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Red Hat Bugzilla – Attachment 147204 Details for
Bug 226950
Can't install OS on ATI SB600 chipset with legacy IDE mode
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[patch]
fix udma mode issue
sb600_ide_udma_mode.patch (text/plain), 935 bytes, created by
Xin-Yun Liu (Wolke Liu)
on 2007-02-02 09:27:18 UTC
(
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Description:
fix udma mode issue
Filename:
MIME Type:
Creator:
Xin-Yun Liu (Wolke Liu)
Created:
2007-02-02 09:27:18 UTC
Size:
935 bytes
patch
obsolete
>--- drivers/ide/pci/atiixp.c.orig 2007-02-02 05:54:49.789527848 +0800 >+++ drivers/ide/pci/atiixp.c 2007-02-02 05:54:49.785528456 +0800 >@@ -427,8 +427,12 @@ > > static void __devinit init_hwif_atiixp(ide_hwif_t *hwif) > { >+ u8 udma_mode = 0; >+ u8 ch = hwif->channel; >+ struct pci_dev *pdev = hwif->pci_dev; >+ > if (!hwif->irq) >- hwif->irq = hwif->channel ? 15 : 14; >+ hwif->irq = ch ? 15 : 14; > > hwif->autodma = 0; > hwif->tuneproc = &atiixp_tuneproc; >@@ -444,8 +448,12 @@ > hwif->mwdma_mask = 0x06; > hwif->swdma_mask = 0x04; > >- /* FIXME: proper cable detection needed */ >- hwif->udma_four = 1; >+ pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode); >+ if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40) >+ hwif->udma_four = 1; >+ else >+ hwif->udma_four = 0; >+ > hwif->ide_dma_host_on = &atiixp_ide_dma_host_on; > hwif->ide_dma_host_off = &atiixp_ide_dma_host_off; > hwif->ide_dma_check = &atiixp_dma_check;
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