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[net-next-2.6.git] / drivers / scsi / megaraid.c
CommitLineData
1da177e4
LT		 1/*
2 *
3 * Linux MegaRAID device driver
4 *
3492b328 5 * Copyright (c) 2002 LSI Logic Corporation.
1da177e4
LT		 6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
11 *
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
13 * - fixes
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
15 * - lots of cleanups.
16 *
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
19 *
3492b328
JS		 20 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju
21 * <Seokmann.Ju@lsil.com>
1da177e4
LT		 22 *
23 * Description: Linux device driver for LSI Logic MegaRAID controller
24 *
25 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
26 * 518, 520, 531, 532
27 *
28 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
29 * and others. Please send updates to the mailing list
30 * linux-scsi@vger.kernel.org .
31 *
32 */
33
34#include <linux/mm.h>
35#include <linux/fs.h>
36#include <linux/blkdev.h>
37#include <asm/uaccess.h>
38#include <asm/io.h>
8d115f84 39#include <linux/completion.h>
1da177e4
LT		 40#include <linux/delay.h>
41#include <linux/proc_fs.h>
42#include <linux/reboot.h>
43#include <linux/module.h>
44#include <linux/list.h>
45#include <linux/interrupt.h>
46#include <linux/pci.h>
47#include <linux/init.h>
48#include <scsi/scsicam.h>
49
50#include "scsi.h"
51#include <scsi/scsi_host.h>
52
53#include "megaraid.h"
54
3492b328 55#define MEGARAID_MODULE_VERSION "2.00.4"
1da177e4 56
3492b328
JS		 57MODULE_AUTHOR ("sju@lsil.com");
58MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");
1da177e4
LT		 59MODULE_LICENSE ("GPL");
60MODULE_VERSION(MEGARAID_MODULE_VERSION);
61
62static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;
63module_param(max_cmd_per_lun, uint, 0);
64MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
65
66static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;
67module_param(max_sectors_per_io, ushort, 0);
68MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
69
70
71static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;
72module_param(max_mbox_busy_wait, ushort, 0);
73MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
74
75#define RDINDOOR(adapter) readl((adapter)->base + 0x20)
76#define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
77#define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
78#define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
79
80/*
81 * Global variables
82 */
83
84static int hba_count;
85static adapter_t *hba_soft_state[MAX_CONTROLLERS];
86static struct proc_dir_entry *mega_proc_dir_entry;
87
88/* For controller re-ordering */
89static struct mega_hbas mega_hbas[MAX_CONTROLLERS];
90
91/*
92 * The File Operations structure for the serial/ioctl interface of the driver
93 */
94static struct file_operations megadev_fops = {
95 .owner = THIS_MODULE,
96 .ioctl = megadev_ioctl,
97 .open = megadev_open,
98};
99
100/*
101 * Array to structures for storing the information about the controllers. This
102 * information is sent to the user level applications, when they do an ioctl
103 * for this information.
104 */
105static struct mcontroller mcontroller[MAX_CONTROLLERS];
106
107/* The current driver version */
108static u32 driver_ver = 0x02000000;
109
110/* major number used by the device for character interface */
111static int major;
112
113#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
114
115
116/*
117 * Debug variable to print some diagnostic messages
118 */
119static int trace_level;
120
121/**
122 * mega_setup_mailbox()
123 * @adapter - pointer to our soft state
124 *
125 * Allocates a 8 byte aligned memory for the handshake mailbox.
126 */
127static int
128mega_setup_mailbox(adapter_t *adapter)
129{
130 unsigned long align;
131
132 adapter->una_mbox64 = pci_alloc_consistent(adapter->dev,
133 sizeof(mbox64_t), &adapter->una_mbox64_dma);
134
135 if( !adapter->una_mbox64 ) return -1;
136
137 adapter->mbox = &adapter->una_mbox64->mbox;
138
139 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &
140 (~0UL ^ 0xFUL));
141
142 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);
143
144 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);
145
146 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;
147
148 /*
149 * Register the mailbox if the controller is an io-mapped controller
150 */
151 if( adapter->flag & BOARD_IOMAP ) {
152
153 outb_p(adapter->mbox_dma & 0xFF,
154 adapter->host->io_port + MBOX_PORT0);
155
156 outb_p((adapter->mbox_dma >> 8) & 0xFF,
157 adapter->host->io_port + MBOX_PORT1);
158
159 outb_p((adapter->mbox_dma >> 16) & 0xFF,
160 adapter->host->io_port + MBOX_PORT2);
161
162 outb_p((adapter->mbox_dma >> 24) & 0xFF,
163 adapter->host->io_port + MBOX_PORT3);
164
165 outb_p(ENABLE_MBOX_BYTE,
166 adapter->host->io_port + ENABLE_MBOX_REGION);
167
168 irq_ack(adapter);
169
170 irq_enable(adapter);
171 }
172
173 return 0;
174}
175
176
177/*
178 * mega_query_adapter()
179 * @adapter - pointer to our soft state
180 *
181 * Issue the adapter inquiry commands to the controller and find out
182 * information and parameter about the devices attached
183 */
184static int
185mega_query_adapter(adapter_t *adapter)
186{
187 dma_addr_t prod_info_dma_handle;
188 mega_inquiry3 *inquiry3;
189 u8 raw_mbox[sizeof(struct mbox_out)];
190 mbox_t *mbox;
191 int retval;
192
193 /* Initialize adapter inquiry mailbox */
194
195 mbox = (mbox_t *)raw_mbox;
196
197 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
198 memset(&mbox->m_out, 0, sizeof(raw_mbox));
199
200 /*
201 * Try to issue Inquiry3 command
202 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
203 * update enquiry3 structure
204 */
205 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
206
207 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;
208
209 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
210 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */
211 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */
212
213 /* Issue a blocking command to the card */
214 if ((retval = issue_scb_block(adapter, raw_mbox))) {
215 /* the adapter does not support 40ld */
216
217 mraid_ext_inquiry *ext_inq;
218 mraid_inquiry *inq;
219 dma_addr_t dma_handle;
220
221 ext_inq = pci_alloc_consistent(adapter->dev,
222 sizeof(mraid_ext_inquiry), &dma_handle);
223
224 if( ext_inq == NULL ) return -1;
225
226 inq = &ext_inq->raid_inq;
227
228 mbox->m_out.xferaddr = (u32)dma_handle;
229
230 /*issue old 0x04 command to adapter */
231 mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ;
232
233 issue_scb_block(adapter, raw_mbox);
234
235 /*
236 * update Enquiry3 and ProductInfo structures with
237 * mraid_inquiry structure
238 */
239 mega_8_to_40ld(inq, inquiry3,
240 (mega_product_info *)&adapter->product_info);
241
242 pci_free_consistent(adapter->dev, sizeof(mraid_ext_inquiry),
243 ext_inq, dma_handle);
244
245 } else { /*adapter supports 40ld */
246 adapter->flag |= BOARD_40LD;
247
248 /*
249 * get product_info, which is static information and will be
250 * unchanged
251 */
252 prod_info_dma_handle = pci_map_single(adapter->dev, (void *)
253 &adapter->product_info,
254 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
255
256 mbox->m_out.xferaddr = prod_info_dma_handle;
257
258 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */
259 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */
260
261 if ((retval = issue_scb_block(adapter, raw_mbox)))
262 printk(KERN_WARNING
263 "megaraid: Product_info cmd failed with error: %d\n",
264 retval);
265
266 pci_unmap_single(adapter->dev, prod_info_dma_handle,
267 sizeof(mega_product_info), PCI_DMA_FROMDEVICE);
268 }
269
270
271 /*
272 * kernel scans the channels from 0 to <= max_channel
273 */
274 adapter->host->max_channel =
275 adapter->product_info.nchannels + NVIRT_CHAN -1;
276
277 adapter->host->max_id = 16; /* max targets per channel */
278
279 adapter->host->max_lun = 7; /* Upto 7 luns for non disk devices */
280
281 adapter->host->cmd_per_lun = max_cmd_per_lun;
282
283 adapter->numldrv = inquiry3->num_ldrv;
284
285 adapter->max_cmds = adapter->product_info.max_commands;
286
287 if(adapter->max_cmds > MAX_COMMANDS)
288 adapter->max_cmds = MAX_COMMANDS;
289
290 adapter->host->can_queue = adapter->max_cmds - 1;
291
292 /*
293 * Get the maximum number of scatter-gather elements supported by this
294 * firmware
295 */
296 mega_get_max_sgl(adapter);
297
298 adapter->host->sg_tablesize = adapter->sglen;
299
300
301 /* use HP firmware and bios version encoding */
302 if (adapter->product_info.subsysvid == HP_SUBSYS_VID) {
303 sprintf (adapter->fw_version, "%c%d%d.%d%d",
304 adapter->product_info.fw_version[2],
305 adapter->product_info.fw_version[1] >> 8,
306 adapter->product_info.fw_version[1] & 0x0f,
307 adapter->product_info.fw_version[0] >> 8,
308 adapter->product_info.fw_version[0] & 0x0f);
309 sprintf (adapter->bios_version, "%c%d%d.%d%d",
310 adapter->product_info.bios_version[2],
311 adapter->product_info.bios_version[1] >> 8,
312 adapter->product_info.bios_version[1] & 0x0f,
313 adapter->product_info.bios_version[0] >> 8,
314 adapter->product_info.bios_version[0] & 0x0f);
315 } else {
316 memcpy(adapter->fw_version,
317 (char *)adapter->product_info.fw_version, 4);
318 adapter->fw_version[4] = 0;
319
320 memcpy(adapter->bios_version,
321 (char *)adapter->product_info.bios_version, 4);
322
323 adapter->bios_version[4] = 0;
324 }
325
326 printk(KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives.\n",
327 adapter->fw_version, adapter->bios_version, adapter->numldrv);
328
329 /*
330 * Do we support extended (>10 bytes) cdbs
331 */
332 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);
333 if (adapter->support_ext_cdb)
334 printk(KERN_NOTICE "megaraid: supports extended CDBs.\n");
335
336
337 return 0;
338}
339
340/**
341 * mega_runpendq()
342 * @adapter - pointer to our soft state
343 *
344 * Runs through the list of pending requests.
345 */
346static inline void
347mega_runpendq(adapter_t *adapter)
348{
349 if(!list_empty(&adapter->pending_list))
350 __mega_runpendq(adapter);
351}
352
353/*
354 * megaraid_queue()
355 * @scmd - Issue this scsi command
356 * @done - the callback hook into the scsi mid-layer
357 *
358 * The command queuing entry point for the mid-layer.
359 */
360static int
361megaraid_queue(Scsi_Cmnd *scmd, void (*done)(Scsi_Cmnd *))
362{
363 adapter_t *adapter;
364 scb_t *scb;
365 int busy=0;
cb0258a2 366 unsigned long flags;
1da177e4
LT		 367
368 adapter = (adapter_t *)scmd->device->host->hostdata;
369
370 scmd->scsi_done = done;
371
372
373 /*
374 * Allocate and build a SCB request
375 * busy flag will be set if mega_build_cmd() command could not
376 * allocate scb. We will return non-zero status in that case.
377 * NOTE: scb can be null even though certain commands completed
378 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
379 * return 0 in that case.
380 */
381
cb0258a2 382 spin_lock_irqsave(&adapter->lock, flags);
1da177e4 383 scb = mega_build_cmd(adapter, scmd, &busy);
238f9b06
CH		 384 if (!scb)
385 goto out;
1da177e4 386
238f9b06
CH		 387 scb->state |= SCB_PENDQ;
388 list_add_tail(&scb->list, &adapter->pending_list);
1da177e4 389
238f9b06
CH		 390 /*
391 * Check if the HBA is in quiescent state, e.g., during a
392 * delete logical drive opertion. If it is, don't run
393 * the pending_list.
394 */
395 if (atomic_read(&adapter->quiescent) == 0)
396 mega_runpendq(adapter);
1da177e4 397
238f9b06
CH		 398 busy = 0;
399 out:
400 spin_unlock_irqrestore(&adapter->lock, flags);
1da177e4
LT		 401 return busy;
402}
403
404/**
405 * mega_allocate_scb()
406 * @adapter - pointer to our soft state
407 * @cmd - scsi command from the mid-layer
408 *
409 * Allocate a SCB structure. This is the central structure for controller
410 * commands.
411 */
412static inline scb_t *
413mega_allocate_scb(adapter_t *adapter, Scsi_Cmnd *cmd)
414{
415 struct list_head *head = &adapter->free_list;
416 scb_t *scb;
417
418 /* Unlink command from Free List */
419 if( !list_empty(head) ) {
420
421 scb = list_entry(head->next, scb_t, list);
422
423 list_del_init(head->next);
424
425 scb->state = SCB_ACTIVE;
426 scb->cmd = cmd;
427 scb->dma_type = MEGA_DMA_TYPE_NONE;
428
429 return scb;
430 }
431
432 return NULL;
433}
434
435/**
436 * mega_get_ldrv_num()
437 * @adapter - pointer to our soft state
438 * @cmd - scsi mid layer command
439 * @channel - channel on the controller
440 *
441 * Calculate the logical drive number based on the information in scsi command
442 * and the channel number.
443 */
444static inline int
445mega_get_ldrv_num(adapter_t *adapter, Scsi_Cmnd *cmd, int channel)
446{
447 int tgt;
448 int ldrv_num;
449
450 tgt = cmd->device->id;
451
452 if ( tgt > adapter->this_id )
453 tgt--; /* we do not get inquires for initiator id */
454
455 ldrv_num = (channel * 15) + tgt;
456
457
458 /*
459 * If we have a logical drive with boot enabled, project it first
460 */
461 if( adapter->boot_ldrv_enabled ) {
462 if( ldrv_num == 0 ) {
463 ldrv_num = adapter->boot_ldrv;
464 }
465 else {
466 if( ldrv_num <= adapter->boot_ldrv ) {
467 ldrv_num--;
468 }
469 }
470 }
471
472 /*
473 * If "delete logical drive" feature is enabled on this controller.
474 * Do only if at least one delete logical drive operation was done.
475 *
476 * Also, after logical drive deletion, instead of logical drive number,
477 * the value returned should be 0x80+logical drive id.
478 *
479 * These is valid only for IO commands.
480 */
481
482 if (adapter->support_random_del && adapter->read_ldidmap )
483 switch (cmd->cmnd[0]) {
484 case READ_6: /* fall through */
485 case WRITE_6: /* fall through */
486 case READ_10: /* fall through */
487 case WRITE_10:
488 ldrv_num += 0x80;
489 }
490
491 return ldrv_num;
492}
493
494/**
495 * mega_build_cmd()
496 * @adapter - pointer to our soft state
497 * @cmd - Prepare using this scsi command
498 * @busy - busy flag if no resources
499 *
500 * Prepares a command and scatter gather list for the controller. This routine
501 * also finds out if the commands is intended for a logical drive or a
502 * physical device and prepares the controller command accordingly.
503 *
504 * We also re-order the logical drives and physical devices based on their
505 * boot settings.
506 */
507static scb_t *
508mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
509{
510 mega_ext_passthru *epthru;
511 mega_passthru *pthru;
512 scb_t *scb;
513 mbox_t *mbox;
514 long seg;
515 char islogical;
516 int max_ldrv_num;
517 int channel = 0;
518 int target = 0;
519 int ldrv_num = 0; /* logical drive number */
520
521
522 /*
523 * filter the internal and ioctl commands
524 */
525 if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
526 return cmd->buffer;
527 }
528
529
530 /*
531 * We know what channels our logical drives are on - mega_find_card()
532 */
533 islogical = adapter->logdrv_chan[cmd->device->channel];
534
535 /*
536 * The theory: If physical drive is chosen for boot, all the physical
537 * devices are exported before the logical drives, otherwise physical
538 * devices are pushed after logical drives, in which case - Kernel sees
539 * the physical devices on virtual channel which is obviously converted
540 * to actual channel on the HBA.
541 */
542 if( adapter->boot_pdrv_enabled ) {
543 if( islogical ) {
544 /* logical channel */
545 channel = cmd->device->channel -
546 adapter->product_info.nchannels;
547 }
548 else {
549 /* this is physical channel */
550 channel = cmd->device->channel;
551 target = cmd->device->id;
552
553 /*
554 * boot from a physical disk, that disk needs to be
555 * exposed first IF both the channels are SCSI, then
556 * booting from the second channel is not allowed.
557 */
558 if( target == 0 ) {
559 target = adapter->boot_pdrv_tgt;
560 }
561 else if( target == adapter->boot_pdrv_tgt ) {
562 target = 0;
563 }
564 }
565 }
566 else {
567 if( islogical ) {
568 /* this is the logical channel */
569 channel = cmd->device->channel;
570 }
571 else {
572 /* physical channel */
573 channel = cmd->device->channel - NVIRT_CHAN;
574 target = cmd->device->id;
575 }
576 }
577
578
579 if(islogical) {
580
581 /* have just LUN 0 for each target on virtual channels */
582 if (cmd->device->lun) {
583 cmd->result = (DID_BAD_TARGET << 16);
584 cmd->scsi_done(cmd);
585 return NULL;
586 }
587
588 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);
589
590
591 max_ldrv_num = (adapter->flag & BOARD_40LD) ?
592 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;
593
594 /*
595 * max_ldrv_num increases by 0x80 if some logical drive was
596 * deleted.
