?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
[linux/fpc-iii.git] / drivers / scsi / megaraid.c
blob0b6e3228610ae08371ec9189ae95511b20e186d4
1 /*
2 *
3 * Linux MegaRAID device driver
4 *
5 * Copyright (c) 2002 LSI Logic Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34 #include <linux/mm.h>
35 #include <linux/fs.h>
36 #include <linux/blkdev.h>
37 #include <asm/uaccess.h>
38 #include <asm/io.h>
39 #include <linux/completion.h>
40 #include <linux/delay.h>
41 #include <linux/proc_fs.h>
42 #include <linux/reboot.h>
43 #include <linux/module.h>
44 #include <linux/list.h>
45 #include <linux/interrupt.h>
46 #include <linux/pci.h>
47 #include <linux/init.h>
48 #include <linux/dma-mapping.h>
49 #include <linux/smp_lock.h>
50 #include <linux/slab.h>
51 #include <scsi/scsicam.h>
52
53 #include "scsi.h"
54 #include <scsi/scsi_host.h>
55
56 #include "megaraid.h"
57
58 #define MEGARAID_MODULE_VERSION "2.00.4"
59
60 MODULE_AUTHOR ("sju@lsil.com");
61 MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
62 MODULE_LICENSE ("GPL");
63 MODULE_VERSION(MEGARAID_MODULE_VERSION);
64
65 static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
66 module_param(max_cmd_per_lun, uint, 0);
67 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)");
68
69 static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
70 module_param(max_sectors_per_io, ushort, 0);
71 MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
72
73
74 static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
75 module_param(max_mbox_busy_wait, ushort, 0);
76 MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
77
78 #define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)
79 #define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)
80 #define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)
81 #define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)
82
83 /*
84 * Global variables
85 */
86
87 static int hba_count;
88 static adapter_t *hba_soft_state[MAX_CONTROLLERS];
89 static struct proc_dir_entry *mega_proc_dir_entry;
90
91 /* For controller re-ordering */
92 static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
93
94 static long
95 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
96
97 /*
98 * The File Operations structure for the serial/ioctl interface of the driver
99 */
100 static const struct file_operations megadev_fops = {
101 .owner = THIS_MODULE,
102 .unlocked_ioctl = megadev_unlocked_ioctl,
103 .open = megadev_open,
104 };
105
106 /*
107 * Array to structures for storing the information about the controllers. This
108 * information is sent to the user level applications, when they do an ioctl
109 * for this information.
110 */
111 static struct mcontroller mcontroller[MAX_CONTROLLERS];
112
113 /* The current driver version */
114 static u32 driver_ver = 0x02000000;
115
116 /* major number used by the device for character interface */
117 static int major;
118
119 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
120
121
122 /*
123 * Debug variable to print some diagnostic messages
124 */
125 static int trace_level;
126
127 /**
128 * mega_setup_mailbox()
129 * @adapter - pointer to our soft state
130 *
131 * Allocates a 8 byte aligned memory for the handshake mailbox.
132 */
133 static int
134 mega_setup_mailbox(adapter_t *adapter)
135 {
136 unsigned long align;
137
138 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
139 sizeof(mbox64_t), &adapter->una_mbox64_dma);
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 = pci_alloc_consistent(adapter->dev,
228 sizeof(mraid_ext_inquiry), &dma_handle);
229
230 if( ext_inq == NULL ) return -1;
231
232 inq = &ext_inq->raid_inq;
233
234 mbox->m_out.xferaddr = (u32)dma_handle;
235
236 /*issue old 0x04 command to adapter */
237 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
238
239 issue_scb_block(adapter, raw_mbox);
240
241 /*
242 * update Enquiry3 and ProductInfo structures with
243 * mraid_inquiry structure
244 */
245 mega_8_to_40ld(inq, inquiry3,
246 (mega_product_info *)&adapter->product_info);
247
248 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
249 ext_inq, dma_handle);
250
251 } else { /*adapter supports 40ld */
252 adapter->flag |= BOARD_40LD;
253
254 /*
255 * get product_info, which is static information and will be
256 * unchanged
257 */
258 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
259 &adapter->product_info,
260 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
261
262 mbox->m_out.xferaddr = prod_info_dma_handle;
263
264 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
265 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
266
267 if ((retval = issue_scb_block(adapter, raw_mbox)))
268 printk(KERN_WARNING
269 "megaraid: Product_info cmd failed with error: %d\n",
270 retval);
271
272 pci_unmap_single(adapter->dev, prod_info_dma_handle,
273 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
274 }
275
276
277 /*
278 * kernel scans the channels from 0 to <= max_channel
279 */
280 adapter->host->max_channel =
281 adapter->product_info.nchannels + NVIRT_CHAN -1;
282
283 adapter->host->max_id = 16; /* max targets per channel */
284
285 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
286
287 adapter->host->cmd_per_lun = max_cmd_per_lun;
288
289 adapter->numldrv = inquiry3->num_ldrv;
290
291 adapter->max_cmds = adapter->product_info.max_commands;
292
293 if(adapter->max_cmds > MAX_COMMANDS)
294 adapter->max_cmds = MAX_COMMANDS;
295
296 adapter->host->can_queue = adapter->max_cmds - 1;
297
298 /*
299 * Get the maximum number of scatter-gather elements supported by this
300 * firmware
301 */
302 mega_get_max_sgl(adapter);
303
304 adapter->host->sg_tablesize = adapter->sglen;
305
306
307 /* use HP firmware and bios version encoding */
308 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
309 sprintf (adapter->fw_version, "%c%d%d.%d%d",
310 adapter->product_info.fw_version[2],
311 adapter->product_info.fw_version[1] >> 8,
312 adapter->product_info.fw_version[1] & 0x0f,
313 adapter->product_info.fw_version[0] >> 8,
314 adapter->product_info.fw_version[0] & 0x0f);
315 sprintf (adapter->bios_version, "%c%d%d.%d%d",
316 adapter->product_info.bios_version[2],
317 adapter->product_info.bios_version[1] >> 8,
318 adapter->product_info.bios_version[1] & 0x0f,
319 adapter->product_info.bios_version[0] >> 8,
320 adapter->product_info.bios_version[0] & 0x0f);
321 } else {
322 memcpy(adapter->fw_version,
323 (char *)adapter->product_info.fw_version, 4);
324 adapter->fw_version[4] = 0;
325
326 memcpy(adapter->bios_version,
327 (char *)adapter->product_info.bios_version, 4);
328
329 adapter->bios_version[4] = 0;
330 }
331
332 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
333 adapter->fw_version, adapter->bios_version, adapter->numldrv);
334
335 /*
336 * Do we support extended (>10 bytes) cdbs
337 */
338 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
339 if (adapter->support_ext_cdb)
340 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
341
342
343 return 0;
344 }
345
346 /**
347 * mega_runpendq()
348 * @adapter - pointer to our soft state
349 *
350 * Runs through the list of pending requests.
351 */
352 static inline void
353 mega_runpendq(adapter_t *adapter)
354 {
355 if(!list_empty(&adapter->pending_list))
356 __mega_runpendq(adapter);
357 }
358
359 /*
360 * megaraid_queue()
361 * @scmd - Issue this scsi command
362 * @done - the callback hook into the scsi mid-layer
363 *
364 * The command queuing entry point for the mid-layer.
365 */
366 static int
367 megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
368 {
369 adapter_t *adapter;
370 scb_t *scb;
371 int busy=0;
372 unsigned long flags;
373
374 adapter = (adapter_t *)scmd->device->host->hostdata;
375
376 scmd->scsi_done = done;
377
378
379 /*
380 * Allocate and build a SCB request
381 * busy flag will be set if mega_build_cmd() command could not
382 * allocate scb. We will return non-zero status in that case.
383 * NOTE: scb can be null even though certain commands completed
384 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
385 * return 0 in that case.
386 */
387
388 spin_lock_irqsave(&adapter->lock, flags);
389 scb = mega_build_cmd(adapter, scmd, &busy);
390 if (!scb)
391 goto out;
392
393 scb->state |= SCB_PENDQ;
394 list_add_tail(&scb->list, &adapter->pending_list);
395
396 /*
397 * Check if the HBA is in quiescent state, e.g., during a
398 * delete logical drive opertion. If it is, don't run
399 * the pending_list.
400 */
401 if (atomic_read(&adapter->quiescent) == 0)
402 mega_runpendq(adapter);
403
404 busy = 0;
405 out:
406 spin_unlock_irqrestore(&adapter->lock, flags);
407 return busy;
408 }
409
410 /**
411 * mega_allocate_scb()
412 * @adapter - pointer to our soft state
413 * @cmd - scsi command from the mid-layer
414 *
415 * Allocate a SCB structure. This is the central structure for controller
416 * commands.
417 */
418 static inline scb_t *
419 mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
420 {
421 struct list_head *head = &adapter->free_list;
422 scb_t *scb;
423
424 /* Unlink command from Free List */
425 if( !list_empty(head) ) {
426
427 scb = list_entry(head->next, scb_t, list);
428
429 list_del_init(head->next);
430
431 scb->state = SCB_ACTIVE;
432 scb->cmd = cmd;
433 scb->dma_type = MEGA_DMA_TYPE_NONE;
434
435 return scb;
436 }
437
438 return NULL;
439 }
440
441 /**
442 * mega_get_ldrv_num()
443 * @adapter - pointer to our soft state
444 * @cmd - scsi mid layer command
445 * @channel - channel on the controller
446 *
447 * Calculate the logical drive number based on the information in scsi command
448 * and the channel number.
449 */
450 static inline int
451 mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
452 {
453 int tgt;
454 int ldrv_num;
455
456 tgt = cmd->device->id;
457
458 if ( tgt > adapter->this_id )
459 tgt--; /* we do not get inquires for initiator id */
460
461 ldrv_num = (channel * 15) + tgt;
462
463
464 /*
465 * If we have a logical drive with boot enabled, project it first
466 */
467 if( adapter->boot_ldrv_enabled ) {
468 if( ldrv_num == 0 ) {
469 ldrv_num = adapter->boot_ldrv;
470 }
471 else {
472 if( ldrv_num <= adapter->boot_ldrv ) {
473 ldrv_num--;
474 }
475 }
476 }
477
478 /*
479 * If "delete logical drive" feature is enabled on this controller.
480 * Do only if at least one delete logical drive operation was done.
481 *
482 * Also, after logical drive deletion, instead of logical drive number,
483 * the value returned should be 0x80+logical drive id.
484 *
485 * These is valid only for IO commands.
486 */
487
488 if (adapter->support_random_del && adapter->read_ldidmap )
489 switch (cmd->cmnd[0]) {
490 case READ_6: /* fall through */
491 case WRITE_6: /* fall through */
492 case READ_10: /* fall through */
493 case WRITE_10:
494 ldrv_num += 0x80;
495 }
496
497 return ldrv_num;
498 }
499
500 /**
501 * mega_build_cmd()
502 * @adapter - pointer to our soft state
503 * @cmd - Prepare using this scsi command
504 * @busy - busy flag if no resources
505 *
506 * Prepares a command and scatter gather list for the controller. This routine
507 * also finds out if the commands is intended for a logical drive or a
508 * physical device and prepares the controller command accordingly.
509 *
510 * We also re-order the logical drives and physical devices based on their
511 * boot settings.
512 */
513 static scb_t *
514 mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
515 {
516 mega_ext_passthru *epthru;
517 mega_passthru *pthru;
518 scb_t *scb;
519 mbox_t *mbox;
520 long seg;
521 char islogical;
522 int max_ldrv_num;
523 int channel = 0;
524 int target = 0;
525 int ldrv_num = 0; /* logical drive number */
526
527
528 /*
529 * filter the internal and ioctl commands
530 */
531 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
532 return (scb_t *)cmd->host_scribble;
533
534 /*
535 * We know what channels our logical drives are on - mega_find_card()
536 */
537 islogical = adapter->logdrv_chan[cmd->device->channel];
538
539 /*
540 * The theory: If physical drive is chosen for boot, all the physical
541 * devices are exported before the logical drives, otherwise physical
542 * devices are pushed after logical drives, in which case - Kernel sees
543 * the physical devices on virtual channel which is obviously converted
544 * to actual channel on the HBA.
545 */
546 if( adapter->boot_pdrv_enabled ) {
547 if( islogical ) {
548 /* logical channel */
549 channel = cmd->device->channel -
550 adapter->product_info.nchannels;
551 }
552 else {
553 /* this is physical channel */
554 channel = cmd->device->channel;
555 target = cmd->device->id;
556
557 /*
558 * boot from a physical disk, that disk needs to be
559 * exposed first IF both the channels are SCSI, then
560 * booting from the second channel is not allowed.
561 */
562 if( target == 0 ) {
563 target = adapter->boot_pdrv_tgt;
564 }
565 else if( target == adapter->boot_pdrv_tgt ) {
566 target = 0;
567 }
568 }
569 }
570 else {
571 if( islogical ) {
572 /* this is the logical channel */
573 channel = cmd->device->channel;
574 }
575 else {
576 /* physical channel */
577 channel = cmd->device->channel - NVIRT_CHAN;
578 target = cmd->device->id;
579 }
580 }
581
582
583 if(islogical) {
584
585 /* have just LUN 0 for each target on virtual channels */
586 if (cmd->device->lun) {
587 cmd->result = (DID_BAD_TARGET << 16);
588 cmd->scsi_done(cmd);
589 return NULL;
590 }
591
592 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
593
594
595 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
596 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
597
598 /*
599 * max_ldrv_num increases by 0x80 if some logical drive was
600 * deleted.
