33 int pt3_stop_dma(struct pt3_adapter *adap)  in pt3_stop_dma()  argument
35 	struct pt3_board *pt3 = adap->dvb_adap.priv;  in pt3_stop_dma()
40 	base = get_dma_base(adap->adap_idx);  in pt3_stop_dma()
55 int pt3_start_dma(struct pt3_adapter *adap)  in pt3_start_dma()  argument
57 	struct pt3_board *pt3 = adap->dvb_adap.priv;  in pt3_start_dma()
58 	u32 base = get_dma_base(adap->adap_idx);  in pt3_start_dma()
61 	iowrite32(lower_32_bits(adap->desc_buf[0].b_addr),  in pt3_start_dma()
63 	iowrite32(upper_32_bits(adap->desc_buf[0].b_addr),  in pt3_start_dma()
70 static u8 *next_unit(struct pt3_adapter *adap, int *idx, int *ofs)  in next_unit()  argument
76 		if (*idx == adap->num_bufs)  in next_unit()
79 	return &adap->buffer[*idx].data[*ofs];  in next_unit()
82 int pt3_proc_dma(struct pt3_adapter *adap)  in pt3_proc_dma()  argument
86 	idx = adap->buf_idx;  in pt3_proc_dma()
87 	ofs = adap->buf_ofs;  in pt3_proc_dma()
89 	if (adap->buffer[idx].data[ofs] == PT3_BUF_CANARY)  in pt3_proc_dma()
92 	while (*next_unit(adap, &idx, &ofs) != PT3_BUF_CANARY) {  in pt3_proc_dma()
95 		p = &adap->buffer[adap->buf_idx].data[adap->buf_ofs];  in pt3_proc_dma()
96 		if (adap->num_discard > 0)  in pt3_proc_dma()
97 			adap->num_discard--;  in pt3_proc_dma()
98 		else if (adap->buf_ofs + PT3_ACCESS_UNIT > DATA_BUF_SZ) {  in pt3_proc_dma()
99 			dvb_dmx_swfilter_packets(&adap->demux, p,  in pt3_proc_dma()
100 				(DATA_BUF_SZ - adap->buf_ofs) / TS_PACKET_SZ);  in pt3_proc_dma()
101 			dvb_dmx_swfilter_packets(&adap->demux,  in pt3_proc_dma()
102 				adap->buffer[idx].data, ofs / TS_PACKET_SZ);  in pt3_proc_dma()
104 			dvb_dmx_swfilter_packets(&adap->demux, p,  in pt3_proc_dma()
108 		adap->buf_idx = idx;  in pt3_proc_dma()
109 		adap->buf_ofs = ofs;  in pt3_proc_dma()
114 void pt3_init_dmabuf(struct pt3_adapter *adap)  in pt3_init_dmabuf()  argument
121 	p = adap->buffer[0].data;  in pt3_init_dmabuf()
123 	while (idx < adap->num_bufs) {  in pt3_init_dmabuf()
129 			p = adap->buffer[idx].data;  in pt3_init_dmabuf()
132 	adap->buf_idx = 0;  in pt3_init_dmabuf()
133 	adap->buf_ofs = 0;  in pt3_init_dmabuf()
136 void pt3_free_dmabuf(struct pt3_adapter *adap)  in pt3_free_dmabuf()  argument
141 	pt3 = adap->dvb_adap.priv;  in pt3_free_dmabuf()
142 	for (i = 0; i < adap->num_bufs; i++)  in pt3_free_dmabuf()
144 			adap->buffer[i].data, adap->buffer[i].b_addr);  in pt3_free_dmabuf()
145 	adap->num_bufs = 0;  in pt3_free_dmabuf()
147 	for (i = 0; i < adap->num_desc_bufs; i++)  in pt3_free_dmabuf()
149 			adap->desc_buf[i].descs, adap->desc_buf[i].b_addr);  in pt3_free_dmabuf()
150 	adap->num_desc_bufs = 0;  in pt3_free_dmabuf()
154 int pt3_alloc_dmabuf(struct pt3_adapter *adap)  in pt3_alloc_dmabuf()  argument
164 	pt3 = adap->dvb_adap.priv;  in pt3_alloc_dmabuf()
165 	adap->num_bufs = 0;  in pt3_alloc_dmabuf()
166 	adap->num_desc_bufs = 0;  in pt3_alloc_dmabuf()
169 					&adap->buffer[i].b_addr, GFP_KERNEL);  in pt3_alloc_dmabuf()
172 		adap->buffer[i].data = p;  in pt3_alloc_dmabuf()
173 		adap->num_bufs++;  in pt3_alloc_dmabuf()
175 	pt3_init_dmabuf(adap);  in pt3_alloc_dmabuf()
181 		DIV_ROUND_UP(adap->num_bufs * DATA_BUF_XFERS, DESCS_IN_PAGE);  in pt3_alloc_dmabuf()
187 		adap->num_desc_bufs++;  in pt3_alloc_dmabuf()
188 		adap->desc_buf[i].descs = p;  in pt3_alloc_dmabuf()
189 		adap->desc_buf[i].b_addr = desc_addr;  in pt3_alloc_dmabuf()
192 			d = &adap->desc_buf[i - 1].descs[DESCS_IN_PAGE - 1];  in pt3_alloc_dmabuf()
197 			data_addr = adap->buffer[idx].b_addr + ofs;  in pt3_alloc_dmabuf()
198 			d = &adap->desc_buf[i].descs[j];  in pt3_alloc_dmabuf()
211 				if (idx >= adap->num_bufs) {  in pt3_alloc_dmabuf()
212 					desc_addr = adap->desc_buf[0].b_addr;  in pt3_alloc_dmabuf()
223 	pt3_free_dmabuf(adap);  in pt3_alloc_dmabuf()