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1858 lines
47 KiB
1858 lines
47 KiB
/* |
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* ATAPI CD-ROM driver. |
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* |
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* Copyright (C) 1994-1996 Scott Snyder <[email protected]> |
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* Copyright (C) 1996-1998 Erik Andersen <[email protected]> |
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* Copyright (C) 1998-2000 Jens Axboe <[email protected]> |
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* Copyright (C) 2005, 2007-2009 Bartlomiej Zolnierkiewicz |
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* |
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* May be copied or modified under the terms of the GNU General Public |
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* License. See linux/COPYING for more information. |
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* |
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* See Documentation/cdrom/ide-cd.rst for usage information. |
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* |
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* Suggestions are welcome. Patches that work are more welcome though. ;-) |
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* |
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* Documentation: |
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* Mt. Fuji (SFF8090 version 4) and ATAPI (SFF-8020i rev 2.6) standards. |
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* |
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* For historical changelog please see: |
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* Documentation/ide/ChangeLog.ide-cd.1994-2004 |
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*/ |
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|
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#define DRV_NAME "ide-cd" |
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#define PFX DRV_NAME ": " |
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|
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#define IDECD_VERSION "5.00" |
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|
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#include <linux/compat.h> |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/kernel.h> |
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#include <linux/sched/task_stack.h> |
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#include <linux/delay.h> |
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#include <linux/timer.h> |
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#include <linux/seq_file.h> |
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#include <linux/slab.h> |
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#include <linux/interrupt.h> |
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#include <linux/errno.h> |
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#include <linux/cdrom.h> |
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#include <linux/ide.h> |
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#include <linux/completion.h> |
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#include <linux/mutex.h> |
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#include <linux/bcd.h> |
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|
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/* For SCSI -> ATAPI command conversion */ |
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#include <scsi/scsi.h> |
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|
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#include <linux/io.h> |
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#include <asm/byteorder.h> |
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#include <linux/uaccess.h> |
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#include <asm/unaligned.h> |
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|
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#include "ide-cd.h" |
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|
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static DEFINE_MUTEX(ide_cd_mutex); |
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static DEFINE_MUTEX(idecd_ref_mutex); |
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|
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static void ide_cd_release(struct device *); |
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|
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static struct cdrom_info *ide_cd_get(struct gendisk *disk) |
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{ |
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struct cdrom_info *cd = NULL; |
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|
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mutex_lock(&idecd_ref_mutex); |
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cd = ide_drv_g(disk, cdrom_info); |
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if (cd) { |
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if (ide_device_get(cd->drive)) |
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cd = NULL; |
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else |
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get_device(&cd->dev); |
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|
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} |
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mutex_unlock(&idecd_ref_mutex); |
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return cd; |
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} |
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|
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static void ide_cd_put(struct cdrom_info *cd) |
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{ |
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ide_drive_t *drive = cd->drive; |
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|
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mutex_lock(&idecd_ref_mutex); |
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put_device(&cd->dev); |
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ide_device_put(drive); |
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mutex_unlock(&idecd_ref_mutex); |
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} |
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|
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/* |
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* Generic packet command support and error handling routines. |
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*/ |
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|
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/* Mark that we've seen a media change and invalidate our internal buffers. */ |
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static void cdrom_saw_media_change(ide_drive_t *drive) |
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{ |
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drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; |
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drive->atapi_flags &= ~IDE_AFLAG_TOC_VALID; |
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} |
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|
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static int cdrom_log_sense(ide_drive_t *drive, struct request *rq) |
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{ |
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struct request_sense *sense = &drive->sense_data; |
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int log = 0; |
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|
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if (!sense || !rq || (rq->rq_flags & RQF_QUIET)) |
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return 0; |
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ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key); |
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|
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switch (sense->sense_key) { |
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case NO_SENSE: |
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case RECOVERED_ERROR: |
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break; |
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case NOT_READY: |
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/* |
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* don't care about tray state messages for e.g. capacity |
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* commands or in-progress or becoming ready |
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*/ |
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if (sense->asc == 0x3a || sense->asc == 0x04) |
