1 /*
2 * Xilinx Display Port
3 *
4 * Copyright (C) 2015 : GreenSocs Ltd
5 * http://www.greensocs.com/ , email: info@greensocs.com
6 *
7 * Developed by :
8 * Frederic Konrad <fred.konrad@greensocs.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation, either version 2 of the License, or
13 * (at your option)any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, see <http://www.gnu.org/licenses/>.
22 *
23 */
24
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "qemu/error-report.h"
28 #include "qemu/log.h"
29 #include "qemu/module.h"
30 #include "hw/display/xlnx_dp.h"
31 #include "hw/irq.h"
32 #include "migration/vmstate.h"
33
34 #ifndef DEBUG_DP
35 #define DEBUG_DP 0
36 #endif
37
38 #define DPRINTF(fmt, ...) do { \
39 if (DEBUG_DP) { \
40 qemu_log("xlnx_dp: " fmt , ## __VA_ARGS__); \
41 } \
42 } while (0)
43
44 /*
45 * Register offset for DP.
46 */
47 #define DP_LINK_BW_SET (0x0000 >> 2)
48 #define DP_LANE_COUNT_SET (0x0004 >> 2)
49 #define DP_ENHANCED_FRAME_EN (0x0008 >> 2)
50 #define DP_TRAINING_PATTERN_SET (0x000C >> 2)
51 #define DP_LINK_QUAL_PATTERN_SET (0x0010 >> 2)
52 #define DP_SCRAMBLING_DISABLE (0x0014 >> 2)
53 #define DP_DOWNSPREAD_CTRL (0x0018 >> 2)
54 #define DP_SOFTWARE_RESET (0x001C >> 2)
55 #define DP_TRANSMITTER_ENABLE (0x0080 >> 2)
56 #define DP_MAIN_STREAM_ENABLE (0x0084 >> 2)
57 #define DP_FORCE_SCRAMBLER_RESET (0x00C0 >> 2)
58 #define DP_VERSION_REGISTER (0x00F8 >> 2)
59 #define DP_CORE_ID (0x00FC >> 2)
60
61 #define DP_AUX_COMMAND_REGISTER (0x0100 >> 2)
62 #define AUX_ADDR_ONLY_MASK (0x1000)
63 #define AUX_COMMAND_MASK (0x0F00)
64 #define AUX_COMMAND_SHIFT (8)
65 #define AUX_COMMAND_NBYTES (0x000F)
66
67 #define DP_AUX_WRITE_FIFO (0x0104 >> 2)
68 #define DP_AUX_ADDRESS (0x0108 >> 2)
69 #define DP_AUX_CLOCK_DIVIDER (0x010C >> 2)
70 #define DP_TX_USER_FIFO_OVERFLOW (0x0110 >> 2)
71 #define DP_INTERRUPT_SIGNAL_STATE (0x0130 >> 2)
72 #define DP_AUX_REPLY_DATA (0x0134 >> 2)
73 #define DP_AUX_REPLY_CODE (0x0138 >> 2)
74 #define DP_AUX_REPLY_COUNT (0x013C >> 2)
75 #define DP_REPLY_DATA_COUNT (0x0148 >> 2)
76 #define DP_REPLY_STATUS (0x014C >> 2)
77 #define DP_HPD_DURATION (0x0150 >> 2)
78 #define DP_MAIN_STREAM_HTOTAL (0x0180 >> 2)
79 #define DP_MAIN_STREAM_VTOTAL (0x0184 >> 2)
80 #define DP_MAIN_STREAM_POLARITY (0x0188 >> 2)
81 #define DP_MAIN_STREAM_HSWIDTH (0x018C >> 2)
82 #define DP_MAIN_STREAM_VSWIDTH (0x0190 >> 2)
83 #define DP_MAIN_STREAM_HRES (0x0194 >> 2)
84 #define DP_MAIN_STREAM_VRES (0x0198 >> 2)
85 #define DP_MAIN_STREAM_HSTART (0x019C >> 2)
86 #define DP_MAIN_STREAM_VSTART (0x01A0 >> 2)
87 #define DP_MAIN_STREAM_MISC0 (0x01A4 >> 2)
88 #define DP_MAIN_STREAM_MISC1 (0x01A8 >> 2)
89 #define DP_MAIN_STREAM_M_VID (0x01AC >> 2)
90 #define DP_MSA_TRANSFER_UNIT_SIZE (0x01B0 >> 2)
91 #define DP_MAIN_STREAM_N_VID (0x01B4 >> 2)
92 #define DP_USER_DATA_COUNT_PER_LANE (0x01BC >> 2)
93 #define DP_MIN_BYTES_PER_TU (0x01C4 >> 2)
94 #define DP_FRAC_BYTES_PER_TU (0x01C8 >> 2)
95 #define DP_INIT_WAIT (0x01CC >> 2)
96 #define DP_PHY_RESET (0x0200 >> 2)
97 #define DP_PHY_VOLTAGE_DIFF_LANE_0 (0x0220 >> 2)
98 #define DP_PHY_VOLTAGE_DIFF_LANE_1 (0x0224 >> 2)
99 #define DP_TRANSMIT_PRBS7 (0x0230 >> 2)
100 #define DP_PHY_CLOCK_SELECT (0x0234 >> 2)
101 #define DP_TX_PHY_POWER_DOWN (0x0238 >> 2)
102 #define DP_PHY_PRECURSOR_LANE_0 (0x023C >> 2)
103 #define DP_PHY_PRECURSOR_LANE_1 (0x0240 >> 2)
104 #define DP_PHY_POSTCURSOR_LANE_0 (0x024C >> 2)
105 #define DP_PHY_POSTCURSOR_LANE_1 (0x0250 >> 2)
106 #define DP_PHY_STATUS (0x0280 >> 2)
107
108 #define DP_TX_AUDIO_CONTROL (0x0300 >> 2)
109 #define DP_TX_AUD_CTRL (1)
110
111 #define DP_TX_AUDIO_CHANNELS (0x0304 >> 2)
112 #define DP_TX_AUDIO_INFO_DATA(n) ((0x0308 + 4 * n) >> 2)
113 #define DP_TX_M_AUD (0x0328 >> 2)
114 #define DP_TX_N_AUD (0x032C >> 2)
115 #define DP_TX_AUDIO_EXT_DATA(n) ((0x0330 + 4 * n) >> 2)
116 #define DP_INT_STATUS (0x03A0 >> 2)
117 #define DP_INT_VBLNK_START (1 << 13)
118 #define DP_INT_MASK (0x03A4 >> 2)
119 #define DP_INT_EN (0x03A8 >> 2)
120 #define DP_INT_DS (0x03AC >> 2)
121
122 /*
123 * Registers offset for Audio Video Buffer configuration.
124 */
125 #define V_BLEND_OFFSET (0xA000)
126 #define V_BLEND_BG_CLR_0 (0x0000 >> 2)
127 #define V_BLEND_BG_CLR_1 (0x0004 >> 2)
128 #define V_BLEND_BG_CLR_2 (0x0008 >> 2)
129 #define V_BLEND_SET_GLOBAL_ALPHA_REG (0x000C >> 2)
130 #define V_BLEND_OUTPUT_VID_FORMAT (0x0014 >> 2)
131 #define V_BLEND_LAYER0_CONTROL (0x0018 >> 2)
132 #define V_BLEND_LAYER1_CONTROL (0x001C >> 2)
133
134 #define V_BLEND_RGB2YCBCR_COEFF(n) ((0x0020 + 4 * n) >> 2)
135 #define V_BLEND_IN1CSC_COEFF(n) ((0x0044 + 4 * n) >> 2)
136
137 #define V_BLEND_LUMA_IN1CSC_OFFSET (0x0068 >> 2)
138 #define V_BLEND_CR_IN1CSC_OFFSET (0x006C >> 2)
139 #define V_BLEND_CB_IN1CSC_OFFSET (0x0070 >> 2)
140 #define V_BLEND_LUMA_OUTCSC_OFFSET (0x0074 >> 2)
141 #define V_BLEND_CR_OUTCSC_OFFSET (0x0078 >> 2)
142 #define V_BLEND_CB_OUTCSC_OFFSET (0x007C >> 2)
143
144 #define V_BLEND_IN2CSC_COEFF(n) ((0x0080 + 4 * n) >> 2)
145
146 #define V_BLEND_LUMA_IN2CSC_OFFSET (0x00A4 >> 2)
147 #define V_BLEND_CR_IN2CSC_OFFSET (0x00A8 >> 2)
148 #define V_BLEND_CB_IN2CSC_OFFSET (0x00AC >> 2)
149 #define V_BLEND_CHROMA_KEY_ENABLE (0x01D0 >> 2)
150 #define V_BLEND_CHROMA_KEY_COMP1 (0x01D4 >> 2)
151 #define V_BLEND_CHROMA_KEY_COMP2 (0x01D8 >> 2)
152 #define V_BLEND_CHROMA_KEY_COMP3 (0x01DC >> 2)
153
154 /*
155 * Registers offset for Audio Video Buffer configuration.
