Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (144 commits)
  powerpc/44x: Support 16K/64K base page sizes on 44x
  powerpc: Force memory size to be a multiple of PAGE_SIZE
  powerpc/32: Wire up the trampoline code for kdump
  powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M
  powerpc/32: Allow __ioremap on RAM addresses for kdump kernel
  powerpc/32: Setup OF properties for kdump
  powerpc/32/kdump: Implement crash_setup_regs() using ppc_save_regs()
  powerpc: Prepare xmon_save_regs for use with kdump
  powerpc: Remove default kexec/crash_kernel ops assignments
  powerpc: Make default kexec/crash_kernel ops implicit
  powerpc: Setup OF properties for ppc32 kexec
  powerpc/pseries: Fix cpu hotplug
  powerpc: Fix KVM build on ppc440
  powerpc/cell: add QPACE as a separate Cell platform
  powerpc/cell: fix build breakage with CONFIG_SPUFS disabled
  powerpc/mpc5200: fix error paths in PSC UART probe function
  powerpc/mpc5200: add rts/cts handling in PSC UART driver
  powerpc/mpc5200: Make PSC UART driver update serial errors counters
  powerpc/mpc5200: Remove obsolete code from mpc5200 MDIO driver
  powerpc/mpc5200: Add MDMA/UDMA support to MPC5200 ATA driver
  ...

Fix trivial conflict in drivers/char/Makefile as per Paul's directions

7 files changed, 174 insertions, 114 deletions

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 97619fd51e39..ddc2a307cd50 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -54,7 +54,7 @@ config PPC_SMLPAR
 
 config CMM
         tristate "Collaborative memory management"
-        depends on PPC_SMLPAR
+        depends on PPC_SMLPAR && !CRASH_DUMP
         default y
         help
           Select this option, if you want to enable the kernel interface
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 5cd4d2761620..6567439fe78d 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -28,6 +28,7 @@
 #include <linux/kthread.h>
 #include <linux/module.h>
 #include <linux/oom.h>
+#include <linux/reboot.h>
 #include <linux/sched.h>
 #include <linux/stringify.h>
 #include <linux/swap.h>
@@ -384,6 +385,26 @@ static void cmm_unregister_sysfs(struct sys_device *sysdev)
 }
 
 /**
+ * cmm_reboot_notifier - Make sure pages are not still marked as "loaned"
+ *
+ **/
+static int cmm_reboot_notifier(struct notifier_block *nb,
+                               unsigned long action, void *unused)
+{
+        if (action == SYS_RESTART) {
+                if (cmm_thread_ptr)
+                        kthread_stop(cmm_thread_ptr);
+                cmm_thread_ptr = NULL;
+                cmm_free_pages(loaned_pages);
+        }
+        return NOTIFY_DONE;
+}
+
+static struct notifier_block cmm_reboot_nb = {
+        .notifier_call = cmm_reboot_notifier,
+};
+
+/**
  * cmm_init - Module initialization
  *
  * Return value:
@@ -399,9 +420,12 @@ static int cmm_init(void)
         if ((rc = register_oom_notifier(&cmm_oom_nb)) < 0)
                 return rc;
 
-        if ((rc = cmm_sysfs_register(&cmm_sysdev)))
+        if ((rc = register_reboot_notifier(&cmm_reboot_nb)))
                 goto out_oom_notifier;
 
+        if ((rc = cmm_sysfs_register(&cmm_sysdev)))
+                goto out_reboot_notifier;
+
         if (cmm_disabled)
                 return rc;
 
