+++ /dev/null
-/*
- * ATAPI CD-ROM driver.
- *
- * Copyright (C) 1994-1996 Scott Snyder <snyder@fnald0.fnal.gov>
- * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org>
- * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de>
- * Copyright (C) 2005, 2007-2009 Bartlomiej Zolnierkiewicz
- *
- * May be copied or modified under the terms of the GNU General Public
- * License. See linux/COPYING for more information.
- *
- * See Documentation/cdrom/ide-cd.rst for usage information.
- *
- * Suggestions are welcome. Patches that work are more welcome though. ;-)
- *
- * Documentation:
- * Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards.
- *
- * For historical changelog please see:
- * Documentation/ide/ChangeLog.ide-cd.1994-2004
- */
-
-#define DRV_NAME "ide-cd"
-#define PFX DRV_NAME ": "
-
-#define IDECD_VERSION "5.00"
-
-#include <linux/compat.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched/task_stack.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/errno.h>
-#include <linux/cdrom.h>
-#include <linux/ide.h>
-#include <linux/completion.h>
-#include <linux/mutex.h>
-#include <linux/bcd.h>
-
-/* For SCSI -> ATAPI command conversion */
-#include <scsi/scsi.h>
-
-#include <linux/io.h>
-#include <asm/byteorder.h>
-#include <linux/uaccess.h>
-#include <asm/unaligned.h>
-
-#include "ide-cd.h"
-
-static DEFINE_MUTEX(ide_cd_mutex);
-static DEFINE_MUTEX(idecd_ref_mutex);
-
-static void ide_cd_release(struct device *);
-
-static struct cdrom_info *ide_cd_get(struct gendisk *disk)
-{
- struct cdrom_info *cd = NULL;
-
- mutex_lock(&idecd_ref_mutex);
- cd = ide_drv_g(disk, cdrom_info);
- if (cd) {
- if (ide_device_get(cd->drive))
- cd = NULL;
- else
- get_device(&cd->dev);
-
- }
- mutex_unlock(&idecd_ref_mutex);
- return cd;
-}
-
-static void ide_cd_put(struct cdrom_info *cd)
-{
- ide_drive_t *drive = cd->drive;
-
- mutex_lock(&idecd_ref_mutex);
- put_device(&cd->dev);
- ide_device_put(drive);
- mutex_unlock(&idecd_ref_mutex);
-}
-
-/*
- * Generic packet command support and error handling routines.
- */
-
-/* Mark that we've seen a media change and invalidate our internal buffers. */
-static void cdrom_saw_media_change(ide_drive_t *drive)
-{
- drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
- drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID;
-}
-
-static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
-{
- struct request_sense *sense = &drive->sense_data;
- int log = 0;
-
- if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
- return 0;
-
- ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
-
- switch (sense->sense_key) {
- case NO_SENSE:
- case RECOVERED_ERROR:
- break;
- case NOT_READY:
- /*
- * don't care about tray state messages for e.g. capacity
- * commands or in-progress or becoming ready
- */
- if (sense->asc == 0x3a || sense->asc == 0x04)
- break;
- log = 1;
- break;
- case ILLEGAL_REQUEST:
- /*
- * don't log START_STOP unit with LoEj set, since we cannot
- * reliably check if drive can auto-close
- */
- if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24)
- break;
- log = 1;
- break;
- case UNIT_ATTENTION:
- /*
- * Make good and sure we've seen this potential media change.
- * Some drives (i.e. Creative) fail to present the correct sense
- * key in the error register.
- */
- cdrom_saw_media_change(drive);
- break;
- default:
- log = 1;
- break;
- }
- return log;
-}
-
-static void cdrom_analyze_sense_data(ide_drive_t *drive,
- struct request *failed_command)
-{
- struct request_sense *sense = &drive->sense_data;
- struct cdrom_info *info = drive->driver_data;
- unsigned long sector;
- unsigned long bio_sectors;
-
- ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x",
- sense->error_code, sense->sense_key);
-
- if (failed_command)
- ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x",
- failed_command->cmd[0]);
-
- if (!cdrom_log_sense(drive, failed_command))
- return;
-
- /*
- * If a read toc is executed for a CD-R or CD-RW medium where the first
- * toc has not been recorded yet, it will fail with 05/24/00 (which is a
- * confusing error)
- */
- if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP)
- if (sense->sense_key == 0x05 && sense->asc == 0x24)
- return;
-
- /* current error */
- if (sense->error_code == 0x70) {
- switch (sense->sense_key) {
- case MEDIUM_ERROR:
- case VOLUME_OVERFLOW:
- case ILLEGAL_REQUEST:
- if (!sense->valid)
- break;
- if (failed_command == NULL ||
- blk_rq_is_passthrough(failed_command))
- break;
- sector = (sense->information[0] << 24) |
- (sense->information[1] << 16) |
- (sense->information[2] << 8) |
- (sense->information[3]);
-
- if (queue_logical_block_size(drive->queue) == 2048)
- /* device sector size is 2K */
- sector <<= 2;
-
- bio_sectors = max(bio_sectors(failed_command->bio), 4U);
- sector &= ~(bio_sectors - 1);
-
- /*
- * The SCSI specification allows for the value
- * returned by READ CAPACITY to be up to 75 2K
- * sectors past the last readable block.
- * Therefore, if we hit a medium error within the
- * last 75 2K sectors, we decrease the saved size
- * value.
- */
- if (sector < get_capacity(info->disk) &&
- drive->probed_capacity - sector < 4 * 75)
- set_capacity(info->disk, sector);
- }
- }
-
- ide_cd_log_error(drive->name, failed_command, sense);
-}
-
-static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
-{
- /*
- * For ATA_PRIV_SENSE, "ide_req(rq)->special" points to the original
- * failed request. Also, the sense data should be read
- * directly from rq which might be different from the original
- * sense buffer if it got copied during mapping.
- */
- struct request *failed = ide_req(rq)->special;
- void *sense = bio_data(rq->bio);
-
- if (failed) {
- /*
- * Sense is always read into drive->sense_data, copy back to the
- * original request.
- */
- memcpy(scsi_req(failed)->sense, sense, 18);
- scsi_req(failed)->sense_len = scsi_req(rq)->sense_len;
- cdrom_analyze_sense_data(drive, failed);
-
- if (ide_end_rq(drive, failed, BLK_STS_IOERR, blk_rq_bytes(failed)))
- BUG();
- } else
- cdrom_analyze_sense_data(drive, NULL);
-}
-
-
-/*
- * Allow the drive 5 seconds to recover; some devices will return NOT_READY
- * while flushing data from cache.