156 */
157 #define AV_BUF_MANAGER_OFFSET (0xB000)
158 #define AV_BUF_FORMAT (0x0000 >> 2)
159 #define AV_BUF_NON_LIVE_LATENCY (0x0008 >> 2)
160 #define AV_CHBUF0 (0x0010 >> 2)
161 #define AV_CHBUF1 (0x0014 >> 2)
162 #define AV_CHBUF2 (0x0018 >> 2)
163 #define AV_CHBUF3 (0x001C >> 2)
164 #define AV_CHBUF4 (0x0020 >> 2)
165 #define AV_CHBUF5 (0x0024 >> 2)
166 #define AV_BUF_STC_CONTROL (0x002C >> 2)
167 #define AV_BUF_STC_INIT_VALUE0 (0x0030 >> 2)
168 #define AV_BUF_STC_INIT_VALUE1 (0x0034 >> 2)
169 #define AV_BUF_STC_ADJ (0x0038 >> 2)
170 #define AV_BUF_STC_VIDEO_VSYNC_TS_REG0 (0x003C >> 2)
171 #define AV_BUF_STC_VIDEO_VSYNC_TS_REG1 (0x0040 >> 2)
172 #define AV_BUF_STC_EXT_VSYNC_TS_REG0 (0x0044 >> 2)
173 #define AV_BUF_STC_EXT_VSYNC_TS_REG1 (0x0048 >> 2)
174 #define AV_BUF_STC_CUSTOM_EVENT_TS_REG0 (0x004C >> 2)
175 #define AV_BUF_STC_CUSTOM_EVENT_TS_REG1 (0x0050 >> 2)
176 #define AV_BUF_STC_CUSTOM_EVENT2_TS_REG0 (0x0054 >> 2)
177 #define AV_BUF_STC_CUSTOM_EVENT2_TS_REG1 (0x0058 >> 2)
178 #define AV_BUF_STC_SNAPSHOT0 (0x0060 >> 2)
179 #define AV_BUF_STC_SNAPSHOT1 (0x0064 >> 2)
180 #define AV_BUF_OUTPUT_AUDIO_VIDEO_SELECT (0x0070 >> 2)
181 #define AV_BUF_HCOUNT_VCOUNT_INT0 (0x0074 >> 2)
182 #define AV_BUF_HCOUNT_VCOUNT_INT1 (0x0078 >> 2)
183 #define AV_BUF_DITHER_CONFIG (0x007C >> 2)
184 #define AV_BUF_DITHER_CONFIG_MAX (0x008C >> 2)
185 #define AV_BUF_DITHER_CONFIG_MIN (0x0090 >> 2)
186 #define AV_BUF_PATTERN_GEN_SELECT (0x0100 >> 2)
187 #define AV_BUF_AUD_VID_CLK_SOURCE (0x0120 >> 2)
188 #define AV_BUF_SRST_REG (0x0124 >> 2)
189 #define AV_BUF_AUDIO_RDY_INTERVAL (0x0128 >> 2)
190 #define AV_BUF_AUDIO_CH_CONFIG (0x012C >> 2)
191
192 #define AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(n)((0x0200 + 4 * n) >> 2)
193
194 #define AV_BUF_VIDEO_COMP_SCALE_FACTOR(n) ((0x020C + 4 * n) >> 2)
195
196 #define AV_BUF_LIVE_VIDEO_COMP_SF(n) ((0x0218 + 4 * n) >> 2)
197
198 #define AV_BUF_LIVE_VID_CONFIG (0x0224 >> 2)
199
200 #define AV_BUF_LIVE_GFX_COMP_SF(n) ((0x0228 + 4 * n) >> 2)
201
202 #define AV_BUF_LIVE_GFX_CONFIG (0x0234 >> 2)
203
204 #define AUDIO_MIXER_REGISTER_OFFSET (0xC000)
205 #define AUDIO_MIXER_VOLUME_CONTROL (0x0000 >> 2)
206 #define AUDIO_MIXER_META_DATA (0x0004 >> 2)
207 #define AUD_CH_STATUS_REG(n) ((0x0008 + 4 * n) >> 2)
208 #define AUD_CH_A_DATA_REG(n) ((0x0020 + 4 * n) >> 2)
209 #define AUD_CH_B_DATA_REG(n) ((0x0038 + 4 * n) >> 2)
210
211 #define DP_AUDIO_DMA_CHANNEL(n) (4 + n)
212 #define DP_GRAPHIC_DMA_CHANNEL (3)
213 #define DP_VIDEO_DMA_CHANNEL (0)
214
215 enum DPGraphicFmt {
216 DP_GRAPHIC_RGBA8888 = 0 << 8,
217 DP_GRAPHIC_ABGR8888 = 1 << 8,
218 DP_GRAPHIC_RGB888 = 2 << 8,
219 DP_GRAPHIC_BGR888 = 3 << 8,
220 DP_GRAPHIC_RGBA5551 = 4 << 8,
221 DP_GRAPHIC_RGBA4444 = 5 << 8,
222 DP_GRAPHIC_RGB565 = 6 << 8,
223 DP_GRAPHIC_8BPP = 7 << 8,
224 DP_GRAPHIC_4BPP = 8 << 8,
225 DP_GRAPHIC_2BPP = 9 << 8,
226 DP_GRAPHIC_1BPP = 10 << 8,
227 DP_GRAPHIC_MASK = 0xF << 8
228 };
229
230 enum DPVideoFmt {
231 DP_NL_VID_CB_Y0_CR_Y1 = 0,
232 DP_NL_VID_CR_Y0_CB_Y1 = 1,
233 DP_NL_VID_Y0_CR_Y1_CB = 2,
234 DP_NL_VID_Y0_CB_Y1_CR = 3,
235 DP_NL_VID_YV16 = 4,
236 DP_NL_VID_YV24 = 5,
237 DP_NL_VID_YV16CL = 6,
238 DP_NL_VID_MONO = 7,
239 DP_NL_VID_YV16CL2 = 8,
240 DP_NL_VID_YUV444 = 9,
241 DP_NL_VID_RGB888 = 10,
242 DP_NL_VID_RGBA8880 = 11,
243 DP_NL_VID_RGB888_10BPC = 12,
244 DP_NL_VID_YUV444_10BPC = 13,
245 DP_NL_VID_YV16CL2_10BPC = 14,
246 DP_NL_VID_YV16CL_10BPC = 15,
247 DP_NL_VID_YV16_10BPC = 16,
248 DP_NL_VID_YV24_10BPC = 17,
249 DP_NL_VID_Y_ONLY_10BPC = 18,
250 DP_NL_VID_YV16_420 = 19,
251 DP_NL_VID_YV16CL_420 = 20,
252 DP_NL_VID_YV16CL2_420 = 21,
253 DP_NL_VID_YV16_420_10BPC = 22,
254 DP_NL_VID_YV16CL_420_10BPC = 23,
255 DP_NL_VID_YV16CL2_420_10BPC = 24,
256 DP_NL_VID_FMT_MASK = 0x1F
257 };
258
259 typedef enum DPGraphicFmt DPGraphicFmt;
260 typedef enum DPVideoFmt DPVideoFmt;
261
262 static const VMStateDescription vmstate_dp = {
263 .name = TYPE_XLNX_DP,
264 .version_id = 2,
265 .fields = (const VMStateField[]){
266 VMSTATE_UINT32_ARRAY(core_registers, XlnxDPState,
267 DP_CORE_REG_ARRAY_SIZE),
268 VMSTATE_UINT32_ARRAY(avbufm_registers, XlnxDPState,
269 DP_AVBUF_REG_ARRAY_SIZE),
270 VMSTATE_UINT32_ARRAY(vblend_registers, XlnxDPState,
271 DP_VBLEND_REG_ARRAY_SIZE),
272 VMSTATE_UINT32_ARRAY(audio_registers, XlnxDPState,
273 DP_AUDIO_REG_ARRAY_SIZE),
274 VMSTATE_PTIMER(vblank, XlnxDPState),
275 VMSTATE_END_OF_LIST()
276 }
277 };
278
279 #define DP_VBLANK_PTIMER_POLICY (PTIMER_POLICY_WRAP_AFTER_ONE_PERIOD | \
280 PTIMER_POLICY_CONTINUOUS_TRIGGER | \
281 PTIMER_POLICY_NO_IMMEDIATE_TRIGGER)
282
283 static void xlnx_dp_update_irq(XlnxDPState *s);
284
xlnx_dp_audio_read(void * opaque,hwaddr offset,unsigned size)285 static uint64_t xlnx_dp_audio_read(void *opaque, hwaddr offset, unsigned size)
286 {
287 XlnxDPState *s = XLNX_DP(opaque);
288
289 offset = offset >> 2;
290 return s->audio_registers[offset];
291 }
292
xlnx_dp_audio_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)293 static void xlnx_dp_audio_write(void *opaque, hwaddr offset, uint64_t value,
294 unsigned size)
295 {
296 XlnxDPState *s = XLNX_DP(opaque);
297
298 offset = offset >> 2;
299
300 switch (offset) {
301 case AUDIO_MIXER_META_DATA:
302 s->audio_registers[offset] = value & 0x00000001;
303 break;
304 default:
305 s->audio_registers[offset] = value;
306 break;
307 }
308 }
309
310 static const MemoryRegionOps audio_ops = {
311 .read = xlnx_dp_audio_read,
312 .write = xlnx_dp_audio_write,
313 .endianness = DEVICE_NATIVE_ENDIAN,
314 };
315
xlnx_dp_audio_get_volume(XlnxDPState * s,uint8_t channel)316 static inline uint32_t xlnx_dp_audio_get_volume(XlnxDPState *s,
