50 	struct ftgmac100_rxdes rxdes[RX_QUEUE_ENTRIES];  member
80 				   struct ftgmac100_rxdes *rxdes, gfp_t gfp);
151 				   offsetof(struct ftgmac100_descs, rxdes));  in ftgmac100_init_hw()
201 static bool ftgmac100_rxdes_first_segment(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_first_segment()  argument
203 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_FRS);  in ftgmac100_rxdes_first_segment()
206 static bool ftgmac100_rxdes_last_segment(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_last_segment()  argument
208 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_LRS);  in ftgmac100_rxdes_last_segment()
211 static bool ftgmac100_rxdes_packet_ready(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_packet_ready()  argument
213 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RXPKT_RDY);  in ftgmac100_rxdes_packet_ready()
216 static void ftgmac100_rxdes_set_dma_own(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_set_dma_own()  argument
219 	rxdes->rxdes0 &= cpu_to_le32(FTGMAC100_RXDES0_EDORR);  in ftgmac100_rxdes_set_dma_own()
222 static bool ftgmac100_rxdes_rx_error(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_rx_error()  argument
224 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RX_ERR);  in ftgmac100_rxdes_rx_error()
227 static bool ftgmac100_rxdes_crc_error(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_crc_error()  argument
229 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_CRC_ERR);  in ftgmac100_rxdes_crc_error()
232 static bool ftgmac100_rxdes_frame_too_long(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_frame_too_long()  argument
234 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_FTL);  in ftgmac100_rxdes_frame_too_long()
237 static bool ftgmac100_rxdes_runt(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_runt()  argument
239 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RUNT);  in ftgmac100_rxdes_runt()
242 static bool ftgmac100_rxdes_odd_nibble(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_odd_nibble()  argument
244 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_RX_ODD_NB);  in ftgmac100_rxdes_odd_nibble()
247 static unsigned int ftgmac100_rxdes_data_length(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_data_length()  argument
249 	return le32_to_cpu(rxdes->rxdes0) & FTGMAC100_RXDES0_VDBC;  in ftgmac100_rxdes_data_length()
252 static bool ftgmac100_rxdes_multicast(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_multicast()  argument
254 	return rxdes->rxdes0 & cpu_to_le32(FTGMAC100_RXDES0_MULTICAST);  in ftgmac100_rxdes_multicast()
257 static void ftgmac100_rxdes_set_end_of_ring(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_set_end_of_ring()  argument
259 	rxdes->rxdes0 |= cpu_to_le32(FTGMAC100_RXDES0_EDORR);  in ftgmac100_rxdes_set_end_of_ring()
262 static void ftgmac100_rxdes_set_dma_addr(struct ftgmac100_rxdes *rxdes,  in ftgmac100_rxdes_set_dma_addr()  argument
265 	rxdes->rxdes3 = cpu_to_le32(addr);  in ftgmac100_rxdes_set_dma_addr()
268 static dma_addr_t ftgmac100_rxdes_get_dma_addr(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_get_dma_addr()  argument
270 	return le32_to_cpu(rxdes->rxdes3);  in ftgmac100_rxdes_get_dma_addr()
273 static bool ftgmac100_rxdes_is_tcp(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_is_tcp()  argument
275 	return (rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_PROT_MASK)) ==  in ftgmac100_rxdes_is_tcp()
279 static bool ftgmac100_rxdes_is_udp(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_is_udp()  argument
281 	return (rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_PROT_MASK)) ==  in ftgmac100_rxdes_is_udp()
285 static bool ftgmac100_rxdes_tcpcs_err(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_tcpcs_err()  argument
287 	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_TCP_CHKSUM_ERR);  in ftgmac100_rxdes_tcpcs_err()
290 static bool ftgmac100_rxdes_udpcs_err(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_udpcs_err()  argument
292 	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_UDP_CHKSUM_ERR);  in ftgmac100_rxdes_udpcs_err()
295 static bool ftgmac100_rxdes_ipcs_err(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_ipcs_err()  argument