601 */
602 if(adapter->read_ldidmap)
603 max_ldrv_num += 0x80;
604
605 if(ldrv_num > max_ldrv_num ) {
606 cmd->result = (DID_BAD_TARGET << 16);
607 cmd->scsi_done(cmd);
608 return NULL;
609 }
610
611 }
612 else {
613 if( cmd->device->lun > 7) {
614 /*
615 * Do not support lun >7 for physically accessed
616 * devices
617 */
618 cmd->result = (DID_BAD_TARGET << 16);
619 cmd->scsi_done(cmd);
620 return NULL;
621 }
622 }
623
624 /*
625 *
626 * Logical drive commands
627 *
628 */
629 if(islogical) {
630 switch (cmd->cmnd[0]) {
631 case TEST_UNIT_READY:
632 #if MEGA_HAVE_CLUSTERING
633 /*
634 * Do we support clustering and is the support enabled
635 * If no, return success always
636 */
637 if( !adapter->has_cluster ) {
638 cmd->result = (DID_OK << 16);
639 cmd->scsi_done(cmd);
640 return NULL;
641 }
642
643 if(!(scb = mega_allocate_scb(adapter, cmd))) {
644 *busy = 1;
645 return NULL;
646 }
647
648 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
649 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
650 scb->raw_mbox[3] = ldrv_num;
651
652 scb->dma_direction = PCI_DMA_NONE;
653
654 return scb;
655 #else
656 cmd->result = (DID_OK << 16);
657 cmd->scsi_done(cmd);
658 return NULL;
659 #endif
660
661 case MODE_SENSE: {
662 char *buf;
663 struct scatterlist *sg;
664
665 sg = scsi_sglist(cmd);
666 buf = kmap_atomic(sg_page(sg), KM_IRQ0) + sg->offset;
667
668 memset(buf, 0, cmd->cmnd[4]);
669 kunmap_atomic(buf - sg->offset, KM_IRQ0);
670
671 cmd->result = (DID_OK << 16);
672 cmd->scsi_done(cmd);
673 return NULL;
674 }
675
676 case READ_CAPACITY:
677 case INQUIRY:
678
679 if(!(adapter->flag & (1L << cmd->device->channel))) {
680
681 printk(KERN_NOTICE
682 "scsi%d: scanning scsi channel %d ",
683 adapter->host->host_no,
684 cmd->device->channel);
685 printk("for logical drives.\n");
686
687 adapter->flag |= (1L << cmd->device->channel);
688 }
689
690 /* Allocate a SCB and initialize passthru */
691 if(!(scb = mega_allocate_scb(adapter, cmd))) {
692 *busy = 1;
693 return NULL;
694 }
695 pthru = scb->pthru;
696
697 mbox = (mbox_t *)scb->raw_mbox;
698 memset(mbox, 0, sizeof(scb->raw_mbox));
699 memset(pthru, 0, sizeof(mega_passthru));
700
701 pthru->timeout = 0;
702 pthru->ars = 1;
703 pthru->reqsenselen = 14;
704 pthru->islogical = 1;
705 pthru->logdrv = ldrv_num;
706 pthru->cdblen = cmd->cmd_len;
707 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
708
709 if( adapter->has_64bit_addr ) {
710 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
711 }
712 else {
713 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
714 }
715
716 scb->dma_direction = PCI_DMA_FROMDEVICE;
717
718 pthru->numsgelements = mega_build_sglist(adapter, scb,
719 &pthru->dataxferaddr, &pthru->dataxferlen);
720
721 mbox->m_out.xferaddr = scb->pthru_dma_addr;
722
723 return scb;
724
725 case READ_6:
726 case WRITE_6:
727 case READ_10:
728 case WRITE_10:
729 case READ_12:
730 case WRITE_12:
731
732 /* Allocate a SCB and initialize mailbox */
733 if(!(scb = mega_allocate_scb(adapter, cmd))) {
734 *busy = 1;
735 return NULL;
736 }
737 mbox = (mbox_t *)scb->raw_mbox;
738
739 memset(mbox, 0, sizeof(scb->raw_mbox));
740 mbox->m_out.logdrv = ldrv_num;
741
742 /*
743 * A little hack: 2nd bit is zero for all scsi read
744 * commands and is set for all scsi write commands
745 */
746 if( adapter->has_64bit_addr ) {
747 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
748 MEGA_MBOXCMD_LWRITE64:
749 MEGA_MBOXCMD_LREAD64 ;
750 }
751 else {
752 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
753 MEGA_MBOXCMD_LWRITE:
754 MEGA_MBOXCMD_LREAD ;
755 }
756
757 /*
758 * 6-byte READ(0x08) or WRITE(0x0A) cdb
759 */
760 if( cmd->cmd_len == 6 ) {
761 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
762 mbox->m_out.lba =
763 ((u32)cmd->cmnd[1] << 16) |
764 ((u32)cmd->cmnd[2] << 8) |
765 (u32)cmd->cmnd[3];
766
767 mbox->m_out.lba &= 0x1FFFFF;
768
769 #if MEGA_HAVE_STATS
770 /*
771 * Take modulo 0x80, since the logical drive
772 * number increases by 0x80 when a logical
773 * drive was deleted
774 */
775 if (*cmd->cmnd == READ_6) {
776 adapter->nreads[ldrv_num%0x80]++;
777 adapter->nreadblocks[ldrv_num%0x80] +=
778 mbox->m_out.numsectors;
779 } else {
780 adapter->nwrites[ldrv_num%0x80]++;
781 adapter->nwriteblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 }
784 #endif
785 }
786
787 /*
788 * 10-byte READ(0x28) or WRITE(0x2A) cdb
789 */
790 if( cmd->cmd_len == 10 ) {
791 mbox->m_out.numsectors =
792 (u32)cmd->cmnd[8] |
793 ((u32)cmd->cmnd[7] << 8);
794 mbox->m_out.lba =
795 ((u32)cmd->cmnd[2] << 24) |
796 ((u32)cmd->cmnd[3] << 16) |
797 ((u32)cmd->cmnd[4] << 8) |
798 (u32)cmd->cmnd[5];
799
800 #if MEGA_HAVE_STATS
801 if (*cmd->cmnd == READ_10) {
802 adapter->nreads[ldrv_num%0x80]++;
803 adapter->nreadblocks[ldrv_num%0x80] +=
804 mbox->m_out.numsectors;
805 } else {
806 adapter->nwrites[ldrv_num%0x80]++;
807 adapter->nwriteblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 }
810 #endif
811 }
812
813 /*
814 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
815 */
816 if( cmd->cmd_len == 12 ) {
817 mbox->m_out.lba =
818 ((u32)cmd->cmnd[2] << 24) |
819 ((u32)cmd->cmnd[3] << 16) |
820 ((u32)cmd->cmnd[4] << 8) |
821 (u32)cmd->cmnd[5];
822
823 mbox->m_out.numsectors =
824 ((u32)cmd->cmnd[6] << 24) |
825 ((u32)cmd->cmnd[7] << 16) |
826 ((u32)cmd->cmnd[8] << 8) |
827 (u32)cmd->cmnd[9];
828
829 #if MEGA_HAVE_STATS
830 if (*cmd->cmnd == READ_12) {
831 adapter->nreads[ldrv_num%0x80]++;
832 adapter->nreadblocks[ldrv_num%0x80] +=
833 mbox->m_out.numsectors;
834 } else {
835 adapter->nwrites[ldrv_num%0x80]++;
836 adapter->nwriteblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 }
839 #endif
840 }
841
842 /*
843 * If it is a read command
844 */
845 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
846 scb->dma_direction = PCI_DMA_FROMDEVICE;
847 }
848 else {
849 scb->dma_direction = PCI_DMA_TODEVICE;
850 }
851
852 /* Calculate Scatter-Gather info */
853 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
854 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
855
856 return scb;
857
858 #if MEGA_HAVE_CLUSTERING
859 case RESERVE: /* Fall through */
860 case RELEASE:
861
862 /*
863 * Do we support clustering and is the support enabled
864 */
865 if( ! adapter->has_cluster ) {
866
867 cmd->result = (DID_BAD_TARGET << 16);
868 cmd->scsi_done(cmd);
869 return NULL;
870 }
871
872 /* Allocate a SCB and initialize mailbox */
873 if(!(scb = mega_allocate_scb(adapter, cmd))) {
874 *busy = 1;
875 return NULL;
876 }
877
878 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
879 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
880 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
881
882 scb->raw_mbox[3] = ldrv_num;
883
884 scb->dma_direction = PCI_DMA_NONE;
885
886 return scb;
887 #endif
888
889 default:
890 cmd->result = (DID_BAD_TARGET << 16);
891 cmd->scsi_done(cmd);
892 return NULL;
893 }
894 }
895
896 /*
897 * Passthru drive commands
898 */
899 else {
900 /* Allocate a SCB and initialize passthru */
901 if(!(scb = mega_allocate_scb(adapter, cmd))) {
902 *busy = 1;
903 return NULL;
904 }
905
906 mbox = (mbox_t *)scb->raw_mbox;
907 memset(mbox, 0, sizeof(scb->raw_mbox));
908
909 if( adapter->support_ext_cdb ) {
910
911 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
912 channel, target);
913
914 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
915
916 mbox->m_out.xferaddr = scb->epthru_dma_addr;
917
918 }
919 else {
920
921 pthru = mega_prepare_passthru(adapter, scb, cmd,
922 channel, target);
923
924 /* Initialize mailbox */
925 if( adapter->has_64bit_addr ) {
926 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
927 }
928 else {
929 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
930 }
931
932 mbox->m_out.xferaddr = scb->pthru_dma_addr;
933
934 }
935 return scb;
936 }
937 return NULL;
938 }
939
940
941 /**
942 * mega_prepare_passthru()
943 * @adapter - pointer to our soft state
944 * @scb - our scsi control block
945 * @cmd - scsi command from the mid-layer
946 * @channel - actual channel on the controller
947 * @target - actual id on the controller.
948 *
949 * prepare a command for the scsi physical devices.
950 */
951 static mega_passthru *
952 mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
953 int channel, int target)
954 {
955 mega_passthru *pthru;
956
957 pthru = scb->pthru;
958 memset(pthru, 0, sizeof (mega_passthru));
959
960 /* 0=6sec/1=60sec/2=10min/3=3hrs */
961 pthru->timeout = 2;
962
963 pthru->ars = 1;
964 pthru->reqsenselen = 14;
965 pthru->islogical = 0;
966
967 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
968
969 pthru->target = (adapter->flag & BOARD_40LD) ?
970 (channel << 4) | target : target;
971
972 pthru->cdblen = cmd->cmd_len;
973 pthru->logdrv = cmd->device->lun;
974
975 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
976
977 /* Not sure about the direction */
978 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
979
980 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
981 switch (cmd->cmnd[0]) {
982 case INQUIRY:
983 case READ_CAPACITY:
984 if(!(adapter->flag & (1L << cmd->device->channel))) {
985
986 printk(KERN_NOTICE
987 "scsi%d: scanning scsi channel %d [P%d] ",
988 adapter->host->host_no,
989 cmd->device->channel, channel);
990 printk("for physical devices.\n");
991
992 adapter->flag |= (1L << cmd->device->channel);
993 }
994 /* Fall through */
995 default:
996 pthru->numsgelements = mega_build_sglist(adapter, scb,
997 &pthru->dataxferaddr, &pthru->dataxferlen);
998 break;
999 }
1000 return pthru;
1001 }
1002
1003
1004 /**
1005 * mega_prepare_extpassthru()
1006 * @adapter - pointer to our soft state
1007 * @scb - our scsi control block
1008 * @cmd - scsi command from the mid-layer
1009 * @channel - actual channel on the controller
1010 * @target - actual id on the controller.
1011 *
1012 * prepare a command for the scsi physical devices. This rountine prepares
1013 * commands for devices which can take extended CDBs (>10 bytes)
1014 */
1015 static mega_ext_passthru *
1016 mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1017 int channel, int target)
1018 {
1019 mega_ext_passthru *epthru;
1020
1021 epthru = scb->epthru;
1022 memset(epthru, 0, sizeof(mega_ext_passthru));
1023
1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1025 epthru->timeout = 2;
1026
1027 epthru->ars = 1;
1028 epthru->reqsenselen = 14;
1029 epthru->islogical = 0;
1030
1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1032 epthru->target = (adapter->flag & BOARD_40LD) ?
1033 (channel << 4) | target : target;
1034
1035 epthru->cdblen = cmd->cmd_len;
1036 epthru->logdrv = cmd->device->lun;
1037
1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1039
1040 /* Not sure about the direction */
1041 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1042
1043 switch(cmd->cmnd[0]) {
1044 case INQUIRY:
1045 case READ_CAPACITY:
1046 if(!(adapter->flag & (1L << cmd->device->channel))) {
1047
1048 printk(KERN_NOTICE
1049 "scsi%d: scanning scsi channel %d [P%d] ",
1050 adapter->host->host_no,
1051 cmd->device->channel, channel);
1052 printk("for physical devices.\n");
1053
1054 adapter->flag |= (1L << cmd->device->channel);
1055 }
1056 /* Fall through */
1057 default:
1058 epthru->numsgelements = mega_build_sglist(adapter, scb,
1059 &epthru->dataxferaddr, &epthru->dataxferlen);
1060 break;
1061 }
1062
1063 return epthru;
1064 }
1065
1066 static void
1067 __mega_runpendq(adapter_t *adapter)
1068 {
1069 scb_t *scb;
1070 struct list_head *pos, *next;
1071
1072 /* Issue any pending commands to the card */
1073 list_for_each_safe(pos, next, &adapter->pending_list) {
1074
1075 scb = list_entry(pos, scb_t, list);
1076
1077 if( !(scb->state & SCB_ISSUED) ) {
1078
1079 if( issue_scb(adapter, scb) != 0 )
1080 return;
1081 }
1082 }
1083
1084 return;
1085 }
1086
1087
1088 /**
1089 * issue_scb()
1090 * @adapter - pointer to our soft state
1091 * @scb - scsi control block
1092 *
1093 * Post a command to the card if the mailbox is available, otherwise return
1094 * busy. We also take the scb from the pending list if the mailbox is
1095 * available.
1096 */
1097 static int
1098 issue_scb(adapter_t *adapter, scb_t *scb)
1099 {
1100 volatile mbox64_t *mbox64 = adapter->mbox64;
1101 volatile mbox_t *mbox = adapter->mbox;
1102 unsigned int i = 0;
1103
1104 if(unlikely(mbox->m_in.busy)) {
1105 do {
1106 udelay(1);
1107 i++;
1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1109
1110 if(mbox->m_in.busy) return -1;
1111 }
1112
1113 /* Copy mailbox data into host structure */
1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1115 sizeof(struct mbox_out));
1116
1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1118 mbox->m_in.busy = 1; /* Set busy */
1119
1120
1121 /*
1122 * Increment the pending queue counter
1123 */
1124 atomic_inc(&adapter->pend_cmds);
1125
1126 switch (mbox->m_out.cmd) {
1127 case MEGA_MBOXCMD_LREAD64:
1128 case MEGA_MBOXCMD_LWRITE64:
1129 case MEGA_MBOXCMD_PASSTHRU64:
1130 case MEGA_MBOXCMD_EXTPTHRU:
1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1132 mbox64->xfer_segment_hi = 0;
1133 mbox->m_out.xferaddr = 0xFFFFFFFF;
1134 break;
1135 default:
1136 mbox64->xfer_segment_lo = 0;
1137 mbox64->xfer_segment_hi = 0;
1138 }
1139
1140 /*
1141 * post the command
1142 */
1143 scb->state |= SCB_ISSUED;
1144
1145 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1146 mbox->m_in.poll = 0;
1147 mbox->m_in.ack = 0;
1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1149 }
1150 else {
1151 irq_enable(adapter);
1152 issue_command(adapter);
1153 }
1154
1155 return 0;
1156 }
1157
1158 /*
1159 * Wait until the controller's mailbox is available
1160 */
1161 static inline int
1162 mega_busywait_mbox (adapter_t *adapter)
1163 {
1164 if (adapter->mbox->m_in.busy)
1165 return __mega_busywait_mbox(adapter);
1166 return 0;
1167 }
1168
1169 /**
1170 * issue_scb_block()
1171 * @adapter - pointer to our soft state
1172 * @raw_mbox - the mailbox
1173 *
1174 * Issue a scb in synchronous and non-interrupt mode
1175 */
1176 static int
1177 issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1178 {
1179 volatile mbox64_t *mbox64 = adapter->mbox64;
1180 volatile mbox_t *mbox = adapter->mbox;
1181 u8 byte;
1182
1183 /* Wait until mailbox is free */
1184 if(mega_busywait_mbox (adapter))
1185 goto bug_blocked_mailbox;
1186
1187 /* Copy mailbox data into host structure */
1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1189 mbox->m_out.cmdid = 0xFE;
1190 mbox->m_in.busy = 1;
1191
1192 switch (raw_mbox[0]) {
1193 case MEGA_MBOXCMD_LREAD64:
1194 case MEGA_MBOXCMD_LWRITE64:
1195 case MEGA_MBOXCMD_PASSTHRU64:
1196 case MEGA_MBOXCMD_EXTPTHRU:
1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1198 mbox64->xfer_segment_hi = 0;
1199 mbox->m_out.xferaddr = 0xFFFFFFFF;
1200 break;
1201 default:
1202 mbox64->xfer_segment_lo = 0;
1203 mbox64->xfer_segment_hi = 0;
1204 }
1205
1206 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1207 mbox->m_in.poll = 0;
1208 mbox->m_in.ack = 0;
1209 mbox->m_in.numstatus = 0xFF;
1210 mbox->m_in.status = 0xFF;
1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1212
1213 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1214 cpu_relax();
1215
1216 mbox->m_in.numstatus = 0xFF;
1217
1218 while( (volatile u8)mbox->m_in.poll != 0x77 )
1219 cpu_relax();
1220
1221 mbox->m_in.poll = 0;
1222 mbox->m_in.ack = 0x77;
1223
1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1225
1226 while(RDINDOOR(adapter) & 0x2)
1227 cpu_relax();
1228 }
1229 else {
1230 irq_disable(adapter);
1231 issue_command(adapter);
1232
1233 while (!((byte = irq_state(adapter)) & INTR_VALID))
1234 cpu_relax();
1235
1236 set_irq_state(adapter, byte);
1237 irq_enable(adapter);
1238 irq_ack(adapter);
1239 }
1240
1241 return mbox->m_in.status;
1242
1243 bug_blocked_mailbox:
1244 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1245 udelay (1000);
1246 return -1;
1247 }
1248
1249
1250 /**
1251 * megaraid_isr_iomapped()
1252 * @irq - irq
1253 * @devp - pointer to our soft state
1254 *
1255 * Interrupt service routine for io-mapped controllers.
1256 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1257 * and service the completed commands.
1258 */
1259 static irqreturn_t
1260 megaraid_isr_iomapped(int irq, void *devp)
1261 {
1262 adapter_t *adapter = devp;
1263 unsigned long flags;
1264 u8 status;
1265 u8 nstatus;
1266 u8 completed[MAX_FIRMWARE_STATUS];
1267 u8 byte;
1268 int handled = 0;
1269
1270
1271 /*
1272 * loop till F/W has more commands for us to complete.
1273 */
1274 spin_lock_irqsave(&adapter->lock, flags);
1275
1276 do {
1277 /* Check if a valid interrupt is pending */
1278 byte = irq_state(adapter);
1279 if( (byte & VALID_INTR_BYTE) == 0 ) {
1280 /*
1281 * No more pending commands
1282 */
1283 goto out_unlock;
1284 }
1285 set_irq_state(adapter, byte);
1286
1287 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1288 == 0xFF)
1289 cpu_relax();
1290 adapter->mbox->m_in.numstatus = 0xFF;
1291
1292 status = adapter->mbox->m_in.status;
1293
1294 /*
1295 * decrement the pending queue counter
1296 */
1297 atomic_sub(nstatus, &adapter->pend_cmds);
1298
1299 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1300 nstatus);
1301
1302 /* Acknowledge interrupt */
1303 irq_ack(adapter);
1304
1305 mega_cmd_done(adapter, completed, nstatus, status);
1306
1307 mega_rundoneq(adapter);
1308
1309 handled = 1;
1310
1311 /* Loop through any pending requests */
1312 if(atomic_read(&adapter->quiescent) == 0) {
1313 mega_runpendq(adapter);
1314 }
1315
1316 } while(1);
1317
1318 out_unlock:
1319
1320 spin_unlock_irqrestore(&adapter->lock, flags);
1321
1322 return IRQ_RETVAL(handled);
1323 }
1324
1325
1326 /**
1327 * megaraid_isr_memmapped()
1328 * @irq - irq
1329 * @devp - pointer to our soft state
1330 *
1331 * Interrupt service routine for memory-mapped controllers.
1332 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1333 * and service the completed commands.
