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

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (62 commits)
  powerpc/85xx: Fix signedness bug in cache-sram
  powerpc/fsl: 85xx: document cache sram bindings
  powerpc/fsl: define binding for fsl mpic interrupt controllers
  powerpc/fsl_msi: Handle msi-available-ranges better
  drivers/serial/ucc_uart.c: Add of_node_put to avoid memory leak
  powerpc/85xx: Fix SPE float to integer conversion failure
  powerpc/85xx: Update sata controller compatible for p1022ds board
  ATA: Add FSL sata v2 controller support
  powerpc/mpc8xxx_gpio: simplify searching for 'fsl, qoriq-gpio' compatiable
  powerpc/8xx: remove obsolete mgsuvd board
  powerpc/82xx: rename and update mgcoge board support
  powerpc/83xx: rename and update kmeter1
  powerpc/85xx: Workaroudn e500 CPU erratum A005
  powerpc/fsl_pci: Add support for FSL PCIe controllers v2.x
  powerpc/85xx: Fix writing to spin table 'cpu-release-addr' on ppc64e
  powerpc/pseries: Disable MSI using new interface if possible
  powerpc: Enable GENERIC_HARDIRQS_NO_DEPRECATED.
  powerpc: core irq_data conversion.
  powerpc: sysdev/xilinx_intc irq_data conversion.
  powerpc: sysdev/uic irq_data conversion.
  ...

Fix up conflicts in arch/powerpc/sysdev/fsl_msi.c (due to getting rid of
of_platform_driver in arch/powerpc)

7 files changed, 849 insertions, 117 deletions

diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index f4803868642c..3cafc306b971 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -508,12 +508,7 @@ static int cmm_memory_isolate_cb(struct notifier_block *self,
         if (action == MEM_ISOLATE_COUNT)
                 ret = cmm_count_pages(arg);
 
-        if (ret)
-                ret = notifier_from_errno(ret);
-        else
-                ret = NOTIFY_OK;
-
-        return ret;
+        return notifier_from_errno(ret);
 }
 
 static struct notifier_block cmm_mem_isolate_nb = {
@@ -635,12 +630,7 @@ static int cmm_memory_cb(struct notifier_block *self,
                 break;
         }
 
-        if (ret)
-                ret = notifier_from_errno(ret);
-        else
-                ret = NOTIFY_OK;
-
-        return ret;
+        return notifier_from_errno(ret);
 }
 
 static struct notifier_block cmm_mem_nb = {
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 17a11c82e6f8..3cc4d102b1f1 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -876,7 +876,7 @@ void eeh_restore_bars(struct pci_dn *pdn)
  *
  * Save the values of the device bars. Unlike the restore
  * routine, this routine is *not* recursive. This is because
- * PCI devices are added individuallly; but, for the restore,
+ * PCI devices are added individually; but, for the restore,
  * an entire slot is reset at a time.
  */
 static void eeh_save_bars(struct pci_dn *pdn)
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index edea60b7ee90..154c464cdca5 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -33,6 +33,7 @@
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 #include <linux/crash_dump.h>
+#include <linux/memory.h>
 #include <asm/io.h>
 #include <asm/prom.h>
 #include <asm/rtas.h>
@@ -45,6 +46,7 @@
 #include <asm/tce.h>
 #include <asm/ppc-pci.h>
 #include <asm/udbg.h>
+#include <asm/mmzone.h>
 
 #include "plpar_wrappers.h"
 
@@ -270,6 +272,152 @@ static unsigned long tce_get_pSeriesLP(struct iommu_table *tbl, long tcenum)
         return tce_ret;
 }
 
+/* this is compatable with cells for the device tree property */
+struct dynamic_dma_window_prop {
+        __be32  liobn;          /* tce table number */
+        __be64  dma_base;       /* address hi,lo */
+        __be32  tce_shift;      /* ilog2(tce_page_size) */
+        __be32  window_shift;   /* ilog2(tce_window_size) */
+};
+
+struct direct_window {
+        struct device_node *device;
+        const struct dynamic_dma_window_prop *prop;
+        struct list_head list;
+};
+
+/* Dynamic DMA Window support */
+struct ddw_query_response {
+        u32 windows_available;
+        u32 largest_available_block;
+        u32 page_size;
+        u32 migration_capable;
+};
+
+struct ddw_create_response {
+        u32 liobn;
+        u32 addr_hi;
+        u32 addr_lo;
+};
+
+static LIST_HEAD(direct_window_list);
+/* prevents races between memory on/offline and window creation */
+static DEFINE_SPINLOCK(direct_window_list_lock);
+/* protects initializing window twice for same device */
+static DEFINE_MUTEX(direct_window_init_mutex);
+#define DIRECT64_PROPNAME "linux,direct64-ddr-window-info"
+
+static int tce_clearrange_multi_pSeriesLP(unsigned long start_pfn,
+                                        unsigned long num_pfn, const void *arg)
+{
+        const struct dynamic_dma_window_prop *maprange = arg;
+        int rc;
+        u64 tce_size, num_tce, dma_offset, next;
+        u32 tce_shift;
+        long limit;
+
+        tce_shift = be32_to_cpu(maprange->tce_shift);
+        tce_size = 1ULL << tce_shift;
+        next = start_pfn << PAGE_SHIFT;
+        num_tce = num_pfn << PAGE_SHIFT;
+
+        /* round back to the beginning of the tce page size */
+        num_tce += next & (tce_size - 1);
+        next &= ~(tce_size - 1);
+
+        /* covert to number of tces */
+        num_tce |= tce_size - 1;
+        num_tce >>= tce_shift;
+
+        do {
+                /*
+                 * Set up the page with TCE data, looping through and setting
+                 * the values.
+                 */
+                limit = min_t(long, num_tce, 512);
+                dma_offset = next + be64_to_cpu(maprange->dma_base);
+
+                rc = plpar_tce_stuff((u64)be32_to_cpu(maprange->liobn),
+                                             dma_offset,
+                                             0, limit);
+                num_tce -= limit;
+        } while (num_tce > 0 && !rc);
+
+        return rc;
+}
+
+static int tce_setrange_multi_pSeriesLP(unsigned long start_pfn,
+                                        unsigned long num_pfn, const void *arg)
+{
+        const struct dynamic_dma_window_prop *maprange = arg;
+        u64 *tcep, tce_size, num_tce, dma_offset, next, proto_tce, liobn;
+        u32 tce_shift;
+        u64 rc = 0;
+        long l, limit;
+
+        local_irq_disable();    /* to protect tcep and the page behind it */
+        tcep = __get_cpu_var(tce_page);
+
+        if (!tcep) {
+                tcep = (u64 *)__get_free_page(GFP_ATOMIC);
+                if (!tcep) {
+                        local_irq_enable();
+                        return -ENOMEM;
+                }
+                __get_cpu_var(tce_page) = tcep;
+        }
+
+        proto_tce = TCE_PCI_READ | TCE_PCI_WRITE;
+
+        liobn = (u64)be32_to_cpu(maprange->liobn);
+        tce_shift = be32_to_cpu(maprange->tce_shift);
+        tce_size = 1ULL << tce_shift;
+        next = start_pfn << PAGE_SHIFT;
+        num_tce = num_pfn << PAGE_SHIFT;
+
+        /* round back to the beginning of the tce page size */
+        num_tce += next & (tce_size - 1);
+        next &= ~(tce_size - 1);
+
+        /* covert to number of tces */
+        num_tce |= tce_size - 1;
+        num_tce >>= tce_shift;
+
+        /* We can map max one pageful of TCEs at a time */
+        do {
+                /*
+                 * Set up the page with TCE data, looping through and setting
+                 * the values.
+                 */
+                limit = min_t(long, num_tce, 4096/TCE_ENTRY_SIZE);
+                dma_offset = next + be64_to_cpu(maprange->dma_base);
+
+                for (l = 0; l < limit; l++) {
+                        tcep[l] = proto_tce | next;
+                        next += tce_size;
+                }
+
+                rc = plpar_tce_put_indirect(liobn,
+                                            dma_offset,
+                                            (u64)virt_to_abs(tcep),
+                                            limit);
+
+                num_tce -= limit;
+        } while (num_tce > 0 && !rc);
+
+        /* error cleanup: caller will clear whole range */
+
+        local_irq_enable();
+        return rc;
+}
+
+static int tce_setrange_multi_pSeriesLP_walk(unsigned long start_pfn,
+                unsigned long num_pfn, void *arg)
+{
+        return tce_setrange_multi_pSeriesLP(start_pfn, num_pfn, arg);
+}
+
+
 #ifdef CONFIG_PCI
 static void iommu_table_setparms(struct pci_controller *phb,
                                  struct device_node *dn,
@@ -495,6 +643,329 @@ static void pci_dma_dev_setup_pSeries(struct pci_dev *dev)
                        pci_name(dev));
 }
 
