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PNP: make generic pnp_add_dma_resource()

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Add a pnp_add_dma_resource() that can be used by all the PNP
backends.  This consolidates a little more pnp_resource_table
knowledge into one place.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bjorn Helgaas
2008-04-28 16:34:35 -06:00
committed by Len Brown
parent dbddd0383c
commit dc16f5f2ed
6 changed files with 47 additions and 72 deletions
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42
drivers/pnp/pnpacpi/rsparser.c
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@@ -158,34 +158,6 @@ static int dma_flags(int type, int bus_master, int transfer)
return flags;
}
static void pnpacpi_parse_allocated_dmaresource(struct pnp_dev *dev,
u32 dma, int flags)
{
struct resource *res;
int i;
static unsigned char warned;
for (i = 0; i < PNP_MAX_DMA; i++) {
res = pnp_get_resource(dev, IORESOURCE_DMA, i);
if (!pnp_resource_valid(res))
break;
}
if (i < PNP_MAX_DMA) {
res->flags = IORESOURCE_DMA; // Also clears _UNSET flag
res->flags |= flags;
if (dma == -1) {
res->flags |= IORESOURCE_DISABLED;
return;
}
res->start = dma;
res->end = dma;
} else if (!warned) {
printk(KERN_WARNING "pnpacpi: exceeded the max number of DMA "
"resources: %d \n", PNP_MAX_DMA);
warned = 1;
}
}
static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev,
u64 io, u64 len, int io_decode)
{
@@ -285,7 +257,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
struct acpi_resource_memory32 *memory32;
struct acpi_resource_fixed_memory32 *fixed_memory32;
struct acpi_resource_extended_irq *extended_irq;
int i;
int i, flags;
switch (res->type) {
case ACPI_RESOURCE_TYPE_IRQ:
@@ -305,11 +277,13 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
case ACPI_RESOURCE_TYPE_DMA:
dma = &res->data.dma;
if (dma->channel_count > 0)
pnpacpi_parse_allocated_dmaresource(dev,
dma->channels[0],
dma_flags(dma->type, dma->bus_master,
dma->transfer));
if (dma->channel_count > 0) {
flags = dma_flags(dma->type, dma->bus_master,
dma->transfer);
if (dma->channels[0] == (u8) -1)
flags |= IORESOURCE_DISABLED;
pnp_add_dma_resource(dev, dma->channels[0], flags);
}
break;
case ACPI_RESOURCE_TYPE_IO: