4630 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 *4 * Linux MegaRAID device driver5 *6 * Copyright (c) 2002 LSI Logic Corporation.7 *8 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.9 * - fixes10 * - speed-ups (list handling fixes, issued_list, optimizations.)11 * - lots of cleanups.12 *13 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>14 * - new-style, hotplug-aware pci probing and scsi registration15 *16 * Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju17 * <Seokmann.Ju@lsil.com>18 *19 * Description: Linux device driver for LSI Logic MegaRAID controller20 *21 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 49322 * 518, 520, 531, 53223 *24 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,25 * and others. Please send updates to the mailing list26 * linux-scsi@vger.kernel.org .27 */28 29#include <linux/mm.h>30#include <linux/fs.h>31#include <linux/blkdev.h>32#include <linux/uaccess.h>33#include <asm/io.h>34#include <linux/completion.h>35#include <linux/delay.h>36#include <linux/proc_fs.h>37#include <linux/seq_file.h>38#include <linux/reboot.h>39#include <linux/module.h>40#include <linux/list.h>41#include <linux/interrupt.h>42#include <linux/pci.h>43#include <linux/init.h>44#include <linux/dma-mapping.h>45#include <linux/mutex.h>46#include <linux/slab.h>47 48#include <scsi/scsi.h>49#include <scsi/scsi_cmnd.h>50#include <scsi/scsi_device.h>51#include <scsi/scsi_eh.h>52#include <scsi/scsi_host.h>53#include <scsi/scsi_tcq.h>54#include <scsi/scsicam.h>55 56#include "megaraid.h"57 58#define MEGARAID_MODULE_VERSION "2.00.4"59 60MODULE_AUTHOR ("sju@lsil.com");61MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver");62MODULE_LICENSE ("GPL");63MODULE_VERSION(MEGARAID_MODULE_VERSION);64 65static DEFINE_MUTEX(megadev_mutex);66static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN;67module_param(max_cmd_per_lun, uint, 0);68MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");69 70static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO;71module_param(max_sectors_per_io, ushort, 0);72MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");73 74 75static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT;76module_param(max_mbox_busy_wait, ushort, 0);77MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");78 79#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20)80#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C)81#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20)82#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C)83 84/*85 * Global variables86 */87 88static int hba_count;89static adapter_t *hba_soft_state[MAX_CONTROLLERS];90static struct proc_dir_entry *mega_proc_dir_entry;91 92/* For controller re-ordering */93static struct mega_hbas mega_hbas[MAX_CONTROLLERS];94 95static long96megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);97 98/*99 * The File Operations structure for the serial/ioctl interface of the driver100 */101static const struct file_operations megadev_fops = {102 .owner = THIS_MODULE,103 .unlocked_ioctl = megadev_unlocked_ioctl,104 .open = megadev_open,105 .llseek = noop_llseek,106};107 108/*109 * Array to structures for storing the information about the controllers. This110 * information is sent to the user level applications, when they do an ioctl111 * for this information.112 */113static struct mcontroller mcontroller[MAX_CONTROLLERS];114 115/* The current driver version */116static u32 driver_ver = 0x02000000;117 118/* major number used by the device for character interface */119static int major;120 121#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)122 123 124/*125 * Debug variable to print some diagnostic messages126 */127static int trace_level;128 129/**130 * mega_setup_mailbox()131 * @adapter: pointer to our soft state132 *133 * Allocates a 8 byte aligned memory for the handshake mailbox.134 */135static int136mega_setup_mailbox(adapter_t *adapter)137{138 unsigned long align;139 140 adapter->una_mbox64 = dma_alloc_coherent(&adapter->dev->dev,141 sizeof(mbox64_t),142 &adapter->una_mbox64_dma,143 GFP_KERNEL);144 145 if( !adapter->una_mbox64 ) return -1;146 147 adapter->mbox = &adapter->una_mbox64->mbox;148 149 adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) &150 (~0UL ^ 0xFUL));151 152 adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8);153 154 align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox);155 156 adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align;157 158 /*159 * Register the mailbox if the controller is an io-mapped controller160 */161 if( adapter->flag & BOARD_IOMAP ) {162 163 outb(adapter->mbox_dma & 0xFF,164 adapter->host->io_port + MBOX_PORT0);165 166 outb((adapter->mbox_dma >> 8) & 0xFF,167 adapter->host->io_port + MBOX_PORT1);168 169 outb((adapter->mbox_dma >> 16) & 0xFF,170 adapter->host->io_port + MBOX_PORT2);171 172 outb((adapter->mbox_dma >> 24) & 0xFF,173 adapter->host->io_port + MBOX_PORT3);174 175 outb(ENABLE_MBOX_BYTE,176 adapter->host->io_port + ENABLE_MBOX_REGION);177 178 irq_ack(adapter);179 180 irq_enable(adapter);181 }182 183 return 0;184}185 186 187/*188 * mega_query_adapter()189 * @adapter - pointer to our soft state190 *191 * Issue the adapter inquiry commands to the controller and find out192 * information and parameter about the devices attached193 */194static int195mega_query_adapter(adapter_t *adapter)196{197 dma_addr_t prod_info_dma_handle;198 mega_inquiry3 *inquiry3;199 struct mbox_out mbox;200 u8 *raw_mbox = (u8 *)&mbox;201 int retval;202 203 /* Initialize adapter inquiry mailbox */204 205 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);206 memset(&mbox, 0, sizeof(mbox));207 208 /*209 * Try to issue Inquiry3 command210 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and211 * update enquiry3 structure212 */213 mbox.xferaddr = (u32)adapter->buf_dma_handle;214 215 inquiry3 = (mega_inquiry3 *)adapter->mega_buffer;216 217 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */218 raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */219 raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */220 221 /* Issue a blocking command to the card */222 if (issue_scb_block(adapter, raw_mbox)) {223 /* the adapter does not support 40ld */224 225 mraid_ext_inquiry *ext_inq;226 mraid_inquiry *inq;227 dma_addr_t dma_handle;228 229 ext_inq = dma_alloc_coherent(&adapter->dev->dev,230 sizeof(mraid_ext_inquiry),231 &dma_handle, GFP_KERNEL);232 233 if( ext_inq == NULL ) return -1;234 235 inq = &ext_inq->raid_inq;236 237 mbox.xferaddr = (u32)dma_handle;238 239 /*issue old 0x04 command to adapter */240 mbox.cmd = MEGA_MBOXCMD_ADPEXTINQ;241 242 issue_scb_block(adapter, raw_mbox);243 244 /*245 * update Enquiry3 and ProductInfo structures with246 * mraid_inquiry structure247 */248 mega_8_to_40ld(inq, inquiry3,249 (mega_product_info *)&adapter->product_info);250 251 dma_free_coherent(&adapter->dev->dev,252 sizeof(mraid_ext_inquiry), ext_inq,253 dma_handle);254 255 } else { /*adapter supports 40ld */256 adapter->flag |= BOARD_40LD;257 258 /*259 * get product_info, which is static information and will be260 * unchanged261 */262 prod_info_dma_handle = dma_map_single(&adapter->dev->dev,263 (void *)&adapter->product_info,264 sizeof(mega_product_info),265 DMA_FROM_DEVICE);266 267 mbox.xferaddr = prod_info_dma_handle;268 269 raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */270 raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */271 272 if ((retval = issue_scb_block(adapter, raw_mbox)))273 dev_warn(&adapter->dev->dev,274 "Product_info cmd failed with error: %d\n",275 retval);276 277 dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle,278 sizeof(mega_product_info), DMA_FROM_DEVICE);279 }280 281 282 /*283 * kernel scans the channels from 0 to <= max_channel284 */285 adapter->host->max_channel =286 adapter->product_info.nchannels + NVIRT_CHAN -1;287 288 adapter->host->max_id = 16; /* max targets per channel */289 290 adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */291 292 adapter->host->cmd_per_lun = max_cmd_per_lun;293 294 adapter->numldrv = inquiry3->num_ldrv;295 296 adapter->max_cmds = adapter->product_info.max_commands;297 298 if(adapter->max_cmds > MAX_COMMANDS)299 adapter->max_cmds = MAX_COMMANDS;300 301 adapter->host->can_queue = adapter->max_cmds - 1;302 303 /*304 * Get the maximum number of scatter-gather elements supported by this305 * firmware306 */307 mega_get_max_sgl(adapter);308 309 adapter->host->sg_tablesize = adapter->sglen;310 311 /* use HP firmware and bios version encoding312 Note: fw_version[0|1] and bios_version[0|1] were originally shifted313 right 8 bits making them zero. This 0 value was hardcoded to fix314 sparse warnings. */315 if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) {316 snprintf(adapter->fw_version, sizeof(adapter->fw_version),317 "%c%d%d.%d%d",318 adapter->product_info.fw_version[2],319 0,320 adapter->product_info.fw_version[1] & 0x0f,321 0,322 adapter->product_info.fw_version[0] & 0x0f);323 snprintf(adapter->bios_version, sizeof(adapter->fw_version),324 "%c%d%d.%d%d",325 adapter->product_info.bios_version[2],326 0,327 adapter->product_info.bios_version[1] & 0x0f,328 0,329 adapter->product_info.bios_version[0] & 0x0f);330 } else {331 memcpy(adapter->fw_version,332 (char *)adapter->product_info.fw_version, 4);333 adapter->fw_version[4] = 0;334 335 memcpy(adapter->bios_version,336 (char *)adapter->product_info.bios_version, 4);337 338 adapter->bios_version[4] = 0;339 }340 341 dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n",342 adapter->fw_version, adapter->bios_version, adapter->numldrv);343 344 /*345 * Do we support extended (>10 bytes) cdbs346 */347 adapter->support_ext_cdb = mega_support_ext_cdb(adapter);348 if (adapter->support_ext_cdb)349 dev_notice(&adapter->dev->dev, "supports extended CDBs\n");350 351 352 return 0;353}354 355/**356 * mega_runpendq()357 * @adapter: pointer to our soft state358 *359 * Runs through the list of pending requests.360 */361static inline void362mega_runpendq(adapter_t *adapter)363{364 if(!list_empty(&adapter->pending_list))365 __mega_runpendq(adapter);366}367 368/*369 * megaraid_queue()370 * @scmd - Issue this scsi command371 * @done - the callback hook into the scsi mid-layer372 *373 * The command queuing entry point for the mid-layer.374 */375static int megaraid_queue_lck(struct scsi_cmnd *scmd)376{377 adapter_t *adapter;378 scb_t *scb;379 int busy=0;380 unsigned long flags;381 382 adapter = (adapter_t *)scmd->device->host->hostdata;383 384 /*385 * Allocate and build a SCB request386 * busy flag will be set if mega_build_cmd() command could not387 * allocate scb. We will return non-zero status in that case.388 * NOTE: scb can be null even though certain commands completed389 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would390 * return 0 in that case.391 */392 393 spin_lock_irqsave(&adapter->lock, flags);394 scb = mega_build_cmd(adapter, scmd, &busy);395 if (!scb)396 goto out;397 398 scb->state |= SCB_PENDQ;399 list_add_tail(&scb->list, &adapter->pending_list);400 401 /*402 * Check if the HBA is in quiescent state, e.g., during a403 * delete logical drive opertion. If it is, don't run404 * the pending_list.405 */406 if (atomic_read(&adapter->quiescent) == 0)407 mega_runpendq(adapter);408 409 busy = 0;410 out:411 spin_unlock_irqrestore(&adapter->lock, flags);412 return busy;413}414 415static DEF_SCSI_QCMD(megaraid_queue)416 417/**418 * mega_allocate_scb()419 * @adapter: pointer to our soft state420 * @cmd: scsi command from the mid-layer421 *422 * Allocate a SCB structure. This is the central structure for controller423 * commands.424 */425static inline scb_t *426mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd)427{428 struct list_head *head = &adapter->free_list;429 scb_t *scb;430 431 /* Unlink command from Free List */432 if( !list_empty(head) ) {433 434 scb = list_entry(head->next, scb_t, list);435 436 list_del_init(head->next);437 438 scb->state = SCB_ACTIVE;439 scb->cmd = cmd;440 scb->dma_type = MEGA_DMA_TYPE_NONE;441 442 return scb;443 }444 445 return NULL;446}447 448/**449 * mega_get_ldrv_num()450 * @adapter: pointer to our soft state451 * @cmd: scsi mid layer command452 * @channel: channel on the controller453 *454 * Calculate the logical drive number based on the information in scsi command455 * and the channel number.456 */457static inline int458mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel)459{460 int tgt;461 int ldrv_num;462 463 tgt = cmd->device->id;464 465 if ( tgt > adapter->this_id )466 tgt--; /* we do not get inquires for initiator id */467 468 ldrv_num = (channel * 15) + tgt;469 470 471 /*472 * If we have a logical drive with boot enabled, project it first473 */474 if( adapter->boot_ldrv_enabled ) {475 if( ldrv_num == 0 ) {476 ldrv_num = adapter->boot_ldrv;477 }478 else {479 if( ldrv_num <= adapter->boot_ldrv ) {480 ldrv_num--;481 }482 }483 }484 485 /*486 * If "delete logical drive" feature is enabled on this controller.487 * Do only if at least one delete logical drive operation was done.488 *489 * Also, after logical drive deletion, instead of logical drive number,490 * the value returned should be 0x80+logical drive id.491 *492 * These is valid only for IO commands.493 */494 495 if (adapter->support_random_del && adapter->read_ldidmap )496 switch (cmd->cmnd[0]) {497 case READ_6:498 case WRITE_6:499 case READ_10:500 case WRITE_10:501 ldrv_num += 0x80;502 }503 504 return ldrv_num;505}506 507/**508 * mega_build_cmd()509 * @adapter: pointer to our soft state510 * @cmd: Prepare using this scsi command511 * @busy: busy flag if no resources512 *513 * Prepares a command and scatter gather list for the controller. This routine514 * also finds out if the commands is intended for a logical drive or a515 * physical device and prepares the controller command accordingly.516 *517 * We also re-order the logical drives and physical devices based on their518 * boot settings.519 */520static scb_t *521mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy)522{523 mega_passthru *pthru;524 scb_t *scb;525 mbox_t *mbox;526 u32 seg;527 char islogical;528 int max_ldrv_num;529 int channel = 0;530 int target = 0;531 int ldrv_num = 0; /* logical drive number */532 533 /*534 * We know what channels our logical drives are on - mega_find_card()535 */536 islogical = adapter->logdrv_chan[cmd->device->channel];537 538 /*539 * The theory: If physical drive is chosen for boot, all the physical540 * devices are exported before the logical drives, otherwise physical541 * devices are pushed after