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Commit | Line | Data |
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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" |
1a0adaf3 HV |
28 | |
29 | #define DMA_MAGIC_COOKIE 0x000001fe | |
30 | ||
1a0adaf3 HV |
31 | static void ivtv_dma_dec_start(struct ivtv_stream *s); |
32 | ||
33 | static const int ivtv_stream_map[] = { | |
34 | IVTV_ENC_STREAM_TYPE_MPG, | |
35 | IVTV_ENC_STREAM_TYPE_YUV, | |
36 | IVTV_ENC_STREAM_TYPE_PCM, | |
37 | IVTV_ENC_STREAM_TYPE_VBI, | |
38 | }; | |
39 | ||
dc02d50a HV |
40 | |
41 | static void ivtv_pio_work_handler(struct ivtv *itv) | |
1a0adaf3 | 42 | { |
dc02d50a HV |
43 | struct ivtv_stream *s = &itv->streams[itv->cur_pio_stream]; |
44 | struct ivtv_buffer *buf; | |
dc02d50a HV |
45 | int i = 0; |
46 | ||
bd58df6d | 47 | IVTV_DEBUG_HI_DMA("ivtv_pio_work_handler\n"); |
dc02d50a HV |
48 | if (itv->cur_pio_stream < 0 || itv->cur_pio_stream >= IVTV_MAX_STREAMS || |
49 | s->v4l2dev == NULL || !ivtv_use_pio(s)) { | |
50 | itv->cur_pio_stream = -1; | |
51 | /* trigger PIO complete user interrupt */ | |
52 | write_reg(IVTV_IRQ_ENC_PIO_COMPLETE, 0x44); | |
53 | return; | |
54 | } | |
bd58df6d | 55 | IVTV_DEBUG_HI_DMA("Process PIO %s\n", s->name); |
805a4392 | 56 | list_for_each_entry(buf, &s->q_dma.list, list) { |
37093b1e | 57 | u32 size = s->sg_processing[i].size & 0x3ffff; |
1a0adaf3 | 58 | |
dc02d50a HV |
59 | /* Copy the data from the card to the buffer */ |
60 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
37093b1e | 61 | memcpy_fromio(buf->buf, itv->dec_mem + s->sg_processing[i].src - IVTV_DECODER_OFFSET, size); |
dc02d50a HV |
62 | } |
63 | else { | |
37093b1e | 64 | memcpy_fromio(buf->buf, itv->enc_mem + s->sg_processing[i].src, size); |
dc02d50a | 65 | } |
dc02d50a | 66 | i++; |
37093b1e HV |
67 | if (i == s->sg_processing_size) |
68 | break; | |
dc02d50a HV |
69 | } |
70 | write_reg(IVTV_IRQ_ENC_PIO_COMPLETE, 0x44); | |
1a0adaf3 HV |
71 | } |
72 | ||
1e13f9e3 HV |
73 | void ivtv_irq_work_handler(struct work_struct *work) |
74 | { | |
75 | struct ivtv *itv = container_of(work, struct ivtv, irq_work_queue); | |
76 | ||
77 | DEFINE_WAIT(wait); | |
78 | ||
dc02d50a HV |
79 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_PIO, &itv->i_flags)) |
80 | ivtv_pio_work_handler(itv); | |
81 | ||
1e13f9e3 | 82 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_VBI, &itv->i_flags)) |
dc02d50a | 83 | ivtv_vbi_work_handler(itv); |
1e13f9e3 HV |
84 | |
85 | if (test_and_clear_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags)) | |
86 | ivtv_yuv_work_handler(itv); | |
87 | } | |
88 | ||
1a0adaf3 HV |
89 | /* Determine the required DMA size, setup enough buffers in the predma queue and |
90 | actually copy the data from the card to the buffers in case a PIO transfer is | |
91 | required for this stream. | |
92 | */ | |
93 | static int stream_enc_dma_append(struct ivtv_stream *s, u32 data[CX2341X_MBOX_MAX_DATA]) | |
94 | { | |
95 | struct ivtv *itv = s->itv; | |
96 | struct ivtv_buffer *buf; | |
1a0adaf3 HV |
97 | u32 bytes_needed = 0; |
98 | u32 offset, size; | |
99 | u32 UVoffset = 0, UVsize = 0; | |
100 | int skip_bufs = s->q_predma.buffers; | |
37093b1e | 101 | int idx = s->sg_pending_size; |
1a0adaf3 HV |
102 | int rc; |
103 | ||
104 | /* sanity checks */ | |
105 | if (s->v4l2dev == NULL) { | |
106 | IVTV_DEBUG_WARN("Stream %s not started\n", s->name); | |
107 | return -1; | |
108 | } | |
109 | if (!test_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
110 | IVTV_DEBUG_WARN("Stream %s not open\n", s->name); | |
111 | return -1; | |
112 | } | |
113 | ||
114 | /* determine offset, size and PTS for the various streams */ | |
115 | switch (s->type) { | |
116 | case IVTV_ENC_STREAM_TYPE_MPG: | |
117 | offset = data[1]; | |
118 | size = data[2]; | |
37093b1e | 119 | s->pending_pts = 0; |
1a0adaf3 HV |
120 | break; |
121 | ||
122 | case IVTV_ENC_STREAM_TYPE_YUV: | |
123 | offset = data[1]; | |
124 | size = data[2]; | |
125 | UVoffset = data[3]; | |
126 | UVsize = data[4]; | |
37093b1e | 127 | s->pending_pts = ((u64) data[5] << 32) | data[6]; |
1a0adaf3 HV |
128 | break; |
129 | ||
130 | case IVTV_ENC_STREAM_TYPE_PCM: | |
131 | offset = data[1] + 12; | |
132 | size = data[2] - 12; | |
37093b1e | 133 | s->pending_pts = read_dec(offset - 8) | |
1a0adaf3 HV |
134 | ((u64)(read_dec(offset - 12)) << 32); |
135 | if (itv->has_cx23415) | |
136 | offset += IVTV_DECODER_OFFSET; | |
137 | break; | |
138 | ||
139 | case IVTV_ENC_STREAM_TYPE_VBI: | |
140 | size = itv->vbi.enc_size * itv->vbi.fpi; | |
141 | offset = read_enc(itv->vbi.enc_start - 4) + 12; | |
142 | if (offset == 12) { | |
143 | IVTV_DEBUG_INFO("VBI offset == 0\n"); | |
144 | return -1; | |
145 | } | |
37093b1e | 146 | s->pending_pts = read_enc(offset - 4) | ((u64)read_enc(offset - 8) << 32); |
1a0adaf3 HV |
147 | break; |
148 | ||
149 | case IVTV_DEC_STREAM_TYPE_VBI: | |
150 | size = read_dec(itv->vbi.dec_start + 4) + 8; | |
