diff options
Diffstat (limited to 'drivers/ide/ide-cd.c')
| -rw-r--r-- | drivers/ide/ide-cd.c | 2256 |
1 files changed, 887 insertions, 1369 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index c8d0e871599..0b510bafd90 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -4,7 +4,7 @@ * 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 Bartlomiej Zolnierkiewicz + * 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. @@ -12,17 +12,17 @@ * See Documentation/cdrom/ide-cd for usage information. * * Suggestions are welcome. Patches that work are more welcome though. ;-) - * For those wishing to work on this driver, please be sure you download - * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI - * (SFF-8020i rev 2.6) standards. These documents can be obtained by - * anonymous ftp from: - * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps - * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf + * + * 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/module.h> @@ -30,6 +30,7 @@ #include <linux/kernel.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> @@ -39,1183 +40,660 @@ #include <linux/mutex.h> #include <linux/bcd.h> -#include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ +/* For SCSI -> ATAPI command conversion */ +#include <scsi/scsi.h> -#include <asm/irq.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/byteorder.h> -#include <asm/uaccess.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); -#define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) - -#define ide_cd_g(disk) \ - container_of((disk)->private_data, struct cdrom_info, driver) +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_cd_g(disk); - if (cd) - kref_get(&cd->kref); + 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_release(struct kref *); - static void ide_cd_put(struct cdrom_info *cd) { + ide_drive_t *drive = cd->drive; + mutex_lock(&idecd_ref_mutex); - kref_put(&cd->kref, ide_cd_release); + 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) +/* Mark that we've seen a media change and invalidate our internal buffers. */ +static void cdrom_saw_media_change(ide_drive_t *drive) { - struct cdrom_info *cd = drive->driver_data; - - cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; - cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; - cd->nsectors_buffered = 0; + 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) +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->cmd_flags & REQ_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 (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); + 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; - default: - log = 1; + 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 (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) +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; - unsigned long valid; - struct cdrom_info *info = drive->driver_data; - if (!cdrom_log_sense(drive, failed_command, sense)) + 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 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 && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) if (sense->sense_key == 0x05 && sense->asc == 0x24) return; - if (sense->error_code == 0x70) { /* Current Error */ - switch(sense->sense_key) { + /* 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_fs_request(failed_command)) + failed_command->cmd_type != REQ_TYPE_FS) break; sector = (sense->information[0] << 24) | (sense->information[1] << 16) | (sense->information[2] << 8) | (sense->information[3]); - bio_sectors = bio_sectors(failed_command->bio); - if (bio_sectors < 4) - bio_sectors = 4; - if (drive->queue->hardsect_size == 2048) - sector <<= 2; /* Device sector size is 2K */ - sector &= ~(bio_sectors -1); - valid = (sector - failed_command->sector) << 9; - - if (valid < 0) - valid = 0; - 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); -} + if (queue_logical_block_size(drive->queue) == 2048) + /* device sector size is 2K */ + sector <<= 2; -/* - * Initialize a ide-cd packet command request - */ -void ide_cd_init_rq(ide_drive_t *drive, struct request *rq) -{ - struct cdrom_info *cd = drive->driver_data; - - ide_init_drive_cmd(rq); - rq->cmd_type = REQ_TYPE_ATA_PC; - rq->rq_disk = cd->disk; -} + bio_sectors = max(bio_sectors(failed_command->bio), 4U); + sector &= ~(bio_sectors - 1); -static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, - struct request *failed_command) -{ - struct cdrom_info *info = drive->driver_data; - struct request *rq = &info->request_sense_request; - - if (sense == NULL) - sense = &info->sense_data; - - /* stuff the sense request in front of our current request */ - ide_cd_init_rq(drive, rq); - - rq->data = sense; - rq->cmd[0] = GPCMD_REQUEST_SENSE; - rq->cmd[4] = rq->data_len = 18; - - rq->cmd_type = REQ_TYPE_SENSE; - - /* NOTE! Save the failed command in "rq->buffer" */ - rq->buffer = (void *) failed_command; - - (void) ide_do_drive_cmd(drive, rq, ide_preempt); -} - -static void cdrom_end_request (ide_drive_t *drive, int uptodate) -{ - struct request *rq = HWGROUP(drive)->rq; - int nsectors = rq->hard_cur_sectors; - - if (blk_sense_request(rq) && uptodate) { - /* - * For REQ_TYPE_SENSE, "rq->buffer" points to the original - * failed request - */ - struct request *failed = (struct request *) rq->buffer; - struct cdrom_info *info = drive->driver_data; - void *sense = &info->sense_data; - unsigned long flags; - - if (failed) { - if (failed->sense) { - sense = failed->sense; - failed->sense_len = rq->sense_len; - } - cdrom_analyze_sense_data(drive, failed, sense); /* - * now end failed request + * 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 (blk_fs_request(failed)) { - if (ide_end_dequeued_request(drive, failed, 0, - failed->hard_nr_sectors)) - BUG(); - } else { - spin_lock_irqsave(&ide_lock, flags); - if (__blk_end_request(failed, -EIO, - failed->data_len)) - BUG(); - spin_unlock_irqrestore(&ide_lock, flags); - } - } else - cdrom_analyze_sense_data(drive, NULL, sense); - } - - if (!rq->current_nr_sectors && blk_fs_request(rq)) - uptodate = 1; - /* make sure it's fully ended */ - if (blk_pc_request(rq)) - nsectors = (rq->data_len + 511) >> 9; - if (!nsectors) - nsectors = 1; - - ide_end_request(drive, uptodate, nsectors); -} - -static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) -{ - if (stat & 0x80) - return; - ide_dump_status(drive, msg, stat); -} - -/* Returns 0 if the request should be continued. - Returns 1 if the request was ended. */ -static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) -{ - struct request *rq = HWGROUP(drive)->rq; - int stat, err, sense_key; - - /* Check for errors. */ - stat = ide_read_status(drive); - - if (stat_ret) - *stat_ret = stat; - - if (OK_STAT(stat, good_stat, BAD_R_STAT)) - return 0; - - /* Get the IDE error register. */ - err = ide_read_error(drive); - sense_key = err >> 4; - - if (rq == NULL) { - printk("%s: missing rq in cdrom_decode_status\n", drive->name); - return 1; - } - - if (blk_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->cmd_flags |= REQ_FAILED; - cdrom_end_request(drive, 0); - ide_error(drive, "request sense failure", stat); - return 1; - - } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { - /* All other functions, except for READ. */ - - /* - * if we have an error, pass back CHECK_CONDITION as the - * scsi status byte - */ - if (blk_pc_request(rq) && !rq->errors) - rq->errors = SAM_STAT_CHECK_CONDITION; - - /* Check for tray open. */ - if (sense_key == NOT_READY) { - cdrom_saw_media_change (drive); - } else if (sense_key == UNIT_ATTENTION) { - /* Check for media change. */ - cdrom_saw_media_change (drive); - /*printk("%s: media changed\n",drive->name);*/ - return 0; - } else if ((sense_key == ILLEGAL_REQUEST) && - (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { - /* - * 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! - */ - } else if (!