14f8e37dbSMeenakshikumar Somasundaram /*
24f8e37dbSMeenakshikumar Somasundaram * Copyright 2019 Advanced Micro Devices, Inc.
34f8e37dbSMeenakshikumar Somasundaram *
44f8e37dbSMeenakshikumar Somasundaram * Permission is hereby granted, free of charge, to any person obtaining a
54f8e37dbSMeenakshikumar Somasundaram * copy of this software and associated documentation files (the "Software"),
64f8e37dbSMeenakshikumar Somasundaram * to deal in the Software without restriction, including without limitation
74f8e37dbSMeenakshikumar Somasundaram * the rights to use, copy, modify, merge, publish, distribute, sublicense,
84f8e37dbSMeenakshikumar Somasundaram * and/or sell copies of the Software, and to permit persons to whom the
94f8e37dbSMeenakshikumar Somasundaram * Software is furnished to do so, subject to the following conditions:
104f8e37dbSMeenakshikumar Somasundaram *
114f8e37dbSMeenakshikumar Somasundaram * The above copyright notice and this permission notice shall be included in
124f8e37dbSMeenakshikumar Somasundaram * all copies or substantial portions of the Software.
134f8e37dbSMeenakshikumar Somasundaram *
144f8e37dbSMeenakshikumar Somasundaram * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
154f8e37dbSMeenakshikumar Somasundaram * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
164f8e37dbSMeenakshikumar Somasundaram * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
174f8e37dbSMeenakshikumar Somasundaram * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
184f8e37dbSMeenakshikumar Somasundaram * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
194f8e37dbSMeenakshikumar Somasundaram * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
204f8e37dbSMeenakshikumar Somasundaram * OTHER DEALINGS IN THE SOFTWARE.
214f8e37dbSMeenakshikumar Somasundaram *
224f8e37dbSMeenakshikumar Somasundaram * Authors: AMD
234f8e37dbSMeenakshikumar Somasundaram *
244f8e37dbSMeenakshikumar Somasundaram */
254f8e37dbSMeenakshikumar Somasundaram
264f8e37dbSMeenakshikumar Somasundaram #include "dmub/dmub_srv_stat.h"
274f8e37dbSMeenakshikumar Somasundaram #include "dmub/inc/dmub_cmd.h"
284f8e37dbSMeenakshikumar Somasundaram
294f8e37dbSMeenakshikumar Somasundaram /**
304f8e37dbSMeenakshikumar Somasundaram * DOC: DMUB_SRV STAT Interface
314f8e37dbSMeenakshikumar Somasundaram *
324f8e37dbSMeenakshikumar Somasundaram * These interfaces are called without acquiring DAL and DC locks.
334f8e37dbSMeenakshikumar Somasundaram * Hence, there is limitations on whese interfaces can access. Only
344f8e37dbSMeenakshikumar Somasundaram * variables exclusively defined for these interfaces can be modified.
