diff options
| -rw-r--r-- | drivers/ide/ide-floppy.c | 65 |
1 files changed, 17 insertions, 48 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 53209a473937..8dbb340dbfc0 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -522,40 +522,6 @@ static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) } /* - * This is the original routine that did the packet transfer. - * It fails at high speeds on the Iomega ZIP drive, so there's a slower version - * for that drive below. The algorithm is chosen based on drive type - */ -static ide_startstop_t idefloppy_transfer_pc(ide_drive_t *drive) -{ - ide_hwif_t *hwif = drive->hwif; - ide_startstop_t startstop; - idefloppy_floppy_t *floppy = drive->driver_data; - u8 ireason; - - if (ide_wait_stat(&startstop, drive, DRQ_STAT, BUSY_STAT, WAIT_READY)) { - printk(KERN_ERR "ide-floppy: Strange, packet command " - "initiated yet DRQ isn't asserted\n"); - return startstop; - } - ireason = hwif->INB(hwif->io_ports.nsect_addr); - if ((ireason & CD) == 0 || (ireason & IO)) { - printk(KERN_ERR "ide-floppy: (IO,CoD) != (0,1) while " - "issuing a packet command\n"); - return ide_do_reset(drive); - } - - /* Set the interrupt routine */ - ide_set_handler(drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); - - /* Send the actual packet */ - hwif->output_data(drive, NULL, floppy->pc->c, 12); - - return ide_started; -} - - -/* * What we have here is a classic case of a top half / bottom half interrupt * service routine. In interrupt mode, the device sends an interrupt to signal * that it is ready to receive a packet. However, we need to delay about 2-3 @@ -580,6 +546,8 @@ static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive) { ide_hwif_t *hwif = drive->hwif; idefloppy_floppy_t *floppy = drive->driver_data; + ide_expiry_t *expiry; + unsigned int timeout; ide_startstop_t startstop; u8 ireason; @@ -602,9 +570,20 @@ static ide_startstop_t idefloppy_transfer_pc1(ide_drive_t *drive) * 40 and 50msec work well. idefloppy_pc_intr will not be actually * used until after the packet is moved in about 50 msec. */ + if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { + timeout = floppy->ticks; + expiry = &idefloppy_transfer_pc2; + } else { + timeout = IDEFLOPPY_WAIT_CMD; + expiry = NULL; + } + + ide_set_handler(drive, &idefloppy_pc_intr, timeout, expiry); + + if ((floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) == 0) + /* Send the actual packet */ + hwif->output_data(drive, NULL, floppy->pc->c, 12); - ide_set_handler(drive, &idefloppy_pc_intr, floppy->ticks, - &idefloppy_transfer_pc2); return ide_started; } @@ -629,7 +608,6 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, { idefloppy_floppy_t *floppy = drive->driver_data; ide_hwif_t *hwif = drive->hwif; - ide_handler_t *pkt_xfer_routine; u16 bcount; u8 dma; @@ -675,26 +653,17 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive, hwif->dma_ops->dma_start(drive); } - /* Can we transfer the packet when we get the interrupt or wait? */ - if (floppy->flags & IDEFLOPPY_FLAG_ZIP_DRIVE) { - /* wait */ - pkt_xfer_routine = &idefloppy_transfer_pc1; - } else { - /* immediate */ - pkt_xfer_routine = &idefloppy_transfer_pc; - } - if (floppy->flags & IDEFLOPPY_FLAG_DRQ_INTERRUPT) { /* Issue the packet command */ ide_execute_command(drive, WIN_PACKETCMD, - pkt_xfer_routine, + &idefloppy_transfer_pc1, IDEFLOPPY_WAIT_CMD, NULL); return ide_started; } else { /* Issue the packet command */ ide_execute_pkt_cmd(drive); - return (*pkt_xfer_routine) (drive); + return idefloppy_transfer_pc1(drive); } } |