/*
* Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2003 Red Hat
* Copyright (C) 2007-2008 MontaVista Software, Inc.
* Copyright (C) 2007-2008 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/ide.h>
#include <linux/init.h>
#include <linux/io.h>
#define DRV_NAME "siimage"
/**
* 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(to_pci_dev(hwif->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 isn't performance
* critical.
*/
static unsigned long siimage_selreg(ide_hwif_t *hwif, int r)
{
unsigned long base = (unsigned long)hwif->hwif_data;
base += 0xA0 + r;
if (hwif->host_flags & IDE_HFLAG_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 = drive->hwif;
unsigned long base = (unsigned long)hwif->hwif_data;
u8 unit = drive->dn & 1;
base += 0xA0 + r;
if (hwif->host_flags & IDE_HFLAG_MMIO)
base += hwif->channel << 6;
else
base += hwif->channel << 4;
base |= unit << unit;
return base;
}
static u8 sil_ioread8(struct pci_dev *dev, unsigned long addr)
{
struct ide_host *host = pci_get_drvdata(dev);
u8 tmp = 0;
if (host->host_priv)
tmp = readb((void __iomem *)addr);
else
pci_read_config_byte(dev, addr, &tmp);
return tmp;
}
static u16 sil_ioread16(struct pci_dev *dev, unsigned long addr)
{
struct ide_host *host = pci_get_drvdata(dev);
u16 tmp = 0;
if (host->host_priv)
tmp = readw((void __iomem *)addr);
else
pci_read_config_word(dev, addr, &tmp);
return tmp;
}
static void sil_iowrite8(struct pci_dev *dev, u8 val, unsigned long addr)
{
struct ide_host *host = pci_get_drvdata(dev);
if (host->host_priv)
writeb(val, (void __iomem *)addr);
else
pci_write_config_byte(dev, addr, val);
}
static void sil_iowrite16(struct pci_dev *dev, u16 val, unsigned long addr)
{
struct ide_host *host = pci_get_drvdata(dev);
if (host->host_priv)
writew(val, (void __iomem *)addr);
else
pci_write_config_word(dev, addr, val);
}
static void sil_iowrite32(struct pci_dev *dev, u32 val, unsigned long addr)
{
struct ide_host *host = pci_get_drvdata(dev);
if (host->host_priv)
writel(val, (void __iomem *)addr);
else
pci_write_config_dword(dev, addr, val);
}
/**
* 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;
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long base = (unsigned long)hwif->hwif_data;
u8 scsc, mask = 0;
base += (hwif->host_flags & IDE_HFLAG_MMIO) ? 0x4A : 0x8A;
scsc = sil_ioread8(dev, base);
switch (scsc & 0x30) {
case 0x10: /* 133 */
mask = ATA_UDMA6;
break;
case 0x20: /* 2xPCI */
mask = ATA_UDMA6;
break;
case 0x00: /* 100 */
mask = ATA_UDMA5;
break;
default: /* Disabled ? */
BUG();
}
return mask;
}
static u8 sil_sata_udma_filter(ide_drive_t *drive)
{
char *m = (char *)&drive->id[ATA_ID_PROD];
return strstr(m, "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)
{
static const u16 tf_speed[] = { 0x328a, 0x2283, 0x1281, 0x10c3, 0x10c1 };
static const u16 data_speed[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
ide_drive_t *pair = ide_get_pair_dev(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 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
u8 addr_mask = hwif->channel ? (mmio ? 0xF4 : 0x84)
: (mmio ? 0xB4 : 0x80);
u8 mode = 0;
u8 unit = drive->dn & 1;
/* trim *taskfile* PIO to the slowest of the master/slave */
if (pair) {
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];
sil_iowrite16(dev, speedp, addr);
sil_iowrite16(dev, speedt, tfaddr);
/* now set up IORDY */
speedp = sil_ioread16(dev, tfaddr - 2);
speedp &= ~0x200;
if (pio > 2)
speedp |= 0x200;
sil_iowrite16(dev, speedp, tfaddr - 2);
mode = sil_ioread8(dev, base + addr_mask);
mode &= ~(unit ? 0x30 : 0x03);
mode |= unit ? 0x10 : 0x01;
sil_iowrite8(dev, mode, base + addr_mask);
}
/**
* 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)
{
static const u8 ultra6[] = { 0x0F, 0x0B, 0x07, 0x05, 0x03, 0x02, 0x01 };
static const u8 ultra5[] = { 0x0C, 0x07, 0x05, 0x04, 0x02, 0x01 };
static const u16 dma[] = { 0x2208, 0x10C2, 0x10C1 };
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long base = (unsigned long)hwif->hwif_data;
u16 ultra = 0, multi = 0;
u8 mode = 0, unit = drive->dn & 1;
u8 mmio = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
u8 scsc = 0, addr_mask = hwif->channel ? (mmio ? 0xF4 : 0x84)
: (mmio ? 0xB4 : 0x80);
unsigned long ma = siimage_seldev(drive, 0x08);
unsigned long ua = siimage_seldev(drive, 0x0C);
scsc = sil_ioread8 (dev, base + (mmio ? 0x4A : 0x8A));
mode = sil_ioread8 (dev, base + addr_mask);
multi = sil_ioread16(dev, ma);
ultra = sil_ioread16(dev, ua);
mode &= ~(unit ? 0x30 : 0x03);
ultra &= ~0x3F;
scsc = ((scsc & 0x30) == 0x00) ? 0 : 1;
scsc = is_sata(hwif) ? 1 : scsc;
if (speed >= XFER_UDMA_0) {
multi = dma[2];
ultra |= scsc ? ultra6[speed - XFER_UDMA_0] :
ultra5[speed - XFER_UDMA_0];
mode |= unit ? 0x30 : 0x03;
} else {
multi = dma[speed - XFER_MW_DMA_0];
mode |= unit ? 0x20 : 0x02;
}
sil_iowrite8 (dev, mode, base + addr_mask);
sil_iowrite16(dev, multi, ma);
sil_iowrite16(dev, ultra, ua);
}
/* returns 1 if dma irq issued, 0 otherwise */
static int siimage_io_dma_test_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
struct pci_dev *dev = to_pci_dev(hwif->dev);
u8 dma_altstat = 0;
unsigned long addr = siimage_selreg(hwif, 1);
/* return 1 if INTR asserted */
if (inb(hwif->dma_base + ATA_DMA_STATUS) & 4)
return 1;
/* return 1 if Device INTR asserted */
pci_read_config_byte(dev, addr, &dma_altstat);
if (dma_altstat & 8)
return 0; /* return 1; */
return 0;
}
/**
* siimage_mmio_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_dma_test_irq(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
unsigned long addr = siimage_selreg(hwif, 0x1);
void __iomem *sata_error_addr
= (void __iomem *)hwif->sata_scr[SATA_ERROR_OFFSET];
if (sata_error_addr) {
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(sata_error_addr);
writel(sata_error, sata_error_addr);
watchdog = (sata_error & 0x00680000) ? 1 : 0;
printk(KERN_WARNING "%s: sata_error = 0x%08x, "
"watchdog = %d, %s\n",
drive->name, sata_error, watchdog, __func__);
} 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_base + ATA_DMA_STATUS)) & 4)
return 1;
/* return 1 if Device INTR asserted */
if (readb((void __iomem *)addr) & 8)
return 0; /* return 1; */
return 0;
}
static int siimage_dma_test_irq(ide_drive_t *drive)
{
if (drive->hwif->host_flags & IDE_HFLAG_MMIO)
return siimage_mmio_dma_test_irq(drive);
else
return siimage_io_dma_test_irq(drive);
}
/**
* 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)
{
ide_hwif_t *hwif = drive->hwif;
void __iomem *sata_status_addr
= (void __iomem *)hwif->sata_scr[SATA_STATUS_OFFSET];
if (sata_status_addr) {
/* SATA Status is available only when in MMIO mode */
u32 sata_stat = readl(sata_status_addr);
if ((sata_stat & 0x03) != 0x03) {
printk(KERN_WARNING "%s: reset phy dead, status=0x%08x\n",
hwif->name, sata_stat);
return -ENXIO;
}
}
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;
}
}
/**
* init_chipset_siimage - set up an SI device
* @dev: PCI device
*
* Perform the initial PCI set up for this device. Attempt to switch
* to 133 MHz clocking if the system isn't already set up to do it.
*/
static int init_chipset_siimage(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
void __iomem *ioaddr = host->host_priv;
unsigned long base, scsc_addr;
u8 rev = dev->revision, tmp;
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, rev ? 1 : 255);
if (ioaddr)
pci_set_master(dev);
base = (unsigned long)ioaddr;
if (ioaddr && pdev_is_sata(dev)) {
u32 tmp32, irq_mask;
/* make sure IDE0/1 interrupts are not masked */
irq_mask = (1 << 22) | (1 << 23);
tmp32 = readl(ioaddr + 0x48);
if (tmp32 & irq_mask) {
tmp32 &= ~irq_mask;
writel(tmp32, ioaddr + 0x48);
readl(ioaddr + 0x48); /* flush */
}
writel(0, ioaddr + 0x148);
writel(0, ioaddr + 0x1C8);
}
sil_iowrite8(dev, 0, base ? (base + 0xB4) : 0x80);
sil_iowrite8(dev, 0, base ? (base + 0xF4) : 0x84);
scsc_addr = base ? (base + 0x4A) : 0x8A;
tmp = sil_ioread8(dev, scsc_addr);
switch (tmp & 0x30) {
case 0x00:
/* On 100 MHz clocking, try and switch to 133 MHz */
sil_iowrite8(dev, tmp | 0x10, scsc_addr);
break;
case 0x30:
/* Clocking is disabled, attempt to force 133MHz clocking. */
sil_iowrite8(dev, tmp & ~0x20, scsc_addr);
case 0x10:
/* On 133Mhz clocking. */
break;
case 0x20:
/* On PCIx2 clocking. */
break;
}
tmp = sil_ioread8(dev, scsc_addr);
sil_iowrite8 (dev, 0x72, base + 0xA1);
sil_iowrite16(dev, 0x328A, base + 0xA2);
sil_iowrite32(dev, 0x62DD62DD, base + 0xA4);
sil_iowrite32(dev, 0x43924392, base + 0xA8);
sil_iowrite32(dev, 0x40094009, base + 0xAC);
sil_iowrite8 (dev, 0x72, base ? (base + 0xE1) : 0xB1);
sil_iowrite16(dev, 0x328A, base ? (base + 0xE2) : 0xB2);
sil_iowrite32(dev, 0x62DD62DD, base ? (base + 0xE4) : 0xB4);
sil_iowrite32(dev, 0x43924392, base ? (base + 0xE8) : 0xB8);
sil_iowrite32(dev, 0x40094009, base ? (base + 0xEC) : 0xBC);
if (base && pdev_is_sata(dev)) {
writel(0xFFFF0000, ioaddr + 0x108);
writel(0xFFFF0000, ioaddr + 0x188);
writel(0x00680000, ioaddr + 0x148);
writel(0x00680000, ioaddr + 0x1C8);
}
/* report the clocking mode of the controller */
if (!pdev_is_sata(dev)) {
static const char *clk_str[] =
{ "== 100", "== 133", "== 2X PCI", "DISABLED!" };
tmp >>= 4;
printk(KERN_INFO DRV_NAME " %s: BASE CLOCK %s\n",
pci_name(dev), clk_str[tmp & 3]);
}
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 isn't 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 = to_pci_dev(hwif->dev);
struct ide_host *host = pci_get_drvdata(dev);
void *addr = host->host_priv;
u8 ch = hwif->channel;
struct ide_io_ports *io_ports = &hwif->io_ports;
unsigned long base;
/*
* Fill in the basic hwif bits
*/
hwif->host_flags |= IDE_HFLAG_MMIO;
hwif->hwif_data = addr;
/*
* Now set up the hw. We have to do this ourselves as the
* MMIO layout isn't the same as the standard port based I/O.
*/
memset(io_ports, 0, sizeof(*io_ports));
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.
*/
io_ports->data_addr = base;
io_ports->error_addr = base + 1;
io_ports->nsect_addr = base + 2;
io_ports->lbal_addr = base + 3;
io_ports->lbam_addr = base + 4;
io_ports->lbah_addr = base + 5;
io_ports->device_addr = base + 6;
io_ports->status_addr = base + 7;
io_ports->ctl_addr = base + 10;
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->irq = dev->irq;
hwif->dma_base = (unsigned long)addr + (ch ? 0x08 : 0x00);
}
static int is_dev_seagate_sata(ide_drive_t *drive)
{
const char *s = (const char *)&drive->id[ATA_ID_PROD];
unsigned len = strnlen(s, ATA_ID_PROD_LEN);
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;
}
/**
* sil_quirkproc - post probe fixups
* @drive: drive
*
* 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 sil_quirkproc(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
/* Try and rise the rqsize */
if (!is_sata(hwif) || !is_dev_seagate_sata(drive))
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 = to_pci_dev(hwif->dev);
struct ide_host *host = pci_get_drvdata(dev);
hwif->hwif_data = NULL;
/* Pessimal until we finish probing */
hwif->rqsize = 15;
if (host->host_priv)
init_mmio_iops_siimage(hwif);
}
/**
* sil_cable_detect - cable detection
* @hwif: interface to check
*
* Check for the presence of an ATA66 capable cable on the interface.
