Commit | Line | Data |
---|---|---|
1a0adaf3 HV |
1 | /* interrupt handling |
2 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | |
3 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> | |
4 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | ||
21 | #include "ivtv-driver.h" | |
1a0adaf3 HV |
22 | #include "ivtv-queue.h" |
23 | #include "ivtv-udma.h" | |
24 | #include "ivtv-irq.h" | |
1a0adaf3 HV |
25 | #include "ivtv-mailbox.h" |
26 | #include "ivtv-vbi.h" | |
1e13f9e3 | 27 | #include "ivtv-yuv.h" |
09250193 | 28 | #include <media/v4l2-event.h> |
1a0adaf3 HV |
29 | |
30 | #define DMA_MAGIC_COOKIE 0x000001fe | |
31 | ||
1a0adaf3 HV |
32 | static void ivtv_dma_dec_start(struct ivtv_stream *s); |
33 | ||
34 | static const int ivtv_stream_map[] = { | |
35 | IVTV_ENC_STREAM_TYPE_MPG, | |
36 | IVTV_ENC_STREAM_TYPE_YUV, | |
37 | IVTV_ENC_STREAM_TYPE_PCM, | |
38 | IVTV_ENC_STREAM_TYPE_VBI, | |
39 | }; | |
40 | ||
dc02d50a HV |
41 | |
42 | static void ivtv_pio_work_handler(struct ivtv *itv) | |
1a0adaf3 | 43 | { |
dc02d50a HV |
44 | struct ivtv_stream *s = &itv->streams[itv->cur_pio_stream]; |
45 | struct ivtv_buffer *buf; | |
dc02d50a HV |
46 | int i = 0; |
47 | ||
bd58df6d | 48 | IVTV_DEBUG_HI_DMA("ivtv_pio_work_handler\n"); |
dc02d50a | 49 | if (itv->cur_pio_stream < 0 || itv->cur_pio_stream >= IVTV_MAX_STREAMS || |
8ac05ae3 | 50 | s->vdev == NULL || !ivtv_use_pio(s)) { |
dc02d50a HV |
51 | itv->cur_pio_stream = -1; |
52 | /* trigger PIO complete user interrupt */ | |
53 | write_reg(IVTV_IRQ_ENC_PIO_COMPLETE, 0x44); | |
54 | return; | |
55 | } | |
bd58df6d | 56 | IVTV_DEBUG_HI_DMA("Process PIO %s\n", s->name); |
805a4392 | 57 | list_for_each_entry(buf, &s->q_dma.list, list) { |
37093b1e | 58 | u32 size = s->sg_processing[i].size & 0x3ffff; |
1a0adaf3 | 59 | |
dc02d50a HV |
60 | /* Copy the data from the card to the buffer */ |
61 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
37093b1e | 62 | memcpy_fromio(buf->buf, itv->dec_mem + s->sg_processing[i].src - IVTV_DECODER_OFFSET, size); |
dc02d50a HV |
63 | } |
64 | else { | |
37093b1e | 65 | memcpy_fromio(buf->buf, itv->enc_mem + s->sg_processing[i].src, size); |
dc02d50a | 66 | } |
dc02d50a | 67 | i++; |
37093b1e HV |
68 | if (i == s->sg_processing_size) |
69 | break; | |
dc02d50a HV |
70 | } |
71 | write_reg(IVTV_IRQ_ENC_PIO_COMPLETE, 0x44); | |
1a0adaf3 HV |
72 | } |
73 | ||
7bc46560 | 74 | void ivtv_irq_work_handler(struct kthread_work *work) |
1e13f9e3 | 75 | { |
7bc46560 | 76 | struct ivtv *itv = container_of(work, struct ivtv, irq_work); |
1e13f9e3 | 77 | |
dc02d50a HV |
78 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_PIO, &itv->i_flags)) |
79 | ivtv_pio_work_handler(itv); | |
80 | ||
1e13f9e3 | 81 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_VBI, &itv->i_flags)) |
dc02d50a | 82 | ivtv_vbi_work_handler(itv); |
1e13f9e3 HV |
83 | |
84 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags)) | |
85 | ivtv_yuv_work_handler(itv); | |
86 | } | |
87 | ||
1a0adaf3 HV |
88 | /* Determine the required DMA size, setup enough buffers in the predma queue and |
89 | actually copy the data from the card to the buffers in case a PIO transfer is | |
90 | required for this stream. | |
91 | */ | |
92 | static int stream_enc_dma_append(struct ivtv_stream *s, u32 data[CX2341X_MBOX_MAX_DATA]) | |
93 | { | |
94 | struct ivtv *itv = s->itv; | |
95 | struct ivtv_buffer *buf; | |
1a0adaf3 HV |
96 | u32 bytes_needed = 0; |
97 | u32 offset, size; | |
98 | u32 UVoffset = 0, UVsize = 0; | |
99 | int skip_bufs = s->q_predma.buffers; | |
37093b1e | 100 | int idx = s->sg_pending_size; |
1a0adaf3 HV |
101 | int rc; |
102 | ||
103 | /* sanity checks */ | |
8ac05ae3 | 104 | if (s->vdev == NULL) { |
1a0adaf3 HV |
105 | IVTV_DEBUG_WARN("Stream %s not started\n", s->name); |
106 | return -1; | |
107 | } | |
108 | if (!test_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
109 | IVTV_DEBUG_WARN("Stream %s not open\n", s->name); | |
110 | return -1; | |
111 | } | |
112 | ||
113 | /* determine offset, size and PTS for the various streams */ | |
114 | switch (s->type) { | |
115 | case IVTV_ENC_STREAM_TYPE_MPG: | |
116 | offset = data[1]; | |
117 | size = data[2]; | |
37093b1e | 118 | s->pending_pts = 0; |
1a0adaf3 HV |
119 | break; |
120 | ||
121 | case IVTV_ENC_STREAM_TYPE_YUV: | |
122 | offset = data[1]; | |
123 | size = data[2]; | |
124 | UVoffset = data[3]; | |
125 | UVsize = data[4]; | |
37093b1e | 126 | s->pending_pts = ((u64) data[5] << 32) | data[6]; |
1a0adaf3 HV |
127 | break; |
128 | ||
129 | case IVTV_ENC_STREAM_TYPE_PCM: | |
130 | offset = data[1] + 12; | |
131 | size = data[2] - 12; | |
37093b1e | 132 | s->pending_pts = read_dec(offset - 8) | |
1a0adaf3 HV |
133 | ((u64)(read_dec(offset - 12)) << 32); |
134 | if (itv->has_cx23415) | |
135 | offset += IVTV_DECODER_OFFSET; | |
136 | break; | |
137 | ||
138 | case IVTV_ENC_STREAM_TYPE_VBI: | |
139 | size = itv->vbi.enc_size * itv->vbi.fpi; | |
140 | offset = read_enc(itv->vbi.enc_start - 4) + 12; | |
141 | if (offset == 12) { | |
142 | IVTV_DEBUG_INFO("VBI offset == 0\n"); | |
143 | return -1; | |
144 | } | |
37093b1e | 145 | s->pending_pts = read_enc(offset - 4) | ((u64)read_enc(offset - 8) << 32); |
1a0adaf3 HV |
146 | break; |
147 | ||
148 | case IVTV_DEC_STREAM_TYPE_VBI: | |
149 | size = read_dec(itv->vbi.dec_start + 4) + 8; | |
150 | offset = read_dec(itv->vbi.dec_start) + itv->vbi.dec_start; | |
