From: Alan Date: Tue, 20 Feb 2007 17:49:25 +0000 (+0000) Subject: pata_sil680: Assorted fixes X-Git-Tag: v2.6.21-rc2~25^2~21 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cb0e34ba59a1b883009d69673179c6cde70acc25;p=karo-tx-linux.git pata_sil680: Assorted fixes Correct iordy handling and DMA bit flag handling. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- 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 #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); } /**