diff options
Diffstat (limited to 'drivers/ide')
-rw-r--r-- | drivers/ide/pci/alim15x3.c | 60 |
1 files changed, 31 insertions, 29 deletions
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c index 8ee2b48d105..1ab769b31e6 100644 --- a/drivers/ide/pci/alim15x3.c +++ b/drivers/ide/pci/alim15x3.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/alim15x3.c Version 0.27 Aug 27 2007 + * linux/drivers/ide/pci/alim15x3.c Version 0.28 Sep 15 2007 * * Copyright (C) 1998-2000 Michel Aubry, Maintainer * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer @@ -492,6 +492,13 @@ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const c * clear bit 7 */ pci_write_config_byte(dev, 0x4b, tmpbyte & 0x7F); + /* + * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010 + */ + if (m5229_revision >= 0x20 && isa_dev) { + pci_read_config_byte(isa_dev, 0x5e, &tmpbyte); + chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0; + } goto out; } @@ -537,7 +544,30 @@ static unsigned int __devinit init_chipset_ali15x3 (struct pci_dev *dev, const c pci_write_config_byte(isa_dev, 0x79, tmpbyte | 0x02); } } + out: + /* + * CD_ROM DMA on (m5229, 0x53, bit0) + * Enable this bit even if we want to use PIO. + * PIO FIFO off (m5229, 0x53, bit1) + * The hardware will use 0x54h and 0x55h to control PIO FIFO. + * (Not on later devices it seems) + * + * 0x53 changes meaning on later revs - we must no touch + * bit 1 on them. Need to check if 0x20 is the right break. + */ + if (m5229_revision >= 0x20) { + pci_read_config_byte(dev, 0x53, &tmpbyte); + + if (m5229_revision <= 0x20) + tmpbyte = (tmpbyte & (~0x02)) | 0x01; + else if (m5229_revision == 0xc7 || m5229_revision == 0xc8) + tmpbyte |= 0x03; + else + tmpbyte |= 0x01; + + pci_write_config_byte(dev, 0x53, tmpbyte); + } pci_dev_put(north); pci_dev_put(isa_dev); local_irq_restore(flags); @@ -616,36 +646,8 @@ static u8 __devinit ata66_ali15x3(ide_hwif_t *hwif) if ((tmpbyte & (1 << hwif->channel)) == 0) cbl = ATA_CBL_PATA80; } - } else { - /* - * check m1533, 0x5e, bit 1~4 == 1001 => & 00011110 = 00010010 - */ - pci_read_config_byte(isa_dev, 0x5e, &tmpbyte); - chip_is_1543c_e = ((tmpbyte & 0x1e) == 0x12) ? 1: 0; } - /* - * CD_ROM DMA on (m5229, 0x53, bit0) - * Enable this bit even if we want to use PIO - * PIO FIFO off (m5229, 0x53, bit1) - * The hardware will use 0x54h and 0x55h to control PIO FIFO - * (Not on later devices it seems) - * - * 0x53 changes meaning on later revs - we must no touch - * bit 1 on them. Need to check if 0x20 is the right break - */ - - pci_read_config_byte(dev, 0x53, &tmpbyte); - - if(m5229_revision <= 0x20) - tmpbyte = (tmpbyte & (~0x02)) | 0x01; - else if (m5229_revision == 0xc7 || m5229_revision == 0xc8) - tmpbyte |= 0x03; - else - tmpbyte |= 0x01; - - pci_write_config_byte(dev, 0x53, tmpbyte); - local_irq_restore(flags); return cbl; |