am65-cpsw-nuss.h

  1/* SPDX-License-Identifier: GPL-2.0 */
  2/* Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
  3 *
  4 */
  5
  6#ifndef AM65_CPSW_NUSS_H_
  7#define AM65_CPSW_NUSS_H_
  8
  9#include <linux/if_ether.h>
 10#include <linux/kernel.h>
 11#include <linux/module.h>
 12#include <linux/netdevice.h>
 13#include <linux/phylink.h>
 14#include <linux/platform_device.h>
 15#include <linux/soc/ti/k3-ringacc.h>
 16#include <net/devlink.h>
 17#include <net/xdp.h>
 18#include "am65-cpsw-qos.h"
 19
 20struct am65_cpts;
 21
 22#define HOST_PORT_NUM		0
 23
 24#define AM65_CPSW_MAX_QUEUES	8	/* both TX & RX */
 25
 26#define AM65_CPSW_PORT_VLAN_REG_OFFSET	0x014
 27
 28struct am65_cpsw_slave_data {
 29	bool				mac_only;
 30	struct cpsw_sl			*mac_sl;
 31	struct device_node		*port_np;
 32	phy_interface_t			phy_if;
 33	struct phy			*ifphy;
 34	struct phy			*serdes_phy;
 35	bool				rx_pause;
 36	bool				tx_pause;
 37	u8				mac_addr[ETH_ALEN];
 38	int				port_vlan;
 39	struct phylink			*phylink;
 40	struct phylink_config		phylink_config;
 41};
 42
 43struct am65_cpsw_port {
 44	struct am65_cpsw_common		*common;
 45	struct net_device		*ndev;
 46	const char			*name;
 47	u32				port_id;
 48	void __iomem			*port_base;
 49	void __iomem			*sgmii_base;
 50	void __iomem			*stat_base;
 51	void __iomem			*fetch_ram_base;
 52	bool				disabled;
 53	struct am65_cpsw_slave_data	slave;
 54	bool				tx_ts_enabled;
 55	enum hwtstamp_rx_filters	rx_ts_filter;
 56	struct am65_cpsw_qos		qos;
 57	struct devlink_port		devlink_port;
 58	struct bpf_prog			*xdp_prog;
 59	struct xdp_rxq_info		xdp_rxq[AM65_CPSW_MAX_QUEUES];
 60	/* Only for suspend resume context */
 61	u32				vid_context;
 62};
 63
 64enum am65_cpsw_tx_buf_type {
 65	AM65_CPSW_TX_BUF_TYPE_SKB,
 66	AM65_CPSW_TX_BUF_TYPE_XDP_TX,
 67	AM65_CPSW_TX_BUF_TYPE_XDP_NDO,
 68};
 69
 70struct am65_cpsw_host {
 71	struct am65_cpsw_common		*common;
 72	void __iomem			*port_base;
 73	void __iomem			*stat_base;
 74	/* Only for suspend resume context */
 75	u32				vid_context;
 76};
 77
 78struct am65_cpsw_tx_chn {
 79	struct device *dma_dev;
 80	struct napi_struct napi_tx;
 81	struct am65_cpsw_common	*common;
 82	struct k3_cppi_desc_pool *desc_pool;
 83	struct k3_udma_glue_tx_channel *tx_chn;
 84	spinlock_t lock; /* protect TX rings in multi-port mode */
 85	struct hrtimer tx_hrtimer;
 86	unsigned long tx_pace_timeout;
 87	int irq;
 88	u32 id;
 89	u32 descs_num;
 90	unsigned char dsize_log2;
 91	char tx_chn_name[128];
 92	u32 rate_mbps;
 93};
 94
 95struct am65_cpsw_rx_flow {
 96	u32 id;
 97	struct napi_struct napi_rx;
 98	struct am65_cpsw_common	*common;
 99	int irq;
100	bool irq_disabled;
101	struct hrtimer rx_hrtimer;
102	unsigned long rx_pace_timeout;
103	struct page_pool *page_pool;
104	char name[32];
105};
106
107struct am65_cpsw_tx_swdata {
108	struct net_device *ndev;
109	union {
110		struct sk_buff *skb;
111		struct xdp_frame *xdpf;
112	};
113};
114
115struct am65_cpsw_swdata {
116	u32 flow_id;
117	struct page *page;
118};
119
120struct am65_cpsw_rx_chn {
121	struct device *dev;
122	struct device *dma_dev;
123	struct k3_cppi_desc_pool *desc_pool;
124	struct k3_udma_glue_rx_channel *rx_chn;
