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

10 files changed, 126 insertions, 35 deletions

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2e08942339ad..cbb3e0cef93a 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -220,13 +220,6 @@ config IOSAPIC
         depends on !IA64_HP_SIM
         default y
 
-config IA64_SGI_SN_SIM
-        bool "SGI Medusa Simulator Support"
-        depends on IA64_SGI_SN2 || IA64_GENERIC
-        help
-          If you are compiling a kernel that will run under SGI's IA-64
-          simulator (Medusa) then say Y, otherwise say N.
-
 config IA64_SGI_SN_XP
         tristate "Support communication between SGI SSIs"
         select IA64_UNCACHED_ALLOCATOR
diff --git a/arch/ia64/configs/sn2_defconfig b/arch/ia64/configs/sn2_defconfig
index c05613980300..04d0b00a2b8c 100644
--- a/arch/ia64/configs/sn2_defconfig
+++ b/arch/ia64/configs/sn2_defconfig
@@ -81,7 +81,6 @@ CONFIG_HOLES_IN_ZONE=y
 CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
 # CONFIG_IA64_CYCLONE is not set
 CONFIG_IOSAPIC=y
-CONFIG_IA64_SGI_SN_SIM=y
 CONFIG_FORCE_MAX_ZONEORDER=18
 CONFIG_SMP=y
 CONFIG_NR_CPUS=512
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 5c7c95737bbf..84f89da7c640 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -20,6 +20,7 @@
  * 02/01/00 R.Seth      fixed get_cpuinfo for SMP
  * 01/07/99 S.Eranian   added the support for command line argument
  * 06/24/99 W.Drummond  added boot_cpu_data.
+ * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()"
  */
 #include <linux/config.h>
 #include <linux/module.h>
@@ -85,6 +86,13 @@ EXPORT_SYMBOL(io_space);
 unsigned int num_io_spaces;
 
 /*
+ * "flush_icache_range()" needs to know what processor dependent stride size to use
+ * when it makes i-cache(s) coherent with d-caches.
+ */
+#define I_CACHE_STRIDE_SHIFT    5       /* Safest way to go: 32 bytes by 32 bytes */
+unsigned long ia64_i_cache_stride_shift = ~0;
+
+/*
  * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1).  This
  * mask specifies a mask of address bits that must be 0 in order for two buffers to be
  * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start
@@ -628,6 +636,12 @@ setup_per_cpu_areas (void)
         /* start_kernel() requires this... */
 }
 
+/*
+ * Calculate the max. cache line size.
+ *
+ * In addition, the minimum of the i-cache stride sizes is calculated for
+ * "flush_icache_range()".
+ */
 static void
 get_max_cacheline_size (void)
 {
@@ -641,6 +655,8 @@ get_max_cacheline_size (void)
                 printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n",
                        __FUNCTION__, status);
                 max = SMP_CACHE_BYTES;
+                /* Safest setup for "flush_icache_range()" */
+                ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
                 goto out;
         }
 
@@ -649,14 +665,31 @@ get_max_cacheline_size (void)
                                                     &cci);
                 if (status != 0) {
                         printk(KERN_ERR
-                               "%s: ia64_pal_cache_config_info(l=%lu) failed (status=%ld)\n",
+                               "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n",
                                __FUNCTION__, l, status);
                         max = SMP_CACHE_BYTES;
+                        /* The safest setup for "flush_icache_range()" */
+                        cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
+                        cci.pcci_unified = 1;
                 }
                 line_size = 1 << cci.pcci_line_size;
                 if (line_size > max)
                         max = line_size;
-        }
+                if (!cci.pcci_unified) {
+                        status = ia64_pal_cache_config_info(l,
+                                                    /* cache_type (instruction)= */ 1,
+                                                    &cci);
+                        if (status != 0) {
+                                printk(KERN_ERR
+                                "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n",
+                                        __FUNCTION__, l, status);
+                                /* The safest setup for "flush_icache_range()" */
+                                cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
+                        }
+                }
+                if (cci.pcci_stride < ia64_i_cache_stride_shift)
+                        ia64_i_cache_stride_shift = cci.pcci_stride;
+        }
   out:
         if (max > ia64_max_cacheline_size)
                 ia64_max_cacheline_size = max;
diff --git a/arch/ia64/lib/flush.S b/arch/ia64/lib/flush.S
index a1af9146cfdb..3e2cfa2c6d39 100644
--- a/arch/ia64/lib/flush.S
+++ b/arch/ia64/lib/flush.S
@@ -3,37 +3,59 @@
  *
  * Copyright (C) 1999-2001, 2005 Hewlett-Packard Co
  *      David Mosberger-Tang <davidm@hpl.hp.com>
+ *
+ * 05/28/05 Zoltan Menyhart     Dynamic stride size
  */
+
 #include <asm/asmmacro.h>
-#include <asm/page.h>
+
 
