drm/amd/display: get board layout for edid emulation

Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

5 files changed, 474 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
index c7f0b27e457e..be8a2494355a 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser.c
@@ -3762,6 +3762,200 @@ static struct integrated_info *bios_parser_create_integrated_info(
         return NULL;
 }
 
+enum bp_result update_slot_layout_info(
+        struct dc_bios *dcb,
+        unsigned int i,
+        struct slot_layout_info *slot_layout_info,
+        unsigned int record_offset)
+{
+        unsigned int j;
+        struct bios_parser *bp;
+        ATOM_BRACKET_LAYOUT_RECORD *record;
+        ATOM_COMMON_RECORD_HEADER *record_header;
+        enum bp_result result = BP_RESULT_NORECORD;
+
+        bp = BP_FROM_DCB(dcb);
+        record = NULL;
+        record_header = NULL;
+
+        for (;;) {
+
+                record_header = (ATOM_COMMON_RECORD_HEADER *)
+                        GET_IMAGE(ATOM_COMMON_RECORD_HEADER, record_offset);
+                if (record_header == NULL) {
+                        result = BP_RESULT_BADBIOSTABLE;
+                        break;
+                }
+
+                /* the end of the list */
+                if (record_header->ucRecordType == 0xff ||
+                        record_header->ucRecordSize == 0)       {
+                        break;
+                }
+
+                if (record_header->ucRecordType ==
+                        ATOM_BRACKET_LAYOUT_RECORD_TYPE &&
+                        sizeof(ATOM_BRACKET_LAYOUT_RECORD)
+                        <= record_header->ucRecordSize) {
+                        record = (ATOM_BRACKET_LAYOUT_RECORD *)
+                                (record_header);
+                        result = BP_RESULT_OK;
+                        break;
+                }
+
+                record_offset += record_header->ucRecordSize;
+        }
+
+        /* return if the record not found */
+        if (result != BP_RESULT_OK)
+                return result;
+
+        /* get slot sizes */
+        slot_layout_info->length = record->ucLength;
+        slot_layout_info->width = record->ucWidth;
+
+        /* get info for each connector in the slot */
+        slot_layout_info->num_of_connectors = record->ucConnNum;
+        for (j = 0; j < slot_layout_info->num_of_connectors; ++j) {
+                slot_layout_info->connectors[j].connector_type =
+                        (enum connector_layout_type)
+                        (record->asConnInfo[j].ucConnectorType);
+                switch (record->asConnInfo[j].ucConnectorType) {
+                case CONNECTOR_TYPE_DVI_D:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_DVI_D;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_DVI;
+                        break;
+
+                case CONNECTOR_TYPE_HDMI:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_HDMI;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_HDMI;
+                        break;
+
+                case CONNECTOR_TYPE_DISPLAY_PORT:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_DP;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_DP;
+                        break;
+
+                case CONNECTOR_TYPE_MINI_DISPLAY_PORT:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_MINI_DP;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_MINI_DP;
+                        break;
+
+                default:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_UNKNOWN;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_UNKNOWN;
+                }
+
+                slot_layout_info->connectors[j].position =
+                        record->asConnInfo[j].ucPosition;
+                slot_layout_info->connectors[j].connector_id =
+                        object_id_from_bios_object_id(
+                                record->asConnInfo[j].usConnectorObjectId);
+        }
+        return result;
+}
+
+
+enum bp_result get_bracket_layout_record(
+        struct dc_bios *dcb,
+        unsigned int bracket_layout_id,
+        struct slot_layout_info *slot_layout_info)
+{
+        unsigned int i;
+        unsigned int record_offset;
+        struct bios_parser *bp;
+        enum bp_result result;
+        ATOM_OBJECT *object;
+        ATOM_OBJECT_TABLE *object_table;
+        unsigned int genericTableOffset;
+
+        bp = BP_FROM_DCB(dcb);
+        object = NULL;
+        if (slot_layout_info == NULL) {
+                DC_LOG_DETECTION_EDID_PARSER("Invalid slot_layout_info\n");
+                return BP_RESULT_BADINPUT;
+        }
+
+
+        genericTableOffset = bp->object_info_tbl_offset +
+                bp->object_info_tbl.v1_3->usMiscObjectTableOffset;
+        object_table = (ATOM_OBJECT_TABLE *)
+                GET_IMAGE(ATOM_OBJECT_TABLE, genericTableOffset);
+        if (!object_table)
+                return BP_RESULT_FAILURE;
+
+        result = BP_RESULT_NORECORD;
+        for (i = 0; i < object_table->ucNumberOfObjects; ++i) {
+
+                if (bracket_layout_id ==
+                        object_table->asObjects[i].usObjectID) {
+
+                        object = &object_table->asObjects[i];
+                        record_offset = object->usRecordOffset +
+                                bp->object_info_tbl_offset;
+
+                        result = update_slot_layout_info(dcb, i,
+                                slot_layout_info, record_offset);
+                        break;
+                }
+        }
+        return result;
+}
+
+static enum bp_result bios_get_board_layout_info(
+        struct dc_bios *dcb,
+        struct board_layout_info *board_layout_info)
+{
+        unsigned int i;
+        struct bios_parser *bp;
+        enum bp_result record_result;
+
+        const unsigned int slot_index_to_vbios_id[MAX_BOARD_SLOTS] = {
+                GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1,
+                GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2,
+                0, 0
+        };
+
+        bp = BP_FROM_DCB(dcb);
+        if (board_layout_info == NULL) {
+                DC_LOG_DETECTION_EDID_PARSER("Invalid board_layout_info\n");
+                return BP_RESULT_BADINPUT;
+        }
+
+        board_layout_info->num_of_slots = 0;
+
+        for (i = 0; i < MAX_BOARD_SLOTS; ++i) {
+                record_result = get_bracket_layout_record(dcb,
+                        slot_index_to_vbios_id[i],
+                        &board_layout_info->slots[i]);
+
+                if (record_result == BP_RESULT_NORECORD && i > 0)
+                        break; /* no more slots present in bios */
+                else if (record_result != BP_RESULT_OK)
+                        return record_result;  /* fail */
+
+                ++board_layout_info->num_of_slots;
+        }
+
+        /* all data is valid */
+        board_layout_info->is_number_of_slots_valid = 1;
+        board_layout_info->is_slots_size_valid = 1;
+        board_layout_info->is_connector_offsets_valid = 1;
+        board_layout_info->is_connector_lengths_valid = 1;
+
+        return BP_RESULT_OK;
+}
+
 /******************************************************************************/
 
