134 	unsigned int d_idx;  in dwmac_send()  local
145 	d_idx = p->tx_desc_head;  in dwmac_send()
166 		p->tx_frags[d_idx] = pinned;  in dwmac_send()
167 		LOG_DBG("d[%d]: frag %p pinned %p len %d", d_idx,  in dwmac_send()
178 		d = &p->tx_descs[d_idx];  in dwmac_send()
187 		INC_WRAP(d_idx, NB_TX_DESCS);  in dwmac_send()
195 	p->tx_desc_head = d_idx;  in dwmac_send()
198 	REG_WRITE(DMA_CHn_TXDESC_TAIL_PTR(0), TXDESC_PHYS_L(d_idx));  in dwmac_send()
203 	while (d_idx != p->tx_desc_head) {  in dwmac_send()
205 		DEC_WRAP(d_idx, NB_TX_DESCS);  in dwmac_send()
206 		frag = p->tx_frags[d_idx];  in dwmac_send()
215 	unsigned int d_idx;  in dwmac_tx_release()  local
220 	for (d_idx = p->tx_desc_tail;  in dwmac_tx_release()
221 	     d_idx != p->tx_desc_head;  in dwmac_tx_release()
222 	     INC_WRAP(d_idx, NB_TX_DESCS), k_sem_give(&p->free_tx_descs)) {  in dwmac_tx_release()
228 		d = &p->tx_descs[d_idx];  in dwmac_tx_release()
230 		LOG_DBG("TDES3[%d] = 0x%08x", d_idx, des3_val);  in dwmac_tx_release()
238 		frag = p->tx_frags[d_idx];  in dwmac_tx_release()
251 	p->tx_desc_tail = d_idx;  in dwmac_tx_release()
258 	unsigned int d_idx, bytes_so_far;  in dwmac_receive()  local
261 	for (d_idx = p->rx_desc_tail;  in dwmac_receive()
262 	     d_idx != p->rx_desc_head;  in dwmac_receive()
263 	     INC_WRAP(d_idx, NB_RX_DESCS), k_sem_give(&p->free_rx_descs)) {  in dwmac_receive()
267 			d_idx, p->rx_desc_head);  in dwmac_receive()
269 		d = &p->rx_descs[d_idx];  in dwmac_receive()
271 		LOG_DBG("RDES3[%d] = 0x%08x", d_idx, des3_val);  in dwmac_receive()
287 				LOG_ERR("d[%d] first desc but pkt exists", d_idx);  in dwmac_receive()
299 			LOG_ERR("no rx_pkt: skipping desc %d", d_idx);  in dwmac_receive()
304 		frag = p->rx_frags[d_idx];  in dwmac_receive()
305 		p->rx_frags[d_idx] = NULL;  in dwmac_receive()
327 	p->rx_desc_tail = d_idx;  in dwmac_receive()
335 	unsigned int d_idx;  in dwmac_rx_refill_thread()  local
340 	d_idx = p->rx_desc_head;  in dwmac_rx_refill_thread()
352 		d = &p->rx_descs[d_idx];  in dwmac_rx_refill_thread()
356 			 d_idx, d->des3, k_sem_count_get(&p->free_rx_descs),  in dwmac_rx_refill_thread()
359 		frag = p->rx_frags[d_idx];  in dwmac_rx_refill_thread()
369 			LOG_DBG("new frag[%d] at %p", d_idx, frag->data);  in dwmac_rx_refill_thread()
372 			p->rx_frags[d_idx] = frag;  in dwmac_rx_refill_thread()
374 			LOG_DBG("reusing frag[%d] at %p", d_idx, frag->data);  in dwmac_rx_refill_thread()
387 		p->rx_desc_head = INC_WRAP(d_idx, NB_RX_DESCS);  in dwmac_rx_refill_thread()
390 		REG_WRITE(DMA_CHn_RXDESC_TAIL_PTR(0), RXDESC_PHYS_L(d_idx));  in dwmac_rx_refill_thread()