logical drives, in which case - Kernel sees542 * the physical devices on virtual channel which is obviously converted543 * to actual channel on the HBA.544 */545 if( adapter->boot_pdrv_enabled ) {546 if( islogical ) {547 /* logical channel */548 channel = cmd->device->channel -549 adapter->product_info.nchannels;550 }551 else {552 /* this is physical channel */553 channel = cmd->device->channel; 554 target = cmd->device->id;555 556 /*557 * boot from a physical disk, that disk needs to be558 * exposed first IF both the channels are SCSI, then559 * booting from the second channel is not allowed.560 */561 if( target == 0 ) {562 target = adapter->boot_pdrv_tgt;563 }564 else if( target == adapter->boot_pdrv_tgt ) {565 target = 0;566 }567 }568 }569 else {570 if( islogical ) {571 /* this is the logical channel */572 channel = cmd->device->channel; 573 }574 else {575 /* physical channel */576 channel = cmd->device->channel - NVIRT_CHAN; 577 target = cmd->device->id;578 }579 }580 581 582 if(islogical) {583 584 /* have just LUN 0 for each target on virtual channels */585 if (cmd->device->lun) {586 cmd->result = (DID_BAD_TARGET << 16);587 scsi_done(cmd);588 return NULL;589 }590 591 ldrv_num = mega_get_ldrv_num(adapter, cmd, channel);592 593 594 max_ldrv_num = (adapter->flag & BOARD_40LD) ?595 MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD;596 597 /*598 * max_ldrv_num increases by 0x80 if some logical drive was599 * deleted.600 */601 if(adapter->read_ldidmap)602 max_ldrv_num += 0x80;603 604 if(ldrv_num > max_ldrv_num ) {605 cmd->result = (DID_BAD_TARGET << 16);606 scsi_done(cmd);607 return NULL;608 }609 610 }611 else {612 if( cmd->device->lun > 7) {613 /*614 * Do not support lun >7 for physically accessed615 * devices616 */617 cmd->result = (DID_BAD_TARGET << 16);618 scsi_done(cmd);619 return NULL;620 }621 }622 623 /*624 *625 * Logical drive commands626 *627 */628 if(islogical) {629 switch (cmd->cmnd[0]) {630 case TEST_UNIT_READY:631#if MEGA_HAVE_CLUSTERING632 /*633 * Do we support clustering and is the support enabled634 * If no, return success always635 */636 if( !adapter->has_cluster ) {637 cmd->result = (DID_OK << 16);638 scsi_done(cmd);639 return NULL;640 }641 642 if(!(scb = mega_allocate_scb(adapter, cmd))) {643 *busy = 1;644 return NULL;645 }646 647 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;648 scb->raw_mbox[2] = MEGA_RESERVATION_STATUS;649 scb->raw_mbox[3] = ldrv_num;650 651 scb->dma_direction = DMA_NONE;652 653 return scb;654#else655 cmd->result = (DID_OK << 16);656 scsi_done(cmd);657 return NULL;658#endif659 660 case MODE_SENSE: {661 char *buf;662 struct scatterlist *sg;663 664 sg = scsi_sglist(cmd);665 buf = kmap_atomic(sg_page(sg)) + sg->offset;666 667 memset(buf, 0, cmd->cmnd[4]);668 kunmap_atomic(buf - sg->offset);669 670 cmd->result = (DID_OK << 16);671 scsi_done(cmd);672 return NULL;673 }674 675 case READ_CAPACITY:676 case INQUIRY:677 678 if(!(adapter->flag & (1L << cmd->device->channel))) {679 680 dev_notice(&adapter->dev->dev,681 "scsi%d: scanning scsi channel %d "682 "for logical drives\n",683 adapter->host->host_no,684 cmd->device->channel);685 686 adapter->flag |= (1L << cmd->device->channel);687 }688 689 /* Allocate a SCB and initialize passthru */690 if(!(scb = mega_allocate_scb(adapter, cmd))) {691 *busy = 1;692 return NULL;693 }694 pthru = scb->pthru;695 696 mbox = (mbox_t *)scb->raw_mbox;697 memset(mbox, 0, sizeof(scb->raw_mbox));698 memset(pthru, 0, sizeof(mega_passthru));699 700 pthru->timeout = 0;701 pthru->ars = 1;702 pthru->reqsenselen = 14;703 pthru->islogical = 1;704 pthru->logdrv = ldrv_num;705 pthru->cdblen = cmd->cmd_len;706 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);707 708 if( adapter->has_64bit_addr ) {709 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;710 }711 else {712 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;713 }714 715 scb->dma_direction = DMA_FROM_DEVICE;716 717 pthru->numsgelements = mega_build_sglist(adapter, scb,718 &pthru->dataxferaddr, &pthru->dataxferlen);719 720 mbox->m_out.xferaddr = scb->pthru_dma_addr;721 722 return scb;723 724 case READ_6:725 case WRITE_6:726 case READ_10:727 case WRITE_10:728 case READ_12:729 case WRITE_12:730 731 /* Allocate a SCB and initialize mailbox */732 if(!(scb = mega_allocate_scb(adapter, cmd))) {733 *busy = 1;734 return NULL;735 }736 mbox = (mbox_t *)scb->raw_mbox;737 738 memset(mbox, 0, sizeof(scb->raw_mbox));739 mbox->m_out.logdrv = ldrv_num;740 741 /*742 * A little hack: 2nd bit is zero for all scsi read743 * commands and is set for all scsi write commands744 */745 if( adapter->has_64bit_addr ) {746 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?747 MEGA_MBOXCMD_LWRITE64:748 MEGA_MBOXCMD_LREAD64 ;749 }750 else {751 mbox->m_out.cmd = (*cmd->cmnd & 0x02) ?752 MEGA_MBOXCMD_LWRITE:753 MEGA_MBOXCMD_LREAD ;754 }755 756 /*757 * 6-byte READ(0x08) or WRITE(0x0A) cdb758 */759 if( cmd->cmd_len == 6 ) {760 mbox->m_out.numsectors = (u32) cmd->cmnd[4];761 mbox->m_out.lba =762 ((u32)cmd->cmnd[1] << 16) |763 ((u32)cmd->cmnd[2] << 8) |764 (u32)cmd->cmnd[3];765 766 mbox->m_out.lba &= 0x1FFFFF;767 768#if MEGA_HAVE_STATS769 /*770 * Take modulo 0x80, since the logical drive771 * number increases by 0x80 when a logical772 * drive was deleted773 */774 if (*cmd->cmnd == READ_6) {775 adapter->nreads[ldrv_num%0x80]++;776 adapter->nreadblocks[ldrv_num%0x80] +=777 mbox->m_out.numsectors;778 } else {779 adapter->nwrites[ldrv_num%0x80]++;780 adapter->nwriteblocks[ldrv_num%0x80] +=781 mbox->m_out.numsectors;782 }783#endif784 }785 786 /*787 * 10-byte READ(0x28) or WRITE(0x2A) cdb788 */789 if( cmd->cmd_len == 10 ) {790 mbox->m_out.numsectors =791 (u32)cmd->cmnd[8] |792 ((u32)cmd->cmnd[7] << 8);793 mbox->m_out.lba =794 ((u32)cmd->cmnd[2] << 24) |795 ((u32)cmd->cmnd[3] << 16) |796 ((u32)cmd->cmnd[4] << 8) |797 (u32)cmd->cmnd[5];798 799#if MEGA_HAVE_STATS800 if (*cmd->cmnd == READ_10) {801 adapter->nreads[ldrv_num%0x80]++;802 adapter->nreadblocks[ldrv_num%0x80] +=803 mbox->m_out.numsectors;804 } else {805 adapter->nwrites[ldrv_num%0x80]++;806 adapter->nwriteblocks[ldrv_num%0x80] +=807 mbox->m_out.numsectors;808 }809#endif810 }811 812 /*813 * 12-byte READ(0xA8) or WRITE(0xAA) cdb814 */815 if( cmd->cmd_len == 12 ) {816 mbox->m_out.lba =817 ((u32)cmd->cmnd[2] << 24) |818 ((u32)cmd->cmnd[3] << 16) |819 ((u32)cmd->cmnd[4] << 8) |820 (u32)cmd->cmnd[5];821 822 mbox->m_out.numsectors =823 ((u32)cmd->cmnd[6] << 24) |824 ((u32)cmd->cmnd[7] << 16) |825 ((u32)cmd->cmnd[8] << 8) |826 (u32)cmd->cmnd[9];827 828#if MEGA_HAVE_STATS829 if (*cmd->cmnd == READ_12) {830 adapter->nreads[ldrv_num%0x80]++;831 adapter->nreadblocks[ldrv_num%0x80] +=832 mbox->m_out.numsectors;833 } else {834 adapter->nwrites[ldrv_num%0x80]++;835 adapter->nwriteblocks[ldrv_num%0x80] +=836 mbox->m_out.numsectors;837 }838#endif839 }840 841 /*842 * If it is a read command843 */844 if( (*cmd->cmnd & 0x0F) == 0x08 ) {845 scb->dma_direction = DMA_FROM_DEVICE;846 }847 else {848 scb->dma_direction = DMA_TO_DEVICE;849 }850 851 /* Calculate Scatter-Gather info */852 mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,853 (u32 *)&mbox->m_out.xferaddr, &seg);854 855 return scb;856 857#if MEGA_HAVE_CLUSTERING858 case RESERVE:859 case RELEASE:860 861 /*862 * Do we support clustering and is the support enabled863 */864 if( ! adapter->has_cluster ) {865 866 cmd->result = (DID_BAD_TARGET << 16);867 scsi_done(cmd);868 return NULL;869 }870 871 /* Allocate a SCB and initialize mailbox */872 if(!(scb = mega_allocate_scb(adapter, cmd))) {873 *busy = 1;874 return NULL;875 }876 877 scb->raw_mbox[0] = MEGA_CLUSTER_CMD;878 scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ?879 MEGA_RESERVE_LD : MEGA_RELEASE_LD;880 881 scb->raw_mbox[3] = ldrv_num;882 883 scb->dma_direction = DMA_NONE;884 885 return scb;886#endif887 888 default:889 cmd->result = (DID_BAD_TARGET << 16);890 scsi_done(cmd);891 return NULL;892 }893 }894 895 /*896 * Passthru drive commands897 */898 else {899 /* Allocate a SCB and initialize passthru */900 if(!(scb = mega_allocate_scb(adapter, cmd))) {901 *busy = 1;902 return NULL;903 }904 905 mbox = (mbox_t *)scb->raw_mbox;906 memset(mbox, 0, sizeof(scb->raw_mbox));907 908 if( adapter->support_ext_cdb ) {909 910 mega_prepare_extpassthru(adapter, scb, cmd,911 channel, target);912 913 mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU;914 915 mbox->m_out.xferaddr = scb->epthru_dma_addr;916 917 }918 else {919 920 pthru = mega_prepare_passthru(adapter, scb, cmd,921 channel, target);922 923 /* Initialize mailbox */924 if( adapter->has_64bit_addr ) {925 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64;926 }927 else {928 mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU;929 }930 931 mbox->m_out.xferaddr = scb->pthru_dma_addr;932 933 }934 return scb;935 }936 return NULL;937}938 939 940/**941 * mega_prepare_passthru()942 * @adapter: pointer to our soft state943 * @scb: our scsi control block944 * @cmd: scsi command from the mid-layer945 * @channel: actual channel on the controller946 * @target: actual id on the controller.947 *948 * prepare a command for the scsi physical devices.949 */950static mega_passthru *951mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd,952 int channel, int target)953{954 mega_passthru *pthru;955 956 pthru = scb->pthru;957 memset(pthru, 0, sizeof (mega_passthru));958 959 /* 0=6sec/1=60sec/2=10min/3=3hrs */960 pthru->timeout = 2;961 962 pthru->ars = 1;963 pthru->reqsenselen = 14;964 pthru->islogical = 0;965 966 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;967 968 pthru->target = (adapter->flag & BOARD_40LD) ?969 (channel << 4) | target : target;970 971 pthru->cdblen = cmd->cmd_len;972 pthru->logdrv = cmd->device->lun;973 974 memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len);975 976 /* Not sure about the direction */977 scb->dma_direction = DMA_BIDIRECTIONAL;978 979 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */980 switch (cmd->cmnd[0]) {981 case INQUIRY:982 case READ_CAPACITY:983 if(!(adapter->flag & (1L << cmd->device->channel))) {984 985 dev_notice(&adapter->dev->dev,986 "scsi%d: scanning scsi channel %d [P%d] "987 "for physical devices\n",988 adapter->host->host_no,989 cmd->device->channel, channel);990 991 adapter->flag |= (1L << cmd->device->channel);992 }993 fallthrough;994 default:995 pthru->numsgelements = mega_build_sglist(adapter, scb,996 &pthru->dataxferaddr, &pthru->dataxferlen);997 break;998 }999 return pthru;1000}1001 1002 1003/**1004 * mega_prepare_extpassthru()1005 * @adapter: pointer to our soft state1006 * @scb: our scsi control block1007 * @cmd: scsi command from the mid-layer1008 * @channel: actual channel on the controller1009 * @target: actual id on the controller.1010 *1011 * prepare a command for the scsi physical devices. This rountine prepares1012 * commands for devices which can take extended CDBs (>10 bytes)1013 */1014static mega_ext_passthru *1015mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb,1016 struct scsi_cmnd *cmd,1017 int channel, int target)1018{1019 mega_ext_passthru *epthru;1020 1021 epthru = scb->epthru;1022 memset(epthru, 0, sizeof(mega_ext_passthru));1023 1024 /* 0=6sec/1=60sec/2=10min/3=3hrs */1025 epthru->timeout = 2;1026 1027 epthru->ars = 1;1028 epthru->reqsenselen = 14;1029 epthru->islogical = 0;1030 1031 epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel;1032 epthru->target = (adapter->flag & BOARD_40LD) ?1033 (channel << 4) | target : target;1034 1035 epthru->cdblen = cmd->cmd_len;1036 epthru->logdrv = cmd->device->lun;1037 1038 memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len);1039 1040 /* Not sure about the direction */1041 scb->dma_direction = DMA_BIDIRECTIONAL;1042 1043 switch(cmd->cmnd[0]) {1044 case INQUIRY:1045 case READ_CAPACITY:1046 if(!(adapter->flag & (1L << cmd->device->channel))) {1047 1048 dev_notice(&adapter->dev->dev,1049 "scsi%d: scanning scsi channel %d [P%d] "1050 "for physical devices\n",1051 adapter->host->host_no,1052 cmd->device->channel, channel);1053 1054 adapter->flag |= (1L << cmd->device->channel);1055 }1056 fallthrough;1057 default:1058 epthru->numsgelements = mega_build_sglist(adapter, scb,1059 &epthru->dataxferaddr, &epthru->dataxferlen);1060 break;1061 }1062 1063 return epthru;1064}1065 1066static void1067__mega_runpendq(adapter_t *adapter)1068{1069 scb_t *scb;1070 struct list_head *pos, *next;1071 1072 /* Issue any pending commands to the card */1073 list_for_each_safe(pos, next, &adapter->pending_list) {1074 1075 scb = list_entry(pos, scb_t, list);1076 1077 if( !(scb->state & SCB_ISSUED) ) {1078 1079 if( issue_scb(adapter, scb) != 0 )1080 return;1081 }1082 }1083 1084 return;1085}1086 1087 1088/**1089 * issue_scb()1090 * @adapter: pointer to our soft state1091 * @scb: scsi control block1092 *1093 * Post a command to the card if the mailbox is available, otherwise return1094 * busy. We also take the scb from the pending list if the mailbox is1095 * available.1096 */1097static int1098issue_scb(adapter_t *adapter, scb_t *scb)1099{1100 volatile mbox64_t *mbox64 = adapter->mbox64;1101 volatile mbox_t *mbox = adapter->mbox;1102 unsigned int i = 0;1103 1104 if(unlikely(mbox->m_in.busy)) {1105 do {1106 udelay(1);1107 i++;1108 } while( mbox->m_in.busy && (i < max_mbox_busy_wait) );1109 1110 if(mbox->m_in.busy) return -1;1111 }1112 1113 /* Copy mailbox data into host structure */1114 memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, 1115 sizeof(struct mbox_out));1116 1117 mbox->m_out.cmdid = scb->idx; /* Set cmdid */1118 mbox->m_in.busy = 1; /* Set busy */1119 1120 1121 /*1122 * Increment the pending queue counter1123 */1124 atomic_inc(&adapter->pend_cmds);1125 1126 switch (mbox->m_out.cmd) {1127 case MEGA_MBOXCMD_LREAD64:1128 case MEGA_MBOXCMD_LWRITE64:1129 case MEGA_MBOXCMD_PASSTHRU64:1130 case MEGA_MBOXCMD_EXTPTHRU:1131 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;1132 mbox64->xfer_segment_hi = 0;1133 mbox->m_out.xferaddr = 0xFFFFFFFF;1134 break;1135 default:1136 mbox64->xfer_segment_lo = 0;1137 mbox64->xfer_segment_hi = 0;1138 }1139 1140 /*1141 * post the command1142 */1143 scb->state |= SCB_ISSUED;1144 1145 if( likely(adapter->flag & BOARD_MEMMAP) ) {1146 mbox->m_in.poll = 0;1147 mbox->m_in.ack = 0;1148 WRINDOOR(adapter, adapter->mbox_dma | 0x1);1149 }1150 else {1151 irq_enable(adapter);1152 issue_command(adapter);1153 }1154 1155 return 0;1156}1157 1158/*1159 * Wait until the controller's mailbox is available1160 */1161static inline int1162mega_busywait_mbox (adapter_t *adapter)1163{1164 if (adapter->mbox->m_in.busy)1165 return __mega_busywait_mbox(adapter);1166 return 0;1167}1168 1169/**1170 * issue_scb_block()1171 * @adapter: pointer to our soft state1172 * @raw_mbox: the mailbox1173 *1174 * Issue a scb in synchronous and non-interrupt mode1175 */1176static int1177issue_scb_block(adapter_t *adapter, u_char *raw_mbox)1178{1179 volatile mbox64_t *mbox64 = adapter->mbox64;1180 volatile mbox_t *mbox = adapter->mbox;1181 u8 byte;1182 1183 /* Wait until mailbox is free */1184 if(mega_busywait_mbox (adapter))1185 goto bug_blocked_mailbox;1186 1187 /* Copy mailbox data into host structure */1188 memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out));1189 mbox->m_out.cmdid = 0xFE;1190 mbox->m_in.busy = 1;1191 1192 switch (raw_mbox[0]) {1193 case MEGA_MBOXCMD_LREAD64:1194 case MEGA_MBOXCMD_LWRITE64:1195 case MEGA_MBOXCMD_PASSTHRU64:1196 case MEGA_MBOXCMD_EXTPTHRU:1197 mbox64->xfer_segment_lo = mbox->m_out.xferaddr;1198 mbox64->xfer_segment_hi = 0;1199 mbox->m_out.xferaddr = 0xFFFFFFFF;1200 break;1201 default:1202 mbox64->xfer_segment_lo = 0;1203 mbox64->xfer_segment_hi = 0;1204 }1205 1206 if( likely(adapter->flag & BOARD_MEMMAP) ) {1207 mbox->m_in.poll = 0;1208 mbox->m_in.ack = 0;1209 mbox->m_in.numstatus = 0xFF;1210 mbox->m_in.status = 0xFF;1211 WRINDOOR(adapter, adapter->mbox_dma | 0x1);1212 1213 while((volatile u8)mbox->m_in.numstatus == 0xFF)1214 cpu_relax();1215 1216 mbox->m_in.numstatus = 0xFF;1217 1218 while( (volatile u8)mbox->m_in.poll != 0x77 )1219 cpu_relax();1220 1221 mbox->m_in.poll = 0;1222 mbox->m_in.ack = 0x77;1223 1224 WRINDOOR(adapter, adapter->mbox_dma | 0x2);1225 1226 while(RDINDOOR(adapter) & 0x2)1227 cpu_relax();1228 }1229 else {1230 irq_disable(adapter);1231 issue_command(adapter);1232 1233 while (!