 static const struct dc_vbios_funcs vbios_funcs = {
@@ -3836,6 +4030,8 @@ static const struct dc_vbios_funcs vbios_funcs = {
         .post_init = bios_parser_post_init,  /* patch vbios table for mxm module by reading i2c */
 
         .bios_parser_destroy = bios_parser_destroy,
+
+        .get_board_layout_info = bios_get_board_layout_info,
 };
 
 static bool bios_parser_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index b8cef7af3c4a..aeb56e402ccc 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -43,6 +43,29 @@
 #include "bios_parser_interface.h"
 
 #include "bios_parser_common.h"
+
+/* Temporarily add in defines until ObjectID.h patch is updated in a few days */
+#ifndef GENERIC_OBJECT_ID_BRACKET_LAYOUT
+#define GENERIC_OBJECT_ID_BRACKET_LAYOUT          0x05
+#endif /* GENERIC_OBJECT_ID_BRACKET_LAYOUT */
+
+#ifndef GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1
+#define GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1   \
+        (GRAPH_OBJECT_TYPE_GENERIC << OBJECT_TYPE_SHIFT |\
+        GRAPH_OBJECT_ENUM_ID1 << ENUM_ID_SHIFT |\
+        GENERIC_OBJECT_ID_BRACKET_LAYOUT << OBJECT_ID_SHIFT)
+#endif /* GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1 */
+
+#ifndef GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2
+#define GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2   \
+        (GRAPH_OBJECT_TYPE_GENERIC << OBJECT_TYPE_SHIFT |\
+        GRAPH_OBJECT_ENUM_ID2 << ENUM_ID_SHIFT |\
+        GENERIC_OBJECT_ID_BRACKET_LAYOUT << OBJECT_ID_SHIFT)
+#endif /* GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2 */
+
+#define DC_LOGGER \
+        bp->base.ctx->logger
+
 #define LAST_RECORD_TYPE 0xff
 #define SMU9_SYSPLL0_ID  0
 
