struct pci_bus * __devinit
pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
{
struct pci_root_info info;
struct pci_controller *controller;
unsigned int windows = 0;
struct pci_bus *pbus;
char *name;
int pxm;
controller = alloc_pci_controller(domain);
if (!controller)
goto out1;
controller->acpi_handle = device->handle;
pxm = acpi_get_pxm(controller->acpi_handle);
#ifdef CONFIG_NUMA
if (pxm >= 0)
controller->node = pxm_to_node(pxm);
#endif
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
&windows);
if (windows) {
controller->window =
kmalloc_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.controller = controller;
info.name = name;
acpi_walk_resources(device->handle, METHOD_NAME__CRS, add_window,
&info);
/*
* See arch/x86/pci/acpi.c.
* The desired pci bus might already be scanned in a quirk. We
* should handle the case here, but it appears that IA64 hasn't
* such quirk. So we just ignore the case now.
*/
pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
if (pbus)
pcibios_setup_root_windows(pbus, controller);
return pbus;
out3:
kfree(controller->window);
out2:
kfree(controller);
out1:
return NULL;
}
int acpi_get_node(acpi_handle *handle)
{
int pxm, node = -1;
pxm = acpi_get_pxm(handle);
if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
node = acpi_map_pxm_to_node(pxm);
return node;
}
int acpi_get_node(acpi_handle *handle)
{
int pxm, node = -1;
pxm = acpi_get_pxm(handle);
if (pxm >= 0)
node = acpi_map_pxm_to_node(pxm);
return node;
}
struct pci_bus * __devinit
pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
{
struct pci_root_info info;
struct pci_controller *controller;
unsigned int windows = 0;
struct pci_bus *pbus;
char *name;
int pxm;
controller = alloc_pci_controller(domain);
if (!controller)
goto out1;
controller->acpi_handle = device->handle;
pxm = acpi_get_pxm(controller->acpi_handle);
#ifdef CONFIG_NUMA
if (pxm >= 0)
controller->node = pxm_to_node(pxm);
#endif
acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
&windows);
controller->window = kmalloc_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.controller = controller;
info.name = name;
acpi_walk_resources(device->handle, METHOD_NAME__CRS, add_window,
&info);
pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
if (pbus)
pcibios_setup_root_windows(pbus, controller);
return pbus;
out3:
kfree(controller->window);
out2:
kfree(controller);
out1:
return NULL;
}
static acpi_status __devinit
acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
struct acpi_madt_io_sapic *iosapic;
unsigned int gsi_base;
int pxm, node;
/* Only care about objects w/ a method that returns the MADT */
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
return AE_OK;
if (!buffer.length || !buffer.pointer)
return AE_OK;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_BUFFER ||
obj->buffer.length < sizeof(*iosapic)) {
kfree(buffer.pointer);
return AE_OK;
}
iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
kfree(buffer.pointer);
return AE_OK;
}
gsi_base = iosapic->global_irq_base;
kfree(buffer.pointer);
/*
* OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
* us which node to associate this with.
*/
pxm = acpi_get_pxm(handle);
if (pxm < 0)
return AE_OK;
node = pxm_to_node(pxm);
if (node >= MAX_NUMNODES || !node_online(node) ||
cpus_empty(node_to_cpumask(node)))
return AE_OK;
/* We know a gsi to node mapping! */
map_iosapic_to_node(gsi_base, node);
return AE_OK;
}
static __cpuinit
int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
{
#ifdef CONFIG_ACPI_NUMA
int pxm_id;
int nid;
pxm_id = acpi_get_pxm(handle);
nid = acpi_map_pxm_to_node(pxm_id);
node_cpuid[cpu].phys_id = physid;
node_cpuid[cpu].nid = nid;
#endif
return (0);
}
static acpi_status __devinit
acpi_map_iosapic(acpi_handle handle, u32 depth, void *context, void **ret)
{
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *obj;
struct acpi_madt_io_sapic *iosapic;
unsigned int gsi_base;
int pxm, node;
if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
return AE_OK;
if (!buffer.length || !buffer.pointer)
return AE_OK;
obj = buffer.pointer;
if (obj->type != ACPI_TYPE_BUFFER ||
obj->buffer.length < sizeof(*iosapic)) {
kfree(buffer.pointer);
return AE_OK;
}
iosapic = (struct acpi_madt_io_sapic *)obj->buffer.pointer;
if (iosapic->header.type != ACPI_MADT_TYPE_IO_SAPIC) {
kfree(buffer.pointer);
return AE_OK;
}
gsi_base = iosapic->global_irq_base;
kfree(buffer.pointer);
pxm = acpi_get_pxm(handle);
if (pxm < 0)
return AE_OK;
node = pxm_to_node(pxm);
if (node >= MAX_NUMNODES || !node_online(node) ||
cpumask_empty(cpumask_of_node(node)))
return AE_OK;
map_iosapic_to_node(gsi_base, node);
return AE_OK;
}
static
int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
{
#ifdef CONFIG_ACPI_NUMA
int pxm_id;
pxm_id = acpi_get_pxm(handle);
/*
* Assuming that the container driver would have set the proximity
* domain and would have initialized pxm_to_node(pxm_id) && pxm_flag
*/
node_cpuid[cpu].nid = (pxm_id < 0) ? 0 : pxm_to_node(pxm_id);
node_cpuid[cpu].phys_id = physid;
#endif
return (0);
}
static
int acpi_map_cpu2node(acpi_handle handle, int cpu, long physid)
{
#ifdef CONFIG_ACPI_NUMA
int pxm_id;
int nid;
pxm_id = acpi_get_pxm(handle);
/*
* We don't have cpu-only-node hotadd. But if the system equips
* SRAT table, pxm is already found and node is ready.
