45 	struct ftmac100_rxdes rxdes[RX_QUEUE_ENTRIES];  member
72 				  struct ftmac100_rxdes *rxdes, gfp_t gfp);
169 				  offsetof(struct ftmac100_descs, rxdes));  in ftmac100_start_hw()
190 static bool ftmac100_rxdes_first_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_first_segment()  argument
192 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FRS);  in ftmac100_rxdes_first_segment()
195 static bool ftmac100_rxdes_last_segment(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_last_segment()  argument
197 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_LRS);  in ftmac100_rxdes_last_segment()
200 static bool ftmac100_rxdes_owned_by_dma(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_owned_by_dma()  argument
202 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_owned_by_dma()
205 static void ftmac100_rxdes_set_dma_own(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_dma_own()  argument
208 	rxdes->rxdes0 = cpu_to_le32(FTMAC100_RXDES0_RXDMA_OWN);  in ftmac100_rxdes_set_dma_own()
211 static bool ftmac100_rxdes_rx_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_rx_error()  argument
213 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ERR);  in ftmac100_rxdes_rx_error()
216 static bool ftmac100_rxdes_crc_error(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_crc_error()  argument
218 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_CRC_ERR);  in ftmac100_rxdes_crc_error()
221 static bool ftmac100_rxdes_frame_too_long(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_too_long()  argument
223 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_FTL);  in ftmac100_rxdes_frame_too_long()
226 static bool ftmac100_rxdes_runt(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_runt()  argument
228 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RUNT);  in ftmac100_rxdes_runt()
231 static bool ftmac100_rxdes_odd_nibble(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_odd_nibble()  argument
233 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_RX_ODD_NB);  in ftmac100_rxdes_odd_nibble()
236 static unsigned int ftmac100_rxdes_frame_length(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_frame_length()  argument
238 	return le32_to_cpu(rxdes->rxdes0) & FTMAC100_RXDES0_RFL;  in ftmac100_rxdes_frame_length()
241 static bool ftmac100_rxdes_multicast(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_multicast()  argument
243 	return rxdes->rxdes0 & cpu_to_le32(FTMAC100_RXDES0_MULTICAST);  in ftmac100_rxdes_multicast()
246 static void ftmac100_rxdes_set_buffer_size(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_buffer_size()  argument
249 	rxdes->rxdes1 &= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_buffer_size()
250 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_RXBUF_SIZE(size));  in ftmac100_rxdes_set_buffer_size()
253 static void ftmac100_rxdes_set_end_of_ring(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_set_end_of_ring()  argument
255 	rxdes->rxdes1 |= cpu_to_le32(FTMAC100_RXDES1_EDORR);  in ftmac100_rxdes_set_end_of_ring()
258 static void ftmac100_rxdes_set_dma_addr(struct ftmac100_rxdes *rxdes,  in ftmac100_rxdes_set_dma_addr()  argument
261 	rxdes->rxdes2 = cpu_to_le32(addr);  in ftmac100_rxdes_set_dma_addr()
264 static dma_addr_t ftmac100_rxdes_get_dma_addr(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_dma_addr()  argument
266 	return le32_to_cpu(rxdes->rxdes2);  in ftmac100_rxdes_get_dma_addr()
273 static void ftmac100_rxdes_set_page(struct ftmac100_rxdes *rxdes, struct page *page)  in ftmac100_rxdes_set_page()  argument