37093b1e | 151 | s->pending_pts = 0; |
1a0adaf3 HV |
152 | offset += IVTV_DECODER_OFFSET; |
153 | break; | |
154 | default: | |
155 | /* shouldn't happen */ | |
156 | return -1; | |
157 | } | |
158 | ||
159 | /* if this is the start of the DMA then fill in the magic cookie */ | |
51a99c04 | 160 | if (s->sg_pending_size == 0 && ivtv_use_dma(s)) { |
1a0adaf3 HV |
161 | if (itv->has_cx23415 && (s->type == IVTV_ENC_STREAM_TYPE_PCM || |
162 | s->type == IVTV_DEC_STREAM_TYPE_VBI)) { | |
37093b1e | 163 | s->pending_backup = read_dec(offset - IVTV_DECODER_OFFSET); |
1a0adaf3 HV |
164 | write_dec_sync(cpu_to_le32(DMA_MAGIC_COOKIE), offset - IVTV_DECODER_OFFSET); |
165 | } | |
166 | else { | |
37093b1e | 167 | s->pending_backup = read_enc(offset); |
1a0adaf3 HV |
168 | write_enc_sync(cpu_to_le32(DMA_MAGIC_COOKIE), offset); |
169 | } | |
37093b1e | 170 | s->pending_offset = offset; |
1a0adaf3 HV |
171 | } |
172 | ||
173 | bytes_needed = size; | |
174 | if (s->type == IVTV_ENC_STREAM_TYPE_YUV) { | |
175 | /* The size for the Y samples needs to be rounded upwards to a | |
176 | multiple of the buf_size. The UV samples then start in the | |
177 | next buffer. */ | |
178 | bytes_needed = s->buf_size * ((bytes_needed + s->buf_size - 1) / s->buf_size); | |
179 | bytes_needed += UVsize; | |
180 | } | |
181 | ||
bd58df6d | 182 | IVTV_DEBUG_HI_DMA("%s %s: 0x%08x bytes at 0x%08x\n", |
1a0adaf3 HV |
183 | ivtv_use_pio(s) ? "PIO" : "DMA", s->name, bytes_needed, offset); |
184 | ||
185 | rc = ivtv_queue_move(s, &s->q_free, &s->q_full, &s->q_predma, bytes_needed); | |
186 | if (rc < 0) { /* Insufficient buffers */ | |
187 | IVTV_DEBUG_WARN("Cannot obtain %d bytes for %s data transfer\n", | |
188 | bytes_needed, s->name); | |
189 | return -1; | |
190 | } | |
ec105a42 | 191 | if (rc && !s->buffers_stolen && test_bit(IVTV_F_S_APPL_IO, &s->s_flags)) { |
1a0adaf3 HV |
192 | IVTV_WARN("All %s stream buffers are full. Dropping data.\n", s->name); |
193 | IVTV_WARN("Cause: the application is not reading fast enough.\n"); | |
194 | } | |
195 | s->buffers_stolen = rc; | |
196 | ||
37093b1e | 197 | /* got the buffers, now fill in sg_pending */ |
1a0adaf3 HV |
198 | buf = list_entry(s->q_predma.list.next, struct ivtv_buffer, list); |
199 | memset(buf->buf, 0, 128); | |
805a4392 | 200 | list_for_each_entry(buf, &s->q_predma.list, list) { |
1a0adaf3 HV |
201 | if (skip_bufs-- > 0) |
202 | continue; | |
37093b1e HV |
203 | s->sg_pending[idx].dst = buf->dma_handle; |
204 | s->sg_pending[idx].src = offset; | |
205 | s->sg_pending[idx].size = s->buf_size; | |
14d5deba | 206 | buf->bytesused = min(size, s->buf_size); |
f4071b85 | 207 | buf->dma_xfer_cnt = s->dma_xfer_cnt; |
1a0adaf3 | 208 | |
1a0adaf3 HV |
209 | s->q_predma.bytesused += buf->bytesused; |
210 | size -= buf->bytesused; | |
211 | offset += s->buf_size; | |
212 | ||
213 | /* Sync SG buffers */ | |
214 | ivtv_buf_sync_for_device(s, buf); | |
215 | ||
216 | if (size == 0) { /* YUV */ | |
217 | /* process the UV section */ | |
218 | offset = UVoffset; | |
219 | size = UVsize; | |
220 | } | |
221 | idx++; | |
222 | } | |
37093b1e | 223 | s->sg_pending_size = idx; |
1a0adaf3 HV |
224 | return 0; |
225 | } | |
226 | ||
227 | static void dma_post(struct ivtv_stream *s) | |
228 | { | |
229 | struct ivtv *itv = s->itv; | |
230 | struct ivtv_buffer *buf = NULL; | |
231 | struct list_head *p; | |
232 | u32 offset; | |
b0510f8d | 233 | __le32 *u32buf; |
1a0adaf3 HV |
234 | int x = 0; |
235 | ||
bd58df6d | 236 | IVTV_DEBUG_HI_DMA("%s %s completed (%x)\n", ivtv_use_pio(s) ? "PIO" : "DMA", |
1a0adaf3 HV |
237 | s->name, s->dma_offset); |
238 | list_for_each(p, &s->q_dma.list) { | |
239 | buf = list_entry(p, struct ivtv_buffer, list); | |
b0510f8d | 240 | u32buf = (__le32 *)buf->buf; |
1a0adaf3 HV |
241 | |
242 | /* Sync Buffer */ | |
243 | ivtv_buf_sync_for_cpu(s, buf); | |
244 | ||
51a99c04 | 245 | if (x == 0 && ivtv_use_dma(s)) { |
1a0adaf3 HV |
246 | offset = s->dma_last_offset; |
247 | if (u32buf[offset / 4] != DMA_MAGIC_COOKIE) | |
248 | { | |
249 | for (offset = 0; offset < 64; offset++) { | |
250 | if (u32buf[offset] == DMA_MAGIC_COOKIE) { | |
251 | break; | |
252 | } | |
253 | } | |
254 | offset *= 4; | |
255 | if (offset == 256) { | |
256 | IVTV_DEBUG_WARN("%s: Couldn't find start of buffer within the first 256 bytes\n", s->name); | |
257 | offset = s->dma_last_offset; | |
258 | } | |
259 | if (s->dma_last_offset != offset) | |
260 | IVTV_DEBUG_WARN("%s: offset %d -> %d\n", s->name, s->dma_last_offset, offset); | |
261 | s->dma_last_offset = offset; | |
262 | } | |
263 | if (itv->has_cx23415 && (s->type == IVTV_ENC_STREAM_TYPE_PCM || | |
264 | s->type == IVTV_DEC_STREAM_TYPE_VBI)) { | |
265 | write_dec_sync(0, s->dma_offset - IVTV_DECODER_OFFSET); | |
266 | } | |
267 | else { | |
268 | write_enc_sync(0, s->dma_offset); | |
269 | } | |
270 | if (offset) { | |
271 | buf->bytesused -= offset; | |
272 | memcpy(buf->buf, buf->buf + offset, buf->bytesused + offset); | |
273 | } | |
274 | *u32buf = cpu_to_le32(s->dma_backup); | |
275 | } | |
276 | x++; | |
277 | /* flag byteswap ABCD -> DCBA for MPG & VBI data outside irq */ | |
278 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG || | |
279 | s->type == IVTV_ENC_STREAM_TYPE_VBI) | |
f4071b85 | 280 | buf->b_flags |= IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
281 | } |
282 | if (buf) | |
283 | buf->bytesused += s->dma_last_offset; | |
