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-rw-r--r--arch/powerpc/include/asm/pci-bridge.h1
-rw-r--r--arch/powerpc/kernel/pci-common.c58
-rw-r--r--arch/powerpc/kernel/pci_32.c78
-rw-r--r--arch/powerpc/kernel/pci_64.c19
4 files changed, 96 insertions, 60 deletions
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index 9047af7baa69..2dfa8a3d8c76 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -290,6 +290,7 @@ extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
/* Allocate & free a PCI host bridge structure */
extern struct pci_controller *pcibios_alloc_controller(struct device_node *dev);
extern void pcibios_free_controller(struct pci_controller *phb);
+extern void pcibios_setup_phb_resources(struct pci_controller *hose);
#ifdef CONFIG_PCI
extern unsigned long pci_address_to_pio(phys_addr_t address);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 09ac98e2a502..6d46bfabdbe4 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1421,3 +1421,61 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask);
}
+
+void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
+{
+ struct pci_bus *bus = hose->bus;
+ struct resource *res;
+ int i;
+
+ /* Hookup PHB IO resource */
+ bus->resource[0] = res = &hose->io_resource;
+
+ if (!res->flags) {
+ printk(KERN_WARNING "PCI: I/O resource not set for host"
+ " bridge %s (domain %d)\n",
+ hose->dn->full_name, hose->global_number);
+#ifdef CONFIG_PPC32
+ /* Workaround for lack of IO resource only on 32-bit */
+ res->start = (unsigned long)hose->io_base_virt - isa_io_base;
+ res->end = res->start + IO_SPACE_LIMIT;
+ res->flags = IORESOURCE_IO;
+#endif /* CONFIG_PPC32 */
+ }
+
+ pr_debug("PCI: PHB IO resource = %016llx-%016llx [%lx]\n",
+ (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned long)res->flags);
+
+ /* Hookup PHB Memory resources */
+ for (i = 0; i < 3; ++i) {
+ res = &hose->mem_resources[i];
+ if (!res->flags) {
+ if (i > 0)
+ continue;
+ printk(KERN_ERR "PCI: Memory resource 0 not set for "
+ "host bridge %s (domain %d)\n",
+ hose->dn->full_name, hose->global_number);
+#ifdef CONFIG_PPC32
+ /* Workaround for lack of MEM resource only on 32-bit */
+ res->start = hose->pci_mem_offset;
+ res->end = (resource_size_t)-1LL;
+ res->flags = IORESOURCE_MEM;
+#endif /* CONFIG_PPC32 */
+ }
+ bus->resource[i+1] = res;
+
+ pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n", i,
+ (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned long)res->flags);
+ }
+
+ pr_debug("PCI: PHB MEM offset = %016llx\n",
+ (unsigned long long)hose->pci_mem_offset);
+ pr_debug("PCI: PHB IO offset = %08lx\n",
+ (unsigned long)hose->io_base_virt - _IO_BASE);
+
+}
+
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index fdcc898e58db..883040358273 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -373,10 +373,41 @@ void pcibios_make_OF_bus_map(void)
}
#endif /* CONFIG_PPC_OF */
+static void __devinit pcibios_scan_phb(struct pci_controller *hose)
+{
+ struct pci_bus *bus;
+ struct device_node *node = hose->dn;
+ unsigned long io_offset;
+ struct resource *res = &hose->io_resource;
+
+ pr_debug("PCI: Scanning PHB %s\n",
+ node ? node->full_name : "<NO NAME>");
+
+ /* Create an empty bus for the toplevel */
+ bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
+ if (bus == NULL) {
+ printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
+ hose->global_number);
+ return;
+ }
+ bus->secondary = hose->first_busno;
+ hose->bus = bus;
+
+ /* Fixup IO space offset */
+ io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
+ res->start = (res->start + io_offset) & 0xffffffffu;