597 */
598 if(adapter->read_ldidmap)
599 max_ldrv_num += 0x80;
600
601 if(ldrv_num > max_ldrv_num ) {
602 cmd->result = (DID_BAD_TARGET << 16);
603 cmd->scsi_done(cmd);
604 return NULL;
605 }
606
607 }
608 else {
609 if( cmd->device->lun > 7) {
610 /*
611 * Do not support lun >7 for physically accessed
612 * devices
613 */
614 cmd->result = (DID_BAD_TARGET << 16);
615 cmd->scsi_done(cmd);
616 return NULL;
617 }
618 }
619
620 /*
621 *
622 * Logical drive commands
623 *
624 */
625 if(islogical) {
626 switch (cmd->cmnd[0]) {
627 case TEST_UNIT_READY:
1da177e4
LT		 628#if MEGA_HAVE_CLUSTERING
629 /*
630 * Do we support clustering and is the support enabled
631 * If no, return success always
632 */
633 if( !adapter->has_cluster ) {
634 cmd->result = (DID_OK << 16);
635 cmd->scsi_done(cmd);
636 return NULL;
637 }
638
639 if(!(scb = mega_allocate_scb(adapter, cmd))) {
640 *busy = 1;
641 return NULL;
642 }
643
644 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
645 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;
646 scb->raw_mbox[3] = ldrv_num;
647
648 scb->dma_direction = PCI_DMA_NONE;
649
650 return scb;
651#else
652 cmd->result = (DID_OK << 16);
653 cmd->scsi_done(cmd);
654 return NULL;
655#endif
656
51c928c3
JB		 657 case MODE_SENSE: {
658 char *buf;
659
660 if (cmd->use_sg) {
661 struct scatterlist *sg;
662
663 sg = (struct scatterlist *)cmd->request_buffer;
664 buf = kmap_atomic(sg->page, KM_IRQ0) +
665 sg->offset;
666 } else
667 buf = cmd->request_buffer;
f0353301 668 memset(buf, 0, cmd->cmnd[4]);
51c928c3
JB		 669 if (cmd->use_sg) {
670 struct scatterlist *sg;
671
672 sg = (struct scatterlist *)cmd->request_buffer;
673 kunmap_atomic(buf - sg->offset, KM_IRQ0);
674 }
1da177e4
LT		 675 cmd->result = (DID_OK << 16);
676 cmd->scsi_done(cmd);
677 return NULL;
51c928c3 678 }
1da177e4
LT		 679
680 case READ_CAPACITY:
681 case INQUIRY:
682
683 if(!(adapter->flag & (1L << cmd->device->channel))) {
684
685 printk(KERN_NOTICE
686 "scsi%d: scanning scsi channel %d ",
687 adapter->host->host_no,
688 cmd->device->channel);
689 printk("for logical drives.\n");
690
691 adapter->flag |= (1L << cmd->device->channel);
692 }
693
694 /* Allocate a SCB and initialize passthru */
695 if(!(scb = mega_allocate_scb(adapter, cmd))) {
696 *busy = 1;
697 return NULL;
698 }
699 pthru = scb->pthru;
700
701 mbox = (mbox_t *)scb->raw_mbox;
702 memset(mbox, 0, sizeof(scb->raw_mbox));
703 memset(pthru, 0, sizeof(mega_passthru));
704
705 pthru->timeout = 0;
706 pthru->ars = 1;
707 pthru->reqsenselen = 14;
708 pthru->islogical = 1;
709 pthru->logdrv = ldrv_num;
710 pthru->cdblen = cmd->cmd_len;
711 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
712
713 if( adapter->has_64bit_addr ) {
714 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
715 }
716 else {
717 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
718 }
719
720 scb->dma_direction = PCI_DMA_FROMDEVICE;
721
722 pthru->numsgelements = mega_build_sglist(adapter, scb,
723 &pthru->dataxferaddr, &pthru->dataxferlen);
724
725 mbox->m_out.xferaddr = scb->pthru_dma_addr;
726
727 return scb;
728
729 case READ_6:
730 case WRITE_6:
731 case READ_10:
732 case WRITE_10:
733 case READ_12:
734 case WRITE_12:
735
736 /* Allocate a SCB and initialize mailbox */
737 if(!(scb = mega_allocate_scb(adapter, cmd))) {
738 *busy = 1;
739 return NULL;
740 }
741 mbox = (mbox_t *)scb->raw_mbox;
742
743 memset(mbox, 0, sizeof(scb->raw_mbox));
744 mbox->m_out.logdrv = ldrv_num;
745
746 /*
747 * A little hack: 2nd bit is zero for all scsi read
748 * commands and is set for all scsi write commands
749 */
750 if( adapter->has_64bit_addr ) {
751 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
752 MEGA_MBOXCMD_LWRITE64:
753 MEGA_MBOXCMD_LREAD64 ;
754 }
755 else {
756 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?
757 MEGA_MBOXCMD_LWRITE:
758 MEGA_MBOXCMD_LREAD ;
759 }
760
761 /*
762 * 6-byte READ(0x08) or WRITE(0x0A) cdb
763 */
764 if( cmd->cmd_len == 6 ) {
765 mbox->m_out.numsectors = (u32) cmd->cmnd[4];
766 mbox->m_out.lba =
767 ((u32)cmd->cmnd[1] << 16) |
768 ((u32)cmd->cmnd[2] << 8) |
769 (u32)cmd->cmnd[3];
770
771 mbox->m_out.lba &= 0x1FFFFF;
772
773#if MEGA_HAVE_STATS
774 /*
775 * Take modulo 0x80, since the logical drive
776 * number increases by 0x80 when a logical
777 * drive was deleted
778 */
779 if (*cmd->cmnd == READ_6) {
780 adapter->nreads[ldrv_num%0x80]++;
781 adapter->nreadblocks[ldrv_num%0x80] +=
782 mbox->m_out.numsectors;
783 } else {
784 adapter->nwrites[ldrv_num%0x80]++;
785 adapter->nwriteblocks[ldrv_num%0x80] +=
786 mbox->m_out.numsectors;
787 }
788#endif
789 }
790
791 /*
792 * 10-byte READ(0x28) or WRITE(0x2A) cdb
793 */
794 if( cmd->cmd_len == 10 ) {
795 mbox->m_out.numsectors =
796 (u32)cmd->cmnd[8] |
797 ((u32)cmd->cmnd[7] << 8);
798 mbox->m_out.lba =
799 ((u32)cmd->cmnd[2] << 24) |
800 ((u32)cmd->cmnd[3] << 16) |
801 ((u32)cmd->cmnd[4] << 8) |
802 (u32)cmd->cmnd[5];
803
804#if MEGA_HAVE_STATS
805 if (*cmd->cmnd == READ_10) {
806 adapter->nreads[ldrv_num%0x80]++;
807 adapter->nreadblocks[ldrv_num%0x80] +=
808 mbox->m_out.numsectors;
809 } else {
810 adapter->nwrites[ldrv_num%0x80]++;
811 adapter->nwriteblocks[ldrv_num%0x80] +=
812 mbox->m_out.numsectors;
813 }
814#endif
815 }
816
817 /*
818 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
819 */
820 if( cmd->cmd_len == 12 ) {
821 mbox->m_out.lba =
822 ((u32)cmd->cmnd[2] << 24) |
823 ((u32)cmd->cmnd[3] << 16) |
824 ((u32)cmd->cmnd[4] << 8) |
825 (u32)cmd->cmnd[5];
826
827 mbox->m_out.numsectors =
828 ((u32)cmd->cmnd[6] << 24) |
829 ((u32)cmd->cmnd[7] << 16) |
830 ((u32)cmd->cmnd[8] << 8) |
831 (u32)cmd->cmnd[9];
832
833#if MEGA_HAVE_STATS
834 if (*cmd->cmnd == READ_12) {
835 adapter->nreads[ldrv_num%0x80]++;
836 adapter->nreadblocks[ldrv_num%0x80] +=
837 mbox->m_out.numsectors;
838 } else {
839 adapter->nwrites[ldrv_num%0x80]++;
840 adapter->nwriteblocks[ldrv_num%0x80] +=
841 mbox->m_out.numsectors;
842 }
843#endif
844 }
845
846 /*
847 * If it is a read command
848 */
849 if( (*cmd->cmnd & 0x0F) == 0x08 ) {
850 scb->dma_direction = PCI_DMA_FROMDEVICE;
851 }
852 else {
853 scb->dma_direction = PCI_DMA_TODEVICE;
854 }
855
856 /* Calculate Scatter-Gather info */
857 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
858 (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
859
860 return scb;
861
862#if MEGA_HAVE_CLUSTERING
863 case RESERVE: /* Fall through */
864 case RELEASE:
865
866 /*
867 * Do we support clustering and is the support enabled
868 */
869 if( ! adapter->has_cluster ) {
870
871 cmd->result = (DID_BAD_TARGET << 16);
872 cmd->scsi_done(cmd);
873 return NULL;
874 }
875
876 /* Allocate a SCB and initialize mailbox */
877 if(!(scb = mega_allocate_scb(adapter, cmd))) {
878 *busy = 1;
879 return NULL;
880 }
881
882 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;
883 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?
884 MEGA_RESERVE_LD : MEGA_RELEASE_LD;
885
886 scb->raw_mbox[3] = ldrv_num;
887
888 scb->dma_direction = PCI_DMA_NONE;
889
890 return scb;
891#endif
892
893 default:
894 cmd->result = (DID_BAD_TARGET << 16);
895 cmd->scsi_done(cmd);
896 return NULL;
897 }
898 }
899
900 /*
901 * Passthru drive commands
902 */
903 else {
904 /* Allocate a SCB and initialize passthru */
905 if(!(scb = mega_allocate_scb(adapter, cmd))) {
906 *busy = 1;
907 return NULL;
908 }
909
910 mbox = (mbox_t *)scb->raw_mbox;
911 memset(mbox, 0, sizeof(scb->raw_mbox));
912
913 if( adapter->support_ext_cdb ) {
914
915 epthru = mega_prepare_extpassthru(adapter, scb, cmd,
916 channel, target);
917
918 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;
919
920 mbox->m_out.xferaddr = scb->epthru_dma_addr;
921
922 }
923 else {
924
925 pthru = mega_prepare_passthru(adapter, scb, cmd,
926 channel, target);
927
928 /* Initialize mailbox */
929 if( adapter->has_64bit_addr ) {
930 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;
931 }
932 else {
933 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;
934 }
935
936 mbox->m_out.xferaddr = scb->pthru_dma_addr;
937
938 }
939 return scb;
940 }
941 return NULL;
942}
943
944
945/**
946 * mega_prepare_passthru()
947 * @adapter - pointer to our soft state
948 * @scb - our scsi control block
949 * @cmd - scsi command from the mid-layer
950 * @channel - actual channel on the controller
951 * @target - actual id on the controller.
952 *
953 * prepare a command for the scsi physical devices.
954 */
955static mega_passthru *
956mega_prepare_passthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
957 int channel, int target)
958{
959 mega_passthru *pthru;
960
961 pthru = scb->pthru;
962 memset(pthru, 0, sizeof (mega_passthru));
963
964 /* 0=6sec/1=60sec/2=10min/3=3hrs */
965 pthru->timeout = 2;
966
967 pthru->ars = 1;
968 pthru->reqsenselen = 14;
969 pthru->islogical = 0;
970
971 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
972
973 pthru->target = (adapter->flag & BOARD_40LD) ?
974 (channel << 4) | target : target;
975
976 pthru->cdblen = cmd->cmd_len;
977 pthru->logdrv = cmd->device->lun;
978
979 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);
980
981 /* Not sure about the direction */
982 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
983
984 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
985 switch (cmd->cmnd[0]) {
986 case INQUIRY:
987 case READ_CAPACITY:
988 if(!(adapter->flag & (1L << cmd->device->channel))) {
989
990 printk(KERN_NOTICE
991 "scsi%d: scanning scsi channel %d [P%d] ",
992 adapter->host->host_no,
993 cmd->device->channel, channel);
994 printk("for physical devices.\n");
995
996 adapter->flag |= (1L << cmd->device->channel);
997 }
998 /* Fall through */
999 default:
1000 pthru->numsgelements = mega_build_sglist(adapter, scb,
1001 &pthru->dataxferaddr, &pthru->dataxferlen);
1002 break;
1003 }
1004 return pthru;
1005}
1006
1007
1008/**
1009 * mega_prepare_extpassthru()
1010 * @adapter - pointer to our soft state
1011 * @scb - our scsi control block
1012 * @cmd - scsi command from the mid-layer
1013 * @channel - actual channel on the controller
1014 * @target - actual id on the controller.
1015 *
1016 * prepare a command for the scsi physical devices. This rountine prepares
1017 * commands for devices which can take extended CDBs (>10 bytes)
1018 */
1019static mega_ext_passthru *
1020mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, Scsi_Cmnd *cmd,
1021 int channel, int target)
1022{
1023 mega_ext_passthru *epthru;
1024
1025 epthru = scb->epthru;
1026 memset(epthru, 0, sizeof(mega_ext_passthru));
1027
1028 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1029 epthru->timeout = 2;
1030
1031 epthru->ars = 1;
1032 epthru->reqsenselen = 14;
1033 epthru->islogical = 0;
1034
1035 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;
1036 epthru->target = (adapter->flag & BOARD_40LD) ?
1037 (channel << 4) | target : target;
1038
1039 epthru->cdblen = cmd->cmd_len;
1040 epthru->logdrv = cmd->device->lun;
1041
1042 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);
1043
1044 /* Not sure about the direction */
1045 scb->dma_direction = PCI_DMA_BIDIRECTIONAL;
1046
1047 switch(cmd->cmnd[0]) {
1048 case INQUIRY:
1049 case READ_CAPACITY:
1050 if(!(adapter->flag & (1L << cmd->device->channel))) {
1051
1052 printk(KERN_NOTICE
1053 "scsi%d: scanning scsi channel %d [P%d] ",
1054 adapter->host->host_no,
1055 cmd->device->channel, channel);
1056 printk("for physical devices.\n");
1057
1058 adapter->flag |= (1L << cmd->device->channel);
1059 }
1060 /* Fall through */
1061 default:
1062 epthru->numsgelements = mega_build_sglist(adapter, scb,
1063 &epthru->dataxferaddr, &epthru->dataxferlen);
1064 break;
1065 }
1066
1067 return epthru;
1068}
1069
1070static void
1071__mega_runpendq(adapter_t *adapter)
1072{
1073 scb_t *scb;
1074 struct list_head *pos, *next;
1075
1076 /* Issue any pending commands to the card */
1077 list_for_each_safe(pos, next, &adapter->pending_list) {
1078
1079 scb = list_entry(pos, scb_t, list);
1080
1081 if( !(scb->state & SCB_ISSUED) ) {
1082
1083 if( issue_scb(adapter, scb) != 0 )
1084 return;
1085 }
1086 }
1087
1088 return;
1089}
1090
1091
1092/**
1093 * issue_scb()
1094 * @adapter - pointer to our soft state
1095 * @scb - scsi control block
1096 *
1097 * Post a command to the card if the mailbox is available, otherwise return
1098 * busy. We also take the scb from the pending list if the mailbox is
1099 * available.
1100 */
1101static int
1102issue_scb(adapter_t *adapter, scb_t *scb)
1103{
1104 volatile mbox64_t *mbox64 = adapter->mbox64;
1105 volatile mbox_t *mbox = adapter->mbox;
1106 unsigned int i = 0;
1107
1108 if(unlikely(mbox->m_in.busy)) {
1109 do {
1110 udelay(1);
1111 i++;
1112 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );
1113
1114 if(mbox->m_in.busy) return -1;
1115 }
1116
1117 /* Copy mailbox data into host structure */
1118 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox,
1119 sizeof(struct mbox_out));
1120
1121 mbox->m_out.cmdid = scb->idx; /* Set cmdid */
1122 mbox->m_in.busy = 1; /* Set busy */
1123
1124
1125 /*
1126 * Increment the pending queue counter
1127 */
1128 atomic_inc(&adapter->pend_cmds);
1129
1130 switch (mbox->m_out.cmd) {
1131 case MEGA_MBOXCMD_LREAD64:
1132 case MEGA_MBOXCMD_LWRITE64:
1133 case MEGA_MBOXCMD_PASSTHRU64:
1134 case MEGA_MBOXCMD_EXTPTHRU:
1135 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1136 mbox64->xfer_segment_hi = 0;
1137 mbox->m_out.xferaddr = 0xFFFFFFFF;
1138 break;
1139 default:
1140 mbox64->xfer_segment_lo = 0;
1141 mbox64->xfer_segment_hi = 0;
1142 }
1143
1144 /*
1145 * post the command
1146 */
1147 scb->state |= SCB_ISSUED;
1148
1149 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1150 mbox->m_in.poll = 0;
1151 mbox->m_in.ack = 0;
1152 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1153 }
1154 else {
1155 irq_enable(adapter);
1156 issue_command(adapter);
1157 }
1158
1159 return 0;
1160}
1161
1162/*
1163 * Wait until the controller's mailbox is available
1164 */
1165static inline int
1166mega_busywait_mbox (adapter_t *adapter)
1167{
1168 if (adapter->mbox->m_in.busy)
1169 return __mega_busywait_mbox(adapter);
1170 return 0;
1171}
1172
1173/**
1174 * issue_scb_block()
1175 * @adapter - pointer to our soft state
1176 * @raw_mbox - the mailbox
1177 *
1178 * Issue a scb in synchronous and non-interrupt mode
1179 */
1180static int
1181issue_scb_block(adapter_t *adapter, u_char *raw_mbox)
1182{
1183 volatile mbox64_t *mbox64 = adapter->mbox64;
1184 volatile mbox_t *mbox = adapter->mbox;
1185 u8 byte;
1186
1187 /* Wait until mailbox is free */
1188 if(mega_busywait_mbox (adapter))
1189 goto bug_blocked_mailbox;
1190
1191 /* Copy mailbox data into host structure */
1192 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));
1193 mbox->m_out.cmdid = 0xFE;
1194 mbox->m_in.busy = 1;
1195
1196 switch (raw_mbox[0]) {
1197 case MEGA_MBOXCMD_LREAD64:
1198 case MEGA_MBOXCMD_LWRITE64:
1199 case MEGA_MBOXCMD_PASSTHRU64:
1200 case MEGA_MBOXCMD_EXTPTHRU:
1201 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;
1202 mbox64->xfer_segment_hi = 0;
1203 mbox->m_out.xferaddr = 0xFFFFFFFF;
1204 break;
1205 default:
1206 mbox64->xfer_segment_lo = 0;
1207 mbox64->xfer_segment_hi = 0;
1208 }
1209
1210 if( likely(adapter->flag & BOARD_MEMMAP) ) {
1211 mbox->m_in.poll = 0;
1212 mbox->m_in.ack = 0;
1213 mbox->m_in.numstatus = 0xFF;
1214 mbox->m_in.status = 0xFF;
1215 WRINDOOR(adapter, adapter->mbox_dma | 0x1);
1216
1217 while((volatile u8)mbox->m_in.numstatus == 0xFF)
1218 cpu_relax();
1219
1220 mbox->m_in.numstatus = 0xFF;
1221
1222 while( (volatile u8)mbox->m_in.poll != 0x77 )
1223 cpu_relax();
1224
1225 mbox->m_in.poll = 0;
1226 mbox->m_in.ack = 0x77;
1227
1228 WRINDOOR(adapter, adapter->mbox_dma | 0x2);
1229
1230 while(RDINDOOR(adapter) & 0x2)
1231 cpu_relax();
1232 }
1233 else {
1234 irq_disable(adapter);
1235 issue_command(adapter);
1236
1237 while (!((byte = irq_state(adapter)) & INTR_VALID))
1238 cpu_relax();
1239
1240 set_irq_state(adapter, byte);
1241 irq_enable(adapter);
1242 irq_ack(adapter);
1243 }
1244
1245 return mbox->m_in.status;
1246
1247bug_blocked_mailbox:
1248 printk(KERN_WARNING "megaraid: Blocked mailbox......!!\n");
1249 udelay (1000);
1250 return -1;
1251}
1252
1253
1254/**
1255 * megaraid_isr_iomapped()
1256 * @irq - irq
1257 * @devp - pointer to our soft state
1258 * @regs - unused
1259 *
1260 * Interrupt service routine for io-mapped controllers.
1261 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1262 * and service the completed commands.
1263 */
1264static irqreturn_t
1265megaraid_isr_iomapped(int irq, void *devp, struct pt_regs *regs)
1266{
1267 adapter_t *adapter = devp;
1268 unsigned long flags;
1269 u8 status;
1270 u8 nstatus;
1271 u8 completed[MAX_FIRMWARE_STATUS];
1272 u8 byte;
1273 int handled = 0;
1274
1275
1276 /*
1277 * loop till F/W has more commands for us to complete.