284 | if (buf && s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
805a4392 | 285 | list_for_each_entry(buf, &s->q_dma.list, list) { |
dc02d50a HV |
286 | /* Parse and Groom VBI Data */ |
287 | s->q_dma.bytesused -= buf->bytesused; | |
288 | ivtv_process_vbi_data(itv, buf, 0, s->type); | |
289 | s->q_dma.bytesused += buf->bytesused; | |
290 | } | |
61bb725e | 291 | if (s->fh == NULL) { |
1a0adaf3 HV |
292 | ivtv_queue_move(s, &s->q_dma, NULL, &s->q_free, 0); |
293 | return; | |
294 | } | |
295 | } | |
296 | ivtv_queue_move(s, &s->q_dma, NULL, &s->q_full, s->q_dma.bytesused); | |
61bb725e | 297 | if (s->fh) |
1a0adaf3 HV |
298 | wake_up(&s->waitq); |
299 | } | |
300 | ||
301 | void ivtv_dma_stream_dec_prepare(struct ivtv_stream *s, u32 offset, int lock) | |
302 | { | |
303 | struct ivtv *itv = s->itv; | |
77aded6b IA |
304 | struct yuv_playback_info *yi = &itv->yuv_info; |
305 | u8 frame = yi->draw_frame; | |
306 | struct yuv_frame_info *f = &yi->new_frame_info[frame]; | |
1a0adaf3 | 307 | struct ivtv_buffer *buf; |
77aded6b | 308 | u32 y_size = 720 * ((f->src_h + 31) & ~31); |
1a0adaf3 HV |
309 | u32 uv_offset = offset + IVTV_YUV_BUFFER_UV_OFFSET; |
310 | int y_done = 0; | |
311 | int bytes_written = 0; | |
312 | unsigned long flags = 0; | |
313 | int idx = 0; | |
314 | ||
bd58df6d | 315 | IVTV_DEBUG_HI_DMA("DEC PREPARE DMA %s: %08x %08x\n", s->name, s->q_predma.bytesused, offset); |
77aded6b IA |
316 | |
317 | /* Insert buffer block for YUV if needed */ | |
318 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && f->offset_y) { | |
319 | if (yi->blanking_dmaptr) { | |
320 | s->sg_pending[idx].src = yi->blanking_dmaptr; | |
321 | s->sg_pending[idx].dst = offset; | |
322 | s->sg_pending[idx].size = 720 * 16; | |
323 | } | |
324 | offset += 720 * 16; | |
325 | idx++; | |
326 | } | |
327 | ||
805a4392 | 328 | list_for_each_entry(buf, &s->q_predma.list, list) { |
1a0adaf3 | 329 | /* YUV UV Offset from Y Buffer */ |
c240ad00 IA |
330 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && !y_done && |
331 | (bytes_written + buf->bytesused) >= y_size) { | |
332 | s->sg_pending[idx].src = buf->dma_handle; | |
333 | s->sg_pending[idx].dst = offset; | |
334 | s->sg_pending[idx].size = y_size - bytes_written; | |
1a0adaf3 | 335 | offset = uv_offset; |
c240ad00 IA |
336 | if (s->sg_pending[idx].size != buf->bytesused) { |
337 | idx++; | |
338 | s->sg_pending[idx].src = | |
339 | buf->dma_handle + s->sg_pending[idx - 1].size; | |
340 | s->sg_pending[idx].dst = offset; | |
341 | s->sg_pending[idx].size = | |
342 | buf->bytesused - s->sg_pending[idx - 1].size; | |
343 | offset += s->sg_pending[idx].size; | |
344 | } | |
1a0adaf3 | 345 | y_done = 1; |
c240ad00 IA |
346 | } else { |
347 | s->sg_pending[idx].src = buf->dma_handle; | |
348 | s->sg_pending[idx].dst = offset; | |
349 | s->sg_pending[idx].size = buf->bytesused; | |
350 | offset += buf->bytesused; | |
1a0adaf3 | 351 | } |
1a0adaf3 HV |
352 | bytes_written += buf->bytesused; |
353 | ||
354 | /* Sync SG buffers */ | |
355 | ivtv_buf_sync_for_device(s, buf); | |
356 | idx++; | |
357 | } | |
37093b1e | 358 | s->sg_pending_size = idx; |
1a0adaf3 HV |
359 | |
360 | /* Sync Hardware SG List of buffers */ | |
361 | ivtv_stream_sync_for_device(s); | |
362 | if (lock) | |
363 | spin_lock_irqsave(&itv->dma_reg_lock, flags); | |
364 | if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) { | |
365 | ivtv_dma_dec_start(s); | |
366 | } | |
367 | else { | |
368 | set_bit(IVTV_F_S_DMA_PENDING, &s->s_flags); | |
369 | } | |
370 | if (lock) | |
371 | spin_unlock_irqrestore(&itv->dma_reg_lock, flags); | |
372 | } | |
373 | ||
37093b1e HV |
374 | static void ivtv_dma_enc_start_xfer(struct ivtv_stream *s) |
375 | { | |
376 | struct ivtv *itv = s->itv; | |
377 | ||
378 | s->sg_dma->src = cpu_to_le32(s->sg_processing[s->sg_processed].src); | |
379 | s->sg_dma->dst = cpu_to_le32(s->sg_processing[s->sg_processed].dst); | |
380 | s->sg_dma->size = cpu_to_le32(s->sg_processing[s->sg_processed].size | 0x80000000); | |
381 | s->sg_processed++; | |
382 | /* Sync Hardware SG List of buffers */ | |
383 | ivtv_stream_sync_for_device(s); | |
384 | write_reg(s->sg_handle, IVTV_REG_ENCDMAADDR); | |
385 | write_reg_sync(read_reg(IVTV_REG_DMAXFER) | 0x02, IVTV_REG_DMAXFER); | |
2968e313 | 386 | itv->dma_timer.expires = jiffies + msecs_to_jiffies(300); |
9b2e5c6b | 387 | add_timer(&itv->dma_timer); |
37093b1e HV |
388 | } |
389 | ||
390 | static void ivtv_dma_dec_start_xfer(struct ivtv_stream *s) | |
391 | { | |
392 | struct ivtv *itv = s->itv; | |
393 | ||
394 | s->sg_dma->src = cpu_to_le32(s->sg_processing[s->sg_processed].src); | |
395 | s->sg_dma->dst = cpu_to_le32(s->sg_processing[s->sg_processed].dst); | |
396 | s->sg_dma->size = cpu_to_le32(s->sg_processing[s->sg_processed].size | 0x80000000); | |
397 | s->sg_processed++; | |
398 | /* Sync Hardware SG List of buffers */ | |
399 | ivtv_stream_sync_for_device(s); | |
400 | write_reg(s->sg_handle, IVTV_REG_DECDMAADDR); | |
401 | write_reg_sync(read_reg(IVTV_REG_DMAXFER) | 0x01, IVTV_REG_DMAXFER); | |
2968e313 | 402 | itv->dma_timer.expires = jiffies + msecs_to_jiffies(300); |
9b2e5c6b | 403 | add_timer(&itv->dma_timer); |
37093b1e HV |
404 | } |
405 | ||
1a0adaf3 HV |
406 | /* start the encoder DMA */ |
407 | static void ivtv_dma_enc_start(struct ivtv_stream *s) | |
408 | { | |
409 | struct ivtv *itv = s->itv; | |
