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Diffstat (limited to 'arch/ia64/pci/pci.c')
-rw-r--r--arch/ia64/pci/pci.c239
1 files changed, 165 insertions, 74 deletions
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index de1474ff0bc5..2326790b7d8b 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -134,6 +134,10 @@ struct pci_root_info {
struct acpi_device *bridge;
struct pci_controller *controller;
struct list_head resources;
+ struct resource *res;
+ resource_size_t *res_offset;
+ unsigned int res_num;
+ struct list_head io_resources;
char *name;
};
@@ -153,7 +157,7 @@ new_space (u64 phys_base, int sparse)
return i;
if (num_io_spaces == MAX_IO_SPACES) {
- printk(KERN_ERR "PCI: Too many IO port spaces "
+ pr_err("PCI: Too many IO port spaces "
"(MAX_IO_SPACES=%lu)\n", MAX_IO_SPACES);
return ~0;
}
@@ -168,25 +172,22 @@ new_space (u64 phys_base, int sparse)
static u64 add_io_space(struct pci_root_info *info,
struct acpi_resource_address64 *addr)
{
+ struct iospace_resource *iospace;
struct resource *resource;
char *name;
unsigned long 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);
+ len = strlen(info->name) + 32;
+ iospace = kzalloc(sizeof(*iospace) + len, GFP_KERNEL);
+ if (!iospace) {
+ dev_err(&info->bridge->dev,
+ "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;
- }
+ name = (char *)(iospace + 1);
min = addr->minimum;
max = min + addr->address_length - 1;
@@ -195,7 +196,7 @@ static u64 add_io_space(struct pci_root_info *info,
space_nr = new_space(addr->translation_offset, sparse);
if (space_nr == ~0)
- goto free_name;
+ goto free_resource;
base = __pa(io_space[space_nr].mmio_base);
base_port = IO_SPACE_BASE(space_nr);
@@ -210,18 +211,23 @@ static u64 add_io_space(struct pci_root_info *info,
if (space_nr == 0)
sparse = 1;
+ resource = &iospace->res;
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);
+ if (insert_resource(&iomem_resource, resource)) {
+ dev_err(&info->bridge->dev,
+ "can't allocate host bridge io space resource %pR\n",
+ resource);
+ goto free_resource;
+ }
+ list_add_tail(&iospace->list, &info->io_resources);
return base_port;
-free_name:
- kfree(name);
free_resource:
- kfree(resource);
+ kfree(iospace);
out:
return ~0;
}
@@ -265,7 +271,7 @@ static acpi_status count_window(struct acpi_resource *resource, void *data)
static acpi_status add_window(struct acpi_resource *res, void *data)
{
struct pci_root_info *info = data;
- struct pci_window *window;
+ struct resource *resource;
struct acpi_resource_address64 addr;
acpi_status status;
unsigned long flags, offset = 0;
@@ -289,55 +295,146 @@ static acpi_status add_window(struct acpi_resource *res, void *data)
} else
return AE_OK;
- window = &info->controller->window[info->controller->windows++];
- window->resource.name = info->name;
- window->resource.flags = flags;
- window->resource.start = addr.minimum + offset;
- window->resource.end = window->resource.start + addr.address_length - 1;
- window->offset = offset;
+ resource = &info->res[info->res_num];
+ resource->name = info->name;
+ resource->flags = flags;
+ resource->start = addr.minimum + offset;
+ resource->end = resource->start + addr.address_length - 1;
+ info->res_offset[info->res_num] = offset;
- if (insert_resource(root, &window->resource)) {
+ if (insert_resource(root, resource)) {
dev_err(&info->bridge->dev,
"can't allocate host bridge window %pR\n",
- &window->resource);
+ resource);
} else {
if (offset)
dev_info(&info->bridge->dev, "host bridge window %pR "
"(PCI address [%#llx-%#llx])\n",
- &window->resource,
- window->resource.start - offset,
- window->resource.end - offset);
+ resource,
+ resource->start - offset,
+ resource->end - offset);
else
dev_info(&info->bridge->dev,
- "host bridge window %pR\n",
- &window->resource);
+ "host bridge window %pR\n", resource);
}
-
/* HP's firmware has a hack to work around a Windows bug.
