*
* 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
+ * 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
#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/irq.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(idecd_ref_mutex);
-#define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref)
+#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)
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;
}
static int cdrom_log_sense(ide_drive_t *drive, struct request *rq,
return 0;
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,
+static void cdrom_analyze_sense_data(ide_drive_t *drive,
struct request *failed_command,
struct request_sense *sense)
{
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 (bio_sectors < 4)
bio_sectors = 4;
if (drive->queue->hardsect_size == 2048)
- sector <<= 2; /* Device sector size is 2K */
- sector &= ~(bio_sectors -1);
+ /* device sector size is 2K */
+ sector <<= 2;
+ 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) {
+ drive->probed_capacity - sector < 4 * 75)
set_capacity(info->disk, sector);
- }
- }
- }
+ }
+ }
ide_cd_log_error(drive->name, failed_command, sense);
}
-/*
- * Initialize a ide-cd packet command request
- */
+/* 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;
rq->data = sense;
rq->cmd[0] = GPCMD_REQUEST_SENSE;
- rq->cmd[4] = rq->data_len = 18;
+ rq->cmd[4] = 18;
+ rq->data_len = 18;
rq->cmd_type = REQ_TYPE_SENSE;
(void) ide_do_drive_cmd(drive, rq, ide_preempt);
}
-static void cdrom_end_request (ide_drive_t *drive, int uptodate)
+static void cdrom_end_request(ide_drive_t *drive, int uptodate)
{
struct request *rq = HWGROUP(drive)->rq;
int nsectors = rq->hard_cur_sectors;
}
cdrom_analyze_sense_data(drive, failed, sense);
/*
- * now end failed request
+ * now end the failed request
*/
if (blk_fs_request(failed)) {
if (ide_end_dequeued_request(drive, failed, 0,
ide_end_request(drive, uptodate, nsectors);
}
-static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat)
+static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
{
- if (stat & 0x80)
+ if (st & 0x80)
return;
- ide_dump_status(drive, msg, stat);
+ ide_dump_status(drive, msg, st);
}
-/* Returns 0 if the request should be continued.
- Returns 1 if the request was ended. */
+/*
+ * Returns:
+ * 0: if the request should be continued.
+ * 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. */
+
+ /* check for errors */
stat = ide_read_status(drive);
if (stat_ret)
if (OK_STAT(stat, good_stat, BAD_R_STAT))
return 0;
- /* Get the IDE error register. */
+ /* 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);
+ printk(KERN_ERR "%s: missing rq in %s\n",
+ drive->name, __func__);
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. */
-
+ /*
+ * 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);
if (blk_pc_request(rq) && !rq->errors)
rq->errors = SAM_STAT_CHECK_CONDITION;
- /* Check for tray open. */
+ /* check for tray open */
if (sense_key == NOT_READY) {
- cdrom_saw_media_change (drive);
+ 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);*/
+ /* check for media change */
+ cdrom_saw_media_change(drive);
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 (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. */
+ /* otherwise, print an error */
ide_dump_status(drive, "packet command error", stat);
}
-
+
rq->cmd_flags |= REQ_FAILED;
/*
} else if (blk_fs_request(rq)) {
int do_end_request = 0;
- /* Handle errors from READ and WRITE requests. */
+ /* handle errors from READ and WRITE requests */
if (blk_noretry_request(rq))
do_end_request = 1;
if (sense_key == NOT_READY) {
- /* Tray open. */
+ /* tray open */
if (rq_data_dir(rq) == READ) {
- cdrom_saw_media_change (drive);
+ cdrom_saw_media_change(drive);
- /* Fail the request. */
- printk ("%s: tray open\n", drive->name);
+ /* fail the request */
+ printk(KERN_ERR "%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
+ /*
+ * Allow the drive 5 seconds to recover, some
* devices will return this error while flushing
- * data from cache */
+ * data from cache.
