[PATCH v4 net-next 3/6] drivers: net: xgene-v2: Add ethernet hardware configuration
Iyappan Subramanian
isubramanian at apm.com
Tue Mar 7 17:08:42 PST 2017
This patch adds functions to configure ethernet hardware.
Signed-off-by: Iyappan Subramanian <isubramanian at apm.com>
Signed-off-by: Keyur Chudgar <kchudgar at apm.com>
---
drivers/net/ethernet/apm/xgene-v2/enet.c | 71 ++++++++++++++++++++++++++++++++
drivers/net/ethernet/apm/xgene-v2/enet.h | 43 +++++++++++++++++++
2 files changed, 114 insertions(+)
create mode 100644 drivers/net/ethernet/apm/xgene-v2/enet.c
create mode 100644 drivers/net/ethernet/apm/xgene-v2/enet.h
diff --git a/drivers/net/ethernet/apm/xgene-v2/enet.c b/drivers/net/ethernet/apm/xgene-v2/enet.c
new file mode 100644
index 0000000..b49edee
--- /dev/null
+++ b/drivers/net/ethernet/apm/xgene-v2/enet.c
@@ -0,0 +1,71 @@
+/*
+ * Applied Micro X-Gene SoC Ethernet v2 Driver
+ *
+ * Copyright (c) 2017, Applied Micro Circuits Corporation
+ * Author(s): Iyappan Subramanian <isubramanian at apm.com>
+ * Keyur Chudgar <kchudgar at apm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "main.h"
+
+void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val)
+{
+ void __iomem *addr = pdata->resources.base_addr + offset;
+
+ iowrite32(val, addr);
+}
+
+u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset)
+{
+ void __iomem *addr = pdata->resources.base_addr + offset;
+
+ return ioread32(addr);
+}
+
+int xge_port_reset(struct net_device *ndev)
+{
+ struct xge_pdata *pdata = netdev_priv(ndev);
+
+ 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_SHIM, DEVM_ARAUX_COH | DEVM_AWAUX_COH);
+
+ return 0;
+}
+
+static void xge_traffic_resume(struct net_device *ndev)
+{
+ struct xge_pdata *pdata = netdev_priv(ndev);
+
+ xge_wr_csr(pdata, CFG_FORCE_LINK_STATUS_EN, 1);
+ xge_wr_csr(pdata, FORCE_LINK_STATUS, 1);
+
+ xge_wr_csr(pdata, CFG_LINK_AGGR_RESUME, 1);
+ xge_wr_csr(pdata, RX_DV_GATE_REG, 1);
+}
+
+int 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
new file mode 100644
index 0000000..40371cf
--- /dev/null
+++ b/drivers/net/ethernet/apm/xgene-v2/enet.h
@@ -0,0 +1,43 @@
+/*
+ * Applied Micro X-Gene SoC Ethernet v2 Driver
+ *
+ * Copyright (c) 2017, Applied Micro Circuits Corporation
+ * Author(s): Iyappan Subramanian <isubramanian at apm.com>
+ * Keyur Chudgar <kchudgar at apm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __XGENE_ENET_V2_ENET_H__
+#define __XGENE_ENET_V2_ENET_H__
+
+#define ENET_CLKEN 0xc008
+#define ENET_SRST 0xc000
+#define ENET_SHIM 0xc010
+#define CFG_MEM_RAM_SHUTDOWN 0xd070
+#define BLOCK_MEM_RDY 0xd074
+
+#define DEVM_ARAUX_COH BIT(19)
+#define DEVM_AWAUX_COH BIT(3)
+
+#define CFG_FORCE_LINK_STATUS_EN 0x229c
+#define FORCE_LINK_STATUS 0x22a0
+#define CFG_LINK_AGGR_RESUME 0x27c8
+#define RX_DV_GATE_REG 0x2dfc
+
+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);
+
+#endif /* __XGENE_ENET_V2_ENET__H__ */
--
1.9.1
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