354f8e37dbSMeenakshikumar Somasundaram */
364f8e37dbSMeenakshikumar Somasundaram
374f8e37dbSMeenakshikumar Somasundaram /**
38397d0c46SLee Jones * dmub_srv_stat_get_notification - Retrieves a dmub outbox notification, set up dmub notification
394f8e37dbSMeenakshikumar Somasundaram * structure with message information. Also a pending bit if queue
404f8e37dbSMeenakshikumar Somasundaram * is having more notifications
41397d0c46SLee Jones * @dmub: dmub srv structure
42397d0c46SLee Jones * @notify: dmub notification structure to be filled up
434f8e37dbSMeenakshikumar Somasundaram *
44397d0c46SLee Jones * Returns: dmub_status
454f8e37dbSMeenakshikumar Somasundaram */
dmub_srv_stat_get_notification(struct dmub_srv * dmub,struct dmub_notification * notify)464f8e37dbSMeenakshikumar Somasundaram enum dmub_status dmub_srv_stat_get_notification(struct dmub_srv *dmub,
474f8e37dbSMeenakshikumar Somasundaram struct dmub_notification *notify)
484f8e37dbSMeenakshikumar Somasundaram {
494f8e37dbSMeenakshikumar Somasundaram /**
504f8e37dbSMeenakshikumar Somasundaram * This function is called without dal and dc locks, so
514f8e37dbSMeenakshikumar Somasundaram * we shall not modify any dmub variables, only dmub->outbox1_rb
524f8e37dbSMeenakshikumar Somasundaram * is exempted as it is exclusively accessed by this function
534f8e37dbSMeenakshikumar Somasundaram */
544f8e37dbSMeenakshikumar Somasundaram union dmub_rb_out_cmd cmd = {0};
554f8e37dbSMeenakshikumar Somasundaram
564f8e37dbSMeenakshikumar Somasundaram if (!dmub->hw_init) {
574f8e37dbSMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_NO_DATA;
584f8e37dbSMeenakshikumar Somasundaram notify->pending_notification = false;
594f8e37dbSMeenakshikumar Somasundaram return DMUB_STATUS_INVALID;
604f8e37dbSMeenakshikumar Somasundaram }
614f8e37dbSMeenakshikumar Somasundaram
624f8e37dbSMeenakshikumar Somasundaram /* Get write pointer which is updated by dmub */
634f8e37dbSMeenakshikumar Somasundaram dmub->outbox1_rb.wrpt = dmub->hw_funcs.get_outbox1_wptr(dmub);
644f8e37dbSMeenakshikumar Somasundaram
654f8e37dbSMeenakshikumar Somasundaram if (!dmub_rb_out_front(&dmub->outbox1_rb, &cmd)) {
664f8e37dbSMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_NO_DATA;
674f8e37dbSMeenakshikumar Somasundaram notify->pending_notification = false;
684f8e37dbSMeenakshikumar Somasundaram return DMUB_STATUS_OK;
694f8e37dbSMeenakshikumar Somasundaram }
704f8e37dbSMeenakshikumar Somasundaram
714f8e37dbSMeenakshikumar Somasundaram switch (cmd.cmd_common.header.type) {
724f8e37dbSMeenakshikumar Somasundaram case DMUB_OUT_CMD__DP_AUX_REPLY:
734f8e37dbSMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_AUX_REPLY;
744f8e37dbSMeenakshikumar Somasundaram notify->link_index = cmd.dp_aux_reply.control.instance;
754f8e37dbSMeenakshikumar Somasundaram notify->result = cmd.dp_aux_reply.control.result;
764f8e37dbSMeenakshikumar Somasundaram dmub_memcpy((void *)¬ify->aux_reply,
774f8e37dbSMeenakshikumar Somasundaram (void *)&cmd.dp_aux_reply.reply_data, sizeof(struct aux_reply_data));
784f8e37dbSMeenakshikumar Somasundaram break;
79892b74a6SMeenakshikumar Somasundaram case DMUB_OUT_CMD__DP_HPD_NOTIFY:
80892b74a6SMeenakshikumar Somasundaram if (cmd.dp_hpd_notify.hpd_data.hpd_type == DP_HPD) {
81892b74a6SMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_HPD;
82892b74a6SMeenakshikumar Somasundaram notify->hpd_status = cmd.dp_hpd_notify.hpd_data.hpd_status;
83892b74a6SMeenakshikumar Somasundaram } else {
84892b74a6SMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_HPD_IRQ;
85892b74a6SMeenakshikumar Somasundaram }
