diff options
author | Mustapha Ghaddar <mghaddar@amd.com> | 2022-12-01 13:00:10 -0500 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2022-12-15 12:18:18 -0500 |
commit | 669018a9929c61cb14ea374ee93df24242a7794d (patch) | |
tree | e0d3d0dd346a379bc489459fb3562531777745aa /drivers/gpu/drm/amd/display/dmub | |
parent | 3f6752b4de41896c7f1609b1585db2080e8150d8 (diff) | |
download | linux-stable-669018a9929c61cb14ea374ee93df24242a7794d.tar.gz linux-stable-669018a9929c61cb14ea374ee93df24242a7794d.tar.bz2 linux-stable-669018a9929c61cb14ea374ee93df24242a7794d.zip |
drm/amd/display: Add DPIA NOTIFICATION logic
[WHY]
Adding the new DPIA NOTIFY packets from DMUB
As per the design with Cruise to account for
250ms response delay otherwise
[HOW]
Added th DPIA NOTIFY logic as per DMUB logic
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Signed-off-by: Mustapha Ghaddar <mghaddar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub')
-rw-r--r-- | drivers/gpu/drm/amd/display/dmub/dmub_srv.h | 3 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 83 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c | 21 |
3 files changed, 107 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h index eb5b7eb292ef..c8274967de94 100644 --- a/drivers/gpu/drm/amd/display/dmub/dmub_srv.h +++ b/drivers/gpu/drm/amd/display/dmub/dmub_srv.h @@ -126,6 +126,7 @@ enum dmub_notification_type { DMUB_NOTIFICATION_HPD, DMUB_NOTIFICATION_HPD_IRQ, DMUB_NOTIFICATION_SET_CONFIG_REPLY, + DMUB_NOTIFICATION_DPIA_NOTIFICATION, DMUB_NOTIFICATION_MAX }; @@ -453,6 +454,7 @@ struct dmub_srv { * @pending_notification: Indicates there are other pending notifications * @aux_reply: aux reply * @hpd_status: hpd status + * @bw_alloc_reply: BW Allocation reply from CM/DPIA */ struct dmub_notification { enum dmub_notification_type type; @@ -463,6 +465,7 @@ struct dmub_notification { struct aux_reply_data aux_reply; enum dp_hpd_status hpd_status; enum set_config_status sc_status; + struct dpia_notification_reply_data bw_alloc_reply; }; }; 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 33907feefebb..4dcd82d19ccf 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -770,6 +770,7 @@ enum dmub_out_cmd_type { * Command type used for SET_CONFIG Reply notification */ DMUB_OUT_CMD__SET_CONFIG_REPLY = 3, + DMUB_OUT_CMD__DPIA_NOTIFICATION = 5 }; /* DMUB_CMD__DPIA command sub-types. */ @@ -1517,6 +1518,84 @@ struct dp_hpd_data { }; /** + * DPIA NOTIFICATION Response Type + */ +enum dpia_notify_bw_alloc_status { + + DPIA_BW_REQ_FAILED = 0, + DPIA_BW_REQ_SUCCESS, + DPIA_EST_BW_CHANGED, + DPIA_BW_ALLOC_CAPS_CHANGED +}; + +/* DMUB_OUT_CMD__DPIA_NOTIFY Reply command - OutBox Cmd */ +/** + * Data passed to driver from FW in a DMUB_OUT_CMD__DPIA_NOTIFY command. + */ +struct dpia_notification_reply_data { + uint8_t allocated_bw; + uint8_t estimated_bw; +}; + +struct dpia_notification_common { + bool shared; +}; + +struct dpia_bw_allocation_notify_data { + union { + struct { + uint16_t cm_bw_alloc_support: 1; /**< USB4 CM BW Allocation mode support */ + uint16_t bw_request_failed: 1; /**< BW_Request_Failed */ + uint16_t bw_request_succeeded: 1; /**< BW_Request_Succeeded */ + uint16_t est_bw_changed: 1; /**< Estimated_BW changed */ + uint16_t bw_alloc_cap_changed: 1; /**< BW_Allocation_Capabiity_Changed */ + uint16_t reserved: 11; + } bits; + uint16_t flags; + }; + uint8_t cm_id; /**< CM ID */ + uint8_t group_id; /**< Group ID */ + uint8_t granularity; /**< BW Allocation Granularity */ + uint8_t estimated_bw; /**< Estimated_BW */ + uint8_t allocated_bw; /**< Allocated_BW */ + uint8_t reserved; +}; + +union dpia_notification_data { + struct dpia_notification_common common_data; + struct dpia_bw_allocation_notify_data dpia_bw_alloc; /**< Used for DPIA BW Allocation mode notification */ +}; + +enum dmub_cmd_dpia_notification_type { + DPIA_NOTIFY__BW_ALLOCATION = 0, +}; + +struct dpia_notification_header { + uint8_t instance; /**< DPIA Instance */ + uint8_t reserved[3]; + enum dmub_cmd_dpia_notification_type type; /**< DPIA notification type */ +}; + +struct dpia_notification_payload { + struct dpia_notification_header header; + union dpia_notification_data data; /**< DPIA notification data */ +}; + +/** + * Definition of a DMUB_OUT_CMD__DPIA_NOTIFY command. + */ +struct dmub_rb_cmd_dpia_notification { + /** + * Command header. + */ + struct dmub_cmd_header header; /**< DPIA notification header */ + /** + * Data passed to driver from FW in a DMUB_OUT_CMD__DPIA_NOTIFY command. + */ + struct dpia_notification_payload payload; /**< DPIA notification payload */ +}; + +/** * Definition of a DMUB_OUT_CMD__DP_HPD_NOTIFY command. */ struct dmub_rb_cmd_dp_hpd_notify { @@ -3422,6 +3501,10 @@ union dmub_rb_out_cmd { * SET_CONFIG reply command. */ struct dmub_rb_cmd_dp_set_config_reply set_config_reply; + /** + * BW ALLOCATION notification command. + */ + struct dmub_rb_cmd_dpia_notification dpia_notify; }; #pragma pack(pop) diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c index 44502ec919a2..55a534ec0794 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv_stat.c @@ -92,6 +92,27 @@ enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub, notify->link_index = cmd.set_config_reply.set_config_reply_control.instance; notify->sc_status = cmd.set_config_reply.set_config_reply_control.status; break; + case DMUB_OUT_CMD__DPIA_NOTIFICATION: + notify->type = DMUB_NOTIFICATION_DPIA_NOTIFICATION; + notify->link_index = cmd.dpia_notify.payload.header.instance; + + if (cmd.dpia_notify.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) { + + if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_failed) { + notify->result = DPIA_BW_REQ_FAILED; + } else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_request_succeeded) { + notify->result = DPIA_BW_REQ_SUCCESS; + notify->bw_alloc_reply.allocated_bw = + cmd.dpia_notify.payload.data.dpia_bw_alloc.allocated_bw; + } else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.est_bw_changed) { + notify->result = DPIA_EST_BW_CHANGED; + notify->bw_alloc_reply.estimated_bw = + cmd.dpia_notify.payload.data.dpia_bw_alloc.estimated_bw; + } else if (cmd.dpia_notify.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed) { + notify->result = DPIA_BW_ALLOC_CAPS_CHANGED; + } + } + break; default: notify->type = DMUB_NOTIFICATION_NO_DATA; break; |