diff options
| author | Iyappan Subramanian <isubramanian@apm.com> | 2016-04-29 18:10:13 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-02 20:47:54 (GMT) |
| commit | 2a37daa634416a617bb8e9032626ab491004e7da (patch) | |
| tree | a7f3001451dce7fece3b95f0f9e78b5992d80b23 | |
| parent | 582a1db98892ef4c1f34c7338b272331994d44ab (diff) | |
| download | linux-2a37daa634416a617bb8e9032626ab491004e7da.tar.xz | |
drivers: net: xgene: Get channel number from device binding
This patch gets ethernet to CPU channel (prefetch buffer number) from
the newly added 'channel' property, thus decoupling Linux driver from
resource management.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 8d4c1ad..409152b 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -973,6 +973,17 @@ static enum xgene_ring_owner xgene_derive_ring_owner(struct xgene_enet_pdata *p) return owner; } +static u8 xgene_start_cpu_bufnum(struct xgene_enet_pdata *pdata) +{ + struct device *dev = &pdata->pdev->dev; + u32 cpu_bufnum; + int ret; + + ret = device_property_read_u32(dev, "channel", &cpu_bufnum); + + return (!ret) ? cpu_bufnum : pdata->cpu_bufnum; +} + static int xgene_enet_create_desc_rings(struct net_device *ndev) { struct xgene_enet_pdata *pdata = netdev_priv(ndev); @@ -981,13 +992,15 @@ static int xgene_enet_create_desc_rings(struct net_device *ndev) struct xgene_enet_desc_ring *buf_pool = NULL; enum xgene_ring_owner owner; dma_addr_t dma_exp_bufs; - u8 cpu_bufnum = pdata->cpu_bufnum; + u8 cpu_bufnum; u8 eth_bufnum = pdata->eth_bufnum; u8 bp_bufnum = pdata->bp_bufnum; u16 ring_num = pdata->ring_num; u16 ring_id; int i, ret, size; + cpu_bufnum = xgene_start_cpu_bufnum(pdata); + for (i = 0; i < pdata->rxq_cnt; i++) { /* allocate rx descriptor ring */ owner = xgene_derive_ring_owner(pdata); |