drm/amdgpu/nbio7.4: don't use GPU_HDP_FLUSH bit 12

It's used internally by firmware.  Using it in the driver
could conflict with firmware.
Reviewed-by: NJames Zhu <James.Zhu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c

@@ -56,12 +56,15 @@
  * These are nbio v7_4_1 registers mask. Temporarily define these here since
  * nbio v7_4_1 header is incomplete.
  */
-#define GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK	0x00001000L
+#define GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK	0x00001000L /* Don't use.  Firmware uses this bit internally */
 #define GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK	0x00002000L
 #define GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK	0x00004000L
 #define GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK	0x00008000L
 #define GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK	0x00010000L
 #define GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK	0x00020000L
+#define GPU_HDP_FLUSH_DONE__RSVD_ENG6_MASK	0x00040000L
+#define GPU_HDP_FLUSH_DONE__RSVD_ENG7_MASK	0x00080000L
+#define GPU_HDP_FLUSH_DONE__RSVD_ENG8_MASK	0x00100000L
 
 #define mmBIF_MMSCH1_DOORBELL_RANGE                     0x01dc
 #define mmBIF_MMSCH1_DOORBELL_RANGE_BASE_IDX            2
@@ -332,14 +335,14 @@ const struct nbio_hdp_flush_reg nbio_v7_4_hdp_flush_reg = {
 	.ref_and_mask_cp7 = GPU_HDP_FLUSH_DONE__CP7_MASK,
 	.ref_and_mask_cp8 = GPU_HDP_FLUSH_DONE__CP8_MASK,
 	.ref_and_mask_cp9 = GPU_HDP_FLUSH_DONE__CP9_MASK,
-	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__SDMA0_MASK,
-	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK,
-	.ref_and_mask_sdma2 = GPU_HDP_FLUSH_DONE__RSVD_ENG0_MASK,
-	.ref_and_mask_sdma3 = GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK,
-	.ref_and_mask_sdma4 = GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK,
-	.ref_and_mask_sdma5 = GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK,
-	.ref_and_mask_sdma6 = GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK,
-	.ref_and_mask_sdma7 = GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK,
+	.ref_and_mask_sdma0 = GPU_HDP_FLUSH_DONE__RSVD_ENG1_MASK,
+	.ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__RSVD_ENG2_MASK,
+	.ref_and_mask_sdma2 = GPU_HDP_FLUSH_DONE__RSVD_ENG3_MASK,
+	.ref_and_mask_sdma3 = GPU_HDP_FLUSH_DONE__RSVD_ENG4_MASK,
+	.ref_and_mask_sdma4 = GPU_HDP_FLUSH_DONE__RSVD_ENG5_MASK,
+	.ref_and_mask_sdma5 = GPU_HDP_FLUSH_DONE__RSVD_ENG6_MASK,
+	.ref_and_mask_sdma6 = GPU_HDP_FLUSH_DONE__RSVD_ENG7_MASK,
+	.ref_and_mask_sdma7 = GPU_HDP_FLUSH_DONE__RSVD_ENG8_MASK,
 };
 
 static void nbio_v7_4_init_registers(struct amdgpu_device *adev)