410 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
411 | int i; | |
412 | ||
bd58df6d | 413 | IVTV_DEBUG_HI_DMA("start %s for %s\n", ivtv_use_dma(s) ? "DMA" : "PIO", s->name); |
dc02d50a | 414 | |
1a0adaf3 HV |
415 | if (s->q_predma.bytesused) |
416 | ivtv_queue_move(s, &s->q_predma, NULL, &s->q_dma, s->q_predma.bytesused); | |
dc02d50a HV |
417 | |
418 | if (ivtv_use_dma(s)) | |
37093b1e | 419 | s->sg_pending[s->sg_pending_size - 1].size += 256; |
1a0adaf3 HV |
420 | |
421 | /* If this is an MPEG stream, and VBI data is also pending, then append the | |
422 | VBI DMA to the MPEG DMA and transfer both sets of data at once. | |
423 | ||
424 | VBI DMA is a second class citizen compared to MPEG and mixing them together | |
425 | will confuse the firmware (the end of a VBI DMA is seen as the end of a | |
426 | MPEG DMA, thus effectively dropping an MPEG frame). So instead we make | |
427 | sure we only use the MPEG DMA to transfer the VBI DMA if both are in | |
428 | use. This way no conflicts occur. */ | |
429 | clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags); | |
37093b1e HV |
430 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && s_vbi->sg_pending_size && |
431 | s->sg_pending_size + s_vbi->sg_pending_size <= s->buffers) { | |
1a0adaf3 | 432 | ivtv_queue_move(s_vbi, &s_vbi->q_predma, NULL, &s_vbi->q_dma, s_vbi->q_predma.bytesused); |
dc02d50a | 433 | if (ivtv_use_dma(s_vbi)) |
37093b1e HV |
434 | s_vbi->sg_pending[s_vbi->sg_pending_size - 1].size += 256; |
435 | for (i = 0; i < s_vbi->sg_pending_size; i++) { | |
436 | s->sg_pending[s->sg_pending_size++] = s_vbi->sg_pending[i]; | |
1a0adaf3 | 437 | } |
37093b1e HV |
438 | s_vbi->dma_offset = s_vbi->pending_offset; |
439 | s_vbi->sg_pending_size = 0; | |
f4071b85 | 440 | s_vbi->dma_xfer_cnt++; |
1a0adaf3 | 441 | set_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags); |
6b1e5676 | 442 | IVTV_DEBUG_HI_DMA("include DMA for %s\n", s_vbi->name); |
1a0adaf3 HV |
443 | } |
444 | ||
f4071b85 | 445 | s->dma_xfer_cnt++; |
b0510f8d | 446 | memcpy(s->sg_processing, s->sg_pending, sizeof(struct ivtv_sg_host_element) * s->sg_pending_size); |
37093b1e HV |
447 | s->sg_processing_size = s->sg_pending_size; |
448 | s->sg_pending_size = 0; | |
449 | s->sg_processed = 0; | |
450 | s->dma_offset = s->pending_offset; | |
451 | s->dma_backup = s->pending_backup; | |
452 | s->dma_pts = s->pending_pts; | |
dd1e729d | 453 | |
dc02d50a | 454 | if (ivtv_use_pio(s)) { |
dc02d50a HV |
455 | set_bit(IVTV_F_I_WORK_HANDLER_PIO, &itv->i_flags); |
456 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); | |
457 | set_bit(IVTV_F_I_PIO, &itv->i_flags); | |
458 | itv->cur_pio_stream = s->type; | |
459 | } | |
460 | else { | |
37093b1e HV |
461 | itv->dma_retries = 0; |
462 | ivtv_dma_enc_start_xfer(s); | |
dc02d50a HV |
463 | set_bit(IVTV_F_I_DMA, &itv->i_flags); |
464 | itv->cur_dma_stream = s->type; | |
dc02d50a | 465 | } |
1a0adaf3 HV |
466 | } |
467 | ||
468 | static void ivtv_dma_dec_start(struct ivtv_stream *s) | |
469 | { | |
470 | struct ivtv *itv = s->itv; | |
471 | ||
472 | if (s->q_predma.bytesused) | |
473 | ivtv_queue_move(s, &s->q_predma, NULL, &s->q_dma, s->q_predma.bytesused); | |
37093b1e | 474 | s->dma_xfer_cnt++; |
b0510f8d | 475 | memcpy(s->sg_processing, s->sg_pending, sizeof(struct ivtv_sg_host_element) * s->sg_pending_size); |
37093b1e HV |
476 | s->sg_processing_size = s->sg_pending_size; |
477 | s->sg_pending_size = 0; | |
478 | s->sg_processed = 0; | |
479 | ||
bd58df6d | 480 | IVTV_DEBUG_HI_DMA("start DMA for %s\n", s->name); |
37093b1e HV |
481 | itv->dma_retries = 0; |
482 | ivtv_dma_dec_start_xfer(s); | |
1a0adaf3 HV |
483 | set_bit(IVTV_F_I_DMA, &itv->i_flags); |
484 | itv->cur_dma_stream = s->type; | |
1a0adaf3 HV |
485 | } |
486 | ||
487 | static void ivtv_irq_dma_read(struct ivtv *itv) | |
488 | { | |
489 | struct ivtv_stream *s = NULL; | |
490 | struct ivtv_buffer *buf; | |
37093b1e | 491 | int hw_stream_type = 0; |
1a0adaf3 | 492 | |
bd58df6d | 493 | IVTV_DEBUG_HI_IRQ("DEC DMA READ\n"); |
9b2e5c6b HV |
494 | |
495 | del_timer(&itv->dma_timer); | |
496 | ||
497 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags) && itv->cur_dma_stream < 0) | |
37093b1e | 498 | return; |
37093b1e | 499 | |
1a0adaf3 | 500 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { |
37093b1e HV |
501 | s = &itv->streams[itv->cur_dma_stream]; |
502 | ivtv_stream_sync_for_cpu(s); | |
503 | ||
504 | if (read_reg(IVTV_REG_DMASTATUS) & 0x14) { | |
505 | IVTV_DEBUG_WARN("DEC DMA ERROR %x (xfer %d of %d, retry %d)\n", | |
506 | read_reg(IVTV_REG_DMASTATUS), | |
507 | s->sg_processed, s->sg_processing_size, itv->dma_retries); | |
508 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); | |
509 | if (itv->dma_retries == 3) { | |
e17a06ba | 510 | /* Too many retries, give up on this frame */ |
37093b1e | 511 | itv->dma_retries = 0; |
e17a06ba | 512 | s->sg_processed = s->sg_processing_size; |
37093b1e HV |
513 | } |
514 | else { | |
515 | /* Retry, starting with the first xfer segment. | |
516 | Just retrying the current segment is not sufficient. */ | |
517 | s->sg_processed = 0; | |
518 | itv->dma_retries++; | |
519 | } | |
1a0adaf3 | 520 | } |
37093b1e HV |
521 | if (s->sg_processed < s->sg_processing_size) { |
522 | /* DMA next buffer */ | |
523 | ivtv_dma_dec_start_xfer(s); | |
524 | return; | |
1a0adaf3 | 525 | } |
37093b1e HV |
526 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) |
