18 files changed, 543 insertions, 62 deletions

diff --git a/arch/sparc64/Kconfig b/arch/sparc64/Kconfig
index bd00f89eed1e..89a1b469b93d 100644
--- a/arch/sparc64/Kconfig
+++ b/arch/sparc64/Kconfig
@@ -396,6 +396,15 @@ config SCHED_SMT
           when dealing with UltraSPARC cpus at a cost of slightly increased
           overhead in some places. If unsure say N here.
 
+config SCHED_MC
+        bool "Multi-core scheduler support"
+        depends on SMP
+        default y
+        help
+          Multi-core scheduler support improves the CPU scheduler's decision
+          making when dealing with multi-core CPU chips at a cost of slightly
+          increased overhead in some places. If unsure say N here.
+
 source "kernel/Kconfig.preempt"
 
 config CMDLINE_BOOL
diff --git a/arch/sparc64/kernel/Makefile b/arch/sparc64/kernel/Makefile
index d8d19093d12f..f964bf28d21a 100644
--- a/arch/sparc64/kernel/Makefile
+++ b/arch/sparc64/kernel/Makefile
@@ -1,4 +1,4 @@
-# $Id: Makefile,v 1.70 2002/02/09 19:49:30 davem Exp $
+#
 # Makefile for the linux kernel.
 #
 
@@ -8,7 +8,7 @@ EXTRA_CFLAGS := -Werror
 extra-y         := head.o init_task.o vmlinux.lds
 
 obj-y           := process.o setup.o cpu.o idprom.o \
-                   traps.o auxio.o una_asm.o \
+                   traps.o auxio.o una_asm.o sysfs.o \
                    irq.o ptrace.o time.o sys_sparc.o signal.o \
                    unaligned.o central.o pci.o starfire.o semaphore.o \
                    power.o sbus.o iommu_common.o sparc64_ksyms.o chmc.o \
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index ed712e0b3372..7d1a11822a1e 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -2514,9 +2514,9 @@ sun4v_ncs_request:
          nop
         .size   sun4v_ncs_request, .-sun4v_ncs_request
 
-        .globl  sun4v_scv_send
-        .type   sun4v_scv_send,#function
-sun4v_scv_send:
+        .globl  sun4v_svc_send
+        .type   sun4v_svc_send,#function
+sun4v_svc_send:
         save    %sp, -192, %sp
         mov     %i0, %o0
         mov     %i1, %o1
@@ -2526,11 +2526,11 @@ sun4v_scv_send:
         stx     %o1, [%i3]
         ret
         restore
-        .size   sun4v_scv_send, .-sun4v_scv_send
+        .size   sun4v_svc_send, .-sun4v_svc_send
 
-        .globl  sun4v_scv_recv
-        .type   sun4v_scv_recv,#function
-sun4v_scv_recv:
+        .globl  sun4v_svc_recv
+        .type   sun4v_svc_recv,#function
+sun4v_svc_recv:
         save    %sp, -192, %sp
         mov     %i0, %o0
         mov     %i1, %o1
@@ -2540,33 +2540,55 @@ sun4v_scv_recv:
         stx     %o1, [%i3]
         ret
         restore
-        .size   sun4v_scv_recv, .-sun4v_scv_recv
+        .size   sun4v_svc_recv, .-sun4v_svc_recv
 
-        .globl  sun4v_scv_getstatus
-        .type   sun4v_scv_getstatus,#function
-sun4v_scv_getstatus:
+        .globl  sun4v_svc_getstatus
+        .type   sun4v_svc_getstatus,#function
+sun4v_svc_getstatus:
         mov     HV_FAST_SVC_GETSTATUS, %o5
         mov     %o1, %o4
         ta      HV_FAST_TRAP
         stx     %o1, [%o4]
         retl
          nop
-        .size   sun4v_scv_getstatus, .-sun4v_scv_getstatus
+        .size   sun4v_svc_getstatus, .-sun4v_svc_getstatus
 
-        .globl  sun4v_scv_setstatus
-        .type   sun4v_scv_setstatus,#function
-sun4v_scv_setstatus:
+        .globl  sun4v_svc_setstatus
+        .type   sun4v_svc_setstatus,#function
+sun4v_svc_setstatus:
         mov     HV_FAST_SVC_SETSTATUS, %o5
         ta      HV_FAST_TRAP
         retl
          nop
-        .size   sun4v_scv_setstatus, .-sun4v_scv_setstatus
+        .size   sun4v_svc_setstatus, .-sun4v_svc_setstatus
 
-        .globl  sun4v_scv_clrstatus
-        .type   sun4v_scv_clrstatus,#function
-sun4v_scv_clrstatus:
+        .globl  sun4v_svc_clrstatus
+        .type   sun4v_svc_clrstatus,#function
+sun4v_svc_clrstatus:
         mov     HV_FAST_SVC_CLRSTATUS, %o5
         ta      HV_FAST_TRAP
         retl
          nop
-        .size   sun4v_scv_clrstatus, .-sun4v_scv_clrstatus
+        .size   sun4v_svc_clrstatus, .-sun4v_svc_clrstatus
+
+        .globl  sun4v_mmustat_conf
+        .type   sun4v_mmustat_conf,#function
+sun4v_mmustat_conf:
+        mov     %o1, %o4
+        mov     HV_FAST_MMUSTAT_CONF, %o5
+        ta      HV_FAST_TRAP
+        stx     %o1, [%o4]
+        retl
+         nop
+        .size   sun4v_mmustat_conf, .-sun4v_mmustat_conf
+
+        .globl  sun4v_mmustat_info
+        .type   sun4v_mmustat_info,#function
+sun4v_mmustat_info:
+        mov     %o0, %o4
+        mov     HV_FAST_MMUSTAT_INFO, %o5
+        ta      HV_FAST_TRAP
+        stx     %o1, [%o4]
+        retl
+         nop
+        .size   sun4v_mmustat_info, .-sun4v_mmustat_info
diff --git a/arch/sparc64/kernel/mdesc.c b/arch/sparc64/kernel/mdesc.c
index 9246c2cf9574..f0e16045fb16 100644
--- a/arch/sparc64/kernel/mdesc.c
+++ b/arch/sparc64/kernel/mdesc.c
@@ -473,6 +473,53 @@ static void __init set_core_ids(void)
         }
 }
 
+static void __init mark_proc_ids(struct mdesc_node *mp, int proc_id)
+{
+        int i;
+
+        for (i = 0; i < mp->num_arcs; i++) {
+                struct mdesc_node *t = mp->arcs[i].arc;
+                const u64 *id;
+
+                if (strcmp(mp->arcs[i].name, "back"))
+                        continue;
+
+                if (strcmp(t->name, "cpu"))
+                        continue;
+
+                id = md_get_property(t, "id", NULL);
+                if (*id < NR_CPUS)
+                        cpu_data(*id).proc_id = proc_id;
+        }
+}
+
+static void __init __set_proc_ids(const char *exec_unit_name)
+{
+        struct mdesc_node *mp;
+        int idx;
+
+        idx = 0;
+        md_for_each_node_by_name(mp, exec_unit_name) {
+                const char *type;
+                int len;
+
+                type = md_get_property(mp, "type", &len);
+                if (!find_in_proplist(type, "int", len) &&
+                    !find_in_proplist(type, "integer", len))
+                        continue;
+
+                mark_proc_ids(mp, idx);
+
+                idx++;
+        }
+}
+
+static void __init set_proc_ids(void)
+{
+        __set_proc_ids("exec_unit");
+        __set_proc_ids("exec-unit");
+}
+
 static void __init get_one_mondo_bits(const u64 *p, unsigned int *mask, unsigned char def)
 {
         u64 val;
@@ -574,9 +621,15 @@ static void __init mdesc_fill_in_cpu_data(void)
 #endif
 
                 c->core_id = 0;
+                c->proc_id = -1;
         }
 
+#ifdef CONFIG_SMP
+        sparc64_multi_core = 1;
+#endif
+
         set_core_ids();
+        set_proc_ids();
 
         smp_fill_in_sib_core_maps();
 }
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c
index dad4b3ba705f..6f4a5284b0ea 100644
--- a/arch/sparc64/kernel/prom.c
+++ b/arch/sparc64/kernel/prom.c
@@ -1781,6 +1781,10 @@ static void __init of_fill_in_cpu_data(void)
                         }
 