(rq->cmd_flags & REQ_QUIET)) { - /* Otherwise, print an error. */ - ide_dump_status(drive, "packet command error", stat); - } - - rq->cmd_flags |= REQ_FAILED; - - /* - * instead of playing games with moving completions around, - * remove failed request completely and end it when the - * request sense has completed - */ - goto end_request; - - } else if (blk_fs_request(rq)) { - int do_end_request = 0; - - /* Handle errors from READ and WRITE requests. */ - - if (blk_noretry_request(rq)) - do_end_request = 1; - - if (sense_key == NOT_READY) { - /* Tray open. */ - if (rq_data_dir(rq) == READ) { - cdrom_saw_media_change (drive); - - /* Fail the request. */ - printk ("%s: tray open\n", drive->name); - do_end_request = 1; - } else { - struct cdrom_info *info = drive->driver_data; - - /* allow the drive 5 seconds to recover, some - * devices will return this error while flushing - * data from cache */ - if (!rq->errors) - info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; - rq->errors = 1; - if (time_after(jiffies, info->write_timeout)) - do_end_request = 1; - else { - unsigned long flags; - - /* - * take a breather relying on the - * unplug timer to kick us again - */ - spin_lock_irqsave(&ide_lock, flags); - blk_plug_device(drive->queue); - spin_unlock_irqrestore(&ide_lock,flags); - return 1; - } - } - } else if (sense_key == UNIT_ATTENTION) { - /* Media change. */ - cdrom_saw_media_change (drive); - - /* Arrange to retry the request. - But be sure to give up if we've retried - too many times. */ - if (++rq->errors > ERROR_MAX) - do_end_request = 1; - } else if (sense_key == ILLEGAL_REQUEST || - sense_key == DATA_PROTECT) { - /* No point in retrying after an illegal - request or data protect error.*/ - ide_dump_status_no_sense (drive, "command error", stat); - do_end_request = 1; - } else if (sense_key == MEDIUM_ERROR) { - /* No point in re-trying a zillion times on a bad - * sector... If we got here the error is not correctable */ - ide_dump_status_no_sense (drive, "media error (bad sector)", stat); - do_end_request = 1; - } else if (sense_key == BLANK_CHECK) { - /* Disk appears blank ?? */ - ide_dump_status_no_sense (drive, "media error (blank)", stat); - do_end_request = 1; - } else if ((err & ~ABRT_ERR) != 0) { - /* Go to the default handler - for other errors. */ - ide_error(drive, "cdrom_decode_status", stat); - return 1; - } else if ((++rq->errors > ERROR_MAX)) { - /* We've racked up too many retries. Abort. */ - do_end_request = 1; + if (sector < get_capacity(info->disk) && + drive->probed_capacity - sector < 4 * 75) + set_capacity(info->disk, sector); } - - /* 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 & ERR_STAT) - cdrom_queue_request_sense(drive, NULL, NULL); - } else { - blk_dump_rq_flags(rq, "ide-cd: bad rq"); - cdrom_end_request(drive, 0); } - /* Retry, or handle the next request. */ - return 1; - -end_request: - if (stat & ERR_STAT) { - unsigned long flags; - - spin_lock_irqsave(&ide_lock, flags); - blkdev_dequeue_request(rq); - HWGROUP(drive)->rq = NULL; - spin_unlock_irqrestore(&ide_lock, flags); - - cdrom_queue_request_sense(drive, rq->sense, rq); - } else - cdrom_end_request(drive, 0); - - return 1; + ide_cd_log_error(drive->name, failed_command, sense); } -static int cdrom_timer_expiry(ide_drive_t *drive) +static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq) { - struct request *rq = HWGROUP(drive)->rq; - unsigned long wait = 0; - /* - * Some commands are *slow* and normally take a long time to - * complete. Usually we can use the ATAPI "disconnect" to bypass - * this, but not all commands/drives support that. Let - * ide_timer_expiry keep polling us for these. + * For REQ_TYPE_SENSE, "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. */ - switch (rq->cmd[0]) { - case GPCMD_BLANK: - case GPCMD_FORMAT_UNIT: - case GPCMD_RESERVE_RZONE_TRACK: - case GPCMD_CLOSE_TRACK: - case GPCMD_FLUSH_CACHE: - wait = ATAPI_WAIT_PC; - break; - default: - if (!(rq->cmd_flags & REQ_QUIET)) - printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); - wait = 0; - break; - } - return wait; -} - -/* Set up the device registers for transferring a packet command on DEV, - expecting to later transfer XFERLEN bytes. HANDLER is the routine - which actually transfers the command to the drive. If this is a - drq_interrupt device, this routine will arrange for HANDLER to be - called when the interrupt from the drive arrives. Otherwise, HANDLER - will be called immediately after the drive is prepared for the transfer. */ - -static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, - int xferlen, - ide_handler_t *handler) -{ - ide_startstop_t startstop; - struct cdrom_info *info = drive->driver_data; - ide_hwif_t *hwif = drive->hwif; - - /* Wait for the controller to be idle. */ - if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) - return startstop; - - /* FIXME: for Virtual DMA we must check harder */ - if (info->dma) - info->dma = !hwif->dma_setup(drive); + struct request *failed = (struct request *)rq->special; + void *sense = bio_data(rq->bio); - /* Set up the controller registers. */ - ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | - IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); - - if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { - /* waiting for CDB interrupt, not DMA yet. */ - if (info->dma) - drive->waiting_for_dma = 0; - - /* packet command */ - ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); - return ide_started; - } else { - unsigned long flags; - - /* packet command */ - spin_lock_irqsave(&ide_lock, flags); - hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); - ndelay(400); - spin_unlock_irqrestore(&ide_lock, flags); - - return (*handler) (drive); - } -} - -/* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. - The device registers must have already been prepared - by cdrom_start_packet_command. - HANDLER is the interrupt handler to call when the command completes - or there's data ready. */ -#define ATAPI_MIN_CDB_BYTES 12 -static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, - struct request *rq, - ide_handler_t *handler) -{ - ide_hwif_t *hwif = drive->hwif; - int cmd_len; - struct cdrom_info *info = drive->driver_data; - ide_startstop_t startstop; - - if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { - /* Here we should have been called after receiving an interrupt - from the device. DRQ should how be set. */ - - /* Check for errors. */ - if (cdrom_decode_status(drive, DRQ_STAT, NULL)) - return ide_stopped; - - /* Ok, next interrupt will be DMA interrupt. */ - if (info->dma) - drive->waiting_for_dma = 1; - } else { - /* Otherwise, we must wait for DRQ to get set. */ - if (ide_wait_stat(&startstop, drive, DRQ_STAT, - BUSY_STAT, WAIT_READY)) - return startstop; - } - - /* Arm the interrupt handler. */ - ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); - - /* ATAPI commands get padded out to 12 bytes minimum */ - cmd_len = COMMAND_SIZE(rq->cmd[0]); - if (cmd_len < ATAPI_MIN_CDB_BYTES) - cmd_len = ATAPI_MIN_CDB_BYTES; - - /* Send the command to the device. */ - HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); - - /* Start the DMA if need be */ - if (info->dma) - hwif->dma_start(drive); - - return ide_started; -} - -/**************************************************************************** - * Block read functions. - */ + if (failed) { + if (failed->sense) { + /* + * Sense is always read into drive->sense_data. + * Copy back if the failed request has its + * sense pointer set. + */ + memcpy(failed->sense, sense, 18); + failed->sense_len = rq->sense_len; + } + cdrom_analyze_sense_data(drive, failed); -static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) -{ - while (len > 0) { - int dum = 0; - xf(drive, &dum, sizeof(dum)); - len -= sizeof(dum); - } + if (ide_end_rq(drive, failed, -EIO, blk_rq_bytes(failed))) + BUG(); + } else + cdrom_analyze_sense_data(drive, NULL); } -static void ide_cd_drain_data(ide_drive_t *drive, int nsects) -{ - while (nsects > 0) { - static char dum[SECTOR_SIZE]; - - drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum)); - nsects--; - } -} /* - * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector - * buffer. Once the first sector is added, any subsequent sectors are - * assumed to be continuous (until the buffer is cleared). For the first - * sector added, SECTOR is its sector number. (SECTOR is then ignored until - * the buffer is cleared.) + * 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 void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, - int sectors_to_transfer) +static int ide_cd_breathe(ide_drive_t *drive, struct request *rq) { + struct cdrom_info *info = drive->driver_data; - /* Number of sectors to read into the buffer. */ - int sectors_to_buffer = min_t(int, sectors_to_transfer, - (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - - info->nsectors_buffered); - - char *dest; - - /* If we couldn't get a buffer, don't try to buffer anything... */ - if (info->buffer == NULL) - sectors_to_buffer = 0; - - /* If this is the first sector in the buffer, remember its number. */ - if (info->nsectors_buffered == 0) - info->sector_buffered = sector; - - /* Read the data into the buffer. */ - dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; - while (sectors_to_buffer > 0) { - HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); - --sectors_to_buffer; - --sectors_to_transfer; - ++info->nsectors_buffered; - dest += SECTOR_SIZE; - } + if (!rq->errors) + info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; - /* Throw away any remaining data. */ - ide_cd_drain_data(drive, sectors_to_transfer); -} + rq->errors = 1; -/* - * Check the contents of the interrupt reason register from the cdrom - * and attempt to recover if there are problems. Returns 0 if everything's - * ok; nonzero if the request has been terminated. - */ -static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, - int len, int ireason, int rw) -{ - /* - * ireason == 0: the drive wants to receive data from us - * ireason == 2: the drive is expecting to transfer data to us - */ - if (ireason == (!rw << 1)) + if (time_after(jiffies, info->write_timeout)) return 0; - else if (ireason == (rw << 1)) { - ide_hwif_t *hwif = drive->hwif; - xfer_func_t *xf; - - /* Whoops... */ - printk(KERN_ERR "%s: %s: wrong transfer direction!