((byte = irq_state(adapter)) & INTR_VALID))1234 cpu_relax();1235 1236 set_irq_state(adapter, byte);1237 irq_enable(adapter);1238 irq_ack(adapter);1239 }1240 1241 return mbox->m_in.status;1242 1243bug_blocked_mailbox:1244 dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n");1245 udelay (1000);1246 return -1;1247}1248 1249 1250/**1251 * megaraid_isr_iomapped()1252 * @irq: irq1253 * @devp: pointer to our soft state1254 *1255 * Interrupt service routine for io-mapped controllers.1256 * Find out if our device is interrupting. If yes, acknowledge the interrupt1257 * and service the completed commands.1258 */1259static irqreturn_t1260megaraid_isr_iomapped(int irq, void *devp)1261{1262 adapter_t *adapter = devp;1263 unsigned long flags;1264 u8 status;1265 u8 nstatus;1266 u8 completed[MAX_FIRMWARE_STATUS];1267 u8 byte;1268 int handled = 0;1269 1270 1271 /*1272 * loop till F/W has more commands for us to complete.1273 */1274 spin_lock_irqsave(&adapter->lock, flags);1275 1276 do {1277 /* Check if a valid interrupt is pending */1278 byte = irq_state(adapter);1279 if( (byte & VALID_INTR_BYTE) == 0 ) {1280 /*1281 * No more pending commands1282 */1283 goto out_unlock;1284 }1285 set_irq_state(adapter, byte);1286 1287 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)1288 == 0xFF)1289 cpu_relax();1290 adapter->mbox->m_in.numstatus = 0xFF;1291 1292 status = adapter->mbox->m_in.status;1293 1294 /*1295 * decrement the pending queue counter1296 */1297 atomic_sub(nstatus, &adapter->pend_cmds);1298 1299 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1300 nstatus);1301 1302 /* Acknowledge interrupt */1303 irq_ack(adapter);1304 1305 mega_cmd_done(adapter, completed, nstatus, status);1306 1307 mega_rundoneq(adapter);1308 1309 handled = 1;1310 1311 /* Loop through any pending requests */1312 if(atomic_read(&adapter->quiescent) == 0) {1313 mega_runpendq(adapter);1314 }1315 1316 } while(1);1317 1318 out_unlock:1319 1320 spin_unlock_irqrestore(&adapter->lock, flags);1321 1322 return IRQ_RETVAL(handled);1323}1324 1325 1326/**1327 * megaraid_isr_memmapped()1328 * @irq: irq1329 * @devp: pointer to our soft state1330 *1331 * Interrupt service routine for memory-mapped controllers.1332 * Find out if our device is interrupting. If yes, acknowledge the interrupt1333 * and service the completed commands.1334 */1335static irqreturn_t1336megaraid_isr_memmapped(int irq, void *devp)1337{1338 adapter_t *adapter = devp;1339 unsigned long flags;1340 u8 status;1341 u32 dword = 0;1342 u8 nstatus;1343 u8 completed[MAX_FIRMWARE_STATUS];1344 int handled = 0;1345 1346 1347 /*1348 * loop till F/W has more commands for us to complete.1349 */1350 spin_lock_irqsave(&adapter->lock, flags);1351 1352 do {1353 /* Check if a valid interrupt is pending */1354 dword = RDOUTDOOR(adapter);1355 if(dword != 0x10001234) {1356 /*1357 * No more pending commands1358 */1359 goto out_unlock;1360 }1361 WROUTDOOR(adapter, 0x10001234);1362 1363 while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus)1364 == 0xFF) {1365 cpu_relax();1366 }1367 adapter->mbox->m_in.numstatus = 0xFF;1368 1369 status = adapter->mbox->m_in.status;1370 1371 /*1372 * decrement the pending queue counter1373 */1374 atomic_sub(nstatus, &adapter->pend_cmds);1375 1376 memcpy(completed, (void *)adapter->mbox->m_in.completed, 1377 nstatus);1378 1379 /* Acknowledge interrupt */1380 WRINDOOR(adapter, 0x2);1381 1382 handled = 1;1383 1384 while( RDINDOOR(adapter) & 0x02 )1385 cpu_relax();1386 1387 mega_cmd_done(adapter, completed, nstatus, status);1388 1389 mega_rundoneq(adapter);1390 1391 /* Loop through any pending requests */1392 if(atomic_read(&adapter->quiescent) == 0) {1393 mega_runpendq(adapter);1394 }1395 1396 } while(1);1397 1398 out_unlock:1399 1400 spin_unlock_irqrestore(&adapter->lock, flags);1401 1402 return IRQ_RETVAL(handled);1403}1404/**1405 * mega_cmd_done()1406 * @adapter: pointer to our soft state1407 * @completed: array of ids of completed commands1408 * @nstatus: number of completed commands1409 * @status: status of the last command completed1410 *1411 * Complete the commands and call the scsi mid-layer callback hooks.1412 */1413static void1414mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)1415{1416 mega_ext_passthru *epthru = NULL;1417 struct scatterlist *sgl;1418 struct scsi_cmnd *cmd = NULL;1419 mega_passthru *pthru = NULL;1420 mbox_t *mbox = NULL;1421 u8 c;1422 scb_t *scb;1423 int islogical;1424 int cmdid;1425 int i;1426 1427 /*1428 * for all the commands completed, call the mid-layer callback routine1429 * and free the scb.1430 */1431 for( i = 0; i < nstatus; i++ ) {1432 1433 cmdid = completed[i];1434 1435 /*1436 * Only free SCBs for the commands coming down from the1437 * mid-layer, not for which were issued internally1438 *1439 * For internal command, restore the status returned by the1440 * firmware so that user can interpret it.1441 */1442 if (cmdid == CMDID_INT_CMDS) {1443 scb = &adapter->int_scb;1444 cmd = scb->cmd;1445 1446 list_del_init(&scb->list);1447 scb->state = SCB_FREE;1448 1449 adapter->int_status = status;1450 complete(&adapter->int_waitq);1451 } else {1452 scb = &adapter->scb_list[cmdid];1453 1454 /*1455 * Make sure f/w has completed a valid command1456 */1457 if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) {1458 dev_crit(&adapter->dev->dev, "invalid command "1459 "Id %d, scb->state:%x, scsi cmd:%p\n",1460 cmdid, scb->state, scb->cmd);1461 1462 continue;1463 }1464 1465 /*1466 * Was a abort issued for this command1467 */1468 if( scb->state & SCB_ABORT ) {1469 1470 dev_warn(&adapter->dev->dev,1471 "aborted cmd [%x] complete\n",1472 scb->idx);1473 1474 scb->cmd->result = (DID_ABORT << 16);1475 1476 list_add_tail(SCSI_LIST(scb->cmd),1477 &adapter->completed_list);1478 1479 mega_free_scb(adapter, scb);1480 1481 continue;1482 }1483 1484 /*1485 * Was a reset issued for this command1486 */1487 if( scb->state & SCB_RESET ) {1488 1489 dev_warn(&adapter->dev->dev,1490 "reset cmd [%x] complete\n",1491 scb->idx);1492 1493 scb->cmd->result = (DID_RESET << 16);1494 1495 list_add_tail(SCSI_LIST(scb->cmd),1496 &adapter->completed_list);1497 1498 mega_free_scb (adapter, scb);1499 1500 continue;1501 }1502 1503 cmd = scb->cmd;1504 pthru = scb->pthru;1505 epthru = scb->epthru;1506 mbox = (mbox_t *)scb->raw_mbox;1507 1508#if MEGA_HAVE_STATS1509 {1510 1511 int logdrv = mbox->m_out.logdrv;1512 1513 islogical = adapter->logdrv_chan[cmd->channel];1514 /*1515 * Maintain an error counter for the logical drive.1516 * Some application like SNMP agent need such1517 * statistics1518 */1519 if( status && islogical && (cmd->cmnd[0] == READ_6 ||1520 cmd->cmnd[0] == READ_10 ||1521 cmd->cmnd[0] == READ_12)) {1522 /*1523 * Logical drive number increases by 0x80 when1524 * a logical drive is deleted1525 */1526 adapter->rd_errors[logdrv%0x80]++;1527 }1528 1529 if( status && islogical && (cmd->cmnd[0] == WRITE_6 ||1530 cmd->cmnd[0] == WRITE_10 ||1531 cmd->cmnd[0] == WRITE_12)) {1532 /*1533 * Logical drive number increases by 0x80 when1534 * a logical drive is deleted1535 */1536 adapter->wr_errors[logdrv%0x80]++;1537 }1538 1539 }1540#endif1541 }1542 1543 /*1544 * Do not return the presence of hard disk on the channel so,1545 * inquiry sent, and returned data==hard disk or removable1546 * hard disk and not logical, request should return failure! -1547 * PJ1548 */1549 islogical = adapter->logdrv_chan[cmd->device->channel];1550 if( cmd->cmnd[0] == INQUIRY && !islogical ) {1551 1552 sgl = scsi_sglist(cmd);1553 if( sg_page(sgl) ) {1554 c = *(unsigned char *) sg_virt(&sgl[0]);1555 } else {1556 dev_warn(&adapter->dev->dev, "invalid sg\n");1557 c = 0;1558 }1559 1560 if(IS_RAID_CH(adapter, cmd->device->channel) &&1561 ((c & 0x1F ) == TYPE_DISK)) {1562 status = 0xF0;1563 }1564 }1565 1566 /* clear result; otherwise, success returns corrupt value */1567 cmd->result = 0;1568 1569 /* Convert MegaRAID status to Linux error code */1570 switch (status) {1571 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */1572 cmd->result |= (DID_OK << 16);1573 break;1574 1575 case 0x02: /* ERROR_ABORTED, i.e.1576 SCSI_STATUS_CHECK_CONDITION */1577 1578 /* set sense_buffer and result fields */1579 if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU ||1580 mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) {1581 1582 memcpy(cmd->sense_buffer, pthru->reqsensearea,1583 14);1584 1585 cmd->result = SAM_STAT_CHECK_CONDITION;1586 }1587 else {1588 if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) {1589 1590 memcpy(cmd->sense_buffer,1591 epthru->reqsensearea, 14);1592 1593 cmd->result = SAM_STAT_CHECK_CONDITION;1594 } else1595 scsi_build_sense(cmd, 0,1596 ABORTED_COMMAND, 0, 0);1597 }1598 break;1599 1600 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.1601 SCSI_STATUS_BUSY */1602 cmd->result |= (DID_BUS_BUSY << 16) | status;1603 break;1604 1605 default:1606#if MEGA_HAVE_CLUSTERING1607 /*1608 * If TEST_UNIT_READY fails, we know1609 * MEGA_RESERVATION_STATUS failed1610 */1611 if( cmd->cmnd[0] == TEST_UNIT_READY ) {1612 cmd->result |= (DID_ERROR << 16) |1613 SAM_STAT_RESERVATION_CONFLICT;1614 }1615 else1616 /*1617 * Error code returned is 1 if Reserve or Release1618 * failed or the input parameter is invalid1619 */1620 if( status == 1 &&1621 (cmd->cmnd[0] == RESERVE ||1622 cmd->cmnd[0] == RELEASE) ) {1623 1624 cmd->result |= (DID_ERROR << 16) |1625 SAM_STAT_RESERVATION_CONFLICT;1626 }1627 else1628#endif1629 cmd->result |= (DID_BAD_TARGET << 16)|status;1630 }1631 1632 mega_free_scb(adapter, scb);1633 1634 /* Add Scsi_Command to end of completed queue */1635 list_add_tail(SCSI_LIST(cmd), &adapter->completed_list);1636 }1637}1638 1639 1640/*1641 * mega_runpendq()1642 *1643 * Run through the list of completed requests and finish it1644 */1645static void1646mega_rundoneq (adapter_t *adapter)1647{1648 struct megaraid_cmd_priv *cmd_priv;1649 1650 list_for_each_entry(cmd_priv, &adapter->completed_list, entry)1651 scsi_done(megaraid_to_scsi_cmd(cmd_priv));1652 1653 INIT_LIST_HEAD(&adapter->completed_list);1654}1655 1656 1657/*1658 * Free a SCB structure1659 * Note: We assume the scsi commands associated with this scb is not free yet.1660 */1661static void1662mega_free_scb(adapter_t *adapter, scb_t *scb)1663{1664 switch( scb->dma_type ) {1665 1666 case MEGA_DMA_TYPE_NONE:1667 break;1668 1669 case MEGA_SGLIST:1670 scsi_dma_unmap(scb->cmd);1671 break;1672 default:1673 break;1674 }1675 1676 /*1677 * Remove from the pending list1678 */1679 list_del_init(&scb->list);1680 1681 /* Link the scb back into free list */1682 scb->state = SCB_FREE;1683 scb->cmd = NULL;1684 1685 list_add(&scb->list, &adapter->free_list);1686}1687 1688 1689static int1690__mega_busywait_mbox (adapter_t *adapter)1691{1692 volatile mbox_t *mbox = adapter->mbox;1693 long counter;1694 1695 for (counter = 0; counter < 10000; counter++) {1696 if (!mbox->m_in.busy)1697 return 0;1698 udelay(100);1699 cond_resched();1700 }1701 return -1; /* give up after 1 second */1702}1703 1704/*1705 * Copies data to SGLIST1706 * Note: For 64 bit cards, we need a minimum of one SG element for read/write1707 */1708static int1709mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)1710{1711 struct scatterlist *sg;1712 struct scsi_cmnd *cmd;1713 int sgcnt;1714 int idx;1715 1716 cmd = scb->cmd;1717 1718 /*1719 * Copy Scatter-Gather list info into controller structure.1720 *1721 * The number of sg elements returned must not exceed our limit1722 */1723 sgcnt = scsi_dma_map(cmd);1724 1725 scb->dma_type = MEGA_SGLIST;1726 1727 BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);1728 1729 *len = 0;1730 1731 if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {1732 sg = scsi_sglist(cmd);1733 scb->dma_h_bulkdata = sg_dma_address(sg);1734 *buf = (u32)scb->dma_h_bulkdata;1735 *len = sg_dma_len(sg);1736 return 0;1737 }1738 1739 scsi_for_each_sg(cmd, sg, sgcnt, idx) {1740 if (adapter->has_64bit_addr) {1741 scb->sgl64[idx].address = sg_dma_address(sg);1742 *len += scb->sgl64[idx].length = sg_dma_len(sg);1743 } else {1744 scb->sgl[idx].address = sg_dma_address(sg);1745 *len += scb->sgl[idx].length = sg_dma_len(sg);1746 }1747 }1748 1749 /* Reset pointer and length fields */1750 *buf = scb->sgl_dma_addr;1751 1752 /* Return count of SG requests */1753 return sgcnt;1754}1755 1756 1757/*1758 * mega_8_to_40ld()1759 *1760 * takes all info in AdapterInquiry structure and puts it into ProductInfo and1761 * Enquiry3 structures for later use1762 */1763static void1764mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3,1765 mega_product_info *product_info)1766{1767 int i;1768 1769 product_info->max_commands = inquiry->adapter_info.max_commands;1770 enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate;1771 product_info->nchannels = inquiry->adapter_info.nchannels;1772 1773 for (i = 0; i < 4; i++) {1774 product_info->fw_version[i] =1775 inquiry->adapter_info.fw_version[i];1776 