85 	struct cx23885_audio_buffer *buf = chip->buf;  in cx23885_alsa_dma_init()  local
89 	buf->vaddr = vmalloc_32(nr_pages << PAGE_SHIFT);  in cx23885_alsa_dma_init()
90 	if (NULL == buf->vaddr) {  in cx23885_alsa_dma_init()
96 				(unsigned long)buf->vaddr,  in cx23885_alsa_dma_init()
99 	memset(buf->vaddr, 0, nr_pages << PAGE_SHIFT);  in cx23885_alsa_dma_init()
100 	buf->nr_pages = nr_pages;  in cx23885_alsa_dma_init()
102 	buf->sglist = vzalloc(buf->nr_pages * sizeof(*buf->sglist));  in cx23885_alsa_dma_init()
103 	if (NULL == buf->sglist)  in cx23885_alsa_dma_init()
106 	sg_init_table(buf->sglist, buf->nr_pages);  in cx23885_alsa_dma_init()
107 	for (i = 0; i < buf->nr_pages; i++) {  in cx23885_alsa_dma_init()
108 		pg = vmalloc_to_page(buf->vaddr + i * PAGE_SIZE);  in cx23885_alsa_dma_init()
111 		sg_set_page(&buf->sglist[i], pg, PAGE_SIZE, 0);  in cx23885_alsa_dma_init()
116 	vfree(buf->sglist);  in cx23885_alsa_dma_init()
117 	buf->sglist = NULL;  in cx23885_alsa_dma_init()
119 	vfree(buf->vaddr);  in cx23885_alsa_dma_init()
120 	buf->vaddr = NULL;  in cx23885_alsa_dma_init()
126 	struct cx23885_audio_buffer *buf = dev->buf;  in cx23885_alsa_dma_map()  local
128 	buf->sglen = dma_map_sg(&dev->pci->dev, buf->sglist,  in cx23885_alsa_dma_map()
129 			buf->nr_pages, PCI_DMA_FROMDEVICE);  in cx23885_alsa_dma_map()
131 	if (0 == buf->sglen) {  in cx23885_alsa_dma_map()
140 	struct cx23885_audio_buffer *buf = dev->buf;  in cx23885_alsa_dma_unmap()  local
142 	if (!buf->sglen)  in cx23885_alsa_dma_unmap()
145 	dma_unmap_sg(&dev->pci->dev, buf->sglist, buf->sglen, PCI_DMA_FROMDEVICE);  in cx23885_alsa_dma_unmap()
146 	buf->sglen = 0;  in cx23885_alsa_dma_unmap()
150 static int cx23885_alsa_dma_free(struct cx23885_audio_buffer *buf)  in cx23885_alsa_dma_free()  argument
152 	vfree(buf->sglist);  in cx23885_alsa_dma_free()
153 	buf->sglist = NULL;  in cx23885_alsa_dma_free()
154 	vfree(buf->vaddr);  in cx23885_alsa_dma_free()
155 	buf->vaddr = NULL;  in cx23885_alsa_dma_free()
165 	struct cx23885_audio_buffer *buf = chip->buf;  in cx23885_start_audio_dma()  local
176 	cx23885_sram_channel_setup(chip->dev, audio_ch, buf->bpl,  in cx23885_start_audio_dma()
177 		buf->risc.dma);  in cx23885_start_audio_dma()
180 	cx_write(AUD_INT_A_LNGTH, buf->bpl);  in cx23885_start_audio_dma()
190 		"byte buffer\n", buf->bpl, cx_read(audio_ch->cmds_start+12)>>1,  in cx23885_start_audio_dma()
191 		chip->num_periods, buf->bpl * chip->num_periods);  in cx23885_start_audio_dma()
279 	cx23885_alsa_dma_free(chip->buf);  in dsp_buffer_free()
280 	risc = &chip->buf->risc;  in dsp_buffer_free()
282 	kfree(chip->buf);  in dsp_buffer_free()
284 	chip->buf = NULL;  in dsp_buffer_free()
375 	struct cx23885_audio_buffer *buf;  in snd_cx23885_hw_params()  local
390 	buf = kzalloc(sizeof(*buf), GFP_KERNEL);  in snd_cx23885_hw_params()
391 	if (NULL == buf)  in snd_cx23885_hw_params()
394 	buf->bpl = chip->period_size;  in snd_cx23885_hw_params()
395 	chip->buf = buf;  in snd_cx23885_hw_params()
406 	ret = cx23885_risc_databuffer(chip->pci, &buf->risc, buf->sglist,  in snd_cx23885_hw_params()
412 	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP|RISC_IRQ1|RISC_CNT_INC);  in snd_cx23885_hw_params()
413 	buf->risc.jmp[1] = cpu_to_le32(buf->risc.dma);  in snd_cx23885_hw_params()
414 	buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */  in snd_cx23885_hw_params()
416 	substream->runtime->dma_area = chip->buf->vaddr;  in snd_cx23885_hw_params()
423 	kfree(buf);  in snd_cx23885_hw_params()
424 	chip->buf = NULL;  in snd_cx23885_hw_params()