diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2015-11-22 19:07:00 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2015-11-22 19:07:00 +0000 |
| commit | a32f301b62a6f8b6fd8b09363b0e4e608c43f1b0 (patch) | |
| tree | dfc1391b292695a6bd0792410424f109d54e078d /target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch | |
| parent | 3789b1f5a0760bce2f56993685a3f7e7202d41d0 (diff) | |
| download | upstream-a32f301b62a6f8b6fd8b09363b0e4e608c43f1b0.tar.gz upstream-a32f301b62a6f8b6fd8b09363b0e4e608c43f1b0.tar.bz2 upstream-a32f301b62a6f8b6fd8b09363b0e4e608c43f1b0.zip | |
ipq806x: fix a nasty stmmac data corruption bug caused by faulty DMA initialization
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 47594
Diffstat (limited to 'target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch b/target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch new file mode 100644 index 0000000000..c09793f53d --- /dev/null +++ b/target/linux/ipq806x/patches-3.18/710-stmmac-fix-ipq806x-DMA-configuration.patch @@ -0,0 +1,39 @@ +--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c ++++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c +@@ -259,6 +259,7 @@ static int ipq806x_gmac_probe(struct pla + { + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; ++ struct stmmac_dma_cfg *dma_cfg; + struct device *dev = &pdev->dev; + struct ipq806x_gmac *gmac; + int val; +@@ -348,6 +349,16 @@ static int ipq806x_gmac_probe(struct pla + plat_dat->bsp_priv = gmac; + plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed; + ++ dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), ++ GFP_KERNEL); ++ ++ dma_cfg->pbl = 32; ++ dma_cfg->burst_len = DMA_AXI_BLEN_16 | ++ (7 << DMA_AXI_RD_OSR_LMT_SHIFT) | ++ (7 << DMA_AXI_WR_OSR_LMT_SHIFT); ++ ++ plat_dat->dma_cfg = dma_cfg; ++ + return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); + } + +--- a/include/linux/stmmac.h ++++ b/include/linux/stmmac.h +@@ -73,6 +73,9 @@ + | DMA_AXI_BLEN_32 | DMA_AXI_BLEN_64 \ + | DMA_AXI_BLEN_128 | DMA_AXI_BLEN_256) + ++#define DMA_AXI_RD_OSR_LMT_SHIFT 16 ++#define DMA_AXI_WR_OSR_LMT_SHIFT 20 ++ + /* Platfrom data for platform device structure's platform_data field */ + + struct stmmac_mdio_bus_data { |