *ext_inq;
227 mraid_inquiry *inq;
228 dma_addr_t dma_handle;
229
230 ext_inq = pci_alloc_consistent(adapter->dev,
231 sizeof(mraid_ext_inquiry), &dma_handle);
232
233 if( ext_inq == NULL ) return -1;
234
235 inq = &ext_inq->raid_inq;
236
237 mbox->m_out.xferaddr = (u32)dma_handle;
238
239 /*issue old 0x04 command to adapter */
240 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
241
242 issue_scb_block(adapter, raw_mbox);
243
244 /*
245 * update Enquiry3 and ProductInfo structures with
246 * mraid_inquiry structure
247 */
248 mega_8_to_40ld(inq, inquiry3,
249 (mega_product_info *)&adapter->product_info);
250
251 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
252 ext_inq, dma_handle);
253
254 } else { /*adapter supports 40ld */
255 adapter->flag |= BOARD_40LD;
256
257 /*
258 * get product_info, which is static information and will be
259 * unchanged
260 */
261 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
262 &adapter->product_info,
263 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
264
265 mbox->m_out.xferaddr = prod_info_dma_handle;
266
267 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
268 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
269
270 if ((retval = issue_scb_block(adapter, raw_mbox)))
271 dev_warn(&adapter->dev->dev,
272 "Product_info cmd failed with error: %d\n",
273 retval);
274
275 pci_unmap_single(adapter->dev, prod_info_dma_handle,
276 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
277 }
278
279
280 /*
281 * kernel scans the channels from 0 to <= max_channel
282 */
283 adapter->host->max_channel =
284 adapter->product_info.nchannels + NVIRT_CHAN -1;
285
286 adapter->host->max_id = 16; /* max targets per channel */
287
288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
289
290 adapter->host->cmd_per_lun = max_cmd_per_lun;
291
292 adapter->numldrv = inquiry3->num_ldrv;
293
294 adapter->max_cmds = adapter->product_info.max_commands;
295
296 if(adapter->max_cmds > MAX_COMMANDS)
297 adapter->max_cmds = MAX_COMMANDS;
298
299 adapter->host->can_queue = adapter->max_cmds - 1;
300
301 /*
302 * Get the maximum number of scatter-gather elements supported by this
303 * firmware
304 */
305 mega_get_max_sgl(adapter);
306
307 adapter->host->sg_tablesize = adapter->sglen;
308
309 /* use HP firmware and bios version encoding
310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted
311 right 8 bits making them zero. This 0 value was hardcoded to fix
312 sparse warnings. */
313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
314 snprintf(adapter->fw_version, sizeof(adapter->fw_version),
315 "%c%d%d.%d%d",
316 adapter->product_info.fw_version[2],
317 0,
318 adapter->product_info.fw_version[1] & 0x0f,
319 0,
320 adapter->product_info.fw_version[0] & 0x0f);
321 snprintf(adapter->bios_version, sizeof(adapter->fw_version),
322 "%c%d%d.%d%d",
323 adapter->product_info.bios_version[2],
324 0,
325 adapter->product_info.bios_version[1] & 0x0f,
326 0,
327 adapter->product_info.bios_version[0] & 0x0f);
328 } else {
329 memcpy(adapter->fw_version,
330 (char *)adapter->product_info.fw_version, 4);
331 adapter->fw_version[4] = 0;
332
333 memcpy(adapter->bios_version,
334 (char *)adapter->product_info.bios_version, 4);
335
336 adapter->bios_version[4] = 0;
337 }
338
339 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
340 adapter->fw_version, adapter->bios_version, adapter->numldrv);
341
342 /*
343 * Do we support extended (>10 bytes) cdbs
344 */
345 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
346 if (adapter->support_ext_cdb)
347 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
348
349
350 return 0;
351}
352
353/**
354 * mega_runpendq()
355 * @adapter - pointer to our soft state
356 *
357 * Runs through the list of pending requests.
358 */
359static inline void
360mega_runpendq(adapter_t *adapter)
361{
362 if(!list_empty(&adapter->pending_list))
363 __mega_runpendq(adapter);
364}
365
366/*
367 * megaraid_queue()
368 * @scmd - Issue this scsi command
369 * @done - the callback hook into the scsi mid-layer
370 *
371 * The command queuing entry point for the mid-layer.
372 */
373static int
374megaraid_queue_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
375{
376 adapter_t *adapter;
377 scb_t *scb;
378 int busy=0;
379 unsigned long flags;
380
381 adapter = (adapter_t *)scmd->device->host->hostdata;
382
383 scmd->scsi_done = done;
384
385
386 /*
387 * Allocate and build a SCB request
388 * busy flag will be set if mega_build_cmd() command could not
389 * allocate scb. We will return non-zero status in that case.
390 * NOTE: scb can be null even though certain commands completed
391 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
392 * return 0 in that case.
393 */
394
395 spin_lock_irqsave(&adapter->lock, flags);
396 scb = mega_build_cmd(adapter, scmd, &busy);
397 if (!scb)
398 goto out;
399
400 scb->state |= SCB_PENDQ;
401 list_add_tail(&scb->list, &adapter->pending_list);
402
403 /*
404 * Check if the HBA is in quiescent state, e.g., during a
405 * delete logical drive opertion. If it is, don't run
406 * the pending_list.
407 */
408 if (atomic_read(&adapter->quiescent) == 0)
409 mega_runpendq(adapter);
410
411 busy = 0;
412 out:
413 spin_unlock_irqrestore(&adapter->lock, flags);
414 return busy;
415}
416
417static DEF_SCSI_QCMD(megaraid_queue)
418
419/**
420 * mega_allocate_scb()
421 * @adapter - pointer to our soft state
422 * @cmd - scsi command from the mid-layer
423 *
424 * Allocate a SCB structure. This is the central structure for controller
425 * commands.
426 */
427static inline scb_t *
428mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd)
429{
430 struct list_head *head = &adapter->free_list;
431 scb_t *scb;
432
433 /* Unlink command from Free List */
434 if( !list_empty(head) ) {
435
436 scb = list_entry(head->next, scb_t, list);
437
438 list_del_init(head->next);
439
440 scb->state = SCB_ACTIVE;
441 scb->cmd = cmd;
442 scb->dma_type = MEGA_DMA_TYPE_NONE;
443
444 return scb;
445 }
446
447 return NULL;
448}
449
450/**
451 * mega_get_ldrv_num()
452 * @adapter - pointer to our soft state
453 * @cmd - scsi mid layer command
454 * @channel - channel on the controller
455 *
456 * Calculate the logical drive number based on the information in scsi command
457 * and the channel number.
458 */
459static inline int
460mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel)
461{
462 int tgt;
463 int ldrv_num;
464
465 tgt = cmd->device->id;
466
467 if ( tgt > adapter->this_id )
468 tgt--; /* we do not get inquires for initiator id */
469
470 ldrv_num = (channel * 15) + tgt;
471
472
473 /*
474 * If we have a logical drive with boot enabled, project it first
475 */
476 if( adapter->boot_ldrv_enabled ) {
477 if( ldrv_num == 0 ) {
478 ldrv_num = adapter->boot_ldrv;
479 }
480 else {
481 if( ldrv_num <= adapter->boot_ldrv ) {
482 ldrv_num--;
483 }
484 }
485 }
486
487 /*
488 * If "delete logical drive" feature is enabled on this controller.
489 * Do only if at least one delete logical drive operation was done.
490 *
491 * Also, after logical drive deletion, instead of logical drive number,
492 * the value returned should be 0x80+logical drive id.
493 *
494 * These is valid only for IO commands.
495 */
496
497 if (adapter->support_random_del && adapter->read_ldidmap )
498 switch (cmd->cmnd[0]) {
499 case READ_6: /* fall through */
500 case WRITE_6: /* fall through */
501 case READ_10: /* fall through */
502 case WRITE_10:
503 ldrv_num += 0x80;
504 }
505
506 return ldrv_num;
507}
508
509/**
510 * mega_build_cmd()
511 * @adapter - pointer to our soft state
512 * @cmd - Prepare using this scsi command
513 * @busy - busy flag if no resources
514 *
515 * Prepares a command and scatter gather list for the controller. This routine
516 * also finds out if the commands is intended for a logical drive or a
517 * physical device and prepares the controller command accordingly.
518 *
519 * We also re-order the logical drives and physical devices based on their
520 * boot settings.
521 */
522static scb_t *
523mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy)
524{
525 mega_ext_passthru *epthru;
526 mega_passthru *pthru;
527 scb_t *scb;
528 mbox_t *mbox;
529 u32 seg;
530 char islogical;
531 int max_ldrv_num;
532 int channel = 0;
533 int target = 0;
534 int ldrv_num = 0; /* logical drive number */
535
536 /*
537 * We know what channels our logical drives are on - mega_find_card()
538 */
539 islogical = adapter->logdrv_chan[cmd->device->channel];
540
541 /*
542 * The theory: If physical drive is chosen for boot, all the physical
543 * devices are exported before the logical drives, otherwise physical
544 * devices are pushed after logical drives, in which case - Kernel sees
545 * the physical devices on virtual channel which is obviously converted
546 * to actual channel on the HBA.
547 */
548 if( adapter->boot_pdrv_enabled ) {
549 if( islogical ) {
550 /* logical channel */
551 channel = cmd->device->channel -
552 adapter->product_info.nchannels;
553 }
554 else {
555 /* this is physical channel */
556 channel = cmd->device->channel;
557 target = cmd->device->id;
558
559 /*
560 * boot from a physical disk, that disk needs to be
561 * exposed first IF both the channels are SCSI, then
562 * booting from the second channel is not allowed.
563 */
564 if( target == 0 ) {
565 target = adapter->boot_pdrv_tgt;
566 }
567 else if( target == adapter->boot_pdrv_tgt ) {
568 target = 0;
569 }
570 }
571 }
572 else {
573 if( islogical ) {
574 /* this is the logical channel */
575 channel = cmd->device->channel;
576 }
577 else {
578 /* physical channel */
579 channel = cmd->device->channel - NVIRT_CHAN;
580 target = cmd->device->id;
581 }
582 }
583
584
585 if(islogical) {
586
587 /* have just LUN 0 for each target on virtual channels */
588 if (cmd->device->lun) {
589 cmd->result = (DID_BAD_TARGET << 16);
590 cmd->scsi_done(cmd);
591 return NULL;
592 }
593
594 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
595
596
597 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
598 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
599
600 /*
601 * max_ldrv_num increases by 0x80 if some logical drive was
602 * deleted.
