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path: root/drivers/ide/pci/it8213.c
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Diffstat (limited to 'drivers/ide/pci/it8213.c')
-rw-r--r--drivers/ide/pci/it8213.c146
1 files changed, 29 insertions, 117 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 70b3245..dfbe605 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -18,45 +18,14 @@
#include <asm/io.h>
/**
- * it8213_dma_2_pio - return the PIO mode matching DMA
- * @xfer_rate: transfer speed
- *
- * Returns the nearest equivalent PIO timing for the DMA
- * mode requested by the controller.
- */
-
-static u8 it8213_dma_2_pio (u8 xfer_rate) {
- switch(xfer_rate) {
- case XFER_UDMA_6:
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- case XFER_MW_DMA_2:
- return 4;
- case XFER_MW_DMA_1:
- return 3;
- case XFER_SW_DMA_2:
- return 2;
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_1:
- case XFER_SW_DMA_0:
- default:
- return 0;
- }
-}
-
-/*
- * it8213_tune_pio - tune a drive
- * @drive: drive to tune
- * @pio: desired PIO mode
+ * it8213_set_pio_mode - set host controller for PIO mode
+ * @drive: drive
+ * @pio: PIO mode number
*
* Set the interface PIO mode.
*/
-static void it8213_tune_pio(ide_drive_t *drive, const u8 pio)
+static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
@@ -105,30 +74,19 @@ static void it8213_tune_pio(ide_drive_t *drive, const u8 pio)
spin_unlock_irqrestore(&tune_lock, flags);
}
-static void it8213_tuneproc(ide_drive_t *drive, u8 pio)
-{
- pio = ide_get_best_pio_mode(drive, pio, 4);
- it8213_tune_pio(drive, pio);
- ide_config_drive_speed(drive, XFER_PIO_0 + pio);
-}
-
/**
- * it8213_tune_chipset - set controller timings
- * @drive: Drive to set up
- * @xferspeed: speed we want to achieve
+ * it8213_set_dma_mode - set host controller for DMA mode
+ * @drive: drive
+ * @speed: DMA mode
*
- * Tune the ITE chipset for the desired mode. If we can't achieve
- * the desired mode then tune for a lower one, but ultimately
- * make the thing work.
+ * Tune the ITE chipset for the DMA mode.
*/
-static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
-
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
u8 maslave = 0x40;
- u8 speed = ide_rate_filter(drive, xferspeed);
int a_speed = 3 << (drive->dn * 4);
int u_flag = 1 << drive->dn;
int v_flag = 0x01 << drive->dn;
@@ -156,14 +114,8 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
case XFER_MW_DMA_1:
case XFER_SW_DMA_2:
break;
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0:
- break;
default:
- return -1;
+ return;
}
if (speed >= XFER_UDMA_0) {
@@ -183,6 +135,9 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
} else
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
} else {
+ const u8 mwdma_to_pio[] = { 0, 3, 4 };
+ u8 pio;
+
if (reg48 & u_flag)
pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
if (reg4a & a_speed)
@@ -191,81 +146,37 @@ static int it8213_tune_chipset (ide_drive_t *drive, u8 xferspeed)
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
if (reg55 & w_flag)
pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
- }
-
- if (speed > XFER_PIO_4)
- it8213_tune_pio(drive, it8213_dma_2_pio(speed));
- else
- it8213_tune_pio(drive, speed - XFER_PIO_0);
-
- return ide_config_drive_speed(drive, speed);
-}
-/**
- * it8213_configure_drive_for_dma - set up for DMA transfers
- * @drive: drive we are going to set up
- *
- * Set up the drive for DMA, tune the controller and drive as
- * required. If the drive isn't suitable for DMA or we hit
- * other problems then we will drop down to PIO and set up
- * PIO appropriately
- */
-
-static int it8213_config_drive_for_dma (ide_drive_t *drive)
-{
- if (ide_tune_dma(drive))
- return 0;
+ if (speed >= XFER_MW_DMA_0)
+ pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+ else
+ pio = 2; /* only SWDMA2 is allowed */
- it8213_tuneproc(drive, 255);
-
- return -1;
+ it8213_set_pio_mode(drive, pio);
+ }
}
/**
* init_hwif_it8213 - set up hwif structs
* @hwif: interface to set up
*
- * We do the basic set up of the interface structure. The IT8212
- * requires several custom handlers so we override the default
- * ide DMA handlers appropriately
+ * We do the basic set up of the interface structure.
*/
static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
{
u8 reg42h = 0;
- hwif->speedproc = &it8213_tune_chipset;
- hwif->tuneproc = &it8213_tuneproc;
-
- hwif->autodma = 0;
-
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
+ hwif->set_dma_mode = &it8213_set_dma_mode;
+ hwif->set_pio_mode = &it8213_set_pio_mode;
if (!hwif->dma_base)
return;
- hwif->atapi_dma = 1;
- hwif->ultra_mask = 0x7f;
- hwif->mwdma_mask = 0x06;
- hwif->swdma_mask = 0x04;
-
pci_read_config_byte(hwif->pci_dev, 0x42, &reg42h);
- hwif->ide_dma_check = &it8213_config_drive_for_dma;
-
if (hwif->cbl != ATA_CBL_PATA40_SHORT)
hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
-
- /*
- * The BIOS often doesn't set up DMA on this controller
- * so we always do it.
- */
- if (!noautodma)
- hwif->autodma = 1;
-
- hwif->drives[0].autodma = hwif->autodma;
- hwif->drives[1].autodma = hwif->autodma;
}
@@ -273,11 +184,13 @@ static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
{ \
.name = name_str, \
.init_hwif = init_hwif_it8213, \
- .autodma = AUTODMA, \
.enablebits = {{0x41,0x80,0x80}}, \
- .bootable = ON_BOARD, \
- .host_flags = IDE_HFLAG_SINGLE, \
+ .host_flags = IDE_HFLAG_SINGLE | \
+ IDE_HFLAG_BOOTABLE, \
.pio_mask = ATA_PIO4, \
+ .swdma_mask = ATA_SWDMA2_ONLY, \
+ .mwdma_mask = ATA_MWDMA12_ONLY, \
+ .udma_mask = ATA_UDMA6, \
}
static ide_pci_device_t it8213_chipsets[] __devinitdata = {
@@ -301,9 +214,8 @@ static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_devic
return 0;
}
-
-static struct pci_device_id it8213_pci_tbl[] = {
- { PCI_VENDOR_ID_ITE, 0x8213, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+static const struct pci_device_id it8213_pci_tbl[] = {
+ { PCI_VDEVICE(ITE, PCI_DEVICE_ID_ITE_8213), 0 },
{ 0, },
};
generated by cgit v1.1 at 2025-08-21 07:53:49 +0000