- *
- * returns: 0 failed (write timeout expired)
- * 1 success
- */
-static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
-{
-
- struct cdrom_info *info = drive->driver_data;
-
- if (!scsi_req(rq)->result)
- info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
-
- scsi_req(rq)->result = 1;
-
- if (time_after(jiffies, info->write_timeout))
- return 0;
- else {
- /*
- * take a breather
- */
- blk_mq_requeue_request(rq, false);
- blk_mq_delay_kick_requeue_list(drive->queue, 1);
- return 1;
- }
-}
-
-static void ide_cd_free_sense(ide_drive_t *drive)
-{
- if (!drive->sense_rq)
- return;
-
- blk_mq_free_request(drive->sense_rq);
- drive->sense_rq = NULL;
- drive->sense_rq_armed = false;
-}
-
-/**
- * Returns:
- * 0: if the request should be continued.
- * 1: if the request will be going through error recovery.
- * 2: if the request should be ended.
- */
-static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct request *rq = hwif->rq;
- int err, sense_key, do_end_request = 0;
-
- /* get the IDE error register */
- err = ide_read_error(drive);
- sense_key = err >> 4;
-
- ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, "
- "stat 0x%x",
- rq->cmd[0], rq->cmd_type, err, stat);
-
- if (ata_sense_request(rq)) {
- /*
- * We got an error trying to get sense info from the drive
- * (probably while trying to recover from a former error).
- * Just give up.
- */
- rq->rq_flags |= RQF_FAILED;
- return 2;
- }
-
- /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */
- if (blk_rq_is_scsi(rq) && !scsi_req(rq)->result)
- scsi_req(rq)->result = SAM_STAT_CHECK_CONDITION;
-
- if (blk_noretry_request(rq))
- do_end_request = 1;
-
- switch (sense_key) {
- case NOT_READY:
- if (req_op(rq) == REQ_OP_WRITE) {
- if (ide_cd_breathe(drive, rq))
- return 1;
- } else {
- cdrom_saw_media_change(drive);
-
- if (!blk_rq_is_passthrough(rq) &&
- !(rq->rq_flags & RQF_QUIET))
- printk(KERN_ERR PFX "%s: tray open\n",
- drive->name);
- }
- do_end_request = 1;
- break;
- case UNIT_ATTENTION:
- cdrom_saw_media_change(drive);
-
- if (blk_rq_is_passthrough(rq))
- return 0;
-
- /*
- * Arrange to retry the request but be sure to give up if we've
- * retried too many times.
- */
- if (++scsi_req(rq)->result > ERROR_MAX)
- do_end_request = 1;
- break;
- case ILLEGAL_REQUEST:
- /*
- * Don't print error message for this condition -- SFF8090i
- * indicates that 5/24/00 is the correct response to a request
- * to close the tray if the drive doesn't have that capability.
- *
- * cdrom_log_sense() knows this!
- */
- if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT)
- break;
- fallthrough;
- case DATA_PROTECT:
- /*
- * No point in retrying after an illegal request or data
- * protect error.
- */
- if (!(rq->rq_flags & RQF_QUIET))
- ide_dump_status(drive, "command error", stat);
- do_end_request = 1;
- break;
- case MEDIUM_ERROR:
- /*
- * No point in re-trying a zillion times on a bad sector.
- * If we got here the error is not correctable.
- */
- if (!(rq->rq_flags & RQF_QUIET))
- ide_dump_status(drive, "media error "
- "(bad sector)", stat);
- do_end_request = 1;
- break;
- case BLANK_CHECK:
- /* disk appears blank? */
- if (!(rq->rq_flags & RQF_QUIET))
- ide_dump_status(drive, "media error (blank)",
- stat);
- do_end_request = 1;
- break;
- default:
- if (blk_rq_is_passthrough(rq))
- break;
- if (err & ~ATA_ABORTED) {
- /* go to the default handler for other errors */
- ide_error(drive, "cdrom_decode_status", stat);
- return 1;
- } else if (++scsi_req(rq)->result > ERROR_MAX)
- /* we've racked up too many retries, abort */
- do_end_request = 1;
- }
-
- if (blk_rq_is_passthrough(rq)) {
- rq->rq_flags |= RQF_FAILED;
- do_end_request = 1;
- }
-
- /*
- * End a request through request sense analysis when we have sense data.
- * We need this in order to perform end of media processing.
- */
- if (do_end_request)
- goto end_request;
-
- /* if we got a CHECK_CONDITION status, queue a request sense command */
- if (stat & ATA_ERR)
- return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
- return 1;
-
-end_request:
- if (stat & ATA_ERR) {
- hwif->rq = NULL;
- return ide_queue_sense_rq(drive, rq) ? 2 : 1;
- } else
- return 2;
-}
-
-static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
-{
- struct request *rq = cmd->rq;
-
- ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]);
-
- /*
- * Some of the trailing request sense fields are optional,
- * and some drives don't send them. Sigh.
- */
- if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE &&
- cmd->nleft > 0 && cmd->nleft <= 5)
- cmd->nleft = 0;
-}
-
-int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
- int write, void *buffer, unsigned *bufflen,
- struct scsi_sense_hdr *sshdr, int timeout,
- req_flags_t rq_flags)
-{
- struct cdrom_info *info = drive->driver_data;
- struct scsi_sense_hdr local_sshdr;
- int retries = 10;
- bool failed;
-
- ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
- "rq_flags: 0x%x",
- cmd[0], write, timeout, rq_flags);
-
- if (!sshdr)
- sshdr = &local_sshdr;
-
- /* start of retry loop */
- do {
- struct request *rq;
- int error;
- bool delay = false;
-
- rq = blk_get_request(drive->queue,
- write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0);
- memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
- ide_req(rq)->type = ATA_PRIV_PC;
- rq->rq_flags |= rq_flags;
- rq->timeout = timeout;
- if (buffer) {
- error = blk_rq_map_kern(drive->queue, rq, buffer,
- *bufflen, GFP_NOIO);
- if (error) {
- blk_put_request(rq);
- return error;
- }
- }
-
- blk_execute_rq(info->disk, rq, 0);
- error = scsi_req(rq)->result ? -EIO : 0;
-
- if (buffer)
- *bufflen = scsi_req(rq)->resid_len;
- scsi_normalize_sense(scsi_req(rq)->sense,
- scsi_req(rq)->sense_len, sshdr);
-
- /*
- * FIXME: we should probably abort/retry or something in case of
- * failure.
- */
- failed = (rq->rq_flags & RQF_FAILED) != 0;
- if (failed) {
- /*
- * The request failed. Retry if it was due to a unit
- * attention status (usually means media was changed).
- */
- if (sshdr->sense_key == UNIT_ATTENTION)
- cdrom_saw_media_change(drive);
- else if (sshdr->sense_key == NOT_READY &&
- sshdr->asc == 4 && sshdr->ascq != 4) {
- /*
- * The drive is in the process of loading
- * a disk. Retry, but wait a little to give
- * the drive time to complete the load.
