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 
dc_dmub_srv_construct(struct dc_dmub_srv * dc_srv,struct dc * dc,struct dmub_srv * dmub)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 
dc_dmub_srv_create(struct dc * dc,struct dmub_srv * dmub)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 
dc_dmub_srv_destroy(struct dc_dmub_srv ** dmub_srv)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 
dc_dmub_srv_cmd_queue(struct dc_dmub_srv * dc_dmub_srv,union dmub_rb_cmd * cmd)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 
dc_dmub_srv_cmd_execute(struct dc_dmub_srv * dc_dmub_srv)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 
dc_dmub_srv_wait_idle(struct dc_dmub_srv * dc_dmub_srv)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 
dc_dmub_srv_clear_inbox0_ack(struct dc_dmub_srv * dmub_srv)118 void dc_dmub_srv_clear_inbox0_ack(struct dc_dmub_srv *dmub_srv)
119 {
120 	struct dmub_srv *dmub = dmub_srv->dmub;
121 	struct dc_context *dc_ctx = dmub_srv->ctx;
122 	enum dmub_status status = DMUB_STATUS_OK;
123 
124 	status = dmub_srv_clear_inbox0_ack(dmub);
125 	if (status != DMUB_STATUS_OK) {
126 		DC_ERROR("Error clearing INBOX0 ack: status=%d\n", status);
127 		dc_dmub_srv_log_diagnostic_data(dmub_srv);
128 	}
129 }
130 
dc_dmub_srv_wait_for_inbox0_ack(struct dc_dmub_srv * dmub_srv)131 void dc_dmub_srv_wait_for_inbox0_ack(struct dc_dmub_srv *dmub_srv)
132 {
133 	struct dmub_srv *dmub = dmub_srv->dmub;
134 	struct dc_context *dc_ctx = dmub_srv->ctx;
135 	enum dmub_status status = DMUB_STATUS_OK;
136 
137 	status = dmub_srv_wait_for_inbox0_ack(dmub, 100000);
138 	if (status != DMUB_STATUS_OK) {
139 		DC_ERROR("Error waiting for INBOX0 HW Lock Ack\n");
140 		dc_dmub_srv_log_diagnostic_data(dmub_srv);
141 	}
142 }
143 
dc_dmub_srv_send_inbox0_cmd(struct dc_dmub_srv * dmub_srv,union dmub_inbox0_data_register data)144 void dc_dmub_srv_send_inbox0_cmd(struct dc_dmub_srv *dmub_srv,
145 		union dmub_inbox0_data_register data)
146 {
147 	struct dmub_srv *dmub = dmub_srv->dmub;
148 	struct dc_context *dc_ctx = dmub_srv->ctx;
149 	enum dmub_status status = DMUB_STATUS_OK;
150 
151 	status = dmub_srv_send_inbox0_cmd(dmub, data);
152 	if (status != DMUB_STATUS_OK) {
153 		DC_ERROR("Error sending INBOX0 cmd\n");
154 		dc_dmub_srv_log_diagnostic_data(dmub_srv);
155 	}
156 }
157 
dc_dmub_srv_cmd_with_reply_data(struct dc_dmub_srv * dc_dmub_srv,union dmub_rb_cmd * cmd)158 bool dc_dmub_srv_cmd_with_reply_data(struct dc_dmub_srv *dc_dmub_srv, union dmub_rb_cmd *cmd)
159 {
160 	struct dmub_srv *dmub;
161 	enum dmub_status status;
162 
163 	if (!dc_dmub_srv || !dc_dmub_srv->dmub)
164 		return false;
165 
166 	dmub = dc_dmub_srv->dmub;
167 
168 	status = dmub_srv_cmd_with_reply_data(dmub, cmd);
169 	if (status != DMUB_STATUS_OK) {
170 		DC_LOG_DEBUG("No reply for DMUB command: status=%d\n", status);
171 		return false;
172 	}
173 
174 	return true;
175 }
176 
dc_dmub_srv_wait_phy_init(struct dc_dmub_srv * dc_dmub_srv)177 void dc_dmub_srv_wait_phy_init(struct dc_dmub_srv *dc_dmub_srv)
178 {
179 	struct dmub_srv *dmub = dc_dmub_srv->dmub;
180 	struct dc_context *dc_ctx = dc_dmub_srv->ctx;
181 	enum dmub_status status;
182 
183 	for (;;) {
184 		/* Wait up to a second for PHY init. */
185 		status = dmub_srv_wait_for_phy_init(dmub, 1000000);
186 		if (status == DMUB_STATUS_OK)
187 			/* Initialization OK */
188 			break;
189 
190 		DC_ERROR("DMCUB PHY init failed: status=%d\n", status);
191 		ASSERT(0);
192 
193 		if (status != DMUB_STATUS_TIMEOUT)
194 			/*
195 			 * Server likely initialized or we don't have
196 			 * DMCUB HW support - this won't end.
197 			 */
198 			break;
199 
200 		/* Continue spinning so we don't hang the ASIC. */
201 	}
202 }
203 
dc_dmub_srv_notify_stream_mask(struct dc_dmub_srv * dc_dmub_srv,unsigned int stream_mask)204 bool dc_dmub_srv_notify_stream_mask(struct dc_dmub_srv *dc_dmub_srv,
205 				    unsigned int stream_mask)
206 {
207 	struct dmub_srv *dmub;
208 	const uint32_t timeout = 30;
209 
210 	if (!dc_dmub_srv || !dc_dmub_srv->dmub)
211 		return false;
212 
213 	dmub = dc_dmub_srv->dmub;
214 
215 	return dmub_srv_send_gpint_command(
216 		       dmub, DMUB_GPINT__IDLE_OPT_NOTIFY_STREAM_MASK,
217 		       stream_mask, timeout) == DMUB_STATUS_OK;
218 }
219 
dc_dmub_srv_is_restore_required(struct dc_dmub_srv * dc_dmub_srv)220 bool dc_dmub_srv_is_restore_required(struct dc_dmub_srv *dc_dmub_srv)
221 {
222 	struct dmub_srv *dmub;
223 	struct dc_context *dc_ctx;
224 	union dmub_fw_boot_status boot_status;
225 	enum dmub_status status;
226 
227 	if (!dc_dmub_srv || !dc_dmub_srv->dmub)
228 		return false;
229 
230 	dmub = dc_dmub_srv->dmub;
231 	dc_ctx = dc_dmub_srv->ctx;
232 
233 	status = dmub_srv_get_fw_boot_status(dmub, &boot_status);
234 	if (status != DMUB_STATUS_OK) {
235 		DC_ERROR("Error querying DMUB boot status: error=%d\n", status);
236 		return false;
237 	}
238 
239 	return boot_status.bits.restore_required;
240 }
241 
dc_dmub_srv_get_dmub_outbox0_msg(const struct dc * dc,struct dmcub_trace_buf_entry * entry)242 bool dc_dmub_srv_get_dmub_outbox0_msg(const struct dc *dc, struct dmcub_trace_buf_entry *entry)
243 {
244 	struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
245 	return dmub_srv_get_outbox0_msg(dmub, entry);
246 }
247 
dc_dmub_trace_event_control(struct dc * dc,bool enable)248 void dc_dmub_trace_event_control(struct dc *dc, bool enable)
249 {
250 	dm_helpers_dmub_outbox_interrupt_control(dc->ctx, enable);
251 }
252 
dc_dmub_srv_get_diagnostic_data(struct dc_dmub_srv * dc_dmub_srv,struct dmub_diagnostic_data * diag_data)253 bool dc_dmub_srv_get_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv, struct dmub_diagnostic_data *diag_data)
254 {
255 	if (!dc_dmub_srv || !dc_dmub_srv->dmub || !diag_data)
256 		return false;
257 	return dmub_srv_get_diagnostic_data(dc_dmub_srv->dmub, diag_data);
258 }
259 
dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv * dc_dmub_srv)260 void dc_dmub_srv_log_diagnostic_data(struct dc_dmub_srv *dc_dmub_srv)
261 {
262 	struct dmub_diagnostic_data diag_data = {0};
263 
264 	if (!dc_dmub_srv || !dc_dmub_srv->dmub) {
265 		DC_LOG_ERROR("%s: invalid parameters.", __func__);
