drm/amd/display: Add Support for reg inbox0 for host->DMUB CMDs

[WHY]
DCN4+ supports a new register based mailbox for sending messages
from host to DMCUB. This mailbox supports 64 byte commands, which makes
it compatible with the same structure as the frame buffer based mailbox.

[HOW]
The intention for reg_inbox0 is to be slot in replacement for the frame
buffer based mailbox (Inbox1). It supports all of the required features:
- Supports all messages handled by FB Inbox1
- Supports multi command batching

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 15 insertions, 7 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c
index 0d7e7f3b81a1..a641ae04450c 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm_lcd.c
@@ -240,7 +240,8 @@ bool dmub_abm_save_restore(
 	cmd.abm_save_restore.abm_init_config_data.version = DMUB_CMD_ABM_CONTROL_VERSION_1;
 	cmd.abm_save_restore.abm_init_config_data.panel_mask = panel_mask;
 
-	cmd.abm_save_restore.header.payload_bytes = sizeof(struct dmub_rb_cmd_abm_save_restore);
+	cmd.abm_save_restore.header.payload_bytes =
+			sizeof(struct dmub_rb_cmd_abm_save_restore) - sizeof(struct dmub_cmd_header);
 
 	dc_wake_and_execute_dmub_cmd(dc, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c
index c31e4f26a305..fcd3d86ad517 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_replay.c
@@ -280,7 +280,9 @@ static void dmub_replay_set_power_opt_and_coasting_vtotal(struct dmub_replay *dm
 	memset(&cmd, 0, sizeof(cmd));
 	pCmd->header.type = DMUB_CMD__REPLAY;
 	pCmd->header.sub_type = DMUB_CMD__REPLAY_SET_POWER_OPT_AND_COASTING_VTOTAL;
-	pCmd->header.payload_bytes = sizeof(struct dmub_rb_cmd_replay_set_power_opt_and_coasting_vtotal);
+	pCmd->header.payload_bytes =
+			sizeof(struct dmub_rb_cmd_replay_set_power_opt_and_coasting_vtotal) -
+			sizeof(struct dmub_cmd_header);
 	pCmd->replay_set_power_opt_data.power_opt = power_opt;
 	pCmd->replay_set_power_opt_data.panel_inst = panel_inst;
 	pCmd->replay_set_coasting_vtotal_data.coasting_vtotal = (coasting_vtotal & 0xFFFF);
@@ -319,7 +321,8 @@ static void dmub_replay_send_cmd(struct dmub_replay *dmub,
 		cmd.replay_set_timing_sync.header.sub_type =
 			DMUB_CMD__REPLAY_SET_TIMING_SYNC_SUPPORTED;
 		cmd.replay_set_timing_sync.header.payload_bytes =
-			sizeof(struct dmub_rb_cmd_replay_set_timing_sync);
+			sizeof(struct dmub_rb_cmd_replay_set_timing_sync) -
+			sizeof(struct dmub_cmd_header);
 		//Cmd Body
 		cmd.replay_set_timing_sync.replay_set_timing_sync_data.panel_inst =
 						cmd_element->sync_data.panel_inst;
@@ -331,7 +334,8 @@ static void dmub_replay_send_cmd(struct dmub_replay *dmub,
 		cmd.replay_set_frameupdate_timer.header.sub_type =
 			DMUB_CMD__REPLAY_SET_RESIDENCY_FRAMEUPDATE_TIMER;
 		cmd.replay_set_frameupdate_timer.header.payload_bytes =
-			sizeof(struct dmub_rb_cmd_replay_set_frameupdate_timer);
+			sizeof(struct dmub_rb_cmd_replay_set_frameupdate_timer) -
+			sizeof(struct dmub_cmd_header);
 		//Cmd Body
 		cmd.replay_set_frameupdate_timer.data.panel_inst =
 						cmd_element->panel_inst;
@@ -345,7 +349,8 @@ static void dmub_replay_send_cmd(struct dmub_replay *dmub,
 		cmd.replay_set_pseudo_vtotal.header.sub_type =
 			DMUB_CMD__REPLAY_SET_PSEUDO_VTOTAL;
 		cmd.replay_set_pseudo_vtotal.header.payload_bytes =
-			sizeof(struct dmub_rb_cmd_replay_set_pseudo_vtotal);
+			sizeof(struct dmub_rb_cmd_replay_set_pseudo_vtotal) -
+			sizeof(struct dmub_cmd_header);
 		//Cmd Body
 		cmd.replay_set_pseudo_vtotal.data.panel_inst =
 			cmd_element->pseudo_vtotal_data.panel_inst;
@@ -357,7 +362,8 @@ static void dmub_replay_send_cmd(struct dmub_replay *dmub,
 		cmd.replay_disabled_adaptive_sync_sdp.header.sub_type =
 			DMUB_CMD__REPLAY_DISABLED_ADAPTIVE_SYNC_SDP;
 		cmd.replay_disabled_adaptive_sync_sdp.header.payload_bytes =
-			sizeof(struct dmub_rb_cmd_replay_disabled_adaptive_sync_sdp);
+			sizeof(struct dmub_rb_cmd_replay_disabled_adaptive_sync_sdp) -
+			sizeof(struct dmub_cmd_header);
 		//Cmd Body
 		cmd.replay_disabled_adaptive_sync_sdp.data.panel_inst =
 			cmd_element->disabled_adaptive_sync_sdp_data.panel_inst;
@@ -369,7 +375,8 @@ static void dmub_replay_send_cmd(struct dmub_replay *dmub,
 		cmd.replay_set_general_cmd.header.sub_type =
 			DMUB_CMD__REPLAY_SET_GENERAL_CMD;
 		cmd.replay_set_general_cmd.header.payload_bytes =
-			sizeof(struct dmub_rb_cmd_replay_set_general_cmd);
+			sizeof(struct dmub_rb_cmd_replay_set_general_cmd) -
+			sizeof(struct dmub_cmd_header);
 		//Cmd Body
 		cmd.replay_set_general_cmd.data.panel_inst =
 			cmd_element->set_general_cmd_data.panel_inst;