amd,radv,radeonsi: add ac_emit_cp_inhibit_clockgating()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37956>

src/amd/common/ac_cmdbuf_cp.c

@@ -483,3 +483,21 @@ ac_emit_cp_load_context_reg_index(struct ac_cmdbuf *cs, uint32_t reg,
    ac_cmdbuf_emit(reg_count); /* in DWORDS */
    ac_cmdbuf_end();
 }
+
+void
+ac_emit_cp_inhibit_clockgating(struct ac_cmdbuf *cs, enum amd_gfx_level gfx_level,
+                               bool inhibit)
+{
+   if (gfx_level >= GFX11)
+      return; /* not needed */
+
+   ac_cmdbuf_begin(cs);
+   if (gfx_level >= GFX10) {
+      ac_cmdbuf_set_uconfig_reg(R_037390_RLC_PERFMON_CLK_CNTL,
+                                S_037390_PERFMON_CLOCK_STATE(inhibit));
+   } else if (gfx_level >= GFX8) {
+      ac_cmdbuf_set_uconfig_reg(R_0372FC_RLC_PERFMON_CLK_CNTL,
+                                S_0372FC_PERFMON_CLOCK_STATE(inhibit));
+   }
+   ac_cmdbuf_end();
+}

src/amd/common/ac_cmdbuf_cp.h

@@ -112,6 +112,10 @@ ac_emit_cp_load_context_reg_index(struct ac_cmdbuf *cs, uint32_t reg,
                                   uint32_t reg_count, uint64_t va,
                                   bool predicate);
 
+void
+ac_emit_cp_inhibit_clockgating(struct ac_cmdbuf *cs, enum amd_gfx_level gfx_level,
+                               bool inhibit);
+
 #ifdef __cplusplus
 }
 #endif