target/linux/generic/patches-3.10/776-bgmac-add-dma-sync.patch

   1 From 88d0993dbe84a9b88212a4845fca28bf4c919ffb Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Tue, 26 Nov 2013 23:59:32 +0100
   4 Subject: [PATCH 14/16] bgmac: stuff
   5
   6 ---
   7  drivers/net/ethernet/broadcom/bgmac.c |    7 +++++++
   8  1 file changed, 7 insertions(+)
   9
  10 --- a/drivers/net/ethernet/broadcom/bgmac.c
  11 +++ b/drivers/net/ethernet/broadcom/bgmac.c
  12 @@ -123,6 +123,7 @@ static netdev_tx_t bgmac_dma_tx_add(stru
  13         struct net_device *net_dev = bgmac->net_dev;
  14         struct bgmac_dma_desc *dma_desc;
  15         struct bgmac_slot_info *slot;
  16 +       int size = ring->num_slots * sizeof(struct bgmac_dma_desc);
  17         u32 ctl0, ctl1;
  18         int free_slots;
  19
  20 @@ -163,6 +164,8 @@ static netdev_tx_t bgmac_dma_tx_add(stru
  21         dma_desc->ctl0 = cpu_to_le32(ctl0);
  22         dma_desc->ctl1 = cpu_to_le32(ctl1);
  23
  24 +       dma_sync_single_for_device(dma_dev, ring->dma_base, size, DMA_TO_DEVICE);
  25 +
  26         netdev_sent_queue(net_dev, skb->len);
  27
  28         wmb();
  29 @@ -313,6 +316,8 @@ static void bgmac_dma_rx_setup_desc(stru
  30                                     struct bgmac_dma_ring *ring, int desc_idx)
  31  {
  32         struct bgmac_dma_desc *dma_desc = ring->cpu_base + desc_idx;
  33 +       struct device *dma_dev = bgmac->core->dma_dev;
  34 +       int size = ring->num_slots * sizeof(struct bgmac_dma_desc);
  35         u32 ctl0 = 0, ctl1 = 0;
  36
  37         if (desc_idx == ring->num_slots - 1)
  38 @@ -327,6 +332,8 @@ static void bgmac_dma_rx_setup_desc(stru
  39         dma_desc->addr_high = cpu_to_le32(upper_32_bits(ring->slots[desc_idx].dma_addr));
  40         dma_desc->ctl0 = cpu_to_le32(ctl0);
  41         dma_desc->ctl1 = cpu_to_le32(ctl1);
  42 +
  43 +       dma_sync_single_for_device(dma_dev, ring->dma_base, size, DMA_TO_DEVICE);
  44  }
  45
  46  static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring,