File: ivtv-firmware.c

package info (click to toggle)
linux 3.16.56-1+deb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 739,780 kB
  • sloc: ansic: 12,238,760; asm: 277,795; perl: 53,071; xml: 47,771; makefile: 30,548; sh: 7,977; python: 6,699; cpp: 5,132; yacc: 4,254; lex: 2,215; awk: 741; pascal: 231; lisp: 218; sed: 30
file content (400 lines) | stat: -rw-r--r-- 11,874 bytes parent folder | download | duplicates (14)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
/*
    ivtv firmware functions.
    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
    Copyright (C) 2004  Chris Kennedy <c@groovy.org>
    Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "ivtv-driver.h"
#include "ivtv-mailbox.h"
#include "ivtv-firmware.h"
#include "ivtv-yuv.h"
#include "ivtv-ioctl.h"
#include "ivtv-cards.h"
#include <linux/firmware.h>
#include <media/saa7127.h>

#define IVTV_MASK_SPU_ENABLE 		0xFFFFFFFE
#define IVTV_MASK_VPU_ENABLE15 		0xFFFFFFF6
#define IVTV_MASK_VPU_ENABLE16 		0xFFFFFFFB
#define IVTV_CMD_VDM_STOP 		0x00000000
#define IVTV_CMD_AO_STOP 		0x00000005
#define IVTV_CMD_APU_PING 		0x00000000
#define IVTV_CMD_VPU_STOP15 		0xFFFFFFFE
#define IVTV_CMD_VPU_STOP16 		0xFFFFFFEE
#define IVTV_CMD_HW_BLOCKS_RST 		0xFFFFFFFF
#define IVTV_CMD_SPU_STOP 		0x00000001
#define IVTV_CMD_SDRAM_PRECHARGE_INIT 	0x0000001A
#define IVTV_CMD_SDRAM_REFRESH_INIT 	0x80000640
#define IVTV_SDRAM_SLEEPTIME 		600

#define IVTV_DECODE_INIT_MPEG_FILENAME 	"v4l-cx2341x-init.mpg"
#define IVTV_DECODE_INIT_MPEG_SIZE 	(152*1024)

/* Encoder/decoder firmware sizes */
#define IVTV_FW_ENC_SIZE 		(376836)
#define IVTV_FW_DEC_SIZE 		(256*1024)

static int load_fw_direct(const char *fn, volatile u8 __iomem *mem, struct ivtv *itv, long size)
{
	const struct firmware *fw = NULL;
	int retries = 3;

retry:
	if (retries && request_firmware(&fw, fn, &itv->pdev->dev) == 0) {
		int i;
		volatile u32 __iomem *dst = (volatile u32 __iomem *)mem;
		const u32 *src = (const u32 *)fw->data;

		if (fw->size != size) {
			/* Due to race conditions in firmware loading (esp. with udev <0.95)
			   the wrong file was sometimes loaded. So we check filesizes to
			   see if at least the right-sized file was loaded. If not, then we
			   retry. */
			IVTV_INFO("Retry: file loaded was not %s (expected size %ld, got %zd)\n", fn, size, fw->size);
			release_firmware(fw);
			retries--;
			goto retry;
		}
		for (i = 0; i < fw->size; i += 4) {
			/* no need for endianness conversion on the ppc */
			__raw_writel(*src, dst);
			dst++;
			src++;
		}
		IVTV_INFO("Loaded %s firmware (%zd bytes)\n", fn, fw->size);
		release_firmware(fw);
		return size;
	}
	return -ENOMEM;
}

void ivtv_halt_firmware(struct ivtv *itv)
{
	IVTV_DEBUG_INFO("Preparing for firmware halt.\n");
	if (itv->has_cx23415 && itv->dec_mbox.mbox)
		ivtv_vapi(itv, CX2341X_DEC_HALT_FW, 0);
	if (itv->enc_mbox.mbox)
		ivtv_vapi(itv, CX2341X_ENC_HALT_FW, 0);

	ivtv_msleep_timeout(10, 0);
	itv->enc_mbox.mbox = itv->dec_mbox.mbox = NULL;

