diff options
Diffstat (limited to 'drivers/ide/legacy/falconide.c')
| -rw-r--r-- | drivers/ide/legacy/falconide.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c index 56cdaa0eeea..32c044b17d4 100644 --- a/drivers/ide/legacy/falconide.c +++ b/drivers/ide/legacy/falconide.c @@ -44,6 +44,36 @@ int falconide_intr_lock; EXPORT_SYMBOL(falconide_intr_lock); +static void falconide_atapi_input_bytes(ide_drive_t *drive, void *buf, + unsigned int len) +{ + insw_swapw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); +} + +static void falconide_atapi_output_bytes(ide_drive_t *drive, void *buf, + unsigned int len) +{ + outsw_swapw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); +} + +static void falconide_ata_input_data(ide_drive_t *drive, struct request *rq, + void *buf, unsigned int wcount) +{ + if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) + return insw(drive->hwif->io_ports.data_addr, buf, wcount * 2); + + falconide_atapi_input_bytes(drive, buf, wcount * 4); +} + +static void falconide_ata_output_data(ide_drive_t *drive, struct request *rq, + void *buf, unsigned int wcount) +{ + if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) + return outsw(drive->hwif->io_ports.data_addr, buf, wcount * 2); + + falconide_atapi_output_bytes(drive, buf, wcount * 4); +} + static void __init falconide_setup_ports(hw_regs_t *hw) { int i; @@ -90,6 +120,12 @@ static int __init falconide_init(void) ide_init_port_data(hwif, index); ide_init_port_hw(hwif, &hw); + /* Atari has a byte-swapped IDE interface */ + hwif->atapi_input_bytes = falconide_atapi_input_bytes; + hwif->atapi_output_bytes = falconide_atapi_output_bytes; + hwif->ata_input_data = falconide_ata_input_data; + hwif->ata_output_data = falconide_ata_output_data; + ide_get_lock(NULL, NULL); ide_device_add(idx, NULL); ide_release_lock(); |