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-rw-r--r--arch/powerpc/kernel/pci-common.c130
-rw-r--r--arch/powerpc/kernel/pci_32.c83
-rw-r--r--arch/powerpc/kernel/pci_64.c104
3 files changed, 149 insertions, 168 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 0245c989d30a..c61e9324f770 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -691,3 +691,133 @@ void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
res->end = (region->end + offset) & mask;
}
EXPORT_SYMBOL(pcibios_bus_to_resource);
+
+/* Fixup a bus resource into a linux resource */
+static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
+{
+ struct pci_controller *hose = pci_bus_to_host(dev->bus);
+ resource_size_t offset = 0, mask = (resource_size_t)-1;
+
+ if (res->flags & IORESOURCE_IO) {
+ offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+ mask = 0xffffffffu;
+ } else if (res->flags & IORESOURCE_MEM)
+ offset = hose->pci_mem_offset;
+
+ res->start = (res->start + offset) & mask;
+ res->end = (res->end + offset) & mask;
+
+ pr_debug("PCI:%s %016llx-%016llx\n",
+ pci_name(dev),
+ (unsigned long long)res->start,
+ (unsigned long long)res->end);
+}
+
+
+/* This header fixup will do the resource fixup for all devices as they are
+ * probed, but not for bridge ranges
+ */
+static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
+{
+ struct pci_controller *hose = pci_bus_to_host(dev->bus);
+ int i;
+
+ if (!hose) {
+ printk(KERN_ERR "No host bridge for PCI dev %s !\n",
+ pci_name(dev));
+ return;
+ }
+ for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+ struct resource *res = dev->resource + i;
+ if (!res->flags)
+ continue;
+ if (res->end == 0xffffffff) {
+ pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] is unassigned\n",
+ pci_name(dev), i,
+ (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned int)res->flags);
+ res->end -= res->start;
+ res->start = 0;
+ res->flags |= IORESOURCE_UNSET;
+ continue;
+ }
+
+ pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] fixup...\n",
+ pci_name(dev), i,
+ (unsigned long long)res->start,\
+ (unsigned long long)res->end,
+ (unsigned int)res->flags);
+
+ fixup_resource(res, dev);
+ }
+
+ /* Call machine specific resource fixup */
+ if (ppc_md.pcibios_fixup_resources)
+ ppc_md.pcibios_fixup_resources(dev);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_resources);
+
+static void __devinit __pcibios_fixup_bus(struct pci_bus *bus)
+{
+ struct pci_dev *dev = bus->self;
+
+ pr_debug("PCI: Fixup bus %d (%s)\n", bus->number, dev ? pci_name(dev) : "PHB");
+
+ /* Fixup PCI<->PCI bridges. Host bridges are handled separately, for
+ * now differently between 32 and 64 bits.
+ */
+ if (dev != NULL) {
+ struct resource *res;
+ int i;
+
+ for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
+ if ((res = bus->resource[i]) == NULL)
+ continue;
+ if (!res->flags || bus->self->transparent)
+ continue;
+
+ pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
+ pci_name(dev), i,
+ (unsigned long long)res->start,\
+ (unsigned long long)res->end,
+ (unsigned int)res->flags);
+
+ fixup_resource(res, dev);
+ }
+ }
+
+ /* Additional setup that is different between 32 and 64 bits for now */
+ pcibios_do_bus_setup(bus);
+
+ /* Platform specific bus fixups */
+ if (ppc_md.pcibios_fixup_bus)
+ ppc_md.pcibios_fixup_bus(bus);
+
+ /* Read default IRQs and fixup if necessary */
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ pci_read_irq_line(dev);
+ if (ppc_md.pci_irq_fixup)
+ ppc_md.pci_irq_fixup(dev);
+ }
+}
+
+void __devinit pcibios_fixup_bus(struct pci_bus *bus)
+{
+ /* When called from the generic PCI probe, read PCI<->PCI bridge
+ * bases before proceeding
+ */
+ if (bus->self != NULL)
+ pci_read_bridge_bases(bus);
+ __pcibios_fixup_bus(bus);
+}
+EXPORT_SYMBOL(pcibios_fixup_bus);
+
+/* When building a bus from the OF tree rather than probing, we need a
