diff options
Diffstat (limited to 'drivers/ide/pci/siimage.c')
| -rw-r--r-- | drivers/ide/pci/siimage.c | 1133 |
1 files changed, 1133 insertions, 0 deletions
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c new file mode 100644 index 000000000000..2b9961b88135 --- /dev/null +++ b/drivers/ide/pci/siimage.c @@ -0,0 +1,1133 @@ +/* + * linux/drivers/ide/pci/siimage.c Version 1.07 Nov 30, 2003 + * + * Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org> + * Copyright (C) 2003 Red Hat <alan@redhat.com> + * + * May be copied or modified under the terms of the GNU General Public License + * + * Documentation available under NDA only + * + * + * FAQ Items: + * If you are using Marvell SATA-IDE adapters with Maxtor drives + * ensure the system is set up for ATA100/UDMA5 not UDMA6. + * + * If you are using WD drives with SATA bridges you must set the + * drive to "Single". "Master" will hang + * + * If you have strange problems with nVidia chipset systems please + * see the SI support documentation and update your system BIOS + * if neccessary + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/hdreg.h> +#include <linux/ide.h> +#include <linux/init.h> + +#include <asm/io.h> + +#undef SIIMAGE_VIRTUAL_DMAPIO +#undef SIIMAGE_LARGE_DMA + +/** + * pdev_is_sata - check if device is SATA + * @pdev: PCI device to check + * + * Returns true if this is a SATA controller + */ + +static int pdev_is_sata(struct pci_dev *pdev) +{ + switch(pdev->device) + { + case PCI_DEVICE_ID_SII_3112: + case PCI_DEVICE_ID_SII_1210SA: + return 1; + case PCI_DEVICE_ID_SII_680: + return 0; + } + BUG(); + return 0; +} + +/** + * is_sata - check if hwif is SATA + * @hwif: interface to check + * + * Returns true if this is a SATA controller + */ + +static inline int is_sata(ide_hwif_t *hwif) +{ + return pdev_is_sata(hwif->pci_dev); +} + +/** + * siimage_selreg - return register base + * @hwif: interface + * @r: config offset + * + * Turn a config register offset into the right address in either + * PCI space or MMIO space to access the control register in question + * Thankfully this is a configuration operation so isnt performance + * criticial. + */ + +static unsigned long siimage_selreg(ide_hwif_t *hwif, int r) +{ + unsigned long base = (unsigned long)hwif->hwif_data; + base += 0xA0 + r; + if(hwif->mmio) + base += (hwif->channel << 6); + else + base += (hwif->channel << 4); + return base; +} + +/** + * siimage_seldev - return register base + * @hwif: interface + * @r: config offset + * + * Turn a config register offset into the right address in either + * PCI space or MMIO space to access the control register in question + * including accounting for the unit shift. + */ + +static inline unsigned long siimage_seldev(ide_drive_t *drive, int r) +{ + ide_hwif_t *hwif = HWIF(drive); + unsigned long base = (unsigned long)hwif->hwif_data; + base += 0xA0 + r; + if(hwif->mmio) + base += (hwif->channel << 6); + else + base += (hwif->channel << 4); + base |= drive->select.b.unit << drive->select.b.unit; + return base; +} + +/** + * siimage_ratemask - Compute available modes + * @drive: IDE drive + * + * Compute the available speeds for the devices on the interface. + * For the CMD680 this depends on the clocking mode (scsc), for the + * SI3312 SATA controller life is a bit simpler. Enforce UDMA33 + * as a limit if there is no 80pin cable present. + */ + +static byte siimage_ratemask (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + u8 mode = 0, scsc = 0; + unsigned long base = (unsigned long) hwif->hwif_data; + + if (hwif->mmio) + scsc = hwif->INB(base + 0x4A); + else + pci_read_config_byte(hwif->pci_dev, 