257 lines
7.1 KiB
C
257 lines
7.1 KiB
C
/*
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* NetCP driver local header
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*
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* Copyright (C) 2014 Texas Instruments Incorporated
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* Authors: Sandeep Nair <sandeep_n@ti.com>
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* Sandeep Paulraj <s-paulraj@ti.com>
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* Cyril Chemparathy <cyril@ti.com>
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* Santosh Shilimkar <santosh.shilimkar@ti.com>
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* Wingman Kwok <w-kwok2@ti.com>
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* Murali Karicheri <m-karicheri2@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __NETCP_H__
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#define __NETCP_H__
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#include <linux/netdevice.h>
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#include <linux/soc/ti/knav_dma.h>
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#include <linux/u64_stats_sync.h>
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/* Maximum Ethernet frame size supported by Keystone switch */
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#define NETCP_MAX_FRAME_SIZE 9504
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#define SGMII_LINK_MAC_MAC_AUTONEG 0
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#define SGMII_LINK_MAC_PHY 1
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#define SGMII_LINK_MAC_MAC_FORCED 2
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#define SGMII_LINK_MAC_FIBER 3
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#define SGMII_LINK_MAC_PHY_NO_MDIO 4
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#define RGMII_LINK_MAC_PHY 5
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#define RGMII_LINK_MAC_PHY_NO_MDIO 7
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#define XGMII_LINK_MAC_PHY 10
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#define XGMII_LINK_MAC_MAC_FORCED 11
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struct netcp_device;
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struct netcp_tx_pipe {
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struct netcp_device *netcp_device;
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void *dma_queue;
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unsigned int dma_queue_id;
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/* To port for packet forwarded to switch. Used only by ethss */
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u8 switch_to_port;
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#define SWITCH_TO_PORT_IN_TAGINFO BIT(0)
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u8 flags;
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void *dma_channel;
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const char *dma_chan_name;
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};
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#define ADDR_NEW BIT(0)
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#define ADDR_VALID BIT(1)
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enum netcp_addr_type {
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ADDR_ANY,
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ADDR_DEV,
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ADDR_UCAST,
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ADDR_MCAST,
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ADDR_BCAST
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};
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struct netcp_addr {
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struct netcp_intf *netcp;
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unsigned char addr[ETH_ALEN];
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enum netcp_addr_type type;
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unsigned int flags;
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struct list_head node;
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};
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struct netcp_stats {
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struct u64_stats_sync syncp_rx ____cacheline_aligned_in_smp;
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u64 rx_packets;
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u64 rx_bytes;
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u32 rx_errors;
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u32 rx_dropped;
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struct u64_stats_sync syncp_tx ____cacheline_aligned_in_smp;
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u64 tx_packets;
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u64 tx_bytes;
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u32 tx_errors;
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u32 tx_dropped;
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};
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struct netcp_intf {
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struct device *dev;
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struct device *ndev_dev;
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struct net_device *ndev;
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bool big_endian;
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unsigned int tx_compl_qid;
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void *tx_pool;
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struct list_head txhook_list_head;
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unsigned int tx_pause_threshold;
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void *tx_compl_q;
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unsigned int tx_resume_threshold;
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void *rx_queue;
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void *rx_pool;
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struct list_head rxhook_list_head;
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unsigned int rx_queue_id;
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void *rx_fdq[KNAV_DMA_FDQ_PER_CHAN];
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struct napi_struct rx_napi;
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struct napi_struct tx_napi;
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#define ETH_SW_CAN_REMOVE_ETH_FCS BIT(0)
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u32 hw_cap;
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/* 64-bit netcp stats */
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struct netcp_stats stats;
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void *rx_channel;
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const char *dma_chan_name;
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u32 rx_pool_size;
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u32 rx_pool_region_id;
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u32 tx_pool_size;
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u32 tx_pool_region_id;
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struct list_head module_head;
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struct list_head interface_list;
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struct list_head addr_list;
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bool netdev_registered;
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bool primary_module_attached;
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/* Lock used for protecting Rx/Tx hook list management */
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spinlock_t lock;
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struct netcp_device *netcp_device;
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struct device_node *node_interface;
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/* DMA configuration data */
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u32 msg_enable;
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u32 rx_queue_depths[KNAV_DMA_FDQ_PER_CHAN];
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};
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#define NETCP_PSDATA_LEN KNAV_DMA_NUM_PS_WORDS
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struct netcp_packet {
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struct sk_buff *skb;
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__le32 *epib;
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u32 *psdata;
