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path: root/drivers/ide/pci/cmd64x.c
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Diffstat (limited to 'drivers/ide/pci/cmd64x.c')
-rw-r--r--drivers/ide/pci/cmd64x.c110
1 files changed, 52 insertions, 58 deletions
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 5411ded791b..5fd252e6ed0 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -223,7 +223,7 @@ static void cmd64x_set_dma_mode(ide_drive_t *drive, const u8 speed)
(void) pci_write_config_byte(dev, pciU, regU);
}
-static int cmd648_ide_dma_end (ide_drive_t *drive)
+static int cmd648_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
unsigned long base = hwif->dma_base - (hwif->channel * 8);
@@ -239,7 +239,7 @@ static int cmd648_ide_dma_end (ide_drive_t *drive)
return err;
}
-static int cmd64x_ide_dma_end (ide_drive_t *drive)
+static int cmd64x_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -256,7 +256,7 @@ static int cmd64x_ide_dma_end (ide_drive_t *drive)
return err;
}
-static int cmd648_ide_dma_test_irq (ide_drive_t *drive)
+static int cmd648_dma_test_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
unsigned long base = hwif->dma_base - (hwif->channel * 8);
@@ -279,7 +279,7 @@ static int cmd648_ide_dma_test_irq (ide_drive_t *drive)
return 0;
}
-static int cmd64x_ide_dma_test_irq (ide_drive_t *drive)
+static int cmd64x_dma_test_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -310,7 +310,7 @@ static int cmd64x_ide_dma_test_irq (ide_drive_t *drive)
* event order for DMA transfers.
*/
-static int cmd646_1_ide_dma_end (ide_drive_t *drive)
+static int cmd646_1_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
u8 dma_stat = 0, dma_cmd = 0;
@@ -385,62 +385,33 @@ static u8 __devinit cmd64x_cable_detect(ide_hwif_t *hwif)
}
}
-static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
-{
- struct pci_dev *dev = to_pci_dev(hwif->dev);
-
- if (!hwif->dma_base)
- return;
-
- /*
- * UltraDMA only supported on PCI646U and PCI646U2, which
- * correspond to revisions 0x03, 0x05 and 0x07 respectively.
- * Actually, although the CMD tech support people won't
- * tell me the details, the 0x03 revision cannot support
- * UDMA correctly without hardware modifications, and even
- * then it only works with Quantum disks due to some
- * hold time assumptions in the 646U part which are fixed
- * in the 646U2.
- *
- * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
- */
- if (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 5)
- hwif->ultra_mask = 0x00;
-
- switch (dev->device) {
- case PCI_DEVICE_ID_CMD_648:
- case PCI_DEVICE_ID_CMD_649:
- alt_irq_bits:
- hwif->ide_dma_end = &cmd648_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd648_ide_dma_test_irq;
- break;
- case PCI_DEVICE_ID_CMD_646:
- if (dev->revision == 0x01) {
- hwif->ide_dma_end = &cmd646_1_ide_dma_end;
- break;
- } else if (dev->revision >= 0x03)
- goto alt_irq_bits;
- /* fall thru */
- default:
- hwif->ide_dma_end = &cmd64x_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
- break;
- }
-}
-
static const struct ide_port_ops cmd64x_port_ops = {
.set_pio_mode = cmd64x_set_pio_mode,
.set_dma_mode = cmd64x_set_dma_mode,
.cable_detect = cmd64x_cable_detect,
};
+static struct ide_dma_ops cmd64x_dma_ops = {
+ .dma_end = cmd64x_dma_end,
+ .dma_test_irq = cmd64x_dma_test_irq,
+};
+
+static struct ide_dma_ops cmd646_rev1_dma_ops = {
+ .dma_end = cmd646_1_dma_end,
+};
+
+static struct ide_dma_ops cmd648_dma_ops = {
+ .dma_end = cmd648_dma_end,
+ .dma_test_irq = cmd648_dma_test_irq,
+};
+
static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
{ /* 0 */
.name = "CMD643",
.init_chipset = init_chipset_cmd64x,
- .init_hwif = init_hwif_cmd64x,
.enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
+ .dma_ops = &cmd64x_dma_ops,
.host_flags = IDE_HFLAG_CLEAR_SIMPLEX |
IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
@@ -449,10 +420,10 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
},{ /* 1 */
.name = "CMD646",
.init_chipset = init_chipset_cmd64x,
- .init_hwif = init_hwif_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.chipset = ide_cmd646,
.port_ops = &cmd64x_port_ops,
+ .dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
.mwdma_mask = ATA_MWDMA2,
@@ -460,9 +431,9 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
},{ /* 2 */
.name = "CMD648",
.init_chipset = init_chipset_cmd64x,
- .init_hwif = init_hwif_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
+ .dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
.mwdma_mask = ATA_MWDMA2,
@@ -470,9 +441,9 @@ static const struct ide_port_info cmd64x_chipsets[] __devinitdata = {
},{ /* 3 */
.name = "CMD649",
.init_chipset = init_chipset_cmd64x,
- .init_hwif = init_hwif_cmd64x,
.enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.port_ops = &cmd64x_port_ops,
+ .dma_ops = &cmd648_dma_ops,
.host_flags = IDE_HFLAG_ABUSE_PREFETCH,
.pio_mask = ATA_PIO5,
.mwdma_mask = ATA_MWDMA2,
@@ -487,12 +458,35 @@ static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_devic
d = cmd64x_chipsets[idx];
- /*
- * The original PCI0646 didn't have the primary channel enable bit,
- * it appeared starting with PCI0646U (i.e. revision ID 3).
- */
- if (idx == 1 && dev->revision < 3)
- d.enablebits[0].reg = 0;
+ if (idx == 1) {
+ /*
+ * UltraDMA only supported on PCI646U and PCI646U2, which
+ * correspond to revisions 0x03, 0x05 and 0x07 respectively.
+ * Actually, although the CMD tech support people won't
+ * tell me the details, the 0x03 revision cannot support
+ * UDMA correctly without hardware modifications, and even
+ * then it only works with Quantum disks due to some
+ * hold time assumptions in the 646U part which are fixed
+ * in the 646U2.
+ *
+ * So we only do UltraDMA on revision 0x05 and 0x07 chipsets.
+ */
+ if (dev->revision < 5) {
+ d.udma_mask = 0x00;
+ /*
+ * The original PCI0646 didn't have the primary
+ * channel enable bit, it appeared starting with
+ * PCI0646U (i.e. revision ID 3).
+ */
+ if (dev->revision < 3) {
+ d.enablebits[0].reg = 0;
+ if (dev->revision == 1)
+ d.dma_ops = &cmd646_rev1_dma_ops;
+ else
+ d.dma_ops = &cmd64x_dma_ops;
+ }
+ }
+ }
return ide_setup_pci_device(dev, &d);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 00:06:04 +0000