317 uint8_t channel)
318 {
319 switch (channel) {
320 case 0:
321 return extract32(s->audio_registers[AUDIO_MIXER_VOLUME_CONTROL], 0, 16);
322 case 1:
323 return extract32(s->audio_registers[AUDIO_MIXER_VOLUME_CONTROL], 16,
324 16);
325 default:
326 return 0;
327 }
328 }
329
xlnx_dp_audio_activate(XlnxDPState * s)330 static inline void xlnx_dp_audio_activate(XlnxDPState *s)
331 {
332 bool activated = ((s->core_registers[DP_TX_AUDIO_CONTROL]
333 & DP_TX_AUD_CTRL) != 0);
334 AUD_set_active_out(s->amixer_output_stream, activated);
335 xlnx_dpdma_set_host_data_location(s->dpdma, DP_AUDIO_DMA_CHANNEL(0),
336 &s->audio_buffer_0);
337 xlnx_dpdma_set_host_data_location(s->dpdma, DP_AUDIO_DMA_CHANNEL(1),
338 &s->audio_buffer_1);
339 }
340
xlnx_dp_audio_mix_buffer(XlnxDPState * s)341 static inline void xlnx_dp_audio_mix_buffer(XlnxDPState *s)
342 {
343 /*
344 * Audio packets are signed and have this shape:
345 * | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
346 * | R3 | L3 | R2 | L2 | R1 | L1 | R0 | L0 |
347 *
348 * Output audio is 16bits saturated.
349 */
350 int i;
351
352 if ((s->audio_data_available[0]) && (xlnx_dp_audio_get_volume(s, 0))) {
353 for (i = 0; i < s->audio_data_available[0] / 2; i++) {
354 s->temp_buffer[i] = (int64_t)(s->audio_buffer_0[i])
355 * xlnx_dp_audio_get_volume(s, 0) / 8192;
356 }
357 s->byte_left = s->audio_data_available[0];
358 } else {
359 memset(s->temp_buffer, 0, s->audio_data_available[1] / 2);
360 }
361
362 if ((s->audio_data_available[1]) && (xlnx_dp_audio_get_volume(s, 1))) {
363 if ((s->audio_data_available[0] == 0)
364 || (s->audio_data_available[1] == s->audio_data_available[0])) {
365 for (i = 0; i < s->audio_data_available[1] / 2; i++) {
366 s->temp_buffer[i] += (int64_t)(s->audio_buffer_1[i])
367 * xlnx_dp_audio_get_volume(s, 1) / 8192;
368 }
369 s->byte_left = s->audio_data_available[1];
370 }
371 }
372
373 for (i = 0; i < s->byte_left / 2; i++) {
374 s->out_buffer[i] = MAX(-32767, MIN(s->temp_buffer[i], 32767));
375 }
376
377 s->data_ptr = 0;
378 }
379
xlnx_dp_audio_callback(void * opaque,int avail)380 static void xlnx_dp_audio_callback(void *opaque, int avail)
381 {
382 /*
383 * Get the individual left and right audio streams from the DPDMA,
384 * and fill the output buffer with the combined stereo audio data
385 * adjusted by the volume controls.
386 * QEMU's audio subsystem will call this callback repeatedly;
387 * we return the data from the output buffer until it is emptied,
388 * and then we will read data from the DPDMA again.
389 */
390 XlnxDPState *s = XLNX_DP(opaque);
391 size_t written = 0;
392
393 if (s->byte_left == 0) {
394 s->audio_data_available[0] = xlnx_dpdma_start_operation(s->dpdma, 4,
395 true);
396 s->audio_data_available[1] = xlnx_dpdma_start_operation(s->dpdma, 5,
397 true);
398 xlnx_dp_audio_mix_buffer(s);
399 }
400
401 /* Send the buffer through the audio. */
402 if (s->byte_left <= MAX_QEMU_BUFFER_SIZE) {
403 if (s->byte_left != 0) {
404 written = AUD_write(s->amixer_output_stream,
405 &s->out_buffer[s->data_ptr], s->byte_left);
406 } else {
407 int len_to_copy;
408 /*
409 * There is nothing to play.. We don't have any data! Fill the
410 * buffer with zero's and send it.
411 */
412 written = 0;
413 while (avail) {
414 len_to_copy = MIN(AUD_CHBUF_MAX_DEPTH, avail);
415 memset(s->out_buffer, 0, len_to_copy);
416 avail -= AUD_write(s->amixer_output_stream, s->out_buffer,
417 len_to_copy);
418 }
419 }
420 } else {
421 written = AUD_write(s->amixer_output_stream,
422 &s->out_buffer[s->data_ptr], MAX_QEMU_BUFFER_SIZE);
423 }
424 s->byte_left -= written;
425 s->data_ptr += written;
426 }
427
428 /*
429 * AUX channel related function.
430 */
xlnx_dp_aux_clear_rx_fifo(XlnxDPState * s)431 static void xlnx_dp_aux_clear_rx_fifo(XlnxDPState *s)
432 {
433 fifo8_reset(&s->rx_fifo);
434 }
435
xlnx_dp_aux_push_rx_fifo(XlnxDPState * s,uint8_t * buf,size_t len)436 static void xlnx_dp_aux_push_rx_fifo(XlnxDPState *s, uint8_t *buf, size_t len)
437 {
438 DPRINTF("Push %u data in rx_fifo\n", (unsigned)len);
439 fifo8_push_all(&s->rx_fifo, buf, len);
440 }
441
xlnx_dp_aux_pop_rx_fifo(XlnxDPState * s)442 static uint8_t xlnx_dp_aux_pop_rx_fifo(XlnxDPState *s)
443 {
444 uint8_t ret;
445
446 if (fifo8_is_empty(&s->rx_fifo)) {
447 qemu_log_mask(LOG_GUEST_ERROR,
448 "%s: Reading empty RX_FIFO\n",
449 __func__);
450 /*
451 * The datasheet is not clear about the reset value, it seems
452 * to be unspecified. We choose to return '0'.
453 */
454 ret = 0;
455 } else {
456 ret = fifo8_pop(&s->rx_fifo);
457 DPRINTF("pop 0x%" PRIX8 " from rx_fifo.\n", ret);
458 }
459 return ret;
460 }
461
xlnx_dp_aux_clear_tx_fifo(XlnxDPState * s)462 static void xlnx_dp_aux_clear_tx_fifo(XlnxDPState *s)
463 {
464 fifo8_reset(&s->tx_fifo);
465 }
466
xlnx_dp_aux_push_tx_fifo(XlnxDPState * s,uint8_t * buf,size_t len)467 static void xlnx_dp_aux_push_tx_fifo(XlnxDPState *s, uint8_t *buf, size_t len)
468 {
469 DPRINTF("Push %u data in tx_fifo\n", (unsigned)len);
470 fifo8_push_all(&s->tx_fifo, buf, len);
471 }
472
xlnx_dp_aux_pop_tx_fifo(XlnxDPState * s)473 static uint8_t xlnx_dp_aux_pop_tx_fifo(XlnxDPState *s)
474 {
475 uint8_t ret;
476
477 if (fifo8_is_empty(&s->tx_fifo)) {
478 error_report("%s: TX_FIFO underflow", __func__);
479 abort();
480 }
481 ret = fifo8_pop(&s->tx_fifo);
482 DPRINTF("pop 0x%2.2X from tx_fifo.\n", ret);
483 return ret;
484 }
485
xlnx_dp_aux_get_address(XlnxDPState * s)486 static uint32_t xlnx_dp_aux_get_address(XlnxDPState *s)
487 {
488 return s->core_registers[DP_AUX_ADDRESS];
489 }
490
491 /*
492 * Get command from the register.
