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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__ */ |