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| author |   Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-15 21:22:00 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-15 21:22:00 +0200 |
| commit | 6bf1641ca1c7554f0da54aaf89788731b541bacc (patch) | |
| tree | ce7c371971e68b650d87e67935e460c948f4cb20 /drivers/scsi | |
| parent | ide: add PC_FLAG_DRQ_INTERRUPT pc flag (diff) | |
| download | linux-dev-6bf1641ca1c7554f0da54aaf89788731b541bacc.tar.xz linux-dev-6bf1641ca1c7554f0da54aaf89788731b541bacc.zip | |
ide: add ide_issue_pc() helper
Add generic ide_issue_pc() helper to ide-atapi.c and then
convert ide-{floppy,tape,scsi} device drivers to use it.
There should be no functional changes caused by this patch.
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/ide-scsi.c | 30 |
1 files changed, 2 insertions, 28 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index b7c5e8391575..32415466fbfe 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -502,38 +502,12 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc) { idescsi_scsi_t *scsi = drive_to_idescsi(drive); - ide_hwif_t *hwif = drive->hwif; - u16 bcount; - u8 dma = 0; /* Set the current packet command */ scsi->pc = pc; - /* We haven't transferred any data yet */ - pc->xferred = 0; - pc->cur_pos = pc->buf; - /* Request to transfer the entire buffer at once */ - bcount = min(pc->req_xfer, 63 * 1024); - - if ((pc->flags & PC_FLAG_DMA_OK) && drive->using_dma) { - hwif->sg_mapped = 1; - dma = !hwif->dma_ops->dma_setup(drive); - hwif->sg_mapped = 0; - } - - if (!dma) - pc->flags &= ~PC_FLAG_DMA_OK; - ide_pktcmd_tf_load(drive, 0, bcount, dma); - - if (pc->flags & PC_FLAG_DRQ_INTERRUPT) { - ide_execute_command(drive, WIN_PACKETCMD, &idescsi_transfer_pc, - get_timeout(pc), idescsi_expiry); - return ide_started; - } else { - /* Issue the packet command */ - ide_execute_pkt_cmd(drive); - return idescsi_transfer_pc(drive); - } + return ide_issue_pc(drive, pc, idescsi_transfer_pc, + get_timeout(pc), idescsi_expiry); } /* |