Commit d6251d44 authored by Borislav Petkov's avatar Borislav Petkov Committed by Bartlomiej Zolnierkiewicz
Browse files

ide-cd: convert to ide-atapi facilities



... and remove no longer needed cdrom_start_packet_command and
cdrom_transfer_packet_command.

Tested lightly with ide-cd and ide-floppy.
Signed-off-by: default avatarBorislav Petkov <petkovbb@gmail.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 1e91477a
......@@ -549,7 +549,10 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive)
}
/* Set the interrupt routine */
ide_set_handler(drive, ide_pc_intr, timeout, expiry);
ide_set_handler(drive,
(dev_is_idecd(drive) ? drive->irq_handler
: ide_pc_intr),
timeout, expiry);
/* Begin DMA, if necessary */
if (dev_is_idecd(drive)) {
......
......@@ -510,99 +510,6 @@ end_request:
return 1;
}
static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *);
static ide_startstop_t cdrom_newpc_intr(ide_drive_t *);
/*
* 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)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
int xferlen;
xferlen = ide_cd_get_xferlen(rq);
ide_debug_log(IDE_DBG_PC, "Call %s, xferlen: %d\n", __func__, xferlen);
/* FIXME: for Virtual DMA we must check harder */
if (drive->dma)
drive->dma = !hwif->dma_ops->dma_setup(drive);
/* set up the controller registers */
ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL,
xferlen, drive->dma);
if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
/* waiting for CDB interrupt, not DMA yet. */
if (drive->dma)
drive->waiting_for_dma = 0;
/* packet command */
ide_execute_command(drive, ATA_CMD_PACKET,
cdrom_transfer_packet_command,
ATAPI_WAIT_PC, ide_cd_expiry);
return ide_started;
} else {
ide_execute_pkt_cmd(drive);
return cdrom_transfer_packet_command(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)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
int cmd_len;
ide_startstop_t startstop;
ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__);
/* we must wait for DRQ to get set */
if (ide_wait_stat(&startstop, drive, ATA_DRQ, ATA_BUSY, WAIT_READY)) {
printk(KERN_ERR "%s: timeout while waiting for DRQ to assert\n",
drive->name);
return startstop;
}
if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
/* ok, next interrupt will be DMA interrupt */
if (drive->dma)
drive->waiting_for_dma = 1;
}
/* arm the interrupt handler */
ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, ide_cd_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;
/* start the DMA if need be */
if (drive->dma)
hwif->dma_ops->dma_start(drive);
/* send the command to the device */
hwif->tp_ops->output_data(drive, NULL, rq->cmd, cmd_len);
return ide_started;
}
/*
* Check the contents of the interrupt reason register from the cdrom
* and attempt to recover if there are problems. Returns 0 if everything's
......@@ -1174,7 +1081,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq,
return ide_stopped;
}
return cdrom_start_packet_command(drive);
return ide_issue_pc(drive);
}
/*
......@@ -2072,6 +1979,7 @@ static int ide_cd_probe(ide_drive_t *drive)
}
drive->debug_mask = debug_mask;
drive->irq_handler = cdrom_newpc_intr;
info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL);
if (info == NULL) {
......
......@@ -654,6 +654,8 @@ struct ide_drive_s {
int (*pc_io_buffers)(struct ide_drive_s *, struct ide_atapi_pc *,
unsigned int, int);
ide_startstop_t (*irq_handler)(struct ide_drive_s *);
unsigned long atapi_flags;
struct ide_atapi_pc request_sense_pc;
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment