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| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2019-06-28 09:29:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-06-28 09:23:39 -0700 |
| commit | a993db88d17d20ccf77f7e609935f28bb9bca1c2 (patch) | |
| tree | 7efb27e0dc82922783d3a2f087f978abc809c2ff /drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c | |
| parent | a66b58849ffe611402e6c144db010e3bf05863ed (diff) | |
| download | lwn-a993db88d17d20ccf77f7e609935f28bb9bca1c2.tar.gz lwn-a993db88d17d20ccf77f7e609935f28bb9bca1c2.zip | |
net: stmmac: Enable support for > 32 Bits addressing in XGMAC
Currently, stmmac only supports 32 bits addressing for SKB. Enable the
support for upto 48 bits addressing in XGMAC core.
This avoids the use of bounce buffers and increases performance.
Changes from v1:
- Fallback to 32 bits in failure (Andrew)
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c index 98fa471da7c0..c4c45402b8f8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c @@ -242,8 +242,8 @@ static void dwxgmac2_get_addr(struct dma_desc *p, unsigned int *addr) static void dwxgmac2_set_addr(struct dma_desc *p, dma_addr_t addr) { - p->des0 = cpu_to_le32(addr); - p->des1 = 0; + p->des0 = cpu_to_le32(lower_32_bits(addr)); + p->des1 = cpu_to_le32(upper_32_bits(addr)); } static void dwxgmac2_clear(struct dma_desc *p) |