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break; |
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log = 1; |
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break; |
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case ILLEGAL_REQUEST: |
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/* |
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* don't log START_STOP unit with LoEj set, since we cannot |
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* reliably check if drive can auto-close |
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*/ |
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if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) |
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break; |
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log = 1; |
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break; |
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case UNIT_ATTENTION: |
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/* |
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* Make good and sure we've seen this potential media change. |
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* Some drives (i.e. Creative) fail to present the correct sense |
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* key in the error register. |
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*/ |
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cdrom_saw_media_change(drive); |
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break; |
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default: |
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log = 1; |
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break; |
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} |
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return log; |
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} |
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|
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static void cdrom_analyze_sense_data(ide_drive_t *drive, |
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struct request *failed_command) |
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{ |
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struct request_sense *sense = &drive->sense_data; |
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struct cdrom_info *info = drive->driver_data; |
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unsigned long sector; |
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unsigned long bio_sectors; |
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|
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ide_debug_log(IDE_DBG_SENSE, "error_code: 0x%x, sense_key: 0x%x", |
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sense->error_code, sense->sense_key); |
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|
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if (failed_command) |
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ide_debug_log(IDE_DBG_SENSE, "failed cmd: 0x%x", |
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failed_command->cmd[0]); |
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|
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if (!cdrom_log_sense(drive, failed_command)) |
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return; |
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|
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/* |
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* If a read toc is executed for a CD-R or CD-RW medium where the first |
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* toc has not been recorded yet, it will fail with 05/24/00 (which is a |
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* confusing error) |
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*/ |
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if (failed_command && scsi_req(failed_command)->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) |
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if (sense->sense_key == 0x05 && sense->asc == 0x24) |
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return; |
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|
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/* current error */ |
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if (sense->error_code == 0x70) { |
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switch (sense->sense_key) { |
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case MEDIUM_ERROR: |
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case VOLUME_OVERFLOW: |
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case ILLEGAL_REQUEST: |
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if (!sense->valid) |
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break; |
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if (failed_command == NULL || |
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blk_rq_is_passthrough(failed_command)) |
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break; |
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sector = (sense->information[0] << 24) | |
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(sense->information[1] << 16) | |
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(sense->information[2] << 8) | |
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(sense->information[3]); |
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|
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if (queue_logical_block_size(drive->queue) == 2048) |
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/* device sector size is 2K */ |
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sector <<= 2; |
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bio_sectors = max(bio_sectors(failed_command->bio), 4U); |
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sector &= ~(bio_sectors - 1); |
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|
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/* |
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* The SCSI specification allows for the value |
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* returned by READ CAPACITY to be up to 75 2K |
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* sectors past the last readable block. |
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* Therefore, if we hit a medium error within the |
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* last 75 2K sectors, we decrease the saved size |
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* value. |
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*/ |
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if (sector < get_capacity(info->disk) && |
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drive->probed_capacity - sector < 4 * 75) |
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set_capacity(info->disk, sector); |
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} |
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} |
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|
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ide_cd_log_error(drive->name, failed_command, sense); |
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} |
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|
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static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq) |
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{ |
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/* |
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* For ATA_PRIV_SENSE, "ide_req(rq)->special" points to the original |
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* failed request. Also, the sense data should be read |
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* directly from rq which might be different from the original |
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* sense buffer if it got copied during mapping. |
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*/ |
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struct request *failed = ide_req(rq)->special; |
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void *sense = bio_data(rq->bio); |
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|
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if (failed) { |
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/* |
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* Sense is always read into drive->sense_data, copy back to the |
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* original request. |
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*/ |
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memcpy(scsi_req(failed)->sense, sense, 18); |
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scsi_req(failed)->sense_len = scsi_req(rq)->sense_len; |