151 | offset = read_dec(itv->vbi.dec_start) + itv->vbi.dec_start; | |
37093b1e | 152 | s->pending_pts = 0; |
1a0adaf3 HV |
153 | offset += IVTV_DECODER_OFFSET; |
154 | break; | |
155 | default: | |
156 | /* shouldn't happen */ | |
157 | return -1; | |
158 | } | |
159 | ||
160 | /* if this is the start of the DMA then fill in the magic cookie */ | |
51a99c04 | 161 | if (s->sg_pending_size == 0 && ivtv_use_dma(s)) { |
1a0adaf3 HV |
162 | if (itv->has_cx23415 && (s->type == IVTV_ENC_STREAM_TYPE_PCM || |
163 | s->type == IVTV_DEC_STREAM_TYPE_VBI)) { | |
37093b1e | 164 | s->pending_backup = read_dec(offset - IVTV_DECODER_OFFSET); |
1a0adaf3 HV |
165 | write_dec_sync(cpu_to_le32(DMA_MAGIC_COOKIE), offset - IVTV_DECODER_OFFSET); |
166 | } | |
167 | else { | |
37093b1e | 168 | s->pending_backup = read_enc(offset); |
1a0adaf3 HV |
169 | write_enc_sync(cpu_to_le32(DMA_MAGIC_COOKIE), offset); |
170 | } | |
37093b1e | 171 | s->pending_offset = offset; |
1a0adaf3 HV |
172 | } |
173 | ||
174 | bytes_needed = size; | |
175 | if (s->type == IVTV_ENC_STREAM_TYPE_YUV) { | |
176 | /* The size for the Y samples needs to be rounded upwards to a | |
177 | multiple of the buf_size. The UV samples then start in the | |
178 | next buffer. */ | |
179 | bytes_needed = s->buf_size * ((bytes_needed + s->buf_size - 1) / s->buf_size); | |
180 | bytes_needed += UVsize; | |
181 | } | |
182 | ||
bd58df6d | 183 | IVTV_DEBUG_HI_DMA("%s %s: 0x%08x bytes at 0x%08x\n", |
1a0adaf3 HV |
184 | ivtv_use_pio(s) ? "PIO" : "DMA", s->name, bytes_needed, offset); |
185 | ||
186 | rc = ivtv_queue_move(s, &s->q_free, &s->q_full, &s->q_predma, bytes_needed); | |
187 | if (rc < 0) { /* Insufficient buffers */ | |
188 | IVTV_DEBUG_WARN("Cannot obtain %d bytes for %s data transfer\n", | |
189 | bytes_needed, s->name); | |
190 | return -1; | |
191 | } | |
192 | if (rc && !s->buffers_stolen && (s->s_flags & IVTV_F_S_APPL_IO)) { | |
193 | IVTV_WARN("All %s stream buffers are full. Dropping data.\n", s->name); | |
194 | IVTV_WARN("Cause: the application is not reading fast enough.\n"); | |
195 | } | |
196 | s->buffers_stolen = rc; | |
197 | ||
37093b1e | 198 | /* got the buffers, now fill in sg_pending */ |
1a0adaf3 HV |
199 | buf = list_entry(s->q_predma.list.next, struct ivtv_buffer, list); |
200 | memset(buf->buf, 0, 128); | |
805a4392 | 201 | list_for_each_entry(buf, &s->q_predma.list, list) { |
1a0adaf3 HV |
202 | if (skip_bufs-- > 0) |
203 | continue; | |
37093b1e HV |
204 | s->sg_pending[idx].dst = buf->dma_handle; |
205 | s->sg_pending[idx].src = offset; | |
206 | s->sg_pending[idx].size = s->buf_size; | |
1a0adaf3 | 207 | buf->bytesused = (size < s->buf_size) ? size : s->buf_size; |
f4071b85 | 208 | buf->dma_xfer_cnt = s->dma_xfer_cnt; |
1a0adaf3 | 209 | |
1a0adaf3 HV |
210 | s->q_predma.bytesused += buf->bytesused; |
211 | size -= buf->bytesused; | |
212 | offset += s->buf_size; | |
213 | ||
214 | /* Sync SG buffers */ | |
215 | ivtv_buf_sync_for_device(s, buf); | |
216 | ||
217 | if (size == 0) { /* YUV */ | |
218 | /* process the UV section */ | |
219 | offset = UVoffset; | |
220 | size = UVsize; | |
221 | } | |
222 | idx++; | |
223 | } | |
37093b1e | 224 | s->sg_pending_size = idx; |
1a0adaf3 HV |
225 | return 0; |
226 | } | |
227 | ||
228 | static void dma_post(struct ivtv_stream *s) | |
229 | { | |
230 | struct ivtv *itv = s->itv; | |
231 | struct ivtv_buffer *buf = NULL; | |
232 | struct list_head *p; | |
233 | u32 offset; | |
234 | u32 *u32buf; | |
235 | int x = 0; | |
236 | ||
bd58df6d | 237 | IVTV_DEBUG_HI_DMA("%s %s completed (%x)\n", ivtv_use_pio(s) ? "PIO" : "DMA", |
1a0adaf3 HV |
238 | s->name, s->dma_offset); |
239 | list_for_each(p, &s->q_dma.list) { | |
240 | buf = list_entry(p, struct ivtv_buffer, list); | |
241 | u32buf = (u32 *)buf->buf; | |
242 | ||
243 | /* Sync Buffer */ | |
244 | ivtv_buf_sync_for_cpu(s, buf); | |
245 | ||
51a99c04 | 246 | if (x == 0 && ivtv_use_dma(s)) { |
1a0adaf3 HV |
247 | offset = s->dma_last_offset; |
248 | if (u32buf[offset / 4] != DMA_MAGIC_COOKIE) | |
249 | { | |
250 | for (offset = 0; offset < 64; offset++) { | |
251 | if (u32buf[offset] == DMA_MAGIC_COOKIE) { | |
252 | break; | |
253 | } | |
254 | } | |
255 | offset *= 4; | |
256 | if (offset == 256) { | |
257 | IVTV_DEBUG_WARN("%s: Couldn't find start of buffer within the first 256 bytes\n", s->name); | |
258 | offset = s->dma_last_offset; | |
259 | } | |
260 | if (s->dma_last_offset != offset) | |
261 | IVTV_DEBUG_WARN("%s: offset %d -> %d\n", s->name, s->dma_last_offset, offset); | |
262 | s->dma_last_offset = offset; | |
263 | } | |
264 | if (itv->has_cx23415 && (s->type == IVTV_ENC_STREAM_TYPE_PCM || | |
265 | s->type == IVTV_DEC_STREAM_TYPE_VBI)) { | |
266 | write_dec_sync(0, s->dma_offset - IVTV_DECODER_OFFSET); | |
267 | } | |
268 | else { | |
269 | write_enc_sync(0, s->dma_offset); | |
270 | } | |
271 | if (offset) { | |
272 | buf->bytesused -= offset; | |
273 | memcpy(buf->buf, buf->buf + offset, buf->bytesused + offset); | |