493 */
xlnx_dp_aux_set_command(XlnxDPState * s,uint32_t value)494 static void xlnx_dp_aux_set_command(XlnxDPState *s, uint32_t value)
495 {
496 bool address_only = (value & AUX_ADDR_ONLY_MASK) != 0;
497 AUXCommand cmd = (value & AUX_COMMAND_MASK) >> AUX_COMMAND_SHIFT;
498 uint8_t nbytes = (value & AUX_COMMAND_NBYTES) + 1;
499 uint8_t buf[16];
500 int i;
501
502 /*
503 * When an address_only command is executed nothing happen to the fifo, so
504 * just make nbytes = 0.
505 */
506 if (address_only) {
507 nbytes = 0;
508 }
509
510 switch (cmd) {
511 case READ_AUX:
512 case READ_I2C:
513 case READ_I2C_MOT:
514 s->core_registers[DP_AUX_REPLY_CODE] = aux_request(s->aux_bus, cmd,
515 xlnx_dp_aux_get_address(s),
516 nbytes, buf);
517 s->core_registers[DP_REPLY_DATA_COUNT] = nbytes;
518
519 if (s->core_registers[DP_AUX_REPLY_CODE] == AUX_I2C_ACK) {
520 xlnx_dp_aux_push_rx_fifo(s, buf, nbytes);
521 }
522 break;
523 case WRITE_AUX:
524 case WRITE_I2C:
525 case WRITE_I2C_MOT:
526 for (i = 0; i < nbytes; i++) {
527 buf[i] = xlnx_dp_aux_pop_tx_fifo(s);
528 }
529 s->core_registers[DP_AUX_REPLY_CODE] = aux_request(s->aux_bus, cmd,
530 xlnx_dp_aux_get_address(s),
531 nbytes, buf);
532 xlnx_dp_aux_clear_tx_fifo(s);
533 break;
534 case WRITE_I2C_STATUS:
535 qemu_log_mask(LOG_UNIMP, "xlnx_dp: Write i2c status not implemented\n");
536 break;
537 default:
538 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid command: %u", __func__, cmd);
539 return;
540 }
541
542 s->core_registers[DP_INTERRUPT_SIGNAL_STATE] |= 0x04;
543 }
544
xlnx_dp_set_dpdma(const Object * obj,const char * name,Object * val,Error ** errp)545 static void xlnx_dp_set_dpdma(const Object *obj, const char *name, Object *val,
546 Error **errp)
547 {
548 XlnxDPState *s = XLNX_DP(obj);
549 if (s->console) {
550 DisplaySurface *surface = qemu_console_surface(s->console);
551 XlnxDPDMAState *dma = XLNX_DPDMA(val);
552 xlnx_dpdma_set_host_data_location(dma, DP_GRAPHIC_DMA_CHANNEL,
553 surface_data(surface));
554 }
555 }
556
xlnx_dp_global_alpha_value(XlnxDPState * s)557 static inline uint8_t xlnx_dp_global_alpha_value(XlnxDPState *s)
558 {
559 return (s->vblend_registers[V_BLEND_SET_GLOBAL_ALPHA_REG] & 0x1FE) >> 1;
560 }
561
xlnx_dp_global_alpha_enabled(XlnxDPState * s)562 static inline bool xlnx_dp_global_alpha_enabled(XlnxDPState *s)
563 {
564 /*
565 * If the alpha is totally opaque (255) we consider the alpha is disabled to
566 * reduce CPU consumption.
567 */
568 return ((xlnx_dp_global_alpha_value(s) != 0xFF) &&
569 ((s->vblend_registers[V_BLEND_SET_GLOBAL_ALPHA_REG] & 0x01) != 0));
570 }
571
xlnx_dp_recreate_surface(XlnxDPState * s)572 static void xlnx_dp_recreate_surface(XlnxDPState *s)
573 {
574 /*
575 * Two possibilities, if blending is enabled the console displays
576 * bout_plane, if not g_plane is displayed.
577 */
578 uint16_t width = s->core_registers[DP_MAIN_STREAM_HRES];
579 uint16_t height = s->core_registers[DP_MAIN_STREAM_VRES];
580 DisplaySurface *current_console_surface = qemu_console_surface(s->console);
581
582 if ((width != 0) && (height != 0)) {
583 /*
584 * As dpy_gfx_replace_surface calls qemu_free_displaysurface on the
585 * surface we need to be careful and don't free the surface associated
586 * to the console or double free will happen.
587 */
588 if (s->bout_plane.surface != current_console_surface) {
589 qemu_free_displaysurface(s->bout_plane.surface);
590 }
591 if (s->v_plane.surface != current_console_surface) {
592 qemu_free_displaysurface(s->v_plane.surface);
593 }
594 if (s->g_plane.surface != current_console_surface) {
595 qemu_free_displaysurface(s->g_plane.surface);
596 }
597
598 s->g_plane.surface
599 = qemu_create_displaysurface_from(width, height,
600 s->g_plane.format, 0, NULL);
601 s->v_plane.surface
602 = qemu_create_displaysurface_from(width, height,
603 s->v_plane.format, 0, NULL);
604 if (xlnx_dp_global_alpha_enabled(s)) {
605 s->bout_plane.surface =
606 qemu_create_displaysurface_from(width,
607 height,
608 s->g_plane.format,
609 0, NULL);
610 dpy_gfx_replace_surface(s->console, s->bout_plane.surface);
611 } else {
612 s->bout_plane.surface = NULL;
613 dpy_gfx_replace_surface(s->console, s->g_plane.surface);
614 }
615
616 xlnx_dpdma_set_host_data_location(s->dpdma, DP_GRAPHIC_DMA_CHANNEL,
617 surface_data(s->g_plane.surface));
618 xlnx_dpdma_set_host_data_location(s->dpdma, DP_VIDEO_DMA_CHANNEL,
619 surface_data(s->v_plane.surface));
620 }
621 }
622
623 /*
624 * Change the graphic format of the surface.
625 */
xlnx_dp_change_graphic_fmt(XlnxDPState * s)626 static void xlnx_dp_change_graphic_fmt(XlnxDPState *s)
627 {
628 switch (s->avbufm_registers[AV_BUF_FORMAT] & DP_GRAPHIC_MASK) {
629 case DP_GRAPHIC_RGBA8888:
630 s->g_plane.format = PIXMAN_r8g8b8a8;
631 break;
632 case DP_GRAPHIC_ABGR8888:
633 s->g_plane.format = PIXMAN_a8b8g8r8;
634 break;
635 case DP_GRAPHIC_RGB565:
636 s->g_plane.format = PIXMAN_r5g6b5;
637 break;
638 case DP_GRAPHIC_RGB888:
639 s->g_plane.format = PIXMAN_r8g8b8;
640 break;
641 case DP_GRAPHIC_BGR888:
642 s->g_plane.format = PIXMAN_b8g8r8;
643 break;
644 default:
645 error_report("%s: unsupported graphic format %u", __func__,
646 s->avbufm_registers[AV_BUF_FORMAT] & DP_GRAPHIC_MASK);
647 abort();
648 }
649
650 switch (s->avbufm_registers[AV_BUF_FORMAT] & DP_NL_VID_FMT_MASK) {
651 case 0:
652 s->v_plane.format = PIXMAN_x8b8g8r8;
653 break;
654 case DP_NL_VID_Y0_CB_Y1_CR:
655 s->v_plane.format = PIXMAN_yuy2;
656 break;
657 case DP_NL_VID_RGBA8880:
658 s->v_plane.format = PIXMAN_x8b8g8r8;
659 break;
660 default:
661 error_report("%s: unsupported video format %u", __func__,
662 s->avbufm_registers[AV_BUF_FORMAT] & DP_NL_VID_FMT_MASK);
663 abort();
664 }
665
666 xlnx_dp_recreate_surface(s);
667 }
668
xlnx_dp_update_irq(XlnxDPState * s)669 static void xlnx_dp_update_irq(XlnxDPState *s)
670 {
671 uint32_t flags;
672
673 flags = s->core_registers[DP_INT_STATUS] & ~s->core_registers[DP_INT_MASK];
674 DPRINTF("update IRQ value = %" PRIx32 "\n", flags);
675 qemu_set_irq(s->irq, flags != 0);
676 }
677
xlnx_dp_read(void * opaque,hwaddr offset,unsigned size)678 static uint64_t xlnx_dp_read(void *opaque, hwaddr offset, unsigned size)
679 {
680 XlnxDPState *s = XLNX_DP(opaque);
681 uint64_t ret = 0;
682
683 offset = offset >> 2;
684
685 switch (offset) {
686 case DP_TX_USER_FIFO_OVERFLOW:
687 /* This register is cleared after a read */
688 ret = s->core_registers[DP_TX_USER_FIFO_OVERFLOW];
689 s->core_registers[DP_TX_USER_FIFO_OVERFLOW] = 0;
690 break;
691 case DP_AUX_REPLY_DATA:
692 ret = xlnx_dp_aux_pop_rx_fifo(s);
693 break;
694 case DP_INTERRUPT_SIGNAL_STATE:
695 /*
696 * XXX: Not sure it is the right thing to do actually.