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cdrom_analyze_sense_data(drive, failed); |
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|
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if (ide_end_rq(drive, failed, BLK_STS_IOERR, blk_rq_bytes(failed))) |
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BUG(); |
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} else |
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cdrom_analyze_sense_data(drive, NULL); |
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} |
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|
|
|
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/* |
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* Allow the drive 5 seconds to recover; some devices will return NOT_READY |
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* while flushing data from cache. |
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* |
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* returns: 0 failed (write timeout expired) |
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* 1 success |
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*/ |
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static int ide_cd_breathe(ide_drive_t *drive, struct request *rq) |
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{ |
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|
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struct cdrom_info *info = drive->driver_data; |
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|
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if (!scsi_req(rq)->result) |
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info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; |
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scsi_req(rq)->result = 1; |
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|
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if (time_after(jiffies, info->write_timeout)) |
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return 0; |
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else { |
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/* |
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* take a breather |
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*/ |
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blk_mq_requeue_request(rq, false); |
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blk_mq_delay_kick_requeue_list(drive->queue, 1); |
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return 1; |
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} |
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} |
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static void ide_cd_free_sense(ide_drive_t *drive) |
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{ |
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if (!drive->sense_rq) |
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return; |
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blk_mq_free_request(drive->sense_rq); |
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drive->sense_rq = NULL; |
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drive->sense_rq_armed = false; |
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} |
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|
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/** |
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* Returns: |
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* 0: if the request should be continued. |
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* 1: if the request will be going through error recovery. |
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* 2: if the request should be ended. |
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*/ |
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static int cdrom_decode_status(ide_drive_t *drive, u8 stat) |
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{ |
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ide_hwif_t *hwif = drive->hwif; |
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struct request *rq = hwif->rq; |
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int err, sense_key, do_end_request = 0; |
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|
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/* get the IDE error register */ |
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err = ide_read_error(drive); |
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sense_key = err >> 4; |
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|
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ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, rq->cmd_type: 0x%x, err: 0x%x, " |
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"stat 0x%x", |
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rq->cmd[0], rq->cmd_type, err, stat); |
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|
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if (ata_sense_request(rq)) { |
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/* |
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* We got an error trying to get sense info from the drive |
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* (probably while trying to recover from a former error). |
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* Just give up. |
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*/ |
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rq->rq_flags |= RQF_FAILED; |
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return 2; |
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} |
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|
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/* if we have an error, pass CHECK_CONDITION as the SCSI status byte */ |
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if (blk_rq_is_scsi(rq) && !scsi_req(rq)->result) |
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scsi_req(rq)->result = SAM_STAT_CHECK_CONDITION; |
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|
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if (blk_noretry_request(rq)) |
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do_end_request = 1; |
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|
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switch (sense_key) { |
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case NOT_READY: |
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if (req_op(rq) == REQ_OP_WRITE) { |
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if (ide_cd_breathe(drive, rq)) |
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return 1; |
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} else { |
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cdrom_saw_media_change(drive); |
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|
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if (!blk_rq_is_passthrough(rq) && |
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!(rq->rq_flags & RQF_QUIET)) |
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printk(KERN_ERR PFX "%s: tray open\n", |
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drive->name); |
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} |
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do_end_request = 1; |
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break; |
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case UNIT_ATTENTION: |
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cdrom_saw_media_change(drive); |
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|
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if (blk_rq_is_passthrough(rq)) |
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return 0; |
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|
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/* |
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* Arrange to retry the request but be sure to give up if we've |
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* retried too many times. |
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*/ |
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if (++scsi_req(rq)->result > ERROR_MAX) |
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do_end_request = 1; |
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break; |
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case ILLEGAL_REQUEST: |
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/* |
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* Don't print error message for this condition -- SFF8090i |
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* indicates that 5/24/00 is the correct response to a request |
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* to close the tray if the drive doesn't have that capability. |
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* |
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* cdrom_log_sense() knows this! |