274 | } | |
275 | *u32buf = cpu_to_le32(s->dma_backup); | |
276 | } | |
277 | x++; | |
278 | /* flag byteswap ABCD -> DCBA for MPG & VBI data outside irq */ | |
279 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG || | |
280 | s->type == IVTV_ENC_STREAM_TYPE_VBI) | |
f4071b85 | 281 | buf->b_flags |= IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
282 | } |
283 | if (buf) | |
284 | buf->bytesused += s->dma_last_offset; | |
285 | if (buf && s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
805a4392 | 286 | list_for_each_entry(buf, &s->q_dma.list, list) { |
dc02d50a HV |
287 | /* Parse and Groom VBI Data */ |
288 | s->q_dma.bytesused -= buf->bytesused; | |
289 | ivtv_process_vbi_data(itv, buf, 0, s->type); | |
290 | s->q_dma.bytesused += buf->bytesused; | |
291 | } | |
1a0adaf3 HV |
292 | if (s->id == -1) { |
293 | ivtv_queue_move(s, &s->q_dma, NULL, &s->q_free, 0); | |
294 | return; | |
295 | } | |
296 | } | |
297 | ivtv_queue_move(s, &s->q_dma, NULL, &s->q_full, s->q_dma.bytesused); | |
298 | if (s->id != -1) | |
299 | wake_up(&s->waitq); | |
300 | } | |
301 | ||
302 | void ivtv_dma_stream_dec_prepare(struct ivtv_stream *s, u32 offset, int lock) | |
303 | { | |
304 | struct ivtv *itv = s->itv; | |
305 | struct ivtv_buffer *buf; | |
1a0adaf3 HV |
306 | u32 y_size = itv->params.height * itv->params.width; |
307 | u32 uv_offset = offset + IVTV_YUV_BUFFER_UV_OFFSET; | |
308 | int y_done = 0; | |
309 | int bytes_written = 0; | |
310 | unsigned long flags = 0; | |
311 | int idx = 0; | |
312 | ||
bd58df6d | 313 | IVTV_DEBUG_HI_DMA("DEC PREPARE DMA %s: %08x %08x\n", s->name, s->q_predma.bytesused, offset); |
805a4392 | 314 | list_for_each_entry(buf, &s->q_predma.list, list) { |
1a0adaf3 | 315 | /* YUV UV Offset from Y Buffer */ |
c240ad00 IA |
316 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && !y_done && |
317 | (bytes_written + buf->bytesused) >= y_size) { | |
318 | s->sg_pending[idx].src = buf->dma_handle; | |
319 | s->sg_pending[idx].dst = offset; | |
320 | s->sg_pending[idx].size = y_size - bytes_written; | |
1a0adaf3 | 321 | offset = uv_offset; |
c240ad00 IA |
322 | if (s->sg_pending[idx].size != buf->bytesused) { |
323 | idx++; | |
324 | s->sg_pending[idx].src = | |
325 | buf->dma_handle + s->sg_pending[idx - 1].size; | |
326 | s->sg_pending[idx].dst = offset; | |
327 | s->sg_pending[idx].size = | |
328 | buf->bytesused - s->sg_pending[idx - 1].size; | |
329 | offset += s->sg_pending[idx].size; | |
330 | } | |
1a0adaf3 | 331 | y_done = 1; |
c240ad00 IA |
332 | } else { |
333 | s->sg_pending[idx].src = buf->dma_handle; | |
334 | s->sg_pending[idx].dst = offset; | |
335 | s->sg_pending[idx].size = buf->bytesused; | |
336 | offset += buf->bytesused; | |
1a0adaf3 | 337 | } |
1a0adaf3 HV |
338 | bytes_written += buf->bytesused; |
339 | ||
340 | /* Sync SG buffers */ | |
341 | ivtv_buf_sync_for_device(s, buf); | |
342 | idx++; | |
343 | } | |
37093b1e | 344 | s->sg_pending_size = idx; |
1a0adaf3 HV |
345 | |
346 | /* Sync Hardware SG List of buffers */ | |
347 | ivtv_stream_sync_for_device(s); | |
348 | if (lock) | |
349 | spin_lock_irqsave(&itv->dma_reg_lock, flags); | |
350 | if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) { | |
351 | ivtv_dma_dec_start(s); | |
352 | } | |
353 | else { | |
354 | set_bit(IVTV_F_S_DMA_PENDING, &s->s_flags); | |
355 | } | |
356 | if (lock) | |
357 | spin_unlock_irqrestore(&itv->dma_reg_lock, flags); | |
358 | } | |
359 | ||
37093b1e HV |
360 | static void ivtv_dma_enc_start_xfer(struct ivtv_stream *s) |
361 | { | |
362 | struct ivtv *itv = s->itv; | |
363 | ||
364 | s->sg_dma->src = cpu_to_le32(s->sg_processing[s->sg_processed].src); | |
365 | s->sg_dma->dst = cpu_to_le32(s->sg_processing[s->sg_processed].dst); | |
366 | s->sg_dma->size = cpu_to_le32(s->sg_processing[s->sg_processed].size | 0x80000000); | |
367 | s->sg_processed++; | |
368 | /* Sync Hardware SG List of buffers */ | |
369 | ivtv_stream_sync_for_device(s); | |
370 | write_reg(s->sg_handle, IVTV_REG_ENCDMAADDR); | |
371 | write_reg_sync(read_reg(IVTV_REG_DMAXFER) | 0x02, IVTV_REG_DMAXFER); | |
372 | } | |
373 | ||
374 | static void ivtv_dma_dec_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_DECDMAADDR); | |
385 | write_reg_sync(read_reg(IVTV_REG_DMAXFER) | 0x01, IVTV_REG_DMAXFER); | |
386 | } | |
387 | ||
1a0adaf3 HV |
388 | /* start the encoder DMA */ |
389 | static void ivtv_dma_enc_start(struct ivtv_stream *s) | |
390 | { | |
391 | struct ivtv *itv = s->itv; | |
392 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
393 | int i; | |
394 | ||
bd58df6d | 395 | IVTV_DEBUG_HI_DMA("start %s for %s\n", ivtv_use_dma(s) ? "DMA" : "PIO", s->name); |
dc02d50a | 396 | |
1a0adaf3 HV |
397 | if (s->q_predma.bytesused) |
398 | ivtv_queue_move(s, &s->q_predma, NULL, &s->q_dma, s->q_predma.bytesused); | |
dc02d50a HV |
399 | |
400 | if (ivtv_use_dma(s)) | |
37093b1e | 401 | s->sg_pending[s->sg_pending_size - 1].size += 256; |
1a0adaf3 HV |
402 | |
