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[PATCH] IDE: claim extra DMA ports regardless of channel

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- Claim extra DMA I/O ports regardless of what IDE channels are
  present/enabled.

- Remove extra ports handling from ide_mapped_mmio_dma() since it's not
  applicable to the custom-mapping IDE drivers.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Sergei Shtylylov
2006-10-03 01:14:13 -07:00
committed by Linus Torvalds
parent bbb3bbdb0f
commit 020e322de3
3 changed files with 34 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/ide/ide-dma.c
+22 -10
View File
@@ -798,9 +798,9 @@ static int ide_release_dma_engine(ide_hwif_t *hwif)
static int ide_release_iomio_dma(ide_hwif_t *hwif)
{
if ((hwif->dma_extra) && (hwif->channel == 0))
release_region((hwif->dma_base + 16), hwif->dma_extra);
release_region(hwif->dma_base, 8);
if (hwif->extra_ports)
release_region(hwif->extra_base, hwif->extra_ports);
if (hwif->dma_base2)
release_region(hwif->dma_base, 8);
return 1;
@@ -840,9 +840,7 @@ static int ide_mapped_mmio_dma(ide_hwif_t *hwif, unsigned long base, unsigned in
{
printk(KERN_INFO " %s: MMIO-DMA ", hwif->name);
hwif->dma_base = base;
if (hwif->cds->extra && hwif->channel == 0)
hwif->dma_extra = hwif->cds->extra;
hwif->dma_base = base;
if(hwif->mate)
hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base;
@@ -854,17 +852,29 @@ static int ide_mapped_mmio_dma(ide_hwif_t *hwif, unsigned long base, unsigned in
static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int ports)
{
printk(KERN_INFO " %s: BM-DMA at 0x%04lx-0x%04lx",
hwif->name, base, base + ports - 1);
hwif->name, base, base + ports - 1);
if (!request_region(base, ports, hwif->name)) {
printk(" -- Error, ports in use.\n");
return 1;
}
hwif->dma_base = base;
if ((hwif->cds->extra) && (hwif->channel == 0)) {
request_region(base+16, hwif->cds->extra, hwif->cds->name);
hwif->dma_extra = hwif->cds->extra;
if (hwif->cds->extra) {
hwif->extra_base = base + (hwif->channel ? 8 : 16);
if (!hwif->mate || !hwif->mate->extra_ports) {
if (!request_region(hwif->extra_base,
hwif->cds->extra, hwif->cds->name)) {
printk(" -- Error, extra ports in use.\n");
release_region(base, ports);
return 1;
}
hwif->extra_ports = hwif->cds->extra;
}
}
if(hwif->mate)
hwif->dma_master = (hwif->channel) ? hwif->mate->dma_base : base;
else
@@ -874,6 +884,8 @@ static int ide_iomio_dma(ide_hwif_t *hwif, unsigned long base, unsigned int port
{
printk(" -- Error, secondary ports in use.\n");
release_region(base, ports);
if (hwif->extra_ports)
release_region(hwif->extra_base, hwif->extra_ports);
return 1;
}
}