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LiteX: driver for MMCM
[linux/fpc-iii.git] / drivers / scsi / megaraid.c
blob80f546976c7e178d01a942a92cb3b474c524d9d1
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 *
4 * Linux MegaRAID device driver
5 *
6 * Copyright (c) 2002 LSI Logic Corporation.
7 *
8 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
9 * - fixes
10 * - speed-ups (list handling fixes, issued_list, optimizations.)
11 * - lots of cleanups.
12 *
13 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
14 * - new-style, hotplug-aware pci probing and scsi registration
15 *
16 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
17 * <Seokmann.Ju@lsil.com>
18 *
19 * Description: Linux device driver for LSI Logic MegaRAID controller
20 *
21 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
22 * 518, 520, 531, 532
23 *
24 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
25 * and others. Please send updates to the mailing list
26 * linux-scsi@vger.kernel.org .
27 */
28
29 #include <linux/mm.h>
30 #include <linux/fs.h>
31 #include <linux/blkdev.h>
32 #include <linux/uaccess.h>
33 #include <asm/io.h>
34 #include <linux/completion.h>
35 #include <linux/delay.h>
36 #include <linux/proc_fs.h>
37 #include <linux/seq_file.h>
38 #include <linux/reboot.h>
39 #include <linux/module.h>
40 #include <linux/list.h>
41 #include <linux/interrupt.h>
42 #include <linux/pci.h>
43 #include <linux/init.h>
44 #include <linux/dma-mapping.h>
45 #include <linux/mutex.h>
46 #include <linux/slab.h>
47 #include <scsi/scsicam.h>
48
49 #include "scsi.h"
50 #include <scsi/scsi_host.h>
51
52 #include "megaraid.h"
53
54 #define MEGARAID_MODULE_VERSION "2.00.4"
55
56 MODULE_AUTHOR ("sju@lsil.com");
57 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
58 MODULE_LICENSE ("GPL");
59 MODULE_VERSION(MEGARAID_MODULE_VERSION);
60
61 static DEFINE_MUTEX(megadev_mutex);
62 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
63 module_param(max_cmd_per_lun, uint, 0);
64 MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
65
66 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
67 module_param(max_sectors_per_io, ushort, 0);
68 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
69
70
71 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
72 module_param(max_mbox_busy_wait, ushort, 0);
73 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
74
75 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
76 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
77 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
78 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
79
80 /*
81 * Global variables
82 */
83
84 static int hba_count;
85 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
86 static struct proc_dir_entry *mega_proc_dir_entry;
87
88 /* For controller re-ordering */
89 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
90
91 static long
92 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
93
94 /*
95 * The File Operations structure for the serial/ioctl interface of the driver
96 */
97 static const struct file_operations megadev_fops = {
98 .owner = THIS_MODULE,
99 .unlocked_ioctl = megadev_unlocked_ioctl,
100 .open = megadev_open,
101 .llseek = noop_llseek,
102 };
103
104 /*
105 * Array to structures for storing the information about the controllers. This
106 * information is sent to the user level applications, when they do an ioctl
107 * for this information.
108 */
109 static struct mcontroller mcontroller[MAX_CONTROLLERS];
110
111 /* The current driver version */
112 static u32 driver_ver = 0x02000000;
113
114 /* major number used by the device for character interface */
115 static int major;
116
117 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
118
119
120 /*
121 * Debug variable to print some diagnostic messages
122 */
123 static int trace_level;
124
125 /**
126 * mega_setup_mailbox()
127 * @adapter: pointer to our soft state
128 *
129 * Allocates a 8 byte aligned memory for the handshake mailbox.
130 */
131 static int
132 mega_setup_mailbox(adapter_t *adapter)
133 {
134 unsigned long align;
135
136 adapter->una_mbox64 = dma_alloc_coherent(&adapter->dev->dev,
137 sizeof(mbox64_t),
138 &adapter->una_mbox64_dma,
139 GFP_KERNEL);
140
141 if( !adapter->una_mbox64 ) return -1;
142
143 adapter->mbox = &adapter->una_mbox64->mbox;
144
145 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
146 (~0UL ^ 0xFUL));
147
148 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
149
150 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
151
152 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
153
154 /*
155 * Register the mailbox if the controller is an io-mapped controller
156 */
157 if( adapter->flag & BOARD_IOMAP ) {
158
159 outb(adapter->mbox_dma & 0xFF,
160 adapter->host->io_port + MBOX_PORT0);
161
162 outb((adapter->mbox_dma >> 8) & 0xFF,
163 adapter->host->io_port + MBOX_PORT1);
164
165 outb((adapter->mbox_dma >> 16) & 0xFF,
166 adapter->host->io_port + MBOX_PORT2);
167
168 outb((adapter->mbox_dma >> 24) & 0xFF,
169 adapter->host->io_port + MBOX_PORT3);
170
171 outb(ENABLE_MBOX_BYTE,
172 adapter->host->io_port + ENABLE_MBOX_REGION);
173
174 irq_ack(adapter);
175
176 irq_enable(adapter);
177 }
178
179 return 0;
180 }
181
182
183 /*
184 * mega_query_adapter()
185 * @adapter - pointer to our soft state
186 *
187 * Issue the adapter inquiry commands to the controller and find out
188 * information and parameter about the devices attached
189 */
190 static int
191 mega_query_adapter(adapter_t *adapter)
192 {
193 dma_addr_t prod_info_dma_handle;
194 mega_inquiry3 *inquiry3;
195 u8 raw_mbox[sizeof(struct mbox_out)];
196 mbox_t *mbox;
197 int retval;
198
199 /* Initialize adapter inquiry mailbox */
200
201 mbox = (mbox_t *)raw_mbox;
202
203 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
204 memset(&mbox->m_out, 0, sizeof(raw_mbox));
205
206 /*
207 * Try to issue Inquiry3 command
208 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
209 * update enquiry3 structure
210 */
211 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
212
213 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
214
215 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
216 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
217 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
218
219 /* Issue a blocking command to the card */
220 if ((retval = issue_scb_block(adapter, raw_mbox))) {
221 /* the adapter does not support 40ld */
222
223 mraid_ext_inquiry *ext_inq;
224 mraid_inquiry *inq;
225 dma_addr_t dma_handle;
226
227 ext_inq = dma_alloc_coherent(&adapter->dev->dev,
228 sizeof(mraid_ext_inquiry),
229 &dma_handle, GFP_KERNEL);
230
231 if( ext_inq == NULL ) return -1;
232
233 inq = &ext_inq->raid_inq;
234
235 mbox->m_out.xferaddr = (u32)dma_handle;
236
237 /*issue old 0x04 command to adapter */
238 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
239
240 issue_scb_block(adapter, raw_mbox);
241
242 /*
243 * update Enquiry3 and ProductInfo structures with
244 * mraid_inquiry structure
245 */
246 mega_8_to_40ld(inq, inquiry3,
247 (mega_product_info *)&adapter->product_info);
248
249 dma_free_coherent(&adapter->dev->dev,
250 sizeof(mraid_ext_inquiry), ext_inq,
251 dma_handle);
252
253 } else { /*adapter supports 40ld */
254 adapter->flag |= BOARD_40LD;
255
256 /*
257 * get product_info, which is static information and will be
258 * unchanged
259 */
260 prod_info_dma_handle = dma_map_single(&adapter->dev->dev,
261 (void *)&adapter->product_info,
262 sizeof(mega_product_info),
263 DMA_FROM_DEVICE);
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 dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle,
276 sizeof(mega_product_info), DMA_FROM_DEVICE);
277 }
278
279
280 /*
281 * kernel scans the channels from 0 to <= max_channel
282 */
283 adapter->host->max_channel =
284 adapter->product_info.nchannels + NVIRT_CHAN -1;
285
286 adapter->host->max_id = 16; /* max targets per channel */
287
288 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */
289
290 adapter->host->cmd_per_lun = max_cmd_per_lun;
291
292 adapter->numldrv = inquiry3->num_ldrv;
293
294 adapter->max_cmds = adapter->product_info.max_commands;
295
296 if(adapter->max_cmds > MAX_COMMANDS)
297 adapter->max_cmds = MAX_COMMANDS;
298
299 adapter->host->can_queue = adapter->max_cmds - 1;
300
301 /*
302 * Get the maximum number of scatter-gather elements supported by this
303 * firmware
304 */
305 mega_get_max_sgl(adapter);
306
307 adapter->host->sg_tablesize = adapter->sglen;
308
309 /* use HP firmware and bios version encoding
310 Note: fw_version[0|1] and bios_version[0|1] were originally shifted
311 right 8 bits making them zero. This 0 value was hardcoded to fix
312 sparse warnings. */
313 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {
314 snprintf(adapter->fw_version, sizeof(adapter->fw_version),
315 "%c%d%d.%d%d",
316 adapter->product_info.fw_version[2],
317 0,
318 adapter->product_info.fw_version[1] & 0x0f,
319 0,
320 adapter->product_info.fw_version[0] & 0x0f);
321 snprintf(adapter->bios_version, sizeof(adapter->fw_version),
322 "%c%d%d.%d%d",
323 adapter->product_info.bios_version[2],
324 0,
325 adapter->product_info.bios_version[1] & 0x0f,
326 0,
327 adapter->product_info.bios_version[0] & 0x0f);
328 } else {
329 memcpy(adapter->fw_version,
330 (char *)adapter->product_info.fw_version, 4);
331 adapter->fw_version[4] = 0;
332
333 memcpy(adapter->bios_version,
334 (char *)adapter->product_info.bios_version, 4);
335
336 adapter->bios_version[4] = 0;
337 }
338
339 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",
340 adapter->fw_version, adapter->bios_version, adapter->numldrv);
341
342 /*
343 * Do we support extended (>10 bytes) cdbs
344 */
345 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
346 if (adapter->support_ext_cdb)
347 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");
348
349
350 return 0;
351 }
352
353 /**
354 * mega_runpendq()
355 * @adapter: pointer to our soft state
356 *
357 * Runs through the list of pending requests.
358 */
359 static inline void
360 mega_runpendq(adapter_t *adapter)
361 {
362 if(!list_empty(&adapter->pending_list))
363 __mega_runpendq(adapter);
364 }
365
366 /*
367 * megaraid_queue()
368 * @scmd - Issue this scsi command
369 * @done - the callback hook into the scsi mid-layer
370 *
371 * The command queuing entry point for the mid-layer.
372 */
373 static int
374 megaraid_queue_lck(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
417 static DEF_SCSI_QCMD(megaraid_queue)
418
419 /**
420 * mega_allocate_scb()
421 * @adapter: pointer to our soft state
422 * @cmd: scsi command from the mid-layer
423 *
424 * Allocate a SCB structure. This is the central structure for controller
425 * commands.
426 */
427 static inline scb_t *
428 mega_allocate_scb(adapter_t *adapter, 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 */
459 static inline int
460 mega_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:
500 case WRITE_6:
501 case READ_10:
502 case WRITE_10:
503 ldrv_num += 0x80;
504 }
505
506 return ldrv_num;
507 }
508
509 /**
510 * mega_build_cmd()
511 * @adapter: pointer to our soft state
512 * @cmd: Prepare using this scsi command
513 * @busy: busy flag if no resources
514 *
515 * Prepares a command and scatter gather list for the controller. This routine
516 * also finds out if the commands is intended for a logical drive or a
517 * physical device and prepares the controller command accordingly.
518 *
519 * We also re-order the logical drives and physical devices based on their
520 * boot settings.
521 */
522 static scb_t *
523 mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy)
524 {
525 mega_passthru *pthru;
526 scb_t *scb;
527 mbox_t *mbox;
528 u32 seg;
529 char islogical;
530 int max_ldrv_num;
531 int channel = 0;
532 int target = 0;
533 int ldrv_num = 0; /* logical drive number */
534
535 /*
536 * We know what channels our logical drives are on - mega_find_card()
537 */
538 islogical = adapter->logdrv_chan[cmd->device->channel];
539
540 /*
541 * The theory: If physical drive is chosen for boot, all the physical
542 * devices are exported before the logical drives, otherwise physical
543 * devices are pushed after logical drives, in which case - Kernel sees
544 * the physical devices on virtual channel which is obviously converted
545 * to actual channel on the HBA.
546 */
547 if( adapter->boot_pdrv_enabled ) {
548 if( islogical ) {
549 /* logical channel */
550 channel = cmd->device->channel -
551 adapter->product_info.nchannels;
552 }
553 else {
554 /* this is physical channel */
555 channel = cmd->device->channel;
556 target = cmd->device->id;
557
558 /*
559 * boot from a physical disk, that disk needs to be
560 * exposed first IF both the channels are SCSI, then
561 * booting from the second channel is not allowed.
562 */
563 if( target == 0 ) {
564 target = adapter->boot_pdrv_tgt;
565 }
566 else if( target == adapter->boot_pdrv_tgt ) {
567 target = 0;
568 }
569 }
570 }
571 else {
572 if( islogical ) {
573 /* this is the logical channel */
574 channel = cmd->device->channel;
575 }
576 else {
577 /* physical channel */
578 channel = cmd->device->channel - NVIRT_CHAN;
579 target = cmd->device->id;
580 }
581 }
582
583
584 if(islogical) {
585
586 /* have just LUN 0 for each target on virtual channels */
587 if (cmd->device->lun) {
588 cmd->result = (DID_BAD_TARGET << 16);
589 cmd->scsi_done(cmd);
590 return NULL;
591 }
592
593 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
594
595
596 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
597 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
598
599 /*
600 * max_ldrv_num increases by 0x80 if some logical drive was
601 * deleted.
