Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/ppc64-2.6

23 files changed, 333 insertions, 203 deletions

diff --git a/arch/ppc64/Makefile b/arch/ppc64/Makefile
index 8189953a372c..a91daa324e88 100644
--- a/arch/ppc64/Makefile
+++ b/arch/ppc64/Makefile
@@ -89,11 +89,12 @@ drivers-$(CONFIG_OPROFILE)	+= arch/ppc64/oprofile/
 
 boot := arch/ppc64/boot
 
-boottarget-$(CONFIG_PPC_PSERIES) := zImage zImage.initrd
-boottarget-$(CONFIG_PPC_MAPLE) := zImage zImage.initrd
-boottarget-$(CONFIG_PPC_ISERIES) := vmlinux.sminitrd vmlinux.initrd vmlinux.sm
-boottarget-$(CONFIG_PPC_BPA) := zImage zImage.initrd
-$(boottarget-y): vmlinux
+boottargets-$(CONFIG_PPC_PSERIES) += zImage zImage.initrd
+boottargets-$(CONFIG_PPC_PMAC) += zImage.vmode zImage.initrd.vmode
+boottargets-$(CONFIG_PPC_MAPLE) += zImage zImage.initrd
+boottargets-$(CONFIG_PPC_ISERIES) += vmlinux.sminitrd vmlinux.initrd vmlinux.sm
+boottargets-$(CONFIG_PPC_BPA) += zImage zImage.initrd
+$(boottargets-y): vmlinux
         $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
 bootimage-$(CONFIG_PPC_PSERIES) := $(boot)/zImage
@@ -131,10 +132,12 @@ include3/asm:
         $(Q)ln -fsn $(srctree)/include/asm-powerpc include3/asm
 
 define archhelp
-  echo  '* zImage       - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
-  echo  '  zImage.initrd- Compressed kernel image with initrd attached,'
-  echo  '                  sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
-  echo  '                  (arch/$(ARCH)/boot/zImage.initrd)'
+  echo  '  zImage.vmode        - Compressed kernel image (arch/$(ARCH)/boot/zImage.vmode)'
+  echo  '  zImage.initrd.vmode - Compressed kernel image with initrd attached,'
+  echo  '                        sourced from arch/$(ARCH)/boot/ramdisk.image.gz'
+  echo  '                        (arch/$(ARCH)/boot/zImage.initrd.vmode)'
+  echo  '  zImage              - zImage for pSeries machines'
+  echo  '  zImage.initrd       - zImage with initrd for pSeries machines'
 endef
 
 CLEAN_FILES += include/asm-ppc64/offsets.h
diff --git a/arch/ppc64/boot/Makefile b/arch/ppc64/boot/Makefile
index 2c5f5e73d00c..33fdc8710891 100644
--- a/arch/ppc64/boot/Makefile
+++ b/arch/ppc64/boot/Makefile
@@ -37,6 +37,9 @@ quiet_cmd_bootcc = BOOTCC  $@
 quiet_cmd_bootas = BOOTAS  $@
       cmd_bootas = $(CROSS32CC) -Wp,-MD,$(depfile) $(BOOTAFLAGS) -c -o $@ $<
 
+quiet_cmd_bootld = BOOTLD  $@
+      cmd_bootld = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(2)
+
 $(patsubst %.c,%.o, $(filter %.c, $(src-boot))): %.o: %.c
         $(call if_changed_dep,bootcc)
 $(patsubst %.S,%.o, $(filter %.S, $(src-boot))): %.o: %.S
@@ -53,7 +56,7 @@ src-sec = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.c, $(section)))
 gz-sec  = $(foreach section, $(1), $(patsubst %,$(obj)/kernel-%.gz, $(section)))
 
 hostprogs-y             := addnote addRamDisk
-targets                 += zImage zImage.initrd imagesize.c \
+targets                 += zImage.vmode zImage.initrd.vmode zImage zImage.initrd imagesize.c \
                            $(patsubst $(obj)/%,%, $(call obj-sec, $(required) $(initrd))) \
                            $(patsubst $(obj)/%,%, $(call src-sec, $(required) $(initrd))) \
                            $(patsubst $(obj)/%,%, $(call gz-sec, $(required) $(initrd))) \
@@ -63,7 +66,7 @@ extra-y			:= initrd.o
 quiet_cmd_ramdisk = RAMDISK $@
       cmd_ramdisk = $(obj)/addRamDisk $(obj)/ramdisk.image.gz $< $@
 
-quiet_cmd_stripvm = STRIP $@
+quiet_cmd_stripvm = STRIP   $@
       cmd_stripvm = $(STRIP) -s $< -o $@
 
 vmlinux.strip: vmlinux FORCE
@@ -71,12 +74,20 @@ vmlinux.strip: vmlinux FORCE
 $(obj)/vmlinux.initrd: vmlinux.strip $(obj)/addRamDisk $(obj)/ramdisk.image.gz FORCE
         $(call if_changed,ramdisk)
 
-addsection = $(CROSS32OBJCOPY) $(1) \
-                --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $(1)))=$(patsubst %.o,%.gz, $(1)) \
-                --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $(1)))=$(OBJCOPYFLAGS)
+quiet_cmd_addsection = ADDSEC  $@
+      cmd_addsection = $(CROSS32OBJCOPY) $@ \
+                --add-section=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(patsubst %.o,%.gz, $@) \
+                --set-section-flags=.kernel:$(strip $(patsubst $(obj)/kernel-%.o,%, $@))=$(OBJCOPYFLAGS)
+
+quiet_cmd_imagesize = GENSIZE $@
+      cmd_imagesize = ls -l vmlinux.strip | \
+                awk '{printf "/* generated -- do not edit! */\n" "unsigned long vmlinux_filesize = %d;\n", $$5}' \
+                > $(obj)/imagesize.c && \
+                $(CROSS_COMPILE)nm -n vmlinux | tail -n 1 | \
+                awk '{printf "unsigned long vmlinux_memsize = 0x%s;\n", substr($$1,8)}' >> $(obj)/imagesize.c
 
-quiet_cmd_addnote = ADDNOTE $@ 
-      cmd_addnote = $(CROSS32LD) $(BOOTLFLAGS) -o $@ $(obj-boot) && $(obj)/addnote $@
+quiet_cmd_addnote = ADDNOTE $@
+      cmd_addnote = $(obj)/addnote $@
 
 $(call gz-sec, $(required)): $(obj)/kernel-%.gz: % FORCE
         $(call if_changed,gzip)
@@ -85,28 +96,30 @@ $(obj)/kernel-initrd.gz: $(obj)/ramdisk.image.gz
         cp -f $(obj)/ramdisk.image.gz $@
 
