1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*******************************************************************************
3 Copyright (C) 2007-2009 STMicroelectronics Ltd
4
5
6 Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
7 *******************************************************************************/
8
9 #ifndef __STMMAC_H__
10 #define __STMMAC_H__
11
12 #define STMMAC_RESOURCE_NAME "stmmaceth"
13
14 #include <linux/clk.h>
15 #include <linux/hrtimer.h>
16 #include <linux/if_vlan.h>
17 #include <linux/stmmac.h>
18 #include <linux/phylink.h>
19 #include <linux/pci.h>
20 #include "common.h"
21 #include <linux/ptp_clock_kernel.h>
22 #include <linux/net_tstamp.h>
23 #include <linux/reset.h>
24 #include <net/page_pool.h>
25 #include <uapi/linux/bpf.h>
26
27 struct stmmac_resources {
28 void __iomem *addr;
29 u8 mac[ETH_ALEN];
30 int wol_irq;
31 int lpi_irq;
32 int irq;
33 int sfty_ce_irq;
34 int sfty_ue_irq;
35 int rx_irq[MTL_MAX_RX_QUEUES];
36 int tx_irq[MTL_MAX_TX_QUEUES];
37 };
38
39 enum stmmac_txbuf_type {
40 STMMAC_TXBUF_T_SKB,
41 STMMAC_TXBUF_T_XDP_TX,
42 STMMAC_TXBUF_T_XDP_NDO,
43 STMMAC_TXBUF_T_XSK_TX,
44 };
45
46 struct stmmac_tx_info {
47 dma_addr_t buf;
48 bool map_as_page;
49 unsigned len;
50 bool last_segment;
51 bool is_jumbo;
52 enum stmmac_txbuf_type buf_type;
53 };
54
55 #define STMMAC_TBS_AVAIL BIT(0)
56 #define STMMAC_TBS_EN BIT(1)
57
58 /* Frequently used values are kept adjacent for cache effect */
59 struct stmmac_tx_queue {
60 u32 tx_count_frames;
61 int tbs;
62 struct hrtimer txtimer;
63 u32 queue_index;
64 struct stmmac_priv *priv_data;
65 struct dma_extended_desc *dma_etx ____cacheline_aligned_in_smp;
66 struct dma_edesc *dma_entx;
67 struct dma_desc *dma_tx;
68 union {
69 struct sk_buff **tx_skbuff;
70 struct xdp_frame **xdpf;
71 };
72 struct stmmac_tx_info *tx_skbuff_dma;
73 struct xsk_buff_pool *xsk_pool;
74 u32 xsk_frames_done;
75 unsigned int cur_tx;
76 unsigned int dirty_tx;
77 dma_addr_t dma_tx_phy;
78 dma_addr_t tx_tail_addr;
79 u32 mss;
80 };
81
82 struct stmmac_rx_buffer {
83 union {
84 struct {
85 struct page *page;
86 dma_addr_t addr;
87 __u32 page_offset;
88 };
89 struct xdp_buff *xdp;
90 };
91 struct page *sec_page;
92 dma_addr_t sec_addr;
93 };
94
95 struct stmmac_rx_queue {
96 u32 rx_count_frames;
97 u32 queue_index;
98 struct xdp_rxq_info xdp_rxq;
99 struct xsk_buff_pool *xsk_pool;
100 struct page_pool *page_pool;
101 struct stmmac_rx_buffer *buf_pool;
102 struct stmmac_priv *priv_data;
103 struct dma_extended_desc *dma_erx;
104 struct dma_desc *dma_rx ____cacheline_aligned_in_smp;
105 unsigned int cur_rx;
106 unsigned int dirty_rx;
107 unsigned int buf_alloc_num;
108 u32 rx_zeroc_thresh;
109 dma_addr_t dma_rx_phy;
110 u32 rx_tail_addr;
111 unsigned int state_saved;
112 struct {
113 struct sk_buff *skb;
114 unsigned int len;
115 unsigned int error;
116 } state;
117 };
118
119 struct stmmac_channel {
120 struct napi_struct rx_napi ____cacheline_aligned_in_smp;
121 struct napi_struct tx_napi ____cacheline_aligned_in_smp;
122 struct napi_struct rxtx_napi ____cacheline_aligned_in_smp;
123 struct stmmac_priv *priv_data;
124 spinlock_t lock;
125 u32 index;
126 };
127
128 struct stmmac_tc_entry {
129 bool in_use;
130 bool in_hw;
131 bool is_last;
132 bool is_frag;
133 void *frag_ptr;
134 unsigned int table_pos;
135 u32 handle;
136 u32 prio;
137 struct {
138 u32 match_data;
139 u32 match_en;
140 u8 af:1;
141 u8 rf:1;
142 u8 im:1;
143 u8 nc:1;
144 u8 res1:4;
145 u8 frame_offset;
146 u8 ok_index;
147 u8 dma_ch_no;
148 u32 res2;
149 } __packed val;
150 };
151
152 #define STMMAC_PPS_MAX 4
153 struct stmmac_pps_cfg {
154 bool available;
155 struct timespec64 start;
156 struct timespec64 period;
157 };
158
159 struct stmmac_rss {
160 int enable;