0x8A, &scsc); + + if(is_sata(hwif)) + { + if(strstr(drive->id->model, "Maxtor")) + return 3; + return 4; + } + + if ((scsc & 0x30) == 0x10) /* 133 */ + mode = 4; + else if ((scsc & 0x30) == 0x20) /* 2xPCI */ + mode = 4; + else if ((scsc & 0x30) == 0x00) /* 100 */ + mode = 3; + else /* Disabled ? */ + BUG(); + + if (!eighty_ninty_three(drive)) + mode = min(mode, (u8)1); + return mode; +} + +/** + * siimage_taskfile_timing - turn timing data to a mode + * @hwif: interface to query + * + * Read the timing data for the interface and return the + * mode that is being used. + */ + +static byte siimage_taskfile_timing (ide_hwif_t *hwif) +{ + u16 timing = 0x328a; + unsigned long addr = siimage_selreg(hwif, 2); + + if (hwif->mmio) + timing = hwif->INW(addr); + else + pci_read_config_word(hwif->pci_dev, addr, &timing); + + switch (timing) { + case 0x10c1: return 4; + case 0x10c3: return 3; + case 0x1104: + case 0x1281: return 2; + case 0x2283: return 1; + case 0x328a: + default: return 0; + } +} + +/** + * simmage_tuneproc - tune a drive + * @drive: drive to tune + * @mode_wanted: the target operating mode + * + * Load the timing settings for this device mode into the + * controller. If we are in PIO mode 3 or 4 turn on IORDY + * monitoring (bit 9). The TF timing is bits 31:16 + */ + +static void siimage_tuneproc (ide_drive_t *drive, byte mode_wanted) +{ + ide_hwif_t *hwif = HWIF(drive); + u32 speedt = 0; + u16 speedp = 0; + unsigned long addr = siimage_seldev(drive, 0x04); + unsigned long tfaddr = siimage_selreg(hwif, 0x02); + + /* cheat for now and use the docs */ + switch(mode_wanted) { + case 4: + speedp = 0x10c1; + speedt = 0x10c1; + break; + case 3: + speedp = 0x10C3; + speedt = 0x10C3; + break; + case 2: + speedp = 0x1104; + speedt = 0x1281; + break; + case 1: + speedp = 0x2283; + speedt = 0x1281; + break; + case 0: + default: + speedp = 0x328A; + speedt = 0x328A; + break; + } + if (hwif->mmio) + { + hwif->OUTW(speedt, addr); + hwif->OUTW(speedp, tfaddr); + /* Now set up IORDY */ + if(mode_wanted == 3 || mode_wanted == 4) + hwif->OUTW(hwif->INW(tfaddr-2)|0x200, tfaddr-2); + else + hwif->OUTW(hwif->INW(tfaddr-2)&~0x200, tfaddr-2); + } + else + { + pci_write_config_word(hwif->pci_dev, addr, speedp); + pci_write_config_word(hwif->pci_dev, tfaddr, speedt); + pci_read_config_word(hwif->pci_dev, tfaddr-2, &speedp); + speedp &= ~0x200; + /* Set IORDY for mode 3 or 4 */ + if(mode_wanted == 3 || mode_wanted == 4) + speedp |= 0x200; + pci_write_config_word(hwif->pci_dev, tfaddr-2, speedp); + } +} + +/** + * config_siimage_chipset_for_pio - set drive timings + * @drive: drive to tune + * @speed we want + * + * Compute the best pio mode we can for a given device. Also honour + * the timings for the driver when dealing with mixed devices. Some + * of this is ugly but its all wrapped up here + * + * The SI680 can also do VDMA - we need to start using that + * + * FIXME: we use the BIOS channel timings to avoid driving the task + * files too fast at the disk. We need to compute the master/slave + * drive PIO mode properly so that we can up the speed on a hotplug + * system. + */ + +static void config_siimage_chipset_for_pio (ide_drive_t *drive, byte set_speed) +{ + u8 channel_timings = siimage_taskfile_timing(HWIF(drive)); + u8 speed = 0, set_pio = ide_get_best_pio_mode(drive, 4, 5, NULL); + + /* WARNING PIO timing mess is going to happen b/w devices, argh */ + if ((channel_timings != set_pio) && (set_pio > channel_timings)) + set_pio = channel_timings; + + siimage_tuneproc(drive, set_pio); + speed = XFER_PIO_0 + set_pio; + if (set_speed) + (void) ide_config_drive_speed(drive, speed); +} + +static void config_chipset_for_pio (ide_drive_t *drive, byte