diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-04-29 00:34:35 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-04-29 09:22:28 +0200 |
| commit | dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2 (patch) | |
| tree | b4ba965b7c5e1e6011697160aa5346b63afbbbf9 /drivers/pnp/pnpacpi/rsparser.c | |
| parent | PNP: make generic pnp_add_irq_resource() (diff) | |
| download | linux-dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2.tar.xz linux-dc16f5f2ede8cc2acf8ac22857a7fecf3a4296c2.zip | |
PNP: make generic pnp_add_dma_resource()
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>
Diffstat (limited to 'drivers/pnp/pnpacpi/rsparser.c')
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 42 |
1 files changed, 8 insertions, 34 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 0b67dff1e7c3..fc7cf73b7a7e 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -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: |