         /*
          * flush_icache_range(start,end)
-         *      Must flush range from start to end-1 but nothing else (need to
+         *
+         *      Make i-cache(s) coherent with d-caches.
+         *
+         *      Must deal with range from start to end-1 but nothing else (need to
          *      be careful not to touch addresses that may be unmapped).
+         *
+         *      Note: "in0" and "in1" are preserved for debugging purposes.
          */
 GLOBAL_ENTRY(flush_icache_range)
+
         .prologue
-        alloc r2=ar.pfs,2,0,0,0
-        sub r8=in1,in0,1
+        alloc   r2=ar.pfs,2,0,0,0
+        movl    r3=ia64_i_cache_stride_shift
+        mov     r21=1
+        ;;
+        ld8     r20=[r3]                // r20: stride shift
+        sub     r22=in1,r0,1            // last byte address
         ;;
-        shr.u r8=r8,5                   // we flush 32 bytes per iteration
-        .save ar.lc, r3
-        mov r3=ar.lc                    // save ar.lc
+        shr.u   r23=in0,r20             // start / (stride size)
+        shr.u   r22=r22,r20             // (last byte address) / (stride size)
+        shl     r21=r21,r20             // r21: stride size of the i-cache(s)
+        ;;
+        sub     r8=r22,r23              // number of strides - 1
+        shl     r24=r23,r20             // r24: addresses for "fc.i" =
+                                        //      "start" rounded down to stride boundary
+        .save   ar.lc,r3
+        mov     r3=ar.lc                // save ar.lc
         ;;
 
         .body
-
-        mov ar.lc=r8
+        mov     ar.lc=r8
         ;;
-.Loop:  fc.i in0                        // issuable on M2 only
-        add in0=32,in0
+        /*
+         * 32 byte aligned loop, even number of (actually 2) bundles
+         */
+.Loop:  fc.i    r24                     // issuable on M0 only
+        add     r24=r21,r24             // we flush "stride size" bytes per iteration
+        nop.i   0
         br.cloop.sptk.few .Loop
         ;;
         sync.i
         ;;
         srlz.i
         ;;
-        mov ar.lc=r3                    // restore ar.lc
+        mov     ar.lc=r3                // restore ar.lc
         br.ret.sptk.many rp
 END(flush_icache_range)
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 720a861f88be..54d9ed444e4a 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -157,6 +157,7 @@ alloc_pci_controller (int seg)
 
         memset(controller, 0, sizeof(*controller));
         controller->segment = seg;
+        controller->node = -1;
         return controller;
 }
 
@@ -288,6 +289,7 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
         unsigned int windows = 0;
         struct pci_bus *pbus;
         char *name;
+        int pxm;
 
         controller = alloc_pci_controller(domain);
         if (!controller)
@@ -295,10 +297,16 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
 
         controller->acpi_handle = device->handle;
 
+        pxm = acpi_get_pxm(controller->acpi_handle);
+#ifdef CONFIG_NUMA
+        if (pxm >= 0)
+                controller->node = pxm_to_nid_map[pxm];
+#endif
+
         acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window,
                         &windows);
-        controller->window = kmalloc(sizeof(*controller->window) * windows,
-                        GFP_KERNEL);
+        controller->window = kmalloc_node(sizeof(*controller->window) * windows,
+                        GFP_KERNEL, controller->node);
         if (!controller->window)
                 goto out2;
 
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index a67f39e448cb..a6649baf629a 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -61,7 +61,7 @@ sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
 }
 
 static void *
-sn_default_pci_bus_fixup(struct pcibus_bussoft *soft)
+sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
 {
         return NULL;
 }
@@ -362,7 +362,7 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
 
         provider_soft = NULL;
         if (provider->bus_fixup)
-                provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);
+                provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
 
         if (provider_soft == NULL)
                 return;         /* fixup failed or not applicable */
@@ -380,6 +380,22 @@ void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
 
+        /*
+         * If the node information we obtained during the fixup phase is invalid
+         * then set controller->node to -1 (undetermined)
+         */
+        if (controller->node >= num_online_nodes()) {
+                struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
+
+                printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%lu"
+                                    "L_IO=%lx L_MEM=%lx BASE=%lx\n",
+                        b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
+                        b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
+                printk(KERN_WARNING "on node %d but only %d nodes online."
+                        "Association set to undetermined.\n",
+                        controller->node, num_online_nodes());
+                controller->node = -1;
+        }
         return;
 
 error_return:
diff --git a/arch/ia64/sn/kernel/xpc_channel.c b/arch/ia64/sn/kernel/xpc_channel.c
index 6d02dac8056f..94698bea7be0 100644
--- a/arch/ia64/sn/kernel/xpc_channel.c
+++ b/arch/ia64/sn/kernel/xpc_channel.c
@@ -72,7 +72,7 @@ xpc_initialize_channels(struct xpc_partition *part, partid_t partid)
 enum xpc_retval
 xpc_setup_infrastructure(struct xpc_partition *part)
 {
-        int ret;
+        int ret, cpuid;
         struct timer_list *timer;
         partid_t partid = XPC_PARTID(part);
 