	IVTV_DEBUG_INFO("Stopping VDM\n");
	write_reg(IVTV_CMD_VDM_STOP, IVTV_REG_VDM);

	IVTV_DEBUG_INFO("Stopping AO\n");
	write_reg(IVTV_CMD_AO_STOP, IVTV_REG_AO);

	IVTV_DEBUG_INFO("pinging (?) APU\n");
	write_reg(IVTV_CMD_APU_PING, IVTV_REG_APU);

	IVTV_DEBUG_INFO("Stopping VPU\n");
	if (!itv->has_cx23415)
		write_reg(IVTV_CMD_VPU_STOP16, IVTV_REG_VPU);
	else
		write_reg(IVTV_CMD_VPU_STOP15, IVTV_REG_VPU);

	IVTV_DEBUG_INFO("Resetting Hw Blocks\n");
	write_reg(IVTV_CMD_HW_BLOCKS_RST, IVTV_REG_HW_BLOCKS);

	IVTV_DEBUG_INFO("Stopping SPU\n");
	write_reg(IVTV_CMD_SPU_STOP, IVTV_REG_SPU);

	ivtv_msleep_timeout(10, 0);

	IVTV_DEBUG_INFO("init Encoder SDRAM pre-charge\n");
	write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_ENC_SDRAM_PRECHARGE);

	IVTV_DEBUG_INFO("init Encoder SDRAM refresh to 1us\n");
	write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_ENC_SDRAM_REFRESH);

	if (itv->has_cx23415) {
		IVTV_DEBUG_INFO("init Decoder SDRAM pre-charge\n");
		write_reg(IVTV_CMD_SDRAM_PRECHARGE_INIT, IVTV_REG_DEC_SDRAM_PRECHARGE);

		IVTV_DEBUG_INFO("init Decoder SDRAM refresh to 1us\n");
		write_reg(IVTV_CMD_SDRAM_REFRESH_INIT, IVTV_REG_DEC_SDRAM_REFRESH);
	}

	IVTV_DEBUG_INFO("Sleeping for %dms\n", IVTV_SDRAM_SLEEPTIME);
	ivtv_msleep_timeout(IVTV_SDRAM_SLEEPTIME, 0);
}

void ivtv_firmware_versions(struct ivtv *itv)
{
	u32 data[CX2341X_MBOX_MAX_DATA];

	/* Encoder */
	ivtv_vapi_result(itv, data, CX2341X_ENC_GET_VERSION, 0);
	IVTV_INFO("Encoder revision: 0x%08x\n", data[0]);

	if (data[0] != 0x02060039)
		IVTV_WARN("Recommended firmware version is 0x02060039.\n");

	if (itv->has_cx23415) {
		/* Decoder */
		ivtv_vapi_result(itv, data, CX2341X_DEC_GET_VERSION, 0);
		IVTV_INFO("Decoder revision: 0x%08x\n", data[0]);
	}
}

static int ivtv_firmware_copy(struct ivtv *itv)
{
	IVTV_DEBUG_INFO("Loading encoder image\n");
	if (load_fw_direct(CX2341X_FIRM_ENC_FILENAME,
		   itv->enc_mem, itv, IVTV_FW_ENC_SIZE) != IVTV_FW_ENC_SIZE) {
		IVTV_DEBUG_WARN("failed loading encoder firmware\n");
		return -3;
	}
	if (!itv->has_cx23415)
		return 0;

	IVTV_DEBUG_INFO("Loading decoder image\n");
	if (load_fw_direct(CX2341X_FIRM_DEC_FILENAME,
		   itv->dec_mem, itv, IVTV_FW_DEC_SIZE) != IVTV_FW_DEC_SIZE) {
		IVTV_DEBUG_WARN("failed loading decoder firmware\n");
		return -1;
	}
	return 0;
}

static volatile struct ivtv_mailbox __iomem *ivtv_search_mailbox(const volatile u8 __iomem *mem, u32 size)
{
	int i;