603 */
604 if(adapter->read_ldidmap)
605 max_ldrv_num += 0x80;
606
607 if(ldrv_num > max_ldrv_num ) {
608 cmd->result = (DID_BAD_TARGET << 16);
609 cmd->scsi_done(cmd);
610 return NULL;
611 }
612
613 }
614 else {
615 if( cmd->device->lun > 7) {
616 /*
617 * Do not support lun >7 for physically accessed
618 * devices
619 */
620 cmd->result = (DID_BAD_TARGET << 16);
621 cmd->scsi_done(cmd);
622 return NULL;
623 }
624 }
625
626 /*
627 *
628 * Logical drive commands
629 *
630 */
631 if(islogical) {
632 switch (cmd->cmnd[0]) {
633 case TEST_UNIT_READY:
634#if MEGA_HAVE_CLUSTERING
635 /*
636 * Do we support clustering and is the support enabled
637 * If no, return success always
638 */
639 if( !adapter->has_cluster ) {
640 cmd->result = (DID_OK << 16);
641 cmd->scsi_done(cmd);
642 return NULL;
643 }
644
645 if(!(scb = mega_allocate_scb(adapter, cmd))) {
646 *busy = 1;
647 return NULL;
648 }
649
650 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
651 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
652 scb->raw_mbox[3] = ldrv_num;
653
654 scb->dma_direction = PCI_DMA_NONE;
655
656 return scb;
657#else
658 cmd->result = (DID_OK << 16);
659 cmd->scsi_done(cmd);
660 return NULL;
661#endif
662
663 case MODE_SENSE: {
664 char *buf;
665 struct scatterlist *sg;
666
667 sg = scsi_sglist(cmd);
668 buf = kmap_atomic(sg_page(sg)) + sg->offset;
669
670 memset(buf, 0, cmd->cmnd[4]);
671 kunmap_atomic(buf - sg->offset);
672
673 cmd->result = (DID_OK << 16);
674 cmd->scsi_done(cmd);
675 return NULL;
676 }
677
678 case READ_CAPACITY:
679 case INQUIRY:
680
681 if(!(adapter->flag & (1L << cmd->device->channel))) {
682
683 dev_notice(&adapter->dev->dev,
684 "scsi%d: scanning scsi channel %d "
685 "for logical drives\n",
686 adapter->host->host_no,
687 cmd->device->channel);
688
689 adapter->flag |= (1L << cmd->device->channel);
690 }
691
692 /* Allocate a SCB and initialize passthru */
693 if(!(scb = mega_allocate_scb(adapter, cmd))) {
694 *busy = 1;
695 return NULL;
696 }
697 pthru = scb->pthru;
698
699 mbox = (mbox_t *)scb->raw_mbox;
700 memset(mbox, 0, sizeof(scb->raw_mbox));
701 memset(pthru, 0, sizeof(mega_passthru));
702
703 pthru->timeout = 0;
704 pthru->ars = 1;
705 pthru->reqsenselen = 14;
706 pthru->islogical = 1;
707 pthru->logdrv = ldrv_num;
708 pthru->cdblen = cmd->cmd_len;
709 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
710
711 if( adapter->has_64bit_addr ) {
712 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
713 }
714 else {
715 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
716 }
717
718 scb->dma_direction = PCI_DMA_FROMDEVICE;
719
720 pthru->numsgelements = mega_build_sglist(adapter, scb,
721 &pthru->dataxferaddr, &pthru->dataxferlen);
722
723 mbox->m_out.xferaddr = scb->pthru_dma_addr;
724
725 return scb;
726
727 case READ_6:
728 case WRITE_6:
729 case READ_10:
730 case WRITE_10:
731 case READ_12:
732 case WRITE_12:
733
734 /* Allocate a SCB and initialize mailbox */
735 if(!(scb = mega_allocate_scb(adapter, cmd))) {
736 *busy = 1;
737 return NULL;
738 }
739 mbox = (mbox_t *)scb->raw_mbox;
740
741 memset(mbox, 0, sizeof(scb->raw_mbox));
742 mbox->m_out.logdrv = ldrv_num;
743
744 /*
745 * A little hack: 2nd bit is zero for all scsi read
746 * commands and is set for all scsi write commands
747 */
748 if( adapter->has_64bit_addr ) {
749 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
750 MEGA_MBOXCMD_LWRITE64:
751 MEGA_MBOXCMD_LREAD64 ;
752 }
753 else {
754 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
755 MEGA_MBOXCMD_LWRITE:
756 MEGA_MBOXCMD_LREAD ;
757 }
758
759 /*
760 * 6-byte READ(0x08) or WRITE(0x0A) cdb
761 */
762 if( cmd->cmd_len == 6 ) {
763 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
764 mbox->m_out.lba =
765 ((u32)cmd->cmnd[1] << 16) |
766 ((u32)cmd->cmnd[2] << 8) |
767 (u32)cmd->cmnd[3];
768
769 mbox->m_out.lba &= 0x1FFFFF;
770
771#if MEGA_HAVE_STATS
772 /*
773 * Take modulo 0x80, since the logical drive
774 * number increases by 0x80 when a logical
775 * drive was deleted
776 */
777 if (*cmd->cmnd == READ_6) {
778 adapter->nreads[ldrv_num%0x80]++;
779 adapter->nreadblocks[ldrv_num%0x80] +=
780 mbox->m_out.numsectors;
781 } else {
782 adapter->nwrites[ldrv_num%0x80]++;
783 adapter->nwriteblocks[ldrv_num%0x80] +=
784 mbox->m_out.numsectors;
785 }
786#endif
787 }
788
789 /*
790 * 10-byte READ(0x28) or WRITE(0x2A) cdb
791 */
792 if( cmd->cmd_len == 10 ) {
793 mbox->m_out.numsectors =
794 (u32)cmd->cmnd[8] |
795 ((u32)cmd->cmnd[7] << 8);
796 mbox->m_out.lba =
797 ((u32)cmd->cmnd[2] << 24) |
798 ((u32)cmd->cmnd[3] << 16) |
799 ((u32)cmd->cmnd[4] << 8) |
800 (u32)cmd->cmnd[5];
801
802#if MEGA_HAVE_STATS
803 if (*cmd->cmnd == READ_10) {
804 adapter->nreads[ldrv_num%0x80]++;
805 adapter->nreadblocks[ldrv_num%0x80] +=
806 mbox->m_out.numsectors;
807 } else {
808 adapter->nwrites[ldrv_num%0x80]++;
809 adapter->nwriteblocks[ldrv_num%0x80] +=
810 mbox->m_out.numsectors;
811 }
812#endif
813 }
814
815 /*
816 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
817 */
818 if( cmd->cmd_len == 12 ) {
819 mbox->m_out.lba =
820 ((u32)cmd->cmnd[2] << 24) |
821 ((u32)cmd->cmnd[3] << 16) |
822 ((u32)cmd->cmnd[4] << 8) |
823 (u32)cmd->cmnd[5];
824
825 mbox->m_out.numsectors =
826 ((u32)cmd->cmnd[6] << 24) |
827 ((u32)cmd->cmnd[7] << 16) |
828 ((u32)cmd->cmnd[8] << 8) |
829 (u32)cmd->cmnd[9];
830
831#if MEGA_HAVE_STATS
832 if (*cmd->cmnd == READ_12) {
833 adapter->nreads[ldrv_num%0x80]++;
834 adapter->nreadblocks[ldrv_num%0x80] +=
835 mbox->m_out.numsectors;
836 } else {
837 adapter->nwrites[ldrv_num%0x80]++;
838 adapter->nwriteblocks[ldrv_num%0x80] +=
839 mbox->m_out.numsectors;
840 }
841#endif
842 }
843
844 /*
845 * If it is a read command
846 */
847 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
848 scb->dma_direction = PCI_DMA_FROMDEVICE;
849 }
850 else {
851 scb->dma_direction = PCI_DMA_TODEVICE;
852 }
853
854 /* Calculate Scatter-Gather info */
855 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
856 (u32 *)&mbox->m_out.xferaddr, &seg);
857
858 return scb;
859
860#if MEGA_HAVE_CLUSTERING
861 case RESERVE: /* Fall through */
862 case RELEASE:
863
864 /*
865 * Do we support clustering and is the support enabled
866 */
867 if( ! adapter->has_cluster ) {
868
869 cmd->result = (DID_BAD_TARGET << 16);
870 cmd->scsi_done(cmd);
871 return NULL;
872 }
873
874 /* Allocate a SCB and initialize mailbox */
875 if(!(scb = mega_allocate_scb(adapter, cmd))) {
876 *busy = 1;
877 return NULL;
878 }
879
880 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
881 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
882 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
883
884 scb->raw_mbox[3] = ldrv_num;
885
886 scb->dma_direction = PCI_DMA_NONE;
887
888 return scb;
889#endif
890
891 default:
892 cmd->result = (DID_BAD_TARGET << 16);
893 cmd->scsi_done(cmd);
894 return NULL;
895 }
896 }
897
898 /*
899 * Passthru drive commands
900 */
901 else {
902 /* Allocate a SCB and initialize passthru */
903 if(!(scb = mega_allocate_scb(adapter, cmd))) {
904 *busy = 1;
905 return NULL;
906 }
907
908 mbox = (mbox_t *)scb->raw_mbox;
909 memset(mbox, 0, sizeof(scb->raw_mbox));
910
911 if( adapter->support_ext_cdb ) {
912
913 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
914 channel, target);
915
916 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
917
918 mbox->m_out.xferaddr = scb->epthru_dma_addr;
919
920 }
921 else {
922
923 pthru = mega_prepare_passthru(adapter, scb, cmd,
924 channel, target);
925
926 /* Initialize mailbox */
927 if( adapter->has_64bit_addr ) {
928 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
929 }
930 else {
931 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
932 }
933
934 mbox->m_out.xferaddr = scb->pthru_dma_addr;
935
936 }
937 return scb;
938 }
939 return NULL;
940}
941
942
943/**
944 * mega_prepare_passthru()
945 * @adapter - pointer to our soft state
946 * @scb - our scsi control block
947 * @cmd - scsi command from the mid-layer
948 * @channel - actual channel on the controller
949 * @target - actual id on the controller.
950 *
951 * prepare a command for the scsi physical devices.
952 */
953static mega_passthru *
954mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,
955 int channel, int target)
956{
957 mega_passthru *pthru;
958
959 pthru = scb->pthru;
960 memset(pthru, 0, sizeof (mega_passthru));
961
962 /* 0=6sec/1=60sec/2=10min/3=3hrs */
963 pthru->timeout = 2;
964
965 pthru->ars = 1;
966 pthru->reqsenselen = 14;
967 pthru->islogical = 0;
968
969 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
970
971 pthru->target = (adapter->flag & BOARD_40LD) ?
972 (channel << 4) | target : target;
973
974 pthru->cdblen = cmd->cmd_len;
975 pthru->logdrv = cmd->device->lun;
976
977 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
978
979 /* Not sure about the direction */
980 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
981
982 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
983 switch (cmd->cmnd[0]) {
984 case INQUIRY:
985 case READ_CAPACITY:
986 if(!(adapter->flag & (1L << cmd->device->channel))) {
987
988 dev_notice(&adapter->dev->dev,
989 "scsi%d: scanning scsi channel %d [P%d] "
990 "for physical devices\n",
991 adapter->host->host_no,
992 cmd->device->channel, channel);
993
994 adapter->flag |= (1L << cmd->device->channel);
995 }
996 /* Fall through */
997 default:
998 pthru->numsgelements = mega_build_sglist(adapter, scb,
999 &pthru->dataxferaddr, &pthru->dataxferlen);
1000 break;
1001 }
1002 return pthru;
1003}
1004
1005
1006/**
1007 * mega_prepare_extpassthru()
1008 * @adapter - pointer to our soft state
1009 * @scb - our scsi control block
1010 * @cmd - scsi command from the mid-layer
1011 * @channel - actual channel on the controller
1012 * @target - actual id on the controller.
1013 *
1014 * prepare a command for the scsi physical devices. This rountine prepares
1015 * commands for devices which can take extended CDBs (>10 bytes)
1016 */
1017static mega_ext_passthru *
1018mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,
1019 struct scsi_cmnd *cmd,
1020 int channel, int target)
1021{
1022 mega_ext_passthru *epthru;
1023
1024 epthru = scb->epthru;
1025 memset(epthru, 0, sizeof(mega_ext_passthru));
1026
1027 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1028 epthru->timeout = 2;
1029
1030 epthru->ars = 1;
1031 epthru->reqsenselen = 14;
1032 epthru->islogical = 0;
1033
1034 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1035 epthru->target = (adapter->flag & BOARD_40LD) ?
1036 (channel << 4) | target : target;
1037
1038 epthru->cdblen = cmd->cmd_len;
1039 epthru->logdrv = cmd->device->lun;
1040
1041 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1042
1043 /* Not sure about the direction */
1044 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1045
1046 switch(cmd->cmnd[0]) {
1047 case INQUIRY:
1048 case READ_CAPACITY:
1049 if(!(adapter->flag & (1L << cmd->device->channel))) {
1050
1051 dev_notice(&adapter->dev->dev,
1052 "scsi%d: scanning scsi channel %d [P%d] "
1053 "for physical devices\n",
1054 adapter->host->host_no,
1055 cmd->device->channel, channel);
1056
1057 adapter->flag |= (1L << cmd->device->channel);
1058 }
1059 /* Fall through */
1060 default:
1061 epthru->numsgelements = mega_build_sglist(adapter, scb,
1062 &epthru->dataxferaddr, &epthru->dataxferlen);
1063 break;
1064 }
1065
1066 return epthru;
1067}
1068
1069static void
1070__mega_runpendq(adapter_t *adapter)
1071{
1072 scb_t *scb;
1073 struct list_head *pos, *next;
1074
1075 /* Issue any pending commands to the card */
1076 list_for_each_safe(pos, next, &adapter->pending_list) {
1077
1078 scb = list_entry(pos, scb_t, list);
1079
1080 if( !(scb->state & SCB_ISSUED) ) {
1081
1082 if( issue_scb(adapter, scb) != 0 )
1083 return;
1084 }
1085 }
1086
1087 return;
1088}
1089
1090
1091/**
1092 * issue_scb()
1093 * @adapter - pointer to our soft state
1094 * @scb - scsi control block
1095 *
1096 * Post a command to the card if the mailbox is available, otherwise return
1097 * busy. We also take the scb from the pending list if the mailbox is
1098 * available.
1099 */
1100static int
1101issue_scb(adapter_t *adapter, scb_t *scb)
1102{
1103 volatile mbox64_t *mbox64 = adapter->mbox64;
1104 volatile mbox_t *mbox = adapter->mbox;
1105 unsigned int i = 0;
1106
1107 if(unlikely(mbox->m_in.busy)) {
1108 do {
1109 udelay(1);
1110 i++;
1111 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1112
1113 if(mbox->m_in.busy) return -1;
1114 }
1115
1116 /* Copy mailbox data into host structure */
1117 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1118 sizeof(struct mbox_out));
1119
1120 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1121 mbox->m_in.busy = 1; /* Set busy */
1122
1123
1124 /*
1125 * Increment the pending queue counter
1126 */
1127 atomic_inc(&adapter->pend_cmds);
1128
1129 switch (mbox->m_out.cmd) {
1130 case MEGA_MBOXCMD_LREAD64:
1131 case MEGA_MBOXCMD_LWRITE64:
1132 case MEGA_MBOXCMD_PASSTHRU64:
1133 case MEGA_MBOXCMD_EXTPTHRU:
1134 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1135 mbox64->xfer_segment_hi = 0;
1136 mbox->m_out.xferaddr = 0xFFFFFFFF;
1137 break;
1138 default:
1139 mbox64->xfer_segment_lo = 0;
1140 mbox64->xfer_segment_hi = 0;
1141 }
1142
1143 /*
1144 * post the command
1145 */
1146 scb->state |= SCB_ISSUED;
1147
1148 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1149 mbox->m_in.poll = 0;
1150 mbox->m_in.ack = 0;
1151 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1152 }
1153 else {
1154 irq_enable(adapter);
1155 issue_command(adapter);
1156 }
1157
1158 return 0;
1159}
1160
1161/*
1162 * Wait until the controller's mailbox is available
1163 */
1164static inline int
1165mega_busywait_mbox (adapter_t *adapter)
1166{
1167 if (adapter->mbox->m_in.busy)
1168 return __mega_busywait_mbox(adapter);
1169 return 0;
1170}
1171
1172/**
1173 * issue_scb_block()
1174 * @adapter - pointer to our soft state
1175 * @raw_mbox - the mailbox
1176 *
1177 * Issue a scb in synchronous and non-interrupt mode
1178 */
1179static int
1180issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1181{
1182 volatile mbox64_t *mbox64 = adapter->mbox64;
1183 volatile mbox_t *mbox = adapter->mbox;
1184 u8 byte;
1185
1186 /* Wait until mailbox is free */
1187 if(mega_busywait_mbox (adapter))
1188 goto bug_blocked_mailbox;
1189
1190 /* Copy mailbox data into host structure */
1191 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1192 mbox->m_out.cmdid = 0xFE;
1193 mbox->m_in.busy = 1;
1194
1195 switch (raw_mbox[0]) {
1196 case MEGA_MBOXCMD_LREAD64:
1197 case MEGA_MBOXCMD_LWRITE64:
1198 case MEGA_MBOXCMD_PASSTHRU64:
1199 case MEGA_MBOXCMD_EXTPTHRU:
1200 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1201 mbox64->xfer_segment_hi = 0;
1202 mbox->m_out.xferaddr = 0xFFFFFFFF;
1203 break;
1204 default:
1205 mbox64->xfer_segment_lo = 0;
1206 mbox64->xfer_segment_hi = 0;
1207 }
1208
1209 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1210 mbox->m_in.poll = 0;
1211 mbox->m_in.ack = 0;
1212 mbox->m_in.numstatus = 0xFF;
1213 mbox->m_in.status = 0xFF;
1214 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1215
1216 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1217 cpu_relax();
1218
1219 mbox->m_in.numstatus = 0xFF;
1220
1221 while( (volatile u8)mbox->m_in.poll != 0x77 )
1222 cpu_relax();
1223
1224 mbox->m_in.poll = 0;
1225 mbox->m_in.ack = 0x77;
1226
1227 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1228
1229 while(RDINDOOR(adapter) & 0x2)
1230 cpu_relax();
1231 }
1232 else {
1233 irq_disable(adapter);
1234 issue_command(adapter);
1235
1236 while (!((byte = irq_state(adapter)) & INTR_VALID))
1237 cpu_relax();
1238
1239 set_irq_state(adapter, byte);
1240 irq_enable(adapter);
1241 irq_ack(adapter);
1242 }
1243
1244 return mbox->m_in.status;
1245
1246bug_blocked_mailbox:
1247 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1248 udelay (1000);
1249 return -1;
1250}
1251
1252
1253/**
1254 * megaraid_isr_iomapped()
1255 * @irq - irq
1256 * @devp - pointer to our soft state
1257 *
1258 * Interrupt service routine for io-mapped controllers.
