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[linux.git] / drivers / gpu / drm / amd / display / dc / dc_dmub_srv.c
1 /*
2  * Copyright 2019 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25
26 #include "dc.h"
27 #include "dc_dmub_srv.h"
28 #include "../dmub/dmub_srv.h"
29 #include "dm_helpers.h"
30
31 #define CTX dc_dmub_srv->ctx
32 #define DC_LOGGER CTX->logger
33
34 static void dc_dmub_srv_construct(struct dc_dmub_srv *dc_srv, struct dc *dc,
35                                   struct dmub_srv *dmub)
36 {
37         dc_srv->dmub = dmub;
38         dc_srv->ctx = dc->ctx;
39 }
40
41 struct dc_dmub_srv *dc_dmub_srv_create(struct dc *dc, struct dmub_srv *dmub)
42 {
43         struct dc_dmub_srv *dc_srv =
44                 kzalloc(sizeof(struct dc_dmub_srv), GFP_KERNEL);
45
46         if (dc_srv == NULL) {
47                 BREAK_TO_DEBUGGER();
48                 return NULL;
49         }
50
51         dc_dmub_srv_construct(dc_srv, dc, dmub);
52
53         return dc_srv;
54 }
55
56 void dc_dmub_srv_destroy(struct dc_dmub_srv **dmub_srv)
57 {
58         if (*dmub_srv) {
59                 kfree(*dmub_srv);
60                 *dmub_srv = NULL;
61         }
62 }
63
64 void dc_dmub_srv_cmd_queue(struct dc_dmub_srv *dc_dmub_srv,
65                            union dmub_rb_cmd *cmd)
66 {
67         struct dmub_srv *dmub = dc_dmub_srv->dmub;
68         struct dc_context *dc_ctx = dc_dmub_srv->ctx;
69         enum dmub_status status;
70
71         status = dmub_srv_cmd_queue(dmub, cmd);
72         if (status == DMUB_STATUS_OK)
73                 return;
74
75         if (status != DMUB_STATUS_QUEUE_FULL)
76                 goto error;
77
78         /* Execute and wait for queue to become empty again. */
79         dc_dmub_srv_cmd_execute(dc_dmub_srv);
80         dc_dmub_srv_wait_idle(dc_dmub_srv);
81
82         /* Requeue the command. */
83         status = dmub_srv_cmd_queue(dmub, cmd);
84         if (status == DMUB_STATUS_OK)
85                 return;
86
87 error:
88         DC_ERROR("Error queuing DMUB command: status=%d\n", status);
89         dc_dmub_srv_log_diagnostic_data(dc_dmub_srv);
90 }
91
92 void dc_dmub_srv_cmd_execute(struct dc_dmub_srv *dc_dmub_srv)
93 {
94         struct dmub_srv *dmub = dc_dmub_srv->dmub;
95         struct dc_context *dc_ctx = dc_dmub_srv->ctx;
96         enum dmub_status status;
97
98         status = dmub_srv_cmd_execute(dmub);
99         if (status != DMUB_STATUS_OK) {
100                 DC_ERROR("Error starting DMUB execution: status=%d\n", status);
101                 dc_dmub_srv_log_diagnostic_data(dc_dmub_srv);
102         }
103 }
104
105 void dc_dmub_srv_wait_idle(struct dc_dmub_srv *dc_dmub_srv)
106 {
107         struct dmub_srv *dmub = dc_dmub_srv->dmub;
108         struct dc_context *dc_ctx = dc_dmub_srv->ctx;
109         enum dmub_status status;
110
111         status = dmub_srv_wait_for_idle(dmub, 100000);
112         if (status != DMUB_STATUS_OK) {
113                 DC_ERROR("Error waiting for DMUB idle: status=%d\n", status);
114                 dc_dmub_srv_log_diagnostic_data(dc_dmub_srv);
115         }
116 }
117
118 void dc_dmub_srv_send_inbox0_cmd(struct dc_dmub_srv *dmub_srv,
119                 union dmub_inbox0_data_register data)
120 {
121         struct dmub_srv *dmub = dmub_srv->dmub;
122         if (dmub->hw_funcs.send_inbox0_cmd)
123                 dmub->hw_funcs.send_inbox0_cmd(dmub, data);
124         // TODO: Add wait command -- poll register for ACK
125 }
126
127 bool dc_dmub_srv_cmd_with_reply_data(struct dc_dmub_srv *dc_dmub_srv, union dmub_rb_cmd *cmd)
128 {
129         struct dmub_srv *dmub;
130         enum dmub_status status;
131
132         if (!dc_dmub_srv || !dc_dmub_srv->dmub)
133                 return false;
134
135         dmub = dc_dmub_srv->dmub;
136
137         status = dmub_srv_cmd_with_reply_data(dmub, cmd);
138         if (status != DMUB_STATUS_OK) {
139                 DC_LOG_DEBUG("No reply for DMUB command: status=%d\n", status);
140                 return false;
141         }
142
143         return true;
144 }
145
146 void dc_dmub_srv_wait_phy_init(struct dc_dmub_srv *dc_dmub_srv)
147 {
148         struct dmub_srv *dmub = dc_dmub_srv->dmub;
149         struct dc_context *dc_ctx = dc_dmub_srv->ctx;
150         enum dmub_status status;
151
152         for (;;) {
153                 /* Wait up to a second for PHY init. */
154                 status = dmub_srv_wait_for_phy_init(dmub, 1000000);
155                 if (status == DMUB_STATUS_OK)
156                         /* Initialization OK */
157                         break;
158
159                 DC_ERROR("DMCUB PHY init failed: status=%d\n", status);
160                 ASSERT(0);
161
162                 if (status != DMUB_STATUS_TIMEOUT)
163                         /*
164                          * Server likely initialized or we don't have
165                          * DMCUB HW support - this won't end.
166                          */
167                         break;
168
169                 /* Continue spinning so we don't hang the ASIC. */
170         }
171 }
172
173 bool dc_dmub_srv_notify_stream_mask(struct dc_dmub_srv *dc_dmub_srv,
174                                     unsigned int stream_mask)
175 {
176         struct dmub_srv *dmub;
177         const uint32_t timeout = 30;
178
179         if (!dc_dmub_srv || !dc_dmub_srv->dmub)
180                 return false;
181
182         dmub = dc_dmub_srv->dmub;
183
184         return dmub_srv_send_gpint_command(
185                        dmub, DMUB_GPINT__IDLE_OPT_NOTIFY_STREAM_MASK,
186                        stream_mask, timeout) == DMUB_STATUS_OK;
187 }
188
189 bool dc_dmub_srv_is_restore_required(struct dc_dmub_srv *dc_dmub_srv)
190 {
191         struct dmub_srv *dmub;
192         struct dc_context *dc_ctx;
193         union dmub_fw_boot_status boot_status;
194         enum dmub_status status;
195
196         if (!dc_dmub_srv || !dc_dmub_srv->dmub)
197                 return false;
198
199         dmub = dc_dmub_srv->dmub;
200         dc_ctx = dc_dmub_srv->ctx;
201
202         status = dmub_srv_get_fw_boot_status(dmub, &boot_status);
203         if (status != DMUB_STATUS_OK) {
204                 DC_ERROR("Error querying DMUB boot status: error=%d\n", status);
205                 return false;
206         }
207
208         return boot_status.bits.restore_required;
209 }
210
211 bool dc_dmub_srv_get_dmub_outbox0_msg(const struct dc *dc, struct dmcub_trace_buf_entry *entry)
212 {
213         struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
214         return dmub_srv_get_outbox0_msg(dmub, entry);
215 }
216
217 void dc_dmub_trace_event_control(struct dc *dc, bool enable)
218 {
219         dm_helpers_dmub_outbox_interrupt_control(dc->ctx, enable);
220 }
221
222 bool dc_dmub_srv_get_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv, struct dmub_diagnostic_data *diag_data)
223 {
224         if (!dc_dmub_srv || !dc_dmub_srv->dmub || !diag_data)
225                 return false;
226         return dmub_srv_get_diagnostic_data(dc_dmub_srv->dmub, diag_data);
227 }
228
229 void dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv)
230 {
231         struct dmub_diagnostic_data diag_data = {0};
232
233         if (!dc_dmub_srv || !dc_dmub_srv->dmub) {