1278 */
1279 spin_lock_irqsave(&adapter->lock, flags);
1280
1281 do {
1282 /* Check if a valid interrupt is pending */
1283 byte = irq_state(adapter);
1284 if( (byte & VALID_INTR_BYTE) == 0 ) {
1285 /*
1286 * No more pending commands
1287 */
1288 goto out_unlock;
1289 }
1290 set_irq_state(adapter, byte);
1291
1292 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1293 == 0xFF)
1294 cpu_relax();
1295 adapter->mbox->m_in.numstatus = 0xFF;
1296
1297 status = adapter->mbox->m_in.status;
1298
1299 /*
1300 * decrement the pending queue counter
1301 */
1302 atomic_sub(nstatus, &adapter->pend_cmds);
1303
1304 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1305 nstatus);
1306
1307 /* Acknowledge interrupt */
1308 irq_ack(adapter);
1309
1310 mega_cmd_done(adapter, completed, nstatus, status);
1311
1312 mega_rundoneq(adapter);
1313
1314 handled = 1;
1315
1316 /* Loop through any pending requests */
1317 if(atomic_read(&adapter->quiescent) == 0) {
1318 mega_runpendq(adapter);
1319 }
1320
1321 } while(1);
1322
1323 out_unlock:
1324
1325 spin_unlock_irqrestore(&adapter->lock, flags);
1326
1327 return IRQ_RETVAL(handled);
1328}
1329
1330
1331/**
1332 * megaraid_isr_memmapped()
1333 * @irq - irq
1334 * @devp - pointer to our soft state
1335 * @regs - unused
1336 *
1337 * Interrupt service routine for memory-mapped controllers.
1338 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1339 * and service the completed commands.
1340 */
1341static irqreturn_t
1342megaraid_isr_memmapped(int irq, void *devp, struct pt_regs *regs)
1343{
1344 adapter_t *adapter = devp;
1345 unsigned long flags;
1346 u8 status;
1347 u32 dword = 0;
1348 u8 nstatus;
1349 u8 completed[MAX_FIRMWARE_STATUS];
1350 int handled = 0;
1351
1352
1353 /*
1354 * loop till F/W has more commands for us to complete.
1355 */
1356 spin_lock_irqsave(&adapter->lock, flags);
1357
1358 do {
1359 /* Check if a valid interrupt is pending */
1360 dword = RDOUTDOOR(adapter);
1361 if(dword != 0x10001234) {
1362 /*
1363 * No more pending commands
1364 */
1365 goto out_unlock;
1366 }
1367 WROUTDOOR(adapter, 0x10001234);
1368
1369 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)
1370 == 0xFF) {
1371 cpu_relax();
1372 }
1373 adapter->mbox->m_in.numstatus = 0xFF;
1374
1375 status = adapter->mbox->m_in.status;
1376
1377 /*
1378 * decrement the pending queue counter
1379 */
1380 atomic_sub(nstatus, &adapter->pend_cmds);
1381
1382 memcpy(completed, (void *)adapter->mbox->m_in.completed,
1383 nstatus);
1384
1385 /* Acknowledge interrupt */
1386 WRINDOOR(adapter, 0x2);
1387
1388 handled = 1;
1389
1390 while( RDINDOOR(adapter) & 0x02 ) cpu_relax();
1391
1392 mega_cmd_done(adapter, completed, nstatus, status);
1393
1394 mega_rundoneq(adapter);
1395
1396 /* Loop through any pending requests */
1397 if(atomic_read(&adapter->quiescent) == 0) {
1398 mega_runpendq(adapter);
1399 }
1400
1401 } while(1);
1402
1403 out_unlock:
1404
1405 spin_unlock_irqrestore(&adapter->lock, flags);
1406
1407 return IRQ_RETVAL(handled);
1408}
1409/**
1410 * mega_cmd_done()
1411 * @adapter - pointer to our soft state
1412 * @completed - array of ids of completed commands
1413 * @nstatus - number of completed commands
1414 * @status - status of the last command completed
1415 *
1416 * Complete the comamnds and call the scsi mid-layer callback hooks.
1417 */
1418static void
1419mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
1420{
1421 mega_ext_passthru *epthru = NULL;
1422 struct scatterlist *sgl;
1423 Scsi_Cmnd *cmd = NULL;
1424 mega_passthru *pthru = NULL;
1425 mbox_t *mbox = NULL;
1426 u8 c;
1427 scb_t *scb;
1428 int islogical;
1429 int cmdid;
1430 int i;
1431
1432 /*
1433 * for all the commands completed, call the mid-layer callback routine
1434 * and free the scb.
1435 */
1436 for( i = 0; i < nstatus; i++ ) {
1437
1438 cmdid = completed[i];
1439
1440 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1441 scb = &adapter->int_scb;
1442 cmd = scb->cmd;
1443 mbox = (mbox_t *)scb->raw_mbox;
1444
1445 /*
1446 * Internal command interface do not fire the extended
1447 * passthru or 64-bit passthru
1448 */
1449 pthru = scb->pthru;
1450
1451 }
1452 else {
1453 scb = &adapter->scb_list[cmdid];
1454
1455 /*
1456 * Make sure f/w has completed a valid command
1457 */
1458 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {
1459 printk(KERN_CRIT
1460 "megaraid: invalid command ");
1461 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1462 cmdid, scb->state, scb->cmd);
1463
1464 continue;
1465 }
1466
1467 /*
1468 * Was a abort issued for this command
1469 */
1470 if( scb->state & SCB_ABORT ) {
1471
1472 printk(KERN_WARNING
1473 "megaraid: aborted cmd %lx[%x] complete.\n",
1474 scb->cmd->serial_number, scb->idx);
1475
1476 scb->cmd->result = (DID_ABORT << 16);
1477
1478 list_add_tail(SCSI_LIST(scb->cmd),
1479 &adapter->completed_list);
1480
1481 mega_free_scb(adapter, scb);
1482
1483 continue;
1484 }
1485
1486 /*
1487 * Was a reset issued for this command
1488 */
1489 if( scb->state & SCB_RESET ) {
1490
1491 printk(KERN_WARNING
1492 "megaraid: reset cmd %lx[%x] complete.\n",
1493 scb->cmd->serial_number, scb->idx);
1494
1495 scb->cmd->result = (DID_RESET << 16);
1496
1497 list_add_tail(SCSI_LIST(scb->cmd),
1498 &adapter->completed_list);
1499
1500 mega_free_scb (adapter, scb);
1501
1502 continue;
1503 }
1504
1505 cmd = scb->cmd;
1506 pthru = scb->pthru;
1507 epthru = scb->epthru;
1508 mbox = (mbox_t *)scb->raw_mbox;
1509
1510#if MEGA_HAVE_STATS
1511 {
1512
1513 int logdrv = mbox->m_out.logdrv;
1514
1515 islogical = adapter->logdrv_chan[cmd->channel];
1516 /*
1517 * Maintain an error counter for the logical drive.
1518 * Some application like SNMP agent need such
1519 * statistics
1520 */
1521 if( status && islogical && (cmd->cmnd[0] == READ_6 ||
1522 cmd->cmnd[0] == READ_10 ||
1523 cmd->cmnd[0] == READ_12)) {
1524 /*
1525 * Logical drive number increases by 0x80 when
1526 * a logical drive is deleted
1527 */
1528 adapter->rd_errors[logdrv%0x80]++;
1529 }
1530
1531 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||
1532 cmd->cmnd[0] == WRITE_10 ||
1533 cmd->cmnd[0] == WRITE_12)) {
1534 /*
1535 * Logical drive number increases by 0x80 when
1536 * a logical drive is deleted
1537 */
1538 adapter->wr_errors[logdrv%0x80]++;
1539 }
1540
1541 }
1542#endif
1543 }
1544
1545 /*
1546 * Do not return the presence of hard disk on the channel so,
1547 * inquiry sent, and returned data==hard disk or removable
1548 * hard disk and not logical, request should return failure! -
1549 * PJ
1550 */
1551 islogical = adapter->logdrv_chan[cmd->device->channel];
1552 if( cmd->cmnd[0] == INQUIRY && !islogical ) {
1553
1554 if( cmd->use_sg ) {
1555 sgl = (struct scatterlist *)
1556 cmd->request_buffer;
1557
1558 if( sgl->page ) {
1559 c = *(unsigned char *)
1560 page_address((&sgl[0])->page) +
1561 (&sgl[0])->offset;
1562 }
1563 else {
1564 printk(KERN_WARNING
1565 "megaraid: invalid sg.\n");
1566 c = 0;
1567 }
1568 }
1569 else {
1570 c = *(u8 *)cmd->request_buffer;
1571 }
1572
1573 if(IS_RAID_CH(adapter, cmd->device->channel) &&
1574 ((c & 0x1F ) == TYPE_DISK)) {
1575 status = 0xF0;
1576 }
1577 }
1578
1579 /* clear result; otherwise, success returns corrupt value */
1580 cmd->result = 0;
1581
1582 /* Convert MegaRAID status to Linux error code */
1583 switch (status) {
1584 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1585 cmd->result |= (DID_OK << 16);
1586 break;
1587
1588 case 0x02: /* ERROR_ABORTED, i.e.
1589 SCSI_STATUS_CHECK_CONDITION */
1590
1591 /* set sense_buffer and result fields */
1592 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||
1593 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {
1594
1595 memcpy(cmd->sense_buffer, pthru->reqsensearea,
1596 14);
1597
1598 cmd->result = (DRIVER_SENSE << 24) |
1599 (DID_OK << 16) |
1600 (CHECK_CONDITION << 1);
1601 }
1602 else {
1603 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {
1604
1605 memcpy(cmd->sense_buffer,
1606 epthru->reqsensearea, 14);
1607
1608 cmd->result = (DRIVER_SENSE << 24) |
1609 (DID_OK << 16) |
1610 (CHECK_CONDITION << 1);
1611 } else {
1612 cmd->sense_buffer[0] = 0x70;
1613 cmd->sense_buffer[2] = ABORTED_COMMAND;
1614 cmd->result |= (CHECK_CONDITION << 1);
1615 }
1616 }
1617 break;
1618
1619 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1620 SCSI_STATUS_BUSY */
1621 cmd->result |= (DID_BUS_BUSY << 16) | status;
1622 break;
1623
1624 default:
1625#if MEGA_HAVE_CLUSTERING
1626 /*
1627 * If TEST_UNIT_READY fails, we know
1628 * MEGA_RESERVATION_STATUS failed
1629 */
1630 if( cmd->cmnd[0] == TEST_UNIT_READY ) {
1631 cmd->result |= (DID_ERROR << 16) |
1632 (RESERVATION_CONFLICT << 1);
1633 }
1634 else
1635 /*
1636 * Error code returned is 1 if Reserve or Release
1637 * failed or the input parameter is invalid
1638 */
1639 if( status == 1 &&
1640 (cmd->cmnd[0] == RESERVE ||
1641 cmd->cmnd[0] == RELEASE) ) {
1642
1643 cmd->result |= (DID_ERROR << 16) |
1644 (RESERVATION_CONFLICT << 1);
1645 }
1646 else
1647#endif
1648 cmd->result |= (DID_BAD_TARGET << 16)|status;
1649 }
1650
1651 /*
1652 * Only free SCBs for the commands coming down from the
1653 * mid-layer, not for which were issued internally
1654 *
1655 * For internal command, restore the status returned by the
1656 * firmware so that user can interpret it.
1657 */
1658 if( cmdid == CMDID_INT_CMDS ) { /* internal command */
1659 cmd->result = status;
1660
1661 /*
1662 * Remove the internal command from the pending list
1663 */
1664 list_del_init(&scb->list);
1665 scb->state = SCB_FREE;
1666 }
1667 else {
1668 mega_free_scb(adapter, scb);
1669 }
1670
1671 /* Add Scsi_Command to end of completed queue */
1672 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);
1673 }
1674}
1675
1676
1677/*
1678 * mega_runpendq()
1679 *
1680 * Run through the list of completed requests and finish it
1681 */
1682static void
1683mega_rundoneq (adapter_t *adapter)
1684{
1685 Scsi_Cmnd *cmd;
1686 struct list_head *pos;
1687
1688 list_for_each(pos, &adapter->completed_list) {
1689
0a04137e 1690 struct scsi_pointer* spos = (struct scsi_pointer *)pos;
1da177e4
LT		 1691
1692 cmd = list_entry(spos, Scsi_Cmnd, SCp);
1693 cmd->scsi_done(cmd);
1694 }
1695
1696 INIT_LIST_HEAD(&adapter->completed_list);
1697}
1698
1699
1700/*
1701 * Free a SCB structure
1702 * Note: We assume the scsi commands associated with this scb is not free yet.
1703 */
1704static void
1705mega_free_scb(adapter_t *adapter, scb_t *scb)
1706{
51c928c3
JB		 1707 unsigned long length;
1708
1da177e4
LT		 1709 switch( scb->dma_type ) {
1710
1711 case MEGA_DMA_TYPE_NONE:
1712 break;
1713
1714 case MEGA_BULK_DATA:
51c928c3
JB		 1715 if (scb->cmd->use_sg == 0)
1716 length = scb->cmd->request_bufflen;
1717 else {
1718 struct scatterlist *sgl =
1719 (struct scatterlist *)scb->cmd->request_buffer;
1720 length = sgl->length;
1721 }
1da177e4 1722 pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
51c928c3 1723 length, scb->dma_direction);
1da177e4
LT		 1724 break;
1725
1726 case MEGA_SGLIST:
1727 pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
1728 scb->cmd->use_sg, scb->dma_direction);
1729 break;
1730
1731 default:
1732 break;
1733 }
1734
1735 /*
1736 * Remove from the pending list
1737 */
1738 list_del_init(&scb->list);
1739
1740 /* Link the scb back into free list */
1741 scb->state = SCB_FREE;
1742 scb->cmd = NULL;
1743
1744 list_add(&scb->list, &adapter->free_list);
1745}
1746
1747
1748static int
1749__mega_busywait_mbox (adapter_t *adapter)
1750{
1751 volatile mbox_t *mbox = adapter->mbox;
1752 long counter;
1753
1754 for (counter = 0; counter < 10000; counter++) {
1755 if (!mbox->m_in.busy)
1756 return 0;
1757 udelay(100); yield();
1758 }
1759 return -1; /* give up after 1 second */
1760}
1761
1762/*
1763 * Copies data to SGLIST
1764 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1765 */
1766static int
1767mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
1768{
1769 struct scatterlist *sgl;
1770 struct page *page;
1771 unsigned long offset;
51c928c3 1772 unsigned int length;
1da177e4
LT		 1773 Scsi_Cmnd *cmd;
1774 int sgcnt;
1775 int idx;
1776
1777 cmd = scb->cmd;
1778
1779 /* Scatter-gather not used */
51c928c3
JB		 1780 if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
1781 !adapter->has_64bit_addr)) {
1782
1783 if (cmd->use_sg == 0) {
1784 page = virt_to_page(cmd->request_buffer);
1785 offset = offset_in_page(cmd->request_buffer);
1786 length = cmd->request_bufflen;
1787 } else {
1788 sgl = (struct scatterlist *)cmd->request_buffer;
1789 page = sgl->page;
1790 offset = sgl->offset;
1791 length = sgl->length;
1792 }
1da177e4
LT		 1793
1794 scb->dma_h_bulkdata = pci_map_page(adapter->dev,
1795 page, offset,
51c928c3 1796 length,
1da177e4
LT		 1797 scb->dma_direction);
1798 scb->dma_type = MEGA_BULK_DATA;
1799
1800 /*
1801 * We need to handle special 64-bit commands that need a
1802 * minimum of 1 SG
1803 */
1804 if( adapter->has_64bit_addr ) {
1805 scb->sgl64[0].address = scb->dma_h_bulkdata;
51c928c3 1806 scb->sgl64[0].length = length;
1da177e4 1807 *buf = (u32)scb->sgl_dma_addr;
51c928c3 1808 *len = (u32)length;
1da177e4
LT		 1809 return 1;
1810 }
1811 else {
1812 *buf = (u32)scb->dma_h_bulkdata;
51c928c3 1813 *len = (u32)length;
1da177e4
LT		 1814 }
1815 return 0;
1816 }
1817
1818 sgl = (struct scatterlist *)cmd->request_buffer;
1819
1820 /*
1821 * Copy Scatter-Gather list info into controller structure.
1822 *
1823 * The number of sg elements returned must not exceed our limit
1824 */
1825 sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
1826 scb->dma_direction);
1827
1828 scb->dma_type = MEGA_SGLIST;
1829
1830 if( sgcnt > adapter->sglen ) BUG();
1831
51c928c3
JB		 1832 *len = 0;
1833
1da177e4
LT		 1834 for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
1835
1836 if( adapter->has_64bit_addr ) {
1837 scb->sgl64[idx].address = sg_dma_address(sgl);
51c928c3 1838 *len += scb->sgl64[idx].length = sg_dma_len(sgl);
1da177e4
LT		 1839 }
1840 else {
1841 scb->sgl[idx].address = sg_dma_address(sgl);
51c928c3 1842 *len += scb->sgl[idx].length = sg_dma_len(sgl);
1da177e4
LT		 1843 }
1844 }
1845
1846 /* Reset pointer and length fields */
1847 *buf = scb->sgl_dma_addr;
1848
1da177e4
LT		 1849 /* Return count of SG requests */
1850 return sgcnt;
1851}
1852
1853
1854/*
1855 * mega_8_to_40ld()
1856 *
1857 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1858 * Enquiry3 structures for later use
1859 */
1860static void
1861mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,
1862 mega_product_info *product_info)
1863{
1864 int i;
1865
1866 product_info->max_commands = inquiry->adapter_info.max_commands;
1867 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;
1868 product_info->nchannels = inquiry->adapter_info.nchannels;
1869
1870 for (i = 0; i < 4; i++) {
1871 product_info->fw_version[i] =
1872 inquiry->adapter_info.fw_version[i];
1873
1874 product_info->bios_version[i] =
1875 inquiry->adapter_info.bios_version[i];
1876 }
1877 enquiry3->cache_flush_interval =
1878 inquiry->adapter_info.cache_flush_interval;
1879
1880 product_info->dram_size = inquiry->adapter_info.dram_size;
1881
1882 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;
1883
1884 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {
1885 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];
1886 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];
1887 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];
1888 }
1889
1890 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)
1891 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];
1892}
1893
1894static inline void
1895mega_free_sgl(adapter_t *adapter)
1896{
1897 scb_t *scb;
1898 int i;
1899
1900 for(i = 0; i < adapter->max_cmds; i++) {
1901
1902 scb = &adapter->scb_list[i];
1903
1904 if( scb->sgl64 ) {
1905 pci_free_consistent(adapter->dev,
1906 sizeof(mega_sgl64) * adapter->sglen,
1907 scb->sgl64,
1908 scb->sgl_dma_addr);
1909
1910 scb->sgl64 = NULL;
1911 }
1912
1913 if( scb->pthru ) {
1914 pci_free_consistent(adapter->dev, sizeof(mega_passthru),
1915 scb->pthru, scb->pthru_dma_addr);
1916
1917 scb->pthru = NULL;
1918 }
1919
1920 if( scb->epthru ) {
1921 pci_free_consistent(adapter->dev,
1922 sizeof(mega_ext_passthru),
1923 scb->epthru, scb->epthru_dma_addr);
1924
1925 scb->epthru = NULL;
1926 }
1927
1928 }
1929}
1930
1931
1932/*
1933 * Get information about the card/driver
1934 */
1935const char *
1936megaraid_info(struct Scsi_Host *host)
1937{
1938 static char buffer[512];
1939 adapter_t *adapter;
1940
1941 adapter = (adapter_t *)host->hostdata;
1942
1943 sprintf (buffer,
1944 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1945 adapter->fw_version, adapter->product_info.max_commands,
1946 adapter->host->max_id, adapter->host->max_channel,
1947 adapter->host->max_lun);
1948 return buffer;
1949}
1950
1951/*
1952 * Abort a previous SCSI request. Only commands on the pending list can be
1953 * aborted. All the commands issued to the F/W must complete.
