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authorLen Brown <len.brown@intel.com>2005-12-06 17:31:30 -0500
committerLen Brown <len.brown@intel.com>2005-12-06 17:31:30 -0500
commit3d5271f9883cba7b54762bc4fe027d4172f06db7 (patch)
treeab8a881a14478598a0c8bda0d26c62cdccfffd6d /arch/ia64/pci
parent378b2556f4e09fa6f87ff0cb5c4395ff28257d02 (diff)
parent9115a6c787596e687df03010d97fccc5e0762506 (diff)
downloadlinux-linaro-3d5271f9883cba7b54762bc4fe027d4172f06db7.tar.gz
Pull release into acpica branch
Diffstat (limited to 'arch/ia64/pci')
-rw-r--r--arch/ia64/pci/pci.c164
1 files changed, 109 insertions, 55 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 9b5de589b82..20d76fae24e 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -95,7 +95,7 @@ pci_sal_write (unsigned int seg, unsigned int bus, unsigned int devfn,
}
static struct pci_raw_ops pci_sal_ops = {
- .read = pci_sal_read,
+ .read = pci_sal_read,
.write = pci_sal_write
};
@@ -120,29 +120,6 @@ struct pci_ops pci_root_ops = {
.write = pci_write,
};
-#ifdef CONFIG_NUMA
-extern acpi_status acpi_map_iosapic(acpi_handle, u32, void *, void **);
-static void acpi_map_iosapics(void)
-{
- acpi_get_devices(NULL, acpi_map_iosapic, NULL, NULL);
-}
-#else
-static void acpi_map_iosapics(void)
-{
- return;
-}
-#endif /* CONFIG_NUMA */
-
-static int __init
-pci_acpi_init (void)
-{
- acpi_map_iosapics();
-
- return 0;
-}
-
-subsys_initcall(pci_acpi_init);
-
/* Called by ACPI when it finds a new root bus. */
static struct pci_controller * __devinit
@@ -160,35 +137,121 @@ alloc_pci_controller (int seg)
return controller;
}
-static u64 __devinit
-add_io_space (struct acpi_resource_address64 *addr)
+struct pci_root_info {
+ struct pci_controller *controller;
+ char *name;
+};
+
+static unsigned int
+new_space (u64 phys_base, int sparse)
{
- u64 offset;
- int sparse = 0;
+ u64 mmio_base;
int i;
- if (addr->address_translation_offset == 0)
- return IO_SPACE_BASE(0); /* part of legacy IO space */
-
- if (addr->attribute.io.translation_attribute == ACPI_SPARSE_TRANSLATION)
- sparse = 1;
+ if (phys_base == 0)
+ return 0; /* legacy I/O port space */
- offset = (u64) ioremap(addr->address_translation_offset, 0);
+ mmio_base = (u64) ioremap(phys_base, 0);
for (i = 0; i < num_io_spaces; i++)
- if (io_space[i].mmio_base == offset &&
+ if (io_space[i].mmio_base == mmio_base &&
io_space[i].sparse == sparse)
- return IO_SPACE_BASE(i);
+ return i;
if (num_io_spaces == MAX_IO_SPACES) {
- printk("Too many IO port spaces\n");
+ printk(KERN_ERR "PCI: Too many IO port spaces "
+ "(MAX_IO_SPACES=%lu)\n", MAX_IO_SPACES);
return ~0;
}
i = num_io_spaces++;
- io_space[i].mmio_base = offset;
+ io_space[i].mmio_base = mmio_base;
io_space[i].sparse = sparse;
- return IO_SPACE_BASE(i);
+ return i;
+}
+
+static u64 __devinit
+add_io_space (struct pci_root_info *info, struct acpi_resource_address64 *addr)
+{
+ struct resource *resource;
+ char *name;
+ u64 base, min, max, base_port;
+ unsigned int sparse = 0, space_nr, len;
+
+ resource = kzalloc(sizeof(*resource), GFP_KERNEL);
+ if (!resource) {
+ printk(KERN_ERR "PCI: No memory for %s I/O port space\n",
+ info->name);
+ goto out;
+ }
+
+ len = strlen(info->name) + 32;
+ name = kzalloc(len, GFP_KERNEL);
+ if (!name) {
+ printk(KERN_ERR "PCI: No memory for %s I/O port space name\n",
+ info->name);
+ goto free_resource;
+ }
+
+ min = addr->min_address_range;
+ max = min + addr->address_length - 1;
+ if (addr->attribute.io.translation_attribute == ACPI_SPARSE_TRANSLATION)
+ sparse = 1;
+
+ space_nr = new_space(addr->address_translation_offset, sparse);
+ if (space_nr == ~0)
+ goto free_name;
+
+ base = __pa(io_space[space_nr].mmio_base);
+ base_port = IO_SPACE_BASE(space_nr);
+ snprintf(name, len, "%s I/O Ports %08lx-%08lx", info->name,
+ base_port + min, base_port + max);
+
+ /*
+ * The SDM guarantees the legacy 0-64K space is sparse, but if the
+ * mapping is done by the processor (not the bridge), ACPI may not
+ * mark it as sparse.
+ */
+ if (space_nr == 0)
+ sparse = 1;
+
+ resource->name = name;
+ resource->flags = IORESOURCE_MEM;
+ resource->start = base + (sparse ? IO_SPACE_SPARSE_ENCODING(min) : min);
+ resource->end = base + (sparse ? IO_SPACE_SPARSE_ENCODING(max) : max);
+ insert_resource(&iomem_resource, resource);
+
+ return base_port;
+
+free_name:
+ kfree(name);
+free_resource:
+ kfree(resource);
+out:
+ return ~0;
+}
+
+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
@@ -198,20 +261,13 @@ 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;
}
-struct pci_root_info {
- struct pci_controller *controller;
- char *name;
-};
-
static __devinit acpi_status add_window(struct acpi_resource *res, void *data)
{
struct pci_root_info *info = data;
@@ -221,13 +277,11 @@ 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;
@@ -235,7 +289,7 @@ static __devinit acpi_status add_window(struct acpi_resource *res, void *data)
} else if (addr.resource_type == ACPI_IO_RANGE) {
flags = IORESOURCE_IO;
root = &ioport_resource;
- offset = add_io_space(&addr);
+ offset = add_io_space(info, &addr);
if (offset == ~0)
return AE_OK;
} else
@@ -245,7 +299,7 @@ static __devinit acpi_status add_window(struct acpi_resource *res, void *data)
window->resource.name = info->name;
window->resource.flags = flags;
window->resource.start = addr.min_address_range + offset;
- window->resource.end = addr.max_address_range + offset;
+ window->resource.end = window->resource.start + addr.address_length - 1;
window->resource.child = NULL;
window->offset = offset;
@@ -743,7 +797,7 @@ int pci_vector_resources(int last, int nr_released)
{
int count = nr_released;
- count += (IA64_LAST_DEVICE_VECTOR - last);
+ count += (IA64_LAST_DEVICE_VECTOR - last);
return count;
}