set_speed) +{ + config_siimage_chipset_for_pio(drive, set_speed); +} + +/** + * siimage_tune_chipset - set controller timings + * @drive: Drive to set up + * @xferspeed: speed we want to achieve + * + * Tune the SII chipset for the desired mode. If we can't achieve + * the desired mode then tune for a lower one, but ultimately + * make the thing work. + */ + +static int siimage_tune_chipset (ide_drive_t *drive, byte xferspeed) +{ + u8 ultra6[] = { 0x0F, 0x0B, 0x07, 0x05, 0x03, 0x02, 0x01 }; + u8 ultra5[] = { 0x0C, 0x07, 0x05, 0x04, 0x02, 0x01 }; + u16 dma[] = { 0x2208, 0x10C2, 0x10C1 }; + + ide_hwif_t *hwif = HWIF(drive); + u16 ultra = 0, multi = 0; + u8 mode = 0, unit = drive->select.b.unit; + u8 speed = ide_rate_filter(siimage_ratemask(drive), xferspeed); + unsigned long base = (unsigned long)hwif->hwif_data; + u8 scsc = 0, addr_mask = ((hwif->channel) ? + ((hwif->mmio) ? 0xF4 : 0x84) : + ((hwif->mmio) ? 0xB4 : 0x80)); + + unsigned long ma = siimage_seldev(drive, 0x08); + unsigned long ua = siimage_seldev(drive, 0x0C); + + if (hwif->mmio) { + scsc = hwif->INB(base + 0x4A); + mode = hwif->INB(base + addr_mask); + multi = hwif->INW(ma); + ultra = hwif->INW(ua); + } else { + pci_read_config_byte(hwif->pci_dev, 0x8A, &scsc); + pci_read_config_byte(hwif->pci_dev, addr_mask, &mode); + pci_read_config_word(hwif->pci_dev, ma, &multi); + pci_read_config_word(hwif->pci_dev, ua, &ultra); + } + + mode &= ~((unit) ? 0x30 : 0x03); + ultra &= ~0x3F; + scsc = ((scsc & 0x30) == 0x00) ? 0 : 1; + + scsc = is_sata(hwif) ? 1 : scsc; + + switch(speed) { + case XFER_PIO_4: + case XFER_PIO_3: + case XFER_PIO_2: + case XFER_PIO_1: + case XFER_PIO_0: + siimage_tuneproc(drive, (speed - XFER_PIO_0)); + mode |= ((unit) ? 0x10 : 0x01); + break; + case XFER_MW_DMA_2: + case XFER_MW_DMA_1: + case XFER_MW_DMA_0: + multi = dma[speed - XFER_MW_DMA_0]; + mode |= ((unit) ? 0x20 : 0x02); + config_siimage_chipset_for_pio(drive, 0); + break; + case XFER_UDMA_6: + case XFER_UDMA_5: + case XFER_UDMA_4: + case XFER_UDMA_3: + case XFER_UDMA_2: + case XFER_UDMA_1: + case XFER_UDMA_0: + multi = dma[2]; + ultra |= ((scsc) ? (ultra6[speed - XFER_UDMA_0]) : + (ultra5[speed - XFER_UDMA_0])); + mode |= ((unit) ? 0x30 : 0x03); + config_siimage_chipset_for_pio(drive, 0); + break; + default: + return 1; + } + + if (hwif->mmio) { + hwif->OUTB(mode, base + addr_mask); + hwif->OUTW(multi, ma); + hwif->OUTW(ultra, ua); + } else { + pci_write_config_byte(hwif->pci_dev, addr_mask, mode); + pci_write_config_word(hwif->pci_dev, ma, multi); + pci_write_config_word(hwif->pci_dev, ua, ultra); + } + return (ide_config_drive_speed(drive, speed)); +} + +/** + * config_chipset_for_dma - configure for DMA + * @drive: drive to configure + * + * Called by the IDE layer when it wants the timings set up. + * For the CMD680 we also need to set up the PIO timings and + * enable DMA. + */ + +static int config_chipset_for_dma (ide_drive_t *drive) +{ + u8 speed = ide_dma_speed(drive, siimage_ratemask(drive)); + + config_chipset_for_pio(drive, !speed); + + if (!speed) + return 0; + + if (ide_set_xfer_rate(drive, speed)) + return 0; + + if (!drive->init_speed) + drive->init_speed = speed; + + return ide_dma_enable(drive); +} + +/** + * siimage_configure_drive_for_dma - set up for DMA transfers + * @drive: drive we are going to set up + * + * Set up the drive for DMA, tune the controller and drive as + * required. If the drive isn't suitable for DMA or we hit + * other problems then we will drop down to PIO and set up + * PIO appropriately + */ + +static int siimage_config_drive_for_dma (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + struct hd_driveid *id = drive->id; + + if ((id->capability & 1) != 0 && drive->autodma) { + + if (ide_use_dma(drive)) { + if (config_chipset_for_dma(drive)) + return hwif->ide_dma_on(drive); + } + + goto fast_ata_pio; + + } else if ((id->capability & 8) || (id->field_valid & 2)) { +fast_ata_pio: + config_chipset_for_pio(drive, 1); + return hwif->ide_dma_off_quietly(drive); + } + /* IORDY not supported */ + return 0; +} + +/* returns 1 if dma irq issued, 0 otherwise */ +static int siimage_io_ide_dma_test_irq (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + u8 dma_altstat = 0; + unsigned long addr = siimage_selreg(hwif, 1); + + /* return 1 if INTR asserted */ + if ((hwif->INB(hwif->dma_status) & 4) == 4) + return 1; + + /* return 1 if Device INTR asserted */ + pci_read_config_byte(hwif->pci_dev, addr, &dma_altstat); + if (dma_altstat & 8) + return 0; //return 1; + return 0; +} + +#if 0 +/** + * siimage_mmio_ide_dma_count - DMA bytes done + * @drive + * + * If we are doing VDMA the CMD680 requires a little bit + * of more careful handling and we have to read the counts + * off ourselves. For non VDMA life is normal. + */ + +static int siimage_mmio_ide_dma_count (ide_drive_t *drive) +{ +#ifdef SIIMAGE_VIRTUAL_DMAPIO + struct request *rq = HWGROUP(drive)->rq; + ide_hwif_t *hwif = HWIF(drive); + u32 count = (rq->nr_sectors * SECTOR_SIZE); + u32 rcount = 0; + unsigned long addr = siimage_selreg(hwif, 0x1C); + + hwif->OUTL(count, addr); + rcount = hwif->INL(addr); + + printk("\n%s: count = %d, rcount = %d, nr_sectors = %lu\n", + drive->name, count, rcount, rq->nr_sectors); + +#endif /* SIIMAGE_VIRTUAL_DMAPIO */ + return __ide_dma_count(drive); +} +#endif + +/** + * siimage_mmio_ide_dma_test_irq - check we caused an IRQ + * @drive: drive we are testing + * + * Check if we caused an IDE DMA interrupt. We may also have caused + * SATA status interrupts, if so we clean them up and continue. + */ + +static int siimage_mmio_ide_dma_test_irq (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + unsigned long base = (unsigned long)hwif->hwif_data; + unsigned long addr = siimage_selreg(hwif, 0x1); + + if (SATA_ERROR_REG) { + u32 ext_stat = hwif->INL(base + 0x10); + u8 watchdog = 0; + if (ext_stat & ((hwif->channel) ? 0x40 : 0x10)) { + u32 sata_error = hwif->INL(SATA_ERROR_REG); + hwif->OUTL(sata_error, SATA_ERROR_REG); + watchdog = (sata_error & 0x00680000) ? 1 : 0; +#if 1 + printk(KERN_WARNING "%s: sata_error = 0x%08x, " + "watchdog = %d, %s\n", + drive->name, sata_error, watchdog, + __FUNCTION__); +#endif + + } else { + watchdog = (ext_stat & 0x8000) ? 1 : 0; + } + ext_stat >>= 16; + + if (!(ext_stat & 0x0404) && !watchdog) + return 0; + } + + /* return 1 if INTR asserted */ + if ((hwif->INB(hwif->dma_status) & 0x04) == 0x04) + return 1; + + /* return 1 if Device INTR asserted */ + if ((hwif->INB(addr) & 8) == 8) + return 0; //return 1; + + return 0; +} + +/** + * siimage_busproc - bus isolation ioctl + * @drive: drive to isolate/restore + * @state: bus state to set + * + * Used by the SII3112 to handle bus isolation. As this is a + * SATA controller the work required is quite limited, we + * just have to clean up the statistics + */ + +static int siimage_busproc (ide_drive_t * drive, int state) +{ + ide_hwif_t *hwif = HWIF(drive); + u32 stat_config = 0; + unsigned long addr = siimage_selreg(hwif, 0); + + if (hwif->mmio) { + stat_config = hwif->INL(addr); + } else + pci_read_config_dword(hwif->pci_dev, addr, &stat_config); + + switch (state) { + case BUSSTATE_ON: + hwif->drives[0].failures = 0; + hwif->drives[1].failures = 0; + break; + case BUSSTATE_OFF: + hwif->drives[0].failures = hwif->drives[0].max_failures + 1; + hwif->drives[1].failures = hwif->drives[1].max_failures + 1; + break; + case BUSSTATE_TRISTATE: + hwif->drives[0].failures = hwif->drives[0].max_failures + 1; + hwif->drives[1].failures = hwif->drives[1].max_failures + 1; + break; + default: + return -EINVAL; + } + hwif->bus_state = state; + return 0; +} + +/** + * siimage_reset_poll - wait for sata reset + * @drive: drive we are resetting + * + * Poll the SATA phy and see whether it has come back from the dead + * yet. + */ + +static int siimage_reset_poll (ide_drive_t *drive) +{ + if (SATA_STATUS_REG) { + ide_hwif_t *hwif = HWIF(drive); + + if ((hwif->INL(SATA_STATUS_REG) & 0x03) != 0x03) { + printk(KERN_WARNING "%s: reset phy dead, status=0x%08x\n", + hwif->name, hwif->INL(SATA_STATUS_REG)); + HWGROUP(drive)->polling = 0; + return ide_started; + } + return 0; + } else { + return 0; + } +} + +/** + * siimage_pre_reset - reset hook + * @drive: IDE device being reset + * + * For the SATA devices we need to handle recalibration/geometry + * differently + */ + +static void siimage_pre_reset (ide_drive_t *drive) +{ + if (drive->media != ide_disk) + return; + + if (is_sata(HWIF(drive))) + { + drive->special.b.set_geometry = 0; + drive->special.b.recalibrate = 0; + } +} + +/** + * siimage_reset - reset a device on an siimage controller + * @drive: drive to reset + * + * Perform a controller level reset fo the device. For + * SATA we must also check the PHY. + */ + +static void siimage_reset (ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + u8 reset = 0; + unsigned long addr = siimage_selreg(hwif, 0); + + if (hwif->mmio) { + reset = hwif->INB(addr); + hwif->OUTB((reset|0x03), addr); + /* FIXME:posting */ + udelay(25); + hwif->OUTB(reset, addr); + (void) hwif->INB(addr); + } else { + pci_read_config_byte(hwif->pci_dev, addr, &reset); + pci_write_config_byte(hwif->pci_dev, addr, reset|0x03); + udelay(25); + pci_write_config_byte(hwif->pci_dev, addr, reset); + pci_read_config_byte(hwif->pci_dev, addr, &reset); + } + + if (SATA_STATUS_REG) { + u32 sata_stat = hwif->INL(SATA_STATUS_REG); + printk(KERN_WARNING "%s: reset phy, status=0x%08x, %s\n", + hwif->name, sata_stat, __FUNCTION__); + if (!(sata_stat)) { + printk(KERN_WARNING "%s: reset phy dead, status=0x%08x\n", + hwif->name, sata_stat); + drive->failures++; + } + } + +} + +/** + * proc_reports_siimage - add siimage controller to proc + * @dev: PCI device + * @clocking: SCSC value + * @name: controller name + * + * Report the clocking mode of the controller and add it to + * the /proc interface layer + */ + +static void proc_reports_siimage (struct pci_dev *dev, u8 clocking, const char *name) +{ + if (!pdev_is_sata(dev)) { + printk(KERN_INFO "%s: BASE CLOCK ", name); + clocking &= 0x03; + switch (clocking) { + case 0x03: printk("DISABLED!\n"); break; + case 0x02: printk("== 2X PCI\n"); break; + case 0x01: printk("== 133\n"); break; + case 0x00: printk("== 100\n"); break; + } + } +} + +/** + * setup_mmio_siimage - switch an SI controller into MMIO + * @dev: PCI device we are configuring + * @name: device name + * + * Attempt to put the device into mmio mode. There are some slight + * complications here with certain systems where the mmio bar isnt + * mapped so we have to be sure we can fall back to I/O. + */ + +static unsigned int setup_mmio_siimage (struct pci_dev *dev, const char *name) +{ + unsigned long bar5 = pci_resource_start(dev, 5); + unsigned long barsize = pci_resource_len(dev, 5); + u8 tmpbyte = 0; + void __iomem *ioaddr; + + /* + * Drop back to PIO if we can't map the mmio. Some + * systems seem to get terminally confused in the PCI + * spaces. + */ + + if(!request_mem_region(bar5, barsize, name)) + { + printk(KERN_WARNING "siimage: IDE controller MMIO ports not available.