697 * The register is not written by the device driver so it's stuck
698 * to 0x04.
699 */
700 ret = s->core_registers[DP_INTERRUPT_SIGNAL_STATE];
701 s->core_registers[DP_INTERRUPT_SIGNAL_STATE] &= ~0x04;
702 break;
703 case DP_AUX_WRITE_FIFO:
704 case DP_TX_AUDIO_INFO_DATA(0):
705 case DP_TX_AUDIO_INFO_DATA(1):
706 case DP_TX_AUDIO_INFO_DATA(2):
707 case DP_TX_AUDIO_INFO_DATA(3):
708 case DP_TX_AUDIO_INFO_DATA(4):
709 case DP_TX_AUDIO_INFO_DATA(5):
710 case DP_TX_AUDIO_INFO_DATA(6):
711 case DP_TX_AUDIO_INFO_DATA(7):
712 case DP_TX_AUDIO_EXT_DATA(0):
713 case DP_TX_AUDIO_EXT_DATA(1):
714 case DP_TX_AUDIO_EXT_DATA(2):
715 case DP_TX_AUDIO_EXT_DATA(3):
716 case DP_TX_AUDIO_EXT_DATA(4):
717 case DP_TX_AUDIO_EXT_DATA(5):
718 case DP_TX_AUDIO_EXT_DATA(6):
719 case DP_TX_AUDIO_EXT_DATA(7):
720 case DP_TX_AUDIO_EXT_DATA(8):
721 /* write only registers */
722 ret = 0;
723 break;
724 default:
725 assert(offset <= (0x3AC >> 2));
726 if (offset == (0x3A8 >> 2) || offset == (0x3AC >> 2)) {
727 ret = s->core_registers[DP_INT_MASK];
728 } else {
729 ret = s->core_registers[offset];
730 }
731 break;
732 }
733
734 DPRINTF("core read @%" PRIx64 " = 0x%8.8" PRIX64 "\n", offset << 2, ret);
735 return ret;
736 }
737
xlnx_dp_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)738 static void xlnx_dp_write(void *opaque, hwaddr offset, uint64_t value,
739 unsigned size)
740 {
741 XlnxDPState *s = XLNX_DP(opaque);
742
743 DPRINTF("core write @%" PRIx64 " = 0x%8.8" PRIX64 "\n", offset, value);
744
745 offset = offset >> 2;
746
747 switch (offset) {
748 /*
749 * Only special write case are handled.
750 */
751 case DP_LINK_BW_SET:
752 s->core_registers[offset] = value & 0x000000FF;
753 break;
754 case DP_LANE_COUNT_SET:
755 case DP_MAIN_STREAM_MISC0:
756 s->core_registers[offset] = value & 0x0000000F;
757 break;
758 case DP_TRAINING_PATTERN_SET:
759 case DP_LINK_QUAL_PATTERN_SET:
760 case DP_MAIN_STREAM_POLARITY:
761 case DP_PHY_VOLTAGE_DIFF_LANE_0:
762 case DP_PHY_VOLTAGE_DIFF_LANE_1:
763 s->core_registers[offset] = value & 0x00000003;
764 break;
765 case DP_ENHANCED_FRAME_EN:
766 case DP_SCRAMBLING_DISABLE:
767 case DP_DOWNSPREAD_CTRL:
768 case DP_MAIN_STREAM_ENABLE:
769 case DP_TRANSMIT_PRBS7:
770 s->core_registers[offset] = value & 0x00000001;
771 break;
772 case DP_PHY_CLOCK_SELECT:
773 s->core_registers[offset] = value & 0x00000007;
774 break;
775 case DP_SOFTWARE_RESET:
776 /*
777 * No need to update this bit as it's read '0'.
778 */
779 /*
780 * TODO: reset IP.
781 */
782 break;
783 case DP_TRANSMITTER_ENABLE:
784 s->core_registers[offset] = value & 0x01;
785 ptimer_transaction_begin(s->vblank);
786 if (value & 0x1) {
787 ptimer_run(s->vblank, 0);
788 } else {
789 ptimer_stop(s->vblank);
790 }
791 ptimer_transaction_commit(s->vblank);
792 break;
793 case DP_FORCE_SCRAMBLER_RESET:
794 /*
795 * No need to update this bit as it's read '0'.
796 */
797 /*
798 * TODO: force a scrambler reset??
799 */
800 break;
801 case DP_AUX_COMMAND_REGISTER:
802 s->core_registers[offset] = value & 0x00001F0F;
803 xlnx_dp_aux_set_command(s, s->core_registers[offset]);
804 break;
805 case DP_MAIN_STREAM_HTOTAL:
806 case DP_MAIN_STREAM_VTOTAL:
807 case DP_MAIN_STREAM_HSTART:
808 case DP_MAIN_STREAM_VSTART:
809 s->core_registers[offset] = value & 0x0000FFFF;
810 break;
811 case DP_MAIN_STREAM_HRES:
812 case DP_MAIN_STREAM_VRES:
813 s->core_registers[offset] = value & 0x0000FFFF;
814 xlnx_dp_recreate_surface(s);
815 break;
816 case DP_MAIN_STREAM_HSWIDTH:
817 case DP_MAIN_STREAM_VSWIDTH:
818 s->core_registers[offset] = value & 0x00007FFF;
819 break;
820 case DP_MAIN_STREAM_MISC1:
821 s->core_registers[offset] = value & 0x00000086;
822 break;
823 case DP_MAIN_STREAM_M_VID:
824 case DP_MAIN_STREAM_N_VID:
825 s->core_registers[offset] = value & 0x00FFFFFF;
826 break;
827 case DP_MSA_TRANSFER_UNIT_SIZE:
828 case DP_MIN_BYTES_PER_TU:
829 case DP_INIT_WAIT:
830 s->core_registers[offset] = value & 0x00000007;
831 break;
832 case DP_USER_DATA_COUNT_PER_LANE:
833 s->core_registers[offset] = value & 0x0003FFFF;
834 break;
835 case DP_FRAC_BYTES_PER_TU:
836 s->core_registers[offset] = value & 0x000003FF;
837 break;
838 case DP_PHY_RESET:
839 s->core_registers[offset] = value & 0x00010003;
840 /*
841 * TODO: Reset something?
842 */
843 break;
844 case DP_TX_PHY_POWER_DOWN:
845 s->core_registers[offset] = value & 0x0000000F;
846 /*
847 * TODO: Power down things?
848 */
849 break;
850 case DP_AUX_WRITE_FIFO: {
851 uint8_t c = value;
852 xlnx_dp_aux_push_tx_fifo(s, &c, 1);
853 break;
854 }
855 case DP_AUX_CLOCK_DIVIDER:
856 break;
857 case DP_AUX_REPLY_COUNT:
858 /*
859 * Writing to this register clear the counter.
860 */
861 s->core_registers[offset] = 0x00000000;
862 break;
863 case DP_AUX_ADDRESS:
864 s->core_registers[offset] = value & 0x000FFFFF;
865 break;
866 case DP_VERSION_REGISTER:
867 case DP_CORE_ID:
868 case DP_TX_USER_FIFO_OVERFLOW:
869 case DP_AUX_REPLY_DATA:
870 case DP_AUX_REPLY_CODE:
871 case DP_REPLY_DATA_COUNT:
872 case DP_REPLY_STATUS:
873 case DP_HPD_DURATION:
874 /*
875 * Write to read only location..
876 */
877 break;
878 case DP_TX_AUDIO_CONTROL:
879 s->core_registers[offset] = value & 0x00000001;
880 xlnx_dp_audio_activate(s);
881 break;
882 case DP_TX_AUDIO_CHANNELS:
883 s->core_registers[offset] = value & 0x00000007;
884 xlnx_dp_audio_activate(s);
885 break;
886 case DP_INT_STATUS:
887 s->core_registers[DP_INT_STATUS] &= ~value;
888 xlnx_dp_update_irq(s);
889 break;
890 case DP_INT_EN:
891 s->core_registers[DP_INT_MASK] &= ~value;
892 xlnx_dp_update_irq(s);
893 break;
894 case DP_INT_DS:
895 s->core_registers[DP_INT_MASK] |= value;
896 xlnx_dp_update_irq(s);
897 break;
898 default:
899 assert(offset <= (0x504C >> 2));
900 s->core_registers[offset] = value;
901 break;
902 }
903 }
904
905 static const MemoryRegionOps dp_ops = {
906 .read = xlnx_dp_read,
907 .write = xlnx_dp_write,
908 .endianness = DEVICE_NATIVE_ENDIAN,
909 .valid = {
910 .min_access_size = 4,
911 .max_access_size = 4,
912 },
913 .impl = {
914 .min_access_size = 4,
915 .max_access_size = 4,
916 },
917 };
918
919 /*
920 * This is to handle Read/Write to the Video Blender.