 $(call src-sec, $(required) $(initrd)): $(obj)/kernel-%.c: $(obj)/kernel-%.gz FORCE
-        touch $@
+        @touch $@
 
 $(call obj-sec, $(required) $(initrd)): $(obj)/kernel-%.o: $(obj)/kernel-%.c FORCE
         $(call if_changed_dep,bootcc)
-        $(call addsection, $@)
+        $(call cmd,addsection)
+
+$(obj)/zImage.vmode: obj-boot += $(call obj-sec, $(required))
+$(obj)/zImage.vmode: $(call obj-sec, $(required)) $(obj-boot) FORCE
+        $(call cmd,bootld,$(obj-boot))
+
+$(obj)/zImage.initrd.vmode: obj-boot += $(call obj-sec, $(required) $(initrd))
+$(obj)/zImage.initrd.vmode: $(call obj-sec, $(required) $(initrd)) $(obj-boot) FORCE
+        $(call cmd,bootld,$(obj-boot))
 
-$(obj)/zImage: obj-boot += $(call obj-sec, $(required))
-$(obj)/zImage: $(call obj-sec, $(required)) $(obj-boot) $(obj)/addnote FORCE
+$(obj)/zImage: $(obj)/zImage.vmode $(obj)/addnote FORCE
+        @cp -f $< $@
         $(call if_changed,addnote)
 
-$(obj)/zImage.initrd: obj-boot += $(call obj-sec, $(required) $(initrd))
-$(obj)/zImage.initrd: $(call obj-sec, $(required) $(initrd)) $(obj-boot) $(obj)/addnote FORCE
+$(obj)/zImage.initrd: $(obj)/zImage.initrd.vmode $(obj)/addnote FORCE
+        @cp -f $< $@
         $(call if_changed,addnote)
 
 $(obj)/imagesize.c: vmlinux.strip
-        @echo Generating $@
-        ls -l vmlinux.strip | \
-        awk '{printf "/* generated -- do not edit! */\n" \
-                "unsigned long vmlinux_filesize = %d;\n", $$5}' > $(obj)/imagesize.c
-        $(CROSS_COMPILE)nm -n vmlinux | tail -n 1 | \
-        awk '{printf "unsigned long vmlinux_memsize = 0x%s;\n", substr($$1,8)}' \
-                >> $(obj)/imagesize.c
+        $(call cmd,imagesize)
 
 install: $(CONFIGURE) $(BOOTIMAGE)
         sh -x $(srctree)/$(src)/install.sh "$(KERNELRELEASE)" vmlinux System.map "$(INSTALL_PATH)" "$(BOOTIMAGE)"
diff --git a/arch/ppc64/boot/main.c b/arch/ppc64/boot/main.c
index 99e68cfbe688..f7ec19a2d0b0 100644
--- a/arch/ppc64/boot/main.c
+++ b/arch/ppc64/boot/main.c
@@ -23,7 +23,8 @@ extern void flush_cache(void *, unsigned long);
 
 /* Value picked to match that used by yaboot */
 #define PROG_START      0x01400000
-#define RAM_END         (256<<20) // Fixme: use OF */
+#define RAM_END         (512<<20) // Fixme: use OF */
+#define ONE_MB          0x100000
 
 static char *avail_ram;
 static char *begin_avail, *end_avail;
@@ -32,6 +33,7 @@ static unsigned int heap_use;
 static unsigned int heap_max;
 
 extern char _start[];
+extern char _end[];
 extern char _vmlinux_start[];
 extern char _vmlinux_end[];
 extern char _initrd_start[];
@@ -58,13 +60,13 @@ typedef void (*kernel_entry_t)( unsigned long,
 
 #undef DEBUG
 
-static unsigned long claim_base = PROG_START;
+static unsigned long claim_base;
 
 static unsigned long try_claim(unsigned long size)
 {
         unsigned long addr = 0;
 
-        for(; claim_base < RAM_END; claim_base += 0x100000) {
+        for(; claim_base < RAM_END; claim_base += ONE_MB) {
 #ifdef DEBUG
                 printf("    trying: 0x%08lx\n\r", claim_base);
 #endif
@@ -95,7 +97,26 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
         if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
                 exit();
 
-        printf("\n\rzImage starting: loaded at 0x%x\n\r", (unsigned)_start);
+        printf("\n\rzImage starting: loaded at 0x%lx\n\r", (unsigned long) _start);
+
+        /*
+         * The first available claim_base must be above the end of the
+         * the loaded kernel wrapper file (_start to _end includes the
+         * initrd image if it is present) and rounded up to a nice
+         * 1 MB boundary for good measure.
+         */
+
+        claim_base = _ALIGN_UP((unsigned long)_end, ONE_MB);
+
+#if defined(PROG_START)
+        /*
+         * Maintain a "magic" minimum address. This keeps some older
+         * firmware platforms running.
+         */
+
+        if (claim_base < PROG_START)
+                claim_base = PROG_START;
+#endif
 
         /*
          * Now we try to claim some memory for the kernel itself
@@ -105,7 +126,7 @@ void start(unsigned long a1, unsigned long a2, void *promptr)
          * size... In practice we add 1Mb, that is enough, but we should really
          * consider fixing the Makefile to put a _raw_ kernel in there !
          */
-        vmlinux_memsize += 0x100000;
+        vmlinux_memsize += ONE_MB;
         printf("Allocating 0x%lx bytes for kernel ...\n\r", vmlinux_memsize);
         vmlinux.addr = try_claim(vmlinux_memsize);
         if (vmlinux.addr == 0) {
diff --git a/arch/ppc64/kernel/bpa_iic.c b/arch/ppc64/kernel/bpa_iic.c
index c8f3dc3fad70..0aaa878e19d3 100644
--- a/arch/ppc64/kernel/bpa_iic.c
+++ b/arch/ppc64/kernel/bpa_iic.c
@@ -205,6 +205,18 @@ static struct iic_regs __iomem *find_iic(int cpu)
 }
 