1259 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1260 * and service the completed commands.
1261 */
1262static irqreturn_t
1263megaraid_isr_iomapped(int irq, void *devp)
1264{
1265 adapter_t *adapter = devp;
1266 unsigned long flags;
1267 u8 status;
1268 u8 nstatus;
1269 u8 completed[MAX_FIRMWARE_STATUS];
1270 u8 byte;
1271 int handled = 0;
1272
1273
1274 /*
1275 * loop till F/W has more commands for us to complete.
1276 */
1277 spin_lock_irqsave(&adapter->lock, flags);
1278
1279 do {
1280 /* Check if a valid interrupt is pending */
1281 byte = irq_state(adapter);
1282 if( (byte & VALID_INTR_BYTE) == 0 ) {
1283 /*
1284 * No more pending commands
1285 */
1286 goto out_unlock;
1287 }
1288 set_irq_state(adapter, byte);
1289
1290 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1291 == 0xFF)
1292 cpu_relax();
1293 adapter->mbox->m_in.numstatus = 0xFF;
1294
1295 status = adapter->mbox->m_in.status;
1296
1297 /*
1298 * decrement the pending queue counter
1299 */
1300 atomic_sub(nstatus, &adapter->pend_cmds);
1301
1302 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1303 nstatus);
1304
1305 /* Acknowledge interrupt */
1306 irq_ack(adapter);
1307
1308 mega_cmd_done(adapter, completed, nstatus, status);
1309
1310 mega_rundoneq(adapter);
1311
1312 handled = 1;
1313
1314 /* Loop through any pending requests */
1315 if(atomic_read(&adapter->quiescent) == 0) {
1316 mega_runpendq(adapter);
1317 }
1318
1319 } while(1);
1320
1321 out_unlock:
1322
1323 spin_unlock_irqrestore(&adapter->lock, flags);
1324
1325 return IRQ_RETVAL(handled);
1326}
1327
1328
1329/**
1330 * megaraid_isr_memmapped()
1331 * @irq - irq
1332 * @devp - pointer to our soft state
1333 *
1334 * Interrupt service routine for memory-mapped controllers.
1335 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1336 * and service the completed commands.
1337 */
1338static irqreturn_t
1339megaraid_isr_memmapped(int irq, void *devp)
1340{
1341 adapter_t *adapter = devp;
1342 unsigned long flags;
1343 u8 status;
1344 u32 dword = 0;
1345 u8 nstatus;
1346 u8 completed[MAX_FIRMWARE_STATUS];
1347 int handled = 0;
1348
1349
1350 /*
1351 * loop till F/W has more commands for us to complete.
1352 */
1353 spin_lock_irqsave(&adapter->lock, flags);
1354
1355 do {
1356 /* Check if a valid interrupt is pending */
1357 dword = RDOUTDOOR(adapter);
1358 if(dword != 0x10001234) {
1359 /*
1360 * No more pending commands
1361 */
1362 goto out_unlock;
1363 }
1364 WROUTDOOR(adapter, 0x10001234);
1365
1366 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1367 == 0xFF) {
1368 cpu_relax();
1369 }
1370 adapter->mbox->m_in.numstatus = 0xFF;
1371
1372 status = adapter->mbox->m_in.status;
1373
1374 /*
1375 * decrement the pending queue counter
1376 */
1377 atomic_sub(nstatus, &adapter->pend_cmds);
1378
1379 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1380 nstatus);
1381
1382 /* Acknowledge interrupt */
1383 WRINDOOR(adapter, 0x2);
1384
1385 handled = 1;
1386
1387 while( RDINDOOR(adapter) & 0x02 )
1388 cpu_relax();
1389
1390 mega_cmd_done(adapter, completed, nstatus, status);
1391
1392 mega_rundoneq(adapter);
1393
1394 /* Loop through any pending requests */
1395 if(atomic_read(&adapter->quiescent) == 0) {
1396 mega_runpendq(adapter);
1397 }
1398
1399 } while(1);
1400
1401 out_unlock:
1402
1403 spin_unlock_irqrestore(&adapter->lock, flags);
1404
1405 return IRQ_RETVAL(handled);
1406}
1407/**
1408 * mega_cmd_done()
1409 * @adapter - pointer to our soft state
1410 * @completed - array of ids of completed commands
1411 * @nstatus - number of completed commands
1412 * @status - status of the last command completed
1413 *
1414 * Complete the commands and call the scsi mid-layer callback hooks.
1415 */
1416static void
1417mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1418{
1419 mega_ext_passthru *epthru = NULL;
1420 struct scatterlist *sgl;
1421 struct scsi_cmnd *cmd = NULL;
1422 mega_passthru *pthru = NULL;
1423 mbox_t *mbox = NULL;
1424 u8 c;
1425 scb_t *scb;
1426 int islogical;
1427 int cmdid;
1428 int i;
1429
1430 /*
1431 * for all the commands completed, call the mid-layer callback routine
1432 * and free the scb.
1433 */
1434 for( i = 0; i < nstatus; i++ ) {
1435
1436 cmdid = completed[i];
1437
1438 /*
1439 * Only free SCBs for the commands coming down from the
1440 * mid-layer, not for which were issued internally
1441 *
1442 * For internal command, restore the status returned by the
1443 * firmware so that user can interpret it.
1444 */
1445 if (cmdid == CMDID_INT_CMDS) {
1446 scb = &adapter->int_scb;
1447
1448 list_del_init(&scb->list);
1449 scb->state = SCB_FREE;
1450
1451 adapter->int_status = status;
1452 complete(&adapter->int_waitq);
1453 } else {
1454 scb = &adapter->scb_list[cmdid];
1455
1456 /*
1457 * Make sure f/w has completed a valid command
1458 */
1459 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1460 dev_crit(&adapter->dev->dev, "invalid command "
1461 "Id %d, scb->state:%x, scsi cmd:%p\n",
1462 cmdid, scb->state, scb->cmd);
1463
1464 continue;
1465 }
1466
1467 /*
1468 * Was a abort issued for this command
1469 */
1470 if( scb->state & SCB_ABORT ) {
1471
1472 dev_warn(&adapter->dev->dev,
1473 "aborted cmd [%x] complete\n",
1474 scb->idx);
1475
1476 scb->cmd->result = (DID_ABORT << 16);
1477
1478 list_add_tail(SCSI_LIST(scb->cmd),
1479 &adapter->completed_list);
1480
1481 mega_free_scb(adapter, scb);
1482
1483 continue;
1484 }
1485
1486 /*
1487 * Was a reset issued for this command
1488 */
1489 if( scb->state & SCB_RESET ) {
1490
1491 dev_warn(&adapter->dev->dev,
1492 "reset cmd [%x] complete\n",
1493 scb->idx);
1494
1495 scb->cmd->result = (DID_RESET << 16);
1496
1497 list_add_tail(SCSI_LIST(scb->cmd),
1498 &adapter->completed_list);
1499
1500 mega_free_scb (adapter, scb);
1501
1502 continue;
1503 }
1504
1505 cmd = scb->cmd;
1506 pthru = scb->pthru;
1507 epthru = scb->epthru;
1508 mbox = (mbox_t *)scb->raw_mbox;
1509
1510#if MEGA_HAVE_STATS
1511 {
1512
1513 int logdrv = mbox->m_out.logdrv;
1514
1515 islogical = adapter->logdrv_chan[cmd->channel];
1516 /*
1517 * Maintain an error counter for the logical drive.
1518 * Some application like SNMP agent need such
1519 * statistics
1520 */
1521 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1522 cmd->cmnd[0] == READ_10 ||
1523 cmd->cmnd[0] == READ_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->rd_errors[logdrv%0x80]++;
1529 }
1530
1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1532 cmd->cmnd[0] == WRITE_10 ||
1533 cmd->cmnd[0] == WRITE_12)) {
1534 /*
1535 * Logical drive number increases by 0x80 when
1536 * a logical drive is deleted
1537 */
1538 adapter->wr_errors[logdrv%0x80]++;
1539 }
1540
1541 }
1542#endif
1543 }
1544
1545 /*
1546 * Do not return the presence of hard disk on the channel so,
1547 * inquiry sent, and returned data==hard disk or removable
1548 * hard disk and not logical, request should return failure! -
1549 * PJ
1550 */
1551 islogical = adapter->logdrv_chan[cmd->device->channel];
1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1553
1554 sgl = scsi_sglist(cmd);
1555 if( sg_page(sgl) ) {
1556 c = *(unsigned char *) sg_virt(&sgl[0]);
1557 } else {
1558 dev_warn(&adapter->dev->dev, "invalid sg\n");
1559 c = 0;
1560 }
1561
1562 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1563 ((c & 0x1F ) == TYPE_DISK)) {
1564 status = 0xF0;
1565 }
1566 }
1567
1568 /* clear result; otherwise, success returns corrupt value */
1569 cmd->result = 0;
1570
1571 /* Convert MegaRAID status to Linux error code */
1572 switch (status) {
1573 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1574 cmd->result |= (DID_OK << 16);
1575 break;
1576
1577 case 0x02: /* ERROR_ABORTED, i.e.
1578 SCSI_STATUS_CHECK_CONDITION */
1579
1580 /* set sense_buffer and result fields */
1581 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1582 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1583
1584 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1585 14);
1586
1587 cmd->result = (DRIVER_SENSE << 24) |
1588 (DID_OK << 16) |
1589 (CHECK_CONDITION << 1);
1590 }
1591 else {
1592 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1593
1594 memcpy(cmd->sense_buffer,
1595 epthru->reqsensearea, 14);
1596
1597 cmd->result = (DRIVER_SENSE << 24) |
1598 (DID_OK << 16) |
1599 (CHECK_CONDITION << 1);
1600 } else {
1601 cmd->sense_buffer[0] = 0x70;
1602 cmd->sense_buffer[2] = ABORTED_COMMAND;
1603 cmd->result |= (CHECK_CONDITION << 1);
1604 }
1605 }
1606 break;
1607
1608 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1609 SCSI_STATUS_BUSY */
1610 cmd->result |= (DID_BUS_BUSY << 16) | status;
1611 break;
1612
1613 default:
1614#if MEGA_HAVE_CLUSTERING
1615 /*
1616 * If TEST_UNIT_READY fails, we know
1617 * MEGA_RESERVATION_STATUS failed
1618 */
1619 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1620 cmd->result |= (DID_ERROR << 16) |
1621 (RESERVATION_CONFLICT << 1);
1622 }
1623 else
1624 /*
1625 * Error code returned is 1 if Reserve or Release
1626 * failed or the input parameter is invalid
1627 */
1628 if( status == 1 &&
1629 (cmd->cmnd[0] == RESERVE ||
1630 cmd->cmnd[0] == RELEASE) ) {
1631
1632 cmd->result |= (DID_ERROR << 16) |
1633 (RESERVATION_CONFLICT << 1);
1634 }
1635 else
1636#endif
1637 cmd->result |= (DID_BAD_TARGET << 16)|status;
1638 }
1639
1640 mega_free_scb(adapter, scb);
1641
1642 /* Add Scsi_Command to end of completed queue */
1643 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1644 }
1645}
1646
1647
1648/*
1649 * mega_runpendq()
1650 *
1651 * Run through the list of completed requests and finish it
1652 */
1653static void
1654mega_rundoneq (adapter_t *adapter)
1655{
1656 struct scsi_cmnd *cmd;
1657 struct list_head *pos;
1658
1659 list_for_each(pos, &adapter->completed_list) {
1660
1661 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1662
1663 cmd = list_entry(spos, struct scsi_cmnd, SCp);
1664 cmd->scsi_done(cmd);
1665 }
1666
1667 INIT_LIST_HEAD(&adapter->completed_list);
1668}
1669
1670
1671/*
1672 * Free a SCB structure
1673 * Note: We assume the scsi commands associated with this scb is not free yet.
1674 */
1675static void
1676mega_free_scb(adapter_t *adapter, scb_t *scb)
1677{
1678 switch( scb->dma_type ) {
1679
1680 case MEGA_DMA_TYPE_NONE:
1681 break;
1682
1683 case MEGA_SGLIST:
1684 scsi_dma_unmap(scb->cmd);
1685 break;
1686 default:
1687 break;
1688 }
1689
1690 /*
1691 * Remove from the pending list
1692 */
1693 list_del_init(&scb->list);
1694
1695 /* Link the scb back into free list */
1696 scb->state = SCB_FREE;
1697 scb->cmd = NULL;
1698
1699 list_add(&scb->list, &adapter->free_list);
1700}
1701
1702
1703static int
1704__mega_busywait_mbox (adapter_t *adapter)
1705{
1706 volatile mbox_t *mbox = adapter->mbox;
1707 long counter;
1708
1709 for (counter = 0; counter < 10000; counter++) {
1710 if (!mbox->m_in.busy)
1711 return 0;
1712 udelay(100);
1713 cond_resched();
1714 }
1715 return -1; /* give up after 1 second */
1716}
1717
1718/*
1719 * Copies data to SGLIST
1720 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1721 */
1722static int
1723mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1724{
1725 struct scatterlist *sg;
1726 struct scsi_cmnd *cmd;
1727 int sgcnt;
1728 int idx;
1729
1730 cmd = scb->cmd;
1731
1732 /*
1733 * Copy Scatter-Gather list info into controller structure.