- */
- delay = true;
- } else {
- /* otherwise, don't retry */
- retries = 0;
- }
- --retries;
- }
- blk_put_request(rq);
- if (delay)
- ssleep(2);
- } while (failed && retries >= 0);
-
- /* return an error if the command failed */
- return failed ? -EIO : 0;
-}
-
-/*
- * returns true if rq has been completed
- */
-static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
-{
- unsigned int nr_bytes = cmd->nbytes - cmd->nleft;
-
- if (cmd->tf_flags & IDE_TFLAG_WRITE)
- nr_bytes -= cmd->last_xfer_len;
-
- if (nr_bytes > 0) {
- ide_complete_rq(drive, BLK_STS_OK, nr_bytes);
- return true;
- }
-
- return false;
-}
-
-/* standard prep_rq that builds 10 byte cmds */
-static bool ide_cdrom_prep_fs(struct request_queue *q, struct request *rq)
-{
- int hard_sect = queue_logical_block_size(q);
- long block = (long)blk_rq_pos(rq) / (hard_sect >> 9);
- unsigned long blocks = blk_rq_sectors(rq) / (hard_sect >> 9);
- struct scsi_request *req = scsi_req(rq);
-
- if (rq_data_dir(rq) == READ)
- req->cmd[0] = GPCMD_READ_10;
- else
- req->cmd[0] = GPCMD_WRITE_10;
-
- /*
- * fill in lba
- */
- req->cmd[2] = (block >> 24) & 0xff;
- req->cmd[3] = (block >> 16) & 0xff;
- req->cmd[4] = (block >> 8) & 0xff;
- req->cmd[5] = block & 0xff;
-
- /*
- * and transfer length
- */
- req->cmd[7] = (blocks >> 8) & 0xff;
- req->cmd[8] = blocks & 0xff;
- req->cmd_len = 10;
- return true;
-}
-
-/*
- * Most of the SCSI commands are supported directly by ATAPI devices.
- * This transform handles the few exceptions.
- */
-static bool ide_cdrom_prep_pc(struct request *rq)
-{
- u8 *c = scsi_req(rq)->cmd;
-
- /* transform 6-byte read/write commands to the 10-byte version */
- if (c[0] == READ_6 || c[0] == WRITE_6) {
- c[8] = c[4];
- c[5] = c[3];
- c[4] = c[2];
- c[3] = c[1] & 0x1f;
- c[2] = 0;
- c[1] &= 0xe0;
- c[0] += (READ_10 - READ_6);
- scsi_req(rq)->cmd_len = 10;
- return true;
- }
-
- /*
- * it's silly to pretend we understand 6-byte sense commands, just
- * reject with ILLEGAL_REQUEST and the caller should take the
- * appropriate action
- */
- if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) {
- scsi_req(rq)->result = ILLEGAL_REQUEST;
- return false;
- }
-
- return true;
-}
-
-static bool ide_cdrom_prep_rq(ide_drive_t *drive, struct request *rq)
-{
- if (!blk_rq_is_passthrough(rq)) {
- scsi_req_init(scsi_req(rq));
-
- return ide_cdrom_prep_fs(drive->queue, rq);
- } else if (blk_rq_is_scsi(rq))
- return ide_cdrom_prep_pc(rq);
-
- return true;
-}
-
-static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct ide_cmd *cmd = &hwif->cmd;
- struct request *rq = hwif->rq;
- ide_expiry_t *expiry = NULL;
- int dma_error = 0, dma, thislen, uptodate = 0;
- int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0;
- int sense = ata_sense_request(rq);
- unsigned int timeout;
- u16 len;
- u8 ireason, stat;
-
- ide_debug_log(IDE_DBG_PC, "cmd: 0x%x, write: 0x%x", rq->cmd[0], write);
-
- /* check for errors */
- dma = drive->dma;
- if (dma) {
- drive->dma = 0;
- drive->waiting_for_dma = 0;
- dma_error = hwif->dma_ops->dma_end(drive);
- ide_dma_unmap_sg(drive, cmd);
- if (dma_error) {
- printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name,
- write ? "write" : "read");
- ide_dma_off(drive);
- }
- }
-
- /* check status */
- stat = hwif->tp_ops->read_status(hwif);
-
- if (!OK_STAT(stat, 0, BAD_R_STAT)) {
- rc = cdrom_decode_status(drive, stat);
- if (rc) {
- if (rc == 2)
- goto out_end;
- return ide_stopped;
- }
- }
-
- /* using dma, transfer is complete now */
- if (dma) {
- if (dma_error)
- return ide_error(drive, "dma error", stat);
- uptodate = 1;
- goto out_end;
- }
-
- ide_read_bcount_and_ireason(drive, &len, &ireason);
-
- thislen = !blk_rq_is_passthrough(rq) ? len : cmd->nleft;
- if (thislen > len)
- thislen = len;
-
- ide_debug_log(IDE_DBG_PC, "DRQ: stat: 0x%x, thislen: %d",
- stat, thislen);
-
- /* If DRQ is clear, the command has completed. */
- if ((stat & ATA_DRQ) == 0) {
- switch (req_op(rq)) {
- default:
- /*
- * If we're not done reading/writing, complain.
- * Otherwise, complete the command normally.
