oki-semi/pch_gbe/pch_gbe_main.c

550 	adapter->tx_ring = devm_kzalloc(&adapter->pdev->dev,
551 					sizeof(*adapter->tx_ring), GFP_KERNEL);
552 	if (!adapter->tx_ring)
783 		   (unsigned long long)adapter->tx_ring->dma,
784 		   adapter->tx_ring->size);
787 	tdba = adapter->tx_ring->dma;
788 	tdlen = adapter->tx_ring->size - 0x10;
899  * @tx_ring:  Ring to be cleaned
902 				   struct pch_gbe_tx_ring *tx_ring)
910 	for (i = 0; i < tx_ring->count; i++) {
911 		buffer_info = &tx_ring->buffer_info[i];
917 	size = (unsigned long)sizeof(struct pch_gbe_buffer) * tx_ring->count;
918 	memset(tx_ring->buffer_info, 0, size);
921 	memset(tx_ring->desc, 0, tx_ring->size);
922 	tx_ring->next_to_use = 0;
923 	tx_ring->next_to_clean = 0;
924 	iowrite32(tx_ring->dma, &hw->reg->TX_DSC_HW_P);
925 	iowrite32((tx_ring->size - 0x10), &hw->reg->TX_DSC_SIZE);
1059  * @tx_ring:  Tx descriptor ring structure
1063 			      struct pch_gbe_tx_ring *tx_ring,
1119 	ring_num = tx_ring->next_to_use;
1120 	if (unlikely((ring_num + 1) == tx_ring->count))
1121 		tx_ring->next_to_use = 0;
1123 		tx_ring->next_to_use = ring_num + 1;
1126 	buffer_info = &tx_ring->buffer_info[ring_num];
1145 		tx_ring->next_to_use = ring_num;
1153 	tx_desc = PCH_GBE_TX_DESC(*tx_ring, ring_num);
1160 	if (unlikely(++ring_num == tx_ring->count))
1164 	iowrite32(tx_ring->dma +
1417  * @tx_ring:   Tx descriptor ring
1420 					struct pch_gbe_tx_ring *tx_ring)
1431 	for (i = 0; i < tx_ring->count; i++) {
1432 		buffer_info = &tx_ring->buffer_info[i];
1436 		tx_desc = PCH_GBE_TX_DESC(*tx_ring, i);
1445  * @tx_ring:   Tx descriptor ring
1452 		 struct pch_gbe_tx_ring *tx_ring)
1463 		   tx_ring->next_to_clean);
1465 	i = tx_ring->next_to_clean;
1466 	tx_desc = PCH_GBE_TX_DESC(*tx_ring, i);
1470 	unused = PCH_GBE_DESC_UNUSED(tx_ring);
1471 	thresh = tx_ring->count - NAPI_POLL_WEIGHT;
1478 				   tx_ring->next_to_clean, tx_ring->next_to_use,
1486 			tx_desc = PCH_GBE_TX_DESC(*tx_ring, k);
1488 			if (++k >= tx_ring->count) k = 0;  /*increment, wrap*/
1493 				   unused, j, i, k, tx_ring->next_to_use,
1502 		buffer_info = &tx_ring->buffer_info[i];
1544 		if (unlikely(++i == tx_ring->count))
1546 		tx_desc = PCH_GBE_TX_DESC(*tx_ring, i);
1567 		tx_ring->next_to_clean = i;
1570 			   tx_ring->next_to_clean);
1695  * @tx_ring:  Tx descriptor ring (for a specific queue) to setup
1701 				struct pch_gbe_tx_ring *tx_ring)
1708 	size = (int)sizeof(struct pch_gbe_buffer) * tx_ring->count;
1709 	tx_ring->buffer_info = vzalloc(size);
1710 	if (!tx_ring->buffer_info)
1713 	tx_ring->size = tx_ring->count * (int)sizeof(struct pch_gbe_tx_desc);
1715 	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
1716 					   &tx_ring->dma, GFP_KERNEL);
1717 	if (!tx_ring->desc) {
1718 		vfree(tx_ring->buffer_info);
1722 	tx_ring->next_to_use = 0;
1723 	tx_ring->next_to_clean = 0;
1725 	for (desNo = 0; desNo < tx_ring->count; desNo++) {
1726 		tx_desc = PCH_GBE_TX_DESC(*tx_ring, desNo);
1730 		   "tx_ring->desc = 0x%p  tx_ring->dma = 0x%08llx next_to_clean = 0x%08x  next_to_use = 0x%08x\n",
1731 		   tx_ring->desc, (unsigned long long)tx_ring->dma,
1732 		   tx_ring->next_to_clean, tx_ring->next_to_use);
1780  * @tx_ring:  Tx descriptor ring for a specific queue
1783 				struct pch_gbe_tx_ring *tx_ring)
1787 	pch_gbe_clean_tx_ring(adapter, tx_ring);
1788 	vfree(tx_ring->buffer_info);
1789 	tx_ring->buffer_info = NULL;
1790 	dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
1791 			  tx_ring->dma);
1792 	tx_ring->desc = NULL;
1851 	struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
1881 	pch_gbe_alloc_tx_buffers(adapter, tx_ring);
1927 	pch_gbe_clean_tx_ring(adapter, adapter->tx_ring);
1987 	err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring);
2006 	pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
2027 	pch_gbe_free_tx_resources(adapter, adapter->tx_ring);
2043 	struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
2045 	if (unlikely(!PCH_GBE_DESC_UNUSED(tx_ring))) {
2049 			   tx_ring->next_to_use, tx_ring->next_to_clean);
2054 	pch_gbe_tx_queue(adapter, tx_ring, skb);
2276 	cleaned = pch_gbe_clean_tx(adapter, adapter->tx_ring);