1734 *
1735 * The number of sg elements returned must not exceed our limit
1736 */
1737 sgcnt = scsi_dma_map(cmd);
1738
1739 scb->dma_type = MEGA_SGLIST;
1740
1741 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1742
1743 *len = 0;
1744
1745 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1746 sg = scsi_sglist(cmd);
1747 scb->dma_h_bulkdata = sg_dma_address(sg);
1748 *buf = (u32)scb->dma_h_bulkdata;
1749 *len = sg_dma_len(sg);
1750 return 0;
1751 }
1752
1753 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1754 if (adapter->has_64bit_addr) {
1755 scb->sgl64[idx].address = sg_dma_address(sg);
1756 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1757 } else {
1758 scb->sgl[idx].address = sg_dma_address(sg);
1759 *len += scb->sgl[idx].length = sg_dma_len(sg);
1760 }
1761 }
1762
1763 /* Reset pointer and length fields */
1764 *buf = scb->sgl_dma_addr;
1765
1766 /* Return count of SG requests */
1767 return sgcnt;
1768}
1769
1770
1771/*
1772 * mega_8_to_40ld()
1773 *
1774 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1775 * Enquiry3 structures for later use
1776 */
1777static void
1778mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1779 mega_product_info *product_info)
1780{
1781 int i;
1782
1783 product_info->max_commands = inquiry->adapter_info.max_commands;
1784 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1785 product_info->nchannels = inquiry->adapter_info.nchannels;
1786
1787 for (i = 0; i < 4; i++) {
1788 product_info->fw_version[i] =
1789 inquiry->adapter_info.fw_version[i];
1790
1791 product_info->bios_version[i] =
1792 inquiry->adapter_info.bios_version[i];
1793 }
1794 enquiry3->cache_flush_interval =
1795 inquiry->adapter_info.cache_flush_interval;
1796
1797 product_info->dram_size = inquiry->adapter_info.dram_size;
1798
1799 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1800
1801 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1802 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1803 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1804 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1805 }
1806
1807 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1808 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1809}
1810
1811static inline void
1812mega_free_sgl(adapter_t *adapter)
1813{
1814 scb_t *scb;
1815 int i;
1816
1817 for(i = 0; i < adapter->max_cmds; i++) {
1818
1819 scb = &adapter->scb_list[i];
1820
1821 if( scb->sgl64 ) {
1822 pci_free_consistent(adapter->dev,
1823 sizeof(mega_sgl64) * adapter->sglen,
1824 scb->sgl64,
1825 scb->sgl_dma_addr);
1826
1827 scb->sgl64 = NULL;
1828 }
1829
1830 if( scb->pthru ) {
1831 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1832 scb->pthru, scb->pthru_dma_addr);
1833
1834 scb->pthru = NULL;
1835 }
1836
1837 if( scb->epthru ) {
1838 pci_free_consistent(adapter->dev,
1839 sizeof(mega_ext_passthru),
1840 scb->epthru, scb->epthru_dma_addr);
1841
1842 scb->epthru = NULL;
1843 }
1844
1845 }
1846}
1847
1848
1849/*
1850 * Get information about the card/driver
1851 */
1852const char *
1853megaraid_info(struct Scsi_Host *host)
1854{
1855 static char buffer[512];
1856 adapter_t *adapter;
1857
1858 adapter = (adapter_t *)host->hostdata;
1859
1860 sprintf (buffer,
1861 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1862 adapter->fw_version, adapter->product_info.max_commands,
1863 adapter->host->max_id, adapter->host->max_channel,
1864 (u32)adapter->host->max_lun);
1865 return buffer;
1866}
1867
1868/*
1869 * Abort a previous SCSI request. Only commands on the pending list can be
1870 * aborted. All the commands issued to the F/W must complete.
1871 */
1872static int
1873megaraid_abort(struct scsi_cmnd *cmd)
1874{
1875 adapter_t *adapter;
1876 int rval;
1877
1878 adapter = (adapter_t *)cmd->device->host->hostdata;
1879
1880 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1881
1882 /*
1883 * This is required here to complete any completed requests
1884 * to be communicated over to the mid layer.
1885 */
1886 mega_rundoneq(adapter);
1887
1888 return rval;
1889}
1890
1891
1892static int
1893megaraid_reset(struct scsi_cmnd *cmd)
1894{
1895 adapter_t *adapter;
1896 megacmd_t mc;
1897 int rval;
1898
1899 adapter = (adapter_t *)cmd->device->host->hostdata;
1900
1901#if MEGA_HAVE_CLUSTERING
1902 mc.cmd = MEGA_CLUSTER_CMD;
1903 mc.opcode = MEGA_RESET_RESERVATIONS;
1904
1905 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1906 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1907 }
1908 else {
1909 dev_info(&adapter->dev->dev, "reservation reset\n");
1910 }
1911#endif
1912
1913 spin_lock_irq(&adapter->lock);
1914
1915 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1916
1917 /*
1918 * This is required here to complete any completed requests
1919 * to be communicated over to the mid layer.
1920 */
1921 mega_rundoneq(adapter);
1922 spin_unlock_irq(&adapter->lock);
1923
1924 return rval;
1925}
1926
1927/**
1928 * megaraid_abort_and_reset()
1929 * @adapter - megaraid soft state
1930 * @cmd - scsi command to be aborted or reset
1931 * @aor - abort or reset flag
1932 *
1933 * Try to locate the scsi command in the pending queue. If found and is not
1934 * issued to the controller, abort/reset it. Otherwise return failure
1935 */
1936static int
1937megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor)
1938{
1939 struct list_head *pos, *next;
1940 scb_t *scb;
1941
1942 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1943 (aor == SCB_ABORT)? "ABORTING":"RESET",
1944 cmd->cmnd[0], cmd->device->channel,
1945 cmd->device->id, (u32)cmd->device->lun);
1946
1947 if(list_empty(&adapter->pending_list))
1948 return FAILED;
1949
1950 list_for_each_safe(pos, next, &adapter->pending_list) {
1951
1952 scb = list_entry(pos, scb_t, list);
1953
1954 if (scb->cmd == cmd) { /* Found command */
1955
1956 scb->state |= aor;
1957
1958 /*
1959 * Check if this command has firmware ownership. If
1960 * yes, we cannot reset this command. Whenever f/w
1961 * completes this command, we will return appropriate
1962 * status from ISR.
1963 */
1964 if( scb->state & SCB_ISSUED ) {
1965
1966 dev_warn(&adapter->dev->dev,
1967 "%s[%x], fw owner\n",
1968 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1969 scb->idx);
1970
1971 return FAILED;
1972 }
1973 else {
1974
1975 /*
1976 * Not yet issued! Remove from the pending
1977 * list
1978 */
1979 dev_warn(&adapter->dev->dev,
1980 "%s-[%x], driver owner\n",
1981 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1982 scb->idx);
1983
1984 mega_free_scb(adapter, scb);
1985
1986 if( aor == SCB_ABORT ) {
1987 cmd->result = (DID_ABORT << 16);
1988 }
1989 else {
1990 cmd->result = (DID_RESET << 16);
1991 }
1992
1993 list_add_tail(SCSI_LIST(cmd),
1994 &adapter->completed_list);
1995
1996 return SUCCESS;
1997 }
1998 }
1999 }
2000
2001 return FAILED;
2002}
2003
2004static inline int
2005make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2006{
2007 *pdev = pci_alloc_dev(NULL);
2008
2009 if( *pdev == NULL ) return -1;
2010
2011 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2012
2013 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2014 kfree(*pdev);
2015 return -1;
2016 }
2017
2018 return 0;
2019}
2020
2021static inline void
2022free_local_pdev(struct pci_dev *pdev)
2023{
2024 kfree(pdev);
2025}
2026
2027/**
2028 * mega_allocate_inquiry()
2029 * @dma_handle - handle returned for dma address
2030 * @pdev - handle to pci device
2031 *
2032 * allocates memory for inquiry structure
2033 */
2034static inline void *
2035mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2036{
2037 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2038}
2039
2040
2041static inline void
2042mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2043{
2044 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2045}
2046
2047
2048#ifdef CONFIG_PROC_FS
2049/* Following code handles /proc fs */
2050
2051/**
2052 * proc_show_config()
2053 * @m - Synthetic file construction data
2054 * @v - File iterator
2055 *
2056 * Display configuration information about the controller.
2057 */
2058static int
2059proc_show_config(struct seq_file *m, void *v)
2060{
2061
2062 adapter_t *adapter = m->private;
2063
2064 seq_puts(m, MEGARAID_VERSION);
2065 if(adapter->product_info.product_name[0])
2066 seq_printf(m, "%s\n", adapter->product_info.product_name);
2067
2068 seq_puts(m, "Controller Type: ");
2069
2070 if( adapter->flag & BOARD_MEMMAP )
2071 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2072 else
2073 seq_puts(m, "418/428/434\n");
2074
2075 if(adapter->flag & BOARD_40LD)
2076 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2077
2078 if(adapter->flag & BOARD_64BIT)
2079 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2080 if( adapter->has_64bit_addr )
2081 seq_puts(m, "Controller using 64-bit memory addressing\n");
2082 else
2083 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2084
2085 seq_printf(m, "Base = %08lx, Irq = %d, ",
2086 adapter->base, adapter->host->irq);
2087
2088 seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2089 adapter->numldrv, adapter->product_info.nchannels);
2090
2091 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2092 adapter->fw_version, adapter->bios_version,
2093 adapter->product_info.dram_size);
2094
2095 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2096 adapter->product_info.max_commands, adapter->max_cmds);
2097
2098 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);
2099 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2100 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);
2101 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);
2102 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);
2103 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);
2104 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);
2105 seq_printf(m, "quiescent = %d\n",
2106 atomic_read(&adapter->quiescent));
2107 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);
2108
2109 seq_puts(m, "\nModule Parameters:\n");
2110 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);
2111 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2112 return 0;
2113}
2114
2115/**
2116 * proc_show_stat()
2117 * @m - Synthetic file construction data
2118 * @v - File iterator
2119 *
2120 * Display statistical information about the I/O activity.
2121 */
2122static int
2123proc_show_stat(struct seq_file *m, void *v)
2124{
2125 adapter_t *adapter = m->private;
2126#if MEGA_HAVE_STATS
2127 int i;
2128#endif
2129
2130 seq_puts(m, "Statistical Information for this controller\n");
2131 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2132#if MEGA_HAVE_STATS
2133 for(i = 0; i < adapter->numldrv; i++) {
2134 seq_printf(m, "Logical Drive %d:\n", i);
2135 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2136 adapter->nreads[i], adapter->nwrites[i]);
2137 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2138 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2139 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2140 adapter->rd_errors[i], adapter->wr_errors[i]);
2141 }
2142#else
2143 seq_puts(m, "IO and error counters not compiled in driver.\n");
2144#endif
2145 return 0;
2146}
2147
2148
2149/**
2150 * proc_show_mbox()
2151 * @m - Synthetic file construction data
2152 * @v - File iterator
2153 *
2154 * Display mailbox information for the last command issued. This information
2155 * is good for debugging.
2156 */
2157static int
2158proc_show_mbox(struct seq_file *m, void *v)
2159{
2160 adapter_t *adapter = m->private;
2161 volatile mbox_t *mbox = adapter->mbox;
2162
2163 seq_puts(m, "Contents of Mail Box Structure\n");
2164 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);
2165 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2166 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);
2167 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);
2168 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);
2169 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2170 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2171 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);
2172 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);
2173 return 0;
2174}
2175
2176
2177/**
2178 * proc_show_rebuild_rate()
2179 * @m - Synthetic file construction data
2180 * @v - File iterator
2181 *
2182 * Display current rebuild rate
2183 */
2184static int
2185proc_show_rebuild_rate(struct seq_file *m, void *v)
2186{
2187 adapter_t *adapter = m->private;
2188 dma_addr_t dma_handle;
2189 caddr_t inquiry;
2190 struct pci_dev *pdev;
2191
2192 if( make_local_pdev(adapter, &pdev) != 0 )
2193 return 0;
2194
2195 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2196 goto free_pdev;
2197
2198 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2199 seq_puts(m, "Adapter inquiry failed.\n");
2200 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2201 goto free_inquiry;
2202 }
2203
2204 if( adapter->flag & BOARD_40LD )
2205 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2206 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2207 else
2208 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2209 ((mraid_ext_inquiry *)
2210 inquiry)->raid_inq.adapter_info.rebuild_rate);
2211
2212free_inquiry:
2213 mega_free_inquiry(inquiry, dma_handle, pdev);
2214free_pdev:
2215 free_local_pdev(pdev);
2216 return 0;
2217}
2218
2219
2220/**
2221 * proc_show_battery()
2222 * @m - Synthetic file construction data
2223 * @v - File iterator
2224 *
2225 * Display information about the battery module on the controller.
2226 */
2227static int
2228proc_show_battery(struct seq_file *m, void *v)
2229{
2230 adapter_t *adapter = m->private;
2231 dma_addr_t dma_handle;
2232 caddr_t inquiry;
2233 struct pci_dev *pdev;
2234 u8 battery_status;
2235
2236 if( make_local_pdev(adapter, &pdev) != 0 )
2237 return 0;
2238
2239 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2240 goto free_pdev;
2241
2242 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2243 seq_puts(m, "Adapter inquiry failed.\n");
2244 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2245 goto free_inquiry;
2246 }
2247
2248 if( adapter->flag & BOARD_40LD ) {
2249 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2250 }
2251 else {
2252 battery_status = ((mraid_ext_inquiry *)inquiry)->
2253 raid_inq.adapter_info.battery_status;
2254 }
2255
2256 /*
2257 * Decode the battery status
2258 */
2259 seq_printf(m, "Battery Status:[%d]", battery_status);
2260
2261 if(battery_status == MEGA_BATT_CHARGE_DONE)
2262 seq_puts(m, " Charge Done");
2263
2264 if(battery_status & MEGA_BATT_MODULE_MISSING)
2265 seq_puts(m, " Module Missing");
2266
2267 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2268 seq_puts(m, " Low Voltage");
2269
2270 if(battery_status & MEGA_BATT_TEMP_HIGH)
2271 seq_puts(m, " Temperature High");
2272
2273 if(battery_status & MEGA_BATT_PACK_MISSING)
2274 seq_puts(m, " Pack Missing");
2275
2276 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2277 seq_puts(m, " Charge In-progress");
2278
2279 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2280 seq_puts(m, " Charge Fail");
2281
2282 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2283 seq_puts(m, " Cycles Exceeded");
2284
2285 seq_putc(m, '\n');
2286
2287free_inquiry:
2288 mega_free_inquiry(inquiry, dma_handle, pdev);
2289free_pdev:
2290 free_local_pdev(pdev);
2291 return 0;
2292}
2293
2294
2295/*
2296 * Display scsi inquiry
2297 */
2298static void
2299mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2300{
2301 int i;
2302
2303 seq_puts(m, " Vendor: ");
2304 seq_write(m, scsi_inq + 8, 8);
2305 seq_puts(m, " Model: ");
2306 seq_write(m, scsi_inq + 16, 16);
2307 seq_puts(m, " Rev: ");
2308 seq_write(m, scsi_inq + 32, 4);
2309 seq_putc(m, '\n');
2310
2311 i = scsi_inq[0] & 0x1f;
2312 seq_printf(m, " Type: %s ", scsi_device_type(i));
2313
2314 seq_printf(m, " ANSI SCSI revision: %02x",
2315 scsi_inq[2] & 0x07);
2316
2317 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2318 seq_puts(m, " CCS\n");
2319 else
2320 seq_putc(m, '\n');
2321}
2322
2323/**
2324 * proc_show_pdrv()
2325 * @m - Synthetic file construction data
2326 * @page - buffer to write the data in
2327 * @adapter - pointer to our soft state
2328 *
2329 * Display information about the physical drives.
