#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
-#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/init.h>
-#include <asm/io.h>
-
-/*
- * it8213_ratemask - Compute available modes
- * @drive: IDE drive
- *
- * Compute the available speeds for the devices on the interface. This
- * is all modes to ATA133 clipped by drive cable setup.
- */
-
-static u8 it8213_ratemask (ide_drive_t *drive)
-{
- u8 mode = 4;
- if (!eighty_ninty_three(drive))
- mode = min_t(u8, mode, 1);
- return mode;
-}
-
/**
- * it8213_dma_2_pio - return the PIO mode matching DMA
- * @xfer_rate: transfer speed
- *
- * Returns the nearest equivalent PIO timing for the PIO or 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:
- case XFER_PIO_4:
- return 4;
- case XFER_MW_DMA_1:
- case XFER_PIO_3:
- return 3;
- case XFER_SW_DMA_2:
- case XFER_PIO_2:
- return 2;
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_1:
- case XFER_SW_DMA_0:
- case XFER_PIO_1:
- case XFER_PIO_0:
- case XFER_PIO_SLOW:
- default:
- return 0;
- }
-}
-
-/*
- * it8213_tuneproc - 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_tuneproc (ide_drive_t *drive, 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;
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
int is_slave = drive->dn & 1;
int master_port = 0x40;
int slave_port = 0x44;
static DEFINE_SPINLOCK(tune_lock);
int control = 0;
- static const u8 timings[][2]= {
+ static const u8 timings[][2] = {
{ 0, 0 },
{ 0, 0 },
{ 1, 0 },
{ 2, 1 },
{ 2, 3 }, };
- pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
-
spin_lock_irqsave(&tune_lock, flags);
pci_read_config_word(dev, master_port, &master_data);
}
/**
- * 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;
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
u8 maslave = 0x40;
- u8 speed = ide_rate_filter(it8213_ratemask(drive), xferspeed);
int a_speed = 3 << (drive->dn * 4);
int u_flag = 1 << drive->dn;
int v_flag = 0x01 << drive->dn;
pci_read_config_byte(dev, 0x54, ®54);
pci_read_config_byte(dev, 0x55, ®55);
- switch(speed) {
- case XFER_UDMA_6:
- case XFER_UDMA_4:
- case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break;
- case XFER_UDMA_5:
- case XFER_UDMA_3:
- case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break;
- case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break;
- break;
- case XFER_MW_DMA_2:
- 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;
- }
-
if (speed >= XFER_UDMA_0) {
+ u8 udma = speed - XFER_UDMA_0;
+
+ u_speed = min_t(u8, 2 - (udma & 1), udma) << (drive->dn * 4);
+
if (!(reg48 & u_flag))
pci_write_config_byte(dev, 0x48, reg48 | u_flag);
- if (speed >= XFER_UDMA_5) {
+ if (speed >= XFER_UDMA_5)
pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag);
- } else {
+ else
pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
- }
if ((reg4a & a_speed) != u_speed)
pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed);
} 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)
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
if (reg55 & w_flag)
pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
- }
- it8213_tuneproc(drive, it8213_dma_2_pio(speed));
- return ide_config_drive_speed(drive, speed);
-}
-/*
- * config_chipset_for_dma - configure for DMA
- * @drive: drive to configure
- *
- * Called by the IDE layer when it wants the timings set up.
- */
+ if (speed >= XFER_MW_DMA_0)
+ pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+ else
+ pio = 2; /* only SWDMA2 is allowed */
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
- u8 speed = ide_dma_speed(drive, it8213_ratemask(drive));
-
- if (!speed)
- return 0;
-
- it8213_tune_chipset(drive, speed);
-
- return ide_dma_enable(drive);
+ it8213_set_pio_mode(drive, pio);
+ }
}
-/**
- * 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)
+static u8 __devinit it8213_cable_detect(ide_hwif_t *hwif)
{
- u8 pio;
-
- if (ide_use_dma(drive) && config_chipset_for_dma(drive))
- return 0;
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ u8 reg42h = 0;
- pio = ide_get_best_pio_mode(drive, 255, 4, NULL);
- it8213_tune_chipset(drive, XFER_PIO_0 + pio);
+ pci_read_config_byte(dev, 0x42, ®42h);
- return -1;
-}
-
-/**
- * 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
- */
-
-static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
-{
- u8 reg42h = 0, ata66 = 0;
-
- hwif->speedproc = &it8213_tune_chipset;
- hwif->tuneproc = &it8213_tuneproc;
-
- hwif->autodma = 0;
-
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
-
- 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, ®42h);
- ata66 = (reg42h & 0x02) ? 0 : 1;
-
- hwif->ide_dma_check = &it8213_config_drive_for_dma;
- if (!(hwif->udma_four))
- hwif->udma_four = ata66;
-
- /*
- * 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;
+ return (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}
+static const struct ide_port_ops it8213_port_ops = {
+ .set_pio_mode = it8213_set_pio_mode,
+ .set_dma_mode = it8213_set_dma_mode,
+ .cable_detect = it8213_cable_detect,
+};
#define DECLARE_ITE_DEV(name_str) \
{ \
.name = name_str, \
- .init_hwif = init_hwif_it8213, \
- .channels = 1, \
- .autodma = AUTODMA, \
- .enablebits = {{0x41,0x80,0x80}}, \
- .bootable = ON_BOARD, \
+ .enablebits = { {0x41, 0x80, 0x80} }, \
+ .port_ops = &it8213_port_ops, \
+ .host_flags = IDE_HFLAG_SINGLE, \
+ .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 = {
+static const struct ide_port_info it8213_chipsets[] __devinitdata = {
/* 0 */ DECLARE_ITE_DEV("IT8213"),
};
static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- ide_setup_pci_device(dev, &it8213_chipsets[id->driver_data]);
- return 0;
+ return ide_pci_init_one(dev, &it8213_chipsets[id->driver_data], NULL);
}
-
-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, },
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff