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[PATCH] sl82c105: straighten up IDE control/status register caching 

Straighten up the IDE control/status register caching -- you *really* can't
cache the shared register per-channel and hope that it won't get out ouf
sync.

Set the PIO fallback mode to PIO0 for the slave drive as well as master --
there was no point in having them different (most probably a resutl of
typo).

Do a bit of reformat and cleanup while at it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Sergei Shtylyov 2006-12-08 02:40:01 -08:00 committed by Linus Torvalds
parent b10a068666
commit dd607d23ff
1 changed files with 13 additions and 18 deletions
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31
drivers/ide/pci/sl82c105.c
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@ -299,14 +299,14 @@ static void sl82c105_selectproc(ide_drive_t *drive)
//DBG(("sl82c105_selectproc(drive:%s)\n", drive->name));
mask = hwif->channel ? CTRL_P1F16 : CTRL_P0F16;
old = val = *((u32 *)&hwif->hwif_data);
old = val = (u32)pci_get_drvdata(dev);
if (drive->using_dma)
val &= ~mask;
else
val |= mask;
if (old != val) {
pci_write_config_dword(dev, 0x40, val);
*((u32 *)&hwif->hwif_data) = val;
pci_set_drvdata(dev, (void *)val);
}
}
@ -316,14 +316,13 @@ static void sl82c105_selectproc(ide_drive_t *drive)
*/
static void sl82c105_resetproc(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
struct pci_dev *dev = HWIF(drive)->pci_dev;
u32 val;
DBG(("sl82c105_resetproc(drive:%s)\n", drive->name));
pci_read_config_dword(dev, 0x40, &val);
*((u32 *)&hwif->hwif_data) = val;
pci_set_drvdata(dev, (void *)val);
}
/*
@ -394,6 +393,7 @@ static unsigned int __devinit init_chipset_sl82c105(struct pci_dev *dev, const c
pci_read_config_dword(dev, 0x40, &val);
val |= CTRL_P0EN | CTRL_P0F16 | CTRL_P1F16;
pci_write_config_dword(dev, 0x40, val);
pci_set_drvdata(dev, (void *)val);
return dev->irq;
}
@ -404,30 +404,25 @@ static unsigned int __devinit init_chipset_sl82c105(struct pci_dev *dev, const c
static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
{
struct pci_dev *dev = hwif->pci_dev;
unsigned int rev;
u8 dma_state;
u32 val;
DBG(("init_hwif_sl82c105(hwif: ide%d)\n", hwif->index));
hwif->tuneproc = tune_sl82c105;
hwif->selectproc = sl82c105_selectproc;
hwif->resetproc = sl82c105_resetproc;
/* Default to PIO 0 for fallback unless tuned otherwise,
* we always autotune PIO, this is done before DMA is
* checked, so there is no risk of accidentally disabling
* DMA
*/
/*
* Default to PIO 0 for fallback unless tuned otherwise.
* We always autotune PIO, this is done before DMA is checked,
* so there's no risk of accidentally disabling DMA
*/
hwif->drives[0].pio_speed = XFER_PIO_0;
hwif->drives[0].autotune = 1;
hwif->drives[1].pio_speed = XFER_PIO_1;
hwif->drives[1].pio_speed = XFER_PIO_0;
hwif->drives[1].autotune = 1;
pci_read_config_dword(dev, 0x40, &val);
*((u32 *)&hwif->hwif_data) = val;
hwif->atapi_dma = 0;
hwif->mwdma_mask = 0;
hwif->swdma_mask = 0;