527 | hw_stream_type = 2; | |
bd58df6d | 528 | IVTV_DEBUG_HI_DMA("DEC DATA READ %s: %d\n", s->name, s->q_dma.bytesused); |
1a0adaf3 | 529 | |
1a0adaf3 HV |
530 | /* For some reason must kick the firmware, like PIO mode, |
531 | I think this tells the firmware we are done and the size | |
532 | of the xfer so it can calculate what we need next. | |
533 | I think we can do this part ourselves but would have to | |
534 | fully calculate xfer info ourselves and not use interrupts | |
535 | */ | |
536 | ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, s->q_dma.bytesused, | |
537 | hw_stream_type); | |
538 | ||
539 | /* Free last DMA call */ | |
540 | while ((buf = ivtv_dequeue(s, &s->q_dma)) != NULL) { | |
541 | ivtv_buf_sync_for_cpu(s, buf); | |
542 | ivtv_enqueue(s, buf, &s->q_free); | |
543 | } | |
544 | wake_up(&s->waitq); | |
545 | } | |
546 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); | |
547 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
548 | itv->cur_dma_stream = -1; | |
549 | wake_up(&itv->dma_waitq); | |
550 | } | |
551 | ||
552 | static void ivtv_irq_enc_dma_complete(struct ivtv *itv) | |
553 | { | |
554 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
555 | struct ivtv_stream *s; | |
556 | ||
587808d5 | 557 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA_END, 2, data); |
37093b1e | 558 | IVTV_DEBUG_HI_IRQ("ENC DMA COMPLETE %x %d (%d)\n", data[0], data[1], itv->cur_dma_stream); |
9b2e5c6b HV |
559 | |
560 | del_timer(&itv->dma_timer); | |
561 | ||
562 | if (itv->cur_dma_stream < 0) | |
1a0adaf3 | 563 | return; |
9b2e5c6b | 564 | |
37093b1e HV |
565 | s = &itv->streams[itv->cur_dma_stream]; |
566 | ivtv_stream_sync_for_cpu(s); | |
567 | ||
1a0adaf3 | 568 | if (data[0] & 0x18) { |
37093b1e HV |
569 | IVTV_DEBUG_WARN("ENC DMA ERROR %x (offset %08x, xfer %d of %d, retry %d)\n", data[0], |
570 | s->dma_offset, s->sg_processed, s->sg_processing_size, itv->dma_retries); | |
1a0adaf3 | 571 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); |
37093b1e | 572 | if (itv->dma_retries == 3) { |
e17a06ba | 573 | /* Too many retries, give up on this frame */ |
37093b1e | 574 | itv->dma_retries = 0; |
e17a06ba | 575 | s->sg_processed = s->sg_processing_size; |
37093b1e HV |
576 | } |
577 | else { | |
578 | /* Retry, starting with the first xfer segment. | |
579 | Just retrying the current segment is not sufficient. */ | |
580 | s->sg_processed = 0; | |
581 | itv->dma_retries++; | |
582 | } | |
1a0adaf3 | 583 | } |
37093b1e HV |
584 | if (s->sg_processed < s->sg_processing_size) { |
585 | /* DMA next buffer */ | |
586 | ivtv_dma_enc_start_xfer(s); | |
587 | return; | |
588 | } | |
1a0adaf3 HV |
589 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); |
590 | itv->cur_dma_stream = -1; | |
591 | dma_post(s); | |
1a0adaf3 | 592 | if (test_and_clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags)) { |
1a0adaf3 | 593 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
1a0adaf3 | 594 | dma_post(s); |
1a0adaf3 | 595 | } |
37093b1e HV |
596 | s->sg_processing_size = 0; |
597 | s->sg_processed = 0; | |
1a0adaf3 HV |
598 | wake_up(&itv->dma_waitq); |
599 | } | |
600 | ||
dc02d50a HV |
601 | static void ivtv_irq_enc_pio_complete(struct ivtv *itv) |
602 | { | |
603 | struct ivtv_stream *s; | |
604 | ||
605 | if (itv->cur_pio_stream < 0 || itv->cur_pio_stream >= IVTV_MAX_STREAMS) { | |
606 | itv->cur_pio_stream = -1; | |
607 | return; | |
608 | } | |
609 | s = &itv->streams[itv->cur_pio_stream]; | |
bd58df6d | 610 | IVTV_DEBUG_HI_IRQ("ENC PIO COMPLETE %s\n", s->name); |
dc02d50a HV |
611 | clear_bit(IVTV_F_I_PIO, &itv->i_flags); |
612 | itv->cur_pio_stream = -1; | |
613 | dma_post(s); | |
614 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
615 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 0); | |
616 | else if (s->type == IVTV_ENC_STREAM_TYPE_YUV) | |
617 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 1); | |
618 | else if (s->type == IVTV_ENC_STREAM_TYPE_PCM) | |
619 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 2); | |
620 | clear_bit(IVTV_F_I_PIO, &itv->i_flags); | |
621 | if (test_and_clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags)) { | |
dc02d50a | 622 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
dc02d50a | 623 | dma_post(s); |
dc02d50a HV |
624 | } |
625 | wake_up(&itv->dma_waitq); | |
626 | } | |
627 | ||
1a0adaf3 HV |
628 | static void ivtv_irq_dma_err(struct ivtv *itv) |
629 | { | |
630 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
d213ad08 | 631 | u32 status; |
1a0adaf3 HV |
632 | |
633 | del_timer(&itv->dma_timer); | |
d213ad08 | 634 | |
587808d5 | 635 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA_END, 2, data); |
d213ad08 | 636 | status = read_reg(IVTV_REG_DMASTATUS); |
1a0adaf3 | 637 | IVTV_DEBUG_WARN("DMA ERROR %08x %08x %08x %d\n", data[0], data[1], |
d213ad08 M |
638 | status, itv->cur_dma_stream); |
639 | /* | |
640 | * We do *not* write back to the IVTV_REG_DMASTATUS register to | |
641 | * clear the error status, if either the encoder write (0x02) or | |
642 | * decoder read (0x01) bus master DMA operation do not indicate | |
643 | * completed. We can race with the DMA engine, which may have | |
644 | * transitioned to completed status *after* we read the register. | |
645 | * Setting a IVTV_REG_DMASTATUS flag back to "busy" status, after the | |