602 */
603 if(adapter->read_ldidmap)
604 max_ldrv_num += 0x80;
605
606 if(ldrv_num > max_ldrv_num ) {
607 cmd->result = (DID_BAD_TARGET << 16);
608 cmd->scsi_done(cmd);
609 return NULL;
610 }
611
612 }
613 else {
614 if( cmd->device->lun > 7) {
615 /*
616 * Do not support lun >7 for physically accessed
617 * devices
618 */
619 cmd->result = (DID_BAD_TARGET << 16);
620 cmd->scsi_done(cmd);
621 return NULL;
622 }
623 }
624
625 /*
626 *
627 * Logical drive commands
628 *
629 */
630 if(islogical) {
631 switch (cmd->cmnd[0]) {
632 case TEST_UNIT_READY:
633 #if MEGA_HAVE_CLUSTERING
634 /*
635 * Do we support clustering and is the support enabled
636 * If no, return success always
637 */
638 if( !adapter->has_cluster ) {
639 cmd->result = (DID_OK << 16);
640 cmd->scsi_done(cmd);
641 return NULL;
642 }
643
644 if(!(scb = mega_allocate_scb(adapter, cmd))) {
645 *busy = 1;
646 return NULL;
647 }
648
649 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
650 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
651 scb->raw_mbox[3] = ldrv_num;
652
653 scb->dma_direction = DMA_NONE;
654
655 return scb;
656 #else
657 cmd->result = (DID_OK << 16);
658 cmd->scsi_done(cmd);
659 return NULL;
660 #endif
661
662 case MODE_SENSE: {
663 char *buf;
664 struct scatterlist *sg;
665
666 sg = scsi_sglist(cmd);
667 buf = kmap_atomic(sg_page(sg)) + sg->offset;
668
669 memset(buf, 0, cmd->cmnd[4]);
670 kunmap_atomic(buf - sg->offset);
671
672 cmd->result = (DID_OK << 16);
673 cmd->scsi_done(cmd);
674 return NULL;
675 }
676
677 case READ_CAPACITY:
678 case INQUIRY:
679
680 if(!(adapter->flag & (1L << cmd->device->channel))) {
681
682 dev_notice(&adapter->dev->dev,
683 "scsi%d: scanning scsi channel %d "
684 "for logical drives\n",
685 adapter->host->host_no,
686 cmd->device->channel);
687
688 adapter->flag |= (1L << cmd->device->channel);
689 }
690
691 /* Allocate a SCB and initialize passthru */
692 if(!(scb = mega_allocate_scb(adapter, cmd))) {
693 *busy = 1;
694 return NULL;
695 }
696 pthru = scb->pthru;
697
698 mbox = (mbox_t *)scb->raw_mbox;
699 memset(mbox, 0, sizeof(scb->raw_mbox));
700 memset(pthru, 0, sizeof(mega_passthru));
701
702 pthru->timeout = 0;
703 pthru->ars = 1;
704 pthru->reqsenselen = 14;
705 pthru->islogical = 1;
706 pthru->logdrv = ldrv_num;
707 pthru->cdblen = cmd->cmd_len;
708 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
709
710 if( adapter->has_64bit_addr ) {
711 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
712 }
713 else {
714 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
715 }
716
717 scb->dma_direction = DMA_FROM_DEVICE;
718
719 pthru->numsgelements = mega_build_sglist(adapter, scb,
720 &pthru->dataxferaddr, &pthru->dataxferlen);
721
722 mbox->m_out.xferaddr = scb->pthru_dma_addr;
723
724 return scb;
725
726 case READ_6:
727 case WRITE_6:
728 case READ_10:
729 case WRITE_10:
730 case READ_12:
731 case WRITE_12:
732
733 /* Allocate a SCB and initialize mailbox */
734 if(!(scb = mega_allocate_scb(adapter, cmd))) {
735 *busy = 1;
736 return NULL;
737 }
738 mbox = (mbox_t *)scb->raw_mbox;
739
740 memset(mbox, 0, sizeof(scb->raw_mbox));
741 mbox->m_out.logdrv = ldrv_num;
742
743 /*
744 * A little hack: 2nd bit is zero for all scsi read
745 * commands and is set for all scsi write commands
746 */
747 if( adapter->has_64bit_addr ) {
748 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
749 MEGA_MBOXCMD_LWRITE64:
750 MEGA_MBOXCMD_LREAD64 ;
751 }
752 else {
753 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
754 MEGA_MBOXCMD_LWRITE:
755 MEGA_MBOXCMD_LREAD ;
756 }
757
758 /*
759 * 6-byte READ(0x08) or WRITE(0x0A) cdb
760 */
761 if( cmd->cmd_len == 6 ) {
762 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
763 mbox->m_out.lba =
764 ((u32)cmd->cmnd[1] << 16) |
765 ((u32)cmd->cmnd[2] << 8) |
766 (u32)cmd->cmnd[3];
767
768 mbox->m_out.lba &= 0x1FFFFF;
769
770 #if MEGA_HAVE_STATS
771 /*
772 * Take modulo 0x80, since the logical drive
773 * number increases by 0x80 when a logical
774 * drive was deleted
775 */
776 if (*cmd->cmnd == READ_6) {
777 adapter->nreads[ldrv_num%0x80]++;
778 adapter->nreadblocks[ldrv_num%0x80] +=
779 mbox->m_out.numsectors;
780 } else {
781 adapter->nwrites[ldrv_num%0x80]++;
782 adapter->nwriteblocks[ldrv_num%0x80] +=
783 mbox->m_out.numsectors;
784 }
785 #endif
786 }
787
788 /*
789 * 10-byte READ(0x28) or WRITE(0x2A) cdb
790 */
791 if( cmd->cmd_len == 10 ) {
792 mbox->m_out.numsectors =
793 (u32)cmd->cmnd[8] |
794 ((u32)cmd->cmnd[7] << 8);
795 mbox->m_out.lba =
796 ((u32)cmd->cmnd[2] << 24) |
797 ((u32)cmd->cmnd[3] << 16) |
798 ((u32)cmd->cmnd[4] << 8) |
799 (u32)cmd->cmnd[5];
800
801 #if MEGA_HAVE_STATS
802 if (*cmd->cmnd == READ_10) {
803 adapter->nreads[ldrv_num%0x80]++;
804 adapter->nreadblocks[ldrv_num%0x80] +=
805 mbox->m_out.numsectors;
806 } else {
807 adapter->nwrites[ldrv_num%0x80]++;
808 adapter->nwriteblocks[ldrv_num%0x80] +=
809 mbox->m_out.numsectors;
810 }
811 #endif
812 }
813
814 /*
815 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
816 */
817 if( cmd->cmd_len == 12 ) {
818 mbox->m_out.lba =
819 ((u32)cmd->cmnd[2] << 24) |
820 ((u32)cmd->cmnd[3] << 16) |
821 ((u32)cmd->cmnd[4] << 8) |
822 (u32)cmd->cmnd[5];
823
824 mbox->m_out.numsectors =
825 ((u32)cmd->cmnd[6] << 24) |
826 ((u32)cmd->cmnd[7] << 16) |
827 ((u32)cmd->cmnd[8] << 8) |
828 (u32)cmd->cmnd[9];
829
830 #if MEGA_HAVE_STATS
831 if (*cmd->cmnd == READ_12) {
832 adapter->nreads[ldrv_num%0x80]++;
833 adapter->nreadblocks[ldrv_num%0x80] +=
834 mbox->m_out.numsectors;
835 } else {
836 adapter->nwrites[ldrv_num%0x80]++;
837 adapter->nwriteblocks[ldrv_num%0x80] +=
838 mbox->m_out.numsectors;
839 }
840 #endif
841 }
842
843 /*
844 * If it is a read command
845 */
846 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
847 scb->dma_direction = DMA_FROM_DEVICE;
848 }
849 else {
850 scb->dma_direction = DMA_TO_DEVICE;
851 }
852
853 /* Calculate Scatter-Gather info */
854 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
855 (u32 *)&mbox->m_out.xferaddr, &seg);
856
857 return scb;
858
859 #if MEGA_HAVE_CLUSTERING
860 case RESERVE:
861 case RELEASE:
862
863 /*
864 * Do we support clustering and is the support enabled
865 */
866 if( ! adapter->has_cluster ) {
867
868 cmd->result = (DID_BAD_TARGET << 16);
869 cmd->scsi_done(cmd);
870 return NULL;
871 }
872
873 /* Allocate a SCB and initialize mailbox */
874 if(!(scb = mega_allocate_scb(adapter, cmd))) {
875 *busy = 1;
876 return NULL;
877 }
878
879 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
880 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
881 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
882
883 scb->raw_mbox[3] = ldrv_num;
884
885 scb->dma_direction = DMA_NONE;
886
887 return scb;
888 #endif
889
890 default:
891 cmd->result = (DID_BAD_TARGET << 16);
892 cmd->scsi_done(cmd);
893 return NULL;
894 }
895 }
896
897 /*
898 * Passthru drive commands
899 */
900 else {
901 /* Allocate a SCB and initialize passthru */
902 if(!(scb = mega_allocate_scb(adapter, cmd))) {
903 *busy = 1;
904 return NULL;
905 }
906
907 mbox = (mbox_t *)scb->raw_mbox;
908 memset(mbox, 0, sizeof(scb->raw_mbox));
909
910 if( adapter->support_ext_cdb ) {
911
912 mega_prepare_extpassthru(adapter, scb, cmd,
913 channel, target);
914
915 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
916
917 mbox->m_out.xferaddr = scb->epthru_dma_addr;
918
919 }
920 else {
921
922 pthru = mega_prepare_passthru(adapter, scb, cmd,
923 channel, target);
924
925 /* Initialize mailbox */
926 if( adapter->has_64bit_addr ) {
927 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
928 }
929 else {
930 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
931 }
932
933 mbox->m_out.xferaddr = scb->pthru_dma_addr;
934
935 }
936 return scb;
937 }
938 return NULL;
939 }
940
941
942 /**
943 * mega_prepare_passthru()
944 * @adapter: pointer to our soft state
945 * @scb: our scsi control block
946 * @cmd: scsi command from the mid-layer
947 * @channel: actual channel on the controller
948 * @target: actual id on the controller.
949 *
950 * prepare a command for the scsi physical devices.
951 */
952 static mega_passthru *
953 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,
954 int channel, int target)
955 {
956 mega_passthru *pthru;
957
958 pthru = scb->pthru;
959 memset(pthru, 0, sizeof (mega_passthru));
960
961 /* 0=6sec/1=60sec/2=10min/3=3hrs */
962 pthru->timeout = 2;
963
964 pthru->ars = 1;
965 pthru->reqsenselen = 14;
966 pthru->islogical = 0;
967
968 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
969
970 pthru->target = (adapter->flag & BOARD_40LD) ?
971 (channel << 4) | target : target;
972
973 pthru->cdblen = cmd->cmd_len;
974 pthru->logdrv = cmd->device->lun;
975
976 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
977
978 /* Not sure about the direction */
979 scb->dma_direction = DMA_BIDIRECTIONAL;
980
981 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
982 switch (cmd->cmnd[0]) {
983 case INQUIRY:
984 case READ_CAPACITY:
985 if(!(adapter->flag & (1L << cmd->device->channel))) {
986
987 dev_notice(&adapter->dev->dev,
988 "scsi%d: scanning scsi channel %d [P%d] "
989 "for physical devices\n",
990 adapter->host->host_no,
991 cmd->device->channel, channel);
992
993 adapter->flag |= (1L << cmd->device->channel);
994 }
995 fallthrough;
996 default:
997 pthru->numsgelements = mega_build_sglist(adapter, scb,
998 &pthru->dataxferaddr, &pthru->dataxferlen);
999 break;
1000 }
1001 return pthru;
1002 }
1003
1004
1005 /**
1006 * mega_prepare_extpassthru()
1007 * @adapter: pointer to our soft state
1008 * @scb: our scsi control block
1009 * @cmd: scsi command from the mid-layer
1010 * @channel: actual channel on the controller
1011 * @target: actual id on the controller.
1012 *
1013 * prepare a command for the scsi physical devices. This rountine prepares
1014 * commands for devices which can take extended CDBs (>10 bytes)
1015 */
1016 static mega_ext_passthru *
1017 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,
1018 struct scsi_cmnd *cmd,
1019 int channel, int target)
1020 {
1021 mega_ext_passthru *epthru;
1022
1023 epthru = scb->epthru;
1024 memset(epthru, 0, sizeof(mega_ext_passthru));
1025
1026 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1027 epthru->timeout = 2;
1028
1029 epthru->ars = 1;
1030 epthru->reqsenselen = 14;
1031 epthru->islogical = 0;
1032
1033 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1034 epthru->target = (adapter->flag & BOARD_40LD) ?
1035 (channel << 4) | target : target;
1036
1037 epthru->cdblen = cmd->cmd_len;
1038 epthru->logdrv = cmd->device->lun;
1039
1040 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1041
1042 /* Not sure about the direction */
1043 scb->dma_direction = DMA_BIDIRECTIONAL;
1044
1045 switch(cmd->cmnd[0]) {
1046 case INQUIRY:
1047 case READ_CAPACITY:
1048 if(!(adapter->flag & (1L << cmd->device->channel))) {
1049
1050 dev_notice(&adapter->dev->dev,
1051 "scsi%d: scanning scsi channel %d [P%d] "
1052 "for physical devices\n",
1053 adapter->host->host_no,
1054 cmd->device->channel, channel);
1055
1056 adapter->flag |= (1L << cmd->device->channel);
1057 }
1058 fallthrough;
1059 default:
1060 epthru->numsgelements = mega_build_sglist(adapter, scb,
1061 &epthru->dataxferaddr, &epthru->dataxferlen);
1062 break;
1063 }
1064
1065 return epthru;
1066 }
1067
1068 static void
1069 __mega_runpendq(adapter_t *adapter)
1070 {
1071 scb_t *scb;
1072 struct list_head *pos, *next;
1073
1074 /* Issue any pending commands to the card */
1075 list_for_each_safe(pos, next, &adapter->pending_list) {
1076
1077 scb = list_entry(pos, scb_t, list);
1078
1079 if( !(scb->state & SCB_ISSUED) ) {
1080
1081 if( issue_scb(adapter, scb) != 0 )
1082 return;
1083 }
1084 }
1085
1086 return;
1087 }
1088
1089
1090 /**
1091 * issue_scb()
1092 * @adapter: pointer to our soft state
1093 * @scb: scsi control block
1094 *
1095 * Post a command to the card if the mailbox is available, otherwise return
1096 * busy. We also take the scb from the pending list if the mailbox is
1097 * available.
1098 */
1099 static int
1100 issue_scb(adapter_t *adapter, scb_t *scb)
1101 {
1102 volatile mbox64_t *mbox64 = adapter->mbox64;
1103 volatile mbox_t *mbox = adapter->mbox;
1104 unsigned int i = 0;
1105
1106 if(unlikely(mbox->m_in.busy)) {
1107 do {
1108 udelay(1);
1109 i++;
1110 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1111
1112 if(mbox->m_in.busy) return -1;
1113 }
1114
1115 /* Copy mailbox data into host structure */
1116 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1117 sizeof(struct mbox_out));
1118
1119 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1120 mbox->m_in.busy = 1; /* Set busy */
1121
1122
1123 /*
1124 * Increment the pending queue counter
1125 */
1126 atomic_inc(&adapter->pend_cmds);
1127
1128 switch (mbox->m_out.cmd) {
1129 case MEGA_MBOXCMD_LREAD64:
1130 case MEGA_MBOXCMD_LWRITE64:
1131 case MEGA_MBOXCMD_PASSTHRU64:
1132 case MEGA_MBOXCMD_EXTPTHRU:
1133 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1134 mbox64->xfer_segment_hi = 0;
1135 mbox->m_out.xferaddr = 0xFFFFFFFF;
1136 break;
1137 default:
1138 mbox64->xfer_segment_lo = 0;
1139 mbox64->xfer_segment_hi = 0;
1140 }
1141
1142 /*
1143 * post the command
1144 */
1145 scb->state |= SCB_ISSUED;
1146
1147 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1148 mbox->m_in.poll = 0;
1149 mbox->m_in.ack = 0;
1150 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1151 }
1152 else {
1153 irq_enable(adapter);
1154 issue_command(adapter);
1155 }
1156
1157 return 0;
1158 }
1159
1160 /*
1161 * Wait until the controller's mailbox is available
1162 */
1163 static inline int
1164 mega_busywait_mbox (adapter_t *adapter)
1165 {
1166 if (adapter->mbox->m_in.busy)
1167 return __mega_busywait_mbox(adapter);
1168 return 0;
1169 }
1170
1171 /**
1172 * issue_scb_block()
1173 * @adapter: pointer to our soft state
1174 * @raw_mbox: the mailbox
1175 *
1176 * Issue a scb in synchronous and non-interrupt mode
1177 */
1178 static int
1179 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1180 {
1181 volatile mbox64_t *mbox64 = adapter->mbox64;
1182 volatile mbox_t *mbox = adapter->mbox;
1183 u8 byte;
1184
1185 /* Wait until mailbox is free */
1186 if(mega_busywait_mbox (adapter))
1187 goto bug_blocked_mailbox;
1188
1189 /* Copy mailbox data into host structure */
1190 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1191 mbox->m_out.cmdid = 0xFE;
1192 mbox->m_in.busy = 1;
1193
1194 switch (raw_mbox[0]) {
1195 case MEGA_MBOXCMD_LREAD64:
1196 case MEGA_MBOXCMD_LWRITE64:
1197 case MEGA_MBOXCMD_PASSTHRU64:
1198 case MEGA_MBOXCMD_EXTPTHRU:
1199 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1200 mbox64->xfer_segment_hi = 0;
1201 mbox->m_out.xferaddr = 0xFFFFFFFF;
1202 break;
1203 default:
1204 mbox64->xfer_segment_lo = 0;
1205 mbox64->xfer_segment_hi = 0;
1206 }
1207
1208 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1209 mbox->m_in.poll = 0;
1210 mbox->m_in.ack = 0;
1211 mbox->m_in.numstatus = 0xFF;
1212 mbox->m_in.status = 0xFF;
1213 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1214
1215 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1216 cpu_relax();
1217
1218 mbox->m_in.numstatus = 0xFF;
1219
1220 while( (volatile u8)mbox->m_in.poll != 0x77 )
1221 cpu_relax();
1222
1223 mbox->m_in.poll = 0;
1224 mbox->m_in.ack = 0x77;
1225
1226 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1227
1228 while(RDINDOOR(adapter) & 0x2)
1229 cpu_relax();
1230 }
1231 else {
1232 irq_disable(adapter);
1233 issue_command(adapter);
1234
1235 while (!((byte = irq_state(adapter)) & INTR_VALID))
1236 cpu_relax();
1237
1238 set_irq_state(adapter, byte);
1239 irq_enable(adapter);
1240 irq_ack(adapter);
1241 }
1242
1243 return mbox->m_in.status;
1244
1245 bug_blocked_mailbox:
1246 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");
1247 udelay (1000);
1248 return -1;
1249 }
1250
1251
1252 /**
1253 * megaraid_isr_iomapped()
1254 * @irq: irq
1255 * @devp: pointer to our soft state
1256 *
1257 * Interrupt service routine for io-mapped controllers.