1334 */
1335 static irqreturn_t
1336 megaraid_isr_memmapped(int irq, void *devp)
1337 {
1338 adapter_t *adapter = devp;
1339 unsigned long flags;
1340 u8 status;
1341 u32 dword = 0;
1342 u8 nstatus;
1343 u8 completed[MAX_FIRMWARE_STATUS];
1344 int handled = 0;
1345
1346
1347 /*
1348 * loop till F/W has more commands for us to complete.
1349 */
1350 spin_lock_irqsave(&adapter->lock, flags);
1351
1352 do {
1353 /* Check if a valid interrupt is pending */
1354 dword = RDOUTDOOR(adapter);
1355 if(dword != 0x10001234) {
1356 /*
1357 * No more pending commands
1358 */
1359 goto out_unlock;
1360 }
1361 WROUTDOOR(adapter, 0x10001234);
1362
1363 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1364 == 0xFF) {
1365 cpu_relax();
1366 }
1367 adapter->mbox->m_in.numstatus = 0xFF;
1368
1369 status = adapter->mbox->m_in.status;
1370
1371 /*
1372 * decrement the pending queue counter
1373 */
1374 atomic_sub(nstatus, &adapter->pend_cmds);
1375
1376 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1377 nstatus);
1378
1379 /* Acknowledge interrupt */
1380 WRINDOOR(adapter, 0x2);
1381
1382 handled = 1;
1383
1384 while( RDINDOOR(adapter) & 0x02 )
1385 cpu_relax();
1386
1387 mega_cmd_done(adapter, completed, nstatus, status);
1388
1389 mega_rundoneq(adapter);
1390
1391 /* Loop through any pending requests */
1392 if(atomic_read(&adapter->quiescent) == 0) {
1393 mega_runpendq(adapter);
1394 }
1395
1396 } while(1);
1397
1398 out_unlock:
1399
1400 spin_unlock_irqrestore(&adapter->lock, flags);
1401
1402 return IRQ_RETVAL(handled);
1403 }
1404 /**
1405 * mega_cmd_done()
1406 * @adapter - pointer to our soft state
1407 * @completed - array of ids of completed commands
1408 * @nstatus - number of completed commands
1409 * @status - status of the last command completed
1410 *
1411 * Complete the comamnds and call the scsi mid-layer callback hooks.
1412 */
1413 static void
1414 mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1415 {
1416 mega_ext_passthru *epthru = NULL;
1417 struct scatterlist *sgl;
1418 Scsi_Cmnd *cmd = NULL;
1419 mega_passthru *pthru = NULL;
1420 mbox_t *mbox = NULL;
1421 u8 c;
1422 scb_t *scb;
1423 int islogical;
1424 int cmdid;
1425 int i;
1426
1427 /*
1428 * for all the commands completed, call the mid-layer callback routine
1429 * and free the scb.
1430 */
1431 for( i = 0; i < nstatus; i++ ) {
1432
1433 cmdid = completed[i];
1434
1435 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1436 scb = &adapter->int_scb;
1437 cmd = scb->cmd;
1438 mbox = (mbox_t *)scb->raw_mbox;
1439
1440 /*
1441 * Internal command interface do not fire the extended
1442 * passthru or 64-bit passthru
1443 */
1444 pthru = scb->pthru;
1445
1446 }
1447 else {
1448 scb = &adapter->scb_list[cmdid];
1449
1450 /*
1451 * Make sure f/w has completed a valid command
1452 */
1453 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1454 printk(KERN_CRIT
1455 "megaraid: invalid command ");
1456 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1457 cmdid, scb->state, scb->cmd);
1458
1459 continue;
1460 }
1461
1462 /*
1463 * Was a abort issued for this command
1464 */
1465 if( scb->state & SCB_ABORT ) {
1466
1467 printk(KERN_WARNING
1468 "megaraid: aborted cmd %lx[%x] complete.\n",
1469 scb->cmd->serial_number, scb->idx);
1470
1471 scb->cmd->result = (DID_ABORT << 16);
1472
1473 list_add_tail(SCSI_LIST(scb->cmd),
1474 &adapter->completed_list);
1475
1476 mega_free_scb(adapter, scb);
1477
1478 continue;
1479 }
1480
1481 /*
1482 * Was a reset issued for this command
1483 */
1484 if( scb->state & SCB_RESET ) {
1485
1486 printk(KERN_WARNING
1487 "megaraid: reset cmd %lx[%x] complete.\n",
1488 scb->cmd->serial_number, scb->idx);
1489
1490 scb->cmd->result = (DID_RESET << 16);
1491
1492 list_add_tail(SCSI_LIST(scb->cmd),
1493 &adapter->completed_list);
1494
1495 mega_free_scb (adapter, scb);
1496
1497 continue;
1498 }
1499
1500 cmd = scb->cmd;
1501 pthru = scb->pthru;
1502 epthru = scb->epthru;
1503 mbox = (mbox_t *)scb->raw_mbox;
1504
1505 #if MEGA_HAVE_STATS
1506 {
1507
1508 int logdrv = mbox->m_out.logdrv;
1509
1510 islogical = adapter->logdrv_chan[cmd->channel];
1511 /*
1512 * Maintain an error counter for the logical drive.
1513 * Some application like SNMP agent need such
1514 * statistics
1515 */
1516 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1517 cmd->cmnd[0] == READ_10 ||
1518 cmd->cmnd[0] == READ_12)) {
1519 /*
1520 * Logical drive number increases by 0x80 when
1521 * a logical drive is deleted
1522 */
1523 adapter->rd_errors[logdrv%0x80]++;
1524 }
1525
1526 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1527 cmd->cmnd[0] == WRITE_10 ||
1528 cmd->cmnd[0] == WRITE_12)) {
1529 /*
1530 * Logical drive number increases by 0x80 when
1531 * a logical drive is deleted
1532 */
1533 adapter->wr_errors[logdrv%0x80]++;
1534 }
1535
1536 }
1537 #endif
1538 }
1539
1540 /*
1541 * Do not return the presence of hard disk on the channel so,
1542 * inquiry sent, and returned data==hard disk or removable
1543 * hard disk and not logical, request should return failure! -
1544 * PJ
1545 */
1546 islogical = adapter->logdrv_chan[cmd->device->channel];
1547 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1548
1549 sgl = scsi_sglist(cmd);
1550 if( sg_page(sgl) ) {
1551 c = *(unsigned char *) sg_virt(&sgl[0]);
1552 } else {
1553 printk(KERN_WARNING
1554 "megaraid: invalid sg.\n");
1555 c = 0;
1556 }
1557
1558 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1559 ((c & 0x1F ) == TYPE_DISK)) {
1560 status = 0xF0;
1561 }
1562 }
1563
1564 /* clear result; otherwise, success returns corrupt value */
1565 cmd->result = 0;
1566
1567 /* Convert MegaRAID status to Linux error code */
1568 switch (status) {
1569 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1570 cmd->result |= (DID_OK << 16);
1571 break;
1572
1573 case 0x02: /* ERROR_ABORTED, i.e.
1574 SCSI_STATUS_CHECK_CONDITION */
1575
1576 /* set sense_buffer and result fields */
1577 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1578 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1579
1580 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1581 14);
1582
1583 cmd->result = (DRIVER_SENSE << 24) |
1584 (DID_OK << 16) |
1585 (CHECK_CONDITION << 1);
1586 }
1587 else {
1588 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1589
1590 memcpy(cmd->sense_buffer,
1591 epthru->reqsensearea, 14);
1592
1593 cmd->result = (DRIVER_SENSE << 24) |
1594 (DID_OK << 16) |
1595 (CHECK_CONDITION << 1);
1596 } else {
1597 cmd->sense_buffer[0] = 0x70;
1598 cmd->sense_buffer[2] = ABORTED_COMMAND;
1599 cmd->result |= (CHECK_CONDITION << 1);
1600 }
1601 }
1602 break;
1603
1604 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1605 SCSI_STATUS_BUSY */
1606 cmd->result |= (DID_BUS_BUSY << 16) | status;
1607 break;
1608
1609 default:
1610 #if MEGA_HAVE_CLUSTERING
1611 /*
1612 * If TEST_UNIT_READY fails, we know
1613 * MEGA_RESERVATION_STATUS failed
1614 */
1615 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1616 cmd->result |= (DID_ERROR << 16) |
1617 (RESERVATION_CONFLICT << 1);
1618 }
1619 else
1620 /*
1621 * Error code returned is 1 if Reserve or Release
1622 * failed or the input parameter is invalid
1623 */
1624 if( status == 1 &&
1625 (cmd->cmnd[0] == RESERVE ||
1626 cmd->cmnd[0] == RELEASE) ) {
1627
1628 cmd->result |= (DID_ERROR << 16) |
1629 (RESERVATION_CONFLICT << 1);
1630 }
1631 else
1632 #endif
1633 cmd->result |= (DID_BAD_TARGET << 16)|status;
1634 }
1635
1636 /*
1637 * Only free SCBs for the commands coming down from the
1638 * mid-layer, not for which were issued internally
1639 *
1640 * For internal command, restore the status returned by the
1641 * firmware so that user can interpret it.
1642 */
1643 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1644 cmd->result = status;
1645
1646 /*
1647 * Remove the internal command from the pending list
1648 */
1649 list_del_init(&scb->list);
1650 scb->state = SCB_FREE;
1651 }
1652 else {
1653 mega_free_scb(adapter, scb);
1654 }
1655
1656 /* Add Scsi_Command to end of completed queue */
1657 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1658 }
1659 }
1660
1661
1662 /*
1663 * mega_runpendq()
1664 *
1665 * Run through the list of completed requests and finish it
1666 */
1667 static void
1668 mega_rundoneq (adapter_t *adapter)
1669 {
1670 Scsi_Cmnd *cmd;
1671 struct list_head *pos;
1672
1673 list_for_each(pos, &adapter->completed_list) {
1674
1675 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1676
1677 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1678 cmd->scsi_done(cmd);
1679 }
1680
1681 INIT_LIST_HEAD(&adapter->completed_list);
1682 }
1683
1684
1685 /*
1686 * Free a SCB structure
1687 * Note: We assume the scsi commands associated with this scb is not free yet.
1688 */
1689 static void
1690 mega_free_scb(adapter_t *adapter, scb_t *scb)
1691 {
1692 switch( scb->dma_type ) {
1693
1694 case MEGA_DMA_TYPE_NONE:
1695 break;
1696
1697 case MEGA_SGLIST:
1698 scsi_dma_unmap(scb->cmd);
1699 break;
1700 default:
1701 break;
1702 }
1703
1704 /*
1705 * Remove from the pending list
1706 */
1707 list_del_init(&scb->list);
1708
1709 /* Link the scb back into free list */
1710 scb->state = SCB_FREE;
1711 scb->cmd = NULL;
1712
1713 list_add(&scb->list, &adapter->free_list);
1714 }
1715
1716
1717 static int
1718 __mega_busywait_mbox (adapter_t *adapter)
1719 {
1720 volatile mbox_t *mbox = adapter->mbox;
1721 long counter;
1722
1723 for (counter = 0; counter < 10000; counter++) {
1724 if (!mbox->m_in.busy)
1725 return 0;
1726 udelay(100);
1727 cond_resched();
1728 }
1729 return -1; /* give up after 1 second */
1730 }
1731
1732 /*
1733 * Copies data to SGLIST
1734 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1735 */
1736 static int
1737 mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1738 {
1739 struct scatterlist *sg;
1740 Scsi_Cmnd *cmd;
1741 int sgcnt;
1742 int idx;
1743
1744 cmd = scb->cmd;
1745
1746 /*
1747 * Copy Scatter-Gather list info into controller structure.
1748 *
1749 * The number of sg elements returned must not exceed our limit
1750 */
1751 sgcnt = scsi_dma_map(cmd);
1752
1753 scb->dma_type = MEGA_SGLIST;
1754
1755 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
1756
1757 *len = 0;
1758
1759 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
1760 sg = scsi_sglist(cmd);
1761 scb->dma_h_bulkdata = sg_dma_address(sg);
1762 *buf = (u32)scb->dma_h_bulkdata;
1763 *len = sg_dma_len(sg);
1764 return 0;
1765 }
1766
1767 scsi_for_each_sg(cmd, sg, sgcnt, idx) {
1768 if (adapter->has_64bit_addr) {
1769 scb->sgl64[idx].address = sg_dma_address(sg);
1770 *len += scb->sgl64[idx].length = sg_dma_len(sg);
1771 } else {
1772 scb->sgl[idx].address = sg_dma_address(sg);
1773 *len += scb->sgl[idx].length = sg_dma_len(sg);
1774 }
1775 }
1776
1777 /* Reset pointer and length fields */
1778 *buf = scb->sgl_dma_addr;
1779
1780 /* Return count of SG requests */
1781 return sgcnt;
1782 }
1783
1784
1785 /*
1786 * mega_8_to_40ld()
1787 *
1788 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1789 * Enquiry3 structures for later use
1790 */
1791 static void
1792 mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1793 mega_product_info *product_info)
1794 {
1795 int i;
1796
1797 product_info->max_commands = inquiry->adapter_info.max_commands;
1798 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1799 product_info->nchannels = inquiry->adapter_info.nchannels;
1800
1801 for (i = 0; i < 4; i++) {
1802 product_info->fw_version[i] =
1803 inquiry->adapter_info.fw_version[i];
1804
1805 product_info->bios_version[i] =
1806 inquiry->adapter_info.bios_version[i];
1807 }
1808 enquiry3->cache_flush_interval =
1809 inquiry->adapter_info.cache_flush_interval;
1810
1811 product_info->dram_size = inquiry->adapter_info.dram_size;
1812
1813 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1814
1815 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1816 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1817 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1818 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1819 }
1820
1821 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1822 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1823 }
1824
1825 static inline void
1826 mega_free_sgl(adapter_t *adapter)
1827 {
1828 scb_t *scb;
1829 int i;
1830
1831 for(i = 0; i < adapter->max_cmds; i++) {
1832
1833 scb = &adapter->scb_list[i];
1834
1835 if( scb->sgl64 ) {
1836 pci_free_consistent(adapter->dev,
1837 sizeof(mega_sgl64) * adapter->sglen,
1838 scb->sgl64,
1839 scb->sgl_dma_addr);
1840
1841 scb->sgl64 = NULL;
1842 }
1843
1844 if( scb->pthru ) {
1845 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1846 scb->pthru, scb->pthru_dma_addr);
1847
1848 scb->pthru = NULL;
1849 }
1850
1851 if( scb->epthru ) {
1852 pci_free_consistent(adapter->dev,
1853 sizeof(mega_ext_passthru),
1854 scb->epthru, scb->epthru_dma_addr);
1855
1856 scb->epthru = NULL;
1857 }
1858
1859 }
1860 }
1861
1862
1863 /*
1864 * Get information about the card/driver
1865 */
1866 const char *
1867 megaraid_info(struct Scsi_Host *host)
1868 {
1869 static char buffer[512];
1870 adapter_t *adapter;
1871
1872 adapter = (adapter_t *)host->hostdata;
1873
1874 sprintf (buffer,
1875 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1876 adapter->fw_version, adapter->product_info.max_commands,
1877 adapter->host->max_id, adapter->host->max_channel,
1878 adapter->host->max_lun);
1879 return buffer;
1880 }
1881
1882 /*
1883 * Abort a previous SCSI request. Only commands on the pending list can be
1884 * aborted. All the commands issued to the F/W must complete.
1885 */
1886 static int
1887 megaraid_abort(Scsi_Cmnd *cmd)
1888 {
1889 adapter_t *adapter;
1890 int rval;
1891
1892 adapter = (adapter_t *)cmd->device->host->hostdata;
1893
1894 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1895
1896 /*
1897 * This is required here to complete any completed requests
1898 * to be communicated over to the mid layer.
1899 */
1900 mega_rundoneq(adapter);
1901
1902 return rval;
1903 }
1904
1905
1906 static int
1907 megaraid_reset(struct scsi_cmnd *cmd)
1908 {
1909 adapter_t *adapter;
1910 megacmd_t mc;
1911 int rval;
1912
1913 adapter = (adapter_t *)cmd->device->host->hostdata;
1914
1915 #if MEGA_HAVE_CLUSTERING
1916 mc.cmd = MEGA_CLUSTER_CMD;
1917 mc.opcode = MEGA_RESET_RESERVATIONS;
1918
1919 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1920 printk(KERN_WARNING
1921 "megaraid: reservation reset failed.\n");
1922 }
1923 else {
1924 printk(KERN_INFO "megaraid: reservation reset.\n");
1925 }
1926 #endif
1927
1928 spin_lock_irq(&adapter->lock);
1929
1930 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
1931
1932 /*
1933 * This is required here to complete any completed requests
1934 * to be communicated over to the mid layer.
