[PATCH 07/24] drm/amd/display: Add DC_BLS command

From: Ovidiu Bunea <[email protected]>

[why & how]
In the future, DC will off-load block-level initialization to DMUB.

In preparation, update dmub_cmd.h with the command for better tracking.

Reviewed-by: Nicholas Kazlauskas <[email protected]>
Signed-off-by: Ovidiu Bunea <[email protected]>
Signed-off-by: James Lin <[email protected]>
---
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index f0231f355fa7..c273d97ec88d 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -1169,6 +1169,16 @@ enum dmub_ips_comand_type {
 	DMUB_CMD__IPS_QUERY_RESIDENCY_INFO = 1,
 };
 
+/**
+ * enum dmub_dc_bls_command_type - DC_BLS subcommands.
+ */
+enum dmub_dc_bls_command_type {
+	/**
+	 * Placeholder for block-level initialization of the DCHVM
+	 */
+	DMUB_CMD__DC_BLS_DCHVM_INIT = 0,
+};
+
 /**
  * enum dmub_cursor_offload_comand_type - Cursor offload subcommands.
  */
@@ -2008,6 +2018,11 @@ enum dmub_cmd_type {
 	 */
 	DMUB_CMD__PANEL_POLARITY = 97,
 
+	/**
+	 * Command type used for all DC_BLS commands.
+	 */
+	DMUB_CMD__DC_BLS = 98,
+
 	/**
 	 * Command type use for VBIOS shared commands.
 	 */
@@ -2940,6 +2955,25 @@ struct dmub_rb_cmd_idle_opt_dcn_notify_idle {
 	struct dmub_dcn_notify_idle_cntl_data cntl_data;
 };
 
+/**
+ * Data passed from driver to FW in a DMUB_CMD__DC_BLS_DCHVM_INIT command.
+ */
+struct dmub_cmd_dc_bls_dchvm_init_data {
+	/**
+	 * The value to program to rIOMMU PCTRL register. x86 cannot access this SMN
+	 * register, so the write is performed by DMCUB on the driver's behalf.
+	 */
+	uint32_t riommu_pctrl_val; /* r */
+};
+
+/**
+ * Definition of a DMUB_CMD__DC_BLS_DCHVM_INIT command.
+ */
+struct dmub_rb_cmd_dc_bls_dchvm_init {
+	struct dmub_cmd_header header;
+	struct dmub_cmd_dc_bls_dchvm_init_data data;
+};
+
 /**
  * enum dmub_idle_opt_dc_power_state - DC power states.
  */
@@ -7988,6 +8022,8 @@ union dmub_rb_cmd {
 	struct dmub_rb_cmd_panel_polarity_enable panel_polarity_enable;
 	struct dmub_rb_cmd_panel_polarity_get_bias panel_polarity_get_bias;
 	struct dmub_rb_cmd_panel_polarity_reset panel_polarity_reset;
+
+	struct dmub_rb_cmd_dc_bls_dchvm_init dc_bls_dchvm_init;
 };
 
 /**
-- 
2.43.0