- */
- uptodate = 1;
- if (cmd->nleft > 0) {
- printk(KERN_ERR PFX "%s: %s: data underrun "
- "(%u bytes)\n", drive->name, __func__,
- cmd->nleft);
- if (!write)
- rq->rq_flags |= RQF_FAILED;
- uptodate = 0;
- }
- goto out_end;
- case REQ_OP_DRV_IN:
- case REQ_OP_DRV_OUT:
- ide_cd_request_sense_fixup(drive, cmd);
-
- uptodate = cmd->nleft ? 0 : 1;
-
- /*
- * suck out the remaining bytes from the drive in an
- * attempt to complete the data xfer. (see BZ#13399)
- */
- if (!(stat & ATA_ERR) && !uptodate && thislen) {
- ide_pio_bytes(drive, cmd, write, thislen);
- uptodate = cmd->nleft ? 0 : 1;
- }
-
- if (!uptodate)
- rq->rq_flags |= RQF_FAILED;
- goto out_end;
- case REQ_OP_SCSI_IN:
- case REQ_OP_SCSI_OUT:
- goto out_end;
- }
- }
-
- rc = ide_check_ireason(drive, rq, len, ireason, write);
- if (rc)
- goto out_end;
-
- cmd->last_xfer_len = 0;
-
- ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, "
- "ireason: 0x%x",
- rq->cmd_type, ireason);
-
- /* transfer data */
- while (thislen > 0) {
- int blen = min_t(int, thislen, cmd->nleft);
-
- if (cmd->nleft == 0)
- break;
-
- ide_pio_bytes(drive, cmd, write, blen);
- cmd->last_xfer_len += blen;
-
- thislen -= blen;
- len -= blen;
-
- if (sense && write == 0)
- scsi_req(rq)->sense_len += blen;
- }
-
- /* pad, if necessary */
- if (len > 0) {
- if (blk_rq_is_passthrough(rq) || write == 0)
- ide_pad_transfer(drive, write, len);
- else {
- printk(KERN_ERR PFX "%s: confused, missing data\n",
- drive->name);
- blk_dump_rq_flags(rq, "cdrom_newpc_intr");
- }
- }
-
- switch (req_op(rq)) {
- case REQ_OP_SCSI_IN:
- case REQ_OP_SCSI_OUT:
- timeout = rq->timeout;
- break;
- case REQ_OP_DRV_IN:
- case REQ_OP_DRV_OUT:
- expiry = ide_cd_expiry;
- fallthrough;
- default:
- timeout = ATAPI_WAIT_PC;
- break;
- }
-
- hwif->expiry = expiry;
- ide_set_handler(drive, cdrom_newpc_intr, timeout);
- return ide_started;
-
-out_end:
- if (blk_rq_is_scsi(rq) && rc == 0) {
- scsi_req(rq)->resid_len = 0;
- blk_mq_end_request(rq, BLK_STS_OK);
- hwif->rq = NULL;
- } else {
- if (sense && uptodate)
- ide_cd_complete_failed_rq(drive, rq);
-
- if (!blk_rq_is_passthrough(rq)) {
- if (cmd->nleft == 0)
- uptodate = 1;
- } else {
- if (uptodate <= 0 && scsi_req(rq)->result == 0)
- scsi_req(rq)->result = -EIO;
- }
-
- if (uptodate == 0 && rq->bio)
- if (ide_cd_error_cmd(drive, cmd))
- return ide_stopped;
-
- /* make sure it's fully ended */
- if (blk_rq_is_passthrough(rq)) {
- scsi_req(rq)->resid_len -= cmd->nbytes - cmd->nleft;
- if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE))
- scsi_req(rq)->resid_len += cmd->last_xfer_len;
- }
-
- ide_complete_rq(drive, uptodate ? BLK_STS_OK : BLK_STS_IOERR, blk_rq_bytes(rq));
-
- if (sense && rc == 2)
- ide_error(drive, "request sense failure", stat);
- }
-
- ide_cd_free_sense(drive);
- return ide_stopped;
-}
-
-static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq)
-{
- struct cdrom_info *cd = drive->driver_data;
- struct request_queue *q = drive->queue;
- int write = rq_data_dir(rq) == WRITE;
- unsigned short sectors_per_frame =
- queue_logical_block_size(q) >> SECTOR_SHIFT;
-
- ide_debug_log(IDE_DBG_RQ, "rq->cmd[0]: 0x%x, rq->cmd_flags: 0x%x, "
- "secs_per_frame: %u",
- rq->cmd[0], rq->cmd_flags, sectors_per_frame);
-
- if (write) {
- /* disk has become write protected */
- if (get_disk_ro(cd->disk))
- return ide_stopped;
- } else {
- /*
- * We may be retrying this request after an error. Fix up any
- * weirdness which might be present in the request packet.
- */
- ide_cdrom_prep_rq(drive, rq);
- }
-
- /* fs requests *must* be hardware frame aligned */
- if ((blk_rq_sectors(rq) & (sectors_per_frame - 1)) ||
- (blk_rq_pos(rq) & (sectors_per_frame - 1)))
- return ide_stopped;
-
- /* use DMA, if possible */
- drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
-
- if (write)
- cd->devinfo.media_written = 1;
-
- rq->timeout = ATAPI_WAIT_PC;
-
- return ide_started;
-}
-
-static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
-{
-
- ide_debug_log(IDE_DBG_PC, "rq->cmd[0]: 0x%x, rq->cmd_type: 0x%x",
- rq->cmd[0], rq->cmd_type);
-
- if (blk_rq_is_scsi(rq))
- rq->rq_flags |= RQF_QUIET;
- else
- rq->rq_flags &= ~RQF_FAILED;
-
- drive->dma = 0;
-
- /* sg request */
- if (rq->bio) {
- struct request_queue *q = drive->queue;
- char *buf = bio_data(rq->bio);
- unsigned int alignment;
-
- drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
-
- /*
- * check if dma is safe
- *
- * NOTE! The "len" and "addr" checks should possibly have
- * separate masks.
- */
- alignment = queue_dma_alignment(q) | q->dma_pad_mask;
- if ((unsigned long)buf & alignment
- || blk_rq_bytes(rq) & q->dma_pad_mask
- || object_is_on_stack(buf))
- drive->dma = 0;
- }
-}
-
-static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
- sector_t block)
-{
- struct ide_cmd cmd;
- int uptodate = 0;
- unsigned int nsectors;
-
- ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
- rq->cmd[0], (unsigned long long)block);
-
- if (drive->debug_mask & IDE_DBG_RQ)
- blk_dump_rq_flags(rq, "ide_cd_do_request");
-
- switch (req_op(rq)) {
- default:
- if (cdrom_start_rw(drive, rq) == ide_stopped)
- goto out_end;
- break;
- case REQ_OP_SCSI_IN:
- case REQ_OP_SCSI_OUT:
- handle_pc:
- if (!rq->timeout)
- rq->timeout = ATAPI_WAIT_PC;
- cdrom_do_block_pc(drive, rq);
- break;
- case REQ_OP_DRV_IN:
- case REQ_OP_DRV_OUT:
- switch (ide_req(rq)->type) {
- case ATA_PRIV_MISC:
- /* right now this can only be a reset... */
- uptodate = 1;
- goto out_end;
- case ATA_PRIV_SENSE:
- case ATA_PRIV_PC:
- goto handle_pc;
- default:
- BUG();
- }
- }
-
- /* prepare sense request for this command */
- ide_prep_sense(drive, rq);
-
- memset(&cmd, 0, sizeof(cmd));
-
- if (rq_data_dir(rq))
- cmd.tf_flags |= IDE_TFLAG_WRITE;
-
- cmd.rq = rq;
-
- if (!blk_rq_is_passthrough(rq) || blk_rq_bytes(rq)) {
- ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
- ide_map_sg(drive, &cmd);
- }
-
- return ide_issue_pc(drive, &cmd);
-out_end:
- nsectors = blk_rq_sectors(rq);
-
- if (nsectors == 0)
- nsectors = 1;
-
- ide_complete_rq(drive, uptodate ? BLK_STS_OK : BLK_STS_IOERR, nsectors << 9);
-
- return ide_stopped;
-}
-
-/*
- * Ioctl handling.
- *
- * Routines which queue packet commands take as a final argument a pointer to a
- * request_sense struct. If execution of the command results in an error with a
- * CHECK CONDITION status, this structure will be filled with the results of the
- * subsequent request sense command. The pointer can also be NULL, in which case
- * no sense information is returned.