@@ -86,7 +109,6 @@ static struct atom_encoder_caps_record *get_encoder_cap_record(
 
 #define DATA_TABLES(table) (bp->master_data_tbl->listOfdatatables.table)
 
-
 static void destruct(struct bios_parser *bp)
 {
         kfree(bp->base.bios_local_image);
@@ -1854,6 +1876,198 @@ static struct integrated_info *bios_parser_create_integrated_info(
         return NULL;
 }
 
+static enum bp_result update_slot_layout_info(
+        struct dc_bios *dcb,
+        unsigned int i,
+        struct slot_layout_info *slot_layout_info)
+{
+        unsigned int record_offset;
+        unsigned int j;
+        struct atom_display_object_path_v2 *object;
+        struct atom_bracket_layout_record *record;
+        struct atom_common_record_header *record_header;
+        enum bp_result result;
+        struct bios_parser *bp;
+        struct object_info_table *tbl;
+        struct display_object_info_table_v1_4 *v1_4;
+
+        record = NULL;
+        record_header = NULL;
+        result = BP_RESULT_NORECORD;
+
+        bp = BP_FROM_DCB(dcb);
+        tbl = &bp->object_info_tbl;
+        v1_4 = tbl->v1_4;
+
+        object = &v1_4->display_path[i];
+        record_offset = (unsigned int)
+                (object->disp_recordoffset) +
+                (unsigned int)(bp->object_info_tbl_offset);
+
+        for (;;) {
+
+                record_header = (struct atom_common_record_header *)
+                        GET_IMAGE(struct atom_common_record_header,
+                        record_offset);
+                if (record_header == NULL) {
+                        result = BP_RESULT_BADBIOSTABLE;
+                        break;
+                }
+
+                /* the end of the list */
+                if (record_header->record_type == 0xff ||
+                        record_header->record_size == 0)        {
+                        break;
+                }
+
+                if (record_header->record_type ==
+                        ATOM_BRACKET_LAYOUT_RECORD_TYPE &&
+                        sizeof(struct atom_bracket_layout_record)
+                        <= record_header->record_size) {
+                        record = (struct atom_bracket_layout_record *)
+                                (record_header);
+                        result = BP_RESULT_OK;
+                        break;
+                }
+
+                record_offset += record_header->record_size;
+        }
+
+        /* return if the record not found */
+        if (result != BP_RESULT_OK)
+                return result;
+
+        /* get slot sizes */
+        slot_layout_info->length = record->bracketlen;
+        slot_layout_info->width = record->bracketwidth;
+
+        /* get info for each connector in the slot */
+        slot_layout_info->num_of_connectors = record->conn_num;
+        for (j = 0; j < slot_layout_info->num_of_connectors; ++j) {
+                slot_layout_info->connectors[j].connector_type =
+                        (enum connector_layout_type)
+                        (record->conn_info[j].connector_type);
+                switch (record->conn_info[j].connector_type) {
+                case CONNECTOR_TYPE_DVI_D:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_DVI_D;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_DVI;
+                        break;
+
+                case CONNECTOR_TYPE_HDMI:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_HDMI;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_HDMI;
+                        break;
+
+                case CONNECTOR_TYPE_DISPLAY_PORT:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_DP;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_DP;
+                        break;
+