*/
static u8 sil_cable_detect(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
unsigned long addr = siimage_selreg(hwif, 0);
u8 ata66 = sil_ioread8(dev, addr);
return (ata66 & 0x01) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}
static const struct ide_port_ops sil_pata_port_ops = {
.set_pio_mode = sil_set_pio_mode,
.set_dma_mode = sil_set_dma_mode,
.quirkproc = sil_quirkproc,
.udma_filter = sil_pata_udma_filter,
.cable_detect = sil_cable_detect,
};
static const struct ide_port_ops sil_sata_port_ops = {
.set_pio_mode = sil_set_pio_mode,
.set_dma_mode = sil_set_dma_mode,
.reset_poll = sil_sata_reset_poll,
.pre_reset = sil_sata_pre_reset,
.quirkproc = sil_quirkproc,
.udma_filter = sil_sata_udma_filter,
.cable_detect = sil_cable_detect,
};
static const struct ide_dma_ops sil_dma_ops = {
.dma_host_set = ide_dma_host_set,
.dma_setup = ide_dma_setup,
.dma_start = ide_dma_start,
.dma_end = ide_dma_end,
.dma_test_irq = siimage_dma_test_irq,
.dma_timer_expiry = ide_dma_sff_timer_expiry,
.dma_lost_irq = ide_dma_lost_irq,
.dma_sff_read_status = ide_dma_sff_read_status,
};
#define DECLARE_SII_DEV(p_ops) \
{ \
.name = DRV_NAME, \
.init_chipset = init_chipset_siimage, \
.init_iops = init_iops_siimage, \
.port_ops = p_ops, \
.dma_ops = &sil_dma_ops, \
.pio_mask = ATA_PIO4, \
.mwdma_mask = ATA_MWDMA2, \
.udma_mask = ATA_UDMA6, \
}
static const struct ide_port_info siimage_chipsets[] __devinitdata = {
/* 0: SiI680 */ DECLARE_SII_DEV(&sil_pata_port_ops),
/* 1: SiI3112 */ DECLARE_SII_DEV(&sil_sata_port_ops)
};
/**
* siimage_init_one - PCI layer discovery entry
* @dev: PCI device
* @id: ident table entry
*
* Called by the PCI code when it finds an SiI680 or SiI3112 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)
{
void __iomem *ioaddr = NULL;
resource_size_t bar5 = pci_resource_start(dev, 5);
unsigned long barsize = pci_resource_len(dev, 5);
int rc;
struct ide_port_info d;
u8 idx = id->driver_data;
u8 BA5_EN;
d = siimage_chipsets[idx];
if (idx) {
static int first = 1;
if (first) {
printk(KERN_INFO DRV_NAME ": For full SATA support you "
"should use the libata sata_sil module.\n");
first = 0;
}
d.host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
}
rc = pci_enable_device(dev);
if (rc)
return rc;
pci_read_config_byte(dev, 0x8A, &BA5_EN);
if ((BA5_EN & 0x01) || bar5) {
/*
* 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, d.name)) {
printk(KERN_WARNING DRV_NAME " %s: MMIO ports not "
"available\n", pci_name(dev));
} else {
ioaddr = pci_ioremap_bar(dev, 5);
if (ioaddr == NULL)
release_mem_region(bar5, barsize);
}
}
rc = ide_pci_init_one(dev, &d, ioaddr);
if (rc) {
if (ioaddr) {
iounmap(ioaddr);
release_mem_region(bar5, barsize);
}
pci_disable_device(dev);
}
return rc;
}
static void __devexit siimage_remove(struct pci_dev *dev)
{
struct ide_host *host = pci_get_drvdata(dev);
void __iomem *ioaddr = host->host_priv;
ide_pci_remove(dev);
if (ioaddr) {
resource_size_t bar5 = pci_resource_start(dev, 5);
unsigned long barsize = pci_resource_len(dev, 5);
iounmap(ioaddr);
release_mem_region(bar5, barsize);
}
pci_disable_device(dev);
}
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), 1 },
#endif
{ 0, },
};
MODULE_DEVICE_TABLE(pci, siimage_pci_tbl);
static struct pci_driver siimage_pci_driver = {
.name = "SiI_IDE",
.id_table = siimage_pci_tbl,
.probe = siimage_init_one,
.remove = __devexit_p(siimage_remove),
.suspend = ide_pci_suspend,
.resume = ide_pci_resume,
};
static int __init siimage_ide_init(void)
{
return ide_pci_register_driver(&siimage_pci_driver);
}
static void __exit siimage_ide_exit(void)
{
pci_unregister_driver(&siimage_pci_driver);
}
module_init(siimage_ide_init);
module_exit(siimage_ide_exit);
MODULE_AUTHOR("Andre Hedrick, Alan Cox");
MODULE_DESCRIPTION("PCI driver module for SiI IDE");
MODULE_LICENSE("GPL");
