diff options
| author |   Iyappan Subramanian <isubramanian@apm.com> | 2017-03-21 18:18:04 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-03-22 19:17:14 -0700 |
| commit | b2180a8f28dbd66d6593a70ead791ad9b347bc74 (patch) | |
| tree | fbed0faac827230282f2ac5ee82629489b28ac6e /drivers/net | |
| parent | drivers: net: xgene-v2: Add ethtool support (diff) | |
| download | linux-dev-b2180a8f28dbd66d6593a70ead791ad9b347bc74.tar.xz linux-dev-b2180a8f28dbd66d6593a70ead791ad9b347bc74.zip | |
drivers: net: xgene-v2: Fix port reset
Fixed port reset sequence by adding ECC init.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene-v2/enet.c | 24 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene-v2/enet.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene-v2/mac.h | 1 |
3 files changed, 20 insertions, 7 deletions
diff --git a/drivers/net/ethernet/apm/xgene-v2/enet.c b/drivers/net/ethernet/apm/xgene-v2/enet.c index b49edeeb6275..5998da014923 100644 --- a/drivers/net/ethernet/apm/xgene-v2/enet.c +++ b/drivers/net/ethernet/apm/xgene-v2/enet.c @@ -38,10 +38,24 @@ u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset) int xge_port_reset(struct net_device *ndev) { struct xge_pdata *pdata = netdev_priv(ndev); + struct device *dev = &pdata->pdev->dev; + u32 data, wait = 10; - xge_wr_csr(pdata, ENET_SRST, 0x3); - xge_wr_csr(pdata, ENET_SRST, 0x2); - xge_wr_csr(pdata, ENET_SRST, 0x0); + xge_wr_csr(pdata, ENET_CLKEN, 0x3); + xge_wr_csr(pdata, ENET_SRST, 0xf); + xge_wr_csr(pdata, ENET_SRST, 0); + xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 1); + xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 0); + + do { + usleep_range(100, 110); + data = xge_rd_csr(pdata, BLOCK_MEM_RDY); + } while (data != MEM_RDY && wait--); + + if (data != MEM_RDY) { + dev_err(dev, "ECC init failed: %x\n", data); + return -ETIMEDOUT; + } xge_wr_csr(pdata, ENET_SHIM, DEVM_ARAUX_COH | DEVM_AWAUX_COH); @@ -59,13 +73,11 @@ static void xge_traffic_resume(struct net_device *ndev) xge_wr_csr(pdata, RX_DV_GATE_REG, 1); } -int xge_port_init(struct net_device *ndev) +void xge_port_init(struct net_device *ndev) { struct xge_pdata *pdata = netdev_priv(ndev); pdata->phy_speed = SPEED_1000; xge_mac_init(pdata); xge_traffic_resume(ndev); - - return 0; } diff --git a/drivers/net/ethernet/apm/xgene-v2/enet.h b/drivers/net/ethernet/apm/xgene-v2/enet.h index 40371cfcfce4..3fd36dc66a23 100644 --- a/drivers/net/ethernet/apm/xgene-v2/enet.h +++ b/drivers/net/ethernet/apm/xgene-v2/enet.h @@ -28,6 +28,7 @@ #define CFG_MEM_RAM_SHUTDOWN 0xd070 #define BLOCK_MEM_RDY 0xd074 +#define MEM_RDY 0xffffffff #define DEVM_ARAUX_COH BIT(19) #define DEVM_AWAUX_COH BIT(3) @@ -39,5 +40,6 @@ void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val); u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset); int xge_port_reset(struct net_device *ndev); +void xge_port_init(struct net_device *ndev); #endif /* __XGENE_ENET_V2_ENET__H__ */ diff --git a/drivers/net/ethernet/apm/xgene-v2/mac.h b/drivers/net/ethernet/apm/xgene-v2/mac.h index 74397c961fa4..18a9c9d8a5e5 100644 --- a/drivers/net/ethernet/apm/xgene-v2/mac.h +++ b/drivers/net/ethernet/apm/xgene-v2/mac.h @@ -105,7 +105,6 @@ void xge_mac_set_speed(struct xge_pdata *pdata); void xge_mac_enable(struct xge_pdata *pdata); void xge_mac_disable(struct xge_pdata *pdata); void xge_mac_init(struct xge_pdata *pdata); -int xge_port_init(struct net_device *ndev); void xge_mac_set_station_addr(struct xge_pdata *pdata); #endif /* __XGENE_ENET_V2_MAC_H__ */ |