+static int __read_mostly disable_ddw;
+
+static int __init disable_ddw_setup(char *str)
+{
+        disable_ddw = 1;
+        printk(KERN_INFO "ppc iommu: disabling ddw.\n");
+
+        return 0;
+}
+
+early_param("disable_ddw", disable_ddw_setup);
+
+static void remove_ddw(struct device_node *np)
+{
+        struct dynamic_dma_window_prop *dwp;
+        struct property *win64;
+        const u32 *ddr_avail;
+        u64 liobn;
+        int len, ret;
+
+        ddr_avail = of_get_property(np, "ibm,ddw-applicable", &len);
+        win64 = of_find_property(np, DIRECT64_PROPNAME, NULL);
+        if (!win64 || !ddr_avail || len < 3 * sizeof(u32))
+                return;
+
+        dwp = win64->value;
+        liobn = (u64)be32_to_cpu(dwp->liobn);
+
+        /* clear the whole window, note the arg is in kernel pages */
+        ret = tce_clearrange_multi_pSeriesLP(0,
+                1ULL << (be32_to_cpu(dwp->window_shift) - PAGE_SHIFT), dwp);
+        if (ret)
+                pr_warning("%s failed to clear tces in window.\n",
+                         np->full_name);
+        else
+                pr_debug("%s successfully cleared tces in window.\n",
+                         np->full_name);
+
+        ret = rtas_call(ddr_avail[2], 1, 1, NULL, liobn);
+        if (ret)
+                pr_warning("%s: failed to remove direct window: rtas returned "
+                        "%d to ibm,remove-pe-dma-window(%x) %llx\n",
+                        np->full_name, ret, ddr_avail[2], liobn);
+        else
+                pr_debug("%s: successfully removed direct window: rtas returned "
+                        "%d to ibm,remove-pe-dma-window(%x) %llx\n",
+                        np->full_name, ret, ddr_avail[2], liobn);
+}
+
+
+static int dupe_ddw_if_already_created(struct pci_dev *dev, struct device_node *pdn)
+{
+        struct device_node *dn;
+        struct pci_dn *pcidn;
+        struct direct_window *window;
+        const struct dynamic_dma_window_prop *direct64;
+        u64 dma_addr = 0;
+
+        dn = pci_device_to_OF_node(dev);
+        pcidn = PCI_DN(dn);
+        spin_lock(&direct_window_list_lock);
+        /* check if we already created a window and dupe that config if so */
+        list_for_each_entry(window, &direct_window_list, list) {
+                if (window->device == pdn) {
+                        direct64 = window->prop;
+                        dma_addr = direct64->dma_base;
+                        break;
+                }
+        }
+        spin_unlock(&direct_window_list_lock);
+
+        return dma_addr;
+}
+
+static u64 dupe_ddw_if_kexec(struct pci_dev *dev, struct device_node *pdn)
+{
+        struct device_node *dn;
+        struct pci_dn *pcidn;
+        int len;
+        struct direct_window *window;
+        const struct dynamic_dma_window_prop *direct64;
+        u64 dma_addr = 0;
+
+        dn = pci_device_to_OF_node(dev);
+        pcidn = PCI_DN(dn);
+        direct64 = of_get_property(pdn, DIRECT64_PROPNAME, &len);
+        if (direct64) {
+                window = kzalloc(sizeof(*window), GFP_KERNEL);
+                if (!window) {
+                        remove_ddw(pdn);
+                } else {
+                        window->device = pdn;
+                        window->prop = direct64;
+                        spin_lock(&direct_window_list_lock);
+                        list_add(&window->list, &direct_window_list);
+                        spin_unlock(&direct_window_list_lock);
+                        dma_addr = direct64->dma_base;
+                }
+        }
+
+        return dma_addr;
+}
+
+static int query_ddw(struct pci_dev *dev, const u32 *ddr_avail,
+                        struct ddw_query_response *query)
+{
+        struct device_node *dn;
+        struct pci_dn *pcidn;
+        u32 cfg_addr;
+        u64 buid;
+        int ret;
+
+        /*
+         * Get the config address and phb buid of the PE window.
+         * Rely on eeh to retrieve this for us.
+         * Retrieve them from the pci device, not the node with the
+         * dma-window property
+         */
+        dn = pci_device_to_OF_node(dev);
+        pcidn = PCI_DN(dn);
+        cfg_addr = pcidn->eeh_config_addr;
+        if (pcidn->eeh_pe_config_addr)
+                cfg_addr = pcidn->eeh_pe_config_addr;
+        buid = pcidn->phb->buid;
+        ret = rtas_call(ddr_avail[0], 3, 5, (u32 *)query,
+                  cfg_addr, BUID_HI(buid), BUID_LO(buid));
+        dev_info(&dev->dev, "ibm,query-pe-dma-windows(%x) %x %x %x"
+                " returned %d\n", ddr_avail[0], cfg_addr, BUID_HI(buid),
+                BUID_LO(buid), ret);
+        return ret;
+}
+
+static int create_ddw(struct pci_dev *dev, const u32 *ddr_avail,
+                        struct ddw_create_response *create, int page_shift,
+                        int window_shift)
+{
+        struct device_node *dn;
+        struct pci_dn *pcidn;
+        u32 cfg_addr;
+        u64 buid;
+        int ret;
+
+        /*
+         * Get the config address and phb buid of the PE window.
+         * Rely on eeh to retrieve this for us.
+         * Retrieve them from the pci device, not the node with the
+         * dma-window property
+         */
+        dn = pci_device_to_OF_node(dev);
+        pcidn = PCI_DN(dn);
+        cfg_addr = pcidn->eeh_config_addr;
+        if (pcidn->eeh_pe_config_addr)
+                cfg_addr = pcidn->eeh_pe_config_addr;
+        buid = pcidn->phb->buid;
+
+        do {
+                /* extra outputs are LIOBN and dma-addr (hi, lo) */
+                ret = rtas_call(ddr_avail[1], 5, 4, (u32 *)create, cfg_addr,
+                                BUID_HI(buid), BUID_LO(buid), page_shift, window_shift);
+        } while (rtas_busy_delay(ret));
+        dev_info(&dev->dev,
+                "ibm,create-pe-dma-window(%x) %x %x %x %x %x returned %d "
+                "(liobn = 0x%x starting addr = %x %x)\n", ddr_avail[1],
+                 cfg_addr, BUID_HI(buid), BUID_LO(buid), page_shift,
+                 window_shift, ret, create->liobn, create->addr_hi, create->addr_lo);
+
+        return ret;
+}
+
+/*
+ * If the PE supports dynamic dma windows, and there is space for a table
+ * that can map all pages in a linear offset, then setup such a table,
+ * and record the dma-offset in the struct device.
+ *
+ * dev: the pci device we are checking
+ * pdn: the parent pe node with the ibm,dma_window property
+ * Future: also check if we can remap the base window for our base page size
+ *
+ * returns the dma offset for use by dma_set_mask
+ */
+static u64 enable_ddw(struct pci_dev *dev, struct device_node *pdn)
+{
+        int len, ret;
+        struct ddw_query_response query;
+        struct ddw_create_response create;
+        int page_shift;
+        u64 dma_addr, max_addr;
+        struct device_node *dn;
+        const u32 *uninitialized_var(ddr_avail);
+        struct direct_window *window;
+        struct property *uninitialized_var(win64);
+        struct dynamic_dma_window_prop *ddwprop;
+
+        mutex_lock(&direct_window_init_mutex);
+
+        dma_addr = dupe_ddw_if_already_created(dev, pdn);
+        if (dma_addr != 0)
+                goto out_unlock;
+
+        dma_addr = dupe_ddw_if_kexec(dev, pdn);
+        if (dma_addr != 0)
+                goto out_unlock;
+
+        /*
+         * the ibm,ddw-applicable property holds the tokens for:
+         * ibm,query-pe-dma-window
+         * ibm,create-pe-dma-window
+         * ibm,remove-pe-dma-window
+         * for the given node in that order.
+         * the property is actually in the parent, not the PE
+         */
+        ddr_avail = of_get_property(pdn, "ibm,ddw-applicable", &len);
+        if (!ddr_avail || len < 3 * sizeof(u32))
+                goto out_unlock;
+
+       /*
+         * Query if there is a second window of size to map the
+         * whole partition.  Query returns number of windows, largest
+         * block assigned to PE (partition endpoint), and two bitmasks
+         * of page sizes: supported and supported for migrate-dma.
+         */
+        dn = pci_device_to_OF_node(dev);
+        ret = query_ddw(dev, ddr_avail, &query);
+        if (ret != 0)
+                goto out_unlock;
+
+        if (query.windows_available == 0) {
+                /*
+                 * no additional windows are available for this device.
+                 * We might be able to reallocate the existing window,
+                 * trading in for a larger page size.
+                 */
+                dev_dbg(&dev->dev, "no free dynamic windows");
+                goto out_unlock;
+        }
+        if (query.page_size & 4) {
+                page_shift = 24; /* 16MB */
+        } else if (query.page_size & 2) {
+                page_shift = 16; /* 64kB */
+        } else if (query.page_size & 1) {
+                page_shift = 12; /* 4kB */
+        } else {
+                dev_dbg(&dev->dev, "no supported direct page size in mask %x",
+                          query.page_size);
+                goto out_unlock;
+        }
+        /* verify the window * number of ptes will map the partition */
+        /* check largest block * page size > max memory hotplug addr */
+        max_addr = memory_hotplug_max();
+        if (query.largest_available_block < (max_addr >> page_shift)) {
+                dev_dbg(&dev->dev, "can't map partiton max 0x%llx with %u "
+                          "%llu-sized pages\n", max_addr,  query.largest_available_block,
+                          1ULL << page_shift);
+                goto out_unlock;
+        }
+        len = order_base_2(max_addr);
+        win64 = kzalloc(sizeof(struct property), GFP_KERNEL);
+        if (!win64) {
+                dev_info(&dev->dev,
+                        "couldn't allocate property for 64bit dma window\n");
+                goto out_unlock;
+        }
+        win64->name = kstrdup(DIRECT64_PROPNAME, GFP_KERNEL);
+        win64->value = ddwprop = kmalloc(sizeof(*ddwprop), GFP_KERNEL);
+        if (!win64->name || !win64->value) {
+                dev_info(&dev->dev,
+                        "couldn't allocate property name and value\n");
+                goto out_free_prop;
+        }
+
+        ret = create_ddw(dev, ddr_avail, &create, page_shift, len);
+        if (ret != 0)
+                goto out_free_prop;
+
+        ddwprop->liobn = cpu_to_be32(create.liobn);
+        ddwprop->dma_base = cpu_to_be64(of_read_number(&create.addr_hi, 2));
+        ddwprop->tce_shift = cpu_to_be32(page_shift);
+        ddwprop->window_shift = cpu_to_be32(len);
+
+        dev_dbg(&dev->dev, "created tce table LIOBN 0x%x for %s\n",
+                  create.liobn, dn->full_name);
+
+        window = kzalloc(sizeof(*window), GFP_KERNEL);
+        if (!window)
+                goto out_clear_window;
+
+        ret = walk_system_ram_range(0, memblock_end_of_DRAM() >> PAGE_SHIFT,
+                        win64->value, tce_setrange_multi_pSeriesLP_walk);
+        if (ret) {
+                dev_info(&dev->dev, "failed to map direct window for %s: %d\n",
+                         dn->full_name, ret);
+                goto out_clear_window;
+        }
+
+        ret = prom_add_property(pdn, win64);
+        if (ret) {
+                dev_err(&dev->dev, "unable to add dma window property for %s: %d",
+                         pdn->full_name, ret);
+                goto out_clear_window;
+        }
+
+        window->device = pdn;
+        window->prop = ddwprop;
+        spin_lock(&direct_window_list_lock);
+        list_add(&window->list, &direct_window_list);
+        spin_unlock(&direct_window_list_lock);
+
+        dma_addr = of_read_number(&create.addr_hi, 2);
+        goto out_unlock;
+
+out_clear_window:
+        remove_ddw(pdn);
+
+out_free_prop:
+        kfree(win64->name);
+        kfree(win64->value);
+        kfree(win64);
+
+out_unlock:
+        mutex_unlock(&direct_window_init_mutex);
+        return dma_addr;
+}
+
 static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
 {
         struct device_node *pdn, *dn;
@@ -541,23 +1012,137 @@ static void pci_dma_dev_setup_pSeriesLP(struct pci_dev *dev)
 
         set_iommu_table_base(&dev->dev, pci->iommu_table);
 }
+
+static int dma_set_mask_pSeriesLP(struct device *dev, u64 dma_mask)
+{
+        bool ddw_enabled = false;
+        struct device_node *pdn, *dn;
+        struct pci_dev *pdev;
+        const void *dma_window = NULL;
+        u64 dma_offset;
+
+        if (!dev->dma_mask || !dma_supported(dev, dma_mask))
+                return -EIO;
+
+        /* only attempt to use a new window if 64-bit DMA is requested */
+        if (!disable_ddw && dma_mask == DMA_BIT_MASK(64)) {
+                pdev = to_pci_dev(dev);
+
+                dn = pci_device_to_OF_node(pdev);
+                dev_dbg(dev, "node is %s\n", dn->full_name);
+
+                /*
+                 * the device tree might contain the dma-window properties
+                 * per-device and not neccesarily for the bus. So we need to
+                 * search upwards in the tree until we either hit a dma-window
+                 * property, OR find a parent with a table already allocated.
+                 */
+                for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table;
+                                pdn = pdn->parent) {
+                        dma_window = of_get_property(pdn, "ibm,dma-window", NULL);
+                        if (dma_window)
+                                break;
+                }
+                if (pdn && PCI_DN(pdn)) {
+                        dma_offset = enable_ddw(pdev, pdn);
+                        if (dma_offset != 0) {
+                                dev_info(dev, "Using 64-bit direct DMA at offset %llx\n", dma_offset);
+                                set_dma_offset(dev, dma_offset);
+                                set_dma_ops(dev, &dma_direct_ops);
+                                ddw_enabled = true;
+                        }
+                }
+        }
+
+        /* fall-through to iommu ops */
+        if (!ddw_enabled) {
+                dev_info(dev, "Using 32-bit DMA via iommu\n");
+                set_dma_ops(dev, &dma_iommu_ops);
+        }
+
+        *dev->dma_mask = dma_mask;
+        return 0;
+}
+
 #else  /* CONFIG_PCI */
 #define pci_dma_bus_setup_pSeries       NULL
 #define pci_dma_dev_setup_pSeries       NULL
 #define pci_dma_bus_setup_pSeriesLP     NULL
 #define pci_dma_dev_setup_pSeriesLP     NULL
+#define dma_set_mask_pSeriesLP          NULL
 #endif /* !CONFIG_PCI */
 