 #ifdef CONFIG_SMP
+
+/* Use the highest interrupt priorities for IPI */
+static inline int iic_ipi_to_irq(int ipi)
+{
+        return IIC_IPI_OFFSET + IIC_NUM_IPIS - 1 - ipi;
+}
+
+static inline int iic_irq_to_ipi(int irq)
+{
+        return IIC_NUM_IPIS - 1 - (irq - IIC_IPI_OFFSET);
+}
+
 void iic_setup_cpu(void)
 {
         out_be64(&__get_cpu_var(iic).regs->prio, 0xff);
@@ -212,18 +224,20 @@ void iic_setup_cpu(void)
 
 void iic_cause_IPI(int cpu, int mesg)
 {
-        out_be64(&per_cpu(iic, cpu).regs->generate, mesg);
+        out_be64(&per_cpu(iic, cpu).regs->generate, (IIC_NUM_IPIS - 1 - mesg) << 4);
 }
 
 static irqreturn_t iic_ipi_action(int irq, void *dev_id, struct pt_regs *regs)
 {
-
-        smp_message_recv(irq - IIC_IPI_OFFSET, regs);
+        smp_message_recv(iic_irq_to_ipi(irq), regs);
         return IRQ_HANDLED;
 }
 
-static void iic_request_ipi(int irq, const char *name)
+static void iic_request_ipi(int ipi, const char *name)
 {
+        int irq;
+
+        irq = iic_ipi_to_irq(ipi);
         /* IPIs are marked SA_INTERRUPT as they must run with irqs
          * disabled */
         get_irq_desc(irq)->handler = &iic_pic;
@@ -233,10 +247,10 @@ static void iic_request_ipi(int irq, const char *name)
 
 void iic_request_IPIs(void)
 {
-        iic_request_ipi(IIC_IPI_OFFSET + PPC_MSG_CALL_FUNCTION, "IPI-call");
-        iic_request_ipi(IIC_IPI_OFFSET + PPC_MSG_RESCHEDULE, "IPI-resched");
+        iic_request_ipi(PPC_MSG_CALL_FUNCTION, "IPI-call");
+        iic_request_ipi(PPC_MSG_RESCHEDULE, "IPI-resched");
 #ifdef CONFIG_DEBUGGER
-        iic_request_ipi(IIC_IPI_OFFSET + PPC_MSG_DEBUGGER_BREAK, "IPI-debug");
+        iic_request_ipi(PPC_MSG_DEBUGGER_BREAK, "IPI-debug");
 #endif /* CONFIG_DEBUGGER */
 }
 #endif /* CONFIG_SMP */
diff --git a/arch/ppc64/kernel/eeh.c b/arch/ppc64/kernel/eeh.c
index 4c857a6516fc..ba93fd731222 100644
--- a/arch/ppc64/kernel/eeh.c
+++ b/arch/ppc64/kernel/eeh.c
@@ -254,6 +254,7 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
 static void __pci_addr_cache_insert_device(struct pci_dev *dev)
 {
         struct device_node *dn;
+        struct pci_dn *pdn;
         int i;
         int inserted = 0;
 
@@ -265,8 +266,9 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
         }
 
         /* Skip any devices for which EEH is not enabled. */
-        if (!(dn->eeh_mode & EEH_MODE_SUPPORTED) ||
-            dn->eeh_mode & EEH_MODE_NOCHECK) {
+        pdn = dn->data;
+        if (!(pdn->eeh_mode & EEH_MODE_SUPPORTED) ||
+            pdn->eeh_mode & EEH_MODE_NOCHECK) {
 #ifdef DEBUG
                 printk(KERN_INFO "PCI: skip building address cache for=%s\n",
                        pci_name(dev));
@@ -415,6 +417,7 @@ int eeh_unregister_notifier(struct notifier_block *nb)
 static int read_slot_reset_state(struct device_node *dn, int rets[])
 {
         int token, outputs;
+        struct pci_dn *pdn = dn->data;
 
         if (ibm_read_slot_reset_state2 != RTAS_UNKNOWN_SERVICE) {
                 token = ibm_read_slot_reset_state2;
@@ -424,8 +427,8 @@ static int read_slot_reset_state(struct device_node *dn, int rets[])
                 outputs = 3;
         }
 
-        return rtas_call(token, 3, outputs, rets, dn->eeh_config_addr,
-                         BUID_HI(dn->phb->buid), BUID_LO(dn->phb->buid));
+        return rtas_call(token, 3, outputs, rets, pdn->eeh_config_addr,
+                         BUID_HI(pdn->phb->buid), BUID_LO(pdn->phb->buid));
 }
 
 /**
@@ -534,6 +537,7 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
         unsigned long flags;
         int rc, reset_state;
         struct eeh_event  *event;
+        struct pci_dn *pdn;
 
         __get_cpu_var(total_mmio_ffs)++;
 
@@ -542,14 +546,15 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
 
         if (!dn)
                 return 0;
+        pdn = dn->data;
 
         /* Access to IO BARs might get this far and still not want checking. */
-        if (!(dn->eeh_mode & EEH_MODE_SUPPORTED) ||
-            dn->eeh_mode & EEH_MODE_NOCHECK) {
+        if (!pdn->eeh_capable || !(pdn->eeh_mode & EEH_MODE_SUPPORTED) ||
+            pdn->eeh_mode & EEH_MODE_NOCHECK) {
                 return 0;
         }
 
-        if (!dn->eeh_config_addr) {
+        if (!pdn->eeh_config_addr) {
                 return 0;
         }
 
@@ -557,7 +562,7 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
          * If we already have a pending isolation event for this
          * slot, we know it's bad already, we don't need to check...
          */
-        if (dn->eeh_mode & EEH_MODE_ISOLATED) {
+        if (pdn->eeh_mode & EEH_MODE_ISOLATED) {
                 atomic_inc(&eeh_fail_count);
                 if (atomic_read(&eeh_fail_count) >= EEH_MAX_FAILS) {
                         /* re-read the slot reset state */
@@ -582,7 +587,7 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
         }
 
         /* prevent repeated reports of this failure */
-        dn->eeh_mode |= EEH_MODE_ISOLATED;
+        pdn->eeh_mode |= EEH_MODE_ISOLATED;
 
         reset_state = rets[0];
 
@@ -590,9 +595,9 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
         memset(slot_errbuf, 0, eeh_error_buf_size);
 
         rc = rtas_call(ibm_slot_error_detail,
-                       8, 1, NULL, dn->eeh_config_addr,
-                       BUID_HI(dn->phb->buid),
-                       BUID_LO(dn->phb->buid), NULL, 0,
+                       8, 1, NULL, pdn->eeh_config_addr,
+                       BUID_HI(pdn->phb->buid),
+                       BUID_LO(pdn->phb->buid), NULL, 0,
                        virt_to_phys(slot_errbuf),
                        eeh_error_buf_size,
                        1 /* Temporary Error */);
@@ -679,8 +684,9 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
         u32 *device_id = (u32 *)get_property(dn, "device-id", NULL);
         u32 *regs;
         int enable;
+        struct pci_dn *pdn = dn->data;
 