+ */
if (!rq->errors)
- info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY;
+ info->write_timeout = jiffies +
+ ATAPI_WAIT_WRITE_BUSY;
rq->errors = 1;
if (time_after(jiffies, info->write_timeout))
do_end_request = 1;
unsigned long flags;
/*
- * take a breather relying on the
- * unplug timer to kick us again
+ * 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);
+ spin_unlock_irqrestore(&ide_lock,
+ flags);
return 1;
}
}
} else if (sense_key == UNIT_ATTENTION) {
- /* Media change. */
- cdrom_saw_media_change (drive);
+ /* 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. */
+ /*
+ * 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);
+ /*
+ * 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);
+ /*
+ * 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);
+ /* 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. */
+ /* 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. */
+ /* we've racked up too many retries, abort */
do_end_request = 1;
}
- /* End a request through request sense analysis when we have
- sense data. We need this in order to perform end of media
- processing */
-
+ /*
+ * 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 we got a CHECK_CONDITION status, queue
+ * a request sense command.
*/
if (stat & ERR_STAT)
cdrom_queue_request_sense(drive, NULL, NULL);
cdrom_end_request(drive, 0);
}
- /* Retry, or handle the next request. */
+ /* retry, or handle the next request */
return 1;
end_request:
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.
+ * 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.
*/
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;
+ 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. */
-
+/*
+ * 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)
struct cdrom_info *info = drive->driver_data;
ide_hwif_t *hwif = drive->hwif;
- /* Wait for the controller to be idle. */
+ /* 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);
+ info->dma = !hwif->dma_ops->dma_setup(drive);
- /* Set up the controller registers. */
+ /* 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);
drive->waiting_for_dma = 0;
/* packet command */
- ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry);
+ 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);
+ ide_execute_pkt_cmd(drive);
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. */
+/*
+ * 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,
+static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive,
struct request *rq,
ide_handler_t *handler)
{
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. */
+ /*
+ * Here we should have been called after receiving an interrupt
+ * from the device. DRQ should how be set.
+ */
- /* Check for errors. */
+ /* check for errors */
if (cdrom_decode_status(drive, DRQ_STAT, NULL))
return ide_stopped;
- /* Ok, next interrupt will be DMA interrupt. */
+ /* 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. */
+ /* 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. */
+ /* arm the interrupt handler */
ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry);
/* ATAPI commands get padded out to 12 bytes minimum */
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);
+ /* send the command to the device */
+ hwif->output_data(drive, NULL, rq->cmd, cmd_len);
- /* Start the DMA if need be */
+ /* start the DMA if need be */
if (info->dma)
- hwif->dma_start(drive);
+ hwif->dma_ops->dma_start(drive);
return ide_started;
}
-/****************************************************************************
+/*
* Block read functions.
*/
-
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));
+ xf(drive, NULL, &dum, sizeof(dum));
len -= sizeof(dum);
}
}
while (nsects > 0) {
static char dum[SECTOR_SIZE];
- drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum));
+ drive->hwif->input_data(drive, NULL, 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.)
- */
-static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
- int sectors_to_transfer)
-{
- 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;
- }
-
- /* Throw away any remaining data. */
- ide_cd_drain_data(drive, sectors_to_transfer);
-}
-
/*
* Check the contents of the interrupt reason register from the cdrom
* and attempt to recover if there are problems. Returns 0 if everything's
ide_hwif_t *hwif = drive->hwif;
xfer_func_t *xf;
- /* Whoops... */
+ /* whoops... */
printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
- drive->name, __FUNCTION__);
+ drive->name, __func__);
- xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes;
+ xf = rw ? hwif->output_data : hwif->input_data;
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.
+ /*
+ * Some drives (ASUS) seem to tell us that status info is
+ * available. Just get it and ignore.
*/
(void)ide_read_status(drive);
return 0;
} else {
- /* Drive wants a command packet, or invalid ireason... */
+ /* drive wants a command packet, or invalid ireason... */
printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
- drive->name, __FUNCTION__, ireason);
+ drive->name, __func__, ireason);
}
if (rq->cmd_type == REQ_TYPE_ATA_PC)
return 0;
printk(KERN_ERR "%s: %s: Bad transfer size %d\n",
- drive->name, __FUNCTION__, len);
+ drive->name, __func__, len);
if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES)
printk(KERN_ERR " This drive is not supported by "
return 1;
}
-/*
- * 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;
- }
-
- /* If we've satisfied the current request,
- terminate it successfully. */
- if (rq->nr_sectors == 0) {
- cdrom_end_request(drive, 1);
- return -1;
- }
-
- /* 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;
- }
-
- return 0;
-}
-
static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
/*
- * 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.
