[PATCH] powerpc: pci_64 fixes & cleanups

I discovered that in some cases (PowerMac for example) we wouldn't
properly map the PCI IO space on recent kernels. In addition, the code
for initializing PCI host bridges was scattered all over the place with
some duplication between platforms.

This patch fixes the problem and does a small cleanup by creating a
pcibios_alloc_controller() in pci_64.c that is similar to the one in
pci_32.c (just takes an additional device node argument) that takes care
of all the grunt allocation and initialisation work. It should work for
both boot time and dynamically allocated PHBs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 10 insertions, 4 deletions

diff --git a/include/asm-ppc64/pci-bridge.h b/include/asm-ppc64/pci-bridge.h
index efbdaece0cf0..cf04327a597a 100644
--- a/include/asm-ppc64/pci-bridge.h
+++ b/include/asm-ppc64/pci-bridge.h
@@ -61,12 +61,14 @@ struct pci_dn {
         int     busno;                  /* for pci devices */
         int     bussubno;               /* for pci devices */
         int     devfn;                  /* for pci devices */
+
+#ifdef CONFIG_PPC_PSERIES
         int     eeh_mode;               /* See eeh.h for possible EEH_MODEs */
         int     eeh_config_addr;
         int     eeh_check_count;        /* # times driver ignored error */
         int     eeh_freeze_count;       /* # times this device froze up. */
         int     eeh_is_bridge;          /* device is pci-to-pci bridge */
-
+#endif
         int     pci_ext_config_space;   /* for pci devices */
         struct  pci_controller *phb;    /* for pci devices */
         struct  iommu_table *iommu_table;       /* for phb's or bridges */
@@ -74,9 +76,9 @@ struct pci_dn {
         struct  device_node *node;      /* back-pointer to the device_node */
 #ifdef CONFIG_PPC_ISERIES
         struct  list_head Device_List;
-        int             Irq;            /* Assigned IRQ */
-        int             Flags;          /* Possible flags(disable/bist)*/
-        u8              LogicalSlot;    /* Hv Slot Index for Tces */
+        int     Irq;                    /* Assigned IRQ */
+        int     Flags;                  /* Possible flags(disable/bist)*/
+        u8      LogicalSlot;            /* Hv Slot Index for Tces */
 #endif
         u32     config_space[16];       /* saved PCI config space */
 };
@@ -136,6 +138,10 @@ static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
         return PCI_DN(busdn)->phb;
 }
 
+extern struct pci_controller *
+pcibios_alloc_controller(struct device_node *dev);
+extern void pcibios_free_controller(struct pci_controller *phb);
+
 /* Return values for ppc_md.pci_probe_mode function */
 #define PCI_PROBE_NONE          -1      /* Don't look at this bus at all */
 #define PCI_PROBE_NORMAL        0       /* Do normal PCI probing */