#define TX_DMA_DESP2_DEF (TX_DMA_LS0 | TX_DMA_DONE)
#define TX_DMA_DESP4_DEF (TX_DMA_QN(3) | TX_DMA_PN(1))
#define NEXT_TX_DESP_IDX(X) (((X) + 1) & (ring->tx_ring_size - 1))
-#define NEXT_RX_DESP_IDX(X) (((X) + 1) & (priv->rx_ring_size - 1))
+#define NEXT_RX_DESP_IDX(X) (((X) + 1) & (ring->rx_ring_size - 1))
#define SYSC_REG_RSTCTRL 0x34
static void fe_clean_rx(struct fe_priv *priv)
{
int i;
+ struct fe_rx_ring *ring = &priv->rx_ring;
- if (priv->rx_data) {
- for (i = 0; i < priv->rx_ring_size; i++)
- if (priv->rx_data[i]) {
- if (priv->rx_dma && priv->rx_dma[i].rxd1)
+ if (ring->rx_data) {
+ for (i = 0; i < ring->rx_ring_size; i++)
+ if (ring->rx_data[i]) {
+ if (ring->rx_dma && ring->rx_dma[i].rxd1)
dma_unmap_single(&priv->netdev->dev,
- priv->rx_dma[i].rxd1,
- priv->rx_buf_size,
+ ring->rx_dma[i].rxd1,
+ ring->rx_buf_size,
DMA_FROM_DEVICE);
- put_page(virt_to_head_page(priv->rx_data[i]));
+ put_page(virt_to_head_page(ring->rx_data[i]));
}
- kfree(priv->rx_data);
- priv->rx_data = NULL;
+ kfree(ring->rx_data);
+ ring->rx_data = NULL;
}
- if (priv->rx_dma) {
+ if (ring->rx_dma) {
dma_free_coherent(&priv->netdev->dev,
- priv->rx_ring_size * sizeof(*priv->rx_dma),
- priv->rx_dma,
- priv->rx_phys);
- priv->rx_dma = NULL;
+ ring->rx_ring_size * sizeof(*ring->rx_dma),
+ ring->rx_dma,
+ ring->rx_phys);
+ ring->rx_dma = NULL;
}
}
static int fe_alloc_rx(struct fe_priv *priv)
{
struct net_device *netdev = priv->netdev;
+ struct fe_rx_ring *ring = &priv->rx_ring;
int i, pad;
- priv->rx_data = kcalloc(priv->rx_ring_size, sizeof(*priv->rx_data),
+ ring->rx_data = kcalloc(ring->rx_ring_size, sizeof(*ring->rx_data),
GFP_KERNEL);
- if (!priv->rx_data)
+ if (!ring->rx_data)
goto no_rx_mem;
- for (i = 0; i < priv->rx_ring_size; i++) {
- priv->rx_data[i] = netdev_alloc_frag(priv->frag_size);
- if (!priv->rx_data[i])
+ for (i = 0; i < ring->rx_ring_size; i++) {
+ ring->rx_data[i] = netdev_alloc_frag(ring->frag_size);
+ if (!ring->rx_data[i])
goto no_rx_mem;
}
- priv->rx_dma = dma_alloc_coherent(&netdev->dev,
- priv->rx_ring_size * sizeof(*priv->rx_dma),
- &priv->rx_phys,
+ ring->rx_dma = dma_alloc_coherent(&netdev->dev,
+ ring->rx_ring_size * sizeof(*ring->rx_dma),
+ &ring->rx_phys,
GFP_ATOMIC | __GFP_ZERO);
- if (!priv->rx_dma)
+ if (!ring->rx_dma)
goto no_rx_mem;
if (priv->flags & FE_FLAG_RX_2B_OFFSET)
pad = 0;
else
pad = NET_IP_ALIGN;
- for (i = 0; i < priv->rx_ring_size; i++) {
+ for (i = 0; i < ring->rx_ring_size; i++) {
dma_addr_t dma_addr = dma_map_single(&netdev->dev,
- priv->rx_data[i] + NET_SKB_PAD + pad,
- priv->rx_buf_size,
+ ring->rx_data[i] + NET_SKB_PAD + pad,
+ ring->rx_buf_size,
DMA_FROM_DEVICE);
if (unlikely(dma_mapping_error(&netdev->dev, dma_addr)))
goto no_rx_mem;
- priv->rx_dma[i].rxd1 = (unsigned int) dma_addr;
+ ring->rx_dma[i].rxd1 = (unsigned int) dma_addr;
if (priv->flags & FE_FLAG_RX_SG_DMA)
- priv->rx_dma[i].rxd2 = RX_DMA_PLEN0(priv->rx_buf_size);
+ ring->rx_dma[i].rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
else
- priv->rx_dma[i].rxd2 = RX_DMA_LSO;
+ ring->rx_dma[i].rxd2 = RX_DMA_LSO;
}
+ ring->rx_calc_idx = ring->rx_ring_size - 1;
wmb();
- fe_reg_w32(priv->rx_phys, FE_REG_RX_BASE_PTR0);
- fe_reg_w32(priv->rx_ring_size, FE_REG_RX_MAX_CNT0);
- fe_reg_w32((priv->rx_ring_size - 1), FE_REG_RX_CALC_IDX0);
+ fe_reg_w32(ring->rx_phys, FE_REG_RX_BASE_PTR0);