921 */
xlnx_dp_vblend_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)922 static void xlnx_dp_vblend_write(void *opaque, hwaddr offset,
923 uint64_t value, unsigned size)
924 {
925 XlnxDPState *s = XLNX_DP(opaque);
926 bool alpha_was_enabled;
927
928 DPRINTF("vblend: write @0x%" HWADDR_PRIX " = 0x%" PRIX32 "\n", offset,
929 (uint32_t)value);
930 offset = offset >> 2;
931
932 switch (offset) {
933 case V_BLEND_BG_CLR_0:
934 case V_BLEND_BG_CLR_1:
935 case V_BLEND_BG_CLR_2:
936 s->vblend_registers[offset] = value & 0x00000FFF;
937 break;
938 case V_BLEND_SET_GLOBAL_ALPHA_REG:
939 /*
940 * A write to this register can enable or disable blending. Thus we need
941 * to recreate the surfaces.
942 */
943 alpha_was_enabled = xlnx_dp_global_alpha_enabled(s);
944 s->vblend_registers[offset] = value & 0x000001FF;
945 if (xlnx_dp_global_alpha_enabled(s) != alpha_was_enabled) {
946 xlnx_dp_recreate_surface(s);
947 }
948 break;
949 case V_BLEND_OUTPUT_VID_FORMAT:
950 s->vblend_registers[offset] = value & 0x00000017;
951 break;
952 case V_BLEND_LAYER0_CONTROL:
953 case V_BLEND_LAYER1_CONTROL:
954 s->vblend_registers[offset] = value & 0x00000103;
955 break;
956 case V_BLEND_RGB2YCBCR_COEFF(0):
957 case V_BLEND_RGB2YCBCR_COEFF(1):
958 case V_BLEND_RGB2YCBCR_COEFF(2):
959 case V_BLEND_RGB2YCBCR_COEFF(3):
960 case V_BLEND_RGB2YCBCR_COEFF(4):
961 case V_BLEND_RGB2YCBCR_COEFF(5):
962 case V_BLEND_RGB2YCBCR_COEFF(6):
963 case V_BLEND_RGB2YCBCR_COEFF(7):
964 case V_BLEND_RGB2YCBCR_COEFF(8):
965 case V_BLEND_IN1CSC_COEFF(0):
966 case V_BLEND_IN1CSC_COEFF(1):
967 case V_BLEND_IN1CSC_COEFF(2):
968 case V_BLEND_IN1CSC_COEFF(3):
969 case V_BLEND_IN1CSC_COEFF(4):
970 case V_BLEND_IN1CSC_COEFF(5):
971 case V_BLEND_IN1CSC_COEFF(6):
972 case V_BLEND_IN1CSC_COEFF(7):
973 case V_BLEND_IN1CSC_COEFF(8):
974 case V_BLEND_IN2CSC_COEFF(0):
975 case V_BLEND_IN2CSC_COEFF(1):
976 case V_BLEND_IN2CSC_COEFF(2):
977 case V_BLEND_IN2CSC_COEFF(3):
978 case V_BLEND_IN2CSC_COEFF(4):
979 case V_BLEND_IN2CSC_COEFF(5):
980 case V_BLEND_IN2CSC_COEFF(6):
981 case V_BLEND_IN2CSC_COEFF(7):
982 case V_BLEND_IN2CSC_COEFF(8):
983 s->vblend_registers[offset] = value & 0x0000FFFF;
984 break;
985 case V_BLEND_LUMA_IN1CSC_OFFSET:
986 case V_BLEND_CR_IN1CSC_OFFSET:
987 case V_BLEND_CB_IN1CSC_OFFSET:
988 case V_BLEND_LUMA_IN2CSC_OFFSET:
989 case V_BLEND_CR_IN2CSC_OFFSET:
990 case V_BLEND_CB_IN2CSC_OFFSET:
991 case V_BLEND_LUMA_OUTCSC_OFFSET:
992 case V_BLEND_CR_OUTCSC_OFFSET:
993 case V_BLEND_CB_OUTCSC_OFFSET:
994 s->vblend_registers[offset] = value & 0x3FFF7FFF;
995 break;
996 case V_BLEND_CHROMA_KEY_ENABLE:
997 s->vblend_registers[offset] = value & 0x00000003;
998 break;
999 case V_BLEND_CHROMA_KEY_COMP1:
1000 case V_BLEND_CHROMA_KEY_COMP2:
1001 case V_BLEND_CHROMA_KEY_COMP3:
1002 s->vblend_registers[offset] = value & 0x0FFF0FFF;
1003 break;
1004 default:
1005 s->vblend_registers[offset] = value;
1006 break;
1007 }
1008 }
1009
xlnx_dp_vblend_read(void * opaque,hwaddr offset,unsigned size)1010 static uint64_t xlnx_dp_vblend_read(void *opaque, hwaddr offset,
1011 unsigned size)
1012 {
1013 XlnxDPState *s = XLNX_DP(opaque);
1014
1015 DPRINTF("vblend: read @0x%" HWADDR_PRIX " = 0x%" PRIX32 "\n", offset,
1016 s->vblend_registers[offset >> 2]);
1017 return s->vblend_registers[offset >> 2];
1018 }
1019
1020 static const MemoryRegionOps vblend_ops = {
1021 .read = xlnx_dp_vblend_read,
1022 .write = xlnx_dp_vblend_write,
1023 .endianness = DEVICE_NATIVE_ENDIAN,
1024 .valid = {
1025 .min_access_size = 4,
1026 .max_access_size = 4,
1027 },
1028 .impl = {
1029 .min_access_size = 4,
1030 .max_access_size = 4,
1031 },
1032 };
1033
1034 /*
1035 * This is to handle Read/Write to the Audio Video buffer manager.
