diff options
author | John W. Linville <linville@tuxdriver.com> | 2010-04-08 13:34:54 -0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2010-04-08 13:34:54 -0400 |
commit | 0f2df9eac70423838a1f8d410fd3899ddd88317b (patch) | |
tree | 0617f723320d83eca5cef9c964c001014e74213f /drivers/ata/pata_hpt37x.c | |
parent | 8c11e4ab09ffb975a89802dde0e9aa52a53b8aa5 (diff) | |
parent | 1144601118507f8b3b676a9a392584d216d3f2cc (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into merge
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/net/wireless/ath/ath5k/phy.c
drivers/net/wireless/iwlwifi/iwl-4965.c
drivers/net/wireless/iwlwifi/iwl-agn.c
drivers/net/wireless/iwlwifi/iwl-core.c
drivers/net/wireless/iwlwifi/iwl-core.h
drivers/net/wireless/iwlwifi/iwl-tx.c
Diffstat (limited to 'drivers/ata/pata_hpt37x.c')
-rw-r--r-- | drivers/ata/pata_hpt37x.c | 189 |
1 files changed, 85 insertions, 104 deletions
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index 4224cfccede..8839307a64c 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -24,7 +24,7 @@ #include <linux/libata.h> #define DRV_NAME "pata_hpt37x" -#define DRV_VERSION "0.6.14" +#define DRV_VERSION "0.6.15" struct hpt_clock { u8 xfer_speed; @@ -39,25 +39,24 @@ struct hpt_chip { /* key for bus clock timings * bit - * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW - * DMA. cycles = value + 1 - * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW - * DMA. cycles = value + 1 - * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file + * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA. + * cycles = value + 1 + * 4:8 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA. + * cycles = value + 1 + * 9:12 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file * register access. - * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file + * 13:17 cmd_low_time. Active time of DIOW_/DIOR_ during task file * register access. - * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer. - * during task file register access. - * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA - * xfer. - * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task + * 18:20 udma_cycle_time. Clock cycles for UDMA xfer. + * 21 CLK frequency for UDMA: 0=ATA clock, 1=dual ATA clock. + * 22:24 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer. + * 25:27 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file * register access. - * 28 UDMA enable - * 29 DMA enable - * 30 PIO_MST enable. if set, the chip is in bus master mode during - * PIO. - * 31 FIFO enable. + * 28 UDMA enable. + * 29 DMA enable. + * 30 PIO_MST enable. If set, the chip is in bus master mode during + * PIO xfer. + * 31 FIFO enable. Only for PIO. */ static struct hpt_clock hpt37x_timings_33[] = { @@ -384,20 +383,12 @@ static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline) return ata_sff_prereset(link, deadline); } -/** - * hpt370_set_piomode - PIO setup - * @ap: ATA interface - * @adev: device on the interface - * - * Perform PIO mode setup. - */ - -static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) +static void hpt370_set_mode(struct ata_port *ap, struct ata_device *adev, + u8 mode) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); u32 addr1, addr2; - u32 reg; - u32 mode; + u32 reg, timing, mask; u8 fast; addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); @@ -409,11 +400,31 @@ static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) fast |= 0x01; pci_write_config_byte(pdev, addr2, fast); + /* Determine timing mask and find matching mode entry */ + if (mode < XFER_MW_DMA_0) + mask = 0xcfc3ffff; + else if (mode < XFER_UDMA_0) + mask = 0x31c001ff; + else + mask = 0x303c0000; + + timing = hpt37x_find_mode(ap, mode); + pci_read_config_dword(pdev, addr1, ®); - mode = hpt37x_find_mode(ap, adev->pio_mode); - mode &= 0xCFC3FFFF; /* Leave DMA bits alone */ - reg &= ~0xCFC3FFFF; /* Strip timing bits */ - pci_write_config_dword(pdev, addr1, reg | mode); + reg = (reg & ~mask) | (timing & mask); + pci_write_config_dword(pdev, addr1, reg); +} +/** + * hpt370_set_piomode - PIO setup + * @ap: ATA interface + * @adev: device on the interface + * + * Perform PIO mode setup. + */ + +static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + hpt370_set_mode(ap, adev, adev->pio_mode); } /** @@ -421,33 +432,12 @@ static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) * @ap: ATA interface * @adev: Device being configured * - * Set up the channel for MWDMA or UDMA modes. Much the same as with - * PIO, load the mode number and then set MWDMA or UDMA flag. + * Set up the channel for MWDMA or UDMA modes. */ static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev) { - struct pci_dev *pdev = to_pci_dev(ap->host->dev); - u32 addr1, addr2; - u32 reg, mode, mask; - u8 fast; - - addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); - addr2 = 0x51 + 4 * ap->port_no; - - /* Fast interrupt prediction disable, hold off interrupt disable */ - pci_read_config_byte(pdev, addr2, &fast); - fast &= ~0x02; - fast |= 0x01; - pci_write_config_byte(pdev, addr2, fast); - - mask = adev->dma_mode < XFER_UDMA_0 ? 