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Commit 73946f9f authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
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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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 7f2803d0

drivers/ata/pata_hpt37x.c

+36 −13
Original line number Diff line number Diff line
@@ -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);



	if ((freq >> 12) != 0xABCDE) {

		int i;

		u8 sr;