403 | /* If this is an MPEG stream, and VBI data is also pending, then append the | |
404 | VBI DMA to the MPEG DMA and transfer both sets of data at once. | |
405 | ||
406 | VBI DMA is a second class citizen compared to MPEG and mixing them together | |
407 | will confuse the firmware (the end of a VBI DMA is seen as the end of a | |
408 | MPEG DMA, thus effectively dropping an MPEG frame). So instead we make | |
409 | sure we only use the MPEG DMA to transfer the VBI DMA if both are in | |
410 | use. This way no conflicts occur. */ | |
411 | clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags); | |
37093b1e HV |
412 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && s_vbi->sg_pending_size && |
413 | s->sg_pending_size + s_vbi->sg_pending_size <= s->buffers) { | |
1a0adaf3 | 414 | ivtv_queue_move(s_vbi, &s_vbi->q_predma, NULL, &s_vbi->q_dma, s_vbi->q_predma.bytesused); |
dc02d50a | 415 | if (ivtv_use_dma(s_vbi)) |
37093b1e HV |
416 | s_vbi->sg_pending[s_vbi->sg_pending_size - 1].size += 256; |
417 | for (i = 0; i < s_vbi->sg_pending_size; i++) { | |
418 | s->sg_pending[s->sg_pending_size++] = s_vbi->sg_pending[i]; | |
1a0adaf3 | 419 | } |
37093b1e HV |
420 | s_vbi->dma_offset = s_vbi->pending_offset; |
421 | s_vbi->sg_pending_size = 0; | |
f4071b85 | 422 | s_vbi->dma_xfer_cnt++; |
1a0adaf3 | 423 | set_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags); |
bd58df6d | 424 | IVTV_DEBUG_HI_DMA("include DMA for %s\n", s->name); |
1a0adaf3 HV |
425 | } |
426 | ||
f4071b85 | 427 | s->dma_xfer_cnt++; |
37093b1e HV |
428 | memcpy(s->sg_processing, s->sg_pending, sizeof(struct ivtv_sg_element) * s->sg_pending_size); |
429 | s->sg_processing_size = s->sg_pending_size; | |
430 | s->sg_pending_size = 0; | |
431 | s->sg_processed = 0; | |
432 | s->dma_offset = s->pending_offset; | |
433 | s->dma_backup = s->pending_backup; | |
434 | s->dma_pts = s->pending_pts; | |
dd1e729d | 435 | |
dc02d50a | 436 | if (ivtv_use_pio(s)) { |
dc02d50a HV |
437 | set_bit(IVTV_F_I_WORK_HANDLER_PIO, &itv->i_flags); |
438 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); | |
439 | set_bit(IVTV_F_I_PIO, &itv->i_flags); | |
440 | itv->cur_pio_stream = s->type; | |
441 | } | |
442 | else { | |
37093b1e HV |
443 | itv->dma_retries = 0; |
444 | ivtv_dma_enc_start_xfer(s); | |
dc02d50a HV |
445 | set_bit(IVTV_F_I_DMA, &itv->i_flags); |
446 | itv->cur_dma_stream = s->type; | |
201700d3 | 447 | itv->dma_timer.expires = jiffies + msecs_to_jiffies(100); |
dc02d50a HV |
448 | add_timer(&itv->dma_timer); |
449 | } | |
1a0adaf3 HV |
450 | } |
451 | ||
452 | static void ivtv_dma_dec_start(struct ivtv_stream *s) | |
453 | { | |
454 | struct ivtv *itv = s->itv; | |
455 | ||
456 | if (s->q_predma.bytesused) | |
457 | ivtv_queue_move(s, &s->q_predma, NULL, &s->q_dma, s->q_predma.bytesused); | |
37093b1e HV |
458 | s->dma_xfer_cnt++; |
459 | memcpy(s->sg_processing, s->sg_pending, sizeof(struct ivtv_sg_element) * s->sg_pending_size); | |
460 | s->sg_processing_size = s->sg_pending_size; | |
461 | s->sg_pending_size = 0; | |
462 | s->sg_processed = 0; | |
463 | ||
bd58df6d | 464 | IVTV_DEBUG_HI_DMA("start DMA for %s\n", s->name); |
37093b1e HV |
465 | itv->dma_retries = 0; |
466 | ivtv_dma_dec_start_xfer(s); | |
1a0adaf3 HV |
467 | set_bit(IVTV_F_I_DMA, &itv->i_flags); |
468 | itv->cur_dma_stream = s->type; | |
201700d3 | 469 | itv->dma_timer.expires = jiffies + msecs_to_jiffies(100); |
1a0adaf3 HV |
470 | add_timer(&itv->dma_timer); |
471 | } | |
472 | ||
473 | static void ivtv_irq_dma_read(struct ivtv *itv) | |
474 | { | |
475 | struct ivtv_stream *s = NULL; | |
476 | struct ivtv_buffer *buf; | |
37093b1e | 477 | int hw_stream_type = 0; |
1a0adaf3 | 478 | |
bd58df6d | 479 | IVTV_DEBUG_HI_IRQ("DEC DMA READ\n"); |
37093b1e HV |
480 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags) && itv->cur_dma_stream < 0) { |
481 | del_timer(&itv->dma_timer); | |
482 | return; | |
1a0adaf3 | 483 | } |
37093b1e | 484 | |
1a0adaf3 | 485 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { |
37093b1e HV |
486 | s = &itv->streams[itv->cur_dma_stream]; |
487 | ivtv_stream_sync_for_cpu(s); | |
488 | ||
489 | if (read_reg(IVTV_REG_DMASTATUS) & 0x14) { | |
490 | IVTV_DEBUG_WARN("DEC DMA ERROR %x (xfer %d of %d, retry %d)\n", | |
491 | read_reg(IVTV_REG_DMASTATUS), | |
492 | s->sg_processed, s->sg_processing_size, itv->dma_retries); | |
493 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); | |
494 | if (itv->dma_retries == 3) { | |
e17a06ba | 495 | /* Too many retries, give up on this frame */ |
37093b1e | 496 | itv->dma_retries = 0; |
e17a06ba | 497 | s->sg_processed = s->sg_processing_size; |
37093b1e HV |
498 | } |
499 | else { | |
500 | /* Retry, starting with the first xfer segment. | |
501 | Just retrying the current segment is not sufficient. */ | |
502 | s->sg_processed = 0; | |
503 | itv->dma_retries++; | |
504 | } | |
1a0adaf3 | 505 | } |
37093b1e HV |
506 | if (s->sg_processed < s->sg_processing_size) { |
