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| author | Alan <alan@lxorguk.ukuu.org.uk> | 2007-02-20 17:49:25 +0000 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-02-21 04:58:20 -0500 |
| commit | cb0e34ba59a1b883009d69673179c6cde70acc25 (patch) | |
| tree | 026fcf2a8a85676b5f37ba583c551ad0201f62b3 /drivers/ata/pata_sil680.c | |
| parent | b7939b14d8dd9cb4a3ebfaea1416695e4b6d4a42 (diff) | |
| download | lwn-cb0e34ba59a1b883009d69673179c6cde70acc25.tar.gz lwn-cb0e34ba59a1b883009d69673179c6cde70acc25.zip | |
pata_sil680: Assorted fixes
Correct iordy handling and DMA bit flag handling.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/pata_sil680.c')
| -rw-r--r-- | drivers/ata/pata_sil680.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/ata/pata_sil680.c b/drivers/ata/pata_sil680.c index ed79fabe025c..5f10a33f92f5 100644 --- a/drivers/ata/pata_sil680.c +++ b/drivers/ata/pata_sil680.c @@ -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 @@ static void sil680_set_piomode(struct ata_port *ap, struct ata_device *adev) 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 @@ static void sil680_set_piomode(struct ata_port *ap, struct ata_device *adev) 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); } /** |