275 	rxdes->rxdes3 = (unsigned int)page;  in ftmac100_rxdes_set_page()
278 static struct page *ftmac100_rxdes_get_page(struct ftmac100_rxdes *rxdes)  in ftmac100_rxdes_get_page()  argument
280 	return (struct page *)rxdes->rxdes3;  in ftmac100_rxdes_get_page()
298 	return &priv->descs->rxdes[priv->rx_pointer];  in ftmac100_current_rxdes()
304 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()  local
306 	while (!ftmac100_rxdes_owned_by_dma(rxdes)) {  in ftmac100_rx_locate_first_segment()
307 		if (ftmac100_rxdes_first_segment(rxdes))  in ftmac100_rx_locate_first_segment()
308 			return rxdes;  in ftmac100_rx_locate_first_segment()
310 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_locate_first_segment()
312 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_locate_first_segment()
319 				     struct ftmac100_rxdes *rxdes)  in ftmac100_rx_packet_error()  argument
324 	if (unlikely(ftmac100_rxdes_rx_error(rxdes))) {  in ftmac100_rx_packet_error()
332 	if (unlikely(ftmac100_rxdes_crc_error(rxdes))) {  in ftmac100_rx_packet_error()
340 	if (unlikely(ftmac100_rxdes_frame_too_long(rxdes))) {  in ftmac100_rx_packet_error()
346 	} else if (unlikely(ftmac100_rxdes_runt(rxdes))) {  in ftmac100_rx_packet_error()
352 	} else if (unlikely(ftmac100_rxdes_odd_nibble(rxdes))) {  in ftmac100_rx_packet_error()
366 	struct ftmac100_rxdes *rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()  local
370 		netdev_dbg(netdev, "drop packet %p\n", rxdes);  in ftmac100_rx_drop_packet()
373 		if (ftmac100_rxdes_last_segment(rxdes))  in ftmac100_rx_drop_packet()
376 		ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_rx_drop_packet()
378 		rxdes = ftmac100_current_rxdes(priv);  in ftmac100_rx_drop_packet()
379 	} while (!done && !ftmac100_rxdes_owned_by_dma(rxdes));  in ftmac100_rx_drop_packet()
387 	struct ftmac100_rxdes *rxdes;  in ftmac100_rx_packet()  local
394 	rxdes = ftmac100_rx_locate_first_segment(priv);  in ftmac100_rx_packet()
395 	if (!rxdes)  in ftmac100_rx_packet()
398 	if (unlikely(ftmac100_rx_packet_error(priv, rxdes))) {  in ftmac100_rx_packet()
407 	ret = ftmac100_rxdes_last_segment(rxdes);  in ftmac100_rx_packet()
420 	if (unlikely(ftmac100_rxdes_multicast(rxdes)))  in ftmac100_rx_packet()
423 	map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_rx_packet()
426 	length = ftmac100_rxdes_frame_length(rxdes);  in ftmac100_rx_packet()
427 	page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_rx_packet()
440 	ftmac100_alloc_rx_page(priv, rxdes, GFP_ATOMIC);  in ftmac100_rx_packet()
659 				  struct ftmac100_rxdes *rxdes, gfp_t gfp)  in ftmac100_alloc_rx_page()  argument
680 	ftmac100_rxdes_set_page(rxdes, page);  in ftmac100_alloc_rx_page()
681 	ftmac100_rxdes_set_dma_addr(rxdes, map);  in ftmac100_alloc_rx_page()
682 	ftmac100_rxdes_set_buffer_size(rxdes, RX_BUF_SIZE);  in ftmac100_alloc_rx_page()
683 	ftmac100_rxdes_set_dma_own(rxdes);  in ftmac100_alloc_rx_page()
692 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_free_buffers()  local
693 		struct page *page = ftmac100_rxdes_get_page(rxdes);  in ftmac100_free_buffers()
694 		dma_addr_t map = ftmac100_rxdes_get_dma_addr(rxdes);  in ftmac100_free_buffers()
730 	ftmac100_rxdes_set_end_of_ring(&priv->descs->rxdes[RX_QUEUE_ENTRIES - 1]);  in ftmac100_alloc_buffers()
733 		struct ftmac100_rxdes *rxdes = &priv->descs->rxdes[i];  in ftmac100_alloc_buffers()  local
735 		if (ftmac100_alloc_rx_page(priv, rxdes, GFP_KERNEL))  in ftmac100_alloc_buffers()