target/loongarch: Add PMU register dump support in KVM

PMU is supported in KVM mode. With info registers command, PMU CSR
registers should be dumped also. And it is not necessary in TCG mode.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 67ad9c3b792b4b3d33e9ce3bff5c771805fc2c9a..b65394852669e2f5b7cc8d287f441f405ca97077 100644 (file)
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -129,6 +129,11 @@ static void loongarch_la464_init_csr(DeviceState *dev)
         set_csr_flag(LOONGARCH_CSR_MERRERA, CSRFL_UNUSED);
         set_csr_flag(LOONGARCH_CSR_MERRSAVE, CSRFL_UNUSED);
         set_csr_flag(LOONGARCH_CSR_CTAG, CSRFL_UNUSED);
+
+        for (i = env->perf_event_num; i < MAX_PERF_EVENTS; i++) {
+            set_csr_flag(LOONGARCH_CSR_PERFCTRL(i), CSRFL_UNUSED);
+            set_csr_flag(LOONGARCH_CSR_PERFCNTR(i), CSRFL_UNUSED);
+        }
     }
 #endif
 }

diff --git a/target/loongarch/csr.c b/target/loongarch/csr.c
index f973780bba367e17fc2292a813ff58ad67b9d134..332a1396cc21aaa99f628e2c73908a6d5af0e595 100644 (file)
--- a/target/loongarch/csr.c
+++ b/target/loongarch/csr.c
@@ -94,6 +94,38 @@ static CSRInfo csr_info[] = {
     CSR_OFF_ARRAY(DMW, 1),
     CSR_OFF_ARRAY(DMW, 2),
     CSR_OFF_ARRAY(DMW, 3),
+    CSR_OFF_ARRAY(PERFCTRL, 0),
+    CSR_OFF_ARRAY(PERFCNTR, 0),
+    CSR_OFF_ARRAY(PERFCTRL, 1),
+    CSR_OFF_ARRAY(PERFCNTR, 1),
+    CSR_OFF_ARRAY(PERFCTRL, 2),
+    CSR_OFF_ARRAY(PERFCNTR, 2),
+    CSR_OFF_ARRAY(PERFCTRL, 3),
+    CSR_OFF_ARRAY(PERFCNTR, 3),
+    CSR_OFF_ARRAY(PERFCTRL, 4),
+    CSR_OFF_ARRAY(PERFCNTR, 4),
+    CSR_OFF_ARRAY(PERFCTRL, 5),
+    CSR_OFF_ARRAY(PERFCNTR, 5),
+    CSR_OFF_ARRAY(PERFCTRL, 6),
+    CSR_OFF_ARRAY(PERFCNTR, 6),
+    CSR_OFF_ARRAY(PERFCTRL, 7),
+    CSR_OFF_ARRAY(PERFCNTR, 7),
+    CSR_OFF_ARRAY(PERFCTRL, 8),
+    CSR_OFF_ARRAY(PERFCNTR, 8),
+    CSR_OFF_ARRAY(PERFCTRL, 9),
+    CSR_OFF_ARRAY(PERFCNTR, 9),
+    CSR_OFF_ARRAY(PERFCTRL, 10),
+    CSR_OFF_ARRAY(PERFCNTR, 10),
+    CSR_OFF_ARRAY(PERFCTRL, 11),
+    CSR_OFF_ARRAY(PERFCNTR, 11),
+    CSR_OFF_ARRAY(PERFCTRL, 12),
+    CSR_OFF_ARRAY(PERFCNTR, 12),
+    CSR_OFF_ARRAY(PERFCTRL, 13),
+    CSR_OFF_ARRAY(PERFCNTR, 13),
+    CSR_OFF_ARRAY(PERFCTRL, 14),
+    CSR_OFF_ARRAY(PERFCNTR, 14),
+    CSR_OFF_ARRAY(PERFCTRL, 15),
+    CSR_OFF_ARRAY(PERFCNTR, 15),
     CSR_OFF(DBG),
     CSR_OFF(DERA),
     CSR_OFF(DSAVE),