\n", - drive->name, __FUNCTION__); - - xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes; - ide_cd_pad_transfer(drive, xf, len); - } else if (rw == 0 && ireason == 1) { - /* Some drives (ASUS) seem to tell us that status - * info is available. just get it and ignore. + else { + /* + * take a breather */ - (void)ide_read_status(drive); - return 0; - } else { - /* Drive wants a command packet, or invalid ireason... */ - printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", - drive->name, __FUNCTION__, ireason); + blk_delay_queue(drive->queue, 1); + return 1; } - - if (rq->cmd_type == REQ_TYPE_ATA_PC) - rq->cmd_flags |= REQ_FAILED; - - cdrom_end_request(drive, 0); - return -1; } -/* - * Assume that the drive will always provide data in multiples of at least - * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. +/** + * 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 ide_cd_check_transfer_size(ide_drive_t *drive, int len) +static int cdrom_decode_status(ide_drive_t *drive, u8 stat) { - struct cdrom_info *cd = drive->driver_data; - - if ((len % SECTOR_SIZE) == 0) - return 0; - - printk(KERN_ERR "%s: %s: Bad transfer size %d\n", - drive->name, __FUNCTION__, len); - - if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) - printk(KERN_ERR " This drive is not supported by " - "this version of the driver\n"); - else { - printk(KERN_ERR " Trying to limit transfer sizes\n"); - cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; - } + ide_hwif_t *hwif = drive->hwif; + struct request *rq = hwif->rq; + int err, sense_key, do_end_request = 0; - return 1; -} + /* get the IDE error register */ + err = ide_read_error(drive); + sense_key = err >> 4; -/* - * Try to satisfy some of the current read request from our cached data. - * Returns nonzero if the request has been completed, zero otherwise. - */ -static int cdrom_read_from_buffer (ide_drive_t *drive) -{ - struct cdrom_info *info = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; - unsigned short sectors_per_frame; - - sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; - - /* Can't do anything if there's no buffer. */ - if (info->buffer == NULL) return 0; - - /* Loop while this request needs data and the next block is present - in our cache. */ - while (rq->nr_sectors > 0 && - rq->sector >= info->sector_buffered && - rq->sector < info->sector_buffered + info->nsectors_buffered) { - if (rq->current_nr_sectors == 0) - cdrom_end_request(drive, 1); - - memcpy (rq->buffer, - info->buffer + - (rq->sector - info->sector_buffered) * SECTOR_SIZE, - SECTOR_SIZE); - rq->buffer += SECTOR_SIZE; - --rq->current_nr_sectors; - --rq->nr_sectors; - ++rq->sector; - } + 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 we've satisfied the current request, - terminate it successfully. */ - if (rq->nr_sectors == 0) { - cdrom_end_request(drive, 1); - return -1; + if (rq->cmd_type == REQ_TYPE_SENSE) { + /* + * 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->cmd_flags |= REQ_FAILED; + return 2; } - /* Move on to the next buffer if needed. */ - if (rq->current_nr_sectors == 0) - cdrom_end_request(drive, 1); - - /* If this condition does not hold, then the kluge i use to - represent the number of sectors to skip at the start of a transfer - will fail. I think that this will never happen, but let's be - paranoid and check. */ - if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && - (rq->sector & (sectors_per_frame - 1))) { - printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", - drive->name, (long)rq->sector); - cdrom_end_request(drive, 0); - return -1; - } + /* if we have an error, pass CHECK_CONDITION as the SCSI status byte */ + if (rq->cmd_type == REQ_TYPE_BLOCK_PC && !rq->errors) + rq->errors = SAM_STAT_CHECK_CONDITION; - return 0; -} + if (blk_noretry_request(rq)) + do_end_request = 1; -static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); + switch (sense_key) { + case NOT_READY: + if (rq->cmd_type == REQ_TYPE_FS && rq_data_dir(rq) == WRITE) { + if (ide_cd_breathe(drive, rq)) + return 1; + } else { + cdrom_saw_media_change(drive); -/* - * Routine to send a read/write packet command to the drive. - * This is usually called directly from cdrom_start_{read,write}(). - * However, for drq_interrupt devices, it is called from an interrupt - * when the drive is ready to accept the command. - */ -static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) -{ - struct request *rq = HWGROUP(drive)->rq; + if (rq->cmd_type == REQ_TYPE_FS && + !(rq->cmd_flags & REQ_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 (rq_data_dir(rq) == READ) { - unsigned short sectors_per_frame = - queue_hardsect_size(drive->queue) >> SECTOR_BITS; - int nskip = rq->sector & (sectors_per_frame - 1); + if (rq->cmd_type != REQ_TYPE_FS) + return 0; /* - * If the requested sector doesn't start on a frame boundary, - * we must adjust the start of the transfer so that it does, - * and remember to skip the first few sectors. + * Arrange to retry the request but be sure to give up if we've + * retried too many times. + */ + if (++rq->errors > 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. * - * If the rq->current_nr_sectors field is larger than the size - * of the buffer, it will mean that we're to skip a number of - * sectors equal to the amount by which rq->current_nr_sectors - * is larger than the buffer size. + * cdrom_log_sense() knows this! */ - if (nskip > 0) { - /* Sanity check... */ - if (rq->current_nr_sectors != - bio_cur_sectors(rq->bio)) { - printk(KERN_ERR "%s: %s: buffer botch (%u)\n", - drive->name, __FUNCTION__, - rq->current_nr_sectors); - cdrom_end_request(drive, 0); - return ide_stopped; - } - rq->current_nr_sectors += nskip; - } + if (rq->cmd[0] == GPCMD_START_STOP_UNIT) + break; + /* fall-through */ + case DATA_PROTECT: + /* + * No point in retrying after an illegal request or data + * protect error. + */ + if (!(rq->cmd_flags & REQ_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->cmd_flags & REQ_QUIET)) + ide_dump_status(drive, "media error " + "(bad sector)", stat); + do_end_request = 1; + break; + case BLANK_CHECK: + /* disk appears blank? */ + if (!(rq->cmd_flags & REQ_QUIET)) + ide_dump_status(drive, "media error (blank)", + stat); + do_end_request = 1; + break; + default: + if (rq->cmd_type != REQ_TYPE_FS) + break; + if (err & ~ATA_ABORTED) { + /* go to the default handler for other errors */ + ide_error(drive, "cdrom_decode_status", stat); + return 1; + } else if (++rq->errors > ERROR_MAX) + /* we've racked up too many retries, abort */ + do_end_request = 1; } -#if 0 - else - /* the immediate bit */ - rq->cmd[1] = 1 << 3; -#endif - /* Set up the command */ - rq->timeout = ATAPI_WAIT_PC; - - /* Send the command to the drive and return. */ - return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); -} - -#define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ -#define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ -#define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ -static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) -{ - struct cdrom_info *info = drive->driver_data; - int stat; - static int retry = 10; - - if (cdrom_decode_status(drive, 0, &stat)) - return ide_stopped; - - info->cd_flags |= IDE_CD_FLAG_SEEKING; - - if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { - if (--retry == 0) { - /* - * this condition is far too common, to bother - * users about it - */ - /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ - drive->dsc_overlap = 0; - } + if (rq->cmd_type != REQ_TYPE_FS) { + rq->cmd_flags |= REQ_FAILED; + do_end_request = 1; } - return ide_stopped; -} - -static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) -{ - struct request *rq = HWGROUP(drive)->rq; - sector_t frame = rq->sector; - - sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); - - memset(rq->cmd, 0, sizeof(rq->cmd)); - rq->cmd[0] = GPCMD_SEEK; - put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); - rq->timeout = ATAPI_WAIT_PC; - return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); -} + /* + * 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; -static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) -{ - struct cdrom_info *info = drive->driver_data; + /* 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; - info->dma = 0; - info->start_seek = jiffies; - return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); +end_request: + if (stat & ATA_ERR) { + hwif->rq = NULL; + return ide_queue_sense_rq(drive, rq) ? 