2 * NetCP driver local header
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>
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.
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.
24 #include <linux/netdevice.h>
25 #include <linux/soc/ti/knav_dma.h>
26 #include <linux/u64_stats_sync.h>
28 /* Maximum Ethernet frame size supported by Keystone switch */
29 #define NETCP_MAX_FRAME_SIZE 9504
31 #define SGMII_LINK_MAC_MAC_AUTONEG 0
32 #define SGMII_LINK_MAC_PHY 1
33 #define SGMII_LINK_MAC_MAC_FORCED 2
34 #define SGMII_LINK_MAC_FIBER 3
35 #define SGMII_LINK_MAC_PHY_NO_MDIO 4
36 #define RGMII_LINK_MAC_PHY 5
37 #define RGMII_LINK_MAC_PHY_NO_MDIO 7
38 #define XGMII_LINK_MAC_PHY 10
39 #define XGMII_LINK_MAC_MAC_FORCED 11
43 struct netcp_tx_pipe {
44 struct netcp_device *netcp_device;
46 unsigned int dma_queue_id;
47 /* To port for packet forwarded to switch. Used only by ethss */
49 #define SWITCH_TO_PORT_IN_TAGINFO BIT(0)
52 const char *dma_chan_name;
55 #define ADDR_NEW BIT(0)
56 #define ADDR_VALID BIT(1)
58 enum netcp_addr_type {
67 struct netcp_intf *netcp;
68 unsigned char addr[ETH_ALEN];
69 enum netcp_addr_type type;
71 struct list_head node;
75 struct u64_stats_sync syncp_rx ____cacheline_aligned_in_smp;
81 struct u64_stats_sync syncp_tx ____cacheline_aligned_in_smp;
90 struct device *ndev_dev;
91 struct net_device *ndev;
93 unsigned int tx_compl_qid;
95 struct list_head txhook_list_head;
96 unsigned int tx_pause_threshold;
99 unsigned int tx_resume_threshold;
102 struct list_head rxhook_list_head;
103 unsigned int rx_queue_id;
104 void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
105 struct napi_struct rx_napi;
106 struct napi_struct tx_napi;
107 #define ETH_SW_CAN_REMOVE_ETH_FCS BIT(0)
110 /* 64-bit netcp stats */
111 struct netcp_stats stats;
114 const char *dma_chan_name;
116 u32 rx_pool_region_id;
118 u32 tx_pool_region_id;
119 struct list_head module_head;
120 struct list_head interface_list;
121 struct list_head addr_list;
122 bool netdev_registered;
123 bool primary_module_attached;
125 /* Lock used for protecting Rx/Tx hook list management */
127 struct netcp_device *netcp_device;
128 struct device_node *node_interface;
130 /* DMA configuration data */
132 u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
135 #define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
136 struct netcp_packet {
141 unsigned int psdata_len;
142 struct netcp_intf *netcp;
143 struct netcp_tx_pipe *tx_pipe;
144 bool rxtstamp_complete;
147 void (*txtstamp)(void *ctx, struct sk_buff *skb);
150 static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
156 if ((bytes & 0x03) != 0)
160 if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
163 p_info->psdata_len += words;
164 buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
168 static inline int netcp_align_psdata(struct netcp_packet *p_info,
169 unsigned int byte_align)
173 switch (byte_align) {
183 padding = (p_info->psdata_len << 2) % 8;
186 padding = (p_info->psdata_len << 2) % 16;
189 padding = (p_info->psdata_len << 2) % byte_align;
195 struct netcp_module {
197 struct module *owner;
200 /* probe/remove: called once per NETCP instance */
201 int (*probe)(struct netcp_device *netcp_device,
202 struct device *device, struct device_node *node,
204 int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
206 /* attach/release: called once per network interface */
207 int (*attach)(void *inst_priv, struct net_device *ndev,
208 struct device_node *node, void **intf_priv);
209 int (*release)(void *intf_priv);
210 int (*open)(void *intf_priv, struct net_device *ndev);
211 int (*close)(void *intf_priv, struct net_device *ndev);
212 int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
213 int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
214 int (*add_vid)(void *intf_priv, int vid);
215 int (*del_vid)(void *intf_priv, int vid);
216 int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
218 /* used internally */
219 struct list_head module_list;
220 struct list_head interface_list;
223 int netcp_register_module(struct netcp_module *module);
224 void netcp_unregister_module(struct netcp_module *module);
225 void *netcp_module_get_intf_data(struct netcp_module *module,
226 struct netcp_intf *intf);
228 int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
229 struct netcp_device *netcp_device,
230 const char *dma_chan_name, unsigned int dma_queue_id);
231 int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
232 int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
234 typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
235 int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
236 netcp_hook_rtn *hook_rtn, void *hook_data);
237 int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
238 netcp_hook_rtn *hook_rtn, void *hook_data);
239 int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
240 netcp_hook_rtn *hook_rtn, void *hook_data);
241 int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
242 netcp_hook_rtn *hook_rtn, void *hook_data);
243 void *netcp_device_find_module(struct netcp_device *netcp_device,
246 /* SGMII functions */
247 int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
248 bool netcp_sgmii_rtreset(void __iomem *sgmii_ofs, int port, bool set);
249 int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
250 int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
252 /* XGBE SERDES init functions */
253 int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
255 #endif /* __NETCP_H__ */