+                case CONNECTOR_TYPE_MINI_DISPLAY_PORT:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_MINI_DP;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_MINI_DP;
+                        break;
+
+                default:
+                        slot_layout_info->connectors[j].connector_type =
+                                CONNECTOR_LAYOUT_TYPE_UNKNOWN;
+                        slot_layout_info->connectors[j].length =
+                                CONNECTOR_SIZE_UNKNOWN;
+                }
+
+                slot_layout_info->connectors[j].position =
+                        record->conn_info[j].position;
+                slot_layout_info->connectors[j].connector_id =
+                        object_id_from_bios_object_id(
+                                record->conn_info[j].connectorobjid);
+        }
+        return result;
+}
+
+
+static enum bp_result get_bracket_layout_record(
+        struct dc_bios *dcb,
+        unsigned int bracket_layout_id,
+        struct slot_layout_info *slot_layout_info)
+{
+        unsigned int i;
+        struct bios_parser *bp = BP_FROM_DCB(dcb);
+        enum bp_result result;
+        struct object_info_table *tbl;
+        struct display_object_info_table_v1_4 *v1_4;
+
+        if (slot_layout_info == NULL) {
+                DC_LOG_DETECTION_EDID_PARSER("Invalid slot_layout_info\n");
+                return BP_RESULT_BADINPUT;
+        }
+        tbl = &bp->object_info_tbl;
+        v1_4 = tbl->v1_4;
+
+        result = BP_RESULT_NORECORD;
+        for (i = 0; i < v1_4->number_of_path; ++i)      {
+
+                if (bracket_layout_id ==
+                        v1_4->display_path[i].display_objid) {
+                        result = update_slot_layout_info(dcb, i,
+                                slot_layout_info);
+                        break;
+                }
+        }
+        return result;
+}
+
+static enum bp_result bios_get_board_layout_info(
+        struct dc_bios *dcb,
+        struct board_layout_info *board_layout_info)
+{
+        unsigned int i;
+        struct bios_parser *bp;
+        enum bp_result record_result;
+
+        const unsigned int slot_index_to_vbios_id[MAX_BOARD_SLOTS] = {
+                GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID1,
+                GENERICOBJECT_BRACKET_LAYOUT_ENUM_ID2,
+                0, 0
+        };
+
+        bp = BP_FROM_DCB(dcb);
+        if (board_layout_info == NULL) {
+                DC_LOG_DETECTION_EDID_PARSER("Invalid board_layout_info\n");
+                return BP_RESULT_BADINPUT;
+        }
+
+        board_layout_info->num_of_slots = 0;
+
+        for (i = 0; i < MAX_BOARD_SLOTS; ++i) {
+                record_result = get_bracket_layout_record(dcb,
+                        slot_index_to_vbios_id[i],
+                        &board_layout_info->slots[i]);
+
+                if (record_result == BP_RESULT_NORECORD && i > 0)
+                        break; /* no more slots present in bios */
+                else if (record_result != BP_RESULT_OK)
+                        return record_result;  /* fail */
+
+                ++board_layout_info->num_of_slots;
+        }
+
+        /* all data is valid */
+        board_layout_info->is_number_of_slots_valid = 1;
+        board_layout_info->is_slots_size_valid = 1;
+        board_layout_info->is_connector_offsets_valid = 1;
+        board_layout_info->is_connector_lengths_valid = 1;
+
+        return BP_RESULT_OK;
+}
+
 static const struct dc_vbios_funcs vbios_funcs = {
         .get_connectors_number = bios_parser_get_connectors_number,
 
@@ -1925,6 +2139,8 @@ static const struct dc_vbios_funcs vbios_funcs = {
         .bios_parser_destroy = firmware_parser_destroy,
 