1954 */
1955static int
1956megaraid_abort(Scsi_Cmnd *cmd)
1957{
1958 adapter_t *adapter;
1959 int rval;
1960
1961 adapter = (adapter_t *)cmd->device->host->hostdata;
1962
1963 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);
1964
1965 /*
1966 * This is required here to complete any completed requests
1967 * to be communicated over to the mid layer.
1968 */
1969 mega_rundoneq(adapter);
1970
1971 return rval;
1972}
1973
1974
1975static int
fa4c4966 1976megaraid_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 1977{
1978 adapter_t *adapter;
1979 megacmd_t mc;
1980 int rval;
1981
1982 adapter = (adapter_t *)cmd->device->host->hostdata;
1983
1984#if MEGA_HAVE_CLUSTERING
1985 mc.cmd = MEGA_CLUSTER_CMD;
1986 mc.opcode = MEGA_RESET_RESERVATIONS;
1987
cb0258a2 1988 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 1989 printk(KERN_WARNING
1990 "megaraid: reservation reset failed.\n");
1991 }
1992 else {
1993 printk(KERN_INFO "megaraid: reservation reset.\n");
1994 }
1da177e4
LT		 1995#endif
1996
fa4c4966
JB		 1997 spin_lock_irq(&adapter->lock);
1998
1da177e4
LT		 1999 rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET);
2000
2001 /*
2002 * This is required here to complete any completed requests
2003 * to be communicated over to the mid layer.
2004 */
2005 mega_rundoneq(adapter);
94d0e7b8
JG		 2006 spin_unlock_irq(&adapter->lock);
2007
fa4c4966 2008 return rval;
94d0e7b8 2009}
1da177e4 2010
1da177e4
LT		 2011/**
2012 * megaraid_abort_and_reset()
2013 * @adapter - megaraid soft state
2014 * @cmd - scsi command to be aborted or reset
2015 * @aor - abort or reset flag
2016 *
2017 * Try to locate the scsi command in the pending queue. If found and is not
2018 * issued to the controller, abort/reset it. Otherwise return failure
2019 */
2020static int
2021megaraid_abort_and_reset(adapter_t *adapter, Scsi_Cmnd *cmd, int aor)
2022{
2023 struct list_head *pos, *next;
2024 scb_t *scb;
2025
2026 printk(KERN_WARNING "megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2027 (aor == SCB_ABORT)? "ABORTING":"RESET", cmd->serial_number,
2028 cmd->cmnd[0], cmd->device->channel,
2029 cmd->device->id, cmd->device->lun);
2030
2031 if(list_empty(&adapter->pending_list))
2032 return FALSE;
2033
2034 list_for_each_safe(pos, next, &adapter->pending_list) {
2035
2036 scb = list_entry(pos, scb_t, list);
2037
2038 if (scb->cmd == cmd) { /* Found command */
2039
2040 scb->state |= aor;
2041
2042 /*
2043 * Check if this command has firmare owenership. If
2044 * yes, we cannot reset this command. Whenever, f/w
2045 * completes this command, we will return appropriate
2046 * status from ISR.
2047 */
2048 if( scb->state & SCB_ISSUED ) {
2049
2050 printk(KERN_WARNING
2051 "megaraid: %s-%lx[%x], fw owner.\n",
2052 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2053 cmd->serial_number, scb->idx);
2054
2055 return FALSE;
2056 }
2057 else {
2058
2059 /*
2060 * Not yet issued! Remove from the pending
2061 * list
2062 */
2063 printk(KERN_WARNING
2064 "megaraid: %s-%lx[%x], driver owner.\n",
2065 (aor==SCB_ABORT) ? "ABORTING":"RESET",
2066 cmd->serial_number, scb->idx);
2067
2068 mega_free_scb(adapter, scb);
2069
2070 if( aor == SCB_ABORT ) {
2071 cmd->result = (DID_ABORT << 16);
2072 }
2073 else {
2074 cmd->result = (DID_RESET << 16);
2075 }
2076
2077 list_add_tail(SCSI_LIST(cmd),
2078 &adapter->completed_list);
2079
2080 return TRUE;
2081 }
2082 }
2083 }
2084
2085 return FALSE;
2086}
2087
2088static inline int
2089make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)
2090{
2091 *pdev = kmalloc(sizeof(struct pci_dev), GFP_KERNEL);
2092
2093 if( *pdev == NULL ) return -1;
2094
2095 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));
2096
2097 if( pci_set_dma_mask(*pdev, 0xffffffff) != 0 ) {
2098 kfree(*pdev);
2099 return -1;
2100 }
2101
2102 return 0;
2103}
2104
2105static inline void
2106free_local_pdev(struct pci_dev *pdev)
2107{
2108 kfree(pdev);
2109}
2110
2111/**
2112 * mega_allocate_inquiry()
2113 * @dma_handle - handle returned for dma address
2114 * @pdev - handle to pci device
2115 *
2116 * allocates memory for inquiry structure
2117 */
2118static inline void *
2119mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)
2120{
2121 return pci_alloc_consistent(pdev, sizeof(mega_inquiry3), dma_handle);
2122}
2123
2124
2125static inline void
2126mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)
2127{
2128 pci_free_consistent(pdev, sizeof(mega_inquiry3), inquiry, dma_handle);
2129}
2130
2131
2132#ifdef CONFIG_PROC_FS
2133/* Following code handles /proc fs */
2134
2135#define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2136 S_IRUSR | S_IFREG, \
2137 controller_proc_dir_entry, \
2138 func, adapter)
2139
2140/**
2141 * mega_create_proc_entry()
2142 * @index - index in soft state array
2143 * @parent - parent node for this /proc entry
2144 *
2145 * Creates /proc entries for our controllers.
2146 */
2147static void
2148mega_create_proc_entry(int index, struct proc_dir_entry *parent)
2149{
2150 struct proc_dir_entry *controller_proc_dir_entry = NULL;
2151 u8 string[64] = { 0 };
2152 adapter_t *adapter = hba_soft_state[index];
2153
2154 sprintf(string, "hba%d", adapter->host->host_no);
2155
2156 controller_proc_dir_entry =
2157 adapter->controller_proc_dir_entry = proc_mkdir(string, parent);
2158
2159 if(!controller_proc_dir_entry) {
2160 printk(KERN_WARNING "\nmegaraid: proc_mkdir failed\n");
2161 return;
2162 }
2163 adapter->proc_read = CREATE_READ_PROC("config", proc_read_config);
2164 adapter->proc_stat = CREATE_READ_PROC("stat", proc_read_stat);
2165 adapter->proc_mbox = CREATE_READ_PROC("mailbox", proc_read_mbox);
2166#if MEGA_HAVE_ENH_PROC
2167 adapter->proc_rr = CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate);
2168 adapter->proc_battery = CREATE_READ_PROC("battery-status",
2169 proc_battery);
2170
2171 /*
2172 * Display each physical drive on its channel
2173 */
2174 adapter->proc_pdrvstat[0] = CREATE_READ_PROC("diskdrives-ch0",
2175 proc_pdrv_ch0);
2176 adapter->proc_pdrvstat[1] = CREATE_READ_PROC("diskdrives-ch1",
2177 proc_pdrv_ch1);
2178 adapter->proc_pdrvstat[2] = CREATE_READ_PROC("diskdrives-ch2",
2179 proc_pdrv_ch2);
2180 adapter->proc_pdrvstat[3] = CREATE_READ_PROC("diskdrives-ch3",
2181 proc_pdrv_ch3);
2182
2183 /*
2184 * Display a set of up to 10 logical drive through each of following
2185 * /proc entries
2186 */
2187 adapter->proc_rdrvstat[0] = CREATE_READ_PROC("raiddrives-0-9",
2188 proc_rdrv_10);
2189 adapter->proc_rdrvstat[1] = CREATE_READ_PROC("raiddrives-10-19",
2190 proc_rdrv_20);
2191 adapter->proc_rdrvstat[2] = CREATE_READ_PROC("raiddrives-20-29",
2192 proc_rdrv_30);
2193 adapter->proc_rdrvstat[3] = CREATE_READ_PROC("raiddrives-30-39",
2194 proc_rdrv_40);
2195#endif
2196}
2197
2198
2199/**
2200 * proc_read_config()
2201 * @page - buffer to write the data in
2202 * @start - where the actual data has been written in page
2203 * @offset - same meaning as the read system call
2204 * @count - same meaning as the read system call
2205 * @eof - set if no more data needs to be returned
2206 * @data - pointer to our soft state
2207 *
2208 * Display configuration information about the controller.
2209 */
2210static int
2211proc_read_config(char *page, char **start, off_t offset, int count, int *eof,
2212 void *data)
2213{
2214
2215 adapter_t *adapter = (adapter_t *)data;
2216 int len = 0;
2217
2218 len += sprintf(page+len, "%s", MEGARAID_VERSION);
2219
2220 if(adapter->product_info.product_name[0])
2221 len += sprintf(page+len, "%s\n",
2222 adapter->product_info.product_name);
2223
2224 len += sprintf(page+len, "Controller Type: ");
2225
2226 if( adapter->flag & BOARD_MEMMAP ) {
2227 len += sprintf(page+len,
2228 "438/466/467/471/493/518/520/531/532\n");
2229 }
2230 else {
2231 len += sprintf(page+len,
2232 "418/428/434\n");
2233 }
2234
2235 if(adapter->flag & BOARD_40LD) {
2236 len += sprintf(page+len,
2237 "Controller Supports 40 Logical Drives\n");
2238 }
2239
2240 if(adapter->flag & BOARD_64BIT) {
2241 len += sprintf(page+len,
2242 "Controller capable of 64-bit memory addressing\n");
2243 }
2244 if( adapter->has_64bit_addr ) {
2245 len += sprintf(page+len,
2246 "Controller using 64-bit memory addressing\n");
2247 }
2248 else {
2249 len += sprintf(page+len,
2250 "Controller is not using 64-bit memory addressing\n");
2251 }
2252
2253 len += sprintf(page+len, "Base = %08lx, Irq = %d, ", adapter->base,
2254 adapter->host->irq);
2255
2256 len += sprintf(page+len, "Logical Drives = %d, Channels = %d\n",
2257 adapter->numldrv, adapter->product_info.nchannels);
2258
2259 len += sprintf(page+len, "Version =%s:%s, DRAM = %dMb\n",
2260 adapter->fw_version, adapter->bios_version,
2261 adapter->product_info.dram_size);
2262
2263 len += sprintf(page+len,
2264 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2265 adapter->product_info.max_commands, adapter->max_cmds);
2266
2267 len += sprintf(page+len, "support_ext_cdb = %d\n",
2268 adapter->support_ext_cdb);
2269 len += sprintf(page+len, "support_random_del = %d\n",
2270 adapter->support_random_del);
2271 len += sprintf(page+len, "boot_ldrv_enabled = %d\n",
2272 adapter->boot_ldrv_enabled);
2273 len += sprintf(page+len, "boot_ldrv = %d\n",
2274 adapter->boot_ldrv);
2275 len += sprintf(page+len, "boot_pdrv_enabled = %d\n",
2276 adapter->boot_pdrv_enabled);
2277 len += sprintf(page+len, "boot_pdrv_ch = %d\n",
2278 adapter->boot_pdrv_ch);
2279 len += sprintf(page+len, "boot_pdrv_tgt = %d\n",
2280 adapter->boot_pdrv_tgt);
2281 len += sprintf(page+len, "quiescent = %d\n",
2282 atomic_read(&adapter->quiescent));
2283 len += sprintf(page+len, "has_cluster = %d\n",
2284 adapter->has_cluster);
2285
2286 len += sprintf(page+len, "\nModule Parameters:\n");
2287 len += sprintf(page+len, "max_cmd_per_lun = %d\n",
2288 max_cmd_per_lun);
2289 len += sprintf(page+len, "max_sectors_per_io = %d\n",
2290 max_sectors_per_io);
2291
2292 *eof = 1;
2293
2294 return len;
2295}
2296
2297
2298
2299/**
2300 * proc_read_stat()
2301 * @page - buffer to write the data in
2302 * @start - where the actual data has been written in page
2303 * @offset - same meaning as the read system call
2304 * @count - same meaning as the read system call
2305 * @eof - set if no more data needs to be returned
2306 * @data - pointer to our soft state
2307 *
2308 * Diaplay statistical information about the I/O activity.
2309 */
2310static int
2311proc_read_stat(char *page, char **start, off_t offset, int count, int *eof,
2312 void *data)
2313{
2314 adapter_t *adapter;
2315 int len;
2316 int i;
2317
2318 i = 0; /* avoid compilation warnings */
2319 len = 0;
2320 adapter = (adapter_t *)data;
2321
2322 len = sprintf(page, "Statistical Information for this controller\n");
2323 len += sprintf(page+len, "pend_cmds = %d\n",
2324 atomic_read(&adapter->pend_cmds));
2325#if MEGA_HAVE_STATS
2326 for(i = 0; i < adapter->numldrv; i++) {
2327 len += sprintf(page+len, "Logical Drive %d:\n", i);
2328
2329 len += sprintf(page+len,
2330 "\tReads Issued = %lu, Writes Issued = %lu\n",
2331 adapter->nreads[i], adapter->nwrites[i]);
2332
2333 len += sprintf(page+len,
2334 "\tSectors Read = %lu, Sectors Written = %lu\n",
2335 adapter->nreadblocks[i], adapter->nwriteblocks[i]);
2336
2337 len += sprintf(page+len,
2338 "\tRead errors = %lu, Write errors = %lu\n\n",
2339 adapter->rd_errors[i], adapter->wr_errors[i]);
2340 }
2341#else
2342 len += sprintf(page+len,
2343 "IO and error counters not compiled in driver.\n");
2344#endif
2345
2346 *eof = 1;
2347
2348 return len;
2349}
2350
2351
2352/**
2353 * proc_read_mbox()
2354 * @page - buffer to write the data in
2355 * @start - where the actual data has been written in page
2356 * @offset - same meaning as the read system call
2357 * @count - same meaning as the read system call
2358 * @eof - set if no more data needs to be returned
2359 * @data - pointer to our soft state
2360 *
2361 * Display mailbox information for the last command issued. This information
2362 * is good for debugging.
2363 */
2364static int
2365proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
2366 void *data)
2367{
2368
2369 adapter_t *adapter = (adapter_t *)data;
2370 volatile mbox_t *mbox = adapter->mbox;
2371 int len = 0;
2372
2373 len = sprintf(page, "Contents of Mail Box Structure\n");
2374 len += sprintf(page+len, " Fw Command = 0x%02x\n",
2375 mbox->m_out.cmd);
2376 len += sprintf(page+len, " Cmd Sequence = 0x%02x\n",
2377 mbox->m_out.cmdid);
2378 len += sprintf(page+len, " No of Sectors= %04d\n",
2379 mbox->m_out.numsectors);
2380 len += sprintf(page+len, " LBA = 0x%02x\n",
2381 mbox->m_out.lba);
2382 len += sprintf(page+len, " DTA = 0x%08x\n",
2383 mbox->m_out.xferaddr);
2384 len += sprintf(page+len, " Logical Drive= 0x%02x\n",
2385 mbox->m_out.logdrv);
2386 len += sprintf(page+len, " No of SG Elmt= 0x%02x\n",
2387 mbox->m_out.numsgelements);
2388 len += sprintf(page+len, " Busy = %01x\n",
2389 mbox->m_in.busy);
2390 len += sprintf(page+len, " Status = 0x%02x\n",
2391 mbox->m_in.status);
2392
2393 *eof = 1;
2394
2395 return len;
2396}
2397
2398
2399/**
2400 * proc_rebuild_rate()
2401 * @page - buffer to write the data in
2402 * @start - where the actual data has been written in page
2403 * @offset - same meaning as the read system call
2404 * @count - same meaning as the read system call
2405 * @eof - set if no more data needs to be returned
2406 * @data - pointer to our soft state
2407 *
2408 * Display current rebuild rate
2409 */
2410static int
2411proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
2412 void *data)
2413{
2414 adapter_t *adapter = (adapter_t *)data;
2415 dma_addr_t dma_handle;
2416 caddr_t inquiry;
2417 struct pci_dev *pdev;
2418 int len = 0;
2419
2420 if( make_local_pdev(adapter, &pdev) != 0 ) {
2421 *eof = 1;
2422 return len;
2423 }
2424
2425 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2426 free_local_pdev(pdev);
2427 *eof = 1;
2428 return len;
2429 }
2430
2431 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2432
2433 len = sprintf(page, "Adapter inquiry failed.\n");
2434
2435 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2436
2437 mega_free_inquiry(inquiry, dma_handle, pdev);
2438
2439 free_local_pdev(pdev);
2440
2441 *eof = 1;
2442
2443 return len;
2444 }
2445
2446 if( adapter->flag & BOARD_40LD ) {
2447 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2448 ((mega_inquiry3 *)inquiry)->rebuild_rate);
2449 }
2450 else {
2451 len = sprintf(page, "Rebuild Rate: [%d%%]\n",
2452 ((mraid_ext_inquiry *)
2453 inquiry)->raid_inq.adapter_info.rebuild_rate);
2454 }
2455
2456
2457 mega_free_inquiry(inquiry, dma_handle, pdev);
2458
2459 free_local_pdev(pdev);
2460
2461 *eof = 1;
2462
2463 return len;
2464}
2465
2466
2467/**
2468 * proc_battery()
2469 * @page - buffer to write the data in
2470 * @start - where the actual data has been written in page
2471 * @offset - same meaning as the read system call
2472 * @count - same meaning as the read system call
2473 * @eof - set if no more data needs to be returned
2474 * @data - pointer to our soft state
2475 *
2476 * Display information about the battery module on the controller.
