diff options
Diffstat (limited to 'drivers/ide/pci/slc90e66.c')
| -rw-r--r-- | drivers/ide/pci/slc90e66.c | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c index 4a1853a..2663ddb 100644 --- a/drivers/ide/pci/slc90e66.c +++ b/drivers/ide/pci/slc90e66.c @@ -1,9 +1,10 @@ /* - * linux/drivers/ide/pci/slc90e66.c Version 0.11 September 11, 2002 + * linux/drivers/ide/pci/slc90e66.c Version 0.13 December 30, 2006 * * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org> + * Copyright (C) 2006 MontaVista Software, Inc. <source@mvista.com> * - * This a look-a-like variation of the ICH0 PIIX4 Ultra-66, + * This is a look-alike variation of the ICH0 PIIX4 Ultra-66, * but this keeps the ISA-Bridge and slots alive. * */ @@ -25,7 +26,7 @@ static u8 slc90e66_ratemask (ide_drive_t *drive) u8 mode = 2; if (!eighty_ninty_three(drive)) - mode = min(mode, (u8)1); + mode = min_t(u8, mode, 1); return mode; } @@ -64,36 +65,47 @@ static void slc90e66_tune_drive (ide_drive_t *drive, u8 pio) { ide_hwif_t *hwif = HWIF(drive); struct pci_dev *dev = hwif->pci_dev; - int is_slave = (&hwif->drives[1] == drive); + int is_slave = drive->dn & 1; int master_port = hwif->channel ? 0x42 : 0x40; int slave_port = 0x44; unsigned long flags; u16 master_data; u8 slave_data; - /* ISP RTC */ + int control = 0; + /* ISP RTC */ static const u8 timings[][2]= { - { 0, 0 }, - { 0, 0 }, - { 1, 0 }, - { 2, 1 }, - { 2, 3 }, }; + { 0, 0 }, + { 0, 0 }, + { 1, 0 }, + { 2, 1 }, + { 2, 3 }, }; - pio = ide_get_best_pio_mode(drive, pio, 5, NULL); + 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); + + if (pio > 1) + control |= 1; /* Programmable timing on */ + if (drive->media == ide_disk) + control |= 4; /* Prefetch, post write */ + if (pio > 2) + control |= 2; /* IORDY */ if (is_slave) { - master_data = master_data | 0x4000; - if (pio > 1) + master_data |= 0x4000; + master_data &= ~0x0070; + if (pio > 1) { /* enable PPE, IE and TIME */ - master_data = master_data | 0x0070; + master_data = 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)); } else { - master_data = master_data & 0xccf8; - if (pio > 1) + master_data &= ~0x3307; + if (pio > 1) { /* enable PPE, IE and TIME */ - master_data = master_data | 0x0007; + master_data = master_data | control; + } master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8); } pci_write_config_word(dev, master_port, master_data); @@ -158,10 +170,8 @@ static int slc90e66_config_drive_for_dma (ide_drive_t *drive) { u8 speed = ide_dma_speed(drive, slc90e66_ratemask(drive)); - if (!(speed)) { - u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL); - speed = slc90e66_dma_2_pio(XFER_PIO_0 + tspeed); - } + if (!speed) + return 0; (void) slc90e66_tune_chipset(drive, speed); return ide_dma_enable(drive); @@ -174,18 +184,17 @@ static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive) drive->init_speed = 0; - if (id && (id->capability & 1) && drive->autodma) { + if ((id->capability & 1) && drive->autodma) { - if (ide_use_dma(drive)) { - if (slc90e66_config_drive_for_dma(drive)) - return hwif->ide_dma_on(drive); - } + if (ide_use_dma(drive) && slc90e66_config_drive_for_dma(drive)) + return hwif->ide_dma_on(drive); goto fast_ata_pio; } else if ((id->capability & 8) || (id->field_valid & 2)) { fast_ata_pio: - hwif->tuneproc(drive, 5); + (void) hwif->speedproc(drive, XFER_PIO_0 + + ide_get_best_pio_mode(drive, 255, 4, NULL)); return hwif->ide_dma_off_quietly(drive); } /* IORDY not supported */ @@ -203,7 +212,7 @@ static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif) hwif->irq = hwif->channel ? 15 : 14; hwif->speedproc = &slc90e66_tune_chipset; - hwif->tuneproc = &slc90e66_tune_drive; + hwif->tuneproc = &slc90e66_tune_drive; pci_read_config_byte(hwif->pci_dev, 0x47, ®47); @@ -215,14 +224,16 @@ static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif) hwif->atapi_dma = 1; hwif->ultra_mask = 0x1f; - hwif->mwdma_mask = 0x07; - hwif->swdma_mask = 0x07; + hwif->mwdma_mask = 0x06; + hwif->swdma_mask = 0x04; - if (!(hwif->udma_four)) + if (!hwif->udma_four) { /* 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; @@ -255,7 +266,7 @@ static struct pci_driver driver = { .probe = slc90e66_init_one, }; -static int slc90e66_ide_init(void) +static int __init slc90e66_ide_init(void) { return ide_pci_register_driver(&driver); } |