58 	struct ftmac100_rxdes rxdes[RX_QUEUE_ENTRIES];  member
85 				  struct ftmac100_rxdes *rxdes, gfp_t gfp);
182 				  offsetof(struct ftmac100_descs, rxdes));  in ftmac100_start_hw()
203 static bool ftmac100_rxdes_first_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_first_segment()  argument
205 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FRS);  in ftmac100_rxdes_first_segment()
208 static bool ftmac100_rxdes_last_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_last_segment()  argument
210 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_LRS);  in ftmac100_rxdes_last_segment()
213 static bool ftmac100_rxdes_owned_by_dma(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_owned_by_dma()  argument
215 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_owned_by_dma()
218 static void ftmac100_rxdes_set_dma_own(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_dma_own()  argument
221 	rxdes->rxdes0 = cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_set_dma_own()
224 static bool ftmac100_rxdes_rx_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_rx_error()  argument
226 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ERR);  in ftmac100_rxdes_rx_error()
229 static bool ftmac100_rxdes_crc_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_crc_error()  argument
231 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_CRC_ERR);  in ftmac100_rxdes_crc_error()
234 static bool ftmac100_rxdes_frame_too_long(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_too_long()  argument
236 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FTL);  in ftmac100_rxdes_frame_too_long()
239 static bool ftmac100_rxdes_runt(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_runt()  argument
241 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RUNT);  in ftmac100_rxdes_runt()
244 static bool ftmac100_rxdes_odd_nibble(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_odd_nibble()  argument
246 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ODD_NB);  in ftmac100_rxdes_odd_nibble()
249 static unsigned int ftmac100_rxdes_frame_length(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_length()  argument
251 	return le32_to_cpu(rxdes->rxdes0) & FTMAC100_RXDES0_RFL;  in ftmac100_rxdes_frame_length()
254 static bool ftmac100_rxdes_multicast(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_multicast()  argument
256 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_MULTICAST);  in ftmac100_rxdes_multicast()
259 static void ftmac100_rxdes_set_buffer_size(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_buffer_size()  argument
262 	rxdes->rxdes1 &= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_buffer_size()
263 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_RXBUF_SIZE(size));  in ftmac100_rxdes_set_buffer_size()
266 static void ftmac100_rxdes_set_end_of_ring(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_end_of_ring()  argument
268 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_end_of_ring()
271 static void ftmac100_rxdes_set_dma_addr(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_dma_addr()  argument
274 	rxdes->rxdes2 = cpu_to_le32(addr);  in ftmac100_rxdes_set_dma_addr()
277 static dma_addr_t ftmac100_rxdes_get_dma_addr(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_dma_addr()  argument
279 	return le32_to_cpu(rxdes->rxdes2);  in ftmac100_rxdes_get_dma_addr()
286 static void ftmac100_rxdes_set_page(struct ftmac100_rxdes *rxdes, struct page *page)  in ftmac100_rxdes_set_page()  argument
288 	rxdes->rxdes3 = (unsigned int)page;  in ftmac100_rxdes_set_page()
291 static struct page *ftmac100_rxdes_get_page(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_page()  argument
293 	return (struct page *)rxdes->rxdes3;  in ftmac100_rxdes_get_page()
311 	return &priv->descs->rxdes[priv->rx_pointer];  in ftmac100_current_rxdes()
317 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()  local
319 	while (!ftmac100_rxdes_owned_by_dma(rxdes)) {  in ftmac100_rx_locate_first_segment()
320 		if (ftmac100_rxdes_first_segment(rxdes))  in ftmac100_rx_locate_first_segment()
321 			return rxdes;  in ftmac100_rx_locate_first_segment()
323 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_locate_first_segment()
325 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()
332 				     struct ftmac100_rxdes *rxdes)  in ftmac100_rx_packet_error()  argument
337 	if (unlikely(ftmac100_rxdes_rx_error(rxdes))) {  in ftmac100_rx_packet_error()
345 	if (unlikely(ftmac100_rxdes_crc_error(rxdes))) {  in ftmac100_rx_packet_error()
353 	if (unlikely(ftmac100_rxdes_frame_too_long(rxdes))) {  in ftmac100_rx_packet_error()
359 	} else if (unlikely(ftmac100_rxdes_runt(rxdes))) {  in ftmac100_rx_packet_error()
365 	} else if (unlikely(ftmac100_rxdes_odd_nibble(rxdes))) {  in ftmac100_rx_packet_error()
379 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()  local
383 		netdev_dbg(netdev, "drop packet %p\n", rxdes);  in ftmac100_rx_drop_packet()
386 		if (ftmac100_rxdes_last_segment(rxdes))  in ftmac100_rx_drop_packet()
389 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_drop_packet()
391 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()
392 	} while (!done && !ftmac100_rxdes_owned_by_dma(rxdes));  in ftmac100_rx_drop_packet()
400 	struct ftmac100_rxdes *rxdes;  in ftmac100_rx_packet()  local
406 	rxdes = ftmac100_rx_locate_first_segment(priv);  in ftmac100_rx_packet()
407 	if (!rxdes)  in ftmac100_rx_packet()
410 	if (unlikely(ftmac100_rx_packet_error(priv, rxdes))) {  in ftmac100_rx_packet()
419 	if (unlikely(!ftmac100_rxdes_last_segment(rxdes)))  in ftmac100_rx_packet()
432 	if (unlikely(ftmac100_rxdes_multicast(rxdes)))  in ftmac100_rx_packet()
435 	map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_rx_packet()
438 	length = ftmac100_rxdes_frame_length(rxdes);  in ftmac100_rx_packet()
439 	page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_rx_packet()
452 	ftmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);  in ftmac100_rx_packet()
671 				  struct ftmac100_rxdes *rxdes, gfp_t gfp)  in ftmac100_alloc_rx_page()  argument
692 	ftmac100_rxdes_set_page(rxdes, page);  in ftmac100_alloc_rx_page()
693 	ftmac100_rxdes_set_dma_addr(rxdes, map);  in ftmac100_alloc_rx_page()
694 	ftmac100_rxdes_set_buffer_size(rxdes, RX_BUF_SIZE);  in ftmac100_alloc_rx_page()
695 	ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_alloc_rx_page()
704 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_free_buffers()  local
705 		struct page *page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_free_buffers()
706 		dma_addr_t map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_free_buffers()
743 	ftmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);  in ftmac100_alloc_buffers()
746 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_alloc_buffers()  local
748 		if (ftmac100_alloc_rx_page(priv, rxdes, GFP_KERNEL))  in ftmac100_alloc_buffers()