2 : 1; + } else + return 2; } -/* Fix up a possibly partially-processed request so that we can - start it over entirely, or even put it back on the request queue. */ -static void restore_request (struct request *rq) +static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd) { - if (rq->buffer != bio_data(rq->bio)) { - sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; + struct request *rq = cmd->rq; - rq->buffer = bio_data(rq->bio); - rq->nr_sectors += n; - rq->sector -= n; - } - rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); - rq->hard_nr_sectors = rq->nr_sectors; - rq->hard_sector = rq->sector; - rq->q->prep_rq_fn(rq->q, rq); -} - -/**************************************************************************** - * Execute all other packet commands. - */ + ide_debug_log(IDE_DBG_FUNC, "rq->cmd[0]: 0x%x", rq->cmd[0]); -static void ide_cd_request_sense_fixup(struct request *rq) -{ /* * Some of the trailing request sense fields are optional, * and some drives don't send them. Sigh. */ if (rq->cmd[0] == GPCMD_REQUEST_SENSE && - rq->data_len > 0 && rq->data_len <= 5) - while (rq->data_len > 0) { - *(u8 *)rq->data++ = 0; - --rq->data_len; - } + cmd->nleft > 0 && cmd->nleft <= 5) + cmd->nleft = 0; } -int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq) +int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, + int write, void *buffer, unsigned *bufflen, + struct request_sense *sense, int timeout, + unsigned int cmd_flags) { - struct request_sense sense; + struct cdrom_info *info = drive->driver_data; + struct request_sense local_sense; int retries = 10; - unsigned int flags = rq->cmd_flags; + unsigned int flags = 0; - if (rq->sense == NULL) - rq->sense = &sense; + if (!sense) + sense = &local_sense; - /* Start of retry loop. */ + ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, " + "cmd_flags: 0x%x", + cmd[0], write, timeout, cmd_flags); + + /* start of retry loop */ do { + struct request *rq; int error; - unsigned long time = jiffies; - rq->cmd_flags = flags; - error = ide_do_drive_cmd(drive, rq, ide_wait); - time = jiffies - time; + rq = blk_get_request(drive->queue, write, __GFP_WAIT); + + memcpy(rq->cmd, cmd, BLK_MAX_CDB); + rq->cmd_type = REQ_TYPE_ATA_PC; + rq->sense = sense; + rq->cmd_flags |= cmd_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; + } + } + + error = blk_execute_rq(drive->queue, info->disk, rq, 0); + + if (buffer) + *bufflen = rq->resid_len; - /* FIXME: we should probably abort/retry or something - * in case of failure */ - if (rq->cmd_flags & REQ_FAILED) { - /* The request failed. Retry if it was due to a unit - attention status - (usually means media was changed). */ - struct request_sense *reqbuf = rq->sense; + flags = rq->cmd_flags; + blk_put_request(rq); + + /* + * FIXME: we should probably abort/retry or something in case of + * failure. + */ + if (flags & REQ_FAILED) { + /* + * The request failed. Retry if it was due to a unit + * attention status (usually means media was changed). + */ + struct request_sense *reqbuf = sense; if (reqbuf->sense_key == UNIT_ATTENTION) cdrom_saw_media_change(drive); else if (reqbuf->sense_key == NOT_READY && reqbuf->asc == 4 && reqbuf->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. */ + /* + * The drive is in the process of loading + * a disk. Retry, but wait a little to give + * the drive time to complete the load. + */ ssleep(2); } else { - /* Otherwise, don't retry. */ + /* otherwise, don't retry */ retries = 0; } --retries; } - /* End of retry loop. */ - } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); + /* end of retry loop */ + } while ((flags & REQ_FAILED) && retries >= 0); - /* Return an error if the command failed. */ - return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; + /* return an error if the command failed */ + return (flags & REQ_FAILED) ? -EIO : 0; } /* - * Called from blk_end_request_callback() after the data of the request - * is completed and before the request is completed. - * By returning value '1', blk_end_request_callback() returns immediately - * without completing the request. + * returns true if rq has been completed */ -static int cdrom_newpc_intr_dummy_cb(struct request *rq) +static bool ide_cd_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd) { - return 1; + 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, 0, nr_bytes); + return true; + } + + return false; } static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) { - struct cdrom_info *info = drive->driver_data; - struct request *rq = HWGROUP(drive)->rq; - xfer_func_t *xferfunc; + 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, stat, ireason, len, thislen, uptodate = 0; - int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; + int dma_error = 0, dma, thislen, uptodate = 0; + int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0; + int sense = (rq->cmd_type == REQ_TYPE_SENSE); unsigned int timeout; - u8 lowcyl, highcyl; + 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 = info->dma; + /* check for errors */ + dma = drive->dma; if (dma) { - info->dma = 0; - dma_error = HWIF(drive)->ide_dma_end(drive); + 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 "%s: DMA %s error\n", drive->name, + printk(KERN_ERR PFX "%s: DMA %s error\n", drive->name, write ? "write" : "read"); ide_dma_off(drive); } } - if (cdrom_decode_status(drive, 0, &stat)) - return ide_stopped; + /* check status */ + stat = hwif->tp_ops->read_status(hwif); - /* - * using dma, transfer is complete now - */ - if (dma) { - if (dma_error) - return ide_error(drive, "dma error", stat); - if (blk_fs_request(rq)) { - ide_end_request(drive, 1, rq->nr_sectors); + 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; } - goto end_request; } - /* - * ok we fall to pio :/ - */ - ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; - lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); - highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); + /* using dma, transfer is complete now */ + if (dma) { + if (dma_error) + return ide_error(drive, "dma error", stat); + uptodate = 1; + goto out_end; + } - len = lowcyl + (256 * highcyl); + ide_read_bcount_and_ireason(drive, &len, &ireason); - thislen = blk_fs_request(rq) ? len : rq->data_len; + thislen = (rq->cmd_type == REQ_TYPE_FS) ? len : cmd->nleft; if (thislen > len) thislen = len; - /* - * If DRQ is clear, the command has completed. - */ - if ((stat & DRQ_STAT) == 0) { - if (blk_fs_request(rq)) { + 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) { + if (rq->cmd_type == REQ_TYPE_FS) { /* * If we're not done reading/writing, complain. * Otherwise, complete the command normally. */ uptodate = 1; - if (rq->current_nr_sectors > 0) { - printk(KERN_ERR "%s: %s: data underrun " - "(%d blocks)\n", - drive->name, __FUNCTION__, - rq->current_nr_sectors); + if (cmd->nleft > 0) { + printk(KERN_ERR PFX "%s: %s: data underrun " + "(%u bytes)\n", drive->name, __func__, + cmd->nleft); if (!write) rq->cmd_flags |= REQ_FAILED; uptodate = 0; } - cdrom_end_request(drive, uptodate); - return ide_stopped; - } else if (!blk_pc_request(rq)) { - ide_cd_request_sense_fixup(rq); - /* Complain if we still have data left to transfer. */ - uptodate = rq->data_len ? 0 : 1; - } - goto end_request; - } + } else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) { + ide_cd_request_sense_fixup(drive, cmd); - /* - * check which way to transfer data - */ - if (ide_cd_check_ireason(drive, rq, len, ireason, write)) - return ide_stopped; - - if (blk_fs_request(rq)) { - if (write == 0) { - int nskip; - - if (ide_cd_check_transfer_size(drive, len)) { - cdrom_end_request(drive, 0); - return ide_stopped; - } + uptodate = cmd->nleft ? 0 : 1; /* - * First, figure out if we need to bit-bucket - * any of the leading sectors. + * suck out the remaining bytes from the drive in an + * attempt to complete the data xfer. (see BZ#13399) */ - nskip = min_t(int, rq->current_nr_sectors - - bio_cur_sectors(rq->bio), - thislen >> 9); - if (nskip > 0) { - ide_cd_drain_data(drive, nskip); - rq->current_nr_sectors -= nskip; - thislen -= (nskip << 9); + if (!