-        dn->eeh_mode = 0;
+        pdn->eeh_mode = 0;
 
         if (status && strcmp(status, "ok") != 0)
                 return NULL;    /* ignore devices with bad status */
@@ -691,7 +697,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 
         /* There is nothing to check on PCI to ISA bridges */
         if (dn->type && !strcmp(dn->type, "isa")) {
-                dn->eeh_mode |= EEH_MODE_NOCHECK;
+                pdn->eeh_mode |= EEH_MODE_NOCHECK;
                 return NULL;
         }
 
@@ -708,7 +714,7 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
                 enable = 0;
 
         if (!enable)
-                dn->eeh_mode |= EEH_MODE_NOCHECK;
+                pdn->eeh_mode |= EEH_MODE_NOCHECK;
 
         /* Ok... see if this device supports EEH.  Some do, some don't,
          * and the only way to find out is to check each and every one. */
@@ -721,8 +727,8 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
                                 EEH_ENABLE);
                 if (ret == 0) {
                         eeh_subsystem_enabled = 1;
-                        dn->eeh_mode |= EEH_MODE_SUPPORTED;
-                        dn->eeh_config_addr = regs[0];
+                        pdn->eeh_mode |= EEH_MODE_SUPPORTED;
+                        pdn->eeh_config_addr = regs[0];
 #ifdef DEBUG
                         printk(KERN_DEBUG "EEH: %s: eeh enabled\n", dn->full_name);
 #endif
@@ -730,10 +736,11 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
 
                         /* This device doesn't support EEH, but it may have an
                          * EEH parent, in which case we mark it as supported. */
-                        if (dn->parent && (dn->parent->eeh_mode & EEH_MODE_SUPPORTED)) {
+                        if (dn->parent && dn->parent->data
+                            && (PCI_DN(dn->parent)->eeh_mode & EEH_MODE_SUPPORTED)) {
                                 /* Parent supports EEH. */
-                                dn->eeh_mode |= EEH_MODE_SUPPORTED;
-                                dn->eeh_config_addr = dn->parent->eeh_config_addr;
+                                pdn->eeh_mode |= EEH_MODE_SUPPORTED;
+                                pdn->eeh_config_addr = PCI_DN(dn->parent)->eeh_config_addr;
                                 return NULL;
                         }
                 }
@@ -790,11 +797,13 @@ void __init eeh_init(void)
         for (phb = of_find_node_by_name(NULL, "pci"); phb;
              phb = of_find_node_by_name(phb, "pci")) {
                 unsigned long buid;
+                struct pci_dn *pci;
 
                 buid = get_phb_buid(phb);
-                if (buid == 0)
+                if (buid == 0 || phb->data == NULL)
                         continue;
 
+                pci = phb->data;
                 info.buid_lo = BUID_LO(buid);
                 info.buid_hi = BUID_HI(buid);
                 traverse_pci_devices(phb, early_enable_eeh, &info);
@@ -823,9 +832,9 @@ void eeh_add_device_early(struct device_node *dn)
         struct pci_controller *phb;
         struct eeh_early_enable_info info;
 
-        if (!dn)
+        if (!dn || !dn->data)
                 return;
-        phb = dn->phb;
+        phb = PCI_DN(dn)->phb;
         if (NULL == phb || 0 == phb->buid) {
                 printk(KERN_WARNING "EEH: Expected buid but found none\n");
                 return;
diff --git a/arch/ppc64/kernel/iomap.c b/arch/ppc64/kernel/iomap.c
index 09a3062309e7..6160c8dbb7c5 100644
--- a/arch/ppc64/kernel/iomap.c
+++ b/arch/ppc64/kernel/iomap.c
@@ -22,13 +22,23 @@ unsigned int fastcall ioread16(void __iomem *addr)
 {
         return readw(addr);
 }
+unsigned int fastcall ioread16be(void __iomem *addr)
+{
+        return in_be16(addr);
+}
 unsigned int fastcall ioread32(void __iomem *addr)
 {
         return readl(addr);
 }
+unsigned int fastcall ioread32be(void __iomem *addr)
+{
+        return in_be32(addr);
+}
 EXPORT_SYMBOL(ioread8);
 EXPORT_SYMBOL(ioread16);
+EXPORT_SYMBOL(ioread16be);
 EXPORT_SYMBOL(ioread32);
+EXPORT_SYMBOL(ioread32be);
 
 void fastcall iowrite8(u8 val, void __iomem *addr)
 {
@@ -38,13 +48,23 @@ void fastcall iowrite16(u16 val, void __iomem *addr)
 {
         writew(val, addr);
 }
+void fastcall iowrite16be(u16 val, void __iomem *addr)
+{
+        out_be16(addr, val);
+}
 void fastcall iowrite32(u32 val, void __iomem *addr)
 {
         writel(val, addr);
 }
+void fastcall iowrite32be(u32 val, void __iomem *addr)
+{
+        out_be32(addr, val);
+}
 EXPORT_SYMBOL(iowrite8);
 EXPORT_SYMBOL(iowrite16);
+EXPORT_SYMBOL(iowrite16be);
 EXPORT_SYMBOL(iowrite32);
+EXPORT_SYMBOL(iowrite32be);
 
 /*
  * These are the "repeat read/write" functions. Note the
diff --git a/arch/ppc64/kernel/iommu.c b/arch/ppc64/kernel/iommu.c
index 845eebd1e28d..9032b6bfe036 100644
--- a/arch/ppc64/kernel/iommu.c
+++ b/arch/ppc64/kernel/iommu.c
@@ -438,7 +438,8 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl)
 
 void iommu_free_table(struct device_node *dn)
 {
-        struct iommu_table *tbl = dn->iommu_table;
+        struct pci_dn *pdn = dn->data;
+        struct iommu_table *tbl = pdn->iommu_table;
         unsigned long bitmap_sz, i;
         unsigned int order;
 
diff --git a/arch/ppc64/kernel/maple_pci.c b/arch/ppc64/kernel/maple_pci.c
index 53993999b265..5a8b4d8c2dd6 100644
--- a/arch/ppc64/kernel/maple_pci.c
+++ b/arch/ppc64/kernel/maple_pci.c
@@ -447,9 +447,9 @@ void __init maple_pci_init(void)
          */
         if (u3_agp) {
                 struct device_node *np = u3_agp->arch_data;
-                np->busno = 0xf0;
+                PCI_DN(np)->busno = 0xf0;
                 for (np = np->child; np; np = np->sibling)
-                        np->busno = 0xf0;
+                        PCI_DN(np)->busno = 0xf0;
         }
 