+static int iommu_mem_notifier(struct notifier_block *nb, unsigned long action,
+                void *data)
+{
+        struct direct_window *window;
+        struct memory_notify *arg = data;
+        int ret = 0;
+
+        switch (action) {
+        case MEM_GOING_ONLINE:
+                spin_lock(&direct_window_list_lock);
+                list_for_each_entry(window, &direct_window_list, list) {
+                        ret |= tce_setrange_multi_pSeriesLP(arg->start_pfn,
+                                        arg->nr_pages, window->prop);
+                        /* XXX log error */
+                }
+                spin_unlock(&direct_window_list_lock);
+                break;
+        case MEM_CANCEL_ONLINE:
+        case MEM_OFFLINE:
+                spin_lock(&direct_window_list_lock);
+                list_for_each_entry(window, &direct_window_list, list) {
+                        ret |= tce_clearrange_multi_pSeriesLP(arg->start_pfn,
+                                        arg->nr_pages, window->prop);
+                        /* XXX log error */
+                }
+                spin_unlock(&direct_window_list_lock);
+                break;
+        default:
+                break;
+        }
+        if (ret && action != MEM_CANCEL_ONLINE)
+                return NOTIFY_BAD;
+
+        return NOTIFY_OK;
+}
+
+static struct notifier_block iommu_mem_nb = {
+        .notifier_call = iommu_mem_notifier,
+};
+
 static int iommu_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
 {
         int err = NOTIFY_OK;
         struct device_node *np = node;
         struct pci_dn *pci = PCI_DN(np);
+        struct direct_window *window;
 