(stat & ATA_ERR) && !uptodate && thislen) { + ide_pio_bytes(drive, cmd, write, thislen); + uptodate = cmd->nleft ? 0 : 1; } + + if (!uptodate) + rq->cmd_flags |= REQ_FAILED; } + goto out_end; } - if (ireason == 0) { - write = 1; - xferfunc = HWIF(drive)->atapi_output_bytes; - } else { - write = 0; - xferfunc = HWIF(drive)->atapi_input_bytes; - } + rc = ide_check_ireason(drive, rq, len, ireason, write); + if (rc) + goto out_end; - /* - * transfer data - */ - while (thislen > 0) { - u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; - int blen = rq->data_len; + cmd->last_xfer_len = 0; - /* - * bio backed? - */ - if (rq->bio) { - if (blk_fs_request(rq)) { - ptr = rq->buffer; - blen = rq->current_nr_sectors << 9; - } else { - ptr = bio_data(rq->bio); - blen = bio_iovec(rq->bio)->bv_len; - } - } + ide_debug_log(IDE_DBG_PC, "data transfer, rq->cmd_type: 0x%x, " + "ireason: 0x%x", + rq->cmd_type, ireason); - if (!ptr) { - if (blk_fs_request(rq) && !write) - /* - * If the buffers are full, cache the rest - * of the data in our internal buffer. - */ - cdrom_buffer_sectors(drive, rq->sector, - thislen >> 9); - else { - printk(KERN_ERR "%s: confused, missing data\n", - drive->name); - blk_dump_rq_flags(rq, rq_data_dir(rq) - ? "cdrom_newpc_intr, write" - : "cdrom_newpc_intr, read"); - } - break; - } + /* transfer data */ + while (thislen > 0) { + int blen = min_t(int, thislen, cmd->nleft); - if (blen > thislen) - blen = thislen; + if (cmd->nleft == 0) + break; - xferfunc(drive, ptr, blen); + ide_pio_bytes(drive, cmd, write, blen); + cmd->last_xfer_len += blen; thislen -= blen; len -= blen; - if (blk_fs_request(rq)) { - rq->buffer += blen; - rq->nr_sectors -= (blen >> 9); - rq->current_nr_sectors -= (blen >> 9); - rq->sector += (blen >> 9); - - if (rq->current_nr_sectors == 0 && rq->nr_sectors) - cdrom_end_request(drive, 1); - } else { - rq->data_len -= blen; - - /* - * The request can't be completed until DRQ is cleared. - * So complete the data, but don't complete the request - * using the dummy function for the callback feature - * of blk_end_request_callback(). - */ - if (rq->bio) - blk_end_request_callback(rq, 0, blen, - cdrom_newpc_intr_dummy_cb); - else - rq->data += blen; - } - if (!write && blk_sense_request(rq)) + if (sense && write == 0) rq->sense_len += blen; } - /* - * pad, if necessary - */ - if (!blk_fs_request(rq) && len > 0) - ide_cd_pad_transfer(drive, xferfunc, len); + /* pad, if necessary */ + if (len > 0) { + if (rq->cmd_type != REQ_TYPE_FS || 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"); + } + } - if (blk_pc_request(rq)) { + if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { timeout = rq->timeout; } else { timeout = ATAPI_WAIT_PC; - if (!blk_fs_request(rq)) - expiry = cdrom_timer_expiry; + if (rq->cmd_type != REQ_TYPE_FS) + expiry = ide_cd_expiry; } - ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); + hwif->expiry = expiry; + ide_set_handler(drive, cdrom_newpc_intr, timeout); return ide_started; -end_request: - if (blk_pc_request(rq)) { - unsigned long flags; - unsigned int dlen = rq->data_len; +out_end: + if (rq->cmd_type == REQ_TYPE_BLOCK_PC && rc == 0) { + rq->resid_len = 0; + blk_end_request_all(rq, 0); + hwif->rq = NULL; + } else { + if (sense && uptodate) + ide_cd_complete_failed_rq(drive, rq); - if (dma) - rq->data_len = 0; + if (rq->cmd_type == REQ_TYPE_FS) { + if (cmd->nleft == 0) + uptodate = 1; + } else { + if (uptodate <= 0 && rq->errors == 0) + rq->errors = -EIO; + } - spin_lock_irqsave(&ide_lock, flags); - if (__blk_end_request(rq, 0, dlen)) - BUG(); - HWGROUP(drive)->rq = NULL; - spin_unlock_irqrestore(&ide_lock, flags); - } else { - if (!uptodate) - rq->cmd_flags |= REQ_FAILED; - cdrom_end_request(drive, uptodate); + if (uptodate == 0 && rq->bio) + if (ide_cd_error_cmd(drive, cmd)) + return ide_stopped; + + /* make sure it's fully ended */ + if (rq->cmd_type != REQ_TYPE_FS) { + rq->resid_len -= cmd->nbytes - cmd->nleft; + if (uptodate == 0 && (cmd->tf_flags & IDE_TFLAG_WRITE)) + rq->resid_len += cmd->last_xfer_len; + } + + ide_complete_rq(drive, uptodate ? 0 : -EIO, blk_rq_bytes(rq)); + + if (sense && rc == 2) + ide_error(drive, "request sense failure", stat); } return ide_stopped; } @@ -1223,82 +701,63 @@ end_request: 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_hardsect_size(drive->queue) >> SECTOR_BITS; + queue_logical_block_size(q) >> SECTOR_BITS; + + 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 (cd->disk->policy) { - cdrom_end_request(drive, 0); + /* 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. */ - restore_request(rq); - - /* Satisfy whatever we can of this request from our cache. */ - if (cdrom_read_from_buffer(drive)) - return ide_stopped; + q->prep_rq_fn(q, rq); } - /* - * use DMA, if possible / writes *must* be hardware frame aligned - */ - if ((rq->nr_sectors & (sectors_per_frame - 1)) || - (rq->sector & (sectors_per_frame - 1))) { - if (write) { - cdrom_end_request(drive, 0); - return ide_stopped; - } - cd->dma = 0; - } else - cd->dma = drive->using_dma; + /* 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; - /* Clear the local sector buffer. */ - cd->nsectors_buffered = 0; + /* use DMA, if possible */ + drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); if (write) cd->devinfo.media_written = 1; - /* Start sending the read/write request to the drive. */ - return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); -} - -static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) -{ - struct request *rq = HWGROUP(drive)->rq; - - if (!rq->timeout) - rq->timeout = ATAPI_WAIT_PC; + rq->timeout = ATAPI_WAIT_PC; - return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); + return ide_started; } -static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) +static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) { - struct cdrom_info *info = drive->driver_data; - if (blk_pc_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 (rq->cmd_type == REQ_TYPE_BLOCK_PC) rq->cmd_flags |= REQ_QUIET; else rq->cmd_flags &= ~REQ_FAILED; - info->dma = 0; + drive->dma = 0; - /* - * sg request - */ + /* sg request */ if (rq->bio) { - int mask = drive->queue->dma_alignment; - unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); + struct request_queue *q = drive->queue; + char *buf = bio_data(rq->bio); + unsigned int alignment; - info->dma = drive->using_dma; + drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA); /* * check if dma is safe @@ -1306,98 +765,109 @@ static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) * NOTE! The "len" and "addr" checks should possibly have * separate masks. */ - if ((rq->data_len & 15) || (addr & mask)) - info->dma = 0; + 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; } - - /* Start sending the command to the drive. */ - return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); } -/**************************************************************************** - * cdrom driver request routine. - */ -static ide_startstop_t -ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) +static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, + sector_t block) { - ide_startstop_t action; - struct cdrom_info *info = drive->driver_data; + struct ide_cmd cmd; + int uptodate = 0; + unsigned int nsectors; - if (blk_fs_request(rq)) { - if (info->cd_flags & IDE_CD_FLAG_SEEKING) { - unsigned long elapsed = jiffies - info->start_seek; - int stat = ide_read_status(drive); - - if ((stat & SEEK_STAT) != SEEK_STAT) { - if (elapsed < IDECD_SEEK_TIMEOUT) { - ide_stall_queue(drive, IDECD_SEEK_TIMER); - return ide_stopped; - } - printk (KERN_ERR "%s: DSC timeout\n", drive->name); - } - info->cd_flags &= ~IDE_CD_FLAG_SEEKING; - } - if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { - action = cdrom_start_seek(drive, block); - } else - action = cdrom_start_rw(drive, rq); - info->last_block = block; - return action; - } else if (blk_sense_request(rq) || blk_pc_request(rq) || - rq->cmd_type == REQ_TYPE_ATA_PC) { - return cdrom_do_block_pc(drive, rq); - } else if (blk_special_request(rq)) { - /* - * right now this can only be a reset... - */ - cdrom_end_request(drive, 1); - return ide_stopped; + 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 (rq->cmd_type) { + case REQ_TYPE_FS: + if (cdrom_start_rw(drive, rq) == ide_stopped) + goto out_end; + break; + case REQ_TYPE_SENSE: + case REQ_TYPE_BLOCK_PC: + case REQ_TYPE_ATA_PC: + if (!rq->timeout) + rq->timeout = ATAPI_WAIT_PC; + + cdrom_do_block_pc(drive, rq); + break; + case REQ_TYPE_SPECIAL: + /* right now this can only be a reset... */ + uptodate = 1; + goto out_end; + default: + BUG(); } - blk_dump_rq_flags(rq, "ide-cd bad flags"); - cdrom_end_request(drive, 0); - return ide_stopped; -} + /* 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 (rq->cmd_type == REQ_TYPE_FS || 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 ? 