- */
-static void msf_from_bcd(struct atapi_msf *msf)
-{
- msf->minute = bcd2bin(msf->minute);
- msf->second = bcd2bin(msf->second);
- msf->frame = bcd2bin(msf->frame);
-}
-
-int cdrom_check_status(ide_drive_t *drive, struct scsi_sense_hdr *sshdr)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi;
- unsigned char cmd[BLK_MAX_CDB];
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- if (!info)
- return -EIO;
-
- cdi = &info->devinfo;
-
- memset(cmd, 0, BLK_MAX_CDB);
- cmd[0] = GPCMD_TEST_UNIT_READY;
-
- /*
- * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs
- * instead of supporting the LOAD_UNLOAD opcode.
- */
- cmd[7] = cdi->sanyo_slot % 3;
-
- return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sshdr, 0, RQF_QUIET);
-}
-
-static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
- unsigned long *sectors_per_frame)
-{
- struct {
- __be32 lba;
- __be32 blocklen;
- } capbuf;
-
- int stat;
- unsigned char cmd[BLK_MAX_CDB];
- unsigned len = sizeof(capbuf);
- u32 blocklen;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- memset(cmd, 0, BLK_MAX_CDB);
- cmd[0] = GPCMD_READ_CDVD_CAPACITY;
-
- stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, NULL, 0,
- RQF_QUIET);
- if (stat)
- return stat;
-
- /*
- * Sanity check the given block size, in so far as making
- * sure the sectors_per_frame we give to the caller won't
- * end up being bogus.
- */
- blocklen = be32_to_cpu(capbuf.blocklen);
- blocklen = (blocklen >> SECTOR_SHIFT) << SECTOR_SHIFT;
- switch (blocklen) {
- case 512:
- case 1024:
- case 2048:
- case 4096:
- break;
- default:
- printk_once(KERN_ERR PFX "%s: weird block size %u; "
- "setting default block size to 2048\n",
- drive->name, blocklen);
- blocklen = 2048;
- break;
- }
-
- *capacity = 1 + be32_to_cpu(capbuf.lba);
- *sectors_per_frame = blocklen >> SECTOR_SHIFT;
-
- ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu",
- *capacity, *sectors_per_frame);
-
- return 0;
-}
-
-static int ide_cdrom_read_tocentry(ide_drive_t *drive, int trackno,
- int msf_flag, int format, char *buf, int buflen)
-{
- unsigned char cmd[BLK_MAX_CDB];
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- memset(cmd, 0, BLK_MAX_CDB);
-
- cmd[0] = GPCMD_READ_TOC_PMA_ATIP;
- cmd[6] = trackno;
- cmd[7] = (buflen >> 8);
- cmd[8] = (buflen & 0xff);
- cmd[9] = (format << 6);
-
- if (msf_flag)
- cmd[1] = 2;
-
- return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, NULL, 0, RQF_QUIET);
-}
-
-/* Try to read the entire TOC for the disk into our internal buffer. */
-int ide_cd_read_toc(ide_drive_t *drive)
-{
- int stat, ntracks, i;
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi = &info->devinfo;
- struct atapi_toc *toc = info->toc;
- struct {
- struct atapi_toc_header hdr;
- struct atapi_toc_entry ent;
- } ms_tmp;
- long last_written;
- unsigned long sectors_per_frame = SECTORS_PER_FRAME;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- if (toc == NULL) {
- /* try to allocate space */
- toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL);
- if (toc == NULL) {
- printk(KERN_ERR PFX "%s: No cdrom TOC buffer!\n",
- drive->name);
- return -ENOMEM;
- }
- info->toc = toc;
- }
-
- /*
- * Check to see if the existing data is still valid. If it is,
- * just return.
- */
- (void) cdrom_check_status(drive, NULL);
-
- if (drive->atapi_flags & IDE_AFLAG_TOC_VALID)
- return 0;
-
- /* try to get the total cdrom capacity and sector size */
- stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame);
- if (stat)
- toc->capacity = 0x1fffff;
-
- set_capacity(info->disk, toc->capacity * sectors_per_frame);
- /* save a private copy of the TOC capacity for error handling */
- drive->probed_capacity = toc->capacity * sectors_per_frame;
-
- blk_queue_logical_block_size(drive->queue,
- sectors_per_frame << SECTOR_SHIFT);
-
- /* first read just the header, so we know how long the TOC is */
- stat = ide_cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr,
- sizeof(struct atapi_toc_header));
- if (stat)
- return stat;
-
- if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
- toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
- toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
- }
-
- ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
- if (ntracks <= 0)
- return -EIO;
- if (ntracks > MAX_TRACKS)
- ntracks = MAX_TRACKS;
-
- /* now read the whole schmeer */
- stat = ide_cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0,
- (char *)&toc->hdr,
- sizeof(struct atapi_toc_header) +
- (ntracks + 1) *
- sizeof(struct atapi_toc_entry));
-
- if (stat && toc->hdr.first_track > 1) {
- /*
- * Cds with CDI tracks only don't have any TOC entries, despite
- * of this the returned values are
- * first_track == last_track = number of CDI tracks + 1,
- * so that this case is indistinguishable from the same layout
- * plus an additional audio track. If we get an error for the
- * regular case, we assume a CDI without additional audio
- * tracks. In this case the readable TOC is empty (CDI tracks
- * are not included) and only holds the Leadout entry.
- *
- * Heiko Eißfeldt.
