diff options
| -rw-r--r-- | drivers/ide/pci/via82cxxx.c | 138 |
1 files changed, 65 insertions, 73 deletions
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c index 61f1a9665a7..381cc6f101c 100644 --- a/drivers/ide/pci/via82cxxx.c +++ b/drivers/ide/pci/via82cxxx.c @@ -123,7 +123,7 @@ struct via82cxxx_dev static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing) { struct pci_dev *dev = hwif->pci_dev; - struct via82cxxx_dev *vdev = ide_get_hwifdata(hwif); + struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); u8 t; if (~vdev->via_config->flags & VIA_BAD_AST) { @@ -162,7 +162,7 @@ static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing) static int via_set_drive(ide_drive_t *drive, u8 speed) { ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1); - struct via82cxxx_dev *vdev = ide_get_hwifdata(drive->hwif); + struct via82cxxx_dev *vdev = pci_get_drvdata(drive->hwif->pci_dev); struct ide_timing t, p; unsigned int T, UT; @@ -225,7 +225,7 @@ static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio) static int via82cxxx_ide_dma_check (ide_drive_t *drive) { ide_hwif_t *hwif = HWIF(drive); - struct via82cxxx_dev *vdev = ide_get_hwifdata(hwif); + struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); u16 w80 = hwif->udma_four; u16 speed = ide_find_best_mode(drive, @@ -262,6 +262,53 @@ static struct via_isa_bridge *via_config_find(struct pci_dev **isa) return via_config; } +/* + * Check and handle 80-wire cable presence + */ +static void __devinit via_cable_detect(struct via82cxxx_dev *vdev, u32 u) +{ + int i; + + switch (vdev->via_config->flags & VIA_UDMA) { + case VIA_UDMA_66: + for (i = 24; i >= 0; i -= 8) + if (((u >> (i & 16)) & 8) && + ((u >> i) & 0x20) && + (((u >> i) & 7) < 2)) { + /* + * 2x PCI clock and + * UDMA w/ < 3T/cycle + */ + vdev->via_80w |= (1 << (1 - (i >> 4))); + } + break; + + case VIA_UDMA_100: + for (i = 24; i >= 0; i -= 8) + if (((u >> i) & 0x10) || + (((u >> i) & 0x20) && + (((u >> i) & 7) < 4))) { + /* BIOS 80-wire bit or + * UDMA w/ < 60ns/cycle + */ + vdev->via_80w |= (1 << (1 - (i >> 4))); + } + break; + + case VIA_UDMA_133: + for (i = 24; i >= 0; i -= 8) + if (((u >> i) & 0x10) || + (((u >> i) & 0x20) && + (((u >> i) & 7) < 6))) { + /* BIOS 80-wire bit or + * UDMA w/ < 60ns/cycle + */ + vdev->via_80w |= (1 << (1 - (i >> 4))); + } + break; + } +} + /** * init_chipset_via82cxxx - initialization handler * @dev: PCI device @@ -274,14 +321,22 @@ static struct via_isa_bridge *via_config_find(struct pci_dev **isa) static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const char *name) { struct pci_dev *isa = NULL; + struct via82cxxx_dev *vdev; struct via_isa_bridge *via_config; u8 t, v; - unsigned int u; + u32 u; + + vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); + if (!vdev) { + printk(KERN_ERR "VP_IDE: out of memory :(\n"); + return -ENOMEM; + } + pci_set_drvdata(dev, vdev); /* * Find the ISA bridge to see how good the IDE is. */ - via_config = via_config_find(&isa); + vdev->via_config = via_config = via_config_find(&isa); /* We checked this earlier so if it fails here deeep badness is involved */ @@ -289,16 +344,17 @@ static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const BUG_ON(!via_config->id); /* - * Setup or disable Clk66 if appropriate + * Detect cable and configure Clk66 */ + pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); + + via_cable_detect(vdev, u); if ((via_config->flags & VIA_UDMA) == VIA_UDMA_66) { /* Enable Clk66 */ - pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008); } else if (via_config->flags & VIA_BAD_CLK66) { /* Would cause trouble on 596a and 686 */ - pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008); } @@ -367,75 +423,11 @@ static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const return 0; } -/* - * Check and handle 80-wire cable presence - */ -static void __devinit via_cable_detect(struct pci_dev *dev, struct via82cxxx_dev *vdev) -{ - unsigned int u; - int i; - pci_read_config_dword(dev, VIA_UDMA_TIMING, &u); - - switch (vdev->via_config->flags & VIA_UDMA) { - - case VIA_UDMA_66: - for (i = 24; i >= 0; i -= 8) - if (((u >> (i & 16)) & 8) && - ((u >> i) & 0x20) && - (((u >> i) & 7) < 2)) { - /* - * 2x PCI clock and - * UDMA w/ < 3T/cycle - */ - vdev->via_80w |= (1 << (1 - (i >> 4))); - } - break; - - case VIA_UDMA_100: - for (i = 24; i >= 0; i -= 8) - if (((u >> i) & 0x10) || - (((u >> i) & 0x20) && - (((u >> i) & 7) < 4))) { - /* BIOS 80-wire bit or - * UDMA w/ < 60ns/cycle - */ - vdev->via_80w |= (1 << (1 - (i >> 4))); - } - break; - - case VIA_UDMA_133: - for (i = 24; i >= 0; i -= 8) - if (((u >> i) & 0x10) || - (((u >> i) & 0x20) && - (((u >> i) & 7) < 6))) { - /* BIOS 80-wire bit or - * UDMA w/ < 60ns/cycle - */ - vdev->via_80w |= (1 << (1 - (i >> 4))); - } - break; - - } -} - static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif) { - struct via82cxxx_dev *vdev = kmalloc(sizeof(struct via82cxxx_dev), - GFP_KERNEL); - struct pci_dev *isa = NULL; + struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev); int i; - if (vdev == NULL) { - printk(KERN_ERR "VP_IDE: out of memory :(\n"); - return; - } - - memset(vdev, 0, sizeof(struct via82cxxx_dev)); - ide_set_hwifdata(hwif, vdev); - - vdev->via_config = via_config_find(&isa); - via_cable_detect(hwif->pci_dev, vdev); - hwif->autodma = 0; hwif->tuneproc = &via82cxxx_tune_drive; |