         /* Tell pci.c to use the common resource allocation mecanism */
diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S
index 6d860c1d9fa0..c047663eb48d 100644
--- a/arch/ppc64/kernel/misc.S
+++ b/arch/ppc64/kernel/misc.S
@@ -1431,9 +1431,9 @@ _GLOBAL(sys_call_table)
         .llong .sys_ni_syscall          /* 195 - 32bit only stat64 */
         .llong .sys_ni_syscall          /* 32bit only lstat64 */
         .llong .sys_ni_syscall          /* 32bit only fstat64 */
-        .llong .sys_ni_syscall          /* 32bit only pciconfig_read */
-        .llong .sys_ni_syscall          /* 32bit only pciconfig_write */
-        .llong .sys_ni_syscall          /* 32bit only pciconfig_iobase */
+        .llong .sys_pciconfig_read
+        .llong .sys_pciconfig_write
+        .llong .sys_pciconfig_iobase    /* 200 - pciconfig_iobase */
         .llong .sys_ni_syscall          /* reserved for MacOnLinux */
         .llong .sys_getdents64
         .llong .sys_pivot_root
diff --git a/arch/ppc64/kernel/pSeries_iommu.c b/arch/ppc64/kernel/pSeries_iommu.c
index 9d5e1e7fc389..f0fd7fbd6531 100644
--- a/arch/ppc64/kernel/pSeries_iommu.c
+++ b/arch/ppc64/kernel/pSeries_iommu.c
@@ -295,7 +295,7 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
                                       struct iommu_table *tbl,
                                       unsigned int *dma_window)
 {
-        tbl->it_busno  = dn->bussubno;
+        tbl->it_busno  = PCI_DN(dn)->bussubno;
 
         /* TODO: Parse field size properties properly. */
         tbl->it_size   = (((unsigned long)dma_window[4] << 32) |
@@ -311,6 +311,7 @@ static void iommu_table_setparms_lpar(struct pci_controller *phb,
 static void iommu_bus_setup_pSeries(struct pci_bus *bus)
 {
         struct device_node *dn, *pdn;
+        struct pci_dn *pci;
         struct iommu_table *tbl;
 
         DBG("iommu_bus_setup_pSeries, bus %p, bus->self %p\n", bus, bus->self);
@@ -325,6 +326,7 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
          */
 
         dn = pci_bus_to_OF_node(bus);
+        pci = dn->data;
 
         if (!bus->self) {
                 /* Root bus */
@@ -341,18 +343,18 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
                                  * alltogether. This leaves 768MB for the window.
                                  */
                                 DBG("PHB has io-hole, reserving 256MB\n");
-                                dn->phb->dma_window_size = 3 << 28;
-                                dn->phb->dma_window_base_cur = 1 << 28;
+                                pci->phb->dma_window_size = 3 << 28;
+                                pci->phb->dma_window_base_cur = 1 << 28;
                         } else {
                                 /* 1GB window by default */
-                                dn->phb->dma_window_size = 1 << 30;
-                                dn->phb->dma_window_base_cur = 0;
+                                pci->phb->dma_window_size = 1 << 30;
+                                pci->phb->dma_window_base_cur = 0;
                         }
 
                         tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
 
-                        iommu_table_setparms(dn->phb, dn, tbl);
-                        dn->iommu_table = iommu_init_table(tbl);
+                        iommu_table_setparms(pci->phb, dn, tbl);
+                        pci->iommu_table = iommu_init_table(tbl);
                 } else {
                         /* Do a 128MB table at root. This is used for the IDE
                          * controller on some SMP-mode POWER4 machines. It
@@ -363,16 +365,16 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
                          * Allocate at offset 128MB to avoid having to deal
                          * with ISA holes; 128MB table for IDE is plenty.
                          */
-                        dn->phb->dma_window_size = 1 << 27;
-                        dn->phb->dma_window_base_cur = 1 << 27;
+                        pci->phb->dma_window_size = 1 << 27;
+                        pci->phb->dma_window_base_cur = 1 << 27;
 
                         tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
 
-                        iommu_table_setparms(dn->phb, dn, tbl);
-                        dn->iommu_table = iommu_init_table(tbl);
+                        iommu_table_setparms(pci->phb, dn, tbl);
+                        pci->iommu_table = iommu_init_table(tbl);
 
                         /* All child buses have 256MB tables */
-                        dn->phb->dma_window_size = 1 << 28;
+                        pci->phb->dma_window_size = 1 << 28;
                 }
         } else {
                 pdn = pci_bus_to_OF_node(bus->parent);
@@ -386,12 +388,12 @@ static void iommu_bus_setup_pSeries(struct pci_bus *bus)
 
                         tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
 
-                        iommu_table_setparms(dn->phb, dn, tbl);
+                        iommu_table_setparms(pci->phb, dn, tbl);
 
-                        dn->iommu_table = iommu_init_table(tbl);
+                        pci->iommu_table = iommu_init_table(tbl);
                 } else {
                         /* Lower than first child or under python, use parent table */
-                        dn->iommu_table = pdn->iommu_table;
+                        pci->iommu_table = PCI_DN(pdn)->iommu_table;
                 }
         }
 }
@@ -401,6 +403,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
 {
         struct iommu_table *tbl;
         struct device_node *dn, *pdn;
+        struct pci_dn *ppci;
         unsigned int *dma_window = NULL;
 
         DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus, bus->self);
@@ -419,22 +422,24 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus)
                 return;
         }
 
-        if (!pdn->iommu_table) {
+        ppci = pdn->data;
+        if (!ppci->iommu_table) {
                 /* Bussubno hasn't been copied yet.
                  * Do it now because iommu_table_setparms_lpar needs it.
                  */
-                pdn->bussubno = bus->number;
+
+                ppci->bussubno = bus->number;
 
                 tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table),
                                                     GFP_KERNEL);
         
-                iommu_table_setparms_lpar(pdn->phb, pdn, tbl, dma_window);
+                iommu_table_setparms_lpar(ppci->phb, pdn, tbl, dma_window);
 
-                pdn->iommu_table = iommu_init_table(tbl);
+                ppci->iommu_table = iommu_init_table(tbl);
         }
 
         if (pdn != dn)
-                dn->iommu_table = pdn->iommu_table;
+                PCI_DN(dn)->iommu_table = ppci->iommu_table;
 }
 
 
@@ -449,11 +454,11 @@ static void iommu_dev_setup_pSeries(struct pci_dev *dev)
          */
         mydn = dn = pci_device_to_OF_node(dev);
 
-        while (dn && dn->iommu_table == NULL)
+        while (dn && dn->data && PCI_DN(dn)->iommu_table == NULL)
                 dn = dn->parent;
 
