59 	struct ftmac100_rxdes rxdes[RX_QUEUE_ENTRIES];  member
86 				  struct ftmac100_rxdes *rxdes, gfp_t gfp);
183 				  offsetof(struct ftmac100_descs, rxdes));  in ftmac100_start_hw()
204 static bool ftmac100_rxdes_first_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_first_segment()  argument
206 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FRS);  in ftmac100_rxdes_first_segment()
209 static bool ftmac100_rxdes_last_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_last_segment()  argument
211 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_LRS);  in ftmac100_rxdes_last_segment()
214 static bool ftmac100_rxdes_owned_by_dma(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_owned_by_dma()  argument
216 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_owned_by_dma()
219 static void ftmac100_rxdes_set_dma_own(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_dma_own()  argument
222 	rxdes->rxdes0 = cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_set_dma_own()
225 static bool ftmac100_rxdes_rx_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_rx_error()  argument
227 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ERR);  in ftmac100_rxdes_rx_error()
230 static bool ftmac100_rxdes_crc_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_crc_error()  argument
232 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_CRC_ERR);  in ftmac100_rxdes_crc_error()
235 static bool ftmac100_rxdes_frame_too_long(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_too_long()  argument
237 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FTL);  in ftmac100_rxdes_frame_too_long()
240 static bool ftmac100_rxdes_runt(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_runt()  argument
242 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RUNT);  in ftmac100_rxdes_runt()
245 static bool ftmac100_rxdes_odd_nibble(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_odd_nibble()  argument
247 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ODD_NB);  in ftmac100_rxdes_odd_nibble()
250 static unsigned int ftmac100_rxdes_frame_length(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_length()  argument
252 	return le32_to_cpu(rxdes->rxdes0) & FTMAC100_RXDES0_RFL;  in ftmac100_rxdes_frame_length()
255 static bool ftmac100_rxdes_multicast(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_multicast()  argument
257 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_MULTICAST);  in ftmac100_rxdes_multicast()
260 static void ftmac100_rxdes_set_buffer_size(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_buffer_size()  argument
263 	rxdes->rxdes1 &= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_buffer_size()
264 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_RXBUF_SIZE(size));  in ftmac100_rxdes_set_buffer_size()
267 static void ftmac100_rxdes_set_end_of_ring(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_end_of_ring()  argument
269 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_end_of_ring()
272 static void ftmac100_rxdes_set_dma_addr(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_dma_addr()  argument
275 	rxdes->rxdes2 = cpu_to_le32(addr);  in ftmac100_rxdes_set_dma_addr()
278 static dma_addr_t ftmac100_rxdes_get_dma_addr(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_dma_addr()  argument
280 	return le32_to_cpu(rxdes->rxdes2);  in ftmac100_rxdes_get_dma_addr()
287 static void ftmac100_rxdes_set_page(struct ftmac100_rxdes *rxdes, struct page *page)  in ftmac100_rxdes_set_page()  argument
289 	rxdes->rxdes3 = (unsigned int)page;  in ftmac100_rxdes_set_page()
292 static struct page *ftmac100_rxdes_get_page(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_page()  argument
294 	return (struct page *)rxdes->rxdes3;  in ftmac100_rxdes_get_page()
312 	return &priv->descs->rxdes[priv->rx_pointer];  in ftmac100_current_rxdes()
318 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()  local
320 	while (!ftmac100_rxdes_owned_by_dma(rxdes)) {  in ftmac100_rx_locate_first_segment()
321 		if (ftmac100_rxdes_first_segment(rxdes))  in ftmac100_rx_locate_first_segment()
322 			return rxdes;  in ftmac100_rx_locate_first_segment()
324 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_locate_first_segment()
326 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()
333 				     struct ftmac100_rxdes *rxdes)  in ftmac100_rx_packet_error()  argument
338 	if (unlikely(ftmac100_rxdes_rx_error(rxdes))) {  in ftmac100_rx_packet_error()
346 	if (unlikely(ftmac100_rxdes_crc_error(rxdes))) {  in ftmac100_rx_packet_error()
354 	if (unlikely(ftmac100_rxdes_frame_too_long(rxdes))) {  in ftmac100_rx_packet_error()
360 	} else if (unlikely(ftmac100_rxdes_runt(rxdes))) {  in ftmac100_rx_packet_error()
366 	} else if (unlikely(ftmac100_rxdes_odd_nibble(rxdes))) {  in ftmac100_rx_packet_error()
380 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()  local
384 		netdev_dbg(netdev, "drop packet %p\n", rxdes);  in ftmac100_rx_drop_packet()
387 		if (ftmac100_rxdes_last_segment(rxdes))  in ftmac100_rx_drop_packet()
390 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_drop_packet()
392 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()
393 	} while (!done && !ftmac100_rxdes_owned_by_dma(rxdes));  in ftmac100_rx_drop_packet()
401 	struct ftmac100_rxdes *rxdes;  in ftmac100_rx_packet()  local
408 	rxdes = ftmac100_rx_locate_first_segment(priv);  in ftmac100_rx_packet()
409 	if (!rxdes)  in ftmac100_rx_packet()
412 	if (unlikely(ftmac100_rx_packet_error(priv, rxdes))) {  in ftmac100_rx_packet()
421 	ret = ftmac100_rxdes_last_segment(rxdes);  in ftmac100_rx_packet()
434 	if (unlikely(ftmac100_rxdes_multicast(rxdes)))  in ftmac100_rx_packet()
437 	map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_rx_packet()
440 	length = ftmac100_rxdes_frame_length(rxdes);  in ftmac100_rx_packet()
441 	page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_rx_packet()
454 	ftmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);  in ftmac100_rx_packet()
673 				  struct ftmac100_rxdes *rxdes, gfp_t gfp)  in ftmac100_alloc_rx_page()  argument
694 	ftmac100_rxdes_set_page(rxdes, page);  in ftmac100_alloc_rx_page()
695 	ftmac100_rxdes_set_dma_addr(rxdes, map);  in ftmac100_alloc_rx_page()
696 	ftmac100_rxdes_set_buffer_size(rxdes, RX_BUF_SIZE);  in ftmac100_alloc_rx_page()
697 	ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_alloc_rx_page()
706 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_free_buffers()  local
707 		struct page *page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_free_buffers()
708 		dma_addr_t map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_free_buffers()
745 	ftmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);  in ftmac100_alloc_buffers()
748 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_alloc_buffers()  local
750 		if (ftmac100_alloc_rx_page(priv, rxdes, GFP_KERNEL))  in ftmac100_alloc_buffers()