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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-28 23:44:36 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-04-28 23:44:36 +0200
commit92d3ab27e8fd23d1a9dc3b69d17b2afb83e5c6f5 (patch)
treee58076cb0102443dfe76401931a41931f97053cf /drivers/ide/legacy/falconide.c
parent284aa76b5339ce79d5ad2ac1c7cbf717082816a7 (diff)
falconide/q40ide: add ->atapi_*put_bytes and ->ata_*put_data methods (take 2)
* Add ->atapi_{in,out}put_bytes and ->ata_{in,out}put_data methods to falconide and q40ide host drivers (->ata_* methods are implemented on top of ->atapi_* methods so they also do byte-swapping now). * Cleanup atapi_{in,out}put_bytes(). v2: * Add 'struct request *rq' argument to ->ata_{in,out}put_data methods and don't byte-swap disk fs requests (we shouldn't un-swap fs requests because fs itself is stored byte-swapped on the disk) - this is how things were done before the patch (ideally device mapper should be used instead but it would break existing setups and would have some performance impact). Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Michael Schmitz <schmitz@debian.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Richard Zidlicky <rz@linux-m68k.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/legacy/falconide.c')
-rw-r--r--drivers/ide/legacy/falconide.c36
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();