1935 */
1936 mega_rundoneq(adapter);
1937 spin_unlock_irq(&adapter->lock);
1938
1939 return rval;
1940 }
1941
1942 /**
1943 * megaraid_abort_and_reset()
1944 * @adapter - megaraid soft state
1945 * @cmd - scsi command to be aborted or reset
1946 * @aor - abort or reset flag
1947 *
1948 * Try to locate the scsi command in the pending queue. If found and is not
1949 * issued to the controller, abort/reset it. Otherwise return failure
1950 */
1951 static int
1952 megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
1953 {
1954 struct list_head *pos, *next;
1955 scb_t *scb;
1956
1957 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
1958 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
1959 cmd->cmnd[0], cmd->device->channel,
1960 cmd->device->id, cmd->device->lun);
1961
1962 if(list_empty(&adapter->pending_list))
1963 return FALSE;
1964
1965 list_for_each_safe(pos, next, &adapter->pending_list) {
1966
1967 scb = list_entry(pos, scb_t, list);
1968
1969 if (scb->cmd == cmd) { /* Found command */
1970
1971 scb->state |= aor;
1972
1973 /*
1974 * Check if this command has firmware ownership. If
1975 * yes, we cannot reset this command. Whenever f/w
1976 * completes this command, we will return appropriate
1977 * status from ISR.
1978 */
1979 if( scb->state & SCB_ISSUED ) {
1980
1981 printk(KERN_WARNING
1982 "megaraid: %s-%lx[%x], fw owner.\n",
1983 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1984 cmd->serial_number, scb->idx);
1985
1986 return FALSE;
1987 }
1988 else {
1989
1990 /*
1991 * Not yet issued! Remove from the pending
1992 * list
1993 */
1994 printk(KERN_WARNING
1995 "megaraid: %s-%lx[%x], driver owner.\n",
1996 (aor==SCB_ABORT) ? "ABORTING":"RESET",
1997 cmd->serial_number, scb->idx);
1998
1999 mega_free_scb(adapter, scb);
2000
2001 if( aor == SCB_ABORT ) {
2002 cmd->result = (DID_ABORT << 16);
2003 }
2004 else {
2005 cmd->result = (DID_RESET << 16);
2006 }
2007
2008 list_add_tail(SCSI_LIST(cmd),
2009 &adapter->completed_list);
2010
2011 return TRUE;
2012 }
2013 }
2014 }
2015
2016 return FALSE;
2017 }
2018
2019 static inline int
2020 make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2021 {
2022 *pdev = alloc_pci_dev();
2023
2024 if( *pdev == NULL ) return -1;
2025
2026 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2027
2028 if( pci_set_dma_mask(*pdev, DMA_BIT_MASK(32)) != 0 ) {
2029 kfree(*pdev);
2030 return -1;
2031 }
2032
2033 return 0;
2034 }
2035
2036 static inline void
2037 free_local_pdev(struct pci_dev *pdev)
2038 {
2039 kfree(pdev);
2040 }
2041
2042 /**
2043 * mega_allocate_inquiry()
2044 * @dma_handle - handle returned for dma address
2045 * @pdev - handle to pci device
2046 *
2047 * allocates memory for inquiry structure
2048 */
2049 static inline void *
2050 mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2051 {
2052 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2053 }
2054
2055
2056 static inline void
2057 mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2058 {
2059 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2060 }
2061
2062
2063 #ifdef CONFIG_PROC_FS
2064 /* Following code handles /proc fs */
2065
2066 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2067 S_IRUSR | S_IFREG, \
2068 controller_proc_dir_entry, \
2069 func, adapter)
2070
2071 /**
2072 * mega_create_proc_entry()
2073 * @index - index in soft state array
2074 * @parent - parent node for this /proc entry
2075 *
2076 * Creates /proc entries for our controllers.
2077 */
2078 static void
2079 mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2080 {
2081 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2082 u8 string[64] = { 0 };
2083 adapter_t *adapter = hba_soft_state[index];
2084
2085 sprintf(string, "hba%d", adapter->host->host_no);
2086
2087 controller_proc_dir_entry =
2088 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2089
2090 if(!controller_proc_dir_entry) {
2091 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2092 return;
2093 }
2094 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2095 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2096 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2097 #if MEGA_HAVE_ENH_PROC
2098 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2099 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2100 proc_battery);
2101
2102 /*
2103 * Display each physical drive on its channel
2104 */
2105 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2106 proc_pdrv_ch0);
2107 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2108 proc_pdrv_ch1);
2109 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2110 proc_pdrv_ch2);
2111 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2112 proc_pdrv_ch3);
2113
2114 /*
2115 * Display a set of up to 10 logical drive through each of following
2116 * /proc entries
2117 */
2118 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2119 proc_rdrv_10);
2120 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2121 proc_rdrv_20);
2122 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2123 proc_rdrv_30);
2124 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2125 proc_rdrv_40);
2126 #endif
2127 }
2128
2129
2130 /**
2131 * proc_read_config()
2132 * @page - buffer to write the data in
2133 * @start - where the actual data has been written in page
2134 * @offset - same meaning as the read system call
2135 * @count - same meaning as the read system call
2136 * @eof - set if no more data needs to be returned
2137 * @data - pointer to our soft state
2138 *
2139 * Display configuration information about the controller.
2140 */
2141 static int
2142 proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2143 void *data)
2144 {
2145
2146 adapter_t *adapter = (adapter_t *)data;
2147 int len = 0;
2148
2149 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2150
2151 if(adapter->product_info.product_name[0])
2152 len += sprintf(page+len, "%s\n",
2153 adapter->product_info.product_name);
2154
2155 len += sprintf(page+len, "Controller Type: ");
2156
2157 if( adapter->flag & BOARD_MEMMAP ) {
2158 len += sprintf(page+len,
2159 "438/466/467/471/493/518/520/531/532\n");
2160 }
2161 else {
2162 len += sprintf(page+len,
2163 "418/428/434\n");
2164 }
2165
2166 if(adapter->flag & BOARD_40LD) {
2167 len += sprintf(page+len,
2168 "Controller Supports 40 Logical Drives\n");
2169 }
2170
2171 if(adapter->flag & BOARD_64BIT) {
2172 len += sprintf(page+len,
2173 "Controller capable of 64-bit memory addressing\n");
2174 }
2175 if( adapter->has_64bit_addr ) {
2176 len += sprintf(page+len,
2177 "Controller using 64-bit memory addressing\n");
2178 }
2179 else {
2180 len += sprintf(page+len,
2181 "Controller is not using 64-bit memory addressing\n");
2182 }
2183
2184 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2185 adapter->host->irq);
2186
2187 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2188 adapter->numldrv, adapter->product_info.nchannels);
2189
2190 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2191 adapter->fw_version, adapter->bios_version,
2192 adapter->product_info.dram_size);
2193
2194 len += sprintf(page+len,
2195 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2196 adapter->product_info.max_commands, adapter->max_cmds);
2197
2198 len += sprintf(page+len, "support_ext_cdb = %d\n",
2199 adapter->support_ext_cdb);
2200 len += sprintf(page+len, "support_random_del = %d\n",
2201 adapter->support_random_del);
2202 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2203 adapter->boot_ldrv_enabled);
2204 len += sprintf(page+len, "boot_ldrv = %d\n",
2205 adapter->boot_ldrv);
2206 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2207 adapter->boot_pdrv_enabled);
2208 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2209 adapter->boot_pdrv_ch);
2210 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2211 adapter->boot_pdrv_tgt);
2212 len += sprintf(page+len, "quiescent = %d\n",
2213 atomic_read(&adapter->quiescent));
2214 len += sprintf(page+len, "has_cluster = %d\n",
2215 adapter->has_cluster);
2216
2217 len += sprintf(page+len, "\nModule Parameters:\n");
2218 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2219 max_cmd_per_lun);
2220 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2221 max_sectors_per_io);
2222
2223 *eof = 1;
2224
2225 return len;
2226 }
2227
2228
2229
2230 /**
2231 * proc_read_stat()
2232 * @page - buffer to write the data in
2233 * @start - where the actual data has been written in page
2234 * @offset - same meaning as the read system call
2235 * @count - same meaning as the read system call
2236 * @eof - set if no more data needs to be returned
2237 * @data - pointer to our soft state
2238 *
2239 * Diaplay statistical information about the I/O activity.
2240 */
2241 static int
2242 proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2243 void *data)
2244 {
2245 adapter_t *adapter;
2246 int len;
2247 int i;
2248
2249 i = 0; /* avoid compilation warnings */
2250 len = 0;
2251 adapter = (adapter_t *)data;
2252
2253 len = sprintf(page, "Statistical Information for this controller\n");
2254 len += sprintf(page+len, "pend_cmds = %d\n",
2255 atomic_read(&adapter->pend_cmds));
2256 #if MEGA_HAVE_STATS
2257 for(i = 0; i < adapter->numldrv; i++) {
2258 len += sprintf(page+len, "Logical Drive %d:\n", i);
2259
2260 len += sprintf(page+len,
2261 "\tReads Issued = %lu, Writes Issued = %lu\n",
2262 adapter->nreads[i], adapter->nwrites[i]);
2263
2264 len += sprintf(page+len,
2265 "\tSectors Read = %lu, Sectors Written = %lu\n",
2266 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2267
2268 len += sprintf(page+len,
2269 "\tRead errors = %lu, Write errors = %lu\n\n",
2270 adapter->rd_errors[i], adapter->wr_errors[i]);
2271 }
2272 #else
2273 len += sprintf(page+len,
2274 "IO and error counters not compiled in driver.\n");
2275 #endif
2276
2277 *eof = 1;
2278
2279 return len;
2280 }
2281
2282
2283 /**
2284 * proc_read_mbox()
2285 * @page - buffer to write the data in
2286 * @start - where the actual data has been written in page
2287 * @offset - same meaning as the read system call
2288 * @count - same meaning as the read system call
2289 * @eof - set if no more data needs to be returned
2290 * @data - pointer to our soft state
2291 *
2292 * Display mailbox information for the last command issued. This information
2293 * is good for debugging.
2294 */
2295 static int
2296 proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2297 void *data)
2298 {
2299
2300 adapter_t *adapter = (adapter_t *)data;
2301 volatile mbox_t *mbox = adapter->mbox;
2302 int len = 0;
2303
2304 len = sprintf(page, "Contents of Mail Box Structure\n");
2305 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2306 mbox->m_out.cmd);
2307 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2308 mbox->m_out.cmdid);
2309 len += sprintf(page+len, " No of Sectors= %04d\n",
2310 mbox->m_out.numsectors);
2311 len += sprintf(page+len, " LBA = 0x%02x\n",
2312 mbox->m_out.lba);
2313 len += sprintf(page+len, " DTA = 0x%08x\n",
2314 mbox->m_out.xferaddr);
2315 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2316 mbox->m_out.logdrv);
2317 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2318 mbox->m_out.numsgelements);
2319 len += sprintf(page+len, " Busy = %01x\n",
2320 mbox->m_in.busy);
2321 len += sprintf(page+len, " Status = 0x%02x\n",
2322 mbox->m_in.status);
2323
2324 *eof = 1;
2325
2326 return len;
2327 }
2328
2329
2330 /**
2331 * proc_rebuild_rate()
2332 * @page - buffer to write the data in
2333 * @start - where the actual data has been written in page
2334 * @offset - same meaning as the read system call
2335 * @count - same meaning as the read system call
2336 * @eof - set if no more data needs to be returned
2337 * @data - pointer to our soft state
2338 *
2339 * Display current rebuild rate
2340 */
2341 static int
2342 proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2343 void *data)
2344 {
2345 adapter_t *adapter = (adapter_t *)data;
2346 dma_addr_t dma_handle;
2347 caddr_t inquiry;
2348 struct pci_dev *pdev;
2349 int len = 0;
2350
2351 if( make_local_pdev(adapter, &pdev) != 0 ) {
2352 *eof = 1;
2353 return len;
2354 }
2355
2356 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2357 free_local_pdev(pdev);
2358 *eof = 1;
2359 return len;
2360 }
2361
2362 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2363
2364 len = sprintf(page, "Adapter inquiry failed.\n");
2365
2366 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2367
2368 mega_free_inquiry(inquiry, dma_handle, pdev);
2369
2370 free_local_pdev(pdev);
2371
2372 *eof = 1;
2373
2374 return len;
2375 }
2376
2377 if( adapter->flag & BOARD_40LD ) {
2378 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2379 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2380 }
2381 else {
2382 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2383 ((mraid_ext_inquiry *)
2384 inquiry)->raid_inq.adapter_info.rebuild_rate);
2385 }
2386
2387
2388 mega_free_inquiry(inquiry, dma_handle, pdev);
2389
2390 free_local_pdev(pdev);
2391
2392 *eof = 1;
2393
2394 return len;
2395 }
2396
2397
2398 /**
2399 * proc_battery()
2400 * @page - buffer to write the data in
2401 * @start - where the actual data has been written in page
2402 * @offset - same meaning as the read system call
2403 * @count - same meaning as the read system call
2404 * @eof - set if no more data needs to be returned
2405 * @data - pointer to our soft state
2406 *
2407 * Display information about the battery module on the controller.
2408 */
2409 static int
2410 proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2411 void *data)
2412 {
2413 adapter_t *adapter = (adapter_t *)data;
2414 dma_addr_t dma_handle;
2415 caddr_t inquiry;
2416 struct pci_dev *pdev;
2417 u8 battery_status = 0;
2418 char str[256];
2419 int len = 0;
2420
2421 if( make_local_pdev(adapter, &pdev) != 0 ) {
2422 *eof = 1;
2423 return len;
2424 }
2425
2426 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2427 free_local_pdev(pdev);
2428 *eof = 1;
2429 return len;
2430 }
2431
2432 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2433
2434 len = sprintf(page, "Adapter inquiry failed.\n");
2435
2436 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2437
2438 mega_free_inquiry(inquiry, dma_handle, pdev);
2439
2440 free_local_pdev(pdev);
2441
2442 *eof = 1;
2443
2444 return len;
2445 }
2446
2447 if( adapter->flag & BOARD_40LD ) {
2448 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2449 }
2450 else {
2451 battery_status = ((mraid_ext_inquiry *)inquiry)->
2452 raid_inq.adapter_info.battery_status;
2453 }
2454
2455 /*
2456 * Decode the battery status
2457 */
2458 sprintf(str, "Battery Status:[%d]", battery_status);
2459
2460 if(battery_status == MEGA_BATT_CHARGE_DONE)
2461 strcat(str, " Charge Done");
2462
2463 if(battery_status & MEGA_BATT_MODULE_MISSING)
2464 strcat(str, " Module Missing");
2465
2466 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2467 strcat(str, " Low Voltage");
2468
2469 if(battery_status & MEGA_BATT_TEMP_HIGH)
2470 strcat(str, " Temperature High");
2471
2472 if(battery_status & MEGA_BATT_PACK_MISSING)
2473 strcat(str, " Pack Missing");
2474
2475 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2476 strcat(str, " Charge In-progress");
2477
2478 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2479 strcat(str, " Charge Fail");
2480
2481 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2482 strcat(str, " Cycles Exceeded");
2483
2484 len = sprintf(page, "%s\n", str);
2485
2486
2487 mega_free_inquiry(inquiry, dma_handle, pdev);
2488
2489 free_local_pdev(pdev);
2490
2491 *eof = 1;
2492
2493 return len;
2494 }
2495
2496
2497 /**
2498 * proc_pdrv_ch0()
2499 * @page - buffer to write the data in
2500 * @start - where the actual data has been written in page
2501 * @offset - same meaning as the read system call
2502 * @count - same meaning as the read system call
2503 * @eof - set if no more data needs to be returned
2504 * @data - pointer to our soft state
2505 *
2506 * Display information about the physical drives on physical channel 0.
2507 */
2508 static int
2509 proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
2510 void *data)
2511 {
2512 adapter_t *adapter = (adapter_t *)data;
2513
2514 *eof = 1;
2515
2516 return (proc_pdrv(adapter, page, 0));
2517 }
2518
2519
2520 /**
2521 * proc_pdrv_ch1()
2522 * @page - buffer to write the data in
2523 * @start - where the actual data has been written in page
2524 * @offset - same meaning as the read system call
2525 * @count - same meaning as the read system call
2526 * @eof - set if no more data needs to be returned
2527 * @data - pointer to our soft state
2528 *
2529 * Display information about the physical drives on physical channel 1.
2530 */
2531 static int
2532 proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2533 void *data)
2534 {
2535 adapter_t *adapter = (adapter_t *)data;
2536
2537 *eof = 1;
2538
2539 return (proc_pdrv(adapter, page, 1));
2540 }
2541
2542
2543 /**
2544 * proc_pdrv_ch2()
2545 * @page - buffer to write the data in
2546 * @start - where the actual data has been written in page
2547 * @offset - same meaning as the read system call
2548 * @count - same meaning as the read system call
2549 * @eof - set if no more data needs to be returned
2550 * @data - pointer to our soft state
2551 *
2552 * Display information about the physical drives on physical channel 2.
2553 */
2554 static int
2555 proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2556 void *data)
2557 {
2558 adapter_t *adapter = (adapter_t *)data;
2559
2560 *eof = 1;
2561
2562 return (proc_pdrv(adapter, page, 2));
2563 }
2564
2565
2566 /**
2567 * proc_pdrv_ch3()
2568 * @page - buffer to write the data in
2569 * @start - where the actual data has been written in page
2570 * @offset - same meaning as the read system call
2571 * @count - same meaning as the read system call
2572 * @eof - set if no more data needs to be returned
2573 * @data - pointer to our soft state
2574 *
2575 * Display information about the physical drives on physical channel 3.
2576 */
2577 static int
2578 proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2579 void *data)
2580 {
2581 adapter_t *adapter = (adapter_t *)data;
2582
2583 *eof = 1;
2584
2585 return (proc_pdrv(adapter, page, 3));
2586 }
2587
2588
2589 /**
2590 * proc_pdrv()
2591 * @page - buffer to write the data in
2592 * @adapter - pointer to our soft state
2593 *
2594 * Display information about the physical drives.