         switch (action) {
         case PSERIES_RECONFIG_REMOVE:
                 if (pci && pci->iommu_table)
                         iommu_free_table(pci->iommu_table, np->full_name);
+
+                spin_lock(&direct_window_list_lock);
+                list_for_each_entry(window, &direct_window_list, list) {
+                        if (window->device == np) {
+                                list_del(&window->list);
+                                kfree(window);
+                                break;
+                        }
+                }
+                spin_unlock(&direct_window_list_lock);
+
+                /*
+                 * Because the notifier runs after isolation of the
+                 * slot, we are guaranteed any DMA window has already
+                 * been revoked and the TCEs have been marked invalid,
+                 * so we don't need a call to remove_ddw(np). However,
+                 * if an additional notifier action is added before the
+                 * isolate call, we should update this code for
+                 * completeness with such a call.
+                 */
                 break;
         default:
                 err = NOTIFY_DONE;
@@ -587,6 +1172,7 @@ void iommu_init_early_pSeries(void)
                 ppc_md.tce_get   = tce_get_pSeriesLP;
                 ppc_md.pci_dma_bus_setup = pci_dma_bus_setup_pSeriesLP;
                 ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_pSeriesLP;
+                ppc_md.dma_set_mask = dma_set_mask_pSeriesLP;
         } else {
                 ppc_md.tce_build = tce_build_pSeries;
                 ppc_md.tce_free  = tce_free_pSeries;
@@ -597,6 +1183,7 @@ void iommu_init_early_pSeries(void)
 
 
         pSeries_reconfig_notifier_register(&iommu_reconfig_nb);
+        register_memory_notifier(&iommu_mem_nb);
 
         set_pci_dma_ops(&dma_iommu_ops);
 }
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 1164c3430f2c..18ac801f8e90 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -93,8 +93,18 @@ static void rtas_disable_msi(struct pci_dev *pdev)
         if (!pdn)
                 return;
 
-        if (rtas_change_msi(pdn, RTAS_CHANGE_FN, 0) != 0)
-                pr_debug("rtas_msi: Setting MSIs to 0 failed!\n");
+        /*
+         * disabling MSI with the explicit interface also disables MSI-X
+         */
+        if (rtas_change_msi(pdn, RTAS_CHANGE_MSI_FN, 0) != 0) {
+                /* 
+                 * may have failed because explicit interface is not
+                 * present
+                 */
+                if (rtas_change_msi(pdn, RTAS_CHANGE_FN, 0) != 0) {
+                        pr_debug("rtas_msi: Setting MSIs to 0 failed!\n");
+                }
+        }
 }
 
 static int rtas_query_irq_number(struct pci_dn *pdn, int offset)
diff --git a/arch/powerpc/platforms/pseries/nvram.c b/arch/powerpc/platforms/pseries/nvram.c
index 7e828ba29bc3..419707b07248 100644
--- a/arch/powerpc/platforms/pseries/nvram.c
+++ b/arch/powerpc/platforms/pseries/nvram.c
@@ -16,6 +16,8 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/kmsg_dump.h>
 #include <asm/uaccess.h>
 #include <asm/nvram.h>
 #include <asm/rtas.h>
@@ -30,17 +32,54 @@ static int nvram_fetch, nvram_store;
 static char nvram_buf[NVRW_CNT];        /* assume this is in the first 4GB */
 static DEFINE_SPINLOCK(nvram_lock);
 
-static long nvram_error_log_index = -1;
-static long nvram_error_log_size = 0;
-
 struct err_log_info {
         int error_type;
         unsigned int seq_num;
 };
-#define NVRAM_MAX_REQ           2079
-#define NVRAM_MIN_REQ           1055
 
-#define NVRAM_LOG_PART_NAME     "ibm,rtas-log"
+struct nvram_os_partition {
+        const char *name;
+        int req_size;   /* desired size, in bytes */
+        int min_size;   /* minimum acceptable size (0 means req_size) */
+        long size;      /* size of data portion (excluding err_log_info) */
+        long index;     /* offset of data portion of partition */
+};
+
+static struct nvram_os_partition rtas_log_partition = {
+        .name = "ibm,rtas-log",
+        .req_size = 2079,
+        .min_size = 1055,
+        .index = -1
+};
+
+static struct nvram_os_partition oops_log_partition = {
+        .name = "lnx,oops-log",
+        .req_size = 4000,
+        .min_size = 2000,
+        .index = -1
+};
+
+static const char *pseries_nvram_os_partitions[] = {
+        "ibm,rtas-log",
+        "lnx,oops-log",
+        NULL
+};
+
+static void oops_to_nvram(struct kmsg_dumper *dumper,
+                enum kmsg_dump_reason reason,
+                const char *old_msgs, unsigned long old_len,
+                const char *new_msgs, unsigned long new_len);
+
+static struct kmsg_dumper nvram_kmsg_dumper = {
+        .dump = oops_to_nvram
+};
+
+/* See clobbering_unread_rtas_event() */
+#define NVRAM_RTAS_READ_TIMEOUT 5               /* seconds */
+static unsigned long last_unread_rtas_event;    /* timestamp */
+
+/* We preallocate oops_buf during init to avoid kmalloc during oops/panic. */
+static char *oops_buf;
 
 static ssize_t pSeries_nvram_read(char *buf, size_t count, loff_t *index)
 {
@@ -134,7 +173,7 @@ static ssize_t pSeries_nvram_get_size(void)
 }
 
 
-/* nvram_write_error_log
+/* nvram_write_os_partition, nvram_write_error_log
  *
  * We need to buffer the error logs into nvram to ensure that we have
  * the failure information to decode.  If we have a severe error there
@@ -156,48 +195,58 @@ static ssize_t pSeries_nvram_get_size(void)
  * The 'data' section would look like (in bytes):
  * +--------------+------------+-----------------------------------+
  * | event_logged | sequence # | error log                         |
- * |0            3|4          7|8            nvram_error_log_size-1|
+ * |0            3|4          7|8                  error_log_size-1|
  * +--------------+------------+-----------------------------------+
  *
  * event_logged: 0 if event has not been logged to syslog, 1 if it has
  * sequence #: The unique sequence # for each event. (until it wraps)
  * error log: The error log from event_scan
  */
-int nvram_write_error_log(char * buff, int length,
-                          unsigned int err_type, unsigned int error_log_cnt)
+int nvram_write_os_partition(struct nvram_os_partition *part, char * buff,
+                int length, unsigned int err_type, unsigned int error_log_cnt)
 {
         int rc;
         loff_t tmp_index;
         struct err_log_info info;
         
-        if (nvram_error_log_index == -1) {
+        if (part->index == -1) {
                 return -ESPIPE;
         }
 
-        if (length > nvram_error_log_size) {
-                length = nvram_error_log_size;
+        if (length > part->size) {
+                length = part->size;
         }
 
         info.error_type = err_type;
         info.seq_num = error_log_cnt;
 