646 | * DMA engine has completed, will cause the DMA engine to stop working. | |
647 | */ | |
648 | status &= 0x3; | |
649 | if (status == 0x3) | |
650 | write_reg(status, IVTV_REG_DMASTATUS); | |
651 | ||
1a0adaf3 HV |
652 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags) && |
653 | itv->cur_dma_stream >= 0 && itv->cur_dma_stream < IVTV_MAX_STREAMS) { | |
654 | struct ivtv_stream *s = &itv->streams[itv->cur_dma_stream]; | |
655 | ||
d213ad08 M |
656 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) { |
657 | /* retry */ | |
658 | /* | |
659 | * FIXME - handle cases of DMA error similar to | |
660 | * encoder below, except conditioned on status & 0x1 | |
661 | */ | |
1a0adaf3 | 662 | ivtv_dma_dec_start(s); |
d213ad08 M |
663 | return; |
664 | } else { | |
665 | if ((status & 0x2) == 0) { | |
666 | /* | |
667 | * CX2341x Bus Master DMA write is ongoing. | |
668 | * Reset the timer and let it complete. | |
669 | */ | |
670 | itv->dma_timer.expires = | |
671 | jiffies + msecs_to_jiffies(600); | |
672 | add_timer(&itv->dma_timer); | |
673 | return; | |
674 | } | |
675 | ||
676 | if (itv->dma_retries < 3) { | |
677 | /* | |
678 | * CX2341x Bus Master DMA write has ended. | |
679 | * Retry the write, starting with the first | |
680 | * xfer segment. Just retrying the current | |
681 | * segment is not sufficient. | |
682 | */ | |
683 | s->sg_processed = 0; | |
684 | itv->dma_retries++; | |
685 | ivtv_dma_enc_start_xfer(s); | |
686 | return; | |
687 | } | |
688 | /* Too many retries, give up on this one */ | |
689 | } | |
690 | ||
1a0adaf3 | 691 | } |
37093b1e HV |
692 | if (test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { |
693 | ivtv_udma_start(itv); | |
694 | return; | |
695 | } | |
1a0adaf3 HV |
696 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); |
697 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
698 | itv->cur_dma_stream = -1; | |
699 | wake_up(&itv->dma_waitq); | |
700 | } | |
701 | ||
702 | static void ivtv_irq_enc_start_cap(struct ivtv *itv) | |
703 | { | |
704 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
705 | struct ivtv_stream *s; | |
706 | ||
707 | /* Get DMA destination and size arguments from card */ | |
587808d5 | 708 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA, 7, data); |
bd58df6d | 709 | IVTV_DEBUG_HI_IRQ("ENC START CAP %d: %08x %08x\n", data[0], data[1], data[2]); |
1a0adaf3 HV |
710 | |
711 | if (data[0] > 2 || data[1] == 0 || data[2] == 0) { | |
712 | IVTV_DEBUG_WARN("Unknown input: %08x %08x %08x\n", | |
713 | data[0], data[1], data[2]); | |
714 | return; | |
715 | } | |
1a0adaf3 HV |
716 | s = &itv->streams[ivtv_stream_map[data[0]]]; |
717 | if (!stream_enc_dma_append(s, data)) { | |
dc02d50a | 718 | set_bit(ivtv_use_pio(s) ? IVTV_F_S_PIO_PENDING : IVTV_F_S_DMA_PENDING, &s->s_flags); |
1a0adaf3 HV |
719 | } |
720 | } | |
721 | ||
722 | static void ivtv_irq_enc_vbi_cap(struct ivtv *itv) | |
723 | { | |
1a0adaf3 HV |
724 | u32 data[CX2341X_MBOX_MAX_DATA]; |
725 | struct ivtv_stream *s; | |
726 | ||
bd58df6d | 727 | IVTV_DEBUG_HI_IRQ("ENC START VBI CAP\n"); |
1a0adaf3 HV |
728 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
729 | ||
d526afe0 | 730 | if (!stream_enc_dma_append(s, data)) |
dc02d50a | 731 | set_bit(ivtv_use_pio(s) ? IVTV_F_S_PIO_PENDING : IVTV_F_S_DMA_PENDING, &s->s_flags); |
1a0adaf3 HV |
732 | } |
733 | ||
dc02d50a | 734 | static void ivtv_irq_dec_vbi_reinsert(struct ivtv *itv) |
1a0adaf3 HV |
735 | { |
736 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
737 | struct ivtv_stream *s = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
738 | ||
bd58df6d | 739 | IVTV_DEBUG_HI_IRQ("DEC VBI REINSERT\n"); |
1a0adaf3 HV |
740 | if (test_bit(IVTV_F_S_CLAIMED, &s->s_flags) && |
741 | !stream_enc_dma_append(s, data)) { | |
dc02d50a | 742 | set_bit(IVTV_F_S_PIO_PENDING, &s->s_flags); |
1a0adaf3 HV |
743 | } |
744 | } | |
745 | ||
746 | static void ivtv_irq_dec_data_req(struct ivtv *itv) | |
747 | { | |
748 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
749 | struct ivtv_stream *s; | |
750 | ||
751 | /* YUV or MPG */ | |
1a0adaf3 HV |
752 | |
753 | if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags)) { | |
587808d5 | 754 | ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, 2, data); |
77aded6b IA |
755 | itv->dma_data_req_size = |
756 | 1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31); | |
757 | itv->dma_data_req_offset = data[1]; | |
758 | if (atomic_read(&itv->yuv_info.next_dma_frame) >= 0) | |
759 | ivtv_yuv_frame_complete(itv); | |
1a0adaf3 HV |
760 | s = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; |
761 | } | |
762 | else { | |
587808d5 | 763 | ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, 3, data); |
14d5deba | 764 | itv->dma_data_req_size = min_t(u32, data[2], 0x10000); |
1a0adaf3 HV |
765 | itv->dma_data_req_offset = data[1]; |
766 | s = &itv->streams[IVTV_DEC_STREAM_TYPE_MPG]; | |
767 | } | |
bd58df6d | 768 | IVTV_DEBUG_HI_IRQ("DEC DATA REQ %s: %d %08x %u\n", s->name, s->q_full.bytesused, |
1a0adaf3 HV |
769 | itv->dma_data_req_offset, itv->dma_data_req_size); |
770 | if (itv->dma_data_req_size == 0 || s->q_full.bytesused < itv->dma_data_req_size) { | |
771 | set_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
772 | } | |
773 | else { | |
77aded6b IA |
774 | if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags)) |
775 | ivtv_yuv_setup_stream_frame(itv); | |
1a0adaf3 HV |
