93 	struct cx25821_audio_buffer *buf;  member
149 	struct cx25821_audio_buffer *buf = chip->buf;  in cx25821_alsa_dma_init()  local
153 	buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);  in cx25821_alsa_dma_init()
154 	if (NULL == buf->vaddr) {  in cx25821_alsa_dma_init()
160 				(unsigned long)buf->vaddr,  in cx25821_alsa_dma_init()
163 	memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);  in cx25821_alsa_dma_init()
164 	buf->nr_pages = nr_pages;  in cx25821_alsa_dma_init()
166 	buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));  in cx25821_alsa_dma_init()
167 	if (NULL == buf->sglist)  in cx25821_alsa_dma_init()
170 	sg_init_table(buf->sglist, buf->nr_pages);  in cx25821_alsa_dma_init()
171 	for (i = 0; i < buf->nr_pages; i++) {  in cx25821_alsa_dma_init()
172 		pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);  in cx25821_alsa_dma_init()
175 		sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);  in cx25821_alsa_dma_init()
180 	vfree(buf->sglist);  in cx25821_alsa_dma_init()
181 	buf->sglist = NULL;  in cx25821_alsa_dma_init()
183 	vfree(buf->vaddr);  in cx25821_alsa_dma_init()
184 	buf->vaddr = NULL;  in cx25821_alsa_dma_init()
190 	struct cx25821_audio_buffer *buf = dev->buf;  in cx25821_alsa_dma_map()  local
192 	buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,  in cx25821_alsa_dma_map()
193 			buf->nr_pages, PCI_DMA_FROMDEVICE);  in cx25821_alsa_dma_map()
195 	if (0 == buf->sglen) {  in cx25821_alsa_dma_map()
204 	struct cx25821_audio_buffer *buf = dev->buf;  in cx25821_alsa_dma_unmap()  local
206 	if (!buf->sglen)  in cx25821_alsa_dma_unmap()
209 	dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen, PCI_DMA_FROMDEVICE);  in cx25821_alsa_dma_unmap()
210 	buf->sglen = 0;  in cx25821_alsa_dma_unmap()
214 static int cx25821_alsa_dma_free(struct cx25821_audio_buffer *buf)  in cx25821_alsa_dma_free()  argument
216 	vfree(buf->sglist);  in cx25821_alsa_dma_free()
217 	buf->sglist = NULL;  in cx25821_alsa_dma_free()
218 	vfree(buf->vaddr);  in cx25821_alsa_dma_free()
219 	buf->vaddr = NULL;  in cx25821_alsa_dma_free()
229 	struct cx25821_audio_buffer *buf = chip->buf;  in _cx25821_start_audio_dma()  local
243 	cx25821_sram_channel_setup_audio(chip->dev, audio_ch, buf->bpl,  in _cx25821_start_audio_dma()
244 					 buf->risc.dma);  in _cx25821_start_audio_dma()
247 	cx_write(AUD_A_LNGTH, buf->bpl);  in _cx25821_start_audio_dma()
411 	struct cx25821_riscmem *risc = &chip->buf->risc;  in dsp_buffer_free()
417 	cx25821_alsa_dma_free(chip->buf);  in dsp_buffer_free()
419 	kfree(chip->buf);  in dsp_buffer_free()
421 	chip->buf = NULL;  in dsp_buffer_free()
513 	struct cx25821_audio_buffer *buf;  in snd_cx25821_hw_params()  local
528 	buf = kzalloc(sizeof(*buf), GFP_KERNEL);  in snd_cx25821_hw_params()
529 	if (NULL == buf)  in snd_cx25821_hw_params()
535 	buf->bpl = chip->period_size;  in snd_cx25821_hw_params()
536 	chip->buf = buf;  in snd_cx25821_hw_params()
547 	ret = cx25821_risc_databuffer_audio(chip->pci, &buf->risc, buf->sglist,  in snd_cx25821_hw_params()
555 	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);  in snd_cx25821_hw_params()
556 	buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);  in snd_cx25821_hw_params()
557 	buf->risc.jmp[2] = cpu_to_le32(0);	/* bits 63-32 */  in snd_cx25821_hw_params()
559 	substream->runtime->dma_area = chip->buf->vaddr;  in snd_cx25821_hw_params()
566 	chip->buf = NULL;  in snd_cx25821_hw_params()
567 	kfree(buf);  in snd_cx25821_hw_params()