2595 */
2596 static int
2597 proc_pdrv(adapter_t *adapter, char *page, int channel)
2598 {
2599 dma_addr_t dma_handle;
2600 char *scsi_inq;
2601 dma_addr_t scsi_inq_dma_handle;
2602 caddr_t inquiry;
2603 struct pci_dev *pdev;
2604 u8 *pdrv_state;
2605 u8 state;
2606 int tgt;
2607 int max_channels;
2608 int len = 0;
2609 char str[80];
2610 int i;
2611
2612 if( make_local_pdev(adapter, &pdev) != 0 ) {
2613 return len;
2614 }
2615
2616 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2617 goto free_pdev;
2618 }
2619
2620 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2621 len = sprintf(page, "Adapter inquiry failed.\n");
2622
2623 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2624
2625 goto free_inquiry;
2626 }
2627
2628
2629 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2630
2631 if( scsi_inq == NULL ) {
2632 len = sprintf(page, "memory not available for scsi inq.\n");
2633
2634 goto free_inquiry;
2635 }
2636
2637 if( adapter->flag & BOARD_40LD ) {
2638 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2639 }
2640 else {
2641 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2642 raid_inq.pdrv_info.pdrv_state;
2643 }
2644
2645 max_channels = adapter->product_info.nchannels;
2646
2647 if( channel >= max_channels ) {
2648 goto free_pci;
2649 }
2650
2651 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2652
2653 i = channel*16 + tgt;
2654
2655 state = *(pdrv_state + i);
2656
2657 switch( state & 0x0F ) {
2658
2659 case PDRV_ONLINE:
2660 sprintf(str,
2661 "Channel:%2d Id:%2d State: Online",
2662 channel, tgt);
2663 break;
2664
2665 case PDRV_FAILED:
2666 sprintf(str,
2667 "Channel:%2d Id:%2d State: Failed",
2668 channel, tgt);
2669 break;
2670
2671 case PDRV_RBLD:
2672 sprintf(str,
2673 "Channel:%2d Id:%2d State: Rebuild",
2674 channel, tgt);
2675 break;
2676
2677 case PDRV_HOTSPARE:
2678 sprintf(str,
2679 "Channel:%2d Id:%2d State: Hot spare",
2680 channel, tgt);
2681 break;
2682
2683 default:
2684 sprintf(str,
2685 "Channel:%2d Id:%2d State: Un-configured",
2686 channel, tgt);
2687 break;
2688
2689 }
2690
2691 /*
2692 * This interface displays inquiries for disk drives
2693 * only. Inquries for logical drives and non-disk
2694 * devices are available through /proc/scsi/scsi
2695 */
2696 memset(scsi_inq, 0, 256);
2697 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2698 scsi_inq_dma_handle) ||
2699 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2700 continue;
2701 }
2702
2703 /*
2704 * Check for overflow. We print less than 240
2705 * characters for inquiry
2706 */
2707 if( (len + 240) >= PAGE_SIZE ) break;
2708
2709 len += sprintf(page+len, "%s.\n", str);
2710
2711 len += mega_print_inquiry(page+len, scsi_inq);
2712 }
2713
2714 free_pci:
2715 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2716 free_inquiry:
2717 mega_free_inquiry(inquiry, dma_handle, pdev);
2718 free_pdev:
2719 free_local_pdev(pdev);
2720
2721 return len;
2722 }
2723
2724
2725 /*
2726 * Display scsi inquiry
2727 */
2728 static int
2729 mega_print_inquiry(char *page, char *scsi_inq)
2730 {
2731 int len = 0;
2732 int i;
2733
2734 len = sprintf(page, " Vendor: ");
2735 for( i = 8; i < 16; i++ ) {
2736 len += sprintf(page+len, "%c", scsi_inq[i]);
2737 }
2738
2739 len += sprintf(page+len, " Model: ");
2740
2741 for( i = 16; i < 32; i++ ) {
2742 len += sprintf(page+len, "%c", scsi_inq[i]);
2743 }
2744
2745 len += sprintf(page+len, " Rev: ");
2746
2747 for( i = 32; i < 36; i++ ) {
2748 len += sprintf(page+len, "%c", scsi_inq[i]);
2749 }
2750
2751 len += sprintf(page+len, "\n");
2752
2753 i = scsi_inq[0] & 0x1f;
2754
2755 len += sprintf(page+len, " Type: %s ", scsi_device_type(i));
2756
2757 len += sprintf(page+len,
2758 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2759
2760 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2761 len += sprintf(page+len, " CCS\n");
2762 else
2763 len += sprintf(page+len, "\n");
2764
2765 return len;
2766 }
2767
2768
2769 /**
2770 * proc_rdrv_10()
2771 * @page - buffer to write the data in
2772 * @start - where the actual data has been written in page
2773 * @offset - same meaning as the read system call
2774 * @count - same meaning as the read system call
2775 * @eof - set if no more data needs to be returned
2776 * @data - pointer to our soft state
2777 *
2778 * Display real time information about the logical drives 0 through 9.
2779 */
2780 static int
2781 proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2782 void *data)
2783 {
2784 adapter_t *adapter = (adapter_t *)data;
2785
2786 *eof = 1;
2787
2788 return (proc_rdrv(adapter, page, 0, 9));
2789 }
2790
2791
2792 /**
2793 * proc_rdrv_20()
2794 * @page - buffer to write the data in
2795 * @start - where the actual data has been written in page
2796 * @offset - same meaning as the read system call
2797 * @count - same meaning as the read system call
2798 * @eof - set if no more data needs to be returned
2799 * @data - pointer to our soft state
2800 *
2801 * Display real time information about the logical drives 0 through 9.
2802 */
2803 static int
2804 proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2805 void *data)
2806 {
2807 adapter_t *adapter = (adapter_t *)data;
2808
2809 *eof = 1;
2810
2811 return (proc_rdrv(adapter, page, 10, 19));
2812 }
2813
2814
2815 /**
2816 * proc_rdrv_30()
2817 * @page - buffer to write the data in
2818 * @start - where the actual data has been written in page
2819 * @offset - same meaning as the read system call
2820 * @count - same meaning as the read system call
2821 * @eof - set if no more data needs to be returned
2822 * @data - pointer to our soft state
2823 *
2824 * Display real time information about the logical drives 0 through 9.
2825 */
2826 static int
2827 proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2828 void *data)
2829 {
2830 adapter_t *adapter = (adapter_t *)data;
2831
2832 *eof = 1;
2833
2834 return (proc_rdrv(adapter, page, 20, 29));
2835 }
2836
2837
2838 /**
2839 * proc_rdrv_40()
2840 * @page - buffer to write the data in
2841 * @start - where the actual data has been written in page
2842 * @offset - same meaning as the read system call
2843 * @count - same meaning as the read system call
2844 * @eof - set if no more data needs to be returned
2845 * @data - pointer to our soft state
2846 *
2847 * Display real time information about the logical drives 0 through 9.
2848 */
2849 static int
2850 proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2851 void *data)
2852 {
2853 adapter_t *adapter = (adapter_t *)data;
2854
2855 *eof = 1;
2856
2857 return (proc_rdrv(adapter, page, 30, 39));
2858 }
2859
2860
2861 /**
2862 * proc_rdrv()
2863 * @page - buffer to write the data in
2864 * @adapter - pointer to our soft state
2865 * @start - starting logical drive to display
2866 * @end - ending logical drive to display
2867 *
2868 * We do not print the inquiry information since its already available through
2869 * /proc/scsi/scsi interface
2870 */
2871 static int
2872 proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2873 {
2874 dma_addr_t dma_handle;
2875 logdrv_param *lparam;
2876 megacmd_t mc;
2877 char *disk_array;
2878 dma_addr_t disk_array_dma_handle;
2879 caddr_t inquiry;
2880 struct pci_dev *pdev;
2881 u8 *rdrv_state;
2882 int num_ldrv;
2883 u32 array_sz;
2884 int len = 0;
2885 int i;
2886
2887 if( make_local_pdev(adapter, &pdev) != 0 ) {
2888 return len;
2889 }
2890
2891 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2892 free_local_pdev(pdev);
2893 return len;
2894 }
2895
2896 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2897
2898 len = sprintf(page, "Adapter inquiry failed.\n");
2899
2900 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2901
2902 mega_free_inquiry(inquiry, dma_handle, pdev);
2903
2904 free_local_pdev(pdev);
2905
2906 return len;
2907 }
2908
2909 memset(&mc, 0, sizeof(megacmd_t));
2910
2911 if( adapter->flag & BOARD_40LD ) {
2912 array_sz = sizeof(disk_array_40ld);
2913
2914 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2915
2916 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2917 }
2918 else {
2919 array_sz = sizeof(disk_array_8ld);
2920
2921 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2922 raid_inq.logdrv_info.ldrv_state;
2923
2924 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2925 raid_inq.logdrv_info.num_ldrv;
2926 }
2927
2928 disk_array = pci_alloc_consistent(pdev, array_sz,
2929 &disk_array_dma_handle);
2930
2931 if( disk_array == NULL ) {
2932 len = sprintf(page, "memory not available.\n");
2933
2934 mega_free_inquiry(inquiry, dma_handle, pdev);
2935
2936 free_local_pdev(pdev);
2937
2938 return len;
2939 }
2940
2941 mc.xferaddr = (u32)disk_array_dma_handle;
2942
2943 if( adapter->flag & BOARD_40LD ) {
2944 mc.cmd = FC_NEW_CONFIG;
2945 mc.opcode = OP_DCMD_READ_CONFIG;
2946
2947 if( mega_internal_command(adapter, &mc, NULL) ) {
2948
2949 len = sprintf(page, "40LD read config failed.\n");
2950
2951 mega_free_inquiry(inquiry, dma_handle, pdev);
2952
2953 pci_free_consistent(pdev, array_sz, disk_array,
2954 disk_array_dma_handle);
2955
2956 free_local_pdev(pdev);
2957
2958 return len;
2959 }
2960
2961 }
2962 else {
2963 mc.cmd = NEW_READ_CONFIG_8LD;
2964
2965 if( mega_internal_command(adapter, &mc, NULL) ) {
2966
2967 mc.cmd = READ_CONFIG_8LD;
2968
2969 if( mega_internal_command(adapter, &mc,
2970 NULL) ){
2971
2972 len = sprintf(page,
2973 "8LD read config failed.\n");
2974
2975 mega_free_inquiry(inquiry, dma_handle, pdev);
2976
2977 pci_free_consistent(pdev, array_sz,
2978 disk_array,
2979 disk_array_dma_handle);
2980
2981 free_local_pdev(pdev);
2982
2983 return len;
2984 }
2985 }
2986 }
2987
2988 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
2989
2990 if( adapter->flag & BOARD_40LD ) {
2991 lparam =
2992 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
2993 }
2994 else {
2995 lparam =
2996 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
2997 }
2998
2999 /*
3000 * Check for overflow. We print less than 240 characters for
3001 * information about each logical drive.
3002 */
3003 if( (len + 240) >= PAGE_SIZE ) break;
3004
3005 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3006
3007 switch( rdrv_state[i] & 0x0F ) {
3008 case RDRV_OFFLINE:
3009 len += sprintf(page+len, "state: offline");
3010 break;
3011
3012 case RDRV_DEGRADED:
3013 len += sprintf(page+len, "state: degraded");
3014 break;
3015
3016 case RDRV_OPTIMAL:
3017 len += sprintf(page+len, "state: optimal");
3018 break;
3019
3020 case RDRV_DELETED:
3021 len += sprintf(page+len, "state: deleted");
3022 break;
3023
3024 default:
3025 len += sprintf(page+len, "state: unknown");
3026 break;
3027 }
3028
3029 /*
3030 * Check if check consistency or initialization is going on
3031 * for this logical drive.
3032 */
3033 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3034 len += sprintf(page+len,
3035 ", check-consistency in progress");
3036 }
3037 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3038 len += sprintf(page+len,
3039 ", initialization in progress");
3040 }
3041
3042 len += sprintf(page+len, "\n");
3043
3044 len += sprintf(page+len, "Span depth:%3d, ",
3045 lparam->span_depth);
3046
3047 len += sprintf(page+len, "RAID level:%3d, ",
3048 lparam->level);
3049
3050 len += sprintf(page+len, "Stripe size:%3d, ",
3051 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3052
3053 len += sprintf(page+len, "Row size:%3d\n",
3054 lparam->row_size);
3055
3056
3057 len += sprintf(page+len, "Read Policy: ");
3058
3059 switch(lparam->read_ahead) {
3060
3061 case NO_READ_AHEAD:
3062 len += sprintf(page+len, "No read ahead, ");
3063 break;
3064
3065 case READ_AHEAD:
3066 len += sprintf(page+len, "Read ahead, ");
3067 break;
3068
3069 case ADAP_READ_AHEAD:
3070 len += sprintf(page+len, "Adaptive, ");
3071 break;
3072
3073 }
3074
3075 len += sprintf(page+len, "Write Policy: ");
3076
3077 switch(lparam->write_mode) {
3078
3079 case WRMODE_WRITE_THRU:
3080 len += sprintf(page+len, "Write thru, ");
3081 break;
3082
3083 case WRMODE_WRITE_BACK:
3084 len += sprintf(page+len, "Write back, ");
3085 break;
3086 }
3087
3088 len += sprintf(page+len, "Cache Policy: ");
3089
3090 switch(lparam->direct_io) {
3091
3092 case CACHED_IO:
3093 len += sprintf(page+len, "Cached IO\n\n");
3094 break;
3095
3096 case DIRECT_IO:
3097 len += sprintf(page+len, "Direct IO\n\n");
3098 break;
3099 }
3100 }
3101
3102 mega_free_inquiry(inquiry, dma_handle, pdev);
3103
3104 pci_free_consistent(pdev, array_sz, disk_array,
3105 disk_array_dma_handle);
3106
3107 free_local_pdev(pdev);
3108
3109 return len;
3110 }
3111 #else
3112 static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)
3113 {
3114 }
3115 #endif
3116
3117
3118 /**
3119 * megaraid_biosparam()
3120 *
3121 * Return the disk geometry for a particular disk
3122 */
3123 static int
3124 megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3125 sector_t capacity, int geom[])
3126 {
3127 adapter_t *adapter;
3128 unsigned char *bh;
3129 int heads;
3130 int sectors;
3131 int cylinders;
3132 int rval;
3133
3134 /* Get pointer to host config structure */
3135 adapter = (adapter_t *)sdev->host->hostdata;
3136
3137 if (IS_RAID_CH(adapter, sdev->channel)) {
3138 /* Default heads (64) & sectors (32) */
3139 heads = 64;
3140 sectors = 32;
3141 cylinders = (ulong)capacity / (heads * sectors);
3142
3143 /*
3144 * Handle extended translation size for logical drives
3145 * > 1Gb
3146 */
3147 if ((ulong)capacity >= 0x200000) {
3148 heads = 255;
3149 sectors = 63;
3150 cylinders = (ulong)capacity / (heads * sectors);
3151 }
3152
3153 /* return result */
3154 geom[0] = heads;
3155 geom[1] = sectors;
3156 geom[2] = cylinders;
3157 }
3158 else {
3159 bh = scsi_bios_ptable(bdev);
3160
3161 if( bh ) {
3162 rval = scsi_partsize(bh, capacity,
3163 &geom[2], &geom[0], &geom[1]);
3164 kfree(bh);
3165 if( rval != -1 )
3166 return rval;
3167 }
3168
3169 printk(KERN_INFO
3170 "megaraid: invalid partition on this disk on channel %d\n",
3171 sdev->channel);
3172
3173 /* Default heads (64) & sectors (32) */
3174 heads = 64;
3175 sectors = 32;
3176 cylinders = (ulong)capacity / (heads * sectors);
3177
3178 /* Handle extended translation size for logical drives > 1Gb */
3179 if ((ulong)capacity >= 0x200000) {
3180 heads = 255;
3181 sectors = 63;
3182 cylinders = (ulong)capacity / (heads * sectors);
3183 }
3184
3185 /* return result */
3186 geom[0] = heads;
3187 geom[1] = sectors;
3188 geom[2] = cylinders;
3189 }
3190
3191 return 0;
3192 }
3193
3194 /**
3195 * mega_init_scb()
3196 * @adapter - pointer to our soft state
3197 *
3198 * Allocate memory for the various pointers in the scb structures:
3199 * scatter-gather list pointer, passthru and extended passthru structure
3200 * pointers.