@@ -415,6 +439,8 @@ static int cmm_init(void)
 
 out_unregister_sysfs:
         cmm_unregister_sysfs(&cmm_sysdev);
+out_reboot_notifier:
+        unregister_reboot_notifier(&cmm_reboot_nb);
 out_oom_notifier:
         unregister_oom_notifier(&cmm_oom_nb);
         return rc;
@@ -431,6 +457,7 @@ static void cmm_exit(void)
         if (cmm_thread_ptr)
                 kthread_stop(cmm_thread_ptr);
         unregister_oom_notifier(&cmm_oom_nb);
+        unregister_reboot_notifier(&cmm_reboot_nb);
         cmm_free_pages(loaned_pages);
         cmm_unregister_sysfs(&cmm_sysdev);
 }
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 54816d75b578..989d6462c154 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -21,6 +21,8 @@
  * Please address comments and feedback to Linas Vepstas <linas@austin.ibm.com>
  */
 
+#undef DEBUG
+
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/list.h>
@@ -488,10 +490,8 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
         if (!(pdn->eeh_mode & EEH_MODE_SUPPORTED) ||
             pdn->eeh_mode & EEH_MODE_NOCHECK) {
                 ignored_check++;
-#ifdef DEBUG
-                printk ("EEH:ignored check (%x) for %s %s\n", 
-                        pdn->eeh_mode, pci_name (dev), dn->full_name);
-#endif
+                pr_debug("EEH: Ignored check (%x) for %s %s\n",
+                         pdn->eeh_mode, pci_name (dev), dn->full_name);
                 return 0;
         }
 
@@ -1014,10 +1014,9 @@ static void *early_enable_eeh(struct device_node *dn, void *data)
                         eeh_subsystem_enabled = 1;
                         pdn->eeh_mode |= EEH_MODE_SUPPORTED;
 
-#ifdef DEBUG
-                        printk(KERN_DEBUG "EEH: %s: eeh enabled, config=%x pe_config=%x\n",
-                               dn->full_name, pdn->eeh_config_addr, pdn->eeh_pe_config_addr);
-#endif
+                        pr_debug("EEH: %s: eeh enabled, config=%x pe_config=%x\n",
+                                 dn->full_name, pdn->eeh_config_addr,
+                                 pdn->eeh_pe_config_addr);
                 } else {
 
                         /* This device doesn't support EEH, but it may have an
@@ -1161,13 +1160,17 @@ static void eeh_add_device_late(struct pci_dev *dev)
         if (!dev || !eeh_subsystem_enabled)
                 return;
 
-#ifdef DEBUG
-        printk(KERN_DEBUG "EEH: adding device %s\n", pci_name(dev));
-#endif
+        pr_debug("EEH: Adding device %s\n", pci_name(dev));
 
-        pci_dev_get (dev);
         dn = pci_device_to_OF_node(dev);
         pdn = PCI_DN(dn);
+        if (pdn->pcidev == dev) {
+                pr_debug("EEH: Already referenced !\n");
+                return;
+        }
+        WARN_ON(pdn->pcidev);
+
+        pci_dev_get (dev);
         pdn->pcidev = dev;
 
         pci_addr_cache_insert_device(dev);
@@ -1206,17 +1209,18 @@ static void eeh_remove_device(struct pci_dev *dev)
                 return;
 
         /* Unregister the device with the EEH/PCI address search system */
-#ifdef DEBUG
-        printk(KERN_DEBUG "EEH: remove device %s\n", pci_name(dev));
-#endif
-        pci_addr_cache_remove_device(dev);
-        eeh_sysfs_remove_device(dev);
+        pr_debug("EEH: Removing device %s\n", pci_name(dev));
 
         dn = pci_device_to_OF_node(dev);
-        if (PCI_DN(dn)->pcidev) {
-                PCI_DN(dn)->pcidev = NULL;
-                pci_dev_put (dev);
+        if (PCI_DN(dn)->pcidev == NULL) {
+                pr_debug("EEH: Not referenced !\n");
+                return;
         }
+        PCI_DN(dn)->pcidev = NULL;
+        pci_dev_put (dev);
+
+        pci_addr_cache_remove_device(dev);
+        eeh_sysfs_remove_device(dev);
 }
 