                         cpu_data(cpuid).core_id = portid + 1;
+                        cpu_data(cpuid).proc_id = portid;
+#ifdef CONFIG_SMP
+                        sparc64_multi_core = 1;
+#endif
                 } else {
                         cpu_data(cpuid).dcache_size =
                                 of_getintprop_default(dp, "dcache-size", 16 * 1024);
@@ -1799,6 +1803,7 @@ static void __init of_fill_in_cpu_data(void)
                                 of_getintprop_default(dp, "ecache-line-size", 64);
 
                         cpu_data(cpuid).core_id = 0;
+                        cpu_data(cpuid).proc_id = -1;
                 }
 
 #ifdef CONFIG_SMP
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index de9b4c13f1c7..7490cc670a53 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -513,22 +513,3 @@ void sun_do_break(void)
 
 int serial_console = -1;
 int stop_a_enabled = 1;
-
-static int __init topology_init(void)
-{
-        int i, err;
-
-        err = -ENOMEM;
-
-        for_each_possible_cpu(i) {
-                struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
-                if (p) {
-                        register_cpu(p, i);
-                        err = 0;
-                }
-        }
-
-        return err;
-}
-
-subsys_initcall(topology_init);
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index c550bba3490a..4dcd7d0b60f2 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -44,6 +44,8 @@
 
 extern void calibrate_delay(void);
 
+int sparc64_multi_core __read_mostly;
+
 /* Please don't make this stuff initdata!!!  --DaveM */
 unsigned char boot_cpu_id;
 
@@ -51,6 +53,8 @@ cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE;
 cpumask_t phys_cpu_present_map __read_mostly = CPU_MASK_NONE;
 cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly =
         { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
+cpumask_t cpu_core_map[NR_CPUS] __read_mostly =
+        { [0 ... NR_CPUS-1] = CPU_MASK_NONE };
 static cpumask_t smp_commenced_mask;
 static cpumask_t cpu_callout_map;
 
@@ -1217,13 +1221,28 @@ void __devinit smp_fill_in_sib_core_maps(void)
                 unsigned int j;
 
                 if (cpu_data(i).core_id == 0) {
-                        cpu_set(i, cpu_sibling_map[i]);
+                        cpu_set(i, cpu_core_map[i]);
                         continue;
                 }
 