3201 */
3202 static int
3203 mega_init_scb(adapter_t *adapter)
3204 {
3205 scb_t *scb;
3206 int i;
3207
3208 for( i = 0; i < adapter->max_cmds; i++ ) {
3209
3210 scb = &adapter->scb_list[i];
3211
3212 scb->sgl64 = NULL;
3213 scb->sgl = NULL;
3214 scb->pthru = NULL;
3215 scb->epthru = NULL;
3216 }
3217
3218 for( i = 0; i < adapter->max_cmds; i++ ) {
3219
3220 scb = &adapter->scb_list[i];
3221
3222 scb->idx = i;
3223
3224 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3225 sizeof(mega_sgl64) * adapter->sglen,
3226 &scb->sgl_dma_addr);
3227
3228 scb->sgl = (mega_sglist *)scb->sgl64;
3229
3230 if( !scb->sgl ) {
3231 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3232 mega_free_sgl(adapter);
3233 return -1;
3234 }
3235
3236 scb->pthru = pci_alloc_consistent(adapter->dev,
3237 sizeof(mega_passthru),
3238 &scb->pthru_dma_addr);
3239
3240 if( !scb->pthru ) {
3241 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3242 mega_free_sgl(adapter);
3243 return -1;
3244 }
3245
3246 scb->epthru = pci_alloc_consistent(adapter->dev,
3247 sizeof(mega_ext_passthru),
3248 &scb->epthru_dma_addr);
3249
3250 if( !scb->epthru ) {
3251 printk(KERN_WARNING
3252 "Can't allocate extended passthru.\n");
3253 mega_free_sgl(adapter);
3254 return -1;
3255 }
3256
3257
3258 scb->dma_type = MEGA_DMA_TYPE_NONE;
3259
3260 /*
3261 * Link to free list
3262 * lock not required since we are loading the driver, so no
3263 * commands possible right now.
3264 */
3265 scb->state = SCB_FREE;
3266 scb->cmd = NULL;
3267 list_add(&scb->list, &adapter->free_list);
3268 }
3269
3270 return 0;
3271 }
3272
3273
3274 /**
3275 * megadev_open()
3276 * @inode - unused
3277 * @filep - unused
3278 *
3279 * Routines for the character/ioctl interface to the driver. Find out if this
3280 * is a valid open.
3281 */
3282 static int
3283 megadev_open (struct inode *inode, struct file *filep)
3284 {
3285 cycle_kernel_lock();
3286 /*
3287 * Only allow superuser to access private ioctl interface
3288 */
3289 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3290
3291 return 0;
3292 }
3293
3294
3295 /**
3296 * megadev_ioctl()
3297 * @inode - Our device inode
3298 * @filep - unused
3299 * @cmd - ioctl command
3300 * @arg - user buffer
3301 *
3302 * ioctl entry point for our private ioctl interface. We move the data in from
3303 * the user space, prepare the command (if necessary, convert the old MIMD
3304 * ioctl to new ioctl command), and issue a synchronous command to the
3305 * controller.
3306 */
3307 static int
3308 megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3309 {
3310 adapter_t *adapter;
3311 nitioctl_t uioc;
3312 int adapno;
3313 int rval;
3314 mega_passthru __user *upthru; /* user address for passthru */
3315 mega_passthru *pthru; /* copy user passthru here */
3316 dma_addr_t pthru_dma_hndl;
3317 void *data = NULL; /* data to be transferred */
3318 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3319 megacmd_t mc;
3320 megastat_t __user *ustats;
3321 int num_ldrv;
3322 u32 uxferaddr = 0;
3323 struct pci_dev *pdev;
3324
3325 ustats = NULL; /* avoid compilation warnings */
3326 num_ldrv = 0;
3327
3328 /*
3329 * Make sure only USCSICMD are issued through this interface.
3330 * MIMD application would still fire different command.
3331 */
3332 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3333 return -EINVAL;
3334 }
3335
3336 /*
3337 * Check and convert a possible MIMD command to NIT command.
3338 * mega_m_to_n() copies the data from the user space, so we do not
3339 * have to do it here.
3340 * NOTE: We will need some user address to copyout the data, therefore
3341 * the inteface layer will also provide us with the required user
3342 * addresses.
3343 */
3344 memset(&uioc, 0, sizeof(nitioctl_t));
3345 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3346 return rval;
3347
3348
3349 switch( uioc.opcode ) {
3350
3351 case GET_DRIVER_VER:
3352 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3353 return (-EFAULT);
3354
3355 break;
3356
3357 case GET_N_ADAP:
3358 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3359 return (-EFAULT);
3360
3361 /*
3362 * Shucks. MIMD interface returns a positive value for number
3363 * of adapters. TODO: Change it to return 0 when there is no
3364 * applicatio using mimd interface.
3365 */
3366 return hba_count;
3367
3368 case GET_ADAP_INFO:
3369
3370 /*
3371 * Which adapter
3372 */
3373 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3374 return (-ENODEV);
3375
3376 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3377 sizeof(struct mcontroller)) )
3378 return (-EFAULT);
3379 break;
3380
3381 #if MEGA_HAVE_STATS
3382
3383 case GET_STATS:
3384 /*
3385 * Which adapter
3386 */
3387 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3388 return (-ENODEV);
3389
3390 adapter = hba_soft_state[adapno];
3391
3392 ustats = uioc.uioc_uaddr;
3393
3394 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3395 return (-EFAULT);
3396
3397 /*
3398 * Check for the validity of the logical drive number
3399 */
3400 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3401
3402 if( copy_to_user(ustats->nreads, adapter->nreads,
3403 num_ldrv*sizeof(u32)) )
3404 return -EFAULT;
3405
3406 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3407 num_ldrv*sizeof(u32)) )
3408 return -EFAULT;
3409
3410 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3411 num_ldrv*sizeof(u32)) )
3412 return -EFAULT;
3413
3414 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3415 num_ldrv*sizeof(u32)) )
3416 return -EFAULT;
3417
3418 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3419 num_ldrv*sizeof(u32)) )
3420 return -EFAULT;
3421
3422 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3423 num_ldrv*sizeof(u32)) )
3424 return -EFAULT;
3425
3426 return 0;
3427
3428 #endif
3429 case MBOX_CMD:
3430
3431 /*
3432 * Which adapter
3433 */
3434 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3435 return (-ENODEV);
3436
3437 adapter = hba_soft_state[adapno];
3438
3439 /*
3440 * Deletion of logical drive is a special case. The adapter
3441 * should be quiescent before this command is issued.
3442 */
3443 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3444 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3445
3446 /*
3447 * Do we support this feature
3448 */
3449 if( !adapter->support_random_del ) {
3450 printk(KERN_WARNING "megaraid: logdrv ");
3451 printk("delete on non-supporting F/W.\n");
3452
3453 return (-EINVAL);
3454 }
3455
3456 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3457
3458 if( rval == 0 ) {
3459 memset(&mc, 0, sizeof(megacmd_t));
3460
3461 mc.status = rval;
3462
3463 rval = mega_n_to_m((void __user *)arg, &mc);
3464 }
3465
3466 return rval;
3467 }
3468 /*
3469 * This interface only support the regular passthru commands.
3470 * Reject extended passthru and 64-bit passthru
3471 */
3472 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3473 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3474
3475 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3476
3477 return (-EINVAL);
3478 }
3479
3480 /*
3481 * For all internal commands, the buffer must be allocated in
3482 * <4GB address range
3483 */
3484 if( make_local_pdev(adapter, &pdev) != 0 )
3485 return -EIO;
3486
3487 /* Is it a passthru command or a DCMD */
3488 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3489 /* Passthru commands */
3490
3491 pthru = pci_alloc_consistent(pdev,
3492 sizeof(mega_passthru),
3493 &pthru_dma_hndl);
3494
3495 if( pthru == NULL ) {
3496 free_local_pdev(pdev);
3497 return (-ENOMEM);
3498 }
3499
3500 /*
3501 * The user passthru structure
3502 */
3503 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
3504
3505 /*
3506 * Copy in the user passthru here.
3507 */
3508 if( copy_from_user(pthru, upthru,
3509 sizeof(mega_passthru)) ) {
3510
3511 pci_free_consistent(pdev,
3512 sizeof(mega_passthru), pthru,
3513 pthru_dma_hndl);
3514
3515 free_local_pdev(pdev);
3516
3517 return (-EFAULT);
3518 }
3519
3520 /*
3521 * Is there a data transfer
3522 */
3523 if( pthru->dataxferlen ) {
3524 data = pci_alloc_consistent(pdev,
3525 pthru->dataxferlen,
3526 &data_dma_hndl);
3527
3528 if( data == NULL ) {
3529 pci_free_consistent(pdev,
3530 sizeof(mega_passthru),
3531 pthru,
3532 pthru_dma_hndl);
3533
3534 free_local_pdev(pdev);
3535
3536 return (-ENOMEM);
3537 }
3538
3539 /*
3540 * Save the user address and point the kernel
3541 * address at just allocated memory
3542 */
3543 uxferaddr = pthru->dataxferaddr;
3544 pthru->dataxferaddr = data_dma_hndl;
3545 }
3546
3547
3548 /*
3549 * Is data coming down-stream
3550 */
3551 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3552 /*
3553 * Get the user data
3554 */
3555 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3556 pthru->dataxferlen) ) {
3557 rval = (-EFAULT);
3558 goto freemem_and_return;
3559 }
3560 }
3561
3562 memset(&mc, 0, sizeof(megacmd_t));
3563
3564 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3565 mc.xferaddr = (u32)pthru_dma_hndl;
3566
3567 /*
3568 * Issue the command
3569 */
3570 mega_internal_command(adapter, &mc, pthru);
3571
3572 rval = mega_n_to_m((void __user *)arg, &mc);
3573
3574 if( rval ) goto freemem_and_return;
3575
3576
3577 /*
3578 * Is data going up-stream
3579 */
3580 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3581 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3582 pthru->dataxferlen) ) {
3583 rval = (-EFAULT);
3584 }
3585 }
3586
3587 /*
3588 * Send the request sense data also, irrespective of
3589 * whether the user has asked for it or not.
3590 */
3591 if (copy_to_user(upthru->reqsensearea,
3592 pthru->reqsensearea, 14))
3593 rval = -EFAULT;
3594
3595 freemem_and_return:
3596 if( pthru->dataxferlen ) {
3597 pci_free_consistent(pdev,
3598 pthru->dataxferlen, data,
3599 data_dma_hndl);
3600 }
3601
3602 pci_free_consistent(pdev, sizeof(mega_passthru),
3603 pthru, pthru_dma_hndl);
3604
3605 free_local_pdev(pdev);
3606
3607 return rval;
3608 }
3609 else {
3610 /* DCMD commands */
3611
3612 /*
3613 * Is there a data transfer
3614 */
3615 if( uioc.xferlen ) {
3616 data = pci_alloc_consistent(pdev,
3617 uioc.xferlen, &data_dma_hndl);
3618
3619 if( data == NULL ) {
3620 free_local_pdev(pdev);
3621 return (-ENOMEM);
3622 }
3623
3624 uxferaddr = MBOX(uioc)->xferaddr;
3625 }
3626
3627 /*
3628 * Is data coming down-stream
3629 */
3630 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3631 /*
3632 * Get the user data
3633 */
3634 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
3635 uioc.xferlen) ) {
3636
3637 pci_free_consistent(pdev,
3638 uioc.xferlen,
3639 data, data_dma_hndl);
3640
3641 free_local_pdev(pdev);
3642
3643 return (-EFAULT);
3644 }
3645 }
3646
3647 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3648
3649 mc.xferaddr = (u32)data_dma_hndl;
3650
3651 /*
3652 * Issue the command
3653 */
3654 mega_internal_command(adapter, &mc, NULL);
3655
3656 rval = mega_n_to_m((void __user *)arg, &mc);
3657
3658 if( rval ) {
3659 if( uioc.xferlen ) {
3660 pci_free_consistent(pdev,
3661 uioc.xferlen, data,
3662 data_dma_hndl);
3663 }
3664
3665 free_local_pdev(pdev);
3666
3667 return rval;
3668 }
3669
3670 /*
3671 * Is data going up-stream
3672 */
3673 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3674 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
3675 uioc.xferlen) ) {
3676
3677 rval = (-EFAULT);
3678 }
3679 }
3680
3681 if( uioc.xferlen ) {
3682 pci_free_consistent(pdev,
3683 uioc.xferlen, data,
3684 data_dma_hndl);
3685 }
3686
3687 free_local_pdev(pdev);
3688
3689 return rval;
3690 }
3691
3692 default:
3693 return (-EINVAL);
3694 }
3695
3696 return 0;
3697 }
3698
3699 static long
3700 megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
3701 {
3702 int ret;
3703
3704 lock_kernel();
3705 ret = megadev_ioctl(filep, cmd, arg);
3706 unlock_kernel();
3707
3708 return ret;
3709 }
3710
3711 /**
3712 * mega_m_to_n()
3713 * @arg - user address
3714 * @uioc - new ioctl structure
3715 *
3716 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3717 * structure
3718 *
3719 * Converts the older mimd ioctl structure to newer NIT structure
3720 */
3721 static int
3722 mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3723 {
3724 struct uioctl_t uioc_mimd;
3725 char signature[8] = {0};
3726 u8 opcode;
3727 u8 subopcode;
3728
3729
3730 /*
3731 * check is the application conforms to NIT. We do not have to do much
3732 * in that case.
3733 * We exploit the fact that the signature is stored in the very
3734 * begining of the structure.
3735 */
3736
3737 if( copy_from_user(signature, arg, 7) )
3738 return (-EFAULT);
3739
3740 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3741
3742 /*
3743 * NOTE NOTE: The nit ioctl is still under flux because of
3744 * change of mailbox definition, in HPE. No applications yet
3745 * use this interface and let's not have applications use this
3746 * interface till the new specifitions are in place.
3747 */
3748 return -EINVAL;
3749 #if 0
3750 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3751 return (-EFAULT);
3752 return 0;
3753 #endif
3754 }
3755
3756 /*
3757 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3758 *
3759 * Get the user ioctl structure
3760 */
3761 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3762 return (-EFAULT);
3763
3764
3765 /*
3766 * Get the opcode and subopcode for the commands
3767 */
3768 opcode = uioc_mimd.ui.fcs.opcode;
3769 subopcode = uioc_mimd.ui.fcs.subopcode;
3770
3771 switch (opcode) {
3772 case 0x82:
3773
3774 switch (subopcode) {
3775
3776 case MEGAIOC_QDRVRVER: /* Query driver version */
3777 uioc->opcode = GET_DRIVER_VER;
3778 uioc->uioc_uaddr = uioc_mimd.data;
3779 break;
3780
3781 case MEGAIOC_QNADAP: /* Get # of adapters */
3782 uioc->opcode = GET_N_ADAP;
3783 uioc->uioc_uaddr = uioc_mimd.data;
3784 break;
3785
3786 case MEGAIOC_QADAPINFO: /* Get adapter information */
3787 uioc->opcode = GET_ADAP_INFO;
3788 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3789 uioc->uioc_uaddr = uioc_mimd.data;
3790 break;
3791
3792 default:
3793 return(-EINVAL);
3794 }
3795
3796 break;
3797
3798
3799 case 0x81:
3800
3801 uioc->opcode = MBOX_CMD;
3802 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3803
3804 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3805
3806 uioc->xferlen = uioc_mimd.ui.fcs.length;
3807
3808 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3809 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3810
3811 break;
3812
3813 case 0x80:
3814
3815 uioc->opcode = MBOX_CMD;
3816 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3817
3818 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3819
3820 /*
3821 * Choose the xferlen bigger of input and output data
3822 */
3823 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3824 uioc_mimd.outlen : uioc_mimd.inlen;
3825
3826 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3827 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3828
3829 break;
3830
3831 default:
3832 return (-EINVAL);
3833
3834 }
3835
3836 return 0;
3837 }
3838
3839 /*
3840 * mega_n_to_m()
3841 * @arg - user address
3842 * @mc - mailbox command
3843 *
3844 * Updates the status information to the application, depending on application
3845 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3846 */
3847 static int
3848 mega_n_to_m(void __user *arg, megacmd_t *mc)
3849 {
3850 nitioctl_t __user *uiocp;
3851 megacmd_t __user *umc;
3852 mega_passthru __user *upthru;
3853 struct uioctl_t __user *uioc_mimd;
3854 char signature[8] = {0};
3855
3856 /*
3857 * check is the application conforms to NIT.
3858 */
3859 if( copy_from_user(signature, arg, 7) )
3860 return -EFAULT;
3861
3862 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3863
3864 uiocp = arg;
3865
3866 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3867 return (-EFAULT);
3868
3869 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3870
3871 umc = MBOX_P(uiocp);
3872
3873 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3874 return -EFAULT;
3875
3876 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3877 return (-EFAULT);
3878 }
3879 }
3880 else {
3881 uioc_mimd = arg;
3882
3883 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3884 return (-EFAULT);
3885
3886 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3887
3888 umc = (megacmd_t __user *)uioc_mimd->mbox;
3889
3890 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3891 return (-EFAULT);
3892
3893 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3894 return (-EFAULT);
3895 }
3896 }
3897
3898 return 0;
3899 }
3900
3901
3902 /*
3903 * MEGARAID 'FW' commands.
3904 */
3905
3906 /**
3907 * mega_is_bios_enabled()
3908 * @adapter - pointer to our soft state
3909 *
3910 * issue command to find out if the BIOS is enabled for this controller
3911 */
3912 static int
3913 mega_is_bios_enabled(adapter_t *adapter)
3914 {
3915 unsigned char raw_mbox[sizeof(struct mbox_out)];
3916 mbox_t *mbox;
3917 int ret;
3918
3919 mbox = (mbox_t *)raw_mbox;
3920
3921 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3922
3923 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3924
3925 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3926
3927 raw_mbox[0] = IS_BIOS_ENABLED;
3928 raw_mbox[2] = GET_BIOS;
3929
3930
3931 ret = issue_scb_block(adapter, raw_mbox);
3932
3933 return *(char *)adapter->mega_buffer;
3934 }
3935
3936
3937 /**
3938 * mega_enum_raid_scsi()
3939 * @adapter - pointer to our soft state
3940 *
3941 * Find out what channels are RAID/SCSI. This information is used to
3942 * differentiate the virtual channels and physical channels and to support
3943 * ROMB feature and non-disk devices.