1777 product_info->bios_version[i] =1778 inquiry->adapter_info.bios_version[i];1779 }1780 enquiry3->cache_flush_interval =1781 inquiry->adapter_info.cache_flush_interval;1782 1783 product_info->dram_size = inquiry->adapter_info.dram_size;1784 1785 enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv;1786 1787 for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) {1788 enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i];1789 enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i];1790 enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i];1791 }1792 1793 for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++)1794 enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i];1795}1796 1797static inline void1798mega_free_sgl(adapter_t *adapter)1799{1800 scb_t *scb;1801 int i;1802 1803 for(i = 0; i < adapter->max_cmds; i++) {1804 1805 scb = &adapter->scb_list[i];1806 1807 if( scb->sgl64 ) {1808 dma_free_coherent(&adapter->dev->dev,1809 sizeof(mega_sgl64) * adapter->sglen,1810 scb->sgl64, scb->sgl_dma_addr);1811 1812 scb->sgl64 = NULL;1813 }1814 1815 if( scb->pthru ) {1816 dma_free_coherent(&adapter->dev->dev,1817 sizeof(mega_passthru), scb->pthru,1818 scb->pthru_dma_addr);1819 1820 scb->pthru = NULL;1821 }1822 1823 if( scb->epthru ) {1824 dma_free_coherent(&adapter->dev->dev,1825 sizeof(mega_ext_passthru),1826 scb->epthru, scb->epthru_dma_addr);1827 1828 scb->epthru = NULL;1829 }1830 1831 }1832}1833 1834 1835/*1836 * Get information about the card/driver1837 */1838const char *1839megaraid_info(struct Scsi_Host *host)1840{1841 static char buffer[512];1842 adapter_t *adapter;1843 1844 adapter = (adapter_t *)host->hostdata;1845 1846 sprintf (buffer,1847 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",1848 adapter->fw_version, adapter->product_info.max_commands,1849 adapter->host->max_id, adapter->host->max_channel,1850 (u32)adapter->host->max_lun);1851 return buffer;1852}1853 1854/*1855 * Abort a previous SCSI request. Only commands on the pending list can be1856 * aborted. All the commands issued to the F/W must complete.1857 */1858static int1859megaraid_abort(struct scsi_cmnd *cmd)1860{1861 adapter_t *adapter;1862 int rval;1863 1864 adapter = (adapter_t *)cmd->device->host->hostdata;1865 1866 rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT);1867 1868 /*1869 * This is required here to complete any completed requests1870 * to be communicated over to the mid layer.1871 */1872 mega_rundoneq(adapter);1873 1874 return rval;1875}1876 1877 1878static int1879megaraid_reset(struct scsi_cmnd *cmd)1880{1881 adapter_t *adapter;1882 megacmd_t mc;1883 int rval;1884 1885 adapter = (adapter_t *)cmd->device->host->hostdata;1886 1887#if MEGA_HAVE_CLUSTERING1888 mc.cmd = MEGA_CLUSTER_CMD;1889 mc.opcode = MEGA_RESET_RESERVATIONS;1890 1891 if( mega_internal_command(adapter, &mc, NULL) != 0 ) {1892 dev_warn(&adapter->dev->dev, "reservation reset failed\n");1893 }1894 else {1895 dev_info(&adapter->dev->dev, "reservation reset\n");1896 }1897#endif1898 1899 spin_lock_irq(&adapter->lock);1900 1901 rval = megaraid_abort_and_reset(adapter, NULL, SCB_RESET);1902 1903 /*1904 * This is required here to complete any completed requests1905 * to be communicated over to the mid layer.1906 */1907 mega_rundoneq(adapter);1908 spin_unlock_irq(&adapter->lock);1909 1910 return rval;1911}1912 1913/**1914 * megaraid_abort_and_reset()1915 * @adapter: megaraid soft state1916 * @cmd: scsi command to be aborted or reset1917 * @aor: abort or reset flag1918 *1919 * Try to locate the scsi command in the pending queue. If found and is not1920 * issued to the controller, abort/reset it. Otherwise return failure1921 */1922static int1923megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor)1924{1925 struct list_head *pos, *next;1926 scb_t *scb;1927 1928 if (aor == SCB_ABORT)1929 dev_warn(&adapter->dev->dev,1930 "ABORTING cmd=%x <c=%d t=%d l=%d>\n",1931 cmd->cmnd[0], cmd->device->channel,1932 cmd->device->id, (u32)cmd->device->lun);1933 else1934 dev_warn(&adapter->dev->dev, "RESETTING\n");1935 1936 if(list_empty(&adapter->pending_list))1937 return FAILED;1938 1939 list_for_each_safe(pos, next, &adapter->pending_list) {1940 1941 scb = list_entry(pos, scb_t, list);1942 1943 if (!cmd || scb->cmd == cmd) { /* Found command */1944 1945 scb->state |= aor;1946 1947 /*1948 * Check if this command has firmware ownership. If1949 * yes, we cannot reset this command. Whenever f/w1950 * completes this command, we will return appropriate1951 * status from ISR.1952 */1953 if( scb->state & SCB_ISSUED ) {1954 1955 dev_warn(&adapter->dev->dev,1956 "%s[%x], fw owner\n",1957 (aor==SCB_ABORT) ? "ABORTING":"RESET",1958 scb->idx);1959 1960 return FAILED;1961 }1962 /*1963 * Not yet issued! Remove from the pending1964 * list1965 */1966 dev_warn(&adapter->dev->dev,1967 "%s-[%x], driver owner\n",1968 (cmd) ? "ABORTING":"RESET",1969 scb->idx);1970 mega_free_scb(adapter, scb);1971 1972 if (cmd) {1973 cmd->result = (DID_ABORT << 16);1974 list_add_tail(SCSI_LIST(cmd),1975 &adapter->completed_list);1976 }1977 1978 return SUCCESS;1979 }1980 }1981 1982 return FAILED;1983}1984 1985static inline int1986make_local_pdev(adapter_t *adapter, struct pci_dev **pdev)1987{1988 *pdev = pci_alloc_dev(NULL);1989 1990 if( *pdev == NULL ) return -1;1991 1992 memcpy(*pdev, adapter->dev, sizeof(struct pci_dev));1993 1994 if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) {1995 kfree(*pdev);1996 return -1;1997 }1998 1999 return 0;2000}2001 2002static inline void2003free_local_pdev(struct pci_dev *pdev)2004{2005 kfree(pdev);2006}2007 2008/**2009 * mega_allocate_inquiry()2010 * @dma_handle: handle returned for dma address2011 * @pdev: handle to pci device2012 *2013 * allocates memory for inquiry structure2014 */2015static inline void *2016mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev)2017{2018 return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3),2019 dma_handle, GFP_KERNEL);2020}2021 2022 2023static inline void2024mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev)2025{2026 dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry,2027 dma_handle);2028}2029 2030 2031#ifdef CONFIG_PROC_FS2032/* Following code handles /proc fs */2033 2034/**2035 * proc_show_config()2036 * @m: Synthetic file construction data2037 * @v: File iterator2038 *2039 * Display configuration information about the controller.2040 */2041static int2042proc_show_config(struct seq_file *m, void *v)2043{2044 2045 adapter_t *adapter = m->private;2046 2047 seq_puts(m, MEGARAID_VERSION);2048 if(adapter->product_info.product_name[0])2049 seq_printf(m, "%s\n", adapter->product_info.product_name);2050 2051 seq_puts(m, "Controller Type: ");2052 2053 if( adapter->flag & BOARD_MEMMAP )2054 seq_puts(m, "438/466/467/471/493/518/520/531/532\n");2055 else2056 seq_puts(m, "418/428/434\n");2057 2058 if(adapter->flag & BOARD_40LD)2059 seq_puts(m, "Controller Supports 40 Logical Drives\n");2060 2061 if(adapter->flag & BOARD_64BIT)2062 seq_puts(m, "Controller capable of 64-bit memory addressing\n");2063 if( adapter->has_64bit_addr )2064 seq_puts(m, "Controller using 64-bit memory addressing\n");2065 else2066 seq_puts(m, "Controller is not using 64-bit memory addressing\n");2067 2068 seq_printf(m, "Base = %08lx, Irq = %d, ",2069 adapter->base, adapter->host->irq);2070 2071 seq_printf(m, "Logical Drives = %d, Channels = %d\n",2072 adapter->numldrv, adapter->product_info.nchannels);2073 2074 seq_printf(m, "Version =%s:%s, DRAM = %dMb\n",2075 adapter->fw_version, adapter->bios_version,2076 adapter->product_info.dram_size);2077 2078 seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n",2079 adapter->product_info.max_commands, adapter->max_cmds);2080 2081 seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb);2082 seq_printf(m, "support_random_del = %d\n", adapter->support_random_del);2083 seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled);2084 seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv);2085 seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled);2086 seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch);2087 seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt);2088 seq_printf(m, "quiescent = %d\n",2089 atomic_read(&adapter->quiescent));2090 seq_printf(m, "has_cluster = %d\n", adapter->has_cluster);2091 2092 seq_puts(m, "\nModule Parameters:\n");2093 seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun);2094 seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io);2095 return 0;2096}2097 2098/**2099 * proc_show_stat()2100 * @m: Synthetic file construction data2101 * @v: File iterator2102 *2103 * Display statistical information about the I/O activity.2104 */2105static int2106proc_show_stat(struct seq_file *m, void *v)2107{2108 adapter_t *adapter = m->private;2109#if MEGA_HAVE_STATS2110 int i;2111#endif2112 2113 seq_puts(m, "Statistical Information for this controller\n");2114 seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds));2115#if MEGA_HAVE_STATS2116 for(i = 0; i < adapter->numldrv; i++) {2117 seq_printf(m, "Logical Drive %d:\n", i);2118 seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n",2119 adapter->nreads[i], adapter->nwrites[i]);2120 seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n",2121 adapter->nreadblocks[i], adapter->nwriteblocks[i]);2122 seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n",2123 adapter->rd_errors[i], adapter->wr_errors[i]);2124 }2125#else2126 seq_puts(m, "IO and error counters not compiled in driver.\n");2127#endif2128 return 0;2129}2130 2131 2132/**2133 * proc_show_mbox()2134 * @m: Synthetic file construction data2135 * @v: File iterator2136 *2137 * Display mailbox information for the last command issued. This information2138 * is good for debugging.2139 */2140static int2141proc_show_mbox(struct seq_file *m, void *v)2142{2143 adapter_t *adapter = m->private;2144 volatile mbox_t *mbox = adapter->mbox;2145 2146 seq_puts(m, "Contents of Mail Box Structure\n");2147 seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd);2148 seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid);2149 seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors);2150 seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba);2151 seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr);2152 seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv);2153 seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements);2154 seq_printf(m, " Busy = %01x\n", mbox->m_in.busy);2155 seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status);2156 return 0;2157}2158 2159 2160/**2161 * proc_show_rebuild_rate()2162 * @m: Synthetic file construction data2163 * @v: File iterator2164 *2165 * Display current rebuild rate2166 */2167static int2168proc_show_rebuild_rate(struct seq_file *m, void *v)2169{2170 adapter_t *adapter = m->private;2171 dma_addr_t dma_handle;2172 caddr_t inquiry;2173 struct pci_dev *pdev;2174 2175 if( make_local_pdev(adapter, &pdev) != 0 )2176 return 0;2177 2178 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )2179 goto free_pdev;2180 2181 if( mega_adapinq(adapter, dma_handle) != 0 ) {2182 seq_puts(m, "Adapter inquiry failed.\n");2183 dev_warn(&adapter->dev->dev, "inquiry failed\n");2184 goto free_inquiry;2185 }2186 2187 if( adapter->flag & BOARD_40LD )2188 seq_printf(m, "Rebuild Rate: [%d%%]\n",2189 ((mega_inquiry3 *)inquiry)->rebuild_rate);2190 else2191 seq_printf(m, "Rebuild Rate: [%d%%]\n",2192 ((mraid_ext_inquiry *)2193 inquiry)->raid_inq.adapter_info.rebuild_rate);2194 2195free_inquiry:2196 mega_free_inquiry(inquiry, dma_handle, pdev);2197free_pdev:2198 free_local_pdev(pdev);2199 return 0;2200}2201 2202 2203/**2204 * proc_show_battery()2205 * @m: Synthetic file construction data2206 * @v: File iterator2207 *2208 * Display information about the battery module on the controller.2209 */2210static int2211proc_show_battery(struct seq_file *m, void *v)2212{2213 adapter_t *adapter = m->private;2214 dma_addr_t dma_handle;2215 caddr_t inquiry;2216 struct pci_dev *pdev;2217 u8 battery_status;2218 2219 if( make_local_pdev(adapter, &pdev) != 0 )2220 return 0;2221 2222 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )2223 goto free_pdev;2224 2225 if( mega_adapinq(adapter, dma_handle) != 0 ) {2226 seq_puts(m, "Adapter inquiry failed.\n");2227 dev_warn(&adapter->dev->dev, "inquiry failed\n");2228 goto free_inquiry;2229 }2230 2231 if( adapter->flag & BOARD_40LD ) {2232 battery_status = ((mega_inquiry3 *)inquiry)->battery_status;2233 }2234 else {2235 battery_status = ((mraid_ext_inquiry *)inquiry)->2236 raid_inq.adapter_info.battery_status;2237 }2238 2239 /*2240 * Decode the battery status2241 */2242 seq_printf(m, "Battery Status:[%d]", battery_status);2243 2244 if(battery_status == MEGA_BATT_CHARGE_DONE)2245 seq_puts(m, " Charge Done");2246 2247 if(battery_status & MEGA_BATT_MODULE_MISSING)2248 seq_puts(m, " Module Missing");2249 2250 if(battery_status & MEGA_BATT_LOW_VOLTAGE)2251 seq_puts(m, " Low Voltage");2252 2253 if(battery_status & MEGA_BATT_TEMP_HIGH)2254 seq_puts(m, " Temperature High");2255 2256 if(battery_status & MEGA_BATT_PACK_MISSING)2257 seq_puts(m, " Pack Missing");2258 2259 if(battery_status & MEGA_BATT_CHARGE_INPROG)2260 seq_puts(m, " Charge In-progress");2261 2262 if(battery_status & MEGA_BATT_CHARGE_FAIL)2263 seq_puts(m, " Charge Fail");2264 2265 if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)2266 seq_puts(m, " Cycles Exceeded");2267 2268 seq_putc(m, '\n');2269 2270free_inquiry:2271 mega_free_inquiry(inquiry, dma_handle, pdev);2272free_pdev:2273 free_local_pdev(pdev);2274 return 0;2275}2276 2277 2278/*2279 * Display scsi inquiry2280 */2281static void2282mega_print_inquiry(struct seq_file *m, char *scsi_inq)2283{2284 int i;2285 2286 seq_puts(m, " Vendor: ");2287 seq_write(m, scsi_inq + 8, 8);2288 seq_puts(m, " Model: ");2289 seq_write(m, scsi_inq + 16, 16);2290 seq_puts(m, " Rev: ");2291 seq_write(m, scsi_inq + 32, 4);2292 seq_putc(m, '\n');2293 2294 i = scsi_inq[0] & 0x1f;2295 seq_printf(m, " Type: %s ", scsi_device_type(i));2296 2297 seq_printf(m, " ANSI SCSI revision: %02x",2298 scsi_inq[2] & 0x07);2299 2300 if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )2301 seq_puts(m, " CCS\n");2302 else2303 seq_putc(m, '\n');2304}2305 2306/**2307 * proc_show_pdrv()2308 * @m: Synthetic file construction data2309 * @adapter: pointer to our soft state2310 * @channel: channel2311 *2312 * Display information about the physical drives.2313 */2314static int2315proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel)2316{2317 dma_addr_t dma_handle;2318 char *scsi_inq;2319 dma_addr_t scsi_inq_dma_handle;2320 caddr_t inquiry;2321 struct pci_dev *pdev;2322 u8 *pdrv_state;2323 u8 state;2324 int tgt;2325 int max_channels;2326 int i;2327 2328 if( make_local_pdev(adapter, &pdev) != 0 )2329 return 0;2330 2331 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )2332 goto free_pdev;2333 2334 if( mega_adapinq(adapter, dma_handle) != 0 ) {2335 seq_puts(m, "Adapter inquiry failed.