266 		return;
267 	}
268 
269 	if (!dc_dmub_srv_get_diagnostic_data(dc_dmub_srv, &diag_data)) {
270 		DC_LOG_ERROR("%s: dc_dmub_srv_get_diagnostic_data failed.", __func__);
271 		return;
272 	}
273 
274 	DC_LOG_DEBUG(
275 		"DMCUB STATE\n"
276 		"    dmcub_version      : %08x\n"
277 		"    scratch  [0]       : %08x\n"
278 		"    scratch  [1]       : %08x\n"
279 		"    scratch  [2]       : %08x\n"
280 		"    scratch  [3]       : %08x\n"
281 		"    scratch  [4]       : %08x\n"
282 		"    scratch  [5]       : %08x\n"
283 		"    scratch  [6]       : %08x\n"
284 		"    scratch  [7]       : %08x\n"
285 		"    scratch  [8]       : %08x\n"
286 		"    scratch  [9]       : %08x\n"
287 		"    scratch [10]       : %08x\n"
288 		"    scratch [11]       : %08x\n"
289 		"    scratch [12]       : %08x\n"
290 		"    scratch [13]       : %08x\n"
291 		"    scratch [14]       : %08x\n"
292 		"    scratch [15]       : %08x\n"
293 		"    pc                 : %08x\n"
294 		"    unk_fault_addr     : %08x\n"
295 		"    inst_fault_addr    : %08x\n"
296 		"    data_fault_addr    : %08x\n"
297 		"    inbox1_rptr        : %08x\n"
298 		"    inbox1_wptr        : %08x\n"
299 		"    inbox1_size        : %08x\n"
300 		"    inbox0_rptr        : %08x\n"
301 		"    inbox0_wptr        : %08x\n"
302 		"    inbox0_size        : %08x\n"
303 		"    is_enabled         : %d\n"
304 		"    is_soft_reset      : %d\n"
305 		"    is_secure_reset    : %d\n"
306 		"    is_traceport_en    : %d\n"
307 		"    is_cw0_en          : %d\n"
308 		"    is_cw6_en          : %d\n",
309 		diag_data.dmcub_version,
310 		diag_data.scratch[0],
311 		diag_data.scratch[1],
312 		diag_data.scratch[2],
313 		diag_data.scratch[3],
314 		diag_data.scratch[4],
315 		diag_data.scratch[5],
316 		diag_data.scratch[6],
317 		diag_data.scratch[7],
318 		diag_data.scratch[8],
319 		diag_data.scratch[9],
320 		diag_data.scratch[10],
321 		diag_data.scratch[11],
322 		diag_data.scratch[12],
323 		diag_data.scratch[13],
324 		diag_data.scratch[14],
325 		diag_data.scratch[15],
326 		diag_data.pc,
327 		diag_data.undefined_address_fault_addr,
328 		diag_data.inst_fetch_fault_addr,
329 		diag_data.data_write_fault_addr,
330 		diag_data.inbox1_rptr,
331 		diag_data.inbox1_wptr,
332 		diag_data.inbox1_size,
333 		diag_data.inbox0_rptr,
334 		diag_data.inbox0_wptr,
335 		diag_data.inbox0_size,
336 		diag_data.is_dmcub_enabled,
337 		diag_data.is_dmcub_soft_reset,
338 		diag_data.is_dmcub_secure_reset,
339 		diag_data.is_traceport_en,
340 		diag_data.is_cw0_enabled,
341 		diag_data.is_cw6_enabled);
342 }
343