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Signed-off-by: Ioana Radulescu --- drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 31 ++++++++++++-------------- drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h | 6 +++++ 2 files changed, 20 insertions(+), 17 deletions(-) diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c index 025b5f6559a4..d81c56f4d859 100644 --- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c +++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c @@ -227,6 +227,7 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv, struct dpaa2_eth_drv_stats *percpu_extras; struct device *dev = priv->net_dev->dev.parent; struct dpaa2_fas *fas; + void *buf_data; u32 status = 0; /* Tracing point */ @@ -235,8 +236,10 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv, vaddr = dpaa2_iova_to_virt(priv->iommu_domain, addr); dma_unmap_single(dev, addr, DPAA2_ETH_RX_BUF_SIZE, DMA_FROM_DEVICE); - prefetch(vaddr + priv->buf_layout.private_data_size); - prefetch(vaddr + dpaa2_fd_get_offset(fd)); + fas = dpaa2_get_fas(vaddr); + prefetch(fas); + buf_data = vaddr + dpaa2_fd_get_offset(fd); + prefetch(buf_data); percpu_stats = this_cpu_ptr(priv->percpu_stats); percpu_extras = this_cpu_ptr(priv->percpu_extras); @@ -244,9 +247,7 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv, if (fd_format == dpaa2_fd_single) { skb = build_linear_skb(priv, ch, fd, vaddr); } else if (fd_format == dpaa2_fd_sg) { - struct dpaa2_sg_entry *sgt = - vaddr + dpaa2_fd_get_offset(fd); - skb = build_frag_skb(priv, ch, sgt); + skb = build_frag_skb(priv, ch, buf_data); skb_free_frag(vaddr); percpu_extras->rx_sg_frames++; percpu_extras->rx_sg_bytes += dpaa2_fd_get_len(fd); @@ -262,8 +263,6 @@ static void dpaa2_eth_rx(struct dpaa2_eth_priv *priv, /* Check if we need to validate the L4 csum */ if (likely(dpaa2_fd_get_frc(fd) & DPAA2_FD_FRC_FASV)) { - fas = (struct dpaa2_fas *) - (vaddr + priv->buf_layout.private_data_size); status = le32_to_cpu(fas->status); validate_rx_csum(priv, status, skb); } @@ -327,7 +326,6 @@ static int build_sg_fd(struct dpaa2_eth_priv *priv, { struct device *dev = priv->net_dev->dev.parent; void *sgt_buf = NULL; - void *hwa; dma_addr_t addr; int nr_frags = skb_shinfo(skb)->nr_frags; struct dpaa2_sg_entry *sgt; @@ -337,6 +335,7 @@ static int build_sg_fd(struct dpaa2_eth_priv *priv, int num_sg; int num_dma_bufs; struct dpaa2_eth_swa *swa; + struct dpaa2_fas *fas; /* Create and map scatterlist. * We don't advertise NETIF_F_FRAGLIST, so skb_to_sgvec() will not have @@ -373,8 +372,8 @@ static int build_sg_fd(struct dpaa2_eth_priv *priv, * on TX confirmation. We are clearing FAS (Frame Annotation Status) * field from the hardware annotation area */ - hwa = sgt_buf + priv->buf_layout.private_data_size; - memset(hwa + DPAA2_FAS_OFFSET, 0, DPAA2_FAS_SIZE); + fas = dpaa2_get_fas(sgt_buf); + memset(fas, 0, DPAA2_FAS_SIZE); sgt = (struct dpaa2_sg_entry *)(sgt_buf + priv->tx_data_offset); @@ -433,7 +432,7 @@ static int build_single_fd(struct dpaa2_eth_priv *priv, { struct device *dev = priv->net_dev->dev.parent; u8 *buffer_start; - void *hwa; + struct dpaa2_fas *fas; struct sk_buff **skbh; dma_addr_t addr; @@ -446,8 +445,8 @@ static int build_single_fd(struct dpaa2_eth_priv *priv, * on TX confirmation. We are clearing FAS (Frame Annotation Status) * field from the hardware annotation area */ - hwa = buffer_start + priv->buf_layout.private_data_size; - memset(hwa + DPAA2_FAS_OFFSET, 0, DPAA2_FAS_SIZE); + fas = dpaa2_get_fas(buffer_start); + memset(fas, 0, DPAA2_FAS_SIZE); /* Store a backpointer to the skb at the beginning of the buffer * (in the private data area) such that we can release it @@ -498,6 +497,7 @@ static void free_tx_fd(const struct dpaa2_eth_priv *priv, fd_addr = dpaa2_fd_get_addr(fd); skbh = dpaa2_iova_to_virt(priv->iommu_domain, fd_addr); + fas = dpaa2_get_fas(skbh); if (fd_format == dpaa2_fd_single) { skb = *skbh; @@ -534,11 +534,8 @@ static void free_tx_fd(const struct dpaa2_eth_priv *priv, * buffer but before we free it. The caller function is responsible * for checking the status value. */ - if (status && (dpaa2_fd_get_frc(fd) & DPAA2_FD_FRC_FASV)) { - fas = (struct dpaa2_fas *) - ((void *)skbh + priv->buf_layout.private_data_size); + if (status && (dpaa2_fd_get_frc(fd) & DPAA2_FD_FRC_FASV)) *status = le32_to_cpu(fas->status); - } /* Free SGT buffer kmalloc'ed on tx */ if (fd_format != dpaa2_fd_single) diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h index 539da71470d9..6462e2cbe4be 100644 --- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h +++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.h @@ -139,6 +139,12 @@ struct dpaa2_fas { #define DPAA2_FAS_OFFSET 0 #define DPAA2_FAS_SIZE (sizeof(struct dpaa2_fas)) +/* Accessors for the hardware annotation fields that we use */ +#define dpaa2_get_hwa(buf_addr) \ + ((void *)(buf_addr) + DPAA2_ETH_SWA_SIZE) +#define dpaa2_get_fas(buf_addr) \ + (struct dpaa2_fas *)(dpaa2_get_hwa(buf_addr) + DPAA2_FAS_OFFSET) + /* Error and status bits in the frame annotation status word */ /* Debug frame, otherwise supposed to be discarded */ #define DPAA2_FAS_DISC 0x80000000