 void eeh_remove_bus_device(struct pci_dev *dev)
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 1f032483c026..a20ead87153d 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -116,7 +116,7 @@ static void pseries_cpu_die(unsigned int cpu)
                 cpu_status = query_cpu_stopped(pcpu);
                 if (cpu_status == 0 || cpu_status == -1)
                         break;
-                msleep(200);
+                cpu_relax();
         }
         if (cpu_status != 0) {
                 printk("Querying DEAD? cpu %i (%i) shows %i\n",
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index 7190493e9bdc..5e1ed3d60ee5 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -25,6 +25,8 @@
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
+#undef DEBUG
+
 #include <linux/pci.h>
 #include <asm/pci-bridge.h>
 #include <asm/ppc-pci.h>
@@ -69,74 +71,25 @@ EXPORT_SYMBOL_GPL(pcibios_find_pci_bus);
  * Remove all of the PCI devices under this bus both from the
  * linux pci device tree, and from the powerpc EEH address cache.
  */
-void
-pcibios_remove_pci_devices(struct pci_bus *bus)
+void pcibios_remove_pci_devices(struct pci_bus *bus)
 {
-        struct pci_dev *dev, *tmp;
+        struct pci_dev *dev, *tmp;
+        struct pci_bus *child_bus;
+
+        /* First go down child busses */
+        list_for_each_entry(child_bus, &bus->children, node)
+                pcibios_remove_pci_devices(child_bus);
 
+        pr_debug("PCI: Removing devices on bus %04x:%02x\n",
+                 pci_domain_nr(bus),  bus->number);
         list_for_each_entry_safe(dev, tmp, &bus->devices, bus_list) {
+                pr_debug("     * Removing %s...\n", pci_name(dev));
                 eeh_remove_bus_device(dev);
-                pci_remove_bus_device(dev);
-        }
+                pci_remove_bus_device(dev);
+        }
 }
 EXPORT_SYMBOL_GPL(pcibios_remove_pci_devices);
 
-/* Must be called before pci_bus_add_devices */
-void
-pcibios_fixup_new_pci_devices(struct pci_bus *bus)
-{
-        struct pci_dev *dev;
-
-        list_for_each_entry(dev, &bus->devices, bus_list) {
-                /* Skip already-added devices */
-                if (!dev->is_added) {
-                        int i;
-
-                        /* Fill device archdata and setup iommu table */
-                        pcibios_setup_new_device(dev);
-
-                        pci_read_irq_line(dev);
-                        for (i = 0; i < PCI_NUM_RESOURCES; i++) {
-                                struct resource *r = &dev->resource[i];
-
-                                if (r->parent || !r->start || !r->flags)
-                                        continue;
-                                pci_claim_resource(dev, i);
-                        }
-                }
-        }
-}
-EXPORT_SYMBOL_GPL(pcibios_fixup_new_pci_devices);
-
-static int
-pcibios_pci_config_bridge(struct pci_dev *dev)
-{
-        u8 sec_busno;
-        struct pci_bus *child_bus;
-
-        /* Get busno of downstream bus */
-        pci_read_config_byte(dev, PCI_SECONDARY_BUS, &sec_busno);
-
-        /* Add to children of PCI bridge dev->bus */
-        child_bus = pci_add_new_bus(dev->bus, dev, sec_busno);
-        if (!child_bus) {
-                printk (KERN_ERR "%s: could not add second bus\n", __func__);
-                return -EIO;
-        }
-        sprintf(child_bus->name, "PCI Bus #%02x", child_bus->number);
-
-        pci_scan_child_bus(child_bus);
-
-        /* Fixup new pci devices */
-        pcibios_fixup_new_pci_devices(child_bus);
-
-        /* Make the discovered devices available */
-        pci_bus_add_devices(child_bus);
-
-        eeh_add_device_tree_late(child_bus);
-        return 0;
-}
-
 /**
  * pcibios_add_pci_devices - adds new pci devices to bus
  *
@@ -147,10 +100,9 @@ pcibios_pci_config_bridge(struct pci_dev *dev)
  * is how this routine differs from other, similar pcibios
  * routines.)
  */
-void
-pcibios_add_pci_devices(struct pci_bus * bus)
+void pcibios_add_pci_devices(struct pci_bus * bus)
 {
-        int slotno, num, mode;
+        int slotno, num, mode, pass, max;
         struct pci_dev *dev;
         struct device_node *dn = pci_bus_to_OF_node(bus);
 