1258 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1259 * and service the completed commands.
1260 */
1261 static irqreturn_t
1262 megaraid_isr_iomapped(int irq, void *devp)
1263 {
1264 adapter_t *adapter = devp;
1265 unsigned long flags;
1266 u8 status;
1267 u8 nstatus;
1268 u8 completed[MAX_FIRMWARE_STATUS];
1269 u8 byte;
1270 int handled = 0;
1271
1272
1273 /*
1274 * loop till F/W has more commands for us to complete.
1275 */
1276 spin_lock_irqsave(&adapter->lock, flags);
1277
1278 do {
1279 /* Check if a valid interrupt is pending */
1280 byte = irq_state(adapter);
1281 if( (byte & VALID_INTR_BYTE) == 0 ) {
1282 /*
1283 * No more pending commands
1284 */
1285 goto out_unlock;
1286 }
1287 set_irq_state(adapter, byte);
1288
1289 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1290 == 0xFF)
1291 cpu_relax();
1292 adapter->mbox->m_in.numstatus = 0xFF;
1293
1294 status = adapter->mbox->m_in.status;
1295
1296 /*
1297 * decrement the pending queue counter
1298 */
1299 atomic_sub(nstatus, &adapter->pend_cmds);
1300
1301 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1302 nstatus);
1303
1304 /* Acknowledge interrupt */
1305 irq_ack(adapter);
1306
1307 mega_cmd_done(adapter, completed, nstatus, status);
1308
1309 mega_rundoneq(adapter);
1310
1311 handled = 1;
1312
1313 /* Loop through any pending requests */
1314 if(atomic_read(&adapter->quiescent) == 0) {
1315 mega_runpendq(adapter);
1316 }
1317
1318 } while(1);
1319
1320 out_unlock:
1321
1322 spin_unlock_irqrestore(&adapter->lock, flags);
1323
1324 return IRQ_RETVAL(handled);
1325 }
1326
1327
1328 /**
1329 * megaraid_isr_memmapped()
1330 * @irq: irq
1331 * @devp: pointer to our soft state
1332 *
1333 * Interrupt service routine for memory-mapped controllers.
1334 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1335 * and service the completed commands.
1336 */
1337 static irqreturn_t
1338 megaraid_isr_memmapped(int irq, void *devp)
1339 {
1340 adapter_t *adapter = devp;
1341 unsigned long flags;
1342 u8 status;
1343 u32 dword = 0;
1344 u8 nstatus;
1345 u8 completed[MAX_FIRMWARE_STATUS];
1346 int handled = 0;
1347
1348
1349 /*
1350 * loop till F/W has more commands for us to complete.
1351 */
1352 spin_lock_irqsave(&adapter->lock, flags);
1353
1354 do {
1355 /* Check if a valid interrupt is pending */
1356 dword = RDOUTDOOR(adapter);
1357 if(dword != 0x10001234) {
1358 /*
1359 * No more pending commands
1360 */
1361 goto out_unlock;
1362 }
1363 WROUTDOOR(adapter, 0x10001234);
1364
1365 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1366 == 0xFF) {
1367 cpu_relax();
1368 }
1369 adapter->mbox->m_in.numstatus = 0xFF;
1370
1371 status = adapter->mbox->m_in.status;
1372
1373 /*
1374 * decrement the pending queue counter
1375 */
1376 atomic_sub(nstatus, &adapter->pend_cmds);
1377
1378 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1379 nstatus);
1380
1381 /* Acknowledge interrupt */
1382 WRINDOOR(adapter, 0x2);
1383
1384 handled = 1;
1385
1386 while( RDINDOOR(adapter) & 0x02 )
1387 cpu_relax();
1388
1389 mega_cmd_done(adapter, completed, nstatus, status);
1390
1391 mega_rundoneq(adapter);
1392
1393 /* Loop through any pending requests */
1394 if(atomic_read(&adapter->quiescent) == 0) {
1395 mega_runpendq(adapter);
1396 }
1397
1398 } while(1);
1399
1400 out_unlock:
1401
1402 spin_unlock_irqrestore(&adapter->lock, flags);
1403
1404 return IRQ_RETVAL(handled);
1405 }
1406 /**
1407 * mega_cmd_done()
1408 * @adapter: pointer to our soft state
1409 * @completed: array of ids of completed commands
1410 * @nstatus: number of completed commands
1411 * @status: status of the last command completed
1412 *
1413 * Complete the commands and call the scsi mid-layer callback hooks.
1414 */
1415 static void
1416 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1417 {
1418 mega_ext_passthru *epthru = NULL;
1419 struct scatterlist *sgl;
1420 struct scsi_cmnd *cmd = NULL;
1421 mega_passthru *pthru = NULL;
1422 mbox_t *mbox = NULL;
1423 u8 c;
1424 scb_t *scb;
1425 int islogical;
1426 int cmdid;
1427 int i;
1428
1429 /*
1430 * for all the commands completed, call the mid-layer callback routine
1431 * and free the scb.
1432 */
1433 for( i = 0; i < nstatus; i++ ) {
1434
1435 cmdid = completed[i];
1436
1437 /*
1438 * Only free SCBs for the commands coming down from the
1439 * mid-layer, not for which were issued internally
1440 *
1441 * For internal command, restore the status returned by the
1442 * firmware so that user can interpret it.
1443 */
1444 if (cmdid == CMDID_INT_CMDS) {
1445 scb = &adapter->int_scb;
1446
1447 list_del_init(&scb->list);
1448 scb->state = SCB_FREE;
1449
1450 adapter->int_status = status;
1451 complete(&adapter->int_waitq);
1452 } else {
1453 scb = &adapter->scb_list[cmdid];
1454
1455 /*
1456 * Make sure f/w has completed a valid command
1457 */
1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 dev_crit(&adapter->dev->dev, "invalid command "
1460 "Id %d, scb->state:%x, scsi cmd:%p\n",
1461 cmdid, scb->state, scb->cmd);
1462
1463 continue;
1464 }
1465
1466 /*
1467 * Was a abort issued for this command
1468 */
1469 if( scb->state & SCB_ABORT ) {
1470
1471 dev_warn(&adapter->dev->dev,
1472 "aborted cmd [%x] complete\n",
1473 scb->idx);
1474
1475 scb->cmd->result = (DID_ABORT << 16);
1476
1477 list_add_tail(SCSI_LIST(scb->cmd),
1478 &adapter->completed_list);
1479
1480 mega_free_scb(adapter, scb);
1481
1482 continue;
1483 }
1484
1485 /*
1486 * Was a reset issued for this command
1487 */
1488 if( scb->state & SCB_RESET ) {
1489
1490 dev_warn(&adapter->dev->dev,
1491 "reset cmd [%x] complete\n",
1492 scb->idx);
1493
1494 scb->cmd->result = (DID_RESET << 16);
1495
1496 list_add_tail(SCSI_LIST(scb->cmd),
1497 &adapter->completed_list);
1498
1499 mega_free_scb (adapter, scb);
1500
1501 continue;
1502 }
1503
1504 cmd = scb->cmd;
1505 pthru = scb->pthru;
1506 epthru = scb->epthru;
1507 mbox = (mbox_t *)scb->raw_mbox;
1508
1509 #if MEGA_HAVE_STATS
1510 {
1511
1512 int logdrv = mbox->m_out.logdrv;
1513
1514 islogical = adapter->logdrv_chan[cmd->channel];
1515 /*
1516 * Maintain an error counter for the logical drive.
1517 * Some application like SNMP agent need such
1518 * statistics
1519 */
1520 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1521 cmd->cmnd[0] == READ_10 ||
1522 cmd->cmnd[0] == READ_12)) {
1523 /*
1524 * Logical drive number increases by 0x80 when
1525 * a logical drive is deleted
1526 */
1527 adapter->rd_errors[logdrv%0x80]++;
1528 }
1529
1530 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1531 cmd->cmnd[0] == WRITE_10 ||
1532 cmd->cmnd[0] == WRITE_12)) {
1533 /*
1534 * Logical drive number increases by 0x80 when
1535 * a logical drive is deleted
1536 */
1537 adapter->wr_errors[logdrv%0x80]++;
1538 }
1539
1540 }
1541 #endif
1542 }
1543
1544 /*
1545 * Do not return the presence of hard disk on the channel so,
1546 * inquiry sent, and returned data==hard disk or removable
1547 * hard disk and not logical, request should return failure! -
1548 * PJ
1549 */
1550 islogical = adapter->logdrv_chan[cmd->device->channel];
1551 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1552
1553 sgl = scsi_sglist(cmd);
1554 if( sg_page(sgl) ) {
1555 c = *(unsigned char *) sg_virt(&sgl[0]);
1556 } else {
1557 dev_warn(&adapter->dev->dev, "invalid sg\n");
1558 c = 0;
1559 }
1560
1561 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1562 ((c & 0x1F ) == TYPE_DISK)) {
1563 status = 0xF0;
1564 }
1565 }
1566
1567 /* clear result; otherwise, success returns corrupt value */
1568 cmd->result = 0;
1569
1570 /* Convert MegaRAID status to Linux error code */
1571 switch (status) {
1572 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1573 cmd->result |= (DID_OK << 16);
1574 break;
1575
1576 case 0x02: /* ERROR_ABORTED, i.e.
1577 SCSI_STATUS_CHECK_CONDITION */
1578
1579 /* set sense_buffer and result fields */
1580 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1581 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1582
1583 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1584 14);
1585
1586 cmd->result = (DRIVER_SENSE << 24) |
1587 (DID_OK << 16) |
1588 (CHECK_CONDITION << 1);
1589 }
1590 else {
1591 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1592
1593 memcpy(cmd->sense_buffer,
1594 epthru->reqsensearea, 14);
1595
1596 cmd->result = (DRIVER_SENSE << 24) |
1597 (DID_OK << 16) |
1598 (CHECK_CONDITION << 1);
1599 } else {
1600 cmd->sense_buffer[0] = 0x70;
1601 cmd->sense_buffer[2] = ABORTED_COMMAND;
1602 cmd->result |= (CHECK_CONDITION << 1);
1603 }
1604 }
1605 break;
1606
1607 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1608 SCSI_STATUS_BUSY */
1609 cmd->result |= (DID_BUS_BUSY << 16) | status;
1610 break;
1611
1612 default:
1613 #if MEGA_HAVE_CLUSTERING
1614 /*
1615 * If TEST_UNIT_READY fails, we know
1616 * MEGA_RESERVATION_STATUS failed
1617 */
1618 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1619 cmd->result |= (DID_ERROR << 16) |
1620 (RESERVATION_CONFLICT << 1);
1621 }
1622 else
1623 /*
1624 * Error code returned is 1 if Reserve or Release
1625 * failed or the input parameter is invalid
1626 */
1627 if( status == 1 &&
1628 (cmd->cmnd[0] == RESERVE ||
1629 cmd->cmnd[0] == RELEASE) ) {
1630
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635 #endif
1636 cmd->result |= (DID_BAD_TARGET << 16)|status;
1637 }
1638
1639 mega_free_scb(adapter, scb);
1640
1641 /* Add Scsi_Command to end of completed queue */
1642 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1643 }
1644 }
1645
1646
1647 /*
1648 * mega_runpendq()
1649 *
1650 * Run through the list of completed requests and finish it
1651 */
1652 static void
1653 mega_rundoneq (adapter_t *adapter)
1654 {
1655 struct scsi_cmnd *cmd;
1656 struct list_head *pos;
1657
1658 list_for_each(pos, &adapter->completed_list) {
1659
1660 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1661
1662 cmd = list_entry(spos, struct scsi_cmnd, SCp);
1663 cmd->scsi_done(cmd);
1664 }
1665
1666 INIT_LIST_HEAD(&adapter->completed_list);
1667 }
1668
1669
1670 /*
1671 * Free a SCB structure
1672 * Note: We assume the scsi commands associated with this scb is not free yet.
1673 */
1674 static void
1675 mega_free_scb(adapter_t *adapter, scb_t *scb)
1676 {
1677 switch( scb->dma_type ) {
1678
1679 case MEGA_DMA_TYPE_NONE:
1680 break;
1681
1682 case MEGA_SGLIST:
1683 scsi_dma_unmap(scb->cmd);
1684 break;
1685 default:
1686 break;
1687 }
1688
1689 /*
1690 * Remove from the pending list
1691 */
1692 list_del_init(&scb->list);
1693
1694 /* Link the scb back into free list */
1695 scb->state = SCB_FREE;
1696 scb->cmd = NULL;
1697
1698 list_add(&scb->list, &adapter->free_list);
1699 }
1700
1701
1702 static int
1703 __mega_busywait_mbox (adapter_t *adapter)
1704 {
1705 volatile mbox_t *mbox = adapter->mbox;
1706 long counter;
1707
1708 for (counter = 0; counter < 10000; counter++) {
1709 if (!mbox->m_in.busy)
1710 return 0;
1711 udelay(100);
1712 cond_resched();
1713 }
1714 return -1; /* give up after 1 second */
1715 }
1716
1717 /*
1718 * Copies data to SGLIST
1719 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1720 */
1721 static int
1722 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1723 {
1724 struct scatterlist *sg;
1725 struct scsi_cmnd *cmd;
1726 int sgcnt;
1727 int idx;
1728
1729 cmd = scb->cmd;
1730
1731 /*
1732 * Copy Scatter-Gather list info into controller structure.
1733 *
1734 * The number of sg elements returned must not exceed our limit
1735 */
1736 sgcnt = scsi_dma_map(cmd);
1737
1738 scb->dma_type = MEGA_SGLIST;
1739
1740 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1741
1742 *len = 0;
1743
1744 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1745 sg = scsi_sglist(cmd);
1746 scb->dma_h_bulkdata = sg_dma_address(sg);
1747 *buf = (u32)scb->dma_h_bulkdata;
1748 *len = sg_dma_len(sg);
1749 return 0;
1750 }
1751
1752 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1753 if (adapter->has_64bit_addr) {
1754 scb->sgl64[idx].address = sg_dma_address(sg);
1755 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1756 } else {
1757 scb->sgl[idx].address = sg_dma_address(sg);
1758 *len += scb->sgl[idx].length = sg_dma_len(sg);
1759 }
1760 }
1761
1762 /* Reset pointer and length fields */
1763 *buf = scb->sgl_dma_addr;
1764
1765 /* Return count of SG requests */
1766 return sgcnt;
1767 }
1768
1769
1770 /*
1771 * mega_8_to_40ld()
1772 *
1773 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1774 * Enquiry3 structures for later use
1775 */
1776 static void
1777 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1778 mega_product_info *product_info)
1779 {
1780 int i;
1781
1782 product_info->max_commands = inquiry->adapter_info.max_commands;
1783 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1784 product_info->nchannels = inquiry->adapter_info.nchannels;
1785
1786 for (i = 0; i < 4; i++) {
1787 product_info->fw_version[i] =
1788 inquiry->adapter_info.fw_version[i];
1789
1790 product_info->bios_version[i] =
1791 inquiry->adapter_info.bios_version[i];
1792 }
1793 enquiry3->cache_flush_interval =
1794 inquiry->adapter_info.cache_flush_interval;
1795
1796 product_info->dram_size = inquiry->adapter_info.dram_size;
1797
1798 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1799
1800 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1801 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1802 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1803 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1804 }
1805
1806 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1807 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1808 }
1809
1810 static inline void
1811 mega_free_sgl(adapter_t *adapter)
1812 {
1813 scb_t *scb;
1814 int i;
1815
1816 for(i = 0; i < adapter->max_cmds; i++) {
1817
1818 scb = &adapter->scb_list[i];
1819
1820 if( scb->sgl64 ) {
1821 dma_free_coherent(&adapter->dev->dev,
1822 sizeof(mega_sgl64) * adapter->sglen,
1823 scb->sgl64, scb->sgl_dma_addr);
1824
1825 scb->sgl64 = NULL;
1826 }
1827
1828 if( scb->pthru ) {
1829 dma_free_coherent(&adapter->dev->dev,
1830 sizeof(mega_passthru), scb->pthru,
1831 scb->pthru_dma_addr);
1832
1833 scb->pthru = NULL;
1834 }
1835
1836 if( scb->epthru ) {
1837 dma_free_coherent(&adapter->dev->dev,
1838 sizeof(mega_ext_passthru),
1839 scb->epthru, scb->epthru_dma_addr);
1840
1841 scb->epthru = NULL;
1842 }
1843
1844 }
1845 }
1846
1847
1848 /*
1849 * Get information about the card/driver
1850 */
1851 const char *
1852 megaraid_info(struct Scsi_Host *host)
1853 {
1854 static char buffer[512];
1855 adapter_t *adapter;
1856
1857 adapter = (adapter_t *)host->hostdata;
1858
1859 sprintf (buffer,
1860 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1861 adapter->fw_version, adapter->product_info.max_commands,
1862 adapter->host->max_id, adapter->host->max_channel,
1863 (u32)adapter->host->max_lun);
1864 return buffer;
1865 }
1866
1867 /*
1868 * Abort a previous SCSI request. Only commands on the pending list can be
1869 * aborted. All the commands issued to the F/W must complete.
