| /* |
| * Copyright 2019 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: AMD |
| * |
| */ |
| |
| #include "dmub/dmub_srv_stat.h" |
| #include "dmub/inc/dmub_cmd.h" |
| |
| /** |
| * DOC: DMUB_SRV STAT Interface |
| * |
| * These interfaces are called without acquiring DAL and DC locks. |
| * Hence, there is limitations on whese interfaces can access. Only |
| * variables exclusively defined for these interfaces can be modified. |
| */ |
| |
| /** |
| * dmub_srv_stat_get_notification - Retrieves a dmub outbox notification, set up dmub notification |
| * structure with message information. Also a pending bit if queue |
| * is having more notifications |
| * @dmub: dmub srv structure |
| * @notify: dmub notification structure to be filled up |
| * |
| * Returns: dmub_status |
| */ |
| enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub, |
| struct dmub_notification *notify) |
| { |
| /** |
| * This function is called without dal and dc locks, so |
| * we shall not modify any dmub variables, only dmub->outbox1_rb |
| * is exempted as it is exclusively accessed by this function |
| */ |
| union dmub_rb_out_cmd cmd = {0}; |
| |
| if (!dmub->hw_init) { |
| notify->type = DMUB_NOTIFICATION_NO_DATA; |
| notify->pending_notification = false; |
| return DMUB_STATUS_INVALID; |
| } |
| |
| /* Get write pointer which is updated by dmub */ |
| dmub->outbox1_rb.wrpt = dmub->hw_funcs.get_outbox1_wptr(dmub); |
| |
| if (!dmub_rb_out_front(&dmub->outbox1_rb, &cmd)) { |
| notify->type = DMUB_NOTIFICATION_NO_DATA; |
| notify->pending_notification = false; |
| return DMUB_STATUS_OK; |
| } |
| |
| switch (cmd.cmd_common.header.type) { |
| case DMUB_OUT_CMD__DP_AUX_REPLY: |
| notify->type = DMUB_NOTIFICATION_AUX_REPLY; |
| notify->link_index = cmd.dp_aux_reply.control.instance; |
| notify->result = cmd.dp_aux_reply.control.result; |
| dmub_memcpy((void *)¬ify->aux_reply, |
| (void *)&cmd.dp_aux_reply.reply_data, sizeof(struct aux_reply_data)); |
| break; |
| case DMUB_OUT_CMD__DP_HPD_NOTIFY: |
| if (cmd.dp_hpd_notify.hpd_data.hpd_type == DP_HPD) { |
| notify->type = DMUB_NOTIFICATION_HPD; |
| notify->hpd_status = cmd.dp_hpd_notify.hpd_data.hpd_status; |
| } else { |
| notify->type = DMUB_NOTIFICATION_HPD_IRQ; |
| } |
| |
| notify->link_index = cmd.dp_hpd_notify.hpd_data.instance; |
| notify->result = AUX_RET_SUCCESS; |
| break; |
| case DMUB_OUT_CMD__SET_CONFIG_REPLY: |
| notify->type = DMUB_NOTIFICATION_SET_CONFIG_REPLY; |
| 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_notification.payload.header.instance; |
| |
| if (cmd.dpia_notification.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) { |
| |
| notify->dpia_notification.payload.data.dpia_bw_alloc.estimated_bw = |
| cmd.dpia_notification.payload.data.dpia_bw_alloc.estimated_bw; |
| notify->dpia_notification.payload.data.dpia_bw_alloc.allocated_bw = |
| cmd.dpia_notification.payload.data.dpia_bw_alloc.allocated_bw; |
| |
| if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_failed) |
| notify->result = DPIA_BW_REQ_FAILED; |
| else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_succeeded) |
| notify->result = DPIA_BW_REQ_SUCCESS; |
| else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.est_bw_changed) |
| notify->result = DPIA_EST_BW_CHANGED; |
| else if (cmd.dpia_notification.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; |
| } |
| |
| /* Pop outbox1 ringbuffer and update read pointer */ |
| dmub_rb_pop_front(&dmub->outbox1_rb); |
| dmub->hw_funcs.set_outbox1_rptr(dmub, dmub->outbox1_rb.rptr); |
| |
| /** |
| * Notify dc whether dmub has a pending outbox message, |
| * this is to avoid one more call to dmub_srv_stat_get_notification |
| */ |
| if (dmub_rb_empty(&dmub->outbox1_rb)) |
| notify->pending_notification = false; |
| else |
| notify->pending_notification = true; |
| |
| return DMUB_STATUS_OK; |
| } |