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path: root/drivers/ide/legacy/falconide.c
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Diffstat (limited to 'drivers/ide/legacy/falconide.c')
-rw-r--r--drivers/ide/legacy/falconide.c40
1 files changed, 36 insertions, 4 deletions
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index e950afa5939..83555ca513b 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -22,6 +22,7 @@
#include <asm/atariints.h>
#include <asm/atari_stdma.h>
+#define DRV_NAME "falconide"
/*
* Base of the IDE interface
@@ -43,18 +44,40 @@
int falconide_intr_lock;
EXPORT_SYMBOL(falconide_intr_lock);
+static void falconide_input_data(ide_drive_t *drive, struct request *rq,
+ void *buf, unsigned int len)
+{
+ unsigned long data_addr = drive->hwif->io_ports.data_addr;
+
+ if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
+ return insw(data_addr, buf, (len + 1) / 2);
+
+ insw_swapw(data_addr, buf, (len + 1) / 2);
+}
+
+static void falconide_output_data(ide_drive_t *drive, struct request *rq,
+ void *buf, unsigned int len)
+{
+ unsigned long data_addr = drive->hwif->io_ports.data_addr;
+
+ if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS)
+ return outsw(data_adr, buf, (len + 1) / 2);
+
+ outsw_swapw(data_addr, buf, (len + 1) / 2);
+}
+
static void __init falconide_setup_ports(hw_regs_t *hw)
{
int i;
memset(hw, 0, sizeof(*hw));
- hw->io_ports[IDE_DATA_OFFSET] = ATA_HD_BASE;
+ hw->io_ports.data_addr = ATA_HD_BASE;
for (i = 1; i < 8; i++)
- hw->io_ports[i] = ATA_HD_BASE + 1 + i * 4;
+ hw->io_ports_array[i] = ATA_HD_BASE + 1 + i * 4;
- hw->io_ports[IDE_CONTROL_OFFSET] = ATA_HD_BASE + ATA_HD_CONTROL;
+ hw->io_ports.ctl_addr = ATA_HD_BASE + ATA_HD_CONTROL;
hw->irq = IRQ_MFP_IDE;
hw->ack_intr = NULL;
@@ -74,9 +97,14 @@ static int __init falconide_init(void)
printk(KERN_INFO "ide: Falcon IDE controller\n");
+ if (!request_mem_region(ATA_HD_BASE, 0x40, DRV_NAME)) {
+ printk(KERN_ERR "%s: resources busy\n", DRV_NAME);
+ return -EBUSY;
+ }
+
falconide_setup_ports(&hw);
- hwif = ide_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ hwif = ide_find_port();
if (hwif) {
u8 index = hwif->index;
u8 idx[4] = { index, 0xff, 0xff, 0xff };
@@ -84,6 +112,10 @@ 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->input_data = falconide_input_data;
+ hwif->output_data = falconide_output_data;
+
ide_get_lock(NULL, NULL);
ide_device_add(idx, NULL);
ide_release_lock();