-        if (dn) {
-                mydn->iommu_table = dn->iommu_table;
+        if (dn && dn->data) {
+                PCI_DN(mydn)->iommu_table = PCI_DN(dn)->iommu_table;
         } else {
                 DBG("iommu_dev_setup_pSeries, dev %p (%s) has no iommu table\n", dev, dev->pretty_name);
         }
@@ -463,10 +468,11 @@ static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long acti
 {
         int err = NOTIFY_OK;
         struct device_node *np = node;
+        struct pci_dn *pci = np->data;
 
         switch (action) {
         case PSERIES_RECONFIG_REMOVE:
-                if (np->iommu_table &&
+                if (pci->iommu_table &&
                     get_property(np, "ibm,dma-window", NULL))
                         iommu_free_table(np);
                 break;
@@ -486,6 +492,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
         struct device_node *pdn, *dn;
         struct iommu_table *tbl;
         int *dma_window = NULL;
+        struct pci_dn *pci;
 
         DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, dev->pretty_name);
 
@@ -497,8 +504,10 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
          */
         dn = pci_device_to_OF_node(dev);
 
-        for (pdn = dn; pdn && !pdn->iommu_table; pdn = pdn->parent) {
-                dma_window = (unsigned int *)get_property(pdn, "ibm,dma-window", NULL);
+        for (pdn = dn; pdn && pdn->data && !PCI_DN(pdn)->iommu_table;
+             pdn = pdn->parent) {
+                dma_window = (unsigned int *)
+                        get_property(pdn, "ibm,dma-window", NULL);
                 if (dma_window)
                         break;
         }
@@ -515,20 +524,21 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev)
                 DBG("Found DMA window, allocating table\n");
         }
 
-        if (!pdn->iommu_table) {
+        pci = pdn->data;
+        if (!pci->iommu_table) {
                 /* iommu_table_setparms_lpar needs bussubno. */
-                pdn->bussubno = pdn->phb->bus->number;
+                pci->bussubno = pci->phb->bus->number;
 
                 tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table),
                                                     GFP_KERNEL);
 
-                iommu_table_setparms_lpar(pdn->phb, pdn, tbl, dma_window);
+                iommu_table_setparms_lpar(pci->phb, pdn, tbl, dma_window);
 
-                pdn->iommu_table = iommu_init_table(tbl);
+                pci->iommu_table = iommu_init_table(tbl);
         }
 
         if (pdn != dn)
-                dn->iommu_table = pdn->iommu_table;
+                PCI_DN(dn)->iommu_table = pci->iommu_table;
 }
 
 static void iommu_bus_setup_null(struct pci_bus *b) { }
diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c
index b5ca7d8347e2..8447dcc2c2b3 100644
--- 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>
@@ -837,9 +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;
 }
@@ -982,3 +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;
+}
diff --git a/arch/ppc64/kernel/pci.h b/arch/ppc64/kernel/pci.h
index 26be78b13af1..5eb2cc320566 100644
--- a/arch/ppc64/kernel/pci.h
+++ b/arch/ppc64/kernel/pci.h
@@ -34,7 +34,6 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre,
 
 void pci_devs_phb_init(void);
 void pci_devs_phb_init_dynamic(struct pci_controller *phb);
-struct device_node *fetch_dev_dn(struct pci_dev *dev);
 
 /* PCI address cache management routines */
 void pci_addr_cache_insert_device(struct pci_dev *dev);
diff --git a/arch/ppc64/kernel/pci_dn.c b/arch/ppc64/kernel/pci_dn.c
index ec345462afc3..a86389d07d57 100644
--- a/arch/ppc64/kernel/pci_dn.c
+++ b/arch/ppc64/kernel/pci_dn.c
@@ -23,6 +23,8 @@
 #include <linux/pci.h>
 #include <linux/string.h>
 #include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/bootmem.h>
 
 #include <asm/io.h>
 #include <asm/prom.h>
@@ -40,16 +42,26 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data)
         struct pci_controller *phb = data;
         int *type = (int *)get_property(dn, "ibm,pci-config-space-type", NULL);
         u32 *regs;
-
-        dn->phb = phb;
+        struct pci_dn *pdn;
+
+        if (phb->is_dynamic)
+                pdn = kmalloc(sizeof(*pdn), GFP_KERNEL);
+        else
+                pdn = alloc_bootmem(sizeof(*pdn));
+        if (pdn == NULL)
+                return NULL;
+        memset(pdn, 0, sizeof(*pdn));
+        dn->data = pdn;
+        pdn->node = dn;
+        pdn->phb = phb;
         regs = (u32 *)get_property(dn, "reg", NULL);
         if (regs) {
                 /* First register entry is addr (00BBSS00)  */
-                dn->busno = (regs[0] >> 16) & 0xff;
-                dn->devfn = (regs[0] >> 8) & 0xff;
+                pdn->busno = (regs[0] >> 16) & 0xff;
+                pdn->devfn = (regs[0] >> 8) & 0xff;
         }
 
-        dn->pci_ext_config_space = (type && *type == 1);
+        pdn->pci_ext_config_space = (type && *type == 1);
         return NULL;
 }
 
@@ -112,10 +124,15 @@ void *traverse_pci_devices(struct device_node *start, traverse_func pre,
 void __devinit pci_devs_phb_init_dynamic(struct pci_controller *phb)
 {
         struct device_node * dn = (struct device_node *) phb->arch_data;
+        struct pci_dn *pdn;
 
         /* PHB nodes themselves must not match */
-        dn->devfn = dn->busno = -1;
-        dn->phb = phb;
+        update_dn_pci_info(dn, phb);
+        pdn = dn->data;
+        if (pdn) {
+                pdn->devfn = pdn->busno = -1;
+                pdn->phb = phb;
+        }
 
         /* Update dn->phb ptrs for new phb and children devices */
         traverse_pci_devices(dn, update_dn_pci_info, phb);
@@ -123,14 +140,17 @@ void __devinit pci_devs_phb_init_dynamic(struct pci_controller *phb)
 
 /*
  * Traversal func that looks for a <busno,devfcn> value.
- * If found, the device_node is returned (thus terminating the traversal).
+ * If found, the pci_dn is returned (thus terminating the traversal).
  */
 static void *is_devfn_node(struct device_node *dn, void *data)
 {
         int busno = ((unsigned long)data >> 8) & 0xff;
         int devfn = ((unsigned long)data) & 0xff;
+        struct pci_dn *pci = dn->data;
 
-        return ((devfn == dn->devfn) && (busno == dn->busno)) ? dn : NULL;
+        if (pci && (devfn == pci->devfn) && (busno == pci->busno))
+                return dn;
+        return NULL;
 }
 
