Merge master.kernel.org:/home/rmk/linux-2.6-arm

[pandora-kernel.git] / arch / ppc64 / kernel / pci.c

diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c
index d0d55c7..8447dcc 100644 (file)
--- a/arch/ppc64/kernel/pci.c
+++ b/arch/ppc64/kernel/pci.c
@@ -21,6 +21,7 @@
 #include <linux/bootmem.h>
 #include <linux/mm.h>
 #include <linux/list.h>
+#include <linux/syscalls.h>
 
 #include <asm/processor.h>
 #include <asm/io.h>
@@ -84,7 +85,6 @@ static void fixup_broken_pcnet32(struct pci_dev* dev)
        if ((dev->class>>8 == PCI_CLASS_NETWORK_ETHERNET)) {
                dev->vendor = PCI_VENDOR_ID_AMD;
                pci_write_config_word(dev, PCI_VENDOR_ID, PCI_VENDOR_ID_AMD);
-               pci_name_device(dev);
        }
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TRIDENT, PCI_ANY_ID, fixup_broken_pcnet32);
@@ -838,9 +838,11 @@ int pcibios_scan_all_fns(struct pci_bus *bus, int devfn)
         * device tree.  If they are then we need to scan all the
         * functions of this slot.
         */
-       for (dn = busdn->child; dn; dn = dn->sibling)
-               if ((dn->devfn >> 3) == (devfn >> 3))
+       for (dn = busdn->child; dn; dn = dn->sibling) {
+              struct pci_dn *pdn = dn->data;
+              if (pdn && (pdn->devfn >> 3) == (devfn >> 3))
                        return 1;
+       }
 
        return 0;
 }
@@ -983,3 +985,62 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
 }
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */
+
+
+#define IOBASE_BRIDGE_NUMBER   0
+#define IOBASE_MEMORY          1
+#define IOBASE_IO              2
+#define IOBASE_ISA_IO          3
+#define IOBASE_ISA_MEM         4
+
+long sys_pciconfig_iobase(long which, unsigned long in_bus,
+                         unsigned long in_devfn)
+{
+       struct pci_controller* hose;
+       struct list_head *ln;
+       struct pci_bus *bus = NULL;
+       struct device_node *hose_node;
+
+       /* Argh ! Please forgive me for that hack, but that's the
+        * simplest way to get existing XFree to not lockup on some
+        * G5 machines... So when something asks for bus 0 io base
+        * (bus 0 is HT root), we return the AGP one instead.
+        */
+#ifdef CONFIG_PPC_PMAC
+       if (systemcfg->platform == PLATFORM_POWERMAC &&
+           machine_is_compatible("MacRISC4"))
+               if (in_bus == 0)
+                       in_bus = 0xf0;
+#endif /* CONFIG_PPC_PMAC */
+
+       /* That syscall isn't quite compatible with PCI domains, but it's
+        * used on pre-domains setup. We return the first match
+        */
+
+       for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
+               bus = pci_bus_b(ln);
+               if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate))
+                       break;
+               bus = NULL;
+       }
+       if (bus == NULL || bus->sysdata == NULL)
+               return -ENODEV;
+
+       hose_node = (struct device_node *)bus->sysdata;
+       hose = PCI_DN(hose_node)->phb;
+
+       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 -EINVAL;
+       }
+
+       return -EOPNOTSUPP;
+}