1 /* Applied Micro X-Gene SoC Ethernet Driver 2 * 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> 7 * 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. 12 * 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. 17 * 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/>. 20 */ 21 22 #ifndef __XGENE_ENET_MAIN_H__ 23 #define __XGENE_ENET_MAIN_H__ 24 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> 30 #include <net/ip.h> 31 #include <linux/prefetch.h> 32 #include <linux/if_vlan.h> 33 #include <linux/phy.h> 34 #include "xgene_enet_hw.h" 35 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 41 42 /* software context of a descriptor ring */ 43 struct xgene_enet_desc_ring { 44 struct net_device *ndev; 45 u16 id; 46 u16 num; 47 u16 head; 48 u16 tail; 49 u16 slots; 50 u16 irq; 51 u32 size; 52 u32 state[NUM_RING_CONFIG]; 53 void __iomem *cmd_base; 54 void __iomem *cmd; 55 dma_addr_t dma; 56 u16 dst_ring_num; 57 u8 nbufpool; 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; 64 union { 65 void *desc_addr; 66 struct xgene_enet_raw_desc *raw_desc; 67 struct xgene_enet_raw_desc16 *raw_desc16; 68 }; 69 }; 70 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; 76 int phy_speed; 77 struct clk *clk; 78 struct platform_device *pdev; 79 struct xgene_enet_desc_ring *tx_ring; 80 struct xgene_enet_desc_ring *rx_ring; 81 char *dev_name; 82 u32 rx_buff_cnt; 83 u32 tx_qcnt_hi; 84 u32 cp_qcnt_hi; 85 u32 cp_qcnt_low; 86 u32 rx_irq; 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; 96 u32 phy_addr; 97 int phy_mode; 98 u32 speed; 99 u16 rm; 100 struct rtnl_link_stats64 stats; 101 }; 102 103 /* Set the specified value into a bit-field defined by its starting position 104 * and length within a single u64. 105 */ 106 static inline u64 xgene_enet_set_field_value(int pos, int len, u64 val) 107 { 108 return (val & ((1ULL << len) - 1)) << pos; 109 } 110 111 #define SET_VAL(field, val) \ 112 xgene_enet_set_field_value(field ## _POS, field ## _LEN, val) 113 114 #define SET_BIT(field) \ 115 xgene_enet_set_field_value(field ## _POS, 1, 1) 116 117 /* Get the value from a bit-field defined by its starting position 118 * and length within the specified u64. 119 */ 120 static inline u64 xgene_enet_get_field_value(int pos, int len, u64 src) 121 { 122 return (src >> pos) & ((1ULL << len) - 1); 123 } 124 125 #define GET_VAL(field, src) \ 126 xgene_enet_get_field_value(field ## _POS, field ## _LEN, src) 127 128 static inline struct device *ndev_to_dev(struct net_device *ndev) 129 { 130 return ndev->dev.parent; 131 } 132 133 void xgene_enet_set_ethtool_ops(struct net_device *netdev); 134 135 #endif /* __XGENE_ENET_MAIN_H__ */ 136