1870 */
1871 static int
1872 megaraid_abort(struct scsi_cmnd *cmd)
1873 {
1874 adapter_t *adapter;
1875 int rval;
1876
1877 adapter = (adapter_t *)cmd->device->host->hostdata;
1878
1879 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1880
1881 /*
1882 * This is required here to complete any completed requests
1883 * to be communicated over to the mid layer.
1884 */
1885 mega_rundoneq(adapter);
1886
1887 return rval;
1888 }
1889
1890
1891 static int
1892 megaraid_reset(struct scsi_cmnd *cmd)
1893 {
1894 adapter_t *adapter;
1895 megacmd_t mc;
1896 int rval;
1897
1898 adapter = (adapter_t *)cmd->device->host->hostdata;
1899
1900 #if MEGA_HAVE_CLUSTERING
1901 mc.cmd = MEGA_CLUSTER_CMD;
1902 mc.opcode = MEGA_RESET_RESERVATIONS;
1903
1904 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1905 dev_warn(&adapter->dev->dev, "reservation reset failed\n");
1906 }
1907 else {
1908 dev_info(&adapter->dev->dev, "reservation reset\n");
1909 }
1910 #endif
1911
1912 spin_lock_irq(&adapter->lock);
1913
1914 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1915
1916 /*
1917 * This is required here to complete any completed requests
1918 * to be communicated over to the mid layer.
1919 */
1920 mega_rundoneq(adapter);
1921 spin_unlock_irq(&adapter->lock);
1922
1923 return rval;
1924 }
1925
1926 /**
1927 * megaraid_abort_and_reset()
1928 * @adapter: megaraid soft state
1929 * @cmd: scsi command to be aborted or reset
1930 * @aor: abort or reset flag
1931 *
1932 * Try to locate the scsi command in the pending queue. If found and is not
1933 * issued to the controller, abort/reset it. Otherwise return failure
1934 */
1935 static int
1936 megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor)
1937 {
1938 struct list_head *pos, *next;
1939 scb_t *scb;
1940
1941 dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n",
1942 (aor == SCB_ABORT)? "ABORTING":"RESET",
1943 cmd->cmnd[0], cmd->device->channel,
1944 cmd->device->id, (u32)cmd->device->lun);
1945
1946 if(list_empty(&adapter->pending_list))
1947 return FAILED;
1948
1949 list_for_each_safe(pos, next, &adapter->pending_list) {
1950
1951 scb = list_entry(pos, scb_t, list);
1952
1953 if (scb->cmd == cmd) { /* Found command */
1954
1955 scb->state |= aor;
1956
1957 /*
1958 * Check if this command has firmware ownership. If
1959 * yes, we cannot reset this command. Whenever f/w
1960 * completes this command, we will return appropriate
1961 * status from ISR.
1962 */
1963 if( scb->state & SCB_ISSUED ) {
1964
1965 dev_warn(&adapter->dev->dev,
1966 "%s[%x], fw owner\n",
1967 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1968 scb->idx);
1969
1970 return FAILED;
1971 }
1972 else {
1973
1974 /*
1975 * Not yet issued! Remove from the pending
1976 * list
1977 */
1978 dev_warn(&adapter->dev->dev,
1979 "%s-[%x], driver owner\n",
1980 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1981 scb->idx);
1982
1983 mega_free_scb(adapter, scb);
1984
1985 if( aor == SCB_ABORT ) {
1986 cmd->result = (DID_ABORT << 16);
1987 }
1988 else {
1989 cmd->result = (DID_RESET << 16);
1990 }
1991
1992 list_add_tail(SCSI_LIST(cmd),
1993 &adapter->completed_list);
1994
1995 return SUCCESS;
1996 }
1997 }
1998 }
1999
2000 return FAILED;
2001 }
2002
2003 static inline int
2004 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2005 {
2006 *pdev = pci_alloc_dev(NULL);
2007
2008 if( *pdev == NULL ) return -1;
2009
2010 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2011
2012 if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) {
2013 kfree(*pdev);
2014 return -1;
2015 }
2016
2017 return 0;
2018 }
2019
2020 static inline void
2021 free_local_pdev(struct pci_dev *pdev)
2022 {
2023 kfree(pdev);
2024 }
2025
2026 /**
2027 * mega_allocate_inquiry()
2028 * @dma_handle: handle returned for dma address
2029 * @pdev: handle to pci device
2030 *
2031 * allocates memory for inquiry structure
2032 */
2033 static inline void *
2034 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2035 {
2036 return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3),
2037 dma_handle, GFP_KERNEL);
2038 }
2039
2040
2041 static inline void
2042 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2043 {
2044 dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry,
2045 dma_handle);
2046 }
2047
2048
2049 #ifdef CONFIG_PROC_FS
2050 /* Following code handles /proc fs */
2051
2052 /**
2053 * proc_show_config()
2054 * @m: Synthetic file construction data
2055 * @v: File iterator
2056 *
2057 * Display configuration information about the controller.
2058 */
2059 static int
2060 proc_show_config(struct seq_file *m, void *v)
2061 {
2062
2063 adapter_t *adapter = m->private;
2064
2065 seq_puts(m, MEGARAID_VERSION);
2066 if(adapter->product_info.product_name[0])
2067 seq_printf(m, "%s\n", adapter->product_info.product_name);
2068
2069 seq_puts(m, "Controller Type: ");
2070
2071 if( adapter->flag & BOARD_MEMMAP )
2072 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");
2073 else
2074 seq_puts(m, "418/428/434\n");
2075
2076 if(adapter->flag & BOARD_40LD)
2077 seq_puts(m, "Controller Supports 40 Logical Drives\n");
2078
2079 if(adapter->flag & BOARD_64BIT)
2080 seq_puts(m, "Controller capable of 64-bit memory addressing\n");
2081 if( adapter->has_64bit_addr )
2082 seq_puts(m, "Controller using 64-bit memory addressing\n");
2083 else
2084 seq_puts(m, "Controller is not using 64-bit memory addressing\n");
2085
2086 seq_printf(m, "Base = %08lx, Irq = %d, ",
2087 adapter->base, adapter->host->irq);
2088
2089 seq_printf(m, "Logical Drives = %d, Channels = %d\n",
2090 adapter->numldrv, adapter->product_info.nchannels);
2091
2092 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",
2093 adapter->fw_version, adapter->bios_version,
2094 adapter->product_info.dram_size);
2095
2096 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2097 adapter->product_info.max_commands, adapter->max_cmds);
2098
2099 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);
2100 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);
2101 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);
2102 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);
2103 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);
2104 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);
2105 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);
2106 seq_printf(m, "quiescent = %d\n",
2107 atomic_read(&adapter->quiescent));
2108 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);
2109
2110 seq_puts(m, "\nModule Parameters:\n");
2111 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);
2112 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);
2113 return 0;
2114 }
2115
2116 /**
2117 * proc_show_stat()
2118 * @m: Synthetic file construction data
2119 * @v: File iterator
2120 *
2121 * Display statistical information about the I/O activity.
2122 */
2123 static int
2124 proc_show_stat(struct seq_file *m, void *v)
2125 {
2126 adapter_t *adapter = m->private;
2127 #if MEGA_HAVE_STATS
2128 int i;
2129 #endif
2130
2131 seq_puts(m, "Statistical Information for this controller\n");
2132 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));
2133 #if MEGA_HAVE_STATS
2134 for(i = 0; i < adapter->numldrv; i++) {
2135 seq_printf(m, "Logical Drive %d:\n", i);
2136 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",
2137 adapter->nreads[i], adapter->nwrites[i]);
2138 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",
2139 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2140 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",
2141 adapter->rd_errors[i], adapter->wr_errors[i]);
2142 }
2143 #else
2144 seq_puts(m, "IO and error counters not compiled in driver.\n");
2145 #endif
2146 return 0;
2147 }
2148
2149
2150 /**
2151 * proc_show_mbox()
2152 * @m: Synthetic file construction data
2153 * @v: File iterator
2154 *
2155 * Display mailbox information for the last command issued. This information
2156 * is good for debugging.
2157 */
2158 static int
2159 proc_show_mbox(struct seq_file *m, void *v)
2160 {
2161 adapter_t *adapter = m->private;
2162 volatile mbox_t *mbox = adapter->mbox;
2163
2164 seq_puts(m, "Contents of Mail Box Structure\n");
2165 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);
2166 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);
2167 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);
2168 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);
2169 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);
2170 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);
2171 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);
2172 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);
2173 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);
2174 return 0;
2175 }
2176
2177
2178 /**
2179 * proc_show_rebuild_rate()
2180 * @m: Synthetic file construction data
2181 * @v: File iterator
2182 *
2183 * Display current rebuild rate
2184 */
2185 static int
2186 proc_show_rebuild_rate(struct seq_file *m, void *v)
2187 {
2188 adapter_t *adapter = m->private;
2189 dma_addr_t dma_handle;
2190 caddr_t inquiry;
2191 struct pci_dev *pdev;
2192
2193 if( make_local_pdev(adapter, &pdev) != 0 )
2194 return 0;
2195
2196 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2197 goto free_pdev;
2198
2199 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2200 seq_puts(m, "Adapter inquiry failed.\n");
2201 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2202 goto free_inquiry;
2203 }
2204
2205 if( adapter->flag & BOARD_40LD )
2206 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2207 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2208 else
2209 seq_printf(m, "Rebuild Rate: [%d%%]\n",
2210 ((mraid_ext_inquiry *)
2211 inquiry)->raid_inq.adapter_info.rebuild_rate);
2212
2213 free_inquiry:
2214 mega_free_inquiry(inquiry, dma_handle, pdev);
2215 free_pdev:
2216 free_local_pdev(pdev);
2217 return 0;
2218 }
2219
2220
2221 /**
2222 * proc_show_battery()
2223 * @m: Synthetic file construction data
2224 * @v: File iterator
2225 *
2226 * Display information about the battery module on the controller.
2227 */
2228 static int
2229 proc_show_battery(struct seq_file *m, void *v)
2230 {
2231 adapter_t *adapter = m->private;
2232 dma_addr_t dma_handle;
2233 caddr_t inquiry;
2234 struct pci_dev *pdev;
2235 u8 battery_status;
2236
2237 if( make_local_pdev(adapter, &pdev) != 0 )
2238 return 0;
2239
2240 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2241 goto free_pdev;
2242
2243 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2244 seq_puts(m, "Adapter inquiry failed.\n");
2245 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2246 goto free_inquiry;
2247 }
2248
2249 if( adapter->flag & BOARD_40LD ) {
2250 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2251 }
2252 else {
2253 battery_status = ((mraid_ext_inquiry *)inquiry)->
2254 raid_inq.adapter_info.battery_status;
2255 }
2256
2257 /*
2258 * Decode the battery status
2259 */
2260 seq_printf(m, "Battery Status:[%d]", battery_status);
2261
2262 if(battery_status == MEGA_BATT_CHARGE_DONE)
2263 seq_puts(m, " Charge Done");
2264
2265 if(battery_status & MEGA_BATT_MODULE_MISSING)
2266 seq_puts(m, " Module Missing");
2267
2268 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2269 seq_puts(m, " Low Voltage");
2270
2271 if(battery_status & MEGA_BATT_TEMP_HIGH)
2272 seq_puts(m, " Temperature High");
2273
2274 if(battery_status & MEGA_BATT_PACK_MISSING)
2275 seq_puts(m, " Pack Missing");
2276
2277 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2278 seq_puts(m, " Charge In-progress");
2279
2280 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2281 seq_puts(m, " Charge Fail");
2282
2283 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2284 seq_puts(m, " Cycles Exceeded");
2285
2286 seq_putc(m, '\n');
2287
2288 free_inquiry:
2289 mega_free_inquiry(inquiry, dma_handle, pdev);
2290 free_pdev:
2291 free_local_pdev(pdev);
2292 return 0;
2293 }
2294
2295
2296 /*
2297 * Display scsi inquiry
2298 */
2299 static void
2300 mega_print_inquiry(struct seq_file *m, char *scsi_inq)
2301 {
2302 int i;
2303
2304 seq_puts(m, " Vendor: ");
2305 seq_write(m, scsi_inq + 8, 8);
2306 seq_puts(m, " Model: ");
2307 seq_write(m, scsi_inq + 16, 16);
2308 seq_puts(m, " Rev: ");
2309 seq_write(m, scsi_inq + 32, 4);
2310 seq_putc(m, '\n');
2311
2312 i = scsi_inq[0] & 0x1f;
2313 seq_printf(m, " Type: %s ", scsi_device_type(i));
2314
2315 seq_printf(m, " ANSI SCSI revision: %02x",
2316 scsi_inq[2] & 0x07);
2317
2318 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2319 seq_puts(m, " CCS\n");
2320 else
2321 seq_putc(m, '\n');
2322 }
2323
2324 /**
2325 * proc_show_pdrv()
2326 * @m: Synthetic file construction data
2327 * @adapter: pointer to our soft state
2328 * @channel: channel
2329 *
2330 * Display information about the physical drives.
