2 * NetCP driver local header
4 * Copyright (C) 2014 Texas Instruments Incorporated
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 XGMII_LINK_MAC_PHY 10
37 #define XGMII_LINK_MAC_MAC_FORCED 11
41 struct netcp_tx_pipe {
42 struct netcp_device *netcp_device;
44 unsigned int dma_queue_id;
45 /* To port for packet forwarded to switch. Used only by ethss */
47 #define SWITCH_TO_PORT_IN_TAGINFO BIT(0)
50 const char *dma_chan_name;
53 #define ADDR_NEW BIT(0)
54 #define ADDR_VALID BIT(1)
56 enum netcp_addr_type {
65 struct netcp_intf *netcp;
66 unsigned char addr[ETH_ALEN];
67 enum netcp_addr_type type;
69 struct list_head node;
73 struct u64_stats_sync syncp_rx ____cacheline_aligned_in_smp;
79 struct u64_stats_sync syncp_tx ____cacheline_aligned_in_smp;
88 struct device *ndev_dev;
89 struct net_device *ndev;
91 unsigned int tx_compl_qid;
93 struct list_head txhook_list_head;
94 unsigned int tx_pause_threshold;
97 unsigned int tx_resume_threshold;
100 struct list_head rxhook_list_head;
101 unsigned int rx_queue_id;
102 void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
103 struct napi_struct rx_napi;
104 struct napi_struct tx_napi;
105 #define ETH_SW_CAN_REMOVE_ETH_FCS BIT(0)
108 /* 64-bit netcp stats */
109 struct netcp_stats stats;
112 const char *dma_chan_name;
114 u32 rx_pool_region_id;
116 u32 tx_pool_region_id;
117 struct list_head module_head;
118 struct list_head interface_list;
119 struct list_head addr_list;
120 bool netdev_registered;
121 bool primary_module_attached;
123 /* Lock used for protecting Rx/Tx hook list management */
125 struct netcp_device *netcp_device;
126 struct device_node *node_interface;
128 /* DMA configuration data */
130 u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
133 #define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
134 struct netcp_packet {
139 unsigned int psdata_len;
140 struct netcp_intf *netcp;
141 struct netcp_tx_pipe *tx_pipe;
142 bool rxtstamp_complete;
145 void (*txtstamp)(void *ctx, struct sk_buff *skb);
148 static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
154 if ((bytes & 0x03) != 0)
158 if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
161 p_info->psdata_len += words;
162 buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
166 static inline int netcp_align_psdata(struct netcp_packet *p_info,
167 unsigned int byte_align)
171 switch (byte_align) {
181 padding = (p_info->psdata_len << 2) % 8;
184 padding = (p_info->psdata_len << 2) % 16;
187 padding = (p_info->psdata_len << 2) % byte_align;
193 struct netcp_module {
195 struct module *owner;
198 /* probe/remove: called once per NETCP instance */
199 int (*probe)(struct netcp_device *netcp_device,
200 struct device *device, struct device_node *node,
202 int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
204 /* attach/release: called once per network interface */
205 int (*attach)(void *inst_priv, struct net_device *ndev,
206 struct device_node *node, void **intf_priv);
207 int (*release)(void *intf_priv);
208 int (*open)(void *intf_priv, struct net_device *ndev);
209 int (*close)(void *intf_priv, struct net_device *ndev);
210 int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
211 int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
212 int (*add_vid)(void *intf_priv, int vid);
213 int (*del_vid)(void *intf_priv, int vid);
214 int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
216 /* used internally */
217 struct list_head module_list;
218 struct list_head interface_list;
221 int netcp_register_module(struct netcp_module *module);
222 void netcp_unregister_module(struct netcp_module *module);
223 void *netcp_module_get_intf_data(struct netcp_module *module,
224 struct netcp_intf *intf);
226 int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
227 struct netcp_device *netcp_device,
228 const char *dma_chan_name, unsigned int dma_queue_id);
229 int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
230 int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
232 typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
233 int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
234 netcp_hook_rtn *hook_rtn, void *hook_data);
235 int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
236 netcp_hook_rtn *hook_rtn, void *hook_data);
237 int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
238 netcp_hook_rtn *hook_rtn, void *hook_data);
239 int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
240 netcp_hook_rtn *hook_rtn, void *hook_data);
241 void *netcp_device_find_module(struct netcp_device *netcp_device,
244 /* SGMII functions */
245 int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
246 bool netcp_sgmii_rtreset(void __iomem *sgmii_ofs, int port, bool set);
247 int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
248 int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
250 /* XGBE SERDES init functions */
251 int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
253 #endif /* __NETCP_H__ */