2477 */
2478static int
2479proc_battery(char *page, char **start, off_t offset, int count, int *eof,
2480 void *data)
2481{
2482 adapter_t *adapter = (adapter_t *)data;
2483 dma_addr_t dma_handle;
2484 caddr_t inquiry;
2485 struct pci_dev *pdev;
2486 u8 battery_status = 0;
2487 char str[256];
2488 int len = 0;
2489
2490 if( make_local_pdev(adapter, &pdev) != 0 ) {
2491 *eof = 1;
2492 return len;
2493 }
2494
2495 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2496 free_local_pdev(pdev);
2497 *eof = 1;
2498 return len;
2499 }
2500
2501 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2502
2503 len = sprintf(page, "Adapter inquiry failed.\n");
2504
2505 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2506
2507 mega_free_inquiry(inquiry, dma_handle, pdev);
2508
2509 free_local_pdev(pdev);
2510
2511 *eof = 1;
2512
2513 return len;
2514 }
2515
2516 if( adapter->flag & BOARD_40LD ) {
2517 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
2518 }
2519 else {
2520 battery_status = ((mraid_ext_inquiry *)inquiry)->
2521 raid_inq.adapter_info.battery_status;
2522 }
2523
2524 /*
2525 * Decode the battery status
2526 */
2527 sprintf(str, "Battery Status:[%d]", battery_status);
2528
2529 if(battery_status == MEGA_BATT_CHARGE_DONE)
2530 strcat(str, " Charge Done");
2531
2532 if(battery_status & MEGA_BATT_MODULE_MISSING)
2533 strcat(str, " Module Missing");
2534
2535 if(battery_status & MEGA_BATT_LOW_VOLTAGE)
2536 strcat(str, " Low Voltage");
2537
2538 if(battery_status & MEGA_BATT_TEMP_HIGH)
2539 strcat(str, " Temperature High");
2540
2541 if(battery_status & MEGA_BATT_PACK_MISSING)
2542 strcat(str, " Pack Missing");
2543
2544 if(battery_status & MEGA_BATT_CHARGE_INPROG)
2545 strcat(str, " Charge In-progress");
2546
2547 if(battery_status & MEGA_BATT_CHARGE_FAIL)
2548 strcat(str, " Charge Fail");
2549
2550 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
2551 strcat(str, " Cycles Exceeded");
2552
2553 len = sprintf(page, "%s\n", str);
2554
2555
2556 mega_free_inquiry(inquiry, dma_handle, pdev);
2557
2558 free_local_pdev(pdev);
2559
2560 *eof = 1;
2561
2562 return len;
2563}
2564
2565
2566/**
2567 * proc_pdrv_ch0()
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 0.
2576 */
2577static int
2578proc_pdrv_ch0(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, 0));
2586}
2587
2588
2589/**
2590 * proc_pdrv_ch1()
2591 * @page - buffer to write the data in
2592 * @start - where the actual data has been written in page
2593 * @offset - same meaning as the read system call
2594 * @count - same meaning as the read system call
2595 * @eof - set if no more data needs to be returned
2596 * @data - pointer to our soft state
2597 *
2598 * Display information about the physical drives on physical channel 1.
2599 */
2600static int
2601proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
2602 void *data)
2603{
2604 adapter_t *adapter = (adapter_t *)data;
2605
2606 *eof = 1;
2607
2608 return (proc_pdrv(adapter, page, 1));
2609}
2610
2611
2612/**
2613 * proc_pdrv_ch2()
2614 * @page - buffer to write the data in
2615 * @start - where the actual data has been written in page
2616 * @offset - same meaning as the read system call
2617 * @count - same meaning as the read system call
2618 * @eof - set if no more data needs to be returned
2619 * @data - pointer to our soft state
2620 *
2621 * Display information about the physical drives on physical channel 2.
2622 */
2623static int
2624proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
2625 void *data)
2626{
2627 adapter_t *adapter = (adapter_t *)data;
2628
2629 *eof = 1;
2630
2631 return (proc_pdrv(adapter, page, 2));
2632}
2633
2634
2635/**
2636 * proc_pdrv_ch3()
2637 * @page - buffer to write the data in
2638 * @start - where the actual data has been written in page
2639 * @offset - same meaning as the read system call
2640 * @count - same meaning as the read system call
2641 * @eof - set if no more data needs to be returned
2642 * @data - pointer to our soft state
2643 *
2644 * Display information about the physical drives on physical channel 3.
2645 */
2646static int
2647proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
2648 void *data)
2649{
2650 adapter_t *adapter = (adapter_t *)data;
2651
2652 *eof = 1;
2653
2654 return (proc_pdrv(adapter, page, 3));
2655}
2656
2657
2658/**
2659 * proc_pdrv()
2660 * @page - buffer to write the data in
2661 * @adapter - pointer to our soft state
2662 *
2663 * Display information about the physical drives.
2664 */
2665static int
2666proc_pdrv(adapter_t *adapter, char *page, int channel)
2667{
2668 dma_addr_t dma_handle;
2669 char *scsi_inq;
2670 dma_addr_t scsi_inq_dma_handle;
2671 caddr_t inquiry;
2672 struct pci_dev *pdev;
2673 u8 *pdrv_state;
2674 u8 state;
2675 int tgt;
2676 int max_channels;
2677 int len = 0;
2678 char str[80];
2679 int i;
2680
2681 if( make_local_pdev(adapter, &pdev) != 0 ) {
2682 return len;
2683 }
2684
2685 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2686 goto free_pdev;
2687 }
2688
2689 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2690 len = sprintf(page, "Adapter inquiry failed.\n");
2691
2692 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2693
2694 goto free_inquiry;
2695 }
2696
2697
2698 scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);
2699
2700 if( scsi_inq == NULL ) {
2701 len = sprintf(page, "memory not available for scsi inq.\n");
2702
2703 goto free_inquiry;
2704 }
2705
2706 if( adapter->flag & BOARD_40LD ) {
2707 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
2708 }
2709 else {
2710 pdrv_state = ((mraid_ext_inquiry *)inquiry)->
2711 raid_inq.pdrv_info.pdrv_state;
2712 }
2713
2714 max_channels = adapter->product_info.nchannels;
2715
2716 if( channel >= max_channels ) {
2717 goto free_pci;
2718 }
2719
2720 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {
2721
2722 i = channel*16 + tgt;
2723
2724 state = *(pdrv_state + i);
2725
2726 switch( state & 0x0F ) {
2727
2728 case PDRV_ONLINE:
2729 sprintf(str,
2730 "Channel:%2d Id:%2d State: Online",
2731 channel, tgt);
2732 break;
2733
2734 case PDRV_FAILED:
2735 sprintf(str,
2736 "Channel:%2d Id:%2d State: Failed",
2737 channel, tgt);
2738 break;
2739
2740 case PDRV_RBLD:
2741 sprintf(str,
2742 "Channel:%2d Id:%2d State: Rebuild",
2743 channel, tgt);
2744 break;
2745
2746 case PDRV_HOTSPARE:
2747 sprintf(str,
2748 "Channel:%2d Id:%2d State: Hot spare",
2749 channel, tgt);
2750 break;
2751
2752 default:
2753 sprintf(str,
2754 "Channel:%2d Id:%2d State: Un-configured",
2755 channel, tgt);
2756 break;
2757
2758 }
2759
2760 /*
2761 * This interface displays inquiries for disk drives
2762 * only. Inquries for logical drives and non-disk
2763 * devices are available through /proc/scsi/scsi
2764 */
2765 memset(scsi_inq, 0, 256);
2766 if( mega_internal_dev_inquiry(adapter, channel, tgt,
2767 scsi_inq_dma_handle) ||
2768 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {
2769 continue;
2770 }
2771
2772 /*
2773 * Check for overflow. We print less than 240
2774 * characters for inquiry
2775 */
2776 if( (len + 240) >= PAGE_SIZE ) break;
2777
2778 len += sprintf(page+len, "%s.\n", str);
2779
2780 len += mega_print_inquiry(page+len, scsi_inq);
2781 }
2782
2783free_pci:
2784 pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
2785free_inquiry:
2786 mega_free_inquiry(inquiry, dma_handle, pdev);
2787free_pdev:
2788 free_local_pdev(pdev);
2789
2790 return len;
2791}
2792
2793
2794/*
2795 * Display scsi inquiry
2796 */
2797static int
2798mega_print_inquiry(char *page, char *scsi_inq)
2799{
2800 int len = 0;
2801 int i;
2802
2803 len = sprintf(page, " Vendor: ");
2804 for( i = 8; i < 16; i++ ) {
2805 len += sprintf(page+len, "%c", scsi_inq[i]);
2806 }
2807
2808 len += sprintf(page+len, " Model: ");
2809
2810 for( i = 16; i < 32; i++ ) {
2811 len += sprintf(page+len, "%c", scsi_inq[i]);
2812 }
2813
2814 len += sprintf(page+len, " Rev: ");
2815
2816 for( i = 32; i < 36; i++ ) {
2817 len += sprintf(page+len, "%c", scsi_inq[i]);
2818 }
2819
2820 len += sprintf(page+len, "\n");
2821
2822 i = scsi_inq[0] & 0x1f;
2823
2824 len += sprintf(page+len, " Type: %s ",
2825 i < MAX_SCSI_DEVICE_CODE ? scsi_device_types[i] :
2826 "Unknown ");
2827
2828 len += sprintf(page+len,
2829 " ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);
2830
2831 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
2832 len += sprintf(page+len, " CCS\n");
2833 else
2834 len += sprintf(page+len, "\n");
2835
2836 return len;
2837}
2838
2839
2840/**
2841 * proc_rdrv_10()
2842 * @page - buffer to write the data in
2843 * @start - where the actual data has been written in page
2844 * @offset - same meaning as the read system call
2845 * @count - same meaning as the read system call
2846 * @eof - set if no more data needs to be returned
2847 * @data - pointer to our soft state
2848 *
2849 * Display real time information about the logical drives 0 through 9.
2850 */
2851static int
2852proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
2853 void *data)
2854{
2855 adapter_t *adapter = (adapter_t *)data;
2856
2857 *eof = 1;
2858
2859 return (proc_rdrv(adapter, page, 0, 9));
2860}
2861
2862
2863/**
2864 * proc_rdrv_20()
2865 * @page - buffer to write the data in
2866 * @start - where the actual data has been written in page
2867 * @offset - same meaning as the read system call
2868 * @count - same meaning as the read system call
2869 * @eof - set if no more data needs to be returned
2870 * @data - pointer to our soft state
2871 *
2872 * Display real time information about the logical drives 0 through 9.
2873 */
2874static int
2875proc_rdrv_20(char *page, char **start, off_t offset, int count, int *eof,
2876 void *data)
2877{
2878 adapter_t *adapter = (adapter_t *)data;
2879
2880 *eof = 1;
2881
2882 return (proc_rdrv(adapter, page, 10, 19));
2883}
2884
2885
2886/**
2887 * proc_rdrv_30()
2888 * @page - buffer to write the data in
2889 * @start - where the actual data has been written in page
2890 * @offset - same meaning as the read system call
2891 * @count - same meaning as the read system call
2892 * @eof - set if no more data needs to be returned
2893 * @data - pointer to our soft state
2894 *
2895 * Display real time information about the logical drives 0 through 9.
2896 */
2897static int
2898proc_rdrv_30(char *page, char **start, off_t offset, int count, int *eof,
2899 void *data)
2900{
2901 adapter_t *adapter = (adapter_t *)data;
2902
2903 *eof = 1;
2904
2905 return (proc_rdrv(adapter, page, 20, 29));
2906}
2907
2908
2909/**
2910 * proc_rdrv_40()
2911 * @page - buffer to write the data in
2912 * @start - where the actual data has been written in page
2913 * @offset - same meaning as the read system call
2914 * @count - same meaning as the read system call
2915 * @eof - set if no more data needs to be returned
2916 * @data - pointer to our soft state
2917 *
2918 * Display real time information about the logical drives 0 through 9.
2919 */
2920static int
2921proc_rdrv_40(char *page, char **start, off_t offset, int count, int *eof,
2922 void *data)
2923{
2924 adapter_t *adapter = (adapter_t *)data;
2925
2926 *eof = 1;
2927
2928 return (proc_rdrv(adapter, page, 30, 39));
2929}
2930
2931
2932/**
2933 * proc_rdrv()
2934 * @page - buffer to write the data in
2935 * @adapter - pointer to our soft state
2936 * @start - starting logical drive to display
2937 * @end - ending logical drive to display
2938 *
2939 * We do not print the inquiry information since its already available through
2940 * /proc/scsi/scsi interface
2941 */
2942static int
2943proc_rdrv(adapter_t *adapter, char *page, int start, int end )
2944{
2945 dma_addr_t dma_handle;
2946 logdrv_param *lparam;
2947 megacmd_t mc;
2948 char *disk_array;
2949 dma_addr_t disk_array_dma_handle;
2950 caddr_t inquiry;
2951 struct pci_dev *pdev;
2952 u8 *rdrv_state;
2953 int num_ldrv;
2954 u32 array_sz;
2955 int len = 0;
2956 int i;
2957
2958 if( make_local_pdev(adapter, &pdev) != 0 ) {
2959 return len;
2960 }
2961
2962 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
2963 free_local_pdev(pdev);
2964 return len;
2965 }
2966
2967 if( mega_adapinq(adapter, dma_handle) != 0 ) {
2968
2969 len = sprintf(page, "Adapter inquiry failed.\n");
2970
2971 printk(KERN_WARNING "megaraid: inquiry failed.\n");
2972
2973 mega_free_inquiry(inquiry, dma_handle, pdev);
2974
2975 free_local_pdev(pdev);
2976
2977 return len;
2978 }
2979
2980 memset(&mc, 0, sizeof(megacmd_t));
2981
2982 if( adapter->flag & BOARD_40LD ) {
2983 array_sz = sizeof(disk_array_40ld);
2984
2985 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;
2986
2987 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;
2988 }
2989 else {
2990 array_sz = sizeof(disk_array_8ld);
2991
2992 rdrv_state = ((mraid_ext_inquiry *)inquiry)->
2993 raid_inq.logdrv_info.ldrv_state;
2994
2995 num_ldrv = ((mraid_ext_inquiry *)inquiry)->
2996 raid_inq.logdrv_info.num_ldrv;
2997 }
2998
2999 disk_array = pci_alloc_consistent(pdev, array_sz,
3000 &disk_array_dma_handle);
3001
3002 if( disk_array == NULL ) {
3003 len = sprintf(page, "memory not available.\n");
3004
3005 mega_free_inquiry(inquiry, dma_handle, pdev);
3006
3007 free_local_pdev(pdev);
3008
3009 return len;
3010 }
3011
3012 mc.xferaddr = (u32)disk_array_dma_handle;
3013
3014 if( adapter->flag & BOARD_40LD ) {
3015 mc.cmd = FC_NEW_CONFIG;
3016 mc.opcode = OP_DCMD_READ_CONFIG;
3017
cb0258a2 3018 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 3019
3020 len = sprintf(page, "40LD read config failed.\n");
3021
3022 mega_free_inquiry(inquiry, dma_handle, pdev);
3023
3024 pci_free_consistent(pdev, array_sz, disk_array,
3025 disk_array_dma_handle);
3026
3027 free_local_pdev(pdev);
3028
3029 return len;
3030 }
3031
3032 }
3033 else {
3034 mc.cmd = NEW_READ_CONFIG_8LD;
3035
cb0258a2 3036 if( mega_internal_command(adapter, &mc, NULL) ) {
1da177e4
LT		 3037
3038 mc.cmd = READ_CONFIG_8LD;
3039
cb0258a2 3040 if( mega_internal_command(adapter, &mc,
1da177e4
LT		 3041 NULL) ){
3042
3043 len = sprintf(page,
3044 "8LD read config failed.\n");
3045
3046 mega_free_inquiry(inquiry, dma_handle, pdev);
3047
3048 pci_free_consistent(pdev, array_sz,
3049 disk_array,
3050 disk_array_dma_handle);
3051
3052 free_local_pdev(pdev);
3053
3054 return len;
3055 }
3056 }
3057 }
3058
3059 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {
3060
3061 if( adapter->flag & BOARD_40LD ) {
3062 lparam =
3063 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;
3064 }
3065 else {
3066 lparam =
3067 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;
3068 }
3069
3070 /*
3071 * Check for overflow. We print less than 240 characters for
3072 * information about each logical drive.
3073 */
3074 if( (len + 240) >= PAGE_SIZE ) break;
3075
3076 len += sprintf(page+len, "Logical drive:%2d:, ", i);
3077
3078 switch( rdrv_state[i] & 0x0F ) {
3079 case RDRV_OFFLINE:
3080 len += sprintf(page+len, "state: offline");
3081 break;
3082
3083 case RDRV_DEGRADED:
3084 len += sprintf(page+len, "state: degraded");
3085 break;
3086
3087 case RDRV_OPTIMAL:
3088 len += sprintf(page+len, "state: optimal");
3089 break;
3090
3091 case RDRV_DELETED:
3092 len += sprintf(page+len, "state: deleted");
3093 break;
3094
3095 default:
3096 len += sprintf(page+len, "state: unknown");
3097 break;
3098 }
3099
3100 /*
3101 * Check if check consistency or initialization is going on
3102 * for this logical drive.
3103 */
3104 if( (rdrv_state[i] & 0xF0) == 0x20 ) {
3105 len += sprintf(page+len,
3106 ", check-consistency in progress");
3107 }
3108 else if( (rdrv_state[i] & 0xF0) == 0x10 ) {
3109 len += sprintf(page+len,
3110 ", initialization in progress");
3111 }
3112
3113 len += sprintf(page+len, "\n");
3114
3115 len += sprintf(page+len, "Span depth:%3d, ",
3116 lparam->span_depth);
3117
3118 len += sprintf(page+len, "RAID level:%3d, ",
3119 lparam->level);
3120
3121 len += sprintf(page+len, "Stripe size:%3d, ",
3122 lparam->stripe_sz ? lparam->stripe_sz/2: 128);
3123
3124 len += sprintf(page+len, "Row size:%3d\n",
3125 lparam->row_size);
3126
3127
3128 len += sprintf(page+len, "Read Policy: ");
3129
3130 switch(lparam->read_ahead) {
3131
3132 case NO_READ_AHEAD:
3133 len += sprintf(page+len, "No read ahead, ");
3134 break;
3135
3136 case READ_AHEAD:
3137 len += sprintf(page+len, "Read ahead, ");
3138 break;
3139
3140 case ADAP_READ_AHEAD:
3141 len += sprintf(page+len, "Adaptive, ");
3142 break;
3143
3144 }
3145
3146 len += sprintf(page+len, "Write Policy: ");
3147
3148 switch(lparam->write_mode) {
3149
3150 case WRMODE_WRITE_THRU:
3151 len += sprintf(page+len, "Write thru, ");
3152 break;
3153
3154 case WRMODE_WRITE_BACK:
3155 len += sprintf(page+len, "Write back, ");
3156 break;
3157 }
3158
3159 len += sprintf(page+len, "Cache Policy: ");
3160
3161 switch(lparam->direct_io) {
3162
3163 case CACHED_IO:
3164 len += sprintf(page+len, "Cached IO\n\n");
3165 break;
3166
3167 case DIRECT_IO:
3168 len += sprintf(page+len, "Direct IO\n\n");
3169 break;
3170 }
3171 }
3172
3173 mega_free_inquiry(inquiry, dma_handle, pdev);
3174
3175 pci_free_consistent(pdev, array_sz, disk_array,
3176 disk_array_dma_handle);
3177
3178 free_local_pdev(pdev);
3179
3180 return len;
3181}
3182
3183#endif
3184
3185
3186/**
3187 * megaraid_biosparam()
3188 *
3189 * Return the disk geometry for a particular disk
3190 */
3191static int
3192megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,
3193 sector_t capacity, int geom[])
3194{
3195 adapter_t *adapter;
3196 unsigned char *bh;
3197 int heads;
3198 int sectors;
3199 int cylinders;
3200 int rval;
3201
3202 /* Get pointer to host config structure */
3203 adapter = (adapter_t *)sdev->host->hostdata;
3204
3205 if (IS_RAID_CH(adapter, sdev->channel)) {
3206 /* Default heads (64) & sectors (32) */
3207 heads = 64;
3208 sectors = 32;
3209 cylinders = (ulong)capacity / (heads * sectors);
3210
3211 /*
3212 * Handle extended translation size for logical drives
3213 * > 1Gb
3214 */
3215 if ((ulong)capacity >= 0x200000) {
3216 heads = 255;
3217 sectors = 63;
3218 cylinders = (ulong)capacity / (heads * sectors);
3219 }
3220
3221 /* return result */
3222 geom[0] = heads;
3223 geom[1] = sectors;
3224 geom[2] = cylinders;
3225 }
3226 else {
3227 bh = scsi_bios_ptable(bdev);
3228
3229 if( bh ) {
3230 rval = scsi_partsize(bh, capacity,
3231 &geom[2], &geom[0], &geom[1]);
3232 kfree(bh);
3233 if( rval != -1 )
3234 return rval;
3235 }
3236
3237 printk(KERN_INFO
3238 "megaraid: invalid partition on this disk on channel %d\n",
3239 sdev->channel);
3240
3241 /* Default heads (64) & sectors (32) */
3242 heads = 64;
3243 sectors = 32;
3244 cylinders = (ulong)capacity / (heads * sectors);
3245
3246 /* Handle extended translation size for logical drives > 1Gb */
3247 if ((ulong)capacity >= 0x200000) {
3248 heads = 255;
3249 sectors = 63;
3250 cylinders = (ulong)capacity / (heads * sectors);
3251 }
3252
3253 /* return result */
3254 geom[0] = heads;
3255 geom[1] = sectors;
3256 geom[2] = cylinders;
3257 }
3258
3259 return 0;
3260}
3261
3262/**
3263 * mega_init_scb()
3264 * @adapter - pointer to our soft state
3265 *
3266 * Allocate memory for the various pointers in the scb structures:
3267 * scatter-gather list pointer, passthru and extended passthru structure
3268 * pointers.