- */
- ntracks = 0;
- stat = ide_cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0,
- (char *)&toc->hdr,
- sizeof(struct atapi_toc_header) +
- (ntracks + 1) *
- sizeof(struct atapi_toc_entry));
- if (stat)
- return stat;
-
- if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
- toc->hdr.first_track = (u8)bin2bcd(CDROM_LEADOUT);
- toc->hdr.last_track = (u8)bin2bcd(CDROM_LEADOUT);
- } else {
- toc->hdr.first_track = CDROM_LEADOUT;
- toc->hdr.last_track = CDROM_LEADOUT;
- }
- }
-
- if (stat)
- return stat;
-
- toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length);
-
- if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD) {
- toc->hdr.first_track = bcd2bin(toc->hdr.first_track);
- toc->hdr.last_track = bcd2bin(toc->hdr.last_track);
- }
-
- for (i = 0; i <= ntracks; i++) {
- if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
- if (drive->atapi_flags & IDE_AFLAG_TOCTRACKS_AS_BCD)
- toc->ent[i].track = bcd2bin(toc->ent[i].track);
- msf_from_bcd(&toc->ent[i].addr.msf);
- }
- toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute,
- toc->ent[i].addr.msf.second,
- toc->ent[i].addr.msf.frame);
- }
-
- if (toc->hdr.first_track != CDROM_LEADOUT) {
- /* read the multisession information */
- stat = ide_cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp,
- sizeof(ms_tmp));
- if (stat)
- return stat;
-
- toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba);
- } else {
- ms_tmp.hdr.last_track = CDROM_LEADOUT;
- ms_tmp.hdr.first_track = ms_tmp.hdr.last_track;
- toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */
- }
-
- if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) {
- /* re-read multisession information using MSF format */
- stat = ide_cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp,
- sizeof(ms_tmp));
- if (stat)
- return stat;
-
- msf_from_bcd(&ms_tmp.ent.addr.msf);
- toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute,
- ms_tmp.ent.addr.msf.second,
- ms_tmp.ent.addr.msf.frame);
- }
-
- toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
-
- /* now try to get the total cdrom capacity */
- stat = cdrom_get_last_written(cdi, &last_written);
- if (!stat && (last_written > toc->capacity)) {
- toc->capacity = last_written;
- set_capacity(info->disk, toc->capacity * sectors_per_frame);
- drive->probed_capacity = toc->capacity * sectors_per_frame;
- }
-
- /* Remember that we've read this stuff. */
- drive->atapi_flags |= IDE_AFLAG_TOC_VALID;
-
- return 0;
-}
-
-int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *cdi = &info->devinfo;
- struct packet_command cgc;
- int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- if ((drive->atapi_flags & IDE_AFLAG_FULL_CAPS_PAGE) == 0)
- size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE;
-
- init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN);
- do {
- /* we seem to get stat=0x01,err=0x00 the first time (??) */
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0);
- if (!stat)
- break;
- } while (--attempts);
- return stat;
-}
-
-void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf)
-{
- struct cdrom_info *cd = drive->driver_data;
- u16 curspeed, maxspeed;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- if (drive->atapi_flags & IDE_AFLAG_LE_SPEED_FIELDS) {
- curspeed = le16_to_cpup((__le16 *)&buf[8 + 14]);
- maxspeed = le16_to_cpup((__le16 *)&buf[8 + 8]);
- } else {
- curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]);
- maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]);
- }
-
- ide_debug_log(IDE_DBG_PROBE, "curspeed: %u, maxspeed: %u",
- curspeed, maxspeed);
-
- cd->current_speed = DIV_ROUND_CLOSEST(curspeed, 176);
- cd->max_speed = DIV_ROUND_CLOSEST(maxspeed, 176);
-}
-
-#define IDE_CD_CAPABILITIES \
- (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \
- CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \
- CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \
- CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \
- CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM)
-
-static const struct cdrom_device_ops ide_cdrom_dops = {
- .open = ide_cdrom_open_real,
- .release = ide_cdrom_release_real,
- .drive_status = ide_cdrom_drive_status,
- .check_events = ide_cdrom_check_events_real,
- .tray_move = ide_cdrom_tray_move,
- .lock_door = ide_cdrom_lock_door,
- .select_speed = ide_cdrom_select_speed,
- .get_last_session = ide_cdrom_get_last_session,
- .get_mcn = ide_cdrom_get_mcn,
- .reset = ide_cdrom_reset,
- .audio_ioctl = ide_cdrom_audio_ioctl,
- .capability = IDE_CD_CAPABILITIES,
- .generic_packet = ide_cdrom_packet,
-};
-
-static int ide_cdrom_register(ide_drive_t *drive, int nslots)
-{
- struct cdrom_info *info = drive->driver_data;
- struct cdrom_device_info *devinfo = &info->devinfo;
-
- ide_debug_log(IDE_DBG_PROBE, "nslots: %d", nslots);
-
- devinfo->ops = &ide_cdrom_dops;
- devinfo->speed = info->current_speed;
- devinfo->capacity = nslots;
- devinfo->handle = drive;
- strcpy(devinfo->name, drive->name);
-
- if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT)
- devinfo->mask |= CDC_SELECT_SPEED;
-
- return register_cdrom(info->disk, devinfo);
-}
-
-static int ide_cdrom_probe_capabilities(ide_drive_t *drive)
-{
- struct cdrom_info *cd = drive->driver_data;
- struct cdrom_device_info *cdi = &cd->devinfo;
- u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE];
- mechtype_t mechtype;
- int nslots = 1;
-
- ide_debug_log(IDE_DBG_PROBE, "media: 0x%x, atapi_flags: 0x%lx",
- drive->media, drive->atapi_flags);
-
- cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R |
- CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO |
- CDC_MO_DRIVE | CDC_RAM);
-
- if (drive->media == ide_optical) {
- cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM);
- printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n",
- drive->name);
- return nslots;
- }
-
- if (drive->atapi_flags & IDE_AFLAG_PRE_ATAPI12) {
- drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
- cdi->mask &= ~CDC_PLAY_AUDIO;
- return nslots;
- }
-
- /*
- * We have to cheat a little here. the packet will eventually be queued
- * with ide_cdrom_packet(), which extracts the drive from cdi->handle.
- * Since this device hasn't been registered with the Uniform layer yet,
- * it can't do this. Same goes for cdi->ops.
- */
- cdi->handle = drive;
- cdi->ops = &ide_cdrom_dops;
-
- if (ide_cdrom_get_capabilities(drive, buf))
- return 0;
-
- if ((buf[8 + 6] & 0x01) == 0)
- drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
- if (buf[8 + 6] & 0x08)
- drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT;
- if (buf[8 + 3] & 0x01)
