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authorIyappan Subramanian <isubramanian@apm.com>2017-03-21 18:18:04 -0700
committerDavid S. Miller <davem@davemloft.net>2017-03-22 19:17:14 -0700
commitb2180a8f28dbd66d6593a70ead791ad9b347bc74 (patch)
treefbed0faac827230282f2ac5ee82629489b28ac6e /drivers/net/ethernet/apm
parent617d795c7cb2d1b636db33d428f830f3ed18a36f (diff)
downloadlinux-b2180a8f28dbd66d6593a70ead791ad9b347bc74.tar.bz2
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/ethernet/apm')
-rw-r--r--drivers/net/ethernet/apm/xgene-v2/enet.c24
-rw-r--r--drivers/net/ethernet/apm/xgene-v2/enet.h2
-rw-r--r--drivers/net/ethernet/apm/xgene-v2/mac.h1
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__ */