aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorTony Luck <tony.luck@intel.com>2005-10-28 13:23:34 -0700
committerTony Luck <tony.luck@intel.com>2005-10-28 13:23:34 -0700
commit9472d8ce147fecb80a2f29ad8ab781e596858916 (patch)
tree9a968623af92f932f1353f0470a4bff5a0cd4460
parent3168c31abe0c11fd3edcefa110d6f590fe8c909f (diff)
parent463eb297401eeb174db3fdf37a87911b576b3993 (diff)
downloadlinux-linaro-9472d8ce147fecb80a2f29ad8ab781e596858916.tar.gz
Pull acpi-produce-consume into release branch
-rw-r--r--arch/ia64/pci/pci.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 6bf48d7842c..017cfc3f478 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -168,6 +168,29 @@ add_io_space (struct acpi_resource_address64 *addr)
return IO_SPACE_BASE(i);
}
+static acpi_status __devinit resource_to_window(struct acpi_resource *resource,
+ struct acpi_resource_address64 *addr)
+{
+ acpi_status status;
+
+ /*
+ * We're only interested in _CRS descriptors that are
+ * - address space descriptors for memory or I/O space
+ * - non-zero size
+ * - producers, i.e., the address space is routed downstream,
+ * not consumed by the bridge itself
+ */
+ status = acpi_resource_to_address64(resource, addr);
+ if (ACPI_SUCCESS(status) &&
+ (addr->resource_type == ACPI_MEMORY_RANGE ||
+ addr->resource_type == ACPI_IO_RANGE) &&
+ addr->address_length &&
+ addr->producer_consumer == ACPI_PRODUCER)
+ return AE_OK;
+
+ return AE_ERROR;
+}
+
static acpi_status __devinit
count_window (struct acpi_resource *resource, void *data)
{
@@ -175,11 +198,9 @@ count_window (struct acpi_resource *resource, void *data)
struct acpi_resource_address64 addr;
acpi_status status;
- status = acpi_resource_to_address64(resource, &addr);
+ status = resource_to_window(resource, &addr);
if (ACPI_SUCCESS(status))
- if (addr.resource_type == ACPI_MEMORY_RANGE ||
- addr.resource_type == ACPI_IO_RANGE)
- (*windows)++;
+ (*windows)++;
return AE_OK;
}
@@ -198,13 +219,11 @@ static __devinit acpi_status add_window(struct acpi_resource *res, void *data)
unsigned long flags, offset = 0;
struct resource *root;
- status = acpi_resource_to_address64(res, &addr);
+ /* Return AE_OK for non-window resources to keep scanning for more */
+ status = resource_to_window(res, &addr);
if (!ACPI_SUCCESS(status))
return AE_OK;
- if (!addr.address_length)
- return AE_OK;
-
if (addr.resource_type == ACPI_MEMORY_RANGE) {
flags = IORESOURCE_MEM;
root = &iomem_resource;