--- /dev/null
+/*
+ * NetCP driver local header
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated
+ * Authors: Sandeep Nair <sandeep_n@ti.com>
+ * Sandeep Paulraj <s-paulraj@ti.com>
+ * Cyril Chemparathy <cyril@ti.com>
+ * Santosh Shilimkar <santosh.shilimkar@ti.com>
+ * Wingman Kwok <w-kwok2@ti.com>
+ * Murali Karicheri <m-karicheri2@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef __NETCP_H__
+#define __NETCP_H__
+
+#include <linux/netdevice.h>
+#include <linux/soc/ti/knav_dma.h>
+
+/* Maximum Ethernet frame size supported by Keystone switch */
+#define NETCP_MAX_FRAME_SIZE 9504
+
+#define SGMII_LINK_MAC_MAC_AUTONEG 0
+#define SGMII_LINK_MAC_PHY 1
+#define SGMII_LINK_MAC_MAC_FORCED 2
+#define SGMII_LINK_MAC_FIBER 3
+#define SGMII_LINK_MAC_PHY_NO_MDIO 4
+#define XGMII_LINK_MAC_PHY 10
+#define XGMII_LINK_MAC_MAC_FORCED 11
+
+struct netcp_device;
+
+struct netcp_tx_pipe {
+ struct netcp_device *netcp_device;
+ void *dma_queue;
+ unsigned int dma_queue_id;
+ /* To port for packet forwarded to switch. Used only by ethss */
+ u8 switch_to_port;
+#define SWITCH_TO_PORT_IN_TAGINFO BIT(0)
+ u8 flags;
+ void *dma_channel;
+ const char *dma_chan_name;
+};
+
+#define ADDR_NEW BIT(0)
+#define ADDR_VALID BIT(1)
+
+enum netcp_addr_type {
+ ADDR_ANY,
+ ADDR_DEV,
+ ADDR_UCAST,
+ ADDR_MCAST,
+ ADDR_BCAST
+};
+
+struct netcp_addr {
+ struct netcp_intf *netcp;
+ unsigned char addr[ETH_ALEN];
+ enum netcp_addr_type type;
+ unsigned int flags;
+ struct list_head node;
+};
+
+struct netcp_intf {
+ struct device *dev;
+ struct device *ndev_dev;
+ struct net_device *ndev;
+ bool big_endian;
+ unsigned int tx_compl_qid;
+ void *tx_pool;
+ struct list_head txhook_list_head;
+ unsigned int tx_pause_threshold;
+ void *tx_compl_q;
+
+ unsigned int tx_resume_threshold;
+ void *rx_queue;
+ void *rx_pool;
+ struct list_head rxhook_list_head;
+ unsigned int rx_queue_id;
+ void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
+ u32 rx_buffer_sizes[KNAV_DMA_FDQ_PER_CHAN];
+ struct napi_struct rx_napi;
+ struct napi_struct tx_napi;
+
+ void *rx_channel;
+ const char *dma_chan_name;
+ u32 rx_pool_size;
+ u32 rx_pool_region_id;
+ u32 tx_pool_size;
+ u32 tx_pool_region_id;
+ struct list_head module_head;
+ struct list_head interface_list;
+ struct list_head addr_list;
+ bool netdev_registered;
+ bool primary_module_attached;
+
+ /* Lock used for protecting Rx/Tx hook list management */
+ spinlock_t lock;
+ struct netcp_device *netcp_device;
+ struct device_node *node_interface;
+
+ /* DMA configuration data */
+ u32 msg_enable;
+ u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
+};
+
+#define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
+struct netcp_packet {
+ struct sk_buff *skb;
+ u32 *epib;
+ u32 *psdata;
+ unsigned int psdata_len;
+ struct netcp_intf *netcp;
+ struct netcp_tx_pipe *tx_pipe;
+ bool rxtstamp_complete;
+ void *ts_context;
+
+ int (*txtstamp_complete)(void *ctx, struct netcp_packet *pkt);
+};
+
+static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
+ unsigned int bytes)
+{
+ u32 *buf;
+ unsigned int words;
+
+ if ((bytes & 0x03) != 0)
+ return NULL;
+ words = bytes >> 2;
+
+ if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
+ return NULL;
+
+ p_info->psdata_len += words;
+ buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
+ return buf;
+}
+
+static inline int netcp_align_psdata(struct netcp_packet *p_info,
+ unsigned int byte_align)
+{
+ int padding;
+
+ switch (byte_align) {
+ case 0:
+ padding = -EINVAL;
+ break;
+ case 1:
+ case 2:
+ case 4:
+ padding = 0;
+ break;
+ case 8:
+ padding = (p_info->psdata_len << 2) % 8;
+ break;
+ case 16:
+ padding = (p_info->psdata_len << 2) % 16;
+ break;
+ default:
+ padding = (p_info->psdata_len << 2) % byte_align;
+ break;
+ }
+ return padding;
+}
+
+struct netcp_module {
+ const char *name;
+ struct module *owner;
+ bool primary;
+
+ /* probe/remove: called once per NETCP instance */
+ int (*probe)(struct netcp_device *netcp_device,
+ struct device *device, struct device_node *node,
+ void **inst_priv);
+ int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
+
+ /* attach/release: called once per network interface */
+ int (*attach)(void *inst_priv, struct net_device *ndev,
+ struct device_node *node, void **intf_priv);
+ int (*release)(void *intf_priv);
+ int (*open)(void *intf_priv, struct net_device *ndev);
+ int (*close)(void *intf_priv, struct net_device *ndev);
+ int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
+ int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
+ int (*add_vid)(void *intf_priv, int vid);
+ int (*del_vid)(void *intf_priv, int vid);
+ int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
+
+ /* used internally */
+ struct list_head module_list;
+ struct list_head interface_list;
+};
+
+int netcp_register_module(struct netcp_module *module);
+void netcp_unregister_module(struct netcp_module *module);
+void *netcp_module_get_intf_data(struct netcp_module *module,
+ struct netcp_intf *intf);
+
+int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
+ struct netcp_device *netcp_device,
+ const char *dma_chan_name, unsigned int dma_queue_id);
+int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
+int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
+
+typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
+int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
+ netcp_hook_rtn *hook_rtn, void *hook_data);
+void *netcp_device_find_module(struct netcp_device *netcp_device,
+ const char *name);
+
+/* SGMII functions */
+int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
+int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
+int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
+
+/* XGBE SERDES init functions */
+int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
+
+#endif /* __NETCP_H__ */
Code Review / kvmfornfv.git / blobdiff