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Diffstat (limited to 'arch/powerpc/kernel/pci_64.c')
-rw-r--r--arch/powerpc/kernel/pci_64.c335
1 files changed, 6 insertions, 329 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 9e8902fa14c..ba949a2c93a 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -43,334 +43,6 @@ unsigned long pci_probe_only = 1;
unsigned long pci_io_base = ISA_IO_BASE;
EXPORT_SYMBOL(pci_io_base);
-static u32 get_int_prop(struct device_node *np, const char *name, u32 def)
-{
- const u32 *prop;
- int len;
-
- prop = of_get_property(np, name, &len);
- if (prop && len >= 4)
- return *prop;
- return def;
-}
-
-static unsigned int pci_parse_of_flags(u32 addr0, int bridge)
-{
- unsigned int flags = 0;
-
- if (addr0 & 0x02000000) {
- flags = IORESOURCE_MEM | PCI_BASE_ADDRESS_SPACE_MEMORY;
- flags |= (addr0 >> 22) & PCI_BASE_ADDRESS_MEM_TYPE_64;
- flags |= (addr0 >> 28) & PCI_BASE_ADDRESS_MEM_TYPE_1M;
- if (addr0 & 0x40000000)
- flags |= IORESOURCE_PREFETCH
- | PCI_BASE_ADDRESS_MEM_PREFETCH;
- /* Note: We don't know whether the ROM has been left enabled
- * by the firmware or not. We mark it as disabled (ie, we do
- * not set the IORESOURCE_ROM_ENABLE flag) for now rather than
- * do a config space read, it will be force-enabled if needed
- */
- if (!bridge && (addr0 & 0xff) == 0x30)
- flags |= IORESOURCE_READONLY;
- } else if (addr0 & 0x01000000)
- flags = IORESOURCE_IO | PCI_BASE_ADDRESS_SPACE_IO;
- if (flags)
- flags |= IORESOURCE_SIZEALIGN;
- return flags;
-}
-
-
-static void pci_parse_of_addrs(struct device_node *node, struct pci_dev *dev)
-{
- u64 base, size;
- unsigned int flags;
- struct resource *res;
- const u32 *addrs;
- u32 i;
- int proplen;
-
- addrs = of_get_property(node, "assigned-addresses", &proplen);
- if (!addrs)
- return;
- pr_debug(" parse addresses (%d bytes) @ %p\n", proplen, addrs);
- for (; proplen >= 20; proplen -= 20, addrs += 5) {
- flags = pci_parse_of_flags(addrs[0], 0);
- if (!flags)
- continue;
- base = of_read_number(&addrs[1], 2);
- size = of_read_number(&addrs[3], 2);
- if (!size)
- continue;
- i = addrs[0] & 0xff;
- 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];
- } else if (i == dev->rom_base_reg) {
- res = &dev->resource[PCI_ROM_RESOURCE];
- flags |= IORESOURCE_READONLY | IORESOURCE_CACHEABLE;
- } else {
- printk(KERN_ERR "PCI: bad cfg reg num 0x%x\n", i);
- continue;
- }
- res->start = base;
- res->end = base + size - 1;
- res->flags = flags;
- res->name = pci_name(dev);
- }
-}
-
-struct pci_dev *of_create_pci_dev(struct device_node *node,
- struct pci_bus *bus, int devfn)
-{
- struct pci_dev *dev;
- const char *type;
-
- dev = alloc_pci_dev();
- if (!dev)
- return NULL;
- type = of_get_property(node, "device_type", NULL);
- if (type == NULL)
- type = "";
-
- pr_debug(" create device, devfn: %x, type: %s\n", devfn, type);
-
- dev->bus = bus;
- dev->sysdata = node;
- dev->dev.parent = bus->bridge;
- dev->dev.bus = &pci_bus_type;
- dev->devfn = devfn;
- dev->multifunction = 0; /* maybe a lie? */
-
- dev->vendor = get_int_prop(node, "vendor-id", 0xffff);
- dev->device = get_int_prop(node, "device-id", 0xffff);
- dev->subsystem_vendor = get_int_prop(node, "subsystem-vendor-id", 0);
- dev->subsystem_device = get_int_prop(node, "subsystem-id", 0);
-
- dev->cfg_size = pci_cfg_space_size(dev);
-
- dev_set_name(&dev->dev, "%04x:%02x:%02x.%d", pci_domain_nr(bus),
- dev->bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
- dev->class = get_int_prop(node, "class-code", 0);
- dev->revision = get_int_prop(node, "revision-id", 0);
-
- 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;
- dev->dma_mask = 0xffffffff;
-
- if (!strcmp(type, "pci") || !strcmp(type, "pciex")) {
- /* a PCI-PCI bridge */
- dev->hdr_type = PCI_HEADER_TYPE_BRIDGE;
- dev->rom_base_reg = PCI_ROM_ADDRESS1;
- } else if (!strcmp(type, "cardbus")) {
- dev->hdr_type = PCI_HEADER_TYPE_CARDBUS;
- } else {
- dev->hdr_type = PCI_HEADER_TYPE_NORMAL;
- dev->rom_base_reg = PCI_ROM_ADDRESS;
- /* Maybe do a default OF mapping here */
- dev->irq = NO_IRQ;
- }
-
- pci_parse_of_addrs(node, dev);
-
- pr_debug(" adding to system ...\n");
-
- pci_device_add(dev, bus);
-
- return dev;
-}
-EXPORT_SYMBOL(of_create_pci_dev);
-