+ fe_reg_w32(ring->rx_ring_size, FE_REG_RX_MAX_CNT0);
+ fe_reg_w32(ring->rx_calc_idx, FE_REG_RX_CALC_IDX0);
fe_reg_w32(FE_PST_DRX_IDX0, FE_REG_PDMA_RST_CFG);
return 0;
struct net_device *netdev = priv->netdev;
struct net_device_stats *stats = &netdev->stats;
struct fe_soc_data *soc = priv->soc;
+ struct fe_rx_ring *ring = &priv->rx_ring;
+ int idx = ring->rx_calc_idx;
u32 checksum_bit;
- int idx = fe_reg_r32(FE_REG_RX_CALC_IDX0);
struct sk_buff *skb;
u8 *data, *new_data;
struct fe_rx_dma *rxd, trxd;
unsigned int pktlen;
dma_addr_t dma_addr;
idx = NEXT_RX_DESP_IDX(idx);
- rxd = &priv->rx_dma[idx];
- data = priv->rx_data[idx];
+ rxd = &ring->rx_dma[idx];
+ data = ring->rx_data[idx];
fe_get_rxd(&trxd, rxd);
if (!(trxd.rxd2 & RX_DMA_DONE))
break;
/* alloc new buffer */
- new_data = netdev_alloc_frag(priv->frag_size);
+ new_data = netdev_alloc_frag(ring->frag_size);
if (unlikely(!new_data)) {
stats->rx_dropped++;
goto release_desc;
}
dma_addr = dma_map_single(&netdev->dev,
new_data + NET_SKB_PAD + pad,
- priv->rx_buf_size,
+ ring->rx_buf_size,
DMA_FROM_DEVICE);
if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) {
put_page(virt_to_head_page(new_data));
}
/* receive data */
- skb = build_skb(data, priv->frag_size);
+ skb = build_skb(data, ring->frag_size);
if (unlikely(!skb)) {
put_page(virt_to_head_page(new_data));
goto release_desc;
skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
dma_unmap_single(&netdev->dev, trxd.rxd1,
- priv->rx_buf_size, DMA_FROM_DEVICE);
+ ring->rx_buf_size, DMA_FROM_DEVICE);
pktlen = RX_DMA_PLEN0(trxd.rxd2);
skb->dev = netdev;
skb_put(skb, pktlen);
napi_gro_receive(napi, skb);
- priv->rx_data[idx] = new_data;
+ ring->rx_data[idx] = new_data;
rxd->rxd1 = (unsigned int) dma_addr;
release_desc:
if (priv->flags & FE_FLAG_RX_SG_DMA)
- rxd->rxd2 = RX_DMA_PLEN0(priv->rx_buf_size);
+ rxd->rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
else
rxd->rxd2 = RX_DMA_LSO;
+ ring->rx_calc_idx = idx;
wmb();
- fe_reg_w32(idx, FE_REG_RX_CALC_IDX0);
+ fe_reg_w32(ring->rx_calc_idx, FE_REG_RX_CALC_IDX0);
done++;
}
return 0;
if (new_mtu <= ETH_DATA_LEN)
- priv->frag_size = fe_max_frag_size(ETH_DATA_LEN);
+ priv->rx_ring.frag_size = fe_max_frag_size(ETH_DATA_LEN);
else
- priv->frag_size = PAGE_SIZE;
- priv->rx_buf_size = fe_max_buf_size(priv->frag_size);
+ priv->rx_ring.frag_size = PAGE_SIZE;
+ priv->rx_ring.rx_buf_size = fe_max_buf_size(priv->rx_ring.frag_size);
if (!netif_running(dev))
return 0;
priv->device = &pdev->dev;
priv->soc = soc;
priv->msg_enable = netif_msg_init(fe_msg_level, FE_DEFAULT_MSG_ENABLE);
- priv->frag_size = fe_max_frag_size(ETH_DATA_LEN);
- priv->rx_buf_size = fe_max_buf_size(priv->frag_size);
- priv->tx_ring.tx_ring_size = priv->rx_ring_size = NUM_DMA_DESC;
+ priv->rx_ring.frag_size = fe_max_frag_size(ETH_DATA_LEN);
+ priv->rx_ring.rx_buf_size = fe_max_buf_size(priv->rx_ring.frag_size);
+ priv->tx_ring.tx_ring_size = priv->rx_ring.rx_ring_size = NUM_DMA_DESC;
INIT_WORK(&priv->pending_work, fe_pending_work);
napi_weight = 32;
if (priv->flags & FE_FLAG_NAPI_WEIGHT) {
napi_weight *= 4;
priv->tx_ring.tx_ring_size *= 4;
- priv->rx_ring_size *= 4;
+ priv->rx_ring.rx_ring_size *= 4;
}
netif_napi_add(netdev, &priv->rx_napi, fe_poll, napi_weight);
fe_set_ethtool_ops(netdev);
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