2331 */
2332 static int
2333 proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)
2334 {
2335 dma_addr_t dma_handle;
2336 char *scsi_inq;
2337 dma_addr_t scsi_inq_dma_handle;
2338 caddr_t inquiry;
2339 struct pci_dev *pdev;
2340 u8 *pdrv_state;
2341 u8 state;
2342 int tgt;
2343 int max_channels;
2344 int i;
2345
2346 if( make_local_pdev(adapter, &pdev) != 0 )
2347 return 0;
2348
2349 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2350 goto free_pdev;
2351
2352 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2353 seq_puts(m, "Adapter inquiry failed.\n");
2354 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2355 goto free_inquiry;
2356 }
2357
2358
2359 scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle,
2360 GFP_KERNEL);
2361 if( scsi_inq == NULL ) {
2362 seq_puts(m, "memory not available for scsi inq.\n");
2363 goto free_inquiry;
2364 }
2365
2366 if( adapter->flag & BOARD_40LD ) {
2367 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2368 }
2369 else {
2370 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2371 raid_inq.pdrv_info.pdrv_state;
2372 }
2373
2374 max_channels = adapter->product_info.nchannels;
2375
2376 if( channel >= max_channels ) {
2377 goto free_pci;
2378 }
2379
2380 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2381
2382 i = channel*16 + tgt;
2383
2384 state = *(pdrv_state + i);
2385 switch( state & 0x0F ) {
2386 case PDRV_ONLINE:
2387 seq_printf(m, "Channel:%2d Id:%2d State: Online",
2388 channel, tgt);
2389 break;
2390
2391 case PDRV_FAILED:
2392 seq_printf(m, "Channel:%2d Id:%2d State: Failed",
2393 channel, tgt);
2394 break;
2395
2396 case PDRV_RBLD:
2397 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",
2398 channel, tgt);
2399 break;
2400
2401 case PDRV_HOTSPARE:
2402 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",
2403 channel, tgt);
2404 break;
2405
2406 default:
2407 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",
2408 channel, tgt);
2409 break;
2410 }
2411
2412 /*
2413 * This interface displays inquiries for disk drives
2414 * only. Inquries for logical drives and non-disk
2415 * devices are available through /proc/scsi/scsi
2416 */
2417 memset(scsi_inq, 0, 256);
2418 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2419 scsi_inq_dma_handle) ||
2420 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2421 continue;
2422 }
2423
2424 /*
2425 * Check for overflow. We print less than 240
2426 * characters for inquiry
2427 */
2428 seq_puts(m, ".\n");
2429 mega_print_inquiry(m, scsi_inq);
2430 }
2431
2432 free_pci:
2433 dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle);
2434 free_inquiry:
2435 mega_free_inquiry(inquiry, dma_handle, pdev);
2436 free_pdev:
2437 free_local_pdev(pdev);
2438 return 0;
2439 }
2440
2441 /**
2442 * proc_show_pdrv_ch0()
2443 * @m: Synthetic file construction data
2444 * @v: File iterator
2445 *
2446 * Display information about the physical drives on physical channel 0.
2447 */
2448 static int
2449 proc_show_pdrv_ch0(struct seq_file *m, void *v)
2450 {
2451 return proc_show_pdrv(m, m->private, 0);
2452 }
2453
2454
2455 /**
2456 * proc_show_pdrv_ch1()
2457 * @m: Synthetic file construction data
2458 * @v: File iterator
2459 *
2460 * Display information about the physical drives on physical channel 1.
2461 */
2462 static int
2463 proc_show_pdrv_ch1(struct seq_file *m, void *v)
2464 {
2465 return proc_show_pdrv(m, m->private, 1);
2466 }
2467
2468
2469 /**
2470 * proc_show_pdrv_ch2()
2471 * @m: Synthetic file construction data
2472 * @v: File iterator
2473 *
2474 * Display information about the physical drives on physical channel 2.
2475 */
2476 static int
2477 proc_show_pdrv_ch2(struct seq_file *m, void *v)
2478 {
2479 return proc_show_pdrv(m, m->private, 2);
2480 }
2481
2482
2483 /**
2484 * proc_show_pdrv_ch3()
2485 * @m: Synthetic file construction data
2486 * @v: File iterator
2487 *
2488 * Display information about the physical drives on physical channel 3.
2489 */
2490 static int
2491 proc_show_pdrv_ch3(struct seq_file *m, void *v)
2492 {
2493 return proc_show_pdrv(m, m->private, 3);
2494 }
2495
2496
2497 /**
2498 * proc_show_rdrv()
2499 * @m: Synthetic file construction data
2500 * @adapter: pointer to our soft state
2501 * @start: starting logical drive to display
2502 * @end: ending logical drive to display
2503 *
2504 * We do not print the inquiry information since its already available through
2505 * /proc/scsi/scsi interface
2506 */
2507 static int
2508 proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )
2509 {
2510 dma_addr_t dma_handle;
2511 logdrv_param *lparam;
2512 megacmd_t mc;
2513 char *disk_array;
2514 dma_addr_t disk_array_dma_handle;
2515 caddr_t inquiry;
2516 struct pci_dev *pdev;
2517 u8 *rdrv_state;
2518 int num_ldrv;
2519 u32 array_sz;
2520 int i;
2521
2522 if( make_local_pdev(adapter, &pdev) != 0 )
2523 return 0;
2524
2525 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )
2526 goto free_pdev;
2527
2528 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2529 seq_puts(m, "Adapter inquiry failed.\n");
2530 dev_warn(&adapter->dev->dev, "inquiry failed\n");
2531 goto free_inquiry;
2532 }
2533
2534 memset(&mc, 0, sizeof(megacmd_t));
2535
2536 if( adapter->flag & BOARD_40LD ) {
2537 array_sz = sizeof(disk_array_40ld);
2538
2539 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2540
2541 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2542 }
2543 else {
2544 array_sz = sizeof(disk_array_8ld);
2545
2546 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2547 raid_inq.logdrv_info.ldrv_state;
2548
2549 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2550 raid_inq.logdrv_info.num_ldrv;
2551 }
2552
2553 disk_array = dma_alloc_coherent(&pdev->dev, array_sz,
2554 &disk_array_dma_handle, GFP_KERNEL);
2555
2556 if( disk_array == NULL ) {
2557 seq_puts(m, "memory not available.\n");
2558 goto free_inquiry;
2559 }
2560
2561 mc.xferaddr = (u32)disk_array_dma_handle;
2562
2563 if( adapter->flag & BOARD_40LD ) {
2564 mc.cmd = FC_NEW_CONFIG;
2565 mc.opcode = OP_DCMD_READ_CONFIG;
2566
2567 if( mega_internal_command(adapter, &mc, NULL) ) {
2568 seq_puts(m, "40LD read config failed.\n");
2569 goto free_pci;
2570 }
2571
2572 }
2573 else {
2574 mc.cmd = NEW_READ_CONFIG_8LD;
2575
2576 if( mega_internal_command(adapter, &mc, NULL) ) {
2577 mc.cmd = READ_CONFIG_8LD;
2578 if( mega_internal_command(adapter, &mc, NULL) ) {
2579 seq_puts(m, "8LD read config failed.\n");
2580 goto free_pci;
2581 }
2582 }
2583 }
2584
2585 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2586
2587 if( adapter->flag & BOARD_40LD ) {
2588 lparam =
2589 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2590 }
2591 else {
2592 lparam =
2593 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2594 }
2595
2596 /*
2597 * Check for overflow. We print less than 240 characters for
2598 * information about each logical drive.
2599 */
2600 seq_printf(m, "Logical drive:%2d:, ", i);
2601
2602 switch( rdrv_state[i] & 0x0F ) {
2603 case RDRV_OFFLINE:
2604 seq_puts(m, "state: offline");
2605 break;
2606 case RDRV_DEGRADED:
2607 seq_puts(m, "state: degraded");
2608 break;
2609 case RDRV_OPTIMAL:
2610 seq_puts(m, "state: optimal");
2611 break;
2612 case RDRV_DELETED:
2613 seq_puts(m, "state: deleted");
2614 break;
2615 default:
2616 seq_puts(m, "state: unknown");
2617 break;
2618 }
2619
2620 /*
2621 * Check if check consistency or initialization is going on
2622 * for this logical drive.
2623 */
2624 if( (rdrv_state[i] & 0xF0) == 0x20 )
2625 seq_puts(m, ", check-consistency in progress");
2626 else if( (rdrv_state[i] & 0xF0) == 0x10 )
2627 seq_puts(m, ", initialization in progress");
2628
2629 seq_putc(m, '\n');
2630
2631 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);
2632 seq_printf(m, "RAID level:%3d, ", lparam->level);
2633 seq_printf(m, "Stripe size:%3d, ",
2634 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
2635 seq_printf(m, "Row size:%3d\n", lparam->row_size);
2636
2637 seq_puts(m, "Read Policy: ");
2638 switch(lparam->read_ahead) {
2639 case NO_READ_AHEAD:
2640 seq_puts(m, "No read ahead, ");
2641 break;
2642 case READ_AHEAD:
2643 seq_puts(m, "Read ahead, ");
2644 break;
2645 case ADAP_READ_AHEAD:
2646 seq_puts(m, "Adaptive, ");
2647 break;
2648
2649 }
2650
2651 seq_puts(m, "Write Policy: ");
2652 switch(lparam->write_mode) {
2653 case WRMODE_WRITE_THRU:
2654 seq_puts(m, "Write thru, ");
2655 break;
2656 case WRMODE_WRITE_BACK:
2657 seq_puts(m, "Write back, ");
2658 break;
2659 }
2660
2661 seq_puts(m, "Cache Policy: ");
2662 switch(lparam->direct_io) {
2663 case CACHED_IO:
2664 seq_puts(m, "Cached IO\n\n");
2665 break;
2666 case DIRECT_IO:
2667 seq_puts(m, "Direct IO\n\n");
2668 break;
2669 }
2670 }
2671
2672 free_pci:
2673 dma_free_coherent(&pdev->dev, array_sz, disk_array,
2674 disk_array_dma_handle);
2675 free_inquiry:
2676 mega_free_inquiry(inquiry, dma_handle, pdev);
2677 free_pdev:
2678 free_local_pdev(pdev);
2679 return 0;
2680 }
2681
2682 /**
2683 * proc_show_rdrv_10()
2684 * @m: Synthetic file construction data
2685 * @v: File iterator
2686 *
2687 * Display real time information about the logical drives 0 through 9.
2688 */
2689 static int
2690 proc_show_rdrv_10(struct seq_file *m, void *v)
2691 {
2692 return proc_show_rdrv(m, m->private, 0, 9);
2693 }
2694
2695
2696 /**
2697 * proc_show_rdrv_20()
2698 * @m: Synthetic file construction data
2699 * @v: File iterator
2700 *
2701 * Display real time information about the logical drives 0 through 9.
2702 */
2703 static int
2704 proc_show_rdrv_20(struct seq_file *m, void *v)
2705 {
2706 return proc_show_rdrv(m, m->private, 10, 19);
2707 }
2708
2709
2710 /**
2711 * proc_show_rdrv_30()
2712 * @m: Synthetic file construction data
2713 * @v: File iterator
2714 *
2715 * Display real time information about the logical drives 0 through 9.
2716 */
2717 static int
2718 proc_show_rdrv_30(struct seq_file *m, void *v)
2719 {
2720 return proc_show_rdrv(m, m->private, 20, 29);
2721 }
2722
2723
2724 /**
2725 * proc_show_rdrv_40()
2726 * @m: Synthetic file construction data
2727 * @v: File iterator
2728 *
2729 * Display real time information about the logical drives 0 through 9.
2730 */
2731 static int
2732 proc_show_rdrv_40(struct seq_file *m, void *v)
2733 {
2734 return proc_show_rdrv(m, m->private, 30, 39);
2735 }
2736
2737 /**
2738 * mega_create_proc_entry()
2739 * @index: index in soft state array
2740 * @parent: parent node for this /proc entry
2741 *
2742 * Creates /proc entries for our controllers.
2743 */
2744 static void
2745 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2746 {
2747 adapter_t *adapter = hba_soft_state[index];
2748 struct proc_dir_entry *dir;
2749 u8 string[16];
2750
2751 sprintf(string, "hba%d", adapter->host->host_no);
2752 dir = proc_mkdir_data(string, 0, parent, adapter);
2753 if (!dir) {
2754 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");
2755 return;
2756 }
2757
2758 proc_create_single_data("config", S_IRUSR, dir,
2759 proc_show_config, adapter);
2760 proc_create_single_data("stat", S_IRUSR, dir,
2761 proc_show_stat, adapter);
2762 proc_create_single_data("mailbox", S_IRUSR, dir,
2763 proc_show_mbox, adapter);
2764 #if MEGA_HAVE_ENH_PROC
2765 proc_create_single_data("rebuild-rate", S_IRUSR, dir,
2766 proc_show_rebuild_rate, adapter);
2767 proc_create_single_data("battery-status", S_IRUSR, dir,
2768 proc_show_battery, adapter);
2769 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir,
2770 proc_show_pdrv_ch0, adapter);
2771 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir,
2772 proc_show_pdrv_ch1, adapter);
2773 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir,
2774 proc_show_pdrv_ch2, adapter);
2775 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir,
2776 proc_show_pdrv_ch3, adapter);
2777 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir,
2778 proc_show_rdrv_10, adapter);
2779 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir,
2780 proc_show_rdrv_20, adapter);
2781 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir,
2782 proc_show_rdrv_30, adapter);
2783 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir,
2784 proc_show_rdrv_40, adapter);
2785 #endif
2786 }
2787
2788 #else
2789 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2790 {
2791 }
2792 #endif
2793
2794
2795 /*
2796 * megaraid_biosparam()
2797 *
2798 * Return the disk geometry for a particular disk
2799 */
2800 static int
2801 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
2802 sector_t capacity, int geom[])
2803 {
2804 adapter_t *adapter;
2805 int heads;
2806 int sectors;
2807 int cylinders;
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 if (scsi_partsize(bdev, capacity, geom))
2835 return 0;
2836
2837 dev_info(&adapter->dev->dev,
2838 "invalid partition on this disk on channel %d\n",
2839 sdev->channel);
2840
2841 /* Default heads (64) & sectors (32) */
2842 heads = 64;
2843 sectors = 32;
2844 cylinders = (ulong)capacity / (heads * sectors);
2845
2846 /* Handle extended translation size for logical drives > 1Gb */
2847 if ((ulong)capacity >= 0x200000) {
2848 heads = 255;
2849 sectors = 63;
2850 cylinders = (ulong)capacity / (heads * sectors);
2851 }
2852
2853 /* return result */
2854 geom[0] = heads;
2855 geom[1] = sectors;
2856 geom[2] = cylinders;
2857 }
2858
2859 return 0;
2860 }
2861
2862 /**
2863 * mega_init_scb()
2864 * @adapter: pointer to our soft state
2865 *
2866 * Allocate memory for the various pointers in the scb structures:
2867 * scatter-gather list pointer, passthru and extended passthru structure
2868 * pointers.
2869 */
2870 static int
2871 mega_init_scb(adapter_t *adapter)
2872 {
2873 scb_t *scb;
2874 int i;
2875
2876 for( i = 0; i < adapter->max_cmds; i++ ) {
2877
2878 scb = &adapter->scb_list[i];
2879
2880 scb->sgl64 = NULL;
2881 scb->sgl = NULL;
2882 scb->pthru = NULL;
2883 scb->epthru = NULL;
2884 }
2885
2886 for( i = 0; i < adapter->max_cmds; i++ ) {
2887
2888 scb = &adapter->scb_list[i];
2889
2890 scb->idx = i;
2891
2892 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev,
2893 sizeof(mega_sgl64) * adapter->sglen,
2894 &scb->sgl_dma_addr, GFP_KERNEL);
2895
2896 scb->sgl = (mega_sglist *)scb->sgl64;
2897
2898 if( !scb->sgl ) {
2899 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");
2900 mega_free_sgl(adapter);
2901 return -1;
2902 }
2903
2904 scb->pthru = dma_alloc_coherent(&adapter->dev->dev,
2905 sizeof(mega_passthru),
2906 &scb->pthru_dma_addr, GFP_KERNEL);
2907
2908 if( !scb->pthru ) {
2909 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");
2910 mega_free_sgl(adapter);
2911 return -1;
2912 }
2913
2914 scb->epthru = dma_alloc_coherent(&adapter->dev->dev,
2915 sizeof(mega_ext_passthru),
2916 &scb->epthru_dma_addr, GFP_KERNEL);
2917
2918 if( !scb->epthru ) {
2919 dev_warn(&adapter->dev->dev,
2920 "Can't allocate extended passthru\n");
2921 mega_free_sgl(adapter);
2922 return -1;
2923 }
2924
2925
2926 scb->dma_type = MEGA_DMA_TYPE_NONE;
2927
2928 /*
2929 * Link to free list
2930 * lock not required since we are loading the driver, so no
2931 * commands possible right now.
2932 */
2933 scb->state = SCB_FREE;
2934 scb->cmd = NULL;
2935 list_add(&scb->list, &adapter->free_list);
2936 }
2937
2938 return 0;
2939 }
2940
2941
2942 /**
2943 * megadev_open()
2944 * @inode: unused
2945 * @filep: unused
2946 *
2947 * Routines for the character/ioctl interface to the driver. Find out if this
2948 * is a valid open.