2330 */
2331static int
2332proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2333{
2334 dma_addr_t dma_handle;
2335 char *scsi_inq;
2336 dma_addr_t scsi_inq_dma_handle;
2337 caddr_t inquiry;
2338 struct pci_dev *pdev;
2339 u8 *pdrv_state;
2340 u8 state;
2341 int tgt;
2342 int max_channels;
2343 int i;
2344
2345 if( make_local_pdev(adapter, &pdev) != 0 )
2346 return 0;
2347
2348 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2349 goto free_pdev;
2350
2351 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2352 seq_puts(m, "Adapter inquiry failed.\n");
2353 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2354 goto free_inquiry;
2355 }
2356
2357
2358 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2359 if( scsi_inq == NULL ) {
2360 seq_puts(m, "memory not available for scsi inq.\n");
2361 goto free_inquiry;
2362 }
2363
2364 if( adapter->flag & BOARD_40LD ) {
2365 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2366 }
2367 else {
2368 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2369 raid_inq.pdrv_info.pdrv_state;
2370 }
2371
2372 max_channels = adapter->product_info.nchannels;
2373
2374 if( channel >= max_channels ) {
2375 goto free_pci;
2376 }
2377
2378 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2379
2380 i = channel*16 + tgt;
2381
2382 state = *(pdrv_state + i);
2383 switch( state & 0x0F ) {
2384 case PDRV_ONLINE:
2385 seq_printf(m, "Channel:%2d Id:%2d State: Online",
2386 channel, tgt);
2387 break;
2388
2389 case PDRV_FAILED:
2390 seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2391 channel, tgt);
2392 break;
2393
2394 case PDRV_RBLD:
2395 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2396 channel, tgt);
2397 break;
2398
2399 case PDRV_HOTSPARE:
2400 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2401 channel, tgt);
2402 break;
2403
2404 default:
2405 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2406 channel, tgt);
2407 break;
2408 }
2409
2410 /*
2411 * This interface displays inquiries for disk drives
2412 * only. Inquries for logical drives and non-disk
2413 * devices are available through /proc/scsi/scsi
2414 */
2415 memset(scsi_inq, 0, 256);
2416 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2417 scsi_inq_dma_handle) ||
2418 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2419 continue;
2420 }
2421
2422 /*
2423 * Check for overflow. We print less than 240
2424 * characters for inquiry
2425 */
2426 seq_puts(m, ".\n");
2427 mega_print_inquiry(m, scsi_inq);
2428 }
2429
2430free_pci:
2431 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2432free_inquiry:
2433 mega_free_inquiry(inquiry, dma_handle, pdev);
2434free_pdev:
2435 free_local_pdev(pdev);
2436 return 0;
2437}
2438
2439/**
2440 * proc_show_pdrv_ch0()
2441 * @m - Synthetic file construction data
2442 * @v - File iterator
2443 *
2444 * Display information about the physical drives on physical channel 0.
2445 */
2446static int
2447proc_show_pdrv_ch0(struct seq_file *m, void *v)
2448{
2449 return proc_show_pdrv(m, m->private, 0);
2450}
2451
2452
2453/**
2454 * proc_show_pdrv_ch1()
2455 * @m - Synthetic file construction data
2456 * @v - File iterator
2457 *
2458 * Display information about the physical drives on physical channel 1.
2459 */
2460static int
2461proc_show_pdrv_ch1(struct seq_file *m, void *v)
2462{
2463 return proc_show_pdrv(m, m->private, 1);
2464}
2465
2466
2467/**
2468 * proc_show_pdrv_ch2()
2469 * @m - Synthetic file construction data
2470 * @v - File iterator
2471 *
2472 * Display information about the physical drives on physical channel 2.
2473 */
2474static int
2475proc_show_pdrv_ch2(struct seq_file *m, void *v)
2476{
2477 return proc_show_pdrv(m, m->private, 2);
2478}
2479
2480
2481/**
2482 * proc_show_pdrv_ch3()
2483 * @m - Synthetic file construction data
2484 * @v - File iterator
2485 *
2486 * Display information about the physical drives on physical channel 3.
2487 */
2488static int
2489proc_show_pdrv_ch3(struct seq_file *m, void *v)
2490{
2491 return proc_show_pdrv(m, m->private, 3);
2492}
2493
2494
2495/**
2496 * proc_show_rdrv()
2497 * @m - Synthetic file construction data
2498 * @adapter - pointer to our soft state
2499 * @start - starting logical drive to display
2500 * @end - ending logical drive to display
2501 *
2502 * We do not print the inquiry information since its already available through
2503 * /proc/scsi/scsi interface
2504 */
2505static int
2506proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2507{
2508 dma_addr_t dma_handle;
2509 logdrv_param *lparam;
2510 megacmd_t mc;
2511 char *disk_array;
2512 dma_addr_t disk_array_dma_handle;
2513 caddr_t inquiry;
2514 struct pci_dev *pdev;
2515 u8 *rdrv_state;
2516 int num_ldrv;
2517 u32 array_sz;
2518 int i;
2519
2520 if( make_local_pdev(adapter, &pdev) != 0 )
2521 return 0;
2522
2523 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2524 goto free_pdev;
2525
2526 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2527 seq_puts(m, "Adapter inquiry failed.\n");
2528 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2529 goto free_inquiry;
2530 }
2531
2532 memset(&mc, 0, sizeof(megacmd_t));
2533
2534 if( adapter->flag & BOARD_40LD ) {
2535 array_sz = sizeof(disk_array_40ld);
2536
2537 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2538
2539 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2540 }
2541 else {
2542 array_sz = sizeof(disk_array_8ld);
2543
2544 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2545 raid_inq.logdrv_info.ldrv_state;
2546
2547 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2548 raid_inq.logdrv_info.num_ldrv;
2549 }
2550
2551 disk_array = pci_alloc_consistent(pdev, array_sz,
2552 &disk_array_dma_handle);
2553
2554 if( disk_array == NULL ) {
2555 seq_puts(m, "memory not available.\n");
2556 goto free_inquiry;
2557 }
2558
2559 mc.xferaddr = (u32)disk_array_dma_handle;
2560
2561 if( adapter->flag & BOARD_40LD ) {
2562 mc.cmd = FC_NEW_CONFIG;
2563 mc.opcode = OP_DCMD_READ_CONFIG;
2564
2565 if( mega_internal_command(adapter, &mc, NULL) ) {
2566 seq_puts(m, "40LD read config failed.\n");
2567 goto free_pci;
2568 }
2569
2570 }
2571 else {
2572 mc.cmd = NEW_READ_CONFIG_8LD;
2573
2574 if( mega_internal_command(adapter, &mc, NULL) ) {
2575 mc.cmd = READ_CONFIG_8LD;
2576 if( mega_internal_command(adapter, &mc, NULL) ) {
2577 seq_puts(m, "8LD read config failed.\n");
2578 goto free_pci;
2579 }
2580 }
2581 }
2582
2583 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2584
2585 if( adapter->flag & BOARD_40LD ) {
2586 lparam =
2587 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2588 }
2589 else {
2590 lparam =
2591 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2592 }
2593
2594 /*
2595 * Check for overflow. We print less than 240 characters for
2596 * information about each logical drive.
2597 */
2598 seq_printf(m, "Logical drive:%2d:, ", i);
2599
2600 switch( rdrv_state[i] & 0x0F ) {
2601 case RDRV_OFFLINE:
2602 seq_puts(m, "state: offline");
2603 break;
2604 case RDRV_DEGRADED:
2605 seq_puts(m, "state: degraded");
2606 break;
2607 case RDRV_OPTIMAL:
2608 seq_puts(m, "state: optimal");
2609 break;
2610 case RDRV_DELETED:
2611 seq_puts(m, "state: deleted");
2612 break;
2613 default:
2614 seq_puts(m, "state: unknown");
2615 break;
2616 }
2617
2618 /*
2619 * Check if check consistency or initialization is going on
2620 * for this logical drive.
2621 */
2622 if( (rdrv_state[i] & 0xF0) == 0x20 )
2623 seq_puts(m, ", check-consistency in progress");
2624 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2625 seq_puts(m, ", initialization in progress");
2626
2627 seq_putc(m, '\n');
2628
2629 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2630 seq_printf(m, "RAID level:%3d, ", lparam->level);
2631 seq_printf(m, "Stripe size:%3d, ",
2632 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2633 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2634
2635 seq_puts(m, "Read Policy: ");
2636 switch(lparam->read_ahead) {
2637 case NO_READ_AHEAD:
2638 seq_puts(m, "No read ahead, ");
2639 break;
2640 case READ_AHEAD:
2641 seq_puts(m, "Read ahead, ");
2642 break;
2643 case ADAP_READ_AHEAD:
2644 seq_puts(m, "Adaptive, ");
2645 break;
2646
2647 }
2648
2649 seq_puts(m, "Write Policy: ");
2650 switch(lparam->write_mode) {
2651 case WRMODE_WRITE_THRU:
2652 seq_puts(m, "Write thru, ");
2653 break;
2654 case WRMODE_WRITE_BACK:
2655 seq_puts(m, "Write back, ");
2656 break;
2657 }
2658
2659 seq_puts(m, "Cache Policy: ");
2660 switch(lparam->direct_io) {
2661 case CACHED_IO:
2662 seq_puts(m, "Cached IO\n\n");
2663 break;
2664 case DIRECT_IO:
2665 seq_puts(m, "Direct IO\n\n");
2666 break;
2667 }
2668 }
2669
2670free_pci:
2671 pci_free_consistent(pdev, array_sz, disk_array,
2672 disk_array_dma_handle);
2673free_inquiry:
2674 mega_free_inquiry(inquiry, dma_handle, pdev);
2675free_pdev:
2676 free_local_pdev(pdev);
2677 return 0;
2678}
2679
2680/**
2681 * proc_show_rdrv_10()
2682 * @m - Synthetic file construction data
2683 * @v - File iterator
2684 *
2685 * Display real time information about the logical drives 0 through 9.
2686 */
2687static int
2688proc_show_rdrv_10(struct seq_file *m, void *v)
2689{
2690 return proc_show_rdrv(m, m->private, 0, 9);
2691}
2692
2693
2694/**
2695 * proc_show_rdrv_20()
2696 * @m - Synthetic file construction data
2697 * @v - File iterator
2698 *
2699 * Display real time information about the logical drives 0 through 9.
2700 */
2701static int
2702proc_show_rdrv_20(struct seq_file *m, void *v)
2703{
2704 return proc_show_rdrv(m, m->private, 10, 19);
2705}
2706
2707
2708/**
2709 * proc_show_rdrv_30()
2710 * @m - Synthetic file construction data
2711 * @v - File iterator
2712 *
2713 * Display real time information about the logical drives 0 through 9.
2714 */
2715static int
2716proc_show_rdrv_30(struct seq_file *m, void *v)
2717{
2718 return proc_show_rdrv(m, m->private, 20, 29);
2719}
2720
2721
2722/**
2723 * proc_show_rdrv_40()
2724 * @m - Synthetic file construction data
2725 * @v - File iterator
2726 *
2727 * Display real time information about the logical drives 0 through 9.
2728 */
2729static int
2730proc_show_rdrv_40(struct seq_file *m, void *v)
2731{
2732 return proc_show_rdrv(m, m->private, 30, 39);
2733}
2734
2735/**
2736 * mega_create_proc_entry()
2737 * @index - index in soft state array
2738 * @parent - parent node for this /proc entry
2739 *
2740 * Creates /proc entries for our controllers.
2741 */
2742static void
2743mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2744{
2745 adapter_t *adapter = hba_soft_state[index];
2746 struct proc_dir_entry *dir;
2747 u8 string[16];
2748
2749 sprintf(string, "hba%d", adapter->host->host_no);
2750 dir = proc_mkdir_data(string, 0, parent, adapter);
2751 if (!dir) {
2752 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2753 return;
2754 }
2755
2756 proc_create_single_data("config", S_IRUSR, dir,
2757 proc_show_config, adapter);
2758 proc_create_single_data("stat", S_IRUSR, dir,
2759 proc_show_stat, adapter);
2760 proc_create_single_data("mailbox", S_IRUSR, dir,
2761 proc_show_mbox, adapter);
2762#if MEGA_HAVE_ENH_PROC
2763 proc_create_single_data("rebuild-rate", S_IRUSR, dir,
2764 proc_show_rebuild_rate, adapter);
2765 proc_create_single_data("battery-status", S_IRUSR, dir,
2766 proc_show_battery, adapter);
2767 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir,
2768 proc_show_pdrv_ch0, adapter);
2769 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir,
2770 proc_show_pdrv_ch1, adapter);
2771 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir,
2772 proc_show_pdrv_ch2, adapter);
2773 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir,
2774 proc_show_pdrv_ch3, adapter);
2775 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir,
2776 proc_show_rdrv_10, adapter);
2777 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir,
2778 proc_show_rdrv_20, adapter);
2779 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir,
2780 proc_show_rdrv_30, adapter);
2781 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir,
2782 proc_show_rdrv_40, adapter);
2783#endif
2784}
2785
2786#else
2787static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2788{
2789}
2790#endif
2791
2792
2793/**
2794 * megaraid_biosparam()
2795 *
2796 * Return the disk geometry for a particular disk
2797 */
2798static int
2799megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2800 sector_t capacity, int geom[])
2801{
2802 adapter_t *adapter;
2803 unsigned char *bh;
2804 int heads;
2805 int sectors;
2806 int cylinders;
2807 int rval;
2808
2809 /* Get pointer to host config structure */
2810 adapter = (adapter_t *)sdev->host->hostdata;
2811
2812 if (IS_RAID_CH(adapter, sdev->channel)) {
2813 /* Default heads (64) & sectors (32) */
2814 heads = 64;
2815 sectors = 32;
2816 cylinders = (ulong)capacity / (heads * sectors);
2817
2818 /*
2819 * Handle extended translation size for logical drives
2820 * > 1Gb
2821 */
2822 if ((ulong)capacity >= 0x200000) {
2823 heads = 255;
2824 sectors = 63;
2825 cylinders = (ulong)capacity / (heads * sectors);
2826 }
2827
2828 /* return result */
2829 geom[0] = heads;
2830 geom[1] = sectors;
2831 geom[2] = cylinders;
2832 }
2833 else {
2834 bh = scsi_bios_ptable(bdev);
2835
2836 if( bh ) {
2837 rval = scsi_partsize(bh, capacity,
2838 &geom[2], &geom[0], &geom[1]);
2839 kfree(bh);
2840 if( rval != -1 )
2841 return rval;
2842 }
2843
2844 dev_info(&adapter->dev->dev,
2845 "invalid partition on this disk on channel %d\n",
2846 sdev->channel);
2847
2848 /* Default heads (64) & sectors (32) */
2849 heads = 64;
2850 sectors = 32;
2851 cylinders = (ulong)capacity / (heads * sectors);
2852
2853 /* Handle extended translation size for logical drives > 1Gb */
2854 if ((ulong)capacity >= 0x200000) {
2855 heads = 255;
2856 sectors = 63;
2857 cylinders = (ulong)capacity / (heads * sectors);
2858 }
2859
2860 /* return result */
2861 geom[0] = heads;
2862 geom[1] = sectors;
2863 geom[2] = cylinders;
2864 }
2865
2866 return 0;
2867}
2868
2869/**
2870 * mega_init_scb()
2871 * @adapter - pointer to our soft state
2872 *
2873 * Allocate memory for the various pointers in the scb structures:
2874 * scatter-gather list pointer, passthru and extended passthru structure
2875 * pointers.