86892b74a6SMeenakshikumar Somasundaram
87892b74a6SMeenakshikumar Somasundaram notify->link_index = cmd.dp_hpd_notify.hpd_data.instance;
88892b74a6SMeenakshikumar Somasundaram notify->result = AUX_RET_SUCCESS;
89892b74a6SMeenakshikumar Somasundaram break;
9071af9d46SMeenakshikumar Somasundaram case DMUB_OUT_CMD__SET_CONFIG_REPLY:
9171af9d46SMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_SET_CONFIG_REPLY;
9271af9d46SMeenakshikumar Somasundaram notify->link_index = cmd.set_config_reply.set_config_reply_control.instance;
9371af9d46SMeenakshikumar Somasundaram notify->sc_status = cmd.set_config_reply.set_config_reply_control.status;
9471af9d46SMeenakshikumar Somasundaram break;
95669018a9SMustapha Ghaddar case DMUB_OUT_CMD__DPIA_NOTIFICATION:
96669018a9SMustapha Ghaddar notify->type = DMUB_NOTIFICATION_DPIA_NOTIFICATION;
97*8af54c61SMustapha Ghaddar notify->link_index = cmd.dpia_notification.payload.header.instance;
98669018a9SMustapha Ghaddar
99*8af54c61SMustapha Ghaddar if (cmd.dpia_notification.payload.header.type == DPIA_NOTIFY__BW_ALLOCATION) {
100669018a9SMustapha Ghaddar
101*8af54c61SMustapha Ghaddar notify->dpia_notification.payload.data.dpia_bw_alloc.estimated_bw =
102*8af54c61SMustapha Ghaddar cmd.dpia_notification.payload.data.dpia_bw_alloc.estimated_bw;
103*8af54c61SMustapha Ghaddar notify->dpia_notification.payload.data.dpia_bw_alloc.allocated_bw =
104*8af54c61SMustapha Ghaddar cmd.dpia_notification.payload.data.dpia_bw_alloc.allocated_bw;
105857aa2beSMustapha Ghaddar
106*8af54c61SMustapha Ghaddar if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_failed)
107857aa2beSMustapha Ghaddar notify->result = DPIA_BW_REQ_FAILED;
108*8af54c61SMustapha Ghaddar else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_request_succeeded)
109857aa2beSMustapha Ghaddar notify->result = DPIA_BW_REQ_SUCCESS;
110*8af54c61SMustapha Ghaddar else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.est_bw_changed)
111857aa2beSMustapha Ghaddar notify->result = DPIA_EST_BW_CHANGED;
112*8af54c61SMustapha Ghaddar else if (cmd.dpia_notification.payload.data.dpia_bw_alloc.bits.bw_alloc_cap_changed)
113669018a9SMustapha Ghaddar notify->result = DPIA_BW_ALLOC_CAPS_CHANGED;
114669018a9SMustapha Ghaddar }
115669018a9SMustapha Ghaddar break;
1164f8e37dbSMeenakshikumar Somasundaram default:
1174f8e37dbSMeenakshikumar Somasundaram notify->type = DMUB_NOTIFICATION_NO_DATA;
1184f8e37dbSMeenakshikumar Somasundaram break;
1194f8e37dbSMeenakshikumar Somasundaram }
1204f8e37dbSMeenakshikumar Somasundaram
1214f8e37dbSMeenakshikumar Somasundaram /* Pop outbox1 ringbuffer and update read pointer */
1224f8e37dbSMeenakshikumar Somasundaram dmub_rb_pop_front(&dmub->outbox1_rb);
1234f8e37dbSMeenakshikumar Somasundaram dmub->hw_funcs.set_outbox1_rptr(dmub, dmub->outbox1_rb.rptr);
1244f8e37dbSMeenakshikumar Somasundaram
1254f8e37dbSMeenakshikumar Somasundaram /**
1264f8e37dbSMeenakshikumar Somasundaram * Notify dc whether dmub has a pending outbox message,
1274f8e37dbSMeenakshikumar Somasundaram * this is to avoid one more call to dmub_srv_stat_get_notification
1284f8e37dbSMeenakshikumar Somasundaram */
1294f8e37dbSMeenakshikumar Somasundaram if (dmub_rb_empty(&dmub->outbox1_rb))
1304f8e37dbSMeenakshikumar Somasundaram notify->pending_notification = false;
1314f8e37dbSMeenakshikumar Somasundaram else
1324f8e37dbSMeenakshikumar Somasundaram notify->pending_notification = true;
1334f8e37dbSMeenakshikumar Somasundaram
1344f8e37dbSMeenakshikumar Somasundaram return DMUB_STATUS_OK;
1354f8e37dbSMeenakshikumar Somasundaram }
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