0 : -EIO, 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. + * 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) +static void msf_from_bcd(struct atapi_msf *msf) { - msf->minute = BCD2BIN(msf->minute); - msf->second = BCD2BIN(msf->second); - msf->frame = BCD2BIN(msf->frame); + msf->minute = bcd2bin(msf->minute); + msf->second = bcd2bin(msf->second); + msf->frame = bcd2bin(msf->frame); } int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) { - struct request req; struct cdrom_info *info = drive->driver_data; struct cdrom_device_info *cdi = &info->devinfo; + unsigned char cmd[BLK_MAX_CDB]; - ide_cd_init_rq(drive, &req); + ide_debug_log(IDE_DBG_FUNC, "enter"); - req.sense = sense; - req.cmd[0] = GPCMD_TEST_UNIT_READY; - req.cmd_flags |= REQ_QUIET; + 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. + * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs + * instead of supporting the LOAD_UNLOAD opcode. */ - req.cmd[7] = cdi->sanyo_slot % 3; + cmd[7] = cdi->sanyo_slot % 3; - return ide_cd_queue_pc(drive, &req); + return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET); } static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, @@ -1405,53 +875,75 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, struct request_sense *sense) { struct { - __u32 lba; - __u32 blocklen; + __be32 lba; + __be32 blocklen; } capbuf; int stat; - struct request req; + unsigned char cmd[BLK_MAX_CDB]; + unsigned len = sizeof(capbuf); + u32 blocklen; - ide_cd_init_rq(drive, &req); + ide_debug_log(IDE_DBG_FUNC, "enter"); - req.sense = sense; - req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; - req.data = (char *)&capbuf; - req.data_len = sizeof(capbuf); - req.cmd_flags |= REQ_QUIET; + memset(cmd, 0, BLK_MAX_CDB); + cmd[0] = GPCMD_READ_CDVD_CAPACITY; - stat = ide_cd_queue_pc(drive, &req); - if (stat == 0) { - *capacity = 1 + be32_to_cpu(capbuf.lba); - *sectors_per_frame = - be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; + stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0, + REQ_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_BITS) << SECTOR_BITS; + 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; } - return stat; + *capacity = 1 + be32_to_cpu(capbuf.lba); + *sectors_per_frame = blocklen >> SECTOR_BITS; + + ide_debug_log(IDE_DBG_PROBE, "cap: %lu, sectors_per_frame: %lu", + *capacity, *sectors_per_frame); + + return 0; } static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, int format, char *buf, int buflen, struct request_sense *sense) { - struct request req; + unsigned char cmd[BLK_MAX_CDB]; + + ide_debug_log(IDE_DBG_FUNC, "enter"); - ide_cd_init_rq(drive, &req); + memset(cmd, 0, BLK_MAX_CDB); - req.sense = sense; - req.data = buf; - req.data_len = buflen; - req.cmd_flags |= REQ_QUIET; - req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; - req.cmd[6] = trackno; - req.cmd[7] = (buflen >> 8); - req.cmd[8] = (buflen & 0xff); - req.cmd[9] = (format << 6); + 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) - req.cmd[1] = 2; + cmd[1] = 2; - return ide_cd_queue_pc(drive, &req); + return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET); } /* Try to read the entire TOC for the disk into our internal buffer. */ @@ -1468,45 +960,50 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) 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. */ + /* try to allocate space */ toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); if (toc == NULL) { - printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); + 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. */ + /* + * Check to see if the existing data is still valid. If it is, + * just return. + */ (void) cdrom_check_status(drive, sense); - if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) + if (drive->atapi_flags & IDE_AFLAG_TOC_VALID) return 0; - /* Try to get the total cdrom capacity and sector size. */ + /* try to get the total cdrom capacity and sector size */ stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, sense); if (stat) toc->capacity = 0x1fffff; set_capacity(info->disk, toc->capacity * sectors_per_frame); - /* Save a private copy of te TOC capacity for error handling */ + /* save a private copy of the TOC capacity for error handling */ drive->probed_capacity = toc->capacity * sectors_per_frame; - blk_queue_hardsect_size(drive->queue, - sectors_per_frame << SECTOR_BITS); + blk_queue_logical_block_size(drive->queue, + sectors_per_frame << SECTOR_BITS); - /* First read just the header, so we know how long the TOC is. */ + /* first read just the header, so we know how long the TOC is */ stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, sizeof(struct atapi_toc_header), sense); if (stat) return stat; - if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { - toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); - toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); + 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; @@ -1515,7 +1012,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) if (ntracks > MAX_TRACKS) ntracks = MAX_TRACKS; - /* Now read the whole schmeer. */ + /* now read the whole schmeer */ stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, (char *)&toc->hdr, sizeof(struct atapi_toc_header) + @@ -1523,15 +1020,18 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) sizeof(struct atapi_toc_entry), sense); 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 */ + /* + * 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 = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, (char *)&toc->hdr, @@ -1542,9 +1042,9 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) if (stat) return stat; - if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { - toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); - toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); + 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; @@ -1556,25 +1056,24 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); - if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { - toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); - toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); + 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 (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { - if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) - toc->ent[i].track = BCD2BIN(toc->ent[i].track); + 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); + 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); } - /* Read the multisession information. */ if (toc->hdr.first_track != CDROM_LEADOUT) { - /* Read the multisession information. */ + /* read the multisession information */ stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, sizeof(ms_tmp), sense); if (stat) @@ -1582,26 +1081,27 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); } else { - ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; + 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 (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { - /* Re-read multisession information using MSF format */ + if (drive->atapi_flags & IDE_AFLAG_TOCADDR_AS_BCD) { + /* re-read multisession information using MSF format */ stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, sizeof(ms_tmp), sense); if (stat) return stat; - msf_from_bcd (&ms_tmp.ent.addr.msf); + 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.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. */ + /* 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; @@ -1610,7 +1110,7 @@ int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) } /* Remember that we've read this stuff. */ - info->cd_flags |= IDE_CD_FLAG_TOC_VALID; + drive->atapi_flags |= IDE_AFLAG_TOC_VALID; return 0; } @@ -1622,11 +1122,14 @@ int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) struct packet_command cgc; int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; - if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) + 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 (??) */ + 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; @@ -1639,19 +1142,21 @@ void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) struct cdrom_info *cd = drive->driver_data; u16 curspeed, maxspeed; - curspeed = *(u16 *)&buf[8 + 14]; - maxspeed = *(u16 *)&buf[8 + 8]; + ide_debug_log(IDE_DBG_FUNC, "enter"); - if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { - curspeed = le16_to_cpu(curspeed); - maxspeed = le16_to_cpu(maxspeed); + 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_cpu(curspeed); - maxspeed = be16_to_cpu(maxspeed); + curspeed = be16_to_cpup((__be16 *)&buf[8 + 14]); + maxspeed = be16_to_cpup((__be16 *)&buf[8 + 8]); } - cd->current_speed = (curspeed + (176/2)) / 176; - cd->max_speed = (maxspeed + (176/2)) / 176; + 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 \ @@ -1665,7 +1170,7 @@ static struct cdrom_device_ops ide_cdrom_dops = { .open = ide_cdrom_open_real, .release = ide_cdrom_release_real, .drive_status = ide_cdrom_drive_status, - .media_changed = ide_cdrom_check_media_change_real, + .