1/*
2 * Copyright 2020 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
27#include "dc_bios_types.h"
28#include "dcn30_vpg.h"
29#include "reg_helper.h"
30
31#define DC_LOGGER \
32 vpg3->base.ctx->logger
33
34#define REG(reg)\
35 (vpg3->regs->reg)
36
37#undef FN
38#define FN(reg_name, field_name) \
39 vpg3->vpg_shift->field_name, vpg3->vpg_mask->field_name
40
41
42#define CTX \
43 vpg3->base.ctx
44
45
46void vpg3_update_generic_info_packet(
47 struct vpg *vpg,
48 uint32_t packet_index,
49 const struct dc_info_packet *info_packet,
50 bool immediate_update)
51{
52 struct dcn30_vpg *vpg3 = DCN30_VPG_FROM_VPG(vpg);
53 uint32_t i;
54
55 /* TODOFPGA Figure out a proper number for max_retries polling for lock
56 * use 50 for now.
57 */
58 uint32_t max_retries = 50;
59
60 if (packet_index > 14)
61 ASSERT(0);
62
63 /* poll dig_update_lock is not locked -> asic internal signal
64 * assume otg master lock will unlock it
65 */
66 /* REG_WAIT(AFMT_VBI_PACKET_CONTROL, AFMT_GENERIC_LOCK_STATUS,
67 * 0, 10, max_retries);
68 */
69
70 /* TODO: Check if this is required */
71 /* check if HW reading GSP memory */
72 REG_WAIT(VPG_GENERIC_STATUS, VPG_GENERIC_CONFLICT_OCCURED,
73 0, 10, max_retries);
74
75 /* HW does is not reading GSP memory not reading too long ->
76 * something wrong. clear GPS memory access and notify?
77 * hw SW is writing to GSP memory
78 */
79 REG_UPDATE(VPG_GENERIC_STATUS, VPG_GENERIC_CONFLICT_CLR, 1);
80
81 /* choose which generic packet to use */
82 REG_UPDATE(VPG_GENERIC_PACKET_ACCESS_CTRL,
83 VPG_GENERIC_DATA_INDEX, packet_index*9);
84
85 /* write generic packet header
86 * (4th byte is for GENERIC0 only)
87 */
88 REG_SET_4(VPG_GENERIC_PACKET_DATA, 0,
89 VPG_GENERIC_DATA_BYTE0, info_packet->hb0,
90 VPG_GENERIC_DATA_BYTE1, info_packet->hb1,
91 VPG_GENERIC_DATA_BYTE2, info_packet->hb2,
92 VPG_GENERIC_DATA_BYTE3, info_packet->hb3);
93
94 /* write generic packet contents
95 * (we never use last 4 bytes)
96 * there are 8 (0-7) mmDIG0_AFMT_GENERIC0_x registers
97 */
98 {
99 const uint32_t *content =
100 (const uint32_t *) &info_packet->sb[0];
101
102 for (i = 0; i < 8; i++) {
103 REG_WRITE(VPG_GENERIC_PACKET_DATA, *content++);
104 }
105 }
106
107 /* atomically update double-buffered GENERIC0 registers in immediate mode
108 * (update at next block_update when block_update_lock == 0).