-        tmp_index = nvram_error_log_index;
+        tmp_index = part->index;
 
         rc = ppc_md.nvram_write((char *)&info, sizeof(struct err_log_info), &tmp_index);
         if (rc <= 0) {
-                printk(KERN_ERR "nvram_write_error_log: Failed nvram_write (%d)\n", rc);
+                pr_err("%s: Failed nvram_write (%d)\n", __FUNCTION__, rc);
                 return rc;
         }
 
         rc = ppc_md.nvram_write(buff, length, &tmp_index);
         if (rc <= 0) {
-                printk(KERN_ERR "nvram_write_error_log: Failed nvram_write (%d)\n", rc);
+                pr_err("%s: Failed nvram_write (%d)\n", __FUNCTION__, rc);
                 return rc;
         }
         
         return 0;
 }
 
+int nvram_write_error_log(char * buff, int length,
+                          unsigned int err_type, unsigned int error_log_cnt)
+{
+        int rc = nvram_write_os_partition(&rtas_log_partition, buff, length,
+                                                err_type, error_log_cnt);
+        if (!rc)
+                last_unread_rtas_event = get_seconds();
+        return rc;
+}
+
 /* nvram_read_error_log
  *
  * Reads nvram for error log for at most 'length'
@@ -209,13 +258,13 @@ int nvram_read_error_log(char * buff, int length,
         loff_t tmp_index;
         struct err_log_info info;
         
-        if (nvram_error_log_index == -1)
+        if (rtas_log_partition.index == -1)
                 return -1;
 
-        if (length > nvram_error_log_size)
-                length = nvram_error_log_size;
+        if (length > rtas_log_partition.size)
+                length = rtas_log_partition.size;
 
-        tmp_index = nvram_error_log_index;
+        tmp_index = rtas_log_partition.index;
 
         rc = ppc_md.nvram_read((char *)&info, sizeof(struct err_log_info), &tmp_index);
         if (rc <= 0) {
@@ -244,37 +293,40 @@ int nvram_clear_error_log(void)
         int clear_word = ERR_FLAG_ALREADY_LOGGED;
         int rc;
 
-        if (nvram_error_log_index == -1)
+        if (rtas_log_partition.index == -1)
                 return -1;
 
-        tmp_index = nvram_error_log_index;
+        tmp_index = rtas_log_partition.index;
         
         rc = ppc_md.nvram_write((char *)&clear_word, sizeof(int), &tmp_index);
         if (rc <= 0) {
                 printk(KERN_ERR "nvram_clear_error_log: Failed nvram_write (%d)\n", rc);
                 return rc;
         }
+        last_unread_rtas_event = 0;
 
         return 0;
 }
 
-/* pseries_nvram_init_log_partition
+/* pseries_nvram_init_os_partition
  *
- * This will setup the partition we need for buffering the
- * error logs and cleanup partitions if needed.
+ * This sets up a partition with an "OS" signature.
  *
  * The general strategy is the following:
- * 1.) If there is log partition large enough then use it.
- * 2.) If there is none large enough, search
- * for a free partition that is large enough.
- * 3.) If there is not a free partition large enough remove 
- * _all_ OS partitions and consolidate the space.
- * 4.) Will first try getting a chunk that will satisfy the maximum
- * error log size (NVRAM_MAX_REQ).
- * 5.) If the max chunk cannot be allocated then try finding a chunk
- * that will satisfy the minum needed (NVRAM_MIN_REQ).
+ * 1.) If a partition with the indicated name already exists...
+ *      - If it's large enough, use it.
+ *      - Otherwise, recycle it and keep going.
+ * 2.) Search for a free partition that is large enough.
+ * 3.) If there's not a free partition large enough, recycle any obsolete
+ * OS partitions and try again.
+ * 4.) Will first try getting a chunk that will satisfy the requested size.
+ * 5.) If a chunk of the requested size cannot be allocated, then try finding
+ * a chunk that will satisfy the minum needed.
+ *
+ * Returns 0 on success, else -1.
  */
-static int __init pseries_nvram_init_log_partition(void)
+static int __init pseries_nvram_init_os_partition(struct nvram_os_partition
+                                                                        *part)
 {
         loff_t p;
         int size;
@@ -282,47 +334,76 @@ static int __init pseries_nvram_init_log_partition(void)
         /* Scan nvram for partitions */
         nvram_scan_partitions();
 
-        /* Lookg for ours */
-        p = nvram_find_partition(NVRAM_LOG_PART_NAME, NVRAM_SIG_OS, &size);
+        /* Look for ours */
+        p = nvram_find_partition(part->name, NVRAM_SIG_OS, &size);
 
         /* Found one but too small, remove it */
-        if (p && size < NVRAM_MIN_REQ) {
-                pr_info("nvram: Found too small "NVRAM_LOG_PART_NAME" partition"
-                        ",removing it...");
-                nvram_remove_partition(NVRAM_LOG_PART_NAME, NVRAM_SIG_OS);
+        if (p && size < part->min_size) {
+                pr_info("nvram: Found too small %s partition,"
+                                        " removing it...\n", part->name);
+                nvram_remove_partition(part->name, NVRAM_SIG_OS, NULL);
                 p = 0;
         }
 
         /* Create one if we didn't find */
         if (!p) {
-                p = nvram_create_partition(NVRAM_LOG_PART_NAME, NVRAM_SIG_OS,
-                                           NVRAM_MAX_REQ, NVRAM_MIN_REQ);
-                /* No room for it, try to get rid of any OS partition
-                 * and try again
-                 */
+                p = nvram_create_partition(part->name, NVRAM_SIG_OS,
+                                        part->req_size, part->min_size);
                 if (p == -ENOSPC) {
-                        pr_info("nvram: No room to create "NVRAM_LOG_PART_NAME
-                                " partition, deleting all OS partitions...");
-                        nvram_remove_partition(NULL, NVRAM_SIG_OS);
-                        p = nvram_create_partition(NVRAM_LOG_PART_NAME,
-                                                   NVRAM_SIG_OS, NVRAM_MAX_REQ,
-                                                   NVRAM_MIN_REQ);
+                        pr_info("nvram: No room to create %s partition, "
+                                "deleting any obsolete OS partitions...\n",
+                                part->name);
+                        nvram_remove_partition(NULL, NVRAM_SIG_OS,
+                                                pseries_nvram_os_partitions);
+                        p = nvram_create_partition(part->name, NVRAM_SIG_OS,
+                                        part->req_size, part->min_size);
                 }
         }
 
         if (p <= 0) {
-                pr_err("nvram: Failed to find or create "NVRAM_LOG_PART_NAME
-                       " partition, err %d\n", (int)p);
-                return 0;
+                pr_err("nvram: Failed to find or create %s"
+                       " partition, err %d\n", part->name, (int)p);
+                return -1;
         }
 