+ * slightly different version of the fixup which doesn't read the
+ * bridge bases using config space accesses
+ */
+void __devinit pcibios_fixup_of_probed_bus(struct pci_bus *bus)
+{
+ __pcibios_fixup_bus(bus);
+}
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index f05ef5b17892..717c554d4658 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -40,7 +40,6 @@ unsigned int ppc_pci_flags;
void pcibios_make_OF_bus_map(void);
-static void pcibios_fixup_resources(struct pci_dev* dev);
static void fixup_broken_pcnet32(struct pci_dev* dev);
static int reparent_resources(struct resource *parent, struct resource *res);
static void fixup_cpc710_pci64(struct pci_dev* dev);
@@ -98,53 +97,6 @@ fixup_cpc710_pci64(struct pci_dev* dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CPC710_PCI64, fixup_cpc710_pci64);
-static void
-pcibios_fixup_resources(struct pci_dev *dev)
-{
- struct pci_controller* hose = (struct pci_controller *)dev->sysdata;
- int i;
- resource_size_t offset, mask;
-
- if (!hose) {
- printk(KERN_ERR "No hose for PCI dev %s!\n", pci_name(dev));
- return;
- }
- for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
- struct resource *res = dev->resource + i;
- if (!res->flags)
- continue;
- if (res->end == 0xffffffff) {
- DBG("PCI:%s Resource %d [%016llx-%016llx] is unassigned\n",
- pci_name(dev), i, (u64)res->start, (u64)res->end);
- res->end -= res->start;
- res->start = 0;
- res->flags |= IORESOURCE_UNSET;
- continue;
- }
- offset = 0;
- mask = (resource_size_t)-1;
- if (res->flags & IORESOURCE_MEM) {
- offset = hose->pci_mem_offset;
- } else if (res->flags & IORESOURCE_IO) {
- offset = (unsigned long) hose->io_base_virt
- - isa_io_base;
- mask = 0xffffffffu;
- }
- if (offset != 0) {
- res->start = (res->start + offset) & mask;
- res->end = (res->end + offset) & mask;
- DBG("PCI: Fixup res %d (0x%lx) of dev %s: %llx -> %llx\n",
- i, res->flags, pci_name(dev),
- (u64)res->start - offset, (u64)res->start);
- }
- }
-
- /* Call machine specific resource fixup */
- if (ppc_md.pcibios_fixup_resources)
- ppc_md.pcibios_fixup_resources(dev);
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_resources);
-
static int skip_isa_ioresource_align(struct pci_dev *dev)
{
if ((ppc_pci_flags & PPC_PCI_CAN_SKIP_ISA_ALIGN) &&
@@ -757,14 +709,14 @@ pcibios_init(void)
subsys_initcall(pcibios_init);
-void pcibios_fixup_bus(struct pci_bus *bus)
+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;
- struct pci_dev *dev;
int i;
+ /* 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 */
@@ -795,37 +747,6 @@ void pcibios_fixup_bus(struct pci_bus *bus)
}
bus->resource[i+1] = res;
}
- } else {
- /* This is a subordinate bridge */
- pci_read_bridge_bases(bus);
-
- for (i = 0; i < 4; ++i) {
- if ((res = bus->resource[i]) == NULL)
- continue;
- if (!res->flags || bus->self->transparent)
- continue;
- if (io_offset && (res->flags & IORESOURCE_IO)) {
- res->start = (res->start + io_offset) &
- 0xffffffffu;
- res->end = (res->end + io_offset) &
- 0xffffffffu;
- } else if (hose->pci_mem_offset
- && (res->flags & IORESOURCE_MEM)) {
- res->start += hose->pci_mem_offset;
- res->end += hose->pci_mem_offset;
- }
- }
- }
-
- /* Platform specific bus fixups */
- if (ppc_md.pcibios_fixup_bus)
- ppc_md.pcibios_fixup_bus(bus);
-
- /* Read default IRQs and fixup if necessary */
- list_for_each_entry(dev, &bus->devices, bus_list) {
- pci_read_irq_line(dev);
- if (ppc_md.pci_irq_fixup)
- ppc_md.pci_irq_fixup(dev);
}
}
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 6d1c28fc5e23..b9619b9e5e02 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -41,9 +41,6 @@
unsigned long pci_probe_only = 1;
-static void fixup_resource(struct resource *res, struct pci_dev *dev);
-static void do_bus_setup(struct pci_bus *bus);
-
/* pci_io_base -- the base address from which io bars are offsets.
