/*
- * linux/drivers/ide/pci/slc90e66.c Version 0.13 December 30, 2006
+ * linux/drivers/ide/pci/slc90e66.c Version 0.18 Aug 9, 2007
*
* Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2006 MontaVista Software, Inc. <source@mvista.com>
+ * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
*
* This is a look-alike variation of the ICH0 PIIX4 Ultra-66,
* but this keeps the ISA-Bridge and slots alive.
#include <asm/io.h>
-static u8 slc90e66_ratemask (ide_drive_t *drive)
-{
- u8 mode = 2;
-
- if (!eighty_ninty_three(drive))
- mode = min_t(u8, mode, 1);
- return mode;
-}
-
-static u8 slc90e66_dma_2_pio (u8 xfer_rate) {
- switch(xfer_rate) {
- 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;
- }
-}
-
-/*
- * Based on settings done by AMI BIOS
- * (might be useful if drive is not registered in CMOS for any reason).
- */
-static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio)
+static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
{ 2, 1 },
{ 2, 3 }, };
- pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
spin_lock_irqsave(&ide_lock, flags);
pci_read_config_word(dev, master_port, &master_data);
master_data |= 0x4000;
master_data &= ~0x0070;
if (pio > 1) {
- /* enable PPE, IE and TIME */
- master_data = master_data | (control << 4);
+ /* Set PPE, IE and TIME */
+ master_data |= control << 4;
}
pci_read_config_byte(dev, slave_port, &slave_data);
- slave_data = slave_data & (hwif->channel ? 0x0f : 0xf0);
- slave_data = slave_data | (((timings[pio][0] << 2) | timings[pio][1]) << (hwif->channel ? 4 : 0));
+ slave_data &= hwif->channel ? 0x0f : 0xf0;
+ slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) <<
+ (hwif->channel ? 4 : 0);
} else {
master_data &= ~0x3307;
if (pio > 1) {
/* enable PPE, IE and TIME */
- master_data = master_data | control;
+ master_data |= control;
}
- master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8);
+ master_data |= (timings[pio][0] << 12) | (timings[pio][1] << 8);
}
pci_write_config_word(dev, master_port, master_data);
if (is_slave)
spin_unlock_irqrestore(&ide_lock, flags);
}
-static int slc90e66_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static void slc90e66_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 = hwif->channel ? 0x42 : 0x40;
- u8 speed = ide_rate_filter(slc90e66_ratemask(drive), xferspeed);
int sitre = 0, a_speed = 7 << (drive->dn * 4);
int u_speed = 0, u_flag = 1 << drive->dn;
u16 reg4042, reg44, reg48, reg4a;
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_0: break;
- default: return -1;
+ default: return;
}
if (speed >= XFER_UDMA_0) {
pci_write_config_word(dev, 0x4a, reg4a|u_speed);
}
} else {
+ const u8 mwdma_to_pio[] = { 0, 3, 4 };
+ u8 pio;
+
if (reg48 & u_flag)
pci_write_config_word(dev, 0x48, reg48 & ~u_flag);
if (reg4a & a_speed)
pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
- }
-
- slc90e66_tune_drive(drive, slc90e66_dma_2_pio(speed));
- return (ide_config_drive_speed(drive, speed));
-}
-
-static int slc90e66_config_drive_for_dma (ide_drive_t *drive)
-{
- u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive));
-
- if (!speed)
- return 0;
-
- (void) slc90e66_tune_chipset(drive, speed);
- return ide_dma_enable(drive);
-}
-
-static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct hd_driveid *id = drive->id;
-
- drive->init_speed = 0;
-
- if ((id->capability & 1) && drive->autodma) {
- if (ide_use_dma(drive) && slc90e66_config_drive_for_dma(drive))
- return hwif->ide_dma_on(drive);
+ if (speed >= XFER_MW_DMA_0)
+ pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+ else
+ pio = 2; /* only SWDMA2 is allowed */
- goto fast_ata_pio;
-
- } else if ((id->capability & 8) || (id->field_valid & 2)) {
-fast_ata_pio:
- (void) hwif->speedproc(drive, XFER_PIO_0 +
- ide_get_best_pio_mode(drive, 255, 4, NULL));
- return hwif->ide_dma_off_quietly(drive);
+ slc90e66_set_pio_mode(drive, pio);
}
- /* IORDY not supported */
- return 0;
}
static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
u8 reg47 = 0;
u8 mask = hwif->channel ? 0x01 : 0x02; /* bit0:Primary */
- hwif->autodma = 0;
-
- if (!hwif->irq)
- hwif->irq = hwif->channel ? 15 : 14;
-
- hwif->speedproc = &slc90e66_tune_chipset;
- hwif->tuneproc = &slc90e66_tune_drive;
+ hwif->set_pio_mode = &slc90e66_set_pio_mode;
+ hwif->set_dma_mode = &slc90e66_set_dma_mode;
pci_read_config_byte(hwif->pci_dev, 0x47, ®47);
- if (!hwif->dma_base) {
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
+ if (hwif->dma_base == 0)
return;
- }
- hwif->atapi_dma = 1;
- hwif->ultra_mask = 0x1f;
- hwif->mwdma_mask = 0x06;
- hwif->swdma_mask = 0x04;
-
- if (!hwif->udma_four) {
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
/* bit[0(1)]: 0:80, 1:40 */
- hwif->udma_four = (reg47 & mask) ? 0 : 1;
- }
-
- hwif->ide_dma_check = &slc90e66_config_drive_xfer_rate;
-
- if (!noautodma)
- hwif->autodma = 1;
- hwif->drives[0].autodma = hwif->autodma;
- hwif->drives[1].autodma = hwif->autodma;
+ hwif->cbl = (reg47 & mask) ? ATA_CBL_PATA40 : ATA_CBL_PATA80;
}
static ide_pci_device_t slc90e66_chipset __devinitdata = {
.name = "SLC90E66",
.init_hwif = init_hwif_slc90e66,
- .channels = 2,
- .autodma = AUTODMA,
.enablebits = {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
- .bootable = ON_BOARD,
+ .host_flags = IDE_HFLAG_LEGACY_IRQS | IDE_HFLAG_BOOTABLE,
+ .pio_mask = ATA_PIO4,
+ .swdma_mask = ATA_SWDMA2_ONLY,
+ .mwdma_mask = ATA_MWDMA12_ONLY,
+ .udma_mask = ATA_UDMA4,
};
static int __devinit slc90e66_init_one(struct pci_dev *dev, const struct pci_device_id *id)
return ide_setup_pci_device(dev, &slc90e66_chipset);
}
-static struct pci_device_id slc90e66_pci_tbl[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0},
+static const struct pci_device_id slc90e66_pci_tbl[] = {
+ { PCI_VDEVICE(EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1), 0 },
{ 0, },
};
MODULE_DEVICE_TABLE(pci, slc90e66_pci_tbl);