-        nvram_error_log_index = p;
-        nvram_error_log_size = nvram_get_partition_size(p) -
-                sizeof(struct err_log_info);
+        part->index = p;
+        part->size = nvram_get_partition_size(p) - sizeof(struct err_log_info);
         
         return 0;
 }
-machine_arch_initcall(pseries, pseries_nvram_init_log_partition);
+
+static void __init nvram_init_oops_partition(int rtas_partition_exists)
+{
+        int rc;
+
+        rc = pseries_nvram_init_os_partition(&oops_log_partition);
+        if (rc != 0) {
+                if (!rtas_partition_exists)
+                        return;
+                pr_notice("nvram: Using %s partition to log both"
+                        " RTAS errors and oops/panic reports\n",
+                        rtas_log_partition.name);
+                memcpy(&oops_log_partition, &rtas_log_partition,
+                                                sizeof(rtas_log_partition));
+        }
+        oops_buf = kmalloc(oops_log_partition.size, GFP_KERNEL);
+        rc = kmsg_dump_register(&nvram_kmsg_dumper);
+        if (rc != 0) {
+                pr_err("nvram: kmsg_dump_register() failed; returned %d\n", rc);
+                kfree(oops_buf);
+                return;
+        }
+}
+
+static int __init pseries_nvram_init_log_partitions(void)
+{
+        int rc;
+
+        rc = pseries_nvram_init_os_partition(&rtas_log_partition);
+        nvram_init_oops_partition(rc == 0);
+        return 0;
+}
+machine_arch_initcall(pseries, pseries_nvram_init_log_partitions);
 
 int __init pSeries_nvram_init(void)
 {
@@ -353,3 +434,59 @@ int __init pSeries_nvram_init(void)
 
         return 0;
 }
+
+/*
+ * Try to capture the last capture_len bytes of the printk buffer.  Return
+ * the amount actually captured.
+ */
+static size_t capture_last_msgs(const char *old_msgs, size_t old_len,
+                                const char *new_msgs, size_t new_len,
+                                char *captured, size_t capture_len)
+{
+        if (new_len >= capture_len) {
+                memcpy(captured, new_msgs + (new_len - capture_len),
+                                                                capture_len);
+                return capture_len;
+        } else {
+                /* Grab the end of old_msgs. */
+                size_t old_tail_len = min(old_len, capture_len - new_len);
+                memcpy(captured, old_msgs + (old_len - old_tail_len),
+                                                                old_tail_len);
+                memcpy(captured + old_tail_len, new_msgs, new_len);
+                return old_tail_len + new_len;
+        }
+}
+
+/*
+ * Are we using the ibm,rtas-log for oops/panic reports?  And if so,
+ * would logging this oops/panic overwrite an RTAS event that rtas_errd
+ * hasn't had a chance to read and process?  Return 1 if so, else 0.
+ *
+ * We assume that if rtas_errd hasn't read the RTAS event in
+ * NVRAM_RTAS_READ_TIMEOUT seconds, it's probably not going to.
+ */
+static int clobbering_unread_rtas_event(void)
+{
+        return (oops_log_partition.index == rtas_log_partition.index
+                && last_unread_rtas_event
+                && get_seconds() - last_unread_rtas_event <=
+                                                NVRAM_RTAS_READ_TIMEOUT);
+}
+
+/* our kmsg_dump callback */
+static void oops_to_nvram(struct kmsg_dumper *dumper,
+                enum kmsg_dump_reason reason,
+                const char *old_msgs, unsigned long old_len,
+                const char *new_msgs, unsigned long new_len)
+{
+        static unsigned int oops_count = 0;
+        size_t text_len;
+
+        if (clobbering_unread_rtas_event())
+                return;
+
+        text_len = capture_last_msgs(old_msgs, old_len, new_msgs, new_len,
+                                        oops_buf, oops_log_partition.size);
+        (void) nvram_write_os_partition(&oops_log_partition, oops_buf,
+                (int) text_len, ERR_TYPE_KERNEL_PANIC, ++oops_count);
+}
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index d345bfd56bbe..2a0089a2c829 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -114,10 +114,13 @@ static void __init fwnmi_init(void)
 
 static void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
 {
+        struct irq_chip *chip = get_irq_desc_chip(desc);
         unsigned int cascade_irq = i8259_irq();
+
         if (cascade_irq != NO_IRQ)
                 generic_handle_irq(cascade_irq);
-        desc->chip->eoi(irq);
+
+        chip->irq_eoi(&desc->irq_data);
 }
 
 static void __init pseries_setup_i8259_cascade(void)
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 7b96e5a270ce..01fea46c0335 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -202,20 +202,20 @@ static int get_irq_server(unsigned int virq, const struct cpumask *cpumask,
 #define get_irq_server(virq, cpumask, strict_check) (default_server)
 #endif
 
-static void xics_unmask_irq(unsigned int virq)
+static void xics_unmask_irq(struct irq_data *d)
 {
         unsigned int irq;
         int call_status;
         int server;
 
-        pr_devel("xics: unmask virq %d\n", virq);
+        pr_devel("xics: unmask virq %d\n", d->irq);
 
-        irq = (unsigned int)irq_map[virq].hwirq;
+        irq = (unsigned int)irq_map[d->irq].hwirq;
         pr_devel(" -> map to hwirq 0x%x\n", irq);
         if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
                 return;
 
-        server = get_irq_server(virq, irq_to_desc(virq)->affinity, 0);
+        server = get_irq_server(d->irq, d->affinity, 0);
 
         call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
                                 DEFAULT_PRIORITY);
@@ -235,61 +235,61 @@ static void xics_unmask_irq(unsigned int virq)
         }
 }
 
-static unsigned int xics_startup(unsigned int virq)
+static unsigned int xics_startup(struct irq_data *d)
 {
         /*
          * The generic MSI code returns with the interrupt disabled on the
          * card, using the MSI mask bits. Firmware doesn't appear to unmask
          * at that level, so we do it here by hand.
          */
-        if (irq_to_desc(virq)->msi_desc)
-                unmask_msi_irq(irq_get_irq_data(virq));
+        if (d->msi_desc)
+                unmask_msi_irq(d);
 
         /* unmask it */
-        xics_unmask_irq(virq);
+        xics_unmask_irq(d);
         return 0;
 }
 