\n"); + return 0; + } + + ioaddr = ioremap(bar5, barsize); + + if (ioaddr == NULL) + { + release_mem_region(bar5, barsize); + return 0; + } + + pci_set_master(dev); + pci_set_drvdata(dev, (void *) ioaddr); + + if (pdev_is_sata(dev)) { + writel(0, ioaddr + 0x148); + writel(0, ioaddr + 0x1C8); + } + + writeb(0, ioaddr + 0xB4); + writeb(0, ioaddr + 0xF4); + tmpbyte = readb(ioaddr + 0x4A); + + switch(tmpbyte & 0x30) { + case 0x00: + /* In 100 MHz clocking, try and switch to 133 */ + writeb(tmpbyte|0x10, ioaddr + 0x4A); + break; + case 0x10: + /* On 133Mhz clocking */ + break; + case 0x20: + /* On PCIx2 clocking */ + break; + case 0x30: + /* Clocking is disabled */ + /* 133 clock attempt to force it on */ + writeb(tmpbyte & ~0x20, ioaddr + 0x4A); + break; + } + + writeb( 0x72, ioaddr + 0xA1); + writew( 0x328A, ioaddr + 0xA2); + writel(0x62DD62DD, ioaddr + 0xA4); + writel(0x43924392, ioaddr + 0xA8); + writel(0x40094009, ioaddr + 0xAC); + writeb( 0x72, ioaddr + 0xE1); + writew( 0x328A, ioaddr + 0xE2); + writel(0x62DD62DD, ioaddr + 0xE4); + writel(0x43924392, ioaddr + 0xE8); + writel(0x40094009, ioaddr + 0xEC); + + if (pdev_is_sata(dev)) { + writel(0xFFFF0000, ioaddr + 0x108); + writel(0xFFFF0000, ioaddr + 0x188); + writel(0x00680000, ioaddr + 0x148); + writel(0x00680000, ioaddr + 0x1C8); + } + + tmpbyte = readb(ioaddr + 0x4A); + + proc_reports_siimage(dev, (tmpbyte>>4), name); + return 1; +} + +/** + * init_chipset_siimage - set up an SI device + * @dev: PCI device + * @name: device name + * + * Perform the initial PCI set up for this device. Attempt to switch + * to 133MHz clocking if the system isn't already set up to do it. + */ + +static unsigned int __devinit init_chipset_siimage(struct pci_dev *dev, const char *name) +{ + u32 class_rev = 0; + u8 tmpbyte = 0; + u8 BA5_EN = 0; + + pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); + class_rev &= 0xff; + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (class_rev) ? 1 : 255); + + pci_read_config_byte(dev, 0x8A, &BA5_EN); + if ((BA5_EN & 0x01) || (pci_resource_start(dev, 5))) { + if (setup_mmio_siimage(dev, name)) { + return 0; + } + } + + pci_write_config_byte(dev, 0x80, 0x00); + pci_write_config_byte(dev, 0x84, 0x00); + pci_read_config_byte(dev, 0x8A, &tmpbyte); + switch(tmpbyte & 0x30) { + case 0x00: + /* 133 clock attempt to force it on */ + pci_write_config_byte(dev, 0x8A, tmpbyte|0x10); + case 0x30: + /* if clocking is disabled */ + /* 133 clock attempt to force it on */ + pci_write_config_byte(dev, 0x8A, tmpbyte & ~0x20); + case 0x10: + /* 133 already */ + break; + case 0x20: + /* BIOS set PCI x2 clocking */ + break; + } + + pci_read_config_byte(dev, 0x8A, &tmpbyte); + + pci_write_config_byte(dev, 0xA1, 0x72); + pci_write_config_word(dev, 0xA2, 0x328A); + pci_write_config_dword(dev, 0xA4, 0x62DD62DD); + pci_write_config_dword(dev, 0xA8, 0x43924392); + pci_write_config_dword(dev, 0xAC, 0x40094009); + pci_write_config_byte(dev, 0xB1, 0x72); + pci_write_config_word(dev, 0xB2, 0x328A); + pci_write_config_dword(dev, 0xB4, 0x62DD62DD); + pci_write_config_dword(dev, 0xB8, 0x43924392); + pci_write_config_dword(dev, 0xBC, 0x40094009); + + proc_reports_siimage(dev, (tmpbyte>>4), name); + return 0; +} + +/** + * init_mmio_iops_siimage - set up the iops for MMIO + * @hwif: interface to set up + * + * The basic setup here is fairly simple, we can use standard MMIO + * operations. However we do have to set the taskfile register offsets + * by hand as there isnt a standard defined layout for them this + * time. + * + * The hardware supports buffered taskfiles and also some rather nice + * extended PRD