diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2010-03-05 20:47:52 +0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-03-15 03:08:37 +0300 |
| commit | fa35b49260b615d634bfa1f767aa315fa323c2e9 (patch) | |
| tree | bb518f40386f4118d0fab130c28209201a0f24e9 /drivers/pnp/pnpacpi | |
| parent | 9d7cca04211d4eb104eaaa424b98f650bc29c730 (diff) | |
| download | linux-fa35b49260b615d634bfa1f767aa315fa323c2e9.tar.xz | |
PNPACPI: add window support
Add support for resource windows. This is for bridge resources, i.e.,
regions where a bridge forwards transactions from the primary to the
secondary side. This does not add support for *setting* windows via
the /proc interface.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp/pnpacpi')
| -rw-r--r-- | drivers/pnp/pnpacpi/rsparser.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c index 5702b2c8691f..0d7d61da63fc 100644 --- a/drivers/pnp/pnpacpi/rsparser.c +++ b/drivers/pnp/pnpacpi/rsparser.c @@ -177,7 +177,8 @@ static int dma_flags(struct pnp_dev *dev, int type, int bus_master, } static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start, - u64 len, int io_decode) + u64 len, int io_decode, + int window) { int flags = 0; u64 end = start + len - 1; @@ -186,6 +187,8 @@ static void pnpacpi_parse_allocated_ioresource(struct pnp_dev *dev, u64 start, flags |= IORESOURCE_IO_16BIT_ADDR; if (len == 0 || end >= 0x10003) flags |= IORESOURCE_DISABLED; + if (window) + flags |= IORESOURCE_WINDOW; pnp_add_io_resource(dev, start, end, flags); } @@ -247,7 +250,7 @@ static void pnpacpi_parse_allocated_vendor(struct pnp_dev *dev, static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev, u64 start, u64 len, - int write_protect) + int write_protect, int window) { int flags = 0; u64 end = start + len - 1; @@ -256,6 +259,8 @@ static void pnpacpi_parse_allocated_memresource(struct pnp_dev *dev, flags |= IORESOURCE_DISABLED; if (write_protect == ACPI_READ_WRITE_MEMORY) flags |= IORESOURCE_MEM_WRITEABLE; + if (window) + flags |= IORESOURCE_WINDOW; pnp_add_mem_resource(dev, start, end, flags); } @@ -265,6 +270,7 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev, { struct acpi_resource_address64 addr, *p = &addr; acpi_status status; + int window; status = acpi_resource_to_address64(res, p); if (!ACPI_SUCCESS(status)) { @@ -273,37 +279,36 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev, return; } - if (p->producer_consumer == ACPI_PRODUCER) - return; + window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0; if (p->resource_type == ACPI_MEMORY_RANGE) pnpacpi_parse_allocated_memresource(dev, p->minimum, p->address_length, - p->info.mem.write_protect); + p->info.mem.write_protect, window); else if (p->resource_type == ACPI_IO_RANGE) pnpacpi_parse_allocated_ioresource(dev, p->minimum, p->address_length, p->granularity == 0xfff ? ACPI_DECODE_10 : - ACPI_DECODE_16); + ACPI_DECODE_16, window); } static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev, struct acpi_resource *res) { struct acpi_resource_extended_address64 *p = &res->data.ext_address64; + int window; - if (p->producer_consumer == ACPI_PRODUCER) - return; + window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0; if (p->resource_type == ACPI_MEMORY_RANGE) pnpacpi_parse_allocated_memresource(dev, p->minimum, p->address_length, - p->info.mem.write_protect); + p->info.mem.write_protect, window); else if (p->resource_type == ACPI_IO_RANGE) pnpacpi_parse_allocated_ioresource(dev, p->minimum, p->address_length, p->granularity == 0xfff ? ACPI_DECODE_10 : - ACPI_DECODE_16); + ACPI_DECODE_16, window); } static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, @@ -368,7 +373,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, pnpacpi_parse_allocated_ioresource(dev, io->minimum, io->address_length, - io->io_decode); + io->io_decode, 0); break; case ACPI_RESOURCE_TYPE_START_DEPENDENT: @@ -380,7 +385,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, pnpacpi_parse_allocated_ioresource(dev, fixed_io->address, fixed_io->address_length, - ACPI_DECODE_10); + ACPI_DECODE_10, 0); break; case ACPI_RESOURCE_TYPE_VENDOR: @@ -396,21 +401,21 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res, pnpacpi_parse_allocated_memresource(dev, memory24->minimum, memory24->address_length, - memory24->write_protect); + memory24->write_protect, 0); break; case ACPI_RESOURCE_TYPE_MEMORY32: memory32 = &res->data.memory32; pnpacpi_parse_allocated_memresource(dev, memory32->minimum, memory32->address_length, - memory32->write_protect); + memory32->write_protect, 0); break; case ACPI_RESOURCE_TYPE_FIXED_MEMORY32: fixed_memory32 = &res->data.fixed_memory32; pnpacpi_parse_allocated_memresource(dev, fixed_memory32->address, fixed_memory32->address_length, - fixed_memory32->write_protect); + fixed_memory32->write_protect, 0); break; case ACPI_RESOURCE_TYPE_ADDRESS16: case ACPI_RESOURCE_TYPE_ADDRESS32: |