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gerrit-public.fairphone.software / kernel / msm-4.9 / 37868fe113ff2ba814b3b4eb12df214df555f8dc / . / drivers / net / ethernet / ti / netcp.h
blob: bbacf5cccec2fcbc3831e8f61b559d51a5211816 [file] [log] [blame]
Karicheri, Muralidharan84640e22015-01-15 19:12:50 -0500[diff] [blame]1/*
2 * NetCP driver local header
3 *
4 * Copyright (C) 2014 Texas Instruments Incorporated
5 * Authors: Sandeep Nair <sandeep_n@ti.com>
6 * Sandeep Paulraj <s-paulraj@ti.com>
7 * Cyril Chemparathy <cyril@ti.com>
8 * Santosh Shilimkar <santosh.shilimkar@ti.com>
9 * Wingman Kwok <w-kwok2@ti.com>
10 * Murali Karicheri <m-karicheri2@ti.com>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation version 2.
15 *
16 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
17 * kind, whether express or implied; without even the implied warranty
18 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 */
21#ifndef __NETCP_H__
22#define __NETCP_H__
23
24#include <linux/netdevice.h>
25#include <linux/soc/ti/knav_dma.h>
26
27/* Maximum Ethernet frame size supported by Keystone switch */
28#define NETCP_MAX_FRAME_SIZE 9504
29
30#define SGMII_LINK_MAC_MAC_AUTONEG 0
31#define SGMII_LINK_MAC_PHY 1
32#define SGMII_LINK_MAC_MAC_FORCED 2
33#define SGMII_LINK_MAC_FIBER 3
34#define SGMII_LINK_MAC_PHY_NO_MDIO 4
35#define XGMII_LINK_MAC_PHY 10
36#define XGMII_LINK_MAC_MAC_FORCED 11
37
38struct netcp_device;
39
40struct netcp_tx_pipe {
41 struct netcp_device *netcp_device;
42 void *dma_queue;
43 unsigned int dma_queue_id;
Karicheri, Muralidharane170f402015-03-20 16:11:21 -0400[diff] [blame]44 /* To port for packet forwarded to switch. Used only by ethss */
45 u8 switch_to_port;
46#define SWITCH_TO_PORT_IN_TAGINFO BIT(0)
47 u8 flags;
Karicheri, Muralidharan84640e22015-01-15 19:12:50 -0500[diff] [blame]48 void *dma_channel;
49 const char *dma_chan_name;
50};
51
52#define ADDR_NEW BIT(0)
53#define ADDR_VALID BIT(1)
54
55enum netcp_addr_type {
56 ADDR_ANY,
57 ADDR_DEV,
58 ADDR_UCAST,
59 ADDR_MCAST,
60 ADDR_BCAST
61};
62
63struct netcp_addr {
64 struct netcp_intf *netcp;
65 unsigned char addr[ETH_ALEN];
66 enum netcp_addr_type type;
67 unsigned int flags;
68 struct list_head node;
69};
70
71struct netcp_intf {
72 struct device *dev;
73 struct device *ndev_dev;
74 struct net_device *ndev;
75 bool big_endian;
76 unsigned int tx_compl_qid;
77 void *tx_pool;
78 struct list_head txhook_list_head;
79 unsigned int tx_pause_threshold;
80 void *tx_compl_q;
81
82 unsigned int tx_resume_threshold;
83 void *rx_queue;
84 void *rx_pool;
85 struct list_head rxhook_list_head;
86 unsigned int rx_queue_id;
87 void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
88 u32 rx_buffer_sizes[KNAV_DMA_FDQ_PER_CHAN];
89 struct napi_struct rx_napi;
90 struct napi_struct tx_napi;
91
92 void *rx_channel;
93 const char *dma_chan_name;
94 u32 rx_pool_size;
95 u32 rx_pool_region_id;
96 u32 tx_pool_size;
97 u32 tx_pool_region_id;
98 struct list_head module_head;
99 struct list_head interface_list;
100 struct list_head addr_list;
101 bool netdev_registered;
102 bool primary_module_attached;
103
104 /* Lock used for protecting Rx/Tx hook list management */
105 spinlock_t lock;
106 struct netcp_device *netcp_device;
107 struct device_node *node_interface;
108
109 /* DMA configuration data */
110 u32 msg_enable;
111 u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
112};
113
114#define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
115struct netcp_packet {
116 struct sk_buff *skb;
117 u32 *epib;
118 u32 *psdata;
119 unsigned int psdata_len;
120 struct netcp_intf *netcp;
121 struct netcp_tx_pipe *tx_pipe;
122 bool rxtstamp_complete;
123 void *ts_context;
124
125 int (*txtstamp_complete)(void *ctx, struct netcp_packet *pkt);
126};
127
128static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
129 unsigned int bytes)
130{
131 u32 *buf;
132 unsigned int words;
133
134 if ((bytes & 0x03) != 0)
135 return NULL;
136 words = bytes >> 2;
137
138 if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
139 return NULL;
140
141 p_info->psdata_len += words;
142 buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
143 return buf;
144}
145
146static inline int netcp_align_psdata(struct netcp_packet *p_info,
147 unsigned int byte_align)
148{
149 int padding;
150
151 switch (byte_align) {
152 case 0:
153 padding = -EINVAL;
154 break;
155 case 1:
156 case 2:
157 case 4:
158 padding = 0;
159 break;
160 case 8:
161 padding = (p_info->psdata_len << 2) % 8;
162 break;
163 case 16:
164 padding = (p_info->psdata_len << 2) % 16;
165 break;
166 default:
167 padding = (p_info->psdata_len << 2) % byte_align;
168 break;
169 }
170 return padding;
171}
172
173struct netcp_module {
174 const char *name;
175 struct module *owner;
176 bool primary;
177
178 /* probe/remove: called once per NETCP instance */
179 int (*probe)(struct netcp_device *netcp_device,
180 struct device *device, struct device_node *node,
181 void **inst_priv);
182 int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
183
184 /* attach/release: called once per network interface */
185 int (*attach)(void *inst_priv, struct net_device *ndev,
186 struct device_node *node, void **intf_priv);
187 int (*release)(void *intf_priv);
188 int (*open)(void *intf_priv, struct net_device *ndev);
189 int (*close)(void *intf_priv, struct net_device *ndev);
190 int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
191 int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
192 int (*add_vid)(void *intf_priv, int vid);
193 int (*del_vid)(void *intf_priv, int vid);
194 int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
195
196 /* used internally */
197 struct list_head module_list;
198 struct list_head interface_list;
199};
200
201int netcp_register_module(struct netcp_module *module);
202void netcp_unregister_module(struct netcp_module *module);
203void *netcp_module_get_intf_data(struct netcp_module *module,
204 struct netcp_intf *intf);
205
206int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
207 struct netcp_device *netcp_device,
208 const char *dma_chan_name, unsigned int dma_queue_id);
209int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
210int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
211
212typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
213int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
214 netcp_hook_rtn *hook_rtn, void *hook_data);
215int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
216 netcp_hook_rtn *hook_rtn, void *hook_data);
217int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
218 netcp_hook_rtn *hook_rtn, void *hook_data);
219int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
220 netcp_hook_rtn *hook_rtn, void *hook_data);
221void *netcp_device_find_module(struct netcp_device *netcp_device,
222 const char *name);
223
224/* SGMII functions */
225int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
226int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
227int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
228
229/* XGBE SERDES init functions */
230int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
231
232#endif /* __NETCP_H__ */