1036 */
xlnx_dp_avbufm_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)1037 static void xlnx_dp_avbufm_write(void *opaque, hwaddr offset, uint64_t value,
1038 unsigned size)
1039 {
1040 XlnxDPState *s = XLNX_DP(opaque);
1041
1042 DPRINTF("avbufm: write @0x%" HWADDR_PRIX " = 0x%" PRIX32 "\n", offset,
1043 (uint32_t)value);
1044 offset = offset >> 2;
1045
1046 switch (offset) {
1047 case AV_BUF_FORMAT:
1048 s->avbufm_registers[offset] = value & 0x00000FFF;
1049 xlnx_dp_change_graphic_fmt(s);
1050 break;
1051 case AV_CHBUF0:
1052 case AV_CHBUF1:
1053 case AV_CHBUF2:
1054 case AV_CHBUF3:
1055 case AV_CHBUF4:
1056 case AV_CHBUF5:
1057 s->avbufm_registers[offset] = value & 0x0000007F;
1058 break;
1059 case AV_BUF_OUTPUT_AUDIO_VIDEO_SELECT:
1060 s->avbufm_registers[offset] = value & 0x0000007F;
1061 break;
1062 case AV_BUF_DITHER_CONFIG:
1063 s->avbufm_registers[offset] = value & 0x000007FF;
1064 break;
1065 case AV_BUF_DITHER_CONFIG_MAX:
1066 case AV_BUF_DITHER_CONFIG_MIN:
1067 s->avbufm_registers[offset] = value & 0x00000FFF;
1068 break;
1069 case AV_BUF_PATTERN_GEN_SELECT:
1070 s->avbufm_registers[offset] = value & 0xFFFFFF03;
1071 break;
1072 case AV_BUF_AUD_VID_CLK_SOURCE:
1073 s->avbufm_registers[offset] = value & 0x00000007;
1074 break;
1075 case AV_BUF_SRST_REG:
1076 s->avbufm_registers[offset] = value & 0x00000002;
1077 break;
1078 case AV_BUF_AUDIO_CH_CONFIG:
1079 s->avbufm_registers[offset] = value & 0x00000003;
1080 break;
1081 case AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(0):
1082 case AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(1):
1083 case AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(2):
1084 case AV_BUF_VIDEO_COMP_SCALE_FACTOR(0):
1085 case AV_BUF_VIDEO_COMP_SCALE_FACTOR(1):
1086 case AV_BUF_VIDEO_COMP_SCALE_FACTOR(2):
1087 s->avbufm_registers[offset] = value & 0x0000FFFF;
1088 break;
1089 case AV_BUF_LIVE_VIDEO_COMP_SF(0):
1090 case AV_BUF_LIVE_VIDEO_COMP_SF(1):
1091 case AV_BUF_LIVE_VIDEO_COMP_SF(2):
1092 case AV_BUF_LIVE_VID_CONFIG:
1093 case AV_BUF_LIVE_GFX_COMP_SF(0):
1094 case AV_BUF_LIVE_GFX_COMP_SF(1):
1095 case AV_BUF_LIVE_GFX_COMP_SF(2):
1096 case AV_BUF_LIVE_GFX_CONFIG:
1097 case AV_BUF_NON_LIVE_LATENCY:
1098 case AV_BUF_STC_CONTROL:
1099 case AV_BUF_STC_INIT_VALUE0:
1100 case AV_BUF_STC_INIT_VALUE1:
1101 case AV_BUF_STC_ADJ:
1102 case AV_BUF_STC_VIDEO_VSYNC_TS_REG0:
1103 case AV_BUF_STC_VIDEO_VSYNC_TS_REG1:
1104 case AV_BUF_STC_EXT_VSYNC_TS_REG0:
1105 case AV_BUF_STC_EXT_VSYNC_TS_REG1:
1106 case AV_BUF_STC_CUSTOM_EVENT_TS_REG0:
1107 case AV_BUF_STC_CUSTOM_EVENT_TS_REG1:
1108 case AV_BUF_STC_CUSTOM_EVENT2_TS_REG0:
1109 case AV_BUF_STC_CUSTOM_EVENT2_TS_REG1:
1110 case AV_BUF_STC_SNAPSHOT0:
1111 case AV_BUF_STC_SNAPSHOT1:
1112 case AV_BUF_HCOUNT_VCOUNT_INT0:
1113 case AV_BUF_HCOUNT_VCOUNT_INT1:
1114 qemu_log_mask(LOG_UNIMP, "avbufm: unimplemented register 0x%04"
1115 PRIx64 "\n",
1116 offset << 2);
1117 break;
1118 default:
1119 s->avbufm_registers[offset] = value;
1120 break;
1121 }
1122 }
1123
xlnx_dp_avbufm_read(void * opaque,hwaddr offset,unsigned size)1124 static uint64_t xlnx_dp_avbufm_read(void *opaque, hwaddr offset,
1125 unsigned size)
1126 {
1127 XlnxDPState *s = XLNX_DP(opaque);
1128
1129 offset = offset >> 2;
1130 return s->avbufm_registers[offset];
1131 }
1132
1133 static const MemoryRegionOps avbufm_ops = {
1134 .read = xlnx_dp_avbufm_read,
1135 .write = xlnx_dp_avbufm_write,
1136 .endianness = DEVICE_NATIVE_ENDIAN,
1137 .valid = {
1138 .min_access_size = 4,
1139 .max_access_size = 4,
1140 },
1141 .impl = {
1142 .min_access_size = 4,
1143 .max_access_size = 4,
1144 },
1145 };
1146
1147 /*
1148 * This is a global alpha blending using pixman.
1149 * Both graphic and video planes are multiplied with the global alpha
1150 * coefficient and added.
1151 */
xlnx_dp_blend_surface(XlnxDPState * s)1152 static inline void xlnx_dp_blend_surface(XlnxDPState *s)
1153 {
1154 pixman_fixed_t alpha1[] = { pixman_double_to_fixed(1),
1155 pixman_double_to_fixed(1),
1156 pixman_double_to_fixed(1.0) };
1157 pixman_fixed_t alpha2[] = { pixman_double_to_fixed(1),
1158 pixman_double_to_fixed(1),
1159 pixman_double_to_fixed(1.0) };
1160
1161 if ((surface_width(s->g_plane.surface)
1162 != surface_width(s->v_plane.surface)) ||
1163 (surface_height(s->g_plane.surface)
1164 != surface_height(s->v_plane.surface))) {
1165 return;
1166 }
1167
1168 alpha1[2] = pixman_double_to_fixed((double)(xlnx_dp_global_alpha_value(s))
1169 / 256.0);
1170 alpha2[2] = pixman_double_to_fixed((255.0
1171 - (double)xlnx_dp_global_alpha_value(s))
1172 / 256.0);
1173
1174 pixman_image_set_filter(s->g_plane.surface->image,
1175 PIXMAN_FILTER_CONVOLUTION, alpha1, 3);
1176 pixman_image_composite(PIXMAN_OP_SRC, s->g_plane.surface->image, 0,
1177 s->bout_plane.surface->image, 0, 0, 0, 0, 0, 0,
1178 surface_width(s->g_plane.surface),
1179 surface_height(s->g_plane.surface));
1180 pixman_image_set_filter(s->v_plane.surface->image,
1181 PIXMAN_FILTER_CONVOLUTION, alpha2, 3);
1182 pixman_image_composite(PIXMAN_OP_ADD, s->v_plane.surface->image, 0,
1183 s->bout_plane.surface->image, 0, 0, 0, 0, 0, 0,
1184 surface_width(s->g_plane.surface),
1185 surface_height(s->g_plane.surface));
1186 }
1187
xlnx_dp_update_display(void * opaque)1188 static void xlnx_dp_update_display(void *opaque)
1189 {
1190 XlnxDPState *s = XLNX_DP(opaque);
1191
1192 if ((s->core_registers[DP_TRANSMITTER_ENABLE] & 0x01) == 0) {
1193 return;
1194 }
1195
1196 xlnx_dpdma_trigger_vsync_irq(s->dpdma);
1197
1198 /*
1199 * Trigger the DMA channel.
1200 */
1201 if (!xlnx_dpdma_start_operation(s->dpdma, 3, false)) {
1202 /*
1203 * An error occurred don't do anything with the data..
1204 * Trigger an underflow interrupt.
1205 */
1206 s->core_registers[DP_INT_STATUS] |= (1 << 21);
1207 xlnx_dp_update_irq(s);
1208 return;
1209 }
1210
1211 if (xlnx_dp_global_alpha_enabled(s)) {
1212 if (!xlnx_dpdma_start_operation(s->dpdma, 0, false)) {
1213 s->core_registers[DP_INT_STATUS] |= (1 << 21);
1214 xlnx_dp_update_irq(s);
1215 return;
1216 }
1217 xlnx_dp_blend_surface(s);
1218 }
1219
1220 /*
1221 * XXX: We might want to update only what changed.
1222 */
1223 dpy_gfx_update_full(s->console);
1224 }
1225
1226 static const GraphicHwOps xlnx_dp_gfx_ops = {
1227 .gfx_update = xlnx_dp_update_display,
1228 };
1229
xlnx_dp_init(Object * obj)1230 static void xlnx_dp_init(Object *obj)
1231 {
1232 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
1233 XlnxDPState *s = XLNX_DP(obj);
1234
1235 memory_region_init(&s->container, obj, TYPE_XLNX_DP, DP_CONTAINER_SIZE);
1236
1237 memory_region_init_io(&s->core_iomem, obj, &dp_ops, s, TYPE_XLNX_DP
1238 ".core", sizeof(s->core_registers));
1239 memory_region_add_subregion(&s->container, DP_CORE_REG_OFFSET,
1240 &s->core_iomem);
1241
1242 memory_region_init_io(&s->vblend_iomem, obj, &vblend_ops, s, TYPE_XLNX_DP
1243 ".v_blend", sizeof(s->vblend_registers));
1244 memory_region_add_subregion(&s->container, DP_VBLEND_REG_OFFSET,
1245 &s->vblend_iomem);
1246
1247 memory_region_init_io(&s->avbufm_iomem, obj, &avbufm_ops, s, TYPE_XLNX_DP
1248 ".av_buffer_manager", sizeof(s->avbufm_registers));
1249 memory_region_add_subregion(&s->container, DP_AVBUF_REG_OFFSET,
1250 &s->avbufm_iomem);
1251
1252 memory_region_init_io(&s->audio_iomem, obj, &audio_ops, s, TYPE_XLNX_DP
1253 ".audio", sizeof(s->audio_registers));
1254 memory_region_add_subregion(&s->container, 0xC000, &s->audio_iomem);
1255
1256 sysbus_init_mmio(sbd, &s->container);
1257 sysbus_init_irq(sbd, &s->irq);
1258
1259 object_property_add_link(obj, "dpdma", TYPE_XLNX_DPDMA,
1260 (Object **) &s->dpdma,
1261 xlnx_dp_set_dpdma,
1262 OBJ_PROP_LINK_STRONG);
1263
1264 /*
1265 * Initialize AUX Bus.
1266 */
1267 s->aux_bus = aux_bus_init(DEVICE(obj), "aux");
1268
1269 /*
1270 * Initialize DPCD and EDID..