2949 */
2950 static int
2951 megadev_open (struct inode *inode, struct file *filep)
2952 {
2953 /*
2954 * Only allow superuser to access private ioctl interface
2955 */
2956 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
2957
2958 return 0;
2959 }
2960
2961
2962 /**
2963 * megadev_ioctl()
2964 * @filep: Our device file
2965 * @cmd: ioctl command
2966 * @arg: user buffer
2967 *
2968 * ioctl entry point for our private ioctl interface. We move the data in from
2969 * the user space, prepare the command (if necessary, convert the old MIMD
2970 * ioctl to new ioctl command), and issue a synchronous command to the
2971 * controller.
2972 */
2973 static int
2974 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
2975 {
2976 adapter_t *adapter;
2977 nitioctl_t uioc;
2978 int adapno;
2979 int rval;
2980 mega_passthru __user *upthru; /* user address for passthru */
2981 mega_passthru *pthru; /* copy user passthru here */
2982 dma_addr_t pthru_dma_hndl;
2983 void *data = NULL; /* data to be transferred */
2984 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
2985 megacmd_t mc;
2986 #if MEGA_HAVE_STATS
2987 megastat_t __user *ustats = NULL;
2988 int num_ldrv = 0;
2989 #endif
2990 u32 uxferaddr = 0;
2991 struct pci_dev *pdev;
2992
2993 /*
2994 * Make sure only USCSICMD are issued through this interface.
2995 * MIMD application would still fire different command.
2996 */
2997 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
2998 return -EINVAL;
2999 }
3000
3001 /*
3002 * Check and convert a possible MIMD command to NIT command.
3003 * mega_m_to_n() copies the data from the user space, so we do not
3004 * have to do it here.
3005 * NOTE: We will need some user address to copyout the data, therefore
3006 * the inteface layer will also provide us with the required user
3007 * addresses.
3008 */
3009 memset(&uioc, 0, sizeof(nitioctl_t));
3010 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3011 return rval;
3012
3013
3014 switch( uioc.opcode ) {
3015
3016 case GET_DRIVER_VER:
3017 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3018 return (-EFAULT);
3019
3020 break;
3021
3022 case GET_N_ADAP:
3023 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3024 return (-EFAULT);
3025
3026 /*
3027 * Shucks. MIMD interface returns a positive value for number
3028 * of adapters. TODO: Change it to return 0 when there is no
3029 * applicatio using mimd interface.
3030 */
3031 return hba_count;
3032
3033 case GET_ADAP_INFO:
3034
3035 /*
3036 * Which adapter
3037 */
3038 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3039 return (-ENODEV);
3040
3041 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3042 sizeof(struct mcontroller)) )
3043 return (-EFAULT);
3044 break;
3045
3046 #if MEGA_HAVE_STATS
3047
3048 case GET_STATS:
3049 /*
3050 * Which adapter
3051 */
3052 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3053 return (-ENODEV);
3054
3055 adapter = hba_soft_state[adapno];
3056
3057 ustats = uioc.uioc_uaddr;
3058
3059 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3060 return (-EFAULT);
3061
3062 /*
3063 * Check for the validity of the logical drive number
3064 */
3065 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3066
3067 if( copy_to_user(ustats->nreads, adapter->nreads,
3068 num_ldrv*sizeof(u32)) )
3069 return -EFAULT;
3070
3071 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3072 num_ldrv*sizeof(u32)) )
3073 return -EFAULT;
3074
3075 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3076 num_ldrv*sizeof(u32)) )
3077 return -EFAULT;
3078
3079 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3080 num_ldrv*sizeof(u32)) )
3081 return -EFAULT;
3082
3083 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3084 num_ldrv*sizeof(u32)) )
3085 return -EFAULT;
3086
3087 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3088 num_ldrv*sizeof(u32)) )
3089 return -EFAULT;
3090
3091 return 0;
3092
3093 #endif
3094 case MBOX_CMD:
3095
3096 /*
3097 * Which adapter
3098 */
3099 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3100 return (-ENODEV);
3101
3102 adapter = hba_soft_state[adapno];
3103
3104 /*
3105 * Deletion of logical drive is a special case. The adapter
3106 * should be quiescent before this command is issued.
3107 */
3108 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3109 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3110
3111 /*
3112 * Do we support this feature
3113 */
3114 if( !adapter->support_random_del ) {
3115 dev_warn(&adapter->dev->dev, "logdrv "
3116 "delete on non-supporting F/W\n");
3117
3118 return (-EINVAL);
3119 }
3120
3121 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3122
3123 if( rval == 0 ) {
3124 memset(&mc, 0, sizeof(megacmd_t));
3125
3126 mc.status = rval;
3127
3128 rval = mega_n_to_m((void __user *)arg, &mc);
3129 }
3130
3131 return rval;
3132 }
3133 /*
3134 * This interface only support the regular passthru commands.
3135 * Reject extended passthru and 64-bit passthru
3136 */
3137 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3138 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3139
3140 dev_warn(&adapter->dev->dev, "rejected passthru\n");
3141
3142 return (-EINVAL);
3143 }
3144
3145 /*
3146 * For all internal commands, the buffer must be allocated in
3147 * <4GB address range
3148 */
3149 if( make_local_pdev(adapter, &pdev) != 0 )
3150 return -EIO;
3151
3152 /* Is it a passthru command or a DCMD */
3153 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3154 /* Passthru commands */
3155
3156 pthru = dma_alloc_coherent(&pdev->dev,
3157 sizeof(mega_passthru),
3158 &pthru_dma_hndl, GFP_KERNEL);
3159
3160 if( pthru == NULL ) {
3161 free_local_pdev(pdev);
3162 return (-ENOMEM);
3163 }
3164
3165 /*
3166 * The user passthru structure
3167 */
3168 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3169
3170 /*
3171 * Copy in the user passthru here.
3172 */
3173 if( copy_from_user(pthru, upthru,
3174 sizeof(mega_passthru)) ) {
3175
3176 dma_free_coherent(&pdev->dev,
3177 sizeof(mega_passthru),
3178 pthru, pthru_dma_hndl);
3179
3180 free_local_pdev(pdev);
3181
3182 return (-EFAULT);
3183 }
3184
3185 /*
3186 * Is there a data transfer
3187 */
3188 if( pthru->dataxferlen ) {
3189 data = dma_alloc_coherent(&pdev->dev,
3190 pthru->dataxferlen,
3191 &data_dma_hndl,
3192 GFP_KERNEL);
3193
3194 if( data == NULL ) {
3195 dma_free_coherent(&pdev->dev,
3196 sizeof(mega_passthru),
3197 pthru,
3198 pthru_dma_hndl);
3199
3200 free_local_pdev(pdev);
3201
3202 return (-ENOMEM);
3203 }
3204
3205 /*
3206 * Save the user address and point the kernel
3207 * address at just allocated memory
3208 */
3209 uxferaddr = pthru->dataxferaddr;
3210 pthru->dataxferaddr = data_dma_hndl;
3211 }
3212
3213
3214 /*
3215 * Is data coming down-stream
3216 */
3217 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3218 /*
3219 * Get the user data
3220 */
3221 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3222 pthru->dataxferlen) ) {
3223 rval = (-EFAULT);
3224 goto freemem_and_return;
3225 }
3226 }
3227
3228 memset(&mc, 0, sizeof(megacmd_t));
3229
3230 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3231 mc.xferaddr = (u32)pthru_dma_hndl;
3232
3233 /*
3234 * Issue the command
3235 */
3236 mega_internal_command(adapter, &mc, pthru);
3237
3238 rval = mega_n_to_m((void __user *)arg, &mc);
3239
3240 if( rval ) goto freemem_and_return;
3241
3242
3243 /*
3244 * Is data going up-stream
3245 */
3246 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3247 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3248 pthru->dataxferlen) ) {
3249 rval = (-EFAULT);
3250 }
3251 }
3252
3253 /*
3254 * Send the request sense data also, irrespective of
3255 * whether the user has asked for it or not.
3256 */
3257 if (copy_to_user(upthru->reqsensearea,
3258 pthru->reqsensearea, 14))
3259 rval = -EFAULT;
3260
3261 freemem_and_return:
3262 if( pthru->dataxferlen ) {
3263 dma_free_coherent(&pdev->dev,
3264 pthru->dataxferlen, data,
3265 data_dma_hndl);
3266 }
3267
3268 dma_free_coherent(&pdev->dev, sizeof(mega_passthru),
3269 pthru, pthru_dma_hndl);
3270
3271 free_local_pdev(pdev);
3272
3273 return rval;
3274 }
3275 else {
3276 /* DCMD commands */
3277
3278 /*
3279 * Is there a data transfer
3280 */
3281 if( uioc.xferlen ) {
3282 data = dma_alloc_coherent(&pdev->dev,
3283 uioc.xferlen,
3284 &data_dma_hndl,
3285 GFP_KERNEL);
3286
3287 if( data == NULL ) {
3288 free_local_pdev(pdev);
3289 return (-ENOMEM);
3290 }
3291
3292 uxferaddr = MBOX(uioc)->xferaddr;
3293 }
3294
3295 /*
3296 * Is data coming down-stream
3297 */
3298 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3299 /*
3300 * Get the user data
3301 */
3302 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3303 uioc.xferlen) ) {
3304
3305 dma_free_coherent(&pdev->dev,
3306 uioc.xferlen, data,
3307 data_dma_hndl);
3308
3309 free_local_pdev(pdev);
3310
3311 return (-EFAULT);
3312 }
3313 }
3314
3315 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3316
3317 mc.xferaddr = (u32)data_dma_hndl;
3318
3319 /*
3320 * Issue the command
3321 */
3322 mega_internal_command(adapter, &mc, NULL);
3323
3324 rval = mega_n_to_m((void __user *)arg, &mc);
3325
3326 if( rval ) {
3327 if( uioc.xferlen ) {
3328 dma_free_coherent(&pdev->dev,
3329 uioc.xferlen, data,
3330 data_dma_hndl);
3331 }
3332
3333 free_local_pdev(pdev);
3334
3335 return rval;
3336 }
3337
3338 /*
3339 * Is data going up-stream
3340 */
3341 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3342 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3343 uioc.xferlen) ) {
3344
3345 rval = (-EFAULT);
3346 }
3347 }
3348
3349 if( uioc.xferlen ) {
3350 dma_free_coherent(&pdev->dev, uioc.xferlen,
3351 data, data_dma_hndl);
3352 }
3353
3354 free_local_pdev(pdev);
3355
3356 return rval;
3357 }
3358
3359 default:
3360 return (-EINVAL);
3361 }
3362
3363 return 0;
3364 }
3365
3366 static long
3367 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3368 {
3369 int ret;
3370
3371 mutex_lock(&megadev_mutex);
3372 ret = megadev_ioctl(filep, cmd, arg);
3373 mutex_unlock(&megadev_mutex);
3374
3375 return ret;
3376 }
3377
3378 /**
3379 * mega_m_to_n()
3380 * @arg: user address
3381 * @uioc: new ioctl structure
3382 *
3383 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3384 * structure
3385 *
3386 * Converts the older mimd ioctl structure to newer NIT structure
3387 */
3388 static int
3389 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3390 {
3391 struct uioctl_t uioc_mimd;
3392 char signature[8] = {0};
3393 u8 opcode;
3394 u8 subopcode;
3395
3396
3397 /*
3398 * check is the application conforms to NIT. We do not have to do much
3399 * in that case.
3400 * We exploit the fact that the signature is stored in the very
3401 * beginning of the structure.
3402 */
3403
3404 if( copy_from_user(signature, arg, 7) )
3405 return (-EFAULT);
3406
3407 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3408
3409 /*
3410 * NOTE NOTE: The nit ioctl is still under flux because of
3411 * change of mailbox definition, in HPE. No applications yet
3412 * use this interface and let's not have applications use this
3413 * interface till the new specifitions are in place.
3414 */
3415 return -EINVAL;
3416 #if 0
3417 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3418 return (-EFAULT);
3419 return 0;
3420 #endif
3421 }
3422
3423 /*
3424 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3425 *
3426 * Get the user ioctl structure
3427 */
3428 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3429 return (-EFAULT);
3430
3431
3432 /*
3433 * Get the opcode and subopcode for the commands
3434 */
3435 opcode = uioc_mimd.ui.fcs.opcode;
3436 subopcode = uioc_mimd.ui.fcs.subopcode;
3437
3438 switch (opcode) {
3439 case 0x82:
3440
3441 switch (subopcode) {
3442
3443 case MEGAIOC_QDRVRVER: /* Query driver version */
3444 uioc->opcode = GET_DRIVER_VER;
3445 uioc->uioc_uaddr = uioc_mimd.data;
3446 break;
3447
3448 case MEGAIOC_QNADAP: /* Get # of adapters */
3449 uioc->opcode = GET_N_ADAP;
3450 uioc->uioc_uaddr = uioc_mimd.data;
3451 break;
3452
3453 case MEGAIOC_QADAPINFO: /* Get adapter information */
3454 uioc->opcode = GET_ADAP_INFO;
3455 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3456 uioc->uioc_uaddr = uioc_mimd.data;
3457 break;
3458
3459 default:
3460 return(-EINVAL);
3461 }
3462
3463 break;
3464
3465
3466 case 0x81:
3467
3468 uioc->opcode = MBOX_CMD;
3469 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3470
3471 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3472
3473 uioc->xferlen = uioc_mimd.ui.fcs.length;
3474
3475 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3476 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3477
3478 break;
3479
3480 case 0x80:
3481
3482 uioc->opcode = MBOX_CMD;
3483 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3484
3485 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3486
3487 /*
3488 * Choose the xferlen bigger of input and output data
3489 */
3490 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3491 uioc_mimd.outlen : uioc_mimd.inlen;
3492
3493 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3494 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3495
3496 break;
3497
3498 default:
3499 return (-EINVAL);
3500
3501 }
3502
3503 return 0;
3504 }
3505
3506 /*
3507 * mega_n_to_m()
3508 * @arg: user address
3509 * @mc: mailbox command
3510 *
3511 * Updates the status information to the application, depending on application
3512 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3513 */
3514 static int
3515 mega_n_to_m(void __user *arg, megacmd_t *mc)
3516 {
3517 nitioctl_t __user *uiocp;
3518 megacmd_t __user *umc;
3519 mega_passthru __user *upthru;
3520 struct uioctl_t __user *uioc_mimd;
3521 char signature[8] = {0};
3522
3523 /*
3524 * check is the application conforms to NIT.
3525 */
3526 if( copy_from_user(signature, arg, 7) )
3527 return -EFAULT;
3528
3529 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3530
3531 uiocp = arg;
3532
3533 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3534 return (-EFAULT);
3535
3536 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3537
3538 umc = MBOX_P(uiocp);
3539
3540 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3541 return -EFAULT;
3542
3543 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3544 return (-EFAULT);
3545 }
3546 }
3547 else {
3548 uioc_mimd = arg;
3549
3550 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3551 return (-EFAULT);
3552
3553 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3554
3555 umc = (megacmd_t __user *)uioc_mimd->mbox;
3556
3557 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3558 return (-EFAULT);
3559
3560 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3561 return (-EFAULT);
3562 }
3563 }
3564
3565 return 0;
3566 }
3567
3568
3569 /*
3570 * MEGARAID 'FW' commands.
3571 */
3572
3573 /**
3574 * mega_is_bios_enabled()
3575 * @adapter: pointer to our soft state
3576 *
3577 * issue command to find out if the BIOS is enabled for this controller
3578 */
3579 static int
3580 mega_is_bios_enabled(adapter_t *adapter)
3581 {
3582 unsigned char raw_mbox[sizeof(struct mbox_out)];
3583 mbox_t *mbox;
3584
3585 mbox = (mbox_t *)raw_mbox;
3586
3587 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3588
3589 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3590
3591 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3592
3593 raw_mbox[0] = IS_BIOS_ENABLED;
3594 raw_mbox[2] = GET_BIOS;
3595
3596 issue_scb_block(adapter, raw_mbox);
3597
3598 return *(char *)adapter->mega_buffer;
3599 }
3600
3601
3602 /**
3603 * mega_enum_raid_scsi()
3604 * @adapter: pointer to our soft state
3605 *
3606 * Find out what channels are RAID/SCSI. This information is used to
3607 * differentiate the virtual channels and physical channels and to support
3608 * ROMB feature and non-disk devices.