tables. Unfortunately right now we don't. + */ + +static void __devinit init_mmio_iops_siimage(ide_hwif_t *hwif) +{ + struct pci_dev *dev = hwif->pci_dev; + void *addr = pci_get_drvdata(dev); + u8 ch = hwif->channel; + hw_regs_t hw; + unsigned long base; + + /* + * Fill in the basic HWIF bits + */ + + default_hwif_mmiops(hwif); + hwif->hwif_data = addr; + + /* + * Now set up the hw. We have to do this ourselves as + * the MMIO layout isnt the same as the the standard port + * based I/O + */ + + memset(&hw, 0, sizeof(hw_regs_t)); + + base = (unsigned long)addr; + if (ch) + base += 0xC0; + else + base += 0x80; + + /* + * The buffered task file doesn't have status/control + * so we can't currently use it sanely since we want to + * use LBA48 mode. + */ +// base += 0x10; +// hwif->no_lba48 = 1; + + hw.io_ports[IDE_DATA_OFFSET] = base; + hw.io_ports[IDE_ERROR_OFFSET] = base + 1; + hw.io_ports[IDE_NSECTOR_OFFSET] = base + 2; + hw.io_ports[IDE_SECTOR_OFFSET] = base + 3; + hw.io_ports[IDE_LCYL_OFFSET] = base + 4; + hw.io_ports[IDE_HCYL_OFFSET] = base + 5; + hw.io_ports[IDE_SELECT_OFFSET] = base + 6; + hw.io_ports[IDE_STATUS_OFFSET] = base + 7; + hw.io_ports[IDE_CONTROL_OFFSET] = base + 10; + + hw.io_ports[IDE_IRQ_OFFSET] = 0; + + if (pdev_is_sata(dev)) { + base = (unsigned long)addr; + if (ch) + base += 0x80; + hwif->sata_scr[SATA_STATUS_OFFSET] = base + 0x104; + hwif->sata_scr[SATA_ERROR_OFFSET] = base + 0x108; + hwif->sata_scr[SATA_CONTROL_OFFSET] = base + 0x100; + hwif->sata_misc[SATA_MISC_OFFSET] = base + 0x140; + hwif->sata_misc[SATA_PHY_OFFSET] = base + 0x144; + hwif->sata_misc[SATA_IEN_OFFSET] = base + 0x148; + } + + hw.irq = hwif->pci_dev->irq; + + memcpy(&hwif->hw, &hw, sizeof(hw)); + memcpy(hwif->io_ports, hwif->hw.io_ports, sizeof(hwif->hw.io_ports)); + + hwif->irq = hw.irq; + + base = (unsigned long) addr; + +#ifdef SIIMAGE_LARGE_DMA +/* Watch the brackets - even Ken and Dennis get some language design wrong */ + hwif->dma_base = base + (ch ? 0x18 : 0x10); + hwif->dma_base2 = base + (ch ? 0x08 : 0x00); + hwif->dma_prdtable = hwif->dma_base2 + 4; +#else /* ! SIIMAGE_LARGE_DMA */ + hwif->dma_base = base + (ch ? 0x08 : 0x00); + hwif->dma_base2 = base + (ch ? 0x18 : 0x10); +#endif /* SIIMAGE_LARGE_DMA */ + hwif->mmio = 2; +} + +static int is_dev_seagate_sata(ide_drive_t *drive) +{ + const char *s = &drive->id->model[0]; + unsigned len; + + if (!drive->present) + return 0; + + len = strnlen(s, sizeof(drive->id->model)); + + if ((len > 4) && (!memcmp(s, "ST", 2))) { + if ((!memcmp(s + len - 2, "AS", 2)) || + (!memcmp(s + len - 3, "ASL", 3))) { + printk(KERN_INFO "%s: applying pessimistic Seagate " + "errata fix\n", drive->name); + return 1; + } + } + return 0; +} + +/** + * siimage_fixup - post probe fixups + * @hwif: interface to fix up + * + * Called after drive probe we use this to decide whether the + * Seagate fixup must be applied. This used to be in init_iops but + * that can occur before we know what drives are present. + */ + +static void __devinit siimage_fixup(ide_hwif_t *hwif) +{ + /* Try and raise the rqsize */ + if (!is_sata(hwif) || !is_dev_seagate_sata(&hwif->drives[0])) + hwif->rqsize = 128; +} + +/** + * init_iops_siimage - set up iops + * @hwif: interface to set up + * + * Do the basic setup for the SIIMAGE hardware interface + * and then do the MMIO setup if we can. This is the first + * look in we get for setting up the hwif so that we + * can get the iops right before using them. + */ + +static void __devinit init_iops_siimage(ide_hwif_t *hwif) +{ + struct pci_dev *dev = hwif->pci_dev; + u32 class_rev = 0; + + pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); + class_rev &= 