* This is the lowest I/O base address (so bar values are always positive),
* and it *must* be the start of ISA space if an ISA bus exists because
@@ -239,7 +236,6 @@ static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
res->end = base + size - 1;
res->flags = flags;
res->name = pci_name(dev);
- fixup_resource(res, dev);
}
}
@@ -308,7 +304,7 @@ 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)
+ struct pci_bus *bus)
{
struct device_node *child = NULL;
const u32 *reg;
@@ -317,6 +313,7 @@ void __devinit of_scan_bus(struct device_node *node,
DBG("of_scan_bus(%s) bus no %d... \n", node->full_name, bus->number);
+ /* Scan direct children */
while ((child = of_get_next_child(node, child)) != NULL) {
DBG(" * %s\n", child->full_name);
reg = of_get_property(child, "reg", &reglen);
@@ -328,19 +325,26 @@ 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);
+ DBG(" dev header type: %x\n", dev->hdr_type);
+ }
+
+ /* Ally all fixups */
+ pcibios_fixup_of_probed_bus(bus);
+ /* Now scan child busses */
+ list_for_each_entry(dev, &bus->devices, bus_list) {
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
- dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
- of_scan_pci_bridge(child, dev);
+ dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
+ struct device_node *child = pci_device_to_OF_node(dev);
+ if (dev)
+ of_scan_pci_bridge(child, dev);
+ }
}
-
- do_bus_setup(bus);
}
EXPORT_SYMBOL(of_scan_bus);
void __devinit of_scan_pci_bridge(struct device_node *node,
- struct pci_dev *dev)
+ struct pci_dev *dev)
{
struct pci_bus *bus;
const u32 *busrange, *ranges;
@@ -410,7 +414,6 @@ void __devinit of_scan_pci_bridge(struct device_node *node,
res->start = of_read_number(&ranges[1], 2);
res->end = res->start + size - 1;
res->flags = flags;
- fixup_resource(res, dev);
}
sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
bus->number);
@@ -659,51 +662,13 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
}
EXPORT_SYMBOL_GPL(pcibios_map_io_space);
-static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
-{
- struct pci_controller *hose = pci_bus_to_host(dev->bus);
- unsigned long offset;
-
- if (res->flags & IORESOURCE_IO) {
- offset = (unsigned long)hose->io_base_virt - _IO_BASE;
- res->start += offset;
- res->end += offset;
- } else if (res->flags & IORESOURCE_MEM) {
- res->start += hose->pci_mem_offset;
- res->end += hose->pci_mem_offset;
- }
-}
-
-void __devinit pcibios_fixup_device_resources(struct pci_dev *dev,
- struct pci_bus *bus)
-{
- /* Update device resources. */
- int i;
-
- DBG("%s: Fixup resources:\n", pci_name(dev));
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- struct resource *res = &dev->resource[i];
- if (!res->flags)
- continue;
-
- DBG(" 0x%02x < %08lx:0x%016lx...0x%016lx\n",
- i, res->flags, res->start, res->end);
-
- fixup_resource(res, dev);
-
- DBG(" > %08lx:0x%016lx...0x%016lx\n",
- res->flags, res->start, res->end);
- }
-}
-EXPORT_SYMBOL(pcibios_fixup_device_resources);
-
void __devinit pcibios_setup_new_device(struct pci_dev *dev)
{
struct dev_archdata *sd = &dev->dev.archdata;
sd->of_node = pci_device_to_OF_node(dev);
- DBG("PCI device %s OF node: %s\n", pci_name(dev),
+ DBG("PCI: device %s OF node: %s\n", pci_name(dev),
sd->of_node ? sd->of_node->full_name : "<none>");
sd->dma_ops = pci_dma_ops;
@@ -717,7 +682,7 @@ void __devinit pcibios_setup_new_device(struct pci_dev *dev)
}
EXPORT_SYMBOL(pcibios_setup_new_device);
-static void __devinit do_bus_setup(struct pci_bus *bus)
+void __devinit pcibios_do_bus_setup(struct pci_bus *bus)
{
struct pci_dev *dev;
@@ -726,42 +691,7 @@ static void __devinit do_bus_setup(struct pci_bus *bus)
list_for_each_entry(dev, &bus->devices, bus_list)
pcibios_setup_new_device(dev);
-
- /* Read default IRQs and fixup if necessary */
- list_for_each_entry(dev, &bus->devices, bus_list) {
- pci_read_irq_line(dev);
- if (ppc_md.pci_irq_fixup)
- ppc_md.pci_irq_fixup(dev);
- }
-}
-
-void __devinit pcibios_fixup_bus(struct pci_bus *bus)
-{
- struct pci_dev *dev = bus->self;
- struct device_node *np;
-
- np = pci_bus_to_OF_node(bus);
-
- DBG("pcibios_fixup_bus(%s)\n", np ? np->full_name : "<???>");
-
- if (dev && pci_probe_only &&
- (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
- /* This is a subordinate bridge */
-
- pci_read_bridge_bases(bus);
- pcibios_fixup_device_resources(dev, bus);
- }
-
- do_bus_setup(bus);
-
- if (!pci_probe_only)
- return;
-
- list_for_each_entry(dev, &bus->devices, bus_list)
- if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI)
- pcibios_fixup_device_resources(dev, bus);
}
-EXPORT_SYMBOL(pcibios_fixup_bus);
unsigned long pci_address_to_pio(phys_addr_t address)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 02:12:49 +0000