1271 */
1272 s->dpcd = DPCD(qdev_new("dpcd"));
1273 object_property_add_child(OBJECT(s), "dpcd", OBJECT(s->dpcd));
1274
1275 s->edid = I2CDDC(qdev_new("i2c-ddc"));
1276 i2c_slave_set_address(I2C_SLAVE(s->edid), 0x50);
1277 object_property_add_child(OBJECT(s), "edid", OBJECT(s->edid));
1278
1279 fifo8_create(&s->rx_fifo, 16);
1280 fifo8_create(&s->tx_fifo, 16);
1281 }
1282
xlnx_dp_finalize(Object * obj)1283 static void xlnx_dp_finalize(Object *obj)
1284 {
1285 XlnxDPState *s = XLNX_DP(obj);
1286
1287 fifo8_destroy(&s->tx_fifo);
1288 fifo8_destroy(&s->rx_fifo);
1289 }
1290
vblank_hit(void * opaque)1291 static void vblank_hit(void *opaque)
1292 {
1293 XlnxDPState *s = XLNX_DP(opaque);
1294
1295 s->core_registers[DP_INT_STATUS] |= DP_INT_VBLNK_START;
1296 xlnx_dp_update_irq(s);
1297 }
1298
xlnx_dp_realize(DeviceState * dev,Error ** errp)1299 static void xlnx_dp_realize(DeviceState *dev, Error **errp)
1300 {
1301 XlnxDPState *s = XLNX_DP(dev);
1302 DisplaySurface *surface;
1303 struct audsettings as;
1304
1305 if (!AUD_register_card("xlnx_dp.audio", &s->aud_card, errp)) {
1306 return;
1307 }
1308
1309 aux_bus_realize(s->aux_bus);
1310
1311 qdev_realize(DEVICE(s->dpcd), BUS(s->aux_bus), &error_fatal);
1312 aux_map_slave(AUX_SLAVE(s->dpcd), 0x0000);
1313
1314 qdev_realize_and_unref(DEVICE(s->edid), BUS(aux_get_i2c_bus(s->aux_bus)),
1315 &error_fatal);
1316
1317 s->console = graphic_console_init(dev, 0, &xlnx_dp_gfx_ops, s);
1318 surface = qemu_console_surface(s->console);
1319 xlnx_dpdma_set_host_data_location(s->dpdma, DP_GRAPHIC_DMA_CHANNEL,
1320 surface_data(surface));
1321
1322 as.freq = 44100;
1323 as.nchannels = 2;
1324 as.fmt = AUDIO_FORMAT_S16;
1325 as.endianness = 0;
1326
1327 s->amixer_output_stream = AUD_open_out(&s->aud_card,
1328 s->amixer_output_stream,
1329 "xlnx_dp.audio.out",
1330 s,
1331 xlnx_dp_audio_callback,
1332 &as);
1333 AUD_set_volume_out(s->amixer_output_stream, 0, 255, 255);
1334 xlnx_dp_audio_activate(s);
1335 s->vblank = ptimer_init(vblank_hit, s, DP_VBLANK_PTIMER_POLICY);
1336 ptimer_transaction_begin(s->vblank);
1337 ptimer_set_freq(s->vblank, 30);
1338 ptimer_transaction_commit(s->vblank);
1339 }
1340
xlnx_dp_reset(DeviceState * dev)1341 static void xlnx_dp_reset(DeviceState *dev)
1342 {
1343 XlnxDPState *s = XLNX_DP(dev);
1344
1345 memset(s->core_registers, 0, sizeof(s->core_registers));
1346 s->core_registers[DP_VERSION_REGISTER] = 0x04010000;
1347 s->core_registers[DP_CORE_ID] = 0x01020000;
1348 s->core_registers[DP_REPLY_STATUS] = 0x00000010;
1349 s->core_registers[DP_MSA_TRANSFER_UNIT_SIZE] = 0x00000040;
1350 s->core_registers[DP_INIT_WAIT] = 0x00000020;
1351 s->core_registers[DP_PHY_RESET] = 0x00010003;
1352 s->core_registers[DP_INT_MASK] = 0xFFFFF03F;
1353 s->core_registers[DP_PHY_STATUS] = 0x00000043;
1354 s->core_registers[DP_INTERRUPT_SIGNAL_STATE] = 0x00000001;
1355
1356 s->vblend_registers[V_BLEND_RGB2YCBCR_COEFF(0)] = 0x00001000;
1357 s->vblend_registers[V_BLEND_RGB2YCBCR_COEFF(4)] = 0x00001000;
1358 s->vblend_registers[V_BLEND_RGB2YCBCR_COEFF(8)] = 0x00001000;
1359 s->vblend_registers[V_BLEND_IN1CSC_COEFF(0)] = 0x00001000;
1360 s->vblend_registers[V_BLEND_IN1CSC_COEFF(4)] = 0x00001000;
1361 s->vblend_registers[V_BLEND_IN1CSC_COEFF(8)] = 0x00001000;
1362 s->vblend_registers[V_BLEND_IN2CSC_COEFF(0)] = 0x00001000;
1363 s->vblend_registers[V_BLEND_IN2CSC_COEFF(4)] = 0x00001000;
1364 s->vblend_registers[V_BLEND_IN2CSC_COEFF(8)] = 0x00001000;
1365
1366 s->avbufm_registers[AV_BUF_NON_LIVE_LATENCY] = 0x00000180;
1367 s->avbufm_registers[AV_BUF_OUTPUT_AUDIO_VIDEO_SELECT] = 0x00000008;
1368 s->avbufm_registers[AV_BUF_DITHER_CONFIG_MAX] = 0x00000FFF;
1369 s->avbufm_registers[AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(0)] = 0x00010101;
1370 s->avbufm_registers[AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(1)] = 0x00010101;
1371 s->avbufm_registers[AV_BUF_GRAPHICS_COMP_SCALE_FACTOR(2)] = 0x00010101;
1372 s->avbufm_registers[AV_BUF_VIDEO_COMP_SCALE_FACTOR(0)] = 0x00010101;
1373 s->avbufm_registers[AV_BUF_VIDEO_COMP_SCALE_FACTOR(1)] = 0x00010101;
1374 s->avbufm_registers[AV_BUF_VIDEO_COMP_SCALE_FACTOR(2)] = 0x00010101;
1375 s->avbufm_registers[AV_BUF_LIVE_VIDEO_COMP_SF(0)] = 0x00010101;
1376 s->avbufm_registers[AV_BUF_LIVE_VIDEO_COMP_SF(1)] = 0x00010101;
1377 s->avbufm_registers[AV_BUF_LIVE_VIDEO_COMP_SF(2)] = 0x00010101;
1378 s->avbufm_registers[AV_BUF_LIVE_GFX_COMP_SF(0)] = 0x00010101;
1379 s->avbufm_registers[AV_BUF_LIVE_GFX_COMP_SF(1)] = 0x00010101;
1380 s->avbufm_registers[AV_BUF_LIVE_GFX_COMP_SF(2)] = 0x00010101;
1381
1382 memset(s->audio_registers, 0, sizeof(s->audio_registers));
1383 s->byte_left = 0;
1384
1385 xlnx_dp_aux_clear_rx_fifo(s);
1386 xlnx_dp_change_graphic_fmt(s);
1387 xlnx_dp_update_irq(s);
1388 }
1389
1390 static Property xlnx_dp_device_properties[] = {
1391 DEFINE_AUDIO_PROPERTIES(XlnxDPState, aud_card),
1392 DEFINE_PROP_END_OF_LIST(),
1393 };
1394
xlnx_dp_class_init(ObjectClass * oc,void * data)1395 static void xlnx_dp_class_init(ObjectClass *oc, void *data)
1396 {
1397 DeviceClass *dc = DEVICE_CLASS(oc);
1398
1399 dc->realize = xlnx_dp_realize;
1400 dc->vmsd = &vmstate_dp;
1401 device_class_set_legacy_reset(dc, xlnx_dp_reset);
1402 device_class_set_props(dc, xlnx_dp_device_properties);
1403 }
1404
1405 static const TypeInfo xlnx_dp_info = {
1406 .name = TYPE_XLNX_DP,
1407 .parent = TYPE_SYS_BUS_DEVICE,
1408 .instance_size = sizeof(XlnxDPState),
1409 .instance_init = xlnx_dp_init,
1410 .instance_finalize = xlnx_dp_finalize,
1411 .class_init = xlnx_dp_class_init,
1412 };
1413
xlnx_dp_register_types(void)1414 static void xlnx_dp_register_types(void)
1415 {
1416 type_register_static(&xlnx_dp_info);
1417 }
1418
1419 type_init(xlnx_dp_register_types)
1420