507 | /* DMA next buffer */ | |
508 | ivtv_dma_dec_start_xfer(s); | |
509 | return; | |
1a0adaf3 | 510 | } |
37093b1e HV |
511 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) |
512 | hw_stream_type = 2; | |
bd58df6d | 513 | IVTV_DEBUG_HI_DMA("DEC DATA READ %s: %d\n", s->name, s->q_dma.bytesused); |
1a0adaf3 | 514 | |
1a0adaf3 HV |
515 | /* For some reason must kick the firmware, like PIO mode, |
516 | I think this tells the firmware we are done and the size | |
517 | of the xfer so it can calculate what we need next. | |
518 | I think we can do this part ourselves but would have to | |
519 | fully calculate xfer info ourselves and not use interrupts | |
520 | */ | |
521 | ivtv_vapi(itv, CX2341X_DEC_SCHED_DMA_FROM_HOST, 3, 0, s->q_dma.bytesused, | |
522 | hw_stream_type); | |
523 | ||
524 | /* Free last DMA call */ | |
525 | while ((buf = ivtv_dequeue(s, &s->q_dma)) != NULL) { | |
526 | ivtv_buf_sync_for_cpu(s, buf); | |
527 | ivtv_enqueue(s, buf, &s->q_free); | |
528 | } | |
529 | wake_up(&s->waitq); | |
530 | } | |
37093b1e | 531 | del_timer(&itv->dma_timer); |
1a0adaf3 HV |
532 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); |
533 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
534 | itv->cur_dma_stream = -1; | |
535 | wake_up(&itv->dma_waitq); | |
536 | } | |
537 | ||
538 | static void ivtv_irq_enc_dma_complete(struct ivtv *itv) | |
539 | { | |
540 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
541 | struct ivtv_stream *s; | |
542 | ||
1a0adaf3 | 543 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA_END, data); |
37093b1e HV |
544 | IVTV_DEBUG_HI_IRQ("ENC DMA COMPLETE %x %d (%d)\n", data[0], data[1], itv->cur_dma_stream); |
545 | if (itv->cur_dma_stream < 0) { | |
546 | del_timer(&itv->dma_timer); | |
1a0adaf3 | 547 | return; |
37093b1e HV |
548 | } |
549 | s = &itv->streams[itv->cur_dma_stream]; | |
550 | ivtv_stream_sync_for_cpu(s); | |
551 | ||
1a0adaf3 | 552 | if (data[0] & 0x18) { |
37093b1e HV |
553 | IVTV_DEBUG_WARN("ENC DMA ERROR %x (offset %08x, xfer %d of %d, retry %d)\n", data[0], |
554 | s->dma_offset, s->sg_processed, s->sg_processing_size, itv->dma_retries); | |
1a0adaf3 | 555 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); |
37093b1e | 556 | if (itv->dma_retries == 3) { |
e17a06ba | 557 | /* Too many retries, give up on this frame */ |
37093b1e | 558 | itv->dma_retries = 0; |
e17a06ba | 559 | s->sg_processed = s->sg_processing_size; |
37093b1e HV |
560 | } |
561 | else { | |
562 | /* Retry, starting with the first xfer segment. | |
563 | Just retrying the current segment is not sufficient. */ | |
564 | s->sg_processed = 0; | |
565 | itv->dma_retries++; | |
566 | } | |
1a0adaf3 | 567 | } |
37093b1e HV |
568 | if (s->sg_processed < s->sg_processing_size) { |
569 | /* DMA next buffer */ | |
570 | ivtv_dma_enc_start_xfer(s); | |
571 | return; | |
572 | } | |
573 | del_timer(&itv->dma_timer); | |
1a0adaf3 HV |
574 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); |
575 | itv->cur_dma_stream = -1; | |
576 | dma_post(s); | |
1a0adaf3 | 577 | if (test_and_clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags)) { |
1a0adaf3 | 578 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
1a0adaf3 | 579 | dma_post(s); |
1a0adaf3 | 580 | } |
37093b1e HV |
581 | s->sg_processing_size = 0; |
582 | s->sg_processed = 0; | |
1a0adaf3 HV |
583 | wake_up(&itv->dma_waitq); |
584 | } | |
585 | ||
dc02d50a HV |
586 | static void ivtv_irq_enc_pio_complete(struct ivtv *itv) |
587 | { | |
588 | struct ivtv_stream *s; | |
589 | ||
590 | if (itv->cur_pio_stream < 0 || itv->cur_pio_stream >= IVTV_MAX_STREAMS) { | |
591 | itv->cur_pio_stream = -1; | |
592 | return; | |
593 | } | |
594 | s = &itv->streams[itv->cur_pio_stream]; | |
bd58df6d | 595 | IVTV_DEBUG_HI_IRQ("ENC PIO COMPLETE %s\n", s->name); |
dc02d50a HV |
596 | clear_bit(IVTV_F_I_PIO, &itv->i_flags); |
597 | itv->cur_pio_stream = -1; | |
598 | dma_post(s); | |
599 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
600 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 0); | |
601 | else if (s->type == IVTV_ENC_STREAM_TYPE_YUV) | |
602 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 1); | |
603 | else if (s->type == IVTV_ENC_STREAM_TYPE_PCM) | |
604 | ivtv_vapi(itv, CX2341X_ENC_SCHED_DMA_TO_HOST, 3, 0, 0, 2); | |
605 | clear_bit(IVTV_F_I_PIO, &itv->i_flags); | |
606 | if (test_and_clear_bit(IVTV_F_S_DMA_HAS_VBI, &s->s_flags)) { | |
dc02d50a | 607 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
dc02d50a | 608 | dma_post(s); |
dc02d50a HV |
609 | } |
610 | wake_up(&itv->dma_waitq); | |
611 | } | |
612 | ||
1a0adaf3 HV |
613 | static void ivtv_irq_dma_err(struct ivtv *itv) |
614 | { | |
615 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
616 | ||
617 | del_timer(&itv->dma_timer); | |
618 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA_END, data); | |
619 | IVTV_DEBUG_WARN("DMA ERROR %08x %08x %08x %d\n", data[0], data[1], | |
37093b1e HV |
620 | read_reg(IVTV_REG_DMASTATUS), itv->cur_dma_stream); |