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, @@ -1677,26 +1182,27 @@ static struct cdrom_device_ops ide_cdrom_dops = { .generic_packet = ide_cdrom_packet, }; -static int ide_cdrom_register (ide_drive_t *drive, int nslots) +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 (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) + if (drive->atapi_flags & IDE_AFLAG_NO_SPEED_SELECT) devinfo->mask |= CDC_SELECT_SPEED; devinfo->disk = info->disk; return register_cdrom(devinfo); } -static -int ide_cdrom_probe_capabilities (ide_drive_t *drive) +static int ide_cdrom_probe_capabilities(ide_drive_t *drive) { struct cdrom_info *cd = drive->driver_data; struct cdrom_device_info *cdi = &cd->devinfo; @@ -1704,28 +1210,31 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) 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 "%s: ATAPI magneto-optical drive\n", drive->name); + printk(KERN_ERR PFX "%s: ATAPI magneto-optical drive\n", + drive->name); return nslots; } - if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { - cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; + 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. + * 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; @@ -1734,9 +1243,9 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) return 0; if ((buf[8 + 6] & 0x01) == 0) - cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; + drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; if (buf[8 + 6] & 0x08) - cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; + drive->atapi_flags &= ~IDE_AFLAG_NO_EJECT; if (buf[8 + 3] & 0x01) cdi->mask &= ~CDC_CD_R; if (buf[8 + 3] & 0x02) @@ -1747,11 +1256,13 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); if (buf[8 + 3] & 0x10) cdi->mask &= ~CDC_DVD_R; - if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) + 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) + if (mechtype == mechtype_caddy || + mechtype == mechtype_popup || + (drive->atapi_flags & IDE_AFLAG_NO_AUTOCLOSE)) cdi->mask |= CDC_CLOSE_TRAY; if (cdi->sanyo_slot > 0) { @@ -1766,7 +1277,7 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) ide_cdrom_update_speed(drive, buf); - printk(KERN_INFO "%s: ATAPI", drive->name); + printk(KERN_INFO PFX "%s: ATAPI", drive->name); /* don't print speed if the drive reported 0 */ if (cd->max_speed) @@ -1777,7 +1288,7 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) 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"); + (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", @@ -1789,30 +1300,20 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive) else printk(KERN_CONT " drive"); - printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); + printk(KERN_CONT ", %dkB Cache\n", + be16_to_cpup((__be16 *)&buf[8 + 12])); return nslots; } -#ifdef CONFIG_IDE_PROC_FS -static void ide_cdrom_add_settings(ide_drive_t *drive) -{ - ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); -} -#else -static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } -#endif - -/* - * standard prep_rq_fn that builds 10 byte cmds - */ +/* standard prep_rq_fn that builds 10 byte cmds */ static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) { - int hard_sect = queue_hardsect_size(q); - long block = (long)rq->hard_sector / (hard_sect >> 9); - unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); + 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); - memset(rq->cmd, 0, sizeof(rq->cmd)); + memset(rq->cmd, 0, BLK_MAX_CDB); if (rq_data_dir(rq) == READ) rq->cmd[0] = GPCMD_READ_10; @@ -1844,9 +1345,7 @@ static int ide_cdrom_prep_pc(struct request *rq) { u8 *c = rq->cmd; - /* - * Transform 6-byte read/write commands to the 10-byte version - */ + /* 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]; @@ -1868,15 +1367,15 @@ static int ide_cdrom_prep_pc(struct request *rq) rq->errors = ILLEGAL_REQUEST; return BLKPREP_KILL; } - + return BLKPREP_OK; } static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) { - if (blk_fs_request(rq)) + if (rq->cmd_type == REQ_TYPE_FS) return ide_cdrom_prep_fs(q, rq); - else if (blk_pc_request(rq)) + else if (rq->cmd_type == REQ_TYPE_BLOCK_PC) return ide_cdrom_prep_pc(rq); return 0; @@ -1888,56 +1387,104 @@ struct cd_list_entry { 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, NULL)) + 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 int idecd_capacity_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, idecd_capacity_proc_show, PDE_DATA(inode)); +} + +static const struct file_operations idecd_capacity_proc_fops = { + .owner = THIS_MODULE, + .open = idecd_capacity_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static ide_proc_entry_t idecd_proc[] = { + { "capacity", S_IFREG|S_IRUGO, &idecd_capacity_proc_fops }, + {} +}; + +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[] = { - /* Limit transfer size per interrupt. */ - { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, - { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, /* SCR-3231 doesn't support the SET_CD_SPEED command. */ - { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, + { "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_CD_FLAG_TOCADDR_AS_BCD | - IDE_CD_FLAG_PRE_ATAPI12, }, + { "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_CD_FLAG_VERTOS_300_SSD, }, + { "V003S0DS", NULL, IDE_AFLAG_VERTOS_300_SSD, }, /* Vertos 600 ESD. */ - { "V006E0DS", NULL, IDE_CD_FLAG_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_CD_FLAG_SANYO_3CD }, - { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, - { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, + { "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_CD_FLAG_PRE_ATAPI12}, + { "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_CD_FLAG_FULL_CAPS_PAGE }, - { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, + { "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_CD_FLAG_LE_SPEED_FIELDS }, + { "", "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_CD_FLAG_PLAY_AUDIO_OK }, - { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, - { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, - { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, - { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, + { "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(struct hd_driveid *id) +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, id->model) == 0 && + if (strcmp(cle->id_model, (char *)&id[ATA_ID_PROD]) == 0 && (cle->id_firmware == NULL || - strstr(id->fw_rev, cle->id_firmware))) + strstr((char *)&id[ATA_ID_FW_REV], cle->id_firmware))) return cle->cd_flags; cle++; } @@ -1945,95 +1492,77 @@ static unsigned int ide_cd_flags(struct hd_driveid *id) return 0; } -static -int ide_cdrom_setup (ide_drive_t *drive) +static int ide_cdrom_setup(ide_drive_t *drive) { struct cdrom_info *cd = drive->driver_data; struct cdrom_device_info *cdi = &cd->devinfo; - struct hd_driveid *id = drive->id; + struct request_queue *q = drive->queue; + u16 *id = drive->id; + char *fw_rev = (char *)&id[ATA_ID_FW_REV]; int nslots; - blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); - blk_queue_dma_alignment(drive->queue, 31); - drive->queue->unplug_delay = (1 * HZ) / 1000; - if (!drive->queue->unplug_delay) - drive->queue->unplug_delay = 1; + ide_debug_log(IDE_DBG_PROBE, "enter"); - drive->special.all = 0; + blk_queue_prep_rq(q, ide_cdrom_prep_fn); + blk_queue_dma_alignment(q, 31); + blk_queue_update_dma_pad(q, 15); - cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | - ide_cd_flags(id); + drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED; + drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id); - if ((id->config & 0x0060) == 0x20) - cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; + 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; - if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && - id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') - cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | - IDE_CD_FLAG_TOCADDR_AS_BCD); - else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && - id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') - cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; - else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) - cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ - - nslots = ide_cdrom_probe_capabilities (drive); - - /* - * set correct block size - */ - blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); + nslots = ide_cdrom_probe_capabilities(drive); - if (drive->autotune == IDE_TUNE_DEFAULT || - drive->autotune == IDE_TUNE_AUTO) - drive->dsc_overlap = (drive->next != drive); + blk_queue_logical_block_size(q, CD_FRAMESIZE); if (ide_cdrom_register(drive, nslots)) { - printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); + 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_cdrom_add_settings(drive); - return 0; -} - -#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, NULL)) - return 0; - return capacity * sectors_per_frame; + ide_proc_register_driver(drive, cd->driver); + return 0; } -#endif static void ide_cd_remove(ide_drive_t *drive) { struct cdrom_info *info = drive->driver_data; - ide_proc_unregister_driver(drive, info->driver); + ide_debug_log(IDE_DBG_FUNC, "enter"); + ide_proc_unregister_driver(drive, info->driver); + device_del(&info->dev); del_gendisk(info->disk); - ide_cd_put(info); + mutex_lock(&idecd_ref_mutex); + put_device(&info->dev); + mutex_unlock(&idecd_ref_mutex); } -static void ide_cd_release(struct kref *kref) +static void ide_cd_release(struct device *dev) { - struct cdrom_info *info = to_ide_cd(kref); + 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; - kfree(info->buffer); + ide_debug_log(IDE_DBG_FUNC, "enter"); + kfree(info->toc); - if (devinfo->handle == drive && unregister_cdrom(devinfo)) - printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " - "driver.\n", __FUNCTION__, drive->name); - drive->dsc_overlap = 0; + if (devinfo->handle == drive) + unregister_cdrom(devinfo); drive->driver_data = NULL; blk_queue_prep_rq(drive->queue, NULL); g->private_data = NULL; @@ -2043,24 +1572,7 @@ static void ide_cd_release(struct kref *kref) static int ide_cd_probe(ide_drive_t *); -#ifdef CONFIG_IDE_PROC_FS -static int proc_idecd_read_capacity - (char *page, char **start, off_t off, int count, int *eof, void *data) -{ - ide_drive_t *drive = data; - int len; - - len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); - PROC_IDE_READ_RETURN(page,start,off,count,eof,len); -} - -static ide_proc_entry_t idecd_proc[] = { - { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, - { NULL, 0, NULL, NULL } -}; -#endif - -static ide_driver_t ide_cdrom_driver = { +static struct ide_driver ide_cdrom_driver = { .gen_driver = { .owner = THIS_MODULE, .name = "ide-cdrom", @@ -2069,48 +1581,40 @@ static ide_driver_t ide_cdrom_driver = { .probe = ide_cd_probe, .remove = ide_cd_remove, .version = IDECD_VERSION, - .media = ide_cdrom, - .supports_dsc_overlap = 1, - .do_request = ide_do_rw_cdrom, - .end_request = ide_end_request, - .error = __ide_error, - .abort = __ide_abort, + .do_request = ide_cd_do_request, #ifdef CONFIG_IDE_PROC_FS - .proc = idecd_proc, + .proc_entries = ide_cd_proc_entries, + .proc_devsets = ide_cd_proc_devsets, #endif }; -static int idecd_open(struct inode * inode, struct file * file) +static int idecd_open(struct block_device *bdev, fmode_t mode) { - struct gendisk *disk = inode->i_bdev->bd_disk; struct cdrom_info *info; - int rc = -ENOMEM; - - if (!(info = ide_cd_get(disk))) - return -ENXIO; + int rc = -ENXIO; - if (!info->buffer) - info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); - - if (info->buffer) - rc = cdrom_open(&info->devinfo, inode, file); + 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 int idecd_release(struct inode * inode, struct file * file) +static void idecd_release(struct gendisk *disk, fmode_t mode) { - struct gendisk *disk = inode->i_bdev->bd_disk; - struct cdrom_info *info = ide_cd_g(disk); + struct cdrom_info *info = ide_drv_g(disk, cdrom_info); - cdrom_release (&info->devinfo, file); + mutex_lock(&ide_cd_mutex); + cdrom_release(&info->devinfo, mode); ide_cd_put(info); - - return 0; + mutex_unlock(&ide_cd_mutex); } static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) @@ -2138,7 +1642,7 @@ static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) struct packet_command cgc; char buffer[16]; int stat; - char spindown; + char spindown; init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); @@ -2147,43 +1651,56 @@ static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) return stat; spindown = buffer[11] & 0x0f; - if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) + if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) return -EFAULT; return 0; } -static int idecd_ioctl (struct inode *inode, struct file *file, +static int idecd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { - struct block_device *bdev = inode->i_bdev; - struct cdrom_info *info = ide_cd_g(bdev->bd_disk); + struct cdrom_info *info = ide_drv_g(bdev->bd_disk, cdrom_info); int err; switch (cmd) { - case CDROMSETSPINDOWN: + case CDROMSETSPINDOWN: return idecd_set_spindown(&info->devinfo, arg); - case CDROMGETSPINDOWN: + case CDROMGETSPINDOWN: return idecd_get_spindown(&info->devinfo, arg); default: break; - } + } - err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); + err = generic_ide_ioctl(info->drive, bdev, cmd, arg); if (err == -EINVAL) - err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); + err = cdrom_ioctl(&info->devinfo, bdev, mode, cmd, arg); return err; } -static int idecd_media_changed(struct gendisk *disk) +static int idecd_ioctl(struct block_device *bdev, fmode_t mode, + unsigned int cmd, unsigned long arg) { - struct cdrom_info *info = ide_cd_g(disk); - return cdrom_media_changed(&info->devinfo); + int ret; + + mutex_lock(&ide_cd_mutex); + ret = idecd_locked_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 int idecd_revalidate_disk(struct gendisk *disk) { - struct cdrom_info *info = ide_cd_g(disk); + struct cdrom_info *info = ide_drv_g(disk, cdrom_info); struct request_sense sense; ide_cd_read_toc(info->drive, &sense); @@ -2191,19 +1708,19 @@ static int idecd_revalidate_disk(struct gendisk *disk) return 0; } -static struct block_device_operations idecd_ops = { - .owner = THIS_MODULE, - .open = idecd_open, - .release = idecd_release, - .ioctl = idecd_ioctl, - .media_changed = idecd_media_changed, - .revalidate_disk= idecd_revalidate_disk +static const struct block_device_operations idecd_ops = { + .owner = THIS_MODULE, + .open = idecd_open, + .release = idecd_release, + .ioctl = idecd_ioctl, + .check_events = idecd_check_events, + .revalidate_disk = idecd_revalidate_disk }; -/* options */ -static char *ignore = NULL; +/* module options */ +static unsigned long debug_mask; +module_param(debug_mask, ulong, 0644); -module_param(ignore, charp, 0400); MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); static int ide_cd_probe(ide_drive_t *drive) @@ -2212,26 +1729,22 @@ static int ide_cd_probe(ide_drive_t *drive) struct gendisk *g; struct request_sense sense; + 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->present) - goto failed; + if (drive->media != ide_cdrom && drive->media != ide_optical) goto failed; - /* skip drives that we were told to ignore */ - if (ignore != NULL) { - if (strstr(ignore, drive->name)) { - printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); - goto failed; - } - } - if (drive->scsi) { - printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); - 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 "%s: Can't allocate a cdrom structure\n", drive->name); + printk(KERN_ERR PFX "%s: Can't allocate a cdrom structure\n", + drive->name); goto failed; } @@ -2241,9 +1754,12 @@ static int ide_cd_probe(ide_drive_t *drive) ide_init_disk(g, drive); - ide_proc_register_driver(drive, &ide_cdrom_driver); + info->dev.parent = &drive->gendev; + info->dev.release = ide_cd_release; + dev_set_name(&info->dev, "%s", dev_name(&drive->gendev)); - kref_init(&info->kref); + if (device_register(&info->dev)) + goto out_free_disk; info->drive = drive; info->driver = &ide_cdrom_driver; @@ -2257,17 +1773,18 @@ static int ide_cd_probe(ide_drive_t *drive) g->driverfs_dev = &drive->gendev; g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; if (ide_cdrom_setup(drive)) { - ide_proc_unregister_driver(drive, &ide_cdrom_driver); - ide_cd_release(&info->kref); + put_device(&info->dev); goto failed; } ide_cd_read_toc(drive, &sense); g->fops = &idecd_ops; - g->flags |= GENHD_FL_REMOVABLE; + g->flags |= GENHD_FL_REMOVABLE | GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE; add_disk(g); return 0; +out_free_disk: + put_disk(g); out_free_cd: kfree(info); failed: @@ -2281,6 +1798,7 @@ static void __exit ide_cdrom_exit(void) static int __init ide_cdrom_init(void) { + printk(KERN_INFO DRV_NAME " driver " IDECD_VERSION "\n"); return driver_register(&ide_cdrom_driver.gen_driver); } |