+ * 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)
{
* is larger than the buffer size.
*/
if (nskip > 0) {
- /* Sanity check... */
+ /* sanity check... */
if (rq->current_nr_sectors !=
bio_cur_sectors(rq->bio)) {
printk(KERN_ERR "%s: %s: buffer botch (%u)\n",
- drive->name, __FUNCTION__,
+ drive->name, __func__,
rq->current_nr_sectors);
cdrom_end_request(drive, 0);
return ide_stopped;
/* the immediate bit */
rq->cmd[1] = 1 << 3;
#endif
- /* Set up the command */
+ /* set up the command */
rq->timeout = ATAPI_WAIT_PC;
- /* Send the command to the drive and return. */
+ /* send the command to the drive and return */
return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr);
}
#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)
+static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive)
{
struct cdrom_info *info = drive->driver_data;
int stat;
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);*/
+ if (--retry == 0)
drive->dsc_overlap = 0;
- }
}
return ide_stopped;
}
-static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive)
+static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
sector_t frame = rq->sector;
return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr);
}
-static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block)
+static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block)
{
struct cdrom_info *info = drive->driver_data;
info->dma = 0;
info->start_seek = jiffies;
- return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation);
+ return cdrom_start_packet_command(drive, 0,
+ cdrom_start_seek_continuation);
}
-/* 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)
+/*
+ * 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)
{
if (rq->buffer != bio_data(rq->bio)) {
- sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE;
+ sector_t n =
+ (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE;
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->current_nr_sectors = bio_cur_sectors(rq->bio);
+ rq->hard_cur_sectors = rq->current_nr_sectors;
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.
+/*
+ * All other packet commands.
*/
-
static void ide_cd_request_sense_fixup(struct request *rq)
{
/*
if (rq->sense == NULL)
rq->sense = &sense;
- /* Start of retry loop. */
+ /* start of retry loop */
do {
int error;
unsigned long time = jiffies;
error = ide_do_drive_cmd(drive, rq, ide_wait);
time = jiffies - time;
- /* FIXME: we should probably abort/retry or something
- * in case of failure */
+ /*
+ * 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). */
+ /*
+ * The request failed. Retry if it was due to a unit
+ * attention status (usually means media was changed).
+ */
struct request_sense *reqbuf = rq->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. */
+ /* end of retry loop */
} while ((rq->cmd_flags & REQ_FAILED) && retries >= 0);
- /* Return an error if the command failed. */
+ /* return an error if the command failed */
return (rq->cmd_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.
+ * Called from blk_end_request_callback() after the data of the request is
+ * completed and before the request itself is completed. By returning value '1',
+ * blk_end_request_callback() returns immediately without completing it.
*/
static int cdrom_newpc_intr_dummy_cb(struct request *rq)
{
static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
struct cdrom_info *info = drive->driver_data;
struct request *rq = HWGROUP(drive)->rq;
xfer_func_t *xferfunc;
unsigned int timeout;
u8 lowcyl, highcyl;
- /* Check for errors. */
+ /* check for errors */
dma = info->dma;
if (dma) {
info->dma = 0;
- dma_error = HWIF(drive)->ide_dma_end(drive);
+ dma_error = hwif->dma_ops->dma_end(drive);
if (dma_error) {
printk(KERN_ERR "%s: DMA %s error\n", drive->name,
write ? "write" : "read");
if (cdrom_decode_status(drive, 0, &stat))
return ide_stopped;
- /*
- * using dma, transfer is complete now
- */
+ /* using dma, transfer is complete now */
if (dma) {
if (dma_error)
return ide_error(drive, "dma error", stat);
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);
+ /* ok we fall to pio :/ */
+ ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3;
+ lowcyl = hwif->INB(hwif->io_ports.lbam_addr);
+ highcyl = hwif->INB(hwif->io_ports.lbah_addr);
len = lowcyl + (256 * highcyl);
if (thislen > len)
thislen = len;
- /*
- * If DRQ is clear, the command has completed.