         .get_smu_clock_info = bios_parser_get_smu_clock_info,
+
+        .get_board_layout_info = bios_get_board_layout_info,
 };
 
 static bool bios_parser_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
index d9b84ec7954c..90082bab71f0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
@@ -198,6 +198,10 @@ struct dc_vbios_funcs {
         void (*post_init)(struct dc_bios *bios);
 
         void (*bios_parser_destroy)(struct dc_bios **dcb);
+
+        enum bp_result (*get_board_layout_info)(
+                struct dc_bios *dcb,
+                struct board_layout_info *board_layout_info);
 };
 
 struct bios_registers {
diff --git a/drivers/gpu/drm/amd/display/include/grph_object_defs.h b/drivers/gpu/drm/amd/display/include/grph_object_defs.h
index 2941b882b0b6..58bb42ed85ca 100644
--- a/drivers/gpu/drm/amd/display/include/grph_object_defs.h
+++ b/drivers/gpu/drm/amd/display/include/grph_object_defs.h
@@ -37,6 +37,10 @@
  * ********************************************************************
  */
 
+#define MAX_CONNECTOR_NUMBER_PER_SLOT   (16)
+#define MAX_BOARD_SLOTS                                 (4)
+#define INVALID_CONNECTOR_INDEX                 ((unsigned int)(-1))
+
 /* HPD unit id - HW direct translation */
 enum hpd_source_id {
         HPD_SOURCEID1 = 0,
@@ -136,5 +140,47 @@ enum sync_source {
         SYNC_SOURCE_DUAL_GPU_PIN
 };
 
+/* connector sizes in millimeters - from BiosParserTypes.hpp */
+#define CONNECTOR_SIZE_DVI                      40
+#define CONNECTOR_SIZE_VGA                      32
+#define CONNECTOR_SIZE_HDMI                     16
+#define CONNECTOR_SIZE_DP                       16
+#define CONNECTOR_SIZE_MINI_DP                  9
+#define CONNECTOR_SIZE_UNKNOWN                  30
+
+enum connector_layout_type {
+        CONNECTOR_LAYOUT_TYPE_UNKNOWN,
+        CONNECTOR_LAYOUT_TYPE_DVI_D,
+        CONNECTOR_LAYOUT_TYPE_DVI_I,
+        CONNECTOR_LAYOUT_TYPE_VGA,
+        CONNECTOR_LAYOUT_TYPE_HDMI,
+        CONNECTOR_LAYOUT_TYPE_DP,
+        CONNECTOR_LAYOUT_TYPE_MINI_DP,
+};
+struct connector_layout_info {
+        struct graphics_object_id connector_id;
+        enum connector_layout_type connector_type;
+        unsigned int length;
+        unsigned int position;  /* offset in mm from right side of the board */
+};
+
+/* length and width in mm */
+struct slot_layout_info {
+        unsigned int length;
+        unsigned int width;
+        unsigned int num_of_connectors;
+        struct connector_layout_info connectors[MAX_CONNECTOR_NUMBER_PER_SLOT];
+};
+
+struct board_layout_info {
+        unsigned int num_of_slots;
 
+        /* indicates valid information in bracket layout structure. */
+        unsigned int is_number_of_slots_valid : 1;
+        unsigned int is_slots_size_valid : 1;
+        unsigned int is_connector_offsets_valid : 1;
+        unsigned int is_connector_lengths_valid : 1;
+
+        struct slot_layout_info slots[MAX_BOARD_SLOTS];
+};
 #endif
diff --git a/drivers/gpu/drm/amd/display/include/grph_object_id.h b/drivers/gpu/drm/amd/display/include/grph_object_id.h
index 92cc6c112ea6..33b3d755fe65 100644
--- a/drivers/gpu/drm/amd/display/include/grph_object_id.h
+++ b/drivers/gpu/drm/amd/display/include/grph_object_id.h
@@ -292,4 +292,15 @@ static inline enum engine_id dal_graphics_object_id_get_engine_id(
                 return (enum engine_id) id.id;
         return ENGINE_ID_UNKNOWN;
 }
+
+static inline bool dal_graphics_object_id_equal(
+        struct graphics_object_id id_1,
+        struct graphics_object_id id_2)
+{
+        if ((id_1.id == id_2.id) && (id_1.enum_id == id_2.enum_id) &&
+                (id_1.type == id_2.type)) {
+                return true;
+        }
+        return false;
+}
 #endif