dma/bestcomm/gen_bd.c

88 	struct bcom_task *tsk;
91 	tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_gen_bd),
93 	if (!tsk)
96 	tsk->flags = BCOM_FLAGS_NONE;
98 	priv = tsk->priv;
104 	if (bcom_gen_bd_rx_reset(tsk)) {
105 		bcom_task_free(tsk);
109 	return tsk;
114 bcom_gen_bd_rx_reset(struct bcom_task *tsk)
116 	struct bcom_gen_bd_priv *priv = tsk->priv;
121 	bcom_disable_task(tsk->tasknum);
124 	var = (struct bcom_gen_bd_rx_var *) bcom_task_var(tsk->tasknum);
125 	inc = (struct bcom_gen_bd_rx_inc *) bcom_task_inc(tsk->tasknum);
127 	if (bcom_load_image(tsk->tasknum, bcom_gen_bd_rx_task))
131 				offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]);
133 	var->bd_base	= tsk->bd_pa;
134 	var->bd_last	= tsk->bd_pa + ((tsk->num_bd-1) * tsk->bd_size);
135 	var->bd_start	= tsk->bd_pa;
142 	tsk->index = 0;
143 	tsk->outdex = 0;
145 	memset_io(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size);
148 	bcom_set_task_pragma(tsk->tasknum, BCOM_GEN_RX_BD_PRAGMA);
149 	bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum);
152 	bcom_set_initiator(tsk->tasknum, priv->initiator);
154 	out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum);	/* Clear ints */
161 bcom_gen_bd_rx_release(struct bcom_task *tsk)
164 	bcom_task_free(tsk);
173 	struct bcom_task *tsk;
176 	tsk = bcom_task_alloc(queue_len, sizeof(struct bcom_gen_bd),
178 	if (!tsk)
181 	tsk->flags = BCOM_FLAGS_NONE;
183 	priv = tsk->priv;
188 	if (bcom_gen_bd_tx_reset(tsk)) {
189 		bcom_task_free(tsk);
193 	return tsk;
198 bcom_gen_bd_tx_reset(struct bcom_task *tsk)
200 	struct bcom_gen_bd_priv *priv = tsk->priv;
205 	bcom_disable_task(tsk->tasknum);
208 	var = (struct bcom_gen_bd_tx_var *) bcom_task_var(tsk->tasknum);
209 	inc = (struct bcom_gen_bd_tx_inc *) bcom_task_inc(tsk->tasknum);
211 	if (bcom_load_image(tsk->tasknum, bcom_gen_bd_tx_task))
215 				offsetof(struct mpc52xx_sdma, tcr[tsk->tasknum]);
217 	var->bd_base	= tsk->bd_pa;
218 	var->bd_last	= tsk->bd_pa + ((tsk->num_bd-1) * tsk->bd_size);
219 	var->bd_start	= tsk->bd_pa;
226 	tsk->index = 0;
227 	tsk->outdex = 0;
229 	memset_io(tsk->bd, 0x00, tsk->num_bd * tsk->bd_size);
232 	bcom_set_task_pragma(tsk->tasknum, BCOM_GEN_TX_BD_PRAGMA);
233 	bcom_set_task_auto_start(tsk->tasknum, tsk->tasknum);
236 	bcom_set_initiator(tsk->tasknum, priv->initiator);
238 	out_be32(&bcom_eng->regs->IntPend, 1<<tsk->tasknum);	/* Clear ints */
245 bcom_gen_bd_tx_release(struct bcom_task *tsk)
248 	bcom_task_free(tsk);