drm/amdgpu: add mes_kiq module parameter v2

mes_kiq parameter is used to enable mes kiq pipe.
This module parameter is unneccessary or enabled by default
in final version.

v2: reword commit message.
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -208,6 +208,7 @@ extern int amdgpu_async_gfx_ring;
 extern int amdgpu_mcbp;
 extern int amdgpu_discovery;
 extern int amdgpu_mes;
+extern int amdgpu_mes_kiq;
 extern int amdgpu_noretry;
 extern int amdgpu_force_asic_type;
 extern int amdgpu_smartshift_bias;
@@ -940,6 +941,7 @@ struct amdgpu_device {
 
 	/* mes */
 	bool                            enable_mes;
+	bool                            enable_mes_kiq;
 	struct amdgpu_mes               mes;
 	struct amdgpu_mqd               mqds[AMDGPU_HW_IP_NUM];
 

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -3670,8 +3670,13 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	if (amdgpu_mcbp)
 		DRM_INFO("MCBP is enabled\n");
 
-	if (amdgpu_mes && adev->asic_type >= CHIP_NAVI10)
-		adev->enable_mes = true;
+	if (adev->asic_type >= CHIP_NAVI10) {
+		if (amdgpu_mes || amdgpu_mes_kiq)
+			adev->enable_mes = true;
+
+		if (amdgpu_mes_kiq)
+			adev->enable_mes_kiq = true;
+	}
 
 	/*
 	 * Reset domain needs to be present early, before XGMI hive discovered

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -171,6 +171,7 @@ int amdgpu_async_gfx_ring = 1;
 int amdgpu_mcbp;
 int amdgpu_discovery = -1;
 int amdgpu_mes;
+int amdgpu_mes_kiq;
 int amdgpu_noretry = -1;
 int amdgpu_force_asic_type = -1;
 int amdgpu_tmz = -1; /* auto */
@@ -636,6 +637,15 @@ MODULE_PARM_DESC(mes,
 	"Enable Micro Engine Scheduler (0 = disabled (default), 1 = enabled)");
 module_param_named(mes, amdgpu_mes, int, 0444);
 
+/**
+ * DOC: mes_kiq (int)
+ * Enable Micro Engine Scheduler KIQ. This is a new engine pipe for kiq.
+ * (0 = disabled (default), 1 = enabled)
+ */
+MODULE_PARM_DESC(mes_kiq,
+	"Enable Micro Engine Scheduler KIQ (0 = disabled (default), 1 = enabled)");
+module_param_named(mes_kiq, amdgpu_mes_kiq, int, 0444);
+
 /**
  * DOC: noretry (int)
  * Disable XNACK retry in the SQ by default on GFXv9 hardware. On ASICs that