3269 */
3270static int
3271mega_init_scb(adapter_t *adapter)
3272{
3273 scb_t *scb;
3274 int i;
3275
3276 for( i = 0; i < adapter->max_cmds; i++ ) {
3277
3278 scb = &adapter->scb_list[i];
3279
3280 scb->sgl64 = NULL;
3281 scb->sgl = NULL;
3282 scb->pthru = NULL;
3283 scb->epthru = NULL;
3284 }
3285
3286 for( i = 0; i < adapter->max_cmds; i++ ) {
3287
3288 scb = &adapter->scb_list[i];
3289
3290 scb->idx = i;
3291
3292 scb->sgl64 = pci_alloc_consistent(adapter->dev,
3293 sizeof(mega_sgl64) * adapter->sglen,
3294 &scb->sgl_dma_addr);
3295
3296 scb->sgl = (mega_sglist *)scb->sgl64;
3297
3298 if( !scb->sgl ) {
3299 printk(KERN_WARNING "RAID: Can't allocate sglist.\n");
3300 mega_free_sgl(adapter);
3301 return -1;
3302 }
3303
3304 scb->pthru = pci_alloc_consistent(adapter->dev,
3305 sizeof(mega_passthru),
3306 &scb->pthru_dma_addr);
3307
3308 if( !scb->pthru ) {
3309 printk(KERN_WARNING "RAID: Can't allocate passthru.\n");
3310 mega_free_sgl(adapter);
3311 return -1;
3312 }
3313
3314 scb->epthru = pci_alloc_consistent(adapter->dev,
3315 sizeof(mega_ext_passthru),
3316 &scb->epthru_dma_addr);
3317
3318 if( !scb->epthru ) {
3319 printk(KERN_WARNING
3320 "Can't allocate extended passthru.\n");
3321 mega_free_sgl(adapter);
3322 return -1;
3323 }
3324
3325
3326 scb->dma_type = MEGA_DMA_TYPE_NONE;
3327
3328 /*
3329 * Link to free list
3330 * lock not required since we are loading the driver, so no
3331 * commands possible right now.
3332 */
3333 scb->state = SCB_FREE;
3334 scb->cmd = NULL;
3335 list_add(&scb->list, &adapter->free_list);
3336 }
3337
3338 return 0;
3339}
3340
3341
3342/**
3343 * megadev_open()
3344 * @inode - unused
3345 * @filep - unused
3346 *
3347 * Routines for the character/ioctl interface to the driver. Find out if this
3348 * is a valid open. If yes, increment the module use count so that it cannot
3349 * be unloaded.
3350 */
3351static int
3352megadev_open (struct inode *inode, struct file *filep)
3353{
3354 /*
3355 * Only allow superuser to access private ioctl interface
3356 */
3357 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;
3358
3359 return 0;
3360}
3361
3362
3363/**
3364 * megadev_ioctl()
3365 * @inode - Our device inode
3366 * @filep - unused
3367 * @cmd - ioctl command
3368 * @arg - user buffer
3369 *
3370 * ioctl entry point for our private ioctl interface. We move the data in from
3371 * the user space, prepare the command (if necessary, convert the old MIMD
3372 * ioctl to new ioctl command), and issue a synchronous command to the
3373 * controller.
3374 */
3375static int
3376megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
3377 unsigned long arg)
3378{
3379 adapter_t *adapter;
3380 nitioctl_t uioc;
3381 int adapno;
3382 int rval;
3383 mega_passthru __user *upthru; /* user address for passthru */
3384 mega_passthru *pthru; /* copy user passthru here */
3385 dma_addr_t pthru_dma_hndl;
3386 void *data = NULL; /* data to be transferred */
3387 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */
3388 megacmd_t mc;
3389 megastat_t __user *ustats;
3390 int num_ldrv;
3391 u32 uxferaddr = 0;
3392 struct pci_dev *pdev;
3393
3394 ustats = NULL; /* avoid compilation warnings */
3395 num_ldrv = 0;
3396
3397 /*
3398 * Make sure only USCSICMD are issued through this interface.
3399 * MIMD application would still fire different command.
3400 */
3401 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {
3402 return -EINVAL;
3403 }
3404
3405 /*
3406 * Check and convert a possible MIMD command to NIT command.
3407 * mega_m_to_n() copies the data from the user space, so we do not
3408 * have to do it here.
3409 * NOTE: We will need some user address to copyout the data, therefore
3410 * the inteface layer will also provide us with the required user
3411 * addresses.
3412 */
3413 memset(&uioc, 0, sizeof(nitioctl_t));
3414 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )
3415 return rval;
3416
3417
3418 switch( uioc.opcode ) {
3419
3420 case GET_DRIVER_VER:
3421 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )
3422 return (-EFAULT);
3423
3424 break;
3425
3426 case GET_N_ADAP:
3427 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )
3428 return (-EFAULT);
3429
3430 /*
3431 * Shucks. MIMD interface returns a positive value for number
3432 * of adapters. TODO: Change it to return 0 when there is no
3433 * applicatio using mimd interface.
3434 */
3435 return hba_count;
3436
3437 case GET_ADAP_INFO:
3438
3439 /*
3440 * Which adapter
3441 */
3442 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3443 return (-ENODEV);
3444
3445 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,
3446 sizeof(struct mcontroller)) )
3447 return (-EFAULT);
3448 break;
3449
3450#if MEGA_HAVE_STATS
3451
3452 case GET_STATS:
3453 /*
3454 * Which adapter
3455 */
3456 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3457 return (-ENODEV);
3458
3459 adapter = hba_soft_state[adapno];
3460
3461 ustats = uioc.uioc_uaddr;
3462
3463 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )
3464 return (-EFAULT);
3465
3466 /*
3467 * Check for the validity of the logical drive number
3468 */
3469 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;
3470
3471 if( copy_to_user(ustats->nreads, adapter->nreads,
3472 num_ldrv*sizeof(u32)) )
3473 return -EFAULT;
3474
3475 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,
3476 num_ldrv*sizeof(u32)) )
3477 return -EFAULT;
3478
3479 if( copy_to_user(ustats->nwrites, adapter->nwrites,
3480 num_ldrv*sizeof(u32)) )
3481 return -EFAULT;
3482
3483 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,
3484 num_ldrv*sizeof(u32)) )
3485 return -EFAULT;
3486
3487 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,
3488 num_ldrv*sizeof(u32)) )
3489 return -EFAULT;
3490
3491 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,
3492 num_ldrv*sizeof(u32)) )
3493 return -EFAULT;
3494
3495 return 0;
3496
3497#endif
3498 case MBOX_CMD:
3499
3500 /*
3501 * Which adapter
3502 */
3503 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )
3504 return (-ENODEV);
3505
3506 adapter = hba_soft_state[adapno];
3507
3508 /*
3509 * Deletion of logical drive is a special case. The adapter
3510 * should be quiescent before this command is issued.
3511 */
3512 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&
3513 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {
3514
3515 /*
3516 * Do we support this feature
3517 */
3518 if( !adapter->support_random_del ) {
3519 printk(KERN_WARNING "megaraid: logdrv ");
3520 printk("delete on non-supporting F/W.\n");
3521
3522 return (-EINVAL);
3523 }
3524
3525 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );
3526
3527 if( rval == 0 ) {
3528 memset(&mc, 0, sizeof(megacmd_t));
3529
3530 mc.status = rval;
3531
3532 rval = mega_n_to_m((void __user *)arg, &mc);
3533 }
3534
3535 return rval;
3536 }
3537 /*
3538 * This interface only support the regular passthru commands.
3539 * Reject extended passthru and 64-bit passthru
3540 */
3541 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||
3542 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {
3543
3544 printk(KERN_WARNING "megaraid: rejected passthru.\n");
3545
3546 return (-EINVAL);
3547 }
3548
3549 /*
3550 * For all internal commands, the buffer must be allocated in
3551 * <4GB address range
3552 */
3553 if( make_local_pdev(adapter, &pdev) != 0 )
3554 return -EIO;
3555
3556 /* Is it a passthru command or a DCMD */
3557 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {
3558 /* Passthru commands */
3559
3560 pthru = pci_alloc_consistent(pdev,
3561 sizeof(mega_passthru),
3562 &pthru_dma_hndl);
3563
3564 if( pthru == NULL ) {
3565 free_local_pdev(pdev);
3566 return (-ENOMEM);
3567 }
3568
3569 /*
3570 * The user passthru structure
3571 */
3572 upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
3573
3574 /*
3575 * Copy in the user passthru here.
3576 */
3577 if( copy_from_user(pthru, upthru,
3578 sizeof(mega_passthru)) ) {
3579
3580 pci_free_consistent(pdev,
3581 sizeof(mega_passthru), pthru,
3582 pthru_dma_hndl);
3583
3584 free_local_pdev(pdev);
3585
3586 return (-EFAULT);
3587 }
3588
3589 /*
3590 * Is there a data transfer
3591 */
3592 if( pthru->dataxferlen ) {
3593 data = pci_alloc_consistent(pdev,
3594 pthru->dataxferlen,
3595 &data_dma_hndl);
3596
3597 if( data == NULL ) {
3598 pci_free_consistent(pdev,
3599 sizeof(mega_passthru),
3600 pthru,
3601 pthru_dma_hndl);
3602
3603 free_local_pdev(pdev);
3604
3605 return (-ENOMEM);
3606 }
3607
3608 /*
3609 * Save the user address and point the kernel
3610 * address at just allocated memory
3611 */
3612 uxferaddr = pthru->dataxferaddr;
3613 pthru->dataxferaddr = data_dma_hndl;
3614 }
3615
3616
3617 /*
3618 * Is data coming down-stream
3619 */
3620 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {
3621 /*
3622 * Get the user data
3623 */
3624 if( copy_from_user(data, (char __user *)uxferaddr,
3625 pthru->dataxferlen) ) {
3626 rval = (-EFAULT);
3627 goto freemem_and_return;
3628 }
3629 }
3630
3631 memset(&mc, 0, sizeof(megacmd_t));
3632
3633 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
3634 mc.xferaddr = (u32)pthru_dma_hndl;
3635
3636 /*
3637 * Issue the command
3638 */
cb0258a2 3639 mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 3640
3641 rval = mega_n_to_m((void __user *)arg, &mc);
3642
3643 if( rval ) goto freemem_and_return;
3644
3645
3646 /*
3647 * Is data going up-stream
3648 */
3649 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
3650 if( copy_to_user((char __user *)uxferaddr, data,
3651 pthru->dataxferlen) ) {
3652 rval = (-EFAULT);
3653 }
3654 }
3655
3656 /*
3657 * Send the request sense data also, irrespective of
3658 * whether the user has asked for it or not.
3659 */
3660 copy_to_user(upthru->reqsensearea,
3661 pthru->reqsensearea, 14);
3662
3663freemem_and_return:
3664 if( pthru->dataxferlen ) {
3665 pci_free_consistent(pdev,
3666 pthru->dataxferlen, data,
3667 data_dma_hndl);
3668 }
3669
3670 pci_free_consistent(pdev, sizeof(mega_passthru),
3671 pthru, pthru_dma_hndl);
3672
3673 free_local_pdev(pdev);
3674
3675 return rval;
3676 }
3677 else {
3678 /* DCMD commands */
3679
3680 /*
3681 * Is there a data transfer
3682 */
3683 if( uioc.xferlen ) {
3684 data = pci_alloc_consistent(pdev,
3685 uioc.xferlen, &data_dma_hndl);
3686
3687 if( data == NULL ) {
3688 free_local_pdev(pdev);
3689 return (-ENOMEM);
3690 }
3691
3692 uxferaddr = MBOX(uioc)->xferaddr;
3693 }
3694
3695 /*
3696 * Is data coming down-stream
3697 */
3698 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {
3699 /*
3700 * Get the user data
3701 */
3702 if( copy_from_user(data, (char __user *)uxferaddr,
3703 uioc.xferlen) ) {
3704
3705 pci_free_consistent(pdev,
3706 uioc.xferlen,
3707 data, data_dma_hndl);
3708
3709 free_local_pdev(pdev);
3710
3711 return (-EFAULT);
3712 }
3713 }
3714
3715 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));
3716
3717 mc.xferaddr = (u32)data_dma_hndl;
3718
3719 /*
3720 * Issue the command
3721 */
cb0258a2 3722 mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 3723
3724 rval = mega_n_to_m((void __user *)arg, &mc);
3725
3726 if( rval ) {
3727 if( uioc.xferlen ) {
3728 pci_free_consistent(pdev,
3729 uioc.xferlen, data,
3730 data_dma_hndl);
3731 }
3732
3733 free_local_pdev(pdev);
3734
3735 return rval;
3736 }
3737
3738 /*
3739 * Is data going up-stream
3740 */
3741 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
3742 if( copy_to_user((char __user *)uxferaddr, data,
3743 uioc.xferlen) ) {
3744
3745 rval = (-EFAULT);
3746 }
3747 }
3748
3749 if( uioc.xferlen ) {
3750 pci_free_consistent(pdev,
3751 uioc.xferlen, data,
3752 data_dma_hndl);
3753 }
3754
3755 free_local_pdev(pdev);
3756
3757 return rval;
3758 }
3759
3760 default:
3761 return (-EINVAL);
3762 }
3763
3764 return 0;
3765}
3766
3767/**
3768 * mega_m_to_n()
3769 * @arg - user address
3770 * @uioc - new ioctl structure
3771 *
3772 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3773 * structure
3774 *
3775 * Converts the older mimd ioctl structure to newer NIT structure
3776 */
3777static int
3778mega_m_to_n(void __user *arg, nitioctl_t *uioc)
3779{
3780 struct uioctl_t uioc_mimd;
3781 char signature[8] = {0};
3782 u8 opcode;
3783 u8 subopcode;
3784
3785
3786 /*
3787 * check is the application conforms to NIT. We do not have to do much
3788 * in that case.
3789 * We exploit the fact that the signature is stored in the very
3790 * begining of the structure.
3791 */
3792
3793 if( copy_from_user(signature, arg, 7) )
3794 return (-EFAULT);
3795
3796 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3797
3798 /*
3799 * NOTE NOTE: The nit ioctl is still under flux because of
3800 * change of mailbox definition, in HPE. No applications yet
3801 * use this interface and let's not have applications use this
3802 * interface till the new specifitions are in place.
3803 */
3804 return -EINVAL;
3805#if 0
3806 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )
3807 return (-EFAULT);
3808 return 0;
3809#endif
3810 }
3811
3812 /*
3813 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3814 *
3815 * Get the user ioctl structure
3816 */
3817 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )
3818 return (-EFAULT);
3819
3820
3821 /*
3822 * Get the opcode and subopcode for the commands
3823 */
3824 opcode = uioc_mimd.ui.fcs.opcode;
3825 subopcode = uioc_mimd.ui.fcs.subopcode;
3826
3827 switch (opcode) {
3828 case 0x82:
3829
3830 switch (subopcode) {
3831
3832 case MEGAIOC_QDRVRVER: /* Query driver version */
3833 uioc->opcode = GET_DRIVER_VER;
3834 uioc->uioc_uaddr = uioc_mimd.data;
3835 break;
3836
3837 case MEGAIOC_QNADAP: /* Get # of adapters */
3838 uioc->opcode = GET_N_ADAP;
3839 uioc->uioc_uaddr = uioc_mimd.data;
3840 break;
3841
3842 case MEGAIOC_QADAPINFO: /* Get adapter information */
3843 uioc->opcode = GET_ADAP_INFO;
3844 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3845 uioc->uioc_uaddr = uioc_mimd.data;
3846 break;
3847
3848 default:
3849 return(-EINVAL);
3850 }
3851
3852 break;
3853
3854
3855 case 0x81:
3856
3857 uioc->opcode = MBOX_CMD;
3858 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3859
3860 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3861
3862 uioc->xferlen = uioc_mimd.ui.fcs.length;
3863
3864 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3865 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3866
3867 break;
3868
3869 case 0x80:
3870
3871 uioc->opcode = MBOX_CMD;
3872 uioc->adapno = uioc_mimd.ui.fcs.adapno;
3873
3874 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);
3875
3876 /*
3877 * Choose the xferlen bigger of input and output data
3878 */
3879 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?
3880 uioc_mimd.outlen : uioc_mimd.inlen;
3881
3882 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;
3883 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;
3884
3885 break;
3886
3887 default:
3888 return (-EINVAL);
3889
3890 }
3891
3892 return 0;
3893}
3894
3895/*
3896 * mega_n_to_m()
3897 * @arg - user address
3898 * @mc - mailbox command
3899 *
3900 * Updates the status information to the application, depending on application
3901 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3902 */
3903static int
3904mega_n_to_m(void __user *arg, megacmd_t *mc)
3905{
3906 nitioctl_t __user *uiocp;
3907 megacmd_t __user *umc;
3908 mega_passthru __user *upthru;
3909 struct uioctl_t __user *uioc_mimd;
3910 char signature[8] = {0};
3911
3912 /*
3913 * check is the application conforms to NIT.
