From 5816fbbf22470b687964462e6c1f18165b291f22 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Wed, 7 Mar 2007 16:46:20 +0000 Subject: pata_it8213: Cable detect Another not-quite PIIX, another cable type conversion Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_it8213.c | 36 +++++++++++++++++++++++------------- 1 file changed, 23 insertions(+), 13 deletions(-) (limited to 'drivers/ata/pata_it8213.c') diff --git a/drivers/ata/pata_it8213.c b/drivers/ata/pata_it8213.c index ea734701555..011306ef833 100644 --- a/drivers/ata/pata_it8213.c +++ b/drivers/ata/pata_it8213.c @@ -25,8 +25,8 @@ * it8213_pre_reset - check for 40/80 pin * @ap: Port * - * Perform cable detection for the 8213 ATA interface. This is - * different to the PIIX arrangement + * Filter out ports by the enable bits before doing the normal reset + * and probe. */ static int it8213_pre_reset(struct ata_port *ap) @@ -34,23 +34,14 @@ static int it8213_pre_reset(struct ata_port *ap) static const struct pci_bits it8213_enable_bits[] = { { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */ }; - struct pci_dev *pdev = to_pci_dev(ap->host->dev); - u8 tmp; - if (!pci_test_config_bits(pdev, &it8213_enable_bits[ap->port_no])) return -ENOENT; - - pci_read_config_byte(pdev, 0x42, &tmp); - if (tmp & 2) /* The initial docs are incorrect */ - ap->cbl = ATA_CBL_PATA40; - else - ap->cbl = ATA_CBL_PATA80; return ata_std_prereset(ap); } /** - * it8213_probe_reset - Probe specified port on PATA host controller + * it8213_error_handler - Probe specified port on PATA host controller * @ap: Port to probe * * LOCKING: @@ -62,10 +53,28 @@ static void it8213_error_handler(struct ata_port *ap) ata_bmdma_drive_eh(ap, it8213_pre_reset, ata_std_softreset, NULL, ata_std_postreset); } +/** + * it8213_cable_detect - check for 40/80 pin + * @ap: Port + * + * Perform cable detection for the 8213 ATA interface. This is + * different to the PIIX arrangement + */ + +static int it8213_cable_detect(struct ata_port *ap) +{ + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + u8 tmp; + pci_read_config_byte(pdev, 0x42, &tmp); + if (tmp & 2) /* The initial docs are incorrect */ + return ATA_CBL_PATA40; + return ATA_CBL_PATA80; +} + /** * it8213_set_piomode - Initialize host controller PATA PIO timings * @ap: Port whose timings we are configuring - * @adev: um + * @adev: Device whose timings we are configuring * * Set PIO mode for device, in host controller PCI config space. * @@ -268,6 +277,7 @@ static const struct ata_port_operations it8213_ops = { .thaw = ata_bmdma_thaw, .error_handler = it8213_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = it8213_cable_detect, .bmdma_setup = ata_bmdma_setup, .bmdma_start = ata_bmdma_start, -- cgit v1.2.3