0xff; + + hwif->hwif_data = NULL; + + /* Pessimal until we finish probing */ + hwif->rqsize = 15; + + if (pci_get_drvdata(dev) == NULL) + return; + init_mmio_iops_siimage(hwif); +} + +/** + * ata66_siimage - check for 80 pin cable + * @hwif: interface to check + * + * Check for the presence of an ATA66 capable cable on the + * interface. + */ + +static unsigned int __devinit ata66_siimage(ide_hwif_t *hwif) +{ + unsigned long addr = siimage_selreg(hwif, 0); + if (pci_get_drvdata(hwif->pci_dev) == NULL) { + u8 ata66 = 0; + pci_read_config_byte(hwif->pci_dev, addr, &ata66); + return (ata66 & 0x01) ? 1 : 0; + } + + return (hwif->INB(addr) & 0x01) ? 1 : 0; +} + +/** + * init_hwif_siimage - set up hwif structs + * @hwif: interface to set up + * + * We do the basic set up of the interface structure. The SIIMAGE + * requires several custom handlers so we override the default + * ide DMA handlers appropriately + */ + +static void __devinit init_hwif_siimage(ide_hwif_t *hwif) +{ + hwif->autodma = 0; + + hwif->resetproc = &siimage_reset; + hwif->speedproc = &siimage_tune_chipset; + hwif->tuneproc = &siimage_tuneproc; + hwif->reset_poll = &siimage_reset_poll; + hwif->pre_reset = &siimage_pre_reset; + + if(is_sata(hwif)) + hwif->busproc = &siimage_busproc; + + if (!hwif->dma_base) { + hwif->drives[0].autotune = 1; + hwif->drives[1].autotune = 1; + return; + } + + hwif->ultra_mask = 0x7f; + hwif->mwdma_mask = 0x07; + hwif->swdma_mask = 0x07; + + if (!is_sata(hwif)) + hwif->atapi_dma = 1; + + hwif->ide_dma_check = &siimage_config_drive_for_dma; + if (!(hwif->udma_four)) + hwif->udma_four = ata66_siimage(hwif); + + if (hwif->mmio) { + hwif->ide_dma_test_irq = &siimage_mmio_ide_dma_test_irq; + } else { + hwif->ide_dma_test_irq = & siimage_io_ide_dma_test_irq; + } + + /* + * The BIOS often doesn't set up DMA on this controller + * so we always do it. + */ + + hwif->autodma = 1; + hwif->drives[0].autodma = hwif->autodma; + hwif->drives[1].autodma = hwif->autodma; +} + +#define DECLARE_SII_DEV(name_str) \ + { \ + .name = name_str, \ + .init_chipset = init_chipset_siimage, \ + .init_iops = init_iops_siimage, \ + .init_hwif = init_hwif_siimage, \ + .fixup = siimage_fixup, \ + .channels = 2, \ + .autodma = AUTODMA, \ + .bootable = ON_BOARD, \ + } + +static ide_pci_device_t siimage_chipsets[] __devinitdata = { + /* 0 */ DECLARE_SII_DEV("SiI680"), + /* 1 */ DECLARE_SII_DEV("SiI3112 Serial ATA"), + /* 2 */ DECLARE_SII_DEV("Adaptec AAR-1210SA") +}; + +/** + * siimage_init_one - pci layer discovery entry + * @dev: PCI device + * @id: ident table entry + * + * Called by the PCI code when it finds an SI680 or SI3112 controller. + * We then use the IDE PCI generic helper to do most of the work. + */ + +static int __devinit siimage_init_one(struct pci_dev *dev, const struct pci_device_id *id) +{ + return ide_setup_pci_device(dev, &siimage_chipsets[id->driver_data]); +} + +static struct pci_device_id siimage_pci_tbl[] = { + { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, +#ifdef CONFIG_BLK_DEV_IDE_SATA + { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1}, + { PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_SII_1210SA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2}, +#endif + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, siimage_pci_tbl); + +static struct pci_driver driver = { + .name = "SiI_IDE", + .id_table = siimage_pci_tbl, + .probe = siimage_init_one, +}; + +static int siimage_ide_init(void) +{ + return ide_pci_register_driver(&driver); +} + +module_init(siimage_ide_init); + +MODULE_AUTHOR("Andre Hedrick, Alan Cox"); +MODULE_DESCRIPTION("PCI driver module for SiI IDE"); +MODULE_LICENSE("GPL"); |