621 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); | |
1a0adaf3 HV |
622 | if (!test_bit(IVTV_F_I_UDMA, &itv->i_flags) && |
623 | itv->cur_dma_stream >= 0 && itv->cur_dma_stream < IVTV_MAX_STREAMS) { | |
624 | struct ivtv_stream *s = &itv->streams[itv->cur_dma_stream]; | |
625 | ||
626 | /* retry */ | |
1a0adaf3 HV |
627 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) |
628 | ivtv_dma_dec_start(s); | |
629 | else | |
630 | ivtv_dma_enc_start(s); | |
631 | return; | |
632 | } | |
37093b1e HV |
633 | if (test_bit(IVTV_F_I_UDMA, &itv->i_flags)) { |
634 | ivtv_udma_start(itv); | |
635 | return; | |
636 | } | |
1a0adaf3 HV |
637 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); |
638 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
639 | itv->cur_dma_stream = -1; | |
640 | wake_up(&itv->dma_waitq); | |
641 | } | |
642 | ||
643 | static void ivtv_irq_enc_start_cap(struct ivtv *itv) | |
644 | { | |
645 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
646 | struct ivtv_stream *s; | |
647 | ||
648 | /* Get DMA destination and size arguments from card */ | |
649 | ivtv_api_get_data(&itv->enc_mbox, IVTV_MBOX_DMA, data); | |
bd58df6d | 650 | IVTV_DEBUG_HI_IRQ("ENC START CAP %d: %08x %08x\n", data[0], data[1], data[2]); |
1a0adaf3 HV |
651 | |
652 | if (data[0] > 2 || data[1] == 0 || data[2] == 0) { | |
653 | IVTV_DEBUG_WARN("Unknown input: %08x %08x %08x\n", | |
654 | data[0], data[1], data[2]); | |
655 | return; | |
656 | } | |
1a0adaf3 HV |
657 | s = &itv->streams[ivtv_stream_map[data[0]]]; |
658 | if (!stream_enc_dma_append(s, data)) { | |
dc02d50a | 659 | set_bit(ivtv_use_pio(s) ? IVTV_F_S_PIO_PENDING : IVTV_F_S_DMA_PENDING, &s->s_flags); |
1a0adaf3 HV |
660 | } |
661 | } | |
662 | ||
663 | static void ivtv_irq_enc_vbi_cap(struct ivtv *itv) | |
664 | { | |
665 | struct ivtv_stream *s_mpg = &itv->streams[IVTV_ENC_STREAM_TYPE_MPG]; | |
666 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
667 | struct ivtv_stream *s; | |
668 | ||
bd58df6d | 669 | IVTV_DEBUG_HI_IRQ("ENC START VBI CAP\n"); |
1a0adaf3 HV |
670 | s = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; |
671 | ||
1a0adaf3 HV |
672 | /* If more than two VBI buffers are pending, then |
673 | clear the old ones and start with this new one. | |
674 | This can happen during transition stages when MPEG capturing is | |
675 | started, but the first interrupts haven't arrived yet. During | |
676 | that period VBI requests can accumulate without being able to | |
677 | DMA the data. Since at most four VBI DMA buffers are available, | |
678 | we just drop the old requests when there are already three | |
679 | requests queued. */ | |
37093b1e | 680 | if (s->sg_pending_size > 2) { |
805a4392 TP |
681 | struct ivtv_buffer *buf; |
682 | list_for_each_entry(buf, &s->q_predma.list, list) | |
1a0adaf3 | 683 | ivtv_buf_sync_for_cpu(s, buf); |
1a0adaf3 | 684 | ivtv_queue_move(s, &s->q_predma, NULL, &s->q_free, 0); |
37093b1e | 685 | s->sg_pending_size = 0; |
1a0adaf3 HV |
686 | } |
687 | /* if we can append the data, and the MPEG stream isn't capturing, | |
688 | then start a DMA request for just the VBI data. */ | |
689 | if (!stream_enc_dma_append(s, data) && | |
690 | !test_bit(IVTV_F_S_STREAMING, &s_mpg->s_flags)) { | |
dc02d50a | 691 | set_bit(ivtv_use_pio(s) ? IVTV_F_S_PIO_PENDING : IVTV_F_S_DMA_PENDING, &s->s_flags); |
1a0adaf3 HV |
692 | } |
693 | } | |
694 | ||
dc02d50a | 695 | static void ivtv_irq_dec_vbi_reinsert(struct ivtv *itv) |
1a0adaf3 HV |
696 | { |
697 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
698 | struct ivtv_stream *s = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
699 | ||
bd58df6d | 700 | IVTV_DEBUG_HI_IRQ("DEC VBI REINSERT\n"); |
1a0adaf3 HV |
701 | if (test_bit(IVTV_F_S_CLAIMED, &s->s_flags) && |
702 | !stream_enc_dma_append(s, data)) { | |
dc02d50a | 703 | set_bit(IVTV_F_S_PIO_PENDING, &s->s_flags); |
1a0adaf3 HV |
704 | } |
705 | } | |
706 | ||
707 | static void ivtv_irq_dec_data_req(struct ivtv *itv) | |
708 | { | |
709 | u32 data[CX2341X_MBOX_MAX_DATA]; | |
710 | struct ivtv_stream *s; | |
711 | ||
712 | /* YUV or MPG */ | |
713 | ivtv_api_get_data(&itv->dec_mbox, IVTV_MBOX_DMA, data); | |
714 | ||
715 | if (test_bit(IVTV_F_I_DEC_YUV, &itv->i_flags)) { | |
716 | itv->dma_data_req_size = itv->params.width * itv->params.height * 3 / 2; | |
717 | itv->dma_data_req_offset = data[1] ? data[1] : yuv_offset[0]; | |
718 | s = &itv->streams[IVTV_DEC_STREAM_TYPE_YUV]; | |
719 | } | |
720 | else { | |
721 | itv->dma_data_req_size = data[2] >= 0x10000 ? 0x10000 : data[2]; | |
722 | itv->dma_data_req_offset = data[1]; | |
723 | s = &itv->streams[IVTV_DEC_STREAM_TYPE_MPG]; | |
724 | } | |
bd58df6d | 725 | IVTV_DEBUG_HI_IRQ("DEC DATA REQ %s: %d %08x %u\n", s->name, s->q_full.bytesused, |
1a0adaf3 HV |
726 | itv->dma_data_req_offset, itv->dma_data_req_size); |
727 | if (itv->dma_data_req_size == 0 || s->q_full.bytesused < itv->dma_data_req_size) { | |