3609 */
3610 static void
3611 mega_enum_raid_scsi(adapter_t *adapter)
3612 {
3613 unsigned char raw_mbox[sizeof(struct mbox_out)];
3614 mbox_t *mbox;
3615 int i;
3616
3617 mbox = (mbox_t *)raw_mbox;
3618
3619 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3620
3621 /*
3622 * issue command to find out what channels are raid/scsi
3623 */
3624 raw_mbox[0] = CHNL_CLASS;
3625 raw_mbox[2] = GET_CHNL_CLASS;
3626
3627 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3628
3629 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3630
3631 /*
3632 * Non-ROMB firmware fail this command, so all channels
3633 * must be shown RAID
3634 */
3635 adapter->mega_ch_class = 0xFF;
3636
3637 if(!issue_scb_block(adapter, raw_mbox)) {
3638 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3639
3640 }
3641
3642 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3643 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3644 dev_info(&adapter->dev->dev, "channel[%d] is raid\n",
3645 i);
3646 }
3647 else {
3648 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",
3649 i);
3650 }
3651 }
3652
3653 return;
3654 }
3655
3656
3657 /**
3658 * mega_get_boot_drv()
3659 * @adapter: pointer to our soft state
3660 *
3661 * Find out which device is the boot device. Note, any logical drive or any
3662 * phyical device (e.g., a CDROM) can be designated as a boot device.
3663 */
3664 static void
3665 mega_get_boot_drv(adapter_t *adapter)
3666 {
3667 struct private_bios_data *prv_bios_data;
3668 unsigned char raw_mbox[sizeof(struct mbox_out)];
3669 mbox_t *mbox;
3670 u16 cksum = 0;
3671 u8 *cksum_p;
3672 u8 boot_pdrv;
3673 int i;
3674
3675 mbox = (mbox_t *)raw_mbox;
3676
3677 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3678
3679 raw_mbox[0] = BIOS_PVT_DATA;
3680 raw_mbox[2] = GET_BIOS_PVT_DATA;
3681
3682 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3683
3684 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3685
3686 adapter->boot_ldrv_enabled = 0;
3687 adapter->boot_ldrv = 0;
3688
3689 adapter->boot_pdrv_enabled = 0;
3690 adapter->boot_pdrv_ch = 0;
3691 adapter->boot_pdrv_tgt = 0;
3692
3693 if(issue_scb_block(adapter, raw_mbox) == 0) {
3694 prv_bios_data =
3695 (struct private_bios_data *)adapter->mega_buffer;
3696
3697 cksum = 0;
3698 cksum_p = (char *)prv_bios_data;
3699 for (i = 0; i < 14; i++ ) {
3700 cksum += (u16)(*cksum_p++);
3701 }
3702
3703 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
3704
3705 /*
3706 * If MSB is set, a physical drive is set as boot
3707 * device
3708 */
3709 if( prv_bios_data->boot_drv & 0x80 ) {
3710 adapter->boot_pdrv_enabled = 1;
3711 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
3712 adapter->boot_pdrv_ch = boot_pdrv / 16;
3713 adapter->boot_pdrv_tgt = boot_pdrv % 16;
3714 }
3715 else {
3716 adapter->boot_ldrv_enabled = 1;
3717 adapter->boot_ldrv = prv_bios_data->boot_drv;
3718 }
3719 }
3720 }
3721
3722 }
3723
3724 /**
3725 * mega_support_random_del()
3726 * @adapter: pointer to our soft state
3727 *
3728 * Find out if this controller supports random deletion and addition of
3729 * logical drives
3730 */
3731 static int
3732 mega_support_random_del(adapter_t *adapter)
3733 {
3734 unsigned char raw_mbox[sizeof(struct mbox_out)];
3735 mbox_t *mbox;
3736 int rval;
3737
3738 mbox = (mbox_t *)raw_mbox;
3739
3740 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3741
3742 /*
3743 * issue command
3744 */
3745 raw_mbox[0] = FC_DEL_LOGDRV;
3746 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
3747
3748 rval = issue_scb_block(adapter, raw_mbox);
3749
3750 return !rval;
3751 }
3752
3753
3754 /**
3755 * mega_support_ext_cdb()
3756 * @adapter: pointer to our soft state
3757 *
3758 * Find out if this firmware support cdblen > 10
3759 */
3760 static int
3761 mega_support_ext_cdb(adapter_t *adapter)
3762 {
3763 unsigned char raw_mbox[sizeof(struct mbox_out)];
3764 mbox_t *mbox;
3765 int rval;
3766
3767 mbox = (mbox_t *)raw_mbox;
3768
3769 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3770 /*
3771 * issue command to find out if controller supports extended CDBs.
3772 */
3773 raw_mbox[0] = 0xA4;
3774 raw_mbox[2] = 0x16;
3775
3776 rval = issue_scb_block(adapter, raw_mbox);
3777
3778 return !rval;
3779 }
3780
3781
3782 /**
3783 * mega_del_logdrv()
3784 * @adapter: pointer to our soft state
3785 * @logdrv: logical drive to be deleted
3786 *
3787 * Delete the specified logical drive. It is the responsibility of the user
3788 * app to let the OS know about this operation.
3789 */
3790 static int
3791 mega_del_logdrv(adapter_t *adapter, int logdrv)
3792 {
3793 unsigned long flags;
3794 scb_t *scb;
3795 int rval;
3796
3797 /*
3798 * Stop sending commands to the controller, queue them internally.
3799 * When deletion is complete, ISR will flush the queue.
3800 */
3801 atomic_set(&adapter->quiescent, 1);
3802
3803 /*
3804 * Wait till all the issued commands are complete and there are no
3805 * commands in the pending queue
3806 */
3807 while (atomic_read(&adapter->pend_cmds) > 0 ||
3808 !list_empty(&adapter->pending_list))
3809 msleep(1000); /* sleep for 1s */
3810
3811 rval = mega_do_del_logdrv(adapter, logdrv);
3812
3813 spin_lock_irqsave(&adapter->lock, flags);
3814
3815 /*
3816 * If delete operation was successful, add 0x80 to the logical drive
3817 * ids for commands in the pending queue.
3818 */
3819 if (adapter->read_ldidmap) {
3820 struct list_head *pos;
3821 list_for_each(pos, &adapter->pending_list) {
3822 scb = list_entry(pos, scb_t, list);
3823 if (scb->pthru->logdrv < 0x80 )
3824 scb->pthru->logdrv += 0x80;
3825 }
3826 }
3827
3828 atomic_set(&adapter->quiescent, 0);
3829
3830 mega_runpendq(adapter);
3831
3832 spin_unlock_irqrestore(&adapter->lock, flags);
3833
3834 return rval;
3835 }
3836
3837
3838 static int
3839 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
3840 {
3841 megacmd_t mc;
3842 int rval;
3843
3844 memset( &mc, 0, sizeof(megacmd_t));
3845
3846 mc.cmd = FC_DEL_LOGDRV;
3847 mc.opcode = OP_DEL_LOGDRV;
3848 mc.subopcode = logdrv;
3849
3850 rval = mega_internal_command(adapter, &mc, NULL);
3851
3852 /* log this event */
3853 if(rval) {
3854 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);
3855 return rval;
3856 }
3857
3858 /*
3859 * After deleting first logical drive, the logical drives must be
3860 * addressed by adding 0x80 to the logical drive id.
3861 */
3862 adapter->read_ldidmap = 1;
3863
3864 return rval;
3865 }
3866
3867
3868 /**
3869 * mega_get_max_sgl()
3870 * @adapter: pointer to our soft state
3871 *
3872 * Find out the maximum number of scatter-gather elements supported by this
3873 * version of the firmware
3874 */
3875 static void
3876 mega_get_max_sgl(adapter_t *adapter)
3877 {
3878 unsigned char raw_mbox[sizeof(struct mbox_out)];
3879 mbox_t *mbox;
3880
3881 mbox = (mbox_t *)raw_mbox;
3882
3883 memset(mbox, 0, sizeof(raw_mbox));
3884
3885 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3886
3887 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3888
3889 raw_mbox[0] = MAIN_MISC_OPCODE;
3890 raw_mbox[2] = GET_MAX_SG_SUPPORT;
3891
3892
3893 if( issue_scb_block(adapter, raw_mbox) ) {
3894 /*
3895 * f/w does not support this command. Choose the default value
3896 */
3897 adapter->sglen = MIN_SGLIST;
3898 }
3899 else {
3900 adapter->sglen = *((char *)adapter->mega_buffer);
3901
3902 /*
3903 * Make sure this is not more than the resources we are
3904 * planning to allocate
3905 */
3906 if ( adapter->sglen > MAX_SGLIST )
3907 adapter->sglen = MAX_SGLIST;
3908 }
3909
3910 return;
3911 }
3912
3913
3914 /**
3915 * mega_support_cluster()
3916 * @adapter: pointer to our soft state
3917 *
3918 * Find out if this firmware support cluster calls.
3919 */
3920 static int
3921 mega_support_cluster(adapter_t *adapter)
3922 {
3923 unsigned char raw_mbox[sizeof(struct mbox_out)];
3924 mbox_t *mbox;
3925
3926 mbox = (mbox_t *)raw_mbox;
3927
3928 memset(mbox, 0, sizeof(raw_mbox));
3929
3930 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3931
3932 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3933
3934 /*
3935 * Try to get the initiator id. This command will succeed iff the
3936 * clustering is available on this HBA.
3937 */
3938 raw_mbox[0] = MEGA_GET_TARGET_ID;
3939
3940 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
3941
3942 /*
3943 * Cluster support available. Get the initiator target id.
3944 * Tell our id to mid-layer too.
3945 */
3946 adapter->this_id = *(u32 *)adapter->mega_buffer;
3947 adapter->host->this_id = adapter->this_id;
3948
3949 return 1;
3950 }
3951
3952 return 0;
3953 }
3954
3955 #ifdef CONFIG_PROC_FS
3956 /**
3957 * mega_adapinq()
3958 * @adapter: pointer to our soft state
3959 * @dma_handle: DMA address of the buffer
3960 *
3961 * Issue internal commands while interrupts are available.
3962 * We only issue direct mailbox commands from within the driver. ioctl()
3963 * interface using these routines can issue passthru commands.
3964 */
3965 static int
3966 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
3967 {
3968 megacmd_t mc;
3969
3970 memset(&mc, 0, sizeof(megacmd_t));
3971
3972 if( adapter->flag & BOARD_40LD ) {
3973 mc.cmd = FC_NEW_CONFIG;
3974 mc.opcode = NC_SUBOP_ENQUIRY3;
3975 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
3976 }
3977 else {
3978 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
3979 }
3980
3981 mc.xferaddr = (u32)dma_handle;
3982
3983 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
3984 return -1;
3985 }
3986
3987 return 0;
3988 }
3989
3990
3991 /**
3992 * mega_internal_dev_inquiry()
3993 * @adapter: pointer to our soft state
3994 * @ch: channel for this device
3995 * @tgt: ID of this device
3996 * @buf_dma_handle: DMA address of the buffer
3997 *
3998 * Issue the scsi inquiry for the specified device.
3999 */
4000 static int
4001 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4002 dma_addr_t buf_dma_handle)
4003 {
4004 mega_passthru *pthru;
4005 dma_addr_t pthru_dma_handle;
4006 megacmd_t mc;
4007 int rval;
4008 struct pci_dev *pdev;
4009
4010
4011 /*
4012 * For all internal commands, the buffer must be allocated in <4GB
4013 * address range
4014 */
4015 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4016
4017 pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru),
4018 &pthru_dma_handle, GFP_KERNEL);
4019
4020 if( pthru == NULL ) {
4021 free_local_pdev(pdev);
4022 return -1;
4023 }
4024
4025 pthru->timeout = 2;
4026 pthru->ars = 1;
4027 pthru->reqsenselen = 14;
4028 pthru->islogical = 0;
4029
4030 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4031
4032 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4033
4034 pthru->cdblen = 6;
4035
4036 pthru->cdb[0] = INQUIRY;
4037 pthru->cdb[1] = 0;
4038 pthru->cdb[2] = 0;
4039 pthru->cdb[3] = 0;
4040 pthru->cdb[4] = 255;
4041 pthru->cdb[5] = 0;
4042
4043
4044 pthru->dataxferaddr = (u32)buf_dma_handle;
4045 pthru->dataxferlen = 256;
4046
4047 memset(&mc, 0, sizeof(megacmd_t));
4048
4049 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4050 mc.xferaddr = (u32)pthru_dma_handle;
4051
4052 rval = mega_internal_command(adapter, &mc, pthru);
4053
4054 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru,
4055 pthru_dma_handle);
4056
4057 free_local_pdev(pdev);
4058
4059 return rval;
4060 }
4061 #endif
4062
4063 /**
4064 * mega_internal_command()
4065 * @adapter: pointer to our soft state
4066 * @mc: the mailbox command
4067 * @pthru: Passthru structure for DCDB commands
4068 *
4069 * Issue the internal commands in interrupt mode.
4070 * The last argument is the address of the passthru structure if the command
4071 * to be fired is a passthru command
4072 *
4073 * Note: parameter 'pthru' is null for non-passthru commands.
4074 */
4075 static int
4076 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4077 {
4078 unsigned long flags;
4079 scb_t *scb;
4080 int rval;
4081
4082 /*
4083 * The internal commands share one command id and hence are
4084 * serialized. This is so because we want to reserve maximum number of
4085 * available command ids for the I/O commands.
4086 */
4087 mutex_lock(&adapter->int_mtx);
4088
4089 scb = &adapter->int_scb;
4090 memset(scb, 0, sizeof(scb_t));
4091
4092 scb->idx = CMDID_INT_CMDS;
4093 scb->state |= SCB_ACTIVE | SCB_PENDQ;
4094
4095 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4096
4097 /*
4098 * Is it a passthru command
4099 */
4100 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)
4101 scb->pthru = pthru;
4102
4103 spin_lock_irqsave(&adapter->lock, flags);
4104 list_add_tail(&scb->list, &adapter->pending_list);
4105 /*
4106 * Check if the HBA is in quiescent state, e.g., during a
4107 * delete logical drive opertion. If it is, don't run
4108 * the pending_list.
4109 */
4110 if (atomic_read(&adapter->quiescent) == 0)
4111 mega_runpendq(adapter);
4112 spin_unlock_irqrestore(&adapter->lock, flags);
4113
4114 wait_for_completion(&adapter->int_waitq);
4115
4116 mc->status = rval = adapter->int_status;
4117
4118 /*
4119 * Print a debug message for all failed commands. Applications can use
4120 * this information.