@@ -223,9 +223,9 @@ xpc_setup_infrastructure(struct xpc_partition *part)
         xpc_vars_part[partid].openclose_args_pa =
                                         __pa(part->local_openclose_args);
         xpc_vars_part[partid].IPI_amo_pa = __pa(part->local_IPI_amo_va);
-        xpc_vars_part[partid].IPI_nasid = cpuid_to_nasid(smp_processor_id());
-        xpc_vars_part[partid].IPI_phys_cpuid =
-                                        cpu_physical_id(smp_processor_id());
+        cpuid = raw_smp_processor_id(); /* any CPU in this partition will do */
+        xpc_vars_part[partid].IPI_nasid = cpuid_to_nasid(cpuid);
+        xpc_vars_part[partid].IPI_phys_cpuid = cpu_physical_id(cpuid);
         xpc_vars_part[partid].nchannels = part->nchannels;
         xpc_vars_part[partid].magic = XPC_VP_MAGIC1;
 
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c
index a2f7a88aefbb..0e4b9ad9ef02 100644
--- a/arch/ia64/sn/pci/pci_dma.c
+++ b/arch/ia64/sn/pci/pci_dma.c
@@ -79,6 +79,7 @@ void *sn_dma_alloc_coherent(struct device *dev, size_t size,
 {
         void *cpuaddr;
         unsigned long phys_addr;
+        int node;
         struct pci_dev *pdev = to_pci_dev(dev);
         struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev);
 
@@ -86,10 +87,19 @@ void *sn_dma_alloc_coherent(struct device *dev, size_t size,
 
         /*
          * Allocate the memory.
-         * FIXME: We should be doing alloc_pages_node for the node closest
-         *        to the PCI device.
          */
-        if (!(cpuaddr = (void *)__get_free_pages(GFP_ATOMIC, get_order(size))))
+        node = pcibus_to_node(pdev->bus);
+        if (likely(node >=0)) {
+                struct page *p = alloc_pages_node(node, GFP_ATOMIC, get_order(size));
+
+                if (likely(p))
+                        cpuaddr = page_address(p);
+                else
+                        return NULL;
+        } else
+                cpuaddr = (void *)__get_free_pages(GFP_ATOMIC, get_order(size));
+
+        if (unlikely(!cpuaddr))
                 return NULL;
 
         memset(cpuaddr, 0x0, size);
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
index 9813da56d311..b95e928636a1 100644
--- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c
+++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c
@@ -85,7 +85,7 @@ pcibr_error_intr_handler(int irq, void *arg, struct pt_regs *regs)
 }
 
 void *
-pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft)
+pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *controller)
 {
         int nasid, cnode, j;
         struct hubdev_info *hubdev_info;
@@ -158,6 +158,14 @@ pcibr_bus_fixup(struct pcibus_bussoft *prom_bussoft)
         memset(soft->pbi_int_ate_resource.ate, 0,
                (soft->pbi_int_ate_size * sizeof(uint64_t)));
 
+        if (prom_bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP)
+                /*
+                 * TIO PCI Bridge with no closest node information.
+                 * FIXME: Find another way to determine the closest node
+                 */
+                controller->node = -1;
+        else
+                controller->node = cnode;
         return soft;
 }
 
diff --git a/arch/ia64/sn/pci/tioca_provider.c b/arch/ia64/sn/pci/tioca_provider.c
index 51cc4e63092c..5d76a7581465 100644
--- a/arch/ia64/sn/pci/tioca_provider.c
+++ b/arch/ia64/sn/pci/tioca_provider.c
@@ -581,7 +581,7 @@ tioca_error_intr_handler(int irq, void *arg, struct pt_regs *pt)
  * the caller.
  */
 static void *
-tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft)
+tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *controller)
 {
         struct tioca_common *tioca_common;
         struct tioca_kernel *tioca_kern;
@@ -646,6 +646,8 @@ tioca_bus_fixup(struct pcibus_bussoft *prom_bussoft)
                        __FUNCTION__, SGI_TIOCA_ERROR,
                        (int)tioca_common->ca_common.bs_persist_busnum);
 
+        /* Setup locality information */
+        controller->node = tioca_kern->ca_closest_node;
         return tioca_common;
 }