776 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); |
777 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
778 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 0); | |
779 | } | |
780 | } | |
781 | ||
782 | static void ivtv_irq_vsync(struct ivtv *itv) | |
783 | { | |
784 | /* The vsync interrupt is unusual in that it won't clear until | |
785 | * the end of the first line for the current field, at which | |
786 | * point it clears itself. This can result in repeated vsync | |
787 | * interrupts, or a missed vsync. Read some of the registers | |
788 | * to determine the line being displayed and ensure we handle | |
789 | * one vsync per frame. | |
790 | */ | |
4e1af31a | 791 | unsigned int frame = read_reg(IVTV_REG_DEC_LINE_FIELD) & 1; |
a3e5f5e2 | 792 | struct yuv_playback_info *yi = &itv->yuv_info; |
2bd7ac55 | 793 | int last_dma_frame = atomic_read(&yi->next_dma_frame); |
3b5c1c8e | 794 | struct yuv_frame_info *f = &yi->new_frame_info[last_dma_frame]; |
1a0adaf3 HV |
795 | |
796 | if (0) IVTV_DEBUG_IRQ("DEC VSYNC\n"); | |
797 | ||
3b5c1c8e IA |
798 | if (((frame ^ f->sync_field) == 0 && |
799 | ((itv->last_vsync_field & 1) ^ f->sync_field)) || | |
800 | (frame != (itv->last_vsync_field & 1) && !f->interlaced)) { | |
1a0adaf3 HV |
801 | int next_dma_frame = last_dma_frame; |
802 | ||
3b5c1c8e | 803 | if (!(f->interlaced && f->delay && yi->fields_lapsed < 1)) { |
a3e5f5e2 | 804 | if (next_dma_frame >= 0 && next_dma_frame != atomic_read(&yi->next_fill_frame)) { |
bfd7beac IA |
805 | write_reg(yuv_offset[next_dma_frame] >> 4, 0x82c); |
806 | write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830); | |
807 | write_reg(yuv_offset[next_dma_frame] >> 4, 0x834); | |
808 | write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838); | |
a3e5f5e2 IA |
809 | next_dma_frame = (next_dma_frame + 1) % IVTV_YUV_BUFFERS; |
810 | atomic_set(&yi->next_dma_frame, next_dma_frame); | |
811 | yi->fields_lapsed = -1; | |
2bd7ac55 | 812 | yi->running = 1; |
bfd7beac | 813 | } |
1a0adaf3 HV |
814 | } |
815 | } | |
a158f355 | 816 | if (frame != (itv->last_vsync_field & 1)) { |
09250193 HV |
817 | static const struct v4l2_event evtop = { |
818 | .type = V4L2_EVENT_VSYNC, | |
819 | .u.vsync.field = V4L2_FIELD_TOP, | |
820 | }; | |
821 | static const struct v4l2_event evbottom = { | |
822 | .type = V4L2_EVENT_VSYNC, | |
823 | .u.vsync.field = V4L2_FIELD_BOTTOM, | |
824 | }; | |
1a0adaf3 HV |
825 | struct ivtv_stream *s = ivtv_get_output_stream(itv); |
826 | ||
a158f355 | 827 | itv->last_vsync_field += 1; |
1a0adaf3 HV |
828 | if (frame == 0) { |
829 | clear_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags); | |
830 | clear_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags); | |
831 | } | |
832 | else { | |
833 | set_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags); | |
834 | } | |
835 | if (test_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags)) { | |
836 | set_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags); | |
837 | wake_up(&itv->event_waitq); | |
09250193 HV |
838 | if (s) |
839 | wake_up(&s->waitq); | |
1a0adaf3 | 840 | } |
09250193 HV |
841 | if (s && s->vdev) |
842 | v4l2_event_queue(s->vdev, frame ? &evtop : &evbottom); | |
1a0adaf3 | 843 | wake_up(&itv->vsync_waitq); |
1a0adaf3 HV |
844 | |
845 | /* Send VBI to saa7127 */ | |
2f3a9893 HV |
846 | if (frame && (itv->output_mode == OUT_PASSTHROUGH || |
847 | test_bit(IVTV_F_I_UPDATE_WSS, &itv->i_flags) || | |
848 | test_bit(IVTV_F_I_UPDATE_VPS, &itv->i_flags) || | |
849 | test_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags))) { | |
1e13f9e3 | 850 | set_bit(IVTV_F_I_WORK_HANDLER_VBI, &itv->i_flags); |
dc02d50a | 851 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); |
1e13f9e3 | 852 | } |
1a0adaf3 HV |
853 | |
854 | /* Check if we need to update the yuv registers */ | |
2bd7ac55 | 855 | if (yi->running && (yi->yuv_forced_update || f->update)) { |
3b5c1c8e | 856 | if (!f->update) { |
2bd7ac55 IA |
857 | last_dma_frame = |
858 | (u8)(atomic_read(&yi->next_dma_frame) - | |
859 | 1) % IVTV_YUV_BUFFERS; | |
3b5c1c8e IA |
860 | f = &yi->new_frame_info[last_dma_frame]; |
861 | } | |
1a0adaf3 | 862 | |
3b5c1c8e | 863 | if (f->src_w) { |
a3e5f5e2 | 864 | yi->update_frame = last_dma_frame; |
3b5c1c8e | 865 | f->update = 0; |
a3e5f5e2 | 866 | yi->yuv_forced_update = 0; |
1e13f9e3 | 867 | set_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags); |
dc02d50a | 868 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); |
1a0adaf3 HV |
869 | } |
870 | } | |
bfd7beac | 871 | |
a3e5f5e2 | 872 | yi->fields_lapsed++; |
1a0adaf3 HV |
873 | } |
874 | } | |
875 | ||
2f3a9893 | 876 | #define IVTV_IRQ_DMA (IVTV_IRQ_DMA_READ | IVTV_IRQ_ENC_DMA_COMPLETE | IVTV_IRQ_DMA_ERR | IVTV_IRQ_ENC_START_CAP | IVTV_IRQ_ENC_VBI_CAP | IVTV_IRQ_DEC_DATA_REQ | IVTV_IRQ_DEC_VBI_RE_INSERT) |
1a0adaf3 HV |
877 | |
878 | irqreturn_t ivtv_irq_handler(int irq, void *dev_id) | |
879 | { | |
880 | struct ivtv *itv = (struct ivtv *)dev_id; | |
881 | u32 combo; | |
882 | u32 stat; | |
883 | int i; | |
884 | u8 vsync_force = 0; | |
885 | ||
886 | spin_lock(&itv->dma_reg_lock); | |
887 | /* get contents of irq status register */ | |
888 | stat = read_reg(IVTV_REG_IRQSTATUS); | |
889 | ||
890 | combo = ~itv->irqmask & stat; | |
891 | ||
892 | /* Clear out IRQ */ | |
893 | if (combo) write_reg(combo, IVTV_REG_IRQSTATUS); | |
894 | ||
895 | if (0 == combo) { | |