125	u32 descs_num;
126	unsigned char dsize_log2;
127	struct am65_cpsw_rx_flow flows[AM65_CPSW_MAX_QUEUES];
128};
129
130#define AM65_CPSW_QUIRK_I2027_NO_TX_CSUM BIT(0)
131#define AM64_CPSW_QUIRK_DMA_RX_TDOWN_IRQ BIT(1)
132
133struct am65_cpsw_pdata {
134	u32	quirks;
135	u64	extra_modes;
136	enum k3_ring_mode fdqring_mode;
137	const char	*ale_dev_id;
138};
139
140enum cpsw_devlink_param_id {
141	AM65_CPSW_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
142	AM65_CPSW_DL_PARAM_SWITCH_MODE,
143};
144
145struct am65_cpsw_devlink {
146	struct am65_cpsw_common *common;
147};
148
149struct am65_cpsw_common {
150	struct device		*dev;
151	struct device		*mdio_dev;
152	struct am65_cpsw_pdata	pdata;
153
154	void __iomem		*ss_base;
155	void __iomem		*cpsw_base;
156
157	u32			port_num;
158	struct am65_cpsw_host   host;
159	struct am65_cpsw_port	*ports;
160	u32			disabled_ports_mask;
161	struct net_device	*dma_ndev;
162
163	int			usage_count; /* number of opened ports */
164	struct cpsw_ale		*ale;
165	int			tx_ch_num;
166	u32			tx_ch_rate_msk;
167	u32			rx_flow_id_base;
168
169	struct am65_cpsw_tx_chn	tx_chns[AM65_CPSW_MAX_QUEUES];
170	struct completion	tdown_complete;
171	atomic_t		tdown_cnt;
172
173	int			rx_ch_num_flows;
174	struct am65_cpsw_rx_chn	rx_chns;
175
176	u32			nuss_ver;
177	u32			cpsw_ver;
178	unsigned long		bus_freq;
179	bool			pf_p0_rx_ptype_rrobin;
180	struct am65_cpts	*cpts;
181	int			est_enabled;
182	bool			iet_enabled;
183
184	bool		is_emac_mode;
185	u16			br_members;
186	int			default_vlan;
187	struct devlink *devlink;
188	struct net_device *hw_bridge_dev;
189	struct notifier_block am65_cpsw_netdevice_nb;
190	unsigned char switch_id[MAX_PHYS_ITEM_ID_LEN];
191	/* only for suspend/resume context restore */
192	u32			*ale_context;
193};
194
195struct am65_cpsw_ndev_priv {
196	u32			msg_enable;
197	struct am65_cpsw_port	*port;
198	bool offload_fwd_mark;
199	/* Serialize access to MAC Merge state between ethtool requests
200	 * and link state updates
201	 */
202	struct mutex		mm_lock;
203};
204
205#define am65_ndev_to_priv(ndev) \
206	((struct am65_cpsw_ndev_priv *)netdev_priv(ndev))
207#define am65_ndev_to_port(ndev) (am65_ndev_to_priv(ndev)->port)
208#define am65_ndev_to_common(ndev) (am65_ndev_to_port(ndev)->common)
209#define am65_ndev_to_slave(ndev) (&am65_ndev_to_port(ndev)->slave)
210
211#define am65_common_get_host(common) (&(common)->host)
212#define am65_common_get_port(common, id) (&(common)->ports[(id) - 1])
213
214#define am65_cpsw_napi_to_rx_flow(pnapi) \
215	container_of(pnapi, struct am65_cpsw_rx_flow, napi_rx)
216#define am65_cpsw_napi_to_tx_chn(pnapi) \
217	container_of(pnapi, struct am65_cpsw_tx_chn, napi_tx)
218
219#define AM65_CPSW_DRV_NAME "am65-cpsw-nuss"
220
221#define AM65_CPSW_IS_CPSW2G(common) ((common)->port_num == 1)
222
223extern const struct ethtool_ops am65_cpsw_ethtool_ops_slave;
224
225void am65_cpsw_nuss_set_p0_ptype(struct am65_cpsw_common *common);
226int am65_cpsw_nuss_update_tx_rx_chns(struct am65_cpsw_common *common,
227				     int num_tx, int num_rx);
228
229bool am65_cpsw_port_dev_check(const struct net_device *dev);
230
231#endif /* AM65_CPSW_NUSS_H_ */