 /*
@@ -149,13 +169,10 @@ static void *is_devfn_node(struct device_node *dn, void *data)
 struct device_node *fetch_dev_dn(struct pci_dev *dev)
 {
         struct device_node *orig_dn = dev->sysdata;
-        struct pci_controller *phb = orig_dn->phb; /* assume same phb as orig_dn */
-        struct device_node *phb_dn;
         struct device_node *dn;
         unsigned long searchval = (dev->bus->number << 8) | dev->devfn;
 
-        phb_dn = phb->arch_data;
-        dn = traverse_pci_devices(phb_dn, is_devfn_node, (void *)searchval);
+        dn = traverse_pci_devices(orig_dn, is_devfn_node, (void *)searchval);
         if (dn)
                 dev->sysdata = dn;
         return dn;
@@ -165,11 +182,13 @@ EXPORT_SYMBOL(fetch_dev_dn);
 static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
 {
         struct device_node *np = node;
+        struct pci_dn *pci;
         int err = NOTIFY_OK;
 
         switch (action) {
         case PSERIES_RECONFIG_ADD:
-                update_dn_pci_info(np, np->parent->phb);
+                pci = np->parent->data;
+                update_dn_pci_info(np, pci->phb);
                 break;
         default:
                 err = NOTIFY_DONE;
diff --git a/arch/ppc64/kernel/pci_iommu.c b/arch/ppc64/kernel/pci_iommu.c
index ef0a62b916be..14647e09c9cd 100644
--- a/arch/ppc64/kernel/pci_iommu.c
+++ b/arch/ppc64/kernel/pci_iommu.c
@@ -66,7 +66,7 @@ static inline struct iommu_table *devnode_table(struct device *dev)
 #endif /* CONFIG_PPC_ISERIES */
 
 #ifdef CONFIG_PPC_MULTIPLATFORM
-        return PCI_GET_DN(pdev)->iommu_table;
+        return PCI_DN(PCI_GET_DN(pdev))->iommu_table;
 #endif /* CONFIG_PPC_MULTIPLATFORM */
 }
 
diff --git a/arch/ppc64/kernel/pmac_feature.c b/arch/ppc64/kernel/pmac_feature.c
index 98ed2bccab1a..eb4e6c3f694d 100644
--- a/arch/ppc64/kernel/pmac_feature.c
+++ b/arch/ppc64/kernel/pmac_feature.c
@@ -674,6 +674,7 @@ void __init pmac_check_ht_link(void)
 #if 0 /* Disabled for now */
         u32     ufreq, freq, ucfg, cfg;
         struct device_node *pcix_node;
+        struct pci_dn *pdn;
         u8      px_bus, px_devfn;
         struct pci_controller *px_hose;
 
@@ -687,9 +688,10 @@ void __init pmac_check_ht_link(void)
                 printk("No PCI-X bridge found\n");
                 return;
         }
-        px_hose = pcix_node->phb;
-        px_bus = pcix_node->busno;
-        px_devfn = pcix_node->devfn;
+        pdn = pcix_node->data;
+        px_hose = pdn->phb;
+        px_bus = pdn->busno;
+        px_devfn = pdn->devfn;
         
         early_read_config_dword(px_hose, px_bus, px_devfn, 0xc4, &cfg);
         early_read_config_dword(px_hose, px_bus, px_devfn, 0xcc, &freq);
diff --git a/arch/ppc64/kernel/pmac_pci.c b/arch/ppc64/kernel/pmac_pci.c
index 71fe911ad183..d37bff2d7d40 100644
--- a/arch/ppc64/kernel/pmac_pci.c
+++ b/arch/ppc64/kernel/pmac_pci.c
@@ -242,7 +242,7 @@ static int u3_ht_skip_device(struct pci_controller *hose,
         else
                 busdn = hose->arch_data;
         for (dn = busdn->child; dn; dn = dn->sibling)
-                if (dn->devfn == devfn)
+                if (dn->data && PCI_DN(dn)->devfn == devfn)
                         break;
         if (dn == NULL)
                 return -1;
@@ -746,9 +746,9 @@ void __init pmac_pci_init(void)
          */
         if (u3_agp) {
                 struct device_node *np = u3_agp->arch_data;
-                np->busno = 0xf0;
+                PCI_DN(np)->busno = 0xf0;
                 for (np = np->child; np; np = np->sibling)
-                        np->busno = 0xf0;
+                        PCI_DN(np)->busno = 0xf0;
         }
 
         pmac_check_ht_link();
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index 6ad5a8467f87..7035deb6de92 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -1733,6 +1733,7 @@ static void of_node_release(struct kref *kref)
         kfree(node->intrs);
         kfree(node->addrs);
         kfree(node->full_name);
+        kfree(node->data);
         kfree(node);
 }
 
diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c
index 1dccadaddd1d..4a9719b48abe 100644
--- a/arch/ppc64/kernel/rtas_pci.c
+++ b/arch/ppc64/kernel/rtas_pci.c
@@ -48,7 +48,7 @@ static int write_pci_config;
 static int ibm_read_pci_config;
 static int ibm_write_pci_config;
 
-static int config_access_valid(struct device_node *dn, int where)
+static int config_access_valid(struct pci_dn *dn, int where)
 {
         if (where < 256)
                 return 1;
@@ -78,15 +78,17 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va
         int returnval = -1;
         unsigned long buid, addr;
         int ret;
+        struct pci_dn *pdn;
 
-        if (!dn)
+        if (!dn || !dn->data)
                 return PCIBIOS_DEVICE_NOT_FOUND;
-        if (!config_access_valid(dn, where))
+        pdn = dn->data;
+        if (!config_access_valid(pdn, where))
                 return PCIBIOS_BAD_REGISTER_NUMBER;
 
-        addr = ((where & 0xf00) << 20) | (dn->busno << 16) |
-                (dn->devfn << 8) | (where & 0xff);
-        buid = dn->phb->buid;
+        addr = ((where & 0xf00) << 20) | (pdn->busno << 16) |
+                (pdn->devfn << 8) | (where & 0xff);
+        buid = pdn->phb->buid;
         if (buid) {
                 ret = rtas_call(ibm_read_pci_config, 4, 2, &returnval,
                                 addr, buid >> 32, buid & 0xffffffff, size);
@@ -98,8 +100,8 @@ static int rtas_read_config(struct device_node *dn, int where, int size, u32 *va
         if (ret)
                 return PCIBIOS_DEVICE_NOT_FOUND;
 