2876 */
2877static int
2878mega_init_scb(adapter_t *adapter)
2879{
2880 scb_t *scb;
2881 int i;
2882
2883 for( i = 0; i < adapter->max_cmds; i++ ) {
2884
2885 scb = &adapter->scb_list[i];
2886
2887 scb->sgl64 = NULL;
2888 scb->sgl = NULL;
2889 scb->pthru = NULL;
2890 scb->epthru = NULL;
2891 }
2892
2893 for( i = 0; i < adapter->max_cmds; i++ ) {
2894
2895 scb = &adapter->scb_list[i];
2896
2897 scb->idx = i;
2898
2899 scb->sgl64 = pci_alloc_consistent(adapter->dev,
2900 sizeof(mega_sgl64) * adapter->sglen,
2901 &scb->sgl_dma_addr);
2902
2903 scb->sgl = (mega_sglist *)scb->sgl64;
2904
2905 if( !scb->sgl ) {
2906 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2907 mega_free_sgl(adapter);
2908 return -1;
2909 }
2910
2911 scb->pthru = pci_alloc_consistent(adapter->dev,
2912 sizeof(mega_passthru),
2913 &scb->pthru_dma_addr);
2914
2915 if( !scb->pthru ) {
2916 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2917 mega_free_sgl(adapter);
2918 return -1;
2919 }
2920
2921 scb->epthru = pci_alloc_consistent(adapter->dev,
2922 sizeof(mega_ext_passthru),
2923 &scb->epthru_dma_addr);
2924
2925 if( !scb->epthru ) {
2926 dev_warn(&adapter->dev->dev,
2927 "Can't allocate extended passthru\n");
2928 mega_free_sgl(adapter);
2929 return -1;
2930 }
2931
2932
2933 scb->dma_type = MEGA_DMA_TYPE_NONE;
2934
2935 /*
2936 * Link to free list
2937 * lock not required since we are loading the driver, so no
2938 * commands possible right now.
2939 */
2940 scb->state = SCB_FREE;
2941 scb->cmd = NULL;
2942 list_add(&scb->list, &adapter->free_list);
2943 }
2944
2945 return 0;
2946}
2947
2948
2949/**
2950 * megadev_open()
2951 * @inode - unused
2952 * @filep - unused
2953 *
2954 * Routines for the character/ioctl interface to the driver. Find out if this
2955 * is a valid open.
2956 */
2957static int
2958megadev_open (struct inode *inode, struct file *filep)
2959{
2960 /*
2961 * Only allow superuser to access private ioctl interface
2962 */
2963 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2964
2965 return 0;
2966}
2967
2968
2969/**
2970 * megadev_ioctl()
2971 * @inode - Our device inode
2972 * @filep - unused
2973 * @cmd - ioctl command
2974 * @arg - user buffer
2975 *
2976 * ioctl entry point for our private ioctl interface. We move the data in from
2977 * the user space, prepare the command (if necessary, convert the old MIMD
2978 * ioctl to new ioctl command), and issue a synchronous command to the
2979 * controller.
2980 */
2981static int
2982megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
2983{
2984 adapter_t *adapter;
2985 nitioctl_t uioc;
2986 int adapno;
2987 int rval;
2988 mega_passthru __user *upthru; /* user address for passthru */
2989 mega_passthru *pthru; /* copy user passthru here */
2990 dma_addr_t pthru_dma_hndl;
2991 void *data = NULL; /* data to be transferred */
2992 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
2993 megacmd_t mc;
2994 megastat_t __user *ustats;
2995 int num_ldrv;
2996 u32 uxferaddr = 0;
2997 struct pci_dev *pdev;
2998
2999 ustats = NULL; /* avoid compilation warnings */
3000 num_ldrv = 0;
3001
3002 /*
3003 * Make sure only USCSICMD are issued through this interface.
3004 * MIMD application would still fire different command.
3005 */
3006 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3007 return -EINVAL;
3008 }
3009
3010 /*
3011 * Check and convert a possible MIMD command to NIT command.
3012 * mega_m_to_n() copies the data from the user space, so we do not
3013 * have to do it here.
3014 * NOTE: We will need some user address to copyout the data, therefore
3015 * the inteface layer will also provide us with the required user
3016 * addresses.
3017 */
3018 memset(&uioc, 0, sizeof(nitioctl_t));
3019 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3020 return rval;
3021
3022
3023 switch( uioc.opcode ) {
3024
3025 case GET_DRIVER_VER:
3026 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3027 return (-EFAULT);
3028
3029 break;
3030
3031 case GET_N_ADAP:
3032 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3033 return (-EFAULT);
3034
3035 /*
3036 * Shucks. MIMD interface returns a positive value for number
3037 * of adapters. TODO: Change it to return 0 when there is no
3038 * applicatio using mimd interface.
3039 */
3040 return hba_count;
3041
3042 case GET_ADAP_INFO:
3043
3044 /*
3045 * Which adapter
3046 */
3047 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3048 return (-ENODEV);
3049
3050 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3051 sizeof(struct mcontroller)) )
3052 return (-EFAULT);
3053 break;
3054
3055#if MEGA_HAVE_STATS
3056
3057 case GET_STATS:
3058 /*
3059 * Which adapter
3060 */
3061 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3062 return (-ENODEV);
3063
3064 adapter = hba_soft_state[adapno];
3065
3066 ustats = uioc.uioc_uaddr;
3067
3068 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3069 return (-EFAULT);
3070
3071 /*
3072 * Check for the validity of the logical drive number
3073 */
3074 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3075
3076 if( copy_to_user(ustats->nreads, adapter->nreads,
3077 num_ldrv*sizeof(u32)) )
3078 return -EFAULT;
3079
3080 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3081 num_ldrv*sizeof(u32)) )
3082 return -EFAULT;
3083
3084 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3085 num_ldrv*sizeof(u32)) )
3086 return -EFAULT;
3087
3088 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3089 num_ldrv*sizeof(u32)) )
3090 return -EFAULT;
3091
3092 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3093 num_ldrv*sizeof(u32)) )
3094 return -EFAULT;
3095
3096 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3097 num_ldrv*sizeof(u32)) )
3098 return -EFAULT;
3099
3100 return 0;
3101
3102#endif
3103 case MBOX_CMD:
3104
3105 /*
3106 * Which adapter
3107 */
3108 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3109 return (-ENODEV);
3110
3111 adapter = hba_soft_state[adapno];
3112
3113 /*
3114 * Deletion of logical drive is a special case. The adapter
3115 * should be quiescent before this command is issued.
3116 */
3117 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3118 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3119
3120 /*
3121 * Do we support this feature
3122 */
3123 if( !adapter->support_random_del ) {
3124 dev_warn(&adapter->dev->dev, "logdrv "
3125 "delete on non-supporting F/W\n");
3126
3127 return (-EINVAL);
3128 }
3129
3130 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3131
3132 if( rval == 0 ) {
3133 memset(&mc, 0, sizeof(megacmd_t));
3134
3135 mc.status = rval;
3136
3137 rval = mega_n_to_m((void __user *)arg, &mc);
3138 }
3139
3140 return rval;
3141 }
3142 /*
3143 * This interface only support the regular passthru commands.
3144 * Reject extended passthru and 64-bit passthru
3145 */
3146 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3147 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3148
3149 dev_warn(&adapter->dev->dev, "rejected passthru\n");
3150
3151 return (-EINVAL);
3152 }
3153
3154 /*
3155 * For all internal commands, the buffer must be allocated in
3156 * <4GB address range
3157 */
3158 if( make_local_pdev(adapter, &pdev) != 0 )
3159 return -EIO;
3160
3161 /* Is it a passthru command or a DCMD */
3162 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3163 /* Passthru commands */
3164
3165 pthru = pci_alloc_consistent(pdev,
3166 sizeof(mega_passthru),
3167 &pthru_dma_hndl);
3168
3169 if( pthru == NULL ) {
3170 free_local_pdev(pdev);
3171 return (-ENOMEM);
3172 }
3173
3174 /*
3175 * The user passthru structure
3176 */
3177 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3178
3179 /*
3180 * Copy in the user passthru here.
3181 */
3182 if( copy_from_user(pthru, upthru,
3183 sizeof(mega_passthru)) ) {
3184
3185 pci_free_consistent(pdev,
3186 sizeof(mega_passthru), pthru,
3187 pthru_dma_hndl);
3188
3189 free_local_pdev(pdev);
3190
3191 return (-EFAULT);
3192 }
3193
3194 /*
3195 * Is there a data transfer
3196 */
3197 if( pthru->dataxferlen ) {
3198 data = pci_alloc_consistent(pdev,
3199 pthru->dataxferlen,
3200 &data_dma_hndl);
3201
3202 if( data == NULL ) {
3203 pci_free_consistent(pdev,
3204 sizeof(mega_passthru),
3205 pthru,
3206 pthru_dma_hndl);
3207
3208 free_local_pdev(pdev);
3209
3210 return (-ENOMEM);
3211 }
3212
3213 /*
3214 * Save the user address and point the kernel
3215 * address at just allocated memory
3216 */
3217 uxferaddr = pthru->dataxferaddr;
3218 pthru->dataxferaddr = data_dma_hndl;
3219 }
3220
3221
3222 /*
3223 * Is data coming down-stream
3224 */
3225 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3226 /*
3227 * Get the user data
3228 */
3229 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3230 pthru->dataxferlen) ) {
3231 rval = (-EFAULT);
3232 goto freemem_and_return;
3233 }
3234 }
3235
3236 memset(&mc, 0, sizeof(megacmd_t));
3237
3238 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3239 mc.xferaddr = (u32)pthru_dma_hndl;
3240
3241 /*
3242 * Issue the command
3243 */
3244 mega_internal_command(adapter, &mc, pthru);
3245
3246 rval = mega_n_to_m((void __user *)arg, &mc);
3247
3248 if( rval ) goto freemem_and_return;
3249
3250
3251 /*
3252 * Is data going up-stream
3253 */
3254 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3255 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3256 pthru->dataxferlen) ) {
3257 rval = (-EFAULT);
3258 }
3259 }
3260
3261 /*
3262 * Send the request sense data also, irrespective of
3263 * whether the user has asked for it or not.
3264 */
3265 if (copy_to_user(upthru->reqsensearea,
3266 pthru->reqsensearea, 14))
3267 rval = -EFAULT;
3268
3269freemem_and_return:
3270 if( pthru->dataxferlen ) {
3271 pci_free_consistent(pdev,
3272 pthru->dataxferlen, data,
3273 data_dma_hndl);
3274 }
3275
3276 pci_free_consistent(pdev, sizeof(mega_passthru),
3277 pthru, pthru_dma_hndl);
3278
3279 free_local_pdev(pdev);
3280
3281 return rval;
3282 }
3283 else {
3284 /* DCMD commands */
3285
3286 /*
3287 * Is there a data transfer
3288 */
3289 if( uioc.xferlen ) {
3290 data = pci_alloc_consistent(pdev,
3291 uioc.xferlen, &data_dma_hndl);
3292
3293 if( data == NULL ) {
3294 free_local_pdev(pdev);
3295 return (-ENOMEM);
3296 }
3297
3298 uxferaddr = MBOX(uioc)->xferaddr;
3299 }
3300
3301 /*
3302 * Is data coming down-stream
3303 */
3304 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3305 /*
3306 * Get the user data
3307 */
3308 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3309 uioc.xferlen) ) {
3310
3311 pci_free_consistent(pdev,
3312 uioc.xferlen,
3313 data, data_dma_hndl);
3314
3315 free_local_pdev(pdev);
3316
3317 return (-EFAULT);
3318 }
3319 }
3320
3321 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3322
3323 mc.xferaddr = (u32)data_dma_hndl;
3324
3325 /*
3326 * Issue the command
3327 */
3328 mega_internal_command(adapter, &mc, NULL);
3329
3330 rval = mega_n_to_m((void __user *)arg, &mc);
3331
3332 if( rval ) {
3333 if( uioc.xferlen ) {
3334 pci_free_consistent(pdev,
3335 uioc.xferlen, data,
3336 data_dma_hndl);
3337 }
3338
3339 free_local_pdev(pdev);
3340
3341 return rval;
3342 }
3343
3344 /*
3345 * Is data going up-stream
3346 */
3347 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3348 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3349 uioc.xferlen) ) {
3350
3351 rval = (-EFAULT);
3352 }
3353 }
3354
3355 if( uioc.xferlen ) {
3356 pci_free_consistent(pdev,
3357 uioc.xferlen, data,
3358 data_dma_hndl);
3359 }
3360
3361 free_local_pdev(pdev);
3362
3363 return rval;
3364 }
3365
3366 default:
3367 return (-EINVAL);
3368 }
3369
3370 return 0;
3371}
3372
3373static long
3374megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3375{
3376 int ret;
3377
3378 mutex_lock(&megadev_mutex);
3379 ret = megadev_ioctl(filep, cmd, arg);
3380 mutex_unlock(&megadev_mutex);
3381
3382 return ret;
3383}
3384
3385/**
3386 * mega_m_to_n()
3387 * @arg - user address
3388 * @uioc - new ioctl structure
3389 *
3390 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3391 * structure
3392 *
3393 * Converts the older mimd ioctl structure to newer NIT structure
3394 */
3395static int
3396mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3397{
3398 struct uioctl_t uioc_mimd;
3399 char signature[8] = {0};
3400 u8 opcode;
3401 u8 subopcode;
3402
3403
3404 /*
3405 * check is the application conforms to NIT. We do not have to do much
3406 * in that case.