+ res->end = (res->end + io_offset) & 0xffffffffu;
+
+ /* Wire up PHB bus resources */
+ pcibios_setup_phb_resources(hose);
+
+ /* Scan children */
+ hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
+}
+
static int __init pcibios_init(void)
{
struct pci_controller *hose, *tmp;
- struct pci_bus *bus;
int next_busno = 0;
printk(KERN_INFO "PCI: Probing PCI hardware\n");
@@ -389,12 +420,8 @@ static int __init pcibios_init(void)
if (pci_assign_all_buses)
hose->first_busno = next_busno;
hose->last_busno = 0xff;
- bus = pci_scan_bus_parented(hose->parent, hose->first_busno,
- hose->ops, hose);
- if (bus) {
- pci_bus_add_devices(bus);
- hose->last_busno = bus->subordinate;
- }
+ pcibios_scan_phb(hose);
+ pci_bus_add_devices(hose->bus);
if (pci_assign_all_buses || next_busno <= hose->last_busno)
next_busno = hose->last_busno + pcibios_assign_bus_offset;
}
@@ -421,45 +448,8 @@ subsys_initcall(pcibios_init);
void __devinit pcibios_do_bus_setup(struct pci_bus *bus)
{
- struct pci_controller *hose = (struct pci_controller *) bus->sysdata;
- unsigned long io_offset;
- struct resource *res;
- int i;
struct pci_dev *dev;
- /* Hookup PHB resources */
- io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
- if (bus->parent == NULL) {
- /* This is a host bridge - fill in its resources */
- hose->bus = bus;
-
- bus->resource[0] = res = &hose->io_resource;
- if (!res->flags) {
- if (io_offset)
- printk(KERN_ERR "I/O resource not set for host"
- " bridge %d\n", hose->global_number);
- res->start = 0;
- res->end = IO_SPACE_LIMIT;
- res->flags = IORESOURCE_IO;
- }
- res->start = (res->start + io_offset) & 0xffffffffu;
- res->end = (res->end + io_offset) & 0xffffffffu;
-
- for (i = 0; i < 3; ++i) {
- res = &hose->mem_resources[i];
- if (!res->flags) {
- if (i > 0)
- continue;
- printk(KERN_ERR "Memory resource not set for "
- "host bridge %d\n", hose->global_number);
- res->start = hose->pci_mem_offset;
- res->end = ~0U;
- res->flags = IORESOURCE_MEM;
- }
- bus->resource[i+1] = res;
- }
- }
-
if (ppc_md.pci_dma_bus_setup)
ppc_md.pci_dma_bus_setup(bus);
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index ffada88a4484..f5fc547284bc 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -322,7 +322,7 @@ void __devinit scan_phb(struct pci_controller *hose)
{
struct pci_bus *bus;
struct device_node *node = hose->dn;
- int i, mode;
+ int mode;
pr_debug("PCI: Scanning PHB %s\n",
node ? node->full_name : "<NO NAME>");
@@ -341,20 +341,7 @@ void __devinit scan_phb(struct pci_controller *hose)
pcibios_map_io_space(bus);
/* Wire up PHB bus resources */
- pr_debug("PCI: PHB IO resource = %016lx-%016lx [%lx]\n",
- hose->io_resource.start, hose->io_resource.end,
- hose->io_resource.flags);
- bus->resource[0] = &hose->io_resource;
- for (i = 0; i < 3; ++i) {
- pr_debug("PCI: PHB MEM resource %d = %016lx-%016lx [%lx]\n", i,
- hose->mem_resources[i].start,
- hose->mem_resources[i].end,
- hose->mem_resources[i].flags);
- bus->resource[i+1] = &hose->mem_resources[i];
- }
- pr_debug("PCI: PHB MEM offset = %016lx\n", hose->pci_mem_offset);
- pr_debug("PCI: PHB IO offset = %08lx\n",
- (unsigned long)hose->io_base_virt - _IO_BASE);
+ pcibios_setup_phb_resources(hose);
/* Get probe mode and perform scan */
mode = PCI_PROBE_NORMAL;
@@ -376,7 +363,7 @@ static int __init pcibios_init(void)
printk(KERN_INFO "PCI: Probing PCI hardware\n");
- /* For now, override phys_mem_access_prot. If we need it,
+ /* For now, override phys_mem_access_prot. If we need it,g
* later, we may move that initialization to each ppc_md
*/
ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 10:51:44 +0000