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linux-2.6/drivers/ide/pci/siimage.c

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/*
* linux/drivers/ide/pci/siimage.c Version 1.19 Nov 16 2007
*
* Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2003 Red Hat <alan@redhat.com>
* Copyright (C) 2007 MontaVista Software, Inc.
* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
* May be copied or modified under the terms of the GNU General Public License
*
* Documentation for CMD680:
* http://gkernel.sourceforge.net/specs/sii/sii-0680a-v1.31.pdf.bz2
*
* Documentation for SiI 3112:
* http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
*
* Errata and other documentation only available under NDA.
*
*
* 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 necessary
*
* The Dell DRAC4 has some interesting features including effectively hot
* unplugging/replugging the virtual CD interface when the DRAC is reset.
* This often causes drivers/ide/siimage to panic but is ok with the rather
* smarter code in libata.
*
* TODO:
* - IORDY fixes
* - VDMA support
*/
#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>
/**
* 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)
{
#ifdef CONFIG_BLK_DEV_IDE_SATA
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();
#endif
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;
}
/**
* sil_udma_filter - compute UDMA mask
* @drive: IDE device
*
* Compute the available UDMA speeds for the device on the interface.
*
* For the CMD680 this depends on the clocking mode (scsc), for the
* SI3112 SATA controller life is a bit simpler.
*/
static u8 sil_pata_udma_filter(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
unsigned long base = (unsigned long) hwif->hwif_data;
u8 mask = 0, scsc = 0;
if (hwif->mmio)
scsc = hwif->INB(base + 0x4A);
else
pci_read_config_byte(hwif->pci_dev, 0x8A, &scsc);
if ((scsc & 0x30) == 0x10) /* 133 */
mask = ATA_UDMA6;
else if ((scsc & 0x30) == 0x20) /* 2xPCI */
mask = ATA_UDMA6;
else if ((scsc & 0x30) == 0x00) /* 100 */
mask = ATA_UDMA5;
else /* Disabled ? */
BUG();
return mask;
}
static u8 sil_sata_udma_filter(ide_drive_t *drive)
{
return strstr(drive->id->model, "Maxtor") ? ATA_UDMA5 : ATA_UDMA6;
}
/**
* sil_set_pio_mode - set host controller for PIO mode
* @drive: drive
* @pio: PIO mode number
*
* 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 sil_set_pio_mode(ide_drive_t *drive, u8 pio)
{
const u16 tf_speed[] = { 0x328a, 0x2283, 0x1281, 0x10c3, 0x10c1 };
const u16 data_speed[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
ide_hwif_t *hwif = HWIF(drive);
ide_drive_t *pair = ide_get_paired_drive(drive);
u32 speedt = 0;
u16 speedp = 0;
unsigned long addr = siimage_seldev(drive, 0x04);
unsigned long tfaddr = siimage_selreg(hwif, 0x02);
unsigned long base = (unsigned long)hwif->hwif_data;
u8 tf_pio = pio;
u8 addr_mask = hwif->channel ? (hwif->mmio ? 0xF4 : 0x84)
: (hwif->mmio ? 0xB4 : 0x80);
u8 mode = 0;
u8 unit = drive->select.b.unit;
/* trim *taskfile* PIO to the slowest of the master/slave */
if (pair->present) {
u8 pair_pio = ide_get_best_pio_mode(pair, 255, 4);
if (pair_pio < tf_pio)
tf_pio = pair_pio;
}
/* cheat for now and use the docs */
speedp = data_speed[pio];
speedt = tf_speed[tf_pio];
if (hwif->mmio) {
hwif->OUTW(speedp, addr);
hwif->OUTW(speedt, tfaddr);
/* Now set up IORDY */
if (pio > 2)
hwif->OUTW(hwif->INW(tfaddr-2)|0x200, tfaddr-2);
else
hwif->OUTW(hwif->INW(tfaddr-2)&~0x200, tfaddr-2);
mode = hwif->INB(base + addr_mask);
mode &= ~(unit ? 0x30 : 0x03);
mode |= (unit ? 0x10 : 0x01);
hwif->OUTB(mode, base + addr_mask);
} 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 (pio > 2)
speedp |= 0x200;
pci_write_config_word(hwif->pci_dev, tfaddr-2, speedp);
pci_read_config_byte(hwif->pci_dev, addr_mask, &mode);
mode &= ~(unit ? 0x30 : 0x03);
mode |= (unit ? 0x10 : 0x01);
pci_write_config_byte(hwif->pci_dev, addr_mask, mode);
}
}
/**
* sil_set_dma_mode - set host controller for DMA mode
* @drive: drive
* @speed: DMA mode
*
* Tune the SiI chipset for the desired DMA mode.