161 u8 key[STMMAC_RSS_HASH_KEY_SIZE];
162 u32 table[STMMAC_RSS_MAX_TABLE_SIZE];
163 };
164
165 #define STMMAC_FLOW_ACTION_DROP BIT(0)
166 struct stmmac_flow_entry {
167 unsigned long cookie;
168 unsigned long action;
169 u8 ip_proto;
170 int in_use;
171 int idx;
172 int is_l4;
173 };
174
175 /* Rx Frame Steering */
176 enum stmmac_rfs_type {
177 STMMAC_RFS_T_VLAN,
178 STMMAC_RFS_T_LLDP,
179 STMMAC_RFS_T_1588,
180 STMMAC_RFS_T_MAX,
181 };
182
183 struct stmmac_rfs_entry {
184 unsigned long cookie;
185 u16 etype;
186 int in_use;
187 int type;
188 int tc;
189 };
190
191 struct stmmac_dma_conf {
192 unsigned int dma_buf_sz;
193
194 /* RX Queue */
195 struct stmmac_rx_queue rx_queue[MTL_MAX_RX_QUEUES];
196 unsigned int dma_rx_size;
197
198 /* TX Queue */
199 struct stmmac_tx_queue tx_queue[MTL_MAX_TX_QUEUES];
200 unsigned int dma_tx_size;
201 };
202
203 struct stmmac_priv {
204 /* Frequently used values are kept adjacent for cache effect */
205 u32 tx_coal_frames[MTL_MAX_TX_QUEUES];
206 u32 tx_coal_timer[MTL_MAX_TX_QUEUES];
207 u32 rx_coal_frames[MTL_MAX_TX_QUEUES];
208
209 int hwts_tx_en;
210 bool tx_path_in_lpi_mode;
211 bool tso;
212 int sph;
213 int sph_cap;
214 u32 sarc_type;
215
216 unsigned int rx_copybreak;
217 u32 rx_riwt[MTL_MAX_TX_QUEUES];
218 int hwts_rx_en;
219
220 void __iomem *ioaddr;
221 struct net_device *dev;
222 struct device *device;
223 struct mac_device_info *hw;
224 int (*hwif_quirks)(struct stmmac_priv *priv);
225 struct mutex lock;
226
227 struct stmmac_dma_conf dma_conf;
228
229 /* Generic channel for NAPI */
230 struct stmmac_channel channel[STMMAC_CH_MAX];
231
232 int speed;
233 unsigned int flow_ctrl;
234 unsigned int pause;
235 struct mii_bus *mii;
236
237 struct phylink_config phylink_config;
238 struct phylink *phylink;
239
240 struct stmmac_extra_stats xstats ____cacheline_aligned_in_smp;
241 struct stmmac_safety_stats sstats;
242 struct plat_stmmacenet_data *plat;
243 struct dma_features dma_cap;
244 struct stmmac_counters mmc;
245 int hw_cap_support;
246 int synopsys_id;
247 u32 msg_enable;
248 int wolopts;
249 int wol_irq;
250 int clk_csr;
251 struct timer_list eee_ctrl_timer;
252 int lpi_irq;
253 int eee_enabled;
254 int eee_active;
255 int tx_lpi_timer;
256 int tx_lpi_enabled;
257 int eee_tw_timer;
258 bool eee_sw_timer_en;
259 unsigned int mode;
260 unsigned int chain_mode;
261 int extend_desc;
262 struct hwtstamp_config tstamp_config;
263 struct ptp_clock *ptp_clock;
264 struct ptp_clock_info ptp_clock_ops;
265 unsigned int default_addend;
266 u32 sub_second_inc;
267 u32 systime_flags;
268 u32 adv_ts;
269 int use_riwt;
270 int irq_wake;
271 rwlock_t ptp_lock;
272 /* Protects auxiliary snapshot registers from concurrent access. */
273 struct mutex aux_ts_lock;
274 wait_queue_head_t tstamp_busy_wait;
275
276 void __iomem *mmcaddr;
277 void __iomem *ptpaddr;
278 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
279 int sfty_ce_irq;
280 int sfty_ue_irq;
281 int rx_irq[MTL_MAX_RX_QUEUES];
282 int tx_irq[MTL_MAX_TX_QUEUES];
283 /*irq name */
284 char int_name_mac[IFNAMSIZ + 9];
285 char int_name_wol[IFNAMSIZ + 9];
286 char int_name_lpi[IFNAMSIZ + 9];
287 char int_name_sfty_ce[IFNAMSIZ + 10];
288 char int_name_sfty_ue[IFNAMSIZ + 10];
289 char int_name_rx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 14];
290 char int_name_tx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 18];
291
292 #ifdef CONFIG_DEBUG_FS
293 struct dentry *dbgfs_dir;
294 #endif
295
296 unsigned long state;
297 struct workqueue_struct *wq;
298 struct work_struct service_task;
299
300 /* Workqueue for handling FPE hand-shaking */
301 unsigned long fpe_task_state;
302 struct workqueue_struct *fpe_wq;
303 struct work_struct fpe_task;
304 char wq_name[IFNAMSIZ + 4];
305
306 /* TC Handling */