@@ -162,26 +114,23 @@ pcibios_add_pci_devices(struct pci_bus * bus)
 
         if (mode == PCI_PROBE_DEVTREE) {
                 /* use ofdt-based probe */
-                of_scan_bus(dn, bus);
-                if (!list_empty(&bus->devices)) {
-                        pcibios_fixup_new_pci_devices(bus);
-                        pci_bus_add_devices(bus);
-                        eeh_add_device_tree_late(bus);
-                }
+                of_rescan_bus(dn, bus);
         } else if (mode == PCI_PROBE_NORMAL) {
                 /* use legacy probe */
                 slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
                 num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
-                if (num) {
-                        pcibios_fixup_new_pci_devices(bus);
-                        pci_bus_add_devices(bus);
-                        eeh_add_device_tree_late(bus);
+                if (!num)
+                        return;
+                pcibios_setup_bus_devices(bus);
+                max = bus->secondary;
+                for (pass=0; pass < 2; pass++)
+                        list_for_each_entry(dev, &bus->devices, bus_list) {
+                        if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+                            dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+                                max = pci_scan_bridge(bus, dev, max, pass);
                 }
-
-                list_for_each_entry(dev, &bus->devices, bus_list)
-                        if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
-                                pcibios_pci_config_bridge(dev);
         }
+        pcibios_finish_adding_to_bus(bus);
 }
 EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);
 
@@ -190,6 +139,8 @@ struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn)
         struct pci_controller *phb;
         int primary;
 
+        pr_debug("PCI: Initializing new hotplug PHB %s\n", dn->full_name);
+
         primary = list_empty(&hose_list);
         phb = pcibios_alloc_controller(dn);
         if (!phb)
@@ -203,11 +154,59 @@ struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn)
                 eeh_add_device_tree_early(dn);
 
         scan_phb(phb);
-        pcibios_allocate_bus_resources(phb->bus);
-        pcibios_fixup_new_pci_devices(phb->bus);
-        pci_bus_add_devices(phb->bus);
-        eeh_add_device_tree_late(phb->bus);
+        pcibios_finish_adding_to_bus(phb->bus);
 
         return phb;
 }
 EXPORT_SYMBOL_GPL(init_phb_dynamic);
+
+/* RPA-specific bits for removing PHBs */
+int remove_phb_dynamic(struct pci_controller *phb)
+{
+        struct pci_bus *b = phb->bus;
+        struct resource *res;
+        int rc, i;
+
+        pr_debug("PCI: Removing PHB %04x:%02x... \n",
+                 pci_domain_nr(b), b->number);
+
+        /* We cannot to remove a root bus that has children */
+        if (!(list_empty(&b->children) && list_empty(&b->devices)))
+                return -EBUSY;
+
+        /* We -know- there aren't any child devices anymore at this stage
+         * and thus, we can safely unmap the IO space as it's not in use
+         */
+        res = &phb->io_resource;
+        if (res->flags & IORESOURCE_IO) {
+                rc = pcibios_unmap_io_space(b);
+                if (rc) {
+                        printk(KERN_ERR "%s: failed to unmap IO on bus %s\n",
+                               __func__, b->name);
+                        return 1;
+                }
+        }
+
+        /* Unregister the bridge device from sysfs and remove the PCI bus */
+        device_unregister(b->bridge);
+        phb->bus = NULL;
+        pci_remove_bus(b);
+
+        /* Now release the IO resource */
+        if (res->flags & IORESOURCE_IO)
+                release_resource(res);
+
+        /* Release memory resources */
+        for (i = 0; i < 3; ++i) {
+                res = &phb->mem_resources[i];
+                if (!(res->flags & IORESOURCE_MEM))
+                        continue;
+                release_resource(res);
+        }
+
+        /* Free pci_controller data structure */
+        pcibios_free_controller(phb);
+
+        return 0;
+}
+EXPORT_SYMBOL_GPL(remove_phb_dynamic);
diff --git a/arch/powerpc/platforms/pseries/phyp_dump.c b/arch/powerpc/platforms/pseries/phyp_dump.c
index edbc012c2ebc..6cf35cd8d0b5 100644
--- a/arch/powerpc/platforms/pseries/phyp_dump.c
+++ b/arch/powerpc/platforms/pseries/phyp_dump.c
@@ -130,6 +130,9 @@ static unsigned long init_dump_header(struct phyp_dump_header *ph)
 static void print_dump_header(const struct phyp_dump_header *ph)
 {
 #ifdef DEBUG
+        if (ph == NULL)
+                return;
+
         printk(KERN_INFO "dump header:\n");
         /* setup some ph->sections required */
         printk(KERN_INFO "version = %d\n", ph->version);
@@ -411,6 +414,8 @@ static int __init phyp_dump_setup(void)
                 of_node_put(rtas);
         }
 