234                 DC_LOG_ERROR("%s: invalid parameters.", __func__);
235                 return;
236         }
237
238         if (!dc_dmub_srv_get_diagnostic_data(dc_dmub_srv, &diag_data)) {
239                 DC_LOG_ERROR("%s: dc_dmub_srv_get_diagnostic_data failed.", __func__);
240                 return;
241         }
242
243         DC_LOG_DEBUG(
244                 "DMCUB STATE\n"
245                 "    dmcub_version      : %08x\n"
246                 "    scratch  [0]       : %08x\n"
247                 "    scratch  [1]       : %08x\n"
248                 "    scratch  [2]       : %08x\n"
249                 "    scratch  [3]       : %08x\n"
250                 "    scratch  [4]       : %08x\n"
251                 "    scratch  [5]       : %08x\n"
252                 "    scratch  [6]       : %08x\n"
253                 "    scratch  [7]       : %08x\n"
254                 "    scratch  [8]       : %08x\n"
255                 "    scratch  [9]       : %08x\n"
256                 "    scratch [10]       : %08x\n"
257                 "    scratch [11]       : %08x\n"
258                 "    scratch [12]       : %08x\n"
259                 "    scratch [13]       : %08x\n"
260                 "    scratch [14]       : %08x\n"
261                 "    scratch [15]       : %08x\n"
262                 "    pc                 : %08x\n"
263                 "    unk_fault_addr     : %08x\n"
264                 "    inst_fault_addr    : %08x\n"
265                 "    data_fault_addr    : %08x\n"
266                 "    inbox1_rptr        : %08x\n"
267                 "    inbox1_wptr        : %08x\n"
268                 "    inbox1_size        : %08x\n"
269                 "    inbox0_rptr        : %08x\n"
270                 "    inbox0_wptr        : %08x\n"
271                 "    inbox0_size        : %08x\n"
272                 "    is_enabled         : %d\n"
273                 "    is_soft_reset      : %d\n"
274                 "    is_secure_reset    : %d\n"
275                 "    is_traceport_en    : %d\n"
276                 "    is_cw0_en          : %d\n"
277                 "    is_cw6_en          : %d\n",
278                 diag_data.dmcub_version,
279                 diag_data.scratch[0],
280                 diag_data.scratch[1],
281                 diag_data.scratch[2],
282                 diag_data.scratch[3],
283                 diag_data.scratch[4],
284                 diag_data.scratch[5],
285                 diag_data.scratch[6],
286                 diag_data.scratch[7],
287                 diag_data.scratch[8],
288                 diag_data.scratch[9],
289                 diag_data.scratch[10],
290                 diag_data.scratch[11],
291                 diag_data.scratch[12],
292                 diag_data.scratch[13],
293                 diag_data.scratch[14],
294                 diag_data.scratch[15],
295                 diag_data.pc,
296                 diag_data.undefined_address_fault_addr,
297                 diag_data.inst_fetch_fault_addr,
298                 diag_data.data_write_fault_addr,
299                 diag_data.inbox1_rptr,
300                 diag_data.inbox1_wptr,
301                 diag_data.inbox1_size,
302                 diag_data.inbox0_rptr,
303                 diag_data.inbox0_wptr,
304                 diag_data.inbox0_size,
305                 diag_data.is_dmcub_enabled,
306                 diag_data.is_dmcub_soft_reset,
307                 diag_data.is_dmcub_secure_reset,
308                 diag_data.is_traceport_en,
309                 diag_data.is_cw0_enabled,
310                 diag_data.is_cw6_enabled);
311 }
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