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u32 eflags;
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unsigned int psdata_len;
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struct netcp_intf *netcp;
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struct netcp_tx_pipe *tx_pipe;
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bool rxtstamp_complete;
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void *ts_context;
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void (*txtstamp)(void *ctx, struct sk_buff *skb);
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};
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static inline u32 *netcp_push_psdata(struct netcp_packet *p_info,
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unsigned int bytes)
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{
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u32 *buf;
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unsigned int words;
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if ((bytes & 0x03) != 0)
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return NULL;
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words = bytes >> 2;
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if ((p_info->psdata_len + words) > NETCP_PSDATA_LEN)
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return NULL;
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p_info->psdata_len += words;
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buf = &p_info->psdata[NETCP_PSDATA_LEN - p_info->psdata_len];
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return buf;
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}
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static inline int netcp_align_psdata(struct netcp_packet *p_info,
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unsigned int byte_align)
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{
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int padding;
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switch (byte_align) {
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case 0:
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padding = -EINVAL;
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break;
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case 1:
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case 2:
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case 4:
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padding = 0;
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break;
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case 8:
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padding = (p_info->psdata_len << 2) % 8;
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break;
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case 16:
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padding = (p_info->psdata_len << 2) % 16;
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break;
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default:
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padding = (p_info->psdata_len << 2) % byte_align;
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break;
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}
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return padding;
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}
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struct netcp_module {
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const char *name;
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struct module *owner;
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bool primary;
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/* probe/remove: called once per NETCP instance */
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int (*probe)(struct netcp_device *netcp_device,
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struct device *device, struct device_node *node,
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void **inst_priv);
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int (*remove)(struct netcp_device *netcp_device, void *inst_priv);
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/* attach/release: called once per network interface */
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int (*attach)(void *inst_priv, struct net_device *ndev,
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struct device_node *node, void **intf_priv);
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int (*release)(void *intf_priv);
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int (*open)(void *intf_priv, struct net_device *ndev);
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int (*close)(void *intf_priv, struct net_device *ndev);
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int (*add_addr)(void *intf_priv, struct netcp_addr *naddr);
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int (*del_addr)(void *intf_priv, struct netcp_addr *naddr);
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int (*add_vid)(void *intf_priv, int vid);
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int (*del_vid)(void *intf_priv, int vid);
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int (*ioctl)(void *intf_priv, struct ifreq *req, int cmd);
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int (*set_rx_mode)(void *intf_priv, bool promisc);
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/* used internally */
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struct list_head module_list;
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struct list_head interface_list;
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};
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int netcp_register_module(struct netcp_module *module);
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void netcp_unregister_module(struct netcp_module *module);
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void *netcp_module_get_intf_data(struct netcp_module *module,
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struct netcp_intf *intf);
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int netcp_txpipe_init(struct netcp_tx_pipe *tx_pipe,
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struct netcp_device *netcp_device,
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const char *dma_chan_name, unsigned int dma_queue_id);
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int netcp_txpipe_open(struct netcp_tx_pipe *tx_pipe);
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int netcp_txpipe_close(struct netcp_tx_pipe *tx_pipe);
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typedef int netcp_hook_rtn(int order, void *data, struct netcp_packet *packet);
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int netcp_register_txhook(struct netcp_intf *netcp_priv, int order,
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netcp_hook_rtn *hook_rtn, void *hook_data);
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int netcp_unregister_txhook(struct netcp_intf *netcp_priv, int order,
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netcp_hook_rtn *hook_rtn, void *hook_data);
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int netcp_register_rxhook(struct netcp_intf *netcp_priv, int order,
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netcp_hook_rtn *hook_rtn, void *hook_data);
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int netcp_unregister_rxhook(struct netcp_intf *netcp_priv, int order,
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netcp_hook_rtn *hook_rtn, void *hook_data);
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void *netcp_device_find_module(struct netcp_device *netcp_device,
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const char *name);
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/* SGMII functions */
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int netcp_sgmii_reset(void __iomem *sgmii_ofs, int port);
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bool netcp_sgmii_rtreset(void __iomem *sgmii_ofs, int port, bool set);
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int netcp_sgmii_get_port_link(void __iomem *sgmii_ofs, int port);
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int netcp_sgmii_config(void __iomem *sgmii_ofs, int port, u32 interface);
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/* XGBE SERDES init functions */
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int netcp_xgbe_serdes_init(void __iomem *serdes_regs, void __iomem *xgbe_regs);
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#endif /* __NETCP_H__ */
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