3914 */
3915 if( copy_from_user(signature, arg, 7) )
3916 return -EFAULT;
3917
3918 if( memcmp(signature, "MEGANIT", 7) == 0 ) {
3919
3920 uiocp = arg;
3921
3922 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )
3923 return (-EFAULT);
3924
3925 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3926
3927 umc = MBOX_P(uiocp);
3928
3929 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3930 return -EFAULT;
3931
3932 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))
3933 return (-EFAULT);
3934 }
3935 }
3936 else {
3937 uioc_mimd = arg;
3938
3939 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )
3940 return (-EFAULT);
3941
3942 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
3943
3944 umc = (megacmd_t __user *)uioc_mimd->mbox;
3945
3946 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))
3947 return (-EFAULT);
3948
3949 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )
3950 return (-EFAULT);
3951 }
3952 }
3953
3954 return 0;
3955}
3956
3957
3958/*
3959 * MEGARAID 'FW' commands.
3960 */
3961
3962/**
3963 * mega_is_bios_enabled()
3964 * @adapter - pointer to our soft state
3965 *
3966 * issue command to find out if the BIOS is enabled for this controller
3967 */
3968static int
3969mega_is_bios_enabled(adapter_t *adapter)
3970{
3971 unsigned char raw_mbox[sizeof(struct mbox_out)];
3972 mbox_t *mbox;
3973 int ret;
3974
3975 mbox = (mbox_t *)raw_mbox;
3976
3977 memset(&mbox->m_out, 0, sizeof(raw_mbox));
3978
3979 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
3980
3981 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
3982
3983 raw_mbox[0] = IS_BIOS_ENABLED;
3984 raw_mbox[2] = GET_BIOS;
3985
3986
3987 ret = issue_scb_block(adapter, raw_mbox);
3988
3989 return *(char *)adapter->mega_buffer;
3990}
3991
3992
3993/**
3994 * mega_enum_raid_scsi()
3995 * @adapter - pointer to our soft state
3996 *
3997 * Find out what channels are RAID/SCSI. This information is used to
3998 * differentiate the virtual channels and physical channels and to support
3999 * ROMB feature and non-disk devices.
4000 */
4001static void
4002mega_enum_raid_scsi(adapter_t *adapter)
4003{
4004 unsigned char raw_mbox[sizeof(struct mbox_out)];
4005 mbox_t *mbox;
4006 int i;
4007
4008 mbox = (mbox_t *)raw_mbox;
4009
4010 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4011
4012 /*
4013 * issue command to find out what channels are raid/scsi
4014 */
4015 raw_mbox[0] = CHNL_CLASS;
4016 raw_mbox[2] = GET_CHNL_CLASS;
4017
4018 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4019
4020 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4021
4022 /*
4023 * Non-ROMB firmware fail this command, so all channels
4024 * must be shown RAID
4025 */
4026 adapter->mega_ch_class = 0xFF;
4027
4028 if(!issue_scb_block(adapter, raw_mbox)) {
4029 adapter->mega_ch_class = *((char *)adapter->mega_buffer);
4030
4031 }
4032
4033 for( i = 0; i < adapter->product_info.nchannels; i++ ) {
4034 if( (adapter->mega_ch_class >> i) & 0x01 ) {
4035 printk(KERN_INFO "megaraid: channel[%d] is raid.\n",
4036 i);
4037 }
4038 else {
4039 printk(KERN_INFO "megaraid: channel[%d] is scsi.\n",
4040 i);
4041 }
4042 }
4043
4044 return;
4045}
4046
4047
4048/**
4049 * mega_get_boot_drv()
4050 * @adapter - pointer to our soft state
4051 *
4052 * Find out which device is the boot device. Note, any logical drive or any
4053 * phyical device (e.g., a CDROM) can be designated as a boot device.
4054 */
4055static void
4056mega_get_boot_drv(adapter_t *adapter)
4057{
4058 struct private_bios_data *prv_bios_data;
4059 unsigned char raw_mbox[sizeof(struct mbox_out)];
4060 mbox_t *mbox;
4061 u16 cksum = 0;
4062 u8 *cksum_p;
4063 u8 boot_pdrv;
4064 int i;
4065
4066 mbox = (mbox_t *)raw_mbox;
4067
4068 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4069
4070 raw_mbox[0] = BIOS_PVT_DATA;
4071 raw_mbox[2] = GET_BIOS_PVT_DATA;
4072
4073 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4074
4075 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4076
4077 adapter->boot_ldrv_enabled = 0;
4078 adapter->boot_ldrv = 0;
4079
4080 adapter->boot_pdrv_enabled = 0;
4081 adapter->boot_pdrv_ch = 0;
4082 adapter->boot_pdrv_tgt = 0;
4083
4084 if(issue_scb_block(adapter, raw_mbox) == 0) {
4085 prv_bios_data =
4086 (struct private_bios_data *)adapter->mega_buffer;
4087
4088 cksum = 0;
4089 cksum_p = (char *)prv_bios_data;
4090 for (i = 0; i < 14; i++ ) {
4091 cksum += (u16)(*cksum_p++);
4092 }
4093
4094 if (prv_bios_data->cksum == (u16)(0-cksum) ) {
4095
4096 /*
4097 * If MSB is set, a physical drive is set as boot
4098 * device
4099 */
4100 if( prv_bios_data->boot_drv & 0x80 ) {
4101 adapter->boot_pdrv_enabled = 1;
4102 boot_pdrv = prv_bios_data->boot_drv & 0x7F;
4103 adapter->boot_pdrv_ch = boot_pdrv / 16;
4104 adapter->boot_pdrv_tgt = boot_pdrv % 16;
4105 }
4106 else {
4107 adapter->boot_ldrv_enabled = 1;
4108 adapter->boot_ldrv = prv_bios_data->boot_drv;
4109 }
4110 }
4111 }
4112
4113}
4114
4115/**
4116 * mega_support_random_del()
4117 * @adapter - pointer to our soft state
4118 *
4119 * Find out if this controller supports random deletion and addition of
4120 * logical drives
4121 */
4122static int
4123mega_support_random_del(adapter_t *adapter)
4124{
4125 unsigned char raw_mbox[sizeof(struct mbox_out)];
4126 mbox_t *mbox;
4127 int rval;
4128
4129 mbox = (mbox_t *)raw_mbox;
4130
4131 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4132
4133 /*
4134 * issue command
4135 */
4136 raw_mbox[0] = FC_DEL_LOGDRV;
4137 raw_mbox[2] = OP_SUP_DEL_LOGDRV;
4138
4139 rval = issue_scb_block(adapter, raw_mbox);
4140
4141 return !rval;
4142}
4143
4144
4145/**
4146 * mega_support_ext_cdb()
4147 * @adapter - pointer to our soft state
4148 *
4149 * Find out if this firmware support cdblen > 10
4150 */
4151static int
4152mega_support_ext_cdb(adapter_t *adapter)
4153{
4154 unsigned char raw_mbox[sizeof(struct mbox_out)];
4155 mbox_t *mbox;
4156 int rval;
4157
4158 mbox = (mbox_t *)raw_mbox;
4159
4160 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4161 /*
4162 * issue command to find out if controller supports extended CDBs.
4163 */
4164 raw_mbox[0] = 0xA4;
4165 raw_mbox[2] = 0x16;
4166
4167 rval = issue_scb_block(adapter, raw_mbox);
4168
4169 return !rval;
4170}
4171
4172
4173/**
4174 * mega_del_logdrv()
4175 * @adapter - pointer to our soft state
4176 * @logdrv - logical drive to be deleted
4177 *
4178 * Delete the specified logical drive. It is the responsibility of the user
4179 * app to let the OS know about this operation.
4180 */
4181static int
4182mega_del_logdrv(adapter_t *adapter, int logdrv)
4183{
4184 unsigned long flags;
4185 scb_t *scb;
4186 int rval;
4187
4188 /*
4189 * Stop sending commands to the controller, queue them internally.
4190 * When deletion is complete, ISR will flush the queue.
4191 */
4192 atomic_set(&adapter->quiescent, 1);
4193
4194 /*
4195 * Wait till all the issued commands are complete and there are no
4196 * commands in the pending queue
4197 */
4198 while (atomic_read(&adapter->pend_cmds) > 0 ||
4199 !list_empty(&adapter->pending_list))
4200 msleep(1000); /* sleep for 1s */
4201
4202 rval = mega_do_del_logdrv(adapter, logdrv);
4203
4204 spin_lock_irqsave(&adapter->lock, flags);
4205
4206 /*
4207 * If delete operation was successful, add 0x80 to the logical drive
4208 * ids for commands in the pending queue.
4209 */
4210 if (adapter->read_ldidmap) {
4211 struct list_head *pos;
4212 list_for_each(pos, &adapter->pending_list) {
4213 scb = list_entry(pos, scb_t, list);
4214 if (scb->pthru->logdrv < 0x80 )
4215 scb->pthru->logdrv += 0x80;
4216 }
4217 }
4218
4219 atomic_set(&adapter->quiescent, 0);
4220
4221 mega_runpendq(adapter);
4222
4223 spin_unlock_irqrestore(&adapter->lock, flags);
4224
4225 return rval;
4226}
4227
4228
4229static int
4230mega_do_del_logdrv(adapter_t *adapter, int logdrv)
4231{
4232 megacmd_t mc;
4233 int rval;
4234
4235 memset( &mc, 0, sizeof(megacmd_t));
4236
4237 mc.cmd = FC_DEL_LOGDRV;
4238 mc.opcode = OP_DEL_LOGDRV;
4239 mc.subopcode = logdrv;
4240
cb0258a2 4241 rval = mega_internal_command(adapter, &mc, NULL);
1da177e4
LT		 4242
4243 /* log this event */
4244 if(rval) {
4245 printk(KERN_WARNING "megaraid: Delete LD-%d failed.", logdrv);
4246 return rval;
4247 }
4248
4249 /*
4250 * After deleting first logical drive, the logical drives must be
4251 * addressed by adding 0x80 to the logical drive id.
4252 */
4253 adapter->read_ldidmap = 1;
4254
4255 return rval;
4256}
4257
4258
4259/**
4260 * mega_get_max_sgl()
4261 * @adapter - pointer to our soft state
4262 *
4263 * Find out the maximum number of scatter-gather elements supported by this
4264 * version of the firmware
4265 */
4266static void
4267mega_get_max_sgl(adapter_t *adapter)
4268{
4269 unsigned char raw_mbox[sizeof(struct mbox_out)];
4270 mbox_t *mbox;
4271
4272 mbox = (mbox_t *)raw_mbox;
4273
4274 memset(mbox, 0, sizeof(raw_mbox));
4275
4276 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4277
4278 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4279
4280 raw_mbox[0] = MAIN_MISC_OPCODE;
4281 raw_mbox[2] = GET_MAX_SG_SUPPORT;
4282
4283
4284 if( issue_scb_block(adapter, raw_mbox) ) {
4285 /*
4286 * f/w does not support this command. Choose the default value
4287 */
4288 adapter->sglen = MIN_SGLIST;
4289 }
4290 else {
4291 adapter->sglen = *((char *)adapter->mega_buffer);
4292
4293 /*
4294 * Make sure this is not more than the resources we are
4295 * planning to allocate
4296 */
4297 if ( adapter->sglen > MAX_SGLIST )
4298 adapter->sglen = MAX_SGLIST;
4299 }
4300
4301 return;
4302}
4303
4304
4305/**
4306 * mega_support_cluster()
4307 * @adapter - pointer to our soft state
4308 *
4309 * Find out if this firmware support cluster calls.
4310 */
4311static int
4312mega_support_cluster(adapter_t *adapter)
4313{
4314 unsigned char raw_mbox[sizeof(struct mbox_out)];
4315 mbox_t *mbox;
4316
4317 mbox = (mbox_t *)raw_mbox;
4318
4319 memset(mbox, 0, sizeof(raw_mbox));
4320
4321 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);
4322
4323 mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle;
4324
4325 /*
4326 * Try to get the initiator id. This command will succeed iff the
4327 * clustering is available on this HBA.
4328 */
4329 raw_mbox[0] = MEGA_GET_TARGET_ID;
4330
4331 if( issue_scb_block(adapter, raw_mbox) == 0 ) {
4332
4333 /*
4334 * Cluster support available. Get the initiator target id.
4335 * Tell our id to mid-layer too.
4336 */
4337 adapter->this_id = *(u32 *)adapter->mega_buffer;
4338 adapter->host->this_id = adapter->this_id;
4339
4340 return 1;
4341 }
4342
4343 return 0;
4344}
4345
4346
4347/**
4348 * mega_adapinq()
4349 * @adapter - pointer to our soft state
4350 * @dma_handle - DMA address of the buffer
4351 *
4352 * Issue internal comamnds while interrupts are available.
4353 * We only issue direct mailbox commands from within the driver. ioctl()
4354 * interface using these routines can issue passthru commands.
4355 */
4356static int
4357mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)
4358{
4359 megacmd_t mc;
4360
4361 memset(&mc, 0, sizeof(megacmd_t));
4362
4363 if( adapter->flag & BOARD_40LD ) {
4364 mc.cmd = FC_NEW_CONFIG;
4365 mc.opcode = NC_SUBOP_ENQUIRY3;
4366 mc.subopcode = ENQ3_GET_SOLICITED_FULL;
4367 }
4368 else {
4369 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;
4370 }
4371
4372 mc.xferaddr = (u32)dma_handle;
4373
cb0258a2 4374 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {
1da177e4
LT		 4375 return -1;
4376 }
4377
4378 return 0;
4379}
4380
4381
4382/** mega_internal_dev_inquiry()
4383 * @adapter - pointer to our soft state
4384 * @ch - channel for this device
4385 * @tgt - ID of this device
4386 * @buf_dma_handle - DMA address of the buffer
4387 *
4388 * Issue the scsi inquiry for the specified device.
4389 */
4390static int
4391mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,
4392 dma_addr_t buf_dma_handle)
4393{
4394 mega_passthru *pthru;
4395 dma_addr_t pthru_dma_handle;
4396 megacmd_t mc;
4397 int rval;
4398 struct pci_dev *pdev;
4399
4400
4401 /*
4402 * For all internal commands, the buffer must be allocated in <4GB
4403 * address range
4404 */
4405 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;
4406
4407 pthru = pci_alloc_consistent(pdev, sizeof(mega_passthru),
4408 &pthru_dma_handle);
4409
4410 if( pthru == NULL ) {
4411 free_local_pdev(pdev);
4412 return -1;
4413 }
4414
4415 pthru->timeout = 2;
4416 pthru->ars = 1;
4417 pthru->reqsenselen = 14;
4418 pthru->islogical = 0;
4419
4420 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;
4421
4422 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;
4423
4424 pthru->cdblen = 6;
4425
4426 pthru->cdb[0] = INQUIRY;
4427 pthru->cdb[1] = 0;
4428 pthru->cdb[2] = 0;
4429 pthru->cdb[3] = 0;
4430 pthru->cdb[4] = 255;
4431 pthru->cdb[5] = 0;
4432
4433
4434 pthru->dataxferaddr = (u32)buf_dma_handle;
4435 pthru->dataxferlen = 256;
4436
4437 memset(&mc, 0, sizeof(megacmd_t));
4438
4439 mc.cmd = MEGA_MBOXCMD_PASSTHRU;
4440 mc.xferaddr = (u32)pthru_dma_handle;
4441
cb0258a2 4442 rval = mega_internal_command(adapter, &mc, pthru);
1da177e4
LT		 4443
4444 pci_free_consistent(pdev, sizeof(mega_passthru), pthru,
4445 pthru_dma_handle);
4446
4447 free_local_pdev(pdev);
4448
4449 return rval;
4450}
4451
4452
4453/**
4454 * mega_internal_command()
4455 * @adapter - pointer to our soft state
1da177e4
LT		 4456 * @mc - the mailbox command
4457 * @pthru - Passthru structure for DCDB commands
4458 *
4459 * Issue the internal commands in interrupt mode.
4460 * The last argument is the address of the passthru structure if the command
4461 * to be fired is a passthru command
4462 *
4463 * lockscope specifies whether the caller has already acquired the lock. Of
4464 * course, the caller must know which lock we are talking about.
4465 *
4466 * Note: parameter 'pthru' is null for non-passthru commands.
4467 */
4468static int
cb0258a2 4469mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
1da177e4
LT		 4470{
4471 Scsi_Cmnd *scmd;
4472 struct scsi_device *sdev;
4473 unsigned long flags = 0;
4474 scb_t *scb;
4475 int rval;
4476
4477 /*
4478 * The internal commands share one command id and hence are
4479 * serialized. This is so because we want to reserve maximum number of
4480 * available command ids for the I/O commands.
4481 */
0b950672 4482 mutex_lock(&adapter->int_mtx);
1da177e4
LT		 4483
4484 scb = &adapter->int_scb;
4485 memset(scb, 0, sizeof(scb_t));
4486
4487 scmd = &adapter->int_scmd;
4488 memset(scmd, 0, sizeof(Scsi_Cmnd));
4489
4490 sdev = kmalloc(sizeof(struct scsi_device), GFP_KERNEL);
4491 memset(sdev, 0, sizeof(struct scsi_device));
4492 scmd->device = sdev;
4493
4494 scmd->device->host = adapter->host;
4495 scmd->buffer = (void *)scb;
4496 scmd->cmnd[0] = MEGA_INTERNAL_CMD;
4497
4498 scb->state |= SCB_ACTIVE;
4499 scb->cmd = scmd;
4500
4501 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));
4502
4503 /*
4504 * Is it a passthru command
4505 */
4506 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {
4507
4508 scb->pthru = pthru;
4509 }
4510
4511 scb->idx = CMDID_INT_CMDS;
4512
1da177e4
LT		 4513 megaraid_queue(scmd, mega_internal_done);
4514
8d115f84 4515 wait_for_completion(&adapter->int_waitq);
1da177e4
LT		 4516
4517 rval = scmd->result;
4518 mc->status = scmd->result;
4519 kfree(sdev);
4520
4521 /*
4522 * Print a debug message for all failed commands. Applications can use
4523 * this information.
4524 */
4525 if( scmd->result && trace_level ) {
4526 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4527 mc->cmd, mc->opcode, mc->subopcode, scmd->result);
4528 }
4529
0b950672 4530 mutex_unlock(&adapter->int_mtx);
1da177e4
LT		 4531
4532 return rval;
4533}
4534
4535
4536/**
4537 * mega_internal_done()
4538 * @scmd - internal scsi command
4539 *
4540 * Callback routine for internal commands.
