@@ -2934,6 +2934,16 @@ extern unsigned long sun4v_reboot_data_set(unsigned long ra,
unsigned long len);
#endif
+#define HV_FAST_VT_GET_PERFREG 0x184
+#define HV_FAST_VT_SET_PERFREG 0x185
+
+#ifndef __ASSEMBLY__
+extern unsigned long sun4v_vt_get_perfreg(unsigned long reg_num,
+ unsigned long *reg_val);
+extern unsigned long sun4v_vt_set_perfreg(unsigned long reg_num,
+ unsigned long reg_val);
+#endif
+
/* Function numbers for HV_CORE_TRAP. */
#define HV_CORE_SET_VER 0x00
#define HV_CORE_PUTCHAR 0x01
@@ -2964,6 +2974,7 @@ extern unsigned long sun4v_reboot_data_set(unsigned long ra,
#define HV_GRP_NIU 0x0204
#define HV_GRP_VF_CPU 0x0205
#define HV_GRP_KT_CPU 0x0209
+#define HV_GRP_VT_CPU 0x020c
#define HV_GRP_DIAG 0x0300
#ifndef __ASSEMBLY__
@@ -45,6 +45,7 @@ static struct api_info api_table[] = {
{ .group = HV_GRP_NIU, },
{ .group = HV_GRP_VF_CPU, },
{ .group = HV_GRP_KT_CPU, },
+ { .group = HV_GRP_VT_CPU, },
{ .group = HV_GRP_DIAG, .flags = FLAG_PRE_API },
};
@@ -805,3 +805,19 @@ ENTRY(sun4v_reboot_data_set)
retl
nop
ENDPROC(sun4v_reboot_data_set)
+
+ENTRY(sun4v_vt_get_perfreg)
+ mov %o1, %o4
+ mov HV_FAST_VT_GET_PERFREG, %o5
+ ta HV_FAST_TRAP
+ stx %o1, [%o4]
+ retl
+ nop
+ENDPROC(sun4v_vt_get_perfreg)
+
+ENTRY(sun4v_vt_set_perfreg)
+ mov HV_FAST_VT_SET_PERFREG, %o5
+ ta HV_FAST_TRAP
+ retl
+ nop
+ENDPROC(sun4v_vt_set_perfreg)
Unlike for previous chips, access to the perf-counter control registers are all hyper-privileged. Therefore, access to them must go through a hypervisor interface. Signed-off-by: David S. Miller <davem@davemloft.net> --- arch/sparc/include/asm/hypervisor.h | 11 +++++++++++ arch/sparc/kernel/hvapi.c | 1 + arch/sparc/kernel/hvcalls.S | 16 ++++++++++++++++ 3 files changed, 28 insertions(+)