\n");2336 dev_warn(&adapter->dev->dev, "inquiry failed\n");2337 goto free_inquiry;2338 }2339 2340 2341 scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle,2342 GFP_KERNEL);2343 if( scsi_inq == NULL ) {2344 seq_puts(m, "memory not available for scsi inq.\n");2345 goto free_inquiry;2346 }2347 2348 if( adapter->flag & BOARD_40LD ) {2349 pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;2350 }2351 else {2352 pdrv_state = ((mraid_ext_inquiry *)inquiry)->2353 raid_inq.pdrv_info.pdrv_state;2354 }2355 2356 max_channels = adapter->product_info.nchannels;2357 2358 if( channel >= max_channels ) {2359 goto free_pci;2360 }2361 2362 for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {2363 2364 i = channel*16 + tgt;2365 2366 state = *(pdrv_state + i);2367 switch( state & 0x0F ) {2368 case PDRV_ONLINE:2369 seq_printf(m, "Channel:%2d Id:%2d State: Online",2370 channel, tgt);2371 break;2372 2373 case PDRV_FAILED:2374 seq_printf(m, "Channel:%2d Id:%2d State: Failed",2375 channel, tgt);2376 break;2377 2378 case PDRV_RBLD:2379 seq_printf(m, "Channel:%2d Id:%2d State: Rebuild",2380 channel, tgt);2381 break;2382 2383 case PDRV_HOTSPARE:2384 seq_printf(m, "Channel:%2d Id:%2d State: Hot spare",2385 channel, tgt);2386 break;2387 2388 default:2389 seq_printf(m, "Channel:%2d Id:%2d State: Un-configured",2390 channel, tgt);2391 break;2392 }2393 2394 /*2395 * This interface displays inquiries for disk drives2396 * only. Inquries for logical drives and non-disk2397 * devices are available through /proc/scsi/scsi2398 */2399 memset(scsi_inq, 0, 256);2400 if( mega_internal_dev_inquiry(adapter, channel, tgt,2401 scsi_inq_dma_handle) ||2402 (scsi_inq[0] & 0x1F) != TYPE_DISK ) {2403 continue;2404 }2405 2406 /*2407 * Check for overflow. We print less than 2402408 * characters for inquiry2409 */2410 seq_puts(m, ".\n");2411 mega_print_inquiry(m, scsi_inq);2412 }2413 2414free_pci:2415 dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle);2416free_inquiry:2417 mega_free_inquiry(inquiry, dma_handle, pdev);2418free_pdev:2419 free_local_pdev(pdev);2420 return 0;2421}2422 2423/**2424 * proc_show_pdrv_ch0()2425 * @m: Synthetic file construction data2426 * @v: File iterator2427 *2428 * Display information about the physical drives on physical channel 0.2429 */2430static int2431proc_show_pdrv_ch0(struct seq_file *m, void *v)2432{2433 return proc_show_pdrv(m, m->private, 0);2434}2435 2436 2437/**2438 * proc_show_pdrv_ch1()2439 * @m: Synthetic file construction data2440 * @v: File iterator2441 *2442 * Display information about the physical drives on physical channel 1.2443 */2444static int2445proc_show_pdrv_ch1(struct seq_file *m, void *v)2446{2447 return proc_show_pdrv(m, m->private, 1);2448}2449 2450 2451/**2452 * proc_show_pdrv_ch2()2453 * @m: Synthetic file construction data2454 * @v: File iterator2455 *2456 * Display information about the physical drives on physical channel 2.2457 */2458static int2459proc_show_pdrv_ch2(struct seq_file *m, void *v)2460{2461 return proc_show_pdrv(m, m->private, 2);2462}2463 2464 2465/**2466 * proc_show_pdrv_ch3()2467 * @m: Synthetic file construction data2468 * @v: File iterator2469 *2470 * Display information about the physical drives on physical channel 3.2471 */2472static int2473proc_show_pdrv_ch3(struct seq_file *m, void *v)2474{2475 return proc_show_pdrv(m, m->private, 3);2476}2477 2478 2479/**2480 * proc_show_rdrv()2481 * @m: Synthetic file construction data2482 * @adapter: pointer to our soft state2483 * @start: starting logical drive to display2484 * @end: ending logical drive to display2485 *2486 * We do not print the inquiry information since its already available through2487 * /proc/scsi/scsi interface2488 */2489static int2490proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end )2491{2492 dma_addr_t dma_handle;2493 logdrv_param *lparam;2494 megacmd_t mc;2495 char *disk_array;2496 dma_addr_t disk_array_dma_handle;2497 caddr_t inquiry;2498 struct pci_dev *pdev;2499 u8 *rdrv_state;2500 int num_ldrv;2501 u32 array_sz;2502 int i;2503 2504 if( make_local_pdev(adapter, &pdev) != 0 )2505 return 0;2506 2507 if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL )2508 goto free_pdev;2509 2510 if( mega_adapinq(adapter, dma_handle) != 0 ) {2511 seq_puts(m, "Adapter inquiry failed.\n");2512 dev_warn(&adapter->dev->dev, "inquiry failed\n");2513 goto free_inquiry;2514 }2515 2516 memset(&mc, 0, sizeof(megacmd_t));2517 2518 if( adapter->flag & BOARD_40LD ) {2519 array_sz = sizeof(disk_array_40ld);2520 2521 rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state;2522 2523 num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv;2524 }2525 else {2526 array_sz = sizeof(disk_array_8ld);2527 2528 rdrv_state = ((mraid_ext_inquiry *)inquiry)->2529 raid_inq.logdrv_info.ldrv_state;2530 2531 num_ldrv = ((mraid_ext_inquiry *)inquiry)->2532 raid_inq.logdrv_info.num_ldrv;2533 }2534 2535 disk_array = dma_alloc_coherent(&pdev->dev, array_sz,2536 &disk_array_dma_handle, GFP_KERNEL);2537 2538 if( disk_array == NULL ) {2539 seq_puts(m, "memory not available.\n");2540 goto free_inquiry;2541 }2542 2543 mc.xferaddr = (u32)disk_array_dma_handle;2544 2545 if( adapter->flag & BOARD_40LD ) {2546 mc.cmd = FC_NEW_CONFIG;2547 mc.opcode = OP_DCMD_READ_CONFIG;2548 2549 if( mega_internal_command(adapter, &mc, NULL) ) {2550 seq_puts(m, "40LD read config failed.\n");2551 goto free_pci;2552 }2553 2554 }2555 else {2556 mc.cmd = NEW_READ_CONFIG_8LD;2557 2558 if( mega_internal_command(adapter, &mc, NULL) ) {2559 mc.cmd = READ_CONFIG_8LD;2560 if( mega_internal_command(adapter, &mc, NULL) ) {2561 seq_puts(m, "8LD read config failed.\n");2562 goto free_pci;2563 }2564 }2565 }2566 2567 for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) {2568 2569 if( adapter->flag & BOARD_40LD ) {2570 lparam =2571 &((disk_array_40ld *)disk_array)->ldrv[i].lparam;2572 }2573 else {2574 lparam =2575 &((disk_array_8ld *)disk_array)->ldrv[i].lparam;2576 }2577 2578 /*2579 * Check for overflow. We print less than 240 characters for2580 * information about each logical drive.2581 */2582 seq_printf(m, "Logical drive:%2d:, ", i);2583 2584 switch( rdrv_state[i] & 0x0F ) {2585 case RDRV_OFFLINE:2586 seq_puts(m, "state: offline");2587 break;2588 case RDRV_DEGRADED:2589 seq_puts(m, "state: degraded");2590 break;2591 case RDRV_OPTIMAL:2592 seq_puts(m, "state: optimal");2593 break;2594 case RDRV_DELETED:2595 seq_puts(m, "state: deleted");2596 break;2597 default:2598 seq_puts(m, "state: unknown");2599 break;2600 }2601 2602 /*2603 * Check if check consistency or initialization is going on2604 * for this logical drive.2605 */2606 if( (rdrv_state[i] & 0xF0) == 0x20 )2607 seq_puts(m, ", check-consistency in progress");2608 else if( (rdrv_state[i] & 0xF0) == 0x10 )2609 seq_puts(m, ", initialization in progress");2610 2611 seq_putc(m, '\n');2612 2613 seq_printf(m, "Span depth:%3d, ", lparam->span_depth);2614 seq_printf(m, "RAID level:%3d, ", lparam->level);2615 seq_printf(m, "Stripe size:%3d, ",2616 lparam->stripe_sz ? lparam->stripe_sz/2: 128);2617 seq_printf(m, "Row size:%3d\n", lparam->row_size);2618 2619 seq_puts(m, "Read Policy: ");2620 switch(lparam->read_ahead) {2621 case NO_READ_AHEAD:2622 seq_puts(m, "No read ahead, ");2623 break;2624 case READ_AHEAD:2625 seq_puts(m, "Read ahead, ");2626 break;2627 case ADAP_READ_AHEAD:2628 seq_puts(m, "Adaptive, ");2629 break;2630 2631 }2632 2633 seq_puts(m, "Write Policy: ");2634 switch(lparam->write_mode) {2635 case WRMODE_WRITE_THRU:2636 seq_puts(m, "Write thru, ");2637 break;2638 case WRMODE_WRITE_BACK:2639 seq_puts(m, "Write back, ");2640 break;2641 }2642 2643 seq_puts(m, "Cache Policy: ");2644 switch(lparam->direct_io) {2645 case CACHED_IO:2646 seq_puts(m, "Cached IO\n\n");2647 break;2648 case DIRECT_IO:2649 seq_puts(m, "Direct IO\n\n");2650 break;2651 }2652 }2653 2654free_pci:2655 dma_free_coherent(&pdev->dev, array_sz, disk_array,2656 disk_array_dma_handle);2657free_inquiry:2658 mega_free_inquiry(inquiry, dma_handle, pdev);2659free_pdev:2660 free_local_pdev(pdev);2661 return 0;2662}2663 2664/**2665 * proc_show_rdrv_10()2666 * @m: Synthetic file construction data2667 * @v: File iterator2668 *2669 * Display real time information about the logical drives 0 through 9.2670 */2671static int2672proc_show_rdrv_10(struct seq_file *m, void *v)2673{2674 return proc_show_rdrv(m, m->private, 0, 9);2675}2676 2677 2678/**2679 * proc_show_rdrv_20()2680 * @m: Synthetic file construction data2681 * @v: File iterator2682 *2683 * Display real time information about the logical drives 0 through 9.2684 */2685static int2686proc_show_rdrv_20(struct seq_file *m, void *v)2687{2688 return proc_show_rdrv(m, m->private, 10, 19);2689}2690 2691 2692/**2693 * proc_show_rdrv_30()2694 * @m: Synthetic file construction data2695 * @v: File iterator2696 *2697 * Display real time information about the logical drives 0 through 9.2698 */2699static int2700proc_show_rdrv_30(struct seq_file *m, void *v)2701{2702 return proc_show_rdrv(m, m->private, 20, 29);2703}2704 2705 2706/**2707 * proc_show_rdrv_40()2708 * @m: Synthetic file construction data2709 * @v: File iterator2710 *2711 * Display real time information about the logical drives 0 through 9.2712 */2713static int2714proc_show_rdrv_40(struct seq_file *m, void *v)2715{2716 return proc_show_rdrv(m, m->private, 30, 39);2717}2718 2719/**2720 * mega_create_proc_entry()2721 * @index: index in soft state array2722 * @parent: parent node for this /proc entry2723 *2724 * Creates /proc entries for our controllers.2725 */2726static void2727mega_create_proc_entry(int index, struct proc_dir_entry *parent)2728{2729 adapter_t *adapter = hba_soft_state[index];2730 struct proc_dir_entry *dir;2731 u8 string[16];2732 2733 sprintf(string, "hba%d", adapter->host->host_no);2734 dir = proc_mkdir_data(string, 0, parent, adapter);2735 if (!dir) {2736 dev_warn(&adapter->dev->dev, "proc_mkdir failed\n");2737 return;2738 }2739 2740 proc_create_single_data("config", S_IRUSR, dir,2741 proc_show_config, adapter);2742 proc_create_single_data("stat", S_IRUSR, dir,2743 proc_show_stat, adapter);2744 proc_create_single_data("mailbox", S_IRUSR, dir,2745 proc_show_mbox, adapter);2746#if MEGA_HAVE_ENH_PROC2747 proc_create_single_data("rebuild-rate", S_IRUSR, dir,2748 proc_show_rebuild_rate, adapter);2749 proc_create_single_data("battery-status", S_IRUSR, dir,2750 proc_show_battery, adapter);2751 proc_create_single_data("diskdrives-ch0", S_IRUSR, dir,2752 proc_show_pdrv_ch0, adapter);2753 proc_create_single_data("diskdrives-ch1", S_IRUSR, dir,2754 proc_show_pdrv_ch1, adapter);2755 proc_create_single_data("diskdrives-ch2", S_IRUSR, dir,2756 proc_show_pdrv_ch2, adapter);2757 proc_create_single_data("diskdrives-ch3", S_IRUSR, dir,2758 proc_show_pdrv_ch3, adapter);2759 proc_create_single_data("raiddrives-0-9", S_IRUSR, dir,2760 proc_show_rdrv_10, adapter);2761 proc_create_single_data("raiddrives-10-19", S_IRUSR, dir,2762 proc_show_rdrv_20, adapter);2763 proc_create_single_data("raiddrives-20-29", S_IRUSR, dir,2764 proc_show_rdrv_30, adapter);2765 proc_create_single_data("raiddrives-30-39", S_IRUSR, dir,2766 proc_show_rdrv_40, adapter);2767#endif2768}2769 2770#else2771static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent)2772{2773}2774#endif2775 2776 2777/*2778 * megaraid_biosparam()2779 *2780 * Return the disk geometry for a particular disk2781 */2782static int2783megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev,2784 sector_t capacity, int geom[])2785{2786 adapter_t *adapter;2787 int heads;2788 int sectors;2789 int cylinders;2790 2791 /* Get pointer to host config structure */2792 adapter = (adapter_t *)sdev->host->hostdata;2793 2794 if (IS_RAID_CH(adapter, sdev->channel)) {2795 /* Default heads (64) & sectors (32) */2796 heads = 64;2797 sectors = 32;2798 cylinders = (ulong)capacity / (heads * sectors);2799 2800 /*2801 * Handle extended translation size for logical drives2802 * > 1Gb2803 */2804 if ((ulong)capacity >= 0x200000) {2805 heads = 255;2806 sectors = 63;2807 cylinders = (ulong)capacity / (heads * sectors);2808 }2809 2810 /* return result */2811 geom[0] = heads;2812 geom[1] = sectors;2813 geom[2] = cylinders;2814 }2815 else {2816 if (scsi_partsize(bdev, capacity, geom))2817 return 0;2818 2819 dev_info(&adapter->dev->dev,2820 "invalid partition on this disk on channel %d\n",2821 sdev->channel);2822 2823 /* Default heads (64) & sectors (32) */2824 heads = 64;2825 sectors = 32;2826 cylinders = (ulong)capacity / (heads * sectors);2827 2828 /* Handle extended translation size for logical drives > 1Gb */2829 if ((ulong)capacity >= 0x200000) {2830 heads = 255;2831 sectors = 63;2832 cylinders = (ulong)capacity / (heads * sectors);2833 }2834 2835 /* return result */2836 geom[0] = heads;2837 geom[1] = sectors;2838 geom[2] = cylinders;2839 }2840 2841 return 0;2842}2843 2844/**2845 * mega_init_scb()2846 * @adapter: pointer to our soft state2847 *2848 * Allocate memory for the various pointers in the scb structures:2849 * scatter-gather list pointer, passthru and extended passthru structure2850 * pointers.2851 */2852static int2853mega_init_scb(adapter_t *adapter)2854{2855 scb_t *scb;2856 int i;2857 2858 for( i = 0; i < adapter->max_cmds; i++ ) {2859 2860 scb = &adapter->scb_list[i];2861 2862 scb->sgl64 = NULL;2863 scb->sgl = NULL;2864 scb->pthru = NULL;2865 scb->epthru = NULL;2866 }2867 2868 for( i = 0; i < adapter->max_cmds; i++ ) {2869 2870 scb = &adapter->scb_list[i];2871 2872 scb->idx = i;2873 2874 scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev,2875 sizeof(mega_sgl64) * adapter->sglen,2876 &scb->sgl_dma_addr, GFP_KERNEL);2877 2878 scb->sgl = (mega_sglist *)scb->sgl64;2879 2880 if( !scb->sgl ) {2881 dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n");2882 mega_free_sgl(adapter);2883 return -1;2884 }2885 2886 scb->pthru = dma_alloc_coherent(&adapter->dev->dev,2887 sizeof(mega_passthru),2888 &scb->pthru_dma_addr, GFP_KERNEL);2889 2890 if( !scb->pthru ) {2891 dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n");2892 mega_free_sgl(adapter);2893 return -1;2894 }2895 2896 scb->epthru = dma_alloc_coherent(&adapter->dev->dev,2897 sizeof(mega_ext_passthru),2898 &scb->epthru_dma_addr, GFP_KERNEL);2899 2900 if( !scb->epthru ) {2901 dev_warn(&adapter->dev->dev,2902 "Can't allocate extended passthru\n");2903 mega_free_sgl(adapter);2904 return -1;2905 }2906 2907 2908 scb->dma_type = MEGA_DMA_TYPE_NONE;2909 2910 /*2911 * Link to free list2912 * lock not required since we are loading the driver, so no2913 * commands possible right now.2914 */2915 scb->state = SCB_FREE;2916 scb->cmd = NULL;2917 list_add(&scb->list, &adapter->free_list);2918 }2919 2920 return 0;2921}2922 2923 2924/**2925 * megadev_open()2926 * @inode: unused2927 * @filep: unused2928 *2929 * Routines for the character/ioctl interface to the driver. Find out if this2930 * is a valid open. 2931 */2932static int2933megadev_open (struct inode *inode, struct file *filep)2934{2935 /*2936 * Only allow superuser to access private ioctl interface2937 */2938 if( !capable(CAP_SYS_ADMIN) ) return -EACCES;2939 2940 return 0;2941}2942 2943 2944/**2945 * megadev_ioctl()2946 * @filep: Our device file2947 * @cmd: ioctl command2948 * @arg: user buffer2949 *2950 * ioctl entry point for our private ioctl interface. We move the data in from2951 * the user space, prepare the command (if necessary, convert the old MIMD2952 * ioctl to new ioctl command), and issue a synchronous command to the2953 * controller.2954 */2955static int2956megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)2957{2958 adapter_t *adapter;2959 nitioctl_t uioc;2960 int adapno;2961 int rval;2962 mega_passthru __user *upthru; /* user address for passthru */2963 mega_passthru *pthru; /* copy user passthru here */2964 dma_addr_t pthru_dma_hndl;2965 void *data = NULL; /* data to be transferred */2966 dma_addr_t data_dma_hndl; /* dma handle for data xfer area */2967 megacmd_t mc;2968#if MEGA_HAVE_STATS2969 megastat_t __user *ustats = NULL;2970 int num_ldrv = 0;2971#endif2972 u32 uxferaddr = 0;2973 struct pci_dev *pdev;2974 2975 /*2976 * Make sure only USCSICMD are issued through this interface.2977 * MIMD application would still fire different command.2978 */2979 if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) {2980 return -EINVAL;2981 }2982 2983 /*2984 * Check and convert a possible MIMD command to NIT command.2985 * mega_m_to_n() copies the data from the user space, so we do not2986 * have to do it here.2987 * NOTE: We will need some user address to copyout the data, therefore2988 * the inteface layer will also provide us with the required user2989 * addresses.2990 */2991 memset(&uioc, 0, sizeof(nitioctl_t));2992 if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 )2993 return rval;2994 2995 2996 switch( uioc.opcode ) {2997 2998 case GET_DRIVER_VER:2999 if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) )3000 return (-EFAULT);3001 3002 break;3003 3004 case GET_N_ADAP:3005 if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) )3006 return (-EFAULT);3007 3008 /*3009 * Shucks. MIMD interface returns a positive value for number3010 * of adapters. TODO: Change it to return 0 when there is no3011 * applicatio using mimd interface.3012 */3013 return hba_count;3014 3015 case GET_ADAP_INFO:3016 3017 /*3018 * Which adapter3019 */3020 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )3021 return (-ENODEV);3022 3023 if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno,3024 sizeof(struct mcontroller)) )3025 return (-EFAULT);3026 break;3027 3028#if MEGA_HAVE_STATS3029 3030 case GET_STATS:3031 /*3032 * Which adapter3033 */3034 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )3035 return (-ENODEV);3036 3037 adapter = hba_soft_state[adapno];3038 3039 ustats = uioc.uioc_uaddr;3040 3041 if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) )3042 return (-EFAULT);3043 3044 /*3045 * Check for the validity of the logical drive number3046 */3047 if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL;3048 3049 if( copy_to_user(ustats->nreads, adapter->nreads,3050 num_ldrv*sizeof(u32)) )3051 return -EFAULT;3052 3053 if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks,3054 num_ldrv*sizeof(u32)) )3055 return -EFAULT;3056 3057 if( copy_to_user(ustats->nwrites, adapter->nwrites,3058 num_ldrv*sizeof(u32)) )3059 return -EFAULT;3060 3061 if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks,3062 num_ldrv*sizeof(u32)) )3063 return -EFAULT;3064 3065 if( copy_to_user(ustats->rd_errors, adapter->rd_errors,3066 num_ldrv*sizeof(u32)) )3067 return -EFAULT;3068 3069 if( copy_to_user(ustats->wr_errors, adapter->wr_errors,3070 num_ldrv*sizeof(u32)) )3071 return -EFAULT;3072 3073 return 0;3074 3075#endif3076 case MBOX_CMD:3077 3078 /*3079 * Which adapter3080 */3081 if( (adapno = GETADAP(uioc.adapno)) >= hba_count )3082 return (-ENODEV);3083 3084 adapter = hba_soft_state[adapno];3085 3086 /*3087 * Deletion of logical drive is a special case. The adapter3088 * should be quiescent before this command is issued.3089 */3090 if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV &&3091 uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) {3092 3093 /*3094 * Do we support this feature3095 */3096 if( !adapter->support_random_del ) {3097 dev_warn(&adapter->dev->dev, "logdrv "3098 "delete on non-supporting F/W\n");3099 3100 return (-EINVAL);3101 }3102 3103 rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] );3104 3105 if( rval == 0 ) {3106 memset(&mc, 0, sizeof(megacmd_t));3107 3108 mc.status = rval;3109 3110 rval = mega_n_to_m((void __user *)arg, &mc);3111 }3112 3113 return rval;3114 }3115 /*3116 * This interface only support the regular passthru commands.3117 * Reject extended passthru and 64-bit passthru3118 */3119 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 ||3120 uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) {3121 3122 dev_warn(&adapter->dev->dev, "rejected passthru\n");3123 3124 return (-EINVAL);3125 }3126 3127 /*3128 * For all internal commands, the buffer must be allocated in3129 * <4GB address range3130 */3131 if( make_local_pdev(adapter, &pdev) != 0 )3132 return -EIO;3133 3134 /* Is it a passthru command or a DCMD */3135 if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) {3136 /* Passthru commands */3137 3138 pthru = dma_alloc_coherent(&pdev->dev,3139 sizeof(mega_passthru),3140 &pthru_dma_hndl, GFP_KERNEL);3141 3142 if( pthru == NULL ) {3143 free_local_pdev(pdev);3144 return (-ENOMEM);3145 }3146 3147 /*3148 * The user passthru structure3149 */3150 upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;3151 3152 /*3153 * Copy in the user passthru here.3154 */3155 if( copy_from_user(pthru, upthru,3156 sizeof(mega_passthru)) ) {3157 3158 dma_free_coherent(&pdev->dev,3159 sizeof(mega_passthru),3160 pthru, pthru_dma_hndl);3161 3162 free_local_pdev(pdev);3163 3164 return (-EFAULT);3165 }3166 3167 /*3168 * Is there a data transfer3169 */3170 if( pthru->dataxferlen ) {3171 data = dma_alloc_coherent(&pdev->dev,3172 pthru->dataxferlen,3173 &data_dma_hndl,3174 GFP_KERNEL);3175 3176 if( data == NULL ) {3177 dma_free_coherent(&pdev->dev,3178 sizeof(mega_passthru),3179 pthru,3180 pthru_dma_hndl);3181 3182 free_local_pdev(pdev);3183 3184 return (-ENOMEM);3185 }3186 3187 /*3188 * Save the user address and point the kernel3189 * address at just allocated memory3190 */3191 uxferaddr = pthru->dataxferaddr;3192 pthru->dataxferaddr = data_dma_hndl;3193 }3194 3195 3196 /*3197 * Is data coming down-stream3198 */3199 if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) {3200 /*3201 * Get the user data3202 */3203 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,3204 pthru->dataxferlen) ) {3205 rval = (-EFAULT);3206 goto freemem_and_return;3207 }3208 }3209 3210 memset(&mc, 0, sizeof(megacmd_t));3211 3212 mc.cmd = MEGA_MBOXCMD_PASSTHRU;3213 mc.xferaddr = (u32)pthru_dma_hndl;3214 3215 /*3216 * Issue the command3217 */3218 mega_internal_command(adapter, &mc, pthru);3219 3220 rval = mega_n_to_m((void __user *)arg, &mc);3221 3222 if( rval ) goto freemem_and_return;3223 3224 3225 /*3226 * Is data going up-stream3227 */3228 if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {3229 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,3230 pthru->dataxferlen) ) {3231 rval = (-EFAULT);3232 }3233 }3234 3235 /*3236 * Send the request sense data also, irrespective of3237 * whether the user has asked for it or not.3238 */3239 if (copy_to_user(upthru->reqsensearea,3240 pthru->reqsensearea, 14))3241 rval = -EFAULT;3242 3243freemem_and_return:3244 if( pthru->dataxferlen ) {3245 dma_free_coherent(&pdev->dev,3246 pthru->dataxferlen, data,3247 data_dma_hndl);3248 }3249 3250 dma_free_coherent(&pdev->dev, sizeof(mega_passthru),3251 pthru, pthru_dma_hndl);3252 3253 free_local_pdev(pdev);3254 3255 return rval;3256 }3257 else {3258 /* DCMD commands */3259 3260 /*3261 * Is there a data transfer3262 */3263 if( uioc.xferlen ) {3264 data = dma_alloc_coherent(&pdev->dev,3265 uioc.xferlen,3266 &data_dma_hndl,3267 GFP_KERNEL);3268 3269 if( data == NULL ) {3270 free_local_pdev(pdev);3271 return (-ENOMEM);3272 }3273 3274 uxferaddr = MBOX(uioc)->xferaddr;3275 }3276 3277 /*3278 * Is data coming down-stream3279 */3280 if( uioc.xferlen && (uioc.flags & UIOC_WR) ) {3281 /*3282 * Get the user data3283 */3284 if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,3285 uioc.xferlen) ) {3286 3287 dma_free_coherent(&pdev->dev,3288 uioc.xferlen, data,3289 data_dma_hndl);3290 3291 free_local_pdev(pdev);3292 3293 return (-EFAULT);3294 }3295 }3296 3297 memcpy(&mc, MBOX(uioc), sizeof(megacmd_t));3298 3299 mc.xferaddr = (u32)data_dma_hndl;3300 3301 /*3302 * Issue the command3303 */3304 mega_internal_command(adapter, &mc, NULL);3305 3306 rval = mega_n_to_m((void __user *)arg, &mc);3307 3308 if( rval ) {3309 if( uioc.xferlen ) {3310 dma_free_coherent(&pdev->dev,3311 uioc.xferlen, data,3312 data_dma_hndl);3313 }3314 3315 free_local_pdev(pdev);3316 3317 return rval;3318 }3319 3320 /*3321 * Is data going up-stream3322 */3323 if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {3324 if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,3325 uioc.xferlen) ) {3326 3327 rval = (-EFAULT);3328 }3329 }3330 3331 if( uioc.xferlen ) {3332 dma_free_coherent(&pdev->dev, uioc.xferlen,3333 data, data_dma_hndl);3334 }3335 3336 free_local_pdev(pdev);3337 3338 return rval;3339 }3340 3341 default:3342 return (-EINVAL);3343 }3344 3345 return 0;3346}3347 3348static long3349megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)3350{3351 int ret;3352 3353 mutex_lock(&megadev_mutex);3354 ret = megadev_ioctl(filep, cmd, arg);3355 mutex_unlock(&megadev_mutex);3356 3357 return ret;3358}3359 3360/**3361 * mega_m_to_n()3362 * @arg: user address3363 * @uioc: new ioctl structure3364 *3365 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl3366 * structure3367 *3368 * Converts the older mimd ioctl structure to newer NIT structure3369 */3370static int3371mega_m_to_n(void __user *arg, nitioctl_t *uioc)3372{3373 struct uioctl_t uioc_mimd;3374 char signature[8] = {0};3375 u8 opcode;3376 u8 subopcode;3377 3378 3379 /*3380 * check is the application conforms to NIT. We do not have to do much3381 * in that case.3382 * We exploit the fact that the signature is stored in the very3383 * beginning of the structure.3384 */3385 3386 if( copy_from_user(signature, arg, 7) )3387 return (-EFAULT);3388 3389 if( memcmp(signature, "MEGANIT", 7) == 0 ) {3390 3391 /*3392 * NOTE NOTE: The nit ioctl is still under flux because of3393 * change of mailbox definition, in HPE. No applications yet3394 * use this interface and let's not have applications use this3395 * interface till the new specifitions are in place.3396 */3397 return -EINVAL;3398#if 03399 if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) )3400 return (-EFAULT);3401 return 0;3402#endif3403 }3404 3405 /*3406 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t3407 *3408 * Get the user ioctl structure3409 */3410 if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) )3411 return (-EFAULT);3412 3413 3414 /*3415 * Get the opcode and subopcode for the commands3416 */3417 opcode = uioc_mimd.ui.fcs.opcode;3418 subopcode = uioc_mimd.ui.fcs.subopcode;3419 3420 switch (opcode) {3421 case 0x82:3422 3423 switch (subopcode) {3424 3425 case MEGAIOC_QDRVRVER: /* Query driver version */3426 uioc->opcode = GET_DRIVER_VER;3427 uioc->uioc_uaddr = uioc_mimd.data;3428 break;3429 3430 case MEGAIOC_QNADAP: /* Get # of adapters */3431 uioc->opcode = GET_N_ADAP;3432 uioc->uioc_uaddr = uioc_mimd.data;3433 break;3434 3435 case MEGAIOC_QADAPINFO: /* Get adapter information */3436 uioc->opcode = GET_ADAP_INFO;3437 uioc->adapno = uioc_mimd.ui.fcs.adapno;3438 uioc->uioc_uaddr = uioc_mimd.data;3439 break;3440 3441 default:3442 return(-EINVAL);3443 }3444 3445 break;3446 3447 3448 case 0x81:3449 3450 uioc->opcode = MBOX_CMD;3451 uioc->adapno = uioc_mimd.ui.fcs.adapno;3452 3453 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);3454 3455 uioc->xferlen = uioc_mimd.ui.fcs.length;3456 3457 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;3458 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;3459 3460 break;3461 3462 case 0x80:3463 3464 uioc->opcode = MBOX_CMD;3465 uioc->adapno = uioc_mimd.ui.fcs.adapno;3466 3467 memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18);3468 3469 /*3470 * Choose the xferlen bigger of input and output data3471 */3472 uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ?3473 uioc_mimd.outlen : uioc_mimd.inlen;3474 3475 if( uioc_mimd.outlen ) uioc->flags = UIOC_RD;3476 if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR;3477 3478 break;3479 3480 default:3481 return (-EINVAL);3482 3483 }3484 3485 return 0;3486}3487 3488/*3489 * mega_n_to_m()3490 * @arg: user address3491 * @mc: mailbox command3492 *3493 * Updates the status information to the application, depending on application3494 * conforms to older mimd ioctl interface or newer NIT ioctl interface3495 */3496static int3497mega_n_to_m(void __user *arg, megacmd_t *mc)3498{3499 nitioctl_t __user *uiocp;3500 megacmd_t __user *umc;3501 mega_passthru __user *upthru;3502 struct uioctl_t __user *uioc_mimd;3503 char signature[8] = {0};3504 3505 /*3506 * check is the application conforms to NIT.3507 */3508 if( copy_from_user(signature, arg, 7) )3509 return -EFAULT;3510 3511 if( memcmp(signature, "MEGANIT", 7) == 0 ) {3512 3513 uiocp = arg;3514 3515 if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) )3516 return (-EFAULT);3517 3518 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {3519 3520 umc = MBOX_P(uiocp);3521 3522 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))3523 return -EFAULT;3524 3525 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus))3526 