- */
+ /* If DRQ is clear, the command has completed. */
if ((stat & DRQ_STAT) == 0) {
if (blk_fs_request(rq)) {
/*
if (rq->current_nr_sectors > 0) {
printk(KERN_ERR "%s: %s: data underrun "
"(%d blocks)\n",
- drive->name, __FUNCTION__,
+ drive->name, __func__,
rq->current_nr_sectors);
if (!write)
rq->cmd_flags |= REQ_FAILED;
return ide_stopped;
} else if (!blk_pc_request(rq)) {
ide_cd_request_sense_fixup(rq);
- /* Complain if we still have data left to transfer. */
+ /* complain if we still have data left to transfer */
uptodate = rq->data_len ? 0 : 1;
}
goto end_request;
}
- /*
- * check which way to transfer data
- */
+ /* check which way to transfer data */
if (ide_cd_check_ireason(drive, rq, len, ireason, write))
return ide_stopped;
if (ireason == 0) {
write = 1;
- xferfunc = HWIF(drive)->atapi_output_bytes;
+ xferfunc = hwif->output_data;
} else {
write = 0;
- xferfunc = HWIF(drive)->atapi_input_bytes;
+ xferfunc = hwif->input_data;
}
- /*
- * transfer data
- */
+ /* transfer data */
while (thislen > 0) {
u8 *ptr = blk_fs_request(rq) ? NULL : rq->data;
int blen = rq->data_len;
- /*
- * bio backed?
- */
+ /* bio backed? */
if (rq->bio) {
if (blk_fs_request(rq)) {
ptr = rq->buffer;
if (!ptr) {
if (blk_fs_request(rq) && !write)
/*
- * If the buffers are full, cache the rest
- * of the data in our internal buffer.
+ * If the buffers are full, pipe the rest into
+ * oblivion.
*/
- cdrom_buffer_sectors(drive, rq->sector,
- thislen >> 9);
+ ide_cd_drain_data(drive, thislen >> 9);
else {
printk(KERN_ERR "%s: confused, missing data\n",
drive->name);
if (blen > thislen)
blen = thislen;
- xferfunc(drive, ptr, blen);
+ xferfunc(drive, NULL, ptr, blen);
thislen -= blen;
len -= blen;
rq->sense_len += blen;
}
- /*
- * pad, if necessary
- */
+ /* pad, if necessary */
if (!blk_fs_request(rq) && len > 0)
ide_cd_pad_transfer(drive, xferfunc, len);
queue_hardsect_size(drive->queue) >> SECTOR_BITS;
if (write) {
- /*
- * disk has become write protected
- */
+ /* disk has become write protected */
if (cd->disk->policy) {
cdrom_end_request(drive, 0);
return ide_stopped;
* 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;
}
- /*
- * use DMA, if possible / writes *must* be hardware frame aligned
- */
+ /* 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) {
} else
cd->dma = drive->using_dma;
- /* Clear the local sector buffer. */
- cd->nsectors_buffered = 0;
-
if (write)
cd->devinfo.media_written = 1;
- /* Start sending the read/write request to the drive. */
+ /* start sending the read/write request to the drive */
return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont);
}
info->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));
+ unsigned long addr =
+ (unsigned long)page_address(bio_page(rq->bio));
info->dma = drive->using_dma;
info->dma = 0;
}
- /* Start sending the command to the drive. */
- return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont);
+ /* 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_do_rw_cdrom(ide_drive_t *drive, struct request *rq,
+ sector_t block)
{
ide_startstop_t action;
struct cdrom_info *info = drive->driver_data;
if ((stat & SEEK_STAT) != SEEK_STAT) {
if (elapsed < IDECD_SEEK_TIMEOUT) {
- ide_stall_queue(drive, IDECD_SEEK_TIMER);
+ ide_stall_queue(drive,
+ IDECD_SEEK_TIMER);
return ide_stopped;
}
- printk (KERN_ERR "%s: DSC timeout\n", drive->name);
+ 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) {
+ 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
+ else
action = cdrom_start_rw(drive, rq);
info->last_block = block;
return action;
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...