*/
static void sil_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
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;
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_MW_DMA_2:
case XFER_MW_DMA_1:
case XFER_MW_DMA_0:
multi = dma[speed - XFER_MW_DMA_0];
mode |= ((unit) ? 0x20 : 0x02);
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);
break;
default:
return;
}
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);
}
}
/* 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;
}
/**
* 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 addr = siimage_selreg(hwif, 0x1);
if (SATA_ERROR_REG) {
unsigned long base = (unsigned long)hwif->hwif_data;
u32 ext_stat = readl((void __iomem *)(base + 0x10));
u8 watchdog = 0;
if (ext_stat & ((hwif->channel) ? 0x40 : 0x10)) {
u32 sata_error = readl((void __iomem *)SATA_ERROR_REG);
writel(sata_error, (void __iomem *)SATA_ERROR_REG);
watchdog = (sata_error & 0x00680000) ? 1 : 0;
printk(KERN_WARNING "%s: sata_error = 0x%08x, "
"watchdog = %d, %s\n",
drive->name, sata_error, watchdog,
__FUNCTION__);
} else {
watchdog = (ext_stat & 0x8000) ? 1 : 0;
}
ext_stat >>= 16;
if (!(ext_stat & 0x0404) && !watchdog)
return 0;
}
/* return 1 if INTR asserted */
if ((readb((void __iomem *)hwif->dma_status) & 0x04) == 0x04)
return 1;
/* return 1 if Device INTR asserted */
if ((readb((void __iomem *)addr) & 8) == 8)
return 0; //return 1;
return 0;
}
/**
* sil_sata_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 sil_sata_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 = readl((void __iomem *)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;
}
/**
* sil_sata_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 sil_sata_reset_poll(ide_drive_t *drive)
{
if (SATA_STATUS_REG) {
ide_hwif_t *hwif = HWIF(drive);
/* SATA_STATUS_REG is valid only when in MMIO mode */
if ((readl((void __iomem *)SATA_STATUS_REG) & 0x03) != 0x03) {
printk(KERN_WARNING "%s: reset phy dead, status=0x%08x\n",
hwif->name, readl((void __iomem *)SATA_STATUS_REG));
HWGROUP(drive)->polling = 0;
return ide_started;
}
}
return 0;
}
/**
* sil_sata_pre_reset - reset hook
* @drive: IDE device being reset
*
* For the SATA devices we need to handle recalibration/geometry
* differently
*/
static void sil_sata_pre_reset(ide_drive_t *drive)
{
if (drive->media == ide_disk) {
drive->special.b.set_geometry = 0;
drive->special.b.recalibrate = 0;
}
}
/**
* 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;
u32 tmp, irq_mask;
/*
* 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)) {
/* make sure IDE0/1 interrupts are not masked */
irq_mask = (1 << 22) | (1 << 23);
tmp = readl(ioaddr + 0x48);
if (tmp & irq_mask) {
tmp &= ~irq_mask;
writel(tmp, ioaddr + 0x48);
readl(ioaddr + 0x48); /* flush */
}
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)
{
u8 rev = dev->revision, tmpbyte = 0, BA5_EN = 0;
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 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. For better SI3112 support use the libata driver
*/
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 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.
*/
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;
}
memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
hwif->irq = dev->irq;
hwif->dma_base = (unsigned long)addr + (ch ? 0x08 : 0x00);
hwif->mmio = 1;
}
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)
{
hwif->hwif_data = NULL;
/* Pessimal until we finish probing */
hwif->rqsize = 15;
if (pci_get_drvdata(hwif->pci_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 u8 __devinit ata66_siimage(ide_hwif_t *hwif)
{
unsigned long addr = siimage_selreg(hwif, 0);
u8 ata66 = 0;
if (pci_get_drvdata(hwif->pci_dev) == NULL)
pci_read_config_byte(hwif->pci_dev, addr, &ata66);
else
ata66 = hwif->INB(addr);
return (ata66 & 0x01) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}
/**
* 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)
{
u8 sata = is_sata(hwif);
hwif->set_pio_mode = &sil_set_pio_mode;
hwif->set_dma_mode = &sil_set_dma_mode;
if (sata) {
static int first = 1;
hwif->busproc = &sil_sata_busproc;
hwif->reset_poll = &sil_sata_reset_poll;
hwif->pre_reset = &sil_sata_pre_reset;
hwif->udma_filter = &sil_sata_udma_filter;
if (first) {
printk(KERN_INFO "siimage: For full SATA support you should use the libata sata_sil module.\n");
first = 0;
}
} else
hwif->udma_filter = &sil_pata_udma_filter;
if (hwif->dma_base == 0)
return;
if (sata)
hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
if (hwif->cbl != ATA_CBL_PATA40_SHORT)
hwif->cbl = 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;
}
}
#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, \
.host_flags = IDE_HFLAG_BOOTABLE, \
.pio_mask = ATA_PIO4, \
.mwdma_mask = ATA_MWDMA2, \
.udma_mask = ATA_UDMA6, \
}
static const struct ide_port_info 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 const struct pci_device_id siimage_pci_tbl[] = {
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_SII_680), 0 },
#ifdef CONFIG_BLK_DEV_IDE_SATA
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_SII_3112), 1 },
{ PCI_VDEVICE(CMD, PCI_DEVICE_ID_SII_1210SA), 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 __init 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");
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