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*/ |
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if (scsi_req(rq)->cmd[0] == GPCMD_START_STOP_UNIT) |
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break; |
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fallthrough; |
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case DATA_PROTECT: |
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/* |
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* No point in retrying after an illegal request or data |
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* protect error. |
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*/ |
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if (!(rq->rq_flags & RQF_QUIET)) |
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ide_dump_status(drive, "command error", stat); |
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do_end_request = 1; |
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break; |
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case MEDIUM_ERROR: |
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/* |
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* No point in re-trying a zillion times on a bad sector. |
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* If we got here the error is not correctable. |
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*/ |
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if (!(rq->rq_flags & RQF_QUIET)) |
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ide_dump_status(drive, "media error " |
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"(bad sector)", stat); |
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do_end_request = 1; |
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break; |
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case BLANK_CHECK: |
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/* disk appears blank? */ |
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if (!(rq->rq_flags & RQF_QUIET)) |
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ide_dump_status(drive, "media error (blank)", |
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stat); |
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do_end_request = 1; |
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break; |
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default: |
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if (blk_rq_is_passthrough(rq)) |
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break; |
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if (err & ~ATA_ABORTED) { |
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/* go to the default handler for other errors */ |
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ide_error(drive, "cdrom_decode_status", stat); |
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return 1; |
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} else if (++scsi_req(rq)->result > ERROR_MAX) |
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/* we've racked up too many retries, abort */ |
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do_end_request = 1; |
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} |
|
|
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if (blk_rq_is_passthrough(rq)) { |
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rq->rq_flags |= RQF_FAILED; |
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do_end_request = 1; |
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} |
|
|
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/* |
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* End a request through request sense analysis when we have sense data. |
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* We need this in order to perform end of media processing. |
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*/ |
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if (do_end_request) |
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goto end_request; |
|
|
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/* if we got a CHECK_CONDITION status, queue a request sense command */ |
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if (stat & ATA_ERR) |
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return ide_queue_sense_rq(drive, NULL) ? 2 : 1; |
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return 1; |
|
|
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end_request: |
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if (stat & ATA_ERR) { |
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hwif->rq = NULL; |
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return ide_queue_sense_rq(drive, rq) ? 2 : 1; |
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} else |
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return 2; |
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} |
|
|
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static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd) |
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{ |
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struct request *rq = cmd->rq; |
|
|
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ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]); |
|
|
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/* |
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* Some of the trailing request sense fields are optional, |
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* and some drives don't send them. Sigh. |
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*/ |
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if (scsi_req(rq)->cmd[0] == GPCMD_REQUEST_SENSE && |
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cmd->nleft > 0 && cmd->nleft <= 5) |
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cmd->nleft = 0; |
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} |
|
|
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int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |
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int write, void *buffer, unsigned *bufflen, |
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struct scsi_sense_hdr *sshdr, int timeout, |
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req_flags_t rq_flags) |
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{ |
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struct cdrom_info *info = drive->driver_data; |
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struct scsi_sense_hdr local_sshdr; |
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int retries = 10; |
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bool failed; |
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|
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ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, " |
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"rq_flags: 0x%x", |
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cmd[0], write, timeout, rq_flags); |
|
|
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if (!sshdr) |
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sshdr = &local_sshdr; |
|
|
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/* start of retry loop */ |
|
do { |
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struct request *rq; |
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int error; |
|
bool delay = false; |
|
|
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rq = blk_get_request(drive->queue, |
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write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, 0); |
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memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB); |
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ide_req(rq)->type = ATA_PRIV_PC; |
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rq->rq_flags |= rq_flags; |
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rq->timeout = timeout; |
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if (buffer) { |
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error = blk_rq_map_kern(drive->queue, rq, buffer, |
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*bufflen, GFP_NOIO); |
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if (error) { |
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blk_put_request(rq); |
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return error; |
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} |
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} |
|
|
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blk_execute_rq(drive->queue, info->disk, rq, 0); |
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error = scsi_req(rq)->result ? -EIO : 0; |
|
|
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if (buffer) |
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*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");
|
|
|