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Diffstat (limited to 'arch/powerpc/kernel/pci_64.c')
-rw-r--r--arch/powerpc/kernel/pci_64.c143
1 files changed, 71 insertions, 72 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 3502b9101e6..586962f65c2 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -32,13 +32,6 @@
#include <asm/machdep.h>
#include <asm/ppc-pci.h>
-#ifdef DEBUG
-#include <asm/udbg.h>
-#define DBG(fmt...) printk(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
unsigned long pci_probe_only = 1;
/* pci_io_base -- the base address from which io bars are offsets.
@@ -102,7 +95,7 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
addrs = of_get_property(node, "assigned-addresses", &proplen);
if (!addrs)
return;
- DBG(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
+ pr_debug(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
for (; proplen >= 20; proplen -= 20, addrs += 5) {
flags = pci_parse_of_flags(addrs[0]);
if (!flags)
@@ -112,8 +105,9 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
if (!size)
continue;
i = addrs[0] & 0xff;
- DBG(" base: %llx, size: %llx, i: %x\n",
- (unsigned long long)base, (unsigned long long)size, i);
+ pr_debug(" base: %llx, size: %llx, i: %x\n",
+ (unsigned long long)base,
+ (unsigned long long)size, i);
if (PCI_BASE_ADDRESS_0 <= i && i <= PCI_BASE_ADDRESS_5) {
res = &dev->resource[(i - PCI_BASE_ADDRESS_0) >> 2];
@@ -144,7 +138,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
if (type == NULL)
type = "";
- DBG(" create device, devfn: %x, type: %s\n", devfn, type);
+ pr_debug(" create device, devfn: %x, type: %s\n", devfn, type);
dev->bus = bus;
dev->sysdata = node;
@@ -165,8 +159,8 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
dev->class = get_int_prop(node, "class-code", 0);
dev->revision = get_int_prop(node, "revision-id", 0);
- DBG(" class: 0x%x\n", dev->class);
- DBG(" revision: 0x%x\n", dev->revision);
+ pr_debug(" class: 0x%x\n", dev->class);
+ pr_debug(" revision: 0x%x\n", dev->revision);
dev->current_state = 4; /* unknown power state */
dev->error_state = pci_channel_io_normal;
@@ -187,7 +181,7 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
pci_parse_of_addrs(node, dev);
- DBG(" adding to system ...\n");
+ pr_debug(" adding to system ...\n");
pci_device_add(dev, bus);
@@ -195,19 +189,20 @@ struct pci_dev *of_create_pci_dev(struct device_node *node,
}
EXPORT_SYMBOL(of_create_pci_dev);
-void __devinit of_scan_bus(struct device_node *node,
- struct pci_bus *bus)
+static void __devinit __of_scan_bus(struct device_node *node,
+ struct pci_bus *bus, int rescan_existing)
{
struct device_node *child;
const u32 *reg;
int reglen, devfn;
struct pci_dev *dev;
- DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number);
+ pr_debug("of_scan_bus(%s) bus no %d... \n",
+ node->full_name, bus->number);
/* Scan direct children */
for_each_child_of_node(node, child) {
- DBG(" * %s\n", child->full_name);
+ pr_debug(" * %s\n", child->full_name);
reg = of_get_property(child, "reg", &reglen);
if (reg == NULL || reglen < 20)
continue;
@@ -217,11 +212,15 @@ void __devinit of_scan_bus(struct device_node *node,
dev = of_create_pci_dev(child, bus, devfn);
if (!dev)
continue;
- DBG(" dev header type: %x\n", dev->hdr_type);
+ pr_debug(" dev header type: %x\n", dev->hdr_type);
}
- /* Ally all fixups */
- pcibios_fixup_of_probed_bus(bus);
+ /* Apply all fixups necessary. We don't fixup the bus "self"
+ * for an existing bridge that is being rescanned
+ */
+ if (!rescan_existing)
+ pcibios_setup_bus_self(bus);
+ pcibios_setup_bus_devices(bus);
/* Now scan child busses */
list_for_each_entry(dev, &bus->devices, bus_list) {
@@ -233,7 +232,20 @@ void __devinit of_scan_bus(struct device_node *node,
}
}
}
-EXPORT_SYMBOL(of_scan_bus);
+
+void __devinit of_scan_bus(struct device_node *node,
+ struct pci_bus *bus)
+{
+ __of_scan_bus(node, bus, 0);
+}
+EXPORT_SYMBOL_GPL(of_scan_bus);
+
+void __devinit of_rescan_bus(struct device_node *node,
+ struct pci_bus *bus)
+{
+ __of_scan_bus(node, bus, 1);
+}
+EXPORT_SYMBOL_GPL(of_rescan_bus);
void __devinit of_scan_pci_bridge(struct device_node *node,
struct pci_dev *dev)
@@ -245,7 +257,7 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
unsigned int flags;
u64 size;
- DBG("of_scan_pci_bridge(%s)\n", node->full_name);
+ pr_debug("of_scan_pci_bridge(%s)\n", node->full_name);
/* parse bus-range property */
busrange = of_get_property(node, "bus-range", &len);
@@ -309,12 +321,12 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
}
sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
bus->number);
- DBG(" bus name: %s\n", bus->name);
+ pr_debug(" bus name: %s\n", bus->name);
mode = PCI_PROBE_NORMAL;
if (ppc_md.pci_probe_mode)
mode = ppc_md.pci_probe_mode(bus);
- DBG(" probe mode: %d\n", mode);
+ pr_debug(" probe mode: %d\n", mode);
if (mode == PCI_PROBE_DEVTREE)
