27 #define PRESTERA_SDMA_RX_DESC_PKT_LEN(desc) \  argument
28 	((le32_to_cpu((desc)->word2) >> 16) & GENMASK(13, 0))
30 #define PRESTERA_SDMA_RX_DESC_OWNER(desc) \  argument
31 	((le32_to_cpu((desc)->word1) & BIT(31)) >> 31)
33 #define PRESTERA_SDMA_RX_DESC_IS_RCVD(desc) \  argument
34 	(PRESTERA_SDMA_RX_DESC_OWNER(desc) == PRESTERA_SDMA_RX_DESC_CPU_OWN)
46 #define PRESTERA_SDMA_TX_DESC_OWNER(desc) \  argument
47 	((le32_to_cpu((desc)->word1) & BIT(31)) >> 31)
52 #define PRESTERA_SDMA_TX_DESC_IS_SENT(desc) \  argument
53 	(PRESTERA_SDMA_TX_DESC_OWNER(desc) == PRESTERA_SDMA_TX_DESC_CPU_OWN)
73 	struct prestera_sdma_desc *desc;  member
113 	struct prestera_sdma_desc *desc;  in prestera_sdma_buf_init()  local
116 	desc = dma_pool_alloc(sdma->desc_pool, GFP_DMA | GFP_KERNEL, &dma);  in prestera_sdma_buf_init()
117 	if (!desc)  in prestera_sdma_buf_init()
122 	buf->desc = desc;  in prestera_sdma_buf_init()
134 				       struct prestera_sdma_desc *desc,  in prestera_sdma_rx_desc_init()  argument
137 	u32 word = le32_to_cpu(desc->word2);  in prestera_sdma_rx_desc_init()
140 	desc->word2 = cpu_to_le32(word);  in prestera_sdma_rx_desc_init()
142 	desc->buff = cpu_to_le32(prestera_sdma_map(sdma, buf));  in prestera_sdma_rx_desc_init()
147 	desc->word1 = cpu_to_le32(0xA0000000);  in prestera_sdma_rx_desc_init()
151 					   struct prestera_sdma_desc *desc,  in prestera_sdma_rx_desc_set_next()  argument
154 	desc->next = cpu_to_le32(prestera_sdma_map(sdma, next));  in prestera_sdma_rx_desc_set_next()
207 	prestera_sdma_rx_desc_init(sdma, buf->desc, buf->buf_dma);  in prestera_sdma_rx_skb_get()
292 			struct prestera_sdma_desc *desc;  in prestera_sdma_rx_poll()  local
298 			desc = buf->desc;  in prestera_sdma_rx_poll()
300 			if (PRESTERA_SDMA_RX_DESC_IS_RCVD(desc)) {  in prestera_sdma_rx_poll()
309 			__skb_trim(buf->skb, PRESTERA_SDMA_RX_DESC_PKT_LEN(desc));  in prestera_sdma_rx_poll()
352 				dma_pool_free(sdma->desc_pool, buf->desc,  in prestera_sdma_rx_fini()
402 			prestera_sdma_rx_desc_init(sdma, next->desc,  in prestera_sdma_rx_init()
405 			prestera_sdma_rx_desc_set_next(sdma, prev->desc,  in prestera_sdma_rx_init()
413 		prestera_sdma_rx_desc_set_next(sdma, tail->desc, head->desc_dma);  in prestera_sdma_rx_init()
429 				       struct prestera_sdma_desc *desc)  in prestera_sdma_tx_desc_init()  argument
431 	desc->word1 = cpu_to_le32(PRESTERA_SDMA_TX_DESC_INIT);  in prestera_sdma_tx_desc_init()
432 	desc->word2 = 0;  in prestera_sdma_tx_desc_init()
436 					   struct prestera_sdma_desc *desc,  in prestera_sdma_tx_desc_set_next()  argument
439 	desc->next = cpu_to_le32(prestera_sdma_map(sdma, next));  in prestera_sdma_tx_desc_set_next()
443 					  struct prestera_sdma_desc *desc,  in prestera_sdma_tx_desc_set_buf()  argument
446 	u32 word = le32_to_cpu(desc->word2);  in prestera_sdma_tx_desc_set_buf()
450 	desc->buff = cpu_to_le32(prestera_sdma_map(sdma, buf));  in prestera_sdma_tx_desc_set_buf()
451 	desc->word2 = cpu_to_le32(word);  in prestera_sdma_tx_desc_set_buf()
454 static void prestera_sdma_tx_desc_xmit(struct prestera_sdma_desc *desc)  in prestera_sdma_tx_desc_xmit()  argument
456 	u32 word = le32_to_cpu(desc->word1);  in prestera_sdma_tx_desc_xmit()
463 	desc->word1 = cpu_to_le32(word);  in prestera_sdma_tx_desc_xmit()
508 		if (!PRESTERA_SDMA_TX_DESC_IS_SENT(buf->desc))  in prestera_sdma_tx_recycle_work_fn()
552 		prestera_sdma_tx_desc_init(sdma, next->desc);  in prestera_sdma_tx_init()
554 		prestera_sdma_tx_desc_set_next(sdma, prev->desc,  in prestera_sdma_tx_init()
562 	prestera_sdma_tx_desc_set_next(sdma, tail->desc, head->desc_dma);  in prestera_sdma_tx_init()
587 		if (buf->desc)  in prestera_sdma_tx_fini()
588 			dma_pool_free(sdma->desc_pool, buf->desc,  in prestera_sdma_tx_fini()
739 	prestera_sdma_tx_desc_set_buf(sdma, buf->desc, buf->buf_dma, skb->len);  in prestera_sdma_xmit()
755 	prestera_sdma_tx_desc_xmit(buf->desc);  in prestera_sdma_xmit()