3944 */
3945 static void
3946 mega_enum_raid_scsi(adapter_t *adapter)
3947 {
3948 unsigned char raw_mbox[sizeof(struct mbox_out)];
3949 mbox_t *mbox;
3950 int i;
3951
3952 mbox = (mbox_t *)raw_mbox;
3953
3954 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3955
3956 /*
3957 * issue command to find out what channels are raid/scsi
3958 */
3959 raw_mbox[0] = CHNL_CLASS;
3960 raw_mbox[2] = GET_CHNL_CLASS;
3961
3962 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3963
3964 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3965
3966 /*
3967 * Non-ROMB firmware fail this command, so all channels
3968 * must be shown RAID
3969 */
3970 adapter->mega_ch_class = 0xFF;
3971
3972 if(!issue_scb_block(adapter, raw_mbox)) {
3973 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
3974
3975 }
3976
3977 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
3978 if( (adapter->mega_ch_class >> i) & 0x01 ) {
3979 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
3980 i);
3981 }
3982 else {
3983 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
3984 i);
3985 }
3986 }
3987
3988 return;
3989 }
3990
3991
3992 /**
3993 * mega_get_boot_drv()
3994 * @adapter - pointer to our soft state
3995 *
3996 * Find out which device is the boot device. Note, any logical drive or any
3997 * phyical device (e.g., a CDROM) can be designated as a boot device.
3998 */
3999 static void
4000 mega_get_boot_drv(adapter_t *adapter)
4001 {
4002 struct private_bios_data *prv_bios_data;
4003 unsigned char raw_mbox[sizeof(struct mbox_out)];
4004 mbox_t *mbox;
4005 u16 cksum = 0;
4006 u8 *cksum_p;
4007 u8 boot_pdrv;
4008 int i;
4009
4010 mbox = (mbox_t *)raw_mbox;
4011
4012 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4013
4014 raw_mbox[0] = BIOS_PVT_DATA;
4015 raw_mbox[2] = GET_BIOS_PVT_DATA;
4016
4017 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4018
4019 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4020
4021 adapter->boot_ldrv_enabled = 0;
4022 adapter->boot_ldrv = 0;
4023
4024 adapter->boot_pdrv_enabled = 0;
4025 adapter->boot_pdrv_ch = 0;
4026 adapter->boot_pdrv_tgt = 0;
4027
4028 if(issue_scb_block(adapter, raw_mbox) == 0) {
4029 prv_bios_data =
4030 (struct private_bios_data *)adapter->mega_buffer;
4031
4032 cksum = 0;
4033 cksum_p = (char *)prv_bios_data;
4034 for (i = 0; i < 14; i++ ) {
4035 cksum += (u16)(*cksum_p++);
4036 }
4037
4038 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4039
4040 /*
4041 * If MSB is set, a physical drive is set as boot
4042 * device
4043 */
4044 if( prv_bios_data->boot_drv & 0x80 ) {
4045 adapter->boot_pdrv_enabled = 1;
4046 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4047 adapter->boot_pdrv_ch = boot_pdrv / 16;
4048 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4049 }
4050 else {
4051 adapter->boot_ldrv_enabled = 1;
4052 adapter->boot_ldrv = prv_bios_data->boot_drv;
4053 }
4054 }
4055 }
4056
4057 }
4058
4059 /**
4060 * mega_support_random_del()
4061 * @adapter - pointer to our soft state
4062 *
4063 * Find out if this controller supports random deletion and addition of
4064 * logical drives
4065 */
4066 static int
4067 mega_support_random_del(adapter_t *adapter)
4068 {
4069 unsigned char raw_mbox[sizeof(struct mbox_out)];
4070 mbox_t *mbox;
4071 int rval;
4072
4073 mbox = (mbox_t *)raw_mbox;
4074
4075 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4076
4077 /*
4078 * issue command
4079 */
4080 raw_mbox[0] = FC_DEL_LOGDRV;
4081 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4082
4083 rval = issue_scb_block(adapter, raw_mbox);
4084
4085 return !rval;
4086 }
4087
4088
4089 /**
4090 * mega_support_ext_cdb()
4091 * @adapter - pointer to our soft state
4092 *
4093 * Find out if this firmware support cdblen > 10
4094 */
4095 static int
4096 mega_support_ext_cdb(adapter_t *adapter)
4097 {
4098 unsigned char raw_mbox[sizeof(struct mbox_out)];
4099 mbox_t *mbox;
4100 int rval;
4101
4102 mbox = (mbox_t *)raw_mbox;
4103
4104 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4105 /*
4106 * issue command to find out if controller supports extended CDBs.
4107 */
4108 raw_mbox[0] = 0xA4;
4109 raw_mbox[2] = 0x16;
4110
4111 rval = issue_scb_block(adapter, raw_mbox);
4112
4113 return !rval;
4114 }
4115
4116
4117 /**
4118 * mega_del_logdrv()
4119 * @adapter - pointer to our soft state
4120 * @logdrv - logical drive to be deleted
4121 *
4122 * Delete the specified logical drive. It is the responsibility of the user
4123 * app to let the OS know about this operation.
4124 */
4125 static int
4126 mega_del_logdrv(adapter_t *adapter, int logdrv)
4127 {
4128 unsigned long flags;
4129 scb_t *scb;
4130 int rval;
4131
4132 /*
4133 * Stop sending commands to the controller, queue them internally.
4134 * When deletion is complete, ISR will flush the queue.
4135 */
4136 atomic_set(&adapter->quiescent, 1);
4137
4138 /*
4139 * Wait till all the issued commands are complete and there are no
4140 * commands in the pending queue
4141 */
4142 while (atomic_read(&adapter->pend_cmds) > 0 ||
4143 !list_empty(&adapter->pending_list))
4144 msleep(1000); /* sleep for 1s */
4145
4146 rval = mega_do_del_logdrv(adapter, logdrv);
4147
4148 spin_lock_irqsave(&adapter->lock, flags);
4149
4150 /*
4151 * If delete operation was successful, add 0x80 to the logical drive
4152 * ids for commands in the pending queue.
4153 */
4154 if (adapter->read_ldidmap) {
4155 struct list_head *pos;
4156 list_for_each(pos, &adapter->pending_list) {
4157 scb = list_entry(pos, scb_t, list);
4158 if (scb->pthru->logdrv < 0x80 )
4159 scb->pthru->logdrv += 0x80;
4160 }
4161 }
4162
4163 atomic_set(&adapter->quiescent, 0);
4164
4165 mega_runpendq(adapter);
4166
4167 spin_unlock_irqrestore(&adapter->lock, flags);
4168
4169 return rval;
4170 }
4171
4172
4173 static int
4174 mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4175 {
4176 megacmd_t mc;
4177 int rval;
4178
4179 memset( &mc, 0, sizeof(megacmd_t));
4180
4181 mc.cmd = FC_DEL_LOGDRV;
4182 mc.opcode = OP_DEL_LOGDRV;
4183 mc.subopcode = logdrv;
4184
4185 rval = mega_internal_command(adapter, &mc, NULL);
4186
4187 /* log this event */
4188 if(rval) {
4189 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4190 return rval;
4191 }
4192
4193 /*
4194 * After deleting first logical drive, the logical drives must be
4195 * addressed by adding 0x80 to the logical drive id.
4196 */
4197 adapter->read_ldidmap = 1;
4198
4199 return rval;
4200 }
4201
4202
4203 /**
4204 * mega_get_max_sgl()
4205 * @adapter - pointer to our soft state
4206 *
4207 * Find out the maximum number of scatter-gather elements supported by this
4208 * version of the firmware
4209 */
4210 static void
4211 mega_get_max_sgl(adapter_t *adapter)
4212 {
4213 unsigned char raw_mbox[sizeof(struct mbox_out)];
4214 mbox_t *mbox;
4215
4216 mbox = (mbox_t *)raw_mbox;
4217
4218 memset(mbox, 0, sizeof(raw_mbox));
4219
4220 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4221
4222 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4223
4224 raw_mbox[0] = MAIN_MISC_OPCODE;
4225 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4226
4227
4228 if( issue_scb_block(adapter, raw_mbox) ) {
4229 /*
4230 * f/w does not support this command. Choose the default value
4231 */
4232 adapter->sglen = MIN_SGLIST;
4233 }
4234 else {
4235 adapter->sglen = *((char *)adapter->mega_buffer);
4236
4237 /*
4238 * Make sure this is not more than the resources we are
4239 * planning to allocate
4240 */
4241 if ( adapter->sglen > MAX_SGLIST )
4242 adapter->sglen = MAX_SGLIST;
4243 }
4244
4245 return;
4246 }
4247
4248
4249 /**
4250 * mega_support_cluster()
4251 * @adapter - pointer to our soft state
4252 *
4253 * Find out if this firmware support cluster calls.
4254 */
4255 static int
4256 mega_support_cluster(adapter_t *adapter)
4257 {
4258 unsigned char raw_mbox[sizeof(struct mbox_out)];
4259 mbox_t *mbox;
4260
4261 mbox = (mbox_t *)raw_mbox;
4262
4263 memset(mbox, 0, sizeof(raw_mbox));
4264
4265 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4266
4267 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4268
4269 /*
4270 * Try to get the initiator id. This command will succeed iff the
4271 * clustering is available on this HBA.
4272 */
4273 raw_mbox[0] = MEGA_GET_TARGET_ID;
4274
4275 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4276
4277 /*
4278 * Cluster support available. Get the initiator target id.
4279 * Tell our id to mid-layer too.
4280 */
4281 adapter->this_id = *(u32 *)adapter->mega_buffer;
4282 adapter->host->this_id = adapter->this_id;
4283
4284 return 1;
4285 }
4286
4287 return 0;
4288 }
4289
4290 #ifdef CONFIG_PROC_FS
4291 /**
4292 * mega_adapinq()
4293 * @adapter - pointer to our soft state
4294 * @dma_handle - DMA address of the buffer
4295 *
4296 * Issue internal comamnds while interrupts are available.
4297 * We only issue direct mailbox commands from within the driver. ioctl()
4298 * interface using these routines can issue passthru commands.
4299 */
4300 static int
4301 mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4302 {
4303 megacmd_t mc;
4304
4305 memset(&mc, 0, sizeof(megacmd_t));
4306
4307 if( adapter->flag & BOARD_40LD ) {
4308 mc.cmd = FC_NEW_CONFIG;
4309 mc.opcode = NC_SUBOP_ENQUIRY3;
4310 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4311 }
4312 else {
4313 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4314 }
4315
4316 mc.xferaddr = (u32)dma_handle;
4317
4318 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
4319 return -1;
4320 }
4321
4322 return 0;
4323 }
4324
4325
4326 /** mega_internal_dev_inquiry()
4327 * @adapter - pointer to our soft state
4328 * @ch - channel for this device
4329 * @tgt - ID of this device
4330 * @buf_dma_handle - DMA address of the buffer
4331 *
4332 * Issue the scsi inquiry for the specified device.
4333 */
4334 static int
4335 mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4336 dma_addr_t buf_dma_handle)
4337 {
4338 mega_passthru *pthru;
4339 dma_addr_t pthru_dma_handle;
4340 megacmd_t mc;
4341 int rval;
4342 struct pci_dev *pdev;
4343
4344
4345 /*
4346 * For all internal commands, the buffer must be allocated in <4GB
4347 * address range
4348 */
4349 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4350
4351 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4352 &pthru_dma_handle);
4353
4354 if( pthru == NULL ) {
4355 free_local_pdev(pdev);
4356 return -1;
4357 }
4358
4359 pthru->timeout = 2;
4360 pthru->ars = 1;
4361 pthru->reqsenselen = 14;
4362 pthru->islogical = 0;
4363
4364 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4365
4366 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4367
4368 pthru->cdblen = 6;
4369
4370 pthru->cdb[0] = INQUIRY;
4371 pthru->cdb[1] = 0;
4372 pthru->cdb[2] = 0;
4373 pthru->cdb[3] = 0;
4374 pthru->cdb[4] = 255;
4375 pthru->cdb[5] = 0;
4376
4377
4378 pthru->dataxferaddr = (u32)buf_dma_handle;
4379 pthru->dataxferlen = 256;
4380
4381 memset(&mc, 0, sizeof(megacmd_t));
4382
4383 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4384 mc.xferaddr = (u32)pthru_dma_handle;
4385
4386 rval = mega_internal_command(adapter, &mc, pthru);
4387
4388 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4389 pthru_dma_handle);
4390
4391 free_local_pdev(pdev);
4392
4393 return rval;
4394 }
4395 #endif
4396
4397 /**
4398 * mega_internal_command()
4399 * @adapter - pointer to our soft state
4400 * @mc - the mailbox command
4401 * @pthru - Passthru structure for DCDB commands
4402 *
4403 * Issue the internal commands in interrupt mode.
4404 * The last argument is the address of the passthru structure if the command
4405 * to be fired is a passthru command
4406 *
4407 * lockscope specifies whether the caller has already acquired the lock. Of
4408 * course, the caller must know which lock we are talking about.
4409 *
4410 * Note: parameter 'pthru' is null for non-passthru commands.
4411 */
4412 static int
4413 mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
4414 {
4415 Scsi_Cmnd *scmd;
4416 struct scsi_device *sdev;
4417 scb_t *scb;
4418 int rval;
4419
4420 scmd = scsi_allocate_command(GFP_KERNEL);
4421 if (!scmd)
4422 return -ENOMEM;
4423
4424 /*
4425 * The internal commands share one command id and hence are
4426 * serialized. This is so because we want to reserve maximum number of
4427 * available command ids for the I/O commands.
4428 */
4429 mutex_lock(&adapter->int_mtx);
4430
4431 scb = &adapter->int_scb;
4432 memset(scb, 0, sizeof(scb_t));
4433
4434 sdev = kzalloc(sizeof(struct scsi_device), GFP_KERNEL);
4435 scmd->device = sdev;
4436
4437 memset(adapter->int_cdb, 0, sizeof(adapter->int_cdb));
4438 scmd->cmnd = adapter->int_cdb;
4439 scmd->device->host = adapter->host;
4440 scmd->host_scribble = (void *)scb;
4441 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4442
4443 scb->state |= SCB_ACTIVE;
4444 scb->cmd = scmd;
4445
4446 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4447
4448 /*
4449 * Is it a passthru command
4450 */
4451 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4452
4453 scb->pthru = pthru;
4454 }
4455
4456 scb->idx = CMDID_INT_CMDS;
4457
4458 megaraid_queue(scmd, mega_internal_done);
4459
4460 wait_for_completion(&adapter->int_waitq);
4461
4462 rval = scmd->result;
4463 mc->status = scmd->result;
4464 kfree(sdev);
4465
4466 /*
4467 * Print a debug message for all failed commands. Applications can use
4468 * this information.
4469 */
4470 if( scmd->result && trace_level ) {
4471 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4472 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4473 }
4474
4475 mutex_unlock(&adapter->int_mtx);
4476
4477 scsi_free_command(GFP_KERNEL, scmd);
4478
4479 return rval;
4480 }
4481
4482
4483 /**
4484 * mega_internal_done()
4485 * @scmd - internal scsi command
4486 *
4487 * Callback routine for internal commands.