of_scan_bus(node, bus);
@@ -327,9 +339,10 @@ void __devinit scan_phb(struct pci_controller *hose)
{
struct pci_bus *bus;
struct device_node *node = hose->dn;
- int i, mode;
+ int mode;
- DBG("PCI: Scanning PHB %s\n", node ? node->full_name : "<NO NAME>");
+ 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, node);
@@ -345,26 +358,13 @@ void __devinit scan_phb(struct pci_controller *hose)
pcibios_map_io_space(bus);
/* Wire up PHB bus resources */
- DBG("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) {
- DBG("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];
- }
- DBG("PCI: PHB MEM offset = %016lx\n", hose->pci_mem_offset);
- DBG("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;
if (node && ppc_md.pci_probe_mode)
mode = ppc_md.pci_probe_mode(bus);
- DBG(" probe mode: %d\n", mode);
+ pr_debug(" probe mode: %d\n", mode);
if (mode == PCI_PROBE_DEVTREE) {
bus->subordinate = hose->last_busno;
of_scan_bus(node, bus);
@@ -380,7 +380,7 @@ 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;
@@ -388,6 +388,11 @@ static int __init pcibios_init(void)
if (pci_probe_only)
ppc_pci_flags |= PPC_PCI_PROBE_ONLY;
+ /* On ppc64, we always enable PCI domains and we keep domain 0
+ * backward compatible in /proc for video cards
+ */
+ ppc_pci_flags |= PPC_PCI_ENABLE_PROC_DOMAINS | PPC_PCI_COMPAT_DOMAIN_0;
+
/* Scan all of the recorded PCI controllers. */
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
scan_phb(hose);
@@ -422,8 +427,8 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
if (bus->self) {
struct resource *res = bus->resource[0];
- DBG("IO unmapping for PCI-PCI bridge %s\n",
- pci_name(bus->self));
+ pr_debug("IO unmapping for PCI-PCI bridge %s\n",
+ pci_name(bus->self));
__flush_hash_table_range(&init_mm, res->start + _IO_BASE,
res->end + _IO_BASE + 1);
@@ -437,8 +442,8 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
if (hose->io_base_alloc == 0)
return 0;
- DBG("IO unmapping for PHB %s\n", hose->dn->full_name);
- DBG(" alloc=0x%p\n", hose->io_base_alloc);
+ pr_debug("IO unmapping for PHB %s\n", hose->dn->full_name);
+ pr_debug(" alloc=0x%p\n", hose->io_base_alloc);
/* This is a PHB, we fully unmap the IO area */
vunmap(hose->io_base_alloc);
@@ -463,11 +468,11 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
* thus HPTEs will be faulted in when needed
*/
if (bus->self) {
- DBG("IO mapping for PCI-PCI bridge %s\n",
- pci_name(bus->self));
- DBG(" virt=0x%016lx...0x%016lx\n",
- bus->resource[0]->start + _IO_BASE,
- bus->resource[0]->end + _IO_BASE);
+ pr_debug("IO mapping for PCI-PCI bridge %s\n",
+ pci_name(bus->self));
+ pr_debug(" virt=0x%016lx...0x%016lx\n",
+ bus->resource[0]->start + _IO_BASE,
+ bus->resource[0]->end + _IO_BASE);
return 0;
}
@@ -496,11 +501,11 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
hose->io_base_virt = (void __iomem *)(area->addr +
hose->io_base_phys - phys_page);
- DBG("IO mapping for PHB %s\n", hose->dn->full_name);
- DBG(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n",
- hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
- DBG(" size=0x%016lx (alloc=0x%016lx)\n",
- hose->pci_io_size, size_page);
+ pr_debug("IO mapping for PHB %s\n", hose->dn->full_name);
+ pr_debug(" phys=0x%016lx, virt=0x%p (alloc=0x%p)\n",
+ hose->io_base_phys, hose->io_base_virt, hose->io_base_alloc);
+ pr_debug(" size=0x%016lx (alloc=0x%016lx)\n",
+ hose->pci_io_size, size_page);
/* Establish the mapping */
if (__ioremap_at(phys_page, area->addr, size_page,
@@ -512,24 +517,13 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
hose->io_resource.start += io_virt_offset;
hose->io_resource.end += io_virt_offset;
- DBG(" hose->io_resource=0x%016lx...0x%016lx\n",
- hose->io_resource.start, hose->io_resource.end);
+ pr_debug(" hose->io_resource=0x%016lx...0x%016lx\n",
+ hose->io_resource.start, hose->io_resource.end);
return 0;
}
EXPORT_SYMBOL_GPL(pcibios_map_io_space);
-void __devinit pcibios_do_bus_setup(struct pci_bus *bus)
-{
- struct pci_dev *dev;
-
- if (ppc_md.pci_dma_bus_setup)
- ppc_md.pci_dma_bus_setup(bus);
-
- list_for_each_entry(dev, &bus->devices, bus_list)
- pcibios_setup_new_device(dev);
-}
-
unsigned long pci_address_to_pio(phys_addr_t address)
{
struct pci_controller *hose, *tmp;
@@ -566,9 +560,14 @@ long sys_pciconfig_iobase(long which, unsigned long in_bus,
* G5 machines... So when something asks for bus 0 io base
* (bus 0 is HT root), we return the AGP one instead.
*/
- if (machine_is_compatible("MacRISC4"))
- if (in_bus == 0)
+ if (in_bus == 0 && machine_is_compatible("MacRISC4")) {
+ struct device_node *agp;
+
+ agp = of_find_compatible_node(NULL, NULL, "u3-agp");
+ if (agp)
in_bus = 0xf0;
+ of_node_put(agp);
+ }
/* That syscall isn't quite compatible with PCI domains, but it's
* used on pre-domains setup. We return the first match
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-16 09:08:53 +0000