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pata_hpt37x: Fix outstanding bug reports on the HPT374 and 37x cable detect 

- Read frequency correctly
- Correct cable detect handling
- Fix wrong filter test

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2007-11-05 22:53:38 +00:00 committed by Jeff Garzik
parent 7f2803d026
commit 73946f9fc5
1 changed files with 36 additions and 13 deletions
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49
drivers/ata/pata_hpt37x.c
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@ -295,7 +295,7 @@ static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask)
static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
{
if (adev->class != ATA_DEV_ATA) {
if (adev->class == ATA_DEV_ATA) {
if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
mask &= ~ (0x1F << ATA_SHIFT_UDMA);
}
@ -359,28 +359,25 @@ static int hpt374_pre_reset(struct ata_link *link, unsigned long deadline)
{ 0x50, 1, 0x04, 0x04 },
{ 0x54, 1, 0x04, 0x04 }
};
u16 mcr3, mcr6;
u16 mcr3;
u8 ata66;
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int mcrbase = 0x50 + 4 * ap->port_no;
if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
return -ENOENT;
/* Do the extra channel work */
pci_read_config_word(pdev, 0x52, &mcr3);
pci_read_config_word(pdev, 0x56, &mcr6);
pci_read_config_word(pdev, mcrbase + 2, &mcr3);
/* Set bit 15 of 0x52 to enable TCBLID as input
Set bit 15 of 0x56 to enable FCBLID as input
*/
pci_write_config_word(pdev, 0x52, mcr3 | 0x8000);
pci_write_config_word(pdev, 0x56, mcr6 | 0x8000);
pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000);
pci_read_config_byte(pdev, 0x5A, &ata66);
/* Reset TCBLID/FCBLID to output */
pci_write_config_word(pdev, 0x52, mcr3);
pci_write_config_word(pdev, 0x56, mcr6);
if (ata66 & (1 << ap->port_no))
if (ata66 & (2 >> ap->port_no))
ap->cbl = ATA_CBL_PATA40;
else
ap->cbl = ATA_CBL_PATA80;
@ -844,6 +841,25 @@ static int hpt37x_calibrate_dpll(struct pci_dev *dev)
/* Never went stable */
return 0;
}
static u32 hpt374_read_freq(struct pci_dev *pdev)
{
u32 freq;
unsigned long io_base = pci_resource_start(pdev, 4);
if (PCI_FUNC(pdev->devfn) & 1) {
struct pci_dev *pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
/* Someone hot plugged the controller on us ? */
if (pdev_0 == NULL)
return 0;
io_base = pci_resource_start(pdev_0, 4);
freq = inl(io_base + 0x90);
pci_dev_put(pdev_0);
}
else
freq = inl(io_base + 0x90);
return freq;
}
/**
* hpt37x_init_one - Initialise an HPT37X/302
* @dev: PCI device
@ -902,7 +918,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x0f,
.udma_mask = ATA_UDMA5,
.port_ops = &hpt370_port_ops
};
/* HPT370A - UDMA100 */
@ -911,7 +927,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
.flags = ATA_FLAG_SLAVE_POSS,
.pio_mask = 0x1f,
.mwdma_mask = 0x07,
.udma_mask = 0x0f,
.udma_mask = ATA_UDMA5,
.port_ops = &hpt370a_port_ops
};
/* HPT371, 372 and friends - UDMA133 */
@ -1047,9 +1063,16 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
outb(0x0e, iobase + 0x9c);
/* Some devices do not let this value be accessed via PCI space
according to the old driver */
according to the old driver. In addition we must use the value
from FN 0 on the HPT374 */
if (chip_table == &hpt374) {
freq = hpt374_read_freq(dev);
if (freq == 0)
return -ENODEV;
} else
freq = inl(iobase + 0x90);
freq = inl(iobase + 0x90);
if ((freq >> 12) != 0xABCDE) {
int i;
u8 sr;