return (-EFAULT);3527 }3528 }3529 else {3530 uioc_mimd = arg;3531 3532 if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) )3533 return (-EFAULT);3534 3535 if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {3536 3537 umc = (megacmd_t __user *)uioc_mimd->mbox;3538 3539 if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr))3540 return (-EFAULT);3541 3542 if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) )3543 return (-EFAULT);3544 }3545 }3546 3547 return 0;3548}3549 3550 3551/*3552 * MEGARAID 'FW' commands.3553 */3554 3555/**3556 * mega_is_bios_enabled()3557 * @adapter: pointer to our soft state3558 *3559 * issue command to find out if the BIOS is enabled for this controller3560 */3561static int3562mega_is_bios_enabled(adapter_t *adapter)3563{3564 struct mbox_out mbox;3565 unsigned char *raw_mbox = (u8 *)&mbox;3566 3567 memset(&mbox, 0, sizeof(mbox));3568 3569 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);3570 3571 mbox.xferaddr = (u32)adapter->buf_dma_handle;3572 3573 raw_mbox[0] = IS_BIOS_ENABLED;3574 raw_mbox[2] = GET_BIOS;3575 3576 issue_scb_block(adapter, raw_mbox);3577 3578 return *(char *)adapter->mega_buffer;3579}3580 3581 3582/**3583 * mega_enum_raid_scsi()3584 * @adapter: pointer to our soft state3585 *3586 * Find out what channels are RAID/SCSI. This information is used to3587 * differentiate the virtual channels and physical channels and to support3588 * ROMB feature and non-disk devices.3589 */3590static void3591mega_enum_raid_scsi(adapter_t *adapter)3592{3593 struct mbox_out mbox;3594 unsigned char *raw_mbox = (u8 *)&mbox;3595 int i;3596 3597 memset(&mbox, 0, sizeof(mbox));3598 3599 /*3600 * issue command to find out what channels are raid/scsi3601 */3602 raw_mbox[0] = CHNL_CLASS;3603 raw_mbox[2] = GET_CHNL_CLASS;3604 3605 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);3606 3607 mbox.xferaddr = (u32)adapter->buf_dma_handle;3608 3609 /*3610 * Non-ROMB firmware fail this command, so all channels3611 * must be shown RAID3612 */3613 adapter->mega_ch_class = 0xFF;3614 3615 if(!issue_scb_block(adapter, raw_mbox)) {3616 adapter->mega_ch_class = *((char *)adapter->mega_buffer);3617 3618 }3619 3620 for( i = 0; i < adapter->product_info.nchannels; i++ ) { 3621 if( (adapter->mega_ch_class >> i) & 0x01 ) {3622 dev_info(&adapter->dev->dev, "channel[%d] is raid\n",3623 i);3624 }3625 else {3626 dev_info(&adapter->dev->dev, "channel[%d] is scsi\n",3627 i);3628 }3629 }3630 3631 return;3632}3633 3634 3635/**3636 * mega_get_boot_drv()3637 * @adapter: pointer to our soft state3638 *3639 * Find out which device is the boot device. Note, any logical drive or any3640 * phyical device (e.g., a CDROM) can be designated as a boot device.3641 */3642static void3643mega_get_boot_drv(adapter_t *adapter)3644{3645 struct private_bios_data *prv_bios_data;3646 struct mbox_out mbox;3647 unsigned char *raw_mbox = (u8 *)&mbox;3648 u16 cksum = 0;3649 u8 *cksum_p;3650 u8 boot_pdrv;3651 int i;3652 3653 memset(&mbox, 0, sizeof(mbox));3654 3655 raw_mbox[0] = BIOS_PVT_DATA;3656 raw_mbox[2] = GET_BIOS_PVT_DATA;3657 3658 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);3659 3660 mbox.xferaddr = (u32)adapter->buf_dma_handle;3661 3662 adapter->boot_ldrv_enabled = 0;3663 adapter->boot_ldrv = 0;3664 3665 adapter->boot_pdrv_enabled = 0;3666 adapter->boot_pdrv_ch = 0;3667 adapter->boot_pdrv_tgt = 0;3668 3669 if(issue_scb_block(adapter, raw_mbox) == 0) {3670 prv_bios_data =3671 (struct private_bios_data *)adapter->mega_buffer;3672 3673 cksum = 0;3674 cksum_p = (char *)prv_bios_data;3675 for (i = 0; i < 14; i++ ) {3676 cksum += (u16)(*cksum_p++);3677 }3678 3679 if (prv_bios_data->cksum == (u16)(0-cksum) ) {3680 3681 /*3682 * If MSB is set, a physical drive is set as boot3683 * device3684 */3685 if( prv_bios_data->boot_drv & 0x80 ) {3686 adapter->boot_pdrv_enabled = 1;3687 boot_pdrv = prv_bios_data->boot_drv & 0x7F;3688 adapter->boot_pdrv_ch = boot_pdrv / 16;3689 adapter->boot_pdrv_tgt = boot_pdrv % 16;3690 }3691 else {3692 adapter->boot_ldrv_enabled = 1;3693 adapter->boot_ldrv = prv_bios_data->boot_drv;3694 }3695 }3696 }3697 3698}3699 3700/**3701 * mega_support_random_del()3702 * @adapter: pointer to our soft state3703 *3704 * Find out if this controller supports random deletion and addition of3705 * logical drives3706 */3707static int3708mega_support_random_del(adapter_t *adapter)3709{3710 struct mbox_out mbox;3711 unsigned char *raw_mbox = (u8 *)&mbox;3712 int rval;3713 3714 memset(&mbox, 0, sizeof(mbox));3715 3716 /*3717 * issue command3718 */3719 raw_mbox[0] = FC_DEL_LOGDRV;3720 raw_mbox[2] = OP_SUP_DEL_LOGDRV;3721 3722 rval = issue_scb_block(adapter, raw_mbox);3723 3724 return !rval;3725}3726 3727 3728/**3729 * mega_support_ext_cdb()3730 * @adapter: pointer to our soft state3731 *3732 * Find out if this firmware support cdblen > 103733 */3734static int3735mega_support_ext_cdb(adapter_t *adapter)3736{3737 struct mbox_out mbox;3738 unsigned char *raw_mbox = (u8 *)&mbox;3739 int rval;3740 3741 memset(&mbox, 0, sizeof(mbox));3742 /*3743 * issue command to find out if controller supports extended CDBs.3744 */3745 raw_mbox[0] = 0xA4;3746 raw_mbox[2] = 0x16;3747 3748 rval = issue_scb_block(adapter, raw_mbox);3749 3750 return !rval;3751}3752 3753 3754/**3755 * mega_del_logdrv()3756 * @adapter: pointer to our soft state3757 * @logdrv: logical drive to be deleted3758 *3759 * Delete the specified logical drive. It is the responsibility of the user3760 * app to let the OS know about this operation.3761 */3762static int3763mega_del_logdrv(adapter_t *adapter, int logdrv)3764{3765 unsigned long flags;3766 scb_t *scb;3767 int rval;3768 3769 /*3770 * Stop sending commands to the controller, queue them internally.3771 * When deletion is complete, ISR will flush the queue.3772 */3773 atomic_set(&adapter->quiescent, 1);3774 3775 /*3776 * Wait till all the issued commands are complete and there are no3777 * commands in the pending queue3778 */3779 while (atomic_read(&adapter->pend_cmds) > 0 ||3780 !list_empty(&adapter->pending_list))3781 msleep(1000); /* sleep for 1s */3782 3783 rval = mega_do_del_logdrv(adapter, logdrv);3784 3785 spin_lock_irqsave(&adapter->lock, flags);3786 3787 /*3788 * If delete operation was successful, add 0x80 to the logical drive3789 * ids for commands in the pending queue.3790 */3791 if (adapter->read_ldidmap) {3792 struct list_head *pos;3793 list_for_each(pos, &adapter->pending_list) {3794 scb = list_entry(pos, scb_t, list);3795 if (scb->pthru->logdrv < 0x80 )3796 scb->pthru->logdrv += 0x80;3797 }3798 }3799 3800 atomic_set(&adapter->quiescent, 0);3801 3802 mega_runpendq(adapter);3803 3804 spin_unlock_irqrestore(&adapter->lock, flags);3805 3806 return rval;3807}3808 3809 3810static int3811mega_do_del_logdrv(adapter_t *adapter, int logdrv)3812{3813 megacmd_t mc;3814 int rval;3815 3816 memset( &mc, 0, sizeof(megacmd_t));3817 3818 mc.cmd = FC_DEL_LOGDRV;3819 mc.opcode = OP_DEL_LOGDRV;3820 mc.subopcode = logdrv;3821 3822 rval = mega_internal_command(adapter, &mc, NULL);3823 3824 /* log this event */3825 if(rval) {3826 dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv);3827 return rval;3828 }3829 3830 /*3831 * After deleting first logical drive, the logical drives must be3832 * addressed by adding 0x80 to the logical drive id.3833 */3834 adapter->read_ldidmap = 1;3835 3836 return rval;3837}3838 3839 3840/**3841 * mega_get_max_sgl()3842 * @adapter: pointer to our soft state3843 *3844 * Find out the maximum number of scatter-gather elements supported by this3845 * version of the firmware3846 */3847static void3848mega_get_max_sgl(adapter_t *adapter)3849{3850 struct mbox_out mbox;3851 unsigned char *raw_mbox = (u8 *)&mbox;3852 3853 memset(&mbox, 0, sizeof(mbox));3854 3855 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);3856 3857 mbox.xferaddr = (u32)adapter->buf_dma_handle;3858 3859 raw_mbox[0] = MAIN_MISC_OPCODE;3860 raw_mbox[2] = GET_MAX_SG_SUPPORT;3861 3862 3863 if( issue_scb_block(adapter, raw_mbox) ) {3864 /*3865 * f/w does not support this command. Choose the default value3866 */3867 adapter->sglen = MIN_SGLIST;3868 }3869 else {3870 adapter->sglen = *((char *)adapter->mega_buffer);3871 3872 /*3873 * Make sure this is not more than the resources we are3874 * planning to allocate3875 */3876 if ( adapter->sglen > MAX_SGLIST )3877 adapter->sglen = MAX_SGLIST;3878 }3879 3880 return;3881}3882 3883 3884/**3885 * mega_support_cluster()3886 * @adapter: pointer to our soft state3887 *3888 * Find out if this firmware support cluster calls.3889 */3890static int3891mega_support_cluster(adapter_t *adapter)3892{3893 struct mbox_out mbox;3894 unsigned char *raw_mbox = (u8 *)&mbox;3895 3896 memset(&mbox, 0, sizeof(mbox));3897 3898 memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE);3899 3900 mbox.xferaddr = (u32)adapter->buf_dma_handle;3901 3902 /*3903 * Try to get the initiator id. This command will succeed iff the3904 * clustering is available on this HBA.3905 */3906 raw_mbox[0] = MEGA_GET_TARGET_ID;3907 3908 if( issue_scb_block(adapter, raw_mbox) == 0 ) {3909 3910 /*3911 * Cluster support available. Get the initiator target id.3912 * Tell our id to mid-layer too.3913 */3914 adapter->this_id = *(u32 *)adapter->mega_buffer;3915 adapter->host->this_id = adapter->this_id;3916 3917 return 1;3918 }3919 3920 return 0;3921}3922 3923#ifdef CONFIG_PROC_FS3924/**3925 * mega_adapinq()3926 * @adapter: pointer to our soft state3927 * @dma_handle: DMA address of the buffer3928 *3929 * Issue internal commands while interrupts are available.3930 * We only issue direct mailbox commands from within the driver. ioctl()3931 * interface using these routines can issue passthru commands.3932 */3933static int3934mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle)3935{3936 megacmd_t mc;3937 3938 memset(&mc, 0, sizeof(megacmd_t));3939 3940 if( adapter->flag & BOARD_40LD ) {3941 mc.cmd = FC_NEW_CONFIG;3942 mc.opcode = NC_SUBOP_ENQUIRY3;3943 mc.subopcode = ENQ3_GET_SOLICITED_FULL;3944 }3945 else {3946 mc.cmd = MEGA_MBOXCMD_ADPEXTINQ;3947 }3948 3949 mc.xferaddr = (u32)dma_handle;3950 3951 if ( mega_internal_command(adapter, &mc, NULL) != 0 ) {3952 return -1;3953 }3954 3955 return 0;3956}3957 3958 3959/**3960 * mega_internal_dev_inquiry()3961 * @adapter: pointer to our soft state3962 * @ch: channel for this device3963 * @tgt: ID of this device3964 * @buf_dma_handle: DMA address of the buffer3965 *3966 * Issue the scsi inquiry for the specified device.3967 */3968static int3969mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt,3970 dma_addr_t buf_dma_handle)3971{3972 mega_passthru *pthru;3973 dma_addr_t pthru_dma_handle;3974 megacmd_t mc;3975 int rval;3976 struct pci_dev *pdev;3977 3978 3979 /*3980 * For all internal commands, the buffer must be allocated in <4GB3981 * address range3982 */3983 if( make_local_pdev(adapter, &pdev) != 0 ) return -1;3984 3985 pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru),3986 &pthru_dma_handle, GFP_KERNEL);3987 3988 if( pthru == NULL ) {3989 free_local_pdev(pdev);3990 return -1;3991 }3992 3993 pthru->timeout = 2;3994 pthru->ars = 1;3995 pthru->reqsenselen = 14;3996 pthru->islogical = 0;3997 3998 pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch;3999 4000 pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt;4001 4002 pthru->cdblen = 6;4003 4004 pthru->cdb[0] = INQUIRY;4005 pthru->cdb[1] = 0;4006 pthru->cdb[2] = 0;4007 pthru->cdb[3] = 0;4008 pthru->cdb[4] = 255;4009 pthru->cdb[5] = 0;4010 4011 4012 pthru->dataxferaddr = (u32)buf_dma_handle;4013 pthru->dataxferlen = 256;4014 4015 memset(&mc, 0, sizeof(megacmd_t));4016 4017 mc.cmd = MEGA_MBOXCMD_PASSTHRU;4018 mc.xferaddr = (u32)pthru_dma_handle;4019 4020 rval = mega_internal_command(adapter, &mc, pthru);4021 4022 dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru,4023 pthru_dma_handle);4024 4025 free_local_pdev(pdev);4026 4027 return rval;4028}4029#endif4030 4031/**4032 * mega_internal_command()4033 * @adapter: pointer to our soft state4034 * @mc: the mailbox command4035 * @pthru: Passthru structure for DCDB commands4036 *4037 * Issue the internal commands in interrupt mode.4038 * The last argument is the address of the passthru structure if the command4039 * to be fired is a passthru command4040 *4041 * Note: parameter 'pthru' is null for non-passthru commands.4042 */4043static int4044mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)4045{4046 unsigned long flags;4047 scb_t *scb;4048 int rval;4049 4050 /*4051 * The internal commands share one command id and hence are4052 * serialized. This is so because we want to reserve maximum number of4053 * available command ids for the I/O commands.4054 */4055 mutex_lock(&adapter->int_mtx);4056 4057 scb = &adapter->int_scb;4058 memset(scb, 0, sizeof(scb_t));4059 4060 scb->idx = CMDID_INT_CMDS;4061 scb->state |= SCB_ACTIVE | SCB_PENDQ;4062 4063 memcpy(scb->raw_mbox, mc, sizeof(megacmd_t));4064 4065 /*4066 * Is it a passthru command4067 */4068 if (mc->cmd == MEGA_MBOXCMD_PASSTHRU)4069 scb->pthru = pthru;4070 4071 spin_lock_irqsave(&adapter->lock, flags);4072 list_add_tail(&scb->list, &adapter->pending_list);4073 /*4074 * Check if the HBA is in quiescent state, e.g., during a4075 * delete logical drive opertion. If it is, don't run4076 * the pending_list.4077 */4078 if (atomic_read(&adapter->quiescent) == 0)4079 mega_runpendq(adapter);4080 spin_unlock_irqrestore(&adapter->lock, flags);4081 4082 wait_for_completion(&adapter->int_waitq);4083 4084 mc->status = rval = adapter->int_status;4085 4086 /*4087 * Print a debug message for all failed commands. Applications can use4088 * this information.4089 */4090 if (rval && trace_level) {4091 dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n",4092 mc->cmd, mc->opcode, mc->subopcode, rval);4093 }4094 4095 mutex_unlock(&adapter->int_mtx);4096 return rval;4097}4098 4099static const struct scsi_host_template megaraid_template = {4100 .module = THIS_MODULE,4101 .name = "MegaRAID",4102 .proc_name = "megaraid_legacy",4103 .info = megaraid_info,4104 .queuecommand = megaraid_queue, 4105 .bios_param = megaraid_biosparam,4106 .max_sectors = MAX_SECTORS_PER_IO,4107 .can_queue = MAX_COMMANDS,4108 .this_id = DEFAULT_INITIATOR_ID,4109 .sg_tablesize = MAX_SGLIST,4110 .cmd_per_lun = DEF_CMD_PER_LUN,4111 .eh_abort_handler = megaraid_abort,4112 .eh_host_reset_handler = megaraid_reset,4113 .no_write_same = 1,4114 .cmd_size = sizeof(struct megaraid_cmd_priv),4115};4116 4117static int4118megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)4119{4120 struct Scsi_Host *host;4121 adapter_t *adapter;4122 unsigned long mega_baseport, tbase, flag = 0;4123 u16 subsysid, subsysvid;4124 u8 pci_bus, pci_dev_func;4125 int irq, i, j;4126 int error = -ENODEV;4127 4128 if (hba_count >= MAX_CONTROLLERS)4129 goto out;4130 4131 if (pci_enable_device(pdev))4132 goto out;4133 pci_set_master(pdev);4134 4135 pci_bus = pdev->bus->number;4136 pci_dev_func = pdev->devfn;4137 4138 /*4139 * The megaraid3 stuff reports the ID of the Intel part which is not4140 * remotely specific to the megaraid4141 */4142 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {4143 u16 magic;4144 /*4145 * Don't fall over the Compaq management cards using the same4146 * PCI identifier4147 */4148 if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ &&4149 pdev->subsystem_device == 0xC000)4150 goto out_disable_device;4151 /* Now check the magic signature byte */4152 pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic);4153 if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE)4154 goto out_disable_device;4155 /* Ok it is probably a megaraid */4156 }4157 4158 /*4159 * For these vendor and device ids, signature offsets are not4160 * valid and 64 bit is implicit4161 */4162 if (id->driver_data & BOARD_64BIT)4163 flag |= BOARD_64BIT;4164 else {4165 u32 magic64;4166 4167 pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64);4168 if (magic64 == HBA_SIGNATURE_64BIT)4169 flag |= BOARD_64BIT;4170 }4171 4172 subsysvid = pdev->subsystem_vendor;4173 subsysid = pdev->subsystem_device;4174 4175 dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n",4176 id->vendor, id->device);4177 4178 /* Read the base port and IRQ from PCI */4179 mega_baseport = pci_resource_start(pdev, 0);4180 irq = pdev->irq;4181 4182 tbase = mega_baseport;4183 if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) {4184 flag |= BOARD_MEMMAP;4185 4186 if (!request_mem_region(mega_baseport, 128, "megaraid")) {4187 dev_warn(&pdev->dev, "mem region busy!