korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 00:04:15 +08:00
Code Issues Packages Projects Releases Wiki Activity

alim15x3: fix CD_ROM DMA and PIO FIFO settings setup

Browse Source 
* Setup CD_ROM DMA and PIO FIFO settings in init_chipset_ali15x3() instead
  of ata66_ali15x3().  The latter is called from init_hwif_common_ali15x3()
  only if DMA base exists (which insists m5529_revision > 0x20).

  This changes makes CD_ROM DMA / PIO FIFO bits being set only once
  and also when "idex=ata66" kernel parameter is used.

* While at it move also chip_is_1543c_e setup from ata66_ali15x3() to
  init_chipset_ali15x3() and check if isa_dev exists before accessing it.

* Bump driver version.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-10-20 00:32:30 +02:00
parent caea7602f3
commit cad221aa82
1 changed files with 31 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/ide/pci/alim15x3.c
View File

@ -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;