diff options
Diffstat (limited to 'drivers/ata/pata_cmd64x.c')
| -rw-r--r-- | drivers/ata/pata_cmd64x.c | 73 |
1 files changed, 56 insertions, 17 deletions
diff --git a/drivers/ata/pata_cmd64x.c b/drivers/ata/pata_cmd64x.c index 028638c7c1d9..f0dcb7056b19 100644 --- a/drivers/ata/pata_cmd64x.c +++ b/drivers/ata/pata_cmd64x.c @@ -3,6 +3,7 @@ * (C) 2005 Red Hat Inc * Alan Cox <alan@lxorguk.ukuu.org.uk> * (C) 2009-2010 Bartlomiej Zolnierkiewicz + * (C) 2012 MontaVista Software, LLC <source@mvista.com> * * Based upon * linux/drivers/ide/pci/cmd64x.c Version 1.30 Sept 10, 2002 @@ -32,7 +33,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_cmd64x" -#define DRV_VERSION "0.2.15" +#define DRV_VERSION "0.2.16" /* * CMD64x specific registers definition. @@ -229,7 +230,27 @@ static void cmd64x_set_dmamode(struct ata_port *ap, struct ata_device *adev) } /** - * cmd648_dma_stop - DMA stop callback + * cmd64x_bmdma_stop - DMA stop callback + * @qc: Command in progress + * + * DMA has completed. + */ + +static void cmd64x_bmdma_stop(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct pci_dev *pdev = to_pci_dev(ap->host->dev); + int irq_reg = ap->port_no ? ARTTIM23 : CFR; + u8 irq_stat; + + ata_bmdma_stop(qc); + + /* Reading the register should be enough to clear the interrupt */ + pci_read_config_byte(pdev, irq_reg, &irq_stat); +} + +/** + * cmd648_bmdma_stop - DMA stop callback * @qc: Command in progress * * DMA has completed. @@ -239,18 +260,20 @@ static void cmd648_bmdma_stop(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct pci_dev *pdev = to_pci_dev(ap->host->dev); - u8 dma_intr; - int dma_mask = ap->port_no ? ARTTIM23_INTR_CH1 : CFR_INTR_CH0; - int dma_reg = ap->port_no ? ARTTIM23 : CFR; + unsigned long base = pci_resource_start(pdev, 4); + int irq_mask = ap->port_no ? MRDMODE_INTR_CH1 : MRDMODE_INTR_CH0; + u8 mrdmode; ata_bmdma_stop(qc); - pci_read_config_byte(pdev, dma_reg, &dma_intr); - pci_write_config_byte(pdev, dma_reg, dma_intr | dma_mask); + /* Clear this port's interrupt bit (leaving the other port alone) */ + mrdmode = inb(base + 1); + mrdmode &= ~(MRDMODE_INTR_CH0 | MRDMODE_INTR_CH1); + outb(mrdmode | irq_mask, base + 1); } /** - * cmd646r1_dma_stop - DMA stop callback + * cmd646r1_bmdma_stop - DMA stop callback * @qc: Command in progress * * Stub for now while investigating the r1 quirk in the old driver. @@ -273,6 +296,7 @@ static const struct ata_port_operations cmd64x_base_ops = { static struct ata_port_operations cmd64x_port_ops = { .inherits = &cmd64x_base_ops, + .bmdma_stop = cmd64x_bmdma_stop, .cable_detect = ata_cable_40wire, }; @@ -282,6 +306,12 @@ static struct ata_port_operations cmd646r1_port_ops = { .cable_detect = ata_cable_40wire, }; +static struct ata_port_operations cmd646r3_port_ops = { + .inherits = &cmd64x_base_ops, + .bmdma_stop = cmd648_bmdma_stop, + .cable_detect = ata_cable_40wire, +}; + static struct ata_port_operations cmd648_port_ops = { .inherits = &cmd64x_base_ops, .bmdma_stop = cmd648_bmdma_stop, @@ -306,7 +336,7 @@ static void cmd64x_fixup(struct pci_dev *pdev) static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id) { - static const struct ata_port_info cmd_info[6] = { + static const struct ata_port_info cmd_info[7] = { { /* CMD 643 - no UDMA */ .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, @@ -319,12 +349,18 @@ static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id) .mwdma_mask = ATA_MWDMA2, .port_ops = &cmd64x_port_ops }, - { /* CMD 646 with working UDMA */ + { /* CMD 646U with broken UDMA */ + .flags = ATA_FLAG_SLAVE_POSS, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .port_ops = &cmd646r3_port_ops + }, + { /* CMD 646U2 with working UDMA */ .flags = ATA_FLAG_SLAVE_POSS, .pio_mask = ATA_PIO4, .mwdma_mask = ATA_MWDMA2, .udma_mask = ATA_UDMA2, - .port_ops = &cmd64x_port_ops + .port_ops = &cmd646r3_port_ops }, { /* CMD 646 rev 1 */ .flags = ATA_FLAG_SLAVE_POSS, @@ -372,16 +408,19 @@ static int cmd64x_init_one(struct pci_dev *pdev, const struct pci_device_id *id) switch (pdev->revision) { /* UDMA works since rev 5 */ default: - ppi[0] = &cmd_info[2]; - ppi[1] = &cmd_info[2]; + ppi[0] = &cmd_info[3]; + ppi[1] = &cmd_info[3]; break; + /* Interrupts in MRDMODE since rev 3 */ case 3: case 4: + ppi[0] = &cmd_info[2]; + ppi[1] = &cmd_info[2]; break; /* Rev 1 with other problems? */ case 1: - ppi[0] = &cmd_info[3]; - ppi[1] = &cmd_info[3]; + ppi[0] = &cmd_info[4]; + ppi[1] = &cmd_info[4]; /* FALL THRU */ /* Early revs have no CNTRL_CH0 */ case 2: @@ -429,8 +468,8 @@ static int cmd64x_reinit_one(struct pci_dev *pdev) static const struct pci_device_id cmd64x[] = { { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_643), 0 }, { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_646), 1 }, - { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 4 }, - { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 5 }, + { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_648), 5 }, + { PCI_VDEVICE(CMD, PCI_DEVICE_ID_CMD_649), 6 }, { }, }; |