	/* mailbox is preceded by a 16 byte 'magic cookie' starting at a 256-byte
	   address boundary */
	for (i = 0; i < size; i += 0x100) {
		if (readl(mem + i)      == 0x12345678 &&
		    readl(mem + i + 4)  == 0x34567812 &&
		    readl(mem + i + 8)  == 0x56781234 &&
		    readl(mem + i + 12) == 0x78123456) {
			return (volatile struct ivtv_mailbox __iomem *)(mem + i + 16);
		}
	}
	return NULL;
}

int ivtv_firmware_init(struct ivtv *itv)
{
	int err;

	ivtv_halt_firmware(itv);

	/* load firmware */
	err = ivtv_firmware_copy(itv);
	if (err) {
		IVTV_DEBUG_WARN("Error %d loading firmware\n", err);
		return err;
	}

	/* start firmware */
	write_reg(read_reg(IVTV_REG_SPU) & IVTV_MASK_SPU_ENABLE, IVTV_REG_SPU);
	ivtv_msleep_timeout(100, 0);
	if (itv->has_cx23415)
		write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE15, IVTV_REG_VPU);
	else
		write_reg(read_reg(IVTV_REG_VPU) & IVTV_MASK_VPU_ENABLE16, IVTV_REG_VPU);
	ivtv_msleep_timeout(100, 0);

	/* find mailboxes and ping firmware */
	itv->enc_mbox.mbox = ivtv_search_mailbox(itv->enc_mem, IVTV_ENCODER_SIZE);
	if (itv->enc_mbox.mbox == NULL)
		IVTV_ERR("Encoder mailbox not found\n");
	else if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0)) {
		IVTV_ERR("Encoder firmware dead!\n");
		itv->enc_mbox.mbox = NULL;
	}
	if (itv->enc_mbox.mbox == NULL)
		return -ENODEV;

	if (!itv->has_cx23415)
		return 0;

	itv->dec_mbox.mbox = ivtv_search_mailbox(itv->dec_mem, IVTV_DECODER_SIZE);
	if (itv->dec_mbox.mbox == NULL) {
		IVTV_ERR("Decoder mailbox not found\n");
	} else if (itv->has_cx23415 && ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0)) {
		IVTV_ERR("Decoder firmware dead!\n");
		itv->dec_mbox.mbox = NULL;
	} else {
		/* Firmware okay, so check yuv output filter table */
		ivtv_yuv_filter_check(itv);
	}
	return itv->dec_mbox.mbox ? 0 : -ENODEV;
}

void ivtv_init_mpeg_decoder(struct ivtv *itv)
{
	u32 data[CX2341X_MBOX_MAX_DATA];
	long readbytes;
	volatile u8 __iomem *mem_offset;

	data[0] = 0;
	data[1] = itv->cxhdl.width;	/* YUV source width */
	data[2] = itv->cxhdl.height;
	data[3] = itv->cxhdl.audio_properties;	/* Audio settings to use,
							   bitmap. see docs. */
	if (ivtv_api(itv, CX2341X_DEC_SET_DECODER_SOURCE, 4, data)) {
		IVTV_ERR("ivtv_init_mpeg_decoder failed to set decoder source\n");
		return;
	}

	if (ivtv_vapi(itv, CX2341X_DEC_START_PLAYBACK, 2, 0, 1) != 0) {
		IVTV_ERR("ivtv_init_mpeg_decoder failed to start playback\n");
		return;
	}
	ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, 2, data);
	mem_offset = itv->dec_mem + data[1];

	if ((readbytes = load_fw_direct(IVTV_DECODE_INIT_MPEG_FILENAME,
		mem_offset, itv, IVTV_DECODE_INIT_MPEG_SIZE)) <= 0) {
		IVTV_DEBUG_WARN("failed to read mpeg decoder initialisation file %s\n",
				IVTV_DECODE_INIT_MPEG_FILENAME);
	} else {
		ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, readbytes, 0);
		ivtv_msleep_timeout(100, 0);
	}
	ivtv_vapi(itv, CX2341X_DEC_STOP_PLAYBACK, 4, 0, 0, 0, 1);
}