4121 */
4122 if (rval && trace_level) {
4123 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",
4124 mc->cmd, mc->opcode, mc->subopcode, rval);
4125 }
4126
4127 mutex_unlock(&adapter->int_mtx);
4128 return rval;
4129 }
4130
4131 static struct scsi_host_template megaraid_template = {
4132 .module = THIS_MODULE,
4133 .name = "MegaRAID",
4134 .proc_name = "megaraid_legacy",
4135 .info = megaraid_info,
4136 .queuecommand = megaraid_queue,
4137 .bios_param = megaraid_biosparam,
4138 .max_sectors = MAX_SECTORS_PER_IO,
4139 .can_queue = MAX_COMMANDS,
4140 .this_id = DEFAULT_INITIATOR_ID,
4141 .sg_tablesize = MAX_SGLIST,
4142 .cmd_per_lun = DEF_CMD_PER_LUN,
4143 .eh_abort_handler = megaraid_abort,
4144 .eh_device_reset_handler = megaraid_reset,
4145 .eh_bus_reset_handler = megaraid_reset,
4146 .eh_host_reset_handler = megaraid_reset,
4147 .no_write_same = 1,
4148 };
4149
4150 static int
4151 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4152 {
4153 struct Scsi_Host *host;
4154 adapter_t *adapter;
4155 unsigned long mega_baseport, tbase, flag = 0;
4156 u16 subsysid, subsysvid;
4157 u8 pci_bus, pci_dev_func;
4158 int irq, i, j;
4159 int error = -ENODEV;
4160
4161 if (hba_count >= MAX_CONTROLLERS)
4162 goto out;
4163
4164 if (pci_enable_device(pdev))
4165 goto out;
4166 pci_set_master(pdev);
4167
4168 pci_bus = pdev->bus->number;
4169 pci_dev_func = pdev->devfn;
4170
4171 /*
4172 * The megaraid3 stuff reports the ID of the Intel part which is not
4173 * remotely specific to the megaraid
4174 */
4175 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4176 u16 magic;
4177 /*
4178 * Don't fall over the Compaq management cards using the same
4179 * PCI identifier
4180 */
4181 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4182 pdev->subsystem_device == 0xC000)
4183 goto out_disable_device;
4184 /* Now check the magic signature byte */
4185 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4186 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4187 goto out_disable_device;
4188 /* Ok it is probably a megaraid */
4189 }
4190
4191 /*
4192 * For these vendor and device ids, signature offsets are not
4193 * valid and 64 bit is implicit
4194 */
4195 if (id->driver_data & BOARD_64BIT)
4196 flag |= BOARD_64BIT;
4197 else {
4198 u32 magic64;
4199
4200 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4201 if (magic64 == HBA_SIGNATURE_64BIT)
4202 flag |= BOARD_64BIT;
4203 }
4204
4205 subsysvid = pdev->subsystem_vendor;
4206 subsysid = pdev->subsystem_device;
4207
4208 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",
4209 id->vendor, id->device);
4210
4211 /* Read the base port and IRQ from PCI */
4212 mega_baseport = pci_resource_start(pdev, 0);
4213 irq = pdev->irq;
4214
4215 tbase = mega_baseport;
4216 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4217 flag |= BOARD_MEMMAP;
4218
4219 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4220 dev_warn(&pdev->dev, "mem region busy!\n");
4221 goto out_disable_device;
4222 }
4223
4224 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4225 if (!mega_baseport) {
4226 dev_warn(&pdev->dev, "could not map hba memory\n");
4227 goto out_release_region;
4228 }
4229 } else {
4230 flag |= BOARD_IOMAP;
4231 mega_baseport += 0x10;
4232
4233 if (!request_region(mega_baseport, 16, "megaraid"))
4234 goto out_disable_device;
4235 }
4236
4237 /* Initialize SCSI Host structure */
4238 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4239 if (!host)
4240 goto out_iounmap;
4241
4242 adapter = (adapter_t *)host->hostdata;
4243 memset(adapter, 0, sizeof(adapter_t));
4244
4245 dev_notice(&pdev->dev,
4246 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4247 host->host_no, mega_baseport, irq);
4248
4249 adapter->base = mega_baseport;
4250 if (flag & BOARD_MEMMAP)
4251 adapter->mmio_base = (void __iomem *) mega_baseport;
4252
4253 INIT_LIST_HEAD(&adapter->free_list);
4254 INIT_LIST_HEAD(&adapter->pending_list);
4255 INIT_LIST_HEAD(&adapter->completed_list);
4256
4257 adapter->flag = flag;
4258 spin_lock_init(&adapter->lock);
4259
4260 host->cmd_per_lun = max_cmd_per_lun;
4261 host->max_sectors = max_sectors_per_io;
4262
4263 adapter->dev = pdev;
4264 adapter->host = host;
4265
4266 adapter->host->irq = irq;
4267
4268 if (flag & BOARD_MEMMAP)
4269 adapter->host->base = tbase;
4270 else {
4271 adapter->host->io_port = tbase;
4272 adapter->host->n_io_port = 16;
4273 }
4274
4275 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4276
4277 /*
4278 * Allocate buffer to issue internal commands.
4279 */
4280 adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev,
4281 MEGA_BUFFER_SIZE,
4282 &adapter->buf_dma_handle,
4283 GFP_KERNEL);
4284 if (!adapter->mega_buffer) {
4285 dev_warn(&pdev->dev, "out of RAM\n");
4286 goto out_host_put;
4287 }
4288
4289 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t),
4290 GFP_KERNEL);
4291 if (!adapter->scb_list) {
4292 dev_warn(&pdev->dev, "out of RAM\n");
4293 goto out_free_cmd_buffer;
4294 }
4295
4296 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4297 megaraid_isr_memmapped : megaraid_isr_iomapped,
4298 IRQF_SHARED, "megaraid", adapter)) {
4299 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);
4300 goto out_free_scb_list;
4301 }
4302
4303 if (mega_setup_mailbox(adapter))
4304 goto out_free_irq;
4305
4306 if (mega_query_adapter(adapter))
4307 goto out_free_mbox;
4308
4309 /*
4310 * Have checks for some buggy f/w
4311 */
4312 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4313 /*
4314 * Which firmware
4315 */
4316 if (!strcmp(adapter->fw_version, "3.00") ||
4317 !strcmp(adapter->fw_version, "3.01")) {
4318
4319 dev_warn(&pdev->dev,
4320 "Your card is a Dell PERC "
4321 "2/SC RAID controller with "
4322 "firmware\nmegaraid: 3.00 or 3.01. "
4323 "This driver is known to have "
4324 "corruption issues\nmegaraid: with "
4325 "those firmware versions on this "
4326 "specific card. In order\nmegaraid: "
4327 "to protect your data, please upgrade "
4328 "your firmware to version\nmegaraid: "
4329 "3.10 or later, available from the "
4330 "Dell Technical Support web\n"
4331 "megaraid: site at\nhttp://support."
4332 "dell.com/us/en/filelib/download/"
4333 "index.asp?fileid=2940\n"
4334 );
4335 }
4336 }
4337
4338 /*
4339 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4340 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4341 * support, since this firmware cannot handle 64 bit
4342 * addressing
4343 */
4344 if ((subsysvid == PCI_VENDOR_ID_HP) &&
4345 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4346 /*
4347 * which firmware
4348 */
4349 if (!strcmp(adapter->fw_version, "H01.07") ||
4350 !strcmp(adapter->fw_version, "H01.08") ||
4351 !strcmp(adapter->fw_version, "H01.09") ) {
4352 dev_warn(&pdev->dev,
4353 "Firmware H.01.07, "
4354 "H.01.08, and H.01.09 on 1M/2M "
4355 "controllers\n"
4356 "do not support 64 bit "
4357 "addressing.\nDISABLING "
4358 "64 bit support.\n");
4359 adapter->flag &= ~BOARD_64BIT;
4360 }
4361 }
4362
4363 if (mega_is_bios_enabled(adapter))
4364 mega_hbas[hba_count].is_bios_enabled = 1;
4365 mega_hbas[hba_count].hostdata_addr = adapter;
4366
4367 /*
4368 * Find out which channel is raid and which is scsi. This is
4369 * for ROMB support.
4370 */
4371 mega_enum_raid_scsi(adapter);
4372
4373 /*
4374 * Find out if a logical drive is set as the boot drive. If
4375 * there is one, will make that as the first logical drive.
4376 * ROMB: Do we have to boot from a physical drive. Then all
4377 * the physical drives would appear before the logical disks.
4378 * Else, all the physical drives would be exported to the mid
4379 * layer after logical drives.
4380 */
4381 mega_get_boot_drv(adapter);
4382
4383 if (adapter->boot_pdrv_enabled) {
4384 j = adapter->product_info.nchannels;
4385 for( i = 0; i < j; i++ )
4386 adapter->logdrv_chan[i] = 0;
4387 for( i = j; i < NVIRT_CHAN + j; i++ )
4388 adapter->logdrv_chan[i] = 1;
4389 } else {
4390 for (i = 0; i < NVIRT_CHAN; i++)
4391 adapter->logdrv_chan[i] = 1;
4392 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4393 adapter->logdrv_chan[i] = 0;
4394 adapter->mega_ch_class <<= NVIRT_CHAN;
4395 }
4396
4397 /*
4398 * Do we support random deletion and addition of logical
4399 * drives
4400 */
4401 adapter->read_ldidmap = 0; /* set it after first logdrv
4402 delete cmd */
4403 adapter->support_random_del = mega_support_random_del(adapter);
4404
4405 /* Initialize SCBs */
4406 if (mega_init_scb(adapter))
4407 goto out_free_mbox;
4408
4409 /*
4410 * Reset the pending commands counter
4411 */
4412 atomic_set(&adapter->pend_cmds, 0);
4413
4414 /*
4415 * Reset the adapter quiescent flag
4416 */
4417 atomic_set(&adapter->quiescent, 0);
4418
4419 hba_soft_state[hba_count] = adapter;
4420
4421 /*
4422 * Fill in the structure which needs to be passed back to the
4423 * application when it does an ioctl() for controller related
4424 * information.
4425 */
4426 i = hba_count;
4427
4428 mcontroller[i].base = mega_baseport;
4429 mcontroller[i].irq = irq;
4430 mcontroller[i].numldrv = adapter->numldrv;
4431 mcontroller[i].pcibus = pci_bus;
4432 mcontroller[i].pcidev = id->device;
4433 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4434 mcontroller[i].pciid = -1;
4435 mcontroller[i].pcivendor = id->vendor;
4436 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4437 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4438
4439
4440 /* Set the Mode of addressing to 64 bit if we can */
4441 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4442 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
4443 adapter->has_64bit_addr = 1;
4444 } else {
4445 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
4446 adapter->has_64bit_addr = 0;
4447 }
4448
4449 mutex_init(&adapter->int_mtx);
4450 init_completion(&adapter->int_waitq);
4451
4452 adapter->this_id = DEFAULT_INITIATOR_ID;
4453 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4454
4455 #if MEGA_HAVE_CLUSTERING
4456 /*
4457 * Is cluster support enabled on this controller
4458 * Note: In a cluster the HBAs ( the initiators ) will have
4459 * different target IDs and we cannot assume it to be 7. Call
4460 * to mega_support_cluster() will get the target ids also if
4461 * the cluster support is available
4462 */
4463 adapter->has_cluster = mega_support_cluster(adapter);
4464 if (adapter->has_cluster) {
4465 dev_notice(&pdev->dev,
4466 "Cluster driver, initiator id:%d\n",
4467 adapter->this_id);
4468 }
4469 #endif
4470
4471 pci_set_drvdata(pdev, host);
4472
4473 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4474
4475 error = scsi_add_host(host, &pdev->dev);
4476 if (error)
4477 goto out_free_mbox;
4478
4479 scsi_scan_host(host);
4480 hba_count++;
4481 return 0;
4482
4483 out_free_mbox:
4484 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),
4485 adapter->una_mbox64, adapter->una_mbox64_dma);
4486 out_free_irq:
4487 free_irq(adapter->host->irq, adapter);
4488 out_free_scb_list:
4489 kfree(adapter->scb_list);
4490 out_free_cmd_buffer:
4491 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,
4492 adapter->mega_buffer, adapter->buf_dma_handle);
4493 out_host_put:
4494 scsi_host_put(host);
4495 out_iounmap:
4496 if (flag & BOARD_MEMMAP)
4497 iounmap((void *)mega_baseport);
4498 out_release_region:
4499 if (flag & BOARD_MEMMAP)
4500 release_mem_region(tbase, 128);
4501 else
4502 release_region(mega_baseport, 16);
4503 out_disable_device:
4504 pci_disable_device(pdev);
4505 out:
4506 return error;
4507 }
4508
4509 static void
4510 __megaraid_shutdown(adapter_t *adapter)
4511 {
4512 u_char raw_mbox[sizeof(struct mbox_out)];
4513 mbox_t *mbox = (mbox_t *)raw_mbox;
4514 int i;
4515
4516 /* Flush adapter cache */
4517 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4518 raw_mbox[0] = FLUSH_ADAPTER;
4519
4520 free_irq(adapter->host->irq, adapter);
4521
4522 /* Issue a blocking (interrupts disabled) command to the card */
4523 issue_scb_block(adapter, raw_mbox);
4524
4525 /* Flush disks cache */
4526 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4527 raw_mbox[0] = FLUSH_SYSTEM;
4528
4529 /* Issue a blocking (interrupts disabled) command to the card */
4530 issue_scb_block(adapter, raw_mbox);
4531
4532 if (atomic_read(&adapter->pend_cmds) > 0)
4533 dev_warn(&adapter->dev->dev, "pending commands!!\n");
4534
4535 /*
4536 * Have a delibrate delay to make sure all the caches are
4537 * actually flushed.
4538 */
4539 for (i = 0; i <= 10; i++)
4540 mdelay(1000);
4541 }
4542
4543 static void
4544 megaraid_remove_one(struct pci_dev *pdev)
4545 {
4546 struct Scsi_Host *host = pci_get_drvdata(pdev);
4547 adapter_t *adapter = (adapter_t *)host->hostdata;
4548 char buf[12] = { 0 };
4549
4550 scsi_remove_host(host);
4551
4552 __megaraid_shutdown(adapter);
4553
4554 /* Free our resources */
4555 if (adapter->flag & BOARD_MEMMAP) {
4556 iounmap((void *)adapter->base);
4557 release_mem_region(adapter->host->base, 128);
4558 } else
4559 release_region(adapter->base, 16);
4560
4561 mega_free_sgl(adapter);
4562
4563 sprintf(buf, "hba%d", adapter->host->host_no);
4564 remove_proc_subtree(buf, mega_proc_dir_entry);
4565
4566 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,
4567 adapter->mega_buffer, adapter->buf_dma_handle);
4568 kfree(adapter->scb_list);
4569 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),
4570 adapter->una_mbox64, adapter->una_mbox64_dma);
4571
4572 scsi_host_put(host);
4573 pci_disable_device(pdev);
4574
4575 hba_count--;
4576 }
4577
4578 static void
4579 megaraid_shutdown(struct pci_dev *pdev)
4580 {
4581 struct Scsi_Host *host = pci_get_drvdata(pdev);
4582 adapter_t *adapter = (adapter_t *)host->hostdata;
4583
4584 __megaraid_shutdown(adapter);
4585 }
4586
4587 static struct pci_device_id megaraid_pci_tbl[] = {
4588 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4589 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4590 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4591 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4592 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4593 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4594 {0,}
4595 };
4596 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
4597
4598 static struct pci_driver megaraid_pci_driver = {
4599 .name = "megaraid_legacy",
4600 .id_table = megaraid_pci_tbl,
4601 .probe = megaraid_probe_one,
4602 .remove = megaraid_remove_one,
4603 .shutdown = megaraid_shutdown,
4604 };
4605
4606 static int __init megaraid_init(void)
4607 {
4608 int error;
4609
4610 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
4611 max_cmd_per_lun = MAX_CMD_PER_LUN;
4612 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
4613 max_mbox_busy_wait = MBOX_BUSY_WAIT;
4614
4615 #ifdef CONFIG_PROC_FS
4616 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
4617 if (!mega_proc_dir_entry) {
4618 printk(KERN_WARNING
4619 "megaraid: failed to create megaraid root\n");
4620 }
4621 #endif
4622 error = pci_register_driver(&megaraid_pci_driver);
4623 if (error) {
4624 #ifdef CONFIG_PROC_FS
4625 remove_proc_entry("megaraid", NULL);
4626 #endif
4627 return error;
4628 }
4629
4630 /*
4631 * Register the driver as a character device, for applications
4632 * to access it for ioctls.
4633 * First argument (major) to register_chrdev implies a dynamic
4634 * major number allocation.
4635 */
4636 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
4637 if (!major) {
4638 printk(KERN_WARNING
4639 "megaraid: failed to register char device\n");
4640 }
4641
4642 return 0;
4643 }
4644
4645 static void __exit megaraid_exit(void)
4646 {
4647 /*
4648 * Unregister the character device interface to the driver.
4649 */
4650 unregister_chrdev(major, "megadev_legacy");
4651
4652 pci_unregister_driver(&megaraid_pci_driver);
4653
4654 #ifdef CONFIG_PROC_FS
4655 remove_proc_entry("megaraid", NULL);
4656 #endif
4657 }
4658
4659 module_init(megaraid_init);
4660 module_exit(megaraid_exit);
4661
4662 /* vi: set ts=8 sw=8 tw=78: */
Linux with added FPC-III support