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authorDavid S. Miller <davem@sunset.davemloft.net>2006-02-15 13:26:54 +0300
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 12:13:04 +0300
commit7890f794e0e6f7dce2a5f4a03ba64b0b3fe306bd (patch)
treea9cc7c67498616a47108c667a9c001f9fe468318
parent63c2a0e598c2fa769a08a6e9ad124bf270b4436e (diff)
downloadlinux-7890f794e0e6f7dce2a5f4a03ba64b0b3fe306bd.tar.xz
[SPARC64]: Add prom_{start,stop}cpu_cpuid().
Use prom_startcpu_cpuid() on SUN4V instead of prom_startcpu(). We should really test for "SUNW,start-cpu-by-cpuid" presence and use it if present even on SUN4U. Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc64/kernel/smp.c12
-rw-r--r--arch/sparc64/prom/misc.c16
-rw-r--r--include/asm-sparc64/oplib.h14
3 files changed, 34 insertions, 8 deletions
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 64046d37bbf0..527dfd7ae210 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -331,15 +331,21 @@ static int __devinit smp_boot_one_cpu(unsigned int cpu)
unsigned long cookie =
(unsigned long)(&cpu_new_thread);
struct task_struct *p;
- int timeout, ret, cpu_node;
+ int timeout, ret;
p = fork_idle(cpu);
callin_flag = 0;
cpu_new_thread = task_thread_info(p);
cpu_set(cpu, cpu_callout_map);
- cpu_find_by_mid(cpu, &cpu_node);
- prom_startcpu(cpu_node, entry, cookie);
+ if (tlb_type == hypervisor) {
+ prom_startcpu_cpuid(cpu, entry, cookie);
+ } else {
+ int cpu_node;
+
+ cpu_find_by_mid(cpu, &cpu_node);
+ prom_startcpu(cpu_node, entry, cookie);
+ }
for (timeout = 0; timeout < 5000000; timeout++) {
if (callin_flag)
diff --git a/arch/sparc64/prom/misc.c b/arch/sparc64/prom/misc.c
index 713cbac5f9bf..36d2b9c1622d 100644
--- a/arch/sparc64/prom/misc.c
+++ b/arch/sparc64/prom/misc.c
@@ -308,9 +308,21 @@ int prom_wakeupsystem(void)
}
#ifdef CONFIG_SMP
-void prom_startcpu(int cpunode, unsigned long pc, unsigned long o0)
+void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg)
{
- p1275_cmd("SUNW,start-cpu", P1275_INOUT(3, 0), cpunode, pc, o0);
+ p1275_cmd("SUNW,start-cpu", P1275_INOUT(3, 0), cpunode, pc, arg);
+}
+
+void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg)
+{
+ p1275_cmd("SUNW,start-cpu-by-cpuid", P1275_INOUT(3, 0),
+ cpuid, pc, arg);
+}
+
+void prom_stopcpu_cpuid(int cpuid)
+{
+ p1275_cmd("SUNW,stop-cpu-by-cpuid", P1275_INOUT(1, 0),
+ cpuid);
}
void prom_stopself(void)
diff --git a/include/asm-sparc64/oplib.h b/include/asm-sparc64/oplib.h
index 0631d13475f2..84618f8a9e6e 100644
--- a/include/asm-sparc64/oplib.h
+++ b/include/asm-sparc64/oplib.h
@@ -188,10 +188,18 @@ extern enum prom_output_device prom_query_output_device(void);
/* Multiprocessor operations... */
#ifdef CONFIG_SMP
-/* Start the CPU with the given device tree node, context table, and context
- * at the passed program counter.
+/* Start the CPU with the given device tree node at the passed program
+ * counter with the given arg passed in via register %o0.
*/
-extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long o0);
+extern void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg);
+
+/* Start the CPU with the given cpu ID at the passed program
+ * counter with the given arg passed in via register %o0.
+ */
+extern void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg);
+
+/* Stop the CPU with the given cpu ID. */
+extern void prom_stopcpu_cpuid(int cpuid);
/* Stop the current CPU. */
extern void prom_stopself(void);