                 for_each_possible_cpu(j) {
                         if (cpu_data(i).core_id ==
                             cpu_data(j).core_id)
+                                cpu_set(j, cpu_core_map[i]);
+                }
+        }
+
+        for_each_possible_cpu(i) {
+                unsigned int j;
+
+                if (cpu_data(i).proc_id == -1) {
+                        cpu_set(i, cpu_sibling_map[i]);
+                        continue;
+                }
+
+                for_each_possible_cpu(j) {
+                        if (cpu_data(i).proc_id ==
+                            cpu_data(j).proc_id)
                                 cpu_set(j, cpu_sibling_map[i]);
                 }
         }
diff --git a/arch/sparc64/kernel/sysfs.c b/arch/sparc64/kernel/sysfs.c
new file mode 100644
index 000000000000..cdb1477af89f
--- /dev/null
+++ b/arch/sparc64/kernel/sysfs.c
@@ -0,0 +1,297 @@
+/* sysfs.c: Toplogy sysfs support code for sparc64.
+ *
+ * Copyright (C) 2007 David S. Miller <davem@davemloft.net>
+ */
+#include <linux/sysdev.h>
+#include <linux/cpu.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
+#include <linux/init.h>
+
+#include <asm/hypervisor.h>
+#include <asm/spitfire.h>
+
+static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
+
+#define SHOW_MMUSTAT_ULONG(NAME) \
+static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+{ \
+        struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
+        return sprintf(buf, "%lu\n", p->NAME); \
+} \
+static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)
+
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
+SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);
+
+static struct attribute *mmu_stat_attrs[] = {
+        &attr_immu_tsb_hits_ctx0_8k_tte.attr,
+        &attr_immu_tsb_ticks_ctx0_8k_tte.attr,
+        &attr_immu_tsb_hits_ctx0_64k_tte.attr,
+        &attr_immu_tsb_ticks_ctx0_64k_tte.attr,
+        &attr_immu_tsb_hits_ctx0_4mb_tte.attr,
+        &attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
+        &attr_immu_tsb_hits_ctx0_256mb_tte.attr,
+        &attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
+        &attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
+        &attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
+        &attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
+        &attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
+        &attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
+        &attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
+        &attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
+        &attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
+        &attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
+        &attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
+        &attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
+        &attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
+        &attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
+        &attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
+        &attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
+        &attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
+        &attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
+        &attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
+        &attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
+        &attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
+        &attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
+        &attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
+        &attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
+        &attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
+        NULL,
+};
+
+static struct attribute_group mmu_stat_group = {
+        .attrs = mmu_stat_attrs,
+        .name = "mmu_stats",
+};
+
+/* XXX convert to rusty's on_one_cpu */
+static unsigned long run_on_cpu(unsigned long cpu,
+                                unsigned long (*func)(unsigned long),
+                                unsigned long arg)
+{
+        cpumask_t old_affinity = current->cpus_allowed;
+        unsigned long ret;
+
+        /* should return -EINVAL to userspace */
+        if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
+                return 0;
+
+        ret = func(arg);
+
+        set_cpus_allowed(current, old_affinity);
+
+        return ret;
+}
+
+static unsigned long read_mmustat_enable(unsigned long junk)
+{
+        unsigned long ra = 0;
+
+        sun4v_mmustat_info(&ra);
+
+        return ra != 0;
+}
+
+static unsigned long write_mmustat_enable(unsigned long val)
+{
+        unsigned long ra, orig_ra;
+
+        if (val)
+                ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
+        else
+                ra = 0UL;
+
+        return sun4v_mmustat_conf(ra, &orig_ra);
+}
+
+static ssize_t show_mmustat_enable(struct sys_device *s, char *buf)
+{
+        unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
+        return sprintf(buf, "%lx\n", val);
+}
+
+static ssize_t store_mmustat_enable(struct sys_device *s, const char *buf, size_t count)
+{
+        unsigned long val, err;
+        int ret = sscanf(buf, "%ld", &val);
+
+        if (ret != 1)
+                return -EINVAL;