-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;
-
- 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) {
- pr_debug(" * %s\n", child->full_name);
- reg = of_get_property(child, "reg", &reglen);
- if (reg == NULL || reglen < 20)
- continue;
- devfn = (reg[0] >> 8) & 0xff;
-
- /* create a new pci_dev for this device */
- dev = of_create_pci_dev(child, bus, devfn);
- if (!dev)
- continue;
- pr_debug(" dev header type: %x\n", dev->hdr_type);
- }
-
- /* 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) {
- if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
- 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);
- }
- }
-}
-
-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)
-{
- struct pci_bus *bus;
- const u32 *busrange, *ranges;
- int len, i, mode;
- struct resource *res;
- unsigned int flags;
- u64 size;
-
- pr_debug("of_scan_pci_bridge(%s)\n", node->full_name);
-
- /* parse bus-range property */
- busrange = of_get_property(node, "bus-range", &len);
- if (busrange == NULL || len != 8) {
- printk(KERN_DEBUG "Can't get bus-range for PCI-PCI bridge %s\n",
- node->full_name);
- return;
- }
- ranges = of_get_property(node, "ranges", &len);
- if (ranges == NULL) {
- printk(KERN_DEBUG "Can't get ranges for PCI-PCI bridge %s\n",
- node->full_name);
- return;
- }
-
- bus = pci_add_new_bus(dev->bus, dev, busrange[0]);
- if (!bus) {
- printk(KERN_ERR "Failed to create pci bus for %s\n",
- node->full_name);
- return;
- }
-
- bus->primary = dev->bus->number;
- bus->subordinate = busrange[1];
- bus->bridge_ctl = 0;
- bus->sysdata = node;
-
- /* parse ranges property */
- /* PCI #address-cells == 3 and #size-cells == 2 always */
- res = &dev->resource[PCI_BRIDGE_RESOURCES];
- for (i = 0; i < PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES; ++i) {
- res->flags = 0;
- bus->resource[i] = res;
- ++res;
- }
- i = 1;
- for (; len >= 32; len -= 32, ranges += 8) {
- flags = pci_parse_of_flags(ranges[0], 1);
- size = of_read_number(&ranges[6], 2);
- if (flags == 0 || size == 0)
- continue;
- if (flags & IORESOURCE_IO) {
- res = bus->resource[0];
- if (res->flags) {
- printk(KERN_ERR "PCI: ignoring extra I/O range"
- " for bridge %s\n", node->full_name);
- continue;
- }
- } else {
- if (i >= PCI_NUM_RESOURCES - PCI_BRIDGE_RESOURCES) {
- printk(KERN_ERR "PCI: too many memory ranges"
- " for bridge %s\n", node->full_name);
- continue;
- }
- res = bus->resource[i];
- ++i;
- }
- res->start = of_read_number(&ranges[1], 2);
- res->end = res->start + size - 1;
- res->flags = flags;
- }
- sprintf(bus->name, "PCI Bus %04x:%02x", pci_domain_nr(bus),
- bus->number);
- 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);
- pr_debug(" probe mode: %d\n", mode);
-
- if (mode == PCI_PROBE_DEVTREE)
- of_scan_bus(node, bus);
- else if (mode == PCI_PROBE_NORMAL)
- pci_scan_child_bus(bus);
-}
-EXPORT_SYMBOL(of_scan_pci_bridge);
-
-void __devinit scan_phb(struct pci_controller *hose)
-{
- struct pci_bus *bus;
- struct device_node *node = hose->dn;
- int mode;
-
- 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);
- 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;
-
- /* Get some IO space for the new PHB */
- pcibios_map_io_space(bus);
-
- /* Wire up PHB bus resources */
- 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);
- pr_debug(" probe mode: %d\n", mode);
- if (mode == PCI_PROBE_DEVTREE) {
- bus->subordinate = hose->last_busno;
- of_scan_bus(node, bus);
- }
-
- if (mode == PCI_PROBE_NORMAL)
- hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
-}
-
static int __init pcibios_init(void)
{
struct pci_controller *hose, *tmp;
@@ -392,7 +64,7 @@ static int __init pcibios_init(void)
/* Scan all of the recorded PCI controllers. */
list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
- scan_phb(hose);
+ pcibios_scan_phb(hose, hose->dn);
pci_bus_add_devices(hose->bus);
}
@@ -526,6 +198,11 @@ int __devinit pcibios_map_io_space(struct pci_bus *bus)
}
EXPORT_SYMBOL_GPL(pcibios_map_io_space);
+void __devinit pcibios_setup_phb_io_space(struct pci_controller *hose)
+{
+ pcibios_map_io_space(hose->bus);
+}
+
#define IOBASE_BRIDGE_NUMBER 0
#define IOBASE_MEMORY 1
#define IOBASE_IO 2
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 18:20:22 +0000