1 /* Applied Micro X-Gene SoC Ethernet Driver
3 * Copyright (c) 2014, Applied Micro Circuits Corporation
4 * Authors: Iyappan Subramanian <isubramanian@apm.com>
5 * Ravi Patel <rapatel@apm.com>
6 * Keyur Chudgar <kchudgar@apm.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __XGENE_ENET_MAIN_H__
23 #define __XGENE_ENET_MAIN_H__
25 #include <linux/clk.h>
26 #include <linux/of_platform.h>
27 #include <linux/of_net.h>
28 #include <linux/of_mdio.h>
29 #include <linux/module.h>
31 #include <linux/prefetch.h>
32 #include <linux/if_vlan.h>
33 #include <linux/phy.h>
34 #include "xgene_enet_hw.h"
36 #define XGENE_DRV_VERSION "v1.0"
37 #define XGENE_ENET_MAX_MTU 1536
38 #define SKB_BUFFER_SIZE (XGENE_ENET_MAX_MTU - NET_IP_ALIGN)
39 #define NUM_PKT_BUF 64
40 #define NUM_BUFPOOL 32
42 /* software context of a descriptor ring */
43 struct xgene_enet_desc_ring {
44 struct net_device *ndev;
52 u32 state[NUM_RING_CONFIG];
53 void __iomem *cmd_base;
58 struct sk_buff *(*rx_skb);
59 struct sk_buff *(*cp_skb);
60 enum xgene_enet_ring_cfgsize cfgsize;
61 struct xgene_enet_desc_ring *cp_ring;
62 struct xgene_enet_desc_ring *buf_pool;
63 struct napi_struct napi;
66 struct xgene_enet_raw_desc *raw_desc;
67 struct xgene_enet_raw_desc16 *raw_desc16;
71 /* ethernet private data */
72 struct xgene_enet_pdata {
73 struct net_device *ndev;
74 struct mii_bus *mdio_bus;
75 struct phy_device *phy_dev;
78 struct platform_device *pdev;
79 struct xgene_enet_desc_ring *tx_ring;
80 struct xgene_enet_desc_ring *rx_ring;
87 void __iomem *eth_csr_addr;
88 void __iomem *eth_ring_if_addr;
89 void __iomem *eth_diag_csr_addr;
90 void __iomem *mcx_mac_addr;
91 void __iomem *mcx_stats_addr;
92 void __iomem *mcx_mac_csr_addr;
93 void __iomem *base_addr;
94 void __iomem *ring_csr_addr;
95 void __iomem *ring_cmd_addr;
100 struct rtnl_link_stats64 stats;
103 /* Set the specified value into a bit-field defined by its starting position
104 * and length within a single u64.
106 static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val)
108 return (val & ((1ULL << len) - 1)) << pos;
111 #define SET_VAL(field, val) \
112 xgene_enet_set_field_value(field ## _POS, field ## _LEN, val)
114 #define SET_BIT(field) \
115 xgene_enet_set_field_value(field ## _POS, 1, 1)
117 /* Get the value from a bit-field defined by its starting position
118 * and length within the specified u64.
120 static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src)
122 return (src >> pos) & ((1ULL << len) - 1);
125 #define GET_VAL(field, src) \
126 xgene_enet_get_field_value(field ## _POS, field ## _LEN, src)
128 static inline struct device *ndev_to_dev(struct net_device *ndev)
130 return ndev->dev.parent;
133 void xgene_enet_set_ethtool_ops(struct net_device *netdev);
135 #endif /* __XGENE_ENET_MAIN_H__ */