Messages in this thread Patch in this message |  | | Date | Tue, 20 Feb 2007 17:49:25 +0000 | From | Alan <> | Subject | [PATCH] pata_sil680: Assorted fixes |
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Correct iordy handling and DMA bit flag handling.
Signed-off-by: Alan Cox <alan@redhat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.20-mm2/drivers/ata/pata_sil680.c linux-2.6.20-mm2/drivers/ata/pata_sil680.c --- linux.vanilla-2.6.20-mm2/drivers/ata/pata_sil680.c 2007-02-20 13:37:58.000000000 +0000 +++ linux-2.6.20-mm2/drivers/ata/pata_sil680.c 2007-02-20 13:56:39.000000000 +0000 @@ -33,7 +33,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_sil680" -#define DRV_VERSION "0.4.1" +#define DRV_VERSION "0.4.5" /** * sil680_selreg - return register base @@ -139,10 +139,13 @@ unsigned long tfaddr = sil680_selreg(ap, 0x02); unsigned long addr = sil680_seldev(ap, adev, 0x04); + unsigned long addr_mask = 0x80 + 4 * ap->port_no; struct pci_dev *pdev = to_pci_dev(ap->host->dev); int pio = adev->pio_mode - XFER_PIO_0; int lowest_pio = pio; + int port_shift = 4 * adev->devno; u16 reg; + u8 mode; struct ata_device *pair = ata_dev_pair(adev); @@ -153,10 +156,17 @@ pci_write_config_word(pdev, tfaddr, speed_t[lowest_pio]); pci_read_config_word(pdev, tfaddr-2, ®); + pci_read_config_byte(pdev, addr_mask, &mode); + reg &= ~0x0200; /* Clear IORDY */ - if (ata_pio_need_iordy(adev)) + mode &= ~(3 << port_shift); /* Clear IORDY and DMA bits */ + + if (ata_pio_need_iordy(adev)) { reg |= 0x0200; /* Enable IORDY */ + mode |= 1 << port_shift; + } pci_write_config_word(pdev, tfaddr-2, reg); + pci_write_config_byte(pdev, addr_mask, mode); } /** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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