0x31C001FF : 0x303C0000; - - pci_read_config_dword(pdev, addr1, ®); - mode = hpt37x_find_mode(ap, adev->dma_mode); - mode &= mask; - reg &= ~mask; - pci_write_config_dword(pdev, addr1, reg | mode); + hpt370_set_mode(ap, adev, adev->dma_mode); } /** @@ -461,24 +451,25 @@ static void hpt370_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_stat = ioread8(ap->ioaddr.bmdma_addr + 2); - u8 dma_cmd; void __iomem *bmdma = ap->ioaddr.bmdma_addr; + u8 dma_stat = ioread8(bmdma + ATA_DMA_STATUS); + u8 dma_cmd; - if (dma_stat & 0x01) { + if (dma_stat & ATA_DMA_ACTIVE) { udelay(20); - dma_stat = ioread8(bmdma + 2); + dma_stat = ioread8(bmdma + ATA_DMA_STATUS); } - if (dma_stat & 0x01) { + if (dma_stat & ATA_DMA_ACTIVE) { /* Clear the engine */ pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); udelay(10); /* Stop DMA */ - dma_cmd = ioread8(bmdma ); - iowrite8(dma_cmd & 0xFE, bmdma); + dma_cmd = ioread8(bmdma + ATA_DMA_CMD); + iowrite8(dma_cmd & ~ATA_DMA_START, bmdma + ATA_DMA_CMD); /* Clear Error */ - dma_stat = ioread8(bmdma + 2); - iowrite8(dma_stat | 0x06 , bmdma + 2); + dma_stat = ioread8(bmdma + ATA_DMA_STATUS); + iowrite8(dma_stat | ATA_DMA_INTR | ATA_DMA_ERR, + bmdma + ATA_DMA_STATUS); /* Clear the engine */ pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); udelay(10); @@ -486,20 +477,12 @@ static void hpt370_bmdma_stop(struct ata_queued_cmd *qc) ata_bmdma_stop(qc); } -/** - * hpt372_set_piomode - PIO setup - * @ap: ATA interface - * @adev: device on the interface - * - * Perform PIO mode setup. - */ - -static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) +static void hpt372_set_mode(struct ata_port *ap, struct ata_device *adev, + u8 mode) { struct pci_dev *pdev = to_pci_dev(ap->host->dev); u32 addr1, addr2; - u32 reg; - u32 mode; + u32 reg, timing, mask; u8 fast; addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); @@ -510,13 +493,32 @@ static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) fast &= ~0x07; pci_write_config_byte(pdev, addr2, fast); + /* Determine timing mask and find matching mode entry */ + if (mode < XFER_MW_DMA_0) + mask = 0xcfc3ffff; + else if (mode < XFER_UDMA_0) + mask = 0x31c001ff; + else + mask = 0x303c0000; + + timing = hpt37x_find_mode(ap, mode); + pci_read_config_dword(pdev, addr1, ®); - mode = hpt37x_find_mode(ap, adev->pio_mode); + reg = (reg & ~mask) | (timing & mask); + pci_write_config_dword(pdev, addr1, reg); +} + +/** + * hpt372_set_piomode - PIO setup + * @ap: ATA interface + * @adev: device on the interface + * + * Perform PIO mode setup. + */ - printk("Find mode for %d reports %X\n", adev->pio_mode, mode); - mode &= 0xCFC3FFFF; /* Leave DMA bits alone */ - reg &= ~0xCFC3FFFF; /* Strip timing bits */ - pci_write_config_dword(pdev, addr1, reg | mode); +static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + hpt372_set_mode(ap, adev, adev->pio_mode); } /** @@ -524,33 +526,12 @@ static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) * @ap: ATA interface * @adev: Device being configured * - * Set up the channel for MWDMA or UDMA modes. Much the same as with - * PIO, load the mode number and then set MWDMA or UDMA flag. + * Set up the channel for MWDMA or UDMA modes. */ static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev) { - struct pci_dev *pdev = to_pci_dev(ap->host->dev); - u32 addr1, addr2; - u32 reg, mode, mask; - u8 fast; - - addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); - addr2 = 0x51 + 4 * ap->port_no; - - /* Fast interrupt prediction disable, hold off interrupt disable */ - pci_read_config_byte(pdev, addr2, &fast); - fast &= ~0x07; - pci_write_config_byte(pdev, addr2, fast); - - mask = adev->dma_mode < XFER_UDMA_0 ? 0x31C001FF : 0x303C0000; - - pci_read_config_dword(pdev, addr1, ®); - mode = hpt37x_find_mode(ap, adev->dma_mode); - printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode); - mode &= mask; - reg &= ~mask; - pci_write_config_dword(pdev, addr1, reg | mode); + hpt372_set_mode(ap, adev, adev->dma_mode); } /** @@ -1006,7 +987,7 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) } /* Now kick off ATA set up */ - return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data); + return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data, 0); } static const struct pci_device_id hpt37x[] = { |