3407 * We exploit the fact that the signature is stored in the very
3408 * beginning of the structure.
3409 */
3410
3411 if( copy_from_user(signature, arg, 7) )
3412 return (-EFAULT);
3413
3414 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3415
3416 /*
3417 * NOTE NOTE: The nit ioctl is still under flux because of
3418 * change of mailbox definition, in HPE. No applications yet
3419 * use this interface and let's not have applications use this
3420 * interface till the new specifitions are in place.
3421 */
3422 return -EINVAL;
3423#if 0
3424 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3425 return (-EFAULT);
3426 return 0;
3427#endif
3428 }
3429
3430 /*
3431 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3432 *
3433 * Get the user ioctl structure
3434 */
3435 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3436 return (-EFAULT);
3437
3438
3439 /*
3440 * Get the opcode and subopcode for the commands
3441 */
3442 opcode = uioc_mimd.ui.fcs.opcode;
3443 subopcode = uioc_mimd.ui.fcs.subopcode;
3444
3445 switch (opcode) {
3446 case 0x82:
3447
3448 switch (subopcode) {
3449
3450 case MEGAIOC_QDRVRVER: /* Query driver version */
3451 uioc->opcode = GET_DRIVER_VER;
3452 uioc->uioc_uaddr = uioc_mimd.data;
3453 break;
3454
3455 case MEGAIOC_QNADAP: /* Get # of adapters */
3456 uioc->opcode = GET_N_ADAP;
3457 uioc->uioc_uaddr = uioc_mimd.data;
3458 break;
3459
3460 case MEGAIOC_QADAPINFO: /* Get adapter information */
3461 uioc->opcode = GET_ADAP_INFO;
3462 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3463 uioc->uioc_uaddr = uioc_mimd.data;
3464 break;
3465
3466 default:
3467 return(-EINVAL);
3468 }
3469
3470 break;
3471
3472
3473 case 0x81:
3474
3475 uioc->opcode = MBOX_CMD;
3476 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3477
3478 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3479
3480 uioc->xferlen = uioc_mimd.ui.fcs.length;
3481
3482 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3483 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3484
3485 break;
3486
3487 case 0x80:
3488
3489 uioc->opcode = MBOX_CMD;
3490 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3491
3492 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3493
3494 /*
3495 * Choose the xferlen bigger of input and output data
3496 */
3497 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3498 uioc_mimd.outlen : uioc_mimd.inlen;
3499
3500 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3501 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3502
3503 break;
3504
3505 default:
3506 return (-EINVAL);
3507
3508 }
3509
3510 return 0;
3511}
3512
3513/*
3514 * mega_n_to_m()
3515 * @arg - user address
3516 * @mc - mailbox command
3517 *
3518 * Updates the status information to the application, depending on application
3519 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3520 */
3521static int
3522mega_n_to_m(void __user *arg, megacmd_t *mc)
3523{
3524 nitioctl_t __user *uiocp;
3525 megacmd_t __user *umc;
3526 mega_passthru __user *upthru;
3527 struct uioctl_t __user *uioc_mimd;
3528 char signature[8] = {0};
3529
3530 /*
3531 * check is the application conforms to NIT.
3532 */
3533 if( copy_from_user(signature, arg, 7) )
3534 return -EFAULT;
3535
3536 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3537
3538 uiocp = arg;
3539
3540 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3541 return (-EFAULT);
3542
3543 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3544
3545 umc = MBOX_P(uiocp);
3546
3547 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3548 return -EFAULT;
3549
3550 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3551 return (-EFAULT);
3552 }
3553 }
3554 else {
3555 uioc_mimd = arg;
3556
3557 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3558 return (-EFAULT);
3559
3560 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3561
3562 umc = (megacmd_t __user *)uioc_mimd->mbox;
3563
3564 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3565 return (-EFAULT);
3566
3567 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3568 return (-EFAULT);
3569 }
3570 }
3571
3572 return 0;
3573}
3574
3575
3576/*
3577 * MEGARAID 'FW' commands.
3578 */
3579
3580/**
3581 * mega_is_bios_enabled()
3582 * @adapter - pointer to our soft state
3583 *
3584 * issue command to find out if the BIOS is enabled for this controller
3585 */
3586static int
3587mega_is_bios_enabled(adapter_t *adapter)
3588{
3589 unsigned char raw_mbox[sizeof(struct mbox_out)];
3590 mbox_t *mbox;
3591 int ret;
3592
3593 mbox = (mbox_t *)raw_mbox;
3594
3595 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3596
3597 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3598
3599 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3600
3601 raw_mbox[0] = IS_BIOS_ENABLED;
3602 raw_mbox[2] = GET_BIOS;
3603
3604
3605 ret = issue_scb_block(adapter, raw_mbox);
3606
3607 return *(char *)adapter->mega_buffer;
3608}
3609
3610
3611/**
3612 * mega_enum_raid_scsi()
3613 * @adapter - pointer to our soft state
3614 *
3615 * Find out what channels are RAID/SCSI. This information is used to
3616 * differentiate the virtual channels and physical channels and to support
3617 * ROMB feature and non-disk devices.
3618 */
3619static void
3620mega_enum_raid_scsi(adapter_t *adapter)
3621{
3622 unsigned char raw_mbox[sizeof(struct mbox_out)];
3623 mbox_t *mbox;
3624 int i;
3625
3626 mbox = (mbox_t *)raw_mbox;
3627
3628 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3629
3630 /*
3631 * issue command to find out what channels are raid/scsi
3632 */
3633 raw_mbox[0] = CHNL_CLASS;
3634 raw_mbox[2] = GET_CHNL_CLASS;
3635
3636 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3637
3638 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3639
3640 /*
3641 * Non-ROMB firmware fail this command, so all channels
3642 * must be shown RAID
3643 */
3644 adapter->mega_ch_class = 0xFF;
3645
3646 if(!issue_scb_block(adapter, raw_mbox)) {
3647 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3648
3649 }
3650
3651 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3652 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3653 dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3654 i);
3655 }
3656 else {
3657 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3658 i);
3659 }
3660 }
3661
3662 return;
3663}
3664
3665
3666/**
3667 * mega_get_boot_drv()
3668 * @adapter - pointer to our soft state
3669 *
3670 * Find out which device is the boot device. Note, any logical drive or any
3671 * phyical device (e.g., a CDROM) can be designated as a boot device.
3672 */
3673static void
3674mega_get_boot_drv(adapter_t *adapter)
3675{
3676 struct private_bios_data *prv_bios_data;
3677 unsigned char raw_mbox[sizeof(struct mbox_out)];
3678 mbox_t *mbox;
3679 u16 cksum = 0;
3680 u8 *cksum_p;
3681 u8 boot_pdrv;
3682 int i;
3683
3684 mbox = (mbox_t *)raw_mbox;
3685
3686 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3687
3688 raw_mbox[0] = BIOS_PVT_DATA;
3689 raw_mbox[2] = GET_BIOS_PVT_DATA;
3690
3691 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3692
3693 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3694
3695 adapter->boot_ldrv_enabled = 0;
3696 adapter->boot_ldrv = 0;
3697
3698 adapter->boot_pdrv_enabled = 0;
3699 adapter->boot_pdrv_ch = 0;
3700 adapter->boot_pdrv_tgt = 0;
3701
3702 if(issue_scb_block(adapter, raw_mbox) == 0) {
3703 prv_bios_data =
3704 (struct private_bios_data *)adapter->mega_buffer;
3705
3706 cksum = 0;
3707 cksum_p = (char *)prv_bios_data;
3708 for (i = 0; i < 14; i++ ) {
3709 cksum += (u16)(*cksum_p++);
3710 }
3711
3712 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3713
3714 /*
3715 * If MSB is set, a physical drive is set as boot
3716 * device
3717 */
3718 if( prv_bios_data->boot_drv & 0x80 ) {
3719 adapter->boot_pdrv_enabled = 1;
3720 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3721 adapter->boot_pdrv_ch = boot_pdrv / 16;
3722 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3723 }
3724 else {
3725 adapter->boot_ldrv_enabled = 1;
3726 adapter->boot_ldrv = prv_bios_data->boot_drv;
3727 }
3728 }
3729 }
3730
3731}
3732
3733/**
3734 * mega_support_random_del()
3735 * @adapter - pointer to our soft state
3736 *
3737 * Find out if this controller supports random deletion and addition of
3738 * logical drives
3739 */
3740static int
3741mega_support_random_del(adapter_t *adapter)
3742{
3743 unsigned char raw_mbox[sizeof(struct mbox_out)];
3744 mbox_t *mbox;
3745 int rval;
3746
3747 mbox = (mbox_t *)raw_mbox;
3748
3749 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3750
3751 /*
3752 * issue command
3753 */
3754 raw_mbox[0] = FC_DEL_LOGDRV;
3755 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3756
3757 rval = issue_scb_block(adapter, raw_mbox);
3758
3759 return !rval;
3760}
3761
3762
3763/**
3764 * mega_support_ext_cdb()
3765 * @adapter - pointer to our soft state
3766 *
3767 * Find out if this firmware support cdblen > 10
3768 */
3769static int
3770mega_support_ext_cdb(adapter_t *adapter)
3771{
3772 unsigned char raw_mbox[sizeof(struct mbox_out)];
3773 mbox_t *mbox;
3774 int rval;
3775
3776 mbox = (mbox_t *)raw_mbox;
3777
3778 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3779 /*
3780 * issue command to find out if controller supports extended CDBs.
3781 */
3782 raw_mbox[0] = 0xA4;
3783 raw_mbox[2] = 0x16;
3784
3785 rval = issue_scb_block(adapter, raw_mbox);
3786
3787 return !rval;
3788}
3789
3790
3791/**
3792 * mega_del_logdrv()
3793 * @adapter - pointer to our soft state
3794 * @logdrv - logical drive to be deleted
3795 *
3796 * Delete the specified logical drive. It is the responsibility of the user
3797 * app to let the OS know about this operation.
3798 */
3799static int
3800mega_del_logdrv(adapter_t *adapter, int logdrv)
3801{
3802 unsigned long flags;
3803 scb_t *scb;
3804 int rval;
3805
3806 /*
3807 * Stop sending commands to the controller, queue them internally.
3808 * When deletion is complete, ISR will flush the queue.
3809 */
3810 atomic_set(&adapter->quiescent, 1);
3811
3812 /*
3813 * Wait till all the issued commands are complete and there are no
3814 * commands in the pending queue
3815 */
3816 while (atomic_read(&adapter->pend_cmds) > 0 ||
3817 !list_empty(&adapter->pending_list))
3818 msleep(1000); /* sleep for 1s */
3819
3820 rval = mega_do_del_logdrv(adapter, logdrv);
3821
3822 spin_lock_irqsave(&adapter->lock, flags);
3823
3824 /*
3825 * If delete operation was successful, add 0x80 to the logical drive
3826 * ids for commands in the pending queue.
3827 */
3828 if (adapter->read_ldidmap) {
3829 struct list_head *pos;
3830 list_for_each(pos, &adapter->pending_list) {
3831 scb = list_entry(pos, scb_t, list);
3832 if (scb->pthru->logdrv < 0x80 )
3833 scb->pthru->logdrv += 0x80;
3834 }
3835 }
3836
3837 atomic_set(&adapter->quiescent, 0);
3838
3839 mega_runpendq(adapter);
3840
3841 spin_unlock_irqrestore(&adapter->lock, flags);
3842
3843 return rval;
3844}
3845
3846
3847static int
3848mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3849{
3850 megacmd_t mc;
3851 int rval;
3852
3853 memset( &mc, 0, sizeof(megacmd_t));
3854
3855 mc.cmd = FC_DEL_LOGDRV;
3856 mc.opcode = OP_DEL_LOGDRV;
3857 mc.subopcode = logdrv;
3858
3859 rval = mega_internal_command(adapter, &mc, NULL);
3860
3861 /* log this event */
3862 if(rval) {
3863 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3864 return rval;
3865 }
3866
3867 /*
3868 * After deleting first logical drive, the logical drives must be
3869 * addressed by adding 0x80 to the logical drive id.
3870 */
3871 adapter->read_ldidmap = 1;
3872
3873 return rval;
3874}
3875
3876
3877/**
3878 * mega_get_max_sgl()
3879 * @adapter - pointer to our soft state
3880 *
3881 * Find out the maximum number of scatter-gather elements supported by this
3882 * version of the firmware
3883 */
3884static void
3885mega_get_max_sgl(adapter_t *adapter)
3886{
3887 unsigned char raw_mbox[sizeof(struct mbox_out)];
3888 mbox_t *mbox;
3889
3890 mbox = (mbox_t *)raw_mbox;
3891
3892 memset(mbox, 0, sizeof(raw_mbox));
3893
3894 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3895
3896 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3897
3898 raw_mbox[0] = MAIN_MISC_OPCODE;
3899 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3900
3901
3902 if( issue_scb_block(adapter, raw_mbox) ) {
3903 /*
3904 * f/w does not support this command. Choose the default value
3905 */
3906 adapter->sglen = MIN_SGLIST;
3907 }
3908 else {
3909 adapter->sglen = *((char *)adapter->mega_buffer);
3910
3911 /*
3912 * Make sure this is not more than the resources we are
3913 * planning to allocate
3914 */
3915 if ( adapter->sglen > MAX_SGLIST )
3916 adapter->sglen = MAX_SGLIST;
3917 }
3918
3919 return;
3920}
3921
3922
3923/**
3924 * mega_support_cluster()
3925 * @adapter - pointer to our soft state
3926 *
3927 * Find out if this firmware support cluster calls.
3928 */
3929static int
3930mega_support_cluster(adapter_t *adapter)
3931{
3932 unsigned char raw_mbox[sizeof(struct mbox_out)];
3933 mbox_t *mbox;
3934
3935 mbox = (mbox_t *)raw_mbox;
3936
3937 memset(mbox, 0, sizeof(raw_mbox));
3938
3939 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3940
3941 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3942
3943 /*
3944 * Try to get the initiator id. This command will succeed iff the
3945 * clustering is available on this HBA.
3946 */
3947 raw_mbox[0] = MEGA_GET_TARGET_ID;
3948
3949 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3950
3951 /*
3952 * Cluster support available. Get the initiator target id.