-        if (returnval == EEH_IO_ERROR_VALUE(size)
-            && eeh_dn_check_failure (dn, NULL))
+        if (returnval == EEH_IO_ERROR_VALUE(size) &&
+            eeh_dn_check_failure (dn, NULL))
                 return PCIBIOS_DEVICE_NOT_FOUND;
 
         return PCIBIOS_SUCCESSFUL;
@@ -118,24 +120,28 @@ static int rtas_pci_read_config(struct pci_bus *bus,
 
         /* Search only direct children of the bus */
         for (dn = busdn->child; dn; dn = dn->sibling)
-                if (dn->devfn == devfn && of_device_available(dn))
+                if (dn->data && PCI_DN(dn)->devfn == devfn
+                    && of_device_available(dn))
                         return rtas_read_config(dn, where, size, val);
+
         return PCIBIOS_DEVICE_NOT_FOUND;
 }
 
-static int rtas_write_config(struct device_node *dn, int where, int size, u32 val)
+int rtas_write_config(struct device_node *dn, int where, int size, u32 val)
 {
         unsigned long buid, addr;
         int ret;
+        struct pci_dn *pdn;
 
-        if (!dn)
+        if (!dn || !dn->data)
                 return PCIBIOS_DEVICE_NOT_FOUND;
-        if (!config_access_valid(dn, where))
+        pdn = dn->data;
+        if (!config_access_valid(pdn, where))
                 return PCIBIOS_BAD_REGISTER_NUMBER;
 
-        addr = ((where & 0xf00) << 20) | (dn->busno << 16) |
-                (dn->devfn << 8) | (where & 0xff);
-        buid = dn->phb->buid;
+        addr = ((where & 0xf00) << 20) | (pdn->busno << 16) |
+                (pdn->devfn << 8) | (where & 0xff);
+        buid = pdn->phb->buid;
         if (buid) {
                 ret = rtas_call(ibm_write_pci_config, 5, 1, NULL, addr, buid >> 32, buid & 0xffffffff, size, (ulong) val);
         } else {
@@ -161,7 +167,8 @@ static int rtas_pci_write_config(struct pci_bus *bus,
 
         /* Search only direct children of the bus */
         for (dn = busdn->child; dn; dn = dn->sibling)
-                if (dn->devfn == devfn && of_device_available(dn))
+                if (dn->data && PCI_DN(dn)->devfn == devfn
+                    && of_device_available(dn))
                         return rtas_write_config(dn, where, size, val);
         return PCIBIOS_DEVICE_NOT_FOUND;
 }
diff --git a/arch/ppc64/kernel/sys_ppc32.c b/arch/ppc64/kernel/sys_ppc32.c
index 214914a95a50..e93c13458910 100644
--- a/arch/ppc64/kernel/sys_ppc32.c
+++ b/arch/ppc64/kernel/sys_ppc32.c
@@ -708,62 +708,9 @@ asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubu
                                    compat_ptr(ubuf));
 }
 
-#define IOBASE_BRIDGE_NUMBER    0
-#define IOBASE_MEMORY           1
-#define IOBASE_IO               2
-#define IOBASE_ISA_IO           3
-#define IOBASE_ISA_MEM          4
-
 asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
 {
-#ifdef CONFIG_PCI
-        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 = 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;
-        }
-#endif  /* CONFIG_PCI */
-        return -EOPNOTSUPP;
+        return sys_pciconfig_iobase(which, in_bus, in_devfn);
 }
 
 
diff --git a/arch/ppc64/kernel/syscalls.c b/arch/ppc64/kernel/syscalls.c
index a8cbb202b8cd..05f16633bd2c 100644
--- a/arch/ppc64/kernel/syscalls.c
+++ b/arch/ppc64/kernel/syscalls.c
@@ -46,10 +46,6 @@
 
 extern unsigned long wall_jiffies;
 
-void
-check_bugs(void)
-{
-}
 
 /*
  * sys_ipc() is the de-multiplexer for the SysV IPC calls..
diff --git a/arch/ppc64/kernel/u3_iommu.c b/arch/ppc64/kernel/u3_iommu.c
index b6e3bca4102d..41ea09cb9ac7 100644
--- a/arch/ppc64/kernel/u3_iommu.c
+++ b/arch/ppc64/kernel/u3_iommu.c
@@ -276,7 +276,7 @@ static void iommu_dev_setup_u3(struct pci_dev *dev)
         dn = pci_device_to_OF_node(dev);
 
         if (dn)
-                dn->iommu_table = &iommu_table_u3;
+                PCI_DN(dn)->iommu_table = &iommu_table_u3;
 }
 
 static void iommu_bus_setup_u3(struct pci_bus *bus)
@@ -291,7 +291,7 @@ static void iommu_bus_setup_u3(struct pci_bus *bus)
         dn = pci_bus_to_OF_node(bus);
 
         if (dn)
-                dn->iommu_table = &iommu_table_u3;
+                PCI_DN(dn)->iommu_table = &iommu_table_u3;
 }
 
 static void iommu_dev_setup_null(struct pci_dev *dev) { }
diff --git a/arch/ppc64/kernel/udbg.c b/arch/ppc64/kernel/udbg.c
index ed6766e21f5a..d49c3613c8ec 100644
--- a/arch/ppc64/kernel/udbg.c
+++ b/arch/ppc64/kernel/udbg.c
@@ -158,14 +158,20 @@ static struct console udbg_console = {
         .index  = -1,
 };
 
+static int early_console_initialized;
+
 void __init disable_early_printk(void)
 {
+        if (!early_console_initialized)
+                return;
         unregister_console(&udbg_console);
+        early_console_initialized = 0;
 }
 
 /* called by setup_system */
 void register_early_udbg_console(void)
 {
+        early_console_initialized = 1;
         register_console(&udbg_console);
 }
 
diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c
index a14ab87df491..c2157c9c3acb 100644
--- a/arch/ppc64/mm/init.c
+++ b/arch/ppc64/mm/init.c
@@ -554,12 +554,12 @@ void __init do_init_bootmem(void)
          * present.
          */
         for (i=0; i < lmb.memory.cnt; i++)
-                free_bootmem(lmb_start_pfn(&lmb.memory, i),
+                free_bootmem(lmb.memory.region[i].base,
                              lmb_size_bytes(&lmb.memory, i));
 
         /* reserve the sections we're already using */
         for (i=0; i < lmb.reserved.cnt; i++)
-                reserve_bootmem(lmb_start_pfn(&lmb.reserved, i),
+                reserve_bootmem(lmb.reserved.region[i].base,
                                 lmb_size_bytes(&lmb.reserved, i));
 
         for (i=0; i < lmb.memory.cnt; i++)