307 unsigned int tc_entries_max;
308 unsigned int tc_off_max;
309 struct stmmac_tc_entry *tc_entries;
310 unsigned int flow_entries_max;
311 struct stmmac_flow_entry *flow_entries;
312 unsigned int rfs_entries_max[STMMAC_RFS_T_MAX];
313 unsigned int rfs_entries_cnt[STMMAC_RFS_T_MAX];
314 unsigned int rfs_entries_total;
315 struct stmmac_rfs_entry *rfs_entries;
316
317 /* Pulse Per Second output */
318 struct stmmac_pps_cfg pps[STMMAC_PPS_MAX];
319
320 /* Receive Side Scaling */
321 struct stmmac_rss rss;
322
323 /* XDP BPF Program */
324 unsigned long *af_xdp_zc_qps;
325 struct bpf_prog *xdp_prog;
326 };
327
328 enum stmmac_state {
329 STMMAC_DOWN,
330 STMMAC_RESET_REQUESTED,
331 STMMAC_RESETING,
332 STMMAC_SERVICE_SCHED,
333 };
334
335 int stmmac_mdio_unregister(struct net_device *ndev);
336 int stmmac_mdio_register(struct net_device *ndev);
337 int stmmac_mdio_reset(struct mii_bus *mii);
338 int stmmac_xpcs_setup(struct mii_bus *mii);
339 void stmmac_set_ethtool_ops(struct net_device *netdev);
340
341 int stmmac_init_tstamp_counter(struct stmmac_priv *priv, u32 systime_flags);
342 void stmmac_ptp_register(struct stmmac_priv *priv);
343 void stmmac_ptp_unregister(struct stmmac_priv *priv);
344 int stmmac_xdp_open(struct net_device *dev);
345 void stmmac_xdp_release(struct net_device *dev);
346 int stmmac_resume(struct device *dev);
347 int stmmac_suspend(struct device *dev);
348 int stmmac_dvr_remove(struct device *dev);
349 int stmmac_dvr_probe(struct device *device,
350 struct plat_stmmacenet_data *plat_dat,
351 struct stmmac_resources *res);
352 void stmmac_disable_eee_mode(struct stmmac_priv *priv);
353 bool stmmac_eee_init(struct stmmac_priv *priv);
354 int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt);
355 int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size);
356 int stmmac_bus_clks_config(struct stmmac_priv *priv, bool enabled);
357 void stmmac_fpe_handshake(struct stmmac_priv *priv, bool enable);
358
stmmac_xdp_is_enabled(struct stmmac_priv * priv)359 static inline bool stmmac_xdp_is_enabled(struct stmmac_priv *priv)
360 {
361 return !!priv->xdp_prog;
362 }
363
stmmac_rx_offset(struct stmmac_priv * priv)364 static inline unsigned int stmmac_rx_offset(struct stmmac_priv *priv)
365 {
366 if (stmmac_xdp_is_enabled(priv))
367 return XDP_PACKET_HEADROOM;
368
369 return 0;
370 }
371
372 void stmmac_disable_rx_queue(struct stmmac_priv *priv, u32 queue);
373 void stmmac_enable_rx_queue(struct stmmac_priv *priv, u32 queue);
374 void stmmac_disable_tx_queue(struct stmmac_priv *priv, u32 queue);
375 void stmmac_enable_tx_queue(struct stmmac_priv *priv, u32 queue);
376 int stmmac_xsk_wakeup(struct net_device *dev, u32 queue, u32 flags);
377 struct timespec64 stmmac_calc_tas_basetime(ktime_t old_base_time,
378 ktime_t current_time,
379 u64 cycle_time);
380
381 #if IS_ENABLED(CONFIG_STMMAC_SELFTESTS)
382 void stmmac_selftest_run(struct net_device *dev,
383 struct ethtool_test *etest, u64 *buf);
384 void stmmac_selftest_get_strings(struct stmmac_priv *priv, u8 *data);
385 int stmmac_selftest_get_count(struct stmmac_priv *priv);
386 #else
stmmac_selftest_run(struct net_device * dev,struct ethtool_test * etest,u64 * buf)387 static inline void stmmac_selftest_run(struct net_device *dev,
388 struct ethtool_test *etest, u64 *buf)
389 {
390 /* Not enabled */
391 }
stmmac_selftest_get_strings(struct stmmac_priv * priv,u8 * data)392 static inline void stmmac_selftest_get_strings(struct stmmac_priv *priv,
393 u8 *data)
394 {
395 /* Not enabled */
396 }
stmmac_selftest_get_count(struct stmmac_priv * priv)397 static inline int stmmac_selftest_get_count(struct stmmac_priv *priv)
398 {
399 return -EOPNOTSUPP;
400 }
401 #endif /* CONFIG_STMMAC_SELFTESTS */
402
403 #endif /* __STMMAC_H__ */
404