[POWERPC] Add SPURR SPR to sysfs

Now we have a SPURR cpu feature bit, we can export it to userspace in
sysfs.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 22daba56c865a304075582126426c61f958801ee..400ab2b946e760964bd164f282ec1f270579ac6a 100644 (file)
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -181,6 +181,7 @@ SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
 SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
 SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
 SYSFS_PMCSETUP(purr, SPRN_PURR);
+SYSFS_PMCSETUP(spurr, SPRN_SPURR);
 SYSFS_PMCSETUP(dscr, SPRN_DSCR);
 
 static SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0);
@@ -195,6 +196,7 @@ static SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6);
 static SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7);
 static SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8);
 static SYSDEV_ATTR(purr, 0600, show_purr, NULL);
+static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);
 static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);
 
 static void register_cpu_online(unsigned int cpu)
@@ -234,6 +236,9 @@ static void register_cpu_online(unsigned int cpu)
        if (cpu_has_feature(CPU_FTR_PURR))
                sysdev_create_file(s, &attr_purr);
 
+       if (cpu_has_feature(CPU_FTR_SPURR))
+               sysdev_create_file(s, &attr_spurr);
+
        if (cpu_has_feature(CPU_FTR_DSCR))
                sysdev_create_file(s, &attr_dscr);
 }
@@ -278,6 +283,9 @@ static void unregister_cpu_online(unsigned int cpu)
        if (cpu_has_feature(CPU_FTR_PURR))
                sysdev_remove_file(s, &attr_purr);
 
+       if (cpu_has_feature(CPU_FTR_SPURR))
+               sysdev_remove_file(s, &attr_spurr);
+
        if (cpu_has_feature(CPU_FTR_DSCR))
                sysdev_remove_file(s, &attr_dscr);
 }

diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index cacdecca610c0c023719799a79778e1e97c0b96e..a3631b15754ca39bfd49984d631635e56b8f8cf2 100644 (file)
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -164,6 +164,7 @@
 #define SPRN_TBRU      0x10D   /* Time Base Read Upper Register (user, R/O) */
 #define SPRN_TBWL      0x11C   /* Time Base Lower Register (super, R/W) */
 #define SPRN_TBWU      0x11D   /* Time Base Upper Register (super, R/W) */
+#define SPRN_SPURR     0x134   /* Scaled PURR */
 #define SPRN_HIOR      0x137   /* 970 Hypervisor interrupt offset */
 #define SPRN_DBAT0L    0x219   /* Data BAT 0 Lower Register */
 #define SPRN_DBAT0U    0x218   /* Data BAT 0 Upper Register */