342 static bool allwinner_sun8i_emac_desc_owned(FrameDescriptor *desc,  in allwinner_sun8i_emac_desc_owned()  argument
345     return (desc->status & DESC_STATUS_CTL) && (min_buf_size == 0 ||  in allwinner_sun8i_emac_desc_owned()
346            (desc->status2 & DESC_STATUS2_BUF_SIZE_MASK) >= min_buf_size);  in allwinner_sun8i_emac_desc_owned()
350                                           FrameDescriptor *desc,  in allwinner_sun8i_emac_get_desc()  argument
356     desc->status = le32_to_cpu(desc_words[0]);  in allwinner_sun8i_emac_get_desc()
357     desc->status2 = le32_to_cpu(desc_words[1]);  in allwinner_sun8i_emac_get_desc()
358     desc->addr = le32_to_cpu(desc_words[2]);  in allwinner_sun8i_emac_get_desc()
359     desc->next = le32_to_cpu(desc_words[3]);  in allwinner_sun8i_emac_get_desc()
363                                                FrameDescriptor *desc)  in allwinner_sun8i_emac_next_desc()  argument
365     const uint32_t nxt = desc->next;  in allwinner_sun8i_emac_next_desc()
366     allwinner_sun8i_emac_get_desc(s, desc, nxt);  in allwinner_sun8i_emac_next_desc()
371                                                FrameDescriptor *desc,  in allwinner_sun8i_emac_find_desc()  argument
379         allwinner_sun8i_emac_get_desc(s, desc, desc_addr);  in allwinner_sun8i_emac_find_desc()
381         if (allwinner_sun8i_emac_desc_owned(desc, min_size)) {  in allwinner_sun8i_emac_find_desc()
383         } else if (desc->next == start_addr) {  in allwinner_sun8i_emac_find_desc()
386             desc_addr = desc->next;  in allwinner_sun8i_emac_find_desc()
394                                              FrameDescriptor *desc,  in allwinner_sun8i_emac_rx_desc()  argument
397     return allwinner_sun8i_emac_find_desc(s, desc, s->rx_desc_curr, min_size);  in allwinner_sun8i_emac_rx_desc()
401                                              FrameDescriptor *desc)  in allwinner_sun8i_emac_tx_desc()  argument
403     allwinner_sun8i_emac_get_desc(s, desc, s->tx_desc_curr);  in allwinner_sun8i_emac_tx_desc()
408                                             const FrameDescriptor *desc,  in allwinner_sun8i_emac_flush_desc()  argument
412     desc_words[0] = cpu_to_le32(desc->status);  in allwinner_sun8i_emac_flush_desc()
413     desc_words[1] = cpu_to_le32(desc->status2);  in allwinner_sun8i_emac_flush_desc()
414     desc_words[2] = cpu_to_le32(desc->addr);  in allwinner_sun8i_emac_flush_desc()
415     desc_words[3] = cpu_to_le32(desc->next);  in allwinner_sun8i_emac_flush_desc()
423     FrameDescriptor desc;  in allwinner_sun8i_emac_can_receive()  local
426            (allwinner_sun8i_emac_rx_desc(s, &desc, 0) != 0);  in allwinner_sun8i_emac_can_receive()
434     FrameDescriptor desc;  in allwinner_sun8i_emac_receive()  local
444     s->rx_desc_curr = allwinner_sun8i_emac_rx_desc(s, &desc,  in allwinner_sun8i_emac_receive()
452         desc.status &= ~DESC_STATUS_CTL;  in allwinner_sun8i_emac_receive()
453         desc.status &= ~RX_DESC_STATUS_FRM_LEN_MASK;  in allwinner_sun8i_emac_receive()
456             desc.status |= RX_DESC_STATUS_FIRST_DESC;  in allwinner_sun8i_emac_receive()
459         if ((desc.status2 & DESC_STATUS2_BUF_SIZE_MASK) <  in allwinner_sun8i_emac_receive()
461             desc_bytes = desc.status2 & DESC_STATUS2_BUF_SIZE_MASK;  in allwinner_sun8i_emac_receive()
462             desc.status |= desc_bytes << RX_DESC_STATUS_FRM_LEN_SHIFT;  in allwinner_sun8i_emac_receive()
470             desc.status |= RX_DESC_STATUS_LAST_DESC;  in allwinner_sun8i_emac_receive()
471             desc.status |= (bytes_left + padding)  in allwinner_sun8i_emac_receive()
475         dma_memory_write(&s->dma_as, desc.addr, buf, desc_bytes,  in allwinner_sun8i_emac_receive()
477         allwinner_sun8i_emac_flush_desc(s, &desc, s->rx_desc_curr);  in allwinner_sun8i_emac_receive()
478         trace_allwinner_sun8i_emac_receive(s->rx_desc_curr, desc.addr,  in allwinner_sun8i_emac_receive()
482         if (!(desc.status2 & RX_DESC_STATUS2_RX_INT_CTL)) {  in allwinner_sun8i_emac_receive()
491         s->rx_desc_curr = allwinner_sun8i_emac_find_desc(s, &desc, desc.next,  in allwinner_sun8i_emac_receive()
511     FrameDescriptor desc;  in allwinner_sun8i_emac_transmit()  local
517     s->tx_desc_curr = allwinner_sun8i_emac_tx_desc(s, &desc);  in allwinner_sun8i_emac_transmit()
520     while (allwinner_sun8i_emac_desc_owned(&desc, 0)) {  in allwinner_sun8i_emac_transmit()
523         bytes = desc.status2 & DESC_STATUS2_BUF_SIZE_MASK;  in allwinner_sun8i_emac_transmit()
525             desc.status |= TX_DESC_STATUS_LENGTH_ERR;  in allwinner_sun8i_emac_transmit()
528         dma_memory_read(&s->dma_as, desc.addr, packet_buf + packet_bytes,  in allwinner_sun8i_emac_transmit()
531         desc.status &= ~DESC_STATUS_CTL;  in allwinner_sun8i_emac_transmit()
532         allwinner_sun8i_emac_flush_desc(s, &desc, s->tx_desc_curr);  in allwinner_sun8i_emac_transmit()
535         if (desc.status2 & TX_DESC_STATUS2_LAST_DESC) {  in allwinner_sun8i_emac_transmit()
536             if (desc.status2 & TX_DESC_STATUS2_CHECKSUM_MASK) {  in allwinner_sun8i_emac_transmit()
541             trace_allwinner_sun8i_emac_transmit(s->tx_desc_curr, desc.addr,  in allwinner_sun8i_emac_transmit()
547         s->tx_desc_curr = allwinner_sun8i_emac_next_desc(s, &desc);  in allwinner_sun8i_emac_transmit()
590     FrameDescriptor desc;  in allwinner_sun8i_emac_read()  local
651             allwinner_sun8i_emac_get_desc(s, &desc, s->tx_desc_curr);  in allwinner_sun8i_emac_read()
652             value = desc.addr;  in allwinner_sun8i_emac_read()
664             allwinner_sun8i_emac_get_desc(s, &desc, s->rx_desc_curr);  in allwinner_sun8i_emac_read()
665             value = desc.addr;  in allwinner_sun8i_emac_read()