4541 */
4542static void
4543mega_internal_done(Scsi_Cmnd *scmd)
4544{
4545 adapter_t *adapter;
4546
4547 adapter = (adapter_t *)scmd->device->host->hostdata;
4548
8d115f84 4549 complete(&adapter->int_waitq);
1da177e4
LT		 4550
4551}
4552
4553
4554static struct scsi_host_template megaraid_template = {
4555 .module = THIS_MODULE,
4556 .name = "MegaRAID",
3492b328 4557 .proc_name = "megaraid_legacy",
1da177e4
LT		 4558 .info = megaraid_info,
4559 .queuecommand = megaraid_queue,
4560 .bios_param = megaraid_biosparam,
4561 .max_sectors = MAX_SECTORS_PER_IO,
4562 .can_queue = MAX_COMMANDS,
4563 .this_id = DEFAULT_INITIATOR_ID,
4564 .sg_tablesize = MAX_SGLIST,
4565 .cmd_per_lun = DEF_CMD_PER_LUN,
4566 .use_clustering = ENABLE_CLUSTERING,
4567 .eh_abort_handler = megaraid_abort,
4568 .eh_device_reset_handler = megaraid_reset,
4569 .eh_bus_reset_handler = megaraid_reset,
4570 .eh_host_reset_handler = megaraid_reset,
4571};
4572
4573static int __devinit
4574megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
4575{
4576 struct Scsi_Host *host;
4577 adapter_t *adapter;
4578 unsigned long mega_baseport, tbase, flag = 0;
4579 u16 subsysid, subsysvid;
4580 u8 pci_bus, pci_dev_func;
4581 int irq, i, j;
4582 int error = -ENODEV;
4583
4584 if (pci_enable_device(pdev))
4585 goto out;
4586 pci_set_master(pdev);
4587
4588 pci_bus = pdev->bus->number;
4589 pci_dev_func = pdev->devfn;
4590
4591 /*
4592 * The megaraid3 stuff reports the ID of the Intel part which is not
4593 * remotely specific to the megaraid
4594 */
4595 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
4596 u16 magic;
4597 /*
4598 * Don't fall over the Compaq management cards using the same
4599 * PCI identifier
4600 */
4601 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&
4602 pdev->subsystem_device == 0xC000)
4603 return -ENODEV;
4604 /* Now check the magic signature byte */
4605 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);
4606 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)
4607 return -ENODEV;
4608 /* Ok it is probably a megaraid */
4609 }
4610
4611 /*
4612 * For these vendor and device ids, signature offsets are not
4613 * valid and 64 bit is implicit
4614 */
4615 if (id->driver_data & BOARD_64BIT)
4616 flag |= BOARD_64BIT;
4617 else {
4618 u32 magic64;
4619
4620 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);
4621 if (magic64 == HBA_SIGNATURE_64BIT)
4622 flag |= BOARD_64BIT;
4623 }
4624
4625 subsysvid = pdev->subsystem_vendor;
4626 subsysid = pdev->subsystem_device;
4627
4628 printk(KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4629 id->vendor, id->device, pci_bus);
4630
4631 printk("slot %d:func %d\n",
4632 PCI_SLOT(pci_dev_func), PCI_FUNC(pci_dev_func));
4633
4634 /* Read the base port and IRQ from PCI */
4635 mega_baseport = pci_resource_start(pdev, 0);
4636 irq = pdev->irq;
4637
4638 tbase = mega_baseport;
4639 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {
4640 flag |= BOARD_MEMMAP;
4641
4642 if (!request_mem_region(mega_baseport, 128, "megaraid")) {
4643 printk(KERN_WARNING "megaraid: mem region busy!\n");
4644 goto out_disable_device;
4645 }
4646
4647 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);
4648 if (!mega_baseport) {
4649 printk(KERN_WARNING
4650 "megaraid: could not map hba memory\n");
4651 goto out_release_region;
4652 }
4653 } else {
4654 flag |= BOARD_IOMAP;
4655 mega_baseport += 0x10;
4656
4657 if (!request_region(mega_baseport, 16, "megaraid"))
4658 goto out_disable_device;
4659 }
4660
4661 /* Initialize SCSI Host structure */
4662 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));
4663 if (!host)
4664 goto out_iounmap;
4665
4666 adapter = (adapter_t *)host->hostdata;
4667 memset(adapter, 0, sizeof(adapter_t));
4668
4669 printk(KERN_NOTICE
4670 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4671 host->host_no, mega_baseport, irq);
4672
4673 adapter->base = mega_baseport;
4674
4675 INIT_LIST_HEAD(&adapter->free_list);
4676 INIT_LIST_HEAD(&adapter->pending_list);
4677 INIT_LIST_HEAD(&adapter->completed_list);
4678
4679 adapter->flag = flag;
4680 spin_lock_init(&adapter->lock);
1da177e4
LT		 4681
4682 host->cmd_per_lun = max_cmd_per_lun;
4683 host->max_sectors = max_sectors_per_io;
4684
4685 adapter->dev = pdev;
4686 adapter->host = host;
4687
4688 adapter->host->irq = irq;
4689
4690 if (flag & BOARD_MEMMAP)
4691 adapter->host->base = tbase;
4692 else {
4693 adapter->host->io_port = tbase;
4694 adapter->host->n_io_port = 16;
4695 }
4696
4697 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;
4698
4699 /*
4700 * Allocate buffer to issue internal commands.
4701 */
4702 adapter->mega_buffer = pci_alloc_consistent(adapter->dev,
4703 MEGA_BUFFER_SIZE, &adapter->buf_dma_handle);
4704 if (!adapter->mega_buffer) {
4705 printk(KERN_WARNING "megaraid: out of RAM.\n");
4706 goto out_host_put;
4707 }
4708
4709 adapter->scb_list = kmalloc(sizeof(scb_t) * MAX_COMMANDS, GFP_KERNEL);
4710 if (!adapter->scb_list) {
4711 printk(KERN_WARNING "megaraid: out of RAM.\n");
4712 goto out_free_cmd_buffer;
4713 }
4714
4715 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?
4716 megaraid_isr_memmapped : megaraid_isr_iomapped,
4717 SA_SHIRQ, "megaraid", adapter)) {
4718 printk(KERN_WARNING
4719 "megaraid: Couldn't register IRQ %d!\n", irq);
4720 goto out_free_scb_list;
4721 }
4722
4723 if (mega_setup_mailbox(adapter))
4724 goto out_free_irq;
4725
4726 if (mega_query_adapter(adapter))
4727 goto out_free_mbox;
4728
4729 /*
4730 * Have checks for some buggy f/w
4731 */
4732 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {
4733 /*
4734 * Which firmware
4735 */
4736 if (!strcmp(adapter->fw_version, "3.00") ||
4737 !strcmp(adapter->fw_version, "3.01")) {
4738
4739 printk( KERN_WARNING
4740 "megaraid: Your card is a Dell PERC "
4741 "2/SC RAID controller with "
4742 "firmware\nmegaraid: 3.00 or 3.01. "
4743 "This driver is known to have "
4744 "corruption issues\nmegaraid: with "
4745 "those firmware versions on this "
4746 "specific card. In order\nmegaraid: "
4747 "to protect your data, please upgrade "
4748 "your firmware to version\nmegaraid: "
4749 "3.10 or later, available from the "
4750 "Dell Technical Support web\n"
4751 "megaraid: site at\nhttp://support."
4752 "dell.com/us/en/filelib/download/"
4753 "index.asp?fileid=2940\n"
4754 );
4755 }
4756 }
4757
4758 /*
4759 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4760 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4761 * support, since this firmware cannot handle 64 bit
4762 * addressing
4763 */
4764 if ((subsysvid == HP_SUBSYS_VID) &&
4765 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {
4766 /*
4767 * which firmware
4768 */
4769 if (!strcmp(adapter->fw_version, "H01.07") ||
4770 !strcmp(adapter->fw_version, "H01.08") ||
4771 !strcmp(adapter->fw_version, "H01.09") ) {
4772 printk(KERN_WARNING
4773 "megaraid: Firmware H.01.07, "
4774 "H.01.08, and H.01.09 on 1M/2M "
4775 "controllers\n"
4776 "megaraid: do not support 64 bit "
4777 "addressing.\nmegaraid: DISABLING "
4778 "64 bit support.\n");
4779 adapter->flag &= ~BOARD_64BIT;
4780 }
4781 }
4782
4783 if (mega_is_bios_enabled(adapter))
4784 mega_hbas[hba_count].is_bios_enabled = 1;
4785 mega_hbas[hba_count].hostdata_addr = adapter;
4786
4787 /*
4788 * Find out which channel is raid and which is scsi. This is
4789 * for ROMB support.
4790 */
4791 mega_enum_raid_scsi(adapter);
4792
4793 /*
4794 * Find out if a logical drive is set as the boot drive. If
4795 * there is one, will make that as the first logical drive.
4796 * ROMB: Do we have to boot from a physical drive. Then all
4797 * the physical drives would appear before the logical disks.
4798 * Else, all the physical drives would be exported to the mid
4799 * layer after logical drives.
4800 */
4801 mega_get_boot_drv(adapter);
4802
4803 if (adapter->boot_pdrv_enabled) {
4804 j = adapter->product_info.nchannels;
4805 for( i = 0; i < j; i++ )
4806 adapter->logdrv_chan[i] = 0;
4807 for( i = j; i < NVIRT_CHAN + j; i++ )
4808 adapter->logdrv_chan[i] = 1;
4809 } else {
4810 for (i = 0; i < NVIRT_CHAN; i++)
4811 adapter->logdrv_chan[i] = 1;
4812 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)
4813 adapter->logdrv_chan[i] = 0;
4814 adapter->mega_ch_class <<= NVIRT_CHAN;
4815 }
4816
4817 /*
4818 * Do we support random deletion and addition of logical
4819 * drives
4820 */
4821 adapter->read_ldidmap = 0; /* set it after first logdrv
4822 delete cmd */
4823 adapter->support_random_del = mega_support_random_del(adapter);
4824
4825 /* Initialize SCBs */
4826 if (mega_init_scb(adapter))
4827 goto out_free_mbox;
4828
4829 /*
4830 * Reset the pending commands counter
4831 */
4832 atomic_set(&adapter->pend_cmds, 0);
4833
4834 /*
4835 * Reset the adapter quiescent flag
4836 */
4837 atomic_set(&adapter->quiescent, 0);
4838
4839 hba_soft_state[hba_count] = adapter;
4840
4841 /*
4842 * Fill in the structure which needs to be passed back to the
4843 * application when it does an ioctl() for controller related
4844 * information.
4845 */
4846 i = hba_count;
4847
4848 mcontroller[i].base = mega_baseport;
4849 mcontroller[i].irq = irq;
4850 mcontroller[i].numldrv = adapter->numldrv;
4851 mcontroller[i].pcibus = pci_bus;
4852 mcontroller[i].pcidev = id->device;
4853 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);
4854 mcontroller[i].pciid = -1;
4855 mcontroller[i].pcivendor = id->vendor;
4856 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);
4857 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;
4858
4859
4860 /* Set the Mode of addressing to 64 bit if we can */
4861 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {
4862 pci_set_dma_mask(pdev, 0xffffffffffffffffULL);
4863 adapter->has_64bit_addr = 1;
4864 } else {
4865 pci_set_dma_mask(pdev, 0xffffffff);
4866 adapter->has_64bit_addr = 0;
4867 }
4868
0b950672 4869 mutex_init(&adapter->int_mtx);
8d115f84 4870 init_completion(&adapter->int_waitq);
1da177e4
LT		 4871
4872 adapter->this_id = DEFAULT_INITIATOR_ID;
4873 adapter->host->this_id = DEFAULT_INITIATOR_ID;
4874
4875#if MEGA_HAVE_CLUSTERING
4876 /*
4877 * Is cluster support enabled on this controller
4878 * Note: In a cluster the HBAs ( the initiators ) will have
4879 * different target IDs and we cannot assume it to be 7. Call
4880 * to mega_support_cluster() will get the target ids also if
4881 * the cluster support is available
4882 */
4883 adapter->has_cluster = mega_support_cluster(adapter);
4884 if (adapter->has_cluster) {
4885 printk(KERN_NOTICE
4886 "megaraid: Cluster driver, initiator id:%d\n",
4887 adapter->this_id);
4888 }
4889#endif
4890
4891 pci_set_drvdata(pdev, host);
4892
4893 mega_create_proc_entry(hba_count, mega_proc_dir_entry);
4894
4895 error = scsi_add_host(host, &pdev->dev);
4896 if (error)
4897 goto out_free_mbox;
4898
4899 scsi_scan_host(host);
4900 hba_count++;
4901 return 0;
4902
4903 out_free_mbox:
4904 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
4905 adapter->una_mbox64, adapter->una_mbox64_dma);
4906 out_free_irq:
4907 free_irq(adapter->host->irq, adapter);
4908 out_free_scb_list:
4909 kfree(adapter->scb_list);
4910 out_free_cmd_buffer:
4911 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
4912 adapter->mega_buffer, adapter->buf_dma_handle);
4913 out_host_put:
4914 scsi_host_put(host);
4915 out_iounmap:
4916 if (flag & BOARD_MEMMAP)
4917 iounmap((void *)mega_baseport);
4918 out_release_region:
4919 if (flag & BOARD_MEMMAP)
4920 release_mem_region(tbase, 128);
4921 else
4922 release_region(mega_baseport, 16);
4923 out_disable_device:
4924 pci_disable_device(pdev);
4925 out:
4926 return error;
4927}
4928
4929static void
4930__megaraid_shutdown(adapter_t *adapter)
4931{
4932 u_char raw_mbox[sizeof(struct mbox_out)];
4933 mbox_t *mbox = (mbox_t *)raw_mbox;
4934 int i;
4935
4936 /* Flush adapter cache */
4937 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4938 raw_mbox[0] = FLUSH_ADAPTER;
4939
4940 free_irq(adapter->host->irq, adapter);
4941
4942 /* Issue a blocking (interrupts disabled) command to the card */
4943 issue_scb_block(adapter, raw_mbox);
4944
4945 /* Flush disks cache */
4946 memset(&mbox->m_out, 0, sizeof(raw_mbox));
4947 raw_mbox[0] = FLUSH_SYSTEM;
4948
4949 /* Issue a blocking (interrupts disabled) command to the card */
4950 issue_scb_block(adapter, raw_mbox);
4951
4952 if (atomic_read(&adapter->pend_cmds) > 0)
4953 printk(KERN_WARNING "megaraid: pending commands!!\n");
4954
4955 /*
4956 * Have a delibrate delay to make sure all the caches are
4957 * actually flushed.
4958 */
4959 for (i = 0; i <= 10; i++)
4960 mdelay(1000);
4961}
4962
4963static void
4964megaraid_remove_one(struct pci_dev *pdev)
4965{
4966 struct Scsi_Host *host = pci_get_drvdata(pdev);
4967 adapter_t *adapter = (adapter_t *)host->hostdata;
4968 char buf[12] = { 0 };
4969
4970 scsi_remove_host(host);
4971
4972 __megaraid_shutdown(adapter);
4973
4974 /* Free our resources */
4975 if (adapter->flag & BOARD_MEMMAP) {
4976 iounmap((void *)adapter->base);
4977 release_mem_region(adapter->host->base, 128);
4978 } else
4979 release_region(adapter->base, 16);
4980
4981 mega_free_sgl(adapter);
4982
4983#ifdef CONFIG_PROC_FS
4984 if (adapter->controller_proc_dir_entry) {
4985 remove_proc_entry("stat", adapter->controller_proc_dir_entry);
4986 remove_proc_entry("config",
4987 adapter->controller_proc_dir_entry);
4988 remove_proc_entry("mailbox",
4989 adapter->controller_proc_dir_entry);
4990#if MEGA_HAVE_ENH_PROC
4991 remove_proc_entry("rebuild-rate",
4992 adapter->controller_proc_dir_entry);
4993 remove_proc_entry("battery-status",
4994 adapter->controller_proc_dir_entry);
4995
4996 remove_proc_entry("diskdrives-ch0",
4997 adapter->controller_proc_dir_entry);
4998 remove_proc_entry("diskdrives-ch1",
4999 adapter->controller_proc_dir_entry);
5000 remove_proc_entry("diskdrives-ch2",
5001 adapter->controller_proc_dir_entry);
5002 remove_proc_entry("diskdrives-ch3",
5003 adapter->controller_proc_dir_entry);
5004
5005 remove_proc_entry("raiddrives-0-9",
5006 adapter->controller_proc_dir_entry);
5007 remove_proc_entry("raiddrives-10-19",
5008 adapter->controller_proc_dir_entry);
5009 remove_proc_entry("raiddrives-20-29",
5010 adapter->controller_proc_dir_entry);
5011 remove_proc_entry("raiddrives-30-39",
5012 adapter->controller_proc_dir_entry);
5013#endif
5014 sprintf(buf, "hba%d", adapter->host->host_no);
5015 remove_proc_entry(buf, mega_proc_dir_entry);
5016 }
5017#endif
5018
5019 pci_free_consistent(adapter->dev, MEGA_BUFFER_SIZE,
5020 adapter->mega_buffer, adapter->buf_dma_handle);
5021 kfree(adapter->scb_list);
5022 pci_free_consistent(adapter->dev, sizeof(mbox64_t),
5023 adapter->una_mbox64, adapter->una_mbox64_dma);
5024
5025 scsi_host_put(host);
5026 pci_disable_device(pdev);
5027
5028 hba_count--;
5029}
5030
5031static void
d18c3db5 5032megaraid_shutdown(struct pci_dev *pdev)
1da177e4 5033{
d18c3db5 5034 struct Scsi_Host *host = pci_get_drvdata(pdev);
1da177e4
LT		 5035 adapter_t *adapter = (adapter_t *)host->hostdata;
5036
5037 __megaraid_shutdown(adapter);
5038}
5039
5040static struct pci_device_id megaraid_pci_tbl[] = {
1da177e4
LT		 5041 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,
5042 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
5043 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,
5044 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 5045 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,
5046 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1da177e4
LT		 5047 {0,}
5048};
5049MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);
5050
5051static struct pci_driver megaraid_pci_driver = {
3542adcb 5052 .name = "megaraid_legacy",
1da177e4
LT		 5053 .id_table = megaraid_pci_tbl,
5054 .probe = megaraid_probe_one,
5055 .remove = __devexit_p(megaraid_remove_one),
d18c3db5 5056 .shutdown = megaraid_shutdown,
1da177e4
LT		 5057};
5058
5059static int __init megaraid_init(void)
5060{
5061 int error;
5062
5063 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))
5064 max_cmd_per_lun = MAX_CMD_PER_LUN;
5065 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)
5066 max_mbox_busy_wait = MBOX_BUSY_WAIT;
5067
5068#ifdef CONFIG_PROC_FS
5069 mega_proc_dir_entry = proc_mkdir("megaraid", &proc_root);
5070 if (!mega_proc_dir_entry) {
5071 printk(KERN_WARNING
5072 "megaraid: failed to create megaraid root\n");
5073 }
5074#endif
5075 error = pci_module_init(&megaraid_pci_driver);
5076 if (error) {
5077#ifdef CONFIG_PROC_FS
5078 remove_proc_entry("megaraid", &proc_root);
5079#endif
5080 return error;
5081 }
5082
5083 /*
5084 * Register the driver as a character device, for applications
5085 * to access it for ioctls.
5086 * First argument (major) to register_chrdev implies a dynamic
5087 * major number allocation.
5088 */
3492b328 5089 major = register_chrdev(0, "megadev_legacy", &megadev_fops);
1da177e4
LT		 5090 if (!major) {
5091 printk(KERN_WARNING
5092 "megaraid: failed to register char device\n");
5093 }
5094
5095 return 0;
5096}
5097
5098static void __exit megaraid_exit(void)
5099{
5100 /*
5101 * Unregister the character device interface to the driver.
5102 */
3492b328 5103 unregister_chrdev(major, "megadev_legacy");
1da177e4
LT		 5104
5105 pci_unregister_driver(&megaraid_pci_driver);
5106
5107#ifdef CONFIG_PROC_FS
5108 remove_proc_entry("megaraid", &proc_root);
5109#endif
5110}
5111
5112module_init(megaraid_init);
5113module_exit(megaraid_exit);
5114
5115/* vi: set ts=8 sw=8 tw=78: */
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