\n");4188 goto out_disable_device;4189 }4190 4191 mega_baseport = (unsigned long)ioremap(mega_baseport, 128);4192 if (!mega_baseport) {4193 dev_warn(&pdev->dev, "could not map hba memory\n");4194 goto out_release_region;4195 }4196 } else {4197 flag |= BOARD_IOMAP;4198 mega_baseport += 0x10;4199 4200 if (!request_region(mega_baseport, 16, "megaraid"))4201 goto out_disable_device;4202 }4203 4204 /* Initialize SCSI Host structure */4205 host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t));4206 if (!host)4207 goto out_iounmap;4208 4209 adapter = (adapter_t *)host->hostdata;4210 memset(adapter, 0, sizeof(adapter_t));4211 4212 dev_notice(&pdev->dev,4213 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",4214 host->host_no, mega_baseport, irq);4215 4216 adapter->base = mega_baseport;4217 if (flag & BOARD_MEMMAP)4218 adapter->mmio_base = (void __iomem *) mega_baseport;4219 4220 INIT_LIST_HEAD(&adapter->free_list);4221 INIT_LIST_HEAD(&adapter->pending_list);4222 INIT_LIST_HEAD(&adapter->completed_list);4223 4224 adapter->flag = flag;4225 spin_lock_init(&adapter->lock);4226 4227 host->cmd_per_lun = max_cmd_per_lun;4228 host->max_sectors = max_sectors_per_io;4229 4230 adapter->dev = pdev;4231 adapter->host = host;4232 4233 adapter->host->irq = irq;4234 4235 if (flag & BOARD_MEMMAP)4236 adapter->host->base = tbase;4237 else {4238 adapter->host->io_port = tbase;4239 adapter->host->n_io_port = 16;4240 }4241 4242 adapter->host->unique_id = (pci_bus << 8) | pci_dev_func;4243 4244 /*4245 * Allocate buffer to issue internal commands.4246 */4247 adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev,4248 MEGA_BUFFER_SIZE,4249 &adapter->buf_dma_handle,4250 GFP_KERNEL);4251 if (!adapter->mega_buffer) {4252 dev_warn(&pdev->dev, "out of RAM\n");4253 goto out_host_put;4254 }4255 4256 adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t),4257 GFP_KERNEL);4258 if (!adapter->scb_list) {4259 dev_warn(&pdev->dev, "out of RAM\n");4260 goto out_free_cmd_buffer;4261 }4262 4263 if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ?4264 megaraid_isr_memmapped : megaraid_isr_iomapped,4265 IRQF_SHARED, "megaraid", adapter)) {4266 dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq);4267 goto out_free_scb_list;4268 }4269 4270 if (mega_setup_mailbox(adapter))4271 goto out_free_irq;4272 4273 if (mega_query_adapter(adapter))4274 goto out_free_mbox;4275 4276 /*4277 * Have checks for some buggy f/w4278 */4279 if ((subsysid == 0x1111) && (subsysvid == 0x1111)) {4280 /*4281 * Which firmware4282 */4283 if (!strcmp(adapter->fw_version, "3.00") ||4284 !strcmp(adapter->fw_version, "3.01")) {4285 4286 dev_warn(&pdev->dev,4287 "Your card is a Dell PERC "4288 "2/SC RAID controller with "4289 "firmware\nmegaraid: 3.00 or 3.01. "4290 "This driver is known to have "4291 "corruption issues\nmegaraid: with "4292 "those firmware versions on this "4293 "specific card. In order\nmegaraid: "4294 "to protect your data, please upgrade "4295 "your firmware to version\nmegaraid: "4296 "3.10 or later, available from the "4297 "Dell Technical Support web\n"4298 "megaraid: site at\nhttp://support."4299 "dell.com/us/en/filelib/download/"4300 "index.asp?fileid=2940\n"4301 );4302 }4303 }4304 4305 /*4306 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with4307 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit4308 * support, since this firmware cannot handle 64 bit4309 * addressing4310 */4311 if ((subsysvid == PCI_VENDOR_ID_HP) &&4312 ((subsysid == 0x60E7) || (subsysid == 0x60E8))) {4313 /*4314 * which firmware4315 */4316 if (!strcmp(adapter->fw_version, "H01.07") ||4317 !strcmp(adapter->fw_version, "H01.08") ||4318 !strcmp(adapter->fw_version, "H01.09") ) {4319 dev_warn(&pdev->dev,4320 "Firmware H.01.07, "4321 "H.01.08, and H.01.09 on 1M/2M "4322 "controllers\n"4323 "do not support 64 bit "4324 "addressing.\nDISABLING "4325 "64 bit support.\n");4326 adapter->flag &= ~BOARD_64BIT;4327 }4328 }4329 4330 if (mega_is_bios_enabled(adapter))4331 mega_hbas[hba_count].is_bios_enabled = 1;4332 mega_hbas[hba_count].hostdata_addr = adapter;4333 4334 /*4335 * Find out which channel is raid and which is scsi. This is4336 * for ROMB support.4337 */4338 mega_enum_raid_scsi(adapter);4339 4340 /*4341 * Find out if a logical drive is set as the boot drive. If4342 * there is one, will make that as the first logical drive.4343 * ROMB: Do we have to boot from a physical drive. Then all4344 * the physical drives would appear before the logical disks.4345 * Else, all the physical drives would be exported to the mid4346 * layer after logical drives.4347 */4348 mega_get_boot_drv(adapter);4349 4350 if (adapter->boot_pdrv_enabled) {4351 j = adapter->product_info.nchannels;4352 for( i = 0; i < j; i++ )4353 adapter->logdrv_chan[i] = 0;4354 for( i = j; i < NVIRT_CHAN + j; i++ )4355 adapter->logdrv_chan[i] = 1;4356 } else {4357 for (i = 0; i < NVIRT_CHAN; i++)4358 adapter->logdrv_chan[i] = 1;4359 for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++)4360 adapter->logdrv_chan[i] = 0;4361 adapter->mega_ch_class <<= NVIRT_CHAN;4362 }4363 4364 /*4365 * Do we support random deletion and addition of logical4366 * drives4367 */4368 adapter->read_ldidmap = 0; /* set it after first logdrv4369 delete cmd */4370 adapter->support_random_del = mega_support_random_del(adapter);4371 4372 /* Initialize SCBs */4373 if (mega_init_scb(adapter))4374 goto out_free_mbox;4375 4376 /*4377 * Reset the pending commands counter4378 */4379 atomic_set(&adapter->pend_cmds, 0);4380 4381 /*4382 * Reset the adapter quiescent flag4383 */4384 atomic_set(&adapter->quiescent, 0);4385 4386 hba_soft_state[hba_count] = adapter;4387 4388 /*4389 * Fill in the structure which needs to be passed back to the4390 * application when it does an ioctl() for controller related4391 * information.4392 */4393 i = hba_count;4394 4395 mcontroller[i].base = mega_baseport;4396 mcontroller[i].irq = irq;4397 mcontroller[i].numldrv = adapter->numldrv;4398 mcontroller[i].pcibus = pci_bus;4399 mcontroller[i].pcidev = id->device;4400 mcontroller[i].pcifun = PCI_FUNC (pci_dev_func);4401 mcontroller[i].pciid = -1;4402 mcontroller[i].pcivendor = id->vendor;4403 mcontroller[i].pcislot = PCI_SLOT(pci_dev_func);4404 mcontroller[i].uid = (pci_bus << 8) | pci_dev_func;4405 4406 4407 /* Set the Mode of addressing to 64 bit if we can */4408 if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) {4409 dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));4410 adapter->has_64bit_addr = 1;4411 } else {4412 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));4413 adapter->has_64bit_addr = 0;4414 }4415 4416 mutex_init(&adapter->int_mtx);4417 init_completion(&adapter->int_waitq);4418 4419 adapter->this_id = DEFAULT_INITIATOR_ID;4420 adapter->host->this_id = DEFAULT_INITIATOR_ID;4421 4422#if MEGA_HAVE_CLUSTERING4423 /*4424 * Is cluster support enabled on this controller4425 * Note: In a cluster the HBAs ( the initiators ) will have4426 * different target IDs and we cannot assume it to be 7. Call4427 * to mega_support_cluster() will get the target ids also if4428 * the cluster support is available4429 */4430 adapter->has_cluster = mega_support_cluster(adapter);4431 if (adapter->has_cluster) {4432 dev_notice(&pdev->dev,4433 "Cluster driver, initiator id:%d\n",4434 adapter->this_id);4435 }4436#endif4437 4438 pci_set_drvdata(pdev, host);4439 4440 mega_create_proc_entry(hba_count, mega_proc_dir_entry);4441 4442 error = scsi_add_host(host, &pdev->dev);4443 if (error)4444 goto out_free_mbox;4445 4446 scsi_scan_host(host);4447 hba_count++;4448 return 0;4449 4450 out_free_mbox:4451 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),4452 adapter->una_mbox64, adapter->una_mbox64_dma);4453 out_free_irq:4454 free_irq(adapter->host->irq, adapter);4455 out_free_scb_list:4456 kfree(adapter->scb_list);4457 out_free_cmd_buffer:4458 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,4459 adapter->mega_buffer, adapter->buf_dma_handle);4460 out_host_put:4461 scsi_host_put(host);4462 out_iounmap:4463 if (flag & BOARD_MEMMAP)4464 iounmap((void *)mega_baseport);4465 out_release_region:4466 if (flag & BOARD_MEMMAP)4467 release_mem_region(tbase, 128);4468 else4469 release_region(mega_baseport, 16);4470 out_disable_device:4471 pci_disable_device(pdev);4472 out:4473 return error;4474}4475 4476static void4477__megaraid_shutdown(adapter_t *adapter)4478{4479 u_char raw_mbox[sizeof(struct mbox_out)];4480 mbox_t *mbox = (mbox_t *)raw_mbox;4481 int i;4482 4483 /* Flush adapter cache */4484 memset(&mbox->m_out, 0, sizeof(raw_mbox));4485 raw_mbox[0] = FLUSH_ADAPTER;4486 4487 free_irq(adapter->host->irq, adapter);4488 4489 /* Issue a blocking (interrupts disabled) command to the card */4490 issue_scb_block(adapter, raw_mbox);4491 4492 /* Flush disks cache */4493 memset(&mbox->m_out, 0, sizeof(raw_mbox));4494 raw_mbox[0] = FLUSH_SYSTEM;4495 4496 /* Issue a blocking (interrupts disabled) command to the card */4497 issue_scb_block(adapter, raw_mbox);4498 4499 if (atomic_read(&adapter->pend_cmds) > 0)4500 dev_warn(&adapter->dev->dev, "pending commands!!\n");4501 4502 /*4503 * Have a delibrate delay to make sure all the caches are4504 * actually flushed.4505 */4506 for (i = 0; i <= 10; i++)4507 mdelay(1000);4508}4509 4510static void4511megaraid_remove_one(struct pci_dev *pdev)4512{4513 struct Scsi_Host *host = pci_get_drvdata(pdev);4514 adapter_t *adapter = (adapter_t *)host->hostdata;4515 char buf[12] = { 0 };4516 4517 scsi_remove_host(host);4518 4519 __megaraid_shutdown(adapter);4520 4521 /* Free our resources */4522 if (adapter->flag & BOARD_MEMMAP) {4523 iounmap((void *)adapter->base);4524 release_mem_region(adapter->host->base, 128);4525 } else4526 release_region(adapter->base, 16);4527 4528 mega_free_sgl(adapter);4529 4530 sprintf(buf, "hba%d", adapter->host->host_no);4531 remove_proc_subtree(buf, mega_proc_dir_entry);4532 4533 dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE,4534 adapter->mega_buffer, adapter->buf_dma_handle);4535 kfree(adapter->scb_list);4536 dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t),4537 adapter->una_mbox64, adapter->una_mbox64_dma);4538 4539 scsi_host_put(host);4540 pci_disable_device(pdev);4541 4542 hba_count--;4543}4544 4545static void4546megaraid_shutdown(struct pci_dev *pdev)4547{4548 struct Scsi_Host *host = pci_get_drvdata(pdev);4549 adapter_t *adapter = (adapter_t *)host->hostdata;4550 4551 __megaraid_shutdown(adapter);4552}4553 4554static struct pci_device_id megaraid_pci_tbl[] = {4555 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID,4556 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},4557 {PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2,4558 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},4559 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3,4560 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},4561 {0,}4562};4563MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl);4564 4565static struct pci_driver megaraid_pci_driver = {4566 .name = "megaraid_legacy",4567 .id_table = megaraid_pci_tbl,4568 .probe = megaraid_probe_one,4569 .remove = megaraid_remove_one,4570 .shutdown = megaraid_shutdown,4571};4572 4573static int __init megaraid_init(void)4574{4575 int error;4576 4577 if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN))4578 max_cmd_per_lun = MAX_CMD_PER_LUN;4579 if (max_mbox_busy_wait > MBOX_BUSY_WAIT)4580 max_mbox_busy_wait = MBOX_BUSY_WAIT;4581 4582#ifdef CONFIG_PROC_FS4583 mega_proc_dir_entry = proc_mkdir("megaraid", NULL);4584 if (!mega_proc_dir_entry) {4585 printk(KERN_WARNING4586 "megaraid: failed to create megaraid root\n");4587 }4588#endif4589 error = pci_register_driver(&megaraid_pci_driver);4590 if (error) {4591#ifdef CONFIG_PROC_FS4592 remove_proc_entry("megaraid", NULL);4593#endif4594 return error;4595 }4596 4597 /*4598 * Register the driver as a character device, for applications4599 * to access it for ioctls.4600 * First argument (major) to register_chrdev implies a dynamic4601 * major number allocation.4602 */4603 major = register_chrdev(0, "megadev_legacy", &megadev_fops);4604 if (major < 0) {4605 printk(KERN_WARNING4606 "megaraid: failed to register char device\n");4607 }4608 4609 return 0;4610}4611 4612static void __exit megaraid_exit(void)4613{4614 /*4615 * Unregister the character device interface to the driver.4616 */4617 unregister_chrdev(major, "megadev_legacy");4618 4619 pci_unregister_driver(&megaraid_pci_driver);4620 4621#ifdef CONFIG_PROC_FS4622 remove_proc_entry("megaraid", NULL);4623#endif4624}4625 4626module_init(megaraid_init);4627module_exit(megaraid_exit);4628 4629/* vi: set ts=8 sw=8 tw=78: */4630