- cdi->mask &= ~CDC_CD_R;
- if (buf[8 + 3] & 0x02)
- cdi->mask &= ~(CDC_CD_RW | CDC_RAM);
- if (buf[8 + 2] & 0x38)
- cdi->mask &= ~CDC_DVD;
- if (buf[8 + 3] & 0x20)
- cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM);
- if (buf[8 + 3] & 0x10)
- cdi->mask &= ~CDC_DVD_R;
- if ((buf[8 + 4] & 0x01) || (drive->atapi_flags & IDE_AFLAG_PLAY_AUDIO_OK))
- cdi->mask &= ~CDC_PLAY_AUDIO;
-
- mechtype = buf[8 + 6] >> 5;
- if (mechtype == mechtype_caddy ||
- mechtype == mechtype_popup ||
- (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE))
- cdi->mask |= CDC_CLOSE_TRAY;
-
- if (cdi->sanyo_slot > 0) {
- cdi->mask &= ~CDC_SELECT_DISC;
- nslots = 3;
- } else if (mechtype == mechtype_individual_changer ||
- mechtype == mechtype_cartridge_changer) {
- nslots = cdrom_number_of_slots(cdi);
- if (nslots > 1)
- cdi->mask &= ~CDC_SELECT_DISC;
- }
-
- ide_cdrom_update_speed(drive, buf);
-
- printk(KERN_INFO PFX "%s: ATAPI", drive->name);
-
- /* don't print speed if the drive reported 0 */
- if (cd->max_speed)
- printk(KERN_CONT " %dX", cd->max_speed);
-
- printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM");
-
- if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0)
- printk(KERN_CONT " DVD%s%s",
- (cdi->mask & CDC_DVD_R) ? "" : "-R",
- (cdi->mask & CDC_DVD_RAM) ? "" : "/RAM");
-
- if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0)
- printk(KERN_CONT " CD%s%s",
- (cdi->mask & CDC_CD_R) ? "" : "-R",
- (cdi->mask & CDC_CD_RW) ? "" : "/RW");
-
- if ((cdi->mask & CDC_SELECT_DISC) == 0)
- printk(KERN_CONT " changer w/%d slots", nslots);
- else
- printk(KERN_CONT " drive");
-
- printk(KERN_CONT ", %dkB Cache\n",
- be16_to_cpup((__be16 *)&buf[8 + 12]));
-
- return nslots;
-}
-
-struct cd_list_entry {
- const char *id_model;
- const char *id_firmware;
- unsigned int cd_flags;
-};
-
-#ifdef CONFIG_IDE_PROC_FS
-static sector_t ide_cdrom_capacity(ide_drive_t *drive)
-{
- unsigned long capacity, sectors_per_frame;
-
- if (cdrom_read_capacity(drive, &capacity, §ors_per_frame))
- return 0;
-
- return capacity * sectors_per_frame;
-}
-
-static int idecd_capacity_proc_show(struct seq_file *m, void *v)
-{
- ide_drive_t *drive = m->private;
-
- seq_printf(m, "%llu\n", (long long)ide_cdrom_capacity(drive));
- return 0;
-}
-
-static ide_proc_entry_t idecd_proc[] = {
- { "capacity", S_IFREG|S_IRUGO, idecd_capacity_proc_show },
- {}
-};
-
-static ide_proc_entry_t *ide_cd_proc_entries(ide_drive_t *drive)
-{
- return idecd_proc;
-}
-
-static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive)
-{
- return NULL;
-}
-#endif
-
-static const struct cd_list_entry ide_cd_quirks_list[] = {
- /* SCR-3231 doesn't support the SET_CD_SPEED command. */
- { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_AFLAG_NO_SPEED_SELECT },
- /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */
- { "NEC CD-ROM DRIVE:260", "1.01", IDE_AFLAG_TOCADDR_AS_BCD |
- IDE_AFLAG_PRE_ATAPI12, },
- /* Vertos 300, some versions of this drive like to talk BCD. */
- { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, },
- /* Vertos 600 ESD. */
- { "V006E0DS", NULL, IDE_AFLAG_VERTOS_600_ESD, },
- /*
- * Sanyo 3 CD changer uses a non-standard command for CD changing
- * (by default standard ATAPI support for CD changers is used).
- */
- { "CD-ROM CDR-C3 G", NULL, IDE_AFLAG_SANYO_3CD },
- { "CD-ROM CDR-C3G", NULL, IDE_AFLAG_SANYO_3CD },
- { "CD-ROM CDR_C36", NULL, IDE_AFLAG_SANYO_3CD },
- /* Stingray 8X CD-ROM. */
- { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_AFLAG_PRE_ATAPI12 },
- /*
- * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length
- * mode sense page capabilities size, but older drives break.
- */
- { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
- { "WPI CDS-32X", NULL, IDE_AFLAG_FULL_CAPS_PAGE },
- /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */
- { "", "241N", IDE_AFLAG_LE_SPEED_FIELDS },
- /*
- * Some drives used by Apple don't advertise audio play
- * but they do support reading TOC & audio datas.
- */
- { "MATSHITADVD-ROM SR-8187", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8186", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8176", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "MATSHITADVD-ROM SR-8174", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "Optiarc DVD RW AD-5200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "Optiarc DVD RW AD-7200A", NULL, IDE_AFLAG_PLAY_AUDIO_OK },
- { "Optiarc DVD RW AD-7543A", NULL, IDE_AFLAG_NO_AUTOCLOSE },
- { "TEAC CD-ROM CD-224E", NULL, IDE_AFLAG_NO_AUTOCLOSE },
- { NULL, NULL, 0 }
-};
-
-static unsigned int ide_cd_flags(u16 *id)
-{
- const struct cd_list_entry *cle = ide_cd_quirks_list;
-
- while (cle->id_model) {
- if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 &&
- (cle->id_firmware == NULL ||
- strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware)))
- return cle->cd_flags;
- cle++;
- }
-
- return 0;
-}
-
-static int ide_cdrom_setup(ide_drive_t *drive)
-{
- struct cdrom_info *cd = drive->driver_data;
- struct cdrom_device_info *cdi = &cd->devinfo;
- struct request_queue *q = drive->queue;
- u16 *id = drive->id;
- char *fw_rev = (char *)&id[ATA_ID_FW_REV];
- int nslots;
-
- ide_debug_log(IDE_DBG_PROBE, "enter");
-
- drive->prep_rq = ide_cdrom_prep_rq;
- blk_queue_dma_alignment(q, 31);
- blk_queue_update_dma_pad(q, 15);
-
- drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
- drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
-
- if ((drive->atapi_flags & IDE_AFLAG_VERTOS_300_SSD) &&
- fw_rev[4] == '1' && fw_rev[6] <= '2')
- drive->atapi_flags |= (IDE_AFLAG_TOCTRACKS_AS_BCD |
- IDE_AFLAG_TOCADDR_AS_BCD);
- else if ((drive->atapi_flags & IDE_AFLAG_VERTOS_600_ESD) &&
- fw_rev[4] == '1' && fw_rev[6] <= '2')
- drive->atapi_flags |= IDE_AFLAG_TOCTRACKS_AS_BCD;
- else if (drive->atapi_flags & IDE_AFLAG_SANYO_3CD)
- /* 3 => use CD in slot 0 */
- cdi->sanyo_slot = 3;
-
- nslots = ide_cdrom_probe_capabilities(drive);
-
- blk_queue_logical_block_size(q, CD_FRAMESIZE);
-
- if (ide_cdrom_register(drive, nslots)) {
- printk(KERN_ERR PFX "%s: %s failed to register device with the"
- " cdrom driver.\n", drive->name, __func__);
- cd->devinfo.handle = NULL;
- return 1;
- }
-
- ide_proc_register_driver(drive, cd->driver);
- return 0;
-}
-
-static void ide_cd_remove(ide_drive_t *drive)
-{
- struct cdrom_info *info = drive->driver_data;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- ide_proc_unregister_driver(drive, info->driver);
- device_del(&info->dev);
- del_gendisk(info->disk);
-
- mutex_lock(&idecd_ref_mutex);
- put_device(&info->dev);
- mutex_unlock(&idecd_ref_mutex);