297 	return rxdes->rxdes1 & cpu_to_le32(FTGMAC100_RXDES1_IP_CHKSUM_ERR);  in ftgmac100_rxdes_ipcs_err()
304 static void ftgmac100_rxdes_set_page(struct ftgmac100_rxdes *rxdes, struct page *page)  in ftgmac100_rxdes_set_page()  argument
306 	rxdes->rxdes2 = (unsigned int)page;  in ftgmac100_rxdes_set_page()
309 static struct page *ftgmac100_rxdes_get_page(struct ftgmac100_rxdes *rxdes)  in ftgmac100_rxdes_get_page()  argument
311 	return (struct page *)rxdes->rxdes2;  in ftgmac100_rxdes_get_page()
329 	return &priv->descs->rxdes[priv->rx_pointer];  in ftgmac100_current_rxdes()
335 	struct ftgmac100_rxdes *rxdes = ftgmac100_current_rxdes(priv);  in ftgmac100_rx_locate_first_segment()  local
337 	while (ftgmac100_rxdes_packet_ready(rxdes)) {  in ftgmac100_rx_locate_first_segment()
338 		if (ftgmac100_rxdes_first_segment(rxdes))  in ftgmac100_rx_locate_first_segment()
339 			return rxdes;  in ftgmac100_rx_locate_first_segment()
341 		ftgmac100_rxdes_set_dma_own(rxdes);  in ftgmac100_rx_locate_first_segment()
343 		rxdes = ftgmac100_current_rxdes(priv);  in ftgmac100_rx_locate_first_segment()
350 				      struct ftgmac100_rxdes *rxdes)  in ftgmac100_rx_packet_error()  argument
355 	if (unlikely(ftgmac100_rxdes_rx_error(rxdes))) {  in ftgmac100_rx_packet_error()
363 	if (unlikely(ftgmac100_rxdes_crc_error(rxdes))) {  in ftgmac100_rx_packet_error()
369 	} else if (unlikely(ftgmac100_rxdes_ipcs_err(rxdes))) {  in ftgmac100_rx_packet_error()
376 	if (unlikely(ftgmac100_rxdes_frame_too_long(rxdes))) {  in ftgmac100_rx_packet_error()
382 	} else if (unlikely(ftgmac100_rxdes_runt(rxdes))) {  in ftgmac100_rx_packet_error()
388 	} else if (unlikely(ftgmac100_rxdes_odd_nibble(rxdes))) {  in ftgmac100_rx_packet_error()
402 	struct ftgmac100_rxdes *rxdes = ftgmac100_current_rxdes(priv);  in ftgmac100_rx_drop_packet()  local
406 		netdev_dbg(netdev, "drop packet %p\n", rxdes);  in ftgmac100_rx_drop_packet()
409 		if (ftgmac100_rxdes_last_segment(rxdes))  in ftgmac100_rx_drop_packet()
412 		ftgmac100_rxdes_set_dma_own(rxdes);  in ftgmac100_rx_drop_packet()
414 		rxdes = ftgmac100_current_rxdes(priv);  in ftgmac100_rx_drop_packet()
415 	} while (!done && ftgmac100_rxdes_packet_ready(rxdes));  in ftgmac100_rx_drop_packet()
423 	struct ftgmac100_rxdes *rxdes;  in ftgmac100_rx_packet()  local
427 	rxdes = ftgmac100_rx_locate_first_segment(priv);  in ftgmac100_rx_packet()
428 	if (!rxdes)  in ftgmac100_rx_packet()
431 	if (unlikely(ftgmac100_rx_packet_error(priv, rxdes))) {  in ftgmac100_rx_packet()
446 	if (unlikely(ftgmac100_rxdes_multicast(rxdes)))  in ftgmac100_rx_packet()
454 	if ((ftgmac100_rxdes_is_tcp(rxdes) && !ftgmac100_rxdes_tcpcs_err(rxdes)) ||  in ftgmac100_rx_packet()
455 	    (ftgmac100_rxdes_is_udp(rxdes) && !ftgmac100_rxdes_udpcs_err(rxdes)))  in ftgmac100_rx_packet()
459 		dma_addr_t map = ftgmac100_rxdes_get_dma_addr(rxdes);  in ftgmac100_rx_packet()
460 		struct page *page = ftgmac100_rxdes_get_page(rxdes);  in ftgmac100_rx_packet()
465 		size = ftgmac100_rxdes_data_length(rxdes);  in ftgmac100_rx_packet()
472 		if (ftgmac100_rxdes_last_segment(rxdes))  in ftgmac100_rx_packet()
475 		ftgmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);  in ftgmac100_rx_packet()
478 		rxdes = ftgmac100_current_rxdes(priv);  in ftgmac100_rx_packet()
717 				   struct ftgmac100_rxdes *rxdes, gfp_t gfp)  in ftgmac100_alloc_rx_page()  argument
738 	ftgmac100_rxdes_set_page(rxdes, page);  in ftgmac100_alloc_rx_page()
739 	ftgmac100_rxdes_set_dma_addr(rxdes, map);  in ftgmac100_alloc_rx_page()
740 	ftgmac100_rxdes_set_dma_own(rxdes);  in ftgmac100_alloc_rx_page()
749 		struct ftgmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftgmac100_free_buffers()  local
750 		struct page *page = ftgmac100_rxdes_get_page(rxdes);  in ftgmac100_free_buffers()
751 		dma_addr_t map = ftgmac100_rxdes_get_dma_addr(rxdes);  in ftgmac100_free_buffers()
787 	ftgmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);  in ftgmac100_alloc_buffers()
790 		struct ftgmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftgmac100_alloc_buffers()  local
792 		if (ftgmac100_alloc_rx_page(priv, rxdes, GFP_KERNEL))  in ftgmac100_alloc_buffers()