3953 * Tell our id to mid-layer too.
3954 */
3955 adapter->this_id = *(u32 *)adapter->mega_buffer;
3956 adapter->host->this_id = adapter->this_id;
3957
3958 return 1;
3959 }
3960
3961 return 0;
3962}
3963
3964#ifdef CONFIG_PROC_FS
3965/**
3966 * mega_adapinq()
3967 * @adapter - pointer to our soft state
3968 * @dma_handle - DMA address of the buffer
3969 *
3970 * Issue internal commands while interrupts are available.
3971 * We only issue direct mailbox commands from within the driver. ioctl()
3972 * interface using these routines can issue passthru commands.
3973 */
3974static int
3975mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
3976{
3977 megacmd_t mc;
3978
3979 memset(&mc, 0, sizeof(megacmd_t));
3980
3981 if( adapter->flag & BOARD_40LD ) {
3982 mc.cmd = FC_NEW_CONFIG;
3983 mc.opcode = NC_SUBOP_ENQUIRY3;
3984 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
3985 }
3986 else {
3987 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
3988 }
3989
3990 mc.xferaddr = (u32)dma_handle;
3991
3992 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
3993 return -1;
3994 }
3995
3996 return 0;
3997}
3998
3999
4000/** mega_internal_dev_inquiry()
4001 * @adapter - pointer to our soft state
4002 * @ch - channel for this device
4003 * @tgt - ID of this device
4004 * @buf_dma_handle - DMA address of the buffer
4005 *
4006 * Issue the scsi inquiry for the specified device.
4007 */
4008static int
4009mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4010 dma_addr_t buf_dma_handle)
4011{
4012 mega_passthru *pthru;
4013 dma_addr_t pthru_dma_handle;
4014 megacmd_t mc;
4015 int rval;
4016 struct pci_dev *pdev;
4017
4018
4019 /*
4020 * For all internal commands, the buffer must be allocated in <4GB
4021 * address range
4022 */
4023 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4024
4025 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4026 &pthru_dma_handle);
4027
4028 if( pthru == NULL ) {
4029 free_local_pdev(pdev);
4030 return -1;
4031 }
4032
4033 pthru->timeout = 2;
4034 pthru->ars = 1;
4035 pthru->reqsenselen = 14;
4036 pthru->islogical = 0;
4037
4038 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4039
4040 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4041
4042 pthru->cdblen = 6;
4043
4044 pthru->cdb[0] = INQUIRY;
4045 pthru->cdb[1] = 0;
4046 pthru->cdb[2] = 0;
4047 pthru->cdb[3] = 0;
4048 pthru->cdb[4] = 255;
4049 pthru->cdb[5] = 0;
4050
4051
4052 pthru->dataxferaddr = (u32)buf_dma_handle;
4053 pthru->dataxferlen = 256;
4054
4055 memset(&mc, 0, sizeof(megacmd_t));
4056
4057 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4058 mc.xferaddr = (u32)pthru_dma_handle;
4059
4060 rval = mega_internal_command(adapter, &mc, pthru);
4061
4062 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4063 pthru_dma_handle);
4064
4065 free_local_pdev(pdev);
4066
4067 return rval;
4068}
4069#endif
4070
4071/**
4072 * mega_internal_command()
4073 * @adapter - pointer to our soft state
4074 * @mc - the mailbox command
4075 * @pthru - Passthru structure for DCDB commands
4076 *
4077 * Issue the internal commands in interrupt mode.
4078 * The last argument is the address of the passthru structure if the command
4079 * to be fired is a passthru command
4080 *
4081 * Note: parameter 'pthru' is null for non-passthru commands.
4082 */
4083static int
4084mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4085{
4086 unsigned long flags;
4087 scb_t *scb;
4088 int rval;
4089
4090 /*
4091 * The internal commands share one command id and hence are
4092 * serialized. This is so because we want to reserve maximum number of
4093 * available command ids for the I/O commands.
4094 */
4095 mutex_lock(&adapter->int_mtx);
4096
4097 scb = &adapter->int_scb;
4098 memset(scb, 0, sizeof(scb_t));
4099
4100 scb->idx = CMDID_INT_CMDS;
4101 scb->state |= SCB_ACTIVE | SCB_PENDQ;
4102
4103 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4104
4105 /*
4106 * Is it a passthru command
4107 */
4108 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4109 scb->pthru = pthru;
4110
4111 spin_lock_irqsave(&adapter->lock, flags);
4112 list_add_tail(&scb->list, &adapter->pending_list);
4113 /*
4114 * Check if the HBA is in quiescent state, e.g., during a
4115 * delete logical drive opertion. If it is, don't run
4116 * the pending_list.
4117 */
4118 if (atomic_read(&adapter->quiescent) == 0)
4119 mega_runpendq(adapter);
4120 spin_unlock_irqrestore(&adapter->lock, flags);
4121
4122 wait_for_completion(&adapter->int_waitq);
4123
4124 mc->status = rval = adapter->int_status;
4125
4126 /*
4127 * Print a debug message for all failed commands. Applications can use
4128 * this information.
4129 */
4130 if (rval && trace_level) {
4131 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4132 mc->cmd, mc->opcode, mc->subopcode, rval);
4133 }
4134
4135 mutex_unlock(&adapter->int_mtx);
4136 return rval;
4137}
4138
4139static struct scsi_host_template megaraid_template = {
4140 .module = THIS_MODULE,
4141 .name = "MegaRAID",
4142 .proc_name = "megaraid_legacy",
4143 .info = megaraid_info,
4144 .queuecommand = megaraid_queue,
4145 .bios_param = megaraid_biosparam,
4146 .max_sectors = MAX_SECTORS_PER_IO,
4147 .can_queue = MAX_COMMANDS,
4148 .this_id = DEFAULT_INITIATOR_ID,
4149 .sg_tablesize = MAX_SGLIST,
4150 .cmd_per_lun = DEF_CMD_PER_LUN,
4151 .eh_abort_handler = megaraid_abort,
4152 .eh_device_reset_handler = megaraid_reset,
4153 .eh_bus_reset_handler = megaraid_reset,
4154 .eh_host_reset_handler = megaraid_reset,
4155 .no_write_same = 1,
4156};
4157
4158static int
4159megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4160{
4161 struct Scsi_Host *host;
4162 adapter_t *adapter;
4163 unsigned long mega_baseport, tbase, flag = 0;
4164 u16 subsysid, subsysvid;
4165 u8 pci_bus, pci_dev_func;
4166 int irq, i, j;
4167 int error = -ENODEV;
4168
4169 if (hba_count >= MAX_CONTROLLERS)
4170 goto out;
4171
4172 if (pci_enable_device(pdev))
4173 goto out;
4174 pci_set_master(pdev);
4175
4176 pci_bus = pdev->bus->number;
4177 pci_dev_func = pdev->devfn;
4178
4179 /*
4180 * The megaraid3 stuff reports the ID of the Intel part which is not
4181 * remotely specific to the megaraid
4182 */
4183 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4184 u16 magic;
4185 /*
4186 * Don't fall over the Compaq management cards using the same
4187 * PCI identifier
4188 */
4189 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4190 pdev->subsystem_device == 0xC000)
4191 return -ENODEV;
4192 /* Now check the magic signature byte */
4193 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4194 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4195 return -ENODEV;
4196 /* Ok it is probably a megaraid */
4197 }
4198
4199 /*
4200 * For these vendor and device ids, signature offsets are not
4201 * valid and 64 bit is implicit
4202 */
4203 if (id->driver_data & BOARD_64BIT)
4204 flag |= BOARD_64BIT;
4205 else {
4206 u32 magic64;
4207
4208 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4209 if (magic64 == HBA_SIGNATURE_64BIT)
4210 flag |= BOARD_64BIT;
4211 }
4212
4213 subsysvid = pdev->subsystem_vendor;
4214 subsysid = pdev->subsystem_device;
4215
4216 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4217 id->vendor, id->device);
4218
4219 /* Read the base port and IRQ from PCI */
4220 mega_baseport = pci_resource_start(pdev, 0);
4221 irq = pdev->irq;
4222
4223 tbase = mega_baseport;
4224 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4225 flag |= BOARD_MEMMAP;
4226
4227 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4228 dev_warn(&pdev->dev, "mem region busy!\n");
4229 goto out_disable_device;
4230 }
4231
4232 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4233 if (!mega_baseport) {
4234 dev_warn(&pdev->dev, "could not map hba memory\n");
4235 goto out_release_region;
4236 }
4237 } else {
4238 flag |= BOARD_IOMAP;
4239 mega_baseport += 0x10;
4240
4241 if (!request_region(mega_baseport, 16, "megaraid"))
4242 goto out_disable_device;
4243 }
4244
4245 /* Initialize SCSI Host structure */
4246 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4247 if (!host)
4248 goto out_iounmap;
4249
4250 adapter = (adapter_t *)host->hostdata;
4251 memset(adapter, 0, sizeof(adapter_t));
4252
4253 dev_notice(&pdev->dev,
4254 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4255 host->host_no, mega_baseport, irq);
4256
4257 adapter->base = mega_baseport;
4258 if (flag & BOARD_MEMMAP)
4259 adapter->mmio_base = (void __iomem *) mega_baseport;
4260
4261 INIT_LIST_HEAD(&adapter->free_list);
4262 INIT_LIST_HEAD(&adapter->pending_list);
4263 INIT_LIST_HEAD(&adapter->completed_list);
4264
4265 adapter->flag = flag;
4266 spin_lock_init(&adapter->lock);
4267
4268 host->cmd_per_lun = max_cmd_per_lun;
4269 host->max_sectors = max_sectors_per_io;
4270
4271 adapter->dev = pdev;
4272 adapter->host = host;
4273
4274 adapter->host->irq = irq;
4275
4276 if (flag & BOARD_MEMMAP)
4277 adapter->host->base = tbase;
4278 else {
4279 adapter->host->io_port = tbase;
4280 adapter->host->n_io_port = 16;
4281 }
4282
4283 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4284
4285 /*
4286 * Allocate buffer to issue internal commands.
4287 */
4288 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4289 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4290 if (!adapter->mega_buffer) {
4291 dev_warn(&pdev->dev, "out of RAM\n");
4292 goto out_host_put;
4293 }
4294
4295 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t),
4296 GFP_KERNEL);
4297 if (!adapter->scb_list) {
4298 dev_warn(&pdev->dev, "out of RAM\n");
4299 goto out_free_cmd_buffer;
4300 }
4301
4302 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4303 megaraid_isr_memmapped : megaraid_isr_iomapped,
4304 IRQF_SHARED, "megaraid", adapter)) {
4305 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4306 goto out_free_scb_list;
4307 }
4308
4309 if (mega_setup_mailbox(adapter))
4310 goto out_free_irq;
4311
4312 if (mega_query_adapter(adapter))
4313 goto out_free_mbox;
4314
4315 /*
4316 * Have checks for some buggy f/w
4317 */
4318 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4319 /*
4320 * Which firmware
4321 */
4322 if (!strcmp(adapter->fw_version, "3.00") ||
4323 !strcmp(adapter->fw_version, "3.01")) {
4324
4325 dev_warn(&pdev->dev,
4326 "Your card is a Dell PERC "
4327 "2/SC RAID controller with "
4328 "firmware\nmegaraid: 3.00 or 3.01. "
4329 "This driver is known to have "
4330 "corruption issues\nmegaraid: with "
4331 "those firmware versions on this "
4332 "specific card. In order\nmegaraid: "
4333 "to protect your data, please upgrade "
4334 "your firmware to version\nmegaraid: "
4335 "3.10 or later, available from the "
4336 "Dell Technical Support web\n"
4337 "megaraid: site at\nhttp://support."
4338 "dell.com/us/en/filelib/download/"
4339 "index.asp?fileid=2940\n"
4340 );
4341 }
4342 }
4343
4344 /*
4345 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4346 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4347 * support, since this firmware cannot handle 64 bit
4348 * addressing
4349 */
4350 if ((subsysvid == PCI_VENDOR_ID_HP) &&
4351 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4352 /*
4353 * which firmware
4354 */
4355 if (!strcmp(adapter->fw_version, "H01.07") ||
4356 !strcmp(adapter->fw_version, "H01.08") ||
4357 !strcmp(adapter->fw_version, "H01.09") ) {
4358 dev_warn(&pdev->dev,
4359 "Firmware H.01.07, "
4360 "H.01.08, and H.01.09 on 1M/2M "
4361 "controllers\n"
4362 "do not support 64 bit "
4363 "addressing.\nDISABLING "
4364 "64 bit support.\n");
4365 adapter->flag &= ~BOARD_64BIT;
4366 }
4367 }
4368
4369 if (mega_is_bios_enabled(adapter))
4370 mega_hbas[hba_count].is_bios_enabled = 1;
4371 mega_hbas[hba_count].hostdata_addr = adapter;
4372
4373 /*
4374 * Find out which channel is raid and which is scsi. This is
4375 * for ROMB support.
4376 */
4377 mega_enum_raid_scsi(adapter);
4378
4379 /*
4380 * Find out if a logical drive is set as the boot drive. If
4381 * there is one, will make that as the first logical drive.
4382 * ROMB: Do we have to boot from a physical drive. Then all
4383 * the physical drives would appear before the logical disks.
4384 * Else, all the physical drives would be exported to the mid
4385 * layer after logical drives.
4386 */
4387 mega_get_boot_drv(adapter);
4388
4389 if (adapter->boot_pdrv_enabled) {
4390 j = adapter->product_info.nchannels;
4391 for( i = 0; i < j; i++ )
4392 adapter->logdrv_chan[i] = 0;
4393 for( i = j; i < NVIRT_CHAN + j; i++ )
4394 adapter->logdrv_chan[i] = 1;
4395 } else {
4396 for (i = 0; i < NVIRT_CHAN; i++)
4397 adapter->logdrv_chan[i] = 1;
4398 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4399 adapter->logdrv_chan[i] = 0;
4400 adapter->mega_ch_class <<= NVIRT_CHAN;
4401 }
4402
4403 /*
4404 * Do we support random deletion and addition of logical
4405 * drives
4406 */
4407 adapter->read_ldidmap = 0; /* set it after first logdrv
4408 delete cmd */
4409 adapter->support_random_del = mega_support_random_del(adapter);
4410
4411 /* Initialize SCBs */
4412 if (mega_init_scb(adapter))
4413 goto out_free_mbox;
4414
4415 /*
4416 * Reset the pending commands counter
4417 */
4418 atomic_set(&adapter->pend_cmds, 0);
4419
4420 /*
4421 * Reset the adapter quiescent flag
4422 */
4423