+
+        err = run_on_cpu(s->id, write_mmustat_enable, val);
+        if (err)
+                return -EIO;
+
+        return count;
+}
+
+static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);
+
+static int mmu_stats_supported;
+
+static int register_mmu_stats(struct sys_device *s)
+{
+        if (!mmu_stats_supported)
+                return 0;
+        sysdev_create_file(s, &attr_mmustat_enable);
+        return sysfs_create_group(&s->kobj, &mmu_stat_group);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void unregister_mmu_stats(struct sys_device *s)
+{
+        if (!mmu_stats_supported)
+                return;
+        sysfs_remove_group(&s->kobj, &mmu_stat_group);
+        sysdev_remove_file(s, &attr_mmustat_enable);
+}
+#endif
+
+#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+{ \
+        cpuinfo_sparc *c = &cpu_data(dev->id); \
+        return sprintf(buf, "%lu\n", c->MEMBER); \
+}
+
+#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
+static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
+{ \
+        cpuinfo_sparc *c = &cpu_data(dev->id); \
+        return sprintf(buf, "%u\n", c->MEMBER); \
+}
+
+SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
+SHOW_CPUDATA_ULONG_NAME(udelay_val, udelay_val);
+SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
+SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
+SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
+SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
+SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
+SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);
+
+static struct sysdev_attribute cpu_core_attrs[] = {
+        _SYSDEV_ATTR(clock_tick,          0444, show_clock_tick, NULL),
+        _SYSDEV_ATTR(udelay_val,          0444, show_udelay_val, NULL),
+        _SYSDEV_ATTR(l1_dcache_size,      0444, show_l1_dcache_size, NULL),
+        _SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
+        _SYSDEV_ATTR(l1_icache_size,      0444, show_l1_icache_size, NULL),
+        _SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
+        _SYSDEV_ATTR(l2_cache_size,       0444, show_l2_cache_size, NULL),
+        _SYSDEV_ATTR(l2_cache_line_size,  0444, show_l2_cache_line_size, NULL),
+};
+
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static void register_cpu_online(unsigned int cpu)
+{
+        struct cpu *c = &per_cpu(cpu_devices, cpu);
+        struct sys_device *s = &c->sysdev;
+        int i;
+
+        for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+                sysdev_create_file(s, &cpu_core_attrs[i]);
+
+        register_mmu_stats(s);
+}
+
+#ifdef CONFIG_HOTPLUG_CPU
+static void unregister_cpu_online(unsigned int cpu)
+{
+        struct cpu *c = &per_cpu(cpu_devices, cpu);
+        struct sys_device *s = &c->sysdev;
+        int i;
+
+        unregister_mmu_stats(s);
+        for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
+                sysdev_remove_file(s, &cpu_core_attrs[i]);
+}
+#endif
+
+static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
+                                      unsigned long action, void *hcpu)
+{
+        unsigned int cpu = (unsigned int)(long)hcpu;
+
+        switch (action) {
+        case CPU_ONLINE:
+        case CPU_ONLINE_FROZEN:
+                register_cpu_online(cpu);
+                break;
+#ifdef CONFIG_HOTPLUG_CPU
+        case CPU_DEAD:
+        case CPU_DEAD_FROZEN:
+                unregister_cpu_online(cpu);
+                break;
+#endif
+        }
+        return NOTIFY_OK;
+}
+
+static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
+        .notifier_call  = sysfs_cpu_notify,
+};
+
+static void __init check_mmu_stats(void)
+{
+        unsigned long dummy1, err;
+
+        if (tlb_type != hypervisor)
+                return;
+
+        err = sun4v_mmustat_info(&dummy1);
+        if (!err)
+                mmu_stats_supported = 1;
+}
+
+static int __init topology_init(void)
+{
+        int cpu;
+
+        check_mmu_stats();
+
+        register_cpu_notifier(&sysfs_cpu_nb);
+
+        for_each_possible_cpu(cpu) {
+                struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+                register_cpu(c, cpu);
+                if (cpu_online(cpu))
+                        register_cpu_online(cpu);
+        }
+
+        return 0;
+}
+
+subsys_initcall(topology_init);
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 7d893a60f994..b4a8d6030e48 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -8,7 +8,6 @@ menuconfig ATA
         depends on BLOCK
         depends on !(M32R || M68K) || BROKEN
         depends on !SUN4 || BROKEN
-        depends on !(SPARC64 && !PCI)
         select SCSI
         ---help---
           If you want to use a ATA hard disk, ATA tape drive, ATA CD-ROM or
diff --git a/drivers/video/console/Makefile b/drivers/video/console/Makefile
index 9b26dda18a38..ac46cc3f6a2a 100644
--- a/drivers/video/console/Makefile
+++ b/drivers/video/console/Makefile
@@ -47,7 +47,7 @@ targets := promcon_tbl.c
 quiet_cmd_conmakehash = CNMKHSH $@
       cmd_conmakehash = scripts/conmakehash $< | \
                 sed -e '/\#include <[^>]*>/p' -e 's/types/init/' \
-                -e 's/dfont\(_uni.*\]\)/promfont\1 __initdata/' > $@
+                -e 's/dfont\(_uni.*\]\)/promfont\1 /' > $@
 