-}
-
-static void ide_cd_release(struct device *dev)
-{
- struct cdrom_info *info = to_ide_drv(dev, cdrom_info);
- struct cdrom_device_info *devinfo = &info->devinfo;
- ide_drive_t *drive = info->drive;
- struct gendisk *g = info->disk;
-
- ide_debug_log(IDE_DBG_FUNC, "enter");
-
- kfree(info->toc);
- if (devinfo->handle == drive)
- unregister_cdrom(devinfo);
- drive->driver_data = NULL;
- drive->prep_rq = NULL;
- g->private_data = NULL;
- put_disk(g);
- kfree(info);
-}
-
-static int ide_cd_probe(ide_drive_t *);
-
-static struct ide_driver ide_cdrom_driver = {
- .gen_driver = {
- .owner = THIS_MODULE,
- .name = "ide-cdrom",
- .bus = &ide_bus_type,
- },
- .probe = ide_cd_probe,
- .remove = ide_cd_remove,
- .version = IDECD_VERSION,
- .do_request = ide_cd_do_request,
-#ifdef CONFIG_IDE_PROC_FS
- .proc_entries = ide_cd_proc_entries,
- .proc_devsets = ide_cd_proc_devsets,
-#endif
-};
-
-static int idecd_open(struct block_device *bdev, fmode_t mode)
-{
- struct cdrom_info *info;
- int rc = -ENXIO;
-
- if (bdev_check_media_change(bdev)) {
- info = ide_drv_g(bdev->bd_disk, cdrom_info);
-
- ide_cd_read_toc(info->drive);
- }
-
- mutex_lock(&ide_cd_mutex);
- info = ide_cd_get(bdev->bd_disk);
- if (!info)
- goto out;
-
- rc = cdrom_open(&info->devinfo, bdev, mode);
- if (rc < 0)
- ide_cd_put(info);
-out:
- mutex_unlock(&ide_cd_mutex);
- return rc;
-}
-
-static void idecd_release(struct gendisk *disk, fmode_t mode)
-{
- struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
-
- mutex_lock(&ide_cd_mutex);
- cdrom_release(&info->devinfo, mode);
-
- ide_cd_put(info);
- mutex_unlock(&ide_cd_mutex);
-}
-
-static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg)
-{
- struct packet_command cgc;
- char buffer[16];
- int stat;
- char spindown;
-
- if (copy_from_user(&spindown, (void __user *)arg, sizeof(char)))
- return -EFAULT;
-
- init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
-
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
- if (stat)
- return stat;
-
- buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f);
- return cdrom_mode_select(cdi, &cgc);
-}
-
-static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg)
-{
- struct packet_command cgc;
- char buffer[16];
- int stat;
- char spindown;
-
- init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
-
- stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0);
- if (stat)
- return stat;
-
- spindown = buffer[11] & 0x0f;
- if (copy_to_user((void __user *)arg, &spindown, sizeof(char)))
- return -EFAULT;
- return 0;
-}
-
-static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
- int err;
-
- switch (cmd) {
- case CDROMSETSPINDOWN:
- return idecd_set_spindown(&info->devinfo, arg);
- case CDROMGETSPINDOWN:
- return idecd_get_spindown(&info->devinfo, arg);
- default:
- break;
- }
-
- err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
- if (err == -EINVAL)
- err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg);
-
- return err;
-}
-
-static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- int ret;
-
- mutex_lock(&ide_cd_mutex);
- ret = idecd_locked_ioctl(bdev, mode, cmd, arg);
- mutex_unlock(&ide_cd_mutex);
-
- return ret;
-}
-
-static int idecd_locked_compat_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info);
- void __user *argp = compat_ptr(arg);
- int err;
-
- switch (cmd) {
- case CDROMSETSPINDOWN:
- return idecd_set_spindown(&info->devinfo, (unsigned long)argp);
- case CDROMGETSPINDOWN:
- return idecd_get_spindown(&info->devinfo, (unsigned long)argp);
- default:
- break;
- }
-
- err = generic_ide_ioctl(info->drive, bdev, cmd, arg);
- if (err == -EINVAL)
- err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd,
- (unsigned long)argp);
-
- return err;
-}
-
-static int idecd_compat_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned int cmd, unsigned long arg)
-{
- int ret;
-
- mutex_lock(&ide_cd_mutex);
- ret = idecd_locked_compat_ioctl(bdev, mode, cmd, arg);
- mutex_unlock(&ide_cd_mutex);
-
- return ret;
-}
-
-static unsigned int idecd_check_events(struct gendisk *disk,
- unsigned int clearing)
-{
- struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
- return cdrom_check_events(&info->devinfo, clearing);
-}
-
-static const struct block_device_operations idecd_ops = {
- .owner = THIS_MODULE,
- .open = idecd_open,
- .release = idecd_release,
- .ioctl = idecd_ioctl,
- .compat_ioctl = IS_ENABLED(CONFIG_COMPAT) ?
- idecd_compat_ioctl : NULL,
- .check_events = idecd_check_events,
-};
-
-/* module options */
-static unsigned long debug_mask;
-module_param(debug_mask, ulong, 0644);
-
-MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
-
-static int ide_cd_probe(ide_drive_t *drive)
-{
- struct cdrom_info *info;
- struct gendisk *g;
-
- ide_debug_log(IDE_DBG_PROBE, "driver_req: %s, media: 0x%x",
- drive->driver_req, drive->media);
-
- if (!strstr("ide-cdrom", drive->driver_req))
- goto failed;
-
- if (drive->media != ide_cdrom && drive->media != ide_optical)
- goto failed;
-
- drive->debug_mask = debug_mask;
- drive->irq_handler = cdrom_newpc_intr;
-
- info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
- if (info == NULL) {
- printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n",
- drive->name);
- goto failed;
- }
-
- g = alloc_disk(1 << PARTN_BITS);
- if (!g)
- goto out_free_cd;
-
- ide_init_disk(g, drive);
-
- info->dev.parent = &drive->gendev;
- info->dev.release = ide_cd_release;
- dev_set_name(&info->dev, "%s", dev_name(&drive->gendev));
-
- if (device_register(&info->dev))
- goto out_free_disk;
-
- info->drive = drive;
- info->driver = &ide_cdrom_driver;
- info->disk = g;
-
- g->private_data = &info->driver;
-
- drive->driver_data = info;
-
- g->minors = 1;
- g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
- if (ide_cdrom_setup(drive)) {
- put_device(&info->dev);
- goto failed;
- }
-
- ide_cd_read_toc(drive);
- g->fops = &idecd_ops;
- g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE;
- g->events = DISK_EVENT_MEDIA_CHANGE;
- device_add_disk(&drive->gendev, g, NULL);
- return 0;
-
-out_free_disk:
- put_disk(g);
-out_free_cd:
- kfree(info);
-failed:
- return -ENODEV;
-}
-
-static void __exit ide_cdrom_exit(void)
-{
- driver_unregister(&ide_cdrom_driver.gen_driver);
-}
-
-static int __init ide_cdrom_init(void)
-{
- printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n");
- return driver_register(&ide_cdrom_driver.gen_driver);
-}
-
-MODULE_ALIAS("ide:*m-cdrom*");
-MODULE_ALIAS("ide-cd");
-module_init(ide_cdrom_init);
-module_exit(ide_cdrom_exit);
-MODULE_LICENSE("GPL");
projects / linux-2.6-block.git / blobdiff