109 */
110 if (immediate_update) {
111 switch (packet_index) {
112 case 0:
113 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
114 VPG_GENERIC0_IMMEDIATE_UPDATE, 1);
115 break;
116 case 1:
117 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
118 VPG_GENERIC1_IMMEDIATE_UPDATE, 1);
119 break;
120 case 2:
121 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
122 VPG_GENERIC2_IMMEDIATE_UPDATE, 1);
123 break;
124 case 3:
125 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
126 VPG_GENERIC3_IMMEDIATE_UPDATE, 1);
127 break;
128 case 4:
129 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
130 VPG_GENERIC4_IMMEDIATE_UPDATE, 1);
131 break;
132 case 5:
133 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
134 VPG_GENERIC5_IMMEDIATE_UPDATE, 1);
135 break;
136 case 6:
137 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
138 VPG_GENERIC6_IMMEDIATE_UPDATE, 1);
139 break;
140 case 7:
141 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
142 VPG_GENERIC7_IMMEDIATE_UPDATE, 1);
143 break;
144 case 8:
145 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
146 VPG_GENERIC8_IMMEDIATE_UPDATE, 1);
147 break;
148 case 9:
149 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
150 VPG_GENERIC9_IMMEDIATE_UPDATE, 1);
151 break;
152 case 10:
153 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
154 VPG_GENERIC10_IMMEDIATE_UPDATE, 1);
155 break;
156 case 11:
157 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
158 VPG_GENERIC11_IMMEDIATE_UPDATE, 1);
159 break;
160 case 12:
161 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
162 VPG_GENERIC12_IMMEDIATE_UPDATE, 1);
163 break;
164 case 13:
165 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
166 VPG_GENERIC13_IMMEDIATE_UPDATE, 1);
167 break;
168 case 14:
169 REG_UPDATE(VPG_GSP_IMMEDIATE_UPDATE_CTRL,
170 VPG_GENERIC14_IMMEDIATE_UPDATE, 1);
171 break;
172 default:
173 break;
174 }
175 } else {
176 switch (packet_index) {
177 case 0:
178 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
179 VPG_GENERIC0_FRAME_UPDATE, 1);
180 break;
181 case 1:
182 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
183 VPG_GENERIC1_FRAME_UPDATE, 1);
184 break;
185 case 2:
186 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
187 VPG_GENERIC2_FRAME_UPDATE, 1);
188 break;
189 case 3:
190 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
191 VPG_GENERIC3_FRAME_UPDATE, 1);
192 break;
193 case 4:
194 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
195 VPG_GENERIC4_FRAME_UPDATE, 1);
196 break;
197 case 5:
198 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
199 VPG_GENERIC5_FRAME_UPDATE, 1);
200 break;
201 case 6:
202 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
203 VPG_GENERIC6_FRAME_UPDATE, 1);
204 break;
205 case 7:
206 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
207 VPG_GENERIC7_FRAME_UPDATE, 1);
208 break;
209 case 8:
210 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
211 VPG_GENERIC8_FRAME_UPDATE, 1);
212 break;
213 case 9:
214 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
215 VPG_GENERIC9_FRAME_UPDATE, 1);
216 break;
217 case 10:
218 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
219 VPG_GENERIC10_FRAME_UPDATE, 1);
220 break;
221 case 11:
222 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
223 VPG_GENERIC11_FRAME_UPDATE, 1);
224 break;
225 case 12:
226 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
227 VPG_GENERIC12_FRAME_UPDATE, 1);
228 break;
229 case 13:
230 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
231 VPG_GENERIC13_FRAME_UPDATE, 1);
232 break;
233 case 14:
234 REG_UPDATE(VPG_GSP_FRAME_UPDATE_CTRL,
235 VPG_GENERIC14_FRAME_UPDATE, 1);
236 break;
237
238 default:
239 break;
240 }
241
242 }
243}
244
245static struct vpg_funcs dcn30_vpg_funcs = {
246 .update_generic_info_packet = vpg3_update_generic_info_packet,
247};
248
249void vpg3_construct(struct dcn30_vpg *vpg3,
250 struct dc_context *ctx,
251 uint32_t inst,
252 const struct dcn30_vpg_registers *vpg_regs,
253 const struct dcn30_vpg_shift *vpg_shift,
254 const struct dcn30_vpg_mask *vpg_mask)
255{
256 vpg3->base.ctx = ctx;
257
258 vpg3->base.inst = inst;
259 vpg3->base.funcs = &dcn30_vpg_funcs;
260
261 vpg3->regs = vpg_regs;
262 vpg3->vpg_shift = vpg_shift;
263 vpg3->vpg_mask = vpg_mask;
264}
265

source code of linux/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_vpg.c