 $(obj)/promcon_tbl.c: $(src)/prom.uni
         $(call cmd,conmakehash)
diff --git a/drivers/video/ffb.c b/drivers/video/ffb.c
index 1d4e8354b561..3f6c98fad437 100644
--- a/drivers/video/ffb.c
+++ b/drivers/video/ffb.c
@@ -656,7 +656,7 @@ static int ffb_setcolreg(unsigned regno,
 {
         u32 value;
 
-        if (regno >= 256)
+        if (regno >= 16)
                 return 1;
 
         red >>= 8;
@@ -903,7 +903,7 @@ ffb_init_fix(struct fb_info *info)
 struct all_info {
         struct fb_info info;
         struct ffb_par par;
-        u32 pseudo_palette[256];
+        u32 pseudo_palette[16];
 };
 
 static int ffb_init_one(struct of_device *op)
diff --git a/drivers/video/sunxvr2500.c b/drivers/video/sunxvr2500.c
index 4316c7fe8e21..c3869a96ab58 100644
--- a/drivers/video/sunxvr2500.c
+++ b/drivers/video/sunxvr2500.c
@@ -28,7 +28,7 @@ struct s3d_info {
         unsigned int            depth;
         unsigned int            fb_size;
 
-        u32                     pseudo_palette[256];
+        u32                     pseudo_palette[16];
 };
 
 static int __devinit s3d_get_props(struct s3d_info *sp)
@@ -52,15 +52,14 @@ static int s3d_setcolreg(unsigned regno,
 {
         u32 value;
 
-        if (regno >= 256)
-                return 1;
+        if (regno < 16) {
+                red >>= 8;
+                green >>= 8;
+                blue >>= 8;
 
-        red >>= 8;
-        green >>= 8;
-        blue >>= 8;
-
-        value = (blue << 24) | (green << 16) | (red << 8);
-        ((u32 *)info->pseudo_palette)[regno] = value;
+                value = (blue << 24) | (green << 16) | (red << 8);
+                ((u32 *)info->pseudo_palette)[regno] = value;
+        }
 
         return 0;
 }
diff --git a/drivers/video/sunxvr500.c b/drivers/video/sunxvr500.c
index 08880a62bfa3..71bf3f1f00bc 100644
--- a/drivers/video/sunxvr500.c
+++ b/drivers/video/sunxvr500.c
@@ -50,7 +50,7 @@ struct e3d_info {
         u32                     fb8_0_off;
         u32                     fb8_1_off;
 
-        u32                     pseudo_palette[256];
+        u32                     pseudo_palette[16];
 };
 
 static int __devinit e3d_get_props(struct e3d_info *ep)
@@ -126,7 +126,9 @@ static int e3d_setcolreg(unsigned regno,
         blue_8 = blue >> 8;
 
         value = (blue_8 << 24) | (green_8 << 16) | (red_8 << 8);
-        ((u32 *)info->pseudo_palette)[regno] = value;
+
+        if (info->fix.visual == FB_VISUAL_TRUECOLOR && regno < 16)
+                ((u32 *)info->pseudo_palette)[regno] = value;
 
 
         red_10 = red >> 6;
diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h
index 03c385de7619..445026fbec35 100644
--- a/include/asm-sparc64/cpudata.h
+++ b/include/asm-sparc64/cpudata.h
@@ -31,7 +31,7 @@ typedef struct {
         unsigned int    ecache_size;
         unsigned int    ecache_line_size;
         int             core_id;
-        unsigned int    __pad3;
+        int             proc_id;
 } cpuinfo_sparc;
 
 DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
diff --git a/include/asm-sparc64/dma-mapping.h b/include/asm-sparc64/dma-mapping.h
index 9329429fb7f6..4e21c2f3065c 100644
--- a/include/asm-sparc64/dma-mapping.h
+++ b/include/asm-sparc64/dma-mapping.h
@@ -162,6 +162,22 @@ dma_mapping_error(dma_addr_t dma_addr)
 #else
 
 struct device;
+struct page;
+struct scatterlist;
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+        BUG();
+        return 0;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 dma_mask)
+{
+        BUG();
+        return 0;
+}
 
 static inline void *dma_alloc_coherent(struct device *dev, size_t size,
                          dma_addr_t *dma_handle, gfp_t flag)
@@ -176,6 +192,52 @@ static inline void dma_free_coherent(struct device *dev, size_t size,
         BUG();
 }
 
