Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / arch / microblaze / pci / pci-common.c

diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 5359906..041b1d8 100644 (file)
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -50,6 +50,11 @@ unsigned int pci_flags;
 
 static struct dma_map_ops *pci_dma_ops = &dma_direct_ops;
 
+unsigned long isa_io_base;
+unsigned long pci_dram_offset;
+static int pci_bus_count;
+
+
 void set_pci_dma_ops(struct dma_map_ops *dma_ops)
 {
        pci_dma_ops = dma_ops;
@@ -1558,6 +1563,112 @@ void __devinit pcibios_setup_phb_resources(struct pci_controller *hose)
                 (unsigned long)hose->io_base_virt - _IO_BASE);
 }
 
+struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus)
+{
+       struct pci_controller *hose = bus->sysdata;
+
+       return of_node_get(hose->dn);
+}
+
+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;
+       int next_busno = 0;
+
+       printk(KERN_INFO "PCI: Probing PCI hardware\n");
+
+       /* Scan all of the recorded PCI controllers.  */
+       list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+               hose->last_busno = 0xff;
+               pcibios_scan_phb(hose);
+               printk(KERN_INFO "calling pci_bus_add_devices()\n");
+               pci_bus_add_devices(hose->bus);
+               if (next_busno <= hose->last_busno)
+                       next_busno = hose->last_busno + 1;
+       }
+       pci_bus_count = next_busno;
+
+       /* Call common code to handle resource allocation */
+       pcibios_resource_survey();
+
+       return 0;
+}
+
+subsys_initcall(pcibios_init);
+
+static struct pci_controller *pci_bus_to_hose(int bus)
+{
+       struct pci_controller *hose, *tmp;
+
+       list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+               if (bus >= hose->first_busno && bus <= hose->last_busno)
+                       return hose;
+       return NULL;
+}
+
+/* Provide information on locations of various I/O regions in physical
+ * memory.  Do this on a per-card basis so that we choose the right
+ * root bridge.
+ * Note that the returned IO or memory base is a physical address
+ */
+
+long sys_pciconfig_iobase(long which, unsigned long bus, unsigned long devfn)
+{
+       struct pci_controller *hose;
+       long result = -EOPNOTSUPP;
+
+       hose = pci_bus_to_hose(bus);
+       if (!hose)
+               return -ENODEV;
+
+       switch (which) {
+       case IOBASE_BRIDGE_NUMBER:
+               return (long)hose->first_busno;
+       case IOBASE_MEMORY:
+               return (long)hose->pci_mem_offset;
+       case IOBASE_IO:
+               return (long)hose->io_base_phys;
+       case IOBASE_ISA_IO:
+               return (long)isa_io_base;
+       case IOBASE_ISA_MEM:
+               return (long)isa_mem_base;
+       }
+
+       return result;
+}
+
 /*
  * Null PCI config access functions, for the case when we can't
  * find a hose.
@@ -1626,3 +1737,4 @@ int early_find_capability(struct pci_controller *hose, int bus, int devfn,
 {
        return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
 }
+