+        ibm_configure_kernel_dump = rtas_token("ibm,configure-kernel-dump");
+
         print_dump_header(dump_header);
         dump_area_length = init_dump_header(&phdr);
         /* align down */
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index e1904774a70f..f7a69021b7bf 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -579,7 +579,7 @@ static void xics_update_irq_servers(void)
         int i, j;
         struct device_node *np;
         u32 ilen;
-        const u32 *ireg, *isize;
+        const u32 *ireg;
         u32 hcpuid;
 
         /* Find the server numbers for the boot cpu. */
@@ -607,11 +607,6 @@ static void xics_update_irq_servers(void)
                 }
         }
 
-        /* get the bit size of server numbers */
-        isize = of_get_property(np, "ibm,interrupt-server#-size", NULL);
-        if (isize)
-                interrupt_server_size = *isize;
-
         of_node_put(np);
 }
 
@@ -682,6 +677,7 @@ void __init xics_init_IRQ(void)
         struct device_node *np;
         u32 indx = 0;
         int found = 0;
+        const u32 *isize;
 
         ppc64_boot_msg(0x20, "XICS Init");
 
@@ -701,6 +697,26 @@ void __init xics_init_IRQ(void)
         if (found == 0)
                 return;
 
+        /* get the bit size of server numbers */
+        found = 0;
+
+        for_each_compatible_node(np, NULL, "ibm,ppc-xics") {
+                isize = of_get_property(np, "ibm,interrupt-server#-size", NULL);
+
+                if (!isize)
+                        continue;
+
+                if (!found) {
+                        interrupt_server_size = *isize;
+                        found = 1;
+                } else if (*isize != interrupt_server_size) {
+                        printk(KERN_WARNING "XICS: "
+                               "mismatched ibm,interrupt-server#-size\n");
+                        interrupt_server_size = max(*isize,
+                                                    interrupt_server_size);
+                }
+        }
+
         xics_update_irq_servers();
         xics_init_host();
 
@@ -728,9 +744,18 @@ static void xics_set_cpu_priority(unsigned char cppr)
 /* Have the calling processor join or leave the specified global queue */
 static void xics_set_cpu_giq(unsigned int gserver, unsigned int join)
 {
-        int status = rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE,
-                (1UL << interrupt_server_size) - 1 - gserver, join);
-        WARN_ON(status < 0);
+        int index;
+        int status;
+
+        if (!rtas_indicator_present(GLOBAL_INTERRUPT_QUEUE, NULL))
+                return;
+
+        index = (1UL << interrupt_server_size) - 1 - gserver;
+
+        status = rtas_set_indicator_fast(GLOBAL_INTERRUPT_QUEUE, index, join);
+
+        WARN(status < 0, "set-indicator(%d, %d, %u) returned %d\n",
+             GLOBAL_INTERRUPT_QUEUE, index, join, status);
 }
 
 void xics_setup_cpu(void)