896 | /* The vsync interrupt is unusual and clears itself. If we | |
897 | * took too long, we may have missed it. Do some checks | |
898 | */ | |
899 | if (~itv->irqmask & IVTV_IRQ_DEC_VSYNC) { | |
900 | /* vsync is enabled, see if we're in a new field */ | |
4e1af31a AW |
901 | if ((itv->last_vsync_field & 1) != |
902 | (read_reg(IVTV_REG_DEC_LINE_FIELD) & 1)) { | |
1a0adaf3 | 903 | /* New field, looks like we missed it */ |
4e1af31a AW |
904 | IVTV_DEBUG_YUV("VSync interrupt missed %d\n", |
905 | read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16); | |
1a0adaf3 HV |
906 | vsync_force = 1; |
907 | } | |
908 | } | |
909 | ||
910 | if (!vsync_force) { | |
911 | /* No Vsync expected, wasn't for us */ | |
912 | spin_unlock(&itv->dma_reg_lock); | |
913 | return IRQ_NONE; | |
914 | } | |
915 | } | |
916 | ||
917 | /* Exclude interrupts noted below from the output, otherwise the log is flooded with | |
918 | these messages */ | |
919 | if (combo & ~0xff6d0400) | |
bd58df6d | 920 | IVTV_DEBUG_HI_IRQ("======= valid IRQ bits: 0x%08x ======\n", combo); |
1a0adaf3 HV |
921 | |
922 | if (combo & IVTV_IRQ_DEC_DMA_COMPLETE) { | |
bd58df6d | 923 | IVTV_DEBUG_HI_IRQ("DEC DMA COMPLETE\n"); |
1a0adaf3 HV |
924 | } |
925 | ||
926 | if (combo & IVTV_IRQ_DMA_READ) { | |
927 | ivtv_irq_dma_read(itv); | |
928 | } | |
929 | ||
930 | if (combo & IVTV_IRQ_ENC_DMA_COMPLETE) { | |
931 | ivtv_irq_enc_dma_complete(itv); | |
932 | } | |
933 | ||
dc02d50a HV |
934 | if (combo & IVTV_IRQ_ENC_PIO_COMPLETE) { |
935 | ivtv_irq_enc_pio_complete(itv); | |
936 | } | |
937 | ||
1a0adaf3 HV |
938 | if (combo & IVTV_IRQ_DMA_ERR) { |
939 | ivtv_irq_dma_err(itv); | |
940 | } | |
941 | ||
942 | if (combo & IVTV_IRQ_ENC_START_CAP) { | |
943 | ivtv_irq_enc_start_cap(itv); | |
944 | } | |
945 | ||
946 | if (combo & IVTV_IRQ_ENC_VBI_CAP) { | |
947 | ivtv_irq_enc_vbi_cap(itv); | |
948 | } | |
949 | ||
950 | if (combo & IVTV_IRQ_DEC_VBI_RE_INSERT) { | |
dc02d50a | 951 | ivtv_irq_dec_vbi_reinsert(itv); |
1a0adaf3 HV |
952 | } |
953 | ||
954 | if (combo & IVTV_IRQ_ENC_EOS) { | |
955 | IVTV_DEBUG_IRQ("ENC EOS\n"); | |
956 | set_bit(IVTV_F_I_EOS, &itv->i_flags); | |
fd8b281a | 957 | wake_up(&itv->eos_waitq); |
1a0adaf3 HV |
958 | } |
959 | ||
960 | if (combo & IVTV_IRQ_DEC_DATA_REQ) { | |
961 | ivtv_irq_dec_data_req(itv); | |
962 | } | |
963 | ||
964 | /* Decoder Vertical Sync - We can't rely on 'combo', so check if vsync enabled */ | |
965 | if (~itv->irqmask & IVTV_IRQ_DEC_VSYNC) { | |
966 | ivtv_irq_vsync(itv); | |
967 | } | |
968 | ||
969 | if (combo & IVTV_IRQ_ENC_VIM_RST) { | |
970 | IVTV_DEBUG_IRQ("VIM RST\n"); | |
971 | /*ivtv_vapi(itv, CX2341X_ENC_REFRESH_INPUT, 0); */ | |
972 | } | |
973 | ||
974 | if (combo & IVTV_IRQ_DEC_AUD_MODE_CHG) { | |
975 | IVTV_DEBUG_INFO("Stereo mode changed\n"); | |
976 | } | |
977 | ||
978 | if ((combo & IVTV_IRQ_DMA) && !test_bit(IVTV_F_I_DMA, &itv->i_flags)) { | |
33bc4dea | 979 | itv->irq_rr_idx++; |
1a0adaf3 | 980 | for (i = 0; i < IVTV_MAX_STREAMS; i++) { |
33bc4dea | 981 | int idx = (i + itv->irq_rr_idx) % IVTV_MAX_STREAMS; |
1a0adaf3 HV |
982 | struct ivtv_stream *s = &itv->streams[idx]; |
983 | ||
984 | if (!test_and_clear_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) | |
985 | continue; | |
986 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) | |
987 | ivtv_dma_dec_start(s); | |
988 | else | |
989 | ivtv_dma_enc_start(s); | |
990 | break; | |
991 | } | |
b6e436b2 IA |
992 | |
993 | if (i == IVTV_MAX_STREAMS && | |
994 | test_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags)) | |
1a0adaf3 | 995 | ivtv_udma_start(itv); |
1a0adaf3 HV |
996 | } |
997 | ||
dc02d50a | 998 | if ((combo & IVTV_IRQ_DMA) && !test_bit(IVTV_F_I_PIO, &itv->i_flags)) { |
33bc4dea | 999 | itv->irq_rr_idx++; |
dc02d50a | 1000 | for (i = 0; i < IVTV_MAX_STREAMS; i++) { |
33bc4dea | 1001 | int idx = (i + itv->irq_rr_idx) % IVTV_MAX_STREAMS; |
dc02d50a HV |
1002 | struct ivtv_stream *s = &itv->streams[idx]; |
1003 | ||
1004 | if (!test_and_clear_bit(IVTV_F_S_PIO_PENDING, &s->s_flags)) | |
1005 | continue; | |
1006 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type < IVTV_DEC_STREAM_TYPE_MPG) | |
1007 | ivtv_dma_enc_start(s); | |
1008 | break; | |
1009 | } | |
1010 | } | |
1011 | ||
2f3a9893 | 1012 | if (test_and_clear_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags)) { |
7bc46560 | 1013 | queue_kthread_work(&itv->irq_worker, &itv->irq_work); |
2f3a9893 | 1014 | } |
dc02d50a | 1015 | |
1a0adaf3 HV |
1016 | spin_unlock(&itv->dma_reg_lock); |
1017 | ||
1018 | /* If we've just handled a 'forced' vsync, it's safest to say it | |
1019 | * wasn't ours. Another device may have triggered it at just | |
1020 | * the right time. | |
1021 | */ | |
1022 | return vsync_force ? IRQ_NONE : IRQ_HANDLED; | |
1023 | } | |
1024 | ||
1025 | void ivtv_unfinished_dma(unsigned long arg) | |
1026 | { | |
1027 | struct ivtv *itv = (struct ivtv *)arg; | |
1028 | ||
1029 | if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) | |
1030 | return; | |
1031 | IVTV_ERR("DMA TIMEOUT %08x %d\n", read_reg(IVTV_REG_DMASTATUS), itv->cur_dma_stream); | |
1032 | ||
1033 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); | |
1034 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); | |
1035 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
1036 | itv->cur_dma_stream = -1; | |
1037 | wake_up(&itv->dma_waitq); | |
1038 | } |