/* Try to restart the card & restore previous settings */
static int ivtv_firmware_restart(struct ivtv *itv)
{
	int rc = 0;
	v4l2_std_id std;

	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
		/* Display test image during restart */
		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
		    SAA7127_INPUT_TYPE_TEST_IMAGE,
		    itv->card->video_outputs[itv->active_output].video_output,
		    0);

	mutex_lock(&itv->udma.lock);

	rc = ivtv_firmware_init(itv);
	if (rc) {
		mutex_unlock(&itv->udma.lock);
		return rc;
	}

	/* Allow settings to reload */
	ivtv_mailbox_cache_invalidate(itv);

	/* Restore encoder video standard */
	std = itv->std;
	itv->std = 0;
	ivtv_s_std_enc(itv, std);

	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
		ivtv_init_mpeg_decoder(itv);

		/* Restore decoder video standard */
		std = itv->std_out;
		itv->std_out = 0;
		ivtv_s_std_dec(itv, std);

		/* Restore framebuffer if active */
		if (itv->ivtvfb_restore)
			itv->ivtvfb_restore(itv);

		/* Restore alpha settings */
		ivtv_set_osd_alpha(itv);

		/* Restore normal output */
		ivtv_call_hw(itv, IVTV_HW_SAA7127, video, s_routing,
		    SAA7127_INPUT_TYPE_NORMAL,
		    itv->card->video_outputs[itv->active_output].video_output,
		    0);
	}

	mutex_unlock(&itv->udma.lock);
	return rc;
}

/* Check firmware running state. The checks fall through
   allowing multiple failures to be logged. */
int ivtv_firmware_check(struct ivtv *itv, char *where)
{
	int res = 0;

	/* Check encoder is still running */
	if (ivtv_vapi(itv, CX2341X_ENC_PING_FW, 0) < 0) {
		IVTV_WARN("Encoder has died : %s\n", where);
		res = -1;
	}

	/* Also check audio. Only check if not in use & encoder is okay */
	if (!res && !atomic_read(&itv->capturing) &&
	    (!atomic_read(&itv->decoding) ||
	     (atomic_read(&itv->decoding) < 2 && test_bit(IVTV_F_I_DEC_YUV,
							     &itv->i_flags)))) {

		if (ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12) < 0) {
			IVTV_WARN("Audio has died (Encoder OK) : %s\n", where);
			res = -2;
		}
	}

	if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
		/* Second audio check. Skip if audio already failed */
		if (res != -2 && read_dec(0x100) != read_dec(0x104)) {
			/* Wait & try again to be certain. */
			ivtv_msleep_timeout(14, 0);
			if (read_dec(0x100) != read_dec(0x104)) {
				IVTV_WARN("Audio has died (Decoder) : %s\n",
					  where);
				res = -1;
			}
		}

		/* Check decoder is still running */
		if (ivtv_vapi(itv, CX2341X_DEC_PING_FW, 0) < 0) {
			IVTV_WARN("Decoder has died : %s\n", where);
			res = -1;
		}
	}

	/* If something failed & currently idle, try to reload */
	if (res && !atomic_read(&itv->capturing) &&
						!atomic_read(&itv->decoding)) {
		IVTV_INFO("Detected in %s that firmware had failed - "
			  "Reloading\n", where);
		res = ivtv_firmware_restart(itv);
		/*
		 * Even if restarted ok, still signal a problem had occurred.
		 * The caller can come through this function again to check
		 * if things are really ok after the restart.
		 */
		if (!res) {
			IVTV_INFO("Firmware restart okay\n");
			res = -EAGAIN;
		} else {
			IVTV_INFO("Firmware restart failed\n");
		}
	} else if (res) {
		res = -EIO;
	}

	return res;
}

MODULE_FIRMWARE(CX2341X_FIRM_ENC_FILENAME);
MODULE_FIRMWARE(CX2341X_FIRM_DEC_FILENAME);
MODULE_FIRMWARE(IVTV_DECODE_INIT_MPEG_FILENAME);