* So, just pxm_to_nid(pxm) is OK.
* This code here is for the system which doesn't have full SRAT
* table for possible cpus.
*/
nid = acpi_map_pxm_to_node(pxm_id);
node_cpuid[cpu].phys_id = physid;
node_cpuid[cpu].nid = nid;
#endif
return (0);
}
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
{
struct acpi_device *device = root->device;
struct pci_root_info *info = NULL;
int domain = root->segment;
int busnum = root->secondary.start;
LIST_HEAD(resources);
struct pci_bus *bus = NULL;
struct pci_sysdata *sd;
int node;
#ifdef CONFIG_ACPI_NUMA
int pxm;
#endif
if (pci_ignore_seg)
domain = 0;
if (domain && !pci_domains_supported) {
printk(KERN_WARNING "pci_bus %04x:%02x: "
"ignored (multiple domains not supported)\n",
domain, busnum);
return NULL;
}
node = -1;
#ifdef CONFIG_ACPI_NUMA
pxm = acpi_get_pxm(device->handle);
if (pxm >= 0)
node = pxm_to_node(pxm);
if (node != -1)
set_mp_bus_to_node(busnum, node);
else
#endif
node = get_mp_bus_to_node(busnum);
if (node != -1 && !node_online(node))
node = -1;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info) {
printk(KERN_WARNING "pci_bus %04x:%02x: "
"ignored (out of memory)\n", domain, busnum);
return NULL;
}
sd = &info->sd;
sd->domain = domain;
sd->node = node;
sd->companion = device;
/*
* Maybe the desired pci bus has been already scanned. In such case
* it is unnecessary to scan the pci bus with the given domain,busnum.
*/
bus = pci_find_bus(domain, busnum);
if (bus) {
/*
* If the desired bus exits, the content of bus->sysdata will
* be replaced by sd.
*/
memcpy(bus->sysdata, sd, sizeof(*sd));
kfree(info);
} else {
probe_pci_root_info(info, device, busnum, domain);
/* insert busn res at first */
pci_add_resource(&resources, &root->secondary);
/*
* _CRS with no apertures is normal, so only fall back to
* defaults or native bridge info if we're ignoring _CRS.
*/
if (pci_use_crs)
add_resources(info, &resources);
else {
free_pci_root_info_res(info);
x86_pci_root_bus_resources(busnum, &resources);
}
if (!setup_mcfg_map(info, domain, (u8)root->secondary.start,
(u8)root->secondary.end, root->mcfg_addr))
bus = pci_create_root_bus(NULL, busnum, &pci_root_ops,
sd, &resources);
if (bus) {
pci_scan_child_bus(bus);
pci_set_host_bridge_release(
to_pci_host_bridge(bus->bridge),
release_pci_root_info, info);
} else {
pci_free_resource_list(&resources);
__release_pci_root_info(info);
}
}
/* After the PCI-E bus has been walked and all devices discovered,
* configure any settings of the fabric that might be necessary.
*/
if (bus) {
struct pci_bus *child;
list_for_each_entry(child, &bus->children, node)
pcie_bus_configure_settings(child);
}
if (bus && node != -1) {
#ifdef CONFIG_ACPI_NUMA
if (pxm >= 0)
dev_printk(KERN_DEBUG, &bus->dev,
"on NUMA node %d (pxm %d)\n", node, pxm);
#else
dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
#endif
}
return bus;
}
struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_pci_root *root)
{
struct acpi_device *device = root->device;
int domain = root->segment;
int busnum = root->secondary.start;
struct pci_bus *bus;
struct pci_sysdata *sd;
int node;
#ifdef CONFIG_ACPI_NUMA
int pxm;
#endif
if (domain && !pci_domains_supported) {
printk(KERN_WARNING "pci_bus %04x:%02x: "
"ignored (multiple domains not supported)\n",
domain, busnum);
return NULL;
}
node = -1;
#ifdef CONFIG_ACPI_NUMA
pxm = acpi_get_pxm(device->handle);
if (pxm >= 0)
node = pxm_to_node(pxm);
if (node != -1)
set_mp_bus_to_node(busnum, node);
else
#endif
node = get_mp_bus_to_node(busnum);
if (node != -1 && !node_online(node))
node = -1;
/* Allocate per-root-bus (not per bus) arch-specific data.
* TODO: leak; this memory is never freed.
* It's arguable whether it's worth the trouble to care.
*/
sd = kzalloc(sizeof(*sd), GFP_KERNEL);
if (!sd) {
printk(KERN_WARNING "pci_bus %04x:%02x: "
"ignored (out of memory)\n", domain, busnum);
return NULL;
}
sd->domain = domain;
sd->node = node;
/*
* Maybe the desired pci bus has been already scanned. In such case
* it is unnecessary to scan the pci bus with the given domain,busnum.
*/
bus = pci_find_bus(domain, busnum);
if (bus) {
/*
* If the desired bus exits, the content of bus->sysdata will
* be replaced by sd.
*/
memcpy(bus->sysdata, sd, sizeof(*sd));
kfree(sd);
} else {
bus = pci_create_bus(NULL, busnum, &pci_root_ops, sd);
if (bus) {
get_current_resources(device, busnum, domain, bus);
bus->subordinate = pci_scan_child_bus(bus);
}
}
if (!bus)
kfree(sd);
if (bus && node != -1) {
#ifdef CONFIG_ACPI_NUMA
if (pxm >= 0)
dev_printk(KERN_DEBUG, &bus->dev,
"on NUMA node %d (pxm %d)\n", node, pxm);
#else
dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
#endif
}
return bus;
}