- */
+ /* right now this can only be a reset... */
cdrom_end_request(drive, 1);
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);
req.cmd_flags |= REQ_QUIET;
/*
- * 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;
unsigned long sectors_per_frame = SECTORS_PER_FRAME;
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 "%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)
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);
- /* 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)
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) +
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,
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)
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 */
+ /* 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;
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;
.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;
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;
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 "%s: ATAPI magneto-optical drive\n",
+ drive->name);
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;
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);
{
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];
rq->errors = ILLEGAL_REQUEST;
return BLKPREP_KILL;
}
-
+
return BLKPREP_OK;
}
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 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 }
+};
+
+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
+
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 },
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;
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 */
+ /* 3 => use CD in slot 0 */
+ cdi->sanyo_slot = 3;
- nslots = ide_cdrom_probe_capabilities (drive);
+ nslots = ide_cdrom_probe_capabilities(drive);
- /*
- * set correct block size
- */
+ /* set correct block size */
blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE);
- if (drive->autotune == IDE_TUNE_DEFAULT ||
- drive->autotune == IDE_TUNE_AUTO)
- drive->dsc_overlap = (drive->next != drive);
+ drive->dsc_overlap = (drive->next != drive);
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 "%s: %s failed to register device with the"
+ " cdrom driver.\n", drive->name, __func__);
cd->devinfo.handle = NULL;
return 1;
}
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;
-}
-#endif
-
static void ide_cd_remove(ide_drive_t *drive)
{
struct cdrom_info *info = drive->driver_data;
ide_drive_t *drive = info->drive;
struct gendisk *g = info->disk;
- kfree(info->buffer);
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);
+ if (devinfo->handle == drive)
+ unregister_cdrom(devinfo);
drive->dsc_overlap = 0;
drive->driver_data = NULL;
blk_queue_prep_rq(drive->queue, NULL);
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 = {
.gen_driver = {
.owner = THIS_MODULE,
#endif
};
-static int idecd_open(struct inode * inode, struct file * file)
+static int idecd_open(struct inode *inode, struct file *file)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
struct cdrom_info *info;
int rc = -ENOMEM;
- if (!(info = ide_cd_get(disk)))
+ info = ide_cd_get(disk);
+ if (!info)
return -ENXIO;
- if (!info->buffer)
- info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT);
-
- if (info->buffer)
- rc = cdrom_open(&info->devinfo, inode, file);
+ rc = cdrom_open(&info->devinfo, inode, file);
if (rc < 0)
ide_cd_put(info);
return rc;
}
-static int idecd_release(struct inode * inode, struct file * file)
+static int idecd_release(struct inode *inode, struct file *file)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
struct cdrom_info *info = ide_cd_g(disk);
- cdrom_release (&info->devinfo, file);
+ cdrom_release(&info->devinfo, file);
ide_cd_put(info);
struct packet_command cgc;
char buffer[16];
int stat;
- char spindown;
+ char spindown;
init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN);
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_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct block_device *bdev = inode->i_bdev;
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);
if (err == -EINVAL)
}
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
+ .owner = THIS_MODULE,
+ .open = idecd_open,
+ .release = idecd_release,
+ .ioctl = idecd_ioctl,
+ .media_changed = idecd_media_changed,
+ .revalidate_disk = idecd_revalidate_disk
};
-/* options */
-static char *ignore = NULL;
+/* module options */
+static char *ignore;
module_param(ignore, charp, 0400);
MODULE_DESCRIPTION("ATAPI CD-ROM Driver");
/* 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);
+ 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);
+ printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi "
+ "emulation.\n", drive->name);
goto failed;
}
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 "%s: Can't allocate a cdrom structure\n",
+ drive->name);
goto failed;
}
git.openpandora.org / pandora-kernel.git / blobdiff