-static void xics_mask_real_irq(unsigned int irq)
+static void xics_mask_real_irq(struct irq_data *d)
 {
         int call_status;
 
-        if (irq == XICS_IPI)
+        if (d->irq == XICS_IPI)
                 return;
 
-        call_status = rtas_call(ibm_int_off, 1, 1, NULL, irq);
+        call_status = rtas_call(ibm_int_off, 1, 1, NULL, d->irq);
         if (call_status != 0) {
                 printk(KERN_ERR "%s: ibm_int_off irq=%u returned %d\n",
-                        __func__, irq, call_status);
+                        __func__, d->irq, call_status);
                 return;
         }
 
         /* Have to set XIVE to 0xff to be able to remove a slot */
-        call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq,
+        call_status = rtas_call(ibm_set_xive, 3, 1, NULL, d->irq,
                                 default_server, 0xff);
         if (call_status != 0) {
                 printk(KERN_ERR "%s: ibm_set_xive(0xff) irq=%u returned %d\n",
-                        __func__, irq, call_status);
+                        __func__, d->irq, call_status);
                 return;
         }
 }
 
-static void xics_mask_irq(unsigned int virq)
+static void xics_mask_irq(struct irq_data *d)
 {
         unsigned int irq;
 
-        pr_devel("xics: mask virq %d\n", virq);
+        pr_devel("xics: mask virq %d\n", d->irq);
 
-        irq = (unsigned int)irq_map[virq].hwirq;
+        irq = (unsigned int)irq_map[d->irq].hwirq;
         if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
                 return;
-        xics_mask_real_irq(irq);
+        xics_mask_real_irq(d);
 }
 
 static void xics_mask_unknown_vec(unsigned int vec)
 {
         printk(KERN_ERR "Interrupt %u (real) is invalid, disabling it.\n", vec);
-        xics_mask_real_irq(vec);
+        xics_mask_real_irq(irq_get_irq_data(vec));
 }
 
 static inline unsigned int xics_xirr_vector(unsigned int xirr)
@@ -371,30 +371,31 @@ static unsigned char pop_cppr(void)
         return os_cppr->stack[--os_cppr->index];
 }
 
-static void xics_eoi_direct(unsigned int virq)
+static void xics_eoi_direct(struct irq_data *d)
 {
-        unsigned int irq = (unsigned int)irq_map[virq].hwirq;
+        unsigned int irq = (unsigned int)irq_map[d->irq].hwirq;
 
         iosync();
         direct_xirr_info_set((pop_cppr() << 24) | irq);
 }
 
-static void xics_eoi_lpar(unsigned int virq)
+static void xics_eoi_lpar(struct irq_data *d)
 {
-        unsigned int irq = (unsigned int)irq_map[virq].hwirq;
+        unsigned int irq = (unsigned int)irq_map[d->irq].hwirq;
 
         iosync();
         lpar_xirr_info_set((pop_cppr() << 24) | irq);
 }
 
-static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
+static int
+xics_set_affinity(struct irq_data *d, const struct cpumask *cpumask, bool force)
 {
         unsigned int irq;
         int status;
         int xics_status[2];
         int irq_server;
 
-        irq = (unsigned int)irq_map[virq].hwirq;
+        irq = (unsigned int)irq_map[d->irq].hwirq;
         if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
                 return -1;
 
@@ -406,13 +407,13 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
                 return -1;
         }
 
-        irq_server = get_irq_server(virq, cpumask, 1);
+        irq_server = get_irq_server(d->irq, cpumask, 1);
         if (irq_server == -1) {
                 char cpulist[128];
                 cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
                 printk(KERN_WARNING
                         "%s: No online cpus in the mask %s for irq %d\n",
-                        __func__, cpulist, virq);
+                        __func__, cpulist, d->irq);
                 return -1;
         }
 
@@ -430,20 +431,20 @@ static int xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
 
 static struct irq_chip xics_pic_direct = {
         .name = "XICS",
-        .startup = xics_startup,
-        .mask = xics_mask_irq,
-        .unmask = xics_unmask_irq,
-        .eoi = xics_eoi_direct,
-        .set_affinity = xics_set_affinity
+        .irq_startup = xics_startup,
+        .irq_mask = xics_mask_irq,
+        .irq_unmask = xics_unmask_irq,
+        .irq_eoi = xics_eoi_direct,
+        .irq_set_affinity = xics_set_affinity
 };
 
 static struct irq_chip xics_pic_lpar = {
         .name = "XICS",
-        .startup = xics_startup,
-        .mask = xics_mask_irq,
-        .unmask = xics_unmask_irq,
-        .eoi = xics_eoi_lpar,
-        .set_affinity = xics_set_affinity
+        .irq_startup = xics_startup,
+        .irq_mask = xics_mask_irq,
+        .irq_unmask = xics_unmask_irq,
+        .irq_eoi = xics_eoi_lpar,
+        .irq_set_affinity = xics_set_affinity
 };
 
 
@@ -890,6 +891,7 @@ void xics_migrate_irqs_away(void)
 
         for_each_irq(virq) {
                 struct irq_desc *desc;
+                struct irq_chip *chip;
                 int xics_status[2];
                 int status;
                 unsigned long flags;
@@ -903,12 +905,15 @@ void xics_migrate_irqs_away(void)
                 /* We need to get IPIs still. */
                 if (irq == XICS_IPI || irq == XICS_IRQ_SPURIOUS)
                         continue;
+
                 desc = irq_to_desc(virq);
 
                 /* We only need to migrate enabled IRQS */
-                if (desc == NULL || desc->chip == NULL
-                    || desc->action == NULL
-                    || desc->chip->set_affinity == NULL)
+                if (desc == NULL || desc->action == NULL)
+                        continue;
+
+                chip = get_irq_desc_chip(desc);
+                if (chip == NULL || chip->irq_set_affinity == NULL)
                         continue;
 
                 raw_spin_lock_irqsave(&desc->lock, flags);
@@ -934,8 +939,8 @@ void xics_migrate_irqs_away(void)
                                virq, cpu);
 
                 /* Reset affinity to all cpus */
-                cpumask_setall(irq_to_desc(virq)->affinity);
-                desc->chip->set_affinity(virq, cpu_all_mask);
+                cpumask_setall(desc->irq_data.affinity);
+                chip->irq_set_affinity(&desc->irq_data, cpu_all_mask, true);
 unlock:
                 raw_spin_unlock_irqrestore(&desc->lock, flags);
         }