* Ignore these tiny memory ranges */
- if (!((window->resource.flags & IORESOURCE_MEM) &&
- (window->resource.end - window->resource.start < 16)))
- pci_add_resource_offset(&info->resources, &window->resource,
- window->offset);
+ if (!((resource->flags & IORESOURCE_MEM) &&
+ (resource->end - resource->start < 16)))
+ pci_add_resource_offset(&info->resources, resource,
+ info->res_offset[info->res_num]);
+ info->res_num++;
return AE_OK;
}
+static void free_pci_root_info_res(struct pci_root_info *info)
+{
+ struct iospace_resource *iospace, *tmp;
+
+ list_for_each_entry_safe(iospace, tmp, &info->io_resources, list)
+ kfree(iospace);
+
+ kfree(info->name);
+ kfree(info->res);
+ info->res = NULL;
+ kfree(info->res_offset);
+ info->res_offset = NULL;
+ info->res_num = 0;
+ kfree(info->controller);
+ info->controller = NULL;
+}
+
+static void __release_pci_root_info(struct pci_root_info *info)
+{
+ int i;
+ struct resource *res;
+ struct iospace_resource *iospace;
+
+ list_for_each_entry(iospace, &info->io_resources, list)
+ release_resource(&iospace->res);
+
+ for (i = 0; i < info->res_num; i++) {
+ res = &info->res[i];
+
+ if (!res->parent)
+ continue;
+
+ if (!(res->flags & (IORESOURCE_MEM | IORESOURCE_IO)))
+ continue;
+
+ release_resource(res);
+ }
+
+ free_pci_root_info_res(info);
+ kfree(info);
+}
+
+static void release_pci_root_info(struct pci_host_bridge *bridge)
+{
+ struct pci_root_info *info = bridge->release_data;
+
+ __release_pci_root_info(info);
+}
+
+static int
+probe_pci_root_info(struct pci_root_info *info, struct acpi_device *device,
+ int busnum, int domain)
+{
+ char *name;
+
+ name = kmalloc(16, GFP_KERNEL);
+ if (!name)
+ return -ENOMEM;
+
+ sprintf(name, "PCI Bus %04x:%02x", domain, busnum);
+ info->bridge = device;
+ info->name = name;
+
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
+ &info->res_num);
+ if (info->res_num) {
+ info->res =
+ kzalloc_node(sizeof(*info->res) * info->res_num,
+ GFP_KERNEL, info->controller->node);
+ if (!info->res) {
+ kfree(name);
+ return -ENOMEM;
+ }
+
+ info->res_offset =
+ kzalloc_node(sizeof(*info->res_offset) * info->res_num,
+ GFP_KERNEL, info->controller->node);
+ if (!info->res_offset) {
+ kfree(name);
+ kfree(info->res);
+ info->res = NULL;
+ return -ENOMEM;
+ }
+
+ info->res_num = 0;
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ add_window, info);
+ } else
+ kfree(name);
+
+ return 0;
+}
+
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
{
struct acpi_device *device = root->device;
int domain = root->segment;
int bus = root->secondary.start;
struct pci_controller *controller;
- unsigned int windows = 0;
- struct pci_root_info info;
+ struct pci_root_info *info = NULL;
+ int busnum = root->secondary.start;
struct pci_bus *pbus;
- char *name;
- int pxm;
+ int pxm, ret;
controller = alloc_pci_controller(domain);
if (!controller)
- goto out1;
+ return NULL;
controller->acpi_handle = device->handle;
@@ -347,29 +444,27 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
controller->node = pxm_to_node(pxm);
#endif
- INIT_LIST_HEAD(&info.resources);
- /* insert busn resource at first */
- pci_add_resource(&info.resources, &root->secondary);
- acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
- &windows);
- if (windows) {
- controller->window =
- kzalloc_node(sizeof(*controller->window) * windows,
- GFP_KERNEL, controller->node);
- if (!controller->window)
- goto out2;
-
- name = kmalloc(16, GFP_KERNEL);
- if (!name)
- goto out3;
-
- sprintf(name, "PCI Bus %04x:%02x", domain, bus);
- info.bridge = device;
- info.controller = controller;
- info.name = name;
- acpi_walk_resources(device->handle, METHOD_NAME__CRS,
- add_window, &info);
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ dev_err(&device->dev,
+ "pci_bus %04x:%02x: ignored (out of memory)\n",
+ domain, busnum);
+ kfree(controller);
+ return NULL;
}
+
+ info->controller = controller;
+ INIT_LIST_HEAD(&info->io_resources);
+ INIT_LIST_HEAD(&info->resources);
+
+ ret = probe_pci_root_info(info, device, busnum, domain);
+ if (ret) {
+ kfree(info->controller);
+ kfree(info);
+ return NULL;
+ }
+ /* insert busn resource at first */
+ pci_add_resource(&info->resources, &root->secondary);
/*
* See arch/x86/pci/acpi.c.
* The desired pci bus might already be scanned in a quirk. We
@@ -377,21 +472,17 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
* such quirk. So we just ignore the case now.
*/
pbus = pci_create_root_bus(NULL, bus, &pci_root_ops, controller,
- &info.resources);
+ &info->resources);
if (!pbus) {
- pci_free_resource_list(&info.resources);
+ pci_free_resource_list(&info->resources);
+ __release_pci_root_info(info);
return NULL;
}
+ pci_set_host_bridge_release(to_pci_host_bridge(pbus->bridge),
+ release_pci_root_info, info);
pci_scan_child_bus(pbus);
return pbus;
-
-out3:
- kfree(controller->window);
-out2:
- kfree(controller);
-out1:
- return NULL;
}
int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
@@ -691,7 +782,7 @@ static void __init set_pci_dfl_cacheline_size(void)
status = ia64_pal_cache_summary(&levels, &unique_caches);
if (status != 0) {
- printk(KERN_ERR "%s: ia64_pal_cache_summary() failed "
+ pr_err("%s: ia64_pal_cache_summary() failed "
"(status=%ld)\n", __func__, status);
return;
}
@@ -699,7 +790,7 @@ static void __init set_pci_dfl_cacheline_size(void)
status = ia64_pal_cache_config_info(levels - 1,
/* cache_type (data_or_unified)= */ 2, &cci);
if (status != 0) {
- printk(KERN_ERR "%s: ia64_pal_cache_config_info() failed "
+ pr_err("%s: ia64_pal_cache_config_info() failed "
"(status=%ld)\n", __func__, status);
return;
}