4488 */
4489 static void
4490 mega_internal_done(Scsi_Cmnd *scmd)
4491 {
4492 adapter_t *adapter;
4493
4494 adapter = (adapter_t *)scmd->device->host->hostdata;
4495
4496 complete(&adapter->int_waitq);
4497
4498 }
4499
4500
4501 static struct scsi_host_template megaraid_template = {
4502 .module = THIS_MODULE,
4503 .name = "MegaRAID",
4504 .proc_name = "megaraid_legacy",
4505 .info = megaraid_info,
4506 .queuecommand = megaraid_queue,
4507 .bios_param = megaraid_biosparam,
4508 .max_sectors = MAX_SECTORS_PER_IO,
4509 .can_queue = MAX_COMMANDS,
4510 .this_id = DEFAULT_INITIATOR_ID,
4511 .sg_tablesize = MAX_SGLIST,
4512 .cmd_per_lun = DEF_CMD_PER_LUN,
4513 .use_clustering = ENABLE_CLUSTERING,
4514 .eh_abort_handler = megaraid_abort,
4515 .eh_device_reset_handler = megaraid_reset,
4516 .eh_bus_reset_handler = megaraid_reset,
4517 .eh_host_reset_handler = megaraid_reset,
4518 };
4519
4520 static int __devinit
4521 megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4522 {
4523 struct Scsi_Host *host;
4524 adapter_t *adapter;
4525 unsigned long mega_baseport, tbase, flag = 0;
4526 u16 subsysid, subsysvid;
4527 u8 pci_bus, pci_dev_func;
4528 int irq, i, j;
4529 int error = -ENODEV;
4530
4531 if (pci_enable_device(pdev))
4532 goto out;
4533 pci_set_master(pdev);
4534
4535 pci_bus = pdev->bus->number;
4536 pci_dev_func = pdev->devfn;
4537
4538 /*
4539 * The megaraid3 stuff reports the ID of the Intel part which is not
4540 * remotely specific to the megaraid
4541 */
4542 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4543 u16 magic;
4544 /*
4545 * Don't fall over the Compaq management cards using the same
4546 * PCI identifier
4547 */
4548 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4549 pdev->subsystem_device == 0xC000)
4550 return -ENODEV;
4551 /* Now check the magic signature byte */
4552 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4553 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4554 return -ENODEV;
4555 /* Ok it is probably a megaraid */
4556 }
4557
4558 /*
4559 * For these vendor and device ids, signature offsets are not
4560 * valid and 64 bit is implicit
4561 */
4562 if (id->driver_data & BOARD_64BIT)
4563 flag |= BOARD_64BIT;
4564 else {
4565 u32 magic64;
4566
4567 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4568 if (magic64 == HBA_SIGNATURE_64BIT)
4569 flag |= BOARD_64BIT;
4570 }
4571
4572 subsysvid = pdev->subsystem_vendor;
4573 subsysid = pdev->subsystem_device;
4574
4575 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4576 id->vendor, id->device, pci_bus);
4577
4578 printk("slot %d:func %d\n",
4579 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4580
4581 /* Read the base port and IRQ from PCI */
4582 mega_baseport = pci_resource_start(pdev, 0);
4583 irq = pdev->irq;
4584
4585 tbase = mega_baseport;
4586 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4587 flag |= BOARD_MEMMAP;
4588
4589 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4590 printk(KERN_WARNING "megaraid: mem region busy!\n");
4591 goto out_disable_device;
4592 }
4593
4594 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4595 if (!mega_baseport) {
4596 printk(KERN_WARNING
4597 "megaraid: could not map hba memory\n");
4598 goto out_release_region;
4599 }
4600 } else {
4601 flag |= BOARD_IOMAP;
4602 mega_baseport += 0x10;
4603
4604 if (!request_region(mega_baseport, 16, "megaraid"))
4605 goto out_disable_device;
4606 }
4607
4608 /* Initialize SCSI Host structure */
4609 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4610 if (!host)
4611 goto out_iounmap;
4612
4613 adapter = (adapter_t *)host->hostdata;
4614 memset(adapter, 0, sizeof(adapter_t));
4615
4616 printk(KERN_NOTICE
4617 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4618 host->host_no, mega_baseport, irq);
4619
4620 adapter->base = mega_baseport;
4621 if (flag & BOARD_MEMMAP)
4622 adapter->mmio_base = (void __iomem *) mega_baseport;
4623
4624 INIT_LIST_HEAD(&adapter->free_list);
4625 INIT_LIST_HEAD(&adapter->pending_list);
4626 INIT_LIST_HEAD(&adapter->completed_list);
4627
4628 adapter->flag = flag;
4629 spin_lock_init(&adapter->lock);
4630
4631 host->cmd_per_lun = max_cmd_per_lun;
4632 host->max_sectors = max_sectors_per_io;
4633
4634 adapter->dev = pdev;
4635 adapter->host = host;
4636
4637 adapter->host->irq = irq;
4638
4639 if (flag & BOARD_MEMMAP)
4640 adapter->host->base = tbase;
4641 else {
4642 adapter->host->io_port = tbase;
4643 adapter->host->n_io_port = 16;
4644 }
4645
4646 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4647
4648 /*
4649 * Allocate buffer to issue internal commands.
4650 */
4651 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4652 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4653 if (!adapter->mega_buffer) {
4654 printk(KERN_WARNING "megaraid: out of RAM.\n");
4655 goto out_host_put;
4656 }
4657
4658 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4659 if (!adapter->scb_list) {
4660 printk(KERN_WARNING "megaraid: out of RAM.\n");
4661 goto out_free_cmd_buffer;
4662 }
4663
4664 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4665 megaraid_isr_memmapped : megaraid_isr_iomapped,
4666 IRQF_SHARED, "megaraid", adapter)) {
4667 printk(KERN_WARNING
4668 "megaraid: Couldn't register IRQ %d!\n", irq);
4669 goto out_free_scb_list;
4670 }
4671
4672 if (mega_setup_mailbox(adapter))
4673 goto out_free_irq;
4674
4675 if (mega_query_adapter(adapter))
4676 goto out_free_mbox;
4677
4678 /*
4679 * Have checks for some buggy f/w
4680 */
4681 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4682 /*
4683 * Which firmware
4684 */
4685 if (!strcmp(adapter->fw_version, "3.00") ||
4686 !strcmp(adapter->fw_version, "3.01")) {
4687
4688 printk( KERN_WARNING
4689 "megaraid: Your card is a Dell PERC "
4690 "2/SC RAID controller with "
4691 "firmware\nmegaraid: 3.00 or 3.01. "
4692 "This driver is known to have "
4693 "corruption issues\nmegaraid: with "
4694 "those firmware versions on this "
4695 "specific card. In order\nmegaraid: "
4696 "to protect your data, please upgrade "
4697 "your firmware to version\nmegaraid: "
4698 "3.10 or later, available from the "
4699 "Dell Technical Support web\n"
4700 "megaraid: site at\nhttp://support."
4701 "dell.com/us/en/filelib/download/"
4702 "index.asp?fileid=2940\n"
4703 );
4704 }
4705 }
4706
4707 /*
4708 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4709 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4710 * support, since this firmware cannot handle 64 bit
4711 * addressing
4712 */
4713 if ((subsysvid == HP_SUBSYS_VID) &&
4714 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4715 /*
4716 * which firmware
4717 */
4718 if (!strcmp(adapter->fw_version, "H01.07") ||
4719 !strcmp(adapter->fw_version, "H01.08") ||
4720 !strcmp(adapter->fw_version, "H01.09") ) {
4721 printk(KERN_WARNING
4722 "megaraid: Firmware H.01.07, "
4723 "H.01.08, and H.01.09 on 1M/2M "
4724 "controllers\n"
4725 "megaraid: do not support 64 bit "
4726 "addressing.\nmegaraid: DISABLING "
4727 "64 bit support.\n");
4728 adapter->flag &= ~BOARD_64BIT;
4729 }
4730 }
4731
4732 if (mega_is_bios_enabled(adapter))
4733 mega_hbas[hba_count].is_bios_enabled = 1;
4734 mega_hbas[hba_count].hostdata_addr = adapter;
4735
4736 /*
4737 * Find out which channel is raid and which is scsi. This is
4738 * for ROMB support.
4739 */
4740 mega_enum_raid_scsi(adapter);
4741
4742 /*
4743 * Find out if a logical drive is set as the boot drive. If
4744 * there is one, will make that as the first logical drive.
4745 * ROMB: Do we have to boot from a physical drive. Then all
4746 * the physical drives would appear before the logical disks.
4747 * Else, all the physical drives would be exported to the mid
4748 * layer after logical drives.
4749 */
4750 mega_get_boot_drv(adapter);
4751
4752 if (adapter->boot_pdrv_enabled) {
4753 j = adapter->product_info.nchannels;
4754 for( i = 0; i < j; i++ )
4755 adapter->logdrv_chan[i] = 0;
4756 for( i = j; i < NVIRT_CHAN + j; i++ )
4757 adapter->logdrv_chan[i] = 1;
4758 } else {
4759 for (i = 0; i < NVIRT_CHAN; i++)
4760 adapter->logdrv_chan[i] = 1;
4761 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4762 adapter->logdrv_chan[i] = 0;
4763 adapter->mega_ch_class <<= NVIRT_CHAN;
4764 }
4765
4766 /*
4767 * Do we support random deletion and addition of logical
4768 * drives
4769 */
4770 adapter->read_ldidmap = 0; /* set it after first logdrv
4771 delete cmd */
4772 adapter->support_random_del = mega_support_random_del(adapter);
4773
4774 /* Initialize SCBs */
4775 if (mega_init_scb(adapter))
4776 goto out_free_mbox;
4777
4778 /*
4779 * Reset the pending commands counter
4780 */
4781 atomic_set(&adapter->pend_cmds, 0);
4782
4783 /*
4784 * Reset the adapter quiescent flag
4785 */
4786 atomic_set(&adapter->quiescent, 0);
4787
4788 hba_soft_state[hba_count] = adapter;
4789
4790 /*
4791 * Fill in the structure which needs to be passed back to the
4792 * application when it does an ioctl() for controller related
4793 * information.
4794 */
4795 i = hba_count;
4796
4797 mcontroller[i].base = mega_baseport;
4798 mcontroller[i].irq = irq;
4799 mcontroller[i].numldrv = adapter->numldrv;
4800 mcontroller[i].pcibus = pci_bus;
4801 mcontroller[i].pcidev = id->device;
4802 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4803 mcontroller[i].pciid = -1;
4804 mcontroller[i].pcivendor = id->vendor;
4805 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4806 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4807
4808
4809 /* Set the Mode of addressing to 64 bit if we can */
4810 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4811 pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4812 adapter->has_64bit_addr = 1;
4813 } else {
4814 pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4815 adapter->has_64bit_addr = 0;
4816 }
4817
4818 mutex_init(&adapter->int_mtx);
4819 init_completion(&adapter->int_waitq);
4820
4821 adapter->this_id = DEFAULT_INITIATOR_ID;
4822 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4823
4824 #if MEGA_HAVE_CLUSTERING
4825 /*
4826 * Is cluster support enabled on this controller
4827 * Note: In a cluster the HBAs ( the initiators ) will have
4828 * different target IDs and we cannot assume it to be 7. Call
4829 * to mega_support_cluster() will get the target ids also if
4830 * the cluster support is available
4831 */
4832 adapter->has_cluster = mega_support_cluster(adapter);
4833 if (adapter->has_cluster) {
4834 printk(KERN_NOTICE
4835 "megaraid: Cluster driver, initiator id:%d\n",
4836 adapter->this_id);
4837 }
4838 #endif
4839
4840 pci_set_drvdata(pdev, host);
4841
4842 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4843
4844 error = scsi_add_host(host, &pdev->dev);
4845 if (error)
4846 goto out_free_mbox;
4847
4848 scsi_scan_host(host);
4849 hba_count++;
4850 return 0;
4851
4852 out_free_mbox:
4853 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4854 adapter->una_mbox64, adapter->una_mbox64_dma);
4855 out_free_irq:
4856 free_irq(adapter->host->irq, adapter);
4857 out_free_scb_list:
4858 kfree(adapter->scb_list);
4859 out_free_cmd_buffer:
4860 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4861 adapter->mega_buffer, adapter->buf_dma_handle);
4862 out_host_put:
4863 scsi_host_put(host);
4864 out_iounmap:
4865 if (flag & BOARD_MEMMAP)
4866 iounmap((void *)mega_baseport);
4867 out_release_region:
4868 if (flag & BOARD_MEMMAP)
4869 release_mem_region(tbase, 128);
4870 else
4871 release_region(mega_baseport, 16);
4872 out_disable_device:
4873 pci_disable_device(pdev);
4874 out:
4875 return error;
4876 }
4877
4878 static void
4879 __megaraid_shutdown(adapter_t *adapter)
4880 {
4881 u_char raw_mbox[sizeof(struct mbox_out)];
4882 mbox_t *mbox = (mbox_t *)raw_mbox;
4883 int i;
4884
4885 /* Flush adapter cache */
4886 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4887 raw_mbox[0] = FLUSH_ADAPTER;
4888
4889 free_irq(adapter->host->irq, adapter);
4890
4891 /* Issue a blocking (interrupts disabled) command to the card */
4892 issue_scb_block(adapter, raw_mbox);
4893
4894 /* Flush disks cache */
4895 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4896 raw_mbox[0] = FLUSH_SYSTEM;
4897
4898 /* Issue a blocking (interrupts disabled) command to the card */
4899 issue_scb_block(adapter, raw_mbox);
4900
4901 if (atomic_read(&adapter->pend_cmds) > 0)
4902 printk(KERN_WARNING "megaraid: pending commands!!\n");
4903
4904 /*
4905 * Have a delibrate delay to make sure all the caches are
4906 * actually flushed.
4907 */
4908 for (i = 0; i <= 10; i++)
4909 mdelay(1000);
4910 }
4911
4912 static void __devexit
4913 megaraid_remove_one(struct pci_dev *pdev)
4914 {
4915 struct Scsi_Host *host = pci_get_drvdata(pdev);
4916 adapter_t *adapter = (adapter_t *)host->hostdata;
4917
4918 scsi_remove_host(host);
4919
4920 __megaraid_shutdown(adapter);
4921
4922 /* Free our resources */
4923 if (adapter->flag & BOARD_MEMMAP) {
4924 iounmap((void *)adapter->base);
4925 release_mem_region(adapter->host->base, 128);
4926 } else
4927 release_region(adapter->base, 16);
4928
4929 mega_free_sgl(adapter);
4930
4931 #ifdef CONFIG_PROC_FS
4932 if (adapter->controller_proc_dir_entry) {
4933 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4934 remove_proc_entry("config",
4935 adapter->controller_proc_dir_entry);
4936 remove_proc_entry("mailbox",
4937 adapter->controller_proc_dir_entry);
4938 #if MEGA_HAVE_ENH_PROC
4939 remove_proc_entry("rebuild-rate",
4940 adapter->controller_proc_dir_entry);
4941 remove_proc_entry("battery-status",
4942 adapter->controller_proc_dir_entry);
4943
4944 remove_proc_entry("diskdrives-ch0",
4945 adapter->controller_proc_dir_entry);
4946 remove_proc_entry("diskdrives-ch1",
4947 adapter->controller_proc_dir_entry);
4948 remove_proc_entry("diskdrives-ch2",
4949 adapter->controller_proc_dir_entry);
4950 remove_proc_entry("diskdrives-ch3",
4951 adapter->controller_proc_dir_entry);
4952
4953 remove_proc_entry("raiddrives-0-9",
4954 adapter->controller_proc_dir_entry);
4955 remove_proc_entry("raiddrives-10-19",
4956 adapter->controller_proc_dir_entry);
4957 remove_proc_entry("raiddrives-20-29",
4958 adapter->controller_proc_dir_entry);
4959 remove_proc_entry("raiddrives-30-39",
4960 adapter->controller_proc_dir_entry);
4961 #endif
4962 {
4963 char buf[12] = { 0 };
4964 sprintf(buf, "hba%d", adapter->host->host_no);
4965 remove_proc_entry(buf, mega_proc_dir_entry);
4966 }
4967 }
4968 #endif
4969
4970 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4971 adapter->mega_buffer, adapter->buf_dma_handle);
4972 kfree(adapter->scb_list);
4973 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4974 adapter->una_mbox64, adapter->una_mbox64_dma);
4975
4976 scsi_host_put(host);
4977 pci_disable_device(pdev);
4978
4979 hba_count--;
4980 }
4981
4982 static void
4983 megaraid_shutdown(struct pci_dev *pdev)
4984 {
4985 struct Scsi_Host *host = pci_get_drvdata(pdev);
4986 adapter_t *adapter = (adapter_t *)host->hostdata;
4987
4988 __megaraid_shutdown(adapter);
4989 }
4990
4991 static struct pci_device_id megaraid_pci_tbl[] = {
4992 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
4993 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4994 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
4995 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4996 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
4997 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
4998 {0,}
4999 };
5000 MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5001
5002 static struct pci_driver megaraid_pci_driver = {
5003 .name = "megaraid_legacy",
5004 .id_table = megaraid_pci_tbl,
5005 .probe = megaraid_probe_one,
5006 .remove = __devexit_p(megaraid_remove_one),
5007 .shutdown = megaraid_shutdown,
5008 };
5009
5010 static int __init megaraid_init(void)
5011 {
5012 int error;
5013
5014 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5015 max_cmd_per_lun = MAX_CMD_PER_LUN;
5016 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5017 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5018
5019 #ifdef CONFIG_PROC_FS
5020 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);
5021 if (!mega_proc_dir_entry) {
5022 printk(KERN_WARNING
5023 "megaraid: failed to create megaraid root\n");
5024 }
5025 #endif
5026 error = pci_register_driver(&megaraid_pci_driver);
5027 if (error) {
5028 #ifdef CONFIG_PROC_FS
5029 remove_proc_entry("megaraid", NULL);
5030 #endif
5031 return error;
5032 }
5033
5034 /*
5035 * Register the driver as a character device, for applications
5036 * to access it for ioctls.
5037 * First argument (major) to register_chrdev implies a dynamic
5038 * major number allocation.
5039 */
5040 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
5041 if (!major) {
5042 printk(KERN_WARNING
5043 "megaraid: failed to register char device\n");
5044 }
5045
5046 return 0;
5047 }
5048
5049 static void __exit megaraid_exit(void)
5050 {
5051 /*
5052 * Unregister the character device interface to the driver.
5053 */
5054 unregister_chrdev(major, "megadev_legacy");
5055
5056 pci_unregister_driver(&megaraid_pci_driver);
5057
5058 #ifdef CONFIG_PROC_FS
5059 remove_proc_entry("megaraid", NULL);
5060 #endif
5061 }
5062
5063 module_init(megaraid_init);
5064 module_exit(megaraid_exit);
5065
5066 /* vi: set ts=8 sw=8 tw=78: */
Linux with added FPC-III support