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *cpu_addr, size_t size,
+               enum dma_data_direction direction)
+{
+        BUG();
+        return 0;
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+                 enum dma_data_direction direction)
+{
+        BUG();
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page,
+             unsigned long offset, size_t size,
+             enum dma_data_direction direction)
+{
+        BUG();
+        return 0;
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+               enum dma_data_direction direction)
+{
+        BUG();
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+           enum dma_data_direction direction)
+{
+        BUG();
+        return 0;
+}
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+             enum dma_data_direction direction)
+{
+        BUG();
+}
+
 static inline void
 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
                         enum dma_data_direction direction)
@@ -190,6 +252,27 @@ dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t siz
         BUG();
 }
 
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+                    enum dma_data_direction direction)
+{
+        BUG();
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
+                       enum dma_data_direction direction)
+{
+        BUG();
+}
+
+static inline int
+dma_mapping_error(dma_addr_t dma_addr)
+{
+        BUG();
+        return 0;
+}
+
 #endif /* PCI */
 
 
diff --git a/include/asm-sparc64/hypervisor.h b/include/asm-sparc64/hypervisor.h
index 4a43075a0619..5c2f9d4b9f06 100644
--- a/include/asm-sparc64/hypervisor.h
+++ b/include/asm-sparc64/hypervisor.h
@@ -2798,6 +2798,11 @@ struct hv_mmu_statistics {
  */
 #define HV_FAST_MMUSTAT_INFO            0x103
 
+#ifndef __ASSEMBLY__
+extern unsigned long sun4v_mmustat_conf(unsigned long ra, unsigned long *orig_ra);
+extern unsigned long sun4v_mmustat_info(unsigned long *ra);
+#endif
+
 /* NCS crypto services  */
 
 /* ncs_request() sub-function numbers */
diff --git a/include/asm-sparc64/smp.h b/include/asm-sparc64/smp.h
index f76e1492add5..4fb8c4bfb848 100644
--- a/include/asm-sparc64/smp.h
+++ b/include/asm-sparc64/smp.h
@@ -33,6 +33,8 @@ extern cpumask_t phys_cpu_present_map;
 #define cpu_possible_map phys_cpu_present_map
 
 extern cpumask_t cpu_sibling_map[NR_CPUS];
+extern cpumask_t cpu_core_map[NR_CPUS];
+extern int sparc64_multi_core;
 
 /*
  *      General functions that each host system must provide.
diff --git a/include/asm-sparc64/topology.h b/include/asm-sparc64/topology.h
index e0d450d600ec..290ac75f385b 100644
--- a/include/asm-sparc64/topology.h
+++ b/include/asm-sparc64/topology.h
@@ -1,12 +1,17 @@
 #ifndef _ASM_SPARC64_TOPOLOGY_H
 #define _ASM_SPARC64_TOPOLOGY_H
 
-#include <asm/spitfire.h>
-#define smt_capable()   (tlb_type == hypervisor)
+#ifdef CONFIG_SMP
+#define topology_physical_package_id(cpu)       (cpu_data(cpu).proc_id)
+#define topology_core_id(cpu)                   (cpu_data(cpu).core_id)
+#define topology_core_siblings(cpu)             (cpu_core_map[cpu])
+#define topology_thread_siblings(cpu)           (cpu_sibling_map[cpu])
+#define mc_capable()                            (sparc64_multi_core)
+#define smt_capable()                           (sparc64_multi_core)
+#endif /* CONFIG_SMP */
 
 #include <asm-generic/topology.h>
 
-#define topology_core_id(cpu)                   (cpu_data(cpu).core_id)
-#define topology_thread_siblings(cpu)           (cpu_sibling_map[cpu])
+#define cpu_coregroup_map(cpu)                  (cpu_core_map[cpu])
 
 #endif /* _ASM_SPARC64_TOPOLOGY_H */