728 | set_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
729 | } | |
730 | else { | |
731 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
732 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
733 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 0); | |
734 | } | |
735 | } | |
736 | ||
737 | static void ivtv_irq_vsync(struct ivtv *itv) | |
738 | { | |
739 | /* The vsync interrupt is unusual in that it won't clear until | |
740 | * the end of the first line for the current field, at which | |
741 | * point it clears itself. This can result in repeated vsync | |
742 | * interrupts, or a missed vsync. Read some of the registers | |
743 | * to determine the line being displayed and ensure we handle | |
744 | * one vsync per frame. | |
745 | */ | |
746 | unsigned int frame = read_reg(0x28c0) & 1; | |
a3e5f5e2 | 747 | struct yuv_playback_info *yi = &itv->yuv_info; |
1a0adaf3 HV |
748 | int last_dma_frame = atomic_read(&itv->yuv_info.next_dma_frame); |
749 | ||
750 | if (0) IVTV_DEBUG_IRQ("DEC VSYNC\n"); | |
751 | ||
a3e5f5e2 IA |
752 | if (((frame ^ yi->sync_field[last_dma_frame]) == 0 && |
753 | ((itv->last_vsync_field & 1) ^ yi->sync_field[last_dma_frame])) || | |
754 | (frame != (itv->last_vsync_field & 1) && !yi->frame_interlaced)) { | |
1a0adaf3 HV |
755 | int next_dma_frame = last_dma_frame; |
756 | ||
a3e5f5e2 IA |
757 | if (!(yi->frame_interlaced && yi->field_delay[next_dma_frame] && yi->fields_lapsed < 1)) { |
758 | if (next_dma_frame >= 0 && next_dma_frame != atomic_read(&yi->next_fill_frame)) { | |
bfd7beac IA |
759 | write_reg(yuv_offset[next_dma_frame] >> 4, 0x82c); |
760 | write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x830); | |
761 | write_reg(yuv_offset[next_dma_frame] >> 4, 0x834); | |
762 | write_reg((yuv_offset[next_dma_frame] + IVTV_YUV_BUFFER_UV_OFFSET) >> 4, 0x838); | |
a3e5f5e2 IA |
763 | next_dma_frame = (next_dma_frame + 1) % IVTV_YUV_BUFFERS; |
764 | atomic_set(&yi->next_dma_frame, next_dma_frame); | |
765 | yi->fields_lapsed = -1; | |
bfd7beac | 766 | } |
1a0adaf3 HV |
767 | } |
768 | } | |
a158f355 | 769 | if (frame != (itv->last_vsync_field & 1)) { |
1a0adaf3 HV |
770 | struct ivtv_stream *s = ivtv_get_output_stream(itv); |
771 | ||
a158f355 | 772 | itv->last_vsync_field += 1; |
1a0adaf3 HV |
773 | if (frame == 0) { |
774 | clear_bit(IVTV_F_I_VALID_DEC_TIMINGS, &itv->i_flags); | |
775 | clear_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags); | |
776 | } | |
777 | else { | |
778 | set_bit(IVTV_F_I_EV_VSYNC_FIELD, &itv->i_flags); | |
779 | } | |
780 | if (test_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags)) { | |
781 | set_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags); | |
782 | wake_up(&itv->event_waitq); | |
783 | } | |
784 | wake_up(&itv->vsync_waitq); | |
785 | if (s) | |
786 | wake_up(&s->waitq); | |
787 | ||
788 | /* Send VBI to saa7127 */ | |
2f3a9893 HV |
789 | if (frame && (itv->output_mode == OUT_PASSTHROUGH || |
790 | test_bit(IVTV_F_I_UPDATE_WSS, &itv->i_flags) || | |
791 | test_bit(IVTV_F_I_UPDATE_VPS, &itv->i_flags) || | |
792 | test_bit(IVTV_F_I_UPDATE_CC, &itv->i_flags))) { | |
1e13f9e3 | 793 | set_bit(IVTV_F_I_WORK_HANDLER_VBI, &itv->i_flags); |
dc02d50a | 794 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); |
1e13f9e3 | 795 | } |
1a0adaf3 HV |
796 | |
797 | /* Check if we need to update the yuv registers */ | |
a3e5f5e2 IA |
798 | if ((yi->yuv_forced_update || yi->new_frame_info[last_dma_frame].update) && last_dma_frame != -1) { |
799 | if (!yi->new_frame_info[last_dma_frame].update) | |
1a0adaf3 HV |
800 | last_dma_frame = (last_dma_frame - 1) & 3; |
801 | ||
a3e5f5e2 IA |
802 | if (yi->new_frame_info[last_dma_frame].src_w) { |
803 | yi->update_frame = last_dma_frame; | |
804 | yi->new_frame_info[last_dma_frame].update = 0; | |
805 | yi->yuv_forced_update = 0; | |
1e13f9e3 | 806 | set_bit(IVTV_F_I_WORK_HANDLER_YUV, &itv->i_flags); |
dc02d50a | 807 | set_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags); |
1a0adaf3 HV |
808 | } |
809 | } | |
bfd7beac | 810 | |
a3e5f5e2 | 811 | yi->fields_lapsed++; |
1a0adaf3 HV |
812 | } |
813 | } | |
814 | ||
2f3a9893 | 815 | #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 |
816 | |
817 | irqreturn_t ivtv_irq_handler(int irq, void *dev_id) | |
818 | { | |
819 | struct ivtv *itv = (struct ivtv *)dev_id; | |
820 | u32 combo; | |
821 | u32 stat; | |
822 | int i; | |
823 | u8 vsync_force = 0; | |
824 | ||
825 | spin_lock(&itv->dma_reg_lock); | |
826 | /* get contents of irq status register */ | |
827 | stat = read_reg(IVTV_REG_IRQSTATUS); | |
828 | ||
829 | combo = ~itv->irqmask & stat; | |
830 | ||
831 | /* Clear out IRQ */ | |
832 | if (combo) write_reg(combo, IVTV_REG_IRQSTATUS); | |
833 | ||
834 | if (0 == combo) { | |
835 | /* The vsync interrupt is unusual and clears itself. If we | |
836 | * took too long, we may have missed it. Do some checks | |
837 | */ | |
838 | if (~itv->irqmask & IVTV_IRQ_DEC_VSYNC) { | |
839 | /* vsync is enabled, see if we're in a new field */ | |
a158f355 | 840 | if ((itv->last_vsync_field & 1) != (read_reg(0x28c0) & 1)) { |
1a0adaf3 HV |
841 | /* New field, looks like we missed it */ |
842 | IVTV_DEBUG_YUV("VSync interrupt missed %d\n",read_reg(0x28c0)>>16); | |
843 | vsync_force = 1; | |
844 | } | |
845 | } | |
846 | ||
847 | if (!vsync_force) { | |
848 | /* No Vsync expected, wasn't for us */ | |
849 | spin_unlock(&itv->dma_reg_lock); | |
850 | return IRQ_NONE; | |
851 | } | |
852 | } | |
853 | ||
854 | /* Exclude interrupts noted below from the output, otherwise the log is flooded with | |
855 | these messages */ | |
856 | if (combo & ~0xff6d0400) | |
bd58df6d | 857 | IVTV_DEBUG_HI_IRQ("======= valid IRQ bits: 0x%08x ======\n", combo); |
1a0adaf3 HV |
858 | |
859 | if (combo & IVTV_IRQ_DEC_DMA_COMPLETE) { | |
bd58df6d | 860 | IVTV_DEBUG_HI_IRQ("DEC DMA COMPLETE\n"); |
1a0adaf3 HV |
861 | } |
862 | ||
863 | if (combo & IVTV_IRQ_DMA_READ) { | |
864 | ivtv_irq_dma_read(itv); | |
865 | } | |
866 | ||
867 | if (combo & IVTV_IRQ_ENC_DMA_COMPLETE) { | |
868 | ivtv_irq_enc_dma_complete(itv); | |
869 | } | |
870 | ||
dc02d50a HV |
871 | if (combo & IVTV_IRQ_ENC_PIO_COMPLETE) { |
872 | ivtv_irq_enc_pio_complete(itv); | |
873 | } | |
874 | ||
1a0adaf3 HV |
875 | if (combo & IVTV_IRQ_DMA_ERR) { |
876 | ivtv_irq_dma_err(itv); | |
877 | } | |
878 | ||
879 | if (combo & IVTV_IRQ_ENC_START_CAP) { | |
880 | ivtv_irq_enc_start_cap(itv); | |
881 | } | |
882 | ||
883 | if (combo & IVTV_IRQ_ENC_VBI_CAP) { | |
884 | ivtv_irq_enc_vbi_cap(itv); | |
885 | } | |
886 | ||
887 | if (combo & IVTV_IRQ_DEC_VBI_RE_INSERT) { | |
dc02d50a | 888 | ivtv_irq_dec_vbi_reinsert(itv); |
1a0adaf3 HV |
889 | } |
890 | ||
891 | if (combo & IVTV_IRQ_ENC_EOS) { | |
892 | IVTV_DEBUG_IRQ("ENC EOS\n"); | |
893 | set_bit(IVTV_F_I_EOS, &itv->i_flags); | |
fd8b281a | 894 | wake_up(&itv->eos_waitq); |
1a0adaf3 HV |
895 | } |
896 | ||
897 | if (combo & IVTV_IRQ_DEC_DATA_REQ) { | |
898 | ivtv_irq_dec_data_req(itv); | |
899 | } | |
900 | ||
901 | /* Decoder Vertical Sync - We can't rely on 'combo', so check if vsync enabled */ | |
902 | if (~itv->irqmask & IVTV_IRQ_DEC_VSYNC) { | |
903 | ivtv_irq_vsync(itv); | |
904 | } | |
905 | ||
906 | if (combo & IVTV_IRQ_ENC_VIM_RST) { | |
907 | IVTV_DEBUG_IRQ("VIM RST\n"); | |
908 | /*ivtv_vapi(itv, CX2341X_ENC_REFRESH_INPUT, 0); */ | |
909 | } | |
910 | ||
911 | if (combo & IVTV_IRQ_DEC_AUD_MODE_CHG) { | |
912 | IVTV_DEBUG_INFO("Stereo mode changed\n"); | |
913 | } | |
914 | ||
915 | if ((combo & IVTV_IRQ_DMA) && !test_bit(IVTV_F_I_DMA, &itv->i_flags)) { | |
33bc4dea | 916 | itv->irq_rr_idx++; |
1a0adaf3 | 917 | for (i = 0; i < IVTV_MAX_STREAMS; i++) { |
33bc4dea | 918 | int idx = (i + itv->irq_rr_idx) % IVTV_MAX_STREAMS; |
1a0adaf3 HV |
919 | struct ivtv_stream *s = &itv->streams[idx]; |
920 | ||
921 | if (!test_and_clear_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) | |
922 | continue; | |
923 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) | |
924 | ivtv_dma_dec_start(s); | |
925 | else | |
926 | ivtv_dma_enc_start(s); | |
927 | break; | |
928 | } | |
929 | if (i == IVTV_MAX_STREAMS && test_and_clear_bit(IVTV_F_I_UDMA_PENDING, &itv->i_flags)) { | |
930 | ivtv_udma_start(itv); | |
931 | } | |
932 | } | |
933 | ||
dc02d50a | 934 | if ((combo & IVTV_IRQ_DMA) && !test_bit(IVTV_F_I_PIO, &itv->i_flags)) { |
33bc4dea | 935 | itv->irq_rr_idx++; |
dc02d50a | 936 | for (i = 0; i < IVTV_MAX_STREAMS; i++) { |
33bc4dea | 937 | int idx = (i + itv->irq_rr_idx) % IVTV_MAX_STREAMS; |
dc02d50a HV |
938 | struct ivtv_stream *s = &itv->streams[idx]; |
939 | ||
940 | if (!test_and_clear_bit(IVTV_F_S_PIO_PENDING, &s->s_flags)) | |
941 | continue; | |
942 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type < IVTV_DEC_STREAM_TYPE_MPG) | |
943 | ivtv_dma_enc_start(s); | |
944 | break; | |
945 | } | |
946 | } | |
947 | ||
2f3a9893 | 948 | if (test_and_clear_bit(IVTV_F_I_HAVE_WORK, &itv->i_flags)) { |
dc02d50a | 949 | queue_work(itv->irq_work_queues, &itv->irq_work_queue); |
2f3a9893 | 950 | } |
dc02d50a | 951 | |
1a0adaf3 HV |
952 | spin_unlock(&itv->dma_reg_lock); |
953 | ||
954 | /* If we've just handled a 'forced' vsync, it's safest to say it | |
955 | * wasn't ours. Another device may have triggered it at just | |
956 | * the right time. | |
957 | */ | |
958 | return vsync_force ? IRQ_NONE : IRQ_HANDLED; | |
959 | } | |
960 | ||
961 | void ivtv_unfinished_dma(unsigned long arg) | |
962 | { | |
963 | struct ivtv *itv = (struct ivtv *)arg; | |
964 | ||
965 | if (!test_bit(IVTV_F_I_DMA, &itv->i_flags)) | |
966 | return; | |
967 | IVTV_ERR("DMA TIMEOUT %08x %d\n", read_reg(IVTV_REG_DMASTATUS), itv->cur_dma_stream); | |
968 | ||
969 | write_reg(read_reg(IVTV_REG_DMASTATUS) & 3, IVTV_REG_DMASTATUS); | |
970 | clear_bit(IVTV_F_I_UDMA, &itv->i_flags); | |
971 | clear_bit(IVTV_F_I_DMA, &itv->i_flags); | |
972 | itv->cur_dma_stream = -1; | |
973 | wake_up(&itv->dma_waitq); | |
974 | } |